Crumple energy absorption type automobile steering pipe column assembly and assembling method thereof

Abstract

The invention provides a crumple energy absorption type automobile steering pipe column assembly and an assembling method thereof. The automobile steering pipe column assembly comprises an inner column pipe, a cylindrical precision positioning ring and an outer column pipe, wherein one end of the inner column pipe is sleeved with the cylindrical precision positioning ring, and the cylindrical precision positioning ring is sleeved with one end of the outer pipe column. The cylindrical precision positioning ring forms the convex rib interference fit state between the inner column pipe and the outer column pipe, and compensates for the fit clearance between the inner column pipe and the outer column pipe. Due to the fact that the pipe column assembly is provided with the precision positioning ring, the effects that the fit clearance between the inner column pipe and the outer column pipe is automatically compensated, and crumple energy absorption is achieved through interference fit between the inner column pipe and the outer column pipe are achieved. In addition, crushing force of the steering pipe column assembly is stable and controllable, and the yield of the volume production is improved.

Description

technical field [0001] The invention relates to an automobile steering column assembly, more specifically, to a collapse energy-absorbing automobile steering column assembly and an assembly method thereof. Background technique [0002] The collapsible steering column means that the steering column can collapse and deform according to the pre-design when the vehicle collides. When a car collides violently, the driver tends to lean forward due to the strong stopping action, 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 and fold in two to three stages due to external extrusion during impact, which can disperse some factors. Impact is the impact force transmitted to the human body by the steering column. [0003] At present, column tube energy-absorbing steering columns mostly use riveting points or embossed ribs to...

AI Technical Summary

Problems solved by technology

[0003] At present, column tube energy-absorbing steering columns mostly use riveting points or embossed ribs to achieve collapse energy absorption, but these two methods do not have the function of automatically compensating the gap between the inner and outer column tubes. The processing and manufacturing tolerances are relatively sensitive, and the tolerance requirements are relatively high. The collapse force is not easy to control to a certain range. The one-time pass rate in the manufacturing process is low, and once the collapse force fails, the product cannot be repaired and can only be scrapped, so it is scrapped. higher rate

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