Triangular Vehicle Floor Frame for Side Collision Load Transfer
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Solution Overview
Problem
Existing vehicle designs fail to effectively transmit side collision loads to the opposite side sill in the vehicle width direction, leading to potential deformation or breakage of the floor section during a side collision.
Innovation Solution
A vehicle lower structure featuring a frame member with triangular structure portions that extend in the front-rear direction, connecting paired side sills, and incorporating oblique and longitudinal beam portions to distribute and transmit collision loads efficiently across the vehicle width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single first cross member and a single second cross member are used to connect the floor tunnel to the side sills, then the structure is simple, but the side collision load cannot be sufficiently transmitted to the opposite side sill
Solution Approach 1:
The frame member is divided into multiple beam structure portions (first oblique beam portions, second oblique beam portions, longitudinal beam portions, and lateral beam portions) that form multiple triangular structure portions. This segmentation allows the side collision load to be distributed across multiple load paths, enabling effective transmission to the opposite side sill while maintaining structural integrity.
Solution Approach 2:
The patent introduces triangular structure portions that create three-dimensional load distribution pathways. The oblique and longitudinal beam portions form triangular configurations that add structural dimensionality, allowing loads to be transmitted through multiple spatial paths rather than single linear paths, thereby improving load transmission reliability.
2Reliability
If multiple beam structure portions are combined to form triangular structure portions for improved load transmission, then the side collision load can be effectively transmitted, but the manufacturing cost and complexity increase
Solution Approach 1:
Multiple beam structure portions are merged to form integrated triangular structure portions within a single frame member. The first oblique beam portions, second oblique beam portions, longitudinal beam portions, and lateral beam portions are combined into a unified structure that functions as one cohesive load-bearing element, simplifying assembly while maintaining load transmission effectiveness.
3Object-affected harmful factors
If the frame member uses multiple triangular structure portions continuing in the front-rear direction, then the floor section is adequately protected during side collision, but the weight of the structure increases
Solution Approach 1:
The frame member incorporates triangular structure portions at specific locations where load transmission is most critical. The beam structure portions are strategically positioned to create triangular configurations that provide maximum protective effect during side collisions, rather than uniformly distributing material throughout the entire frame, thereby optimizing protection while controlling weight.
Data Source
AI summary
A frame member has paired side beam portions and an inner frame portion. The inner frame portion includes: plural first oblique beam portions, each first oblique beam portion extending forward to an outer side in a vehicle width direction from an inner side in the vehicle width direction; and plural second oblique beam portions, each second oblique beam portion extending rearward to the outer side in the vehicle width direction from the inner side in the vehicle width direction. The frame member has plural triangular structure portions, each triangular structure being formed by the respective side beam portion and an adjacent pair of the first oblique beam portion and the second oblique beam portion in a front-rear direction, and which continue in the front-rear direction on both sides in the vehicle width direction.