Firearm Safety Selector Assembly with Threaded Retention
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Solution Overview
Problem
Existing safety selector assemblies for firearms are not easily installable or removable, and do not accommodate left and right-handed users efficiently, limiting user convenience and mode switching.
Innovation Solution
A safety selector assembly featuring a cylinder with a lever and threaded member that allows for quick installation and removal, with a set screw mechanism that secures the lever in place, enabling easy switching between operating modes and accommodating different user preferences through interchangeable levers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the safety selector assembly uses a fixed, permanently attached lever design, then the structural integrity and reliability are improved, but the ease of installation and removal deteriorates
Solution Approach 1:
The safety selector assembly is divided into separable components: a cylinder body and a lever that can be independently attached and detached. The lever includes a head portion with a cutout that receives the cylinder, and a retention mechanism with a set screw that secures the lever to the cylinder body. This segmentation allows the lever to be easily installed and removed while maintaining structural integrity during use.
Solution Approach 2:
The retention mechanism transitions from a static, permanently fixed connection to a dynamic, adjustable connection. The set screw can be loosened to allow lever removal and tightened to secure the lever in place. This dynamic retention system enables the assembly to switch between a secure attached state during operation and a detached state for installation or maintenance.
2Device complexity
If the safety selector assembly uses a simple retention mechanism, then the device complexity is reduced, but the reliability of lever retention deteriorates
Solution Approach 1:
The set screw mechanism is designed to be self-retaining through threading engagement with the cylinder body. Once the set screw is tightened against the lever's head portion, the threaded connection automatically maintains the retention force without requiring additional active components or continuous energy input. The user simply needs to tighten the screw to achieve reliable retention.
3Adaptability or versatility
If the safety selector assembly accommodates multiple user preferences with interchangeable levers, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The cylinder body and retention mechanism are designed as universal components that work with multiple lever variations. The cutout geometry and set screw retention system provide a standardized interface that accommodates different lever configurations for left-handed and right-handed users. This universal design allows a single cylinder body to support multiple lever types without requiring separate retention mechanisms for each user preference.
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
Facilitates quick and easy installation and removal of the safety selector assembly, allowing for efficient mode switching and accommodating both left and right-handed users, enhancing user convenience and operational efficiency.
Implementation Method 1
a threaded member configured to threadably engage the cylinder end and to move between a first and a second position in relation to the cylinder
Implementation Method 2
an end portion of the threaded member contacts the first surface of the lever and the contact between the end portion of the threaded member and the first surface of the lever causes the lever to be retained on the cylinder end
Data Source
AI summary
A safety selector assembly for a firearm includes a cylinder sized and shaped to be rotatably received within a lower receiver; and a lever detachably coupled to the cylinder end and secured to the cylinder end by a threaded member. The threaded member is configured to engage the cylinder end, and to move between a first and a second position in relation to the cylinder end. The lever is configured to engage the threaded member when the threaded member is in the first position, and interfering contact between the threaded member and the lever causes the lever to be retained on the cylinder end. The lever can be removed from the cylinder end when the threaded member is in the second position.