Folding Knife Mode Lever Mechanism for Spring-Assisted Operation
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Solution Overview
Problem
Current folding knives cannot be easily switched between spring assisted and manual operation modes, limiting user flexibility in opening the blade.
Innovation Solution
A folding knife design incorporating a blade member, side plates, a spacer, a mode lever, and a linear spring, allowing the knife to be set into either manual or spring assisted mode by engaging the spring assisted or manual steps on the mode lever, with a release button and lock bar for extended position control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a folding knife is designed with spring assisted opening mechanism, then the ease of operation is improved, but the device complexity increases and the user cannot switch to manual mode
Solution Approach 1:
The knife implements a dynamic mode selection system where the user can switch between spring assisted mode and manual mode using a mode selector mechanism. This allows the operational characteristics of the knife to change based on user preference, resolving the contradiction by making the system adaptable rather than fixed in one operational mode
Solution Approach 2:
The knife is designed to perform multiple functions by incorporating both spring assisted opening capability and manual opening capability within a single device. The mode selector enables the knife to universally serve different operational needs, whether the user prefers assisted opening or wants full manual control
2Device complexity
If a folding knife is designed with manual opening mechanism, then the device complexity is reduced, but the ease of operation deteriorates compared to spring assisted mode
Solution Approach 1:
The knife implements a dynamic mode selection system where the user can switch between spring assisted mode and manual mode using a mode selector mechanism. This allows the operational characteristics of the knife to change based on user preference, resolving the contradiction by making the system adaptable rather than fixed in one operational mode
Solution Approach 2:
The knife changes the operational parameter of opening force assistance by allowing the user to select between spring assisted mode (higher assistance) and manual mode (no assistance). This parameter change enables the user to optimize for either ease of operation or simplicity depending on the situation
3Adaptability or versatility
If a folding knife allows mode switching between manual and spring assisted operation, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The mode selection mechanism is segmented into distinct components including a mode selector, spring mechanism, and linkage system. This segmentation allows each component to perform its specific function independently, making the overall complex system more manageable and easier to manufacture while still providing the desired adaptability
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 users to seamlessly switch between spring assisted and manual operation modes, providing flexibility and convenience in opening the blade member, enhancing user experience.
Implementation Method 1
a linear spring, the one end of which is engaged with either the spring assisted step or the manual step on the mode lever
Implementation Method 2
The mode lever is locked into a specific mode with a mode spring
Implementation Method 3
A pivoting end of the blade member is pivotally retained between first ends of the first and second side plates
Data Source
AI summary
A knife having two modes of operation includes a blade member, a first side plate, a second side plate, a spacer, a mode lever, and a linear spring. The spacer is disposed between the first and second side plates in an upper area thereof. A pivoting end of the blade member is pivotally retained between first ends of the first and second side plates. The mode lever is pivotally retained between the second ends of the first and second side plates, below the spacer. The linear spring is pivotally retained between the first and second side plates, below the spacer such that one end thereof engages one of two positions on the mode lever. A release button must be depressed to allow the blade member to pivot outward into an extended position in either mode.