| 摘要 |
PROBLEM TO BE SOLVED: To make operating load almost uniform regardless of the pressing location. SOLUTION: An energizing force in upward direction is given to an operating body 68 by springs at a plurality of locations, and at the time of pressing of the operating body 68 by pushing a push button 72, the operating body 68 contacts nearly the center of the upper face of an pressing body, and the pressing body is moved downward coping with the upward energizing force. In this case, when the push button 72 is pressed, the fulcrum of rotation to the downward of the operating body 68 is changed corresponding to the pressing locations of the operating body, thereby the distance between the pressed portion of the operating body 68 and the fulcrum becomes almost same regardless of the pressing locations, and the operating load can be made almost uniform regardless of the pressing locations of the operating body 68. COPYRIGHT: (C)2006,JPO&NCIPI
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