Toyoda Koki Kabushiki Kaisha

Tsuguhiro Somekawa

Yutaka Mori

Tsutomu Matsumoto

Kiyotaka Kato

Kyousuke Haga

An electric power steering apparatus comprises an input shaft transmitting a rotation from a steering wheel and an output shaft rotatably connected to the input shaft through a torsion bar relative to the input shaft. A drive motor is coaxially arranged relative to both of the input shaft and the output shaft. A reduction mechanism coaxially provided in a housing relative to the input and output shaft transmits a rotation of the drive motor to the output shaft so as to reduce the rotation of the drive motor at a constant reduction rate. A torque sensor detects a torque added to the torsion bar as a relative rotational displacement between the input shaft and the output shaft. The drive motor is rotationally controlled in accordance with the detected torque by the torque sensor.

Growing community of inventors

Kariya, Japan

Tsuguhiro Somekawa