Vehicle Side Outer Panel Segmentation for Moldability and Weight Reduction
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Solution Overview
Problem
Existing vehicle side section structures face challenges in moldability and the selection of lightweight materials, as they often require complex integrated panels that are difficult to manufacture and weight-reducing materials.
Innovation Solution
The vehicle side section structure features independently molded side outer panels that cover framework members from the outside, with an opening panel designed to maintain elastic force and include a bead for surface accuracy, allowing for improved moldability and the use of lightweight materials, and are divided into functional and styling units for easier painting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If side outer panels are integrated with framework members, then structural strength is improved, but moldability deteriorates and material selection is limited
Solution Approach 1:
The side outer panel is divided into multiple independent panels (front side outer panel, rear side outer panel, opening panel) that can be molded separately from the framework members. This segmentation allows each panel to be manufactured independently with optimized moldability while maintaining overall structural integrity through proper joining methods.
2Stability of the object's composition
If side outer panels are integrated with framework members, then structural rigidity is improved, but weight increases
Solution Approach 1:
By separating the side outer panels from the framework members, the design allows selection of lightweight materials for the panels while maintaining structural rigidity through the framework members. The independent panels can be made from lighter materials that would not be suitable if integrated with the structural framework.
3Reliability
If opening panel maintains elastic force for sealing member, then sealing performance is improved, but panel shape complexity increases
Solution Approach 1:
The opening panel incorporates specific local features (beads, protrusions, or recesses) at strategic locations to maintain elastic force for the sealing member. These localized structural modifications provide the necessary sealing functionality without requiring the entire panel to be complex, keeping manufacturing relatively simple while ensuring reliable sealing.
Data Source
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AI summary
There is provided a vehicle side section structure including: a plurality of framework members (50,60,62,70,80) that are disposed in a vehicle side section and that have closed cross-sections; side outer panels (14,16,18) that are molded independently from the framework members, and that cover the framework members from a vehicle width direction outer side; a door opening (22,24) configured by the plurality of the framework members; a side door (32,34) that is provided at the door opening so as to be capable of opening and closing; and a sealing member (42,44) that plugs a gap between the door opening and the side door; the side outer panels surrounding the door opening, and being configured from a plurality of panels including an opening panel (14) that bears elastic force from the sealing member when the side door is in a closed state.