| 摘要 |
PURPOSE:To eliminate a mechanical lag, by providing a winding cam coupling with film winding and a wind-stopping member, etc., movable between the 1st position where the said wind-stopping cam is hooked and the 2nd position where its hook is released. CONSTITUTION:Wind-stopping cam 9 is fitted to winding shaft 8, and wind-completion signal cam 10 is fitted also to winding shaft 8 together with coupling 57 under it. Wind-stopping click 12 has arms 12a-12d. Winding advances and right before the completion of the winding, arm 12b of wind-stopping click 12 meets wind-stopping cam 9 to rotate wind-stopping click 9 clockwise, so that arm 12a will enter the track of cam 9 and be hooked by stopping click 20. On the completion of the winding, switch SW7 turns off and a winding completion signal is generated. The constitution of said cam 9, wind stopping member 12, reset member 20, etc., can generate the winding start signal under no influence of a deficiency in operation of the following shutter blind and its bound. |
