发明授权
- 专利标题: Piezoelectric relay with tapered magnetic detent
- 专利标题(中): 压电继电器带锥形磁力制动器
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申请号: US448471申请日: 1982-12-15
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公开(公告)号: US4458171A公开(公告)日: 1984-07-03
- 发明人: Eric A. Kolm , Henry H. Kolm
- 申请人: Eric A. Kolm , Henry H. Kolm
- 申请人地址: MA Cambridge
- 专利权人: Piezo Electric Products, Inc.
- 当前专利权人: Piezo Electric Products, Inc.
- 当前专利权人地址: MA Cambridge
- 主分类号: H01H57/00
- IPC分类号: H01H57/00 ; H01L41/08
摘要:
A magnetically detented piezoelectric relay including a piezoelectric bender element having a fixed portion and a movable portion; means for providing an actuating voltage to deflect the bender element; first contact means mounted on the movable portion; second stationary contact means remote from the bender element and proximate the first contact means for selective engagement therewith in response to deflection of the bender element; and magnetic circuit means including a magnet; a first stationary pole member; and a second pole member on the movable portion for magnetically adhering the movable portion to the first pole member until the deflection force of the bender element exceeds the holding force of the magnetic circuit; one of the first and second pole members is convergingly tapered toward its face and has a face of reduced area relative to the area of the face of the other of the first and second pole members; at least one of the first and second pole members is movable toward and away from the other to adjust the length of the gap between them.