Adjustable Screen Frame Structure for On-Site Length Fitting
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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 match varying building openings, requiring disassembly and reassembly, which complicates the installation process.
Innovation Solution
A screen device design featuring a roller pipe with a coil spring for easy winding and unwinding, combined with flexible upper and lower slide guide frames that can be retracted into a screen mounting frame, allowing for adjustable length by fitting smaller units into larger ones, and a tension member loop that facilitates easy manipulation during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If screen devices are manufactured with standardized sizes for quality stabilization, then manufacturing quality is improved, but adaptability to various opening sizes deteriorates
Solution Approach 1:
The slide guide frame is divided into multiple rigid units that can be independently connected or disconnected. This segmentation allows the frame to be adjusted in length by connecting different numbers of units, enabling adaptation to various opening sizes while maintaining standardized manufacturing of each individual unit.
Solution Approach 2:
The connection structure between rigid units allows for dynamic adjustment during installation. The rigid units can be connected to form a longer frame or disconnected to form a shorter frame, providing dynamic adaptability to different opening dimensions without requiring custom manufacturing for each size.
2Adaptability or versatility
If length adjustment is performed by disassembling assembled units in the field, then adaptability to various sizes is improved, but device complexity and installation difficulty worsen
Solution Approach 1:
The slide guide frame consists of multiple separable rigid units with simple connection interfaces. This segmentation enables field adjustment by simply connecting or disconnecting units without requiring complex disassembly of the entire assembled structure, reducing installation complexity.
Solution Approach 2:
The rigid units are pre-manufactured with standardized connection interfaces and structures. This preliminary preparation allows for quick field adjustment by simply connecting the pre-prepared units, eliminating the need for complex on-site disassembly and reassembly operations.
3Stability of the object's composition
If the slide guide frame is made rigid to maintain linearity, then structural stability is improved, but flexibility for retraction and adjustment deteriorates
Solution Approach 1:
The slide guide frame is segmented into multiple rigid units that maintain linearity when connected. Each individual unit remains rigid to ensure structural stability, while the segmented structure as a whole provides flexibility for retraction and adjustment by allowing connection or disconnection of units.
Solution Approach 2:
Multiple rigid units are combined to form the complete slide guide frame. Each unit maintains its rigidity and linearity, while their combination provides the necessary flexibility for retraction and adjustment through the connection and disconnection of individual units.
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 removed and reinserted, and the tension member loop to be folded back, simplifying the cutting and alignment of the screen and roller pipe, thus streamlining the installation process.
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
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.