Recoil-Operated Firearm Trigger Mechanism Against Accidental Firing
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Solution Overview
Problem
Existing personal defense firearms fail to meet safety, practicality, and compactness requirements due to issues with accidental firing and ease of use.
Innovation Solution
A firearm design incorporating a recoil-operated mechanism with an antagonist lever and a closing block, along with a trigger mechanism that uses inertial forces to prevent accidental firing, ensuring safety and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple trigger mechanism is used, then ease of operation is improved, but safety deteriorates due to risk of accidental firing
Solution Approach 1:
The antagonist lever is pre-loaded with inertial forces that automatically oppose the release lever's motion. This preliminary counter-action prevents accidental firing by creating a force barrier that must be overcome by intentional trigger pull, while not interfering with proper operation when the trigger is deliberately actuated.
Solution Approach 2:
The antagonist lever functions as a mechanical counterweight system where its mass distribution creates inertial forces that balance and control the release lever. This counterbalancing mechanism provides safety by opposing unintended release motions while allowing controlled operation through the trigger transmission rod.
2Length of moving object
If the firearm is made compact, then portability is improved, but safety mechanisms become more difficult to integrate
Solution Approach 1:
The antagonist lever is integrated into the existing trigger mechanism assembly, sharing common mounting points and operational space with the release lever. This merging of functions allows the safety mechanism to be incorporated without adding significant external dimensions, maintaining compactness while enhancing safety.
Solution Approach 2:
The antagonist lever utilizes the vertical dimension and angular orientation relative to the barrel axis, rather than extending the horizontal length. By arranging the mass distribution in a different spatial dimension (tilted orientation in the median plane), the mechanism achieves safety functionality without increasing the firearm's overall length.
3Ease of operation
If manual arming action on breechblock is reduced, then ease of use is improved, but reliability of arming may deteriorate
Solution Approach 1:
The antagonist lever automatically performs its safety function through its own inertial properties during the normal arming cycle. As the breechblock moves and the release lever operates, the antagonist lever self-regulates by generating opposing inertial forces that prevent accidental release without requiring additional manual intervention or complex control systems.
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 effectively prevents accidental firing through the use of inertial forces and a trigger mechanism, enhancing safety and practicality while maintaining a compact form factor.
Implementation Method 1
the mass of said antagonist lever being distributed and arranged to strain said antagonist lever with inertial forces that contrast said release lever for preventing the accidental release of the striker
Implementation Method 2
a longitudinal elastic device for the recovery of the recoil kinetic energy of the breechblock for rearming the striker
Data Source
AI summary
A firearm comprises a frame; a barrel; a hand grip; a breechblock slidable along the frame; a striker slidable in the breechblock; a longitudinal elastic device for the recovery of the recoil kinetic energy for rearming the striker; and a closing block for locking the breechblock in the closing position, the closing block having a body which extends longitudinally and having a rear wall engaged with a downward protrusion integral with the barrel, a front wall engageable with the breechblock and a longitudinal recess which opens at the front wall, where the longitudinal elastic device for the recovery of kinetic energy has a longitudinal rear portion housed in the recess and a longitudinal front portion retractable towards the inside of the recess, and is longitudinally interposed between a front stop abutment solidly constrained to the breechblock and a rear stop abutment solidly constrained to the frame.