Patent ID: 9253378
Filing Date: 2016-02-02
CPC Classification: G03B,G05G,H01H,H04N

Claim Text:
1. A rotary operation unit comprising: a first base member formed with concave-convex portions at intervals of a predetermined angle; a rotary operation member formed with a receiving recess having an opening face; a ball member configured to be received in the receiving recess of the rotary operation member; an elastic member configured to be received in the receiving recess of the rotary operation member so as to urge the ball member; and a lid member configured to be attached to the rotary operation member to close the opening face of the receiving recess of the rotary operation member, wherein the rotary operation member includes a first shaft portion, wherein the first base member includes a first fitting portion into which the first shaft portion is fitted, wherein in a case where the first shaft portion is not fitted into the first fitting portion, the elastic member urges the ball member so that the ball member abuts an inside surface of the receiving recess, and wherein in a case where the first shaft portion is fitted into the first fitting portion, the concave-convex portions of the first base member is disposed between the ball member and the inside surface of the receiving recess so that the ball member abuts the concave-convex portions of the first base member.