Jalousi Wall Assembly External Wire Tensioning
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Solution Overview
Problem
Conventional passenger bridge jalousi wall assemblies are complicated and time-consuming to maintain due to the accessibility issues with torsion springs used for automatic folding mechanisms.
Innovation Solution
A jalousi wall assembly utilizing a wire tension means with gas springs externally arranged to control the length of the jalousi walls, eliminating the need for internal springs and allowing for easier maintenance and replacement without dismounting the rolls or walls, with the gas springs providing a consistent tensile force to adjust the wall lengths in response to horizontal movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If torsion springs are used inside the rolls for automatic folding, then the jalousi wall can automatically follow cabin movements, but maintenance becomes complicated and time-consuming due to accessibility issues
Solution Approach 1:
The spring mechanism is extracted from inside the roll and replaced with an external wire tension means. The wire runs externally from the roll to a tensioning mechanism, allowing the automatic folding function to be maintained while the spring components are accessible for maintenance without dismounting the roll or jalousi wall.
Solution Approach 2:
A wire acts as an intermediary between the roll and the tensioning spring mechanism. The wire transmits the tensile force from the externally mounted spring to the roll, enabling automatic folding while keeping the spring accessible for maintenance through the wall structure.
2Reliability
If torsion springs are installed inside the rolls, then automatic operation is achieved, but component replacement requires dismounting rolls or walls
Solution Approach 1:
The spring mechanism is extracted from inside the roll and replaced with an external wire tension means. The wire runs externally from the roll to a tensioning mechanism, allowing the automatic folding function to be maintained while the spring components are accessible for maintenance without dismounting the roll or jalousi wall.
Solution Approach 2:
The system is segmented into separate components: the roll, the wire, and the tensioning spring mechanism. This segmentation allows the spring to be independently accessed and replaced without affecting the roll or jalousi wall assembly, improving component replaceability while maintaining automatic operation.
3Ease of operation
If conventional spring-loaded rolls are used, then jalousi walls fold automatically in both directions, but the structure becomes complex and hard to access for maintenance
Solution Approach 1:
The spring mechanism is extracted from inside the roll and replaced with an external wire tension means. The wire runs externally from the roll to a tensioning mechanism, allowing the automatic folding function to be maintained while the spring components are accessible for maintenance without dismounting the roll or jalousi wall.
Solution Approach 2:
Instead of placing the spring inside the roll (conventional approach), the invention inverts the arrangement by placing the spring externally and using a wire to transmit force to the roll. This inversion simplifies the internal roll structure and makes the spring mechanism accessible for maintenance while preserving bidirectional automatic folding functionality.
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
This solution simplifies maintenance and replacement processes by externalizing the wire tension means, ensuring consistent operation and reducing the complexity of accessing and replacing components, thereby improving operational efficiency and reducing maintenance time.
Implementation Method 1
a wire tension means (176) comprising at least one gas spring (176a) arranged to maintain a tension in the wire (175) while the frame (154a) moves in either horizontal direction
Data Source
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AI summary
Jalousi wall assembly (170) for a passenger bridge (100), which jalousi wall assembly (170) comprises a first jalousi wall (171) in turn having a first end (171a) and a second end (171b), which first end (171a) is arranged to be wound up on, and off from, a first roll (171) with a first vertical rotation axis (A2), and which second end (171b) is arranged to be fastened to the passenger bridge (100), wherein the first roll (171) is arranged to be fastened to the frame (154a) of a movable opening (154) of the passenger bridge (100) and to follow horizontal movements of the said frame (154a) by the first jalousi wall (171) being wound up on, or off from, the first roll (171), whereby a horizontal length of the first jalousi wall (171), between the first end (171a) and the second end (171b), is adjusted in response to a horizontal movement of said frame (154a). The invention is characterised in that the jalousi wall assembly (170) further comprises a wire (175) having a first (175a) and a second (175b) end, which first end (175a) is wound about said first vertical rotation axis (A2) such that the first jalousi wall (171) is wound up on the first roll (171) when the wire (175) is pulled at its second end (175b), and in that the jalousi wall assembly (170) further comprises a wire tension means (176) comprising a gas spring (176a) arranged to maintain a tension in the wire (175) while the frame (154a) moves.