Automobile steering column crumple energy absorption mechanism

Abstract

The invention relates to an automobile steering column crumple energy absorption mechanism which is characterized in that a steering inner pipe is assembled in a steering outer pipe, an energy absorption strip is axially mounted on the outer side of the steering inner pipe, a crumple support is fixedly connected with a connecting support, the connecting support is fixed relative to the steering outer pipe, and flanges facing the energy absorption strip are arranged on the upper side and the lower side of the crumple support respectively. A first convex hull and a second convex hull which protrude towards the opposite sides are correspondingly arranged on the opposite turnups on the two sides at intervals respectively, a first fine blanking section, a second fine blanking section and a third fine blanking section are arranged on the energy absorption strip in the crumpling direction, and the crumpling support is connected to the energy absorption strip in a press fitting mode. In an original installation state, the first convex hull is in interference fit with the second fine blanking section when the first section collapses, the second convex hull is in interference fit with the third fine blanking section, the first convex hull is in interference fit with the first fine blanking section when the second section collapses, and the second convex hull is in clearance fit with thefirst fine blanking section and the second fine blanking section. The automobile steering column crumple energy absorption mechanism is simple in structure, high in integration level and capable of achieving stable collapsing of the steering column.

Description

technical field [0001] The invention belongs to the technical field of automobile steering systems, in particular to an automobile steering column collapse energy-absorbing mechanism. Background technique [0002] With the development of the automobile industry and the improvement of people's requirements for driving comfort and safety, the energy-absorbing steering system with angle adjustment function has been gradually applied. When a car collides violently, the driver tends to lean forward due to the strong stopping effect, and the chest of the human body will collide with the steering wheel. In order to reduce the impact force on the driver's chest impacted by the steering column Some cars design the steering column to collapse in two to three stages 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 genera...

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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