发明授权
- 专利标题: Hydrodynamic bearing device, method for manufacturing the same, spindle motor and recording and reproduction apparatus
- 专利标题(中): 流体动力轴承装置,其制造方法,主轴电动机和记录和再现装置
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申请号: US11443015申请日: 2006-05-31
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公开(公告)号: US07435001B2公开(公告)日: 2008-10-14
- 发明人: Naoshi Kainoh , Akihito Shirai , Shigeo Obata , Youichi Nishimoto , Junichi Nakamura , Tomohiro Haga
- 申请人: Naoshi Kainoh , Akihito Shirai , Shigeo Obata , Youichi Nishimoto , Junichi Nakamura , Tomohiro Haga
- 申请人地址: JP Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2005-373028 20051226
- 主分类号: F16C32/06
- IPC分类号: F16C32/06
摘要:
A hydrodynamic bearing device which can improve workability of injecting a lube repellant and effectively prevent leakage of a lubricant, a method for manufacturing the same, a spindle motor, and a recording and reproduction apparatus are provided. A hydrodynamic bearing device 4 includes a lube repellant 11a which is applied in a circular shape by a predetermined distance in a radial direction from a portion of an upper surface of a second thrust flange 41c where it is connected to a shaft 41 and a lube repellant 11b which is applied in a circular shape on an outer peripheral surface of the second thrust flange 41c below from an upper end in the radial direction by a predetermined distance. The lube repellant 11b is applied near the upper end portion in a gap formed between the outer peripheral surface of the second thrust flange 41c and an inner peripheral surface of an outer sleeve 44.
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