| 摘要 |
PROBLEM TO BE SOLVED: To provide a focal plane shutter for a digital camera which excels in both of durability and cost performance and has constitution in which a set member and a restraining member are interlocked with each other. SOLUTION: A first front blade driving member 16 and a second front blade driving member 17 are coaxially attached, and a set spring 34 is laid on an arm 30 of a front blade. Drive springs 26 and 23 are laid on a rear blade driving member 19 and the driving member 17. In setting, the set member 27 rotates the driving members 17 and 19 counterclockwise to allow a first pressing surface 27e-1 of its recessed part 27e to press a projection part 28b, thereby the restraining member 28 is rotated counterclockwise. However, in the middle of such rotation, the set member reversely rotates the first driving member 16 by allowing a restraining part 28a to press a part to be restrained 16b. At a set position, the set member restrains the driving member 16 near an exposure operation terminating position, and in restoration to an initial position, the set member rotates the restraining member 28 clockwise by allowing the first pressing surface 27e-1 to press the projection part 28b just before stopping. COPYRIGHT: (C)2011,JPO&INPIT |
