Firearm Stock Collapsible Housing Locking Mechanism
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Solution Overview
Problem
Collapsible firearm stocks often experience noticeable movement or 'rattle' relative to the receiver, which can lead to reduced accuracy and increased portability issues due to lack of stability and ergonomic adjustments.
Innovation Solution
A positionable stock system featuring an elongated receiver extension tube with a housing that slides and locks into multiple positions, utilizing pivoting levers and dual locking members to eliminate wobble and allow for adjustable length of pull, enhancing ergonomics and portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a collapsible stock is used to improve portability and storage, then the firearm becomes more compact, but noticeable movement or rattle occurs relative to the receiver
Solution Approach 1:
The stock is designed with a collapsible structure that allows it to transition between extended and retracted positions. The dynamic locking mechanism engages at specific positions to maintain stability while allowing movement between positions, resolving the contradiction between compactness and stability.
Solution Approach 2:
The stock is divided into multiple segments that can move relative to each other. The collar and locking mechanism create distinct functional zones that allow controlled movement while maintaining structural integrity and minimizing rattle during use.
2Adaptability or versatility
If a collapsible stock structure is implemented to enable compact storage, then portability is improved, but the stock exhibits noticeable movement relative to the adapter
Solution Approach 1:
The locking mechanism provides dynamic stabilization, locking the stock at specific positions during use and allowing controlled movement during storage. This ensures reliability when needed while maintaining adaptability for compact storage.
Solution Approach 2:
The collar acts as an intermediary component between the stock and adapter, providing a controlled interface that maintains reliable connection while allowing the stock to be positioned for compact storage when not in use.
3Ease of operation
If the stock is made adjustable for ergonomic improvements, then user comfort is enhanced, but the complexity of the locking mechanism increases
Solution Approach 1:
The locking mechanism is designed to be self-regulating, automatically engaging and disengaging at predetermined positions without requiring complex external controls. This provides ergonomic adjustability while keeping the mechanism relatively simple through self-contained operation.
Solution Approach 2:
The mechanism uses dynamic locking at multiple positions along the receiver extension tube, allowing ergonomic adjustment while maintaining a relatively simple overall structure through the use of a single collar that interacts with multiple locking positions.
Data Source
AI summary
Disclosed is an adjustable, sliding stock, and a rifle to which the stock attaches. The stock includes an elongated receiver extension tube coupled to the rifle, and a housing slidably coupled with the receiver extension tube. The housing is positionable at one of a plurality of locking positions that are disposed along a length of the receiver extension tube. The receiver extension tube defines a longitudinal axis along which the housing is positionable. The housing includes a pair of pivoting levers, each of the pair of pivoting levers being disposed on a lateral side of the housing, and where each of the pivoting levers is coupled to and actuates one of a pair of locking members. Each of the pair of locking members travels along a common axis into and out of locking engagement with the receiver extension tube, and where the common axis is transverse to the longitudinal axis.