Coffee Grinder Mechanical User Input for Simplified Dose Selection
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Solution Overview
Problem
Current automatic coffee machines require complex user interfaces and designs to adjust the coffee-to-water ratio, increasing manufacturing costs and retail prices, while users face difficulties in intuitively selecting the desired amount of coffee to grind.
Innovation Solution
A mechanical user input device with a plurality of positions, an electrical switch, and a mechanical coupling that connects the user input device to the grinding unit, allowing users to select coffee amounts and grind sizes through a simple and intuitive mechanism, where the user input device returns to its initial position upon grinding unit operation, determining the amount of coffee ground by displacement and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex user interface and control system are used to allow users to select brewing settings and adjust coffee-to-water ratio, then user preference customization is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The system performs self-service by automatically determining the brewing parameters based on the selected coffee beverage type. The controller automatically sets the coffee-to-water ratio, grinding amount, and brewing parameters without requiring manual user input for each parameter, thus achieving customization while maintaining simple operation.
Solution Approach 2:
The user interface is designed to be universal by allowing selection of different coffee beverage types (espresso, cappuccino, latte, etc.), where each type automatically triggers a predefined set of brewing parameters. This multi-functional approach covers various user preferences through a unified selection mechanism rather than requiring separate controls for each parameter.
2Manufacturing precision
If a control system is added to grind coffee based on selected brewing settings, then coffee grinding precision is improved, but manufacturing cost increases
Solution Approach 1:
The system performs preliminary action by pre-configuring the relationship between coffee beverage types and grinding parameters. The controller is programmed with predefined grinding amounts for each beverage type, allowing precise grinding control without requiring complex real-time calculations or additional hardware during operation.
Solution Approach 2:
The patent replaces complex mechanical grinding control systems with an electronically controlled system. The controller electronically manages the grinding unit based on the selected beverage type, substituting mechanical complexity with electronic control that achieves precise grinding amounts through software-based parameter management.
3Ease of operation
If manual selection of coffee amount is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The system inverts the traditional approach by not asking users to manually specify grinding amount or brewing parameters. Instead, the user simply selects the desired coffee beverage type, and the system automatically determines all other parameters including coffee amount, grinding settings, and brewing parameters, thus achieving ease of operation with minimal input.
Solution Approach 2:
The system implements feedback by automatically adjusting brewing parameters based on the selected coffee beverage type. The controller receives the user's beverage selection as input and automatically configures the corresponding grinding amount, water volume, and brewing parameters, creating a closed-loop system that adapts to user preferences without requiring manual parameter adjustment.
Data Source
AI summary
An apparatus for grinding coffee is described. The apparatus includes a mechanical user input device, a grinding unit for grinding coffee, an electrical switch which connects the grinding unit to a source of electrical power and a mechanical coupling for the mechanical coupling of the user input device to the grinding unit. The user input device provides electrical power to the grinding unit when it is displaced from an initial position and ceases the provision of electrical power to the grinding unit when it is in the initial position. The mechanical coupling returns the user input device to the initial position when the grinding unit is operational.