Coupling Part Axial Actuation for Tool-Free Connector Release

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Solution Overview

Problem

Existing coupling parts for connector assemblies are difficult to handle and require additional tools for releasing the plug-in part, due to complex structures and the need for lateral space to move locking elements into their release position.

Innovation Solution

A coupling part with a coaxially movable actuating element that widens the locking elements transversely, allowing easy release of the plug-in part without additional tools, featuring a simple structure with fewer components and a spring element connecting the locking elements for automatic locking and unlocking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If locking elements are moved laterally out of the receptacle for release, then the plug-in part can be released, but sufficient lateral space is required and handling becomes difficult

Engineering Contradiction:
Improvehandling of coupling partVSAvoidlateral space required
Core Design Contradiction:
Ease of operationVSArea of stationary object

Solution Approach 1:

The locking elements are moved from lateral displacement to axial displacement. The actuating element moves coaxially to the longitudinal axis of the receptacle, transferring the locking elements from a locking position to a release position along the axial direction rather than laterally, thereby eliminating the need for sufficient lateral space.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Instead of moving the locking elements outward laterally to release the plug-in part, the invention inverts the mechanism by moving the actuating element axially to push the locking elements inward or reposition them axially, achieving release without lateral space requirements.

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

2Ease of operation

If additional tools are used to move locking elements, then release can be achieved, but handling complexity increases

Engineering Contradiction:
Improvetool-free handlingVSAvoidstructure of coupling part
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The actuating element is designed to be directly operable by the user without requiring additional tools. The user can grip and move the actuating element axially to transfer the locking elements between locking and release positions, achieving tool-free operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The actuating element integrates multiple functions: it serves as both the operating interface for the user and the mechanism for transferring the locking elements. The actuating element combines the functions of operation transmission and locking element actuation into a single integrated component.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If locking elements are held in release position, then easy removal is enabled, but additional components are required

Engineering Contradiction:
Improveeasy removal of plug-in partVSAvoidnumber of components
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The locking elements are designed to be dynamically positionable between locking and release positions through axial movement of the actuating element. The system transitions from a static locked state to a dynamic release state without requiring additional components to hold the release position, as the actuating element itself maintains the positional state.

Inventive Principle:
Principle #15Dynamics

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 solution provides simple and tool-free handling, reduces the risk of faults, and allows for easy assembly and disassembly of the coupling part, ensuring a secure and fluid-tight connection while minimizing mechanical stress on sealing components.

Implementation Method 1

The locking elements can be moved into the release position against a resilient restoring force. This has the advantage that they automatically move into their locked position if no actuating force acts on the locking elements.

Methodology Applied
Scientific EffectResilient restoring force: Elasticity

Data Source

PatentEP1969279B1Coupling part for a plug connector arrangement
Publication Date: 2012.11.07 ALFRED KARCHER SE & CO KG
  • EP1969279B1 patent drawingFigure 1
  • EP1969279B1 patent drawingFigure 2
  • EP1969279B1 patent drawingFigure 3

AI summary

The invention relates to a coupling part for a plug connector arrangement, whereby the coupling part comprises a coupling body provided with a receiving element, wherein a plug-in part can be inserted in the direction of the longitudinal axis of the receiving part for producing a fluid-tight connection. The coupling part comprises two locking elements which are arranged at a distance in relation to each other which, in a locking position, enter laterally opposite each other into the receiving element for engaging the plug-in part from underneath and which can be displaced for releasing the plug-in part into a released position. The aim of the invention is to improve the coupling part in such a manner that it is easy to handle and as a result, the coupling part comprises an actuation element which can be displaced in relation to the coupling body. The locking elements can be displaced by displacing the actuation element from the locking position into a released position, wherein there is a greater distance therebetween than in the locked position.