Rolling Shutter Laths With Longitudinal Grooves For Rigidity
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Solution Overview
Problem
Traditional rolling shutters with telescopic laths suffer from structural rigidity issues, limited usability due to central flexing, noise generation under wind, and complex assembly processes.
Innovation Solution
A rolling shutter design featuring laths with longitudinal grooves for enhanced mechanical strength, modular construction, and reduced noise, utilizing multiple hooks for secure connection and easy assembly, allowing for high flexibility and compatibility with standard guides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If laths are connected only at ends by hooks, then assembly is simpler, but structural rigidity deteriorates and central flexing occurs
Solution Approach 1:
The connection system is segmented into multiple hooks distributed along the lath length rather than a single end connection. This segmentation allows the structure to maintain rigidity through distributed support points while keeping each individual hook connection simple for assembly.
Solution Approach 2:
The connection approach transitions from one-dimensional end-point connections to a multi-dimensional arrangement where hooks are distributed along the longitudinal dimension of the lath. This dimensional expansion of connection points fundamentally improves structural rigidity without complicating the basic hook connection mechanism.
2Adaptability or versatility
If laths are made longer for better coverage, then usability improves, but structural stability deteriorates due to increased flexing
Solution Approach 1:
Multiple hooks are segmented along the lath length to provide distributed support. This segmentation allows long laths to maintain structural stability by creating multiple support zones that prevent excessive flexing and bending, enabling longer laths to be used without sacrificing stability.
Solution Approach 2:
The distribution parameter of hooks along the lath is changed from concentrated at ends to distributed along the length. This parameter change in hook positioning allows the lath to span longer distances while maintaining structural stability through increased support frequency.
3Reliability
If traditional U-shaped hooks are used, then connection is achieved, but assembly complexity increases due to axial locking requirements
Solution Approach 1:
The complex axial locking mechanism is extracted and replaced with a simpler friction-based retention system. The hook design is simplified to rely on friction and geometric interference rather than dedicated locking elements, reducing assembly complexity while maintaining connection reliability.
Solution Approach 2:
The hook-lath connection system is designed to be self-retaining through friction and geometric fit without requiring separate locking components. The connection automatically secures itself through the interaction of hook geometry with the lath, eliminating the need for additional axial locking elements.
4Reliability
If laths are subjected to wind loads, then operational reliability is tested, but harmful vibrations and noise are generated
Solution Approach 1:
Multiple hooks are merged into a distributed connection system along the lath. This merging of connection points creates a more rigid overall structure that resists wind-induced vibrations and noise by distributing mechanical stresses across multiple attachment points rather than concentrating them at the ends.
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
A rolling shutter (1) is configured to be connected to a winding roller (3) and to be slidingly engaged along lateral support guides (5), the rolling shutter (1) comprising a plurality of laths (2, 2') and of hooks (4), wherein the laths (2, 2') are mutually movable connected by means of the hooks (4), wherein each of the laths (2, 2') comprises a top portion (11) along the which is delimited a first linear groove which extends for the entire lath (2, 2') and a bottom portion (12) along which a second linear groove is defined which extends for the entire lath (2, 2'), the hooks (4) are configured to slidingly engage the first linear groove and the second linear groove of the laths (2, 2') along said first direction (7), and to allow the approach, the removal and the relative rotation of the laths (2, 2') connected by means of the hooks (4).