Dual-Seat Adjustment Mechanism for Stable Lumbar and Depth Control
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Solution Overview
Problem
Existing vehicle seat designs that adjust seat depth and lumbar support simultaneously often result in structural complexity and instability, as they rely on elastic deformation of spring plate elements, leading to unintended backward movement of the seat.
Innovation Solution
A seating group with two adjacent seats, each comprising a seat part and backrest part, allowing independent adjustment of seat depth and lumbar support through rotatable connecting frames and support elements, ensuring stable and precise adjustment without the need for elastic deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If spring plate elements are used for simultaneous seat depth and lumbar support adjustment, then both functions can be achieved, but the seat part tends to be displaced backward and the structure becomes complex
Solution Approach 1:
The adjusting mechanism is divided into two independent subsystems: a seat depth adjusting mechanism with its own actuator and a lumbar support adjusting mechanism with its own actuator. Each mechanism operates independently through separate adjustment elements, eliminating the need for complex spring plate elements that combine both functions in a single system.
2Adaptability or versatility
If spring plate elements are used for simultaneous seat depth and lumbar support adjustment, then both functions can be achieved, but the seat part tends to be displaced backward
Solution Approach 1:
The adjusting mechanism is divided into two independent subsystems: a seat depth adjusting mechanism with its own actuator and a lumbar support adjusting mechanism with its own actuator. Each mechanism operates independently through separate adjustment elements, eliminating the need for complex spring plate elements that combine both functions in a single system.
Solution Approach 2:
A connecting frame is introduced as an intermediary component that couples the seat part and backrest part. This connecting frame provides stable mechanical linkage during adjustment operations, preventing unintended backward movement of the seat part while enabling coordinated adjustment of seat depth and lumbar support.
3Ease of operation
If independent adjustment of seat depth and lumbar support is implemented, then each seat can be adjusted independently, but the structure becomes more complex
Solution Approach 1:
The adjusting mechanism is divided into two independent subsystems: a seat depth adjusting mechanism with its own actuator and a lumbar support adjusting mechanism with its own actuator. Each mechanism operates independently through separate adjustment elements, eliminating the need for complex spring plate elements that combine both functions in a single system.
Solution Approach 2:
The connecting frame serves multiple functions: it couples the seat part and backrest part, provides stable mechanical linkage during adjustment, and enables both seat depth and lumbar support adjustment operations. This multi-functional design reduces the need for additional separate components.
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2A~2B
AI summary
A seating group comprising a first seat (2) and a second seat (3), which are arranged side by side and are each adjustable in seat depth and lumbar support, each comprising a seat section and a backrest section. It may be provided that the first seat and the second seat are each designed and intended for simultaneous adjustment of seat depth and lumbar support, wherein the seating group is designed such that the first seat and the second seat are independently adjustable in their respective seat depth and lumbar support.