发明授权
- 专利标题： Low profile hydrodynamic motor having minimum leakage properties
- 专利标题（中）： 薄型流体动力马达具有最小的泄漏特性
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申请号： US122194申请日： 1993-09-15
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公开(公告)号： US5457588A公开(公告)日： 1995-10-10
- 发明人: Shinobu Hattori , Yasuhiro Higuchi , Yoshito Oku
- 申请人： Shinobu Hattori , Yasuhiro Higuchi , Yoshito Oku
- 申请人地址： JPX Kyoto
- 专利权人： Nippon Densan Corporation
- 当前专利权人： Nippon Densan Corporation
- 当前专利权人地址： JPX Kyoto
- 优先权： JPX4-252720 19920922; JPX4-350425 19921202; JPX4-351683 19921207
- 主分类号： G11B19/20
- IPC分类号： G11B19/20 ; G11B25/04 ; H02K5/124 ; H02K5/16 ; G11B17/02 ; H02K7/08
摘要：
A spindle motor comprises a rotary sleeve; a rotor hub which is integrally rotated with the rotary sleeve; a stationary sleeve; and a stationary support extending upwardly from the stationary part, the rotary sleeve being fitted onto the outer peripheral surface of the stationary support, and radial and thrust hydrodynamic bearings being provided on the relative sliding surfaces of both rotary sleeve and stationary support. A pair of annular grooves which partially overlap each other in the axial direction are peripherally provided on the rotary sleeve and stationary support, thereby providing a labyrinth chamber to suppress the outflow of the lubricant.
公开/授权文献
- US4765015A Floor sweeping blade device for surface cleaning machines 公开/授权日：1988-08-23
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