Firearm Sear Connector Blocker Prevents Unintentional Discharge
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Solution Overview
Problem
Current striker-fired pistols lack an effective mechanism to prevent unintentional discharge and ensure reliable firing control, particularly in scenarios where inertial forces may act on the firearm.
Innovation Solution
The introduction of a sear connector blocker mechanism that is pivotably movable between a blocking and non-blocking position, disengaging the sear connector from the sear only upon intentional trigger pull, thereby preventing accidental release of the striker and enhancing safety and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a striker-fired mechanism is used to simplify the firing system, then device complexity is reduced, but reliability against unintentional discharge deteriorates
Solution Approach 1:
The sear connector blocker is positioned to preemptively prevent the sear connector from disengaging the sear under inertial forces or accidental conditions. By establishing this preliminary blocking state, the mechanism counteracts potential harmful actions before they can occur, maintaining reliability while keeping the striker-fired simplicity.
Solution Approach 2:
The sear connector blocker acts as an intermediary component between the sear connector and the sear. It mediates the interaction by selectively permitting or preventing disengagement, thus adding a layer of safety control without requiring a complete redesign of the striker-fired mechanism.
2Reliability
If a sear connector blocker mechanism is added to prevent unintentional discharge, then reliability is improved, but device complexity increases
Solution Approach 1:
The sear connector blocker is designed to be dynamically controllable through trigger pull. It transitions from a blocking state to a non-blocking state based on operational need, allowing the system to maintain simplicity during normal operation while providing enhanced safety when required. This dynamic behavior adds functionality without permanently increasing structural complexity.
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
This solution provides a safer and more reliable firing mechanism by ensuring the striker is only released when the trigger is intentionally pulled, reducing the risk of unintentional discharge and enhancing the mechanical advantage for consistent cartridge ignition.
Implementation Method 1
a spring-biased striker movable axially along the longitudinal axis in a linear path between a rearward cocked position and a forward firing position for striking a chambered cartridge
Implementation Method 2
the sear connector blocker comprises a front downwardly biased and projecting hooked portion configured to engage an upwardly projecting operating arm of the sear connector to prevent the sear connector from moving and disengaging the sear
Data Source
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AI summary
A firing control system for a firearm includes a frame, a barrel with chamber configured for holding a cartridge, a spring-biased striker movable forward and rearward in a linear path along a longitudinal axis, a trigger mechanism comprising a trigger, a pivotable sear, a pivotable sear connector engaged with the sear, a sear pivotable connector blocker engaged with the sear connector, and a linearly movable sear connector actuator engageable with and operable to move the sear connector and sear connector blocker. Pulling the trigger slides the sear connector actuator which in sequence engages and rotates the sear connector blocker to disengage the sear connector, and engage and rotate the sear connector to disengage the sear and release the striker from a cocked position to discharge the firearm. In the absence of a trigger pull, the sear connector blocker remains engaged with the sear connector to prevent firing the firearm.