Spindle motor

Details Spindle motor Spindle motor

1993-07-21

1995-09-05

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310217, 310 51, H02K 714, H02K 708, H02K 106, H02K 524

Patent

active

054481198

ABSTRACT:
A spindle motor comprising a bracket, a shaft member secured to the bracket, a rotor rotatively supported by the shaft member while interposing bearings a rotor magnet fastened to the rotor and a stator disposed to confront the rotor magnet, wherein the rotor has a hub portion, to which a recording disk is fastened, and a rotor portion, to which the rotor magnet is fastened, the hub portion and the rotor portion being made to be interchangeable. The hub portion has a plurality of female screw holes for fastening the retaining cap, the number of a plurality of the female screw holes being different from the number of ball members of the ball bearing by at least two.

REFERENCES:
patent: 4658312 (1987-04-01), Elssser et al.
patent: 4730136 (1988-03-01), Muller
patent: 4888511 (1989-12-01), Aoki
patent: 4922406 (1990-05-01), Schuh
patent: 5030864 (1991-07-01), Van Hout et al.
patent: 5069515 (1991-12-01), Itami et al.
patent: 5134331 (1992-07-01), Miyaji et al.
patent: 5142178 (1992-08-01), Kloster et al.
patent: 5177650 (1993-01-01), Jabbari et al.

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