Four-Way Adjustable Headrest With Independent Vertical And Horizontal Motion
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Solution Overview
Problem
Conventional automobile passenger seat headrests lack the ability to independently adjust in multiple directions with ease, requiring complex mechanisms and limiting user convenience.
Innovation Solution
An adjustable headrest system that moves vertically and horizontally in response to applied forces when a button is actuated, utilizing a locking frame, slide rails, and elastic elements to facilitate simultaneous unlocking and independent locking along these axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional headrest mechanisms are used, then the headrest can be adjusted, but the adjustment mechanism becomes complex and user convenience is limited
Solution Approach 1:
The headrest adjustment mechanism is segmented into independent vertical and horizontal adjustment systems. Each direction of movement has its own locking and unlocking mechanism, allowing simplified control for each individual adjustment while achieving multi-directional functionality. The vertical adjustment uses slide rails with locking pins, while horizontal adjustment uses a separate telescopic mechanism with its own lock.
Solution Approach 2:
The headrest employs dynamic locking mechanisms that transition between locked and unlocked states based on user input. The button-actuated release mechanism dynamically changes the state of locking pins and telescopic locks, enabling easy transitions between fixed and adjustable positions without requiring complex manual manipulation of multiple components.
2Adaptability or versatility
If multi-directional adjustment capability is added, then user comfort is enhanced, but the mechanism complexity increases
Solution Approach 1:
The patent merges multiple adjustment functions into a unified headrest assembly where vertical and horizontal adjustments are integrated but independently controllable. The locking frame combines both vertical locking pins and horizontal telescopic locks within a single structure, allowing multi-directional adaptability while maintaining relatively simple individual mechanisms for each degree of freedom.
Solution Approach 2:
The button-actuated release mechanism serves as a universal control for both vertical and horizontal adjustments. A single button input can trigger unlocking in either or both directions, providing multi-functional control that enhances versatility without requiring separate control mechanisms for each adjustment type.
3Measurement precision
If independent locking along vertical and horizontal axes is implemented, then precise adjustment is achieved, but the device complexity increases
Solution Approach 1:
The locking mechanism is designed to automatically engage and lock the headrest in position once adjustment forces are applied and the button is released. The spring-loaded locking pins and telescopic locks self-engage with the guide rails and slots, providing precise positioning without requiring additional manual locking actions or complex control systems.
Solution Approach 2:
The patent replaces complex multi-stage mechanical locking systems with simpler spring-loaded pins and telescopic mechanisms that use elastic deformation and geometric constraints for locking. This substitution reduces mechanical complexity while maintaining precise adjustment capability through the inherent mechanical properties of the components.
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
Enables easy and precise adjustment of the headrest in multiple directions, enhancing user comfort and convenience by allowing independent movement along vertical and horizontal axes with a simple and intuitive mechanism.
Implementation Method 1
a resilient element having a return force that opposes movement of the locking frame along the longitudinal axis
Data Source
AI summary
An adjustable headrest wherein the headrest independently moves along the substantially vertical axes of the mounting rods in response to a first-applied substantially vertical force applied to the headrest when the button I simultaneously actuated, and further wherein the headrest independently moves along the substantially horizontal axis of the slide rail in response to a second-applied substantially horizontal force applied to the headrest when the button is simultaneously actuated.