Spindle motor and disk drive device using the same

Details Spindle motor and disk drive device using the same Spindle motor and disk drive device using the same

2006-05-19

2010-02-16

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06700R, C360S098070, C360S099010, C360S099040, C360S099080

Reexamination Certificate

active

07663280

ABSTRACT:
A spindle motor and a disk drive device are provided that have a high operation efficiency of the motor, that does not leak oil, and that has an improved stability by decreasing a runout component in the direction of the rotation axis. The spindle motor includes a rotor hub (20) composed of a disk-like flange (201) and a cylinder-shaped shaft (203); a ring-shaped rotating magnet (16) fastened on one main surface of the flange (201); an armature (14) facing the rotating magnet (16); a sleeve (80) rotatably supporting the shaft (203); and a chassis (15) fixing the armature (14) and the sleeve (80). The flange (201) and the shaft (203) are integrally formed with magnetic material; a protrusion is not provided between a mounting surface (204) for mounting the rotating magnet (16) thereon and a counter-face surface (205) facing the end surface of the sleeve; and the mounting surface (204) and the counter-face surface (205) are orthogonal to the direction of the central axis (A-A′) of the shaft (203), and in a level plane; or the mounting surface (204) is recessed stepwise from the counter-face surface (205) toward the disk mounting portion (202).

REFERENCES:
patent: 5914832 (1999-06-01), Teshima
patent: 6316857 (2001-11-01), Jeong
patent: 6364532 (2002-04-01), Yoshikawa et al.
patent: 6712513 (2004-03-01), Tanaka et al.
patent: 6717310 (2004-04-01), Yoshikawa et al.
patent: 6828709 (2004-12-01), Grantz et al.
patent: 2004/0091188 (2004-05-01), Aiello et al.
patent: 2004/0208404 (2004-10-01), Dittmer et al.
patent: 2004/0223673 (2004-11-01), Tiller et al.
patent: 2005/0286820 (2005-12-01), Grantz et al.
patent: 6-180435 (1994-06-01), None
patent: 10-080091 (1998-03-01), None
patent: 11-025062 (1999-01-01), None
patent: 2002-058186 (2002-02-01), None
patent: 2003-088042 (2003-03-01), None
patent: 2003-264954 (2003-09-01), None
patent: 2004-248344 (2004-09-01), None
patent: 2004-316680 (2004-11-01), None
International Search Report issued Jul. 25, 2006 in the International (PCT) Application of which the present application is the U.S. National Stage.

Affiliated with

Also associated with

Rating

Spindle motor and disk drive device using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spindle motor and disk drive device using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spindle motor and disk drive device using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4183098