Automobile steering column capable of avoiding axial adjustment limiting and crumple interference

Abstract

The invention discloses an automobile steering column capable of avoiding axial adjustment limiting and crumple interference, which comprises an upper tubular column body and a lower tubular column body which are sleeved with each other and can slide relatively, and further comprises an adjustment mechanism for adjusting the axial position of the upper tubular column body, a crumple mechanism for collision crumple protection and an adjustment limiting mechanism, and the adjustment limiting mechanism comprises a limiting pin and a limiting long groove formed in the upper pipe column body. The limiting pin shaft is linked with the adjusting mechanism, so that the limiting pin shaft extends into the limiting long groove when the axial position of the upper tubular column body is adjustable when the adjusting mechanism is in a relaxed state, and the limiting pin shaft retreats from the limiting long groove when the axial position of the upper tubular column body is not adjustable when the adjusting mechanism is in a locked state. The limiting pin shaft is linked with the adjusting mechanism, so that the limiting pin shaft only acts in the adjusting process, and therefore when an automobile collides and the steering column needs to collapse, the limiting pin shaft cannot hinder collapse of the steering column, and normal operation of the collapse function is guaranteed.

Description

technical field [0001] The invention relates to an automobile steering column, in particular to an automobile steering column capable of avoiding the interference of an axial adjustment limit mechanism and a collapse protection function. Background technique [0002] Most existing automobile steering columns are provided with an axial adjustment function for adjusting the length of the steering column so as to adapt to drivers with different body shapes and driving habits. The steering column cannot be adjusted without limit, so a limit device is generally designed to limit the maximum adjustment amount. At the same time, the existing automobile steering column is also designed with a collision protection function, aiming at the steering wheel collapsing backward when an accident occurs, so as to reduce the damage to the driver. [0003] However, the axial adjustment limiting device of the existing automobile steering column is not separated from the collision crumple prote...

AI Technical Summary

Problems solved by technology

[0003] However, the axial adjustment limiting device of the existing automobile steering column is not separated from the collision crumple protection function

The limit structure and collision collapse function simultaneously, so that when a collision occurs and the steering column collapses, the steering column cannot be completely collapsed due to the function of the limit structure, thus losing the collision protection effect on the driver

In addition, when the adjustment mechanism is released for normal axial adjustment operation, the steering column may be subjected to a large axial impact load, which will cause the steering column collapse structure to shear and collapse, making the collapse protection function invalid

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