Vehicle Framework Coupling Section for Load Distribution
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Solution Overview
Problem
The existing vehicle framework structure without a floor tunnel experiences reduced bending rigidity, leading to potential concentration of collision load between the uniform portion and the intermediate frame, hindering efficient load transmission during a vehicle collision.
Innovation Solution
A vehicle framework structure incorporating a coupling section with first and second configuration coupling members that gradually increase in size in the vehicle width and vertical directions, effectively coupling the front, rear, and intermediate frame members to distribute load efficiently and prevent stress concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no floor tunnel is provided in the vehicle framework, then the structure is simplified and suitable for electric vehicles, but the bending rigidity of the floor panel is reduced and collision load concentrates in the vehicle framework
Solution Approach 1:
The coupling section is divided into multiple coupling members (first coupling member and second coupling member) that are arranged in sequence along the vehicle front-rear direction. This segmentation allows the load to be distributed across multiple connection points rather than concentrated at a single location, thereby maintaining framework strength while preserving the simplified no-tunnel floor structure.
Solution Approach 2:
The coupling members are designed to extend not only in the vehicle front-rear direction but also in the vehicle width direction, creating a multi-dimensional load distribution network. This dimensional expansion allows collision loads to be dispersed across a larger structural area, compensating for the reduced floor panel rigidity.
2Device complexity
If collision load concentrates between the uniform portion and the intermediate frame member, then the structure is simpler, but the load transmission efficiency is hindered
Solution Approach 1:
The first and second coupling members act as intermediary elements between the intermediate frame member and the front/rear frame members. These coupling members gradually increase in size from their connection to the intermediate frame toward their connection to the front/rear frames, creating a progressive load transfer path that improves transmission efficiency while maintaining structural simplicity.
Solution Approach 2:
The coupling members are designed with varying cross-sectional dimensions along their length, gradually increasing from the intermediate frame connection end to the front/rear frame connection end. This parameter change creates a gradient structure that optimizes stress distribution and load transmission efficiency without requiring complex additional components.
Data Source
AI summary
The present disclosure presents aA vehicle framework structure, whichstructure comprises: a front frame member that configuresforms a part of a vehicle framework ofat a vehicle front section of a vehicle; a rear frame member that configuresforms a part of athe framework ofat a vehicle rear section of the vehicle; an intermediate frame member that configuresforms a part of athe framework ofat a vehicle intermediate section of the vehicle, and that includes a framework memberthe intermediate frame member is disposed between the front frame member and the rear frame member, and havinghas a length direction in a vehicle front-rear direction; and a coupling section that includes a first configurationcoupling member attached to the framework member of the intermediate frame member so as to be continuous with the framework memberextend in the vehicle front-rear direction, and a second configurationcoupling member attached to the first configurationcoupling member so as to be continuous with the first configuration memberextend in the vehicle front-rear direction.