发明名称 |
SELF-ACTING AIR BEARING SPINDLE FOR DISK DRIVE |
摘要 |
A spindle assembly with air bearings for use in a hard disk storage device. The spindle assembly consists of a stationary shaft assembly and a rotating hub assembly that is supported in rotation by self-acting air bearings formed between adjacent axial and radial surfaces of the shaft assembly and the hub assembly. The shaft assembly includes a stationary shaft. A cylindrically hollow ceramic sleeve is fitted around the shaft. A double herringbone groove pattern is indented into the outer cylindrical surface of the sleeve. A further hollow ceramic cylinder fits over the sleeve such that a suitable air bearing can develop between the outer surface of the sleeve and an inner surface defined in the cylinder. Two disk-shaped ceramic thrust plates are fitted around the shaft, one on either side of the hollow sleeve. The innermost surfaces of the thrust plates are indented with a herringbone groove pattern such that a suitable air bearing can develop between the surface of the thrust plates and the flat end surfaces of the cylinder. A motor stator assembly is fitted to the end of the stationary shaft beyond one of the thrust plates, and a magnetic rotor assembly is fitted to the inside surface of a rotating aluminum hub adjacent to the stator.
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申请公布号 |
GB2231372(B) |
申请公布日期 |
1993.07.21 |
申请号 |
GB19890010940 |
申请日期 |
1989.05.12 |
申请人 |
* BREDPORT LIMITED |
发明人 |
NORMAN J * WHITE;RONALD W * WOOLLEY |
分类号 |
F16C33/04;F16C33/10;G11B19/20 |
主分类号 |
F16C33/04 |
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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