Miniature motor

Details Miniature motor Miniature motor

1994-06-10

1997-05-27

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 71, 310 68C, 439441, H02K 1100, H01R 426, H01R 1120

Patent

active

056335423

ABSTRACT:
A miniature motor comprising a case having a positive temperature coefficient resistor incorporated therein and a permanent magnet fixedly fitted thereto, a rotor comprising an armature and a commutator, and a case cap having a pair of power-feeding brushes and a pair of input terminals electrically connected to the brushes, in which a lanced and raised lug or lanced and raised projections are provided at the tip of a retaining member made of an electrically conductive material, a retaining part is formed by bending a part or the whole of the tip of the retaining member toward the side of the lanced and raised lug or lanced and raised projections, the size of a gap between a projection or a lanced and raised lug provided on any one surface of a pair of input terminals, and the retaining part in free state and the lanced and raised lug is made smaller than the thickness of the positive temperature coefficient resistor being inserted therebetween so that the positive temperature coefficient resistor can be inserted into the gap, and the lanced and raised lug or lanced and raised projection can cut into the surface of the electrode of the positive temperature coefficient resistor, resisting the movement of the positive temperature coefficient resistor in the extracting direction.

REFERENCES:
patent: 4105276 (1978-08-01), Miller
patent: 4673232 (1987-06-01), Kubota et al.
patent: 5216305 (1993-06-01), Strobl
patent: 5218254 (1993-06-01), Someya
patent: 5281876 (1994-01-01), Sato
patent: 5294852 (1994-03-01), Straker
patent: 5382852 (1995-01-01), Yuhi et al.
patent: 5434460 (1995-07-01), Mabuchi et al.

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