Rear Pillar Load Transfer via Floor-Rear Panel Junction
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Solution Overview
Problem
Existing vehicle body structures require a large number of components to reinforce the upper portion of the damper housing and the rear floor panel to bear loads transmitted from the rear pillar, leading to increased complexity and component count.
Innovation Solution
A vehicle body structure design where the rear pillars are joined to the intersection portion between the floor and rear panel, forming a U-shaped cross-section with a flange and flat plate portions, allowing the load to be dispersed and borne by the intersection portion, reducing the need for additional reinforcing members and components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the upper portion of the damper housing is reinforced by multiple reinforcing members to bear the load transmitted from the rear pillar, then the load bearing capacity is improved, but the number of components increases
Solution Approach 1:
The invention merges the reinforcing function into the damper housing itself by forming a recessed corner portion directly in the housing structure. This eliminates the need for separate reinforcing members, reducing component count while maintaining load bearing capacity through the integrated structural design.
Solution Approach 2:
The damper housing is designed to reinforce itself through the recessed corner portion formed directly in its structure. The housing performs both its primary function of housing the damper and the secondary function of reinforcing the load bearing area, eliminating the need for external reinforcing components.
2Stability of the object's composition
If the rear end of the rear floor panel and the rear panel are reinforced by multiple reinforcing members to ensure rigidity and strength, then the structural integrity is improved, but the number of components increases
Solution Approach 1:
The invention combines the floor panel and rear panel into an integrated structure where the rear panel is formed to rise upward from the rear end of the floor panel. This merging of components creates inherent structural rigidity at the intersection portion, eliminating the need for separate reinforcing members while maintaining structural integrity.
3Force
If a large load is input from the rear pillar to the upper portion of the damper housing, then the load transmission function is achieved, but the damper housing requires additional reinforcing members to bear the load
Solution Approach 1:
The damper housing is designed to handle the load transmission from the rear pillar through its own integrated structure with the recessed corner portion. The housing performs the self-reinforcement function, bearing the transmitted load without requiring additional external reinforcing components.
Data Source
AI summary
A vehicle body structure is provided with: a floor for forming the floor surface of a vehicle body rear section; a rear panel raised from the rear end of the floor; left and right roof side rails extending in the front-rear direction on the upper left and right sides of the vehicle body; and left and right rear pillars extending downward toward the rear of the vehicle body from the left and right roof side rails. The lower end of the left rear pillar is joined to the outer left side section of an intersection section in the widthwise direction of the vehicle body, the intersection section being that at which the floor and the rear panel intersect.