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Energy-absorbing steering column

A technology for steering columns and steering shafts, which is applied to steering columns and steering controls mounted on vehicles, and can solve the problems of complex manufacturing, low efficiency of secondary collision impact energy, and difficult repairs, etc., and achieves easy assembly and simple structure , the effect of large elastic range

Active Publication Date: 2010-08-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing energy-absorbing steering column, which are not efficient in absorbing the impact energy of the secondary collision, and are complicated to manufacture and difficult to repair.

Method used

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  • Energy-absorbing steering column
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  • Energy-absorbing steering column

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] As shown in Figure 1, the energy-absorbing steering column provided by the present invention includes a steering shaft 1, an input shaft 3 and an energy-absorbing device 2, the steering shaft 1 and the input shaft 3 are set together, and the steering shaft 1 and the input shaft 3 It is a fit that can only move axially, wherein, there is an annular chamber 4 at the fitting place of the steering shaft 1 and the input shaft 3, and the annular chamber 4 is formed by the inner surface annular concave portion of the steering shaft 1 fitting place and the input shaft 3 The outer surface of the sleeve is composed of an annular recess; the energy-absorbing device 2 is a spring coil, which is sleeved on the input shaft 3 and located in the annular chamber 4 .

[0013] Since the energy-absorbing device 2 in the energy-absorbing steering column pr...

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PUM

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Abstract

The invention relates to an energy-absorbing steering column, which comprises a steering shaft, an input shaft and an energy-absorbing device; the steering shaft is sleeved with the input shaft, and the steering shaft is cooperated with the input shaft only through axial movement; wherein, a ring cavity is arranged at the sleeve position of the steering shaft and the input shaft; the ring cavity comprises an inner-surface ring concave part at the steering shaft sleeve part and an outer-surface ring concave part at the input shaft sleeve part; the energy-absorbing device is a spring ring; the spring ring is sleeved on the input shaft in the ring cavity. The energy-absorbing steering column has the advantages of obvious impact and energy-absorbing effects, simple structure, easy assembly and convenient maintenance.

Description

technical field [0001] The invention relates to an energy-absorbing steering column. Especially energy-absorbing steering columns for automobiles. Background technique [0002] When a car crashes, the main threats to the driver are the steering wheel and column. The energy of the collision causes the front of the car to undergo plastic deformation, and the steering column and steering shaft located at the front of the car will move backwards, that is, the direction of the driver's chest under the action of the collision force, which is called the first collision. The energy of this collision should be absorbed mechanically through the steering column to prevent or reduce its direct action on the driver and cause personal injury. On the other hand, when a car collides, the driver has a movement towards the steering wheel under the influence of inertia, which is called a secondary collision. Part of the motion energy of the driver itself is absorbed by restraint devices suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D1/19
Inventor 任乐彭龙华艾风杰
Owner BYD CO LTD
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