Peeling Blade with Rounded Apexes for Fruit Skin Engagement
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Solution Overview
Problem
Conventional fruit and vegetable peeling devices face issues with peeling blade quality and suitability, leading to unpeeled skin, blade slippage, and chipping, especially when handling various sizes and shapes, and during oblique peeling.
Innovation Solution
A peeling blade with a plate-shaped main body featuring a wavy blade portion, rounded apexes, and engaging portions, designed to reduce friction and prevent chipping, allowing for effective peeling of various fruits and vegetables, including oblique peeling without blade damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional peeling blade is used, then the peeling process can be performed, but the blade slips without catching onto the skin and causes unpeeled skin to remain
Solution Approach 1:
The blade end portion is cut into a circular-arc shape that arcs from the opening portion into the blade-portion area. This curved geometry allows the blade to better conform to the surface of fruits and vegetables, improving skin engagement and preventing slippage during peeling operations.
Solution Approach 2:
Different portions of the blade have different geometric properties optimized for specific functions: the blade end portion has a circular-arc shape for initial engagement, while the blade striation portions have rounded apexes for cutting. This localized optimization improves overall peeling reliability.
2Reliability
If a sharp peeling blade is used, then peeling performance is improved, but the blade chips easily during work
Solution Approach 1:
The rounded circular-arc shape of the blade end portion and the rounded apexes of the blade striation portions distribute stress more evenly during cutting operations, preventing stress concentration that leads to chipping while maintaining effective cutting performance.
Solution Approach 2:
The blade geometry parameters are optimized within specific ranges: pitch between blades of 1-3mm, and rounded radii of 0.5-2mm for blade striation portions. These parameter optimizations balance cutting effectiveness with resistance to chipping.
3Productivity
If multiple blades are arrayed closely together, then peeling coverage is improved, but frictional resistance to flesh increases
Solution Approach 1:
The blade striation portions have rounded apexes with specific radius (0.5-2mm) that reduces frictional resistance to the flesh, while maintaining adequate pitch between blades (1-3mm) for effective peeling coverage. This localized geometric optimization balances coverage and energy loss.
Data Source
AI summary
In an exemplary embodiment, a blade portion 41 is formed by a plurality of blades 42 being arrayed on a front surface of a main body at an even interval while forming blade striation portions 43 between adjacent blades 42. Each blade 42 is cut into a circular-arc shape. A pitch between the blades 42 is in a range of 1 to 3 mm. A recess-portion apex composed of a cut surface of each blade 42 has a rounded shape with a radius of 1.0 to 3.0 mm. A protrusion-portion apex of the blade striation portion 43 has a rounded shape with a radius of 0.1 to 0.5 mm. A tip of the blade 42 formed by the blade striation portion 43 has a rounded shape with a radius of 0.1 to 0.5 mm.