Knife Block Sharpener Guard for Safe Integrated Sharpening

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Solution Overview

Problem

Existing knife storage solutions lack integrated safety features and convenient sharpening options, particularly in preventing accidental hand injuries during knife sharpening.

Innovation Solution

A combination of a knife storage block and a knife sharpener with a guard mechanism and a removable sharpening unit, featuring ceramic wheels and a pivotable flap or fixed guard to protect the user's hand, and an elongate portion with retention formations for secure and tool-free attachment to the storage block.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a knife sharpener is integrated into a knife storage block, then sharpening convenience is improved, but safety risk increases due to lack of hand protection

Engineering Contradiction:

Improvesharpening convenienceVSAvoidhand injury risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

A guard member is introduced as an intermediary component between the user's hand and the sharpening unit. This guard extends forwardly from the knife storage block to physically protect the hand during the sharpening operation, allowing the convenient integrated design to be maintained while mitigating the safety risk.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a guard is added to protect the user's hand, then safety is improved, but device complexity increases

Engineering Contradiction:

Improvehand injury protectionVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The guard member is designed to perform multiple functions: it protects the user's hand during sharpening operations and also serves as part of the structural framework of the knife storage block. This multi-functionality approach allows safety to be improved without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The guard member is integrated into the knife storage block structure itself, merging the safety function with the existing structural components. This combination approach avoids adding separate, complex safety mechanisms while still providing effective hand protection.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If the knife sharpener is made removable without tools, then ease of installation is improved, but retention reliability may worsen

Engineering Contradiction:

Improveinstallation convenienceVSAvoidretention security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The knife sharpener is divided into separate components with retention formations that can be easily assembled and disassembled. The retention formations are designed to provide secure holding through simple mechanical interlocking features, allowing tool-free removal while maintaining adequate retention reliability during use.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS7637803B2Combination of knife block and knife sharpener with guard

Publication Date: 2009.12.29 ROBERT WELCH DESIGNS

AI summary

The combination of a knife storage block and a knife sharpener including a sharpening unit. The combination has a guard extending forwardly from either the knife storage block or the sharpener which in use protects a user's hand while drawing a knife through the sharpening unit. The knife sharpener may be external to the knife block or integral to it.