| 摘要 |
PURPOSE:To hold simply opening state of a shutter by inhibiting shutter closing operation when an adjusting pawl to be locked which is provided on the prolongation of an array of pawls to be locked in an operating mechanism is locked by a stopping mechanism. CONSTITUTION:When an exposure controller is operated without connecting a power source, the 1st pawl 11ao of a stop cam 11 is locked by a stop pawl lever 14. A sector gear 13 which engages the top cam 11, on the other hand, has its end part 13c stopped in the movement path of an end part 2f of a shutter plate 2. Therefore, a driving lever 5 moves together with the shutter plate 2 until the movement of the shutter plate 2 is stopped by the end part 13c of the sector gear, and an interlocking lever 9 also continues to rotate clockwise. Consequently, the shutter driving lever 5 engages an opening/closing lever 4 continuously at its hook part 5a. Thus, shutter blades 6 and 7 are held in a maximum opening state until they are charged next. In this way, the opening state of the shutter is held easily. |
