Food Slicer Sharpener Assembly With Limited Knife Edge Exposure
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Solution Overview
Problem
Existing food slicers lack an effective knife sharpener that minimizes exposure of the knife edge during sharpening, which is necessary for maintaining long-life and proper slicer performance.
Innovation Solution
A food product slicer with a knife guard that extends about portions of the peripheral cutting edge, featuring a radially inward edge with a channel and slot recess, allowing a sharpening component to move into a sharpening position while limiting exposure of the knife edge, and a fixed knife guard rail that does not require movement during sharpening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a pivoting guard member is used to allow sharpening stones to contact the knife edge, then the knife can be sharpened, but the knife edge exposure is increased and safety is reduced
Solution Approach 1:
The knife guard is segmented into a stationary outer guard body and a movable inner sharpening component. The guard body remains fixed to limit knife exposure, while the sharpening component can move independently to contact the knife edge only when needed for sharpening.
Solution Approach 2:
A channel structure serves as an intermediary element that guides the sharpening component's movement while being constrained by the stationary guard body. This channel allows controlled access to the knife edge without requiring the entire guard to move, thus limiting exposure.
2Ease of operation
If a movable guard member is used for sharpening, then sharpening access is provided, but the device complexity increases
Solution Approach 1:
The sharpening component is merged with the guard structure itself rather than being a separate movable guard. The sharpening stones are integrated into the guard assembly, eliminating the need for a separate pivoting guard mechanism and reducing overall device complexity.
Solution Approach 2:
Instead of making the entire guard movable to allow sharpening, the invention inverts the approach by making the sharpening component movable within a stationary guard. This reverses the traditional design paradigm and simplifies the mechanism.
3Object-affected harmful factors
If the knife guard is made stationary with fixed channels, then safety and ease of cleaning are improved, but sharpening access must be carefully designed
Solution Approach 1:
The stationary guard body has different local qualities: the outer surface provides safety by limiting exposure, while the internal channel provides controlled access for sharpening. This local differentiation allows the same structure to serve both safety and operational requirements.
Solution Approach 2:
The channel structure in the stationary guard serves dual purposes: it guides the sharpening component during sharpening operations and automatically limits the extent of knife exposure. The geometry of the channel itself provides the constraint mechanism without requiring additional active control.
Data Source
AI summary
A food product slicer includes a base, a knife mounted for rotation about an axis relative to the base, the knife including a peripheral cutting edge, and a carriage assembly mounted to the base for reciprocal movement back and forth past the peripheral cutting edge of the knife. A knife sharpener includes a first sharpening component movable between a first non-sharpening position spaced from the peripheral cutting edge and a first sharpening position engaged with the peripheral cutting edge. A knife guard extends about portions of the peripheral cutting edge and includes a radially inner edge facing toward and running along the peripheral cutting edge, wherein the radially inner edge includes a radially outwardly extending channel along which the first sharpening component moves to reach the first sharpening position.