Automatic Circulation Shooting Mechanism With Detachable Barrel

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional automatic shooting mechanisms face issues with carbon residue corrosion, unstable rate of fire, and inflexible barrel replacement, which require frequent maintenance and limit tactical flexibility.

Innovation Solution

An automatic circulation shooting mechanism that includes a gun body assembly, a detachable gun barrel assembly with a barrel spring system, a bolt assembly with a cam slot and pin for locking and unlocking, and a recoil spring assembly to buffer recoil and facilitate quick barrel replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed barrel is adopted by conventional automatic rifles, then the structural simplicity is maintained, but the tactical flexibility and quick replacement capability are lost

Engineering Contradiction:
Improvetactical flexibilityVSAvoidbarrel replacement mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The barrel assembly is segmented into a barrel, a barrel extension, and a barrel fixing cap that can be detachably engaged with the barrel frame. This segmentation allows the barrel to be quickly replaced by simply detaching the barrel fixing cap, providing tactical flexibility without requiring complex replacement mechanisms.

Inventive Principle:
Principle #1Segmentation

2Productivity

If gas operation is used to drive the automatic shooting mechanism, then the automatic circulation is achieved, but carbon residue corrosion and maintenance requirements increase

Engineering Contradiction:
Improveautomatic circulation shootingVSAvoidcarbon residue corrosion
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The harmful gas introducing device is extracted and separated from the barrel assembly. The gas introducing device is configured to be detachably engaged with the barrel, allowing it to be removed independently. This extraction prevents carbon residue from affecting the barrel and bolt carrier, reducing corrosion and maintenance requirements while maintaining automatic circulation shooting capability.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If rebound balance blocks are added to prevent incomplete locking, then the locking reliability is improved, but the device complexity and carbon accumulation increase

Engineering Contradiction:
Improvelocking actionVSAvoidrecoil spring seat structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Instead of adding rebound balance blocks to the recoil spring seat to prevent incomplete locking, the invention inverts the approach by making the gas introducing device detachable. This allows the system to achieve reliable locking through the natural recoil operation while enabling easy removal of the gas introducing device to prevent carbon accumulation issues, thereby improving reliability without increasing device complexity.

Inventive Principle:
Principle #13The other way round (Inversion)

4Stability of the object's composition

If a barrel spring system is implemented for recoil buffering, then the recoil vibration is reduced, but the device complexity increases

Engineering Contradiction:
Improverecoil vibrationVSAvoidbarrel spring assembly
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The barrel spring is integrated directly onto the barrel, with one end connected to the barrel and the other end connected to the barrel frame. This merging of the spring system with the barrel structure provides recoil buffering and reduces vibration while maintaining a relatively simple overall device complexity, as the spring becomes an inherent part of the barrel assembly rather than a separate complex mechanism.

Inventive Principle:
Principle #5Merging (Combining)

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 mechanism allows for quick barrel replacement, reduces recoil-induced vibrations, and enhances the efficiency of automatic circulation shooting operations by minimizing maintenance needs and improving tactical flexibility.

Implementation Method 1

The barrel spring possesses elasticity whereby the barrel is inserted into the barrel frame, moved by recoil force, and rebounded to its original position automatically.

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the instant recoil caused by the pressure of the gunpowder gas of the gas-operated rifle is only absorbed by a recoil spring

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12209831B2Automatic circulation shooting mechanism
Publication Date: 2025.01.28 SUN HUAI-KU
  • US12209831B2 patent drawing
  • US12209831B2 patent drawing

AI summary

An automatic circulation shooting mechanism includes a gun body assembly, a gun barrel assembly, a bolt assembly, a recoil spring assembly, a triggering assembly, and a cartridge feeding assembly. Regarding the gun body assembly, a barrel fixing cap can separate from a barrel frame, so the gun barrel assembly mounted in the barrel frame can be replaced. The gun barrel assembly includes two barrel spring fixing seats disposed on a barrel, a barrel spring therebetween and a barrel extension. The barrel extension and a breech bolt of the bolt assembly are engaged for locking while shooting to allow the barrel and the breech bolt to recoil together by a linear freedom motion and affect the barrel spring, a bolt spring of the bolt assembly, and the recoil spring assembly for absorbing, storing, and releasing energy, thereby buffering recoil force of the shooting efficiently and attaining an automatic circulation shooting effect.