Folding Knife Replaceable Blade Locking Mechanism
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Solution Overview
Problem
Existing folding knives have permanently affixed blades or require specialized tools for replacement, making it difficult to change dull blades or use different blade configurations, and often lack portability and single-handed actuation.
Innovation Solution
A folding knife design that allows for rapid blade replacement using standardized blades without specialized tools, featuring a compact and portable form with single-handed rotational actuation from a fully closed to fully open configuration, utilizing a detent mechanism and spring bias for secure locking and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blade is permanently affixed to the folding knife assembly, then the structural integrity and reliability are improved, but the adaptability and ease of blade replacement deteriorate
Solution Approach 1:
The knife assembly is segmented into separable components: the handle assembly and the blade are designed as distinct modules that can be easily detached and reattached. The blade features a tapered tail that fits into a corresponding recess in the handle, allowing simple insertion and removal without specialized tools while maintaining structural integrity during use.
Solution Approach 2:
The blade attachment system transitions from a static permanent fixation to a dynamic interchangeable system. The blade can be securely fixed during cutting operations but can also be quickly removed and replaced when needed, providing both reliability during use and adaptability for blade replacement.
2Reliability
If the blade requires specialized tools for removal, then the reliability and security of blade attachment are improved, but the ease of operation and ease of blade replacement deteriorate
Solution Approach 1:
The blade replacement system is designed to be self-service, allowing users to remove and replace blades without specialized tools. The tapered blade tail fits into a recess in the handle assembly that can be easily manipulated by hand, enabling users to perform blade replacement themselves without requiring technical expertise or specialized removal tools.
3Volume of moving object
If the folding knife is designed for compact portability, then the ease of carrying and discretion are improved, but the ease of single-handed actuation may deteriorate
Solution Approach 1:
The handle assembly incorporates curved and ergonomic surfaces that facilitate single-handed gripping and manipulation. The pivot mechanism and blade deployment geometry are designed with curved pathways that allow easy actuation even in the compact folded state, enabling users to open and close the knife with one hand despite its portable size.
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
Enables cost-effective and convenient blade replacement without sharpening skills, providing a versatile tool for various tasks with a compact, portable, and safe single-handed operation, suitable for arts, crafts, and first-aid applications.
Implementation Method 1
utilizing a detent mechanism and spring bias for secure locking and easy operation
Implementation Method 2
spring bias for secure locking
Implementation Method 3
utilizing a detent mechanism and spring bias for secure locking
Data Source
AI summary
A replaceable-blade folding knife configured for ease of use and ease of transportation in a pocket, bag, purse or otherwise. Embodiments of the present invention allow a user to alternatively open and close the folding knife of the present invention using a single hand. Embodiments of the present invention allow a user to replace a blade with commonly available blades without the need for specialized tools.