| 摘要 |
PURPOSE:To obtain a strong torque by a small-sized motor by obtaining a slide torque in combination of vibrators of a standing wave of bending mode and a twisting mode. CONSTITUTION:A twisting coupler 3, a thickness vibrator 1 and a terminal board 1 are superposed on a twisting resonator 4, and the legs are coupled with a supporting cylinder 2 to form a ring-shaped vibrator. A twisting coupler for vibrating it is composed to radially attach a toothed plate on one side of a doughnut-shaped disc 4 in the shape that the disc 4 is equally divided into three sections. The positive or engative polarized surfaces of doughnut-shaped piezoelectric vibrators 6, 7 are opposed, a terminal board 81 is interposed therebetween a cap bolt 10 is inserted into a washer 9, and a cap bolt 10 is engaged with the threaded hole of the vibrator. A sinusoidal voltage is applied to lead wirings 11, 12 connected with the boards 81, 82. |
