Folding Knife Lockup Switch With Kidney-Shaped Hole
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Solution Overview
Problem
Existing folding knives lack a safety locking structure, making them unsafe and inconvenient to operate, and the anti-rebound structure is complex and costly to implement.
Innovation Solution
A folding knife design featuring a lockup switch with a long kidney-shaped mounting hole, a spring, stopper, and dial button, allowing for safe locking and easy operation with a simple and cost-effective mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety locking structure is added to the folding knife, then safety performance is improved, but device complexity increases
Solution Approach 1:
The lockup switch is integrated into the blade assembly, combining the locking mechanism with the existing blade structure. The lockup part is directly connected to the blade and works in conjunction with the stopping slot in the handle, merging multiple functions into a unified structure that reduces overall complexity while maintaining safety functionality.
Solution Approach 2:
The lockup switch automatically engages when the blade is inserted into the handle, and automatically disengages when the blade is removed. The spring provides automatic resetting functionality, eliminating the need for separate manual locking and unlocking operations. This self-service mechanism simplifies the user interface while ensuring reliable safety locking.
2Reliability
If a conventional safety lock is implemented, then safety performance is improved, but ease of operation deteriorates
Solution Approach 1:
The lockup switch automatically activates when the blade is inserted into the handle, requiring no manual intervention from the user. The spring mechanism automatically resets the lockup part to the engaged position, providing continuous safety locking without requiring the user to remember or perform additional actions. This eliminates the operational burden while maintaining high safety performance.
3Reliability
If a leaf spring boosting anti-rebound structure is added, then safety performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The lockup switch assembly is integrated with the blade structure, combining multiple components into a unified assembly that reduces the total number of parts. The spring mechanism is incorporated within the lockup switch housing, eliminating the need for separate anti-rebound structures. This integration simplifies the manufacturing process and reduces overall production costs while maintaining safety functionality.
Solution Approach 2:
The lockup switch serves multiple functions: it provides safety locking when the blade is inserted, prevents accidental discharge, and acts as an anti-rebound mechanism. The spring provides both locking force and resetting functionality. This multi-functionality eliminates the need for separate specialized components, reducing manufacturing complexity and cost.
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 provides a safe and easy-to-use locking mechanism that enhances the safety performance of the folding knife while maintaining a low implementation cost.
Implementation Method 1
a spring provided in the long kidney-shaped hole and in an extending direction of the long kidney-shaped hole
Data Source
AI summary
The invention discloses a folding knife, comprising: a blade, whose upper part is configured with a lockup switch mounting hole; a handle, whose lower part is configured with a stopping slot; a lockup switch provided in the lockup switch mounting hole and having a lockup part located on the first side of the blade, the lockup part has a lockup position at which it is clapped in the stopping slot when the blade and the handle are buckled up and an unlock position at which it is released from the stopping slot when the blade is separated from the handle. The folding knife of the invention enables safe locking after the blade is folded in the handle by making use of the lockup switch having a lockup part, the structure of the folding knife is simple and easy to implement, and safety performance of the folding knife is improved.