Connection Profile for Plaster Adjacent Components
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Solution Overview
Problem
Existing connection profiles for components adjacent to plaster face challenges in achieving a permanent, tight seal during relative movements between the plaster and built-in parts, often requiring increased pre-tension that complicates installation and can lead to detachment issues when plastering is delayed.
Innovation Solution
A connection profile with a sealing flange projecting from the inner leg, which slides and seals onto the outer leg or plastering leg, is produced as a one-piece extrudate and attached using co-extrusion, minimizing pre-tension and allowing for easy installation before plastering, with a U-shaped receptacle for the flange to accommodate larger movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing lips with increased pre-tension are used to ensure reliable sealing during relative movement, then sealing reliability is improved, but installation difficulty increases and detachment issues occur when plastering is delayed
Solution Approach 1:
The sealing element is divided into two functional parts: a sealing lip for initial sealing and a sealing flange for movement compensation. The sealing lip provides initial sealing with minimal pre-tension for easy installation, while the sealing flange engages with the U-shaped receptacle to maintain sealing during relative movements, separating the functions of initial sealing and movement compensation.
Solution Approach 2:
The sealing flange is designed to move dynamically within the U-shaped receptacle to accommodate relative movements between plaster and built-in parts. The flange can slide along the receptacle walls and rotate slightly, providing adaptive sealing that responds to dimensional changes without requiring high pre-tension.
2Reliability
If sealing lips with increased pre-tension are used to ensure sealing during relative movement, then sealing reliability is improved, but the connection profile may detach from the component
Solution Approach 1:
The sealing function is segmented between the sealing lip (for initial sealing) and the sealing flange (for movement compensation). The sealing flange engages mechanically with the U-shaped receptacle, distributing forces away from the adhesive bond at the inner leg, thereby preventing detachment while maintaining sealing reliability during relative movements.
Solution Approach 2:
The sealing flange acts as an intermediary element between the connection profile and the plaster/built-in part interface. It provides a mechanical engagement system that mediates the forces generated during relative movements, protecting the adhesive bond at the inner leg from excessive stress.
3Adaptability or versatility
If a sealing flange with U-shaped receptacle is used to accommodate larger movements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The sealing flange and U-shaped receptacle are merged into a single integrated component, both produced as one-piece extrudates. This integration reduces the number of separate parts and assembly steps while maintaining the adaptability to accommodate larger movements through the flange's engagement with the receptacle.
4Reliability
If sealing lips with increased pre-tension are used, then sealing reliability is improved, but manufacturing and assembly become more difficult
Solution Approach 1:
The sealing lip and sealing flange are merged into a single integrated extrudate, produced in one manufacturing step. This eliminates the need for separate assembly operations and reduces manufacturing complexity while maintaining sealing reliability through the combined functionality of both sealing elements.
Solution Approach 2:
The integrated sealing lip-flange structure serves multiple functions: initial sealing, movement compensation, and force distribution. This multi-functionality reduces the need for additional components and simplifies both manufacturing and assembly processes while maintaining reliable sealing under various conditions.
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
Ensures a permanent, tight seal with reduced pre-tension during assembly, allowing for easy installation before plastering and effective sealing even with larger relative movements between the component and plaster.
Implementation Method 1
An elastic sealing strip is arranged between the inner leg and the outer leg, which is suitable for at least partially compensating for component movements between the plaster and the component
Implementation Method 2
the inner leg, which is fixed to the component with an adhesive layer or an adhesive tape
Implementation Method 3
The sealing lip and the sealing flange are produced as a one-piece extrudate and are attached to the inner leg by co-extrusion
Data Source
Figure 1a~1c
Figure 2a~2b
Figure 3~4
AI summary
The invention relates to a connection profile (10) for components (30) adjacent to plaster (31), in particular for window or door frames, with a two-part base leg (11, 12), the inner leg (11) of which has component-side fastening means and is connected to an outer leg (12) aligned parallel to the inner leg (11), wherein the outer leg (12) has a plastering leg (13) projecting substantially perpendicularly thereto, as well as a plastering bead (14) with a plastering edge (15). According to the invention, an elastic sealing strip (16) is arranged between the inner leg (11) and the outer leg (12), which is suitable for at least partially compensating component movements between the plaster and the component, wherein the inner leg (11), which is fixed to the component (30) with an adhesive layer or adhesive tape (17), has a sealing lip (20) that rests against the component (30).