Semi-rigid Shutter Slat End Cap Support with Elastic Retention
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Solution Overview
Problem
Existing end cap support devices for shutter slats are either flexible and difficult to automate, requiring manual loading, or rigid but costly and cumbersome, lacking a balance of rigidity and flexibility, and do not facilitate easy handling and automated loading.
Innovation Solution
A semi-rigid support device with an elastically deformable part that can assume two configurations, allowing secure retention and automated loading, made from molded plastic with a lattice structure for rigidity and flexibility, featuring convex blades for alignment and a pointed end for easy engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flexible plastic tabs are used to hold end caps, then the support device is easy to manufacture and disposable, but it requires manual loading and cannot be automated
Solution Approach 1:
The patent changes the rigidity parameter of the plastic tab from fully flexible to semi-rigid by incorporating a reinforcement element (such as a rib, ledge, or protrusion) that provides structural support while maintaining the basic flexibility needed for the loop configuration. This allows the tab to be handled automatically by robotic systems while still being manufacturable as a disposable component.
2Strength
If metal U-shaped supports with elastic bands are used, then the support device is rigid and returnable, but it is more expensive and requires return procedures
Solution Approach 1:
The patent employs a disposable plastic tab instead of a returnable metal support. The plastic tab is manufactured from inexpensive materials and is discarded after use, eliminating the need for costly return procedures and metal recovery operations. The semi-rigid design ensures sufficient strength for the application while maintaining cost-effectiveness.
3Ease of manufacture
If flexible plastic tabs are used, then the support device is disposable and cost-effective, but handling and automated loading becomes difficult
Solution Approach 1:
The patent modifies the rigidity parameter of the plastic tab by adding reinforcement features (ribs, ledges, or protrusions) that provide structural support. This semi-rigid configuration improves ease of handling and enables automated loading while maintaining the disposable, cost-effective nature of the plastic construction.
4Reliability
If a straight section with non-round cross-section is used to prevent pivoting, then the end caps are securely held, but the structure becomes complex and difficult to automate
Solution Approach 1:
The patent changes the cross-sectional geometry of the straight section from non-round to round, eliminating the need for complex pivoting prevention mechanisms. The secure retention is achieved through the loop configuration and the action of the end cap on the tab itself, rather than through a non-round cross-section, thereby simplifying the structure for automated handling.
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
Provides a disposable, easy-to-handle support that ensures secure retention of end caps while enabling automated loading, combining cost-effectiveness with operational efficiency.
Implementation Method 1
a section having an elastically deformable part, capable of taking at least two different configurations, a first, at rest, where it has dimensions preventing the escape of an end cap, and a second where it retracts under the effect of the passage of an end cap subjected to a force parallel to said straight part, so as to allow the escape of said end cap as well as those also subjected to said force
Data Source
Figure 1~2
Figure 3~4
AI summary
A support device for end caps of shutter slats, of the type comprising a straight portion (4) onto which the end caps are intended to be threaded, the end caps having an opening in their central portion for this purpose, and one end (5) of which is formed into a stop. It is made of a semi-rigid material, and it comprises, at its extreme portion opposite the stop-formed portion (5), a section (6) having an elastically deformable portion (60), capable of assuming at least two different configurations: a first, at rest, where it has dimensions preventing the escape of an end cap, and a second where it retracts under the effect of the passage of an end cap subjected to a force (F) parallel to the straight portion (4), so as to allow the escape of the end cap as well as those also subjected to the force (F).