| 摘要 |
PURPOSE:To reduce the force required for charging of a camera shutter, by charging plural driving parts in division and in time series. CONSTITUTION:A charging mechanism charges an open lever 2, a closure lever 3 and a control lever 6 that gives a mechanical control to the levers 2 and 3. This charging mechanism comprises a charging plate 11, motor 13 and gear trains 14, 15 and 16. A pin 14a of the gear 14 pushes a charging plate 11f to give an up-down reciprocating motion to the plate 11, and at the same time a pin 16a or 16b of the gear 16 changes successively the position of the plate 11 which is pulled by a spring 12. Thus a control plate, the lever 2 and the lever 3 are charged with the 1st, 2nd and 3rd reciprocating motions, respectively. As a result, the peak value is reduced for the necessary force, and at the same time the scale of a speed regulating mechanism is reduced. Therefore the working quantity is reduced. |
