Snare Trap Trigger Mechanism for Consistent Loop Tightening
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Solution Overview
Problem
Conventional snare traps face issues with inconsistent triggering, difficulty in setting, and risk of over-compression or early/late triggering due to trigger design and snagging on the cable, which affects the efficiency and reliability of capturing small animals.
Innovation Solution
A snare trap design featuring a cable with a tether end and snare end, a spring with biased arms, and a trigger that moves between set and unset positions to control the tightening of the snare loop, incorporating a cam-lock mechanism and breakaway device to ensure consistent and efficient trapping, along with a washer to assist in spring compression and prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional triggers are used, then the trap can be set, but the trigger may snag on the cable causing early or late triggering
Solution Approach 1:
The trigger tip is extracted as a separate component that contacts only the spring arm, not the cable directly. This separation removes the trigger from potential cable snagging while maintaining its function of releasing the spring to tighten the snare loop.
Solution Approach 2:
The spring arm acts as an intermediary between the trigger and the cable system. The trigger releases the spring arm, which then controls the cable tension and snare loop tightening, preventing direct trigger-cable interaction that causes snagging.
2Reliability
If the spring is over compressed to ensure triggering, then the trap may trigger reliably, but the spring loses its strength
Solution Approach 1:
The spring is designed with optimized compression parameters that balance triggering reliability with strength retention. The spring arm geometry and material properties are tuned to provide sufficient force for reliable triggering without excessive compression that would permanently weaken the spring.
Solution Approach 2:
The spring is compressed to the precise amount needed for reliable triggering rather than over-compression. The trigger mechanism is designed to release at the optimal point in the spring's compression cycle, extracting maximum effectiveness without exceeding the spring's elastic limits.
3Ease of operation
If the trigger design is simplified, then the trap is easier to set, but the triggering becomes inconsistent
Solution Approach 1:
The trigger system is segmented into distinct functional components: the trigger tip for release initiation, the spring arm for force storage and transmission, and the cable connection points for mechanical advantage. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity.
Solution Approach 2:
The trigger mechanism utilizes dynamic spring compression and release to achieve consistent triggering. The spring's elastic properties provide a predictable force curve that ensures reliable release regardless of minor variations in setting or animal interaction, maintaining consistency without complex mechanisms.
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 ensures consistent and efficient tightening of the snare loop, reducing the risk of over-compression and snagging, thereby improving the reliability and effectiveness of the trap in capturing small animals.
Implementation Method 1
The spring has a first arm and a second arm. The first arm and the second arm are biased towards an open orientation such that the spring in the open position appears sprung. The ends of the first arm and the second arm slidingly engage on the cable.
Implementation Method 2
The first aperture of the travelling loop is a cam-lock. The cam-lock acts as a locking mechanism to lock onto the cable.
Data Source
AI summary
A snare trap has a cable, a spring and a trigger. A traveling loop slidingly engages the cable and creates a snare loop. A locking mechanism locks the snare loop onto the cable. The spring has a first arm and a second arm. The first arm and the second arm are biased towards an open orientation such that the spring in the open position appears sprung. The ends of the first arm and the second arm slidingly engage the cable. The trigger is movable between a set position in which the trigger tip contacts the second arm of the spring and holds the spring in a closed position such that the first arm and the second arm are tensioned towards each other and an unset position in which the trigger tip does not contact the second arm of the spring.