Koyo Seiko Company, Ltd.

Takashi Tsutsui

Masayuki Watanabe

Motoshi Kawamura

Masanori Kobayashi

Hiroaki Murakami

Etsuro Kitami

Tadasu Yamakawa

Teruo Tsutsui

Kouji Ogushi

Nobuhiro Ikeuchi

Takefumi Deyama

An electric power steering apparatus having a displacing mechanism in which a fitting hole potion is provided to a gear housing for fitting with and holding a bearing to which a worm shaft for transmitting rotating force of a steering assisting motor to a steering shaft provided with a worm wheel is fitted, the portion being formed of a pair of split members formed by splitting the portion into two, one split member being movable toward the other split member to adjust a distance between a shaft center of the worm shaft and a rotation center of the worm wheel.

Electric power steering apparatus

An electric power steering apparatus having a reduction mechanism in which an inner peripheral face of a fitting hole provided to a gear housing is formed into an inclined face inclined with respect to a worm shaft so as to fit with and hold a bearing to which a worm shaft for transmitting rotating force of a steering assisting motor to a steering shaft provided with a worm wheel, an inclined contact surface in contact with the inclined face is provided on an outer periphery of the bearing, and the inclined contact surface of the bearing is moved along the inclined face of the fitting hole to adjust a distance between a shaft center of the worm shaft and a rotation center of the worm wheel.

When a steering wheel is relatively quickly turned at the time of parking, before a first stopper mechanism located between an input shaft and an output shaft is operated, an elastic member attached to a movement end of a rack shaft comes into contact with a rack stopper of a rack housing , thereby absorbing the impact at the time of steering at parking. That is, the strike speed when contact portions of the first stopper mechanism are brought into contact with each other, is slowed down. Accordingly, the uncomfortable noise due to the strike sound is not given to the driver.

Power steering apparatus

An auto tensioner comprising a support shaft whose one end is fixed to a target attaching object and which has an arm support portion, an arm whose one end is rotatably supported by the arm support portion of the arm and which has a pulley support portion projecting fowardly and axially beyond the top end of the support shaft, a tension pulley which is rotatably supported by the pulley support portion of the arm and arranged at a position offset from the support shaft and a friction plate arranged between one end of the arm and the arm support portion of the support shaft and adapted to apply a rotary resistance to the arm. Further, the friction plate is provided with a load bearing member in its zone where a load resulting from the offset arrangement of the tension pulley is applied whereby the zone of the friction plate can have a sufficient degree of load-resistant property.

Auto tensioner

A hub unit having an outer ring member; an inner ring member a flange part, a large diameter part, and a small diameter part which has an outer circumference channel extending circumferentially in an end of the small diameter part and multiple notches which open the outer circumference channel to the end surface of the small diameter part; a sleeve which fits over the small diameter part of the inner ring member, one end of which contacts a shoulder between the large diameter part and the small diameter part and the other end of which overhangs the outer circumference channel; multiple rolling elements positioned at regular intervals between the outer ring member and the large diameter part of the inner ring member and between the outer ring member and the sleeve; and a ring-shaped bayonet member having multiple engaging parts which respectively project radially inward at positions corresponding to the positions of the notches. The engaging parts are inserted through the notches and fit within the outer circumference channel such that when these engaging parts are fit in the outer circumference channel, the bayonet member presses the end of the sleeve toward the shoulder, the bayonet member being thus pressed against the wall defining the outer circumference channel and locked.

Hub unit

A belt tensioner comprises a support fixed relative to a belt, a belt engagement device including a pulley being carried by the support and being movable relative to the support, a mechanical spring operatively associated with the support and the belt engagement device for urging the pulley against the belt to tension the belt, and a frictional dampening element operatively associated with the support and the belt engagement device to dampen the movement of the belt engagement device relative to the support in at least one direction of movement. The support being fixed to a fixed portion and including a shaft. The belt engagement device is engaged rotatably around the shaft. The dampening element includes one or more holes in the belt engagement device facing the support, a friction element is movably positioned in each hole and in contact with the surface of the support, and an urging element is positioned in each hole for urging the friction element toward the support to press the friction element toward the support.

Growing community of inventors

Kashiwara, Japan

Takashi Tsutsui