Cordless Roller Shade Assembly for Child-Safe Lifting
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Solution Overview
Problem
Existing window and architectural passage coverings that rely on cords pose a significant risk of strangulation to small children, as these cords can entangle and cause serious harm or death, and existing cordless solutions either lack sufficient strength to handle heavy shades or require expensive magnets and do not ensure proper folding of the shades.
Innovation Solution
A cordless covering system that uses a roller and guide members to lift and lower shades without cords, incorporating magnetic strips or Velcro fasteners that are weight-sensitive to prevent child entanglement, and a monitoring assembly to stop the lift sheet from being wound about the roller when excessive strain is detected, ensuring the shade is not drawn up if a child tries to crawl into the pocket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cords are used to extend and retract coverings, then the coverings can be operated easily, but small children can become entangled in the cords and experience serious harm including strangulation
Solution Approach 1:
The patent removes cords entirely from the covering system, extracting the hazardous element while preserving the functional capability through an alternative mechanism using a roller and fabric sheet
Solution Approach 2:
The patent replaces the cord-based mechanical pulling system with a roller-based system where fabric is wound and unwound, substituting the hazard-prone cord mechanism with a inherently safer rolling mechanism
2Object-affected harmful factors
If expensive magnets are used to create cordless lift mechanism, then child strangulation risk is eliminated, but the cost increases significantly
Solution Approach 1:
The patent uses inexpensive fabric sheets and standard rollers instead of expensive magnets, employing low-cost materials that can be easily manufactured and replaced if needed
Solution Approach 2:
The patent changes the fundamental operating parameters from magnetic attraction to mechanical winding, utilizing different physical principles that are more cost-effective while achieving the same cordless safety objective
3Manufacturing precision
If guide members are used to ensure proper folding of shades, then the shades fold correctly, but the device complexity increases
Solution Approach 1:
The patent combines the guide function with the structural support function by integrating guide members into the existing framework, allowing single components to serve multiple purposes without adding unnecessary complexity
Solution Approach 2:
The guide members serve multiple functions: guiding the fabric sheet, ensuring proper folding, and providing structural support, thereby reducing the need for separate specialized components
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
The system effectively eliminates the risk of child strangulation by using a cordless lift mechanism that is strong enough to handle heavy shades, ensures proper folding, and includes safety features to prevent child entrapment, providing a safe and functional alternative to traditional corded systems.
Implementation Method 1
incorporating magnetic strips or Velcro fasteners that are weight-sensitive to prevent child entanglement
Implementation Method 2
a roller, whereby the sheet of material can be wound about the roller or unwound therefrom
Data Source
AI summary
A single or dual channel cord enclosure adapted to hide at least a portion of a cord drawing a shade or blind up or down is included as part of an apparatus, which may also include a roller mechanism adapted to drive a roller to operate an architectural cover, and a cord mechanism adapted to drive the roller mechanism. The enclosure may completely enclose the cord and utilize a slider to actuate the cord within the cord channel enclosure. In another embodiment, an apparatus for actuating an architectectural covering includes an enclosure configured to receive a cord mechanism; a roller mechanism provided on an end of the enclosure; and a slider configured to be movably engaged to the enclosure so that moving the slider actuates the roller mechanism to lift or lower the architectural covering. Also included is a method of making an apparatus for actuating an architectectural covering.