Prefabricated Window Element for Non-Destructive Joint Seal Release
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Solution Overview
Problem
Existing prefabricated building elements with window reveals or frames face issues in the non-destructive release of joint sealing strips, leading to potential damage, contamination, and installation errors, which are exacerbated by the destructive nature of prior art methods.
Innovation Solution
A prefabricated building element with a circumferential joint sealing strip held in a compressed state by a removable holding means, allowing non-destructive release during installation, ensuring the strip remains intact and facilitating error-free assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a destructive holding part is used to release the sealing strip, then the sealing strip can be released from the window frame, but the sealing strip may be damaged and the construction site is contaminated by fragments
Solution Approach 1:
The patent employs a disposable holding part made of brittle material that is intentionally designed to break cleanly into manageable fragments. This holding part is applied only during installation and then discarded, eliminating the need for reuse and preventing contamination of the sealing strip. The controlled destruction of this inexpensive component solves the contradiction by prioritizing sealing strip integrity over holding part reusability.
Solution Approach 2:
The holding part serves as an intermediary element between the sealing strip and the window frame. It provides temporary retention during installation and can be removed through controlled destruction, acting as a mediator that facilitates the release process without directly damaging the sealing strip. The brittle material ensures clean breakdown into non-contaminating fragments.
2Reliability
If the holding part is destroyed to release the sealing strip, then the sealing strip can be released, but time-consuming cleanup follows and fragments may remain in the joint
Solution Approach 1:
The holding part is designed as a single-use component that is discarded after serving its temporary retention function. By making it disposable and designed to break into manageable fragments, the patent eliminates extensive cleanup requirements. The small, controlled fragments do not interfere with the joint or require removal, thus minimizing time loss while ensuring reliable sealing strip release.
3Ease of manufacture
If the holding part is made of biodegradable material, then it can be disposed of after use, but mold formation on remaining fragments cannot be ruled out
Solution Approach 1:
The holding part is designed as a disposable component made from biodegradable material that breaks down completely after use. The controlled destruction ensures complete decomposition without leaving persistent fragments that could promote mold growth. This approach maintains ease of manufacture through simple disposal while preventing the harmful effect of mold formation on remaining material.
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
Enhances the degree of prefabrication, reduces labor costs, minimizes installation errors, and improves seal quality by enabling controlled and clean assembly in a factory environment, eliminating the need for specialized personnel.
Implementation Method 1
a joint sealing strip (16) made of an elastic, optionally delayed-recovery foam
Data Source
Figure 1
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AI summary
The invention relates to a prefabricated building element comprising a window reveal or a window frame, wherein a circumferential joint sealing strip held in a compressed state by means of at least one holding means is provided on the inner circumference of the window reveal, or wherein a circumferential joint sealing strip held in a compressed state by means of at least one holding means is provided on the outer circumference of the window frame, wherein the holding means is removable at a predetermined time during the installation process of a window frame in the window reveal or during the installation process of the window frame in a window reveal to release the joint sealing strip.