Steering pipe column crumpling and sliding structure

Abstract

The invention discloses a steering pipe column crumpling and sliding structure. The steering pipe column crumpling and sliding structure comprises an upper support, a lower support and a tearing plate, wherein the upper support is used for supporting an upper column pipe, the lower support is used for supporting a lower column pipe; the tearing plate comprises a first connecting plate, a second connecting plate and a fixing plate, wherein the fixing plate is located between the first connecting plate and the second connecting plate; the fixing plate is fixedly connected with the upper support, and the first connecting plate and the second connecting plate are correspondingly fixed to the left side and the right side of the fixing plate through tearing grooves. Compared with the prior art, according to the steering pipe column crumpling and sliding structure, a crumpling energy-absorbing mode of a traditional pulling-out lock structure is replaced with a crumpling energy-absorbing mode of a tearing plate structure, energy is absorbed through fracture of the tearing plate, so that safety of a driver is protected, the energy which can be absorbed when crumpling is triggered is relatively stable, and the machining precision and the assembling precision of the steering pipe column crumpling and sliding structure are improved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of automobile steering systems, in particular to a steering column collapse and slip structure. Background technique [0002] With the continuous development of my country's automobile industry and the continuous improvement of automobile quality, the quality requirements for auto parts are also getting higher and higher. The steering column is the mechanism that transmits the action of the driver to manipulate the steering wheel to the steering gear. The column tube plays a supporting role and is fixed on the tube beam through the mounting bracket. The inner shaft transmits the torque of the steering wheel; The pull-off structure on the pipe column is partially broken, so as to realize the collapse of the steering pipe column within an appropriate distance, thereby reducing the damage of the steering wheel to the driver. [0003] Such as figure 1 The shown schematic diagram of the collapse and slide struc...

AI Technical Summary

Problems solved by technology

[0004] In the traditional structure, the collapse between the upper bracket 2' and the steering column is completed by pulling the lock 5'. The controllability of the existing injection molding process is poor, so that the collapse force will be higher. If the force is smaller than the collapse force, the steering column will not be able to collapse, and will not be able to protect the driver. The safety factor is low and the energy absorption range is not very stable.

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