Aircraft Ceiling Panel Tool-Free Vertical Alignment
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Solution Overview
Problem
Aircraft ceiling panels made of plastic composite materials face challenges in maintaining rigidity while minimizing weight, leading to sagging issues due to gravity, which are exacerbated by design requirements for smooth lines and reduced fuel consumption, and existing fastening solutions either increase weight or complicate assembly and disassembly.
Innovation Solution
The implementation of tool-free form-fitting connections using spring-loaded fixing devices and counterparts on transverse edges of ceiling panels, which can be made of bent metal parts or plastic components, to prevent vertical offset between panels without increasing weight or assembly complexity, while allowing for movement in vehicle directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If ceiling panels are made of plastic composite materials to reduce weight, then fuel consumption is reduced, but the panels sag due to gravity and vertical offset occurs between adjacent panels
Solution Approach 1:
The ceiling panel is divided into multiple sections with fixing devices at transverse edges, allowing each section to be independently connected to adjacent panels through spring-loaded mechanisms, preventing vertical offset while maintaining overall panel integrity
Solution Approach 2:
The spring element provides dynamic force parameters that automatically adjust to counteract gravitational sagging, maintaining consistent vertical alignment between panels without adding rigid structural support that would increase weight
2Stability of the object's composition
If additional fastening elements are used to prevent sagging and vertical offset, then stability is improved, but weight increases and assembly/disassembly effort increases
Solution Approach 1:
The spring-loaded fixing device serves multiple functions simultaneously: it provides vertical alignment stabilization, allows for easy assembly and disassembly, and maintains connection security without requiring additional separate fastening elements
Solution Approach 2:
The spring element automatically adjusts and maintains the positive connection between fixing devices and counterparts, providing self-regulating stabilization without requiring external adjustment mechanisms or additional fastening components
3Stability of the object's composition
If additional fastening elements are used to prevent sagging, then vertical alignment stability is improved, but assembly and disassembly complexity increases
Solution Approach 1:
The spring-loaded mechanism automatically engages with the counterpart to create a positive connection, eliminating the need for tools or complex assembly procedures while maintaining vertical alignment stability
Solution Approach 2:
The spring element provides dynamic engagement and disengagement capability, allowing the fixing device to easily transition between locked and unlocked states while maintaining stable vertical alignment during operation
4Reliability
If the positive connection between fixing device and counterpart is made very secure, then unintentional loosening is prevented, but the force required for assembly and disassembly increases
Solution Approach 1:
The spring element provides dynamic force characteristics that maintain strong engagement during normal operation but allow controlled disengagement when intentional force is applied, balancing connection security with ease of assembly and disassembly
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 effectively minimizes vertical offset between ceiling panels, allows for easy tool-free assembly and disassembly, and maintains low manufacturing costs and weight, ensuring the panels remain securely connected without unintentional loosening.
Implementation Method 1
each fixing device and/or each counterpart comprises a component that is movable against the spring force of a spring element during the establishment and release of the positive connection
Data Source
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AI summary
The invention relates to a ceiling panel (1) for lining the interior of a vehicle, particularly an airplane, comprising a plastic composite element (3) having elements (5) disposed at the lateral edges (4) extending substantially in the movement direction X of the vehicle for fastening to a supporting structure of the vehicle or parts connected thereto. In order to avoid an offset (?Z) in the perpendicular direction between consecutive ceiling panels (1), it is provided that at least one fixation device (6) is provided on the transverse edge (8) disposed substantially transversely to the movement direction (X), and that at least one counter piece (7) is provided on the opposite transverse edge (8) as viewed in the movement direction (X), wherein the at least one fixation device (6) is configured to complement the at least one counter piece (7) and a positive connection can be produced without tools in the substantially perpendicular direction (Z), and detached again, by the interaction of each fixation device (6) with a counter piece (7) each.