Ultrasonic driving gear

Abstract

Abstract PURPOSE:To drive a driven body in normal and reverse rotation by making the longitudinal oscillation generated in a piezoelectric body oscillator coincide with the flexural oscillation inside the piezoelectric body oscillator. CONSTITUTION:The electrodes on both surfaces of a piezoelectric body oscillator 5 are composed of electrodes 6 to 7 in the center and electrodes 8 to 11 on both sides respectively. The electrodes on both sides 8 to 11 are bisected respectively. The piezoelectric body oscillator 5 is polarized from top to bottom. An ultrasonic driving gear is constituted in pressure-welding a rotor 12 as a driven body whose rotating shaft 13 is supported by a bearing to the end face 5a of the piezoelectric body oscillator 5. Elliptical oscillation in normal and reverse directions can thereby be generated to end faces 5a and 5b of the piezoelectric body oscillator 5 respectively. The rotor 12 can be rotated in the normal and reverse directions with this elliptic oscillation. As a result, the ultrasonic driving gear can be used for various purposes instead of an electromagnetic motor and a linear motor.

Inventors

• 👤 Keisuke Honda
• 👤 本多　敬介

Bibliographic Details