发明授权
- 专利标题: Vibration sensing device having slidable conductive member
- 专利标题(中): 具有可滑动导电部件的振动检测装置
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申请号: US883591申请日: 1997-06-26
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公开(公告)号: US5895840A公开(公告)日: 1999-04-20
- 发明人: Hideaki Ohuchi , Yasunari Kato , Kuniaki Ueda
- 申请人: Hideaki Ohuchi , Yasunari Kato , Kuniaki Ueda
- 申请人地址: JPX Kariya
- 专利权人: Denso Corporation
- 当前专利权人: Denso Corporation
- 当前专利权人地址: JPX Kariya
- 优先权: JPX8-242912 19960913; JPX9-128544 19970519
- 主分类号: G01H11/08
- IPC分类号: G01H11/08 ; G01H17/00 ; G01L23/22 ; G01L23/00
摘要:
In a vibration sensing device for sensing a knocking vibration of an engine, a piezoelectric element is connected to an output terminal through a resilient conductive member. The resilient conductive member has a fixed base part, a sliding part at a position opposite to the fixed base part, and an intermediate V-shaped part resiliently contacting the piezoelectric element. When the sliding part moves slidingly in response to vibration of the piezoelectric element, the sliding friction force which exerts on the sliding part increases the spring constant of the resilient conductive member to be larger than the stationary spring constant of the same by hysteresis characteristics, thereby reducing damage to the piezoelectric element and enhancing reliability of the electric connection.
公开/授权文献
- US4734557A Deformable mirror 公开/授权日:1988-03-29