Folding Knife Switch Mechanism for Manual Semi-Automatic Mode Transition
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Solution Overview
Problem
Existing folding knives lack a mechanism to switch between manual and semi-automatic operation modes, making them either difficult to open but safe, or easy to open but less safe, depending on the type, without accommodating user requirements.
Innovation Solution
A fold knife with a switch mechanism that includes a resilient portion and a switch member, allowing the blade to be manually or semi-automatically opened by adjusting the position of the switch member, which can be slid or pivoted within the handle, enabling easy switching between operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual type fold knife is used, then safety for users such as kids is improved, but effort required to open the blade increases
Solution Approach 1:
The knife incorporates a switch mechanism that allows dynamic switching between manual and semi-automatic operation modes. The switch member can be positioned to engage or disengage the resilient portion, changing the operational characteristics from fully manual to semi-automatic, thus adapting the balance between safety and ease of opening based on user needs
2Ease of operation
If a semi-automatic fold knife is used, then ease of opening the blade is improved, but safety for users such as kids is degraded
Solution Approach 1:
The switch mechanism enables dynamic adjustment of the operational mode. When the switch member is positioned to disengage the resilient portion, the knife operates in manual mode for safety. When engaged, it provides semi-automatic operation for ease of opening, allowing the same knife to adapt to different safety requirements based on the user's needs
3Device complexity
If a fixed operation mode is used, then device complexity is reduced, but adaptability to different user requirements is worsened
Solution Approach 1:
The knife incorporates a switch mechanism with a switch member that can be positioned to engage or disengage the resilient portion. This simple mechanical switching system allows the knife to transition between manual and semi-automatic modes without requiring complex electronic controls or multiple knives, thus maintaining relative simplicity while achieving operational flexibility
Solution Approach 2:
The single knife design incorporates multiple operation modes (manual and semi-automatic) through the switch mechanism, allowing one device to serve different user requirements. The resilient portion and switch member work together to provide both manual operation and automatic assistance, making the knife adaptable to various users from children to adults
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 fold knife can seamlessly transition between manual and semi-automatic operation, ensuring safety for users like children while facilitating easy opening, thus meeting various user needs.
Implementation Method 1
a resilient portion pivotally mounted in the handle
Data Source
AI summary
A fold knife comprising a handle and a blade hinged to the handle. The fold knife further comprises a switch mechanism for manual and semi-automatic operation which is positioned in the inner chamber of the handle. The switch mechanism for manual and semi-automatic operation has a first position in which it is allowed to manually open the blade from the handle and a second position in which it is allowed to automatically open the blade from the handle. The fold knife is capable of easily switching between the manual operation condition and the semi-automatic operation condition by means of the switch mechanism for manual and semi-automatic operation.