Roof Window Hinge Assembly for Low-Profile Sash Installation
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Solution Overview
Problem
Existing roof windows, particularly those used in conservation areas, face challenges in installation due to the need for low profile installation, ease of handling, and environmental considerations, while also requiring compliance with building regulations and thermal efficiency.
Innovation Solution
A method for installing a roof window that allows for a step-wise installation process, utilizing a sash installation component that supports the sash during installation, and a hinge assembly with a coupling unit that enables independent fastening of the frame to the roof structure, along with a coupling unit that allows selective coupling of the hinge unit to the frame, facilitating stability and flexibility during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the roof window is designed with a low profile to meet conservation area requirements, then the external appearance and compliance with building regulations are improved, but the installation complexity and handling difficulty increase
Solution Approach 1:
The roof window assembly is divided into separate components (frame, sash, pane) that can be installed independently. The frame is first secured to the roof structure, then the sash is separately installed using the hinge assembly with coupling unit, allowing each component to be handled and positioned more easily despite the low profile constraint.
Solution Approach 2:
The hinge assembly with coupling unit acts as an intermediary mechanism between the sash and frame. It provides a standardized interface that simplifies the connection process, allowing the sash to be securely attached to the frame without requiring complex alignment or handling procedures, thus reducing installation difficulty while maintaining the low profile design.
2Adaptability or versatility
If the sash is installed separately from the frame to facilitate independent fastening, then the installation flexibility and stability are improved, but the device complexity increases
Solution Approach 1:
The coupling unit is designed as a universal connection mechanism that can interface with both the frame and the hinge assembly. It serves multiple functions: securing the frame to the roof structure independently, providing a standardized mounting interface for the sash, and enabling flexible installation configurations. This multi-functionality reduces overall assembly complexity despite the separate installation approach.
Solution Approach 2:
The frame is pre-fastened to the roof structure using the coupling unit before the sash is installed. This preliminary action establishes a stable, pre-positioned frame that simplifies subsequent sash installation. The hinge assembly with coupling unit is prepared in advance with alignment features that guide the sash into correct positioning, reducing the complexity of the overall assembly process.
3Adaptability or versatility
If the hinge assembly uses a coupling unit with selective coupling capability, then the operational versatility and installation stability are improved, but the manufacturing complexity increases
Solution Approach 1:
The coupling unit incorporates a dynamic coupling mechanism that can selectively engage or disengage from the hinge assembly based on installation requirements. The mechanism includes movable coupling elements that can be positioned to provide secure connection during installation, then locked into place for stable operation. This dynamic capability enables operational versatility while using standard manufacturing processes for the individual components.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In the roof window, the hinge assembly (9) comprises means to allow the sash (3) to be rotated about a substantially horizontal second hinge axis (β) at a distance from the top frame member and top sash member to provide a plurality of additional open positions in a second operational condition. A sash installation component (35) is provided to support the sash (3) in the second operational condition of the roof window (1).