Vehicle Seat Mounting Structure for NVH and Space Optimization
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Solution Overview
Problem
In electric vehicle-based purpose-built vehicles, maximizing interior space by biasing the driver's seat towards the front while ensuring stable support, durability, and reducing noise and vibration is challenging due to the elevated seat location above the vehicle floor, which affects NVH performance and structural rigidity.
Innovation Solution
A driver's seat mounting structure comprising a seat mounting support protruding from the floor panel, coupled with a seat leg bracket, a seat cross member, and a battery passing bolt, along with reinforcements and gussets, forming a robust rectangular lattice structure to secure the seat and battery pack, enhancing structural rigidity and NVH characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the driver's seat is arranged to be biased toward the front of the vehicle to maximize interior space utilization, then the interior space utilization is improved, but the NVH performance and durability of the floor supporting structure deteriorate due to the elevated seat location
Solution Approach 1:
The floor supporting structure is segmented into multiple components: floor panel, seat mounting support, seat cross member, and battery passing bolt. This segmentation allows each component to be optimized for its specific function while collectively providing the required NVH performance and durability for the elevated front-mounted seat configuration
Solution Approach 2:
The patent employs composite structural design combining metal components (seat mounting support, cross member, bolts) with the floor panel structure. This composite approach enhances the overall rigidity and NVH characteristics of the supporting structure, enabling it to withstand the demands of the elevated seat position while maintaining interior space efficiency
2Volume of moving object
If the driver's seat is disposed at a very high location above the floor to accommodate the power train underneath, then the interior space utilization is improved, but the structural rigidity and stability of the supporting structure deteriorate
Solution Approach 1:
The seat mounting support extends vertically from the floor panel, and the seat cross member spans horizontally underneath, creating a three-dimensional rigid framework. This spatial arrangement in multiple dimensions provides structural rigidity and stability to support the elevated seat position while maintaining the required strength
Solution Approach 2:
The battery passing bolt is designed to pass through the battery pack and couple the seat cross member to the floor structure in advance, creating preliminary structural reinforcement before the seat is installed. This preliminary action ensures the supporting structure has adequate rigidity to bear the elevated seat load
Data Source
AI summary
An embodiment seat mounting structure for a vehicle includes a seat mounting support designed to protrude from an upper side of a floor panel, a seat leg bracket provided on a lower side of a seat and coupled to an upper side of the seat mounting support to fix the seat to the upper side of the seat mounting support, a seat cross member to be provided on a lower side of the floor panel to face the seat mounting support with the floor panel therebetween and arranged long in a transverse direction of a vehicle body, and a battery passing bolt configured to pass through a battery pack disposed under the floor panel and the seat cross member to be coupled to the seat cross member.