Connection Profile with Detachable Sealing Legs for Plaster
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Solution Overview
Problem
Connection profiles for components like window frames and door frames face issues with high tensile and compressive stresses due to thermal changes, leading to potential plaster cracks or separation of the sealing tape, which can result in moisture penetration.
Innovation Solution
A connection profile design featuring a front sealing leg connected via a sealing loop to the plastering leg, with a rear sealing leg that detaches from the sealing tape when a predetermined tensile force is reached, allowing the front sealing leg to maintain contact and ensuring flexibility and tightness, while minimizing forces on the sealing tape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the connecting profile uses a rigid sealing tape connection, then the structural strength is improved, but the flexibility to withstand thermal stresses deteriorates
Solution Approach 1:
The sealing connection is divided into two independent sealing legs (front and rear) instead of a single rigid connection. Each sealing leg can independently respond to thermal stresses, allowing the system to maintain both strength and flexibility. The front sealing leg provides primary sealing while the rear sealing leg provides secondary support that can detach under excessive stress.
Solution Approach 2:
The connection transitions from a permanently rigid state to a dynamically adaptable state where the rear sealing leg can detach when thermal stresses exceed a certain threshold. This parameter change allows the system to maintain rigidity under normal conditions while gaining flexibility under extreme thermal expansion or contraction.
2Adaptability or versatility
If the connecting profile is made flexible to withstand thermal stresses, then the adaptability is improved, but the structural strength deteriorates
Solution Approach 1:
The sealing system is segmented into front and rear sealing legs with different functional roles. The front sealing leg maintains continuous contact for primary sealing and structural support, while the rear sealing leg provides secondary support that can detach under excessive stress, preventing damage to the primary sealing connection.
Solution Approach 2:
The rear sealing leg acts as a protective mechanism that detaches beforehand when thermal stresses reach critical levels, preventing excessive forces from damaging the front sealing leg or the plaster connection. This sacrificial element cushions the system against extreme thermal expansion or contraction.
3Stability of the object's composition
If the sealing tape is subjected to high forces, then the structural stability is improved, but the reliability of the seal deteriorates due to detachment
Solution Approach 1:
The sealing function is distributed across two sealing legs rather than concentrated in a single tape connection. This segmentation ensures that if one sealing leg detaches under high forces, the other maintains the seal, thereby maintaining both structural stability and seal reliability.
Solution Approach 2:
The front and rear sealing legs are positioned at different locations along the connecting profile to provide localized sealing support. The front sealing leg handles normal sealing duties while the rear sealing leg provides additional support that activates under high stress conditions, creating a graduated response to different load levels.
4Device complexity
If a single sealing leg is used, then the device complexity is reduced, but the ability to minimize forces on the sealing tape deteriorates
Solution Approach 1:
The sealing function is divided between front and rear sealing legs, with the rear sealing leg designed to detach under excessive stress. This segmentation allows the system to minimize forces on the sealing tape by allowing controlled detachment, while adding only moderate complexity to the overall structure.
Solution Approach 2:
The rear sealing leg functions as a sacrificial element that can detach under excessive stress, protecting the more critical front sealing leg and plaster connection. This disposable-like approach minimizes forces on the permanent sealing components while adding minimal complexity to the system.
Data Source
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AI summary
The invention relates to a connection profile (1) for building components (2) adjacent to plaster, such as window or door frames, reveals, roller shutters, or the like, comprising a plastering leg (3) against which the plaster rests, and a retaining leg (4) connected to the plastering leg (3), as well as a sealing strip (5) attached to the retaining leg (4) and with which the connection profile (1) can be fastened to the building component (2). According to the invention, a front sealing leg (6) is attached to the sealing strip (5), which is connected to the plastering leg (3) via a sealing loop (7), and the retaining leg (4) comprises a rear sealing leg (8) which, viewed from the plastering leg (3), lies behind the front sealing leg (6) and is attached to the sealing strip (5).