Patent ID: 8957331
Filing Date: 2015-02-17
Classification: H01H

Abstract:
1. An operation unit comprising: a rotating dial operated by being rotated about a predetermined reference axis; a rocking key which is disposed on an inside of the rotating dial, has a to-be-operated part formed with a to-be-pressed part operated by being pressed, and is operated by being inclined relative to the reference axis when the to-be-pressed part is pressed; and a push switch which outputs an operation signal by being pushed when the rocking key is operated, wherein the rocking key is inclined when the to-be-pressed part is operated by being pressed, in such a manner that a position on a roughly 180° opposite side of the reference axis from the to-be-pressed part serves as a fulcrum; the rotating dial is formed therein with an arrangement space extending in a circumferential direction around the reference axis; the rotating dial is formed with a gear portion extending in a circumferential direction around the reference axis; at least a part of an encoder is arranged in the arrangement space; and the encoder is provided with a rotating gear meshed with the gear portion.