| 摘要 |
PURPOSE:To enhance the output and the efficiency of a vibration wave motor by using the peripheral surface of vibrator as a contacting surface of a moving elements in a motor for generating a traveling vibration wave at a ring-shaped vibrator with an electrostrictive element to drive the element, thereby utilizing the vibration of the direction perpendicular to the ring surface. CONSTITUTION:A polarized ring-shaped electrostrictive element 12 of a plurality of electrostrictive elements are bonded to the planar surface of a ring-shaped vibrator 31, a frequency voltage is applied to the element 12 to allow the vibrator 31 to generate a traveling vibration wave. A movable elememt 35 energized by a spring 20 is frictionally contacted with the peripheral surface of the inner or outer peripheral surface side of the vibrator 31, and rotatably driven by the traveling vibration wave. Thus, the element 35 is activated to be vibrated perpendicularly to the planar surface as compared with the case that the element 35 is contacted with the planner surface of the vibrator 31. Accordingly, a motor having a high output in a high efficiency can be obtained. |
