Roller Door Curtain Segmentation for Wind Stability and Fast Running
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Solution Overview
Problem
Existing roller doors face challenges in achieving high running speed and wind stability while ensuring easy repair and maintenance, with issues such as damage from vehicle collisions and the need to replace entire curtains due to minor damage.
Innovation Solution
A web-shaped curtain with detachable curtain segments connected by an elastically deformable connecting device, featuring a stabilizing device that counteracts deformation and allows easy replacement of individual segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If extruded aluminum profiles are used to connect curtain segments, then stability against wind loads is improved, but running speed is reduced and noise level increases
Solution Approach 1:
The connecting device changes the material parameter from rigid extruded aluminum profiles to elastically deformable material, allowing the curtain segments to flex during high-speed operation and reducing mechanical interference with the winding shaft, thereby restoring high running speeds while maintaining connection functionality
Solution Approach 2:
The connecting device is designed as an elastically deformable structure that can flex and deform during operation, similar to flexible shells and thin films, allowing the curtain to adapt to high-speed movement and winding operations without the rigidity-induced problems of aluminum profiles
2Stability of the object's composition
If extruded aluminum profiles are used to connect curtain segments, then stability against wind loads is improved, but noise level increases
Solution Approach 1:
Changing the material parameter from rigid aluminum to elastically deformable material reduces mechanical impacts and vibrations during operation, thereby reducing noise generation while maintaining the structural stability needed to resist wind loads
3Stability of the object's composition
If the curtain is made as a single piece or permanently attached segments, then stability against external influences is improved, but repair and maintenance cost increases
Solution Approach 1:
The curtain is divided into separate detachable segments that can be independently replaced. When damage occurs, only the affected segment needs to be removed and replaced, rather than replacing the entire curtain, thereby reducing repair costs and labor while maintaining overall curtain stability through the connecting device
Solution Approach 2:
Damaged curtain segments can be easily discarded and replaced with new segments while retaining the connecting device and undamaged portions of the curtain, reducing material waste and repair expenses compared to replacing the entire curtain structure
4Reliability
If the curtain is made as a single piece, then running characteristics are improved, but replacement cost increases when damaged
Solution Approach 1:
The curtain is segmented into detachable sections connected by flexible connecting devices, maintaining smooth running characteristics similar to a single-piece curtain while enabling individual segment replacement, thereby reducing replacement cost when damage occurs
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 high running speed and wind stability with reduced damage risk from collisions, allowing for simple and cost-effective repair and maintenance by replacing only damaged segments.
Implementation Method 1
a connecting device which is at least partially deformable, in particular elastically deformable, for detachably connecting the mutually facing edges of the curtain segments
Implementation Method 2
a stabilizing device which extends transversely, in particular approximately perpendicularly, to the movement path and which, at least in the closed position, counteracts a deformation of the curtain in a load direction
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention relates to a door, in particular a roller door, having a door leaf which is at least partially configured as a web-like curtain made of flexible material and which is movable along a movement path between an open position, in which it at least partially opens a wall opening and possibly forms a multi-layer winding above the wall opening, and a closed position, in which it at least partially closes the wall opening, wherein the web-like curtain is assigned a stabilizing device which extends transversely, in particular approximately perpendicularly, to the movement path and which, at least in the closed position, counteracts deformation of the curtain in a load direction extending perpendicularly to a closing plane defined by the movement path and the stabilizing device, wherein the web-like curtain has at least two curtain segments which follow one another in the direction of the movement path and which are releasably connected to one another along at least one predetermined separating line, or a predetermined separating region, extending preferably approximately perpendicular to the movement path in the closing plane, in such a way that the mutually facing edges of the curtain segments that extend transversely, in particular perpendicularly, to the movement direction remain deformable.