Vehicle Hinge Pillar Brace Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hinge pillars in vehicles deform during impacts, leading to separation of inner and outer members known as 'oil canning,' which compromises structural integrity and safety.
Innovation Solution
A hinge pillar assembly with a monolithic brace connecting the inner and outer members, reinforced by fasteners and a weld, which increases the strength and resistance to separation by distributing tension and shear stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hinge pillar uses separate inner and outer members, then the manufacturing and assembly are simpler, but the structural integrity and resistance to separation during impact are reduced
Solution Approach 1:
The hinge pillar is divided into separate inner and outer members that are independently manufactured and then connected through a brace structure. This segmentation allows for simplified manufacturing of individual components while the brace provides the necessary structural reinforcement to prevent separation during impact, resolving the contradiction between manufacturing simplicity and structural integrity.
Solution Approach 2:
A brace structure acts as an intermediary element connecting the inner and outer members of the hinge pillar. This intermediate component distributes and transfers loads between the members, preventing direct separation while maintaining the simplicity of having separate, easily manufactured components. The brace serves as the mediating structure that resolves the tension between component simplicity and overall structural strength.
2Strength
If the hinge pillar members are rigidly connected, then the resistance to deformation is improved, but the stress concentration and likelihood of failure at connection points increase
Solution Approach 1:
The connection between inner and outer members is strengthened locally at specific critical points through the brace structure, rather than making the entire connection rigid. The brace provides localized reinforcement where needed to resist deformation during impact, while allowing some flexibility elsewhere in the connection, thereby reducing stress concentration at any single point and improving overall reliability.
Data Source
AI summary
An assembly includes a hinge pillar having an inner member and an outer member. The assembly includes a brace between the inner member and the outer member, the brace having a side portion fixed to the outer member and a front portion fixed to the inner member.