Cutting Tool Handle-Blade Assembly for Toolless Replacement
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Solution Overview
Problem
Conventional cutting tools require complex and time-consuming processes for replacing worn-out cutting parts, making maintenance cumbersome for common users.
Innovation Solution
A cutting tool design featuring two handles and two cutting parts pivotably connected by a biasing means, allowing toolless assembly and disassembly through a biasing mechanism that fixes the handles to the cutting parts without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional cutting tools use screws or pivot bolts to secure cutting parts to handles, then the cutting parts can be firmly fixed, but the replacement process becomes complex and time-consuming
Solution Approach 1:
The cutting tool is divided into separable components: cutting parts (blades) and handles, connected through a toolless release mechanism. The release button enables independent separation of cutting parts from handles without requiring tools, allowing users to replace only the worn cutting parts while retaining the handles.
Solution Approach 2:
The cutting tool incorporates a self-service release mechanism where the user can directly operate the release button to detach cutting parts from handles. This eliminates the need for external tools or complex disassembly procedures, enabling users to perform maintenance independently and quickly.
2Strength
If conventional cutting tools use multiple fastening components like pivot bolts and screws, then the assembly can be securely fixed, but the device complexity increases
Solution Approach 1:
The release mechanism integrates multiple functions into a single component: the release button simultaneously controls the detachment of both cutting parts from their respective handles through connected release levers. This merging of functions reduces the number of separate fastening components needed while maintaining secure assembly during use.
Solution Approach 2:
The release button serves multiple purposes: it activates release levers that detach cutting parts from handles, and it can also lock the cutting parts in position during operation. This multi-functionality reduces the need for separate locking and releasing mechanisms, simplifying the overall device structure.
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 easy and efficient assembly and disassembly of cutting tools, enhancing user-friendliness and reducing maintenance complexity while maintaining ergonomic grip and durability.
Implementation Method 1
a biasing means configured to pre-tension the first cutting blade and the second cutting blade away from each other
Implementation Method 2
the first handle is fixedly coupled with the first fastening section by the biasing means, and the second handle is fixedly coupled with the second fastening section by the biasing means
Data Source
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AI summary
A cutting tool (100) comprises a first handle (102), a second handle (108), a first cutting part (112) comprising a first cutting blade (114) and a first fastening section (116) extending away from the first cutting blade (114), a second cutting part (120) comprising a second cutting blade (122) and a second fastening section (124) extending away from the second cutting blade (122), and a biasing means (130) configured to pre-tension the first cutting blade (114) and the second cutting blade (122) away from each other. The first cutting part (112) and the second cutting part (120) are pivotably coupled to each other at a pivot point (P1). The first fastening section (116) is inserted into the first handle (102), and the second fastening section (124) is inserted into the second handle (108). The cutting tool (100) is characterized in that the first handle (102) is fixedly coupled with the first fastening section (116) by the biasing means (130), and the second handle (108) is fixedly coupled with the second fastening section (124) by the biasing means (130).