JP7578014B2 - Method for assembling electrical equipment, electrical equipment and assembly jig - Google Patents

Description

The present invention relates to assembly technology for electrical equipment.

An example of an electrical device is the control device for an electric vehicle described in Patent Document 1. A pair of main terminals of this electrical device are connected to a battery external to the power supply controller, and input power is supplied from this battery to the power supply controller's board. The boards consist of, for example, two boards, a drive board and a control board, and output a control power supply voltage and control signals. The main terminals are screwed to the drive board and the control board. This screwing allows current to flow from the battery to the drive board and the control board.

JP 2003-111202 A

The main terminal of the electrical device is fixed to the drive board and control board by screwing them to the drive board and control board, which are arranged in parallel inside the case of the electrical device. Here, for example, in the process of passing the main terminal through the insertion hole of the control board during the assembly process of the electrical device, the main terminal is not fixed to the drive board because the screw is not fastened. At this time, the positional relationship between the legs of the main terminal and the center of gravity is shifted, causing imbalance. For example, as shown in Figure 4, in the first of two boards arranged in the case 2 during the assembly process of the electrical device 1, the main terminal 4 of board 3A, which is arranged first of two boards arranged in the case 2, cannot stand upright by itself and will tilt. Due to this tilt of the main terminal 4, it becomes difficult to pass the main terminal 4 through the insertion hole 302 of board 3B in Figure 3, which is arranged in parallel to board 3A inside the case 2.

In view of the above circumstances, the present invention aims to improve the assembly of electrical equipment by suppressing the inclination of the main terminal relative to the circuit board inside the case of the electrical equipment during the assembly process.

Therefore, one aspect of the present invention is a method for assembling an electrical device in which, during the process of screwing main terminals to two boards housed in a case of the electrical device, an assembly jig is interposed between one of the two boards and the base of the main terminal at the outer edge of the case to make the terminal body of the main terminal stand upright, while the terminal body is inserted into the insertion hole of the other of the two boards.

One aspect of the present invention is an electrical device having two boards, a case in which the two boards are housed, and a main terminal that is screwed to the two boards within the case, the main terminal having a base portion that is fixed to one of the two boards and a terminal body portion that stands upright on the base portion, and the terminal body portion is inserted into an insertion hole of the other of the two boards while standing upright at the outer edge of the case by an assembly jig that is interposed between the one board and the base portion during the fastening process.

One aspect of the present invention is an assembly jig that, during the process of screwing main terminals to two boards housed in a case of an electrical device, stands upright a terminal body of the main terminal that is interposed between one of the two boards and the base of the main terminal at the outer edge of the case and is inserted into an insertion hole of the other of the two boards.

In one aspect of the present invention, the assembly jig includes a support body portion that protrudes from the outer edge of the case onto the surface of one of the substrates during the process to support the pedestal portion, and an auxiliary support portion that abuts against the outer periphery of the case to support the support body portion along the surface.

In one aspect of the present invention, in the assembly jig, the auxiliary support portion includes a knob portion that is operated during the process.

According to the present invention, the inclination of the main terminal relative to the circuit board inside the case of the electrical device during the assembly process of the electrical device is suppressed, thereby improving the assembly of the electrical device.

1A is a side view of a case in which a substrate of an electric device according to an embodiment of the present invention is disposed and an assembly jig therefor, and FIG. 1B is a plan view of the case and the assembly jig. 5A to 5C are explanatory diagrams illustrating an assembly process of the electrical device. FIG. 13 is a plan view of a case in which terminals are arranged on a board without using an assembly jig during the assembly process of the electrical device. FIG. FIG. 4 is an electric circuit diagram showing an application example of the electric device.

The following describes an embodiment of the present invention with reference to the drawings.

The electric device 1 according to one embodiment of the present invention shown in Figures 1 to 3 is used, for example, as the control unit 70 of the power supply controller 7 of the synchronous motor 10 of Patent Document 1 shown in Figure 5.

As shown in FIG. 3, the electrical device 1 has two boards, boards 3A and 3B, housed in the case 2, and a pair of main terminals 4 fastened to the boards 3A and 3B within the case 2.

The board 3A functions as a drive board that uses, for example, a battery 71 external to the power supply controller 7 as an input power source and outputs an on/off drive signal for the switching element of the inverter circuit 72. On the other hand, the board 3B functions as a control board that uses the battery 71 as an input power source and generates and outputs a control power supply voltage for the current detector 73, position detector 74, etc.

As shown in Figures 1 to 3, the main terminals 4 are inserted into the board 3B inside the case 2 and are erected in a pair on the board 3A, and are electrically connected to the boards 3A and 3B. Of the pair of main terminals 4, one main terminal 4 can be electrically connected to the negative (-) side of the battery 71, and the other main terminal 4 can be electrically connected to the positive (+) side of the battery 71 via the contact 75 and the fuse 76.

The main terminal 4 is made of a conductive material and integrally comprises a base portion 41, a terminal body portion 42, and a fixing portion 43. The base portion 41 is fixed to one of the boards 3A and 3B, that is, the board 3A. The terminal body portion 42 is cylindrical and stands on the base portion 41. The fixing portion 43 is fastened to the board 3A by screwing, fixing the base portion 41 to the board 3A.

During the fastening process, the assembly jig 5 is interposed between the board 3A and the base 41 of the main terminal 4 at the outer edge 21 of the case 2, and stands upright the terminal body 42 of the main terminal 4 that is inserted into the insertion hole 302 of the board 3B. As shown in FIG. 1, the assembly jig 5 is integrally provided with a plate-shaped support body 51, an auxiliary support 52, and a knob 53. During the fastening process, the support body 51 protrudes from the outer edge 21 of the case 2 onto the surface of the board 3A inside the case 2, and supports the base 41 of the main terminal 4. The auxiliary support 52 abuts against the outer periphery 22 of the case 2 to support the support body 51 along the surface of the board 3A. The knob 53 is gripped and operated by the worker during the fastening process.

The assembly process of electrical device 1 will be explained with reference to Figures 1 to 3.

First, the board 3A is placed in the case 2 and then screwed in place. Next, when the worker operates the knob 53 of the assembly jig 5, the auxiliary support part 52 of the assembly jig 5 comes into contact with the outer periphery 22 of the case 2, and the support body part 51 of the assembly jig 5 is positioned along the surface of the board 3A near the fixing part of the main terminal 4 on the board 3A.

Next, the base portion 41 of the main terminal 4 is placed on the support body portion 51 of the assembly jig 5 so that the fastening hole 301 of the substrate 3A and the fastening hole 401 of the main terminal 4 meet. At this time, as shown in FIG. 1, the terminal body portion 42 of the main terminal 4 is supported upright on the substrate 3A by the support body portion 51.

Next, as shown in FIG. 2, the terminal body 42 is inserted into the insertion hole 302 of the substrate 3B, and the substrate 3B is placed in the case 2 so that the fastening hole 401 of the main terminal 4 in FIG. 1(b) and the fastening hole 303 of the substrate 3B in FIG. 2 meet.

Then, as shown in FIG. 3, when the screw 6 is screwed into the fastening hole 303 of the board 3B, the fastening hole 401 of the main terminal 4, and the fastening hole 301 of the board 3A, the main terminal 4 is fastened to the boards 3A and 3B. After that, when the support body part 51 of the assembly jig 5 is pulled out from between the boards 3A and 3B by operating the knob part 53 of the assembly jig 5, the installation of the boards 3A, 3B, and main terminal 4 in the case 2 is completed.

According to the above-described assembly process of the electrical device 1, in the process of screwing the main terminal 4 to the boards 3A and 3B in the case 2 of the electrical device 1, the terminal body 42 of the main terminal 4 is supported upright on the board 3A by the support body 51 of the assembly jig 5. Therefore, the inclination of the terminal body 42 of the main terminal 4 on the board 3A is suppressed during the assembly process, improving the ease of assembly of the electrical device 1.

In particular, the auxiliary support portion 52 of the assembly jig 5 abuts against the outer periphery 22 of the case 2, so that the support body portion 51 of the assembly jig 5 is positioned along the surface of the board 3A near the fixing portion of the main terminal 4 on the board 3A. Then, the base portion 41 of the main terminal 4 is positioned on this support body portion 51, so that the terminal body portion 42 of the main terminal 4 can stand upright relative to the board 3A. Therefore, tilting of the terminal body portion 42 is reliably avoided during the fastening process, and the main terminal 4 stands upright on the board 3A more stably.

In addition, the auxiliary support portion 52 of the assembly jig 5 is provided with a knob portion 53, which makes it easier to attach and remove the assembly jig 5 to the case 2, further improving the ease of assembly of the electrical device 1.

It is clear that the present invention is not limited to the power supply controller of this embodiment, but can be effectively applied to all electrical equipment that uses a main terminal and two boards.

Reference Signs List 1...Electrical device 2...Case, 21...Outer edge portion, 22...Outer periphery 3A, 3B...Substrate, 301, 303...Fastening hole, 302...Through hole 4...Main terminal, 41...Base portion, 42...Terminal body portion, 43...Fixed portion, 401...Fastening hole 5...Assembly jig, 51...Support body portion, 52...Auxiliary support portion, 53...Grip portion 7...Power supply controller, 70...Control portion, 71...Battery, 72...Inverter circuit, 73...Current detector, 74...Position detector, 75...Contact, 76...Fuse 10...Synchronous motor

Claims (5)

A method for assembling an electrical device, characterized in that, during a process of screwing a main terminal to two boards housed in a case of an electrical device, an assembly jig is interposed between one of the two boards and a base portion fixed to the one board, and a terminal body portion of the main terminal erected on the base portion is made to stand upright with respect to the one board , while the terminal body portion is inserted into an insertion hole of the other of the two boards. Two boards,
The case that houses these two boards,
A main terminal is screwed to the two boards in the case;
having
The main terminal is
a base portion fixed to one of the two substrates;
A terminal main body portion erected on the base portion;
Equipped with
An electrical device characterized in that, during the fastening process , an assembly jig is interposed between the one of the boards and the base portion fixed to the one of the boards , so that the terminal main body portion stands upright relative to the one of the boards while being inserted into an insertion hole of the other of the two boards. An assembly jig characterized in that, during the process of screwing a main terminal to two boards housed in a case of an electrical device , the jig is interposed between one of the two boards and a base portion fixed to the one board , so that the terminal body portion of the main terminal standing on the base portion stands upright relative to the one board , while the terminal body portion is inserted into an insertion hole of the other of the two boards. a support body portion that protrudes from an outer edge of the case to a surface of the one substrate and supports the base portion;
an auxiliary support portion that abuts against an outer periphery of the case and supports the support body portion along the surface;
The assembly jig according to claim 3, further comprising: The assembly jig according to claim 4, characterized in that the auxiliary support part is provided with a knob part that is operated during the process.

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