Hydraulic Recoil Buffer Assembly for Firearms
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Solution Overview
Problem
Existing recoil absorption technologies for firearms do not effectively address the discomfort and fatigue caused by recoil energy, particularly in firearms with fixed or collapsible stocks, as they either require specific bolt and carrier assembly movements or lack adjustability in resistance levels.
Innovation Solution
A hydraulic recoil buffer assembly that includes an end cylinder with a hydraulic shock absorption system and adjustable orifice restricted fluid flow passages, providing both mechanical and hydraulic resistance to recoil, suitable for fixed or collapsible stocks, with a combination of coil springs and fluid chambers to manage recoil energy absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing recoil absorption devices are used in firearms with fixed or collapsible stocks, then the bolt and carrier assembly can move within the receiver extension tube, but the device complexity increases and adaptability decreases
Solution Approach 1:
The invention makes the receiver extension tube movable relative to the stock instead of fixed, allowing the tube to recoil rearward with the bolt and carrier assembly. This dynamic configuration enables the hydraulic buffer to function effectively in both fixed and collapsible stock firearms without requiring the tube to remain stationary.
Solution Approach 2:
The hydraulic buffer assembly is designed to be universally applicable to both fixed and collapsible stock configurations. The movable receiver extension tube and hydraulic buffer system can accommodate different stock types and firearm calibers, providing adaptable recoil management without requiring design modifications.
2Device complexity
If fixed or collapsible stock configurations are used, then the firearm structure is simplified, but existing recoil absorption devices cannot be effectively implemented
Solution Approach 1:
The receiver extension tube is designed to move rearward during recoil instead of being fixed to the stock. This dynamic arrangement allows the tube to follow the bolt and carrier assembly's rearward motion, enabling effective recoil energy absorption through the hydraulic buffer while maintaining simple fixed or collapsible stock structures.
3Object-affected harmful factors
If hydraulic resistance is increased to reduce recoil impact, then shooter discomfort is reduced, but the resistance to bolt and carrier assembly movement increases
Solution Approach 1:
The hydraulic buffer provides progressive resistance that increases with the rate and extent of piston displacement. During rapid recoil movement, high hydraulic resistance dissipates energy and reduces shooter impact. During slower return movement, resistance decreases to allow smooth operation. This dynamic resistance characteristic resolves the contradiction between recoil mitigation and operational smoothness.
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 hydraulic recoil buffer assembly effectively dissipates recoil energy by combining mechanical and hydraulic resistance, providing adjustable resistance levels to reduce shooter discomfort and fatigue, accommodating different calibers and stock configurations.
Implementation Method 1
a hydraulic shock absorption assembly operatively associated with the end cylinder to produce a hydraulic resistance to a rearward movement of the end cylinder during recoil of the firearm
Implementation Method 2
at least one coil spring to provide preload and return the recoil buffer to a battery position
Data Source
AI summary
A hydraulic recoil buffer assembly for a firearm having a receiver and a fixed or collapsible stock assembly including an end cylinder adapted to be secured to the pistol grip or receiver of the firearm and slidably translatable with respect to the extension tube, and a hydraulic shock absorption assembly operative to produce a hydraulic resistance to a rearward movement of the end cylinder during recoil of the firearm. The hydraulic shock absorption assembly has an orifice restricted fluid flow passage and a piston head that compresses a return spring as the end cylinder moves rearward against a recoil coil spring. The recoil buffer assembly stores a portion of the recoil energy through compression of the recoil spring and the return spring, and dissipates a portion of the recoil energy through the resistance provided by fluid flow through the orifice restricted flow passage.