Adjustable Headrest Slide Assembly for Multi-Position Support
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Solution Overview
Problem
Existing headrests for passenger vehicles and furniture lack sufficient adjustability and comfort, primarily focusing on safety rather than providing optimal support and posture, with limited height adjustment and lack of lateral support features.
Innovation Solution
A fully adjustable headrest with novel slide assemblies for multiple height adjustments, pivotally connected wing-like side support members using constant torque hinges, and a removably connected roller assembly with a spring locking mechanism for easy installation and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If headrests are designed primarily for safety with vertical adjustment only, then safety protection is improved, but comfort and support are worsened due to limited adjustability
Solution Approach 1:
The headrest is divided into multiple independent adjustable components: a vertically adjustable head support member, laterally adjustable headrest elements, and pivotally movable back and lateral supports. Each segment can be adjusted independently to provide both safety and comfort optimization.
Solution Approach 2:
The headrest incorporates multiple degrees of freedom with pivotable connections between components, allowing dynamic adjustment in vertical, lateral, and angular directions. This enables the headrest to adapt to different user positions and preferences while maintaining safety functionality.
2Ease of operation
If headrests include pivotally movable back and lateral supports for comfort, then comfort and support are improved, but device complexity is worsened
Solution Approach 1:
Multiple adjustment functions (vertical positioning, lateral support, back support, lateral supports) are merged into a single integrated headrest assembly with coordinated movement mechanisms, reducing the need for separate adjustment devices while maintaining comprehensive comfort features.
Solution Approach 2:
The headrest components serve multiple functions: the head support member provides both safety protection and vertical positioning, while the pivotally movable back and lateral supports simultaneously provide structural stability and comfort adjustment, maximizing functionality while minimizing component count.
3Ease of operation
If headrests use friction-based sliding mechanisms for height adjustment, then ease of adjustment is improved, but positioning precision and stability are worsened
Solution Approach 1:
A roller assembly acts as an intermediary mechanism between the head support member and the seat connector frame, enabling smooth vertical movement while incorporating a spring locking mechanism to precisely maintain selected positions and prevent unintended movement.
Solution Approach 2:
The spring locking mechanism automatically engages to maintain the headrest in selected positions without requiring continuous user input, while still allowing easy manual adjustment when needed. The system self-regulates between ease of movement and positional stability.
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 provides enhanced support and comfort with a total upward travel of approximately seven inches, allowing for customizable positioning and secure attachment to a seat connector frame, improving user experience in various seating environments.
Implementation Method 1
the headrest assembly is removably connected to a seat connector frame assembly that includes a roller assembly along which the headrest assembly is slidably movable
Implementation Method 2
a novel spring locking mechanism for releasably locking the headrest assembly to the seat connector frame assembly
Implementation Method 3
pivotally connected wing-like, side support members by means of constant torque hinges
Data Source
AI summary
An adjustable headrest that provides both support and comfort to the user and one that can be used in connection with various types of passenger vehicles. The adjustable headrest includes novel slide assemblies that permit multiple height adjustments of the headrest. More particularly, the headrest of the invention can be moved from a first lower position to a second intermediate position and finally to an uppermost position.