Paraclip Adapter Movable Tabs for Secure QD Mounting

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Solution Overview

Problem

Traditional QD bodies for firearms are large, heavy, and vulnerable to detachment under severe forces, necessitating a lighter, smaller, and more reliable coupling mechanism for sling adapters.

Innovation Solution

A wedging adapter design with movable contact tabs that change the effective outer diameter of a connection post, allowing for semi-permanent attachment to a QD socket, preventing unintentional detachment and reducing size and weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional QD bodies are used for sling attachment, then the coupling mechanism is reliable, but the adapter becomes large and heavy

Engineering Contradiction:

Improvecoupling reliabilityVSAvoidadapter weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The adapter is divided into multiple components: a connection post with contact tabs, a retention member with engagement arms, and a compression spring. This segmentation allows each component to perform its specific function efficiently while keeping the overall adapter compact and lightweight, eliminating the need for large traditional QD bodies.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The retention member is positioned within the connection post structure, with engagement arms that fold or retract when not in use. The compression spring is housed within the connection post cavity. This nesting arrangement minimizes the adapter's external dimensions and weight while maintaining reliable coupling functionality.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If traditional QD bodies are used for sling attachment, then the coupling mechanism is secure, but the adapter becomes vulnerable to detachment under severe forces

Engineering Contradiction:

Improveattachment securityVSAvoidresistance to detachment force

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The compression spring is pre-loaded to continuously apply outward force on the contact tabs, ensuring they remain engaged with the QD socket under all operating conditions. This preliminary action prepares the coupling mechanism to resist detachment forces before they occur, preventing unintentional release during severe forces or dynamic operations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The retention member features movable engagement arms that can dynamically adjust their position. These arms are biased by the compression spring to maintain constant contact with the QD socket, allowing the adapter to adapt to varying force conditions while maintaining secure attachment, thereby preventing detachment under severe forces.

Inventive Principle:

Principle #15Dynamics

3Reliability

If traditional QD bodies are used, then the adapter provides secure coupling, but it increases the effective outer diameter and reduces compactness

Engineering Contradiction:

Improvecoupling securityVSAvoidadapter volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #7Nested doll (Nesting)

4Ease of operation

If quick detach interface is used for rapid sling removal, then ease of operation is improved, but vulnerability to unintentional detachment increases

Engineering Contradiction:

Improvesling removal speedVSAvoidaccidental detachment risk

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9482487B2Paraclip adapter

Publication Date: 2016.11.01 MAGPUL INDUSTRIES

AI summary

An adapter for a QD socket is disclosed. The adapter has a connection post having a plurality of tabs movable relative to each other between a first configuration and a second configuration. The first configuration defines a maximum effective outer diameter of the connection post, and the second configuration defines a minimum effective outer diameter of the connection post. A method of modifying a quick disconnect attachment is also disclosed.