Aircraft Cabin Fastening Sleeve for Rapid Rotational Attachment
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Solution Overview
Problem
The current methods for installing and maintaining aircraft cabin interior components are time-consuming, requiring complex dismantling and reassembly, which hampers efficiency and productivity.
Innovation Solution
A fastening apparatus comprising an inner sleeve fixed to a fastening tube, an outer sleeve that can rotate relative to the inner sleeve, and a holding element that aligns with the fastening tube, allowing for quick installation and maintenance by enabling rotational attachment and positive locking mechanisms, thereby simplifying the attachment of cabin interior components to the aircraft cabin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional individual installation methods are used for cabin interior components, then each component can be installed separately, but the installation time and maintenance time are significantly increased
Solution Approach 1:
The fastening apparatus employs a nested structure where the inner sleeve is inserted into the outer sleeve, and the holding element is received within the outer sleeve. This nested configuration allows multiple components to be integrated into a compact assembly that can be rapidly installed as a single unit, dramatically reducing installation time while maintaining the capability for individual component access during maintenance
Solution Approach 2:
The fastening apparatus is divided into separable components (inner sleeve, outer sleeve, holding element) that can be independently manufactured and assembled. The holding element can be detached from the outer sleeve, enabling maintenance of cabin interior components without complete dismantling, thus improving both installation efficiency and maintenance accessibility
2Ease of operation
If traditional fixed attachment methods are used for cabin interior components, then structural stability is maintained, but the complexity of dismantling and reassembly increases significantly
Solution Approach 1:
The fastening apparatus incorporates rotational movement capability where the outer sleeve can rotate relative to the inner sleeve about a common axis. This dynamic feature allows the holding element to be aligned and positioned easily during installation, and enables simple rotational detachment during maintenance, greatly simplifying operations while the positive locking mechanism ensures structural stability when installed
Solution Approach 2:
The alignment region with the groove acts as an intermediary mechanism that guides the holding element into proper alignment with the fastening tube. The groove receives the holding element and provides automatic alignment, eliminating the need for complex alignment procedures while maintaining secure attachment, thus reducing operational complexity without compromising stability
3Ease of repair
If complex dismantling procedures are used for maintenance, then proper alignment and secure fastening are ensured, but maintenance time is significantly increased
Solution Approach 1:
The holding element is pre-configured with features that engage with the alignment region and groove, so that when the holding element is inserted into the outer sleeve, automatic alignment occurs before final securing. This preliminary alignment action ensures proper positioning is achieved automatically during installation and maintenance, eliminating time-consuming manual alignment procedures while ensuring correct fastening
Solution Approach 2:
Instead of requiring dismantling of the entire fastening system for maintenance, the design allows the holding element to be independently detached from the outer sleeve while the inner sleeve remains secured to the fastening tube. This inverted approach to maintenance access enables service personnel to access and maintain cabin interior components without removing the entire fastening apparatus, dramatically reducing maintenance time while ensuring proper reassembly through the self-aligning groove mechanism
Data Source
AI summary
A fastening apparatus and fastening arrangement for fastening a cabin interior component, aircraft cabin and aircraft. To improve installation time and maintenance time, a modular fastening apparatus makes the decoupled rotational attachment of cabin interior components to the attachment structure possible, which attachment structure is in turn supported by the primary structure of the aircraft. The cabin interior component, for example a luggage bin, can be fastened simply by the fastening apparatus. The fastening apparatus includes an inner sleeve which can be plugged over a predefined fastening tube. The fastening apparatus can compensate for tolerances between the attachment structure and the cabin interior component and can prevent transmission of undesired forces and torques.