Compact Lumbar Mechanism Using Vertical Bridge Layout
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern vehicle seating systems face space constraints due to integrated features like adjustable lumbar systems, ventilation, and articulation systems, which limit size and positioning variability across different vehicle lines.
Innovation Solution
A compact mechanical lumbar system with a 4-way adjustable design, utilizing an inverted U-shaped lower bridge member that positions motors vertically higher and allows lumbar support below them, with legs extending below the lower frame cross member, enabling efficient space use and accommodating varying occupant needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional lumbar support systems are integrated into vehicle seating, then lumbar support functionality is provided, but space within the vehicle seating is occupied and size/shape variability is limited
Solution Approach 1:
The lumbar support system utilizes the vertical dimension by positioning motors higher in the seat back and allowing bridge members to extend vertically along the seat back frame. This vertical arrangement enables the lumbar support to be positioned below the motors while still providing adequate support, effectively using the vertical space that would otherwise be underutilized in traditional horizontal layouts.
Solution Approach 2:
The system divides the lumbar support structure into separate functional components: motors positioned at one vertical level, bridge members extending vertically, and lumbar support elements positioned at lower levels. This segmentation allows each component to be optimized for its specific function while collectively occupying less overall space within the seating structure.
2Adaptability or versatility
If standardized components are used across multiple vehicle lines, then manufacturing cost is reduced and commonality is provided, but space allocation variability among vehicle lines cannot be accommodated
Solution Approach 1:
The lumbar support system is designed with vertically extendable bridge members that can accommodate different space allocations across various vehicle lines. The same standardized component can be installed in vehicles with different seat back dimensions by adjusting the vertical position and extension of the bridge members, allowing one design to serve multiple vehicle platforms with varying space requirements.
Solution Approach 2:
The system incorporates adjustable and movable components that can be positioned at different vertical locations along the seat back. This dynamic positioning capability allows the standardized lumbar support system to adapt to different space allocations in various vehicle lines without requiring custom designs for each vehicle platform.
Data Source
AI summary
A mechanical lumbar system for vehicle seating. The lumbar system may be compact in size so as to require a smaller space within vehicle seating. The lumbar system may be adjustable in 4-ways. The lumbar system may be adjustable in an in and out fashion so as to decrease and increase, respectively, the amount of lumbar support. The lumbar system may be adjustable vertically so as to allow the vertical position of the lumbar support to be moved to accommodate the occupant. The lumbar system may utilize a U-shaped lower bridge member that allows the motors to be positioned vertically higher in the seat back while also allowing the lumbar support to be positioned below the motors. The legs of the lower bridge may extend below the lower frame cross member in the vehicle seat.