Jtekt Corporation

Denso Corporation

Keizo Arita

Naoki Nakane

Kouji Kitahata

Akio Osuka

Norio Nakatani

Kazuyuki Yoshida

Shingo Takayama

Naoki Uchida

Noriyuki Yahata

Takashi Kaoku

Taisuke Tujimoto

Yuuji Shimamoto

A torque detector () is provided with first and second units (). The first unit () includes a first synthetic resin () formed by molding a pair of magnetic flux collector rings (A,B). The second unit () includes a second synthetic resin () fixed to a magnetic shield plate (B) containing a metal; an insertion protruding part () arranged on the synthetic resin (); and magnetic sensors (A,B) held by the insertion protruding part (). The first synthetic resin () includes a receiving plate () whereupon a base (e) for receiving the magnetic shield plate (B) is formed. In a status where the receiving plate () exists between the magnetic shield plate (B) and an object () to be attached, both the magnetic shield plate (B) and the receiving plate () are fastened to the object () by a pair of fixing screws ().

Torque detector

A torque detecting apparatus includes two magnetism collecting rings cylindrical portions enclosing a magnetic circuit forming member provided on a rotating body and a magnetism sensitive device disposed between the protruding pieces protruding from parts of the cylindrical portions in an radially outward direction of the cylindrical portions. It includes a regulating body for regulating a relative position between the magnetism sensitive device and the protruding pieces respectively. This regulating body includes two inserting recesses into which each of protruding pieces is inserted respectively, each recess having a prismatic shape. It also has a connecting part connecting inner edges of apertures of the inserting recesses to each other. It also has a holding part holding the magnetism sensitive device between the inserting recesses.

Torque detecting apparatus and manufacturing method of same

An electric power steering apparatus is provided with a worm which is a driving gear interlocked with an electric motor for assisting steering, and a worm wheel which is a driven gear having an annular teeth body made of synthetic resin meshing with the worm and a metallic core body coupling the annular teeth body and is attached to the steering shaft. Protrusions are provided on a side surface of the annular teeth body in a face width direction at a plurality of circumferential positions from which a distance to a center of rotation is different from each other, and stirred lubricating fats and oils applied around the worm wheel. As a result, the lubricating fats and oils can be moved to between tooth surfaces of a meshing portion between the worm and worm wheel.

Noise reduction electric power steering apparatus

Growing community of inventors

Yamatokoriyama, Japan

Keizo Arita