Prestressed Clamping Elements for Rain-Resistant Roofing
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Solution Overview
Problem
Existing roofing solutions fail to effectively prevent rainwater accumulation and ensure stable rain protection, especially during heavy rain, due to insufficient tensioning and design limitations that allow water to collect and lead to maintenance issues and safety hazards.
Innovation Solution
A fabric-like roofing element with arc-shaped molded tensioning elements that are prestressed to create an arched shape, arranged transversely to the rolling direction, ensuring sufficient tension to prevent rainwater accumulation and allowing for efficient water runoff, even in heavy downpours, and can be used on vehicles to maximize storage space and reduce maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the roofing element is made flat and rollable, then it can be efficiently stored and transported, but it cannot effectively prevent rainwater accumulation
Solution Approach 1:
The roofing system dynamically changes shape between flat (rolled) and arched (deployed) states. The tensioning elements are elastic and can be rolled up with the fabric without damage, then automatically spring into an arched configuration when deployed to create rainwater runoff capability.
Solution Approach 2:
The physical state of the roofing changes from a flat two-dimensional configuration during storage to a three-dimensional arched configuration during use. The tensioning elements transform from a relaxed state during rolling to a prestressed arched state when deployed, fundamentally changing the geometric parameters of the roofing surface.
2Reliability
If rigid tensioning elements are used to prevent water accumulation, then rain protection is improved, but the roofing cannot be efficiently rolled up and stored
Solution Approach 1:
The tensioning elements are designed as flexible elastic members rather than rigid structures. They can be rolled up with the fabric-like roofing element without damage, yet when deployed they spring into an arched shape that effectively prevents water accumulation, combining flexibility with structural functionality.
3Reliability
If the roofing is designed with sufficient tension to prevent water accumulation, then rain protection is improved, but the tensioning elements may damage the roofing material or winding shaft when rolled up
Solution Approach 1:
The tensioning elements dynamically adjust their mechanical state. During rolling, they are in a relaxed flexible state that allows easy winding without damaging the fabric or shaft. When deployed, they automatically spring into a prestressed arched configuration that provides sufficient tension to prevent water accumulation, thus protecting material integrity while achieving rain protection.
4Reliability
If fixed arched roofing structures are used to prevent water accumulation, then rain protection is improved, but the structure cannot be extended or retracted
Solution Approach 1:
The roofing system is designed to be dynamically adjustable between extended and retracted states. The elastic tensioning elements allow the fabric to be rolled up onto a shaft for storage or extension, yet when deployed they automatically form the arched shape needed for rainwater runoff, combining the adaptability of movable structures with the rain protection of fixed arched designs.
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 stable rain protection by ensuring rainwater runs off the sides, reducing maintenance needs and safety risks, while allowing the roofing to be efficiently rolled up and stored without damaging the material, and can be adapted for various applications including vehicle roofs.
Implementation Method 1
the tensioning element being pretensioned by shaping
Implementation Method 2
The tensioning element is formed during pretensioning by shaping using mold gluing
Implementation Method 3
The clamping elements have sufficient elasticity, on the one hand to sufficiently stiffen the roofing element when extended
Implementation Method 4
the rainwater runs off the side of the roofing even in the event of heavy and sustained downpours
Data Source
AI summary
The invention relates to roofing (30), in particular as protection from sunlight or rain, comprising a roofing element (1) and a fastening device. The roofing element (1) is provided with at least one clamping element (2), said at least one clamping element (2) having a prestress due to its shaping.