Glass Door Strip Stop for Smoke Seal
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Solution Overview
Problem
Existing double-leaf all-glass doors lack a smoke-tight closure mechanism, as conventional sealing profiles slipped over glass edges fail to provide a secure seal, compromising smoke protection requirements.
Innovation Solution
A strip-shaped fixed stop is integrated onto the fixed leaf of a double-leaf all-glass door, protruding beyond its edge to carry a smoke protection sealing profile, ensuring a secure seal when the active leaf rests against it, with optional spacers for alignment and secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing profiles are slipped over the edge of glass panes, then the door leaf can be constructed simply, but a smoke-tight seal cannot be achieved
Solution Approach 1:
A fixed stop made of smoke protection class material is introduced as an intermediary element between the door leaves. This stop carries a sealing profile that actively engages with the moving door leaf, creating a smoke-tight seal. The fixed stop acts as a mediator that transforms the passive sealing approach into an active sealing mechanism, ensuring smoke protection while maintaining relatively simple construction.
Solution Approach 2:
The sealing mechanism changes from a passive profile slipped over glass edges to an active sealing system where the fixed stop with sealing profile actively engages the moving door leaf. This parameter change in the sealing mechanism's functionality enables smoke-tight closure while managing construction complexity through standardized components.
2Reliability
If a fixed stop is added to the fixed leaf, then smoke protection is achieved, but the visual appearance of the all-glass door is impaired
Solution Approach 1:
The fixed stop is designed with local quality considerations - it is positioned at the edge of the fixed door leaf where it is least visually intrusive. The sealing profile is localized to the interface between door leaves, minimizing visual impact on the overall all-glass appearance while maintaining smoke protection functionality at the critical sealing location.
Solution Approach 2:
The fixed stop and spacer are preferably made of glass to match the door leaves, making the arrangement practically unnoticeable. This material selection strategy maintains the visual appearance of an all-glass door by using identical or similar materials, rendering the smoke protection components virtually invisible to viewers.
3Reliability
If the fixed stop protrudes beyond the edge of the fixed leaf, then the active leaf can rest against it for sealing, but the handling of the door may be compromised
Solution Approach 1:
The fixed stop protrudes only partially beyond the edge of the fixed door leaf - just enough to provide effective sealing engagement with the moving door leaf, but not so much as to interfere with normal door handling. This partial protrusion optimizes the balance between seal security and ease of operation, providing sufficient sealing surface area while maintaining smooth door movement.
Data Source
Figure 1
Figure 2
AI summary
The wing has a positive stop (10) arranged in an active leaf (3), where the positive stop is designed in the form of a strip. An active leaf sided boundary edge (15) of a fixing wing (2) is provided on the fixed wing in an overlapping manner. The positive stop carries a smoke protection sealing profile (11). The stop is bolted with the fixed wing and arranged below an intermediate arrangement of a spacer (12) at the fixed wing.