Sensor-Adjusted Accessory Cart for Ergonomic Height Positioning
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Solution Overview
Problem
Current mobile accessory carts in healthcare and other industries lack user-friendly ergonomic adjustments, leading to cumbersome and often incorrect positioning, which results in repetitive strain injuries due to inadequate height adjustability and lack of proper training.
Innovation Solution
An automatically adjustable mobile accessory cart with a sensor-activated work platform that adjusts to predetermined heights based on user input or detection, featuring a deployable tracking wheel for improved mobility and ergonomic positioning of the keyboard and monitor, along with wireless charging for convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment mechanisms are provided for work surface height, then height adjustability is achieved, but device complexity and ease of operation deteriorate due to cumbersome controls requiring many steps
Solution Approach 1:
The cart automatically adjusts the work surface height based on sensor detection of user approach or input of user measurements, eliminating the need for manual adjustment operations. The system serves itself by autonomously positioning components to appropriate heights without user intervention in the adjustment process.
Solution Approach 2:
Manual mechanical adjustment mechanisms are replaced with an automated control system that uses sensors to detect user characteristics and electronically controls motorized height adjustment, substituting mechanical user manipulation with automated sensing and actuation.
2Manufacturing precision
If multiple adjustment steps are required for ergonomic positioning, then precise height control is achieved, but loss of time increases due to multiple adjustment operations
Solution Approach 1:
The system pre-calculates and automatically executes the complete sequence of height adjustments in one automated operation based on user input, performing all necessary positioning actions beforehand rather than requiring multiple separate user operations. The cart prepares and executes the full adjustment sequence automatically when the user provides their height or approaches the cart.
Solution Approach 2:
Multiple separate adjustment operations for work surface, keyboard tray, and monitor height are merged into a single automated adjustment sequence that executes all positioning tasks simultaneously or in coordinated succession based on user characteristics.
3Adaptability or versatility
If users manually adjust the cart components, then adaptability to user needs is improved, but reliability deteriorates due to lack of proper training leading to incorrect ergonomic positioning
Solution Approach 1:
The system uses sensors to detect user characteristics such as height and automatically adjusts components accordingly, providing feedback-based automated control that eliminates reliance on user knowledge of ergonomic principles. The cart senses user attributes and autonomously determines the correct positioning without requiring user training or understanding of ergonomic guidelines.
4Ease of operation
If deployable tracking wheel is added to improve mobility, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The tracking wheel transitions from a static retracted state to a deployed operational state, providing mobility only when needed. This dynamic configuration allows the cart to change its wheel engagement with the ground, offering improved maneuverability during movement while maintaining a stable, compact configuration during stationary use, thereby adding functionality without permanently increasing structural complexity.
Data Source
AI summary
In the specification and drawings an accessory cart is described and shown with a base, a housing element that is connected to the base and extends upward from the base, and a platform, which is connected to the housing element with the height of the platform being automatically adjustable.