Ishikawa Prefecture

Nikko Company

Toyota Jidosha Kabushiki Kaisha

Toray Industries, Inc.

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Teijin Limited

Suzuki Motor Corporation

Tokyo Institute of Technology

Nagoya University

National University Corporation Tokai National Higher Education and Research System

Kenichi Hirosaki

Mikio Takimoto

Masahiro Takano

Takashi Yoshida

Kentaro Nakamura

Yoshihiro Iwano

Kazuaki Amaoka

Daisuke Mori

Takayuki Mori

Yuta Yoshida

Takuya Nagata

Wataru Okumura

Shou Makino

Satoru Ichimura

Masayuki Ishida

Hiroshi Kawai

A protrusion on a first member made of synthetic resin wherein a laser beam is applied to a side surface of the protrusion in a state in which a top surface of the protrusion of the first member is abutted against a second member made of synthetic resin, so as to melt at least the entire top surface of the protrusion and melt a portion of the second member in contact with the protrusion by heat of the melted top surface of the protrusion, followed by solidification of the melted portions, whereby the first member and the second member are welded together.

Method for welding synthetic resin member

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

A holding device for a piezoelectric vibrator including a support member () for separately accommodating a piezoelectric vibrator (), a first plate spring member () which extends from a proximal end fixedly bonded to one side of the support member () so as to sandwich opposing sides of the piezoelectric vibrator () and is folded back to be fixedly bonded to the piezoelectric vibrator, and a second plate spring member () which extends from a proximal end fixedly bonded to another side of the support member () so as to sandwich the opposing sides of the piezoelectric vibrator () and is folded back to be fixedly bonded to the piezoelectric vibrator. The first plate spring member () and the second plate spring member () are integrated at portions fixedly bonded to the piezoelectric vibrator ().

Apparatus for holding piezoelectric vibrator

Growing community of inventors

Kanazawa, Japan

Kenichi Hirosaki