Offset Tab Trigger Bar for Firearm Assembly
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Solution Overview
Problem
Current trigger assemblies in semi-automatic firearms rely on complex connections between the trigger, trigger bar, and sear, which can be prone to misalignment and increased manufacturing complexity, affecting the reliability and ease of assembly.
Innovation Solution
A U-shaped trigger bar with a forward-extending tab and offset centerline, allowing for a simplified connection to the trigger and sear assembly, featuring a trigger bar pin hole for receiving the trigger bar pin, enabling the trigger bar to function independently within the firearm's trigger bar slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex connection system is used between trigger, trigger bar, and sear, then the structural functionality is achieved, but the manufacturing complexity and misalignment risk increase
Solution Approach 1:
The trigger bar is divided into distinct functional segments: a body portion with U-shaped configuration for sear engagement and a separate tab portion for trigger connection. This segmentation allows each part to be optimized independently and simplifies the overall assembly by clearly defining connection interfaces.
Solution Approach 2:
The trigger bar pin hole is extracted and positioned specifically in the tab portion, separating the pin reception function from the main body. This extraction simplifies the connection mechanism by isolating the pin interface to a dedicated location, reducing misalignment risks in the overall assembly.
2Stability of the object's composition
If multiple connection points are used between trigger and trigger bar, then the connection stability is improved, but the assembly difficulty increases
Solution Approach 1:
The tab portion merges the trigger connection function with the pin hole reception function into a single integrated element. This merging reduces the number of separate components and assembly steps while maintaining stable connection through the combined structural feature.
Solution Approach 2:
The tab portion serves multiple functions: it provides the connection interface for the trigger, contains the pin hole for the trigger bar pin, and maintains the offset centerline geometry. This multi-functionality reduces the overall number of components needed while ensuring stable connection.
Data Source
AI summary
A trigger bar for a semi-automatic firearm including a continuous U-shaped body and a single tab extending outward from a base of the U-shaped body. The tab is offset from a centerline located between legs of the U-shaped body. The trigger bar is configured to operate the sear when the legs are coupled to a sear assembly of the firearm, and only the single tab is coupled to a trigger of the firearm via a trigger bar slot of the trigger.