Steering device

Abstract

A steering device includes an outer column including fastening pieces formed to face each other at both sides, in the width direction, of a slot portion formed at either of a lower side or an upper side of an embracing body portion along an axial direction thereof, a fixed bracket clamping the outer column, a fastener that fastens the outer column and the fixed bracket, an inner column, and a pushing member having an expanding shaft portion. The two fastening pieces of the embracing body portion are connected by the fastener so that the two fastening pieces can be expanded and contracted, and the expanding shaft portion is elastically biased in an axial center direction of the outer column so as to abut on end zones of the slot portion and expand the two fastening pieces.

Description

technical field [0001] The present invention relates to a steering device. In a telescopic adjustment mechanism, during adjustment, fastening and release of an inner column by an outer column can be smoothly performed, and good telescopic adjustment can be performed. Background technique [0002] Conventionally, there are many steering devices equipped with tilting and telescopic mechanisms. Especially in a manual steering device, the outer column clamps the outer peripheral surface of the inner column from approximately both sides in the diameter direction, and the clamping pressure is increased by a fastener composed of a bolt shaft and an operating rod, and the inner column is opposed to the other side. Securely fastened to the outer columns. In addition, by loosening the fasteners, the part of the outer column clamping the inner column is opened, and at the same time the clamping pressure is weakened, the axial movement of the inner column relative to the outer column c...

AI Technical Summary

Problems solved by technology

[0010] When the fastening is released, the outer column 2 expands with the help of the restoring force of the spring member SPG, but the restoring force of the spring member SPG changes corresponding to the opening amount, and the restoring force will deviate when there is a difference in size, and it is difficult to maintain a certain level. Resilience

In addition, adjustment of the frictional force between the outer column 2 and the inner column 1 at the time of fastening and fixing becomes difficult due to variation in the restoring force of the spring member SPG due to the difference in dimension.

[0011] In this way, the friction force between the outer column 2 and the inner column 1 during the tightening and releasing during the telescopic operation can be adjusted within an appropriate range, and the lever operation load during the tightening can be kept within an appropriate range to ensure good performance. telescopic operability, which is difficult under the existing technology

In addition, since the spring member SPG is used as a separate part, the number of parts increases and the assemblability is poor

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