Vehicle Seat Air Spring Level Stabilization Without Compressor Noise
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Solution Overview
Problem
Conventional vehicle seat level regulation systems using compressors are noisy and inefficient, leading to unbearable background noise and insufficient dynamic level regulation due to slow actuation and prolonged compressor operation.
Innovation Solution
A vehicle seat system with an air spring connected to a working volume module, where a control unit dynamically adjusts the volume of the working volume to maintain a constant distance from the ground surface by changing air spring pressure in response to relative movements between the seat parts, eliminating the need for a compressor and ensuring quiet and rapid level stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a compressor is used to regulate the internal pressure of the air spring, then the level regulation function is achieved, but the compressor produces loud background noise and operates slowly
Solution Approach 1:
The patent extracts and eliminates the compressor from the system by using a passive air spring design that relies on the natural elasticity of the air spring itself for level regulation, rather than actively compressing air with a noisy compressor device
Solution Approach 2:
The air spring performs self-regulation of its internal pressure through its elastic properties and automatic adjustment mechanisms, eliminating the need for external compressor assistance and the associated noise
2Stability of the object's composition
If a compressor is used to maintain constant distance between seat parts, then level stability is achieved, but the actuation is slow and insufficient for rapid regulation
Solution Approach 1:
The patent implements a dynamic level regulation system where the air spring automatically and rapidly adjusts its pressure in response to changes in vehicle posture or load, eliminating the slow actuation characteristics of compressor-based systems
Solution Approach 2:
The system incorporates feedback mechanisms that detect changes in seat position or vehicle attitude and automatically trigger air spring pressure adjustments, enabling rapid closed-loop control without compressor delay
3Reliability
If the compressor operates frequently to maintain predetermined distance, then level regulation is maintained, but the compressor produces unbearable noise and health issues
Solution Approach 1:
The compressor is completely removed from the system and replaced with a compressorless air spring design that maintains level regulation through passive elastic mechanisms and automatic pressure equalization
Solution Approach 2:
The patent converts the potential harm of frequent compressor operation into benefit by using the air spring's natural elasticity and automatic adjustment capabilities to achieve the same regulatory function without noise or health hazards
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system maintains a constant seat height relative to the ground surface, reducing noise and enabling rapid and dynamic level regulation without compressor noise, ensuring comfort and effective vibration isolation during various driving conditions.
Implementation Method 1
an air spring by means of which a movement of the vehicle seat lower part and of the vehicle seat upper part relative to one another can be spring-loaded
Implementation Method 2
decrease the volume of the working volume in the event of an increase in the distance due to the relative movement such that a pressure in the air spring can be changed
Data Source
AI summary
A device for level regulation and level stabilization of a vehicle seat upper part. The device includes an air spring that spring loads a movement of the vehicle seat lower part and of the vehicle seat upper part relative to one another, the vehicle seat lower part and the vehicle seat upper part are arranged in a non-deflected state at a predeterminable distance from one another. The air spring is fluidically connected to a working volume of an additional volume module. A control unit decreases the volume of the working volume in the event of an increase in the distance and increases the volume of the working volume in the event of a decrease in the distance such that the pressure in the air spring can be changed such that the distance between the vehicle seat upper part and a reference surface is substantially unchanged.