Patent ID: 7232102

Claim:
A member tilting mechanism comprising: a first member including a concave spherical portion; a second member including a convex spherical portion; a third member including a pivot portion held between the concave spherical portion and the convex spherical portion; an elastic member configured to press one of the first member and the second member towards the other thereof so that the third member can tilt relative to the other of the first member and the second member; and a restricting member configured to restrict a deformation of the elastic member in an anti-pressing direction, wherein the elastic member comprises: a non-deflection portion that is fixed in the vicinity of a center of the tilt, and at least one deflection portion which extends from the non-deflection portion to press the one of the first member and the second member at an end portion thereof, wherein the restricting member is configured to abut with the end portion of the deflection portion so as to restrict a movement of the end portion in the anti-pressing direction.