Automobile steering column collapse energy absorption mechanism

Abstract

The invention relates to an automobile steering column collapse energy absorption mechanism. The steering inner tube is assembled in the steering outer tube, the energy absorption strip is axially mounted on the outer side of the steering inner tube, the crushing bracket is fixedly connected with the connecting bracket, and the connecting bracket is relatively steered. The outer tube is fixed, the upper and lower sides of the crushing bracket are respectively provided with flanges facing the energy absorbing bars, and the opposite flanges on the two sides are respectively provided with first convex hulls and second convex hulls protruding to the opposite sides at intervals. The convex hull, the energy absorbing strip is provided with a first fine blanking section, a second fine blanking section and a third fine blanking section along the crushing direction, and the crushing bracket is press-fitted and connected to the energy absorbing strip. When the segment collapses, the first convex hull has an interference fit with the second fine-blanking segment, and the second convex hull and the third fine-blanking segment have an interference fit. When the second segment collapses, the first convex hull and the first The fine blanking section has an interference fit, and the second convex hull is in clearance fit with the first fine blanking section and the second fine blanking section. The invention has the advantages of simple structure and high integration, and can realize the smooth collapse of the steering column.

Description

technical field [0001] The invention belongs to the technical field of automobile steering systems, and in particular relates to an automobile steering column collapse energy absorption mechanism. Background technique [0002] With the development of the automobile industry and the improvement of people's requirements for the comfort and safety of automobile driving, the energy-absorbing energy-crushing steering system with the function of angle adjustment has been gradually applied. When the car is hit violently, the driver tends to lean forward due to the strong stopping action, and the human chest will collide with the steering wheel. , Some cars design the steering column to collapse in two or three sections due to external extrusion during impact, so as to disperse some of the impact force transmitted from the steering column to the human body due to the impact. [0003] The existing steering column collapse mechanisms generally have the disadvantages of complex struct...

AI Technical Summary

Problems solved by technology

[0003] The existing steering column collapse mechanism generally has the disadvantages of complex structure, low integration, and cumbersome process requirements. At the same time, there are defects that the collapse force is difficult to control once a collision occurs and the collapse force fluctuates greatly.

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