Firearm Magazine Disconnect Mechanism
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Solution Overview
Problem
Existing magazine-fed firearms can unintentionally discharge if a cartridge remains in the chamber after the magazine is removed, due to a lack of mechanism to ensure the firearm is fully unloaded.
Innovation Solution
Incorporating a magazine disconnect mechanism that prevents the firearm from firing unless a magazine is properly inserted, by engaging a trigger safety mechanism only when a magazine is present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magazine-fed firearm is designed to allow firing when a cartridge remains in the chamber after magazine removal, then the firearm maintains operational flexibility and ease of use, but the risk of unintentional discharge increases
Solution Approach 1:
The patent introduces a magazine disconnect mechanism as an intermediary component between the trigger assembly and the firing mechanism. This disconnect mechanism includes a trigger safety component that physically blocks the trigger assembly from moving to the rearward position when the magazine is removed, thereby preventing unintentional discharge while maintaining normal operation when the magazine is inserted
Solution Approach 2:
The trigger safety mechanism is designed to automatically engage in a blocking position when the magazine is removed, applying a preliminary counter-action that prevents the trigger assembly from moving. This preliminary anti-action occurs before any potential unintentional discharge can occur, ensuring safety without requiring user intervention
2Reliability
If a magazine disconnect mechanism is added to prevent unintentional discharge, then safety is improved, but the device complexity increases
Solution Approach 1:
The magazine disconnect mechanism is merged with the existing trigger assembly structure. The trigger safety component is integrated into the trigger guard assembly, and the disconnect mechanism shares structural elements with the magazine well and trigger housing, thereby reducing overall complexity compared to a completely separate safety system
Solution Approach 2:
The trigger safety mechanism is designed to automatically engage and disengage based on the presence or absence of the magazine, without requiring separate user actions. When the magazine is inserted, the disconnect mechanism self-actuates to permit firing; when removed, it automatically blocks the trigger, eliminating the need for additional safety steps
Data Source
AI summary
A firearm includes a frame defining a trigger opening and a magazine well; and a trigger assembly extending at least partially through the trigger opening, the trigger assembly movable relative to the frame between a forward position and a rearward position, the trigger assembly including: a trigger; a trigger safety movable relative to the trigger between an engaged safety position and a disengaged safety position; and a magazine disconnect extending at least partially into the magazine well, the magazine disconnect being movable relative to the trigger between an engaged disconnect position and a disengaged disconnect position, the magazine disconnect blocking the trigger safety from rotating from the engaged safety position to the disengaged safety position when the magazine disconnect is in the engaged disconnect position, the trigger safety being movable from the engaged safety position to the disengaged safety position when the magazine disconnect is in the disengaged disconnect position.