Patent ID: 9158083
Filing Date: 2015-10-13
Classification: B06B,G02B,H02N

Abstract:
1. A driving apparatus, comprising: a member including a contact surface; a vibrator including at least one contact part that is brought into contact with the contact surface, and a piezoelectric element, wherein the vibrator is configured to move the member relatively to the vibrator by a vibration excited by the piezoelectric element; a pressing unit comprising an elastic member so as to apply an impressing force on the at least one contact part against the member; and a contact member configured to contact the pressing unit and being located between the pressing unit and the vibrator, wherein the contact member comprises an abutting part including a line contact part that receives the impressing force from the elastic member and comes into line contact with the pressing unit, the abutting part has a shape formed of a part of a cylinder, and a center axis of the cylinder is parallel to the at least one contact part and perpendicular to a driving direction of the member.