Aircraft Stowage Bin Latch With Electrical Locking Control
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Solution Overview
Problem
Current aircraft overhead luggage bins rely on mechanical latch systems that lack the ability to be independently controlled and secured during flight, posing safety concerns and requiring manual operation, which is not ergonomic or efficient.
Innovation Solution
An electrically activated stowage bin latch system that includes a solenoid and spring mechanism, integrated with a stowage bin activation switch capable of receiving power and signals from the aircraft electrical system, allowing for remote control and providing emergency illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a mechanical latch system is used, then the structure is simple and easy to manufacture, but the bin cannot be independently controlled or secured during flight operations
Solution Approach 1:
The patent replaces the purely mechanical latch system with an electrically activated system. A solenoid actuator is introduced to electrically engage and disengage the latch mechanism, allowing independent control of overhead bins through electrical signals from the cabin management system or manual switches, thereby achieving automation while maintaining structural simplicity through modular design
Solution Approach 2:
The latch system is designed with multi-functionality to justify the added complexity. The same electrical activation system enables both automated control through cabin management integration and manual operation through passenger switches. Additionally, the switch assembly provides dual functions: bin activation and emergency lighting, reducing overall system complexity through functional consolidation
2Reliability
If an electrically activated latch system is implemented, then safety is enhanced through independent control, but the device complexity increases
Solution Approach 1:
The mechanical latch system is enhanced by substituting the manual activation mechanism with an electrically activated solenoid system. This allows the bin to be securely locked during flight operations through electrical control from the cabin management system or manual switches, significantly improving safety and reliability while maintaining ease of operation
Solution Approach 2:
The system incorporates feedback mechanisms through status indicators that provide visual confirmation of bin latching state. The activation switch and lighting system work together to give passengers and crew clear information about bin status, enhancing reliability by preventing accidental opening during flight while maintaining simple operation through intuitive interface design
3Ease of operation
If a mechanical handle mechanism is used, then the ease of operation is good for manual opening, but the ability to provide status information and emergency lighting is lost
Solution Approach 1:
The activation switch assembly is designed as a multi-functional component that consolidates multiple functions: it serves as the manual activation mechanism for the latch, provides visual status indication of bin state, and functions as an emergency lighting source. This universal design maintains ease of manual operation while adding passenger interface capabilities and safety features without requiring separate mechanisms
Solution Approach 2:
The patent merges the activation switch, status indicator, and emergency lighting into a single integrated assembly. This consolidation provides versatility by enabling the same physical component to deliver latch activation, bin status information, and emergency illumination, thereby enhancing adaptability while maintaining simple, intuitive manual operation through a unified interface
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 safe and ergonomic control of overhead stowage bins, enhancing passenger safety by allowing independent locking and unlocking through the cabin management system, with improved ergonomics and flexibility in design, and providing emergency lighting.
Implementation Method 1
A stowage bin latch mechanism is provided that is configured to latch the movable stowage bin portion in the closed position and unlatch the movable stowage bin portion to be released to the open position. A stowage bin activation switch is configured operate the stowage bin latch mechanism.
Data Source
AI summary
An electrically activated latch for aircraft stowage bins includes an overhead stowage bin module having a stationary support structure and a movable stowage bin portion. An electrically operated stowage bin latch mechanism latches the movable stowage bin portion in a closed position and unlatches the movable stowage bin portion to an open position. An electrically operated stowage bin activation switch operates the stowage bin latch mechanism, allowing the aircraft stowage bins to be locked by independently controlling the overhead stowage bins through the aircraft cabin management system, or by control of the latch by the stowage bin activation switch.