发明授权
US5894378A Crash stop shock ring for the protection of disk drive motor bearings
失效
用于保护磁盘驱动电机轴承的碰撞停止冲击环
- 专利标题: Crash stop shock ring for the protection of disk drive motor bearings
- 专利标题(中): 用于保护磁盘驱动电机轴承的碰撞停止冲击环
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申请号: US977908申请日: 1997-11-25
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公开(公告)号: US5894378A公开(公告)日: 1999-04-13
- 发明人: Akihiko Aoyagi , Zine-Eddine Boutaghou , Vijayeshwar Das Khanna , Suresh Kumar , Muthuthamby Sri-Jayantha
- 申请人: Akihiko Aoyagi , Zine-Eddine Boutaghou , Vijayeshwar Das Khanna , Suresh Kumar , Muthuthamby Sri-Jayantha
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: G11B33/12
- IPC分类号: G11B33/12 ; F16C19/54 ; F16C39/02 ; G11B19/20 ; G11B25/04 ; G11B17/28 ; H02K7/102
摘要:
A technique for preventing damage to ball bearings in small form factor devices where the drive motor has at least one piezoelectric crash stop ring disposed about the shaft and inside the rotor of the motor. The crash stop ring must be dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.