Jtekt Corporation

Shinsuke Terada

Shiro Nakano

Naoki Maeda

Naotake Kanda

Shirou Nakano

Ken Matsubara

Yasuyuki Yoshii

Hideki Higashira

Kazuya Yoshioka

A controller applies slight rotational torque to a drive gear of a reduction mechanism also in a predetermined range in which a motor does not produce any steering operation assist force. That is, the motor is caused to produce slight rotational torque not enough to drive a driven gear, and the rotational torque direction is reversed under a given condition. Accordingly, a backlash between the drive gear and the driven gear is eliminated.

Electric power steering system

It is an object of the present invention to provide an electric power steering apparatus to be small and compact. The control housingis installed between the motor housingof the electric motorand the gear housingThe ECU controlling the electric motoris accommodated in the accommodating room S formed within the control housingThe motor housingaccommodates the bus barconnected to the coilof the statorand the resolverdetecting the rotational position of the rotorThe resolveris installed within the bus bar mounting memberin inner side of radial direction. The partitionis mounted on the control housingand the fixing screwis engaged with the insulating memberby the way that the fixing screwis inserted into insulating memberfrom its bottom surface side.

Electric power steering apparatus

A vehicle steering apparatus includes a steering member; a steering shaft connected to the steering member; a torque sensor for detecting a steering torque inputted into the steering member; and an electric motor for generating power that is transmitted to the steering shaft based on the steering torque detected by the torque sensor. The electric motor includes an annular rotor and an annular stator. The annular rotor includes an annular rotor core which coaxially surrounds the steering shaft and is rotatable together with a part of the steering shaft. An annular accommodation space is formed between an outer circumference of the steering shaft and an inner circumference of the annular rotor core, and at least a part of the torque sensor is disposed within the annular accommodation space.

Vehicle steering apparatus

Growing community of inventors

Ikoma, Japan

Shinsuke Terada