Underseat IFE Cabling Assembly for Modular Maintenance
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Solution Overview
Problem
Conventional in-flight entertainment (IFE) systems in aircraft require cumbersome and complicated installation and servicing due to the need for extensive cabling and wiring, making upgrades and maintenance impractical without replacing the entire seating assembly.
Innovation Solution
The implementation of a line replaceable unit (LRU) with dedicated cabling paths that route around spreader and leg structures, allowing the passenger accommodation feature tray to be installed or removed as a single unit, eliminating the need for extensive rewiring and enabling easier retrofitting and upgrading of IFE systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cabling is integrated into the seating structure through spreaders and leg structures, then the IFE system provides stable connectivity to passenger seats, but the system becomes difficult to service or upgrade without replacing the entire seating assembly
Solution Approach 1:
The patent divides the IFE system into separable modules: the seating assembly remains fixed in the aircraft, while the IFE components (monitors, control units, cabling) are extracted into a removable unit that can be serviced independently. This segmentation allows the cabling to be routed through the seating structure for stable connectivity while enabling easy removal and replacement of the IFE components without dismantling the entire seating assembly.
Solution Approach 2:
The IFE system components and their associated cabling are extracted from the fixed seating structure into a separate, removable unit. This extraction allows the cabling to maintain its integrated routing through spreaders and legs for reliability, while the entire IFE assembly can be removed as a single unit for servicing or upgrading, eliminating the need to replace the entire seating assembly.
2Adaptability or versatility
If extensive cabling and wiring are integrated into the seating assembly to connect SEB to individual seatback components, then the IFE system achieves comprehensive coverage, but installation and maintenance become cumbersome and complicated
Solution Approach 1:
The patent combines the SEB (seat electronic box), cabling, and IFE components into a single integrated unit that can be installed as one assembly. This merging allows comprehensive IFE coverage to be achieved while simplifying installation, as the entire cabling and component assembly can be installed in a single operation rather than requiring complex individual routing and connection of multiple separate components.
Solution Approach 2:
The cabling and IFE components are pre-assembled into a complete unit before installation in the aircraft. This preliminary assembly allows the extensive cabling required for comprehensive IFE coverage to be prepared and tested in advance, then installed as a single unit, dramatically reducing the complexity and time required for actual installation in the aircraft seating assembly.
3Ease of operation
If the seating assembly is designed with hollow or tubular spreaders to route cabling, then the cabling can be hidden and passenger comfort is maintained, but upgrading individual components requires partial dismantling of the seating assembly
Solution Approach 1:
The patent segments the IFE system into a removable unit that can be extracted from the seating assembly without dismantling the seating structure itself. The hollow or tubular spreaders provide concealed cabling routing for passenger comfort, while the segmented design allows the IFE unit to be removed as a complete assembly through existing access points, eliminating the need to partially dismantle the seating structure for upgrades or repairs.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
An aircraft seating assembly including a replaceable underseat passenger accommodation feature tray includes passenger seats incorporating in-flight entertainment (IFE) system components for the use of the occupying passengers or neighboring passengers in the seats immediately behind. The IFE system components are connected by internal cabling paths within the seating assembly to contact points, and seat electronic boxes (SEB) mounted to a replaceable passenger accommodation feature tray provide IFE services to the system components. The SEB is connected to a second set of contact points on the feature tray by cabling paths that circumvent the spreader and leg structures of the seating assembly. When the feature tray is fully mounted to the seating assembly, the SEB is connected to the IFE system components through the cabling paths and contact points at which the cabling paths terminate, each contact point on the feature tray having a counterpart in the seating assembly.