Roller Shutter Slat with Parallel Spiral Edges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing roller shutter designs with bent metal sheets and spiral edges face challenges in production cost, complexity, and stability issues, particularly with visibility and wind resistance, as they require laborious and expensive production processes and can detach at narrow angles.
Innovation Solution
A roller shutter slat structure featuring an even elongated sheet with longitudinal spiral edges, where both spirals have the same rotation direction and lie on the same plane, allowing for easier production, stability, and the creation of apertures for transparency, without risking slat disengagement, using conventional cutting and bending methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If spiral-shaped edges are used for slat connection, then slats can be easily mounted together in a sliding way, but the slats can detach between each other at narrow winding angles
Solution Approach 1:
The patent applies asymmetry by giving the two spiral-shaped edges opposite rotation directions (one clockwise, one counter-clockwise). This asymmetric configuration prevents the spirals from completely unwinding and detaching, while still allowing them to slide together for assembly. The opposite rotation directions create a mechanical interlock that maintains connection stability at various angles.
2Strength
If heavy sheet material is used for grille roller shutters, then protection is provided, but the production process becomes laborious and expensive
Solution Approach 1:
The patent segments the shutter into multiple slats that can be individually manufactured and then assembled together through the spiral edges. This segmentation allows for standardized, automated production of individual slats using conventional cutting and bending machines, reducing overall production complexity and cost while maintaining the protective function of the complete shutter assembly.
3Illumination intensity
If apertures are made on slats after bending, then transparency is achieved, but the production process becomes complex
Solution Approach 1:
The patent applies preliminary action by creating apertures in the slats before the bending and spiral formation steps. This sequencing allows apertures to be cut using conventional machines on flat sheets, which is simpler and more cost-effective than attempting to cut or form apertures after the complex three-dimensional spiral shapes are created. The apertures are then carried through the forming process, maintaining transparency while simplifying manufacturing.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
A slat for roller shutters comprising an even elongated sheet (100) having a longitudinal direction (90) and a transversal direction (40), the sheet (100) having a first longitudinal edge and a second longitudinal edge, wherein the first longitudinal edge forms a first spiral (50) and the second longitudinal edge forms a second spiral (60), wherein the first spiral (50) and second spiral (60) have a same rotation direction (70, 80), wherein the first and second spirals have a first and a second longitudinal axis (20, 30) parallel to the longitudinal direction (90), the sheet (100) and the first and second longitudinal axis (20, 30) laying on a same plane.