Hat-Shaped Absorbing Tile Underlayment for Fall Impact Distribution
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Solution Overview
Problem
Current underlayment systems in elder care facilities fail to effectively reduce fall-related injuries, as they are either too soft, prone to compression, or increase system cost and installation complexity, while also lacking durability and compatibility with various flooring types.
Innovation Solution
A load distribution and absorption system comprising interlocking tiles with a barrier layer and absorbing members, where the barrier layer provides load distribution and the absorbing members absorb forces, featuring a continuous curvilinear wall for energy absorption and transition features to accommodate tiles of different heights, made from resilient materials like polycarbonate and thermoplastic polyurethane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If soft underlayment materials are used to reduce fall impact forces, then injury risk reduction is improved, but compression resistance and durability deteriorate
Solution Approach 1:
The underlayment system combines a rigid barrier layer (polycarbonate or similar) with resilient absorbing members (thermoplastic polyurethane or similar) to create a composite structure that provides both impact force distribution and compression resistance, resolving the contradiction between softness for injury reduction and strength for durability
Solution Approach 2:
The underlayment is divided into discrete absorbing members distributed across the barrier layer, allowing each component to specialize in one function (barrier layer for structural integrity and compression resistance, absorbing members for impact force reduction), thereby achieving both injury risk reduction and compression resistance
2Adaptability or versatility
If transition features are added to accommodate tiles of different heights, then ADA accessibility and comfort are improved, but device complexity increases
Solution Approach 1:
Instead of adding complex transition structures between tiles of different heights, the barrier layer is designed to extend beyond the absorbing members, creating an inverted approach where the barrier layer itself serves as the transition element, smoothly bridging height differences without additional components
Solution Approach 2:
The barrier layer performs multiple functions: it provides structural support, distributes loads, and simultaneously serves as a transition feature between tiles of different heights, eliminating the need for separate transition components and reducing overall system complexity
3Object-affected harmful factors
If resilient materials are used for load absorption, then injury risk reduction is improved, but material cost increases
Solution Approach 1:
Resilient absorbing members are placed only in specific locations where impact absorption is needed, rather than using expensive resilient materials throughout the entire underlayment structure, thereby reducing overall material cost while maintaining injury protection effectiveness
Solution Approach 2:
The design uses cost-effective thermoplastic polyurethane or similar affordable resilient materials for the absorbing members, replacing expensive traditional underlayment materials while achieving the required impact absorption performance
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 system significantly reduces the risk of injuries from falls, maintains durability and affordability, facilitates easy installation, and meets ADA accessibility requirements, providing enhanced comfort and sound absorption while withstanding daily traffic and impacts.
Implementation Method 1
absorbing members (22) made from resilient materials like polycarbonate and thermoplastic polyurethane
Implementation Method 2
barrier layer provides load distribution
Data Source
AI summary
A load distributing and absorbing system that lies below a barrier layer that is exposed to percussive and/or point-applied forces. The load distributing and absorbing system has one or more load distributing and absorbing tiles. At least some of the tiles have an underlayment infrastructure positioned below a barrier layer. The underlayment infrastructure includes one or more hat-shaped absorbing members. Each has a ceiling primarily for load distribution and a curvilinear wall primarily for load absorption extending from the ceiling. A transition feature is provided to smoothly graduate from one height and type of load distributing and absorbing tile to a load distributing and absorbing tile of another type and height. He system distributes and absorbs forces applied to the barrier layer over a broad area when applied either on a seam between adjacent tiles or within a tile.