| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that an impact caused when a blade lever collides against a drive lever damages attraction surfaces of a yoke and an armature, and that attraction and separation performance degrades and operation accuracy of a shutter device may be deteriorated when the attraction surfaces of the yoke and the armature are damaged. <P>SOLUTION: In a state of a blade drive spring 14 overcharged by a move of a drive lever 11 beyond a position where a yoke 33 attracts an armature 12 by means of a second cam gear 22, a blade lever 15 does not abut with the drive lever 11 even if the blade lever 15 is driven by the energization force of a blade return spring 46 in a direction in which a first blade 41 and a second blade 42 are opened. The blade lever 15 abuts with the drive lever 11 from the time when the second cam gear 22 moves and the blade drive spring 14 is overcharged to the time when the yoke 33 attracts the armature 12 by electrically energizing the yoke 33. <P>COPYRIGHT: (C)2012,JPO&INPIT |
