发明授权
- 专利标题: Driving mechanism
- 专利标题(中): 驱动机制
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申请号: US20944申请日: 1998-02-09
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公开(公告)号: US6114799A公开(公告)日: 2000-09-05
- 发明人: Ryuichi Yoshida , Yasuhiro Okamoto
- 申请人: Ryuichi Yoshida , Yasuhiro Okamoto
- 申请人地址: JPX Osaka
- 专利权人: Minolta Co., Ltd.
- 当前专利权人: Minolta Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX9-026425 19970210; JPX9-026427 19970210
- 主分类号: H01L41/09
- IPC分类号: H01L41/09 ; H02N2/00
摘要:
A driving device with a long stroke and high speed driving ability. The device includes a base with a pair of parallel guides which are elastically installed thereon, and includes a drive unit in which there are arranged in series a driving member frictionally engaging the guides, a piezoelectric element for actuating the driving member in a direction in which the piezoelectric element expands and contracts, and a movable member, with a mass larger than the driving member, on which the driving member and the piezoelectric element are installed movably in the direction. When the piezoelectric element expands slowly with a pulse voltage applied thereto, the movable member moves with the driving member remaining stationary, relative to the guide. When the piezoelectric element contracts rapidly, the driving member slides relative to the guide with the movable member remaining stationary relative thereto. Thus, the drive unit is driven and moved along the guide.