Grooved Hollow Cushioning Sheet for Stable Compression Force
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Solution Overview
Problem
Existing cushioning sheets fail to maintain a stable reaction force as they rapidly increase with compression, and protruding portions may lose orientation when compressed, leading to instability.
Innovation Solution
A cushioning sheet design with protruding portions featuring internal cavities and grooves on the inner or outer surfaces that act as deformation starting points, stabilizing the orientation during compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the compression amount is increased to generate the desired reaction force, then the reaction force increases, but the reaction force increases rapidly and becomes unstable
Solution Approach 1:
The protruding portion is divided into multiple functional zones: a hollow cavity portion for compression deformation, a groove portion that serves as a deformation starting point, and a flat plate portion for structural support. This segmentation allows the compression force to be distributed and controlled, preventing rapid and unstable reaction force increases while maintaining stable orientation during compression.
2Force
If protruding portions are made hollow to suppress rapid increase in reaction force, then the reaction force increase is suppressed, but the protruding portions may not maintain the desired orientation when compressed
Solution Approach 1:
A groove is pre-formed on the outer surface of the protruding portion at a predetermined position. This groove acts as a predetermined deformation starting point that guides the compression deformation to occur in a controlled manner. By preparing this deformation pathway in advance, the protruding portion maintains its desired orientation during compression while still achieving the suppressed reaction force increase through the hollow cavity structure.
3Shape
If a groove is provided on the outer surface of the protruding portion, then the orientation is stabilized during compression, but the manufacturing complexity increases
Solution Approach 1:
The groove formation process is merged with the existing molding process used to create the protruding portions. The groove is formed as an integrated feature during the same manufacturing step, eliminating the need for separate post-processing operations. This approach stabilizes the orientation during compression while avoiding significant increases in manufacturing complexity, as the groove is created concurrently with the main structural features.
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 ensures a stable reaction force and maintains orientation of the protruding portions, even under varying compressive forces, enhancing the cushioning sheet's versatility and effectiveness.
Implementation Method 1
at least one of an inner surface and an outer surface of the protruding portion is provided with a groove that serves as a deformation starting point when the protruding portion is compressed and deformed
Implementation Method 2
This cushioning sheet is made of an elastic body and generates an elastic reaction force against the load acting from the item
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A cushioning sheet (100, 100A) having an elastic body and including a flat plate (110, 110A), and a plurality of protruding portions (120, 120A) that protrudes from the flat plate, an interior of each protruding portion being a cavity (120X) that opens in an opposite direction to a protrusion direction, wherein at least one of an inner surface and an outer surface of the protruding portion is provided with a groove (125, 126) that serves as a deformation starting point when the protruding portion is compressed and deformed.