Cord Divider Layout for Curtain Winders to Prevent Tangling
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Solution Overview
Problem
Existing cord winders for window curtains suffer from cord tangling and knotting, uneven tension control, complex wiring, and unpredictable curtain alignment due to the placement of traditional cord dividers at the ends, leading to cord breakage and operational inefficiencies.
Innovation Solution
A cord divider system with a frame, spring wheels, gears, and dividers that guide cords through gaps and protrusions, minimizing friction and maintaining consistent tension, allowing smooth operation and even curtain movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cord dividers are installed at the front and back ends of the cord winder, then cord tangling and knotting are prevented, but cord friction increases leading to breakage
Solution Approach 1:
A guide groove is introduced as an intermediary structure between the cord and the cord divider body. The groove provides a low-friction surface for the cord to slide along, reducing direct contact friction and preventing cord breakage while maintaining the cord divider's ability to prevent tangling and knotting.
2Ease of operation
If cord dividers are placed at the ends of the cord winder, then cord organization is improved, but wiring complexity increases for large curtains
Solution Approach 1:
The cord divider structure extends outward from the end of the cord winder along the cord winding direction. This dimensional extension creates additional space for cord routing, allowing cords to be guided smoothly without requiring complex bypass arrangements, thus simplifying the wiring configuration while maintaining good cord organization.
3Adaptability or versatility
If cords are pulled out from both ends of the cord winder, then cord coverage is improved, but friction inconsistency causes curtain tilting
Solution Approach 1:
Guide grooves are selectively provided on the cord dividers at both ends of the cord winder. These grooves create localized low-friction zones that ensure consistent friction characteristics for cords pulled from either end, preventing the friction inconsistency that would otherwise cause curtain tilting while maintaining comprehensive cord coverage.
4Ease of operation
If traditional cord dividers are used, then cord separation is achieved, but tension control precision is lost
Solution Approach 1:
The guide groove acts as an intermediary that maintains consistent friction between the cord and cord divider. This consistent friction provides a predictable resistance force that aids in precise tension control, while the groove still effectively separates and organizes the cords, thus maintaining both cord separation and tension control precision.
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 prevents cord tangling and knotting, ensures consistent tension, simplifies wiring, and maintains uniform curtain alignment, enhancing durability and operational efficiency.
Implementation Method 1
a first spring wheel, a second spring wheel, a first gear and a second gear are installed
Implementation Method 2
two first cords are wrapped around the first gear, and two second cords are wrapped around the second gear
Implementation Method 3
The first two cords extend out from the frame and go through a gap between the protrusion of one of the two cord dividers
Data Source
AI summary
A cord divider is positioned on both sides of the cord winder of the control box of a cordless window curtain. Each cord divider is equipped with protrusions and crosspieces. When the cords are pulled out from the cord divider, the cords do not tangle or knot. The cords are wound up on the driving gear set, and the driving cord device prevents the cords from overlapping and causing uneven heights on both sides of the curtain. The use of cylinders in the cord dividers prevents excessive friction of the cords during use. There is no need to change the current cooperation way between the cords and the cord winder.