发明名称 |
Electromagnetically driven shutter device |
摘要 |
An electromagnetic device for driving a shutter includes a moving coil which is arranged to rotate in the magnetic field of a stator. A current supply arrangement for supplying exciting current to the moving coil includes a pair of insulated side pieces fixed about the rotational axis of the coil and connected to both terminals of the moving coil, and a pair of elastic rod-shaped brushes pressed against the side pieces on diametrically opposite sides of the rotational axis. A slide surface on each slide piece is provided with at a pair of flatened portions against which the elastic rod-shaped brushes are pressed so as to hold the shutter blades at a stop position.
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申请公布号 |
US4312583(A) |
申请公布日期 |
1982.01.26 |
申请号 |
US19800217038 |
申请日期 |
1980.12.16 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
OHNIWA, TAKEHIKO;SUGIURA, YOJI |
分类号 |
G03B7/00;G03B9/08;G03B9/10;(IPC1-7):G03B9/08 |
主分类号 |
G03B7/00 |
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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