| 摘要 |
PURPOSE: To obtain high coupling of forces while reducing the size by an arrangement wherein a stator performs an oscillatory motion having a speed component substantially perpendicular to the displacement plane of a rotor and cooperates with means for transmitting that speed component to the rotary motion of the rotor. CONSTITUTION: The motion transmitting means 36 of a piezoelectric motor 1 is made of an elastically deformable member having a flexible tongue 38 projecting from a disc 34 toward the front face F2 of a stator 8 while inclining against a vertical axis extending in parallel with a rotary shaft X1. When a piezoelectric means 10 is excited with a power supply AL, an oscillation is transmitted to a disc 12 through direct planar contact and the stator 8 oscillates symmetrically to the axis as a whole. A large linear displacement at each point of the stator 8 caused by a flexure thus generated is converted through the elastically deformable member 36 formed of the flexible tongue 38, into a displacement of the rotor 30 on a displacement plane Pdm and an associated rotation. |
