Vehicle Front Body Triangular Frame Sections for Lateral Load Rigidity
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Solution Overview
Problem
Vehicle front body structures face challenges in maintaining rigidity to withstand lateral loads during turning while minimizing vehicle weight, as existing solutions require reinforcement that increases overall weight.
Innovation Solution
A vehicle front body structure featuring left and right front side frames, upper members, horizontal connecting members, legs, and diagonal connecting members forming triangular hollow prismoidal frame sections, which distribute lateral loads effectively, allowing for the use of thinner materials and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the leg portion is reinforced by an anti-tilt stay to withstand lateral loads during turning, then the rigidity is improved, but the overall weight of the vehicle body increases
Solution Approach 1:
The invention replaces straight anti-tilt stays with curved brace members that extend diagonally from the lower leg portion toward the upper member. This curvature allows the braces to better resist bending moments from lateral loads while using less material, thereby improving rigidity without proportionally increasing weight
Solution Approach 2:
The invention transitions from a two-dimensional planar reinforcement approach to a three-dimensional spatial configuration by positioning brace members diagonally in both longitudinal and lateral directions. This creates a triangulated rigid structure that efficiently distributes lateral loads through multiple load paths, achieving high rigidity with reduced material usage
2Strength
If thicker materials are used to maintain rigidity under lateral loads, then the strength is improved, but the vehicle weight increases
Solution Approach 1:
The invention divides the load-bearing function into multiple discrete brace members positioned at different locations and orientations, rather than using a single thick reinforcement. Each brace member carries a portion of the lateral load, allowing the use of thinner individual components that collectively provide the required strength while reducing total material usage and weight
Data Source
AI summary
A vehicle front body structure includes left and right diagonal connecting members extending diagonally between and connecting together the lower end portions of left and right legs and the front end portions of left and right upper members. Left and right horizontal connecting members, the left and right legs and the left and right diagonal connecting members together form left and right frame sections of substantially triangular hollow prismoidal configuration having an axis extending in the longitudinal direction of the vehicle body.