Adjustable Roller Shades with Dual Edge Control
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Solution Overview
Problem
Conventional roller shades are limited in their ability to open from both the top and bottom portions of a window, leaving the lower portion exposed when partially opened, and do not allow for independent control of upper and lower edges.
Innovation Solution
An adjustable roller shade system featuring a roller shade fabric winding shaft, a weight, a movable pulley, and a pair of traction ropes with winders, driven by motors and controlled by a controller, allowing for independent and simultaneous adjustment of the upper and lower edges via manual, control switch, or remote control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional roller shade is mounted at the top of the window and opened partially, then the upper portion of the window is opened, but the lower portion remains exposed and natural light from the upper portion is blocked
Solution Approach 1:
The roller shade is divided into two independently controllable sections: an upper section with its own fabric roll and lower section with its own fabric roll. Each section can be opened or closed independently through separate control mechanisms, allowing flexible control over which portions of the window are covered or exposed.
Solution Approach 2:
The system employs dynamic control mechanisms including motors, pulleys, and ropes that allow the roller shade to transition between different states (fully closed, fully open, or partially open at different levels). The independent control of upper and lower sections enables the shade to adapt dynamically to different lighting and privacy requirements.
2Adaptability or versatility
If a roller shade system adds independent control of upper and lower edges with multiple winders and traction ropes, then the adaptability to open any portion of the window is improved, but the device complexity increases
Solution Approach 1:
The pulley system serves multiple functions: it supports the weight of the fabric rolls, transmits motor torque to the winders, and enables bidirectional movement (raising and lowering) of the fabric. The same mechanical components are used for both upper and lower section control, reducing the need for separate mechanisms.
Solution Approach 2:
The system uses counterweights and balanced pulley arrangements to equalize the forces required to raise and lower the fabric sections. This balancing mechanism reduces the net force required from the motors, simplifying the power requirements and making the complex mechanism more efficient and manageable.
3Ease of operation
If conventional roller shades use a single scroll mechanism mounted at the top, then the device complexity is kept simple, but the ability to independently control upper and lower edges is lost
Solution Approach 1:
The patent introduces intermediate control elements including remote controls, switches, and motor controllers that mediate between the user and the complex mechanical system. These intermediaries simplify the user interface while managing the complexity of the dual-section control mechanism in the background.
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 flexible and independent control of both the upper and lower edges of the roller shade, allowing users to open any portion of the window as needed, improving usability and aesthetics.
Implementation Method 1
a movable pulley, fixedly attached to the roller shade fabric winding shaft
Implementation Method 2
a weight, attached to a bottom of the roller shade fabric forming a lower edge of the adjustable roller shade
Data Source
AI summary
Present disclosure relates to several adjustable roller shades. Adjustable roller shade includes: roller shade fabric winding shaft, weight, movable pulley, traction rope, and a pair of winders. A roller shade fabric is wound on roller shade fabric winding shaft 1 forming upper edge of adjustable roller shade. Weight is attached to bottom of roller shade fabric forming lower edge of adjustable roller shade. Movable pulley is fixedly attached to one end of the roller shade fabric winding shaft. The traction rope is wound around the movable pulley and pair of winders and pair of tensioning wheels. One or more driving motors drive the pair of winders to rotate in different combination of directions to raise or lower both upper edge and lower edge of adjustable roller shade, resulting the adjustable roller shade to be opened or closed freely from both upper and lower edges of the adjustable roller shade.