Vehicle steering column

Abstract

The invention discloses a vehicle steering column, which comprises a steering column, wherein the steering column consists of an upper shaft and a lower shaft. The upper shaft and the lower shaft are connected by a variable-rigidity torsion bar; the inner circle of the upper shaft has internal teeth, the outer circle of the lower shaft has external teeth matched with the internal teeth of the upper shaft; and when a steering wheel is centered, the internal teeth of the upper shaft are position in gaps between the adjacent external teeth of the lower shaft for connection. The steering wheel is rotated, and when the internal teeth and the external teeth contact completely, the range of the single edge rotation angle of the upper shaft from the centered position of the steel wheel is set between 6 and 10 DEG. When the steering wheel is rotated within a certain angle range, the steering force applied on the steering wheel increases with the increase in a steering angle, so an excellent steering feel is provided. Thus, it is easier for the steering wheel to return to and stay in a central position, the straight driving feel of a driver is enhanced, and driving fatigue of the driver is relieved.

Description

technical field [0001] The invention relates to the field of vehicle steering systems, in particular to a vehicle steering column. Background technique [0002] At present, the steering column products for vehicles, in terms of structure, most of the torsional stiffness is constant and unchangeable, and the force acting on the steering wheel during the entire steering process is constant. However, in the actual use of the vehicle, when the driver performs a steering operation, it is expected that the hand force applied to the steering wheel will vary with the angle. If the steering force can gradually increase with the increase of the steering angle, it is a very good steering feeling. At the same time, if the steering wheel can be kept in the middle position as much as possible, it will be convenient for the driver's subjective feeling and judgment, thereby reducing the degree of fatigue during driving. Specifically, it is to make it easier for the vehicle's steering whee...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vehicle steering column, which solves the problem that the ordinary vehicle steering column cannot realize that the steering force acting on the steering wheel increases with the increase of the steering angle during the steering process, and the steering wheel cannot be easily returned to and maintained at middle position problem

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