Butterfly Leaf Armrest Extension for Economy Seats
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Solution Overview
Problem
Aircraft cabin space is limited, particularly in economy class, where shared armrests are often unusable by both passengers simultaneously due to lack of space, necessitating a solution to increase armrest space without altering existing constraints.
Innovation Solution
A stowable armrest extension that rotates or translates from the armrest, deploying into horizontal extensions, with linking elements to automate and direct deployment, and a central column to prevent passenger contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If shared armrests are used in economy class, then space is saved, but both passengers cannot use the armrest simultaneously
Solution Approach 1:
The armrest is divided into two separate deployable sections, one for each passenger. Each section can be independently deployed by the respective passenger, allowing simultaneous use while maintaining the compact shared structure when not in use.
Solution Approach 2:
The armrest transitions from a static shared structure to a dynamic system where each passenger can deploy their own section when needed. The armrest sections can be raised or lowered independently, providing on-demand personal space while maintaining the space-saving shared configuration at other times.
2Area of stationary object
If armrest extensions are deployed, then additional armrest space is provided, but device complexity increases
Solution Approach 1:
Each passenger operates their own armrest section independently through simple manual controls. The deployment mechanism is designed to be intuitively operated by the passenger themselves without requiring assistance or complex coordination, making the increased functionality accessible and easy to use.
Data Source
AI summary
A stowable armrest extension rotates or translates from the armrest and deploys into one or more horizontal extensions. Linking elements connect the movement of various components to direct, restrict, and automate deployment. A central column may isolate the butterfly leafs to prevent incidental contact between neighboring passengers. An actuator may apply a force to deploy the stowable armrest extension, either when a release is activated or when a top cap is moved.