Optical Replica Gun Trigger for Adjustable Press Detection

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Solution Overview

Problem

Existing gun replicas face issues such as non-customizable sensitivity, mechanical contact wear, and limited durability of trigger switches, leading to malfunctions and reduced precision in trigger detection.

Innovation Solution

A gun replica trigger system using an optoelectric sensor with a transmitter and receiver on a printed circuit board, integrated into the frame halves, and a reflecting surface on the trigger's angle bracket, allowing precise detection of trigger position without reliance on replica structure elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mechanical contacts are used in trigger switches, then the trigger operation is simple and reliable, but the contacts burn due to current flow and the trigger switch malfunctions

Engineering Contradiction:
Improvetrigger switch reliabilityVSAvoidcontact burning and malfunction
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the mechanical contact-based trigger switch with an optoelectric sensor system consisting of a light source, light receiver, and trigger blade with light-blocking properties. This substitution eliminates direct electrical contacts, preventing contact burning and malfunction while maintaining reliable trigger detection through optical signal interruption.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If standard triggers are used with optoelectric sensors, then the detection precision is improved, but the sensitivity cannot be configured individually to user needs

Engineering Contradiction:
Improvetrigger position detection precisionVSAvoidsensitivity configuration flexibility
Core Design Contradiction:
Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent introduces adjustable sensitivity through variable spring preload force on the trigger blade. The spring constant and preload can be modified to change the force required to move the trigger blade, thereby adjusting the sensitivity threshold. This dynamic adjustment mechanism allows individual customization while maintaining precise optical detection.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent enables sensitivity configuration by changing physical parameters of the trigger mechanism, specifically the spring constant and preload force. These parameter changes directly affect the trigger blade's response threshold to user pressure, allowing individual sensitivity adjustment while preserving the precision of optoelectric position detection.

Inventive Principle:
Principle #35Parameter changes

3Speed

If microswitches are used in triggers, then the trigger operation is responsive, but the microswitches have low resistance to mechanical damage and limited short-circuit cycles

Engineering Contradiction:
Improvetrigger response speedVSAvoidmicroswitch durability
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent replaces the mechanical microswitch with an optoelectric sensor system that detects trigger position through light interruption. This eliminates mechanical contacts and moving parts in the switching mechanism, preventing mechanical damage and short-circuit failures while maintaining rapid response through optical detection.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the light-blocking function from a mechanical microswitch and implements it through a dedicated trigger blade designed specifically for optical detection. This separation allows the trigger blade to be optimized purely for mechanical movement and optical interaction, while the switching function is handled by the optical sensor, eliminating wear and electrical contact issues.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Enhances trigger sensitivity by up to 500% and improves precision, eliminating mechanical wear and malfunctions, while maintaining reliability and durability.

Implementation Method 1

an optoelectric sensor in the gun replica is composed of a transmitter and a receiver of the reflected light

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentEP4043824B1Replica weapon having a trigger
Publication Date: 2026.03.04 GATE ENTERPRISE SP ZOO
  • EP4043824B1 patent drawingFigure 1~2
  • EP4043824B1 patent drawingFigure 3~4
  • EP4043824B1 patent drawingFigure 5~6

AI summary

The subject of the invention is a trigger that improves the sensitivity of detecting a trigger press in gun replicas, in particular ASG with electronic circuits using optical sensors to detect the position of the trigger. The essence of the solution according to the present invention is that the obscuring surface on the inner surface of the long arm of the angle bracket is a reflecting surface.