US 2012/0266715 A1Published application

Steering Device

AssigneeNsk Ltd.

InventorsShinji Okada, Yuuichi Tomaru

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Abstract

A steering device facilitates the assembling of a tilt lock mechanism that elastically supports movement of a movable tilt lock gear to a stationary cam in a tilt direction by a spring. The stationary cam has both characteristics of durability and an impact reduction capability. When a cylindrical part of a tilt stopper has been inserted into a through hole, the cylindrical part is enlarged in diameter, and engagement surfaces of engagement projections are engaged with an end surface of an inclined cam surface side of a stationary cam. A right end surface of a flange part of the tilt stopper is abutted against an end surface of a movable tilt lock gear. The movable tilt lock gear, a wire spring, and the stationary cam are integrated by the tilt stopper, and those four parts can be prevented from being dispersed during transportation. As a result, the assembling time can be reduced. Also, because those four parts are not displaced in the axial direction, the axial positions of the wire spring and the stationary cam can be held at a fixed position.

Claims5

Dependent claims

A steering device, comprising:

a vehicle body attachment bracket that can be attached to a vehicle body;
a column that is supported by the vehicle body attachment bracket so that a tilt position is adjustable, and rotatably pivotally supports a steering shaft equipped with a steering wheel;
a fastening rod that is inserted into a tilt adjustment slender groove formed in the vehicle body attachment bracket and the column in order to fasten the column to the vehicle body attachment bracket at a desired tilt position;
a stationary cam that is supported by one end of the fastening rod, and presses one side of the vehicle body attachment bracket toward the column;
a movable cam that is rotatably supported by one end of the fastening rod together with an operating lever so as to face the stationary cam;
a cam surface that is disposed on respective surfaces that face the stationary cam and the movable cam, and presses the movable cam toward the stationary cam relatively in an axial direction;
a locking unit that is formed in the stationary cam in order to disable the stationary cam to be relatively rotated with respect to the movable cam, fitted into the tilt adjustment slender groove, and can slide along the tilt adjustment slender groove when adjusting the tilt position of the column;
a stationary tilt lock gear formed on one side of the vehicle body attachment bracket;
a movable tilt lock gear that rotates in synchronism with rotating operation of the operating lever, can be engaged with the stationary tile lock gear, and is fitted onto the stationary cam so as to be movable in a tilt direction;
a spring that is inserted between the movable tilt lock gear and the stationary cam, and elastically supports movement of the movable tilt lock gear to the stationary cam in the tilt direction;
and
a tilt stopper that holds the stationary cam, the movable tilt lock gear, and the spring integrally.

9 more elements

Dependencies are inferred from the claim text.