Trigger Assembly Group Preventing Accidental Discharge
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Solution Overview
Problem
Current trigger assembly groups for AR-15 style rifles are ineffective in preventing accidental discharge due to rearward movement of the primary trigger and do not adequately address 'trigger slap' issues.
Innovation Solution
A trigger assembly group with an integral secondary trigger and a safety selector that reduces accidental discharge by incorporating a secondary trigger configured to prevent rearward pivot of the primary trigger, along with a design that eliminates 'trigger slap' through a mechanism involving locking wing members and housing grooves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secondary trigger is added to block rearward pivot of the primary trigger, then accidental discharge prevention is improved, but device complexity increases
Solution Approach 1:
The patent combines the primary trigger and secondary trigger into a single integrated trigger assembly group. The secondary trigger is positioned within the trigger guard and mechanically linked to the primary trigger, allowing both triggers to work together as a unified system to prevent accidental discharge while maintaining structural efficiency.
Solution Approach 2:
The trigger assembly is segmented into distinct functional components: the primary trigger for intentional discharge, the secondary trigger for blocking rearward pivot, the trigger guard for containment, and the sear mechanism for hammer engagement. This segmentation allows each component to perform its specific safety function independently while contributing to the overall reliability of the system.
2Reliability
If trigger guards and safety devices are incorporated, then accidental discharge prevention is improved, but ease of operation deteriorates
Solution Approach 1:
The trigger assembly incorporates dynamic elements including spring-loaded triggers that can pivot and return to their original positions, and a safety selector that can be dynamically engaged or disengaged. The secondary trigger automatically returns to its blocking position after being actuated, allowing rapid follow-up shots while maintaining safety during transitions.
Solution Approach 2:
The safety selector is designed to be engaged in advance before the firearm is activated, establishing a preliminary safety state. The secondary trigger is pre-positioned within the trigger guard to automatically block the primary trigger's rearward pivot path, so that safety protection is already in place before the operator needs to fire the weapon.
3Stability of the object's composition
If locking wing members and housing grooves are used to eliminate trigger slap, then operational stability is improved, but device complexity increases
Solution Approach 1:
The locking wing members act as intermediary elements between the trigger assembly and the housing. These wings engage with corresponding grooves in the housing to provide mechanical guidance and stability, preventing unwanted lateral movement or 'slap' of the trigger during operation while maintaining a relatively simple overall structure.
Data Source
AI summary
A trigger assembly group for use in firearms is disclosed. The trigger assembly group comprises a primary trigger connected to a secondary trigger that is arranged and configured to reduce the incidence of accidental discharge caused by inadvertently rearwardly actuating a primary trigger. The disclosed primary trigger and secondary trigger are arranged and configured for linear movement within a housing. The secondary trigger includes locking wing members that move from engagement with upper locking housing grooves to lower housing grooves. The disclosed trigger assembly group further includes a trigger shoe connected to the primary trigger, wherein the trigger shoe comprises a channel formed therein. A lower portion of the secondary trigger is configured to move from a forwardmost position, extending outwardly from the front face of the trigger shoe, to a rearmost position in which the lower portion of the secondary trigger recedes into the channel of the trigger shoe.