Telescopic Screen Assembly for Friction-Mounted Window Installation
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Solution Overview
Problem
Existing screen assemblies for windows require accurate matching of the roller width to the window opening and often necessitate drilling holes for mounting brackets, which can be difficult and damaging, and may not completely shut out light due to gaps and misalignment.
Innovation Solution
A screen assembly with adjustable side rails that frictionally engage the window opening without drilling, featuring extendable feet, telescopically adjustable end caps, and a levelling mechanism to ensure proper alignment and secure attachment without additional fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mounting brackets are attached to the upper sides of the window opening by screws inserted into holes, then the screen assembly can be securely mounted, but holes must be accurately drilled into the sides of the window opening which requires skilled fitting and can result in damage to the window opening
Solution Approach 1:
The patent removes the mounting brackets entirely from the system. Instead of attaching brackets to the window opening sides, the screen assembly uses its side rails to directly engage with the window opening through friction and geometry, eliminating the need for screws and holes that could damage the window.
Solution Approach 2:
The side rails are designed to be self-supporting through frictional engagement with the window opening faces. The geometry of the side rails and window opening creates a self-locking mechanism that provides secure mounting without external fasteners, allowing the screen assembly to support itself.
2Manufacturing precision
If the width of the roller is accurately matched to the width of the window opening, then the screen assembly can be mounted within the window opening, but this requires precise manufacturing and installation
Solution Approach 1:
The side rails are made telescopic with adjustable lengths that can be modified using threaded rods. This dynamic adjustment capability allows the screen assembly to adapt to different window opening widths without requiring precise pre-matching of the roller width, significantly easing installation.
Solution Approach 2:
The patent allows change in the physical parameter of side rail length through telescopic adjustment. By enabling the side rails to extend or retract, the system can accommodate variations in window opening dimensions without requiring precise manufacturing tolerances or complex installation procedures.
3Stability of the object's composition
If mounting brackets are positioned to ensure the roller is level, then the screen moves parallel to the sides of the window opening, but this requires accurate positioning and adjustment
Solution Approach 1:
The attachment means between the head assembly and side rails incorporates adjustable mechanisms that allow the head assembly to be positioned at different vertical locations and orientations. This dynamic adjustment capability enables proper leveling and alignment of the screen without requiring precise pre-positioning of mounting brackets.
4Ease of operation
If gaps are present between the sides of the screen and the sides of the window opening, then the screen assembly can be installed without precise matching, but the screen cannot completely shut out light when closed
Solution Approach 1:
The telescopic side rails enable adjustment of the screen assembly width to match the window opening dimensions. By changing the physical parameter of side rail length, the system eliminates gaps between the screen and window opening, achieving complete light blockage while maintaining easy installation through adjustable rather than precision-fitted components.
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
Enables easy and damage-free installation of the screen assembly, ensuring complete light blockage and reliable operation by accommodating varying window widths and misalignments without the need for additional fasteners or drilling.
Implementation Method 1
a foot is provided at each end of each side rail adapted to frictionally engage respective upper and lower faces of the window opening
Data Source
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AI summary
A screen assembly for a window comprising a pair of parallel and spaced apart side rails (2, 4) locatable against respective sides of a window opening and a head assembly (6), including a roller (8) upon which is wound a screen (10), the head assembly (6) extending between the side rails (2, 4) and being adapted to be mounted on upper ends of the side rails to be supported thereon against and/or adjacent to an upper side of the window opening, wherein each side rail (2, 4) is linearly extendable whereby that upper and lower ends of the side rails frictionally engage upper and lower faces of a window opening to secure the side rails, and the head assembly (6) mounted thereon, in place within the window opening.