Single-Action Trigger Mechanism for Glock Handguns
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Solution Overview
Problem
Existing single-action trigger mechanisms for striker-fired handguns require significant trigger pull distance and mechanical effort, which can lead to misfires and malfunctions due to reduced striker spring force when intermediate components are added to lighten the effort, compromising safety and performance.
Innovation Solution
A single-action trigger mechanism with intermediate elements between the trigger bar and striker, including a pivoting trigger, sear/disconnector assembly, and slider assembly, reduces mechanical effort without modifying the striker spring force, allowing for a drop-in replacement in Glock-pattern handguns, providing enhanced safety and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If intermediate components are added to lighten the trigger pull effort, then the mechanical effort required to pull the trigger is reduced, but the striker spring force is significantly reduced causing misfires and malfunctions
Solution Approach 1:
The patent introduces an intermediate lever mechanism between the trigger and striker that acts as a mechanical mediator. This lever system provides mechanical advantage to reduce trigger pull effort while maintaining the full striker spring force through a cam-based release mechanism, resolving the contradiction between ease of operation and reliability
Solution Approach 2:
The patent changes the mechanical parameters of the trigger system by introducing a lever arm with specific length ratios and a cam profile. These parameter changes allow the system to reduce the force required at the trigger while maintaining the force output at the striker through geometric mechanical advantage
2Length of moving object
If the trigger pull distance is shortened in a single-action mechanism, then the mechanical effort is reduced, but the safety and reliability are compromised due to insufficient striker force
Solution Approach 1:
The intermediate lever acts as a mediator that decouples the trigger pull distance from the striker release force. The lever arm amplifies the short trigger movement into sufficient force at the striker while maintaining full spring energy transfer, resolving the contradiction between short pull distance and reliable striker force
3Ease of manufacture
If a drop-in replacement trigger mechanism is implemented, then the ease of installation is improved, but the device complexity increases due to multiple internal safeties and intermediate elements
Solution Approach 1:
The patent merges multiple functions (trigger operation, safety mechanisms, striker release) into a single integrated lever assembly that can be installed as one unit. This consolidation maintains ease of installation while managing complexity through functional integration rather than separate components
Data Source
AI summary
Provided is a single-action trigger assembly that includes a pivoting trigger member, a sear/disconnector mechanism, and a trigger bar operably connecting the trigger member and the sear/disconnector mechanism. The sear/disconnector mechanism includes a slider assembly longitudinally reciprocated by the trigger bar. The slider assembly includes a tripper member carried on a slider frame that, when the trigger is pulled, moves a sear trip member to allow displacement of a sear and release a striker.