Multi-Function Pliers Locking and Cutting Insert Architecture
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Solution Overview
Problem
Traditional multi-function tools require frequent replacement of wire cutter inserts and often have freely-pivoting locks that can obstruct functionality, necessitating additional components and potential interference with tool operation.
Innovation Solution
A multi-function tool design featuring pivotally connected handles with interchangeable cutting inserts and a locking mechanism that includes a biasing member and lock button, allowing for secure closure without the need for separate replacement inserts and minimizing lock interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wire cutter inserts are used, then cutting function is provided, but frequent replacement is needed when damaged or dulled
Solution Approach 1:
The cutting insert is divided into two separate inserts (first cutting insert and second cutting insert) that can be independently used. Each insert has its own cutting edge and anvil surface, allowing one insert to be used while the other serves as a backup or is being used alternately, thereby reducing the frequency of replacement and extending the effective cutting lifespan.
Solution Approach 2:
The patent implements a system where cutting inserts can be discarded when damaged or dulled and recovered by switching to the alternative insert. The tool body is designed with features to accommodate and switch between multiple inserts, enabling recovery of cutting functionality without complete tool replacement or lengthy repair processes.
2Reliability
If freely-pivoting locks are used, then locking function is provided, but they can obstruct functionality when not desired
Solution Approach 1:
The locking mechanism is designed to be dynamic rather than static, allowing it to pivot freely and engage into the lock position only when needed. The lock can move between locked and unlocked states smoothly, enabling the user to activate or deactivate the locking function as required by the operational context, thus avoiding obstruction when not desired.
3Reliability
If multiple replacement inserts are carried, then cutting functionality is maintained, but tool complexity and portability are reduced
Solution Approach 1:
Multiple cutting inserts are merged into a single integrated tool body structure. The first and second cutting inserts are both accommodated within the same tool, sharing common structural elements such as the handle, pivot point, and mounting mechanisms. This consolidation reduces the need to carry separate replacement inserts while maintaining cutting functionality availability.
Solution Approach 2:
The tool body is designed with universal features that can accommodate and support multiple types of cutting inserts. The structural design allows the same tool body to function with either the first cutting insert or the second cutting insert, providing multi-functionality and reducing the need for specialized replacement tools or components.
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 enables efficient cutting operations without needing separate replacement inserts and ensures secure closure of the tool, preventing accidental opening and enhancing usability by integrating a locking mechanism that automatically biases towards the unlocked position.
Implementation Method 1
a biasing member configured to bias the lock button toward the unlocked position
Data Source
AI summary
A multi-function tool includes a first handle, a second handle, a first cutting insert, and a second cutting insert. The first handle is pivotally coupled to the second handle at a pivoting axis. The first handle and the second handle move between an open position and a closed position relative to each other. A first insert surface is formed on the first handle, and a second insert surface is formed on the second handle. The first cutting insert includes a front side, a rear side configured to interface with the first insert surface, a left side including a flat anvil surface, and a right side including a cutting edge. A second cutting insert includes a front side, a rear side configured to interface with the second insert surface, a left side including a flat anvil surface, and a right side including a cutting edge.