Elastomeric Roof Drain Angle with Sealing Foil
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Solution Overview
Problem
Existing drainage devices for flat roofs with attics are difficult to install and require complex sealing and alignment due to unevenness, and existing solutions do not efficiently integrate with existing sealing foils or provide stable outlet connections.
Innovation Solution
A component comprising a thermoplastic elastomer angle part with a connected sealing foil and a support ring, which accommodates a connecting pipe and stabilizes the outlet connection, allowing for easy integration with existing sealing foils and compensating for unevenness, and can be produced as a one-piece injection molded part or assembled through gluing/welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional drainage devices are installed on flat roofs with attics, then drainage function is achieved, but installation complexity increases due to uneven surfaces and alignment requirements
Solution Approach 1:
The drainage device is divided into separate functional components: a plate-shaped part for mounting, a drain pipe for water conveyance, a disc-shaped ring for socket engagement, and a sealing foil for waterproofing. This segmentation allows each component to be optimized independently and simplifies the overall installation process by enabling modular assembly.
Solution Approach 2:
The sealing foil is designed to be adaptable to surface unevenness through material selection and geometric design, allowing it to conform to varying roof surfaces. The elastomeric material of connection pieces can deform to compensate for dimensional variations, maintaining effective sealing and connection without requiring precise alignment.
2Reliability
If sealing foils are integrated into the drainage component, then sealing effectiveness improves, but manufacturing complexity increases
Solution Approach 1:
The sealing foil is pre-cut and pre-shaped to match the required geometry before final assembly. This preliminary preparation ensures proper sealing geometry is achieved without requiring complex real-time adjustments during installation, and allows the sealing foil to be manufactured separately using optimized processes.
Solution Approach 2:
The drainage device combines different materials with complementary properties: rigid materials (metal or plastic) for structural components like the plate and drain pipe, and flexible sealing materials (foil and elastomers) for sealing and adaptation. This composite approach maintains manufacturing simplicity for each material type while achieving reliable sealing performance.
3Adaptability or versatility
If outlet connection pieces are made of elastomeric material, then adaptability to unevenness improves, but structural stability decreases
Solution Approach 1:
The outlet connection piece featuring elastomeric material is nested within or supported by a more stable structural component such as a disc-shaped ring or support structure. This nested arrangement allows the elastomeric portion to provide adaptability and sealing while the outer support structure maintains structural stability and positional accuracy.
Solution Approach 2:
The outlet connection assembly combines elastomeric material for adaptability with rigid or semi-rigid support structures for stability. The elastomeric material deforms to accommodate surface unevenness while the supporting structure maintains the overall geometry and connection integrity, achieving both adaptability and stability simultaneously.
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
Facilitates easy and stable installation of drainage devices on flat roofs with attics by compensating for unevenness and providing a secure, integrated sealing solution, reducing assembly effort and ensuring effective water drainage.
Implementation Method 1
The elastomer material of the angle part enables unevenness in the horizontal and vertical connection areas to be compensated for
Implementation Method 2
The component can be produced as a one-piece injection molded part
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
Component (1) for a drainage device for a flat roof (9) with parapet (11), comprising an angled part (2) which includes a first leg (6) and a second leg (7), the outer surface (8) of the first leg (6) being able to be arranged on the top of the flat roof (1), the outer surface (10) of the second leg (7) being able to be arranged on the parapet (11), the second leg (7) having an opening (12), the angled part (2) being made of or comprising an elastomeric material, a sealing membrane (3) being connected to the angled part (2) and extending at least partially over the inner surfaces (13, 14) of the legs (6, 7), and a drain outlet (4) being connected to the angled part (2) and extending away from the opening (12) in the second leg (7) of the angled part (2).