Multi-Chamber Seat Air Bag Structure for Stronger Back Massage
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Solution Overview
Problem
Existing seat devices with air bags struggle to provide sufficient force for massaging the back of a user with a simple configuration.
Innovation Solution
The air bag is designed with a first and second bag portion, each containing two air chambers and extending portions, stacked to overlap and coupled via locking pieces and a fixture-snap ring mechanism, allowing for enhanced pressing force and reduced positional shifts during expansion and contraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single air chamber is used in a simple air bag configuration, then the device complexity is low, but the pressing force applied to the user's body is insufficient
Solution Approach 1:
The air bag is divided into multiple air chambers (first air chamber, second air chamber, third air chamber) that can be independently controlled. Each chamber can be expanded or contracted separately by the control unit, allowing different pressing forces to be applied to different body regions simultaneously, thereby increasing overall pressing force capability while maintaining reasonable structural complexity
Solution Approach 2:
The air bag structure extends in multiple spatial dimensions with air chambers arranged in both width and depth directions. The first air chamber is arranged in the width direction, while the second and third air chambers are arranged in the depth direction, creating a three-dimensional pressing capability that increases force application without simply adding more chambers in one direction
2Force
If multiple air chambers are stacked to increase pressing force, then the pressing force increases, but the positional shifts between chambers during expansion and contraction increase
Solution Approach 1:
Multiple air chambers are integrated into a single air bag structure with unified control. The first, second, and third air chambers are connected through the same air supply and exhaust system, allowing them to expand and contract in a coordinated manner. This merging approach ensures that positional relationships between chambers remain stable while still providing multi-zone pressing capability
Solution Approach 2:
The air bag system incorporates dynamic control through a control unit that can independently regulate the expansion and contraction of each air chamber. This dynamic control allows the system to maintain optimal positional relationships between chambers during operation, preventing excessive positional shifts while enabling flexible pressing force adjustment
3Area of stationary object
If air chambers are arranged in multiple directions to achieve wide-range coverage, then the coverage area increases, but the device complexity increases
Solution Approach 1:
The air bag is segmented into multiple air chambers (first, second, and third chambers) that are strategically positioned to cover different body regions. The first air chamber covers the width direction, while the second and third chambers cover the depth direction, creating comprehensive coverage without requiring a single large complex structure
Solution Approach 2:
The air bag structure serves multiple functions simultaneously: it provides wide-range body coverage, applies pressing force to different regions, and maintains structural stability. The multi-chamber design allows the same air bag structure to perform both coverage and force application functions in different spatial directions
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 air bag achieves increased pressing force, wide-range coverage, and efficient massage by minimizing positional shifts and rapid expansion, while maintaining durability and manufacturing simplicity.
Implementation Method 1
a first air chamber that expands by supply of air and contracts by exhaust of air
Data Source
AI summary
An air bag includes a first bag portion including a first air chamber that expands by supply of air and contracts by exhaust of air and a first extending portion that extends from the first air chamber and a second bag portion including a second air chamber that expands by supply of air and contracts by exhaust of air and a second extending portion that extends from the second air chamber, and in a state where the first air chamber and the second air chamber are stacked so as to overlap each other, the first extending portion is coupled to the second extending portion.