Kitchen Appliance Spiral Cutter with Sensor-Based Locking Detection

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Solution Overview

Problem

Existing kitchen appliances lack a reliable mechanism to ensure that a lid or a vegetable cutting tool is properly locked before operation, which can lead to operational faults and potential damage to food during processing.

Innovation Solution

A kitchen appliance with a locking device that secures a lid or a multi-part vegetable cutting tool, featuring a sensor that triggers only when the tool is fully locked, preventing operation if any part is missing or improperly attached.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking device is used to secure the lid or tool, then the reliability of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveoperational reliabilityVSAvoidlocking mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs a sensor that detects whether the lid or tool is properly locked and provides feedback to the control unit. This feedback mechanism ensures that the appliance only operates when the locking condition is satisfied, thereby improving reliability without requiring complex mechanical interlocking systems. The sensor-based approach simplifies the locking mechanism while maintaining operational safety.

Inventive Principle:
Principle #23Feedback

2Reliability

If a sensor is added to detect proper locking, then the reliability is improved, but the device complexity increases

Engineering Contradiction:
Improvedetection reliabilityVSAvoidsensor system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sensor system is designed to automatically detect the locking state of the lid or tool and communicate this information to the control unit without requiring additional manual intervention or complex processing. The sensor leverages the existing locking mechanism's physical state (locked vs. unlocked) to trigger the appropriate operational response, thereby improving detection reliability while minimizing added complexity.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If the tool is designed as multiple parts, then the adaptability is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improvetool configuration flexibilityVSAvoidassembly simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent ensures that before the appliance can operate, all parts of the tool must be properly assembled and locked into place. The sensor detects this preliminary assembly state and only permits operation when the tool is complete and secure. This approach maintains adaptability through modular design while ensuring ease of operation by providing clear feedback on assembly status and preventing operation until properly configured.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4588409A1Kitchen appliance with spiral cutter
Publication Date: 2025.07.23 VORWERK & CO INTERHOLDING GMBH
  • EP4588409A1 patent drawingFigure 1
  • EP4588409A1 patent drawingFigure 2
  • EP4588409A1 patent drawingFigure 3

AI summary

The invention relates to a kitchen appliance (30) with a preparation vessel (31), a lid (32) that can be placed on the preparation vessel (31), a tool that can be placed on the preparation vessel (31) instead of the lid (32), wherein the tool comprises a first part and a second part, a locking device for locking the lid (32) placed on the preparation vessel (31) and for locking the tool placed on the preparation vessel (31), a sensor (34) that is triggered when the attached lid (32) is locked by the locking device or by the attached tool, wherein the sensor (34) is not triggered when only part of the tool is placed and locked on the preparation vessel (31). The tool comprises a spiral cutter. The invention also relates to a vegetable cutter with the spiral cutter. Zoodles can be produced using the invention.