发明名称 |
Moving coil linear actuator with interleaved magnetic circuits |
摘要 |
According to a preferred embodiment of the present invention, a double-ended moving coil linear actuator is provided comprising a cylindrical core and a hollow shell disposed around the core to define an annular space between the inner wall of the shell and the outer wall of the core. A non-magnetic spacer is mounted in the annular space to divide the annular space into first and second annular cavities, each of the cavities having a closed end adjacent the spacer and an open end. A first set of magnets is mounted within the first annular cavity to define a first magnetic circuit. A second set of magnets is mounted within the second annular cavity to define a second magnetic circuit. The magnets of these two magnetic circuits are sized and arranged to define a third "interleaved" magnetic circuit which is created by the interaction of the first two circuits. Each of the first two magnetic circuits has a dual-winding coil assembly associated with it. The windings of the assembly are arranged to correspond to the arrangement of the magnets within the associated magnetic circuit.
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申请公布号 |
US4808955(A) |
申请公布日期 |
1989.02.28 |
申请号 |
US19870105400 |
申请日期 |
1987.10.05 |
申请人 |
BEI ELECTRONICS, INC. |
发明人 |
GODKIN, MIKHAIL;KIMBLE, JACK |
分类号 |
H01F7/06;(IPC1-7):H01F7/08 |
主分类号 |
H01F7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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