CPC H02N 2/0065 (2013.01) [H02N 2/002 (2013.01); H02N 2/006 (2013.01); H02N 2/0045 (2013.01); H02N 2/026 (2013.01)] | 16 Claims |
1. A vibration actuator comprising:
a vibration element including an electromechanical energy conversion element and an elastic member; and
a contact body in contact with the vibration element,
wherein the contact body has a direction in which the vibration element and the contact body move relative to each other as a longitudinal direction, and a square bar shape which is substantially uniform in width and thickness in the longitudinal direction, and includes a first section and a second section which are formed with respective R surfaces different in curvature radius on an edge extending in the longitudinal direction, in an area where the contact body performs frictional sliding on the vibration element.
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