Deployable transfer member for a lavatory
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Solution Overview
Problem
Commercial aircraft lavatories are too small for individuals with reduced mobility, making them difficult to access and use, and existing transfer boards are separate, easily lost, and cumbersome to deploy within the confined space.
Innovation Solution
A deployable transfer member is integrated into the lavatory wall, moving between a stowed position against the wall and a deployed position supported by the toilet, allowing easy transfer between areas, including a bench segment extending towards the sink, with a smooth, contoured design for safe and independent use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lavatory size is increased to improve accessibility for persons of reduced mobility, then ease of operation is improved, but the space available for other components (such as passenger seating) within the internal cabin is reduced
Solution Approach 1:
The transfer member is divided into multiple segments (first transfer segment, second transfer segment, third transfer segment) that can be deployed independently or in combination, allowing the transfer function to be provided without permanently occupying additional lavatory space. The segmented design enables compact stowage when not in use.
Solution Approach 2:
The transfer member transitions between a stowed configuration (occupying minimal space) and a deployed configuration (providing transfer assistance). This dynamic transformation allows the same space to serve different functions at different times, resolving the contradiction between accessibility needs and space constraints.
2Ease of operation
If a separate transfer board is provided to assist individuals with reduced mobility, then ease of operation is improved, but the device complexity increases and the board may be lost or misplaced
Solution Approach 1:
The transfer member is integrated with the lavatory structure through moveable coupling mechanisms (hinges, securing devices), combining the transfer function with the existing lavatory components. This eliminates the need for separate, portable transfer boards and ensures the transfer assistance is always available in the correct location.
Solution Approach 2:
The transfer member serves multiple functions: it provides transfer assistance, can be secured in various positions, and integrates with the lavatory's existing structure. This multi-functionality reduces the need for additional separate devices while maintaining ease of operation.
3Ease of operation
If the transfer member is made longer to extend from the wheelchair area to the toilet, then ease of operation is improved, but the device complexity and space requirements increase
Solution Approach 1:
The transfer member is divided into multiple segments that can be deployed in sequence or independently, allowing the total transfer distance to be achieved without requiring a single long, complex structure. Each segment can be simpler in design while collectively providing the full transfer capability.
Solution Approach 2:
The transfer member utilizes three-dimensional space through vertical deployment and angular positioning, allowing it to span the required distance without requiring excessive linear length in a single dimension. The segmented structure can fold or extend in multiple directions to achieve the necessary reach.
Data Source
AI summary
A lavatory includes a toilet, a wall proximate to the toilet, and a transfer member moveably secured to the wall. The transfer member is moveable between a stowed position away from the toilet, and a deployed position. At least a portion of the transfer member in the deployed position is supported by at least a portion of the toilet.