Automatic Hook-Setting Mechanism With Adjustable Bite Detection

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Solution Overview

Problem

Existing automatic jerking devices for fishing are limited in their ability to detect bites accurately, require manual operation, and lack adjustability for different fishing conditions and user skill levels, leading to inefficiencies and fatigue.

Innovation Solution

An automatic jerking device with a biting signal detection member, trigger, latch, and elastic wire that adjusts sensitivity and jerking strength based on fish species and environment, and includes a notification mechanism to inform users of bites.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If an automatic jerking device is used to detect bites and perform jerking automatically, then fishing efficiency is improved and user fatigue is reduced, but the device complexity increases

Engineering Contradiction:
Improvefishing efficiencyVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The automatic jerking device is divided into independent functional modules: a biting signal detection member for detecting fish bites, a trigger mechanism for initiating jerking, a latch for controlling the jerking action, and an elastic wire for providing restoring force. Each module performs a specific function, allowing the system to achieve automatic jerking while maintaining manageable complexity through modular design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The device is designed to automatically detect bites through the biting signal detection member and automatically execute jerking actions through the trigger and latch mechanisms, eliminating the need for continuous manual monitoring and operation. The elastic wire automatically restores the mechanism to its initial state after each jerking action, enabling continuous automatic operation without user intervention.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If the biting signal detection member is made highly sensitive to detect all bites, then bite detection accuracy is improved, but false triggering increases due to minor line movements

Engineering Contradiction:
Improvebite detection accuracyVSAvoidfalse triggering
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The rotation switch is designed with an adjustable threshold parameter that determines the rotation angle required to trigger the jerking mechanism. By adjusting this threshold, the system can differentiate between significant bite signals and minor line movements, allowing optimization of detection sensitivity while minimizing false triggering based on the specific fishing conditions and target fish species.

Inventive Principle:
Principle #35Parameter changes

3Strength

If the jerking force is increased to ensure fish are hooked, then hooking success is improved, but the fishing line may break or the bait may be lost

Engineering Contradiction:
Improvejerking forceVSAvoidline breakage or bait loss
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The elastic wire provides a periodic restoring force that automatically returns the trigger and latch mechanism to their initial positions after each jerking action. This periodic action allows the system to deliver strong jerking forces when needed while naturally resetting to a lower force state, reducing the risk of line breakage or bait loss during non-bite periods.

Inventive Principle:
Principle #19Periodic action

4Adaptability or versatility

If the device is designed to work with various fishing postures (hand-held or supported), then adaptability is improved, but the device structure becomes more complex

Engineering Contradiction:
Improvefishing posture adaptabilityVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The base is designed with a universal mounting structure that can accommodate different fishing postures and configurations. The biting signal detection member, trigger, and latch mechanisms are arranged to function effectively whether the fishing rod is held by hand or supported on a rest, allowing a single device design to serve multiple fishing scenarios without requiring additional complex components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 device effectively detects bites and performs jerking at optimal times, reducing user fatigue and improving fishing efficiency by adjusting sensitivity and strength, while preventing missed catches.

Implementation Method 1

an elastic wire for pulling the latch and the towing hook

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a biting signal detection member rotated by a bite of a fish

Methodology Applied
Scientific EffectMechanical Force: Force

Data Source

PatentEP4144215B1Automatic hook setting apparatus for fishing
Publication Date: 2026.04.22 KWON TAE HWA
  • EP4144215B1 patent drawingFigure 1~2
  • EP4144215B1 patent drawingFigure 3~4(C)
  • EP4144215B1 patent drawingFigure 5~6

AI summary

The present invention relates to an automatic jerking device for fishing, and more particularly, to an automatic jerking device for fishing, which has a biting signal detection member for detecting a biting when a fish bites a bait during fishing, and automatically performs a jerking to catch the fish at a proper timing.