| 摘要 |
PROBLEM TO BE SOLVED: To rarely break even by repeated strong contact to a power supply rail, reduce production cost, and suppress the generation of defective by laminating a plane brush body and an auxiliary brush shorter than the brush main body, having a bent part bending in the outside direction of the brush main body. SOLUTION: A power supply brush 1 is composed of a brush body made of a rectangular elastic metal plate, an auxiliary brush having a bent part 3a formed by bending the tip of an elastic metal plate, shorter than the brush body, and an auxiliary brush 4 made of a metal plate, and the three flat parts of them are laminated and fixed to a holding part 26 of an aging pallet 20 with fixing screws 27. Since the bent part 3a of the auxiliary brush 3 is protruded from the edge of the auxiliary brush 4 and positioned in almost the center of the brush main body 2, the brush body 2 comes in contact with a power supply rail 25, and is bent in a large radius of curvature in almost the central part. The bending stress of the brush body is dispersed, stress concentration is relaxed, and folding is prevented.
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