Steering Column Wedge Mechanism for Stable Gap Elimination
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Solution Overview
Problem
Existing gap elimination means in adjustable steering columns fail to stably maintain a gapless state between the inner and outer sleeves due to deformation and shifting of springs, leading to creaking noises, and require additional installation space.
Innovation Solution
A steering column design incorporating an elastic pretensioning element and a wedge-shaped body with an intermediate element, where the pretensioning element applies a pressing force via the intermediate element to the wedge-shaped body, preventing the transmission of force back to the elastic element and maintaining a stable gapless state, while reducing installation space through a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring applies pressing force directly to a wedge-shaped body to eliminate gaps, then the gap between sleeves is eliminated, but the force transmitted back to the spring causes shifting or deformation, making the gapless state unstable
Solution Approach 1:
The patent introduces a wedge-shaped body as an intermediary element between the spring and the inner sleeve. The spring applies force to the wedge-shaped body, which then transmits this force to the inner sleeve through friction and normal forces. This intermediary structure prevents direct force transmission back to the spring, eliminating the shifting and deformation problems while maintaining stable gap elimination.
2Reliability
If traditional gap elimination means is used, then gaps are eliminated, but additional installation space is required
Solution Approach 1:
The patent combines multiple functions into the wedge-shaped body structure. It simultaneously serves as a force transmission element, a gap elimination mechanism, and a space-saving design feature. The wedge-shaped body integrates the functions of force application and gap closure in a compact form, reducing the overall installation space required compared to traditional separate components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents creaking noises and reduces installation space by ensuring a stable gapless state between the sleeves, allowing for a compact and durable steering column design that minimizes collisions with vehicle components.
Implementation Method 1
an elastic pretensioning element and a wedge-shaped body with an intermediate element, where the pretensioning element applies a pressing force via the intermediate element to the wedge-shaped body
Data Source
AI summary
The present disclosure relates to a steering column, comprising: a first sleeve, a second sleeve and a gap elimination means. The first sleeve is received in the second sleeve in a telescopic way in a longitudinal direction. The gap elimination means includes an elastic pretensioning element and a wedge-shaped body, the wedge-shaped body having a first wedge-shaped surface and a second mating surface. The gap elimination means further comprises an intermediate element, the intermediate element having a third wedge-shaped surface which abuts the first wedge-shaped surface and has a shape fitted to the shape of the first wedge-shaped surface. The pretensioning element applies a pressing force to the wedge-shaped body via the intermediate element. The steering column according to the present disclosure is capable of stably maintaining a gapless state between the first sleeve and second sleeve, thus preventing noise.