| 摘要 |
PROBLEM TO BE SOLVED: To provide an oscillatory wave drive unit which allows accurate positioning when a movable body is brought into contact with an oscillatory body by pressure using a coil spring and is excellent in responsivity and driving durability. SOLUTION: The oscillatory wave drive unit is so designed that the mobile body 8 is brought into contact with the oscillatory body 1 which generates oscillation by pressure from the spring force of the coil spring 13, and the movable body 8 is driven and caused to frictionize the oscillatory body 1 by the oscillation. The coil spring 13 is placed at the inner radius of the movable body 8 and a gear 9, and a spring bearing member made of polymeric material is placed between the abutting portions of the movable body 8 and the gear 9. |
