Multi-axis Adjustable Buttstock with Interchangeable Spacers
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Solution Overview
Problem
Commercial gun stocks are not customizable to fit individual shooters' anatomies, particularly in terms of stock length, drop, cast, trigger finger alignment, and recoil pad positioning, which can affect shooting dynamics and comfort.
Innovation Solution
A multi-axis adjustable buttstock design that allows for adjustments in length of pull, drop, cast, tilt, trigger grip length, recoil pad slant, and recoil pad position using rotating components, tapered washers, and interchangeable spacers, made primarily of aluminum for durability and weather resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If commercial gun stocks are made with fixed dimensions to simplify manufacturing, then ease of manufacture is improved, but adaptability to different shooters' anatomies deteriorates
Solution Approach 1:
The buttstock is divided into multiple adjustable segments including the comb assembly, recoil pad assembly, and grip length components. Each segment can be independently adjusted to modify the overall stock dimensions, allowing customization for different shooters while maintaining a standardized base manufacturing process.
Solution Approach 2:
The stock incorporates dynamic adjustment mechanisms that allow the shooter to modify fixed dimensions in the field. The comb assembly can be adjusted vertically and angled, the recoil pad can be repositioned along the stock axis, and grip length can be modified using interchangeable spacers, transforming a static stock into a dynamically adaptable component.
2Adaptability or versatility
If multiple adjustment mechanisms are added to customize the stock fit, then adaptability is improved, but device complexity increases
Solution Approach 1:
Multiple adjustment functions are merged into integrated assemblies. The comb assembly combines vertical adjustment, angular adjustment, and lateral positioning capabilities within a single integrated unit. The recoil pad assembly merges length adjustment with angular adjustment features, reducing the number of separate mechanisms needed.
Solution Approach 2:
The adjustment mechanisms are designed with universal features that perform multiple functions. The threaded rod and nut assembly serves both as a length adjustment mechanism and as a mounting structure. The comb assembly's adjustment mechanisms can accommodate different comb styles and configurations, providing multi-functionality across various shooting applications.
3Manufacturing precision
If precise adjustments are enabled for optimal fit, then shooting accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The adjustment mechanisms are pre-configured with indicator systems and reference marks that guide the shooter to optimal settings. The comb assembly includes pre-marked adjustment positions corresponding to common head sizes and shooting styles, allowing quick selection without requiring precise measurement skills. The recoil pad assembly includes pre-positioned mounting holes for common length-of-pull dimensions.
Solution Approach 2:
The adjustment system is designed to be self-regulating with built-in stop mechanisms and detent systems that prevent over-adjustment and ensure repeatable positioning. The threaded connections include built-in locking features that maintain precision settings without requiring additional tools or complex securing procedures, allowing the shooter to make and maintain precise adjustments independently.
Data Source
AI summary
A multi-axis adjustable buttstock is taught that incorporates a buttstock, having, a grip neck, and a butt along with an interfaced set of two serrated grip retainers attached onto the buttstock grip neck, for buttstock tilt adjustment. A plurality of selectable flat and tapered grip spacers engage the grip serrated retainers for trigger grip length, cast and drop adjustment of the buttstock. A flanged stock bolt is disposed through a portion of the buttstock retaining the spacers and grip retainers while being embraced tightly by a first lock ring. A threaded rod is inserted into the buttstock a desired distance for length of pull adjustment and a second threaded lock ring is positioned on the threaded rod for securement. A recoil pad adapter plate, having a plurality of concentric holes, is attached to the threaded rod, for recoil pad slant adjustment, and a recoil pad is attached to the adapter plate aligned with selected recoil pad holes for recoil pad height and angle adjustments.