Patent ID: 8925938
Filing Date: 2015-01-06
Classification: B62D,B66F,F16H

Abstract:
1. A vehicle steering system, comprising: a steered shaft that moves in an axial direction of the steered shaft in response to an operation of a steering member; and a stopper that comes into contact with the steered shaft to restrict an amount of movement of the steered shaft in the axial direction, wherein the steered shaft has a first outer peripheral face, a second outer peripheral face that is larger in diameter than the first outer peripheral face and that is coaxial with the first outer peripheral face, and a stepped portion that connects the first outer peripheral face to the second outer peripheral face, and the stepped portion has a contact portion that faces the stopper in the axial direction, a first corner portion that has a concave curved sectional shape, and that connects the first outer peripheral face to an inner end of the contact portion, and a second corner portion that has a concave curved sectional shape with a curvature radius larger than a curvature radius of the first corner portion, that is formed in at least one of a position in front of a central axis of the steered shaft and a position behind the central axis in a longitudinal direction of a vehicle, the position being different from a position of the first corner portion in a circumferential direction of the steered shaft, and that connects the first outer peripheral face to the second outer peripheral face.