Thin Metal Roller Shutter Slats with Continuous Flexible Web
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Solution Overview
Problem
Conventional roller shutter systems have large barrel diameters due to thick slats, which complicates retrofitting and passive house construction, and suffer from noise and insulation issues, as well as aesthetic problems like bulges and creases when closed.
Innovation Solution
A roller shutter curtain with single-walled, thin metal slats connected by a continuous flexible sheet, minimizing play and barrel diameter, and featuring a curved cross-section for improved soundproofing and thermal insulation, with the flexible sheet on the inside for a smooth appearance and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thick roller shutter slats are used, then structural strength is improved, but barrel diameter increases and weight increases
Solution Approach 1:
The patent employs a thin-walled profile structure with a flexible continuous sheet material covering the slats. This allows the use of thin slats (reducing barrel diameter) while maintaining structural integrity through the continuous sheet reinforcement and optimized profile geometry.
Solution Approach 2:
The patent creates a composite structure by combining thin-walled profiled slats with a continuous sheet material that spans across the slats. This composite construction provides the necessary strength and stiffness while keeping individual slat thickness minimal, thus reducing the rolled-up barrel diameter.
2Strength
If thick roller shutter slats are used, then structural strength is improved, but weight increases making handling difficult
Solution Approach 1:
The thin-walled profile design with continuous sheet reinforcement achieves structural strength without requiring thick solid slats, significantly reducing the weight of the roller shutter curtain while maintaining adequate strength through the optimized thin-walled structure.
Solution Approach 2:
The patent uses profiled (curved cross-section) slats that provide structural strength through geometric shape rather than material thickness. The curved profile distributes stresses more efficiently, allowing thin-walled construction with reduced weight while maintaining structural integrity.
3Ease of operation
If gaps are present between roller shutter slats for hook connections, then articulation is enabled, but noise increases and thermal insulation deteriorates
Solution Approach 1:
The continuous sheet material acts as an intermediary element that spans across the gaps between slats at the hook connection points. This mediator reduces the negative acoustic effects of the necessary gaps while maintaining the articulation function, by providing a continuous surface that dampens noise.
Solution Approach 2:
The continuous sheet material provides uninterrupted coverage across all slats, creating a continuous surface that eliminates gaps and improves thermal insulation and soundproofing while still allowing the hook connections to function through the reinforced areas.
4Reliability
If a continuous sheet of flexible material is used to connect slats, then play is minimized and noise is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent combines the continuous sheet material with the slat structure in an integrated manner, where the sheet is applied over the slats and secured to provide reinforcement. This merging of components achieves joint stability and noise reduction while the integration process keeps manufacturing complexity manageable.
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
The solution results in a lightweight, quiet, and thermally efficient roller shutter with a smaller barrel diameter, suitable for retrofitting and passive house applications, offering enhanced soundproofing and insulation while maintaining a clean appearance.
Implementation Method 1
the composite of single-walled, thin roller shutter rods is connected on one side over the entire surface and almost without play by means of a continuous sheet of flexible material
Implementation Method 2
it has a smaller barrel diameter, better thermal insulation and higher soundproofing
Implementation Method 3
The typical noise development of roller shutters with play is completely suppressed
Data Source
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AI summary
The roller blind has several parallel and pivotally joined roller shutter rods (1) made from single walled, thin metal sheet. The shutter rods are connected by flexible material continuous web (2). The continuous web is glued on surface of shutter rods. The shutter rod is provided with receiving hook (3) and connecting hook (4) on longitudinal sides.