| 摘要 |
PROBLEM TO BE SOLVED: To provide a stable switch operation by preventing the rotation and looseness of an operation knob due to vibration or the like and the damage to an opening-closing switch by excessively large force and to display a switching mode by illumination. SOLUTION: Five opening-closing switches 6 are circumferentially disposed on the front face of a base 4 at nearly equal intervals. A tilting body 8 constituting a tilting shaft of the operation knob 5 is disposed in the base 4, and it tilt support part 56A is held by a stopper spring 10. The tilt direction of the operation knob 5 is restricted to five directions for disposing the switches 6 by a tilt direction restriction part 42 comprising star-shaped guide slots formed on the base 4 and a guide pin 57, and a switch pressing part 65 mounted in a housing 8 presses the elastic members 48 attached to the respective switches 6 and elastically deforms a certain amount. The rotation and the maximum tilt angle of the operation knob 5 are restricted by the engagement of a recessed part 34 formed in the base 4 with a rib 4 of the tilting body 8.
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