Vehicle Body Rear Reinforcement for Torsional Rigidity
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Solution Overview
Problem
Conventional vehicle body structures with tailgates suffer from reduced rigidity and durability, particularly around the tailgate opening portion, when the lamp housing panel is omitted, leading to degraded NVH performance and torsional rigidity.
Innovation Solution
A vehicle body rear portion structure featuring a plurality of reinforces disposed in an annular shape around the tailgate opening, with end portions of neighboring reinforces stacked and connected, and partition walls extending to the vehicle body rear panel, enhancing rigidity and durability by forming a robust connection network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the lamp housing panel is omitted from the vehicle body quarter portion, then the vehicle body design is simplified and cost is reduced, but the rigidity of the vehicle body quarter portion is degraded and durability is reduced
Solution Approach 1:
The quarter reinforce is divided into multiple segments (first quarter reinforce, second quarter reinforce, third quarter reinforce) that are stacked and connected in sequence. This segmentation allows the structure to maintain rigidity through distributed reinforcement while enabling modular assembly and design flexibility, effectively compensating for the removed lamp housing panel.
Solution Approach 2:
The quarter reinforces are arranged in a vertical stack configuration, transitioning from a single-plane reinforcement to a multi-dimensional stacked structure. This vertical stacking creates a more robust three-dimensional reinforcement system that significantly improves the rigidity of the quarter portion without adding lateral complexity.
2Productivity
If the lamp housing panel is omitted, then manufacturing cost and assembly time are reduced, but NVH performance and durability are degraded
Solution Approach 1:
The quarter reinforces are pre-configured with stacking connections and partition walls during manufacturing, creating a pre-assembled rigid structure. This preliminary structuring ensures that when the vehicle is assembled, the reinforced quarter portion is already optimized for durability and NVH performance, eliminating the need for complex post-assembly adjustments.
Solution Approach 2:
The quarter reinforce structure utilizes composite construction with multiple reinforce elements stacked and connected, creating a composite reinforcement system. This composite structure provides enhanced durability and vibration resistance compared to single-panel designs, maintaining reliability while simplifying the overall vehicle body structure.
3Device complexity
If welding connection between quarter internal panel and extension panel is eliminated, then assembly complexity is reduced, but structural rigidity and NVH performance are degraded
Solution Approach 1:
Multiple quarter reinforces are merged into a stacked configuration where the first, second, and third quarter reinforces are vertically connected. This merging creates a unified reinforcement structure that integrates the functions of multiple panels into a single rigid assembly, maintaining structural stability without requiring traditional welding connections to the quarter internal panel.
Data Source
AI summary
A vehicle body rear portion may have a tailgate opening portion for improving torsional rigidity and durability performance of a vehicle body.