发明授权
- 专利标题： Motor and disk drive apparatus
- 专利标题（中）： 电机和磁盘驱动装置
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申请号： US13613109申请日： 2012-09-13
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公开(公告)号： US08711514B2公开(公告)日： 2014-04-29
- 发明人: Shuji Iwasaki , Yoichi Sekii , Takehito Tamaoka , Hideki Nishimura , Kazuto Miyajima , Takuro Iguchi , Kazuhiro Sato , Takeyuki Shuto
- 申请人： Shuji Iwasaki , Yoichi Sekii , Takehito Tamaoka , Hideki Nishimura , Kazuto Miyajima , Takuro Iguchi , Kazuhiro Sato , Takeyuki Shuto
- 申请人地址： JP Kyoto
- 专利权人： Nidec Corporation
- 当前专利权人： Nidec Corporation
- 当前专利权人地址： JP Kyoto
- 代理机构： Keating & Bennett, LLP
- 优先权： JP2011-218231 20110930; JP2012-129864 20120607
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
A motor includes a shaft component including an inner shaft portion and an outer shaft portion. A radial gap is defined between a sleeve portion and the outer shaft portion. A radial dynamic pressure generating groove array is arranged on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper and lower radial dynamic pressure generating groove array. The inner shaft portion is fixed to the outer shaft portion in an interference fit. An axial range of a fixing region of the inner shaft portion and the outer shaft portion which is in the interference fit is included in a range between the upper and lower radial dynamic pressure generating groove array.
公开/授权文献
- US20130242429A1 MOTOR AND DISK DRIVE APPARATUS 公开/授权日：2013-09-19
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