Spindle motor

Details Spindle motor Spindle motor

2005-12-23

2009-06-02

Le, Dang D (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S216006

Reexamination Certificate

active

07541708

ABSTRACT:
A spindle motor including a rotor hub which is rotationally driven by a magnetic action of a rotational magnetic field generated when a current is applied to a wire wound around teeth of a stator core and a magnetic field of a magnet provided on a rotor. Herein, the stator core formed by laminating magnetic steel plates is mounted to an outer periphery of a supporting part of a rotation support shaft of the rotor hub, and the supporting part is made of sintered metal containing a ferromagnetic material. This spindle motor can suppress generation of vibration and noise even when it is reduced in size.

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patent: 4824122 (1989-04-01), Raj et al.
patent: 5653541 (1997-08-01), Ishizuka et al.
patent: 5746516 (1998-05-01), Miyasaka et al.
patent: 5998898 (1999-12-01), Fukutani et al.
patent: 2002-354742 (2002-12-01), None
patent: 2004-248337 (2004-09-01), None

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