Pivoting Lateral Stabilizers for Aircraft Headrest Stability
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Solution Overview
Problem
Commercial aircraft headrests often fail to maintain a stable position for passengers' heads, leading to discomfort and wakefulness during flights, as side flaps tend to move and cause neck strain.
Innovation Solution
A headrest design featuring a central main body with pivotally coupled lateral stabilizers that can move between retracted and stabilizing positions, providing lateral barriers to support the head and limit movement, along with a collapsible shade and optional retractable chin rest for enhanced comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If side flaps are added to the headrest to provide lateral support, then head stability is improved, but the side flaps tend to move and flatten causing neck strain
Solution Approach 1:
The lateral stabilizers are designed to be movable rather than fixed, allowing them to dynamically adjust to the passenger's head position and shape. The stabilizers can pivot between a retracted position and a stabilizing position, and can be manually adjusted to conform to different head sizes and shapes, providing stable support without flattening and causing neck strain
Solution Approach 2:
The headrest is divided into distinct functional components: a central main body and separate lateral stabilizers. This segmentation allows each component to perform its specific function independently - the main body provides primary head support while the lateral stabilizers provide adjustable side support, preventing the entire structure from flattening under pressure
2Ease of operation
If lateral stabilizers are made movable to adjust to different head shapes, then comfort is improved, but device complexity increases
Solution Approach 1:
The lateral stabilizers incorporate a simple pivot mechanism that allows them to move between retracted and stabilizing positions. This dynamic capability enables adjustment to different head shapes and sizes while maintaining a relatively simple overall structure that does not require complex mechanical systems
Solution Approach 2:
The lateral stabilizers can be manually positioned by the passenger to conform to their head shape, and once positioned, they naturally maintain their shape-providing position through their structural design. The stabilizers self-adjust to provide optimal support without requiring additional actuators or complex control mechanisms
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
The headrest maintains a stable and comfortable position for passengers, reducing neck strain and promoting restfulness by limiting lateral head movement and offering adjustable shading and chin support.
Implementation Method 1
The head rest incorporates two wings. The head rest is moveable from a first position in which the wings are substantially retracted, to a second position in which the wings extend forwardly on either side of a central part of the head rest. The wings may be formed integrally with the central part of the head rest or may be formed as separate elements, where they are pivoted on a horizontal shaft.
Data Source
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AI summary
A headrest for a seat assembly includes a central main body having a first side and a second side that is opposite from the first side. A first lateral stabilizer is moveably coupled to the first side of the central main body. The first lateral stabilizer is distinct from the central main body. A second lateral stabilizer is moveably coupled to the second side of the central main body. The second lateral stabilizer is distinct from the central main body. The first lateral stabilizer and the second lateral stabilizer are movable between retracted positions and stabilizing positions.