| 摘要 |
PURPOSE:To stabilize the performance of a motor for a long time, by providing a hardening layer to the contact frictional section of an elastic body of an ultrasonic motor. CONSTITUTION:An ultrasonic motor is constituted by pressing to contact a moving body 3 to an elastic body 2 equipped with a piezoelectric substance 1. On this occasion, a hardening layer 4 is provided to the contact frictional surface with the moving body 3 of the elastic body 2. The moving body 3 is composed of a frictional contact section 5 made up of complex plastic material and a power transmission section 6 made up of hard material. By providing hardening layer 4, the abrasion of the elastic body 2 can almost be eliminated, and by driving an ultrasonic motor the deterioration of performance resulting from the wear powder can be suppressed. |
