| 摘要 |
<P>PROBLEM TO BE SOLVED: To instantaneously change over a locked state and an unlocked state in an operation part. <P>SOLUTION: An operating button 101 is arranged and installed so as to be capable of being turned and operated between a locked position and an unlocked position, and a stopper member 103 is installed integrally with the operating button 101. When the operating button 101 is in the locked position, protrusions 115, 115 are engaged with grooves 113, 113, and a movement to a direction of case 100 of the operating button 101 is regulated. When the operating button 101 is turned by 90° so as to be in the unlocked position, the protrusions 115, 115 are engaged with grooves 114, 114 deeper than the grooves 113, 113, and the operating button 101 can be pressed and operated to the side of the case 100. <P>COPYRIGHT: (C)2003,JPO |
