Layered Cushioning Material for Reduced Peak Impact Acceleration
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Solution Overview
Problem
Existing cushioning materials for electrical devices require multiple sheets of equal thickness and strength to achieve effective shock absorption, leading to inefficiencies in impact mitigation.
Innovation Solution
A cushioning material design with alternating layers of cushioning sheets, where one layer has higher strength than the other, positioned to intersect the direction of external force, enhancing shock absorption by distributing force more effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple cushioning sheets of the same thickness and strength are stacked, then the cushioning ability is improved, but the number of sheets required increases
Solution Approach 1:
The cushioning material applies local quality by creating regions of different cushioning strengths within the stacked structure. Sheets with different strengths are alternated to create localized zones that handle different aspects of impact forces, allowing fewer sheets to achieve the same overall cushioning effect.
Solution Approach 2:
The invention uses composite materials by combining sheets of different strengths into a unified cushioning structure. This composite approach allows the stack to function as an integrated system where stronger and weaker sheets work together, improving overall cushioning performance while reducing the total number of sheets needed.
2Reliability
If many cushioning sheets are stacked to improve cushioning ability, then the impact protection is enhanced, but the structure becomes more complex
Solution Approach 1:
The cushioning structure is segmented into functional groups based on sheet strength. Rather than treating all sheets uniformly, the invention divides them into stronger and weaker categories that are strategically positioned, simplifying the design process while maintaining protective effectiveness.
Solution Approach 2:
The invention changes the parameter of sheet strength within the stack, alternating between stronger and weaker sheets. This parameter variation creates a more efficient cushioning structure that achieves better impact protection with fewer sheets, reducing overall structural complexity.
3Ease of manufacture
If uniform strength sheets are used throughout the stack, then manufacturing is simplified, but force distribution during impact is less efficient
Solution Approach 1:
Rather than using uniform sheets throughout, the invention applies local quality by positioning sheets of different strengths at different locations in the stack. This allows the structure to optimize force distribution during impact while maintaining reasonable manufacturing simplicity through standardized production of different sheet types.
Solution Approach 2:
The invention inverts the conventional approach by not using uniform sheets but rather alternating between different strength levels. This inverted strategy of varying sheet strength improves force distribution efficiency during impact, making the cushioning action more effective.
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 design absorbs impacts more efficiently, reducing peak accelerations and improving protection for electrical devices by allowing one layer to compress before the stronger layer, mimicking a half-sine wave pattern of force distribution.
Implementation Method 1
one layer to compress before the stronger layer
Implementation Method 2
mimicking a half-sine wave pattern of force distribution
Data Source
AI summary
A cushioning material includes cushioning sheets stacked on top of another and configured to reduce an external force acting on an electrical device. The cushioning sheets include a first cushioning sheet that is positioned to intersect a direction of the external force acting on the electrical device and a second cushioning sheet that has a higher strength in the direction of the external force acting on the electrical device than the first cushioning sheet and is positioned to intersect the direction of the external force acting on the electrical device.