Length-adjustable steering shaft for a motor vehicle, and profiled sleeve for a steering shaft

Abstract

A length-adjustable steering shaft (1) for a motor vehicle, having an inner shaft part (2), which is held coaxially, and so as to be displaceable in a rotational axis direction (6), in an outer shaftpart (4), wherein the two shaft parts (2, 4), in cross section, have profiles which engage into one another for the purposes of transmitting torques, and on the inner shaft part (2), there is arrangeda profiled sleeve (3) on which the outer shaft part (4) is arranged in telescopic fashion, is improved with regard to simplified production in that the profiled sleeve (3), in a first end region (7)which in the assembled state surrounds a free end (10) of the inner shaft part (2), has at least one radially inwardly protruding stop (8) for the abutment against a face surface (11) of the inner shaft part (2) in one axial direction (6), and in that an end region (12) of the inner shaft part (2) is equipped with a radially outwardly protruding projection (13) for the abutment of the profiled sleeve (3) in the opposite axial direction (6). The invention furthermore encompasses a profiled sleeve (3) for the abovementioned steering shaft (1), which profiled sleeve, with regard to simplified assembly, has at least one radially inwardly protruding stop (8) in a first end region (7).

Description

technical field [0001] The invention relates to a longitudinally adjustable steering shaft for a motor vehicle having an inner shaft part coaxially received in an outer shaft part in a displaceable manner in the axial direction of the steering shaft, wherein the The two shaft parts comprise profiles interlocking in cross-section to transmit torque, and a profiled sleeve is provided between the inner shaft part and the outer shaft part. The invention also relates to a profiled sleeve for said steering shaft. Background technique [0002] DE 20 2010 017 747 U1 discloses a longitudinally adjustable steering axle for a motor vehicle. In order to prevent the profiled sleeve from slipping off in the axial direction on the inner shaft part, the inner shaft part is provided with two radially protruding latch lugs, which are arranged on both sides of the profiled sleeve and fix the profiled sleeve cylinder. The disadvantage of the described solution is that two latching lugs are r...

AI Technical Summary

Problems solved by technology

The disadvantage of the described solution is that two latching lugs are required to fix the profiled sleeve in the axial direction on the inner shaft part, and stress situations arise due to the different coefficients of thermal expansion of the profiled sleeve and the inner shaft part And thus make the special-shaped sleeve unfavorable deformation

Images