Collapse energy-absorption mechanism for steering column

Abstract

The invention provides a collapse energy-absorption mechanism for a steering column, and belongs to the technical field of automobiles. The invention solves the problem that the conventional energy-absorption steering column has not obvious overall energy-absorption effect. The collapse energy-absorption mechanism for the steering column is arranged between a crossbeam of a vehicle instrument board and the steering column, and comprises a fixed support fixedly connected with the crossbeam of the vehicle instrument board and a connecting support fixedly connected with the steering column; the fixing support is fixedly connected with a torsion bar capable of elastically deforming; the connecting support is provided with two symmetrical guide sliding holes; two ends of the torsion bar are respectively positioned at the two guide sliding holes; and the connecting support is provided with a force guiding structure capable of transferring the impact force stressed on the steering column to the torsion bar. The collapse energy-absorption mechanism has the advantages of good energy-absorption effect and the like, and can make the steering column stably and fully absorb the energy.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to an energy-absorbing mechanism, in particular to a crushing energy-absorbing mechanism for an automobile steering column. Background technique [0002] When a car collides, the main threat to the driver is the car's steering wheel and steering column. The energy of the frontal collision of the car makes the front part plastically deformed, and the steering column and the steering shaft at the front part of the car move backwards and toward the driver's chest under the action of the collision force, which is called the first collision. The energy of this collision is absorbed by the energy-absorbing structure of the lower steering shaft assembly at the front end of the steering column, preventing or reducing its direct action on the driver and causing personal injury. On the other hand, when the car collides, the driver has a movement towards the steering wheel under the influen...

AI Technical Summary

Problems solved by technology

[0005] Although the energy-absorbing steering column of this structure is easy to control and adjust, the overall energy-absorbing effect is not obvious

When the car collides, the energy-absorbing column cannot be adjusted step by step, resulting in direct contact between the driver and the steering wheel, causing damage

Moreover, the impact energy of the energy-absorbing steering column of this structure is limited. When the car collides violently, the energy-absorbing column will be damaged, and the effect of energy-absorbing protection cannot be achieved.

Furthermore, the increased bias load in the secondary collision cannot be controlled at all, and the loss caused is also immeasurable

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