Brush holder for dynamo-electric machine

Details Brush holder for dynamo-electric machine Brush holder for dynamo-electric machine

H - Electricity

01

R

310/125

H01R 39/38 (2006.01) H01R 39/46 (2006.01) H01R 39/40 (2006.01)

Patent

CA 1170306

ABSTRACT OF THE DISCLOSURE A brush holder for dynamo-electric machine has the following parts: a brush adapted to make sliding contact with the surface of a rotary collector; a stationary holder part fixed to the stationary part of the dynamo-electric machine opposing to the collector; and a detachable holder part detachably secured to the stationary holder part and adapted to hold the brush when separated from the stationary holder part, the detachable holder part being provided with a retainer adapted to clamp the brush when the detachable holder part is separated from the stationary holder part and to unclamp the brush when the same is attached to the stationary holder part, the brush clamping portion and therearound of the retainer being coated with a coating film of a material having a friction coefficient smaller than the material of the retainer. This arrangement obviates various unfavourable phenomenon such as jumping of the brush, sparking on the sliding surface, cracking in the brush and so forth.

402615

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