Spindle motor with the stator core supported by a resin member

Details Spindle motor with the stator core supported by a resin member Spindle motor with the stator core supported by a resin member

1992-03-18

1994-08-02

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 91, H02K 714, H02K 500

Patent

active

053348958

ABSTRACT:
A spindle motor having a housing, a hub member rotatable relative to the housing, a bearing disposed between the housing and the hub member, a rotor magnet mounted on the hub member, and a stator disposed in a facing relationship with the rotor magnet. The hub member includes a supporting wall portion, which cooperates with the stator to constitute an air seal structure. A magnetic fluid seal is provided at a position outward of the bearing, and includes a conductive plate for grounding static electricity. The bearing is comprised of a radial ball bearing, which includes certain improvement.

REFERENCES:
patent: 4647803 (1987-03-01), von der Heide et al.
patent: 4682065 (1987-07-01), English et al.
patent: 4760299 (1988-07-01), Dickie et al.
patent: 5045738 (1991-09-01), Hishida et al.
patent: 5177650 (1993-01-01), Jabbari et al.

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