| 摘要 |
PROBLEM TO BE SOLVED: To provide a shakiness preventing structure of a push button in which the center axis of the push button hardly slants from the central axis of a rotary encoder, and switching-on can be performed certainly. SOLUTION: The push button comprises a pushed part which is located at one end side in axial direction of a rotating part 330 of a rotary encoder 320, a switch pushing part 500 which is located with a spacing on the inner circumferential face of the rotating part 330 and extends in the axial direction to a switch from the center side of the pushed part, a plurality of shaking preventing parts 404 which extend to the inner circumferential face of the rotating part 330 from the switch pushing part 500 and contact with the inner circumferential face capable of sliding in the axial direction, and are located with a spacing mutually in the circumference direction, a fixing part 407 which is fixed to the inner circumferential face of the rotating part 330, and a flexible connecting part 497 which connects the switch pushing part 500 and the fixing part 407 and has flexibility. COPYRIGHT: (C)2011,JPO&INPIT
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