Invention Grant
US08082561B2 Motor provided with chucking device and disk driving device equipped with the motor
有权
电机配有夹紧装置和装有电机的磁盘驱动装置
- Patent Title: Motor provided with chucking device and disk driving device equipped with the motor
- Patent Title (中): 电机配有夹紧装置和装有电机的磁盘驱动装置
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Application No.: US12252483Application Date: 2008-10-16
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Publication No.: US08082561B2Publication Date: 2011-12-20
- Inventor: Hitoshi Takaki , Shigeo Hayashi , Yusuke Iwai , Nobuaki Yasumoto , Yosuke Kawano
- Applicant: Hitoshi Takaki , Shigeo Hayashi , Yusuke Iwai , Nobuaki Yasumoto , Yosuke Kawano
- Applicant Address: JP Kyoto
- Assignee: Nidec Corporation
- Current Assignee: Nidec Corporation
- Current Assignee Address: JP Kyoto
- Agency: Keating & Bennett, LLP
- Priority: JP2007-269262 20071016
- Main IPC: G11B17/00
- IPC: G11B17/00

Abstract:
A motor includes a rotating body including a magnet, and a fixed body including a stator. The stator includes a stator core having an annular core back portion with an upper and a lower surface, and a plurality of circumferentially spaced-apart tooth portions extending from the core back portion in a direction away from the rotational axis, and a plurality of coils provided by winding a conductive wire around the tooth portions of the stator core with multiple turns. The rotor holder is arranged axially above the stator to cover the stator. Further, an annular or arc-shaped attracting magnet arranged to attract the rotor holder toward the stator is arranged radially inwardly of the core back portion, the attracting magnet having an upper surface axially facing toward the rotor holder, and a lower surface arranged axially below the upper surface of the core back portion of the stator core.
Public/Granted literature
- US20090096303A1 MOTOR PROVIDED WITH CHUCKING DEVICE AND DISK DRIVING DEVICE EQUIPPED WITH THE MOTOR Public/Granted day:2009-04-16
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