发明名称 |
Hydrodynamic bearing assembly with single sided grooved counterplate |
摘要 |
<p>An improved spindle motor is disclosed which includes a rotating hub for supporting one or more discs (19) in a disc drive. Also disclosed is a hydrodynamic bearing system for supporting a hub for rotation, the bearing system includes a sleeve (54) and a shaft (50) fitted into an axial bore of the sleeve. The shaft and the sleeve rotate freely relative to one another, and together, define a journal bearing. The shaft supports an annular thrust plate (52). The thrust plate extends into a recess formed by an axial face stepped into the sleeve and a counterplate (58) parallel to the axial face and the thrust plate and attached to the sleeve. A first surface (72) of the thrust plate faces the axial face of the sleeve which has a groove pattern formed on it. A surface (68) of the counterplate faces an opposed, second surface of the thrust plate which has a groove pattern formed on it, to form an effective fluid pumping system in the hydrodynamic bearing. <IMAGE> <IMAGE></p> |
申请公布号 |
EP0769629(A2) |
申请公布日期 |
1997.04.23 |
申请号 |
EP19960307654 |
申请日期 |
1996.10.21 |
申请人 |
SEAGATE TECHNOLOGY, INC. |
发明人 |
HEINE, GUNTER;LEUTHOLD, HANS;NAGARATHNAM, LAKSHMAN;JENNINGS, DAVID;PARSONEAULT, NORBERT S. |
分类号 |
H02K5/167;F16C17/10;F16C33/10;G11B19/20;(IPC1-7):F16C33/10 |
主分类号 |
H02K5/167 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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