Independent Seat Depth and Lumbar Adjustment for Seating Groups
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Solution Overview
Problem
Existing vehicle seat designs face challenges in simultaneously adjusting seat depth and lumbar support independently for each seat, often resulting in complex structures and elastic deformation issues that lead to unwanted seat movement.
Innovation Solution
A seating group configuration with independently adjustable seat depth and lumbar support for each seat, utilizing rotatable connecting frames and stationary supporting elements to allow precise and easy adjustment, with separate upholstery elements to enhance durability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If elastic deformation of spring sheet metal elements is used to adjust lumbar support, then lumbar support adjustment is achieved, but the seat part tends to be pushed back again and structural complexity increases
Solution Approach 1:
The seat is divided into independent adjustment mechanisms: a seat depth adjustment mechanism and a lumbar support adjustment mechanism. The lumbar support is segmented into multiple support sections that can be independently adjusted, eliminating the need for complex elastic deformation of spring sheet metal elements while maintaining adjustment functionality.
Solution Approach 2:
The problematic elastic deformation mechanism is extracted and replaced with a direct mechanical adjustment system. The lumbar support adjustment is taken out from the seat part structure and implemented as a separate, controlled mechanism that prevents unwanted seat movement while reducing overall structural complexity.
2Adaptability or versatility
If simultaneous adjustment of seat depth and lumbar support is implemented, then user comfort is improved, but device complexity increases
Solution Approach 1:
The seat depth adjustment and lumbar support adjustment are merged into a coordinated system where both adjustments can be performed simultaneously through integrated control. The connecting frame mechanism combines both adjustment functions, allowing the seat part and backrest part to move in a coordinated manner to achieve both adjustments at the same time.
Solution Approach 2:
The adjustment mechanism is designed with multi-functionality, where the same mechanical structure serves both seat depth adjustment and lumbar support adjustment purposes. The connecting frame and supporting elements perform multiple functions, reducing the need for separate dedicated mechanisms for each adjustment type.
3Adaptability or versatility
If independent adjustment for each seat is provided, then user customization is improved, but device complexity increases
Solution Approach 1:
The seating group is segmented into independent seat units, each with its own adjustment mechanisms. The first seat and second seat are structurally independent, allowing each to be adjusted without affecting the other, while sharing common supporting elements to reduce overall complexity.
Solution Approach 2:
Each seat position is equipped with local adjustment capabilities tailored to that specific seat. The first seat has its own seat depth and lumbar support adjustments, and the second seat has its own independent adjustments, allowing customization for each user position while maintaining a unified overall structure.
Data Source
AI summary
A seating group comprising a first seat and a second seat arranged side by side and each adjustable in seat depth and lumbar support, each comprising a seat part and a backrest part. It may be provided that the first seat and the second seat are each formed and provided for simultaneous adjustment of a seat depth and a lumbar support, wherein the seating group is formed such that the first seat and the second seat are adjustable independently of each other in the respective seat depth and lumbar support.