Firearm Trigger Safety Assembly with Camming Surface
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Solution Overview
Problem
Existing firearm systems fail to effectively prevent accidental discharge by ensuring the trigger cannot be inadvertently pivoted rearward without intentional pressure application, particularly in designs that rely on blocking the trigger until a user's finger is on it.
Innovation Solution
A trigger assembly for firearms that includes a camming surface and a spring-loaded plunger mechanism, where the paddle release is configured to engage with the lower receiver's slot only upon deliberate pressure application, limiting the trigger's pivot range until the paddle release is depressed, thereby preventing unintended firing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the trigger is blocked from rearward movement until a user's finger is on the trigger and applies pressure, then the possibility of accidental discharge is minimized, but the complexity of the blocking mechanism increases
Solution Approach 1:
The trigger assembly is divided into distinct functional components: the trigger body, the paddle release, and the camming surface. Each component performs a specific function in the safety mechanism, allowing the complex safety function to be achieved through simpler, dedicated parts rather than a monolithic complex mechanism.
Solution Approach 2:
The paddle release acts as an intermediary element between the user's finger and the trigger body. It mediates the interaction by requiring deliberate pressure application to depress the paddle, which then allows the trigger to be actuated, thereby preventing accidental discharge while maintaining ease of use.
2Reliability
If a camming surface is engaged with the lower receiver to block trigger movement, then the trigger cannot be inadvertently pivoted, but the device complexity increases
Solution Approach 1:
Instead of using a complex multi-component blocking mechanism, the invention uses a simple camming surface that engages with the lower receiver slot to prevent trigger movement. The camming surface is depressed by finger pressure to release the trigger, inverting the conventional approach of using complex active blockers rather than simple passive constraints.
Solution Approach 2:
The camming surface changes its engagement state based on the depression parameter of the paddle release. When the paddle is in its undepressed state, the camming surface engages with the lower receiver slot to constrain trigger movement. When the paddle is depressed, the camming surface disengages, allowing trigger actuation. This parameter-based state change provides a simple yet effective safety mechanism.
3Reliability
If the trigger pivot range is limited until the paddle release is depressed, then accidental discharge is prevented, but the ease of operation may be affected
Solution Approach 1:
The paddle release requires preliminary depression action before the trigger can be actuated. This preliminary action ensures that the user intends to fire the weapon deliberately, as they must first press the paddle to depress the camming surface and release the trigger constraint. This preliminary step prevents accidental discharge while maintaining operational smoothness for intentional 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 solution effectively minimizes the risk of accidental discharge by ensuring the trigger cannot be activated until deliberate pressure is applied, enhancing user safety by limiting the trigger's pivot range until the paddle release is fully depressed.
Implementation Method 1
a spring loaded plunger positioned within the trigger body configured to engage the plunger engaging surface to bias the paddle release in a forward counter clockwise direction
Data Source
AI summary
The present disclosure provides a trigger assembly and related method for a firearm (e.g., an AR, SR-25, or M4 style rifle, or another type of firearm). The trigger assembly minimizes inadvertent discharge of the firearm by blocking the trigger from rearward pivoting until pressure is applied to the center portion of the trigger. The system and method employ a configuration wherein a camming surface is engaged with a machined portion of the lower receiver once the trigger assembly is connected to the lower receiver via a pivot that extends through the trigger assembly and at least a portion of the lower receiver.