Roller Shutter Box Z-Profile Coupling
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Solution Overview
Problem
Traditional roller shutter boxes face challenges in easy coupling and aesthetics, with existing solutions either compromising on stability or requiring strict tolerances and complex shaping, and struggle to position the joining area close to the top, especially in semicircular designs.
Innovation Solution
A roller shutter box design featuring a Z-shaped upper profile with an angled end portion and an S-shaped coupling portion with humps, allowing for easy and stable coupling while minimizing the visible connection area, enabling closer profile alignment and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing seat dimensions are increased to improve ease of coupling, then the coupling becomes easier, but the aesthetic appearance deteriorates due to larger visible connection area
Solution Approach 1:
The housing seat is segmented into multiple functional zones: a first tract for guiding the coupling portion, a second tract forming the entrance aperture, and a third tract creating the abutment area. This segmentation allows each zone to perform its specific function optimally while maintaining overall compact dimensions that satisfy aesthetic requirements.
Solution Approach 2:
The housing seat utilizes three-dimensional spatial arrangement with tracts extending in different directions and orientations. The first tract extends in a first direction, the second tract in a second direction, and the third tract in a third direction, creating efficient use of space that reduces the overall footprint while maintaining ease of coupling operations.
2Area of stationary object
If strict tolerances are applied to the seat profiling to improve aesthetic appearance, then the profiles can be positioned closer together, but the manufacturing complexity and cost increase
Solution Approach 1:
Different regions of the housing seat are designed with different geometric characteristics suited to their specific functions. The first tract has guiding surfaces with specific angles, the second tract provides entrance access, and the third tract creates the abutment area. This local optimization allows adequate tolerances in each region while achieving overall compact positioning.
Solution Approach 2:
The housing seat employs specific geometric parameters including angled surfaces, curved surfaces, and defined tract dimensions that are optimized to provide both aesthetic appearance and functional performance. These parameter choices allow for standard manufacturing tolerances while achieving the desired compact profile positioning.
3Area of stationary object
If the housing seat is shaped to guide the coupling portion closely, then aesthetic appearance improves, but the coupling operation becomes more difficult and requires raising the lower profile
Solution Approach 1:
The coupling portion is designed with flexible characteristics that allow it to adapt dynamically during the coupling operation. The elongate body can deform or flex to navigate through the housing seat tracts, and the engagement features can adjust their position to facilitate insertion while maintaining the compact final position.
Solution Approach 2:
The housing seat acts as an intermediary structure that mediates between the coupling portion and the upper profile. It provides guiding surfaces and abutment areas that facilitate the coupling operation without requiring the lower profile to be raised, by creating intermediate zones that guide and support the coupling portion throughout the insertion process.
4Ease of operation
If the entrance aperture is made larger to improve ease of coupling, then coupling becomes easier, but the aesthetic appearance deteriorates
Solution Approach 1:
The entrance aperture is segmented into the second tract of the housing seat, which is specifically designed to provide adequate access for the coupling portion while maintaining compact overall dimensions. This tract is optimized to allow passage of the coupling portion without requiring excessive aperture size, balancing aesthetic requirements with operational ease.
Data Source
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AI summary
The invention relates to a roller shutter box comprising an upper profile 10 and a lower profile 20, detachably connected to the upper profile by means of an extremal coupling portion 21 which engages a housing seat 11 made at an extremal portion 10′ of the upper profile, the latter portion having a substantially Z-shaped cross-section. The housing seat 11 is delimited in particular by an angled end portion 15 which defines with the main body 12 of the upper profile the access opening 16 to the seat. The coupling portion comprises a tongue 23 which engages the housing seat in catching relation. The angled end portion defines a flat surface 18 facing the seat and forms an acute angle a in relation to the perpendicular to a plane t1 which is tangent to the main body 12. The coupling portion has two humps 24, 25 of opposed concavity and sized so that one hump touches the angled end portion, while the other touches the main body.