Fishing Plier Locking Mechanism with Arc Guide Grooves
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Solution Overview
Problem
Existing fishing pliers with automatic opening mechanisms are inconvenient for carrying and storage due to their open state when not in use, and previous locking solutions are prone to jamming and require complex processing, resulting in inadequate locking and large gaps.
Innovation Solution
A locking mechanism for fishing pliers that includes a fixed and movable handle with rotating parts connected by a fixed shaft assembly, featuring straight slide grooves and a locking pin that slides along these grooves and a control groove to securely lock the pliers in a closed state, allowing for easy operation and small gap in the locked position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-driven positioning pin is used for locking, then the plier can be locked in closed state, but the structure becomes complex and processing becomes difficult
Solution Approach 1:
The invention extracts the spring component from the locking mechanism, eliminating the need for complex spring-driven positioning systems. Instead, it uses a simple positioning pin that moves along guide grooves formed directly in the handle bodies, significantly simplifying the overall structure while maintaining locking functionality.
Solution Approach 2:
The guide grooves are integrated directly into the handle bodies rather than being separate components. The positioning pin works in conjunction with these built-in grooves to achieve smooth movement and reliable locking, merging multiple functions into the existing handle structure.
2Ease of operation
If clearance space is arranged between positioning pin and guide holes for smooth movement, then the positioning pin can move easily, but the gap in locked state becomes large
Solution Approach 1:
The invention uses arc-shaped guide grooves instead of straight holes, allowing the positioning pin to follow a curved path during movement. This curved geometry enables the pin to maintain continuous contact with the groove walls while moving smoothly, achieving both easy operation and precise locking with minimal gap.
3Ease of operation
If a spiral surface is used to push the positioning pin movement, then the positioning pin can move smoothly, but the processing becomes difficult and cost increases
Solution Approach 1:
The invention replaces the complex spiral surface with simpler arc-shaped guide grooves that can be easily formed using standard machining or molding processes. The arc grooves provide the necessary curved guidance for smooth pin movement without requiring difficult spiral machining operations.
Solution Approach 2:
The guide grooves are formed as integral parts of the handle bodies through simple machining or molding, eliminating the need for separate, expensive spiral surfaces or specialized components. This approach significantly reduces manufacturing cost and complexity.
Data Source
AI summary
A locking mechanism for enabling a fishing plier to remain a closed state includes a fixed plier handle and a movable plier handle. The middle portion of the fixed plier handle is integrally provided with a first rotating part, and the middle portion of the movable plier handle is integrally provided with a second rotating part. The first rotating part and the second rotating part are rotatably connected through a fixed shaft assembly. A knob is disposed on the outer side of the first rotating part. Straight slide grooves are disposed between the second rotating part and the first rotating part. The inner end surface of the knob is provided with a control groove. A locking pin is inserted between the straight slide groove on the second rotating part, the straight slide groove on the first rotating part, and the control groove of the knob.