Rear Floor Panel Structure for Flat-Floor Seat Mounting
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Solution Overview
Problem
Conventional purpose-built vehicles (PBVs) with a rear wheel CTBA and front wheel drive type do not efficiently utilize the rear interior space due to the inclined rear floor panel, limiting the customization and functionality of the vehicle for passengers.
Innovation Solution
A rear vehicle body structure with a rear floor panel and seat mount unit that includes a rear crossmember, front crossmember, and seat mounting brackets, forming an accommodating space to maximize the use of the rear interior space by creating a flat panel bottom part with a height difference, allowing for the accommodation of additional items.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rear floor panel is disposed to be inclined upward to mount the rear seat, then the rear seat can be installed on the rear vehicle body, but the rear interior space is not efficiently utilized
Solution Approach 1:
The patent introduces a vertical dimension to the floor panel design by adding forming parts that extend upward from the panel surface. This creates multiple levels (inclined upper surface and flat lower surface) within the same horizontal footprint, allowing both rear seat mounting and additional storage space utilization without increasing the vehicle's overall length or width.
Solution Approach 2:
The rear floor panel is segmented into distinct functional zones: an inclined upper surface for rear seat installation and a flat lower surface forming an accommodating space. This segmentation allows each zone to serve its specific purpose independently while sharing the same structural platform, resolving the conflict between seat mounting requirements and space utilization.
2Adaptability or versatility
If additional storage space is created in the rear interior, then the merchantability and customization are improved, but the structural complexity increases
Solution Approach 1:
The rear floor panel is designed as a multi-functional component that simultaneously serves as a mounting surface for the rear seat, a structural element of the vehicle body, and a container lid for storage. The forming parts integrated into the panel provide both structural reinforcement and the accommodating space function, eliminating the need for separate components and reducing overall system complexity.
Solution Approach 2:
The patent merges the floor panel structure with the storage container lid function by integrating the forming parts directly into the panel. This consolidation means the floor panel itself becomes the container cover, eliminating the need for separate lid structures and reducing the number of parts while adding storage functionality.
Data Source
AI summary
A rear vehicle body structure of a vehicle including an underbody and an upper body coupled to the underbody is provided. The rear vehicle body structure includes a rear floor panel provided in a rear part of the upper body and coupled to the rear part of the underbody, the rear floor panel including forming parts extending in a vertical direction from both sides of the vehicle, respectively.