JPS6233712B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a multi-contact sliding brush material.

Conventionally, to manufacture multi-contact sliding brush materials,
As shown in FIGS. 1 and 2, a base material 2 is set on the lower electrode 1 having a flat upper surface, a large number of contact wires 3 are arranged in parallel, and a wire bundle is placed on the base material 2.
A multi-contact sliding brush is formed by welding one end of the large number of contact wires 3 together by pressurizing and energizing the upper electrode 4, which has a lower surface that maintains parallelism with the upper surface of the lower electrode 1. I was making the material.

By the way, in the manufacturing method of such a multi-contact sliding brush material, when the upper electrode 4 is pressurized and energized, current concentration occurs in the center of a large number of contact wires 3, and it is difficult for current to flow through the contact wires 3 at both ends. It is something. In addition, heat dissipates at the welding point of each contact wire 3 in the vertical direction of the arrow and in the left and right direction of the arrow. The heat dissipation in the left and right direction of the arrow is compensated and the welding point generates heat by melting, but the heat dissipation in the left and right direction from the welding point of the contact wire 3 at both ends is due to the horizontal heat dissipation from the adjacent contact wire 3 only on one side. The other heat dissipates laterally and escapes, making it impossible to sufficiently concentrate the heat necessary for melting at the welding point. As a result, the welding strength of the contact wires 3 at both ends becomes lower than the welding strengths of the other contact wires 3.

The present invention was made in order to solve the problems of the conventional manufacturing method of multi-contact sliding brush materials, and it is possible to ensure that the welding strength of the contact wires at both ends is equal to the welding strength of other contact wires. It is an object of the present invention to provide a method for manufacturing a multi-contact sliding brush material that can be made uniform.

The method for manufacturing a multi-contact sliding brush material according to the present invention includes: as shown in FIGS. 3 and 4, a wire bundle in which a large number of contact wires 3 are arranged in parallel is brought into contact with a base material 2;
The roller electrode 5 is rotated in a direction perpendicular to the longitudinal direction of the contact wire 3 while being pressurized and energized between the electrode 1 having a flat end surface and the roller electrode 5, so that each of the wire bundles is This method is characterized in that the contact wire 3 is sequentially welded to the base material 2.

The roller electrode 5 may have a groove instead of being circular as shown.

In the method for manufacturing the multi-contact sliding brush material of the present invention, the reason why a large number of contact wires 3 are sequentially welded to the base material 2 by applying pressure and electricity through the rotation of the roller electrode 5 is that by moving the welding point, , each contact wire 3 can be reliably welded, and each contact wire 3 can be reliably welded.
It is possible to weld under pressure and current conditions according to the
This is because variations in welding strength can be eliminated.

Next, in order to clarify the effects of the method for manufacturing a multi-contact sliding brush material according to the present invention, specific examples and conventional examples thereof will be described.

〔Example〕

As shown in FIGS. 3 and 4, on the lower electrode 1 having a flat upper surface, rectangular holes 2b are sequentially drilled, leaving a rim 2a as shown in FIG.
30w/o made of Ni alloy, thickness 0.3mm, width 13mm,
At the same time as setting the strip-shaped base material 2,
Pd-30w/o Ag-14w/o Cu-10w/o
Au-10w/o Pt-1w/o A bundle of 23 contact wires 3 made of Zn alloy with a diameter of 0.07 mm (9 wires are shown for simplicity) arranged in parallel is placed on the strip-shaped base material 2. The contact wires 3 are placed in parallel, and each of the contact wires 3 is sequentially pressed against the base material 2 by applying pressure and electricity by rotating an upper roller electrode 5 with a diameter of 30 mm and a width of 5 mm from a direction perpendicular to the longitudinal direction of the contact wires 3. A multi-contact sliding brush material was manufactured by welding a progeexion to the progeexion 2c provided in the portion 2a.

[Conventional example]

As shown in FIGS. 1 and 2, a base material 2 and a contact wire 3 having the same material, size, and shape as in Example 1 are set on the lower electrode 1 having a flat upper surface, and the upper surface of the lower electrode 1 is A multi-contact sliding brush material was manufactured by welding all at once by applying pressure and electricity to the upper electrode 4, which has a lower surface that maintains parallelism.

Although a base material as shown in FIG. 5 was used in the embodiment, the base material is not limited to this, and a non-porous strip material or a cut piece thereof may be used.

However, when the welding strength of each contact wire 3 to the base material 2 was measured in the multi-contact sliding brush material of the example manufactured as described above and the multi-contact sliding brush material of the conventional example, it was found that the welding strength of each contact wire 3 to the base material 2 was In this case, the welding strength of all the contact wires 3 was 160 to 180 g/piece with no variation at all, whereas in the conventional method, the welding strength of the contact wires 3 at both ends was 10 to 150 g/piece, The welding strengths of the other contact wires 3 were 60 to 180 g/piece, and there was variation in the welding strength of the entire contact wires 3.

As detailed above, in the method for manufacturing the multi-contact sliding brush material according to the present invention, a large number of contact wires are sequentially welded to the base material by applying pressure and electricity through the rotation of the upper roller electrode. This has an excellent effect in that it is possible to manufacture a multi-contact sliding brush material that is reliably welded under pressure and energization conditions suitable for each contact wire and has no variation in the welding strength of the contact wires.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing a conventional method for manufacturing a multi-contact sliding brush material, Fig. 2 is a side view thereof, and Fig. 3
The figure is a schematic front view showing the method for manufacturing the multi-contact sliding brush material of the present invention, FIG. 4 is a side view thereof, and FIG. 5 is a plan view of the base material. 1... Lower electrode, 2... Base material, 3... Contact wire, 5
...Top roller electrode.

Claims (1)

[Claims] 1. A wire bundle in which a large number of contact wires are arranged in parallel is brought into contact with a base material, and both are placed between an electrode having a flat tip surface and a roller electrode, and the roller electrode is arranged in the longitudinal direction of the contact wire. A method for manufacturing a multi-contact sliding brush material, comprising sequentially welding each contact wire of the wire bundle to a base material by applying pressure and current while rotating from orthogonal directions.