| 摘要 |
PROBLEM TO BE SOLVED: To provide an image frame opening/closing device in which projection of blades from an opening is prevented. SOLUTION: A locking pawl 23 for locking a blade except the leading blade 10 with the longest moving distance, for example, a blade 9 located in the middle between the head and the tail in an expanded state is provided. Thus, overrun of the tip of the blade 9 is prevented and projection of a body part from the opening 3 is prevented by bend of the blade 9. The locking pawl 23 is integrally formed with a substrate 2 and has the shape that the body part becomes thin in order to alleviate an impact by conflict with the blade 9. In addition, the target blade 9 is constituted to be longer than other blades (especially, the blade 10) in this embodiment in order to prevent contact with the locking pawl 23 by the blade except the blade 9. Thus, this image frame opening/closing device is constituted so that the locking pawl 23 conflicts only with the blade 9 and movement of other blades is not hindered by the locking pawl 23. COPYRIGHT: (C)2005,JPO&NCIPI
|
