Hemmed Body Panel Edge for Vehicle Attachment Strength
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Solution Overview
Problem
Existing body panels attached to vehicle structures often lack sufficient strength and stiffness at attachment points, necessitating additional reinforcements, which can increase mass and complexity.
Innovation Solution
A body panel design featuring a single thickness portion and a double thickness edge portion that is hemmed over onto itself, allowing for enhanced attachment via welds, fasteners, or adhesives, thereby improving joint strength and stiffness without additional reinforcements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If body panels are made thin to minimize vehicle mass, then weight is reduced, but attachment strength and stiffness become insufficient
Solution Approach 1:
The body panel features a double thickness edge portion at the attachment region while maintaining single thickness in the main panel area. This local quality change provides enhanced strength and stiffness where needed for attachment without increasing the overall weight of the vehicle panel.
Solution Approach 2:
The hemmed edge portion creates a three-dimensional structure by folding the panel edge back onto itself, transforming a two-dimensional flat panel into a multi-layered edge configuration. This dimensional change provides increased attachment surface area and structural rigidity without adding panel thickness elsewhere.
2Strength
If reinforcements are added to body panels at attachment points, then attachment strength is improved, but device complexity and mass increase
Solution Approach 1:
The attachment reinforcement structure is merged with the body panel itself through the hemmed edge portion, eliminating the need for separate reinforcement components. The panel edge is folded back and attached to create an integrated L-shaped structure that provides both panel continuity and attachment strength.
Solution Approach 2:
The body panel serves its own reinforcement function through the hemmed edge configuration, where the panel material itself creates the structural enhancement needed for attachment without requiring additional reinforcement parts or complex assembly procedures.
Data Source
AI summary
A body panel that is attachable to a body structure is provided. The body panel has a single thickness portion and a double thickness edge portion where the body panel is hemmed over onto itself and is attachable to the body structure. The body panel may be made of a metal material or a non-metal material. The attachment may be via a weld, a fastener, and/or an adhesive.