Patent ID: 8272473
Filing Date: 2012-09-25
Classification: B62D

Abstract:
1. A steering control system for a vehicle, comprising: an input shaft coupleable with a steering wheel of the vehicle; an output shaft coaxial with the input shaft and rotatable relative to the input shaft, wherein the output shaft transmits a steering force toward the steerable wheels of the vehicle; an input gear rotatable integrally with the input shaft; an output gear opposed to the input gear and rotatable integrally with the output shaft; an inner ring member rotatable about one portion of the output shaft that projects from one axial side of the output gear where the input gear is located, wherein the inner ring member has at least one primary hole; an, outer ring member placed radially outward of the inner ring member, wherein the outer ring member has at least one secondary hole; at least one pinion gear shaft member, extending in a respective direction that is generally perpendicular to a rotational axis of the input shaft and the output shaft, wherein said at least one pinion gear shaft member has an inner end part received in said at least one primary hole of the inner ring member, and an outer end part received in said at least one secondary hole of the outer ring member; at least one pinion gear, is rotatably supported by said at least one pinion gear shaft member at a location between the inner ring member and the outer ring member and meshed with the input gear and the output gear; a worm wheel fixed to an outer peripheral wall of the outer ring member; a worm meshed with the worm wheel; and a drive means for rotating the worm to control a transmission ratio between a rotational angle of the input shaft and a rotational angle of the output shaft.