Breakdown Adapter Retainer for Firearm Assembly
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Solution Overview
Problem
Current firearm assembly methods, particularly for the AK-47 platform, require difficult and time-consuming rivet installation for securing the front trunnion to the receiver, making disassembly and reassembly inefficient and essentially permanent.
Innovation Solution
The breakdown adapter uses two retainers with protrusions that replace traditional rivets, allowing for easy assembly and disassembly of the firearm by aligning with receiver holes, and includes a picatinny rail for accessory attachment and secure retention, enabling quick and repeated disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rivets are used to secure the front trunnion to the receiver, then a sturdy union is achieved, but the installation becomes difficult and time-consuming
Solution Approach 1:
The retainer is divided into multiple protrusions (typically three per retainer) that correspond to holes in the receiver, distributing the securing function across multiple points rather than requiring a single complex riveting operation. This segmentation allows for easier installation while maintaining structural integrity.
Solution Approach 2:
The retainer acts as an intermediary component between the front trunnion and the receiver, replacing the direct rivet connection. The retainer with its protrusions provides a simplified interface that achieves secure attachment without requiring traditional riveting tools or skills.
2Reliability
If rivets are used to secure the front trunnion, then a permanent attachment is achieved, but disassembly and reassembly become inefficient
Solution Approach 1:
The retainer design enables dynamic reconfiguration of the firearm assembly. The protrusions can be easily inserted and removed from the receiver holes, allowing the assembly to transition between assembled and disassembled states efficiently, unlike permanent rivet connections.
Solution Approach 2:
The retainer system allows for easy discarding of the assembled state and recovering of components for storage or transport. The protrusions can be quickly removed from the receiver holes, enabling rapid disassembly and recovery of the front trunnion and other components without destructive operations.
3Strength
If six rivets are used to secure the front trunnion, then a secure connection is achieved, but the complexity of assembly increases
Solution Approach 1:
Multiple securing functions (originally requiring six separate rivets) are merged into a single retainer component with multiple protrusions. This consolidation reduces assembly complexity by eliminating the need for multiple separate riveting operations while maintaining the secure connection through the distributed protrusion-hole interface.
4Strength
If traditional rivet assembly methods are used, then a sturdy attachment is achieved, but additional riveting tools and skills are required
Solution Approach 1:
The retainer design enables self-service assembly where the protrusions naturally align with and insert into the receiver holes without requiring specialized riveting tools or skills. The component serves its own installation needs through its geometric design, eliminating the requirement for external riveting equipment.
Data Source
AI summary
A breakdown adapter having a retainer. The retainer has a left retainer and a right retainer. The left retainer has a left engaging means and a left retaining means. The right retainer has a right engaging means and a right retaining means. The left engaging means has two or more left protrusions. The right engaging means has two or more right protrusions. The fastener is configured to secure left engaging means to the right engaging means.