Vehicle Pillar Trim with Folded Textile Edge for Airbag Deployment
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Solution Overview
Problem
Existing trim elements for motor vehicle pillars can undergo undesired deformations during airbag inflation, potentially impeding the planned unfolding of the airbag.
Innovation Solution
A trim element with a textile edge section folded over onto the inner side, connected at multiple joining points along a bending section, which acts as a reinforcement to absorb forces and ensure controlled deformation during airbag inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the edge section is minimally dimensioned to form only a seam, then the manufacturing complexity is reduced, but the trim element becomes susceptible to undesired deformations during airbag inflation
Solution Approach 1:
The edge section is pre-folded over onto the inner side and connected at multiple joining points along the bending section before airbag inflation occurs. This preliminary reinforcement structure is prepared in advance to resist the high forces that will act on the trim element during airbag deployment, preventing undesired deformations while maintaining manufacturing feasibility.
2Reliability
If the edge section is extended and connected at multiple joining points along the bending section, then the resistance to deformation is improved, but the manufacturing complexity increases
Solution Approach 1:
The edge section is selectively extended and connected at multiple joining points specifically along the bending section where deformation resistance is most needed during airbag inflation. This localized reinforcement approach targets the critical area requiring strength while avoiding unnecessary complexity in other regions of the trim element.
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 reduces the risk of undesired deformations, allowing for the planned pivoting of the trim element and ensuring the airbag unfolds correctly by absorbing traction forces and reinforcing the bending section.
Implementation Method 1
a bending section extending essentially along a longitudinal direction of the trim element, which is formed in the main body; and a pivoting section of the main body extending along the bending section, which is connected to the bending section and is pivotable around the bending section under the action of force
Data Source
AI summary
A trim element for a pillar of a body of a motor vehicle is described, in particular for an A pillar, having a main body; an outer side of the main body, which faces toward a vehicle interior in an installed state of the trim element on the pillar, an inner side of the main body, which faces toward the body in an installed state of the trim element on the pillar, a textile element covering the outer side having multiple edge sections folded over onto the inner side, and a bending section, which is formed in the main body, extending essentially along the longitudinal direction of the trim element; and a pivoting section of the main body extending along the bending section.