Invention Grant
- Patent Title: Bearing apparatus, spindle motor, and disk drive apparatus
- Patent Title (中): 轴承装置,主轴电机和磁盘驱动装置
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Application No.: US14024868Application Date: 2013-09-12
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Publication No.: US08967865B2Publication Date: 2015-03-03
- Inventor: Akihiro Kimura , Teiichi Hirono , Kunio Sakurada , Kyoko Horise
- Applicant: Nidec Corporation
- Applicant Address: JP Kyoto
- Assignee: Nidec Corporation
- Current Assignee: Nidec Corporation
- Current Assignee Address: JP Kyoto
- Agency: Keating & Bennett, LLP
- Priority: JP2009-141192 20090612
- Main IPC: F16C32/06
- IPC: F16C32/06 ; F16C17/10 ; F16C33/10 ; F16C33/74 ; G11B19/20 ; H02K5/167 ; H02K7/08

Abstract:
A bearing apparatus includes a first cup portion defining a portion of a stationary portion of a bearing apparatus includes a first circular plate portion and a first cylindrical portion projecting downward from an outer edge portion of the first circular plate portion. A rotating portion of the bearing apparatus includes an annular recessed portion arranged to accommodate at least a lower end portion of the first cylindrical portion. The stationary portion includes a second cup portion including a second circular plate portion arranged to extend radially outward from an outer circumferential surface of a stationary shaft below the first cup portion and a second cylindrical portion arranged to project upward from an outer edge portion of the second circular plate portion. One of the first and second cup portions is integral with the stationary shaft defining a single monolithic member, and the other is fixed to the stationary shaft.
Public/Granted literature
- US20140010065A1 BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPARATUS Public/Granted day:2014-01-09
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