ULTRASONIC MOTOR EQUIPPED WITH REDUCTION MECHANISM

PURPOSE:To constitute an ultrasonic motor equipped with a reduction mechanism small by making use of a ball bearing, which supports a rotary shaft as the reduction mechanism of the ultrasonic motor. CONSTITUTION:In an ultrasonic motor, the rotor 5, which rotates in a body with a rotor 3, is made in the shape of a cylinder, and it is supported rotatably with a ball bearing 7, and an output shaft 9 is pierced in the rotary shaft 5 so as to hold it rotatably, and one end of an output shaft 9 is coupled with the ball slip-out stopping member 7d of the ball bearing through a coupling material 11.