Miniature motor

Details Miniature motor Miniature motor

1996-05-28

1998-02-03

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 63, H02K 700, H02K 900

Patent

active

057148104

ABSTRACT:
A miniature motor comprising a housing formed into a bottomed hollow tubular shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor facing the permanent magnet and comprising an armature iron core having a coil wound thereon and a commutator, an end plate fitted to an open end of the housing and having brushes coming in sliding contact with the commutator and input terminals electrically connected to the brushes, and a cooling fan provided between the armature iron core of the rotor and the commutator; the rotor being rotatably supported by bearings provided on the bottom of the housing and the end plate, in which an integral cooling fan is formed by providing a plurality of fins at circumferentially equal intervals between first and second fan rings fitted to the ends of the commutator and the armature iron core, respectively, and a plurality of bosses are provided on the end face of the second fan ring.

REFERENCES:
patent: 4092556 (1978-05-01), Mabuchi
patent: 4467231 (1984-08-01), Biglino
patent: 4588911 (1986-05-01), Gold
patent: 4682065 (1987-07-01), English et al.
patent: 4896065 (1990-01-01), Tsuyama
patent: 5053657 (1991-10-01), Ikegami et al.
patent: 5296775 (1994-03-01), Cronin et al.

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