Hinged Trigger System with Firing Pin Lock for Pistols
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Solution Overview
Problem
Existing semiautomatic striker-fired pistols lack effective mechanisms to prevent accidental firing, particularly when dropped, due to the potential for inertia-driven firing pin activation upon impact.
Innovation Solution
A hinged trigger system with a firing pin lock, comprising a metal injection molded trigger support and a plastic trigger body, where the trigger bar is hinged to the support via an axle, and a spring mechanism ensures the firing pin remains locked even under impact, preventing accidental discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional single-piece trigger is used, then the structure is simple, but it cannot effectively prevent accidental firing upon impact
Solution Approach 1:
The trigger is divided into multiple components: a trigger body, a trigger bar, a firing pin, and a lock mechanism. This segmentation allows independent control of the trigger bar movement and firing pin release, enabling the trigger bar to be locked in place while still allowing intentional trigger pulls to function properly.
Solution Approach 2:
A lock mechanism acts as an intermediary between the trigger bar and the firing pin. This lock prevents the firing pin from being accidentally released by impact forces while still allowing deliberate trigger activation to release the lock and permit firing.
2Reliability
If a hinged trigger system with firing pin lock is implemented, then accidental firing is prevented, but the manufacturing complexity increases
Solution Approach 1:
The trigger system utilizes changes in mechanical parameters such as the position of the trigger bar, the state of the lock (engaged/disengaged), and the movement of the firing pin. These parameter changes enable the system to transition between safe and firing states through deliberate trigger activation.
Solution Approach 2:
The patent employs composite construction with a metal injection molded trigger support and a plastic trigger body. This combination of materials provides both structural integrity and ease of manufacturing through injection molding processes.
3Object-affected harmful factors
If additional safety components are added to the trigger system, then safety against accidental shots is improved, but the device complexity increases
Solution Approach 1:
The lock mechanism is integrated into the trigger assembly rather than being a separate external component. The trigger bar, lock, and firing pin work as a coordinated unit, reducing the need for additional separate safety devices while maintaining comprehensive protection against accidental firing.
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 hinged trigger system effectively prevents accidental shots from occurring upon impact, ensuring the firing pin remains immobilized and secure, thus enhancing safety against unintentional firing.
Implementation Method 1
a small spring acting between them
Implementation Method 2
a spring mechanism ensures the firing pin remains locked
Implementation Method 3
a hinging axle for the two components
Implementation Method 4
a hinged trigger system with a firing pin lock
Data Source
AI summary
Safety Device for a Shooting Mechanism of Double-Action Semi-Automatic Pistols Striker Fired The present application refers to a safety device for a shooting mechanism of semi-automatic guns, more specifically double action semi-automatic pistols striker fired, composed of a trigger support, a trigger body, a hinging axle for the two components, a small spring that acts between them and a trigger bar joined to the body of the trigger, with the addition of a firing pin lock located besides the front part of it and lodged in the breechblock.