Wireless Motorized Wheelchair Headrest for Independent Positioning
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Solution Overview
Problem
Existing wheelchair headrests lack motorized adjustability and universal mounting capabilities, making it difficult for individuals with limited arm and upper torso mobility to control the position of their headrest, leading to discomfort and skin pressure issues.
Innovation Solution
A wireless adjustable wheelchair headrest system that combines motorized and manual adjustability, featuring linear translation and rotational assemblies with servo motors, a universally attachable mounting plate, and wireless control via a mobile device application, allowing for precise customization of headrest position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment mechanisms are used, then the device complexity is reduced, but the ease of operation deteriorates for users with limited arm and upper torso mobility
Solution Approach 1:
The patent replaces manual mechanical adjustment mechanisms with an electric motorized system controlled by a wireless remote or mobile device application. The motorized assembly electronically adjusts the headrest position along the vertical axis and rotates it about horizontal and vertical axes, eliminating the need for manual operation while providing precise control for users with limited mobility.
Solution Approach 2:
The patent introduces a wireless communication intermediary (remote control or mobile device) between the user and the headrest adjustment system. This intermediary transmits control signals wirelessly to the motorized assembly, allowing users to operate the complex adjustment mechanisms without direct physical contact, thus maintaining ease of operation while enabling sophisticated control capabilities.
2Ease of operation
If motorized adjustment systems are added, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The patent employs a universal mounting plate with multiple mounting holes that can accommodate various wheelchair configurations. This universal interface allows the motorized headrest system to be adapted to different wheelchair types without requiring custom integration for each model, thereby managing complexity through standardization while maintaining versatile functionality.
3Adaptability or versatility
If headrest rotation about vertical axis is added, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The patent combines multiple adjustment functions (vertical translation, rotation about horizontal axis, and rotation about vertical axis) into a single integrated motorized assembly. All three degrees of freedom are controlled by a unified electronic control system with coordinated motors, reducing overall system complexity compared to separate manual adjustment mechanisms for each function.
Data Source
AI summary
An adjustable wheelchair headrest system to provide wheelchair users with the ability to control their headrest without assistance form another individual. Some wheelchair users are unable to adjust their headrests without assistance, and as a result, have no control over their head and neck positioning throughout the day. The system provides wheelchair users with a multi-directional adjustable headrest that may be controlled through a mobile device. The system includes a universal mounting system and manually adjustable starting positions for each linear translation and rotational assembly, which allows the system to easily mount to any existing wheelchair. The system enables users to adjust their headrest to suit any situation (driving, watching a movie, eating, etc.). Wheelchair reliant individuals can now enjoy day-to-day comfort, control their own upper body posture, and perform additional tasks without assistance.