Mid-Rail Retractable Shade With Independent Fabric Control
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Solution Overview
Problem
Existing retractable shading systems for architectural openings, such as windows and doorways, lack a middle rail option in top down/bottom up configurations, which limits flexibility and aesthetic options, and often require complex cord systems for operation.
Innovation Solution
A shade system incorporating a mid-rail with a roller blind, flexible or rigid fabric, and a control system featuring a central clutch block and pulley brackets, allowing for independent movement and positioning of the mid-rail, along with a valance for concealment and decorative purposes, and a weighted bottom rail for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional top down/bottom up shade system is used without a mid-rail, then the system is simpler, but the flexibility and aesthetic options are limited
Solution Approach 1:
The shade system is divided into multiple independent sections by introducing a mid-rail that can be positioned at different locations. This segmentation allows each section (top section above mid-rail, bottom section below mid-rail) to be controlled independently, providing enhanced flexibility and aesthetic options while maintaining a manageable structure through modular design
2Adaptability or versatility
If a mid-rail is added to provide flexibility and positioning options, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The mid-rail assembly is designed as a universal component that can be positioned at various locations along the shade and serves multiple functions: it provides positioning options, acts as a support structure, enables independent control of fabric sections, and offers aesthetic versatility. This multi-functionality justifies the added complexity by delivering multiple benefits from a single integrated component
3Ease of operation
If multiple independent cords are used for raising and lowering the bottom rail, then the operation is more precise, but the cord system becomes more complex
Solution Approach 1:
Multiple independent cords that were previously used separately for raising and lowering operations are merged into a unified cord system that operates through a single tassel. This consolidation maintains operational precision by allowing independent control of different shade sections while significantly reducing the visual and structural complexity of the cord system
Data Source
AI summary
A shade system including a middle rail including a roller blind in addition to top and bottom rails wherein a fabric is intermediate the top and middle rails.