Vehicle Seat Support Closed-Section Structure for High Stiffness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle seats with seat supports increase in size and weight due to the number of components required for stiffness, necessitating a reduction in size or weight while maintaining stiffness and compact component arrangement.
Innovation Solution
A conveyance seat design featuring right and left foot members attached to the body floor with a gap, linked by a foot linking member that forms a closed section structure using opposing and side wall portions, with reinforcement and weld marks to enhance stiffness and assembly workability, and utilizing existing components to minimize weight and component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple cover members and cross members are attached to front and rear leg portions to increase stiffness, then the stiffness of the seat support is improved, but the number of components increases and the seat support increases in size and weight
Solution Approach 1:
The patent merges the functions of multiple separate components (cover members and cross members) into a single integrated seat support structure. The left and right seat support members are continuously formed as one piece, eliminating the need for separate covering components and cross members, thereby reducing component count while maintaining structural stiffness.
Solution Approach 2:
The seat support members are designed to perform multiple functions simultaneously: they provide structural support, maintain stiffness, and serve as the covering structure itself. The continuous formation of left and right support members allows them to fulfill both load-bearing and protective covering functions without requiring additional specialized components.
2Strength
If multiple cover members and cross members are attached to front and rear leg portions to increase stiffness, then the stiffness of the seat support is improved, but the seat support increases in size and weight
Solution Approach 1:
By combining multiple separate components into a single continuously formed seat support structure, the total material usage is optimized. The integrated design eliminates redundant materials and connections, reducing the overall weight of the seat support while preserving the necessary stiffness through the continuous structural form.
3Strength
If multiple cover members and cross members are attached to front and rear leg portions to increase stiffness, then the stiffness of the seat support is improved, but the arrangement of components becomes less compact
Solution Approach 1:
The continuous formation of left and right seat support members integrates what would otherwise be separate spatial components into a unified structure. This merging reduces the overall spatial footprint and allows for a more compact arrangement within the vehicle interior, while the continuous structure itself provides the necessary stiffness.
Data Source
AI summary
A seat support of the conveyance seat includes right and left front foot members that are attached to a body floor with a gap therebetween in a seat width direction and extend to protrude upward from the body floor and a foot linking member that links the upper portions of the right and left front foot members and is disposed to partially overlap the right and left front foot members in the up and down direction. A closed section structure is formed by an opposing wall portion disposed at a position opposing the foot linking member in an up and down direction, right and left side wall portions continuously bent from both end portions of the opposing wall portion in a seat width direction and protruding to abut toward the foot linking member in the front foot member, and the foot linking member.