| 摘要 |
PROBLEM TO BE SOLVED: To obtain surer electrical contituity by improving the contact characteristic between the brush of a brush device and a commutator. SOLUTION: In the brush device, the longitudinal direction of a coiled spring is arranged to align with the planar direction of a brush holder, the supporting shaft end of the brush base at the planar surface side is formed into a hollow cylindrical state; and an extended part of the other end side is fixed to the brush holder by insert molding. Further, a stepped part is provided on the supporting shaft end; and a cover plate is provided so as to coat the winding part of the coiled spring, as seen from a direction perpendicular to the surface direction of the brush holder, while the cover plate is stopped by this stepped part and the brush holder. The one end side of the supporting shaft is fixed to the flat surface of the cover plate, by spreading the hollow cylindrical end of the supporting shaft. COPYRIGHT: (C)2004,JPO&NCIPI
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