Food Preparation Tool with External Locking Mechanism for Safe Removal

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Solution Overview

Problem

Existing food preparation devices face challenges in safely removing mixing tools without obstructing the meal or causing user injury, and often require disassembly for cleaning, which complicates the process.

Innovation Solution

A food preparation device with a rotatable tool that can be detachably connected to a shaft extending from outside the vessel, featuring a locking mechanism that allows the tool to be locked and unlocked from outside, enabling safe removal and easy cleaning without disassembling the device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the mixing tool is integrated into the food preparation device, then the tool can be used for mixing and chopping, but the tool obstructs meal removal and poses safety risks to the user

Engineering Contradiction:
Improvemeal removalVSAvoiduser injury risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The locking mechanism transitions from a static fixed state to a dynamic releasable state. The tool is initially locked to the shaft for operation, then can be released by actuating the locking mechanism from outside the vessel, allowing safe removal without direct contact with the tool or food.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The tool is extracted from the fixed integrated state and made detachable. After use, the tool can be removed from the shaft by actuating the locking mechanism, separating the tool from the food preparation vessel to enable safe meal removal and cleaning.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If the blending blade assembly is removed from the grommet, then the tool can be detached, but the pot leaks

Engineering Contradiction:
Improvetool detachmentVSAvoidsealing
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The locking mechanism acts as an intermediary between the tool and shaft. It provides a controlled detachment method that maintains sealing during operation through the sealed passage, and enables clean separation after use without causing leaks.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The detachment function is segmented into controlled steps: the locking mechanism remains engaged during operation to maintain sealing, and can be actuated from outside the vessel to release the tool when needed, separating the sealing function from the detachment function.

Inventive Principle:
Principle #1Segmentation

3Productivity

If the tool is fixed to the shaft, then the tool can be driven for mixing, but the tool cannot be easily removed for cleaning

Engineering Contradiction:
Improvemixing operationVSAvoidcleaning accessibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The connection between tool and shaft is dynamic rather than static. The locking mechanism allows the tool to be firmly fixed during mixing operations for effective driving, then can be released from outside the vessel to enable easy removal and cleaning without disassembly.

Inventive Principle:
Principle #15Dynamics

4Ease of operation

If a locking mechanism is added to enable tool release, then the tool can be safely removed, but the device complexity increases

Engineering Contradiction:
Improvetool removal safetyVSAvoidlocking mechanism structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The locking mechanism serves as an intermediary component that mediates between the tool and shaft. It provides the necessary locking and release functionality through a relatively simple structure that can be actuated from outside the vessel without requiring complex disassembly procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3569116B1Food preparation device with releasable tool
Publication Date: 2020.11.04 VORWERK & CO INTERHOLDING GMBH
  • EP3569116B1 patent drawingFigure 1
  • EP3569116B1 patent drawingFigure 2~4
  • EP3569116B1 patent drawingFigure 5

AI summary

The invention relates to a food preparation device with a rotatable tool 1 for chopping and/or mixing food in a food preparation vessel 2, wherein the tool 1 can be detachably connected to a shaft 3 which extends from outside the food preparation vessel 2 through a passage 4 towards the tool 1 inside the food preparation vessel 2 in order to drive the tool 1 to rotate. A locking mechanism for a locked connection of the tool 1 to the shaft 3 is provided and configured such that the connection of the tool 1 to the shaft 3 can be released and/or locked from outside the food preparation vessel 2. The invention further relates to an anchoring assembly 10 for the food preparation device. This enables easy and convenient removal of a prepared food item from the food preparation vessel 2.