| 摘要 |
PURPOSE:To miniaturize the title motor, and to reduct cost thereof by forming a gradient inside the side face of an annular stator, exciting amplitude by vibrations in the radial direction of the stator and curved progressive waves having amplitude in the axial direction and combining the two amplitude. CONSTITUTION:An oscillatory wave motor is composed of a stator 1, a piezoelectric element 5, a rotor 9, a cushion 11, a box body 12, a thrust bearing 13, a spring 15, etc. When a gradient is shaped to one end face of an annular resonator constituted of an elastic body, in which both end faces of the stator 1 are formed on surfaces vertical to the axial direction, and curved oscillations having amplitude in the axial direction are excited from the underside of an annular elastic body, oscillations having amplitude in the direction vertical to the direction that curved oscillations are transmitted are excited, using the neutral plane of the elastic body as a boundary in said stator 1. Oscillations in the circumferential direction are acquired by oscillations in the radial direction and progressive waves having amplitude parallel with the axial direction, and the two oscillations are combined, thus driving the pressure-contacted rotor 9. |
