Jtekt Corporation

Fumihiro Kawakami

Yuichi Toyama

Tomohiro Niwa

Hiroyuki Takahashi

Takashi Mitsuhara

Takaya Tanikawa

Yoshinobu Muramoto

Kosuke Tsukahara

Naoki Kinouchi

Hideaki Takamura

A wave washer is used for a shaft supporting device of an electric power steering system. The wave washer has an annular portion and six outward protrusions. The annular portion has first protrusions that protrude in a first axial direction and second protrusions that are formed so as to continuous with the first protrusions and that protrude in a second axial direction. Each outward protrusion protrudes from an outer periphery of the annular portion in a radially outward direction of the radial direction of the annular portion.

Wave washer, rotary shaft supporting device including the wave washer, and electric motor including the rotary shaft supporting device

A steering angle detection device includes: a shaft angle detector that detects a rotation angle of a shaft that transmits a rotation operation of a steering member to a steering mechanism; a motor angle detector that detects a rotation angle of a motor that applies a steering assist force to the steering mechanism; a steering angle calculation unit that calculates a steering angle on the basis of a combination of the rotation angle detected by the motor angle detector and the rotation angle detected by the shaft angle detector, and a temperature detector that detects an ambient temperature of the steering mechanism, wherein the steering angle calculation unit corrects the rotation angle detected by the motor angle detector or the shaft angle detector on the basis of the ambient temperature detected by the temperature detector and uses the corrected rotation angle to calculate the steering angle.

Steering angle detection device and method therefor

Growing community of inventors

Okazaki, Japan

Fumihiro Kawakami