Turntable-integrated spindle motor

Details Turntable-integrated spindle motor Turntable-integrated spindle motor

2005-02-08

2005-02-08

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156120

Reexamination Certificate

active

06853102

ABSTRACT:
A turntable-integrated spindle motor according to the present invention is constituted by a stator and a rotor. The rotor is constituted by a shaft4supported in a bearing in a cantilever support manner, a metallic rotor case1fixed to the shaft4by a boss3, and a magnet10fixed to an inner circumferential surface of the rotor case1. A plurality of projections2are formed integrally with the metallic rotor case so as to project from the side surface of the metallic rotor case, the projections being arranged along one circumferential line. The projections2perform a coming-off-prevention function by engaging with an engaging portion of a chassis15. The rotor case1also functions as a turntable. In the present invention, the motor and the turntable are combined integrally with each other to obtain improved characteristics as well as to reduce the overall height. Also, projections for preventing coming off are formed integrally with the metallic rotor case to ensure high strength of the projections.

REFERENCES:
patent: 5528092 (1996-06-01), Ohta
patent: 6534880 (2003-03-01), Sone et al.
patent: 6534889 (2003-03-01), Katagiri et al.
patent: 6737781 (2004-05-01), Osada et al.

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