Buffer Tube Assembly Pivoting Mechanism for Firearm Folding
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Solution Overview
Problem
There is a need for improved designs in firearms that allow for the reduction of length to facilitate easier carrying and storage, while maintaining functionality, as existing folding mechanisms may not adequately address the alignment and locking of buffer tube assemblies with bolt carrier groups.
Innovation Solution
A system comprising a first and second hinge portion, a lock, and a carrier blocking assembly that enables the buffer tube assembly to pivot relative to the firearm's receiver, with the lock configurable to secure the assembly in unfolded and folded positions, and the carrier blocking assembly to control rearward movement of the bolt assembly, ensuring proper alignment and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the buffer tube assembly is made foldable to reduce firearm length, then the firearm becomes easier to carry and store, but the alignment and locking mechanism between the buffer tube assembly and bolt carrier group becomes more complex
Solution Approach 1:
The buffer tube assembly is divided into separable components including the buffer tube, buffer, and buffer spring assembly that can be folded independently relative to the receiver, allowing the firearm to be broken down into manageable sections for compact storage while maintaining functional integrity when assembled
Solution Approach 2:
The hinge mechanism enables the buffer tube assembly to dynamically transition between extended and folded positions, with the locking mechanism providing stable fixed positions during operation. This dynamic capability allows the firearm to adapt between compact storage configuration and functional firing configuration
2Length of moving object
If the buffer tube assembly is folded to reduce length, then compactness is improved, but the functionality and operational reliability may be compromised
Solution Approach 1:
The locking mechanism is designed to automatically engage and secure the buffer tube assembly in its extended position before firing operations begin, ensuring proper alignment and functional reliability. The preliminary locking action prevents any potential misalignment or movement during operation
Solution Approach 2:
The hinge mechanism acts as an intermediary component that smoothly transitions the buffer tube assembly between folded and extended positions, while the locking mechanism serves as a mediator to ensure secure positioning. These intermediary elements protect the reliability of the system by preventing direct, uncontrolled movement between components
3Stability of the object's composition
If a locking mechanism is added to secure the buffer tube assembly in position, then alignment stability is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is merged with the hinge mechanism into an integrated assembly, where the locking components are incorporated within the hinge structure itself. This combination reduces the number of separate parts and simplifies the overall design while maintaining stable alignment of the buffer tube assembly
Solution Approach 2:
The locking mechanism serves multiple functions: it secures the buffer tube assembly in the extended position, maintains proper alignment during firing, and works in conjunction with the carrier blocking assembly to prevent unintended movement. This multi-functionality reduces the need for additional separate components
Data Source
AI summary
A firearm assembly includes an upper receiver housing a bolt carrier group that is translatable within the upper receiver, and a lower receiver including a first hinge portion defining a first hinge opening. A second hinge portion is pivotally connected to the first hinge portion, and a buffer assembly is attached to the second hinge portion. A carrier block is positioned within the first hinge portion and is configurable in a blocking configuration and an unblocking configuration. A lock is configurable in a latched position and an unlatched position, and the lock is in mechanical communication with the carrier block when the lock is in the latched position. The carrier block is positioned in the unblocking configuration when the lock is in the latched position, and the carrier block is positioned in the blocking configuration when the lock is in the second position.