Spindle motor and disk drive device

Details Spindle motor and disk drive device Spindle motor and disk drive device

2007-10-02

2007-10-02

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S051000, C310S090000, C310S090500

Reexamination Certificate

active

11243609

ABSTRACT:
A simple construction causes a spindle motor rotor to be eccentric in a pickup moving direction and improves axial run-out caused by clearance between a rotating shaft and a bearing. A magnetic cap is attached to an end of a bearing of a spindle motor so as to cover an end face. A ceiling of the magnetic cap is an annular magnetic material in which a lid and opposing face protruding therefrom are continuous, and the opposing face works with an annular magnet attached to the rotor to generate an attraction force that causes the rotor to be eccentric. The opposing face is formed so as to be linearly symmetrical with respect to the axis line, which is the pickup movement line.

REFERENCES:
patent: 4900958 (1990-02-01), Kitahara et al.
patent: 5300849 (1994-04-01), Elsasser
patent: 5610462 (1997-03-01), Takahashi
patent: 5623382 (1997-04-01), Moritan et al.
patent: 5748406 (1998-05-01), Morimoto et al.
patent: 6291916 (2001-09-01), Huang et al.
patent: 6661131 (2003-12-01), Fukutani
patent: 6738340 (2004-05-01), Hopf et al.
patent: 6911749 (2005-06-01), Ho et al.
patent: 6954017 (2005-10-01), Takahashi et al.
patent: 6982505 (2006-01-01), Horng et al.
patent: 7002272 (2006-02-01), Tsuchiya
patent: 2002/0074879 (2002-06-01), Jun
patent: 2004/0245873 (2004-12-01), Lu et al.
patent: 9-74705 (1997-03-01), None
patent: 2004-7905 (2004-01-01), None

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