Handheld Cutting Device With Repositionable Multi-Edge Element
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Solution Overview
Problem
Existing cutting devices lack the ability to efficiently and safely provide multiple fresh cutting edges without requiring tool-assisted blade replacement or complex adjustments, and often have inefficient designs with moving parts.
Innovation Solution
A handheld cutting device with a non-rotatable cutting element attached to a cutting head, featuring a locking mechanism that allows for repositioning of the cutting edge to multiple positions without disassembly, using a locking device and repositioning arrangement with visual markings for easy edge renewal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cutting element is made replaceable without tools and reversible, then ease of operation is improved, but the number of fresh cutting edges is limited to two positions
Solution Approach 1:
The cutting element is segmented into multiple usable positions (at least three, preferably at least five) around its periphery, allowing the user to rotate and reposition the cutting element to expose different fresh cutting edges without removing or disassembling it from the holder.
Solution Approach 2:
The cutting element transitions from a single-edge linear design to a circular or disc-shaped element with cutting edges distributed around its periphery, adding rotational dimensionality that enables multiple fresh edges to be accessed by rotation rather than replacement.
2Ease of operation
If the cutting element is made free rotating, then ease of repositioning is improved, but device complexity increases due to moving parts
Solution Approach 1:
The cutting element is designed to rotate freely within the holder without requiring complex locking mechanisms or adjustment devices, utilizing simple friction-based retention that allows easy rotation to different positions while maintaining stability during cutting operations.
3Ease of manufacture
If the cutting element design is simplified, then manufacturing cost is reduced, but the ability to provide multiple fresh edges without disassembly is lost
Solution Approach 1:
A single circular cutting element serves multiple functions: it provides at least three, preferably at least five different fresh cutting edges by rotation, eliminating the need for multiple separate blades or complex replacement mechanisms, thereby reducing overall manufacturing cost while enhancing versatility.
Data Source
AI summary
A hand-held cutting device having a main body (6) including a handle (62) and a cutting head (63). The cutting device having a cutting element (4) attached to the cutting head (63), a guiding and supporting element (2) extending from the cutting head (63). The guiding and supporting element (2) and cutting head (63) being arranged to form a protecting periphery such that any part of a cutting edge (4A) of the cutting element (4) does not protrude outside of the periphery. The guiding and supporting element (2) including a distal portion (20) arranged to form a feed channel (64) together with a portion (60) of the handle (62), and the cutting element (4) is arranged to be releasably, none rotatably, attached to the cutting head (63), by means of a locking device (42, 43) that provides for re-positioning and renewing of an active part of the cutting edge (4A).