Front Hinge Pillar Reinforcement for Low-Overlap Impact
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Solution Overview
Problem
Existing front hinge pillars in vehicles are susceptible to opening during low-overlap frontal impacts, especially when large wheels are installed, and conventional reinforcements may limit wheel dimensions or be unsuitable.
Innovation Solution
A reinforced front hinge pillar design with a junction rabbet and a reinforcement part that includes projections and openings, allowing secure attachment and minimizing the reinforcement's footprint, enabling larger wheel installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional reinforcements are attached to the front hinge pillar, then the rabbet is protected from opening during impact, but the reinforcement increases the footprint in the wheel arch, limiting wheel dimensions
Solution Approach 1:
The reinforcement part is positioned inside the wheel arch structure, nesting the protective element within the existing spatial envelope. The reinforcement part with openings allows the wheel to pass through or alongside it, effectively nesting the protection system within the wheel arch without protruding outward, thus maintaining rabbet integrity while preserving wheel arch space for larger wheels
Solution Approach 2:
The reinforcement part is segmented with multiple openings that allow the wheel to pass through. This segmentation creates discrete zones of protection while maintaining openness for wheel accommodation. The segmented structure provides impact protection at critical locations without requiring a solid continuous reinforcement that would block wheel space
2Strength
If the front hinge pillar is reinforced with traditional designs, then impact resistance is improved, but the design complexity and manufacturing difficulty increase
Solution Approach 1:
The reinforcement part serves multiple functions simultaneously: it protects the rabbet from opening during impact, maintains structural integrity of the front hinge pillar, and allows passage of the wheel through its openings. This multi-functionality consolidates what would traditionally require multiple separate components into a single integrated part, reducing overall design complexity while maintaining strength
Solution Approach 2:
The reinforcement part applies protective function locally at the rabbet area rather than reinforcing the entire front hinge pillar uniformly. The openings are strategically positioned to provide protection where needed while maintaining openness for wheel passage, creating localized quality enhancement without global structural complexity
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 design effectively prevents the rabbet from opening during impacts, ensuring the integrity of the passenger compartment while accommodating larger wheels.
Implementation Method 1
the sheet-metal parts being joined together by a plurality of welding points located on the junction rabbet
Implementation Method 2
the reinforcement part being designed to reinforce the front hinge pillar and prevent the rabbet from opening in the event of a frontal impact
Data Source
AI summary
The invention relates to a vehicle body (1) comprising at least one front hinge pillar (2) which partly delimits a wheel arch (3) and is made up of at least two sheet-metal parts (5) forming a rabbet (6), the sheet-metal parts (5) being joined by welding points (7) which are located on the rabbet (6), the body (1) comprising a reinforcement part (8) which is attached to the front hinge pillar (2) between the front hinge pillar (2) and a wheel, the reinforcement part (8) being designed to reinforce the front hinge pillar (2), cover a part of the front hinge pillar (2) and extend on either side of the rabbet (6) which has a plurality of projections (15) which are intended to receive the weld points (7), the reinforcement part (8) having a plurality of openings (18) which are located facing each projection (15) in order to allow each projection (15) to pass through an opening (18).