Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-07-22
1993-12-14
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, 439733, H02K 1100
Patent
active
052705994
ABSTRACT:
A miniature motor including a case made of a metallic material and formed into a bottomed hollow cylindrical shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor comprising an armature and a commutator, a case cap fitted to an open end of the case and having brushes making sliding contact with the commutator, and terminals electrically connected to the brushes; the rotor being rotatably supported by bearings provided on the bottom of the case and the case cap; in which the input terminals are mounted on the case cap made of a resin material and fixedly fitted to the case cap by means of lanced and raised retainer pieces formed on the input terminals near the outer end face of the case cap is disclosed. Also disclosed is a method of making miniature motors comprising a process of press-fitting input terminals into a case cap, and a process of forming lanced and raised retainer pieces in the vicinity of the outer end face of the case cap.
REFERENCES:
patent: 3416122 (1968-12-01), Kinkaid
patent: 3596234 (1971-07-01), Sapienza
patent: 4220393 (1980-09-01), Ammon et al.
patent: 4857001 (1989-08-01), Nakano et al.
patent: 5071372 (1991-12-01), Viselli et al.
Aoyagi Norio
Koide Kouichi
Ohaku Yasuo
Mabuchi Motor Co. Ltd.
Stephan Steven L.
To E.
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