Tokyo Institute of Technology

Nikko Company

Ishikawa Prefecture

Satoru Ichimura

Kentaro Nakamura

Mikio Takimoto

Masahiro Takano

Kenichi Hirosaki

Takashi Yoshida

Yuta Yoshida

Takuya Nagata

Shou Makino

Masayuki Ishida

Hiroshi Kawai

Electrodes (), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element () in which the strain in the natural mode of vibration is large. The electrodes () which excite a bending vibration are disposed in areas in which the strain in the bending natural mode is at least a predetermined value, and the outline curved sections of the electrodes () are shaped so as to follow along strain contours (), and the electrode () which excites a stretching vibration is disposed in an area in which the strain in the stretching natural mode is at least a predetermined value, thus providing a transducer for an ultrasonic motor which aims to reduce transducer loss (increasing vibration efficiency), and improve transducer durability and reliability.

Transducer for ultrasonic motor

Growing community of inventors

Hahusan, Japan

Satoru Ichimura