JPS58188079A - Method of producing slide contact - 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 an improvement in a method of manufacturing a sliding contact.

Conventionally, in order to make a sliding contact, a large number of brush wires 1 are arranged in a row as shown in FIG. As shown in FIG. 1, a support plate 3 with a projection 2 provided at the center of one side is orthogonally projection welded, and then the base end of the brush wire l is directly attached to the tip of the spring base material 4 as shown in FIG. 1d or as shown in FIG. As shown in e, a sliding contact 5.5' is made by welding to the tip of the spring base material 4 via the support plate 3.

By the way, the sliding contacts 5, 5' manufactured by such a method have a sliding part 1a-1IX curved in an arc shape at the tip which varies in the vertical direction when the brush wire IK is in a stationary state with no negative load applied, as shown in FIG. 2aK. As shown in Fig. 2bK, this is a book that varies in the left and right direction. Even if a negative load is applied to the brush wire IK, some brush wires do not come into contact with the mating board.

The reason why the sliding portion 1a of the brush wire 1 fluctuates in the vertical direction) and in the left-right direction is because the brush wire 1 is attached directly or via the support plate 3 to the tip of the proximal tube spring base 4. This is because when welding, the brush wire 1 warps in any direction due to the effects of pressure, heat, etc. of the upper and lower electrodes, and due to the very slight inclination K.

The present invention has been made in order to solve the above-mentioned problems in the method of manufacturing sliding contacts, and aims to provide a method of manufacturing sliding contacts that does not cause variations in the sliding parts of a large number of brush wires. .

An example of the method for manufacturing a sliding contact of the present invention will be explained below with reference to FIGS. 31 to 3e. As shown in FIG. As shown in FIG. 3bK, a projection 2 is provided at the center of one side of a plate made of a material softer than the brush wire 1, for example, Cu-Ni 30, weight 1, and globules 6 which are lower than the projection 2 are provided in parallel on both sides of the projection 2. The support plates 7 made of K11 are arranged perpendicularly as shown in Fig. 3c, and are welded at the central projection 2, and the wire bundle is clamped by plastic deformation of the projection 6 on the K11fill side, and then as shown in Fig. 3d. As shown, the wire bundle is cut at the side edge of the support plate 7, and then the base end of the brush 80 obtained by cutting is welded to the spring base material 4 via the support plate 7, as shown in FIG. obtain.

Next, another example of the method for manufacturing a sliding contact of the present invention is shown in FIG. As shown in FIG. 4bK, a projection 2 is provided at the center of one side of a plate made of a material softer than the brush wire 1, for example, Cu-Ni3Q by weight, and a projection 6 lower than the projection 2 is provided on one side thereof. Support plates 7' provided in parallel are arranged orthogonally as shown in FIG. Next, this wire bundle is cut at the side edge of the support plate 7' as shown in FIG. 4d, and then cut as shown in FIG. 4e to obtain a brush 8'.
A sliding contact 9' is obtained by directly welding the base end to the spring base material 4.

In addition, when welding the base end of the brush to the spring base material 4 through the support plate 7 as shown in FIG. 4 may be used for projection welding.

Also, the projection 6 on one side or both sides of the support plate 7
may be provided inward instead of being provided on the edge as shown in the figure.

As described above, in the method for manufacturing a sliding contact of the present invention, a support plate 7 made of a material softer than the brush wires 1 is welded to a wire bundle in which a large number of brush wires 1 are aligned, and at the same time one of the supports is welded by the central projection 2. Since the low projection 6 on at least one side of the projection 2 plastically deforms itself along the brush wire material lkc without deforming the brush wire material 1 and bites into the valley between each brush wire material 1, a large number of brush wire material The wire bundle consisting of 10 brush wire rods 10 is sifted by the projection 6 and is fixed constant while maintaining its alignment shape m.Therefore, even if the 10 paddy bundles of brush wire rods 10 that are aligned and maintained in a large number of alignments are subsequently cut, In addition, when the cut brush is welded to the tip of the spring base material 4 directly or through the support plate 7, even if the brush wire l is affected by the pressure, heat, etc. of the upper and lower electrodes for welding, Upper and lower electrodes (brush wire I even if there is a slight inclination)
Since Fi does not warp, the sliding portion 1a at the tip of the brush wire 1 does not fluctuate in the vertical or horizontal direction.
are in contact with each other.

Furthermore, the sliding contact 9°9I made by the manufacturing method of the present invention is
At the base of the brush wire 1, where stress is concentrated during use, the root part is mechanically fixed by the shift lamp by the bite of the projection 6 as described above, so the strength is high (compared to conventional fixation by welding). , extremely stable contact force can be obtained.

As detailed above, according to the method of manufacturing a sliding contact of the present invention, the sliding parts of a large number of brush wires do not vary in the vertical and horizontal directions, and the sliding parts of all the brush wires are attached to the mating board during use. The use of brush wire rods, which ensure reliable contact and where stress is concentrated during use, has the excellent effect of providing a sliding contact that has high root strength and can maintain stable contact force.

[Brief explanation of the drawing]

Figures 1a to 1e are diagrams showing two steps of a conventional sliding contact manufacturing method, and Figures 2a and 2b are diagrams showing defective sliding contacts obtained by the conventional manufacturing method, respectively. , FIGS. 3a to 3e are diagrams showing the steps of an example of the method for producing a sliding contact according to the present invention, and FIGS. 4a to 4e are diagrams showing the steps of another example of the method for manufacturing a sliding contact according to the present invention. It is a diagram. 1...Brush wire, 2...-Glojection, 4...Spring base material, 6...Low glojection, 7゜7'... ...Support plate, 8,8
'...Brush, 9.9'...Sliding contact (
(Regarding the present invention) Applicant Tanaka Kinkyoku Kogyo Co., Ltd. Figure 1 (d) (e) Figure 2 Figure 3 (a), (b) Figure 4 (a) (b)

Claims (1)

[Claims] A wire bundle in which a large number of brush wires are aligned is provided with a projection lower than the above projection in parallel at a certain interval on at least one side of one side of a plate made of a material softer than the brush wires. Weld at least one support plate perpendicular to each other at the center projection, and clamp the wire bundle by plastic deformation of the lateral projections 1.
Next, the wire bundle is cut at the side edge of the support plate, and the base end of the cut brush is then welded to the tip of the spring base material either directly or via the support plate.