Coffee Grinder Single-Point Coupling to Reduce Particle Size Error
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing coffee grinder-doser devices face issues with irregular particle size of coffee powder due to potential errors in the coupling phase during assembly and maintenance, leading to inconsistent taste and residue problems.
Innovation Solution
A coffee grinder-doser device design featuring a single parallel coupling point between the upper and lower grinders, facilitated by a horizontal annular seat and a toothed annular portion, allows for easy removal and coupling, ensuring consistent grinding and reducing errors in particle size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple screws are used to fasten the upper grinder holder to the head and to tie the upper grinder to the lower grinder, then the assembly is secure, but the coupling phase introduces double possibilities of error leading to irregular particle size
Solution Approach 1:
The invention divides the coupling function into two distinct stages: first, the upper grinder holder is fastened to the head with screws to provide stable support; second, the upper grinder is coupled to the lower grinder through a single centralized coupling point. This segmentation eliminates the double coupling errors that occurred when both connections were made simultaneously with multiple screws.
Solution Approach 2:
The invention introduces a horizontal annular seat as an intermediary element between the upper and lower grinders. This seat provides a precise reference surface and a single parallel coupling point that ensures accurate alignment during the coupling phase, thereby guaranteeing regular particle size without compromising assembly security.
2Ease of repair
If the upper grinder holder is fastened with screws and tied with additional screws, then the grinding chamber can be cleaned, but the double coupling phase increases error possibilities and affects grinding consistency
Solution Approach 1:
The invention segments the fastening system into two functional parts: the screw-fastened upper grinder holder that enables cleaning access, and the single-point coupled upper grinder that ensures grinding consistency. This allows maintenance operations while preserving precision during the coupling phase.
Solution Approach 2:
The horizontal annular seat acts as a mediator that provides a stable reference surface for the single parallel coupling point, ensuring that the upper grinder maintains correct alignment with the lower grinder even when the holder is removed for cleaning purposes.
3Manufacturing precision
If perfect execution of components and assembly is required to guarantee parallelism, then grinding precision is achieved, but assembly complexity and error possibilities increase
Solution Approach 1:
The horizontal annular seat serves as a precision intermediary that provides a ready-made reference surface and single coupling point. This eliminates the need for complex multi-screw alignment procedures, reducing assembly complexity while maintaining grinder parallelism through the inherent precision of the annular seat design.
Data Source
AI summary
Grinder-doser device for coffee beans includes a body which internally houses an electric motor, having a shaft, which is integral in rotation with the lower grinder holder to which the lower grinder is joined, said lower grinder holder, and said lower grinder being housed inside a head which has a horizontal annular seat in the lateral edge, which houses an upper grinder. The upper grinder being formed by a toothed annular portion housed inside a hollow annular portion, which in turn is surrounded by an annular portion, which rests on the annular seat. The flat upper surface of the upper grinder is rectified and collimated with the plane passing through the ends of the teeth of the toothed portion.