Patent ID: 9256046
Filing Date: 2016-02-09
CPC Classification: G02B,G03B,H02K,H02N

Claim Text:
1. A vibration actuator, comprising: a vibrating element that is excited by an electromechanical conversion element; a rotor portion that is relatively rotated by way of vibration of the vibrating element; a pressing portion that generates a pressure force in a thrust direction between the vibrating element and the rotor portion; a hollow rotor holder that restricts a position of the rotor portion in the thrust direction and a radial direction; and a bearing member of which a rotation axis is coaxial with a rotation axis of the vibrating element, wherein the rotor holder includes: an outer circumference flange that is provided on an outer circumference thereof to receive the pressure force from the rotor portion; and an inner circumference flange that is provided on an inner circumference thereof to serve as a first track face of the bearing member.