Modular Firearm Stock Bilateral Adjustment Mechanism
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Solution Overview
Problem
Standard firearms stocks do not accommodate variations in user size and shape, leading to potential unsafe and inaccurate operation due to improper fit, and existing adjustable solutions often require tools and are complex.
Innovation Solution
A modular stock assembly with bilaterally operable locking and releasing buttons for easy adjustment of the butt plate and cheek piece, utilizing locking claws, tension springs, and adjustable elements to allow for incremental adjustments without tools, ensuring a customizable fit for users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard fixed stock is used, then the structure is simple and manufacturing is easy, but the fit cannot be customized for different user sizes and shapes
Solution Approach 1:
The stock is divided into multiple adjustable components including the butt plate, cheek piece, and comb assembly, each capable of independent adjustment. This segmentation allows customization of fit without requiring complete redesign of the entire stock structure.
Solution Approach 2:
The stock transitions from a fixed structure to a dynamically adjustable one through multiple adjustment mechanisms. The comb assembly can be positioned at different heights and angles, the cheek piece can be adjusted vertically, and the butt plate can be repositioned, allowing the stock to adapt to different user anatomies.
2Adaptability or versatility
If existing adjustable solutions are implemented, then fit customization is possible, but the adjustment mechanisms require tools and are complex
Solution Approach 1:
The adjustment mechanisms are designed to be user-operable without requiring external tools. The comb assembly includes a release mechanism that allows the user to adjust the comb height and angle by hand, and the cheek piece can be repositioned vertically without tools, enabling quick field adjustments.
Solution Approach 2:
Adjustment mechanisms serve as intermediaries between the user's manual input and the stock components. The release mechanisms and adjustment levers translate simple user actions into precise component repositioning, eliminating the need for complex tool-based adjustment systems.
3Adaptability or versatility
If multiple adjustment mechanisms are added, then fit customization capability increases, but the device complexity and number of parts increases
Solution Approach 1:
Multiple adjustment functions are merged into integrated assemblies. The comb assembly combines height adjustment, angle adjustment, and lateral positioning capabilities within a single integrated unit. The cheek piece adjustment is integrated with the stock structure, reducing the need for separate adjustment mechanisms for each function.
Solution Approach 2:
The adjustment mechanisms are designed to perform multiple functions. The comb assembly's adjustment mechanism handles both height and angle adjustments, while the cheek piece adjustment serves both vertical positioning and lateral alignment. This multi-functionality reduces the total number of separate adjustment mechanisms needed.
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
The modular stock assembly provides a simple and effective means to customize the firearm's fit, enhancing user safety and accuracy by allowing easy adjustment of the butt plate and cheek piece, accommodating various user sizes and shapes without the need for tools.
Implementation Method 1
a tension spring engaging the locking claw to maintain engagement of the locking claw with the adjusting element
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
The present invention relates to a modular stock for a firearm, where the modular stock comprises a foremost stock, an intermediate stock part and a buttstock, and where a butt plate is mounted to the buttstock through a first adjustment device, and a cheek piece is mounted to the buttstock through a second adjustment device, where the first adjustment device comprises a first locking and releasing button, where the first locking and releasing button is bilaterally operable.