Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-10-29
1994-03-22
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, H02K 1300
Patent
active
052967743
ABSTRACT:
A miniature motor including a housing formed into a bottomed hollow cylindrical shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, an end plate engaged with an opening of the housing, and a rotor rotatably supported by bearings provided on the housing and the end plate. Power is fed to the motor by bringing a commutator constituting the rotor into sliding contact with brushes, in which a plurality of brush pieces branched from the brush are formed in such a manner that tangential lines formed by the brush pieces with respect to the commutator at predetermined contact points are made different at the tips of the brush pieces, and that the tips of brush pieces make different angles from the lines extended in the longitudinal direction of the brush pieces. The tips of brush pieces are bent to form a V shape in cross section. The tips of the brush pieces come in contact with the commutator at the opened legs of the V-shaped cross section.
REFERENCES:
patent: 3191084 (1965-06-01), Ooka
patent: 4319153 (1982-03-01), Mabuchi
patent: 4358699 (1982-11-01), Wilsdorf
patent: 4500804 (1985-02-01), Akiyama
patent: 4705978 (1987-11-01), Mabuchi
patent: 4896065 (1990-01-01), Tsuyama
Mabuchi Motor Co. Ltd.
Skudy R.
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