发明名称 |
Dynamic air pressure bearing |
摘要 |
Disclosed is the improvement in a dynamic air pressure bearing in which a rotor is supported at high speed in the non-contact state. In an optical deflector, a stationary shaft is planted at the center portion of a housing. A stator core is disposed on a stud. A magnet yoke is integrated with a sleeve rotated relative to the stationary shaft. The magnet yoke contains an inner magnet and an outer magnet. A rotary polygonal mirror is mounted on a flange fixed on the sleeve by means of a center screw and a mirror cap. The rotary polygonal mirror is rotated at high speed together with the sleeve relative to the stationary shaft, thus constituting a dynamic air pressure bearing between the shaft and the sleeve. The stationary shaft is constituted of a main body and a ring-like bearing member fitted in the main body. The bearing member is formed of a ceramic material and formed with grooves for generating dynamic air pressure. The sleeve is preferably constituted of a main body and a bearing member of ceramic.
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申请公布号 |
US5533813(A) |
申请公布日期 |
1996.07.09 |
申请号 |
US19940320271 |
申请日期 |
1994.10.11 |
申请人 |
FUJI XEROX CO., LTD. |
发明人 |
MAKINO, HIROSHI;SATA, TEIJI |
分类号 |
F16C17/02;F16C33/04;F16C33/10;G02B26/12;(IPC1-7):F16C33/20 |
主分类号 |
F16C17/02 |
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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