JPS6334564B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a double-ended electrical contact.

Conventionally, in order to make a double-ended electrical contact by the caulking method, there are two methods: inserting the wire rod 1 shown in FIG. 1a into the contact mounting hole 3 of the pedestal 2 as shown in FIG. A method of inserting the leg part of the rivet-type solid contact 4 shown in Figure 2a into the contact mounting hole 3 of the pedestal 2 as shown in Figure 2b, and caulking it;
The legs of the rivet-type composite contact 5 shown in Figure a are attached to the third
Insert it into the contact mounting hole 3 of the pedestal 2 as shown in Figure b,
A caulking method is used.

These caulking methods pose no problems if the contact material is a material with good workability, such as Ag, but if the material is a material with poor workability, cracks may occur after caulking, or in extreme cases, it may be difficult to manufacture rivet-type contacts using a header machine. There are some things I can't even do. In the case of materials with such poor workability, in order to make rivet-type contacts, the disc-shaped contact material 6 shown in FIG. Then, a rivet-type composite contact 8 was made by soldering as shown in FIG. 4c. This rivet-type composite contact 8 can be used when making a single-ended electrical contact, but when making a double-ended electrical contact, it can be used by combining the disc-shaped contact material 6 and the linear contact material 6 shown in Fig. 5a. A rivet-type composite contact is manufactured by attaching the contact material 6' to a rivet-type base material 7' with a thin head and low leg height as shown in FIG. 5b as shown in FIG. 5c. 8' is used. However, when the leg is inserted into the contact mounting hole of the pedestal and caulked, the contact obtained by the contact material 6' of the leg will crack, so a rivet-type composite contact with a contact material that is difficult to work with is used. It was not possible to make a double-ended electrical contact by using this method.

The present invention has been made to solve this problem, and provides a method that allows a double-ended electrical contact to be made by caulking even if a rivet-type composite contact equipped with a contact material with poor workability is used. That is.

The method of manufacturing an electrical contact of the present invention includes a rivet-type composite contact 12 having a groove 11 formed in the lower end of the leg 10 as shown in FIG. The respective legs 10 and 10' of the rivet type composite contact 12' having the projection 13 formed thereon are inserted into the contact mounting hole 15 of the base 14 facing each other as shown in FIG. After fitting, both rivet type composite contacts 12, 12' are caulked to the base 14 to form a double-headed contact 16, thereby making an electric contact 17.

According to this method of manufacturing the electrical contact 17, the heads 9, 9' of the rivet type composite contacts 12, 12' do not undergo plastic deformation when crimped onto the base 14, and only the leg parts 10, 10' deform. The contact material 9a of the heads 9, 9' is plastically deformed in the outer circumferential direction and comes into pressure contact with the peripheral wall of the contact mounting hole 15 of the pedestal 14, and at the same time, the groove 11 and the protrusion 13 are pressed into engagement and are firmly joined.
Even if it is a material with poor workability, it will never break.

Note that the leg portion 10 of one rivet type composite contact 12
If the side wall of the groove 11 at the lower end is tapered to form a dovetail groove, the groove 11 and the protrusion 13 can be more firmly joined.

As can be seen from the above explanation, according to the method of manufacturing an electrical contact of the present invention, a double-ended electrical contact can be made by caulking even if a rivet-type composite contact equipped with a contact material with poor workability is used. This has an excellent effect.

[Brief explanation of the drawing]

Figures 1a and b, Figures 2a and b, and Figures 3a and b are diagrams showing a conventional method of manufacturing a double-headed electrical contact by the crimping method, respectively, and Figures 4a, b, and c are conventional Figures 5a, b, and c are diagrams showing the manufacturing method of a conventional rivet type composite contact for double-headed contacts. Figures 6a, b, and c are 1 is a diagram showing a method of manufacturing an electric contact according to the present invention. 9, 9'...head, 10,10'...leg, 11
... Groove, 12, 12' ... Rivet type composite contact,
13...Protrusion, 14...Pedestal, 15...Contact mounting hole, 16...Double-ended contact, 17...Electric contact.

Claims (1)

[Claims] 1. Insert the legs of a rivet type composite contact with a groove formed on the lower end of the leg and a rivet type composite contact with a protrusion formed on the lower end of the leg facing each other into the contact mounting hole of the pedestal, and insert the legs into the groove. 1. A method for manufacturing an electrical contact, which comprises: fitting the rivet-type composite contact with the protrusion, and caulking both rivet-type composite contacts onto a base to form a double-headed contact.