Balanced Firearm Trigger Geometry Against Drop Discharge
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Solution Overview
Problem
Existing rifle triggers are prone to negligent discharge and trigger slap due to movement during drops or impacts, which can be caused by the geometry and interaction of components leading to abrupt forward movement.
Innovation Solution
A dynamically balanced trigger system with a center of gravity near the axis of rotation, balanced weight distribution, and specific design features to prevent movement, such as a bore, nose, tail, and shoe configuration, along with a disconnector and sear mechanism to mitigate accidental discharges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the trigger system uses conventional component geometry and interaction, then the trigger can be manufactured with standard designs, but the trigger is prone to movement during drops causing negligent discharge
Solution Approach 1:
The trigger assembly incorporates a counterbalance weight positioned to offset the moment created by the spring and disconnector during impact. This counterweight creates an opposing moment that prevents the trigger from rotating forward during drops, thereby eliminating negligent discharge while maintaining standard component geometry.
Solution Approach 2:
The trigger assembly is pre-balanced with a counterweight that anticipates and counteracts the harmful moment during impact before it can cause negligent discharge. This preliminary anti-action ensures that even during unexpected drops, the trigger remains stable and cannot discharge.
2Ease of manufacture
If the trigger components are designed with standard geometry, then manufacturing is simplified, but trigger slap occurs due to abrupt forward movement during hammer re-cocking
Solution Approach 1:
The counterbalance weight is positioned to counteract the abrupt forward movement of the trigger during hammer re-cocking. This prevents the trigger from snapping forward (trigger slap) while maintaining standard component geometry and manufacturing processes.
Solution Approach 2:
The trigger assembly incorporates dynamic balancing that adapts to the movement characteristics during hammer re-cocking. The counterweight creates a balancing moment that smooths out the trigger's motion trajectory, eliminating the abrupt forward movement that causes trigger slap.
3Reliability
If the trigger assembly is made more stable to prevent movement during drops, then negligent discharge is reduced, but the trigger may not return to battery position reliably
Solution Approach 1:
The counterbalance weight is strategically positioned to provide stability during drops without interfering with the trigger's return to battery position. The weight's position and mass are optimized to create stability during impact while allowing the spring to effectively return the trigger to its starting position.
Solution Approach 2:
The trigger assembly's balance parameters are optimized to distinguish between two conditions: during drops, the counterweight provides stabilizing moment; during normal operation, the spring's return force overcomes the counterweight's moment, ensuring reliable return to battery position. This parameter optimization resolves the contradiction between stability and operability.
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 system significantly reduces the chances of accidental discharge and trigger slap by maintaining the trigger's balanced position during drops and impacts, enhancing safety and precision.
Implementation Method 1
A spring-loaded plunger may be disposed within the channel and configured to bias the disconnector away from the trigger and toward the sear
Implementation Method 2
A hammer spring may be disposed around the hammer pin and configured to bias the hammer toward the cocked position
Implementation Method 3
A trigger spring may be disposed around the trigger pin and configured to bias the trigger
Data Source
AI summary
A dynamically balanced trigger system for a firearm. The dynamically balanced trigger has a specific design, orientation, weights, and cutouts such as to provide a balanced trigger, where the chances of accidental discharge due to drops, shocks, and impacts are dramatically reduced. Unlike other triggers, the dynamically balanced trigger system has a trigger with a center of gravity near the center point of the trigger, which weights the trigger components against itself to prevent movement, such as may be caused by dropping the firearm, thereby helping prevent an unintentional discharge of the firearm.