Firearm Accessory Coupling with Resilient Lock

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Solution Overview

Problem

Existing firearm accessory mounting systems require multiple steps and can loosen during operation, making them difficult to mount quickly with one hand and prone to unintentional detachment.

Innovation Solution

A coupling system with equal numbers of threaded and unthreaded portions, arranged at specific angles, and a resilient lock element with a protruding part that snaps into recesses to secure the connection, allowing for quick and secure attachment and detachment with one-hand axial and rotational movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional accessory mounting systems are used, then the accessory can be mounted on the firearm barrel, but the mounting process requires multiple steps and cannot be easily accomplished with one hand

Engineering Contradiction:
Improveease of mountingVSAvoidmounting time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The coupling device is divided into a female member with threaded portions and a male member with corresponding threads, allowing the accessory to be segmented into modular components that can be independently mounted and adjusted on the firearm barrel

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling device incorporates a resilient lock element that can dynamically transition between locked and unlocked states, enabling quick one-handed operation where the accessory can be rapidly mounted or dismounted by simply pushing the lock element to release the threading engagement

Inventive Principle:
Principle #15Dynamics

2Reliability

If traditional accessory mounting systems are used, then the accessory can be attached to the barrel, but the coupling may loosen unintentionally during operation

Engineering Contradiction:
Improveattachment reliabilityVSAvoidoperation simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The resilient lock element is pre-positioned to engage with the threaded portions of the male and female members, creating a preliminary locking action that prevents unintentional loosening during firearm operation while maintaining the ability for intentional quick release when needed

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The coupling device uses self-locking threaded portions where the threads themselves provide the locking mechanism, eliminating the need for separate locking components or complex fastening procedures while maintaining secure attachment during operation

Inventive Principle:
Principle #25Self-service

3Reliability

If a secure locking mechanism is implemented, then the coupling prevents unintentional loosening, but the device complexity increases

Engineering Contradiction:
Improvecoupling securityVSAvoidmechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking function is merged with the threading structure itself, where the threaded portions of the male and female members serve both the fastening and locking functions simultaneously, eliminating the need for separate locking mechanisms and reducing overall device complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The coupling device employs self-locking threaded portions that automatically secure the accessory during operation without requiring external locking components, and the resilient lock element serves multiple functions including positioning, locking, and enabling quick release, thereby simplifying the overall mechanism

Inventive Principle:
Principle #25Self-service

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

Enables rapid and secure mounting of firearm accessories without unintentional loosening during operation, ensuring reliable attachment and detachment with a simple and intuitive mechanism.

Implementation Method 1

a resilient lock element and corresponding recesses wherein the resilient lock element engages and disengages from the recesses

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3705835B1A coupling
Publication Date: 2022.05.04 A TEC HOLDING AS
  • EP3705835B1 patent drawingFigure 1
  • EP3705835B1 patent drawingFigure 2
  • EP3705835B1 patent drawingFigure 3~7

AI summary

The present invention relates to a coupling for quick and easy attachment and detachment of a firearm accessory to a muzzle of a firearm, the coupling comprising a female member and a male member, where the female member is provided with a throughgoing bore and further is provided with a number of successive threaded portions and unthreaded portions around a circumference of the throughgoing bore, wherein the male member around an outer circumference is provided with the same number of successive threaded portions and unthreaded portions as the female member, the female member further being provided with a groove arranged around an outer circumference of the female member and a through-going slit extending from the groove to an end of the female member, the male member being provided with a number of recesses arranged around an outer circumference of the male member, a resilient lock element being arranged in the groove.