Nested Tube Architectural Covering for Light Control
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Solution Overview
Problem
Existing coverings for architectural openings, such as windows and doors, lack efficient mechanisms for controlling light transmission and often have complex designs that compromise aesthetic appeal and operational simplicity.
Innovation Solution
A covering system featuring nested tubes with an inner and outer tube configuration that rotate relative to each other, allowing for precise control of light entry through timing mechanisms and a locking system, along with a lift assist for easy operation, providing both functional control and improved design aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing covering designs are used, then light transmission control is provided, but the design complexity increases and aesthetic appeal deteriorates
Solution Approach 1:
The patent applies nesting by placing the inner tube inside the outer tube, creating a compact dual-tube structure. The inner tube contains the operating element and vanes, while the outer tube provides structural support and guides the operating element's movement. This nested arrangement reduces overall mechanism complexity while maintaining light control functionality through coordinated rotation of both tubes.
2Adaptability or versatility
If complex light control mechanisms are added, then light transmission control improves, but operational simplicity deteriorates
Solution Approach 1:
The operating element serves multiple functions: it wraps around the inner tube to control vane rotation, extends through the outer tube's slot to transmit motion, and integrates both tube rotations into a single user action. This multi-functionality allows comprehensive light control (opening, closing, positioning vanes) while maintaining operational simplicity through a single control mechanism.
Solution Approach 2:
The system employs dynamic interaction between the inner and outer tubes, where the operating element can wrap around the inner tube to engage it for rotation, then extend through the outer tube's slot to transmit rotational motion. This dynamic engagement and disengagement mechanism provides versatile light control while keeping the operation simple and intuitive.
3Volume of stationary object
If nested tube configuration is implemented, then head rail size is reduced, but manufacturing complexity increases
Solution Approach 1:
The head rail is segmented into distinct functional components: the outer tube providing structural support and guidance, the inner tube containing the vane mechanism, and the operating element connecting both. This segmentation allows each component to be manufactured separately with optimized geometries, then assembled into the compact nested configuration, reducing overall head rail size while managing manufacturing complexity through modular construction.
4Measurement precision
If timing mechanisms are added to control tube rotation, then light control precision improves, but device complexity increases
Solution Approach 1:
The operating element acts as an intermediary that transmits rotational motion from the inner tube to the outer tube through the slot mechanism. By controlling when and how the operating element engages with each tube during its wrap-and-extend cycle, the system achieves precise timing control of vane rotation and shade positioning without requiring separate timing mechanisms, thus maintaining operational simplicity while improving light control precision.
Data Source
Figure 1~2A
Figure 3~3A
Figure 4
AI summary
A covering for an architectural covering is provided. The covering may include a rotatable outer tube, a rotatable inner tube, a shade attached to the outer tube, and an operating element secured to the inner tube. The outer tube may define an elongated slot extending along a length of the outer tube and opening to an interior of the outer tube. The inner tube may be received within the outer tube. The shade may be retractable to and extendable from the outer tube. The operating element may extend through the elongated slot and may be retractable onto and extendable from the inner tube. The inner tube may rotate relative the outer tube to open and close the shade once the support sheet is in a fully extended position.