Patent ID: 8776942
Filing Date: 2014-07-15
Classification: B62D,F16H,Y10T

Abstract:
1. An electric power steering device adapted to apply a steering force to a steerable road-wheel, the electric power steering device comprising: a rack bar configured to transmit a steering manipulation of a steering wheel to the steerable road-wheel; a pinion shaft meshing with the rack bar; a worm wheel provided on the pinion shaft; a worm shaft meshing with the worm wheel; an electric motor provided on the worm shaft and configured to generate the steering force to be applied to the steerable road-wheel; a first housing accommodating at least a part of the rack bar and at least a part of the pinion shaft, wherein the first housing includes a first bolt boss formed with a though-hole; a second housing including wherein the female-threaded portion is formed such that a radially-innermost portion of an inner circumferential surface of the female-threaded portion with respect to a radial direction of the pinion shaft is located more inwardly with respect to the radial direction of the pinion shaft than an outer circumferential surface of the worm-wheel accommodating portion of the second housing.