Package Opening Knife Guide Face Cutting Depth Control
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Solution Overview
Problem
Existing package opening knives lack improved workability, relying on user proficiency and potentially damaging contents or leaving residues, especially in sanitary environments where skill-dependent operations are undesirable.
Innovation Solution
A package open knife design featuring a fixed blade portion with a guide face for maintaining cutting depth and angle, a grip portion with engaging features for stable handling, and a connecting region to prevent finger contact, enhancing operability and sanitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional cutter knife is used without lubricant between metal parts, then smooth movability of metal parts is maintained, but workability of the blade body is not well secured (cutting depth control and cutting angle consistency are poor)
Solution Approach 1:
A guide body is introduced as an intermediary component between the blade body and the user's hand. The guide body includes a guide face that contacts the package surface to mediate and control the cutting depth and angle, ensuring consistent cutting parameters while maintaining smooth blade movement through proper mechanical design
2Productivity
If cutting operation depends on user finger forces, then user proficiency determines operation quality, but workability is not secured for all users (especially in food processing where sanitation is critical)
Solution Approach 1:
The guide body is designed to automatically maintain proper cutting depth and angle through its geometric features (guide face, inclined surface) without requiring user skill or adjustment. The structure itself performs the function of controlling cutting parameters, making the operation self-regulating and independent of user proficiency
3Ease of manufacture
If the blade portion is not fixedly secured to the main body, then assembly is simpler, but relative position may shift during use decreasing workability and potentially causing food materials to intrude
Solution Approach 1:
The blade body is fixedly secured to the main body through embedding or integration, merging the two components into a unified structure. This eliminates relative movement between components, ensures consistent cutting geometry, prevents food material intrusion, and maintains sanitation while remaining manufacturable
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 design ensures consistent and efficient cutting and opening operations without user skill dependency, reducing the risk of damage and residue, particularly in food processing environments.
Implementation Method 1
a guide face to guide the movement of the blade portion by sliding in a face extending direction of the package in a state to face-contact with the package
Data Source
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AI summary
[Problem] To provide a technology effective at further improving operability in a package opening operation. [Solution] A package opening knife 1 has a body part 3, a blade part 5, a gripping part 7 that extends in an elongated shape in a prescribed first direction HD, and a guide part 9 provided with a guide surface that slides in a surface direction of the package in a state of contacting the package to guide movement of the blade part, and is characterized in that, when a surface direction of the guide is defined as a second direction GD, the first direction HD and the second direction GD become substantially parallel to each other.