Steering Column Energy Absorption Assembly Design
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Solution Overview
Problem
Existing steering column assemblies lack effective energy absorption mechanisms during vehicle impacts, which can compromise vehicle safety.
Innovation Solution
A steering column assembly featuring a telescopically adjustable design with an energy absorption assembly that includes a first and second member and an energy absorption strap, providing a receiving area and compressive forces to resist deformation and maintain consistent drag force during collapse events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional steering column design is used, then the structure is simple, but energy absorption capability during impact is insufficient
Solution Approach 1:
The steering column is divided into multiple segments (first member, second member, energy absorption strap) that can move relative to each other during impact. The energy absorption assembly includes a first member connected to the upper jacket, a second member connected to the lower jacket, and an energy absorption strap connecting them, allowing segmented deformation to absorb impact energy
Solution Approach 2:
The energy absorption assembly is designed to dynamically deform during impact events. The telescopic actuator enables controlled movement between column segments, and the energy absorption strap allows relative displacement between members to convert kinetic energy into work done during deformation
2Reliability
If the steering column collapses freely during impact, then energy absorption is maximized, but control over collapse characteristics is lost
Solution Approach 1:
The telescopic actuator provides feedback control during column collapse, monitoring the deformation process and adjusting the collapse characteristics in real-time. This ensures consistent energy absorption while maintaining control over the collapse dynamics
Solution Approach 2:
The energy absorption assembly changes physical parameters during impact - the relative position between first and second members, the tension in the energy absorption strap, and the deformation characteristics are dynamically adjusted to maintain consistent energy absorption performance
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
Enhances vehicle safety by effectively decelerating the steering column during impacts, ensuring consistent energy absorption and minimizing component complexity and installation requirements.
Implementation Method 1
providing a receiving area and compressive forces to resist deformation
Implementation Method 2
effectively decelerating the steering column during impacts, ensuring consistent energy absorption
Data Source
AI summary
A steering column assembly that includes an upper jacket, a drive bracket, and an energy absorption assembly. The drive bracket is coupled to the upper jacket. The energy absorption assembly includes a first member and a second member. The first member has a first member body extending between a first member first end and a first member second end. The second member has a second member body extending between a second member first end and a second member second end. A receiving area is defined between the first member body and the second member body.