Segmented Screen Guide Frame for Field Length Adjustment
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Solution Overview
Problem
Existing screen devices face challenges in easy length adjustment during installation due to standardized sizes that may not fit varying building openings, requiring disassembly and reassembly, which complicates the adjustment process.
Innovation Solution
A screen device design featuring a roller pipe with a coil spring, upper and lower slide guide frames made of rotatable rigid units with flexibility, and a tension member loop, allowing for easy retraction and adjustment of the screen device's length by fitting smaller units into larger ones within a screen mounting frame, facilitating cutting and alignment during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If screen devices are manufactured in standardized sizes, then production efficiency and stock control are improved, but adaptability to varying building openings deteriorates
Solution Approach 1:
The slide guide frame is divided into multiple rigid units that can be independently removed and adjusted. This segmentation allows the frame to be customized for different opening sizes while maintaining standardized manufacturing of individual units, resolving the contradiction between production efficiency and adaptability.
Solution Approach 2:
The slide guide frame transitions from a fixed standardized structure to a dynamic adjustable structure. The rigid units can be reconfigured during installation to match various building opening dimensions, enabling the same standardized components to adapt to different installation scenarios.
2Reliability
If screen devices are delivered in assembled state, then quality stabilization is improved, but ease of adjustment in field of installation deteriorates
Solution Approach 1:
The assembled slide guide frame is segmented into removable rigid units connected by coupling portions. This allows quality-stabilized assembled units to be easily disassembled and reconfigured in the field without requiring complete disassembly, maintaining both reliability and ease of adjustment.
Solution Approach 2:
The rigid units are designed to nest within each other when disassembled, with smaller units fitting into larger ones. This nesting design simplifies storage and handling during field adjustment while maintaining the integrity of the assembled structure during delivery.
3Adaptability or versatility
If adjustment in field of installation is performed by disassembling and reassembling, then adaptability to varying sizes is improved, but device complexity and work complexity increase
Solution Approach 1:
The slide guide frame is segmented into standardized rigid units with simple coupling mechanisms. This segmentation reduces the complexity of field adjustment by allowing simple removal and reconfiguration of individual units rather than complex disassembly and reassembly procedures.
Solution Approach 2:
The rigid units are pre-assembled and quality-tested at the manufacturing facility before delivery. This preliminary action simplifies field installation work, as the units only require simple coupling together rather than complex assembly procedures, reducing both device complexity and work complexity.
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 straightforward length adjustment by allowing the upper slide guide frame to be easily taken out and retracted, reducing complexity in cutting and aligning components, thus simplifying the installation process while maintaining structural integrity.
Implementation Method 1
a roller pipe to which one of left and right ends of the screen is attached, the roller pipe configured to be rotated by an elastic force of an integrated coil spring and wind the screen on an outer periphery thereof
Data Source
Figure 1~2
Figure 3(a)~4
Figure 5~6
AI summary
To provide a screen device which allows an easy length adjustment work configured in such a manner that when the size of first rigid units 24 which constitute an upper slide guide frame portion 15 is smaller than the size of second rigid units 17 which constitute a lower slide guide frame portion 16 and the upper slide guide frame portion and the lower slide guide frame portion are retracted in the interior of a screen mounting frame 10, side wall portions 18 of the first rigid units are fitted in between the side wall portions of the second rigid units, the upper slide guide frame portion intersects the lower slide guide frame portion in the interior of the screen mounting frame, connection of the first rigid units can be released at an arbitrary position in the interior of the screen mounting frame when adjusting the length of the screen device 1, and the upper slide guide frame portion can be taken out from the screen mounting frame, so that an adjustment of the length in the field of installation is facilitated.