Window Sash Frame Adhesive Bracket Insertion
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Solution Overview
Problem
Existing window sash designs face challenges in rapid and simple assembly, particularly with mechanical assembly, and struggle to achieve effective wind load resistance and secure glazing attachment, especially when using adhesives with retaining brackets already present on the casement.
Innovation Solution
The solution involves attaching the glazing to the sash frame spars using an adhesive and then inserting the mounting bracket into the adhesive before it hardens, ensuring a cohesive and secure attachment of the bracket to both the sash frame and glazing, which enhances wind load resistance and simplifies assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the retaining bracket is attached to the sash frame before glazing installation, then the bracket position is pre-established, but the adhesive application and glazing attachment become difficult and assembly time increases
Solution Approach 1:
The retaining bracket is pre-assembled on the sash frame with positioning elements (protrusions fitting into recesses) to establish accurate positioning before glazing installation. This preliminary positioning action ensures the bracket is correctly positioned while allowing subsequent adhesive application and glazing attachment to proceed efficiently without time loss.
2Strength
If mechanical fastening elements are used to attach the bracket, then secure attachment is achieved, but the assembly process becomes more complex and requires additional tools
Solution Approach 1:
The attachment system is segmented into multiple functional elements: positioning protrusions on the bracket, corresponding recesses on the sash frame for precise positioning, adhesive application surfaces for bonding, and sealing elements for weatherproofing. This segmentation allows each element to perform its specific function independently, achieving secure attachment while simplifying the overall assembly process through modular design.
3Force
If the bracket fully overlaps the glazing end face, then maximum support and wind load resistance is achieved, but the adhesive application area is reduced and assembly becomes more difficult
Solution Approach 1:
The bracket is designed with varying degrees of overlap at different locations: full overlap at the ends for maximum wind load resistance, and reduced overlap at intermediate sections to allow adhesive application. The positioning protrusions and recesses are locally positioned to facilitate adhesive application while maintaining structural integrity. This local differentiation of overlap quality achieves both maximum support strength and ease of manufacture.
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
This method provides a reliable and efficient attachment of the glazing to the sash frame, improving wind load resistance and enabling tool-free assembly of the bracket, while ensuring a strong and secure connection that maintains the integrity of the glazing and sash frame interface.
Implementation Method 1
The glazing (5) is attached to at least one of the sash frame mullions (3, 4) by means of an adhesive (10)
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a sash frame (2) for a window (1), comprising several sash frame mullions (3, 4) attached to one another, and a glazing (5) supported by the sash frame mullions (3, 4), wherein an end face of the glazing (5) is at least partially overlapped by a retaining bracket (15) for support. It is provided that the glazing (5) is attached to at least one of the sash frame mullions (3, 4) by means of an adhesive (10), and the retaining bracket (15) is either inserted into the adhesive (10) or, prior to the glazing (5) being attached to the sash frame mullion (3) by means of the adhesive (10), is only partially positioned on the sash frame mullion (3). The invention further relates to a method for manufacturing a sash frame (2) for a window (1) and to a window (1) comprising a frame and a sash frame (2).