Asmo Co., Ltd.

Atsushi Tariki

Masahiko Komoda

Yasushi Ueda

Shouichi Yoshikawa

Yoshiyuki Matsushita

Takayoshi Sasaki

Yoshiaki Matsuura

Kouji Niimi

Sumiyoshi Kamogawa

A core insulator fit on a stacked core is formed in a single unit which has tooth cover pieces and coil bobbin piece. The tooth cover pieces are formed to extend in the radial direction and be spaced apart equi-angularly for covering one axial side surface of the stacked core. The coil bobbin piece extends from the corresponding tooth cover pieces in the axial direction to cover the inner side surfaces of slots of the stacked core. The top ends of the coil bobbin piece protrude from the other axial side surface of the stacked core, when the core insulator is fit on the stacked core.

Rotary electric machine and manufacturing method therefor

An ultrasonic motor composed of a cylindrical stator having a vibration converting member and a cylindrical rotor slidably rotatable on the stator. Ultrasonic longitudinal vibration is generated in the stator by imposing high frequency voltage on piezoelectric elements disposed in the stator. A part of the longitudinal vibration is converted into twisting vibration by operation of slits formed on the vibration converting member. Both the longitudinal and twisting vibrations are compounded into elliptic vibration which drives the rotor. The vibration converting member is made by laminating a number of element plates each having cut-out portions or by combining several divided blocks. The slits are automatically formed on the vibration converting member without being machined, when the vibration converting member is formed by assembling the element plates or the divided blocks.

Ultrasonic motor driven by elliptic vibration

Growing community of inventors

Hamamatsu, Japan

Atsushi Tariki