Spindle motor

Details Spindle motor Spindle motor

1994-02-10

1997-02-18

Laballe, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310216, 310209, 310254, H02K 714, H02K 100, H02K 114

Patent

active

056043899

ABSTRACT:
A spindle motor is disclosed. The spindle motor is provided with a magnet fitted to a rotor, and a stator core, around which coils are wound. Openings are provided in the base plate. A part of each coil is inserted into one of the openings. The thickness of the spindle motor is reduced by the thickness of the inserted coils. Supplementary members are fitted to the teeth of the stator core. The supplementary members protrude in a direction away from the base plate. The supplementary members reduce the axial component of the magnetic force acting between the stator core and the magnet.

REFERENCES:
patent: 3441760 (1969-04-01), Collens
patent: 4129796 (1978-12-01), Papst
patent: 4336470 (1982-06-01), Gutris
patent: 4417166 (1983-11-01), Perucchi et al.
patent: 4439703 (1984-03-01), Kohzai et al.
patent: 4626727 (1986-12-01), Janson
patent: 4902941 (1990-02-01), Merkle et al.
patent: 5132856 (1992-07-01), Takahashi
patent: 5170083 (1992-12-01), Burgbacher
patent: 5317225 (1994-05-01), Miyaji et al.
patent: 5319270 (1994-06-01), Tanaka et al.
patent: 5436517 (1995-07-01), Ogawa

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