| 摘要 |
PURPOSE:To keep a position after winding always constant in a blind winding regulating means for a camera shutter by engaging front and back blind winding gears like a friction coupling system around to the winding drum shaft of each blind. CONSTITUTION:Friction shafts 28 are fixed on the shafts 16a, 17a of front and back blind winding drums 16, 17 respectively and front and back blind winding gears 23, 24 are coupled through the friction by springs 29, respectively. Since a notched gear 25 for transmitting rotation to these front and back blind winding gears is driven so that notched gear parts 26a, 26b are opposed to respective winding gears front and back blinds and respective drums are separated from the transmitting gears at the completion of winding, the notched gear 25 has a function to always fix the positions of the blind at the completion of winding together with winding amount regulating members 57, 58 fitted to respective drum shafts. |
