Segmented Mounting Brackets for Fire-Resistant Window Inserts
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Solution Overview
Problem
Existing fire-resistant window and door frameworks are complex and costly to manufacture, primarily due to the extensive use of continuous metal mounting brackets for fire-resistant inserts.
Innovation Solution
The use of relatively short metal mounting brackets in combination with fire-resistant inserts having an EW/EI-value of at least 30 minutes, which are locked between two mounting brackets on each side, simplifies the manufacturing process while maintaining fire resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous metal mounting brackets are used to retain the fire-resistant insert, then fire resistance is ensured, but manufacturing complexity and cost increase
Solution Approach 1:
The continuous metal mounting brackets are divided into multiple separate brackets distributed along the sides of the fire-resistant insert. Each bracket is spaced at specific intervals (e.g., at least 200mm between brackets) and secured to the hollow-chamber profiles, replacing the need for continuous brackets while maintaining structural integrity and fire resistance.
2Reliability
If continuous metal mounting brackets are used to prevent sagging and combustion gas penetration, then fire resistance is ensured, but manufacturing cost increases
Solution Approach 1:
The continuous bracket system is segmented into discrete brackets positioned at critical locations only. The brackets are spaced at intervals (e.g., minimum 200mm spacing) along the sides, reducing material consumption and manufacturing cost while the fire-resistant insert material fills the gaps to maintain fire resistance performance.
Solution Approach 2:
Metal brackets are applied locally at specific positions where structural support is most needed, rather than continuously along the entire side. The brackets are positioned to prevent sagging at critical points, while the fire-resistant insert material provides continuous protection against combustion gas penetration throughout the entire structure.
3Stability of the object's composition
If continuous metal mounting brackets are used, then structural stability is ensured, but assembly difficulty increases
Solution Approach 1:
The bracket system is segmented into discrete units that can be individually positioned and secured to the hollow-chamber profiles. This segmentation allows for easier handling, positioning, and assembly compared to installing continuous brackets, while the distributed arrangement of multiple brackets maintains structural stability.
Data Source
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AI summary
A casement window or framework for a fire resistant window or a fire resistant door, comprising: • at least four hollow-chamber profiles connected to each other and based on PVC-U, each having a reinforcing chamber containing a metal reinforcement, • a fire resistant insert, more particularly a fire resistant glazing, retained in the chamber profiles; and • a plurality of metal mounting brackets retaining the fire resistant insert on all four sides on the outside and/or the inside in the area of the edge, which fastening brackets are screwed to the metal reinforcements in the reinforcement chambers of the hollow-chamber profiles. On at least the upper side the fire-resistant insert is held by at least two relatively short mounting brackets being at a relatively large distance from each other, and on each of the other three sides the fire-resistant insert is held by at least one mounting bracket. The fire-resistant insert has at least a EW/EI-value of 30 minutes.