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Patent Searching and Data


Title:
BRUSH DEVICE FOR MINIATURE MOTOR
Document Type and Number:
Japanese Patent JPS61210853
Kind Code:
A
Abstract:
PURPOSE:To suppress the generation of electrical noise and relieve the getting out of position on a brush when it is fitted, by forming the sliding section of the tip of the brush which is bent in reverse V-shapes, and by bringing the sliding section in sliding contact with a commutator at the specified angle in the direction of the tangential line. CONSTITUTION:A brush sliding section 1 provided for the tip section of a brush arm 2 is formed by bending in a V shape. Between the brush sliding section 1 and the tangential line direction X of a commutator 3, an adequate angle thetais provided. The section of the V-shaped open legs of the brush sliding section 1 is arranged to come is sliding contact with the commutator 3. In this manner, the brush in contact with the commutator is stabilized, and so electrical noise can be reduced. Also, abrasion powder on the commutator surface can be pushed aside in a wide range, and so even if the brush slightly gets out of position when it is fitted, the brush in contact with the commutator can be kept in a good state.

Inventors:
MABUCHI RYUICHI
Application Number:
JP4874485A
Publication Date:
September 19, 1986
Filing Date:
March 12, 1985
Export Citation:
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Assignee:
MABUCHI MOTOR CO
International Classes:
H01R39/22; H01R39/18; H01R39/24; H01R39/39; H02K13/00; (IPC1-7): H01R39/24; H02K13/00
Domestic Patent References:
JPS4712573U1972-10-14
JPS569874B21981-03-04