Cordless Shade Spring Layout for Balanced Tension Adjustment
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Solution Overview
Problem
Existing cordless shade apparatuses with spring-loaded mechanisms face issues of uneven elastic force distribution, leading to unbalanced and difficult operation, particularly when dealing with shades of varying widths and lengths, and require multiple types of coil springs to achieve balance, complicating manufacturing and increasing costs.
Innovation Solution
An adjustable springs-loaded arrangement with pairs of coil springs arranged coaxially and symmetrically within spring chambers, allowing for variable tension adjustment to balance different shade weights and lengths, ensuring smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple types of coil springs are used to balance different shade weights and lengths, then the balancing performance is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent applies parameter changes by modifying the physical dimensions of a single coil spring type. Specifically, it uses coil springs with different wire diameters (e.g., 0.5mm, 0.6mm, 0.7mm) to achieve varying elastic forces. This allows the system to balance different shade weights and lengths without introducing multiple spring types, thereby maintaining manufacturing simplicity while achieving reliable balancing performance across various shade configurations.
Solution Approach 2:
The patent makes a single type of coil spring universal by designing it to serve multiple functions across different shade applications. By adjusting the wire diameter within a standardized spring design, the same spring configuration can balance various shade weights and lengths. This universality eliminates the need for multiple specialized spring types, reducing device complexity while maintaining effective balancing performance.
2Adaptability or versatility
If multiple types of coil springs are used to achieve balance for varying shade widths and lengths, then the adaptability is improved, but the manufacturing complexity and costs increase
Solution Approach 1:
The patent achieves adaptability through parameter changes in a single spring design. By varying the wire diameter (0.5mm, 0.6mm, 0.7mm) of the same coil spring configuration, the system can adapt to different shade widths and lengths. This approach maintains ease of manufacture because it involves producing variations of a single spring type rather than managing multiple distinct spring designs, thereby reducing manufacturing complexity while preserving versatility.
Solution Approach 2:
The patent introduces dynamics by making the spring selection adjustable based on specific application requirements. The system allows dynamic adaptation to different shade configurations by selecting appropriate wire diameters from a standardized range. This dynamic approach enables the manufacturing process to remain simple and standardized while achieving the flexibility needed for various shade sizes and weights.
3Ease of operation
If uneven elastic force distribution is present in the spring-loaded mechanism, then the operational smoothness deteriorates, but the device complexity remains simple
Solution Approach 1:
The patent applies local quality by ensuring uniform elastic force distribution through careful selection and placement of coil springs with appropriate wire diameters. By matching the spring parameters to the specific shade weight and length requirements, each spring is optimized to provide the correct local force distribution. This ensures smooth operation without introducing additional device complexity, as it relies on proper parameter selection rather than complex mechanical arrangements.
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 provides balanced and smooth operation across different shade sizes by using a single type of coil spring, reducing manufacturing complexity and costs while maintaining consistent tension.
Implementation Method 1
one or more pairs of coil springs arranged coaxially and symmetrically within spring chambers, allowing for variable tension adjustment to balance different shade weights and lengths
Implementation Method 2
an adjustable springs-loaded arrangement with pairs of coil springs arranged coaxially and symmetrically within spring chambers
Data Source
AI summary
A shade apparatus includes a slide seat slidably disposed in a slide channel of a headrail of the shade apparatus, wherein the slide seat includes two or more pairs of spring chambers which have different distances to a spring base mounted on one end portion of the slide channel of the headrail. Accordingly, a pair of coil springs is capable of selectively situating in one of the two or more pairs of the spring chambers while extension ends of the pair of the coil springs are connected to the spring base to adjust tensions of the pair of the coil springs for balancing a weight of a shade body and a bottom rail of the shade apparatus.