| 摘要 |
PURPOSE:To wind a film exactly without being influenced by a variation of battery voltage, by constituting so that a turning switch positioned on a member which is interlocked and rotated with feed of a film is used as a motor shorting switch. CONSTITUTION:A motor shorting switch for shorting a motor and stopping it suddenly is constituted of a turning switch SW2 provided on a charge cam 200 which is interlocked and rotated with feed of a film, and a constant closed type shorting switch SW3 (230, 231) which is connected in series with said switch and also is controlled by a shutter setting plate 220, and when winding of a film is started and the charge cam 200 is rotated clockwise, after setting of the shutter setting plate 220 has been completed, a pawl 212 of a charge lever 211 has been fitted into the minimum diameter from the maximum diameter of the charge cam 200, and immediately after that, a connecting point (a) and (b) conduct (are shor-circuited), the motor is stopped suddenly and winding of a film of prescribed length is completed. |
