Roof Drain Connection Frame Monolithic Plastic Injection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing connection units for roof drainage systems lack a robust and reliable method to secure the connection between the roof drain body and the waterproofing membrane, leading to potential separation and leakage issues.
Innovation Solution
A connection unit comprising a roof drain body, a connection frame, and a connection sleeve, where the connection sleeve is held together with the connection frame, and the roof drain body is monolithically formed from plastic by injection molding, incorporating reinforcing elements and recesses to enhance the interlocking effect and adhesion, with optional fleece application for improved bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the roof drain body is simply connected to the connection sleeve without a connection frame, then the device complexity is reduced, but the connection strength and watertight seal are insufficient
Solution Approach 1:
The connection frame is integrated with the connection sleeve to form a unified structure. The frame comprises a rear wall, side walls, and a bottom wall that together enclose the connection sleeve, creating a combined assembly that provides both structural support and sealing functionality without requiring separate components.
Solution Approach 2:
The connection frame is formed from a plastic material that is different from the roof drain body material. This allows the frame to provide specialized functions (sealing and reinforcement) while the roof drain body provides drainage functionality, creating a composite structure optimized for each component's specific purpose.
2Reliability
If plastic is injected into the connection frame channels and reinforcing elements, then the connection reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The connection frame is prepared with pre-formed channels and reinforcing elements before the injection molding process. These features are created during the frame manufacturing stage, allowing the plastic to be injected directly into predetermined paths and structures, which simplifies the overall manufacturing process while ensuring reliable connections.
Solution Approach 2:
The injection molding process replaces traditional mechanical assembly methods. Instead of separately assembling the roof drain body, connection frame, and sealing components, the plastic is injected under pressure to simultaneously bond all components together, creating an integrated structure that is more reliable and easier to manufacture.
3Reliability
If additional sealing recesses and fleece are added to the connection frame, then the watertight seal is improved, but the device complexity increases
Solution Approach 1:
The sealing recesses are integrated directly into the connection frame structure, and the fleece is positioned within these recesses to form a unified sealing system. This combination eliminates the need for separate sealing components and ensures that the watertight seal is achieved through the frame's own geometry and material properties.
4Strength
If the connection frame is formed from a different plastic than the roof drain body, then the connection strength is improved, but the manufacturing complexity increases
Solution Approach 1:
The connection frame is manufactured as a separate component with optimized plastic composition before being integrated with the roof drain body during injection molding. This preliminary formation allows each component to be optimized for its specific function while ensuring compatible materials that can be bonded together through the injection process.
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 a stable and sealed connection between the roof drain body and the waterproofing membrane, preventing separation and leakage, even under mechanical stress, while ensuring a tight seal against water penetration.
Implementation Method 1
the roof drain body is formed monolithically from a plastic by molding it onto the connection frame and the connection sleeve held by the connection frame
Implementation Method 2
the plastic has penetrated into the at least one connecting channel and/or the at least one reinforcing element and provides a reinforced connection between the roof drain body and the connection frame
Implementation Method 3
A fleece can be applied to the sleeve, particularly preferably, to further tighten the connection between the roof drain body and the sleeve during the injection molding process
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a connection unit (100) for roof drainage, comprising a connection section (110), a channel pipe section (120), a connection frame (150) and a sealing mat (130), wherein the sealing mat (130) has an opening, the edge surfaces (136) of which are held together with the connection frame (150) in the channel pipe section (120) and/or the connection section (120), wherein the connection section (110) and the channel pipe section (120) are formed monolithically from a first plastic and wherein the connection frame (150) is formed from a second plastic.