JP2015214313A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate positioning when assembling an electronic control device even if a workspace is small, and improve workability at the time of mounting the electronic control device.SOLUTION: An electronic device 1 comprises: a connector 5; a substrate 2 for mounting the connector 5; and a case 3 for accommodating the substrate 2, which is mounted on a mounted surface directed in a substantially horizontal direction. At least one side of the substrate 2 is mounted along a vertical direction. The electronic device 1 also comprises: two brackets 9, 10 which have a plate-like shape parallel to the substrate 2, and protrude upward and downward of the case 3 so as to be coaxial along the vertical direction; and slits 18, 26 formed from inlet end parts 19, 27 of the side parts of the brackets 9, 10 toward deep end parts 20, 28 of the center.

Description

  The present invention relates to an electronic device.

An electronic control device mounted on an automobile or the like is configured by housing a circuit board on which electronic components are mounted in a housing. In such an electronic control device, the housing is fixed to a body to be attached such as a body frame to which the electronic control device is attached by screwing the housing.
Patent Document 1 below describes a structure in which a bracket is provided so as to protrude from an outer edge of a housing, and the electronic control device can be fixed to a vehicle body frame or the like.
Patent Document 2 below describes a structure that has two brackets having slits and allows the housing to be attached from the side.

JP 2004-186335 A JP 2004-66852 A

However, in the above-mentioned Patent Document 1, there is a problem that it is difficult to attach and remove the housing when the housing is attached to the vertical surface or when the work space is small.
Moreover, in the said patent document 2, even if it is a small work space, attachment and removal of a housing | casing are attained. However, there is a problem that the placement balance of the brackets is poor and workability when the electronic control device is attached is poor.

  The present invention has been made in consideration of such circumstances, and its purpose is to facilitate positioning when assembling the electronic control device even when the work space is small, and to improve workability when mounting the electronic control device. It is an object of the present invention to provide an electronic control device that can be made to operate.

  In order to achieve the above object, an electronic device according to the present invention includes a connector, a substrate on which the connector is mounted, and a case that accommodates the substrate and is attached to a mounting surface that faces a substantially horizontal direction. The electronic device is attached so that at least one side thereof is along the vertical direction, and is formed in a plate shape parallel to the substrate, and protrudes so as to be coaxial with the vertical direction above and below the case. It has a bracket and a slit formed from the inlet end portion on the side portion of the bracket toward the center rear end portion.

  In the electronic device, the connector is disposed at one end of the substrate such that the opening of the connector faces sideways, and the two brackets are disposed on the side where the connector is disposed, The slit may be configured such that the inlet end portion is formed to face the side opposite to the side where the connector is disposed.

  Further, in the electronic device, the slit may be formed to be inclined with respect to a horizontal direction so that a vertical height of the back end portion is increased in the vicinity of the back end portion. Good.

  According to the electronic device of the present invention, when the electronic device is attached via a bracket using bolts and nuts fixed to the attachment surface, the two brackets formed with slits are provided coaxially along the vertical direction. Therefore, the weight balance of the case when the electronic device is attached can be stabilized. Furthermore, workability at the time of attaching and detaching the electronic device can be improved by adopting a structure in which the slit is attached to the bolt provided on the attached surface.

It is a perspective view of the electronic controller of an embodiment of the present invention. It is the side view (a) which shows a mode that the electronic control apparatus of embodiment of this invention was attached to the battery storage box, a top view (b), and a side view (c) which shows a mode that it pulls out from a battery storage box. It is an enlarged view of the bracket of the electronic control unit of the embodiment of the present invention. It is detail drawing for demonstrating the determination method of the angle of the slit of the bracket of an electronic controller.

Hereinafter, an electronic control device (electronic device) according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an electronic control device 1 according to an embodiment of the present invention. The electronic control device 1 of the present embodiment is an electronic control device (ECU: Electronic Control Unit) for an automobile. Specifically, the electronic control device 1 is a device that controls a battery (secondary battery, rechargeable battery) mounted on a vehicle such as an electric vehicle (EV) or a hybrid vehicle (HV). is there.

As shown in FIG. 1, the electronic control device 1 includes an aluminum case 3 that accommodates and holds a circuit board 2 (substrate), and a metal cover 4 that is attached to the case 3. The case 3 and the cover 4 form a housing that accommodates the circuit board 2. 1 is a longitudinal direction of the circuit board 2, and is a direction facing the vertical direction when the electronic control device 1 is attached to the battery storage box 11 shown in FIG. The electronic control device 1 is attached to the battery housing box 11 so that at least one side of the circuit board 2 is along the vertical direction.
Note that the case 3 and the cover 4 are not limited to metal, and may be made of resin, for example.

The circuit board 2 is a printed board in which a wiring pattern is formed on each surface including the inner layer, and various electronic components are mounted, and three connectors 5 are mounted in this embodiment. These connectors 5 are made of, for example, a high thermal conductive resin such as PBT (polybutylene terephthalate) or PPS (polyphenylene sulfide). The connectors 5 are arranged in the connector openings 6 formed in the case 3 and are fixed by screws. It is fixed to the substrate 2.
The circuit board 2 has a plurality of screw holes formed in the periphery thereof, and screws are inserted into the screw holes and screwed into screw holes (not shown) formed in the case 3. The circuit board 2 is held and fixed to the case 3.

The case 3 has a substantially rectangular box shape with a bottom, and has a housing portion for housing and holding the circuit board 2 inside the central portion thereof, and the circuit board 2 is held in the housing portion. In this case 3, three connector openings 6 are formed corresponding to the three connectors 5 so that the opening of the connector 5 faces the outside.
The case 3 has two brackets including a first bracket 9 and a second bracket 10. The electronic control device 1 is attached to a battery housing box (see FIG. 2) via two brackets 9 and 10.

  As shown in FIG. 2, the electronic control device 1 is attached to a mounting surface 12 of a battery storage box 11 (battery box) serving as a mounted body, and a battery and a higher-order model in the battery storage box 11 by a connector wiring cable 13. It is connected to the electronic control device. In FIG. 2, an arrow Z indicates a vertical direction (up and down direction), and an arrow X indicates a horizontal direction along the mounted surface 12 of the electronic control device 1. 2 shows the case where the mounted body is the battery storage box 11, for example, the mounted body is a vehicle body (vehicle body frame), and the electronic control unit 1 is directly mounted on the vehicle body (vehicle body frame). It may be.

The electronic control device 1 according to the present embodiment is attached to the attachment surface 12 facing the substantially horizontal direction X.
Further, the electronic control device 1 is arranged in the gap G between the plurality of battery storage boxes 11 so that the longitudinal direction of the circuit board 2 is along the vertical direction Z and the opening of the connector 5 faces sideways. Yes. The connector 5 is disposed at one end of the circuit board 2.
Because of the installation space, the plurality of battery storage boxes 11 are installed at a necessary minimum interval, so that the gap G between the plurality of battery storage boxes 11 is set to be slightly larger than the thickness of the electronic control device 1. Has been. The electronic control device 1 is positioned so that the longitudinal direction of the openings of the plurality of connectors 5 is along the vertical direction Z, and the connector 5 is easy for the user to access the connector 5 from the gap G between the battery storage boxes 11. Has been placed.

The electronic control device 1 is fixed to the mounted surface 12 by two stud bolts 15 provided on the mounted surface 12 and a nut 16 screwed into the stud bolt 15 in advance. In other words, the mounting surface 12 is provided with two shafts used for mounting the electronic control device 1, and a male screw is formed on the outer peripheral surface of the shaft. The electronic control device 1 is fixed by using a stud bolt 15 and a nut 16 screwed into the stud bolt 15 in advance.
The nut 16 is preferably a flange nut. The flange nut is a nut in which a disc-shaped flange is provided on the seating surface of the hexagonal nut. By adopting the flange nut, the seating surface of the nut 16 can be stabilized.

  The first bracket 9 is formed so as to be positioned on the upper portion of the case 3. The second bracket 10 is formed so as to be positioned below the case 3. A first slit 18 is formed in the first bracket 9, and a second slit 26 is formed in the second bracket 10.

The electronic control device 1 is fixed by tightening the nut 16 attached to the stud bolt 15 inserted in the slit and sandwiching the brackets 9 and 10 between the attached surface 12 and the nut 16.
When the electronic control device 1 is attached, the electronic control device 1 is moved in the X direction so that the stud bolt 15 attached to the attachment surface 12 enters the slits 18 and 26 and is screwed into the stud bolt 15. The brackets 9 and 10 are fastened with the nuts 16.
As shown in FIG. 2C, when the electronic control device 1 is removed, the nut 16 is loosened and the electronic control device 1 is pulled out in the X direction.

  As shown in FIG. 3, the first bracket 9 has a thick plate shape parallel to the main surface of the case 3 and the mounted surface 12, and is formed on the connector 5 side at the upper part of the case 3. The first bracket 9 has a trapezoidal shape, and a lower bottom portion formed longer than the upper bottom portion is connected to the main body of the case 3.

  The first slit 18 is formed on the side of the first bracket 9 from the side opposite to the connector 5 toward the center. In other words, the first slit 18 includes the inlet end 19 provided at the side of the first bracket 9, the back end 20 provided near the center of the first bracket 9, the inlet end 19 and the back The slit body portion 21 is connected to the end portion 20. The entrance end 19 and the slit body 21 are dimensioned to allow the stud bolt 15 to pass therethrough. In other words, the width of the inlet end 19 and the slit body 21 is formed slightly larger than the diameter of the stud bolt 15. The first slit 18 is formed in the horizontal direction X so that the inlet end 19 faces the side opposite to the side where the connector 5 is disposed.

The slit main body portion 21 includes a horizontal portion 22 extending in the horizontal direction X from the entrance end portion 19, and an inclined portion 23 that is inclined with respect to the horizontal direction X toward the back end portion 20 from an end portion on the back side of the horizontal portion 22. It consists of and.
The inclined portion 23 in the vicinity of the back end portion 20 in the slit main body portion 21 is formed so that the back end portion 20 is higher in height in the vertical direction Z than the entrance end portion 19. That is, the inclined portion 23 is formed so as to extend in the direction opposite to the gravitational direction from the inlet end portion 19 side toward the back end portion 20. In other words, the first slit 18 is formed such that the extending direction of the slit main body 21 is inclined with respect to the horizontal so that the distance from the case 3 increases from the entrance end 19 toward the back end 20. ing.
The inclination angle α of the inclined portion 23 with respect to the horizontal direction X is about 45 °.

  In addition, a protrusion 24 protruding upward is formed at the inlet end 19 of the first slit 18. The protrusion 24 is formed on the horizontal portion 22 of the first slit 18, and when the stud bolt 15 moves relative to the horizontal portion 22 when the electronic control device 1 is pulled out as shown in FIG. The stud bolt 15 is formed at a position where it interferes.

  The second bracket 10 has a thick plate shape parallel to the main surface of the case 3 and the mounting surface 12, and is formed on the connector 5 side at the bottom of the case 3. A second slit 26 is formed in the second bracket 10. The second bracket 10 has a trapezoidal shape, and an upper bottom portion that is longer than the lower bottom portion is connected to the main body of the case 3.

  The second slit 26 is formed on the side of the second bracket 10 from the side opposite to the connector 5 toward the center. In other words, the second slit 26 includes the entrance end 27 provided on the side of the second bracket 10, the back end 28 provided near the center of the second bracket 10, the entrance end 27 and the back The slit main body 29 is connected to the end 28. The entrance end 27 and the slit main body 29 are dimensioned to allow the stud bolt 15 to pass therethrough. In other words, the width dimension of the inlet end portion 27 and the slit main body portion 29 is slightly larger than the diameter of the stud bolt 15. The second slit 26 is formed so that the inlet end 27 in the horizontal direction X faces away from the side where the connector 5 is disposed.

The slit main body 29 of the second slit 26 is inclined with respect to the horizontal direction X from the entrance end 27 toward the back end 28.
The slit main body portion 29 of the second slit 26 is formed such that the rear end portion 28 is higher in the vertical direction Z than the inlet end portion 27. In other words, the second slit 26 is formed such that the extending direction of the slit main body 29 is inclined with respect to the horizontal so that the distance from the case 3 decreases from the entrance end 27 toward the back end 28. ing.
The inclination angle α of the slit body 29 with respect to the horizontal direction X is about 45 °.

  Further, a thinned portion 31 is formed in the vicinity of the center portion of the first bracket 9 and the second bracket 10. The lightening part 31 is a part formed by thinning a part of the brackets 9 and 10 by performing a lightening process on the brackets 9 and 10. Specifically, the central portions of the brackets 9 and 10 that are separated from the outer shapes of the brackets 9 and 10 by a predetermined distance are formed thinner than other portions.

The 1st bracket 9 and the 2nd bracket 10 are formed so that the position of the horizontal direction X may correspond. Specifically, the first bracket 9 and the second bracket 10 are formed so that the positions in the horizontal direction X of the centers of the arcs forming the rear end portions 20 and 28 of the slits 18 and 26 coincide. As shown in FIG. 3, the center of the arc that forms the back end portion 20 of the slit 18 and the center of the arc that forms the back end portion 28 of the slit 26 are arranged on the axis along the vertical direction indicated by the symbol A. Has been.
Each corner of the first bracket 9 and the second bracket 10 is rounded.

Next, a method for determining the angles of the slits 18 and 26 formed in the brackets 9 and 10 will be described.
In determining the angles of the slits 18 and 26, as shown in FIG. 4, three types of angles (30 °, 45 °, and 60 °) were verified.
First, as shown in FIG. 4A, when the angle of the slits 18 and 26 is 30 °, the fastening seating surface of the nut 16 is separated from the seating surface of the brackets 9 and 10 by the moment when the nut 16 is tightened. I sometimes missed it. Further, when the nut 16 is loosened, the electronic control device 1 may fall due to its own weight.

As shown in FIG. 4C, when the angle of the slits 18 and 26 is 60 °, depending on the shape of the protrusion 24, the width of the stud bolt 15 cannot be secured, or the electronic control device 1 Sometimes it was difficult to pull out.
On the other hand, as shown in FIG. 4B, when the angle of the slits 18 and 26 is 45 °, the fastening seat surface of the nut 16 is more than the seating surface of the brackets 9 and 10 due to the moment when the nut 16 is tightened. In addition, when the nut 16 was loosened, the electronic control device 1 was not dropped due to its own weight.

According to the above embodiment, when the electronic control device 1 is mounted via the brackets 9 and 10 using the stud bolt 15 and the nut 16 fixed to the mounting surface 12 of the battery storage box 11, the slits 18 and 26 are formed. By providing the two brackets 9 and 10 on the same axis along the vertical direction, the weight balance of the case 3 when the electronic control device 1 is attached can be stabilized. Furthermore, by adopting a structure in which the slits 9 and 10 are attached to the stud bolt 15 provided on the attached surface 12, workability at the time of attaching and detaching the electronic control device 1 can be improved.
That is, when the horizontal positions of the brackets 9 and 10 that are thick plates and are heavy are aligned vertically, the weight balance of the case 3 and thus the weight balance of the electronic control device 1 can be improved.

  Further, by arranging the brackets 9 and 10 on the side where the connector 5 is arranged, the brackets 9 and 10 can be easily accessed by arranging the connector 5 at an easily accessible position, thereby improving work efficiency. be able to.

  Further, since the slits 18 and 26 are formed to be inclined, the stud bolt 15 can be held by the weight of the electronic control unit 1. Thereby, even when the work space is small, positioning when assembling the electronic control device 1 is facilitated, and rotation and falling of the electronic control device 1 when the nut 16 is loosened can be prevented.

  Moreover, when the electronic control device 1 is removed by providing the protrusion 24 protruding upward at the inlet end 19 of the first bracket 9, in order to avoid interference between the stud bolt 15 and the protrusion 24, Since it is necessary to move the control device 1 away from the stud bolt 15, the collision between the stud bolt 15 and the electronic control device 1 is prevented.

  In addition, by reducing the thickness of the brackets 9 and 10 in the vicinity of the center of the brackets 9 and 10, the vibration impact transmitted from the brackets 9 and 10 to the main body when the electronic control device 1 vibrates is suppressed. Can do.

  Further, by setting the angle of the slits 18 and 26 with respect to the horizontal direction X to 45 °, it is possible to prevent the fastening seating surface of the nut 16 from being detached from the seating surface of the brackets 9 and 10 due to the moment when the nut 16 is tightened. can do. Further, when the nut 16 is loosened, it is possible to prevent the electronic control device 1 from falling due to its own weight.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the configurations and combinations of the embodiments in the embodiments are examples, and the addition and omission of configurations are within the scope not departing from the gist of the present invention. , Substitutions, and other changes are possible. Further, the present invention is not limited by the embodiments, and is limited only by the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... Electronic control apparatus (electronic device) 2 ... Circuit board (board | substrate) 3 ... Case 4 ... Cover 5 ... Connector 6 ... Connector opening 9 ... 1st bracket 10 ... 2nd bracket 11 ... Battery storage box 12 ... Mounted surface DESCRIPTION OF SYMBOLS 13 ... Connector wiring cable 15 ... Stud bolt 16 ... Nut 18 ... 1st slit 19 ... Inlet end part 20 ... Back end part 21 ... Slit main-body part 22 ... Horizontal part 23 ... Inclined part 24 ... Projection part 26 ... Second slit 27 ... Inlet end 28 ... Back end 29 ... Slit body 31 ... Meat removal part X ... Horizontal direction Z ... Vertical direction

Claims (3)

A connector;
A board on which the connector is mounted;
An electronic device that accommodates the substrate and includes a case attached to a surface to be attached that faces substantially in a horizontal direction, and is attached so that at least one side of the substrate is along the vertical direction,
Two brackets projecting so as to be coaxial with the vertical direction above and below the case, forming a plate shape parallel to the substrate;
An electronic device comprising: a slit formed from an inlet end portion of a side portion of the bracket toward a central rear end portion. The connector is disposed at one end of the substrate such that the opening of the connector faces sideways,
The two brackets are arranged on the side where the connector is arranged,
2. The electronic device according to claim 1, wherein the slit is formed so that the inlet end portion faces a side opposite to a side where the connector is disposed. 3.   2. The slit according to claim 1, wherein the slit is formed to be inclined with respect to a horizontal direction so that a vertical height of the back end portion is increased in the vicinity of the back end portion. Item 3. The electronic device according to Item 2.

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