JPS59158023A - Method of producing electric contactor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an electrical contact, and particularly to an improvement in a method for attaching a contact material to a composite material.

Conventionally, in order to manufacture an electric contact, as shown in FIG. The prismatic composite contact material 2 is then plastically worked into an octagonal cylindrical composite contact material 2a as shown in Figure C, and then the octagonal prismatic composite contact material 2a is transformed into a cylindrical composite contact material 2b as shown in Figure C. This cylindrical composite contact material 2b' is then plastically worked into a rivet-shaped composite contact material 2d having an oval head 2c as shown in Figure d, and then this rivet-shaped composite contact material 2d is is inserted into the circular hole 4 previously drilled in the base material 3 as shown in Figure e, as shown in Figure F, and the corresponding rear leg 20' is inserted around the periphery of the circular hole 4 on the back side of the base material 3. As shown in Fig. 2a, a cylindrical contact material 6 is made by cutting the contact wire 5 having a circular cross section to the required length, and then the cylindrical contact material 6 is processed into a header. A disk-shaped head 7 as shown in
The rivet-shaped contact material 7 shown in a' is made, and then this rivet-shaped contact material 7 is fed by a parts feeder to the oval hole 4 previously drilled in the base material 3 as shown in Fig. C.
A method was adopted in which the rear legs 7b were inserted as shown in FIG.

However, the manufacturing method of these electrical contacts requires contact material +
Since V-rivet molding takes time and effort, manufacturing efficiency is poor and costs are high. In addition, when the contact material is formed into a rivet type, dents may occur on the contact surface3.Furthermore, if the composite material is a thin plate with a thickness of around 0.1 yx, when the rivet type contact material is caulked, the composite material may is transformed.

The present invention has been made to solve these problems, and there is no need to form the contact material into an IJ event, and the contact material is caulked so that no dents are created on the contact surface and the composite material of the thin plate is not deformed. The purpose of the present invention is to provide a method for manufacturing an electric contact.

Hereinafter, one embodiment of the method for manufacturing an electric contact according to the present invention will be explained with reference to the drawings.As shown in FIG.
A prismatic composite contact material 2 is produced by cutting the composite contact strip material 1 formed by joining the base strip material 1b to the base strip material 1b. Square hole 4'
Then, the four corners of the composite contact material 2 located on both the upper and lower surfaces of the base material 3 are shaved from above as shown in Figure d, and the protrusion 8 is twisted to one side. After bending, the composite contact material 2 is caulked to the base material 3 to obtain an electric contact 9.

Next, another embodiment will be explained.
As shown in FIG. This protrusion 8 is bent downward, and the composite contact material 2 is caulked to the base material 3 to obtain an electric contact 9'.

Incidentally, each of the above embodiments is a case in which the composite contact material 2 is caulked to the base material 3, but a solid contact material may be caulked to the base material 3 in the same manner.

As described above, in the method for manufacturing an electrical contact of the present invention, since the contact material is not molded into a laribet type, it can be manufactured efficiently without requiring much time and effort, and the cost can be reduced. Furthermore, since the contact material is not formed into a rivet shape, no dents will be formed on the contact surface. Furthermore, the thickness of the composite material is 0. Even in the case of thin plates around I MJ1, the corners of the contact material are shaved and bent to the upper and lower surfaces of the corners of the square holes in the composite material and caulked, so no large pressing force is applied to the composite material, and the composite material is It is almost never deformed.

Next, in order to clarify the effects of the method of manufacturing an electric contact of the present invention, specific examples and conventional examples thereof will be described.

〔Example〕

As shown in Figure 3a, the width is 1.6 yux and the thickness is 0.21
The contact tape 1a made of EJ's Ag-Cd0 has a width of 1.6
1EIN.

A composite contact strip material 1t formed by joining a base strip material 1b made of Cu with a height of 1.3y is cut to a length of 1.6u to produce a composite contact material 2 in the form of a rectangular column in plan view. This composite contact material 2 is pre-prepared to a width of 5.5 mm as shown in the figure. Ow; *.

A hole of 1.65 μl vertically and horizontally is drilled in the center of one side of the base material 3 made of thin bronze with a thickness of 0.1 w and a length of 9.5 μ.
Insert the composite contact material 2 into the rectangular hole 4' as shown in Figure C, and then insert the four corners of the composite contact material 2 located on both the upper and lower sides of the base material 3 at a height of 0.531 J from above as shown in Figure D. , depth 0.
This protrusion 8 was twisted in three directions, and the composite contact material 2 was caulked to the base material 3 to obtain an electric contact 9.

[Conventional Example 1] As shown in Fig. 1a, a contact tape 1a made of Ag-Cd0 with a width of 1.61u and a thickness of 0.2ax is made with a width of 1.6u.
The composite contact strip material 1, which is bonded to the base strip material 1b made of Cu and has a height of 1.3 m and a height of 1.3 w, is cut into lengths of 1.6 mm to make a prismatic composite contact material 2 with a rectangular plane. The prismatic composite contact material 2 is then plastically worked into an octagonal prismatic composite contact material 2a with a side of 0.65 m as shown in Figure C. The cylindrical composite contact material 2b of the connection is plastically worked, and then the cylindrical composite contact material 2b has a diameter of 3 tm and a height of 0.
A rivet-shaped composite contact material 2d having an oval head 2C of 5 tur is plastically worked, and then this rivet-shaped composite contact material 2d is pre-width 5 ax as shown in Figure e.
A circular hole 4 with a diameter of 2.05 m is bored in the center of one side of the base material 3 made of thin bronze with a thickness of 0.1 w and a length of 9.5 u.
Insert the corresponding rear leg 20' into the base material 3 as shown in Figure f.
An electric contact was obtained by crimping it around the periphery of the circular hole 4 on the back side.

[Conventional Example 2] As shown in Fig. 2a, a contact wire 5 made of Ag-CdO with a diameter of 2 mm is cut to a length of 3M to make a cylindrical contact material 6, and then the contact of this cylinder is cut. The material 6 is processed into a header to produce a rivet-shaped contact material 7 having a disk-shaped head 7a as shown in Figure BK, and then the rivet-shaped contact material 7 is fed by a parts feeder, as shown in Figure C. As shown in Figure d, a circular hole 4 with a diameter of 2.05 mm was drilled in the center of one side of the base material 3 made of phosphor-raised copper with 5 widths, 0.1 run in thickness, and a length of 9.5 N. Then, the rear leg portion 7b was caulked to the periphery of the circular hole 40 on the back surface of the base material 3 to obtain an electric contact.

Therefore, we measured the manufacturing time per electric contact of these examples and conventional examples 1 and 2, calculated the manufacturing cost, measured the torsional strength (rotational torque) of the contact material, and When the degree of deformation was investigated, the results shown in the table below were obtained.

As is clear from the table above, the electrical contact of the example has a shorter production time per piece than the electrical contact of conventional example 1.2, and the production cost is significantly lower. It can be seen that the rolling strength is high and there is no deformation of the composite material.

According to the method of manufacturing an electrical contact of the present invention as detailed above, there is no need to mold the contact material into an IJ bed type, so it can be manufactured efficiently with fewer steps, and the manufacturing cost can be significantly reduced. . Furthermore, since the contact material is not formed into a rivet shape, no dents will be formed on the contact surface. Furthermore, even if the composite material is a thin plate with a thickness of around 0.18 mm, the contact material can be caulked without applying a large pressure to the composite material, so the composite material will hardly deform. This method has excellent effects such as the ability to securely and firmly attach the contact material to the composite material.

[Brief explanation of the drawing]

1A to 1F are process diagrams showing an example of a conventional method for manufacturing an electric contact; FIGS. 2A to 2D are process diagrams illustrating another example of a conventional method for manufacturing an electric contact; FIG. 3A d to d are process diagrams showing an example of the method for manufacturing an electric contact according to the present invention, and FIG. It is a diagram. l... Composite contact strip material, 2... Prismatic composite contact material, 3
...Base material, 4'...Square hole, 8...Protrusion, 9,9
′...Electric contact. Applicant Tanaka Kikinzoku Kogyo Co., Ltd.

Claims (1)

[Claims] Cut the contact band material to make a prismatic contact material, then insert this contact material into a square hole previously drilled in the composite material, and then insert the four corners of the contact material located on both the top and bottom of the composite material. Cut and bend the part,
A method for manufacturing an electric welder, comprising caulking the contact material to a base material.