Telescoping Roller Shade Assembly With Winged Spline Length Adjustment
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Solution Overview
Problem
Existing window roller shades lack a practical method for adjusting length without compromising structural integrity or requiring complex mechanisms, limiting their adaptability to varying window sizes.
Innovation Solution
A telescoping roller shade system with a tubular extension and outer tube, featuring winged splines for a secure frictional fit, combined with a tube cutting machine for precise length adjustment, allowing the extension to be cut and slid into the roller for customized length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a telescoping mechanism is added to allow length adjustment, then adaptability to varying window sizes is improved, but device complexity increases
Solution Approach 1:
The extension tube is nested within the roller shade assembly, allowing the extension to be inserted into and stored within the existing roller structure. This nesting approach enables length adjustment without adding external complexity, as the extension integrates seamlessly into the roller's internal cavity.
Solution Approach 2:
The roller shade assembly is divided into separable components: the main roller body and the extension tube. This segmentation allows the extension to be independently manufactured and inserted, simplifying the overall mechanism while enabling adjustable length. The extension can be removed or inserted without affecting the main roller structure.
2Stability of the object's composition
If the extension is made resiliently flexible for a tight frictional fit, then stability and resistance to lengthwise movement are improved, but ease of insertion into rollers of varying diameters deteriorates
Solution Approach 1:
The extension tube is made with resilient flexibility, allowing its physical parameters (specifically its ability to deform and conform) to change during insertion. This flexibility enables the extension to adapt to different roller diameters while maintaining a stable frictional fit once inserted, resolving the contradiction between stability and adaptability.
3Manufacturing precision
If a specialized tube cutting machine is used for precise cutting, then manufacturing precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The tube cutting machine is designed to perform the cutting operation autonomously with minimal human intervention. The machine guides the cutting blade through the extension tube with precision, and the process is standardized enough that it can be replicated consistently. This self-service approach improves precision while keeping the manufacturing process manageable.
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 length adjustment of roller shades to fit different window sizes while maintaining structural integrity and stability, with the cutting machine ensuring precise cuts and the winged splines providing a secure, adaptable fit.
Implementation Method 1
the resiliently flexible first and second members provide for a tight frictional fit that resists lengthwise movement and relative rotation between the extension and the roller
Data Source
AI summary
A roller shade assembly comprises a tubular roller having a generally cylindrical internal cavity, an generally tubular extension telescopically mounted within the internal cavity of the tubular roller, and an outer tube mounted over the extension. The extension includes an outer wall and a plurality of winged splines located around the outer circumference of the outer wall which extend along at least a portion of the length of the extension tube.