Vehicle Panel Local Thickening for Weight-Strength Trade-off
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Solution Overview
Problem
Existing vehicle body reinforcement techniques, such as those described in Japanese Patent No. 3852733, result in increased vehicle weight due to the need for larger and thicker panels to achieve desired reinforcing capabilities.
Innovation Solution
A vehicle panel made of metal, formed by press molding, with selectively thickened areas using a thickening process, such as metal 3D printing, to reinforce specific portions without increasing overall weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a panel of increased size and thickness is used for reinforcement, then the reinforcing capability is improved, but the vehicle body weight increases
Solution Approach 1:
The patent applies local quality by implementing a thickening part that increases panel thickness only at specific reinforcement locations rather than uniformly across the entire panel. This allows the panel to achieve the necessary strengthening capability at critical areas while maintaining lighter weight in non-critical regions, directly resolving the contradiction between reinforcement strength and overall weight.
Solution Approach 2:
The patent segments the panel into a main body portion and a separate thickening part that can be independently formed and then joined together. This segmentation enables selective thickening at specific locations without increasing the thickness of the entire panel, allowing reinforcement where needed while maintaining lighter weight overall.
2Strength
If a separate reinforcing panel is overlappingly attached, then the reinforcing capability is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the reinforcement function into the main panel structure by integrating the thickening part as a single component rather than using a separate reinforcing panel. This consolidation simplifies the manufacturing process by eliminating the need for separate attachment operations while maintaining the necessary reinforcing capability.
Solution Approach 2:
The thickening part is formed as a preliminary component before final assembly, allowing the reinforcement structure to be pre-prepared and integrated into the main panel manufacturing process. This preliminary formation simplifies subsequent assembly operations and reduces overall manufacturing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for targeted reinforcement of vehicle panels, maintaining structural rigidity while preventing weight increase, by thickening only necessary areas after press molding, thus enhancing the panel's ability to withstand external forces without compromising the panel's shape or appearance.
Implementation Method 1
utilizing methods like metal 3D printing, metal spraying, or cold spraying to enhance reinforcement
Implementation Method 2
utilizing methods like metal 3D printing, metal spraying, or cold spraying to enhance reinforcement
Implementation Method 3
utilizing methods like metal 3D printing, metal spraying, or cold spraying to enhance reinforcement
Data Source
AI summary
A panel to be arranged in a vehicle body includes a reinforcing inner panel made of metal and formed by press molding, and a thickening part to partially thicken the reinforcing inner panel by a thickening process. The reinforcing inner panel includes a first surface, a second surface, and a surface edge between the first surface and the second surface, along which the thickening part is provided.