Upright Winding Unit for Cordless Roller Blind
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Solution Overview
Problem
Conventional cordless roller blinds protrude excessively from vertical walls due to the transverse arrangement of the winding wheel and torsion spring, affecting aesthetic appeal and imposing installation restrictions, especially when a heavier blind requires a stronger torsion spring.
Innovation Solution
A winding device with a mounting seat, winding unit, and connecting mechanism that allows the winding unit to be mounted upright, using a casing with a gear wheel system and elastic strip to roll the blind, and a connecting mechanism with removably engaging elements to secure the winding unit to the mounting seat, ensuring the winding unit remains upright regardless of the supporting structure's orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the winding wheel and torsion spring are arranged transversely to the vertical wall, then the blind can be balanced and operated cordlessly, but the winding unit protrudes excessively from the wall affecting aesthetic appeal
Solution Approach 1:
The patent changes the spatial arrangement from transverse to upright orientation. The winding wheel is positioned vertically above the torsion spring, transforming the component layout from a horizontal plane arrangement to a vertical plane arrangement. This dimensional change allows the winding unit to be compact against the wall while maintaining the cordless operation function through the gravitational and elastic force balance between the blind weight and torsion spring.
2Weight of moving object
If a greater torsion spring is employed to balance heavier blinds, then the blind weight can be balanced, but the protrusion distance increases further affecting aesthetics
Solution Approach 1:
By reorienting the torsion spring and winding wheel to a vertical arrangement, the patent enables the use of appropriately-sized torsion springs for heavier blinds without increasing horizontal protrusion. The vertical stacking allows the torsion spring to be positioned within the same wall-mounted footprint, maintaining compactness while accommodating varying blind weights through adjusted spring strength rather than increased protrusion.
3Ease of manufacture
If the cover is designed with an elongate shape to accommodate the transverse arrangement, then the winding wheel and torsion spring can be installed, but the overall aesthetic appeal is reduced
Solution Approach 1:
The patent transforms the cover design from an elongate horizontal shape to a compact vertical orientation. By positioning the winding wheel and torsion spring in a vertical stack, the cover only needs to extend vertically along the wall rather than horizontally, resulting in a more aesthetically pleasing compact shape that integrates better with vertical wall surfaces while remaining easy to manufacture and install.
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 solution prevents excessive protrusion of the winding unit from vertical surfaces, enhancing the aesthetic appeal and allowing for easier installation of both lighter and heavier blinds, as the winding unit remains upright and compact, improving the overall design.
Implementation Method 1
a torsion spring 133 connected at two ends respectively to the post 123 and the winding wheel 132. By virtue of the cooperation between the torsion of the torsion spring 133 and the weight of the blind unit 14, the blind 143 is disposed in a balanced state cordlessly.
Implementation Method 2
The winding unit includes a casing and a winding set that is mounted to the casing and that is adapted for rolling the pole to bring the blind to fold upwardly and unfold downwardly relative to the securing seat and the mounting seat.
Implementation Method 3
a winding set that is mounted to the casing and that is adapted for rolling the pole to bring the blind to fold upwardly and unfold downwardly
Data Source
AI summary
A winding device for a cordless roller blind includes a mounting seat, a winding unit and a connecting mechanism. The mounting seat is mountable on a supporting structure. The connecting mechanism is for connecting removably the winding unit to the mounting seat in such a manner that the winding unit is upright when connected to the mounting seat. The connecting mechanism includes a first connecting set that is disposed on one of a casing of the winding unit and the mounting seat, and at least two second connecting sets that are disposed on the other of the casing and the mounting seat. The first connecting set is removably engageable with one of the second connecting sets so as to connect removably the winding unit to the mounting seat.