发明授权
- 专利标题: Electromagnetic camera shutter control device
- 专利标题(中): 电磁相机快门控制装置
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申请号: US14621申请日: 1979-02-22
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公开(公告)号: US4269493A公开(公告)日: 1981-05-26
- 发明人: Ryoichi Suzuki , Takao Kinoshita , Yukio Ogawa , Takashi Uchiyama
- 申请人: Ryoichi Suzuki , Takao Kinoshita , Yukio Ogawa , Takashi Uchiyama
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX53/20117 19780223
- 主分类号: G03B9/10
- IPC分类号: G03B9/10 ; G03B9/40 ; G03B9/42 ; H01F7/08 ; H02K41/035 ; H02P25/02 ; G03B9/00 ; H01F7/16 ; H02K33/02 ; H02K41/02
摘要:
An electromagnetic shutter control device for controlling opening and closing operation of the shutter of a compact folding camera includes a bobbin having a magnetic winding therearound, a stationary permanent magnet over which the bobbin fits for magnetically actuated movement in a longitudinal direction, and guide elements for constraining movement of the bobbin in the longitudinal direction only. The permanent magnet acts to maintain the bobbin in a normal position at the terminal end of its movement coinciding with the closed position of the shutter. Energization of the magnetic winding actuates the bobbin in order to thereby actuate the shutter to the open position. The bobbin and the permanent magnet are particularly formed with a rectangular configuration so that the electromagnetic control device may be shaped to enhance and facilitate the compactness of a camera with which it is utilized.
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