Adjustable Roller Blind Mounting for Light-Proof Window Sealing
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Solution Overview
Problem
Existing window screen assemblies fail to provide a light-proof seal due to gaps between the screen and the window opening, and require accurate roller width matching, which can be challenging for irregularly sized openings.
Innovation Solution
The screen assembly features elongate support members and guide tracks with flanges that fit flush against the window frame, along with resilient seals and locking devices to ensure a light-proof seal, accommodating dimensional irregularities and allowing for easy installation by using mounting brackets and tensioned rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the roller width is accurately matched to the window opening width, then the screen assembly can be mounted within the window opening, but it requires precise manufacturing and installation which is challenging for irregularly sized openings
Solution Approach 1:
The support members are made vertically adjustable to change their effective length parameter, allowing them to accommodate different window opening sizes and irregularities without requiring precise initial manufacturing matching. The adjustment mechanism enables the same component to adapt to varying dimensional parameters.
Solution Approach 2:
The mounting system transitions from a fixed rigid structure to a dynamically adjustable one, where the support members can be repositioned and reconfigured during installation to match the specific dimensions and irregularities of the window opening, making the system adaptable rather than static.
2Ease of operation
If gaps exist between the screen and window opening sides, then the screen assembly is easier to install, but light cannot be completely shut out when the screen is closed
Solution Approach 1:
Flanges are introduced as intermediary elements that extend from the support members and guide tracks to bridge the gap between the screen assembly and the window opening. These flanges create an overlapping seal that eliminates light leakage while maintaining ease of installation through the bracket system.
Solution Approach 2:
The sealing solution extends into another dimension by adding flanges that protrude from the plane of the support members and guide tracks. This dimensional extension creates an overlapping barrier against light leakage without complicating the primary mounting structure.
3Object-affected harmful factors
If flanges are added to support members and guide tracks to eliminate gaps, then light-proof seal is achieved, but the device complexity increases
Solution Approach 1:
The flanges are merged with the support members and guide tracks as integral components rather than separate additions. This combining of functions (structural support plus sealing) into single elements achieves light-proof sealing without proportionally increasing overall device complexity.
Solution Approach 2:
The flanges serve multiple functions simultaneously: they provide structural support for mounting, create the light-proof seal, and guide the positioning of the screen assembly. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
4Ease of manufacture
If mounting brackets are used to attach support members to window opening sides, then installation is simplified, but vertical adjustment capability is lost
Solution Approach 1:
The mounting brackets are designed with dynamic adjustment capability, allowing vertical repositioning of the support members after initial installation. This transforms the rigid fixed mounting into an adjustable system that maintains both installation simplicity and adaptability to dimensional irregularities.
Solution Approach 2:
The mounting system is segmented into adjustable components where the brackets can be repositioned independently along the support members, enabling vertical adjustment while maintaining the overall simplicity of the bracket-based mounting approach.
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
The solution provides a reliable, light-proof seal by eliminating gaps between the screen and window frame, ensuring complete light blockage and easy installation, even with misaligned or irregularly sized window openings.
Implementation Method 1
Resilient sealing means, preferably defined by an elongate strip of resilient material, may be provided between abutting faces of the elongate support member and the window opening and/or between the guide tracks and the support opening
Implementation Method 2
The roller may be tensioned, for example by means of a spring, to bias the roller in a winding direction whereby the screen is biased towards a raised or open position
Implementation Method 3
The lower end of the screen may be provided with a bar such that the screen hangs from the roller under gravity
Data Source
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AI summary
A screen assembly for a window comprising a screen supported by an elongate support member adapted to be mounted in an upper region of the window opening, a pair of mounting brackets being provided for attachment to respective sides of the window opening adjacent the top face of the window opening, each end of the elongate support member having means for engaging a respective mounting bracket, whereby the mounting brackets may be attached the sides of a window opening such that the support member may be engaged onto the mounting brackets to mount the support member in the window opening.