Integrated Vehicle Floor Frame for Side-Impact Rigidity
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Solution Overview
Problem
Next-generation vehicles with frame-type platforms, such as those using fuel cells or electricity, face challenges in crash performance due to low shock absorption and rigidity, particularly in side collisions, which can lead to passenger and battery protection issues.
Innovation Solution
The integration of a side sill upper portion and cross member into a single panel, forming an integrated frame with a floor panel, enhances rigidity and impact absorption by forming a closed cross-sectional surface, expanding the protection range against side collisions through strategically placed protrusions and sub-members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a frame-type platform is used to improve rigidity, then structural rigidity is improved, but shock absorption volume decreases
Solution Approach 1:
The side sill upper portion and cross member are merged into a single integrated component formed from one piece of steel plate, eliminating traditional joints and improving both rigidity and shock absorption capacity simultaneously
Solution Approach 2:
The integrated frame creates a three-dimensional closed-section structure that utilizes spatial configuration to enhance both rigidity and shock absorption volume, transforming a two-dimensional plate into a volumetric protective structure
2Ease of manufacture
If traditional separate manufacturing of side sill upper portion and cross member is used, then manufacturing flexibility is maintained, but manufacturing cost increases and rigidity decreases
Solution Approach 1:
The side sill upper portion and cross member are combined into a single integrated component formed from one piece of steel plate, eliminating the need for separate manufacturing and assembly processes, thereby reducing manufacturing cost and improving connecting part rigidity simultaneously
Data Source
AI summary
An embodiment floor body for a vehicle includes a floor panel including an upper surface and an integrated frame coupled to the upper surface of the floor panel, the integrated frame including a pair of side sill upper portions extending in a front/rear direction of the vehicle to be spaced apart from each other in a right/left direction of the vehicle and a cross member extending in the right/left direction of the vehicle to connect the side sill upper portions on either side, wherein the pair of side sill upper portions and the cross member are integrally molded.