Adjustable Coil Spring Roller Pipe for Screen Operability
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Solution Overview
Problem
Existing screen devices lack the ability to adjust the initial winding of the coil spring integrated in the roller pipe, which is necessary for optimal opening and closing operability, especially when dealing with varying sizes and structures of openings in buildings.
Innovation Solution
A screen device with a roller pipe that includes a revolving shaft with a wound coil spring, connected to a rotator and stator, allowing for adjustment of the resilient force by twisting or restoring the coil spring, and featuring upper and lower slide guide frames that can be retracted and fixed to maintain linearity and facilitate length adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the initial winding of the coil spring is applied in advance in the manufacturing plant, then the screen device can be produced efficiently, but the opening and closing operability cannot be optimized for different installation openings
Solution Approach 1:
The patent applies the dynamics principle by making the initially wound coil spring adjustable after manufacturing. The spring can be rotated to change its initial winding state, transforming a static parameter into a dynamic one that can be adapted to different installation conditions while maintaining manufacturing efficiency
Solution Approach 2:
The patent implements parameter changes by allowing the initial winding of the coil spring to be modified through rotation. This changes the physical parameter of the spring's pre-tension force, enabling optimization of opening and closing operability for different screen sizes and installation openings without remanufacturing
2Ease of manufacture
If the coil spring has a fixed resilient force, then the manufacturing process is simple, but the screen device cannot adapt to varying sizes and structures of openings
Solution Approach 1:
The patent makes the resilient force parameter dynamic by allowing rotation of the coil spring to adjust its initial winding. This enables the same spring to provide different resilient forces for different screen configurations while keeping the manufacturing process simple and unchanged
Solution Approach 2:
The patent achieves universality by designing a coil spring mechanism that can serve multiple functions: it provides the driving force for opening and closing while also being adjustable to adapt to various screen sizes and opening dimensions, replacing the need for multiple spring types
3Stability of the object's composition
If the slide guide frames are made rigid to maintain linearity, then the structural stability is improved, but the ability to retract into the screen mounting frame is reduced
Solution Approach 1:
The patent applies segmentation by dividing the slide guide frame into multiple rigid units connected by rotatable joints. This allows the frame to maintain the rigidity of individual units for stability while gaining flexibility through the joints, enabling retraction into the screen mounting frame
Solution Approach 2:
The patent implements nesting by designing the slide guide frame to retract into the screen mounting frame when not in use. The flexible configuration allows the guide frame to be stored compactly within the mounting structure, saving space while maintaining structural integrity during operation
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 fine adjustment of the resilient force to match the size and structure of the screen, improving opening and closing operability and allowing for easy length adjustments to fit various opening sizes, while maintaining stability and flexibility.
Implementation Method 1
a roller pipe (3) to which one of left and right ends of the screen (2) is attached, the roller pipe configured to be rotated by a resilient force of an integrated coil spring (6)
Data Source
Figure 1~2
Figure 3(a)~4
Figure 5
AI summary
In a screen device, to provide a screen device in which a roller pipe includes a revolving shaft 5 on which a coil spring 6 is wound integrated therein, connected to a rotator 52 rotatably disposed with respect to a stator 51 connected to a lower end of the revolving shaft, and is rotatably stored in a housing frame, the stator includes a plurality of radially arranged claws 53, holding portions 57 arranged radially on a lower surface portion of a cap member 55 which is detachably disposed at a lower end of the housing frame corresponding to the claws of the stator are disposed, the holding portions each have a holding space 58 for receiving the claw in the interior thereof, the holding space is opened outward at one end on the side of receiving the claw and closed at the other end to allow adjustment of initial winding of a coil spring integrated in a roller pipe and superior in opening-and-closing operability of a screen and manner it is retracted.