Striker-Fired Pistol Frame Assembly Takedown Safety Lever
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Solution Overview
Problem
Striker-fired pistols require trigger manipulation for disassembly, which can lead to unintended discharge if loaded, posing a safety risk due to potential chambering of a round during disassembly.
Innovation Solution
A frame assembly with a takedown actuation lever and safety lever that disengages the sear from the striker without triggering, allowing slide removal without pulling the trigger, and includes a magazine tab to prevent chambering during disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If trigger manipulation is used for disassembly, then the striker can be released from the sear, but unintended discharge may occur if the pistol is loaded
Solution Approach 1:
The trigger mechanism is segmented into two independent functions: the trigger itself for firing, and a separate takedown safety lever with sear tab for disassembly. The takedown safety lever independently controls the sear position, allowing disassembly operations to release the striker without requiring trigger manipulation, thus eliminating the risk of unintended discharge during disassembly.
2Ease of operation
If the trigger is pulled during disassembly, then the striker is released, but a round may be chambered and discharged
Solution Approach 1:
The takedown safety lever performs the preliminary action of disengaging the sear from the striker before any trigger manipulation occurs during disassembly. By pre-positioning the sear tab to control sear movement, the system ensures the striker is safely released without requiring the user to pull the trigger, thereby preventing any possibility of chambering and discharging a round during the disassembly process.
3Object-affected harmful factors
If a takedown safety lever is added, then safety during disassembly is improved, but device complexity increases
Solution Approach 1:
The takedown safety lever is merged with the existing trigger group assembly, sharing common mounting structures and operational sequences. The sear tab is integrated into the safety lever mechanism, and both components work in coordination with existing pistol parts like the magazine release button. This merging approach adds safety functionality while minimizing the increase in overall device complexity by leveraging existing structural elements.
Data Source
AI summary
A frame assembly for facilitating disassembly of a striker-fired pistol is disclosed. The frame assembly facilitates removal of the slide from a striker-fired pistol without trigger manipulation and with minimized potential for a round to be chambered. The frame assembly includes a takedown safety lever and a takedown actuation lever. Movement of the takedown safety lever causes the sear to be moved such that subsequent slide motion will not result in the storage of striker energy. Movement of the takedown safety lever is only possible while the slide is refracted beyond the point at which a chambered round would be ejected. Removal of the slide does not require pulling the trigger. The positioning of the takedown safety lever motion for disassembly may be precluded by the presence of a magazine in the gun, thereby eliminating the possibility that a round could be chambered during subsequent slide motion.