Inflatable Pad Cell Layout for Lower Fill Volume and Better Support
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Solution Overview
Problem
Conventional inflatable camping pads are inefficient in terms of fill volume and effort required for inflation, often failing to provide adequate support and insulation due to uniform distribution of air, and are heavy and bulky, while non-inflatable pads are heavier and lack comfort.
Innovation Solution
The design incorporates an inflatable pad with varying thickness and spacing of support members to reduce fill volume, featuring primary and secondary support regions with different fill volumes per unit area, and includes a frame structure with non-supporting regions to minimize torsion and weight, allowing for easier inflation and greater comfort with a thinner, lighter pad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform air distribution is used throughout the pad, then comprehensive support is provided, but fill volume and inflation effort increase significantly
Solution Approach 1:
The pad divides the support structure into multiple independent cells with varying volumes. Primary support cells (shoulders, hips, head) have larger volumes to provide elevated support, while secondary support cells (back, legs) have smaller volumes. This local differentiation reduces total fill volume while maintaining necessary support at critical body regions.
2Ease of operation
If thicker pad construction is used to provide adequate support, then comfort and insulation improve, but weight and bulk increase
Solution Approach 1:
The pad is segmented into multiple independent inflatable cells rather than a single uniform thickness structure. Each cell can be inflated to appropriate pressure independently, providing localized support and insulation where needed while keeping overall pad thickness reduced for portability.
Solution Approach 2:
Different regions of the pad have different cell volumes and support characteristics. Primary support regions (shoulders, hips, head) use larger volume cells for elevated comfort, while secondary regions use smaller cells, creating a non-uniform thickness profile that optimizes comfort without maximizing overall weight.
3Reliability
If higher inflation pressure is used, then support and insulation efficiency improve, but inflation difficulty increases
Solution Approach 1:
The support structure is divided into multiple independent cells that can be inflated separately. This segmentation allows progressive inflation where air can be distributed to different cells in sequence, reducing the peak pressure required at any single moment compared to inflating a single large chamber.
Solution Approach 2:
Different cells are designed with different volumes and support requirements. Primary support cells can be inflated to higher pressures for critical body regions, while secondary cells use lower pressures, allowing optimized support quality without uniformly high inflation difficulty across the entire pad.
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 solution reduces the effort and time needed for inflation, provides greater comfort and support by concentrating air in high-pressure regions, and minimizes weight and bulk, while maintaining insulation and protection from the ground.
Implementation Method 1
When a fill valve for such a type of camping pad is opened, the compressed foam (from the deflated state) begins to expand and naturally inflates the mattress
Implementation Method 2
A fill valve is opened and air is forced in under positive pressure by mouth, typically, to inflate the camping pad a desired amount
Data Source
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AI summary
The inflatable pad includes an inflatable frame having a length and width that defines a pad area suitable for supporting a person lying thereon. A plurality of internal support members are configured to support the weight of a person lying thereon and elevate the person above the ground. The inflatable pad includes non- supporting regions that require less fill volume than regions that support primary support regions such as the hips and shoulder.