| 摘要 |
Provided is an ultrasonic motor, comprising: a vibrator (109) including a piezoelectric element (103) and a contact surface (102b) to be brought into contact with a member to be driven (101), the vibrator (109) driving the member to be driven (101) by an ultrasonic vibration excited by the piezoelectric element (103); a holding part (104) configured to hold the vibrator (109); a pressurization unit (106) configured to apply a bias force for biasing the holding part (104) toward the member to be driven (101) so as to impress the contact surface (102b) against the member to be driven (101); and a fixing unit (105) configured to support the pressurization unit (106), in which the holding part (104) holds the vibrator (109) on both sides of the contact surface (102b) in a driving direction of the member to be driven(101). |
