| 摘要 |
PURPOSE:To realize the quick and assured wind-up of the film with a simple constitution, by connecting a reversal preventing member and a wind-up gear via a gap, and providing a backward play to a wind-up shaft and thus smmothly releasing a wind-up limiting member. CONSTITUTION:When the film is wound up one frame by a turn of a wind-up shaft 10 of one-way turning and via a wind-up spool 28, a wind-up limiting member 11 is hooked by a wind-up limiting lever 15. While the reversal is prevented for a reversal preventing member 30 provided at a taper part and a projection 29 of a windup gear 20 by a gap (t) and in the state under which the backward rotation is allowed by a minute extent. Thus the rebounding force of the gear 20 is well absorbed when the wind-up action is over. The member 11 is coupled to the gear 20 via a gap S and by means of a projected shaft 40 of a rotor 12 that is fitted into a groove 19a of a rotor 19, and a minute extent of backward play is provided to the member 11. Accordingly hook of the member 11 by the lever 15 during a wind-up action is smoothly released. Thus a quick and assured wind-up action is realized with a simple constitution. |
