Adjustable Window Screening Side Rails with Break Areas

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Solution Overview

Problem

Existing window screening arrangements face challenges in accommodating different window sizes without compromising appearance or operational smoothness, as traditional adjustment methods often result in visible joints or impaired functionality.

Innovation Solution

The screening arrangement features side rails with break areas and weakening grooves, allowing for easy breaking into sections to accommodate various installation positions, and a fixation member that enhances strength and guides the screening body, while maintaining a clean appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If side rails are made as single-piece components with fixed length, then manufacturing and installation are simplified, but adaptability to different window sizes is reduced

Engineering Contradiction:
Improveside rail manufacturing simplicityVSAvoidadaptability to different window sizes
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The side rail is divided into multiple sections with a break area that allows the rail to be separated into different length configurations. This segmentation enables the same side rail component to adapt to various window sizes while maintaining manufacturing simplicity through standardized section design.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If side rails are extended using extension members, then adaptability to different window sizes is improved, but visible joints and impaired operation occur

Engineering Contradiction:
Improveadaptability to different window sizesVSAvoidoperation smoothness
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

Instead of using separate extension members that create visible joints, the side rail itself is designed with integrated break areas that allow clean separation into sections. This maintains operational smoothness by eliminating the need for steering mechanisms and extension joints.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The break area design allows the side rail to be separated into sections without requiring additional extension members or steering devices. The extracted sections can be reconfigured to different lengths while maintaining a clean appearance and smooth operation.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If side rails are made with complex multi-flange configurations for light proofing and guidance, then light-proofing and guidance functions are improved, but device complexity increases

Engineering Contradiction:
Improvelight-proofing and guidance functionalityVSAvoidside rail structural complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Multiple functional flanges (guiding flange, light-proofing flange, strengthening flange) are merged into a single integrated side rail structure. This combining of functions maintains reliable light-proofing and guidance while reducing overall device complexity compared to separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The side rail is designed as a multi-functional component that simultaneously provides guidance for the screening body, light-proofing by overlapping side edges, and structural strengthening. This universal design eliminates the need for separate components for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP2987943B1Screening arrangement with side rails of adjustable length and a method of mounting such screening arrangement
Publication Date: 2018.05.02 VKR HOLDING AS
  • EP2987943B1 patent drawingFigure 1
  • EP2987943B1 patent drawingFigure 2
  • EP2987943B1 patent drawingFigure 3

AI summary

A screening arrangement (1) for a window and adapted to be mounted in a frame (2) of the window, having a supply condition and a mounted condition including at least two installation positions, the screening arrangement comprising a screening body (6) and two side rails (8, 9) having a pre-defined length corresponding to a first installation position and at least one adjusted length corresponding to a respective at least one other installation position, the side rails (8, 9) comprising a break area. Furthermore the invention relates to a method of mounting such screening arrangemnt (1).