Aircraft Overhead Bin Latch Assembly With Cable-Linked Indicator
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Solution Overview
Problem
Existing latch systems in aircraft overhead storage bins are unreliable, leading to security concerns and operational issues.
Innovation Solution
A latch system comprising a paddle button assembly, a first latch assembly with a hook and striker mechanism, and a cable that disengages the hook and striker when the button is actuated, allowing the bucket to move between open and closed positions, with an indicator to ensure proper latching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional latch system is used in aircraft overhead storage bins, then the structure is simple, but the reliability is poor leading to security concerns
Solution Approach 1:
The latch system is divided into separate functional modules: a latch mechanism with hook and striker, a cable actuation system, and an indicator system. This segmentation allows each component to be optimized for its specific function while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
An indicator mechanism is integrated into the latch system to provide visual feedback on the latched state. The indicator moves to different positions based on whether the hook is engaged with the striker, giving operators reliable information about system status without adding significant complexity.
2Ease of operation
If a reliable latch system with indicator is implemented, then safety and usability are enhanced, but the device complexity increases
Solution Approach 1:
The latch system incorporates a self-indicating mechanism where the indicator is mechanically linked to the hook and striker engagement. The system automatically shows its state without requiring separate sensors or complex electronics, maintaining ease of operation while limiting complexity increase.
Solution Approach 2:
A cable serves as an intermediary between the actuator and the latch mechanism, allowing force transmission over distance while enabling independent optimization of each component. This intermediary approach simplifies the overall design by decoupling the actuation and latching functions.
Data Source
AI summary
A latch system that includes a paddle button assembly having a button that is movable between a home position and an actuation position, a first latch assembly that includes a first striker assembly and a first hook assembly, and a first cable that extends between the paddle button assembly and the first latch assembly. Movement of the button from the home position to the actuation position moves the first cable, thereby disengaging the first hook assembly and the first striker assembly.