Patent ID: 7944119

Claim:
A vibratory actuator, comprising: an actuator body, including a piezoelectric element, for outputting driving power by generating a plurality of vibrations having different vibration directions; a case for housing the actuator body; and a pressurizing unit including at least two pressurizing members, provided between the case and the actuator body, for applying compression force to the actuator body in advance at non-node portions of vibration of the actuator body from both sides in a vibration direction of the vibration, and a connection member for connecting the at least two pressurizing members with one another, wherein the connection member includes a body portion and a low stiffness portion having a lower stiffness than that of the body portion, and the pressurizing unit has larger outer dimensions than corresponding inner dimensions of the case, and at least the connection member is compression-deformed at the low stiffness portion when the pressurizing unit is provided between the case and the actuator body.