Snap-Lock Fluid Coupling Collar for Secure Releasable Sealing

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Solution Overview

Problem

Existing fluid handling systems require fluid couplings that can easily and securely connect fluid flow paths while providing a secure but releasable connection, especially for systems that provide fluid cooling for heat-generating devices like computer hardware.

Innovation Solution

The fluid coupling devices utilize a male and female coupling mechanism with a collar and collet structure, allowing for easy snap-together connection and secure locking through a collar that slides between unlocked and locked positions, providing audible and tactile feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a secure locking mechanism is used to prevent premature disconnection, then connection reliability is improved, but device complexity increases

Engineering Contradiction:
Improveconnection reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is segmented into modular components: a collar with collet structure, radially inward-extending projections, and interaction with circumferential recesses in the male coupling. This segmentation allows each component to perform a specific function while maintaining overall simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The collar and collet structure are nested around the male coupling, with the collet structure containing radially inward-extending projections that fit into circumferential recesses. This nested arrangement provides secure locking without requiring separate complex mechanisms

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of operation

If a releasable connection mechanism is used to allow easy disconnection, then ease of operation is improved, but connection reliability deteriorates

Engineering Contradiction:
Improveease of disconnectionVSAvoidconnection reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The collar is designed to be movable along the longitudinal axis, transitioning between locked and unlocked positions. The dynamic nature of the collar allows easy disconnection by sliding it to the unlocked position, while maintaining reliable connection when locked

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The mechanism provides tactile feedback through the engagement of radially inward-extending projections with circumferential recesses, and audible feedback through clicking sounds during engagement/disengagement, confirming the connection state to the user

Inventive Principle:
Principle #23Feedback

3Reliability

If a complex locking mechanism is used to prevent vibration effects, then connection reliability is improved, but ease of manufacture deteriorates

Engineering Contradiction:
Improvevibration resistanceVSAvoidease of manufacture
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The collar and collet structure are designed to automatically self-lock through the interaction of radially inward-extending projections with circumferential recesses. The spring-loaded collet structure self-adjusts to maintain engagement, eliminating the need for complex additional locking components

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4204727B1Fluid couplings
Publication Date: 2025.11.19 COLDER PRODUCTS CO
  • EP4204727B1 patent drawingFigure 1~2
  • EP4204727B1 patent drawingFigure 3~5
  • EP4204727B1 patent drawingFigure 6~8

AI summary

This document describes fluid coupling devices for fluid handling systems. For example, some embodiments described in this document relate to fluid coupling devices that snap together, and are then secured to each other using a collar and collet mechanism. Some fluid coupling devices described herein are well suited for use in systems that provide fluid cooling for heat generating devices such as computer hardware. The fluid coupling devices described herein are also suitable for many other uses.