JPH03182022A - Preparation method of caulking contact - Google Patents

Abstract

PURPOSE:To caulk a contact without deforming a matrix against a thin plate by reinforcing the caulking part of the contact with a strip plate. CONSTITUTION:A stripe plate 1 is sent to a press-machine and a hole 1a for contact caulking is punched at a prescribed position. Then, burring process 1b is carried out on the periphery of the hole 1a. Next, a contact 3 cut out of a rod or tape contact in a prescribed length is inserted into the hole and temporary caulking is carried out and then actual caulking is carried out. By this way, the contact 3 is shifted in by the amount of positional shift of the contact 3 at the time of temporary caulking, the contact 3 bites to the processed part 1b and the overlapping part of the contact 3 and the strip plate 1 becomes large and thus caulking strength is further strengthened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a caulking contact, and particularly to a method for manufacturing a caulking contact in which a high-hardness contact is caulked and fixed to a thin plate base material.

[Conventional technology]

Conventionally, the method for manufacturing this type of caulked contact is to punch a round or square hole in an alloy strip, insert the cut contact into the punched hole, and crush the contact in the thickness direction to form the strip. There was a method of adding bite to the contact point, and a method of adding bite to the contact point by crushing the area around the hole in the band plate.

For example, in the conventional caulking method by crushing the contacts, as shown in FIG.
A is punched out (Fig. 3 (a)), the contact 3 is inserted into this hole 4a (Fig. 3 (b)), and the contact 3 is crushed in the thickness direction and bit into the band plate 4 to be fixed. (3rd
Figure (C).

At this time, if the strip plate 4 was a thin plate base material, the strip plate 4 would be deformed.

[Problem to be solved by the invention]

The conventional manufacturing method for caulking contacts described above was capable of caulking thick plate base materials, but for caulking thin plate base materials, a method of caulking by crushing the contacts was used.
This method has disadvantages such as deformation of the base material and strip plate, and difficulty in obtaining contact caulking strength and dimensional accuracy due to the small amount of assembly of the strip plate and contact points.

[Means to solve the problem]

The method for manufacturing a caulking contact of the present invention includes the steps of punching a contact caulking hole at a predetermined position in an alloy strip plate, reinforcing the punched contact caulking hole, and reinforcing a contact cut to a predetermined size. and inserting the contact into the caulking hole, crushing the contact, and fixing the contact to the alloy strip plate.

Further, in the method for manufacturing a caulking contact of the present invention, the step of reinforcing the contact caulking hole is a burring process.

Furthermore, in the method for manufacturing a caulking contact of the present invention, the step of reinforcing the contact caulking hole is a bending process.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIGS. 1(a) to d) are cross-sectional views of the contact caulking process with burring according to the first embodiment of the present invention, and FIGS. FIG. 3 is a cross-sectional view of a contact caulking process in which bending is performed as an example.

The first embodiment is a copper alloy strip 1 as shown in FIG. 1(a).
is sent to a press machine, and a hole 1a for contact caulking is made in the specified position.
Punch out. Next, as shown in FIG. 1(b), a burring process 1b is performed around the contact caulking hole 1a, and as shown in FIG.
), a contact 3 cut to a predetermined length from a rod-shaped or tape-shaped contact is inserted into the hole 1a, and temporarily crimped.

In addition, when temporarily caulking, the contact point position is shifted slightly above the predetermined position, and temporary caulking is performed. Next, in the next process, as shown in Figure 1 (
Caulk the book as shown in d). The contact position during this final caulking is a predetermined position. As a result, the contact point 3 is displaced downward by the amount that was displaced during temporary crimping, the contact point 3 bites into the burring processing part 1b, the amount of overlap between the strip plate 1 and the contact point 3 increases, and the crimping strength is further strengthened. Become something. In addition to the above method, it is also possible to use a single temporary crimping method in which the contacts are crimped at the same position, but the above method provides a better effect.

Also, it is better to carry out the actual caulking several times instead of once.
Effective against contact cracks, contact surface roughness, and contact retention strength.

The second embodiment shown in FIG.
As shown in Figure (a), burring is performed around the contact caulking hole 2a, and then the burring part is bent 2b as shown in Figure 2 (b).6 Next, as shown in Figure 2 (C). The contact 3, which has been sheared to a predetermined length, is inserted into the hole and temporarily swaged, and then permanently swaged as shown in FIG. 2(d).

According to the first and second embodiments as described above, by work-hardening the strip by burring and improving the strength of the hole by bending, the shearing of the hole and the deformation of the strip when caulking the contacts are reduced. It is possible to carry out stable caulking work without having to do so.

〔Effect of the invention〕

As explained above, the present invention applies burring or bending to the contact caulking part of the strip plate, thereby (1) Even if the contact has high hardness and poor malleability, the base material does not deform with respect to the thin plate. It becomes possible to swage the contacts.

(2) The caulking strength is strong, the reliability of the contacts is dramatically improved, and the range of applications of caulked contacts is expanded.

It has the following effects, and it is possible to significantly improve productivity, simplify process design, and reduce total costs compared to conventional welding.

[Brief explanation of drawings]

The construction drawings (a) to d) are cross-sectional views of the contact caulking process with burring according to the first embodiment of the present invention, and the figures 2 (a) to d) are the second embodiment of the present invention. FIGS. 3(a) to 3(C) are cross-sectional views of the contact caulking process using the bending process of the example, and FIGS. 3A to 3C are cross-sectional views of the contact caulking process using the conventional method. 1.2.4...Base material (band plate)-1a, 2a, 4a...
・Hole for contact caulking, 1b...burring processing, 2b・
...Bending processing, 3...Contact.

Claims (1)

[Claims] 1. A step of punching holes for contact caulking at predetermined positions of an alloy strip plate, and a step of reinforcing the punched holes for contact caulking,
A method for manufacturing a caulking contact, comprising the steps of inserting a contact cut to a predetermined size into the reinforced contact caulking hole, and crushing and fixing the contact to the alloy strip plate. 2. The method of manufacturing a caulking contact according to claim 1, wherein the step of reinforcing the contact caulking hole is a burring process. 3. The method of manufacturing a caulking contact according to claim 1, wherein the step of reinforcing the contact caulking hole is a bending process.