Patent ID: 9114828
Filing Date: 2015-08-25
Classification: B62D

Abstract:
1. A telescopic steering apparatus, comprising: a cylindrical steering column comprising an outer column, an inner diameter of at least one end portion in an axial direction of the steering column being able to expand or contract, and an inner column fitted inside and supported by an inner diameter side of the outer column so as to be able to displace in the axial direction, the steering column being constructed so as to be able to extend and contract; a displacement bracket fastened to one column of the outer column and the inner column that is located on a rear side, being displaced in the axial direction together with the one column as a steering wheel is moved forward or backward, and comprising a pair of held plate selections that have outside surfaces and a pair of long holes in a forward-backward direction that are formed in the held plate sections respectively and extend in the axial direction of the one column and have inner circumferential surfaces; a pair of elastic sleeves respectively mounted inside the long holes in the forward-backward direction; a steering shaft supported on an inner diameter side of the steering column so as to be able to rotate freely, the steering shaft having a portion that protrudes toward the rear side further than an opening on the rear side of the steering column, the steering wheel being fastened to the protruding portion; a support bracket supporting the steering column with respect to a vehicle body such that forward-backward position of the steering wheel can be adjusted, and comprising a pair of support plate portions that are located on respective sides in a width direction of the displacement bracket and that have outside surfaces, and a pair of through holes formed in parts of the support plate portions that are aligned with each other; an adjustment rod inserted in the width direction of the displacement bracket through the through holes and the elastic sleeves; a pair of pressure portions provided on respective end portions of the adjustment rod and facing the respective outside surfaces of the support plate portions; and an expansion and contraction mechanism expanding or contracting a space between inside surfaces of the support plate portions by expanding or contracting a space between the pressure portions, wherein the inner circumferential surfaces of the long holes in the forward-backward direction have stepped shaped sections such that opening areas of the long holes in the forward-backward direction become narrower going from the outside surfaces of the held plate sections toward inside in the width direction.