| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a shutter opening/closing mechanism of a simple structure surely opening/closing a shutter by being operatively connected to pressing/twisting operations of a push button. Ž<P>SOLUTION: Locking holes 2b and 3a are formed oppositely to each other on circumferential surfaces of a push button 2 and a bezel 3 attached to a frame 1, respectively; thereafter a shutter member 7 is arranged inside the locking holes; an opening/closing guide 9 arranged on the circumference of the shutter member as an opening/closing mechanism of the shutter member 7 is fitted in a guide groove 2c formed on a circumferential wall of the push button 2, and axially movably guided and supported; thereafter the opening/closing guide is provided with a lock pin 11 spring-energized to project toward the frame; and the frame 1 is formed, oppositely to the lock pin, with a stopper part 1b engageably holding the shutter member to the closing position at a wait position of the push button 2, an opening guide cam part 1c moving the shutter member to the opening position in operating a push lock operation of the push button, and a restoration guide cam part 1d moving the shutter member from the opening position to the closing position by a turn reset operation of the push button. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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