A Steering Column Bracket Structure for Improving the Natural Frequency of Steering System

Abstract

The invention proposes a steering column bracket structure for increasing the natural frequency of the steering system, which includes a lower bracket, an upper bracket and a steering column mounting plate. It designs an extension section on the upper and lower brackets of the steering column facing the direction where the steering wheel is installed on the steering column, and the locking point of the steering column on the upper and lower brackets also moves to a position close to the steering wheel along with the extension. The position of the hard point on the steering column mounting plate is staggered and not at the same height, and the distance L1 between the locking point of the steering column and the steering wheel is smaller than the distance L2 between the hard point and the steering wheel. The invention controls the locking position of the relatively hard point in the steering column, that is, the locking point of the steering column, by changing the structure of the upper bracket and the lower bracket of the steering column, thereby shortening the distance from the steering column to the steering wheel section, and then adjusting The quality and stiffness distribution of the steering system can improve the natural frequency of the steering system.

Description

technical field [0001] The present invention relates to an automobile steering system. Background technique [0002] The function of the car steering system is to input steering commands according to the driver's wishes, so as to obtain the overall steering control of the car. With the improvement of people's requirements for driving entertainment and ride comfort, the steering system, as a component directly contacted by the human body, its ergonomics performance and noise and vibration performance have become indicators that people pay more and more attention to. It is required that the steering system of more and more models has an adjustable angle and height mechanism, which can adjust the position of the steering wheel within a certain range to meet the driving habits of different groups of people, such as "Automobile steering column adjustable inclination device "(Patent No.: ZL200920203715). However, due to the existence of the adjustable structure, the connection s...

AI Technical Summary

Problems solved by technology

In the process of traditional automobile development and design, when the natural frequency of the steering system does not meet the requirements, it is often done by increasing the diameter of the steering column, thickening the structural parts of the steering column, changing the location of the hard point connecting the steering column, etc. However, due to the cost, space, and weight constraints of the modified car, as well as the consideration of the versatility of the steering system components, the design space of the steering column itself is very small, resulting in little effect of this method

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