Protected Cutting Tool With Scraping Edge and Feed Channel
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Solution Overview
Problem
Existing cutting tools are not easily producible and cost-effective while offering a wide range of applications, and they often pose a risk of user injury due to exposed cutting edges.
Innovation Solution
A cutting tool design featuring a handle, a blade with a sharp cutting edge and a blunt scraping edge, where the cutting edge is inaccessible through a narrow channel, and the blade can be overmolded with plastic to form a form-fitting attachment with the handle, allowing for easy and inexpensive production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cutting edge is exposed for easy access, then cutting operation is convenient, but user safety is compromised
Solution Approach 1:
The blade is segmented into two distinct functional edges: a sharp cutting edge for cutting operations and a blunt scraping edge for scraping operations. This segmentation allows each edge to be optimized for its specific function while the cutting edge remains protected within the channel structure, reducing injury risk while maintaining operational effectiveness.
Solution Approach 2:
A channel structure acts as an intermediary between the user and the sharp cutting edge. The channel limits access to the cutting edge, allowing material to be fed to it while preventing direct contact with the user's fingers. This intermediary structure resolves the contradiction by enabling cutting operations while protecting the user.
2Ease of manufacture
If multiple functions are integrated into one blade, then manufacturing cost is reduced, but blade design complexity increases
Solution Approach 1:
Two functional edges (cutting edge and scraping edge) are merged into a single blade component. This allows the blade to perform both cutting and scraping operations, eliminating the need for separate tools and reducing manufacturing costs while maintaining functional versatility.
Solution Approach 2:
The blade is designed as a universal component that can perform multiple functions: cutting with the sharp cutting edge and scraping with the blunt scraping edge. This multi-functionality reduces the number of separate tools needed and simplifies manufacturing while providing versatile operational capabilities.
3Object-affected harmful factors
If the channel is made narrow to protect the cutting edge, then user safety is improved, but material feeding becomes difficult
Solution Approach 1:
The channel structure provides different qualities at different locations: it is narrow at the cutting edge end to protect the user, but has sufficient width at the material feeding end to allow easy insertion and feeding of material. This local variation in dimensions resolves the contradiction between safety and ease of material feeding.
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
The tool allows for safe cutting and scraping operations without user injury, as the cutting edge is protected within a channel, and the blade's dual functionality as both cutting and scraping edge enhances versatility and cost-effectiveness.
Implementation Method 1
Plastic material flows through the openings, e.g. when the blade is overmoulded with plastic. After the plastic has cooled, a form-fitting attachment is formed in this way.
Data Source
Figure 1
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AI summary
The invention relates to a cutting tool (10) having a handle (11) and at least one first blade (15) that comprises at least one cutting edge (13a, 13b). The special feature is that the cutting tool (10) additionally comprises at least one scraping edge (14) by means of which a scraping operation can be carried out.