Vehicle Body Front Structure Triangular Reinforcement
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Solution Overview
Problem
The existing vehicle body front structure requires filling foamed resin into frames, which complicates assembly and reduces work efficiency.
Innovation Solution
A vehicle body front structure with left and right front side frames, floor frames, and a subframe, featuring upper and lower horizontal portions, inclined portions, and reinforcing members that form a triangular sectional shape, which disperses impact energy and suppresses deformation, allowing for easier manufacturing and improved support rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If foamed resin is filled into frames to suppress deformation, then deformation resistance is improved, but assembly complexity and manufacturing time increase
Solution Approach 1:
The patent extracts and eliminates the foamed resin filling process from the frame structure. Instead of filling resin into the inclined portions, the design uses a pure structural solution with curved portions and reinforcing members that achieve deformation resistance without requiring additional materials or filling operations.
Solution Approach 2:
The frame is segmented into distinct functional portions: upper horizontal portions, inclined portions, and lower horizontal portions, with curved transition portions connecting them. This segmentation allows each portion to be optimized for its specific function while maintaining overall structural integrity without requiring filler materials.
2Strength
If foamed resin is filled into frames to suppress deformation, then deformation resistance is improved, but manufacturing process complexity increases
Solution Approach 1:
The manufacturing process is simplified by extracting and removing the foamed resin filling step entirely. The deformation resistance is achieved through the geometric design of curved portions and reinforcing members, which can be manufactured using standard metal forming and welding processes without requiring composite material fabrication.
Solution Approach 2:
Instead of adding material (foamed resin) to achieve strength, the invention inverts the approach by using strategic material removal and geometric optimization of the metal frame itself. The curved portions and reinforcing members create structural strength through shape optimization rather than material addition.
3Strength
If reinforcing members are added to suppress deformation, then deformation resistance is improved, but structural complexity increases
Solution Approach 1:
Reinforcing members are strategically placed only at critical locations where deformation is most likely to occur, such as at the curved portions connecting horizontal and inclined sections. This localized reinforcement provides maximum structural benefit with minimal additional complexity, rather than uniformly strengthening the entire frame.
Solution Approach 2:
The invention uses curved portions with specific radii of curvature to transition between horizontal and inclined frame sections. These curved geometries naturally distribute stress and resist deformation through their geometric properties, reducing or eliminating the need for additional reinforcing members in many locations.
Data Source
AI summary
Front side frames and respective floor frames form upper horizontal portions, inclined portions, and lower horizontal portions. Each of the upper horizontal portions substantially horizontally extends. Each of the inclined portions is formed so as to extend rearward and so as to be inclined downward from a rear end of the upper horizontal portion. Each of the lower horizontal portions substantially horizontally extends rearward from a rear end of the inclined portion. A horizontal wall-shaped first reinforcing member extends rearward from the upper horizontal portion, and a vertical wall-shaped second reinforcing member extends from a rear end of the first reinforcing member to a bottom of the inclined portion. Front subframe supports that support the subframe are provided under triangular sectional portions formed by the inclined portion, the first reinforcing member and the second reinforcing member.