Castle Nut Locking Groove for Reusable Firearm End Plates
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Solution Overview
Problem
Traditional anti-loose castle nut solutions for firearms damage the receiver end plate during installation and make it non-reusable, leading to wastefulness and increased costs due to the inability to repeatedly install and remove components.
Innovation Solution
A design featuring a castle nut with a groove and a receiver end plate with a through hole, where a securing device is used to interlock with the groove, preventing the castle nut from loosening without damaging the end plate, allowing for repeated assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional staking method is used to secure the castle nut, then the anti-loose function is achieved, but the receiver end plate is damaged and becomes non-reusable
Solution Approach 1:
A separate securing device acts as an intermediary component between the castle nut and receiver end plate. This securing device is inserted through the receiver end plate and engages with the groove in the castle nut, providing the anti-loose function without requiring direct damage to the receiver end plate itself. The receiver end plate thus serves as a reusable base while the securing device provides the protective staking function.
2Adaptability or versatility
If the castle nut is repeatedly installed and removed, then reusability is improved, but the traditional staking method prevents this due to damage
Solution Approach 1:
The anti-loose function is segmented from the receiver end plate and transferred to a separate securing device. The receiver end plate retains only its fastening function while the securing device provides the anti-loose function through engagement with the groove in the castle nut. This segmentation allows the receiver end plate to be repeatedly installed and removed without damage, as the securing device can be independently adjusted or replaced.
3Reliability
If a groove is added to the castle nut for securing device engagement, then the anti-loose function is improved without damage, but the device complexity increases
Solution Approach 1:
The harmful staking process is extracted from the receiver end plate and relocated to a separate securing device. The groove in the castle nut provides a simple engagement feature for this extracted securing function, allowing the anti-loose mechanism to be implemented without modifying or damaging the receiver end plate structure.
Data Source
AI summary
A castle nut has a groove around an exterior circumference thereof. An end plate has a through hole extending in a direction perpendicular to a longitudinal axis of a firearm. When a buffer tube is threaded onto a lower receiver of the firearm with the buffer tube traversing through the castle nut and the end plate, the castle nut can be screwed in a direction toward the lower receiver to fasten the end plate against the lower receiver. When the end plate is fastened against the lower receiver by the castle nut, the securing device can be screwed into the through hole of the end plate such that a portion of the securing device is engaged with the groove of the castle nut to prevent the castle nut to be loosened by being unscrewed in a direction away from the lower receiver.