| 摘要 |
PURPOSE:To strengthen the torque of an ultrasonic motor by strengthening a press-bonding force necessary to generate a rotary torque at the rotor in response to the strength of the vibration generated from a vibrator. CONSTITUTION:An ultrasonic motor has an ultrasonic rotary vibrator 1 made of piezoelectric ceramics, a ground electrode 2, a leaf spring 3, a disc rotor 5, and a pawl 51. The window of the rotor 5 is formed in a circular shape, the spring 3 is free at both ends with the anti-skid pawl 51 for preventing the rotor 5 from sliding. Thus, the effective value of the press-bonding diameter of the rotor 5 is increased according to the amplitude of the vibrator 1, and the press-bonding force necessary to generate a rotary force can be strengthened in response to the strength of the vibration. |
