Stowage Bin Spring Retention Device for Article Stability
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Solution Overview
Problem
Existing stowage bins in mass transportation vehicles face issues with dislodgement of articles due to turbulence and passenger handling, with current solutions like secondary doors being ineffective, complex, and adding weight to the overhead structure.
Innovation Solution
A stowage bin with a spring-based article retention device mounted on the door panel, featuring a protruding portion that deflects to apply pressure on articles, preventing movement while maintaining the bin's interior volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secondary door or visor is installed inside the main stowage bin door to prevent article dislodgement, then article retention reliability is improved, but device complexity and weight increase
Solution Approach 1:
The invention extracts the essential retention function from the complex secondary door system and implements it through simple spring-loaded protruding members that press articles against the door inner side. This eliminates the need for netting, transparent panels, and mechanical securing mechanisms while maintaining retention effectiveness.
Solution Approach 2:
The spring-loaded protruding portions automatically adjust to article placement and provide continuous retention force without requiring manual intervention. The system self-regulates by allowing the springs to compress and expand based on article position, eliminating the need for passengers or flight attendants to manually secure or adjust retention mechanisms.
2Reliability
If a secondary door or visor is installed inside the main stowage bin door to prevent article dislodgement, then article retention reliability is improved, but weight of the overhead structure increases
Solution Approach 1:
The invention extracts the essential retention function from the heavy secondary door system and implements it through lightweight spring-loaded protruding members. This eliminates the weight of netting, transparent panels, and complex mechanical components while maintaining retention effectiveness through simple elastic force.
3Stability of the object's composition
If articles are placed on top of larger, heavier items in the stowage bin to reduce dislodgement risk, then article stability is improved, but usable volume of the bin interior is reduced
Solution Approach 1:
Instead of requiring articles to be stacked in a specific order (heavy items at bottom), the invention inverts the approach by providing active retention force from the door side that works regardless of article arrangement. The spring-loaded protruding members press against articles from the outside, making the retention system independent of loading sequence and enabling optimal packing flexibility.
4Loss of information
If warning placards and flight attendant announcements are used to alert passengers about potential article shifting, then passenger awareness is improved, but loss of time and operational efficiency worsen
Solution Approach 1:
The retention device performs preliminary action by preventing article dislodgement before the dislodgement can occur during turbulence or flight maneuvers. This eliminates the need for post-event warnings and announcements, as articles are secured proactively throughout the flight.
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
Effectively prevents article dislodgement during flight by applying pressure without reducing the bin's usable volume, simplifying construction, reducing weight, and eliminating the need for additional doors.
Implementation Method 1
The protruding portion deflects in response to contact with an article contained within the bin interior such that the spring member applies pressure to the article to prevent relative movement of the article
Data Source
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AI summary
An article retention device (100) may be provided for a stowage bin (30). The stowage bin may include a bin interior (32) and may include a door panel (52) that is movable between open and closed positions. The door panel may have a door inner side. The article retention device may comprise a spring member having a protruding portion protruding from the door inner side toward the bin interior when the door panel is in the closed position. The protruding portion may be deflectable in response to contact with an article contained within the bin interior such that the spring member applies pressure to the article to prevent relative moment of the article within the stowage bin.