JPS5854760Y2 - Relay box terminal mounting device - Google Patents

Description

[Detailed description of the invention] This invention relates to a terminal mounting device for a relay box that attaches tab terminals to the rear cover of the relay box. The purpose is to attach the terminal to the rear cover and ensure easy installation.

Conventionally, when attaching tab terminals to the rear cover of a relay box, the following method was used.

■An insert method in which a tab terminal is embedded in the mold at the same time as the rear cover is molded with resin, and the rear cover is integrally molded with the tab terminal. ■A hole for inserting the tab terminal is formed during the resin molding of the rear cover, and after molding. There are two methods: inserting the tab terminal into the hole and fixing it with adhesive; and (ii) fixing the tab terminal to the rear lid using a holding plate from the back of the tab terminal without using the adhesive described in (iii) above. was.

However, in case (2), resin adhered to the contact portion of the tab terminal, causing poor contact, and when the resin was removed, the plating of the tab terminal was likely to be damaged, which ultimately caused poor contact.

In case (2), since the adhesive has fluidity, the adhesive flowed and adhered to the tab terminal contact area, causing poor contact.

Furthermore, in the case of (1), although the poor contact that occurs in the cases (2) and (3) does not occur, a separate holding plate for the tab terminal is required, which has the drawback of increasing the manufacturing cost of the holding plate and the number of installation steps.

This idea was made with the above points in mind,
Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

As shown in Figure 1, a switchboard 1 has an indicator light 2 and a relay box 3.
A display device 4 with a relay is attached.

Inside this relay box 3 is a relay 5. An electronic component 6 and a resistor 7 are stored, and these components are stored in a rear cover 8 of the relay box 3.
It is electrically led out from the tab terminal 9 of.

This tab terminal 9 is formed to have a cross section as shown in FIG.

One end is an external terminal 10 and the other end is an internal terminal 11.

On the other hand, when the rear cover 8 is molded with resin, a fitting hole 12 into which the tab terminal 9 is inserted is formed, and the external terminal 10 of the tab terminal 9 is inserted into the fitting hole 12 from the inside of the rear cover 8. One side of the abdomen 13 of the tab terminal 9 is brought into contact with the back surface 14 of the rear lid 3 to prevent removal in the insertion direction.

Next, the tab terminal 9 is prevented from being pulled out in the other direction as follows.

That is, a hole 16 for the internal terminal 11 of the tab terminal 9 is provided in the hard printed circuit board 15 that controls the wiring inside the relay box 3, and the internal terminal 11 is inserted into the hole 16 for insertion. The printed circuit board 15 is brought into contact with the other side of the abdomen 13 of the tab terminal 9, and the printed circuit board 15 is fixed to the rear lid 8 with screws 17.

Therefore, at the same time as the printed circuit board 15 is fixed to the rear cover 8, the tab terminals 9 are fixed to the rear cover 8.

As described above, according to the relay box terminal mounting device of this invention, the tab terminal is formed into a cross-sectional shape, one end is an external terminal, the other end is an internal terminal, and the terminal is inserted into the insertion hole of the rear cover of the relay box. Insert the external terminal of the tab terminal from the inside of the rear lid, and bring one side of the abdomen of the tab terminal into contact with the rear lid.
Insert the insertion hole of the hard printed circuit board that controls the relay wiring into the internal terminal of the tab terminal, and also touch the printed circuit board to the other side of the abdomen of the tab terminal, and fix the printed circuit board to the rear cover with screws. By doing this, the tab terminals are sandwiched and fixed between the rear cover and the printed circuit board at the same time as they are attached to the rear cover of the printed circuit board, making the installation extremely easy, and since there is no influence of resin or adhesive, the tab terminals There is no contact failure at the most important contact part, and the tab terminal does not wobble when inserting or pulling out the insertion terminal 18 from the tab terminal. Production costs are high because boards are used together.

The number of man-hours will also be reduced.

[Brief explanation of drawings]

The drawings show one embodiment of the relay box terminal attachment device of this invention, with FIG. 1 being a perspective view of the relay box, and FIG. 2 being a sectional view of the main parts. 3...Relay box, 5...Relay, 8.
...Rear cover, 9...Tab terminal, 10...
...External terminal, 11...Internal terminal, 12.
...Insertion hole, 13...Abdomen, 15...
...Printed circuit board, 16...Fitting hole, 17.
·····screw.

Claims (1)

[Scope of utility model registration request] The tab terminal is formed into a shape in cross section, one end is an external terminal, the other end is an internal terminal, and the external terminal of the tab terminal is inserted into the insertion hole of the rear lid of the relay box from the inside of the rear lid. Place one side of the abdomen of the terminal against the rear cover, insert the insertion hole of the hard printed circuit board that controls the wiring of the relay into the internal terminal of the tab terminal, and place the printed circuit board on the other side of the abdomen of the tab terminal. A relay box terminal mounting device in which the printed circuit board is fixed to the rear cover with screws.