发明授权
- 专利标题: Non-contact type position sensor
- 专利标题(中): 非接触式位置传感器
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申请号: US10480745申请日: 2002-06-18
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公开(公告)号: US07012422B2公开(公告)日: 2006-03-14
- 发明人: Akira Matsuura , Yasunori Matsukawa , Shinjiro Ueda
- 申请人: Akira Matsuura , Yasunori Matsukawa , Shinjiro Ueda
- 申请人地址: JP Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: RatnerPrestia
- 优先权: JP2001-184502 20010619
- 国际申请: PCT/JP02/06078 WO 20020618
- 国际公布: WO02/103295 WO 20021227
- 主分类号: G01B7/30
- IPC分类号: G01B7/30
摘要:
A non-contact type position sensor enhanced in characteristics. A first magnetic element has a first magnetic detecting part at one end side thereof. A first magnet has one pole thereof fixed to the other side of the first magnetic element. A second magnetic element is positioned underneath the first magnetic element, and has a second magnetic detecting part at one end side thereof, and has the other pole of the first magnet at the other end side thereof. A third magnetic element is positioned substantially on circles concentric with the first magnetic element, and has a third magnetic detecting part at the one end side thereof. A second magnet has one pole fixed to the other end side of the third magnetic element. A fourth magnetic element is positioned underneath the third magnetic element, and has a fourth magnetic detecting part at one end side thereof, and also has the other pole of the second magnet at the other end side thereof. A magnetic detecting element is positioned between the first and second magnetic detecting parts, and is positioned between the third and fourth magnetic detecting parts.
公开/授权文献
- US20040155648A1 Non-contact type position sensor 公开/授权日:2004-08-12
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