发明授权
- 专利标题： Disk system with sub-actuators for fine head displacement
- 专利标题（中）： 具有用于精头位移的副致动器的磁盘系统
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申请号： US543425申请日： 1990-06-26
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公开(公告)号： US5189578A公开(公告)日： 1993-02-23
- 发明人: Kenji Mori , Hiromu Hirai , Haruaki Otsuki , Tsuyoshi Takahashi , Jun Naruse , Yuji Nishimura , Muneo Kawamoto
- 申请人： Kenji Mori , Hiromu Hirai , Haruaki Otsuki , Tsuyoshi Takahashi , Jun Naruse , Yuji Nishimura , Muneo Kawamoto
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX1-164041 19890628
- 主分类号： G11B5/55
- IPC分类号： G11B5/55 ; G11B5/58 ; G11B7/085 ; G11B7/09 ; G11B7/12 ; G11B11/105 ; G11B19/20 ; G11B21/08 ; G11B21/10
摘要：
A magnetic disk system utilizes both of voice coil motor and a piezoelectric element provided on a head supporting arm to precisely position a head to a predetermined position on a disk. The piezoelectric element is built in the distal end portion of the head supporting arm and is restricted in respect of its movement by a resilient mechanism which has low rigidity in the driving direction of the piezoelectric element and high rigidity in the other directions. The resilient mechanism is formed by pairs of doubled parallel leaf springs so arranged that each pair is disposed on either side of the piezoelectric element.