Sliding Window Frame Projection for Insulation and Retraction
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Solution Overview
Problem
Conventional sliding window installations face issues such as reduced insulation due to the need for a box to house part of the fixed frame, increased costs from additional facing elements, and complex installation processes that make them unsuitable for renovation or improving existing buildings.
Innovation Solution
A sliding window installation design where the fixed frame is arranged to project outward from the opening, allowing the leaf to slide entirely outside, with a guide rail extending along the opening's exterior, and incorporating insulation and sealing elements to maximize light entry and insulation without additional cladding, facilitating simpler installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fixed frame is housed in a box within the building wall, then the sash can be fully retracted outside the opening, but the insulation performance deteriorates due to reduced insulation layer thickness
Solution Approach 1:
The fixed frame is inverted from being housed inside the wall to projecting outward from the building opening. This reversal allows the sash to slide entirely outside the opening while the insulation layer can be applied to the inner face of the opening without being compromised by the frame's position, thus maintaining both full retraction capability and insulation performance.
Solution Approach 2:
The fixed frame is positioned in a different spatial dimension - projecting outward from the opening rather than being embedded within the wall thickness. This dimensional change allows the insulation layer to be applied in the wall's interior space without conflict, while the sash operates in the exterior space, resolving the contradiction between retraction and insulation.
2Shape
If facing elements are added to conceal the fixed frame, then the building appearance is improved, but the installation cost increases
Solution Approach 1:
The fixed frame is extracted from the building's interior space and positioned on the exterior, projecting outward from the opening. This extraction eliminates the need for additional facing elements to conceal it, as the frame is already in its final aesthetic position outside the building, thus improving appearance without increasing cost.
3Ease of operation
If the fixed frame is housed within the wall, then the sash can retract fully, but the installation process becomes complex and time-consuming
Solution Approach 1:
The installation approach is inverted by positioning the fixed frame to project outward rather than requiring it to be housed within the wall. This simplifies the installation process as the frame can be directly mounted to the building's exterior surface, eliminating the need for complex wall embedding procedures, while still allowing full sash retraction.
Data Source
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AI summary
The invention relates to a sliding window installation comprising a window unit (1) fixed in an opening made in a wall of a building, said window unit comprising: - a fixed frame (10), comprising an upper rail, a lower rail and two vertical uprights, with sealing means provided between the fixed frame and the opening, - a sash (20) mounted to slide in the fixed frame, comprising glazing (21), in particular double or triple glazing, - a guide system enabling the sash to be guided relative to the fixed frame, comprising at least one guide rail made on the upper or lower rail (12) of the fixed frame (10).According to the invention, the fixed frame is arranged in the opening projecting outwards from the opening so as to position the sash (20) entirely outside the opening (3), on the exterior side of the building, the sash (20) being able to move from a closed position, in which the sash (20) completely closes the opening left by the fixed frame (10) at the level of the opening, to an open position, in which the sash (20) is laterally offset relative to the opening (O10) left by the fixed frame.