Steering transmission shaft with telescopic pre-limiting structure

Abstract

The invention discloses a retractable steering transmission shaft which comprises an outer shaft with an internal pore, an internal shaft matched with the internal pore of the outer shaft and a resilient clip which is arranged on the internal shaft, wherein, the external shaft and the internal shaft can slide axially without rotation, a small pin roll is arranged on the end surface of the internal shaft which is vertical to the axial direction, and a small pinhole is arranged on the small pin roll; a pinhole is arranged on the round thin wall of the external shaft. When the internal shaft fully retracts into the external shaft, the small pin roll is inserted in the pinhole, the small pinhole on the small pin roll exposes out completely, the resilient clip is inserted in the small pinhole for confining the axial sliding of the internal and external shafts; and the internal and external shafts can axially slide after the resilient clip is removed. The invention solves the axial motion problem of the retractable steering transmission shaft during the assembling and transmission processes and ensures no accidental collisions of the steering transmission shaft with other articles, especially no sample collisions or accidental damages on installing personnel during the steering system assembling process of a turnover head stock.

Description

technical field [0001] The invention belongs to the technical field of steering systems, and in particular relates to a telescopic steering transmission shaft with an axially telescopic limiting device. Background technique [0002] In the design process of the steering system, the steering drive shaft plays an extremely important role in the steering system as a bridge connecting the steering column and the steering gear. When the steering drive shaft transmits torque, it must be able to offset the position change between the steering column and the steering gear and the deformation of parts. Therefore, some vehicles, especially those whose steering wheel can be adjusted, generally design the steering drive shaft as a telescopic The structure of the truck, especially the truck with a reversible head, the pipe column must be telescopic and adjustable. [0003] The general telescopic steering transmission shaft does not have a device for telescopically limiting it, which cau...

AI Technical Summary

Problems solved by technology

[0003] The general telescopic steering transmission shaft does not have a device for telescopically limiting it, which causes some unfavorable problems, mainly in the process of transportation and assembly. Will cause the drive shaft to freely expand and contract

When the telescopic stroke of the transmission shaft is relatively large, it can also cause other problems. It is very obvious on the flip-type head. Long or shortened, it brings great inconvenience to the assembly process

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