CN102909706A

CN102909706A - Holder for housing working heads and power tool using same

Info

Publication number: CN102909706A
Application number: CN2012102339482A
Authority: CN
Inventors: 王家达; 保罗·安德罗; 张士松; 钟红风; 庞晓丽; 徐静涛
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2011-08-06
Filing date: 2012-07-06
Publication date: 2013-02-06
Also published as: CN102909704A; CN202943609U; CN102909705A; CN202862164U

Abstract

The invention relates to a holder for housing working heads. The holder comprises a body provided with a rotation axis, wherein the body is provided with a plurality of housing bins for housing working heads; the housing bins are parallel to the rotation axis and are uniformly arranged around the rotation axis; the body is provided with a peripheral wall surrounding the housing bins; the peripheral wall is provided with identification devices for indicating different working heads; and the identification devices correspond to the housing bins. The invention also relates to a power tool using the holder. The holder and the power tool have the following beneficial effects: the types of the working heads installed in the corresponding housing bins can be quickly identified via the identification devices, thus being convenient for operators to use the working heads; and the holder is installed on the power tool and different working heads can be quickly selected when changed, thus the working efficiency is high.

Description

Storage clamp for accommodating working head and power tool using same

Technical Field

The invention relates to a storage clamp for accommodating a working head.

The invention also relates to a power tool using the storage clamp, in particular to a power tool such as an electric drill and an electric screwdriver capable of realizing quick replacement of a working head.

Background

A power drill is a power tool for drilling a hole in a workpiece, and a power screwdriver is a power tool for tightening a screw to a workpiece. When holes with different diameters need to be drilled or screws with different specifications need to be screwed down in the using process, drill bits or screwdriver bits with different specifications need to be replaced, namely the working heads need to be taken down and then the working heads with the other specifications need to be installed. In the use occasion that the working head needs to be replaced frequently, great inconvenience is brought to an operator, on one hand, the working head is troublesome to replace, and on the other hand, the taken-off working head is easy to lose everywhere. Therefore, it is conceivable to store a plurality of working heads in the storage clamp, then to place the storage clamp in the power tool, to push out the working heads by the operating mechanism for working, to pull back the working heads into the storage clamp by the operating mechanism when the working heads need to be replaced, and to adjust the position of the storage clamp to select the desired working head.

In general, an operator cannot see the specific shape of the working head accommodated in the storage clip from outside the housing, and in order to find a desired working head, the operator needs to push out or pull back the working head several times through the operating mechanism, which is troublesome, and thus the working efficiency is low.

Disclosure of Invention

In view of the shortcomings of the prior art, the invention aims to provide a storage clamp which is easy to distinguish the position of a working head.

Another object of the present invention is to provide a power tool which is simple to operate and efficient.

The technical scheme adopted by the invention for solving the technical problems is as follows: the storage clamp comprises a main body, wherein the main body is provided with a rotating axis, the main body is provided with a plurality of accommodating bins for accommodating working heads, the accommodating bins are parallel to the rotating axis and are uniformly arranged around the rotating axis, the main body is provided with an outer peripheral wall surrounding the accommodating bins, identification devices representing different working heads are arranged on the outer peripheral wall, and the identification devices correspond to the accommodating bins in position.

Preferably, the identification means comprises words, symbols or figures or a combination thereof representing different shapes of the working head.

Preferably, the identification means comprises characters, symbols or figures or a combination thereof representing different models of working heads.

Preferably, the identification means is fixed to the peripheral wall of the body by one of printing, molding, embedding and adhering.

Preferably, the peripheral wall of the main body is provided with a plurality of projections or grooves parallel to the axial direction of the main body.

Preferably, the identification means is located at one end of the peripheral wall axially with respect to the body, and the projection or recess is located at the other end of the peripheral wall axially with respect to the body.

Preferably, the identification means is removably mounted to the peripheral wall of the body.

Preferably, the end face of the main body is provided with a plurality of positioning grooves corresponding to the plurality of accommodating bins.

Preferably, any one of the plurality of positioning grooves communicates with the outer circumferential wall of the main body in a radial direction of the main body.

The other technical scheme adopted by the invention for solving the technical problem is as follows: a power tool, comprising: a housing; a motor disposed in the housing and outputting rotational power; the output shaft is provided with an accommodating hole which is axially arranged and used for accommodating the working head; the transmission mechanism is arranged between the motor and the output shaft and can transmit the rotary power output by the motor to the output shaft; the connecting shaft is arranged in the machine shell and can operate to enable the working head to be located at a working position in the accommodating hole; the power tool also comprises the storage clamp, and the connecting shaft can be operated to enable the working head to be located in the containing position in the storage clamp.

Compared with the prior art, the invention has the beneficial effects that: the storage clamp can quickly identify the type of the working head arranged in the corresponding storage bin through the identification device, and is convenient for an operator to use.

Drawings

Fig. 1 is a sectional view of a power tool in an operating state in a preferred embodiment of the present invention.

Fig. 2 is a partially exploded perspective view of the power tool of fig. 1.

Fig. 3 is a cross-sectional view of the power tool of fig. 1 in a state of changing the working head.

Fig. 4 is a perspective view of a first embodiment of a preferred storage clip of the present invention.

Fig. 5 is a front view of the storage clip of fig. 4.

Fig. 6 is a sectional view taken along line E-E in fig. 4.

Fig. 7 is a schematic view of one form of construction of the identification means in a second embodiment of the preferred storage clip of the present invention.

Fig. 8 is a schematic view of another configuration of an identification device of a second embodiment of a preferred storage clip of the present invention.

Fig. 9 is a schematic view of a transparent construction of a storage clip according to a third embodiment of the preferred storage clip of the present invention.

Fig. 10 is a schematic view of another transparent construction of a storage clip according to a third embodiment of the preferred storage clip of the present invention.

Wherein,

1. casing 2, motor 3, transmission mechanism

4. Output shaft 6, battery 7, button switch

9. Working head 11, handle 13 and front shell

15. Guide groove 21, motor shaft 22, gear box

30. Pinion gear mechanism 31, planetary gear reduction mechanism 40, sleeve

41. Through hole 50, fixed block 51, connecting shaft

52. Storage clip 53, sliding cover 54, positioning piece

131. Opening 133, opening 134, radial through hole

221. Partition 223, gearbox cover 225, arch

301. First gear 302, second gear 303, third gear

511. Magnet 521, accommodating bin 522, viewing window

523. Identification device 524, transparent ring 528, locating slot

531. Guide rail

Detailed Description

In the preferred embodiment of the power tool of the present invention, the power tool is a power screwdriver, which can be classified into a pneumatic screwdriver, a hydraulic screwdriver and an electric screwdriver according to the power source, and the electric screwdriver also has a dc component and an ac component.

Referring to fig. 1 to 3, the dc electric screwdriver includes a housing 1, a motor 2, a battery 6, a transmission mechanism 3, a connecting shaft 51, a working head support mechanism, and an output shaft 4. The casing 1 is assembled by folding two half shells which are symmetrical left and right by screws (not shown), and has a horizontal part and a handle 11 part which forms an obtuse angle with the horizontal part, and the preferred angle of the invention is between 100 degrees and 130 degrees, so that the handle 11 can be held comfortably during operation. The upper part of the handle 11 is provided with a button switch 7, the battery 6 is fixed at the rear part of the handle 11, and the transmission mechanism 3 is partially and fixedly accommodated in the horizontal part of the machine shell 1. As a preferred embodiment, the battery 6 may be a lithium ion battery. It should be noted that the lithium ion battery referred to herein is a generic term of a rechargeable battery in which a negative electrode material is a lithium element, and may be constructed in many systems, such as a "lithium manganese" battery, a "lithium iron" battery, and the like, depending on a positive electrode material. In the present embodiment, the lithium ion battery is a lithium ion battery having a rated voltage of 3.6V (volts). Of course, the battery 6 may also be of a nickel cadmium, nickel hydrogen, or the like, of a type well known to those skilled in the art.

The transmission mechanism 3 includes, from back to front (rear on the right side of the drawing), a planetary gear reduction mechanism 31 driven by the motor 2 and a pinion mechanism 30, wherein the pinion mechanism 30 is connected to a connecting shaft 51, and transmits the rotational motion of the motor 2 to the output shaft 4 through the connecting shaft 51. The working head supporting mechanism is used for storing different working heads, the working heads mainly refer to cross screwdriver heads, straight screwdriver heads, drill heads and the like commonly used by the electric screwdriver, and different working heads can be quickly replaced when the electric screwdriver screws or loosens different screws by operating the connecting shaft to axially move through the working head supporting mechanism or leave the working head supporting mechanism. According to the above composition of the electric screwdriver, the electric screwdriver can be divided into a motor part D provided with a motor, a transmission part C provided with the transmission mechanism 3, a storage part B provided with the working head support mechanism and an output part a provided with an output shaft in sequence from back to front (with the right side of the drawing as the back).

The motor in the preferred embodiment of the present invention is an electric motor 2, and the electric motor 2 has a motor shaft 21 extending forwardly from the motor housing. The motor 2 is fixed in the machine shell 1, a gear box 22 is fixed in the machine shell 1 and positioned at the front part of the motor 2, the gear box 22 is used for accommodating the planetary gear speed reducing mechanism 31 and the pinion mechanism 30, the planetary gear speed reducing mechanism 31 and the pinion mechanism 30 are separated by arranging a separating plate 221 between the planetary gear speed reducing mechanism 31 and the pinion mechanism 30, and a gear box cover plate 223 is arranged between the gear box 22 and the working head supporting mechanism, so that the transmission mechanism 3 and the working head supporting mechanism can be separated, namely, the transmission mechanism 3 and the working head supporting mechanism are independent. The pinion mechanism 30 includes a first gear 301 connected to the planetary gear reduction mechanism 31 so as to be capable of transmitting torque, a third gear 303 connected to the connecting shaft 51, and a second gear 302 meshing with the first gear 301 and the third gear 303, the second gear 302 transmitting the rotation of the first gear 301 to the third gear 303, both ends of each gear being supported by bushings. The middle part of the partition 221 is provided with a hole for the shaft of the first gear 301 to pass through, the end face of the partition 221 is provided with a groove for mounting a shaft sleeve, a rear shaft sleeve for supporting the pinion mechanism 30 is fixed on the partition 221, a front shaft sleeve is fixed on a gear box cover plate 223, and the gear box cover plate 223 is fixedly connected with the gear box 22 through screws, buckles and the like, so that the pinion mechanism 30 and the planetary gear speed reducing mechanism 31 can be separated and can be sealed at the same time, dust, powder and the like are prevented from entering the transmission mechanism 3, and the leakage of lubricating oil can also be prevented. In addition, the three gears are provided only to make the inner space of the tool more compact so as not to affect the external beauty. Of course, two gears may be provided as necessary, one being connected to the planetary gear speed reduction mechanism 31 and the other being connected to the connecting shaft 51. In addition, the transmission mechanism 3 is not limited to the above-described form, and the transmission mechanism 3 may include only the planetary gear speed reduction mechanism 31, or only the pinion gear mechanism 30, or other rotational motion transmission mechanisms such as a ratchet mechanism, a worm gear mechanism, and the like. The planetary gear reduction mechanism 31 has a three-stage reduction system, the motor shaft 21 extends to be meshed with the planetary gear reduction mechanism 31, the planetary gear reduction mechanism 31 transmits the rotation motion to the pinion mechanism 30, the pinion mechanism 30 drives the connecting shaft 51 to rotate, and the connecting shaft 51 drives the output shaft to rotate. When the motor 2 is operated, the output shaft 4 finally outputs the motor through the planetary gear reduction mechanism 31 and the pinion mechanism 30. It can be seen that the drive train in this embodiment is a motor-transmission-connecting shaft-output shaft, i.e. the connecting shaft is part of the drive train. In addition, the speed reducing mechanism is composed of a three-stage planetary speed reducing system and a two-stage parallel shaft speed reducing system to obtain the desired output speed, and in other embodiments, the speed reducing mechanism may only include a two-stage planetary speed reducing system or other speed reducing systems according to the required output speed.

The casing 1 is slidably connected with a sliding cover 53, and the sliding cover 53 can drive the connecting shaft 51 to move axially. The edge of the sliding cover 53 is provided with a guide track 531, and correspondingly, the housing 1 is provided with a guide groove 15, and the sliding cover 53 is installed in the guide groove 15 through the guide track 531 and can slide axially relative to the housing 1. Of course, the sliding cover 53 may be provided with a guide groove, and the sliding cover may be moved by providing a guide rail on the housing 1.

The connecting shaft 51 is a hexagonal shaft, a fixing block 50 is axially and fixedly arranged on the connecting shaft 51, the rear end of the connecting shaft 51 can rotatably abut against the fixing block 50, and the sliding cover 53 can drive the connecting shaft 51 to move in a mode of being connected with the fixing block 50. Of course, there are many ways for the sliding cover 53 to drive the connecting shaft 51 to move, for example, a ring groove surrounding the periphery of the connecting shaft 51 may be provided on the connecting shaft 51, and the sliding cover 53 extends into the ring groove through a pin or a wire ring to connect with the connecting shaft 51, so that the rotation of the connecting shaft 51 is not affected, and the sliding cover 53 drives the connecting shaft 51 to move is also not affected. The front end of the connecting shaft 51 is provided with a magnet 511 for attracting the working head 9, when the working head 9 is selected, the sliding cover 53 can be operated to drive the connecting shaft 51 to pass through the working head supporting mechanism, the working head 9 is attracted by the magnet 511 on the connecting shaft 51, and leaves the working head supporting mechanism under the pushing of the connecting shaft 51 to enter the output shaft 4. When the working head works, the connecting shaft 51 drives the output shaft 4 to rotate, and the output shaft 4 drives the working head 9 to rotate.

The section of the handle part of the common standard working head is in a regular hexagon shape, namely the handle part forms a torque stress part of the working head, the output shaft 4 is provided with an axially penetrating accommodating hole 41, the accommodating hole 41 is arranged in a hexagonal hole form matched with the torque stress part of the working head, and the working head is arranged in the accommodating hole to enable the working head to be in a working position, so that the torque transmission is realized. Of course, the working head may be non-standard, that is, the cross section of the torque receiving portion is polygonal, and the corresponding receiving hole 41 is set to be polygonal matching with the torque receiving portion, so as to achieve torque transmission. The output shaft 4 is supported in the axial opening 131 of the front housing 13 by a bushing 40. the bushing 40 provides radial support for the output shaft 4, although radial support of the output shaft 4 may be provided by bearings. The third gear 303 of the present invention is provided with a hexagonal hole therein for being coupled with the connecting shaft 51 and transmitting the rotating power to the connecting shaft 51, so that the connecting shaft 51 is inserted into the output shaft 4 to drive the output shaft 4 to rotate, and further the output shaft 4 drives the working head 9 to rotate, so that the standard working head 9 can be used, and the connecting shaft 51 does not need to be provided with a hole for accommodating the working head 9, thereby avoiding the excessive diameter of the connecting shaft 51 from increasing the weight and volume of the whole machine. Therefore, the working head 9 is directly driven to rotate to form an output shaft, the torque transmission distance is shortened, and the tool is more reliable to use. However, it is easy for those skilled in the art to substitute other transmission methods, for example, the connecting shaft directly drives the working head to rotate, that is, the connecting shaft is directly connected to the working head in a manner of transmitting torque, or the output shaft is directly driven by a gear, and the connecting shaft is only used for pushing out the working head and driving the working head to return to the storage clip.

The housing 1 includes a front case 13 connected to a front end thereof, and a part of the working head support mechanism is housed in the front case 13 and the other part is covered by the slide cover 53 and exposed as the slide cover 53 moves. The preferred work head support mechanism of the present invention is a cylindrical storage clamp 52, which is convenient to rotate and occupies a small space, but can be square, triangular, strip-shaped, bracket-shaped, etc. When the electric screwdriver is operated, the sliding cover 53 abuts against the front housing 13, so that the storage clip 52 and the connecting shaft 51 can be closed. The gear box cover plate 223 is provided with a hole for the connecting shaft 51 to pass through, the gear box 22 extends around the axis of the connecting shaft 51 to form an arch 225, the arch 225 can be integrally or separately arranged with the gear box 22, the connecting shaft 51 can be partially sealed by the arrangement of the arch 225, when the working head 9 of the electric screwdriver is replaced, namely the sliding cover 53 moves to the rearmost position, the connecting shaft 51 cannot be exposed, and therefore dust, powder and the like can be prevented from entering the tool. Furthermore, the gearbox cover 223 extends to the end face of the arch 225, so that the transmission 3 is closed together in its entirety in the axial direction. In the working process, the sliding cover 53 can seal the storage clip 52, so that dust is prevented from entering, when the working head needs to be replaced, the sliding cover 53 is removed to expose the storage clip 52, different working heads are convenient to select, and thus the sliding cover 53 needs to have a certain length, when the sliding cover 53 moves to the working position abutted against the front shell 13, the sliding cover 53 is axially overlapped with the storage part B and the transmission part C, and when the sliding cover 53 moves to the position where the working head can be replaced, the sliding cover 53 is axially overlapped with the motor part D and is partially axially overlapped with the transmission part C. Of course, there are many ways to move the sliding cover 53, for example, the sliding cover 53 can be rotatably installed on the housing 1, and can rotate between two positions for covering the storage clip 52 and exposing the storage clip 52; or may be opened or closed in a manner similar to a sliding door; or pivotally connected to the housing 1, etc., to close the storage clamp 52 during operation and expose the storage clamp 52 when the working head needs to be replaced.

The upper part of the front shell 13 is provided with an opening part 133, the bottom of the front shell 13 is provided with a radial opening 134 which is opposite to the opening part 133 in the radial direction, the sliding cover 53 is operated to move towards the direction of the motor 2, the connecting shaft 51 moves to a position separated from the storage clamp 52 along with the sliding cover 53, so that the storage clamp 52 can be ejected out of the opening part 133 and removed by directly extending fingers into the radial opening 134, and then another storage clamp provided with a different working head is installed into the machine shell from the opening part 133 for use.

In a preferred embodiment of the storage clip of the present invention, the storage clip 52 has a main body which may be cylindrical or polygonal in cross-section and has a rotation axis X, the storage clip 52 is rotatably supported between the gear case cover plate 223 and the front case 13, and the main body is provided with a through hole 525 concentric with the rotation axis such that the storage clip 52 can be rotatably supported through the through hole 525 (e.g., a resilient positioning member capable of protruding into the through hole 525 may be provided on the case). The plurality of accommodating bins 521 for accommodating the working heads are uniformly arranged around the rotation axis X of the main body, and the accommodating bins 521 are parallel to the rotation axis X of the main body. The preferred storage bins 521 are provided with six storage bins 521, which are uniformly distributed around the rotation axis X of the main body, and the longitudinal direction of the working heads 9 when the storage bins 521 are stored is parallel to the rotation axis of the storage clip 52. Of course, 4, 5 or more storage bins may be provided, and no matter how many storage bins are provided, the diameter of the circumscribed circle of the storage clip is smaller than the maximum radial dimension of the gear box 22, preferably, the diameter of the storage clip 52 is smaller than or equal to 5 cm, so that the whole power tool is small and compact and is convenient to carry. The peripheral wall of the main body is provided with a plurality of projections or grooves parallel to the axial direction of the main body, so that when the storage clip 52 is placed in the electric screwdriver, friction can be increased by manually operating and rotating the storage clip 52 by an operator, and the storage clip 52 can be easily stirred and rotated.

In order to make the storage clip 52 easy to be positioned when rotating, it is preferable to provide positioning slots 528 on the end surface of the storage clip 52 adjacent to the transmission mechanism 3, the number and positions of the positioning slots 528 correspond to those of the accommodating bin 521, and the housing 1 is provided with an elastic positioning member 54 engaged with the positioning slots 528, where the elastic positioning member 54 may be a spring, a steel ball or a steel cap acted by an elastic force, and other structures known by those skilled in the art, so that when rotating the storage clip 52, a sound prompt can be heard, and at the same time, accurate positioning can be achieved. The elastic positioning element 54 is disposed at the bottom of the casing 1 and at a position radially opposite to the opening 133, the positioning groove 528 is located on the end surface of the storage clip 52 and is communicated with the circumferential surface of the storage clip 52, or one end of the positioning groove 528 along the radial direction of the storage clip 52 penetrates through the circumferential surface of the storage clip 52, so that when the storage clip 52 is taken out from the casing 1 through the opening 133, the storage clip 52 can be easily taken out from the opening 133 by inverting the electric screwdriver without being subjected to the elastic force of the elastic positioning element 54 along the moving direction of the storage clip 52, and the storage clip 52 is ejected out without a radial through hole.

In general, in order to hold the working head 9, when the working head 9 is stored in the storage bin 521, the working head 9 is axially overlapped with the main body, so that it is impossible to distinguish what kind of working head 9 is stored in each storage bin 521 from the outer circumferential direction of the main body, and the present invention proposes the following three embodiments in order to solve this problem.

In the first embodiment of the storage clip preferred by the invention, the outer peripheral wall of the main body is provided with the viewing window 522 at least corresponding to the part of the storage bin 521, and the viewing window 522 is communicated with the storage bin 521 in the radial direction, so that the outer periphery of the storage bin 521 along the axial direction of the storage clip 52 is partially closed and partially opened outwards, which is convenient for an operator to easily see the shape of the head of the working head 9 from the opened part when selecting the working head 9, thereby quickly selecting the required working head 9. In order to effectively keep the working head 9 when the storage clamp 52 is placed independently, the length L of the view window 522 along the axial direction of the main body is less than one half of the length of the main body, preferably the length L of the view window is 0.3-0.4 times of the length of the main body, so that the shape of the head of the working head can be effectively displayed, and the working head can be prevented from falling off from the view window. Further, if the width W of the viewing window 522 in the circumferential direction of the main body is too large, the working head may slip off the viewing window when the storage clip 52 is placed in the housing, and if the width W is too small, it is not easy to accurately distinguish the shape of the working head, and it is preferable that the width W of the viewing window 522 is smaller than the diameter of the storage bin 521, and it is preferable that the width W of the viewing window 521 is 0.7 to 0.9 times the diameter of the storage bin.

In the second embodiment of the storage folder according to the preferred embodiment of the present invention, the storage bin 521 may be closed along the circumferential direction of the main body, the outer circumferential wall of the main body is provided with the recognition device 523 for indicating different working heads, the recognition device 523 corresponds to the position of the storage bin 521, the recognition device 523 is a generic term for identifying the working heads, and the most intuitive recognition device 523 is a pattern for indicating different shapes of the working heads, for example, a common cross head is indicated by a cross shape, and a line head is indicated by a line shape, so that the storage folder is suitable for each operator. It is of course possible to provide letters on the peripheral wall indicating different types of heads, for example, a cross head is indicated by "PH", a square head by "SL", a hexagonal head by "SW", a hexagram head by "TX", a dodecagram head by "Ms", a mijike head by "Pz", etc., which are suitable for professional operators. The recognition means 523 may be characters, symbols, numerals, shapes, combinations thereof, and the like.

The identification means 523 may be provided in a variety of ways, such as being printed, molded, embedded or adhered to the outer peripheral wall of the main body, so that the identification means is mounted in correspondence with the work head. Of course, it is easily understood by those skilled in the art that the recognition device 523 may be detachably mounted on the outer peripheral wall of the main body, and if the working head 9 is mounted not corresponding to the recognition device 523, the operator can adjust the mounting position of the recognition device 523.

In the third preferred embodiment of the storage clip of the present invention, the whole body of the storage clip 52 is made of transparent material, and the shape of the working head can be easily recognized from the outside of the storage clip 52, however, the whole body of the storage clip 52 does not need to be supported by transparent material, and the working head can also be recognized as long as the material corresponding to the head portion of the working head 9 is transparent, for example, the portion of the outer peripheral wall of the body closing the storage bin 521 is made of transparent material, preferably, the transparent portion made of transparent material is located at one end of the body in the axial direction, and the length of the transparent portion in the axial direction of the body is less than half of the length of the body in order to save material. In addition, the storage clip 52 itself may be open in a portion of the peripheral wall as in the first embodiment, and only the transparent ring 524 may be sleeved on the outside of the viewing window 522.

In practical use, a plurality of working heads are needed, if all the working heads are placed in the working head storage clamp, the size of the tool is increased, inconvenience is brought to an operator, but if one working head is replaced, the replacement is troublesome. The invention provides an independent storage clamp accessory, the working head can be quickly and conveniently replaced by directly replacing the storage clamp, a plurality of storage clamps can be prepared, and the storage clamp accessory occupies a small volume and is convenient to carry.

The above definitions of the various elements are not limited to the various specific configurations or shapes mentioned in the embodiments, and may be easily and commonly replaced by those skilled in the art. For example, the motor can be a gasoline engine or a diesel engine and the like to replace the motor; the working head can be a polygon with any regular cross section; in addition, in the above embodiment, the relative axial movement between the connecting shaft and the working head storage clamp may be fixing of the connecting shaft, and the working head storage clamp may move axially or rotate, and the connecting shaft may be coaxial with the motor shaft, and the configuration may be changed accordingly according to the internal configuration of different housings, so that new elements may be added, and unnecessary elements may be reduced.

Claims

1. The storage clamp for containing the working heads comprises a main body, wherein the main body is provided with a rotating axis, a plurality of containing bins for containing the working heads are arranged on the main body, the containing bins are parallel to the rotating axis and are uniformly arranged around the rotating axis, the main body is provided with an outer peripheral wall surrounding the containing bins, and the storage clamp is characterized in that: and the peripheral wall is provided with recognition devices for representing different working heads, and the recognition devices correspond to the positions of the accommodating bins.

2. The power tool of claim 1, wherein: the recognition device comprises characters, symbols or figures or a combination thereof representing different working head shapes.

3. The power tool of claim 1, wherein: the identification device comprises characters, symbols or figures or a combination thereof representing different working head models.

4. The power tool of claim 1, wherein: the identification device is fixed on the peripheral wall of the main body in one of printing, molding, embedding and pasting.

5. The power tool of claim 1, wherein: the periphery wall of the main body is provided with a plurality of projections or grooves parallel to the axial direction of the main body.

6. The power tool of claim 5, wherein: the identification means is located axially at one end of the peripheral wall relative to the body and the projection or recess is located axially at the other end of the peripheral wall relative to the body.

7. The power tool of claim 1, wherein: the identification device is removably mounted to the peripheral wall of the body.

8. The power tool of claim 1, wherein: the end face of the main body is provided with a plurality of positioning grooves corresponding to the containing bins.

9. The power tool of claim 8, wherein: any one of the plurality of positioning grooves communicates with the outer peripheral wall of the main body in a radial direction of the main body.

10. A power tool, comprising:

a housing;

a motor disposed in the housing and outputting rotational power;

the output shaft is provided with an accommodating hole which is axially arranged and used for accommodating the working head;

the transmission mechanism is arranged between the motor and the output shaft and can transmit the rotary power output by the motor to the output shaft;

the connecting shaft is arranged in the machine shell and can operate to enable the working head to be located at a working position in the accommodating hole;

the method is characterized in that: the power tool further comprising a storage clip as claimed in any one of claims 1 to 9, the connecting shaft being further operable to locate the working head in a stored position within the storage clip.