| 摘要 |
PROBLEM TO BE SOLVED: To constantly supply power to a power unit and lengthen the life of a motor by stabilizing contacts of a brush to the segment 8 of a commutator 7 in a DC coreless motor, by reducing abrasion of both contacts and by lengthening the life of the contacts. SOLUTION: A rivet-shaped slide-contact section made of sintered noble metal, carbon and the like is fixed to a slide-contacting part of each brush by caulking, brazing or welding, and the segment of the commutator is slide- contacted to the brush by the rivet-shaped slide-contacting section. Each brush and the slide-contacting part are slide-contacted to the segment of the commutator pressed by an elastic material means.
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