发明授权
US08520335B2 Spindle motor including hydrodynamic bearing and storage disk drive including same
有权
主轴电动机包括流体动力轴承和包括其的存储盘驱动器
- 专利标题： Spindle motor including hydrodynamic bearing and storage disk drive including same
- 专利标题（中）： 主轴电动机包括流体动力轴承和包括其的存储盘驱动器
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申请号： US13198797申请日： 2011-08-05
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公开(公告)号： US08520335B2公开(公告)日： 2013-08-27
- 发明人: Junya Mizukami , Takayuki Oe , Yoichi Sekii , Naoki Sabashi , Takehito Tamaoka , Takashi Yamamoto , Kazunori Usui , Akira Mukai
- 申请人： Junya Mizukami , Takayuki Oe , Yoichi Sekii , Naoki Sabashi , Takehito Tamaoka , Takashi Yamamoto , Kazunori Usui , Akira Mukai
- 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： JP2010-178965 20100809; JP2011-046788 20110303; JP2011-164311 20110727
- 主分类号： G11B17/02
- IPC分类号： G11B17/02 ; H02K5/16
摘要：
In a motor, a stationary portion includes a shaft portion and an upper thrust portion arranged to define a single continuous monolithic member together with the shaft portion, and arranged to extend radially outward from an upper portion of the shaft portion. The shaft portion includes a female screw portion recessed axially downward from an upper end thereof. An upper end of the single continuous monolithic member defined by the shaft portion and the upper thrust portion includes an upper end annular surface arranged to extend radially outward from the female screw portion perpendicularly or substantially perpendicularly to the central axis. An outside diameter of the upper end annular surface is greater than a diameter of an outer circumferential surface of the shaft portion.
公开/授权文献
- US20120033330A1 SPINDLE MOTOR AND STORAGE DISK DRIVE 公开/授权日：2012-02-09
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