Filter holder and coffee grinder-doser with said filter holder

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing RFID-based filter holders for coffee grinders are prone to damage or data communication failure due to incorrect cleaning or vigorous handling, leading to ineffective identification and grinding adjustments.

Innovation Solution

The RFID tag is housed within the handle of the filter holder, protected from damage and vibration, ensuring stable data communication with the RFID reader.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the RFID plate is positioned on the handle of the filter holder, then the RFID plate is protected from damage during coffee ground removal, but the tightening torque may decrease due to vibrations from impacts, causing accidental movement of the plate and altering detection effectiveness

Engineering Contradiction:

ImproveRFID plate protectionVSAvoiddetection effectiveness

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The RFID tag is nested inside the handle structure, specifically within a cavity or compartment of the handle. This nested arrangement protects the RFID tag from external impacts and vibrations while maintaining stable positioning, eliminating the loosening problem associated with external mounting

Inventive Principle:

Principle #7Nested doll (Nesting)

2Measurement precision

If the RFID plate is positioned on the cup of the filter holder, then the identification can be performed, but the plate is subject to beating during removal of used coffee ground and may interfere with the dispensing unit during coupling

Engineering Contradiction:

Improveidentification accuracyVSAvoiddamage from beating

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The RFID tag is extracted from the vulnerable cup area and relocated to the handle structure. This extraction removes the RFID tag from the zone of harmful impacts during coffee ground removal, while the handle provides a stable, protected location that does not interfere with dispensing unit coupling

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If the operator manually removes and grips the filter holder vigorously for cleaning, then cleaning speed is improved, but the ring supporting the RFID plate may be damaged or the ring may slide along the handle, decreasing RFID plate readability

Engineering Contradiction:

Improvecleaning speedVSAvoidRFID plate readability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The RFID tag is nested within the handle structure, protected from the vigorous handling during manual cleaning operations. The nested position ensures the RFID tag cannot be damaged or displaced by gripping forces, maintaining reliable readability even during aggressive cleaning

Inventive Principle:

Principle #7Nested doll (Nesting)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures reliable identification and automatic grinding adjustments by preventing RFID tag damage and maintaining effective data communication, even under harsh handling conditions.

Implementation Method 1

an RFID tag (15) housed inside the handle (12) and configured to generate an identification signal (S_id) following receipt of an activation signal (S_r) from an RFID reader (6)

Methodology Applied

Scientific EffectRFID (Radio Frequency Identification): Electromagnetic Induction

Data Source

PatentEP4218507B1Filter holder and coffee grinder-doser with said filter holder

Publication Date: 2026.01.21 CIMBALI GRP SPA

Figure 1
Figure 2
Figure 3

AI summary

A filter holder (10) comprises a cup-shaped body (11), a filter (13) inserted in the cup-shaped body (11) and configured to contain ground coffee, a handle (12) attached to the cup-shaped body (11), an RFID tag (15) associated with the handle (12), the RFID tag being configured to generate an identification signal following receipt of an activation signal from an RFID reader. The RFID tag is housed inside the handle (12).