Removable multi-rasp assembly

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Solution Overview

Problem

Existing multi-grater assemblies face difficulties in easy cleaning and safety due to inaccessible interior spaces and small gripping handles, which can lead to user injury during handling.

Innovation Solution

A multi-grater assembly with removable graters and a large gripping part that covers the unused grater, featuring a frustoconical shape with a C-shaped cross section and locking mechanism, allowing secure grip and easy assembly/disassembly without tools, along with a non-slip foot for stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a multi-grater set forms a vertical container with a small handle, then the container structure is compact, but the handle provides insufficient grip support and exposes sharp graters to user injury

Engineering Contradiction:
Improvegrip supportVSAvoiduser injury risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The handle is designed to receive and nest the first and second graters when not in use, concealing the sharp edges within the handle's internal cavity. This nesting arrangement provides both a large gripping surface for safe handling and protects users from exposed sharp graters.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Productivity

If the multi-grater set forms a closed vertical container, then food preparation is efficient, but cleaning access to the interior is difficult

Engineering Contradiction:
Improvefood preparation efficiencyVSAvoidcleaning accessibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The grater assembly is divided into separable components - the first and second graters can be detached from the handle. This segmentation allows users to easily remove and clean each component individually, solving the cleaning accessibility problem while maintaining the container's food preparation efficiency when assembled.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If the graters are fixed in the container, then the structure is stable, but disassembly for cleaning requires tools and is complex

Engineering Contradiction:
Improvestructural stabilityVSAvoiddisassembly complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The connection between the graters and handle employs a dynamic locking mechanism with movable locks that can be easily engaged and disengaged. The locks feature buttons or actuators that allow tool-free operation, enabling users to quickly assemble and disassemble the graters for cleaning while maintaining stable attachment during use.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3031369B1Removable multi-rasp assembly
Publication Date: 2019.11.13 SEB SA
  • EP3031369B1 patent drawingFigure 1~2
  • EP3031369B1 patent drawingFigure 3

AI summary

Multi-grater assembly (1) comprising at least first and second rasps (2, 3) arranged opposite each other and a gripping part (8). According to the invention, the first and second graters (2, 3) are arranged in a removable manner to assume an assembled working position or a separate position, in particular for cleaning, and in that the gripping part (8) is arranged removably opposite the first (2) or the second grater (3) to cover the first (2) or the second grater (3) in the assembled position.