Composite Cushion with Interlocking Peripheral Engagement
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Solution Overview
Problem
Existing composite cushions lack efficient integration of cushioning elements to optimize weight distribution and structural support, often resulting in either excessive weight or inadequate support under varying forces.
Innovation Solution
A composite cushion design featuring a first cushioning element with columnar cells and a second cushioning element that mechanically engages the peripheral engagement features of the first element, allowing for a lightweight yet effective distribution of forces through complementary materials and structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heavy cushioning materials are used to provide effective support and resistance, then cushioning performance is improved, but weight increases
Solution Approach 1:
The cushion is divided into multiple columnar cells arranged in an array, where each cell independently buckles under load. This segmentation allows the cushion to achieve effective support through the collective behavior of many lightweight cellular structures rather than using solid heavy material throughout.
Solution Approach 2:
The cushion combines different materials with complementary properties: a viscoelastic material providing shear resistance and a foam material providing compressive support. This composite approach enables the cushion to achieve both support and resistance functions with reduced weight compared to using单一 heavy material.
2Ease of manufacture
If the cushion structure is simplified for ease of manufacture, then manufacturing complexity is reduced, but force distribution effectiveness deteriorates
Solution Approach 1:
The peripheral engagement area includes discrete engagement features spaced apart at various locations, which can be integrated into standard molding processes. This segmented approach to engagement features maintains force distribution effectiveness while accommodating conventional manufacturing methods.
Solution Approach 2:
The cushion employs different structural characteristics in different regions: the central cushioning area contains the columnar cells for force distribution, while the peripheral engagement area contains engagement features for mechanical connection. This local differentiation optimizes each region's function without significantly increasing overall manufacturing complexity.
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 provides a lightweight composite cushion that maintains the benefits of heavy cushioning materials while offering enhanced support and resistance, allowing for buckling under focused forces while distributing forces effectively.
Implementation Method 1
The first cushioning material, as well as the thicknesses of the walls, may enable the columnar cushioning cells to buckle
Implementation Method 2
The peripheral engagement area may include engagement features that are spaced apart from one another at various locations outside of the central cushioning area
Data Source
AI summary
A composite cushion includes a first cushioning element and a second cushioning element. The second cushioning element is formed in a manner that engages a peripheral engagement are of the first cushioning element to interlock the second cushioning element onto the first cushioning element. The second cushioning element may surround an outer periphery of the first cushioning element. In addition, a portion of the second cushioning element may be superimposed over a central cushioning area of the first cushioning element. Any superimposed central portions of the first and second cushioning elements may have an unsecured relationship (i.e., they are not directly secured to each other).