Steering Column Telescoping Lock to Prevent Column Separation
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Solution Overview
Problem
Conventional steering columns collapse in vehicle collisions, leading to separation of the upper and lower columns during telescoping, which renders steering impossible.
Innovation Solution
A steering column configuration where an obstructing member contacts a stop protrusion of the lower column during telescoping, preventing the upper column from detaching, and allowing for adjustable extension to maintain smooth steering operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering column is designed to collapse in a vehicle collision for energy absorption, then the safety and energy absorption capability are improved, but the upper column separates from the lower column during telescoping operation, making steering impossible
Solution Approach 1:
The patent introduces an obstructing member as an intermediary component between the upper and lower columns. This member includes an obstructing protrusion that engages with a corresponding recess in the lower column, preventing complete separation during collision while still allowing controlled telescoping motion for normal operation and energy absorption during impact.
2Adaptability or versatility
If the steering column allows telescoping operation for adjustment, then the adaptability to driver height and body type is improved, but the upper column becomes detached from the lower column in collision situations
Solution Approach 1:
The patent implements a dynamic coupling mechanism where the obstructing member can move relative to the lower column during normal telescoping operations, allowing full adjustment range. However, under collision forces, the obstructing protrusion engages with the recess to create a rigid connection that maintains structural integrity while still permitting controlled deformation for energy absorption.
Data Source
AI summary
Provided is a steering column of a vehicle. The steering column is configured such that, in a telescoping operation in a situation in which the steering column collapses, an obstructing member contacts a stop protrusion of a lower column to prevent an upper column from being detached. The amount of extension of the steering wheel is adjusted according to the height or body type of a driver so as to reliably maintain the telescoping operation and enable a smooth steering operation.