Vehicle Body Seat Mounting Structure for Flat-Floor Rigidity
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Solution Overview
Problem
The challenge of stably mounting a seat on a vehicle floor with a large height difference between the floor and the seat seating surface, particularly in vehicles with a flat floor configuration, while maintaining vehicle body rigidity without excessive weight increase.
Innovation Solution
A vehicle body structure incorporating a floor panel, a front mounting member, and a partition member that protrude and extend laterally to fix the seat, coupled with quarter inner panels and cross members to enhance stability and rigidity, using a closed cross-section design with bulkheads and seat mounting brackets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flat floor configuration is used in the vehicle, then the vehicle can accommodate various life modules and respond to diversified market demands, but a large height difference is formed between the floor and the seat seating surface, making it difficult to stably mount the seat on the floor
Solution Approach 1:
The seat mounting structure is divided into multiple components: a floor panel, a front mounting member extending from the front of the seat, and a partition member extending from the rear of the seat. These segmented components work together to provide stable mounting on the flat floor, addressing the reliability issue while preserving the flat floor configuration's adaptability benefits.
Solution Approach 2:
The front mounting member and partition member extend in the lateral direction (width dimension) rather than only in the longitudinal direction. This dimensional change allows the mounting structure to leverage the width of the vehicle body to achieve stable seat fixation on the flat floor, compensating for the height difference issue.
2Reliability
If additional mounting structures are added to fix the seat stably on the flat floor, then the seat mounting stability is improved, but the weight of the vehicle body increases
Solution Approach 1:
The front mounting member and partition member are integrated with the floor panel to form a unified mounting structure. The opposite ends of these members are coupled to quarter inner panels, merging multiple structural elements into a cohesive assembly that provides stable seat mounting without requiring excessive additional weight.
Solution Approach 2:
The front mounting member and partition member serve multiple functions: they provide seat mounting attachment points, contribute to vehicle body rigidity, and integrate with the overall floor structure. This multi-functionality reduces the need for separate dedicated components, thereby controlling weight while achieving stable mounting.
3Adaptability or versatility
If the floor position is lowered to form a flat floor, then the vehicle can accommodate various life modules, but the height difference between the floor and seat seating surface increases, complicating the mounting process
Solution Approach 1:
The front mounting member and partition member are pre-configured with extending structures that protrude laterally from the floor panel. This preliminary configuration of the mounting structure eliminates the need for complex assembly procedures during seat installation, making the mounting process easier despite the flat floor configuration.
Data Source
AI summary
An embodiment vehicle body structure includes a floor panel, a front mounting member on an upper side of the floor panel, wherein the front mounting member protrudes and extends in a lateral direction of a vehicle body so as to fix a front lower side of a seat, and a partition member at a rear of the front mounting member, wherein the partition member protrudes and extends in the lateral direction of the vehicle body so as to fix a rear lower side of the seat.