Weatherproof Roller Shutter Bar Fastening Mechanism
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Solution Overview
Problem
Existing rolling shutter systems face challenges in withstanding severe weather conditions due to deformation stresses caused by pressure differences, requiring complex and labor-intensive installation methods that involve drilling and two-person teams.
Innovation Solution
A single-person installation method for a weather protection bar on rolling shutters, utilizing a T-shaped nut and sliding pivot connection with a spring mechanism, allowing for quick and secure fixation without piercing the apron, using a barrel and cylinder system with a pinning system for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bars are fixed on the roller shutter using screws passing through the slats from the outside, then the resistance to bad weather is improved, but the installation complexity and manpower requirements increase
Solution Approach 1:
Instead of inserting screws from the outside through the slats, the invention inverts the approach by inserting the barrel from the inside of the building through the slat groove. The nut is then engaged from the inside, eliminating the need for outside access and two-person installation teams.
Solution Approach 2:
The invention introduces a specialized fastening mechanism consisting of a barrel and nut with a T-shaped profile that engages with the slat groove. This intermediary device enables single-person installation by providing a self-aligning, blind-friendly fastening system that doesn't require drilling or precise hole alignment.
2Ease of operation
If screws are inserted blind without visual alignment, then the installation can be done from one side, but the installation time increases and precision decreases
Solution Approach 1:
While not explicitly using color changes, the invention employs a mechanical indication system where the T-shaped nut profile provides tactile and visual feedback during insertion. The groove-nut engagement creates a clear mechanical stop and alignment indication, allowing the installer to know when proper alignment is achieved without needing to see the holes.
Solution Approach 2:
The slat groove is pre-formed during manufacturing with precise dimensions and orientation. This preliminary action ensures that when the barrel is inserted, it automatically aligns with the groove, eliminating the need for现场 hole drilling or alignment adjustments during installation.
3Reliability
If the bar is fixed without play against the apron, then the weather resistance is improved, but the device complexity increases
Solution Approach 1:
The nut features an asymmetric T-shaped profile where the head portion is wider than the foot portion. This asymmetry ensures that when engaged with the slat groove, the wider head creates a tight, play-free connection that prevents movement between the bar and apron under weather loads.
Solution Approach 2:
The fastening mechanism concentrates the weather resistance function at the local interface between the nut head and the slat groove. This localized tight connection provides the necessary rigidity and play-free fixation exactly where needed, while the rest of the system remains relatively simple.
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
Enables rapid and efficient installation of weather protection bars on rolling shutters, ensuring no play between the bar and apron, reducing manpower demands and time, while providing effective resistance to pressure and depression during bad weather.
Implementation Method 1
the said means adapted to constrain the head of the nut towards the opening of the groove are a spring arranged between the barrel and the cylinder
Implementation Method 2
these two elements having a radial through hole intended to receive a pin in said second position, so as to block the sliding pivot connection in this position
Implementation Method 3
the head of the nut is sized to be in interference fit with the groove in said second position
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The assembly has a weatherproof device to fix a weatherproof bar with an apron (200). A barrel (120) of the device is pivoted in a cylinder (110) of the device by a quarter-turn from a position, in which a head (132) of a nut is penetrated through a groove (203), towards another position in which the head is engaged with the groove and largest width of the head is perpendicular to a longitudinal direction of the groove to fix the device to a strip (202) of the apron. Profile of the groove corresponds to a profile of the nut formed on an inner face of the apron strip. An independent claim is also included for a method for placing a weatherproof device on an apron of a roller shutter.