Miniature motor

Details Miniature motor Miniature motor

1993-12-17

1995-03-21

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40MM, 310 89, 310 91, H02K 118

Patent

active

053999290

ABSTRACT:
A miniature motor comprising a case formed into a bottomed hollow tubular shape and having permanent magnets fixedly fitted to the inner circumferential surface thereof, a rotor consisting of an armature and a commutator, and a case cover engaged with an open end of the case and having brushes making sliding contact with the commutator, and input terminals electrically connected to the brushes, in which fixing ribs are provided on the inner circumferential surface of the case, extending along the axial direction of the case; the edges of the permanent magnets formed into an arc-segment cross-sectional shape being caused to make contact with the side edges of the fixing ribs to fixedly fit the permanent magnets to the inner circumferential surface of the case; projections formed integrally with the permanent magnets along the edges of the permanent magnets are provided facing the surface of the fixing ribs.

REFERENCES:
patent: 1039543 (1912-09-01), Kennington
patent: 4682066 (1987-07-01), Abbratozzato et al.
patent: 4827173 (1989-05-01), Corbach et al.
patent: 5216306 (1993-06-01), Nakazawa et al.
patent: 5276375 (1994-01-01), Hartel
British Search Report dated 3 Mar. 1994.

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