| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a barrier mechanism capable of suppressing inclination of a driving lever and maintaining stable operation. <P>SOLUTION: A barrier mechanism comprises: a barrier substrate F2; a group of barrier blades rotatably provided in the barrier substrate F2; a first elastic member energizing the group of barrier blades in the closing direction; a second elastic member having higher elastic force than that of the first elastic member; a driving lever L1 rotatably attached to the barrier substrate F2 by a driving lever fitting pin S12 and energizing the group of barrier blades in the opening direction by turning in one direction by the elastic force of the second elastic member; and a pin P1 provided on the driving lever L1 and performing control such that the group of barrier blades is energized in the closing direction by the elastic force of the first elastic member, by bringing the driving lever L1 into contact with a cam member and turning the driving lever L1 in the inverse direction, then interrupting transmission of the elastic force of the second elastic member to the group of barrier blades. A leaf spring member 58 suppressing inclination of the driving lever L1 during turning is provided between the driving lever L1 and the driving lever fitting pin S12. <P>COPYRIGHT: (C)2012,JPO&INPIT |
