Coffee Grinder Hinge Design for Cleaning Access and Gap Stability
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Solution Overview
Problem
Existing coffee grinders face challenges in maintaining uniform particle size distribution due to variable geometry and require frequent adjustments, are difficult to clean and service, and have conflicting requirements for ease of access and structural rigidity.
Innovation Solution
A coffee grinder design with a rotating and stationary grinder element, where the gap width is manually or automatically adjustable using a manual adjustment element and/or grinder adjustment motor, and a hinge mechanism allows the grinder unit to tilt from a closed to an open position for direct access, facilitating easy servicing and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grinder unit is firmly fixed to ensure structural rigidity and prevent grinding gap changes, then reliability is improved, but ease of access for cleaning and servicing deteriorates
Solution Approach 1:
The grinder is divided into separate modules: a stationary grinder element fixed to the housing, and a rotating grinder element mounted on a removable drive unit. This segmentation allows the drive unit to be easily removed for cleaning while the stationary element remains fixed to maintain grinding gap stability.
Solution Approach 2:
The drive unit incorporating the rotating grinder element is designed to be removable and replaceable. This dynamic design allows easy access for cleaning and maintenance while ensuring that when assembled, the grinding elements maintain stable relative positioning for consistent grinding quality.
2Ease of operation
If the grinding elements are easily accessible for cleaning and maintenance, then ease of operation is improved, but structural rigidity and reliability deteriorate
Solution Approach 1:
The grinding system is segmented into a stationary element fixed to the housing and a rotating element on a removable drive unit. This allows the drive unit to be easily removed for servicing while the stationary element maintains structural integrity and positioning stability.
Solution Approach 2:
The rotating grinder element is extracted as part of a removable drive unit that can be easily taken out for cleaning and maintenance. This extraction design provides easy access to grinding elements while the stationary element remains firmly fixed to preserve structural rigidity.
3Device complexity
If manual adjustment mechanisms are used for gap width, then device complexity is reduced, but adjustment precision and consistency deteriorate
Solution Approach 1:
The system incorporates both manual adjustment capability and automatic adjustment through sensors and control systems that monitor grinding quality and automatically adjust the gap width, reducing reliance on operator skill while maintaining simple overall device structure.
Solution Approach 2:
Sensors monitor the grinding process and provide feedback to automatically adjust the gap width between grinding elements, ensuring consistent particle size distribution while maintaining relatively simple mechanical adjustment mechanisms.
Data Source
Figure 1a~1c
Figure 1d~1e
Figure 1f
AI summary
Coffee grinder (1) with motor (25) and a grinder unit with a rotating grinder element (30) and a stationary grinder element (31), the distance of which can be manually adjusted by using an adjustment element (9), characterized in that the motor and the grinder unit are located in a first portion (7) of the grinder (1) and the adjustment element (9) is mounted in a second portion (8) of the grinder, and in that the first portion (7) is fixedly mounted on a stand (4) and the second portion (8) is attached to the first portion (7) by way of hinge, said hinge allowing to tilt the second portion (8) from a closed position, in which the first portion (7) is located adjacent to the second portion (8), and where the first portion (7) and the second portion (8) are engaged in a way such that by way of the adjustment element (9) the distance of the grinder elements (30, 31) can be adjusted, to an open position, in which the second portion (8) is panned away from the first portion (7) and where direct access is given to the grinder unit.