WO2020066905A1 - Battery pack, electrical device, and electrical device system - Google Patents

Battery pack, electrical device, and electrical device system Download PDF

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Publication number
WO2020066905A1
WO2020066905A1 PCT/JP2019/037002 JP2019037002W WO2020066905A1 WO 2020066905 A1 WO2020066905 A1 WO 2020066905A1 JP 2019037002 W JP2019037002 W JP 2019037002W WO 2020066905 A1 WO2020066905 A1 WO 2020066905A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
electric device
main body
connection
output
Prior art date
Application number
PCT/JP2019/037002
Other languages
French (fr)
Japanese (ja)
Inventor
西河　智雅
Original Assignee
工機ホールディングス株式会社
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Filing date
Publication date
Application filed by 工機ホールディングス株式会社 filed Critical 工機ホールディングス株式会社
Publication of WO2020066905A1 publication Critical patent/WO2020066905A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to an electric device system that uses a battery pack, an electric device having a load such as a motor or a lighting, and a plurality of battery packs that supply power of different voltages to a plurality of electric devices operated at a plurality of voltages About.
  • Electric devices such as electric tools are driven by battery packs using secondary batteries such as lithium-ion batteries, and cordless electric devices are becoming more cordless.
  • a battery pack containing a plurality of secondary battery cells is used, and the motor is driven by electric energy stored in the battery pack.
  • the battery pack is configured to be detachable from the power tool main body, and when the voltage is reduced by discharging, the battery pack is detached from the power tool main body and charged using an external charging device.
  • Patent Document 2 since it is troublesome to prepare a plurality of battery packs having different voltages, in Patent Document 2, a plurality of battery units are provided in a housing for accommodating batteries, and whether to output them in series or in parallel is determined. By making it selectable by the connection means, it is possible to cope with devices of different voltages.
  • an object of the present invention is to make it possible to mount a battery pack of 14.4 V or less at a design voltage or lower on a power tool main body having a high design voltage such as 18 V.
  • the rail shape of the battery pack is the same so that the battery pack can be mounted on both power tools.
  • a voltage discriminating means is provided so that a battery pack which can be mounted in terms of voltage or a battery pack which should not be mounted can be correctly determined among a plurality of types of battery packs having different voltages.
  • the shape of the rail portion or the terminal slot portion as described in Patent Literature 1 has a problem that it cannot function as an erroneous insertion prevention corresponding to an unexpectedly increased type of battery pack.
  • voltage identification means should be installed at positions other than the rails and terminal slots. There is a problem that must be considered.
  • the present invention has been made in view of the above background, and an object of the present invention is to provide a new battery pack, an electric device, and an electric device system having appropriate compatibility between the battery pack and the electric device body. Is to do. Another object of the present invention is to extend the compatibility by connecting a battery pack having a conventional identification means and a battery pack having a new identification means to a power tool body corresponding to the new identification means. Battery pack, electrical equipment, and electrical equipment system. Further, another object of the present invention is to provide a battery pack, an electric device, and an electric device system in which the shapes of the mounting mechanisms of the battery packs having different rated voltages (rated outputs) are made common to make them compatible. It is in.
  • the battery pack includes a pair of first rails extending in the front-rear direction, a first upper surface formed inside the pair of first rails, and a first upper surface.
  • a first lower surface formed forward and below, a first connection surface connecting the first upper surface and the first lower surface and having a slot into which a terminal of the electric device body is inserted;
  • the one rail portion extends forward from the first connection surface, and a protruding portion that protrudes upward from the first lower step surface or the first upper step surface is provided inside the pair of first rail portions.
  • an electric apparatus including: a low-power battery pack; an electric device main body capable of connecting both a high-power battery pack having a higher output than the low-power battery pack;
  • the high-output battery pack is a device, wherein the pair of first rail portions extending in the front-rear direction, a first upper surface formed inside the pair of first rail portions, and a front of the first upper surface and
  • the high power battery pack includes a first lower surface formed below, a first connection surface connecting the first upper surface and the first lower surface, and having a slot into which a terminal of the electric device body is inserted.
  • a protruding portion that protrudes upward from the first lower step surface or the first upper step surface inside the pair of first rail portions, and a concave portion that allows insertion of the protruding portion is formed in the electric device body.
  • a low-output battery pack a high-output battery pack having a higher output than the low-output battery pack, and an electric device body capable of connecting both the low-output battery pack and the high-output battery pack
  • a high-power battery pack comprising: a pair of first rails extending in the front-rear direction; a first upper surface formed inside the pair of first rails; A first lower surface formed in front of and below the upper surface, and a first connection surface connecting the first upper surface and the first lower surface and having a slot into which a terminal of the electric device body is inserted;
  • the low-power battery pack includes a pair of second rails extending in the front-rear direction, a second upper surface formed inside the pair of second rails, and a lower front and a second upper surface.
  • the second lower step surface to be contacted with the second upper step surface and the second lower step surface.
  • a second connection surface having a slot into which a terminal of the electric device body is inserted, wherein the high-power battery pack is located above the first upper surface or the first lower surface inside the pair of first rail portions.
  • the electric device main body has a concave portion that allows insertion of the protruding portion.
  • the first rail portion includes a first slot provided adjacent to the inside of one of the first rail portions, and the protrusion is located inside the first slot.
  • the first upper step surface is set to be substantially the same as or higher than the upper surface of the first rail portion.
  • the protruding portion is provided on the upper surface of the first lower step surface located inside the pair of first rail portions and behind the front ends of the pair of first rail portions and forward of the first connection surface. Further, the protruding portion may be provided on the upper surface of the first upper step surface located behind the first connection surface inside the pair of first rail portions.
  • the battery pack has a low-output electric device main body to which a low-output battery pack having a lower output than the battery pack or the high-output battery pack can be connected. You may comprise so that connection to an output electric equipment main body may be prohibited.
  • the battery pack or the high output battery pack may have a rated voltage of n (n ⁇ 36) volts, and the low output battery pack may have a rated voltage of n / 2 volts or less.
  • the width and length of the pair of first rails of the battery pack or the high output battery pack and the pair of second rails of the low output battery pack may be the same.
  • a first electrical equipment main body having a rated voltage of n volts
  • a first battery pack having a rated voltage of n volts attachable to the first electrical equipment body
  • a second battery pack having a rated voltage of n / 2 volts or less that can be mounted on the device main body, wherein the first battery pack has a first rail portion and a first latch, and a second battery The pack had a second rail portion and a second latch, the width and length of the first and second rail portions were the same, and the positions of the claws of the first and the second latch were the same.
  • the electric equipment system has a second electric equipment main body having a rated voltage of n / 2 volts or less, and the first battery pack cannot be mounted on the second electric equipment main body. Can be mounted.
  • the first electric device main body has a first erroneous insertion prevention portion
  • the second electric device main body has a second erroneous insertion prevention portion
  • the first erroneous insertion prevention portion has a first erroneous insertion prevention portion.
  • the connection between the battery pack and the second battery pack is allowed, and the second erroneous insertion prevention unit is configured to prohibit the connection of the first battery pack and allow the connection of the second battery pack.
  • the first electric device main body has a first erroneous insertion preventing portion
  • the second electric device main body has a second erroneous insertion preventing portion
  • the erroneous insertion prevention part allows connection of the first battery pack and the second battery pack
  • the second erroneous insertion prevention part prohibits connection of the first battery pack and allows connection of the second battery pack. I do.
  • the first battery pack has a protrusion protruding outside the second battery pack, and the first battery pack is connected to the second electric device body of the first battery pack by the protrusion and the second erroneous insertion prevention portion. The connection is prohibited.
  • the first battery pack has a first terminal portion in a region inside the first rail portion, the first rail portion extends forward from the first terminal portion, and the projecting portion has It is configured such that it is provided inside the first rail portion so as to protrude forward or upward from the first terminal portion.
  • the first battery pack is formed from a lower surface, an upper surface, a connection surface connecting these surfaces, and a connection surface to an upper surface, and is connected to the first terminal portion.
  • the protrusion is formed so as to protrude forward from the open end surface of the slot and forward from the connection surface.
  • the first battery pack has a lower surface and an upper surface, a connection surface connecting these surfaces, and a slot formed from the connection surface to the upper surface and serving as an entrance to the first terminal portion.
  • the second battery pack has a lower surface, an upper surface, a connection surface connecting these surfaces, a slot formed from the connection surface to the upper surface, serving as an entrance to the first terminal portion, and A step-shaped recess formed so as to surround the periphery of the upper outer edge, and the second erroneous insertion preventing portion is formed to be thick so as to hold an upper portion of the terminal of the second electric device main body.
  • the second battery pack is connected to the second electric equipment body by inserting the step into the recess of the second battery pack, and the step is formed by the first battery pack. Prohibits connection between the first battery pack and the first electrical equipment body by contacting the connection surface of It was constructed to so that.
  • the first battery pack is formed from a lower surface, an upper surface, a connection surface connecting these surfaces, and a connection surface to an upper surface, and is connected to the first terminal portion. And a protrusion projecting upward from the upper step surface, and the connection of the first battery pack to the second electric device body is prohibited by the protrusion and the second erroneous insertion preventing portion.
  • Electrical equipment system configured to
  • the new electric equipment system which has suitable compatibility between a battery pack and an electric equipment main body can be provided.
  • new identification means different from the conventional identification means is provided, compatibility can be extended even when the number of battery packs having different rated outputs increases.
  • by providing a new identification means it is possible to prohibit connection to the electric equipment main body corresponding to only the conventional identification means while permitting connection to the electric equipment main body corresponding to the identification means.
  • an electric device that can use a battery pack of a plurality of voltages, even if there are three or more types of a plurality of voltages, it is possible to provide an interference rib for easily setting whether or not the battery can be mounted.
  • Battery packs of various rated voltages can be realized using the rail mechanism.
  • a 36V rated high-voltage battery pack is realized with the same rail mechanism as a conventional 18V battery pack, the conventional 18V battery pack can be mounted on a new 36V electric equipment body. , It is possible to maintain compatibility widely.
  • FIG. 2 is a perspective view of a battery pack 140 according to the first embodiment of the present invention.
  • FIG. 5 is a perspective view of the power tool main body 101 corresponding to the battery pack 140 of FIG. 4 as viewed from below.
  • FIG. 9 is a perspective view of a battery pack 140A according to a second embodiment of the present invention.
  • FIG. 7 is a perspective view of the power tool main body 101A corresponding to the battery pack 140A of FIG. 6 as viewed from below.
  • FIG. 13 is a perspective view of a battery pack 140B according to a third embodiment of the present invention.
  • FIG. 9 is a perspective view of the power tool main body 101B corresponding to the battery pack 140B of FIG. 8 as viewed from below.
  • FIG. 13 is a perspective view of a battery pack 140C according to a fourth embodiment of the present invention. It is the perspective view seen from the lower side of the electric power tool main body 101C corresponding to the battery pack 140C of FIG.
  • a power tool that operates on a battery pack will be described as an example of an electric device.
  • the front, rear, left, and right directions of the power tool body are the directions shown in FIG. It is assumed that the front, rear, left, right, and up and down directions are the directions shown in FIG. 1 based on the mounting direction of the battery pack.
  • the mounting direction of the battery pack is described as a direction based on a situation in which the battery pack is moved without moving the power tool main body for convenience of description.
  • FIG. 1 is a perspective view for explaining a conventional low output power tool main body 1 and a method for mounting a conventional battery pack 40 mounted thereon.
  • the power tool is composed of the power tool body 1 and a battery pack 40 mounted on the power tool main body, and drives a tip tool (not shown) and work equipment (not shown) by using a rotational driving force of a motor.
  • the power tool main body 1 includes a housing 2 that is an outer frame that forms an outer shape.
  • a handle portion 3 is formed in the housing 2, and a trigger switch 4 operated by an operator is provided near an upper end of the handle portion 3.
  • a tip tool mounting portion 7 is provided at the tip of the body portion of the housing 2.
  • a battery pack mounting portion 10 for mounting the battery pack 40 is formed below the handle portion 3.
  • the battery pack 40 can be mounted on the power tool body 1 by moving in the direction of arrow 8. Rail grooves 46, 48 (48 are not visible in FIG. 1) are formed on both left and right sides of the battery pack 40.
  • Rail grooves 46, 48 (48 are not visible in FIG. 1) are formed on both left and right sides of the battery pack 40.
  • the latch mechanism is formed at the rear upper part of the battery pack 40, at the center in the left-right direction, one large latch button 55 is provided at the left and right center, and a latch claw 55a that moves in conjunction with the latch button 55 has an upper side from the front. Protrude into.
  • the battery pack 40 When the battery pack 40 is mounted on the power tool body 1, the battery pack 40 can be removed from the power tool body 1 by pressing the latch button 55 and then relatively moving the battery pack 40 in the direction opposite to the arrow 8. it can.
  • the battery pack 40 accommodates a plurality of cylindrical battery cells (not shown in the drawing) inside a housing 41 made of a synthetic resin, and connects a plurality of battery cells in series to obtain a predetermined rated voltage. Getting the output. For example, an output of 7.2 V, 10.8 V (nominal 12 V), 14.4 V, 18 V, or the like can be obtained by connecting a plurality of lithium ion battery cells having a rating of 3.6 V.
  • FIG. 2 is a diagram for explaining whether or not the low-output battery pack 40 and the high-output battery pack 140 can be attached to the power tool main bodies 1 and 101.
  • a new high-powered power tool main body 101 rated at 36 V and a corresponding high-powered battery pack 140 are realized using the rail mechanism of the 18 V battery pack 40.
  • the power tool main bodies 1 and 101 are provided with housings 2 and 102, handle portions 3 and 103, and trigger switches 4 and 104.
  • a battery pack mounting for mounting the battery packs 40 and 140 below the handle portions 3 and 103 is provided. Parts 10, 110 are formed.
  • FIG. 1 is a diagram for explaining whether or not the low-output battery pack 40 and the high-output battery pack 140 can be attached to the power tool main bodies 1 and 101.
  • the power tool main bodies 1 and 101 are provided with housings 2 and 102, handle portions 3 and 103, and trigger switches 4 and 104.
  • a battery pack mounting for mounting the battery packs 40 and 140 below the handle portions 3 and 103 is
  • the 18V power tool main body 1 and the 36V power tool main body 101 are illustrated as impact tools having the same shape, but the type of the low voltage power tool and the type of the high voltage power tool to be actually applied are arbitrary. It is. Although the housings 2 and 102 are shown as being substantially the same in size in the example of FIG. 2, the 36V power tool main body 101 is often larger in practice.
  • Rails 26 and 28 are formed on the inner wall portions on both left and right sides of the battery pack mounting portion 10 of the power tool main body 1 as rail portions, and extend in the front-rear direction in parallel with each other. 11 are provided.
  • the terminal portion 11 is manufactured by integral molding of a non-conductive material such as a synthetic resin, and has a vertical surface 13 serving as an abutting surface in a mounting direction (front-rear direction) and a horizontal surface 12, and the horizontal surface 12 is used for mounting the battery pack 40. Occasionally, the upper surface 44 is adjacent to and opposed to the upper surface 44.
  • the upper step surface 44 has the same height or the same height as the upper surface of the rail portion with reference to the upper surface of the rail portion forming the rail grooves 46, 48 (the upper end portion of the right side surface 47 and the left side surface 49 of the rail groove 46, 48). It is provided at a position higher than the upper surface.
  • the terminal unit 11 is provided with a plurality of metal terminals, for example, a positive input terminal 31, a negative input terminal 32, and an LD terminal (abnormal signal terminal) 33.
  • the positive input terminal 31 and the negative input terminal 32 are formed of a metal flat plate, and have a sufficient length in the mounting direction that is at least half the length of the rails 26 and 28 in the longitudinal direction.
  • the LD terminal 33 is disposed adjacent to the left side of the positive input terminal 31, and the LD terminal 33 is disposed in parallel with the positive input terminal 31.
  • the power tool main body 101 operates at a rated voltage of 36V.
  • the terminal part 111 of the power tool main body 101 has substantially the same shape as the terminal part 11 of the power tool main body 1.
  • the vertical surface 113 and the horizontal surface 112 constituting the terminal portion 111 have substantially the same shape as the vertical surface 13 and the horizontal surface 12 of the power tool main body 1.
  • the rails 126 and 128, the positive input terminal 131, the negative input terminal 132, and the LD terminal 133 are formed in the same size as the power tool main body 1.
  • a flat lower step surface 42 is formed on the front side, and near the center, an upper step surface 44 formed higher than the lower step surface 42 is formed.
  • the lower step surface 42 is provided at a position lower than the upper surface of the rail portion with reference to the upper surface of the rail portion forming the rail groove 46, 48 and at substantially the same height position as the lower surface of the rail groove 46, 48. I have.
  • the lower step surface 42 is set at a position higher than the lower surfaces of the rail grooves 46 and 48 and lower than the upper surfaces of the rail grooves 46 and 48.
  • a connecting portion between the lower step surface 42 and the upper step surface 44 is formed with a step portion (connection surface, vertical surface) 43 as an extension surface, and a slot group for inserting a device-side terminal is arranged in the step portion 43.
  • a slot group for inserting a device-side terminal is arranged in the step portion 43.
  • large slots 51 and 52 such as notches that are long in the front-rear direction, and a slot 53 having a length of about half of those slots are formed.
  • the slot 51 becomes a first slot for the positive terminal
  • the slot 52 becomes a second slot for the negative terminal
  • the slot 53 becomes a third slot for the LD terminal.
  • Rail grooves 46 and 48 are formed on the right and left side surfaces of the upper step surface 44.
  • the rail grooves 46 and 48 have a shape like a concave portion that is depressed inward from the right side surface 47 and the left side surface 49.
  • a raised portion 45 is provided on the rear side of the upper step surface 44, and a latch button 55 is provided on the rear side.
  • a latch claw 55a is disposed in front of the latch button 55.
  • the battery pack 140 has a mounting mechanism that is formed using a common interface with the 18V battery pack 40, that is, a common rail mechanism.
  • the size of the rail grooves 146 and 148 (front-back length, left-right space, up-down width, etc.) It is common.
  • a lower step surface 142, a step portion 143, and an upper step surface 144 are formed, and a slot group (a first slot 151 for a positive electrode terminal) for inserting a device side terminal from the step portion 143 to the upper step surface 143.
  • a second slot 152 for a negative electrode terminal, and a third slot 153 for an LD terminal are examples of the slot group.
  • the upper surface 144 is defined by the upper surface of the rail portion forming the rail grooves 146 and 148 (the upper end portion of the right side wall 147 and the left side wall 149 of the rail groove 146 and 148). They are provided at the same height or at a position higher than the upper surface thereof.
  • the first slot 151 and the second slot 152 are provided adjacent to the inside of the rail portion.
  • the first slot 151 is provided adjacent to the inside of the rail groove 146 (the right side wall 147), and the second slot 152 is provided adjacent to the inside of the rail groove 148 (the left side wall 149).
  • the lower step surface 142 is provided at a position lower than the upper surface of the rail portion and substantially at the same height position as the lower surface of the rail groove 146, 148 with reference to the upper surface of the rail portion forming the rail groove 146, 148. I have. Note that the lower step surface 142 of this embodiment is set at a position higher than the lower surfaces of the rail grooves 146 and 148 and lower than the upper surfaces of the rail grooves 146 and 148. Above the first slot 151 and the second slot 152 (around the opening), a step-shaped recess 155 into which steps 136 and 137 of the power tool main body 101 (terminal 111) described later are inserted, 156 (see FIG.
  • the interference rib 157 is formed in a portion extending from the lower surface 142 of the battery pack 140 to the step portion 143, and is formed in a substantially rectangular parallelepiped shape projecting upward from the lower surface 142.
  • the rear surface 157b of the substantially rectangular parallelepiped interference rib 157 is connected so as to be in close contact with the step portion 143, and the bottom surface of the interference rib 157 is connected so as to be in close contact with the lower step surface 142.
  • the front side surface of the interference rib 157 is a vertical abutting surface 157a (reference numeral is shown in FIG. 4), and whether the abutting surface 157a interferes with the wall surface of the battery pack mounting portion 10, 110 on the power tool main body 1 or 101 side. It is determined whether or not the battery pack 140 can be mounted on the power tool main body 1 or 101 depending on whether or not there is interference.
  • a new power tool main body 101 that can use the battery pack 140 is realized.
  • a space for accommodating the interference rib 157 when the battery pack 140 is mounted, that is, a concave portion 138 is formed in the battery pack mounting portion 110 of the power tool main body 101.
  • the corresponding portion of the conventional power tool main body 1 does not have a portion corresponding to the concave portion 138 and has a wall surface 38. Therefore, the 36 V battery pack 140 can be mounted on the power tool main body 101, but cannot be mounted on the 18 V power tool main body 1 because the interference rib 157 interferes with the wall surface 38.
  • the interference rib 157 is disposed on the front side of the entrance of the slot 151 of the positive electrode side connection terminal, an attempt is made to mount the battery pack 140 on the power tool main body 1, and the interference rib 157 contacts the wall surface 38. This is before the positive electrode input terminal 31 on the power tool body 1 side is inserted into the first slot 151 of the battery pack 140. Similarly, before the negative input terminal 32 and the LD terminal 33 on the power tool main body 1 side are inserted into the second slot 152 and the third slot 153 of the battery pack 140, the interference rib 157 contacts the wall surface 38.
  • the recess 138 corresponds to a first erroneous insertion prevention unit
  • the wall surface 38 corresponds to a second erroneous insertion prevention unit.
  • the mounting relationship between the conventional 18V battery pack 40 and the new 36V battery pack 140 is indicated by the solid or dotted arrow in the center of FIG.
  • the 36V battery pack 140 can be mounted on the 36V power tool main body 101 as indicated by the solid arrow C, but cannot be mounted on the 18V power tool main body 1 as indicated by the dotted arrow D.
  • two methods are conceivable for making the 36 V battery pack 140 inoperable with the 18 V electric tool body 1.
  • One is a method in which the battery pack 140 can be mounted on the power tool main body 1, but the electric connection is blocked and the battery pack 140 is not substantially operated (electric blocking method).
  • the other is a method in which the battery pack 140 cannot be physically attached to the power tool main body 1 (mechanical blocking method).
  • the latter is adopted so that the battery pack 140 cannot be mounted on the power tool body 1.
  • the battery pack 40 can be mounted on the power tool main body 1 as shown by a solid arrow A.
  • the power tool main body 101 can also be mounted. This is a natural consequence of sharing the rail mechanism.
  • the low-voltage battery pack 40 is mounted on the electric device of the high-voltage power tool main body 101, depending on the type of the electric device, the device operates almost normally, does not operate, or has insufficient output even if it operates. The following three cases are assumed.
  • the power tool main body 101 is an impact driver, a low-voltage battery pack 40 does not have sufficient motor driving force, but can be operated in a short time. Even when such a limited use is possible, if the 36 V battery pack 140 is not at hand, or if there is any discharge, the limited use by the battery pack 40 is possible. Then there are situations that are convenient for the user.
  • FIG. 3 is a perspective view showing a connection state between a connection terminal of power tool main body 101 and a connection terminal of battery pack 140.
  • two positive output terminals 161 and 171 are arranged side by side in the mounting direction (front-back direction).
  • two negative electrode terminals 162 and 172 are arranged side by side in the mounting direction.
  • the positive output terminals 161 and 171 are arranged in the slot 151 in a non-contact state at a predetermined distance
  • the negative output terminals 162 and 172 are arranged in the slot 152 in a non-contact state at a predetermined distance. Is done.
  • the positive output terminals 161 and 171 are electrically connected by wiring
  • the negative output terminals 162 and 172 are electrically connected by wiring.
  • Each of the battery cell sets 180 and 190 accommodated in the battery pack 140 is connected in series, and here, two battery cell sets 180 and 190 are further connected in series.
  • chargeable / dischargeable secondary batteries are used, for example, lithium ion batteries having a rated voltage of 3.6V. Therefore, a DC power of a rated voltage of 36 V is supplied between the positive terminal (161, 171) and the negative terminal (162, 172).
  • connection terminals of the power tool main body 101 include a positive input terminal 131 and a negative input terminal 132. DC power input from the positive input terminal 131 and the negative input terminal 132 on the power tool main body 101 side is supplied to the motor 105 via the trigger switch 104.
  • FIG. 3 shows a circuit in which the main body side connection terminals (131, 132) and the motor 105 are directly connected to facilitate the description, the motor 105 is driven via an inverter circuit (not shown). You may.
  • the configuration is such that the connection terminals (131, 132) of the power tool main body 101 are relatively moved as indicated by dotted arrows and inserted between the connection terminal groups (161 and 171, 162 and 172) of the battery pack 140. Is done.
  • the positive input terminal 131 is a metal plate material bent in a crank shape, and is formed with a sufficient length so as to be fitted simultaneously with the front positive output terminal 161 and the rear positive output terminal 171.
  • the negative input terminal 132 is a metal plate bent in a crank shape, and is formed with a sufficient length so as to be fitted simultaneously with the front negative output terminal 162 and the rear negative output terminal 172. .
  • the positive input terminal 131 and the negative input terminal 132 are arranged so as to be plane-symmetric, and the portion bent in a crank shape is stabilized by being cast into the terminal portion 111 (see FIG. 2) made of synthetic resin. Is held.
  • the rear ends of the positive input terminal 131 and the negative input terminal 132 are soldered to wiring to the motor 105 side.
  • the positive output terminals 161 and 171 and the negative output terminals 162 and 172 have an inverted ⁇ shape as viewed from the main body side connection terminal insertion direction (the direction indicated by the dotted arrow), and common components are used.
  • a rectangular flat plate portion 172a for fixing to a circuit board (not shown) in the battery pack 140 is formed, and the flat plate portion 172a is attached to the circuit board by soldering or screwing (not shown).
  • Two arm portions 172b bent from both left and right ends of the flat plate portion 172a are formed upward from both left and right side portions of the flat plate portion 172a.
  • the two arms 172b and 172c are bent so as to approach each other as going upward, and terminal portions 172c are arranged at predetermined intervals so that the upper ends of the arms 172b are parallel.
  • the terminal portion 172c is a substantially rectangular electrode that is held in a non-contact state, and is bent so that the front side and the rear side are separated from the contact terminal portion facing each other, and the main body side connection terminal is positioned from the front to the rear.
  • the shape is such that it is easily fitted in the direction.
  • FIG. 4 is a perspective view of the battery pack 140 according to the first embodiment of the present invention. This figure is the same as the figure shown in FIG.
  • the battery pack 140 with a rated output of 36 V has only one difference in appearance compared to the battery pack 40 with a rated output of 18 V, that is, an interference rib 157 is provided.
  • the interference rib 157 is located between the positive electrode side slot 151 and the LD terminal slot 153 (connection surface) as viewed in the left-right direction, and is disposed in front of the step portion 143.
  • the interference rib 157 is formed on the front side of the vertical surface of the stepped portion 143 and slightly from the front end position (front wall 157a) of the rail grooves 146 and 148 to the stepped portion 143, and is formed of a synthetic resin. It is a rectangular parallelepiped made of.
  • the interference rib 157 extends from the step 143 to the front end positions of the rail grooves 146 and 148 when viewed in the front-rear direction, and the distance is L1.
  • the interference rib 157 is formed so as to extend to the front side from the front end positions of the rail grooves 146 and 148 indicated by the dashed line, but the front wall 157a is located at the same position as the front end positions of the rail grooves 146 and 148. May be located, or the front wall 157a may be located slightly behind the front end positions of the rail grooves 146 and 148.
  • the rail grooves 146 and 148 have a length L in the front-rear direction, and most of them have side walls 147 and 149 formed on the upper side.
  • the side walls 147 and 149 extend to the rear side from the rear ends of the rail grooves 146 and 148, and are connected to the raised portions 145.
  • the right rail 146 is provided with a cutout portion 146b that is cutout downward from the upper surface.
  • the cutout portion 146b is an identification slit formed to prevent or hinder attachment to another power tool main body having a different rated voltage (for example, a power tool main body rated at 14.4 V).
  • the notch is also formed on the 18V battery pack 40 (notch 46b).
  • FIG. 5 is a perspective view of the power tool main body 101 corresponding to the battery pack 140 as viewed from below.
  • the terminal portion 111 is made of synthetic resin, and has a positive input terminal 131 and a negative input terminal 132 cast therein. Also, a metal terminal component to be the LD terminal 133 is cast.
  • a metal terminal component to be the LD terminal 133 is cast in the positive electrode input terminal 131 and the negative electrode input terminal 132.
  • not only a part bent in a crank shape on the rear side (see FIG. 3) but also an upper side part is cast.
  • step portions 136 and 137 which are thickened in steps for reinforcement are formed, and the positive input terminal 131 and the negative input terminal 132 are firmly connected. To keep it.
  • a recess 138 is formed in a part of the rear side of the terminal portion 111.
  • the concave portion 138 has a shape in which a part of a synthetic resin molded product is cut off, and serves as a space where the interference rib 157 (see FIG. 4) is located when the battery pack 140 is mounted on the power tool main body 101. .
  • the concave portion 138 By providing the concave portion 138, the 36V battery pack 140 can be mounted.
  • the power tool main body 1 for 18V does not have a space for accommodating the interference rib 157 such as the concave portion 138 (see FIG. 2). Instead, a wall surface 38 is formed.
  • the protrusion such as the interference rib 157 does not exist on the battery pack 40 side, the presence of the recess 138 does not affect the mounting of the battery pack 40.
  • Other shapes, especially the dimensions of the rails 126 and 128, particularly the length in the front-rear direction, the width in the left-right direction, and the height in the vertical direction are the same, and the distance between the rails 126 and the rails 128 is also low.
  • 40 is the same as the distance between the rail 26 and the rail 28 of the power tool body 1 to which the power tool main body 1 can be mounted.
  • an LD terminal 133 for transmitting an abnormal signal is provided according to the same standard as the power tool main body 1, and a signal indicating occurrence of an abnormality such as over-discharge or over-temperature is transmitted from the battery pack 40 or the battery pack 140 to the power tool main body 101. Can be transmitted to The microcomputer of the arithmetic unit (not shown) included in the power tool main body 101 stops operation when receiving the abnormality occurrence signal via the LD terminal 133.
  • the 36V battery pack 140 is realized by using the conventional rail mechanism for the rated voltage of 18V, and the main body of the electrical equipment for the rated voltage of 36V is realized. Compatibility that an 18 V battery pack 40 can be mounted on the device body was realized.
  • the identification means is provided at a position different from the rail and the terminal slot so as to be able to cope with many types that cannot be handled by the identification means configured in the shape of the rail and the terminal slot as in the related art. As a result, a new electrical equipment system having appropriate compatibility between the battery pack and the electrical equipment body can be provided.
  • the interference rib 157 is provided in front of the terminal portion (the portion where the slot 151 and the like are arranged), it is possible to secure an area where the terminal is arranged. Further, since the interference rib 157 is provided between the rail grooves 146 and 148 (between the rail portions) in the left-right direction, the interference rib 157 can be protected by the rail portion. Further, since no groove is provided in the rail portion, the strength of the rail portion does not decrease.
  • the conventional 18 V external charger is the same battery pack mounting portion 10 as the 18 V electric tool main body 1, and is configured not to receive the interference rib 157 (see FIG. 4) of the battery pack 140.
  • the attachment of the battery pack 140 is prevented. Therefore, it is possible to avoid trouble caused by inserting the 36V battery pack 140 into the conventional 18V external charger.
  • the external charger for 36 V can be designed so that it can charge an 18 V battery pack 40 and a 14.4 V battery pack (not shown).
  • the battery packs of 14.4 V, 18 V, and 36 V can be mechanically connected.
  • a general-purpose charger capable of charging a plurality of battery packs having different rated voltages can be provided.
  • FIG. 6 is a perspective view of a battery pack 140A according to the second embodiment of the present invention.
  • the difference from the battery pack 140 according to the first embodiment is that an interference rib 158 is provided instead of the interference rib 157 in the battery pack 140A.
  • the left-right direction position where the interference rib 158 is provided is between the LD terminal slot 153 and the negative electrode side slot 152, and is a flat plate-like projection extending rearward from the front end position of the rail groove 146, 148 when viewed in the front-rear direction.
  • the interference rib 158 be manufactured integrally with the case 141A of the battery pack 140A because the interference rib 158 has sufficiently high strength.
  • the 36V battery pack 140A cannot be mounted on the conventional 18V electric power tool main body 1.
  • the battery pack 140A can be mounted.
  • FIG. 7 is a perspective view of the power tool main body 101A corresponding to the battery pack 140A of FIG. 6 as viewed from below.
  • the shape of the terminal portion 111A of the power tool main body 101A is basically substantially the same as the terminal portion 111 of the first embodiment, but instead of the concave portion 138 formed in the terminal portion 111, the terminal portion 111A has a vertical surface.
  • 113A is formed to be small in the vertical direction, and has a shape in which a lower end portion is cut. For this reason, the portion extending from the arrows 114a to 114b is a space that avoids contact with the interference rib 158, so that the 36V-rated battery pack 140A can be mounted on the 36V-rated power tool main body 101A.
  • the interference rib 158 is located in the housing space (cut space) below the vertical surface 113A.
  • the cut space corresponds to a first erroneous insertion prevention part.
  • the front wall 158a (see FIG. 6) of the interference rib 158 contacts the vertical wall 113, the battery pack 140 cannot be mounted on the conventional power tool main body 1 rated at 18V.
  • the interference rib 157 of FIG. 4 and the interference rib 158 of FIG. 6 can be formed at the same time. In this case, a recess similar to the recess 138 in FIG. 5 may be formed in the terminal portion 111A shown in FIG. With this configuration, the same effect as in the first embodiment can be obtained.
  • FIG. 8 is a perspective view of a battery pack 140B according to the third embodiment of the present invention.
  • a step-shaped depression (corresponding to the depression 155 in FIG. 4) is not formed around the opening of the slot 151B indicated by the arrow 155B.
  • no step-shaped depression (corresponding to the depression 156 in FIG. 4) is formed around the opening of the slot 152B indicated by the arrow 156B.
  • the steps 36 and 37 correspond to a second erroneous insertion prevention unit.
  • FIG. 9 is a perspective view of the power tool main body 101B corresponding to the battery pack 140B as viewed from below.
  • the steps 136 and 137 formed on the power tool main bodies 101A and 101B of FIGS. 5 and 7 are not formed near the upper side of the positive electrode input terminal 131 and the negative electrode input terminal 132.
  • the battery pack 140B can be mounted on the power tool main body 101B.
  • no step is provided near the LD terminal 133, but this configuration is the same as the shape of the LD terminal 33 of the conventional power tool body 1. According to this configuration, with a simple configuration in which the depressions 155 and 156 are not formed in the battery pack, it is possible to prohibit connection to the power tool main body having the upper step portion of the terminal and having a low rated voltage.
  • FIG. 10 is a perspective view of a battery pack 140C according to the fourth embodiment of the present invention.
  • the basic principle of the fourth embodiment is the same as that of the first to third embodiments.
  • a protrusion (interference rib) 159 is provided on the battery pack 140C side, and the protrusion 159 is inserted on the power tool main body 101C side.
  • a groove 116 (to be described later with reference to FIG. 11) is provided to allow the above.
  • the protrusion 159 is provided at any position of the upper step surface 144C.
  • the upper surface 144C is formed with respect to the upper surface of the rail portion forming the rail grooves 146 and 148 (the upper end portion of the right side wall 147 and the left side wall 149 of the rail groove 146 and 148). It is provided at the same height as the upper surface or at a position higher than the upper surface. That is, the projection 159 projects upward from the upper step surface 144C with reference to the rail. Further, the lower step surface 142C is provided at a position lower than the upper surface of the rail portion and substantially the same height as the lower surface of the rail groove 146, 148, with reference to the upper surface of the rail portion forming the rail groove 146, 148. Have been.
  • the position of the protrusion 159 as viewed in the front-rear direction may be provided within the range of the front-rear length occupied by the rail grooves 146, 148. Further, when viewed in the left-right direction, it is provided in a range sandwiched by the left and right rail grooves 146 and 148, particularly preferably between the slot 151 of the positive connection terminal and the slot 153 of the negative connection terminal, and more preferably. Is provided at the center of the battery pack 140C in the left-right direction. The interference of the protrusion 159 prevents the battery pack 140C from being mounted on the electric device body 1. In addition, since the projection 159 needs sufficient strength, it is preferable to manufacture the projection 159 integrally with the upper step surface 144C.
  • the length in the front-rear direction and the width in the left-right direction of the protrusion 159 may be set arbitrarily.
  • FIG. 11 is a perspective view of the power tool main body 101C corresponding to the battery pack 140C as viewed from below.
  • the shape of the power tool main body 101C is the same as that of the power tool main body 101B of the third embodiment except that a groove 116 is formed.
  • the groove 116 is formed linearly from the front end 116a on the lower surface of the battery pack mounting portion 110C to the rear end 116b near the center.
  • the longitudinal direction of the groove 116 is parallel to the direction in which the rails 126 and 128 extend.
  • the battery pack 140C has stepped depressions 155 and 156 in the upper portions of the slots 151 and 153. Parts 136 and 137 may be provided. With this configuration, the same effect as in the first embodiment can be obtained.
  • the present invention has been described based on the embodiments.
  • the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.
  • the example in which the power tool is used as the device to which the battery pack is attached has been described.
  • the type of the electric device is not limited to the power tool. Electrical equipment may be used.
  • the erroneous mounting prevention means of the first to fourth embodiments described above can be applied to a high-voltage battery pack by combining a plurality of them at the same time.
  • a high-voltage battery pack having a further different rating for example, a high-voltage battery pack having a rated output of 48 V or 72 V may be realized.
  • a low-voltage or high-voltage battery pack is described as a low output or a high output, but a battery pack having a different capacity as an output may be used.
  • SYMBOLS 1 Power tool main body, 2 ... Housing, 3 ... Handle part, 4 ... Trigger switch, 7 ... Tip tool mounting part, 8 ... Mounting direction, 10 ... Battery pack mounting part, 11 ... Terminal part, 12 ... Horizontal plane, 13 ... Vertical surface, 26, 28 rail groove, 31 positive input terminal, 32 negative input terminal, 33 LD terminal, 38 wall surface, 40 (low output) battery pack, 41 housing, 42 (second) Lower step surface, 43: stepped portion (second connection surface), 44: (second) upper step surface, 45: raised portion 46, 48 ...
  • rail (second rail portion), 51: positive electrode side slot, 52: negative electrode side slot 53, LD terminal slot, 55, latch button, 55a, latch claw, 101, 101A to 101C, power tool main body, 104, trigger switch, 105, motor, 110, battery pack mounting section, 111, 111A, 11B, 111C: terminal portion, 112, 112A, 112B, 112C: horizontal surface, 113, 113A: vertical wall, 116: groove portion, 125: latch button, 125a: latch claw, 126, 128: rail, 131: positive electrode input terminal 132 negative input terminal, 133 LD terminal, 136, 137 step portion, 138 concave portion, 140 (high output) battery pack, 140A to 140C battery pack, 141A case, 142 ...

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Abstract

A battery pack 140 comprises: a pair of first rail sections 146, 148 extending in the front-rear direction; a first upper surface 144 formed inward of the pair of first rail sections; a first lower surface 142 formed farther forward and downward than the first upper surface; and a first connection surface 143 that connects the first upper surface and the first lower surface and has slots 151, 152, 153 into which terminals of an electrical device body are inserted. The pair of first rail sections extend farther forward than the first connection surface, and protrusions 157, 158, 159 that protrude upward from the first lower surface or the first upper surface are provided inward of the pair of first rail sections.

Description

電池パック、電気機器及び電気機器システムBattery pack, electrical equipment and electrical equipment system
本発明は電池パックと、モータや照明等の負荷を有する電気機器と、複数電圧で操作する複数の電気機器に対して異なる電圧の電源を供給する複数の電池パックを組み合わせて使用する電気機器システムに関する。 The present invention relates to an electric device system that uses a battery pack, an electric device having a load such as a motor or a lighting, and a plurality of battery packs that supply power of different voltages to a plurality of electric devices operated at a plurality of voltages About.
電動工具等の電気機器が、リチウムイオン電池等の二次電池を用いた電池パックにて駆動されるようになり、電気機器のコードレス化が進んでいる。例えば、モータにより先端工具を駆動する手持ち式の電動工具においては、複数の二次電池セルを収容した電池パックが用いられ、電池パックに蓄電された電気エネルギーにてモータを駆動する。電池パックは電動工具本体に着脱可能に構成され、放電によって電圧が低下したら電池パックを電動工具本体から取り外して、外部充電装置を用いて充電される。 Electric devices such as electric tools are driven by battery packs using secondary batteries such as lithium-ion batteries, and cordless electric devices are becoming more cordless. For example, in a hand-held power tool that drives a tool bit by a motor, a battery pack containing a plurality of secondary battery cells is used, and the motor is driven by electric energy stored in the battery pack. The battery pack is configured to be detachable from the power tool main body, and when the voltage is reduced by discharging, the battery pack is detached from the power tool main body and charged using an external charging device.
コードレス型の電動工具等の電気機器においては所定の稼働時間の確保や、所定の出力の確保が要求され、二次電池の性能向上に伴い高出力化（高容量化や高電圧化）が図られてきた。また、電池パックを電源とする電気機器が開発されるにつれ、様々な電圧の電池パックが商品化されるようになった。通常、電池パックの形状、特に装着機構のサイズや形状は、特許文献１に記載されるように、電池パックの出力電圧に対応させて別々の装着機構として形成することによって、作業者が異なる定格電圧の電池パックを対応しない電気機器に誤装着できないように構成する。また、異なる電圧の電池パックを複数準備することが煩わしいので、特許文献２では電池を収容するハウジング内に複数のバッテリユニットを設け、それらを直列接続として出力するか、並列接続として出力するかを接続手段により選択可能とすることにより、異なる電圧の機器に対応可能としている。 It is required to secure a predetermined operation time and a predetermined output for electric equipment such as a cordless power tool, and higher output (higher capacity and higher voltage) is required as the performance of secondary batteries is improved. I have been. Also, with the development of electric equipment using a battery pack as a power source, battery packs of various voltages have been commercialized. Generally, as described in Patent Document 1, the shape of the battery pack, particularly the size and shape of the mounting mechanism, are formed as separate mounting mechanisms corresponding to the output voltage of the battery pack, so that the operator can obtain different rated values. The battery pack of the voltage is configured so as not to be erroneously attached to an incompatible electric device. In addition, since it is troublesome to prepare a plurality of battery packs having different voltages, in Patent Document 2, a plurality of battery units are provided in a housing for accommodating batteries, and whether to output them in series or in parallel is determined. By making it selectable by the connection means, it is possible to cope with devices of different voltages.
国際公開ＷＯ２０１４／１４８４５２号公報International Publication WO2014 / 148452 特開２０１４－０１７９５４号公報JP-A-2014-017954
コードレス電動工具において、複数種の電圧違いの電池パックを装着させることが行われている。例えば、１８Ｖ等の設計電圧の高い電動工具本体に、設計電圧以下の１４．４Ｖの電池パックを装着可能とすることである。この場合は、電池パックのレール形状を同じにして電池パックを双方の電動工具に装着可能に構成する。また、複数種の電圧違いの電池パックのうち、電圧的に装着して良い電池パックか、装着してはいけない電池パックかを正しく判別できるよう、電圧識別手段を設けている。特許文献１に記載されるように、従来の電池パックでは、定格電圧違いの電池パックが装着できるとしても電圧の違いはせいぜい３～４割程度（例えば定格電圧１８Ｖの電動工具本体に対して定格電圧１４．４Ｖの電池パック）までであり、レール部又は端子のスロット部の形状を変更することで、定格電圧が異なる２種類の電池パックと電気機器本体との誤挿入を防止していた。しかしながら、定格電圧差が大きい電池パックの装着や、定格電圧や容量が異なる３種類以上の誤挿入防止までは想定されていなかった。すなわち、特許文献１に記載のようなレール部や端子スロット部の形状では、想定されずに増加した種類の電池パックに対応する誤挿入防止として機能することができないという問題が出てきた。言い換えると、装着機構を含めたインターフェースの共用化を図る場合、電圧や容量違いの電池パックの種類が３種類以上に増えるにつれて、レール部や端子スロット部以外の位置に電圧識別手段を設置することを考慮しなければならないという問題が出てきた。また、互換性の観点から、新たな識別手段を有する電池パックに接続可能な新型の電気機器本体に、従来のレール部又はスロット部に識別手段を設けた電池パックも接続できるようにすることが求められている。 2. Description of the Related Art In a cordless power tool, a plurality of types of battery packs having different voltages are mounted. For example, an object of the present invention is to make it possible to mount a battery pack of 14.4 V or less at a design voltage or lower on a power tool main body having a high design voltage such as 18 V. In this case, the rail shape of the battery pack is the same so that the battery pack can be mounted on both power tools. Further, a voltage discriminating means is provided so that a battery pack which can be mounted in terms of voltage or a battery pack which should not be mounted can be correctly determined among a plurality of types of battery packs having different voltages. As described in Patent Document 1, in a conventional battery pack, even if a battery pack having a different rated voltage can be mounted, the difference in voltage is at most about 30 to 40% (for example, the rated voltage is 18 V for a power tool body). By changing the shape of the rail portion or the slot portion of the terminal, erroneous insertion between the two types of battery packs having different rated voltages and the main body of the electric device was prevented. However, mounting of a battery pack having a large rated voltage difference and prevention of incorrect insertion of three or more types having different rated voltages and capacities were not assumed. That is, the shape of the rail portion or the terminal slot portion as described in Patent Literature 1 has a problem that it cannot function as an erroneous insertion prevention corresponding to an unexpectedly increased type of battery pack. In other words, when sharing the interface including the mounting mechanism, as the number of types of battery packs having different voltages and capacities increases to three or more, voltage identification means should be installed at positions other than the rails and terminal slots. There is a problem that must be considered. Further, from the viewpoint of compatibility, it is possible to connect a conventional battery pack provided with an identification means on a rail or a slot to a new-type electric device body connectable to a battery pack having a new identification means. It has been demanded.
本発明は上記背景に鑑みてなされたものであって、本発明の目的は、電池パックと電気機器本体との間に適切な互換性を有する新たな電池パック、電気機器、電気機器システムを提供することにある。本発明の他の目的は、従来の識別手段を有する電池パックと、新型の識別手段を有する電池パックとを、新型の識別手段に対応した電動工具本体に接続可能として互換性を拡張できるようにした電池パック、電気機器、電気機器システムを提供することにある。また、本発明の他の目的は、定格電圧（定格出力）が異なる範囲の電池パックの装着機構の形状を共通化して、互換性を持たせた電池パック、電気機器、電気機器システムを提供することにある。本発明の他の目的は、高出力の電池パックの低出力電気機器本体への装着を確実に阻止できるようにして、電気機器本体への誤装着の防止できるようにした電池パック、電気機器、電気機器システムを提供することにある。本発明のさらに他の目的は、高電圧電気機器の定格電圧の半分以下の低い電圧の電池パックをも使用可能とした高電圧の電気機器を提供することにある。 The present invention has been made in view of the above background, and an object of the present invention is to provide a new battery pack, an electric device, and an electric device system having appropriate compatibility between the battery pack and the electric device body. Is to do. Another object of the present invention is to extend the compatibility by connecting a battery pack having a conventional identification means and a battery pack having a new identification means to a power tool body corresponding to the new identification means. Battery pack, electrical equipment, and electrical equipment system. Further, another object of the present invention is to provide a battery pack, an electric device, and an electric device system in which the shapes of the mounting mechanisms of the battery packs having different rated voltages (rated outputs) are made common to make them compatible. It is in. Another object of the present invention is to provide a battery pack, an electric device, and a battery pack capable of reliably preventing a high-output battery pack from being mounted on a low-output electric device main body and preventing erroneous mounting on the electric device main body. It is to provide an electric equipment system. Still another object of the present invention is to provide a high-voltage electric device that can use a battery pack having a low voltage of half or less of the rated voltage of the high-voltage electric device.
本願において開示される発明のうち代表的な特徴を説明すれば次のとおりである。本発明の一つの特徴によれば、電池パックは、前後方向に延びる一対の第１レール部と、一対の第１レール部の内側に形成される第１上段面と、第１上段面よりも前方で且つ下方に形成される第１下段面と、第１上段面及び第１下段面を接続し電気機器本体の端子が挿入されるスロットを有する第１接続面と、を備え、一対の第１レール部は第１接続面よりも前方に延びており、一対の第１レール部の内側において、第１下段面又は第１上段面から上方に突出する突出部を設けた。 The typical features of the invention disclosed in the present application will be described as follows. According to one feature of the present invention, the battery pack includes a pair of first rails extending in the front-rear direction, a first upper surface formed inside the pair of first rails, and a first upper surface. A first lower surface formed forward and below, a first connection surface connecting the first upper surface and the first lower surface and having a slot into which a terminal of the electric device body is inserted; The one rail portion extends forward from the first connection surface, and a protruding portion that protrudes upward from the first lower step surface or the first upper step surface is provided inside the pair of first rail portions.
本発明の他の特徴によれば、低出力電池パックと低出力電池パックより高い出力を有する高出力電池パックの双方を接続可能とした電気機器本体と、高出力電池パックと、を備えた電気機器であって、高出力電池パックは、前後方向に延びる一対の第１レール部と、一対の第１レール部の内側に形成される第１上段面と、第１上段面よりも前方で且つ下方に形成される第１下段面と、第１上段面及び第１下段面を接続し電気機器本体の端子が挿入されるスロットを有する第１接続面と、を有し、高出力電池パックは、一対の第１レール部の内側において第１下段面又は第１上段面から上方に突出する突出部を有し、電気機器本体には、突出部の挿入を許容する窪み部が形成される。 According to another aspect of the present invention, there is provided an electric apparatus including: a low-power battery pack; an electric device main body capable of connecting both a high-power battery pack having a higher output than the low-power battery pack; The high-output battery pack is a device, wherein the pair of first rail portions extending in the front-rear direction, a first upper surface formed inside the pair of first rail portions, and a front of the first upper surface and The high power battery pack includes a first lower surface formed below, a first connection surface connecting the first upper surface and the first lower surface, and having a slot into which a terminal of the electric device body is inserted. A protruding portion that protrudes upward from the first lower step surface or the first upper step surface inside the pair of first rail portions, and a concave portion that allows insertion of the protruding portion is formed in the electric device body.
本発明のさらに他の特徴によれば、低出力電池パックと、低出力電池パックより高い出力を有する高出力電池パックと、低出力電池パックと高出力電池パックの双方を接続可能な電気機器本体と、を備えた電気機器システムであって、高出力電池パックは、前後方向に延びる一対の第１レール部と、一対の第１レール部の内側に形成される第１上段面と、第１上段面よりも前方で且つ下方に形成される第１下段面と、第１上段面及び第１下段面を接続し電気機器本体の端子が挿入されるスロットを有する第１接続面と、を有し、低出力電池パックは、前後方向に延びる一対の第２レール部と、一対の第２レール部の内側に形成される第２上段面と、第２上段面よりも前方で且つ下方に形成される第２下段面と、第２上段面及び第２下段面を接続し電気機器本体の端子が挿入されるスロットを有する第２接続面と、を有し、高出力電池パックは、一対の第１レール部の内側において、第１上段面又は第１下段面から上方に突出する突出部を有し、電気機器本体は、突出部の挿入を許容する窪み部を有する。 According to still another aspect of the present invention, a low-output battery pack, a high-output battery pack having a higher output than the low-output battery pack, and an electric device body capable of connecting both the low-output battery pack and the high-output battery pack A high-power battery pack comprising: a pair of first rails extending in the front-rear direction; a first upper surface formed inside the pair of first rails; A first lower surface formed in front of and below the upper surface, and a first connection surface connecting the first upper surface and the first lower surface and having a slot into which a terminal of the electric device body is inserted; The low-power battery pack includes a pair of second rails extending in the front-rear direction, a second upper surface formed inside the pair of second rails, and a lower front and a second upper surface. The second lower step surface to be contacted with the second upper step surface and the second lower step surface. And a second connection surface having a slot into which a terminal of the electric device body is inserted, wherein the high-power battery pack is located above the first upper surface or the first lower surface inside the pair of first rail portions. The electric device main body has a concave portion that allows insertion of the protruding portion.
本発明のさらに他の特徴によれば、一対の第１レール部の一方のレールの内側に隣接して設けられた第１のスロットを有し、突出部は第１のスロットより内側の位置に設けられる。第１上段面は、第１レール部の上面と略同一又は上面よりも高い位置に設定されている。突出部は、一対の第１レール部の内側において、一対の第１レール部の前端よりも後方で第１接続面よりも前側に位置する第１下段面の上面に設けられる。また、突出部は、一対の第１レール部の内側において、第１接続面よりも後側に位置する第１上段面の上面に設けられても良い。さらに、電池パック又は高出力電池パックより低出力の低出力電池パックを接続可能な低出力電気機器本体を有し、突出部が低出力電気機器本体に当接することによって、高出力電池パックの低出力電気機器本体への接続を禁止するように構成しても良い。また、電池パック又は高出力電池パックは定格電圧ｎ（ｎ≧３６）ボルトであり、低出力電池パックは定格電圧ｎ／２ボルト以下であっても良い。また、電池パック又は高出力電池パックの一対の第１レール部と低出力電池パックの一対の第２レール部の幅及び長さを同じとしても良い。 According to still another feature of the present invention, the first rail portion includes a first slot provided adjacent to the inside of one of the first rail portions, and the protrusion is located inside the first slot. Provided. The first upper step surface is set to be substantially the same as or higher than the upper surface of the first rail portion. The protruding portion is provided on the upper surface of the first lower step surface located inside the pair of first rail portions and behind the front ends of the pair of first rail portions and forward of the first connection surface. Further, the protruding portion may be provided on the upper surface of the first upper step surface located behind the first connection surface inside the pair of first rail portions. Furthermore, the battery pack has a low-output electric device main body to which a low-output battery pack having a lower output than the battery pack or the high-output battery pack can be connected. You may comprise so that connection to an output electric equipment main body may be prohibited. The battery pack or the high output battery pack may have a rated voltage of n (n ≧ 36) volts, and the low output battery pack may have a rated voltage of n / 2 volts or less. Further, the width and length of the pair of first rails of the battery pack or the high output battery pack and the pair of second rails of the low output battery pack may be the same.
本発明のさらに他の特徴によれば、定格電圧ｎボルトの第１の電気機器本体と、第１の電気機器本体に装着可能な定格電圧ｎボルトの第１の電池パックと、第１の電気機器本体に装着可能な定格電圧ｎ／２ボルト以下の第２の電池パックと、を有し、第１の電池パックは、第１のレール部と第１のラッチを有し、第２の電池パックは、第２のレール部と第２のラッチを有し、第１及び第２のレール部の幅及び長さを同じとし、第１及び第２のラッチの爪の位置を同じとした。また、電気機器システムは、定格電圧ｎ／２ボルト以下の第２の電気機器本体を有し、第２の電気機器本体には、第１の電池パックが装着不可であり、第２の電池パックは装着可能である。第１の電気機器本体は、第１の誤挿入防止部を有し、第２の電気機器本体は、第２の誤挿入防止部を有し、第１の誤挿入防止部は、第１の電池パック及び第２の電池パックの接続を許容し、第２の誤挿入防止部は、第１の電池パックの接続を禁止し、第２の電池パックの接続を許容するように構成される。 According to still another aspect of the present invention, a first electrical equipment main body having a rated voltage of n volts, a first battery pack having a rated voltage of n volts attachable to the first electrical equipment body, A second battery pack having a rated voltage of n / 2 volts or less that can be mounted on the device main body, wherein the first battery pack has a first rail portion and a first latch, and a second battery The pack had a second rail portion and a second latch, the width and length of the first and second rail portions were the same, and the positions of the claws of the first and the second latch were the same. Further, the electric equipment system has a second electric equipment main body having a rated voltage of n / 2 volts or less, and the first battery pack cannot be mounted on the second electric equipment main body. Can be mounted. The first electric device main body has a first erroneous insertion prevention portion, the second electric device main body has a second erroneous insertion prevention portion, and the first erroneous insertion prevention portion has a first erroneous insertion prevention portion. The connection between the battery pack and the second battery pack is allowed, and the second erroneous insertion prevention unit is configured to prohibit the connection of the first battery pack and allow the connection of the second battery pack.
本発明のさらに他の特徴によれば、第１の電気機器本体は第１の誤挿入防止部を有し、第２の電気機器本体は第２の誤挿入防止部を有し、第１の誤挿入防止部は第１の電池パック及び第２の電池パックの接続を許容し、第２の誤挿入防止部は第１の電池パックの接続を禁止し、第２の電池パックの接続を許容する。また、第１の電池パックは、第２の電池パックよりも外側に突出する突出部を有し、突出部と第２の誤挿入防止部によって第１の電池パックの第２の電気機器本体への接続を禁止するように構成した。さらに、第１の電池パックは第１のレール部の内側の領域に第１の端子部を有し、第１のレール部は第１の端子部よりも前方に延びており、突出部は、第１のレール部の内側において、第１の端子部よりも前方又は上方に突出して設けられるように構成した。 According to still another feature of the present invention, the first electric device main body has a first erroneous insertion preventing portion, the second electric device main body has a second erroneous insertion preventing portion, The erroneous insertion prevention part allows connection of the first battery pack and the second battery pack, and the second erroneous insertion prevention part prohibits connection of the first battery pack and allows connection of the second battery pack. I do. In addition, the first battery pack has a protrusion protruding outside the second battery pack, and the first battery pack is connected to the second electric device body of the first battery pack by the protrusion and the second erroneous insertion prevention portion. The connection is prohibited. Further, the first battery pack has a first terminal portion in a region inside the first rail portion, the first rail portion extends forward from the first terminal portion, and the projecting portion has It is configured such that it is provided inside the first rail portion so as to protrude forward or upward from the first terminal portion.
本発明のさらに他の特徴によれば、第１の電池パックは、下段面と上段面と、これらの面を接続する接続面と、接続面から上段面にかけて形成され、第１の端子部への入口となるスロットを有し、突出部は、スロットの開口端面よりも前方側であって接続面よりも前方に向けて凸状に突出するように形成される。また、第１の電池パックは、下段面と上段面と、これらの面を接続する接続面と、接続面から上段面にかけて形成され、第１の端子部への入口となるスロットと、を有し、第２の電池パックは、下段面と上段面と、これらの面を接続する接続面と、接続面から上段面にかけて形成され、第１の端子部への入口となるスロットと、スロットの上側外縁の周囲を囲むように形成された段差状の窪み部と、を有し、第２の誤挿入防止部は、第２の電気機器本体の端子の上部を保持するよう肉厚に形成された段差部からなり、段差部が第２の電池パックの窪み部に挿入されることで第２の電池パックと第２の電気機器本体との接続を許容し、段差部が第１の電池パックの接続面に当接することで第１の電池パックと第１の電気機器本体との接続を禁止するように構成した。 According to still another feature of the present invention, the first battery pack is formed from a lower surface, an upper surface, a connection surface connecting these surfaces, and a connection surface to an upper surface, and is connected to the first terminal portion. The protrusion is formed so as to protrude forward from the open end surface of the slot and forward from the connection surface. The first battery pack has a lower surface and an upper surface, a connection surface connecting these surfaces, and a slot formed from the connection surface to the upper surface and serving as an entrance to the first terminal portion. The second battery pack has a lower surface, an upper surface, a connection surface connecting these surfaces, a slot formed from the connection surface to the upper surface, serving as an entrance to the first terminal portion, and A step-shaped recess formed so as to surround the periphery of the upper outer edge, and the second erroneous insertion preventing portion is formed to be thick so as to hold an upper portion of the terminal of the second electric device main body. The second battery pack is connected to the second electric equipment body by inserting the step into the recess of the second battery pack, and the step is formed by the first battery pack. Prohibits connection between the first battery pack and the first electrical equipment body by contacting the connection surface of It was constructed to so that.
本発明のさらに他の特徴によれば、第１の電池パックは、下段面と上段面と、これらの面を接続する接続面と、接続面から上段面にかけて形成され、第１の端子部への入口となるスロットと、上段面から上方に突出する凸部と、を有し、凸部と第２の誤挿入防止部によって第１の電池パックの第２の電気機器本体への接続を禁止するように構成した電気機器システムとした。 According to still another feature of the present invention, the first battery pack is formed from a lower surface, an upper surface, a connection surface connecting these surfaces, and a connection surface to an upper surface, and is connected to the first terminal portion. And a protrusion projecting upward from the upper step surface, and the connection of the first battery pack to the second electric device body is prohibited by the protrusion and the second erroneous insertion preventing portion. Electrical equipment system configured to
本発明によれば、電池パックと電気機器本体との間に適切な互換性を有する新たな電気機器システムを提供することができる。また、従来の識別手段とは別の新たな識別手段を設けたため、定格出力が異なる電池パックが増えた場合も互換性を拡張することができる。また、新たな識別手段を設けたことにより、当該識別手段に対応する電気機器本体への接続は許容しつつ、従来の識別手段のみに対応した電気機器本体への接続を禁止することが可能となる。また、複数電圧の電池パックが使用可能な電気機器において、複数電圧の種類が３つ以上であっても、容易に装着可能／不可能を設定する干渉リブを設けることが可能となるので、共通のレール機構を用いつつ様々な定格電圧の電池パックを実現できる。特に、定格３６Ｖの高電圧電池パックを従来の定格１８Ｖの電池パックと共通のレール機構で実現すれば、３６Ｖ用の新しい電気機器本体に、従来の１８Ｖ用電池パックを装着可能とすることができ、広く互換性を保つことが可能となる。 ADVANTAGE OF THE INVENTION According to this invention, the new electric equipment system which has suitable compatibility between a battery pack and an electric equipment main body can be provided. In addition, since new identification means different from the conventional identification means is provided, compatibility can be extended even when the number of battery packs having different rated outputs increases. In addition, by providing a new identification means, it is possible to prohibit connection to the electric equipment main body corresponding to only the conventional identification means while permitting connection to the electric equipment main body corresponding to the identification means. Become. Also, in an electric device that can use a battery pack of a plurality of voltages, even if there are three or more types of a plurality of voltages, it is possible to provide an interference rib for easily setting whether or not the battery can be mounted. Battery packs of various rated voltages can be realized using the rail mechanism. In particular, if a 36V rated high-voltage battery pack is realized with the same rail mechanism as a conventional 18V battery pack, the conventional 18V battery pack can be mounted on a new 36V electric equipment body. , It is possible to maintain compatibility widely.
従来の電動工具本体１と、それに装着される従来の電池パック４０の装着方法を説明するための斜視図である。It is a perspective view for explaining the conventional electric tool main body 1 and the mounting method of the conventional battery pack 40 mounted to it. 本実施例に係る電気機器システムを示す図であって、電池パック４０、１４０の電動工具本体１、１０１への装着可否を説明するための図である。It is a figure which shows the electric equipment system which concerns on a present Example, and is a figure for demonstrating whether battery packs 40 and 140 can be attached to the electric power tool main bodies 1 and 101. 電力端子の電動工具本体への接続状態を説明するための端子部分の接続図である。It is a connection diagram of a terminal part for explaining the connection state of a power terminal to a power tool main part. 本願発明の第一の実施例に係る電池パック１４０の斜視図である。FIG. 2 is a perspective view of a battery pack 140 according to the first embodiment of the present invention. 図４の電池パック１４０に対応する電動工具本体１０１の下側から見た斜視図である。FIG. 5 is a perspective view of the power tool main body 101 corresponding to the battery pack 140 of FIG. 4 as viewed from below. 本願発明の第二の実施例に係る電池パック１４０Ａの斜視図である。FIG. 9 is a perspective view of a battery pack 140A according to a second embodiment of the present invention. 図６の電池パック１４０Ａに対応する電動工具本体１０１Ａの下側から見た斜視図である。FIG. 7 is a perspective view of the power tool main body 101A corresponding to the battery pack 140A of FIG. 6 as viewed from below. 本願発明の第三の実施例に係る電池パック１４０Ｂの斜視図である。FIG. 13 is a perspective view of a battery pack 140B according to a third embodiment of the present invention. 図８の電池パック１４０Ｂに対応する電動工具本体１０１Ｂの下側から見た斜視図である。FIG. 9 is a perspective view of the power tool main body 101B corresponding to the battery pack 140B of FIG. 8 as viewed from below. 本願発明の第四の実施例に係る電池パック１４０Ｃの斜視図である。FIG. 13 is a perspective view of a battery pack 140C according to a fourth embodiment of the present invention. 図１０の電池パック１４０Ｃに対応する電動工具本体１０１Ｃの下側から見た斜視図である。It is the perspective view seen from the lower side of the electric power tool main body 101C corresponding to the battery pack 140C of FIG.
以下、本発明の実施例を図面に基づいて説明する。以下の図において、同一の部分には同一の符号を付し、繰り返しの説明は省略する。本明細書においては、電気機器の一例として電池パックにて動作する電動工具を例示して説明するものとし、電動工具本体の前後左右の方向は図１に示す方向とし、電池パックの単体で見た際の前後左右、上下の方向は、電池パックの装着方向を基準として図１に示す方向であるとして説明する。尚、電池パックの装着方向は、説明の都合上、電動工具本体側を動かさずに電池パック側を移動させる状況を基準とした方向として説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same portions are denoted by the same reference numerals, and repeated description will be omitted. In this specification, a power tool that operates on a battery pack will be described as an example of an electric device. The front, rear, left, and right directions of the power tool body are the directions shown in FIG. It is assumed that the front, rear, left, right, and up and down directions are the directions shown in FIG. 1 based on the mounting direction of the battery pack. The mounting direction of the battery pack is described as a direction based on a situation in which the battery pack is moved without moving the power tool main body for convenience of description.
図１は従来の低出力の電動工具本体１と、それに装着される従来の電池パック４０の装着方法を説明するための斜視図である。電動工具は、電動工具本体１とそれに装着される電池パック４０によって構成され、モータによる回転駆動力を用いて図示しない先端工具や図示しない作業機器を駆動する。電動工具本体１は、外形を形成する外枠たるハウジング２を備え、ハウジング２にはハンドル部３が形成され、ハンドル部３の上端付近には、作業者が操作するトリガスイッチ４が設けられる。ハウジング２の胴体部の先端には、先端工具装着部７が設けられる。ハンドル部３の下方には、電池パック４０を装着するための電池パック装着部１０が形成される。 FIG. 1 is a perspective view for explaining a conventional low output power tool main body 1 and a method for mounting a conventional battery pack 40 mounted thereon. The power tool is composed of the power tool body 1 and a battery pack 40 mounted on the power tool main body, and drives a tip tool (not shown) and work equipment (not shown) by using a rotational driving force of a motor. The power tool main body 1 includes a housing 2 that is an outer frame that forms an outer shape. A handle portion 3 is formed in the housing 2, and a trigger switch 4 operated by an operator is provided near an upper end of the handle portion 3. A tip tool mounting portion 7 is provided at the tip of the body portion of the housing 2. A battery pack mounting portion 10 for mounting the battery pack 40 is formed below the handle portion 3.
電池パック４０は矢印８の方向に移動させることで電動工具本体１に装着できる。電池パック４０の左右両側にはレール溝４６、４８（図１では４８は見えない）が形成される。電池パック４０が電動工具本体１に装着されるとラッチ機構によって電池パック４０が固定される。ラッチ機構は電池パック４０の後方の上部、左右方向にみて中央に形成され、１つの大きなラッチボタン５５が左右中央に設けられ、ラッチボタン５５に連動して移動するラッチ爪５５ａがその前方から上側に突出する。電池パック４０が電動工具本体１に装着されている状態では、ラッチボタン５５を押してから電池パック４０を矢印８と反対方向に相対移動させることで、電池パック４０を電動工具本体１から取り外すことができる。電池パック４０は、合成樹脂製のハウジング４１の内部に複数本の円柱形の電池セル（図では見えない）を収容するものであり、電池セルを複数本直列に接続して所定の定格電圧の出力を得ている。例えば、定格３．６Ｖのリチウムイオン電池セルを複数接続して、７．２Ｖ、１０．８Ｖ（公称１２Ｖ）、１４．４Ｖ、１８Ｖ等の出力を得ることができる。 The battery pack 40 can be mounted on the power tool body 1 by moving in the direction of arrow 8. Rail grooves 46, 48 (48 are not visible in FIG. 1) are formed on both left and right sides of the battery pack 40. When the battery pack 40 is mounted on the power tool main body 1, the battery pack 40 is fixed by the latch mechanism. The latch mechanism is formed at the rear upper part of the battery pack 40, at the center in the left-right direction, one large latch button 55 is provided at the left and right center, and a latch claw 55a that moves in conjunction with the latch button 55 has an upper side from the front. Protrude into. When the battery pack 40 is mounted on the power tool body 1, the battery pack 40 can be removed from the power tool body 1 by pressing the latch button 55 and then relatively moving the battery pack 40 in the direction opposite to the arrow 8. it can. The battery pack 40 accommodates a plurality of cylindrical battery cells (not shown in the drawing) inside a housing 41 made of a synthetic resin, and connects a plurality of battery cells in series to obtain a predetermined rated voltage. Getting the output. For example, an output of 7.2 V, 10.8 V (nominal 12 V), 14.4 V, 18 V, or the like can be obtained by connecting a plurality of lithium ion battery cells having a rating of 3.6 V.
図２は低出力の電池パック４０と高出力の電池パック１４０の、電動工具本体１、１０１への装着可否を説明するための図である。本実施例では１８Ｖの電池パック４０のレール機構を用いて、定格３６Ｖの新たな高出力の電動工具本体１０１と、それに対応する高出力の電池パック１４０を実現した。電動工具本体１、１０１は、ハウジング２、１０２、ハンドル部３、１０３、トリガスイッチ４、１０４が設けられ、ハンドル部３、１０３の下方には電池パック４０、１４０を装着するための電池パック装着部１０、１１０が形成される。図２の例では１８Ｖ電動工具本体１、３６Ｖ電動工具本体１０１が同じような形状のインパクト工具として図示しているが、実際に適用される低電圧電動工具と、高電圧電動工具の種類は任意である。また、大きさ的にも図２の例ではほぼ同じハウジング２、１０２として図示したが、実際には３６Ｖ電動工具本体１０１の方が大きいことが多い。 FIG. 2 is a diagram for explaining whether or not the low-output battery pack 40 and the high-output battery pack 140 can be attached to the power tool main bodies 1 and 101. In this embodiment, a new high-powered power tool main body 101 rated at 36 V and a corresponding high-powered battery pack 140 are realized using the rail mechanism of the 18 V battery pack 40. The power tool main bodies 1 and 101 are provided with housings 2 and 102, handle portions 3 and 103, and trigger switches 4 and 104. A battery pack mounting for mounting the battery packs 40 and 140 below the handle portions 3 and 103 is provided. Parts 10, 110 are formed. In the example of FIG. 2, the 18V power tool main body 1 and the 36V power tool main body 101 are illustrated as impact tools having the same shape, but the type of the low voltage power tool and the type of the high voltage power tool to be actually applied are arbitrary. It is. Although the housings 2 and 102 are shown as being substantially the same in size in the example of FIG. 2, the 36V power tool main body 101 is often larger in practice.
電動工具本体１の電池パック装着部１０にはレール部として、左右両側の内壁部分に前後方向に平行に延びるレール２６、２８が形成され、左右のレール２６、２８に囲まれる空間部分にターミナル部１１が設けられる。ターミナル部１１は、合成樹脂等の不導体材料の一体成形により製造され、装着方向（前後方向）の突き当て面となる垂直面１３と、水平面１２が形成され、水平面１２は電池パック４０の装着時に、上段面４４と隣接、対向する面となる。上段面４４はレール溝４６、４８を形成するレール部の上面（レール溝４６、４８の右側側面４７及び左側側面４９の上端部分）を基準とすると、レール部の上面と同一の高さ又はその上面よりも高い位置に設けられている。ターミナル部１１には金属製の複数の端子、例えば正極入力端子３１、負極入力端子３２、ＬＤ端子（異常信号端子）３３が設けられる。正極入力端子３１、負極入力端子３２は金属の平板にて形成され、装着方向の長さがレール２６、２８の長手方向の長さの半分以上の十分な長さを有する。ＬＤ端子３３は正極入力端子３１の左側に隣接するように配置され、ＬＤ端子３３は正極入力端子３１と平行に配置される。 Rails 26 and 28 are formed on the inner wall portions on both left and right sides of the battery pack mounting portion 10 of the power tool main body 1 as rail portions, and extend in the front-rear direction in parallel with each other. 11 are provided. The terminal portion 11 is manufactured by integral molding of a non-conductive material such as a synthetic resin, and has a vertical surface 13 serving as an abutting surface in a mounting direction (front-rear direction) and a horizontal surface 12, and the horizontal surface 12 is used for mounting the battery pack 40. Occasionally, the upper surface 44 is adjacent to and opposed to the upper surface 44. The upper step surface 44 has the same height or the same height as the upper surface of the rail portion with reference to the upper surface of the rail portion forming the rail grooves 46, 48 (the upper end portion of the right side surface 47 and the left side surface 49 of the rail groove 46, 48). It is provided at a position higher than the upper surface. The terminal unit 11 is provided with a plurality of metal terminals, for example, a positive input terminal 31, a negative input terminal 32, and an LD terminal (abnormal signal terminal) 33. The positive input terminal 31 and the negative input terminal 32 are formed of a metal flat plate, and have a sufficient length in the mounting direction that is at least half the length of the rails 26 and 28 in the longitudinal direction. The LD terminal 33 is disposed adjacent to the left side of the positive input terminal 31, and the LD terminal 33 is disposed in parallel with the positive input terminal 31.
電動工具本体１０１は定格電圧３６Ｖで動作する。電動工具本体１０１のターミナル部１１１は、電動工具本体１のターミナル部１１とほぼ同じ形状である。ターミナル部１１１を構成する垂直面１１３、水平面１１２は、電動工具本体１の垂直面１３、水平面１２とほぼ同じ形状である。レール１２６、１２８、正極入力端子１３１、負極入力端子１３２、ＬＤ端子１３３は、電動工具本体１と同じサイズで形成される。 The power tool main body 101 operates at a rated voltage of 36V. The terminal part 111 of the power tool main body 101 has substantially the same shape as the terminal part 11 of the power tool main body 1. The vertical surface 113 and the horizontal surface 112 constituting the terminal portion 111 have substantially the same shape as the vertical surface 13 and the horizontal surface 12 of the power tool main body 1. The rails 126 and 128, the positive input terminal 131, the negative input terminal 132, and the LD terminal 133 are formed in the same size as the power tool main body 1.
電池パック４０の上側は、前方側に平らな下段面４２が形成され、中央付近は下段面４２よりも高く形成された上段面４４が形成される。下段面４２はレール溝４６、４８を形成するレール部の上面を基準とすると、レール部の上面よりも低い位置であってレール溝４６、４８の下面と略同一の高さ位置に設けられている。なお本実施例の下段面４２はレール溝４６、４８の下面よりも高く、且つ、レール溝４６、４８の上面よりも低い位置に設定されている。下段面４２と上段面４４の接続部分は延長面となる段差部（接続面、垂直面）４３が形成され、段差部４３に機器側端子を挿入するためのスロット群が配置される。スロット群は、前後方向に長い切り欠きのような大きなスロット５１、５２と、それらの半分程度の長さのスロット５３が形成される。スロット５１が正極端子用の第１のスロットになり、スロット５２が負極端子用の第２のスロットになり、スロット５３がＬＤ端子用の第３のスロットになる。この切り欠かれたスロット５１、５２の内部には、電動工具本体１側の本体側接続端子と嵌合可能な複数の電池側接続端子（図３にて後述する１６１、１６２、１７１、１７２）が設けられる。尚、ここではスロットが３つだけ設けられているが、さらにスロットを設けるように構成しても良いし、スロット５３と５２の間の空間に、電動工具本体１側のコネクタに接続される信号伝達用のコネクタを配置するようにしても良い。上段面４４の右側側面と左側側面には、レール溝４６、４８が形成される。レール溝４６、４８は右側側面４７及び左側側面４９から内側に窪む凹部のような形状である。上段面４４の後方側には隆起部４５が設けられ、その後方側にはラッチボタン５５が設けられる。ラッチボタン５５の前方側にはラッチ爪５５ａが配置される。 On the upper side of the battery pack 40, a flat lower step surface 42 is formed on the front side, and near the center, an upper step surface 44 formed higher than the lower step surface 42 is formed. The lower step surface 42 is provided at a position lower than the upper surface of the rail portion with reference to the upper surface of the rail portion forming the rail groove 46, 48 and at substantially the same height position as the lower surface of the rail groove 46, 48. I have. In this embodiment, the lower step surface 42 is set at a position higher than the lower surfaces of the rail grooves 46 and 48 and lower than the upper surfaces of the rail grooves 46 and 48. A connecting portion between the lower step surface 42 and the upper step surface 44 is formed with a step portion (connection surface, vertical surface) 43 as an extension surface, and a slot group for inserting a device-side terminal is arranged in the step portion 43. In the slot group, large slots 51 and 52 such as notches that are long in the front-rear direction, and a slot 53 having a length of about half of those slots are formed. The slot 51 becomes a first slot for the positive terminal, the slot 52 becomes a second slot for the negative terminal, and the slot 53 becomes a third slot for the LD terminal. A plurality of battery-side connection terminals (161, 162, 171 and 172, which will be described later with reference to FIG. 3) that can be fitted into the body-side connection terminals of the power tool body 1 are provided inside the cutout slots 51 and 52. Is provided. Here, although only three slots are provided, a configuration may be adopted in which a further slot is provided, and a signal connected to the connector of the power tool main body 1 is provided in a space between the slots 53 and 52. A transmission connector may be arranged. Rail grooves 46 and 48 are formed on the right and left side surfaces of the upper step surface 44. The rail grooves 46 and 48 have a shape like a concave portion that is depressed inward from the right side surface 47 and the left side surface 49. A raised portion 45 is provided on the rear side of the upper step surface 44, and a latch button 55 is provided on the rear side. A latch claw 55a is disposed in front of the latch button 55.
電池パック１４０は、装着機構を１８Ｖの電池パック４０と共通のインターフェース、即ち、共通のレール機構を用いて形成され、特にレール溝１４６、１４８のサイズ（前後長、左右間隔、上下幅等）は共通である。電池パック１４０の上側は、下段面１４２、段差部１４３、上段面１４４が形成され、段差部１４３から上段面１４３にかけて機器側端子を挿入するためのスロット群（正極端子用の第１のスロット１５１、負極端子用の第２のスロット１５２、ＬＤ端子用の第３のスロット１５３）が配置される。電池パック４０と同様、上段面１４４はレール溝１４６、１４８を形成するレール部の上面（レール溝１４６、１４８の右側側壁１４７及び左側側壁１４９の上端部分）を基準とすると、レール部の上面と同一の高さ又はその上面よりも高い位置に設けられている。第１のスロット１５１及び第２のスロット１５２はレール部の内側に隣接して設けられる。第１のスロット１５１はレール溝１４６（右側側壁１４７）の内側に隣接し、第２のスロット１５２はレール溝１４８（左側側壁１４９）の内側に隣接して設けられる。下段面１４２はレール溝１４６、１４８を形成するレール部の上面を基準とすると、レール部の上面よりも低い位置であってレール溝１４６、１４８の下面と略同一の高さ位置に設けられている。なお本実施例の下段面１４２はレール溝１４６、１４８の下面よりも高く、且つ、レール溝１４６、１４８の上面よりも低い位置に設定されている。また、第１のスロット１５１、第２のスロット１５２の上部（の開口周囲）には、後述する電動工具本体１０１（ターミナル部１１１）の段差部１３６、１３７が挿入される段差状の窪み１５５、１５６（図４参照）が形成されている、これらのレール機構の形状は、定格１８Ｖの電池パック４０に比べて同一であるが、唯一の構成上の違いは、誤装着防止用の干渉リブ１５７を設けた点である。干渉リブ１５７は、電池パック１４０の下段面１４２から段差部１４３に至る部分に形成されるものであって、下段面１４２から上方に突出する略直方体状に形成される。略直方体状の干渉リブ１５７の後方面１５７ｂは段差部１４３に密接するように接続され、干渉リブ１５７の底面は下段面１４２と密接するように接続される。干渉リブ１５７の前側側面は、鉛直な突き当て面１５７ａ（符号は図４参照）であり、突き当て面１５７ａが電動工具本体１又は１０１側の電池パック装着部１０、１１０の壁面に干渉するか、干渉しないかの違いによって、電池パック１４０を電動工具本体１又は１０１に装着できるか否かが決定される。 The battery pack 140 has a mounting mechanism that is formed using a common interface with the 18V battery pack 40, that is, a common rail mechanism. In particular, the size of the rail grooves 146 and 148 (front-back length, left-right space, up-down width, etc.) It is common. On the upper side of the battery pack 140, a lower step surface 142, a step portion 143, and an upper step surface 144 are formed, and a slot group (a first slot 151 for a positive electrode terminal) for inserting a device side terminal from the step portion 143 to the upper step surface 143. , A second slot 152 for a negative electrode terminal, and a third slot 153 for an LD terminal. Similarly to the battery pack 40, the upper surface 144 is defined by the upper surface of the rail portion forming the rail grooves 146 and 148 (the upper end portion of the right side wall 147 and the left side wall 149 of the rail groove 146 and 148). They are provided at the same height or at a position higher than the upper surface thereof. The first slot 151 and the second slot 152 are provided adjacent to the inside of the rail portion. The first slot 151 is provided adjacent to the inside of the rail groove 146 (the right side wall 147), and the second slot 152 is provided adjacent to the inside of the rail groove 148 (the left side wall 149). The lower step surface 142 is provided at a position lower than the upper surface of the rail portion and substantially at the same height position as the lower surface of the rail groove 146, 148 with reference to the upper surface of the rail portion forming the rail groove 146, 148. I have. Note that the lower step surface 142 of this embodiment is set at a position higher than the lower surfaces of the rail grooves 146 and 148 and lower than the upper surfaces of the rail grooves 146 and 148. Above the first slot 151 and the second slot 152 (around the opening), a step-shaped recess 155 into which steps 136 and 137 of the power tool main body 101 (terminal 111) described later are inserted, 156 (see FIG. 4) are formed in the same shape as those of the battery pack 40 having a rating of 18 V, but the only difference in the configuration is the interference rib 157 for preventing erroneous mounting. Is provided. The interference rib 157 is formed in a portion extending from the lower surface 142 of the battery pack 140 to the step portion 143, and is formed in a substantially rectangular parallelepiped shape projecting upward from the lower surface 142. The rear surface 157b of the substantially rectangular parallelepiped interference rib 157 is connected so as to be in close contact with the step portion 143, and the bottom surface of the interference rib 157 is connected so as to be in close contact with the lower step surface 142. The front side surface of the interference rib 157 is a vertical abutting surface 157a (reference numeral is shown in FIG. 4), and whether the abutting surface 157a interferes with the wall surface of the battery pack mounting portion 10, 110 on the power tool main body 1 or 101 side. It is determined whether or not the battery pack 140 can be mounted on the power tool main body 1 or 101 depending on whether or not there is interference.
新たな３６Ｖの電池パック１４０の新設に合わせて、電池パック１４０を使用できる新たな電動工具本体１０１を実現した。電動工具本体１０１の電池パック装着部１１０には、電池パック１４０の装着時に干渉リブ１５７を収容するための空間、即ち凹部１３８が形成される。一方、従来の電動工具本体１の該当部分には、凹部１３８に相当する部分が無くて、壁面３８になっている。従って、３６Ｖの電池パック１４０は電動工具本体１０１には装着可能となるが、１８Ｖ用の電動工具本体１には干渉リブ１５７が壁面３８と干渉するため装着できない。また、干渉リブ１５７は、正極側接続端子のスロット１５１の入口よりも前方側に配置されるため、電池パック１４０を電動工具本体１に装着しようと試みて、干渉リブ１５７が壁面３８に当接した際には、電動工具本体１側の正極入力端子３１が電池パック１４０の第１のスロット１５１内に挿入される前である。同様にして、電動工具本体１側の負極入力端子３２、ＬＤ端子３３が電池パック１４０の第２のスロット１５２、第３のスロット１５３に挿入される前に干渉リブ１５７が壁面３８に当接する。従って、３６Ｖ用の電池パック１４０を従来の電気機器本体１に装着しようとしても、電池パック１４０側の出力端子群と電気機器本体１側の入力端子群が接触することはない。凹部１３８が第１の誤挿入防止部に相当し、壁面３８が第２の誤挿入防止部に相当する。 In accordance with the new installation of the new 36V battery pack 140, a new power tool main body 101 that can use the battery pack 140 is realized. A space for accommodating the interference rib 157 when the battery pack 140 is mounted, that is, a concave portion 138 is formed in the battery pack mounting portion 110 of the power tool main body 101. On the other hand, the corresponding portion of the conventional power tool main body 1 does not have a portion corresponding to the concave portion 138 and has a wall surface 38. Therefore, the 36 V battery pack 140 can be mounted on the power tool main body 101, but cannot be mounted on the 18 V power tool main body 1 because the interference rib 157 interferes with the wall surface 38. In addition, since the interference rib 157 is disposed on the front side of the entrance of the slot 151 of the positive electrode side connection terminal, an attempt is made to mount the battery pack 140 on the power tool main body 1, and the interference rib 157 contacts the wall surface 38. This is before the positive electrode input terminal 31 on the power tool body 1 side is inserted into the first slot 151 of the battery pack 140. Similarly, before the negative input terminal 32 and the LD terminal 33 on the power tool main body 1 side are inserted into the second slot 152 and the third slot 153 of the battery pack 140, the interference rib 157 contacts the wall surface 38. Therefore, even if the battery pack 140 for 36 V is to be mounted on the conventional electric device main body 1, the output terminal group on the battery pack 140 side does not come into contact with the input terminal group on the electric device main body 1 side. The recess 138 corresponds to a first erroneous insertion prevention unit, and the wall surface 38 corresponds to a second erroneous insertion prevention unit.
従来の１８Ｖの電池パック４０と、新たな３６Ｖの電池パック１４０の装着関係を示したのが、図２の中央の実線又は点線の矢印である。３６Ｖの電池パック１４０は、実線矢印Ｃに示すように、３６Ｖの電動工具本体１０１に装着可能であるが、点線矢印Ｄに示すように１８Ｖの電動工具本体１には装着不能である。通常、３６Ｖ用の電池パック１４０が１８Ｖの電動工具本体１で稼動不能とするには２つの方法が考えられる。一つは、電池パック１４０が電動工具本体１に装着可能ではあるが、電気的な接続が阻止されて実質的に稼動しない方法である（電気的阻止方法）。もう一つは、電池パック１４０が電動工具本体１に物理的に装着不能とする方法である（機械的阻止方法）。本実施例では、後者を採用して、電池パック１４０が電動工具本体１に装着できないように構成した。この構成によって作業者が誤って低電圧の電動工具本体１に高電圧の電池パック１４０を装着しようとしても、干渉リブ１５７によって装着ができないので、電動工具本体１に対応しない電池パック１４０の誤装着を確実に防止できる。 The mounting relationship between the conventional 18V battery pack 40 and the new 36V battery pack 140 is indicated by the solid or dotted arrow in the center of FIG. The 36V battery pack 140 can be mounted on the 36V power tool main body 101 as indicated by the solid arrow C, but cannot be mounted on the 18V power tool main body 1 as indicated by the dotted arrow D. Normally, two methods are conceivable for making the 36 V battery pack 140 inoperable with the 18 V electric tool body 1. One is a method in which the battery pack 140 can be mounted on the power tool main body 1, but the electric connection is blocked and the battery pack 140 is not substantially operated (electric blocking method). The other is a method in which the battery pack 140 cannot be physically attached to the power tool main body 1 (mechanical blocking method). In the present embodiment, the latter is adopted so that the battery pack 140 cannot be mounted on the power tool body 1. With this configuration, even if an operator erroneously attempts to mount the high-voltage battery pack 140 on the low-voltage power tool main body 1, the mounting cannot be performed by the interference rib 157. Can be reliably prevented.
１８Ｖの電池パック４０には干渉リブ１５７が設けられていないため、電池パック４０は実線矢印Ａに示すように電動工具本体１に装着可能であるが、これに加えて実線矢印Ｂに示すように電動工具本体１０１にも装着可能である。これはレール機構を共通化したことによる当然の帰結である。低電圧の電池パック４０を、高電圧の電動工具本体１０１の電気機器に装着すると、電気機器の種類によってはほぼ正常に稼動する場合、稼動しない場合、稼動しても出力が不十分になる場合の３つのケースが想定される。電動工具本体１０１が、インパクトドライバの場合では、低電圧の電池パック４０ではモータの駆動力が十分でないものの、短時間の稼動ができるようにも構成できる。このような限定的な使用しかできない場合であっても、３６Ｖ用の電池パック１４０が手元に無い場合、又はあっても放電している場合には、電池パック４０による限定的な使用を可能とすればユーザにとって便利な状況がある。 Since the 18V battery pack 40 is not provided with the interference rib 157, the battery pack 40 can be mounted on the power tool main body 1 as shown by a solid arrow A. In addition, as shown by a solid arrow B, The power tool main body 101 can also be mounted. This is a natural consequence of sharing the rail mechanism. When the low-voltage battery pack 40 is mounted on the electric device of the high-voltage power tool main body 101, depending on the type of the electric device, the device operates almost normally, does not operate, or has insufficient output even if it operates. The following three cases are assumed. When the power tool main body 101 is an impact driver, a low-voltage battery pack 40 does not have sufficient motor driving force, but can be operated in a short time. Even when such a limited use is possible, if the 36 V battery pack 140 is not at hand, or if there is any discharge, the limited use by the battery pack 40 is possible. Then there are situations that are convenient for the user.
図３は、電動工具本体１０１の接続端子と電池パック１４０の接続端子との接続状態を示す斜視図である。電池パック１４０のスロット１５１（図２参照）の内部には、２つの正極出力端子１６１、１７１が装着方向（前後方向）に並べて配置される。同様にしてスロット１５２（図２参照）の内部には、２つの負極端子１６２、１７２が装着方向に並べて配置される。ここでは正極出力端子１６１と１７１は所定の距離を隔てて非接触状態にてスロット１５１内に配置され、負極出力端子１６２と１７２は所定の距離を隔てて非接触状態にてスロット１５２内に配置される。しかしながら、正極出力端子１６１と１７１は配線によって電気的に導通され、負極出力端子１６２と１７２は配線によって電気的に導通される。 FIG. 3 is a perspective view showing a connection state between a connection terminal of power tool main body 101 and a connection terminal of battery pack 140. Inside the slot 151 (see FIG. 2) of the battery pack 140, two positive output terminals 161 and 171 are arranged side by side in the mounting direction (front-back direction). Similarly, inside the slot 152 (see FIG. 2), two negative electrode terminals 162 and 172 are arranged side by side in the mounting direction. Here, the positive output terminals 161 and 171 are arranged in the slot 151 in a non-contact state at a predetermined distance, and the negative output terminals 162 and 172 are arranged in the slot 152 in a non-contact state at a predetermined distance. Is done. However, the positive output terminals 161 and 171 are electrically connected by wiring, and the negative output terminals 162 and 172 are electrically connected by wiring.
電池パック１４０に収容される電池セル組１８０、１９０はそれぞれ５本の直列接続されたものであって、ここでは２つの電池セル組１８０、１９０がさらに直列接続される。電池セル組１８０、１９０を構成する電池セルとしては充放電可能な二次電池が用いられ、例えば定格電圧３．６Ｖのリチウムイオン電池である。従って、正極端子（１６１、１７１）と負極端子（１６２、１７２）の間には定格電圧３６Ｖの直流電力が供給される。 Each of the battery cell sets 180 and 190 accommodated in the battery pack 140 is connected in series, and here, two battery cell sets 180 and 190 are further connected in series. As the battery cells constituting the battery cell sets 180 and 190, chargeable / dischargeable secondary batteries are used, for example, lithium ion batteries having a rated voltage of 3.6V. Therefore, a DC power of a rated voltage of 36 V is supplied between the positive terminal (161, 171) and the negative terminal (162, 172).
電動工具本体１０１の接続端子は、正極入力端子１３１と、負極入力端子１３２を含んで構成される。電動工具本体１０１側において正極入力端子１３１と負極入力端子１３２から入力される直流電力は、トリガスイッチ１０４を介在させてモータ１０５に供給される。図３では説明を容易にするために本体側接続端子（１３１、１３２）とモータ１０５が直接接続される回路で図示しているが、図示しないインバータ回路を介してモータ１０５を駆動するように構成しても良い。電動工具本体１０１の接続端子（１３１、１３２）が点線矢印のように相対的に移動されて、電池パック１４０の接続端子群（１６１と１７１、１６２と１７２）の間に挿入されるように構成される。 The connection terminals of the power tool main body 101 include a positive input terminal 131 and a negative input terminal 132. DC power input from the positive input terminal 131 and the negative input terminal 132 on the power tool main body 101 side is supplied to the motor 105 via the trigger switch 104. Although FIG. 3 shows a circuit in which the main body side connection terminals (131, 132) and the motor 105 are directly connected to facilitate the description, the motor 105 is driven via an inverter circuit (not shown). You may. The configuration is such that the connection terminals (131, 132) of the power tool main body 101 are relatively moved as indicated by dotted arrows and inserted between the connection terminal groups (161 and 171, 162 and 172) of the battery pack 140. Is done.
正極入力端子１３１は、クランク状に折り曲げられた金属板材であり、前側の正極出力端子１６１と後側の正極出力端子１７１と同時に嵌合するように十分な長さに形成される。同様にして、負極入力端子１３２は、クランク状に折り曲げられた金属板材であり、前側の負極出力端子１６２と後側の負極出力端子１７２と同時に嵌合するように十分な長さに形成される。正極入力端子１３１と負極入力端子１３２は面対称となるように配置され、クランク状に折り曲げられた部分は、合成樹脂製のターミナル部１１１（図２参照）の部分に鋳込まれることによって安定して保持される。正極入力端子１３１と負極入力端子１３２の後端は、モータ１０５側への配線に半田付けされる。 The positive input terminal 131 is a metal plate material bent in a crank shape, and is formed with a sufficient length so as to be fitted simultaneously with the front positive output terminal 161 and the rear positive output terminal 171. Similarly, the negative input terminal 132 is a metal plate bent in a crank shape, and is formed with a sufficient length so as to be fitted simultaneously with the front negative output terminal 162 and the rear negative output terminal 172. . The positive input terminal 131 and the negative input terminal 132 are arranged so as to be plane-symmetric, and the portion bent in a crank shape is stabilized by being cast into the terminal portion 111 (see FIG. 2) made of synthetic resin. Is held. The rear ends of the positive input terminal 131 and the negative input terminal 132 are soldered to wiring to the motor 105 side.
正極出力端子１６１と１７１、負極出力端子１６２と１７２は、本体側接続端子挿入方向（点線矢印で示す方向）から見た形状が倒立したΩ形の形状とされ、これらは共通部品が用いられる。その形状を負極出力端子１７２にて説明すると、電池パック１４０内の図示しない回路基板に固定するための長方形の平板部１７２ａが形成され、平板部１７２ａが半田付け又は図示しないネジ止めによって回路基板に固定される。平板部１７２ａの左右両側辺部から上方向には、平板部１７２ａの左右両端から折り曲げられた２つの腕部１７２ｂが形成される。２つの腕部１７２ｂ、１７２ｃは上方向に行くにつれてお互いが接近するように曲げられて、腕部１７２ｂの上端部分は平行になるように所定の間隔を隔てた端子部１７２ｃが配置される。端子部１７２ｃは、非接触状態に保持される略長方形の電極であって、その前側及び後側が対向する接触端子部から離れて開口するように曲げられており、本体側接続端子が前から後ろ方向に嵌合されやすいような形状とされる。 The positive output terminals 161 and 171 and the negative output terminals 162 and 172 have an inverted Ω shape as viewed from the main body side connection terminal insertion direction (the direction indicated by the dotted arrow), and common components are used. Explaining the shape with the negative output terminal 172, a rectangular flat plate portion 172a for fixing to a circuit board (not shown) in the battery pack 140 is formed, and the flat plate portion 172a is attached to the circuit board by soldering or screwing (not shown). Fixed. Two arm portions 172b bent from both left and right ends of the flat plate portion 172a are formed upward from both left and right side portions of the flat plate portion 172a. The two arms 172b and 172c are bent so as to approach each other as going upward, and terminal portions 172c are arranged at predetermined intervals so that the upper ends of the arms 172b are parallel. The terminal portion 172c is a substantially rectangular electrode that is held in a non-contact state, and is bent so that the front side and the rear side are separated from the contact terminal portion facing each other, and the main body side connection terminal is positioned from the front to the rear. The shape is such that it is easily fitted in the direction.
図４は本願発明の第一の実施例に係る電池パック１４０の斜視図である。本図は図２で示した図と同じである。定格出力３６Ｖの電池パック１４０は、定格出力１８Ｖの電池パック４０に比べて、外観上の違いは１つだけ、即ち、干渉リブ１５７を設けたことである。干渉リブ１５７は左右方向にみて正極側スロット１５１とＬＤ端子用スロット１５３の間（接続面）であって、段差部１４３の前方側に配置される。干渉リブ１５７は、段差部１４３の鉛直面よりも前方側であって、レール溝１４６、１４８の前端位置よりもやや前方位置（前壁１５７ａ）から段差部１４３にかけて形成されるもので、合成樹脂でできた直方体である。ここでは干渉リブ１５７は、前後方向に見て段差部１４３からレール溝１４６、１４８の前端位置まで延び、その距離はＬ１となる。本実施例では、一点鎖線で示すレール溝１４６、１４８の前端位置よりも干渉リブ１５７が前方側にまで延びるように形成されるが、レール溝１４６、１４８の前端位置と同位置に前壁１５７ａが位置するようにしても良いし、レール溝１４６、１４８の前端位置よりわずかに後側に前壁１５７ａが位置するようにしても良い。レール溝１４６、１４８は前後方向において距離Ｌの長さを有し、そのうちの大部分において、上側に側壁１４７、１４９が形成される。側壁１４７、１４９はレール溝１４６、１４８の後端よりも後方側にまで延びて、隆起部１４５に接続される。尚、右側のレール１４６には上面から下方向に切り欠かれた切り欠き部１４６ｂが設けられる。切り欠き部１４６ｂは、定格電圧の異なる他の電動工具本体（例えば定格１４．４Ｖの電動工具本体）への装着を阻止又は阻害するために形成される識別用のスリットである。この切り欠き部は図２に示すように１８Ｖの電池パック４０にも形成（切り欠き部４６ｂ）されている。 FIG. 4 is a perspective view of the battery pack 140 according to the first embodiment of the present invention. This figure is the same as the figure shown in FIG. The battery pack 140 with a rated output of 36 V has only one difference in appearance compared to the battery pack 40 with a rated output of 18 V, that is, an interference rib 157 is provided. The interference rib 157 is located between the positive electrode side slot 151 and the LD terminal slot 153 (connection surface) as viewed in the left-right direction, and is disposed in front of the step portion 143. The interference rib 157 is formed on the front side of the vertical surface of the stepped portion 143 and slightly from the front end position (front wall 157a) of the rail grooves 146 and 148 to the stepped portion 143, and is formed of a synthetic resin. It is a rectangular parallelepiped made of. Here, the interference rib 157 extends from the step 143 to the front end positions of the rail grooves 146 and 148 when viewed in the front-rear direction, and the distance is L1. In this embodiment, the interference rib 157 is formed so as to extend to the front side from the front end positions of the rail grooves 146 and 148 indicated by the dashed line, but the front wall 157a is located at the same position as the front end positions of the rail grooves 146 and 148. May be located, or the front wall 157a may be located slightly behind the front end positions of the rail grooves 146 and 148. The rail grooves 146 and 148 have a length L in the front-rear direction, and most of them have side walls 147 and 149 formed on the upper side. The side walls 147 and 149 extend to the rear side from the rear ends of the rail grooves 146 and 148, and are connected to the raised portions 145. It should be noted that the right rail 146 is provided with a cutout portion 146b that is cutout downward from the upper surface. The cutout portion 146b is an identification slit formed to prevent or hinder attachment to another power tool main body having a different rated voltage (for example, a power tool main body rated at 14.4 V). As shown in FIG. 2, the notch is also formed on the 18V battery pack 40 (notch 46b).
図５は電池パック１４０に対応する電動工具本体１０１の下側から見た斜視図である。ターミナル部１１１は合成樹脂製で有り、正極入力端子１３１と負極入力端子１３２が鋳込まれている。また、ＬＤ端子１３３となる金属端子部品が鋳込まれている。正極入力端子１３１と負極入力端子１３２は、後方側のクランク状に折り曲げられた部分（図３参照）が鋳込まれるだけでなく、上辺部分が鋳込まれる。さらには、正極入力端子１３１と負極入力端子１３２の上辺近傍には、補強のために段差状に肉厚とされた段差部１３６、１３７が形成され、正極入力端子１３１と負極入力端子１３２を強固に保持するようにしている。ターミナル部１１１の後方側一部には、凹部１３８が形成される。凹部１３８は、合成樹脂の成形品の一部を切り落としたような形状であり、電池パック１４０が電動工具本体１０１に装着された際に、干渉リブ１５７（図４参照）が位置する空間となる。この凹部１３８を設けたことによって、３６Ｖの電池パック１４０の装着が可能となる。一方、１８Ｖ用の電動工具本体１には、凹部１３８のような干渉リブ１５７の収容空間が存在しない（図２参照）。その代わりに壁面３８が形成されている。しかしながら、電池パック４０側に干渉リブ１５７のような凸部が存在しないために、凹部１３８が存在しても電池パック４０の装着には影響しない。その他の形状、特にレール１２６、１２８のそれぞれの寸法、特に前後方向の長さ、左右方向の幅、上下方向の高さは同じであり、レール１２６とレール１２８の間隔も、低電圧の電池パック４０が装着可能な電動工具本体１のレール２６とレール２８の間隔と同様である。また、異常信号を伝達するＬＤ端子１３３も電動工具本体１と同規格にて設けられ、電池パック４０や電池パック１４０側から過放電又は過温度等の異常発生を示す信号を電動工具本体１０１側に伝達することができる。電動工具本体１０１に含まれる図示しない演算部のマイクロコンピュータは、ＬＤ端子１３３を介して異常発生信号を受信したら、動作を停止させる。 FIG. 5 is a perspective view of the power tool main body 101 corresponding to the battery pack 140 as viewed from below. The terminal portion 111 is made of synthetic resin, and has a positive input terminal 131 and a negative input terminal 132 cast therein. Also, a metal terminal component to be the LD terminal 133 is cast. In the positive electrode input terminal 131 and the negative electrode input terminal 132, not only a part bent in a crank shape on the rear side (see FIG. 3) but also an upper side part is cast. Further, near the upper sides of the positive input terminal 131 and the negative input terminal 132, step portions 136 and 137 which are thickened in steps for reinforcement are formed, and the positive input terminal 131 and the negative input terminal 132 are firmly connected. To keep it. A recess 138 is formed in a part of the rear side of the terminal portion 111. The concave portion 138 has a shape in which a part of a synthetic resin molded product is cut off, and serves as a space where the interference rib 157 (see FIG. 4) is located when the battery pack 140 is mounted on the power tool main body 101. . By providing the concave portion 138, the 36V battery pack 140 can be mounted. On the other hand, the power tool main body 1 for 18V does not have a space for accommodating the interference rib 157 such as the concave portion 138 (see FIG. 2). Instead, a wall surface 38 is formed. However, since the protrusion such as the interference rib 157 does not exist on the battery pack 40 side, the presence of the recess 138 does not affect the mounting of the battery pack 40. Other shapes, especially the dimensions of the rails 126 and 128, particularly the length in the front-rear direction, the width in the left-right direction, and the height in the vertical direction are the same, and the distance between the rails 126 and the rails 128 is also low. 40 is the same as the distance between the rail 26 and the rail 28 of the power tool body 1 to which the power tool main body 1 can be mounted. Also, an LD terminal 133 for transmitting an abnormal signal is provided according to the same standard as the power tool main body 1, and a signal indicating occurrence of an abnormality such as over-discharge or over-temperature is transmitted from the battery pack 40 or the battery pack 140 to the power tool main body 101. Can be transmitted to The microcomputer of the arithmetic unit (not shown) included in the power tool main body 101 stops operation when receiving the abnormality occurrence signal via the LD terminal 133.
以上、本実施例によれば、従来の定格１８Ｖ用のレール機構を利用して３６Ｖ用の電池パック１４０を実現し、それに合わせた定格３６Ｖ用の電気機器本体を実現したので、３６Ｖ用の電気機器本体には、１８Ｖ用の電池パック４０を装着できるという互換性を実現することができた。特に、従来のようにレール部や端子スロット部の形状で構成した識別手段では対応しきれない多くの種類に対応できるよう、レール部や端子スロット部とは別の位置に識別手段を設けたことにより、電池パックと電気機器本体との間に適切な互換性を有する新たな電気機器システムを提供することができた。また、従来からある１８Ｖ用の電気機器本体には、新たな３６Ｖの電池パック１４０を物理的に装着できないように構成したので、誤装着によって低電圧電気機器を破損する虞もない。また、干渉リブ１５７を端子部（スロット１５１等が配置されている部分）よりも前方に設けたため、端子の配置領域を確保することができる。また、干渉リブ１５７を左右方向においてレール溝１４６、１４８の間（レール部間）に設けたため、干渉リブ１５７をレール部によって保護することができる。また、レール部に溝を設けないためレール部の強度を低下することもない。 As described above, according to the present embodiment, the 36V battery pack 140 is realized by using the conventional rail mechanism for the rated voltage of 18V, and the main body of the electrical equipment for the rated voltage of 36V is realized. Compatibility that an 18 V battery pack 40 can be mounted on the device body was realized. In particular, the identification means is provided at a position different from the rail and the terminal slot so as to be able to cope with many types that cannot be handled by the identification means configured in the shape of the rail and the terminal slot as in the related art. As a result, a new electrical equipment system having appropriate compatibility between the battery pack and the electrical equipment body can be provided. In addition, since a new 36 V battery pack 140 cannot be physically attached to a conventional 18 V electric device main body, there is no possibility that the low voltage electric device will be damaged due to erroneous mounting. Further, since the interference rib 157 is provided in front of the terminal portion (the portion where the slot 151 and the like are arranged), it is possible to secure an area where the terminal is arranged. Further, since the interference rib 157 is provided between the rail grooves 146 and 148 (between the rail portions) in the left-right direction, the interference rib 157 can be protected by the rail portion. Further, since no groove is provided in the rail portion, the strength of the rail portion does not decrease.
新たな３６Ｖの電池パック１４０を充電するには、専用の３６Ｖ用外部充電器（図示せず）を準備する必要がある。従来の１８Ｖ用の外部充電器は、１８Ｖの電動工具本体１と同様の電池パック装着部１０であって、電池パック１４０の干渉リブ１５７（図４参照）を受け入れないような構成であるため、電池パック１４０の装着が阻止される。従って、従来の１８Ｖ用の外部充電器に３６Ｖの電池パック１４０を差してしまうことによるトラブルを回避できる。尚、３６Ｖ用外部充電器は、１８Ｖの電池パック４０、１４．４Ｖの電池パック（図示せず）を充電できるように設計することも可能である。すなわち、干渉リブ１５７を受けいれるための凹部１３８に相当する凹部を充電器に設けておけば、１４．４Ｖ、１８Ｖ、３６Ｖの電池パックを機械的に接続することができる。その際に、電池パックの定格電圧等の種別を充電器側で識別することで、異なる定格電圧の複数の電池パックを充電可能な汎用充電器とすることができる。 To charge a new 36V battery pack 140, it is necessary to prepare a dedicated 36V external charger (not shown). The conventional 18 V external charger is the same battery pack mounting portion 10 as the 18 V electric tool main body 1, and is configured not to receive the interference rib 157 (see FIG. 4) of the battery pack 140. The attachment of the battery pack 140 is prevented. Therefore, it is possible to avoid trouble caused by inserting the 36V battery pack 140 into the conventional 18V external charger. The external charger for 36 V can be designed so that it can charge an 18 V battery pack 40 and a 14.4 V battery pack (not shown). That is, if a recess corresponding to the recess 138 for receiving the interference rib 157 is provided in the charger, the battery packs of 14.4 V, 18 V, and 36 V can be mechanically connected. At this time, by identifying the type such as the rated voltage of the battery pack on the charger side, a general-purpose charger capable of charging a plurality of battery packs having different rated voltages can be provided.
図６は本願発明の第二の実施例に係る電池パック１４０Ａの斜視図である。第一の実施例に係る電池パック１４０との違いは、電池パック１４０Ａでは干渉リブ１５７の代わりに、干渉リブ１５８を設けたことにある。干渉リブ１５８を設ける左右方向位置は、ＬＤ端子用スロット１５３と負極側スロット１５２の間であって、前後方向にみてレール溝１４６、１４８の前端位置から後方側に延びる平板状の突起である。干渉リブ１５８は、電池パック１４０Ａのケース１４１Ａと一体成形にて製造すると強度的に十分強くなるので好ましい。この干渉リブ１５８を形成したことによって、従来の１８Ｖ用の電動工具本体１には、３６Ｖの電池パック１４０Ａを装着することができないように構成できる。一方、新たな３６Ｖの電動工具本体１０１Ａには、干渉リブ１５８を避けるような空間を確保しておくことで、電池パック１４０Ａの装着が可能となる。 FIG. 6 is a perspective view of a battery pack 140A according to the second embodiment of the present invention. The difference from the battery pack 140 according to the first embodiment is that an interference rib 158 is provided instead of the interference rib 157 in the battery pack 140A. The left-right direction position where the interference rib 158 is provided is between the LD terminal slot 153 and the negative electrode side slot 152, and is a flat plate-like projection extending rearward from the front end position of the rail groove 146, 148 when viewed in the front-rear direction. It is preferable that the interference rib 158 be manufactured integrally with the case 141A of the battery pack 140A because the interference rib 158 has sufficiently high strength. By forming the interference rib 158, the 36V battery pack 140A cannot be mounted on the conventional 18V electric power tool main body 1. On the other hand, by securing a space to avoid the interference rib 158 in the new power tool main body 101A of 36V, the battery pack 140A can be mounted.
図７は図６の電池パック１４０Ａに対応する電動工具本体１０１Ａの下側から見た斜視図である。電動工具本体１０１Ａのターミナル部１１１Ａの形状は基本的に第一の実施例のターミナル部１１１とほぼ同等であるが、ターミナル部１１１に形成される凹部１３８の代わりに、ターミナル部１１１Ａは、垂直面１１３Ａが上下方向に小さく形成され、下端部分がカットされたような形状とされる。このため、矢印１１４ａ～１１４ｂに至る部分が干渉リブ１５８との接触を避ける空間となるため、３６Ｖ定格の電池パック１４０Ａが３６Ｖ定格の電動工具本体１０１Ａへの装着が可能となる。すなわち、干渉リブ１５８が垂直面１１３Ａの下側の収容空間（カット空間）に位置する。カット空間が第１の誤挿入防止部に相当する。一方、従来の１８Ｖ定格の電動工具本体１には、干渉リブ１５８の前壁１５８ａ（図６参照）が、垂直壁１１３に接触するために、電池パック１４０を装着することができない。尚、図４の干渉リブ１５７と図６の干渉リブ１５８の双方を同時に設けるように形成することも可能である。その場合は、図７で示すターミナル部１１１Ａに図５の凹部１３８と同様の凹部を形成すれば良い。この構成により第一の実施例と同様の効果を得ることができる。 FIG. 7 is a perspective view of the power tool main body 101A corresponding to the battery pack 140A of FIG. 6 as viewed from below. The shape of the terminal portion 111A of the power tool main body 101A is basically substantially the same as the terminal portion 111 of the first embodiment, but instead of the concave portion 138 formed in the terminal portion 111, the terminal portion 111A has a vertical surface. 113A is formed to be small in the vertical direction, and has a shape in which a lower end portion is cut. For this reason, the portion extending from the arrows 114a to 114b is a space that avoids contact with the interference rib 158, so that the 36V-rated battery pack 140A can be mounted on the 36V-rated power tool main body 101A. That is, the interference rib 158 is located in the housing space (cut space) below the vertical surface 113A. The cut space corresponds to a first erroneous insertion prevention part. On the other hand, since the front wall 158a (see FIG. 6) of the interference rib 158 contacts the vertical wall 113, the battery pack 140 cannot be mounted on the conventional power tool main body 1 rated at 18V. The interference rib 157 of FIG. 4 and the interference rib 158 of FIG. 6 can be formed at the same time. In this case, a recess similar to the recess 138 in FIG. 5 may be formed in the terminal portion 111A shown in FIG. With this configuration, the same effect as in the first embodiment can be obtained.
図８は本願発明の第三の実施例に係る電池パック１４０Ｂの斜視図である。第三の実施例に係る電池パック１４０Ｂでは、矢印１５５Ｂに示すスロット１５１Ｂの開口周囲に段差状の窪み（図４の窪み１５５に相当）が形成されないことにある。同様に、矢印１５６Ｂに示すスロット１５２Ｂの開口周囲にも段差状の窪み（図４の窪み１５６に相当）が形成されない。この結果、電池パック１４０Ｂを１８Ｖ定格の電動工具本体１に装着しようとすると、電動工具本体１に形成された段差部３６、３７（図２参照）が、電池パック１４０Ｂの上段面１４４Ｂと干渉してしまうので、電池パック１４０Ｂの正極側スロット１５１と負極側スロット１５２への正極入力端子１３１と負極入力端子１３２の挿入ができないことになる。この結果、高電圧の電池パック１４０Ｂが低電圧の電動工具本体１へ装着されることを阻止できる構成を実現できる。段差部３６、３７が第２の誤挿入防止部に相当する。 FIG. 8 is a perspective view of a battery pack 140B according to the third embodiment of the present invention. In the battery pack 140B according to the third embodiment, a step-shaped depression (corresponding to the depression 155 in FIG. 4) is not formed around the opening of the slot 151B indicated by the arrow 155B. Similarly, no step-shaped depression (corresponding to the depression 156 in FIG. 4) is formed around the opening of the slot 152B indicated by the arrow 156B. As a result, when the battery pack 140B is to be mounted on the power tool body 1 rated at 18V, the steps 36, 37 (see FIG. 2) formed on the power tool body 1 interfere with the upper surface 144B of the battery pack 140B. As a result, the positive input terminal 131 and the negative input terminal 132 cannot be inserted into the positive slot 151 and the negative slot 152 of the battery pack 140B. As a result, it is possible to realize a configuration that can prevent the high-voltage battery pack 140B from being mounted on the low-voltage power tool body 1. The steps 36 and 37 correspond to a second erroneous insertion prevention unit.
図９は電池パック１４０Ｂに対応する電動工具本体１０１Ｂの下側から見た斜視図である。矢印１３６Ｂ、１３７Ｂに示すように、正極入力端子１３１と負極入力端子１３２の上側付近には、図５、図７の電動工具本体１０１Ａ、１０１Ｂに形成されていた段差部１３６、１３７が形成されない。この構造によって、電池パック１４０Ｂは電動工具本体１０１Ｂに装着可能となる。第三の実施例では、ＬＤ端子１３３の近傍には段差部は設けられていないが、この構成は従来の電動工具本体１のＬＤ端子３３との形状と同様である。この構成によれば、電池パックに窪み１５５、１５６を形成しない簡単な構成で、端子の上辺段差部を有する定格電圧の低い電動工具本体への接続を禁止することができる。 FIG. 9 is a perspective view of the power tool main body 101B corresponding to the battery pack 140B as viewed from below. As shown by the arrows 136B and 137B, the steps 136 and 137 formed on the power tool main bodies 101A and 101B of FIGS. 5 and 7 are not formed near the upper side of the positive electrode input terminal 131 and the negative electrode input terminal 132. With this structure, the battery pack 140B can be mounted on the power tool main body 101B. In the third embodiment, no step is provided near the LD terminal 133, but this configuration is the same as the shape of the LD terminal 33 of the conventional power tool body 1. According to this configuration, with a simple configuration in which the depressions 155 and 156 are not formed in the battery pack, it is possible to prohibit connection to the power tool main body having the upper step portion of the terminal and having a low rated voltage.
図１０は本願発明の第四の実施例に係る電池パック１４０Ｃの斜視図である。第四の実施例も基本的原理は第一乃至第三の実施例と同様であって、電池パック１４０Ｃ側に突起部（干渉リブ）１５９を設け、電動工具本体１０１Ｃ側に突起部１５９の挿入を許容するための溝部１１６（図１１で後述）を設けた。ここで、突起部１５９は上段面１４４Ｃのいずれかの位置に設けられる。電池パック４０、１４０と同様、上段面１４４Ｃはレール溝１４６、１４８を形成するレール部の上面（レール溝１４６、１４８の右側側壁１４７及び左側側壁１４９の上端部分）を基準とすると、レール部の上面と同一の高さ又はその上面よりも高い位置に設けられている。すなわち、突起部１５９はレール部を基準にすると上段面１４４Ｃから上方に突出している。また、下段面１４２Ｃはレール溝１４６、１４８を形成するレール部の上面を基準とすると、レール部の上面よりも低い位置であってレール溝１４６、１４８の下面と略同一の高さ位置に設けられている。突起部１５９の前後方向に見た位置は、レール溝１４６、１４８の占める前後長の範囲内に設けると良い。また、左右方向に見た際には、左右のレール溝１４６、１４８に挟まれる範囲内、特に好ましくは正極側接続端子のスロット１５１と負極側接続端子のスロット１５３の間に設けられ、更に好ましくは電池パック１４０Ｃの左右方向にみて中央の位置に設けられる。突起部１５９の干渉によって電池パック１４０Ｃの電気機器本体１への装着が阻止される。また、突起部１５９は十分な強度が必要とされるので、突起部１５９を上段面１４４Ｃと一体成形で製造すると良い。突起部１５９の前後方向の長さ、左右方向の幅は任意に設定すれば良い。 FIG. 10 is a perspective view of a battery pack 140C according to the fourth embodiment of the present invention. The basic principle of the fourth embodiment is the same as that of the first to third embodiments. A protrusion (interference rib) 159 is provided on the battery pack 140C side, and the protrusion 159 is inserted on the power tool main body 101C side. A groove 116 (to be described later with reference to FIG. 11) is provided to allow the above. Here, the protrusion 159 is provided at any position of the upper step surface 144C. Similarly to the battery packs 40 and 140, the upper surface 144C is formed with respect to the upper surface of the rail portion forming the rail grooves 146 and 148 (the upper end portion of the right side wall 147 and the left side wall 149 of the rail groove 146 and 148). It is provided at the same height as the upper surface or at a position higher than the upper surface. That is, the projection 159 projects upward from the upper step surface 144C with reference to the rail. Further, the lower step surface 142C is provided at a position lower than the upper surface of the rail portion and substantially the same height as the lower surface of the rail groove 146, 148, with reference to the upper surface of the rail portion forming the rail groove 146, 148. Have been. The position of the protrusion 159 as viewed in the front-rear direction may be provided within the range of the front-rear length occupied by the rail grooves 146, 148. Further, when viewed in the left-right direction, it is provided in a range sandwiched by the left and right rail grooves 146 and 148, particularly preferably between the slot 151 of the positive connection terminal and the slot 153 of the negative connection terminal, and more preferably. Is provided at the center of the battery pack 140C in the left-right direction. The interference of the protrusion 159 prevents the battery pack 140C from being mounted on the electric device body 1. In addition, since the projection 159 needs sufficient strength, it is preferable to manufacture the projection 159 integrally with the upper step surface 144C. The length in the front-rear direction and the width in the left-right direction of the protrusion 159 may be set arbitrarily.
図１１は電池パック１４０Ｃに対応する電動工具本体１０１Ｃの下側から見た斜視図である。電動工具本体１０１Ｃの形状は、溝部１１６が形成される点を除いて第三の実施例の電動工具本体１０１Ｂと同じ形状である。溝部１１６は電池パック装着部１１０Ｃの下面の前端１１６ａから、中央付近の後端１１６ｂまで直線状に形成される。溝部１１６の長手方向は、レール１２６、１２８の延びる方向と平行になる。第四の実施例であっても、第一乃至第三の実施例と同様の効果を達成することができ、高電圧電池パックの低電圧電気機器本体への装着を確実に阻止することが可能となる。なお、電動工具本体１０１Ｃの溝部１１６以外を電動工具本体１０１Ｂと同じとしたが、電池パック１４０Ｃはスロット１５１、１５３の上部に段差状の窪み１５５、１５６を設けているため、ターミナル部１１１Ｃに段差部１３６、１３７を設けても良い。この構成により第一の実施例と同様の効果を得ることができる。 FIG. 11 is a perspective view of the power tool main body 101C corresponding to the battery pack 140C as viewed from below. The shape of the power tool main body 101C is the same as that of the power tool main body 101B of the third embodiment except that a groove 116 is formed. The groove 116 is formed linearly from the front end 116a on the lower surface of the battery pack mounting portion 110C to the rear end 116b near the center. The longitudinal direction of the groove 116 is parallel to the direction in which the rails 126 and 128 extend. Even in the fourth embodiment, the same effects as those of the first to third embodiments can be achieved, and the mounting of the high-voltage battery pack on the low-voltage electric device body can be reliably prevented. Becomes Although the power tool main body 101C is the same as the power tool main body 101B except for the groove 116, the battery pack 140C has stepped depressions 155 and 156 in the upper portions of the slots 151 and 153. Parts 136 and 137 may be provided. With this configuration, the same effect as in the first embodiment can be obtained.
以上、本発明を実施例に基づいて説明したが、本発明は上述の実施例に限定されるものではなく、その趣旨を逸脱しない範囲内で種々の変更が可能である。例えば、上述の例では、電池パックが装着される機器として電動工具の例で説明したが、電気機器の種類は電動工具に限定されず、電池パックを電源として稼動する機器であれば、どのような電気機器であっても良い。また、上述した第一から第四の実施例の誤装着阻止手段は、同時に複数組み合わせて高電圧電池パックに適用することも可能である。また、第一から第四の４つの誤装着阻止手段を用いて、更なる別の定格の高電圧電池パック、例えば、定格出力４８Ｖ、７２Ｖ等の高電圧電池パックを実現しても良い。また、上述の実施例では低出力又は高出力として低電圧又は高電圧の電池パックとして説明したが、出力として容量が異なる電池パックとしても良い。 As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described example, the example in which the power tool is used as the device to which the battery pack is attached has been described. However, the type of the electric device is not limited to the power tool. Electrical equipment may be used. Further, the erroneous mounting prevention means of the first to fourth embodiments described above can be applied to a high-voltage battery pack by combining a plurality of them at the same time. Further, using the first to fourth four incorrect mounting prevention means, a high-voltage battery pack having a further different rating, for example, a high-voltage battery pack having a rated output of 48 V or 72 V may be realized. Further, in the above-described embodiment, a low-voltage or high-voltage battery pack is described as a low output or a high output, but a battery pack having a different capacity as an output may be used.
１…電動工具本体、２…ハウジング、３…ハンドル部、４…トリガスイッチ、７…先端工具装着部、８…装着方向、１０…電池パック装着部、１１…ターミナル部、１２…水平面、１３…垂直面、２６，２８…レール溝、３１…正極入力端子、３２…負極入力端子、３３…ＬＤ端子、３８…壁面、４０…（低出力）電池パック、４１…ハウジング、４２…（第２）下段面、４３…段差部（第２接続面）、４４…（第２）上段面、４５…隆起部４６、４８…レール（第２レール部）、５１…正極側スロット、５２…負極側スロット、５３…ＬＤ端子用スロット、５５…ラッチボタン、５５ａ…ラッチ爪、１０１，１０１Ａ～１０１Ｃ…電動工具本体、１０４…トリガスイッチ、１０５…モータ、１１０…電池パック装着部、１１１，１１１Ａ，１１１Ｂ，１１１Ｃ…ターミナル部、１１２，１１２Ａ，１１２Ｂ，１１２Ｃ…水平面、１１３，１１３Ａ…垂直壁、１１６…溝部、１２５…ラッチボタン、１２５ａ…ラッチ爪、１２６，１２８…レール、１３１…正極入力端子、１３２…負極入力端子、１３３…ＬＤ端子、１３６，１３７…段差部、１３８…凹部、１４０…（高出力）電池パック、１４０Ａ～１４０Ｃ…電池パック、１４１Ａ…ケース、１４２…（第１）下段面、１４３…段差部（第１接続面）、１４４，１４４Ｂ，１４４Ｃ…（第１）上段面、１４５…隆起部、１４６，１４８…レール溝（第１レール部）、１４６ａ…前壁、１４６ｂ…切り欠き部、１４７，１４９…側壁、１５１…第１のスロット（正極端子用スロット）、１５２…第２のスロット（負極端子用スロット）、１５３…第３のスロット（ＬＤ端子用スロット）、１５５，１５６…窪み、１５７…干渉リブ、１５７ａ…前壁、１５８…干渉リブ、１５８ａ…前壁、１５９…突起部、１６１，１７１…正極出力端子、１６２，１７２…負極出力端子、１７２ａ…平板部、１７２ｂ…腕部、１７２ｃ…端子部、１８０，１９０…電池セル組 DESCRIPTION OF SYMBOLS 1 ... Power tool main body, 2 ... Housing, 3 ... Handle part, 4 ... Trigger switch, 7 ... Tip tool mounting part, 8 ... Mounting direction, 10 ... Battery pack mounting part, 11 ... Terminal part, 12 ... Horizontal plane, 13 ... Vertical surface, 26, 28 rail groove, 31 positive input terminal, 32 negative input terminal, 33 LD terminal, 38 wall surface, 40 (low output) battery pack, 41 housing, 42 (second) Lower step surface, 43: stepped portion (second connection surface), 44: (second) upper step surface, 45: raised portion 46, 48 ... rail (second rail portion), 51: positive electrode side slot, 52: negative electrode side slot 53, LD terminal slot, 55, latch button, 55a, latch claw, 101, 101A to 101C, power tool main body, 104, trigger switch, 105, motor, 110, battery pack mounting section, 111, 111A, 11B, 111C: terminal portion, 112, 112A, 112B, 112C: horizontal surface, 113, 113A: vertical wall, 116: groove portion, 125: latch button, 125a: latch claw, 126, 128: rail, 131: positive electrode input terminal 132 negative input terminal, 133 LD terminal, 136, 137 step portion, 138 concave portion, 140 (high output) battery pack, 140A to 140C battery pack, 141A case, 142 ... (first) lower surface , 143: stepped portion (first connection surface), 144, 144B, 144C (first) upper step surface, 145: raised portion, 146, 148: rail groove (first rail portion), 146a: front wall, 146b ... Notch, 147, 149 ... side wall, 151 ... first slot (slot for positive electrode terminal), 152 ... second slot (slot for negative electrode terminal) G), 153: third slot (LD terminal slot), 155, 156: recess, 157: interference rib, 157a: front wall, 158: interference rib, 158a: front wall, 159: protrusion, 161 and 171 ... Positive electrode output terminals, 162,172 ... Negative electrode output terminals, 172a ... Flat plate portion, 172b ... Arm portion, 172c ... Terminal portion, 180,190 ... Battery cell group

Claims (15)

  1. 前後方向に延びる一対の第１レール部と、前記一対の第１レール部の内側に形成される第１上段面と、前記第１上段面よりも前方で且つ下方に形成される第１下段面と、前記第１上段面及び前記第１下段面を接続し電気機器本体の端子が挿入されるスロットを有する第１接続面と、を備え、
    前記一対の第１レール部は前記第１接続面よりも前方に延びており、
    前記一対の第１レール部の内側において、前記第１下段面又は前記第１上段面から上方に突出する突出部を設けたことを特徴とする電池パック。     A pair of first rail portions extending in the front-rear direction, a first upper step surface formed inside the pair of first rail portions, and a first lower step surface formed forward and below the first upper step surface And a first connection surface that connects the first upper step surface and the first lower step surface and has a slot into which a terminal of the electric device body is inserted,
    The pair of first rail portions extend forward from the first connection surface,
    A battery pack provided with a protruding portion that protrudes upward from the first lower step surface or the first upper step surface inside the pair of first rail portions.
  2. 低出力電池パックと前記低出力電池パックより高い出力を有する高出力電池パックの双方を接続可能とした電気機器本体と、前記高出力電池パックと、を備えた電気機器であって、
    前記高出力電池パックは、前後方向に延びる一対の第１レール部と、前記一対の第１レール部の内側に形成される第１上段面と、前記第１上段面よりも前方で且つ下方に形成される第１下段面と、前記第１上段面及び前記第１下段面を接続し前記電気機器本体の端子が挿入されるスロットを有する第１接続面と、を有し、
    前記高出力電池パックは、前記一対の第１レール部の内側において前記第１下段面又は前記第１上段面から上方に突出する突出部を有し、
    前記電気機器本体には、前記突出部の挿入を許容する窪み部が形成されることを特徴とする電気機器。     An electric device including an electric device body capable of connecting both a low-output battery pack and a high-output battery pack having a higher output than the low-output battery pack, and the high-output battery pack,
    The high-output battery pack includes a pair of first rails extending in the front-rear direction, a first upper surface formed inside the pair of first rails, and a front and lower part than the first upper surface. A first lower surface formed and a first connection surface having a slot for connecting the first upper surface and the first lower surface and having a terminal of the electric device body inserted therein;
    The high-output battery pack has a protruding portion that protrudes upward from the first lower step surface or the first upper step surface inside the pair of first rail portions,
    The electric device according to claim 1, wherein the electric device main body is formed with a concave portion that allows the insertion of the protruding portion.
  3. 低出力電池パックと、前記低出力電池パックより高い出力を有する高出力電池パックと、前記低出力電池パックと前記高出力電池パックの双方を接続可能な電気機器本体と、を備えた電気機器システムであって、
    前記高出力電池パックは、前後方向に延びる一対の第１レール部と、前記一対の第１レール部の内側に形成される第１上段面と、前記第１上段面よりも前方で且つ下方に形成される第１下段面と、前記第１上段面及び前記第１下段面を接続し前記電気機器本体の端子が挿入されるスロットを有する第１接続面と、を有し、
    前記低出力電池パックは、前後方向に延びる一対の第２レール部と、前記一対の第２レール部の内側に形成される第２上段面と、前記第２上段面よりも前方で且つ下方に形成される第２下段面と、前記第２上段面及び前記第２下段面を接続し前記電気機器本体の端子が挿入されるスロットを有する第２接続面と、を有し、
    前記高出力電池パックは、前記一対の第１レール部の内側において、前記第１上段面又は前記第１下段面から上方に突出する突出部を有し、
    前記電気機器本体は、前記突出部の挿入を許容する窪み部を有することを特徴とする電気機器システム。     An electric device system comprising: a low-output battery pack; a high-output battery pack having a higher output than the low-output battery pack; and an electric device body to which both the low-output battery pack and the high-output battery pack can be connected. And
    The high-output battery pack includes a pair of first rails extending in the front-rear direction, a first upper surface formed inside the pair of first rails, and a front and lower part than the first upper surface. A first lower surface formed and a first connection surface having a slot for connecting the first upper surface and the first lower surface and having a terminal of the electric device body inserted therein;
    The low-output battery pack includes a pair of second rails extending in the front-rear direction, a second upper surface formed inside the pair of second rails, and a lower front and a lower front than the second upper surface. A second lower surface formed and a second connection surface having a slot for connecting the second upper surface and the second lower surface and having a terminal of the electric device body inserted therein;
    The high-output battery pack has a protruding portion that protrudes upward from the first upper step surface or the first lower step surface inside the pair of first rail portions,
    The electric device system according to claim 1, wherein the electric device main body has a concave portion that allows insertion of the protruding portion.
  4. 前記一対の第１レール部の一方のレールの内側に隣接して設けられた第１のスロットを有し、前記突出部は前記第１のスロットより内側の位置に設けられることを特徴とする請求項１から３のいずれか一項に記載の電池パック、電気機器又は電気機器システム。 It has a 1st slot provided adjacent to the inside of one rail of a pair of said 1st rail parts, and the above-mentioned projection part is provided in a position inside the 1st slot. Item 4. The battery pack, the electric device, or the electric device system according to any one of Items 1 to 3.
  5. 前記第１上段面は、前記第１レール部の上面と略同一又は前記上面よりも高い位置に設定されていることを特徴とする請求項１から４のいずれか一項に記載の電池パック、電気機器又は電気機器システム。 5. The battery pack according to claim 1, wherein the first upper surface is set to be substantially the same as an upper surface of the first rail portion or a position higher than the upper surface. 6. Electrical equipment or electrical equipment system.
  6. 前記突出部は、前記一対の第１レール部の内側において、前記一対の第１レール部の前端よりも後方で前記第１接続面よりも前側に位置する前記第１下段面の上面に設けられている、又は、前記第１接続面よりも後側に位置する前記第１上段面の上面に設けられていることを特徴とする請求項１から５のいずれか一項に記載の電池パック、電気機器又は電気機器システム。 The protruding portion is provided on an upper surface of the first lower step surface located behind the front ends of the pair of first rail portions and forward of the first connection surface inside the pair of first rail portions. The battery pack according to any one of claims 1 to 5, wherein the battery pack is provided on an upper surface of the first upper surface located rearward of the first connection surface. Electrical equipment or electrical equipment system.
  7. 前記電池パック又は高出力電池パックより低出力の低出力電池パックを接続可能な低出力電気機器本体を有し、
    前記突出部が前記低出力電気機器本体に当接することによって、前記電池パック又は前記高出力電池パックの前記低出力電気機器本体への接続を禁止するように構成されていることを特徴とする請求項１から６のいずれか一項に記載の電池パック、電気機器又は電気機器システム。     The battery pack has a low-output electric device main body capable of connecting a low-output battery pack having a lower output than the high-output battery pack,
    The projecting portion is configured to prohibit connection of the battery pack or the high-output battery pack to the low-output electric device main body by contacting the low-output electric device main body. Item 7. The battery pack, the electric device, or the electric device system according to any one of Items 1 to 6.
  8. 定格電圧ｎ（ｎ≧３６）ボルトの第１の電気機器本体と、前記第１の電気機器本体に装着可能な定格電圧ｎボルトの第１の電池パックと、前記第１の電気機器本体に装着可能な定格電圧ｎ／２ボルト以下の第２の電池パックと、を有し、前記第１の電池パックは、第１のレール部と第１のラッチを有し、
    前記第２の電池パックは、第２のレール部と第２のラッチを有し、
    前記第１及び第２のレール部の幅及び長さを同じとし、前記第１及び第２のラッチの爪の位置を同じとしたことを特徴とする電気機器システム。     A first electrical equipment main body having a rated voltage of n (n ≧ 36) volts, a first battery pack having a rated voltage of n volts attachable to the first electrical equipment main body, and being mounted on the first electrical equipment main body A second battery pack having a rated voltage of n / 2 volts or less, wherein the first battery pack has a first rail portion and a first latch;
    The second battery pack has a second rail portion and a second latch,
    An electrical equipment system, wherein the width and length of the first and second rails are the same, and the positions of the claws of the first and second latches are the same.
  9. 前記電気機器システムは、定格電圧ｎ／２ボルト以下の第２の電気機器本体を有し、
    前記第２の電気機器本体には、前記第１の電池パックが装着不可であり、前記第２の電池パックは装着可能であることを特徴とする請求項８に記載の電気機器システム。     The electric equipment system has a second electric equipment main body having a rated voltage of n / 2 volts or less,
    The electric equipment system according to claim 8, wherein the first battery pack cannot be mounted on the second electric equipment main body, and the second battery pack can be mounted.
  10. 前記第１の電気機器本体は、第１の誤挿入防止部を有し、前記第２の電気機器本体は、第２の誤挿入防止部を有し、
    前記第１の誤挿入防止部は、前記第１の電池パック及び前記第２の電池パックの接続を許容し、
    前記第２の誤挿入防止部は、前記第１の電池パックの接続を禁止し、前記第２の電池パックの接続を許容するように構成されることを特徴とする請求項９に記載の電気機器システム。     The first electric device main body has a first erroneous insertion prevention portion, and the second electric device main body has a second erroneous insertion prevention portion,
    The first erroneous insertion prevention unit allows connection of the first battery pack and the second battery pack,
    10. The electric device according to claim 9, wherein the second erroneous insertion prevention unit is configured to prohibit connection of the first battery pack and allow connection of the second battery pack. Equipment system.
  11. 前記第１の電池パックは、前記第２の電池パックよりも外側に突出する突出部を有し、
    前記突出部と前記第２の誤挿入防止部によって前記第１の電池パックの前記第２の電気機器本体への接続を禁止するように構成したことを特徴とする請求項１０に記載の電気機器システム。     The first battery pack has a protruding portion that protrudes outside the second battery pack,
    The electric device according to claim 10, wherein connection of the first battery pack to the second electric device main body is prohibited by the projecting portion and the second erroneous insertion preventing portion. system.
  12. 前記第１の電池パックは、前記第１のレール部の内側の領域に第１の端子部を有し、
    前記第１のレール部は、前記第１の端子部よりも前方に延びており、
    前記突出部は、前記第１のレール部の内側において、前記第１の端子部よりも前方又は上方に突出して設けられることを特徴とする請求項１１に記載の電気機器システム。     The first battery pack has a first terminal portion in a region inside the first rail portion,
    The first rail portion extends forward from the first terminal portion,
    The electric equipment system according to claim 11, wherein the protruding portion is provided inside the first rail portion so as to protrude forward or upward from the first terminal portion.
  13. 前記第１の電池パックは、
    下段面と上段面と、これらの面を接続する接続面と、
    前記接続面から前記上段面にかけて形成され、前記第１の端子部への入口となるスロットと、を有し、
    前記突出部は、前記スロットの開口端面よりも前方側であって前記接続面よりも前方に向けて凸状に突出するように形成されることを特徴とする請求項１２に記載の電気機器システム。     The first battery pack includes:
    A lower surface, an upper surface, and a connection surface connecting these surfaces,
    A slot formed from the connection surface to the upper surface and serving as an entrance to the first terminal portion;
    13. The electric device system according to claim 12, wherein the protruding portion is formed so as to protrude forward from an opening end surface of the slot and forward from the connection surface. .
  14. 前記第１の電池パックは、
    下段面と上段面と、これらの面を接続する接続面と、
    前記接続面から前記上段面にかけて形成され、前記第１の端子部への入口となるスロットと、を有し、
    前記第２の電池パックは、
    下段面と上段面と、これらの面を接続する接続面と、
    前記接続面から前記上段面にかけて形成され、前記第１の端子部への入口となるスロットと、
    前記スロットの上側外縁の周囲を囲むように形成された段差状の窪み部と、を有し、
    前記第２の誤挿入防止部は、前記第２の電気機器本体の端子の上部を保持するよう肉厚に形成された段差部からなり、
    前記段差部が前記第２の電池パックの前記窪み部に挿入されることで前記第２の電池パックと前記第２の電気機器本体との接続を許容し、
    前記段差部が前記第１の電池パックの前記接続面に当接することで前記第１の電池パックと前記第１の電気機器本体との接続を禁止するように構成したことを特徴とする請求項１２に記載の電気機器システム。     The first battery pack includes:
    A lower surface, an upper surface, and a connection surface connecting these surfaces,
    A slot formed from the connection surface to the upper surface and serving as an entrance to the first terminal portion;
    The second battery pack includes:
    A lower surface, an upper surface, and a connection surface connecting these surfaces,
    A slot formed from the connection surface to the upper surface and serving as an entrance to the first terminal portion;
    A step-shaped recess formed so as to surround the periphery of the upper outer edge of the slot,
    The second erroneous insertion prevention part includes a step part formed to be thick so as to hold an upper part of a terminal of the second electric device main body,
    The step portion is inserted into the recessed portion of the second battery pack to allow connection between the second battery pack and the second electric device main body,
    The structure according to claim 1, wherein the step portion contacts the connection surface of the first battery pack to prohibit connection between the first battery pack and the first electric device main body. 13. The electric device system according to item 12.
  15. 前記第１の電池パックは、
    下段面と上段面と、これらの面を接続する接続面と、
    前記接続面から前記上段面にかけて形成され、前記第１の端子部への入口となるスロットと、
    前記上段面から上方に突出する凸部と、を有し、
    前記凸部と前記第２の誤挿入防止部によって前記第１の電池パックの前記第２の電気機器本体への接続を禁止するように構成したことを特徴とする請求項１２に記載の電気機器システム。     The first battery pack includes:
    A lower surface, an upper surface, and a connection surface connecting these surfaces,
    A slot formed from the connection surface to the upper surface and serving as an entrance to the first terminal portion;
    A convex portion protruding upward from the upper step surface,
    13. The electric device according to claim 12, wherein connection of the first battery pack to the second electric device main body is prohibited by the protrusion and the second erroneous insertion prevention portion. system.
PCT/JP2019/037002 2018-09-28 2019-09-20 Battery pack, electrical device, and electrical device system WO2020066905A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114914608A (en) * 2021-02-10 2022-08-16 苏州宝时得电动工具有限公司 Battery pack, external device, and electrical assembly
US12107449B2 (en) 2020-12-07 2024-10-01 Makita Corporation Electrical-device system and detachable DC power source

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2012049074A (en) * 2010-08-30 2012-03-08 Makita Corp Battery pack of electric tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012049074A (en) * 2010-08-30 2012-03-08 Makita Corp Battery pack of electric tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12107449B2 (en) 2020-12-07 2024-10-01 Makita Corporation Electrical-device system and detachable DC power source
CN114914608A (en) * 2021-02-10 2022-08-16 苏州宝时得电动工具有限公司 Battery pack, external device, and electrical assembly

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