Electric power steering apparatus
AssigneeKoyo Seiko Co., Ltd.
InventorsTakashi Tsutsui, Masayuki Watanabe
Life of this patent
Estimating the term…
Abstract
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.
Claims8
An electric power steering apparatus for transmitting rotating force of a steering assisting motor to a worm shaft having a worm and being rotatably supported in a gear housing through a bearing and to a steering shaft provided with a worm wheel meshing with said worm and for assisting steering, said apparatus comprising:
- a bearing case provided with a holding hole in which said bearing is fitted and held, and a mechanism for decentering said bearing toward said worm wheel;
- and
- an adjusting mechanism for adjusting, via the decentering mechanism, the worm shaft in a shaft length direction and a radial direction with respect to the worm wheel.
An electric power steering apparatus for transmitting rotating force of a steering assisting motor to a worm shaft having a worm and being rotatably supported in a gear housing through a bearing and to a steering shaft provided with a worm wheel meshing with said worm and for assisting steering, said apparatus comprising:
- a bearing case provided with a holding hole in which said bearing is fitted and held;
- a mechanism for decentering said bearing toward the worm wheel;
- and
- an adjusting mechanism including a bushing having an outer peripheral face, which is inclined toward the worm wheel with respect to a rotation center of the worm shaft, biased by an elastic member to axially or radially offset the worm toward the worm wheel.
Dependencies are inferred from the claim text.