Hose Connector Plug Arrangement for Automated Pre-Assembly

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Solution Overview

Problem

Existing hose-pipe connectors are difficult to handle during assembly and are not suitable for automatic assembly lines, lacking a mechanism to securely hold components together until final assembly with the hose and pipe.

Innovation Solution

A connector arrangement comprising a front and rear tubular member with an O-ring and a plug that securely holds the components together, allowing for easier handling and assembly, including a pressure test before final assembly, and facilitating automatic assembly line processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional connectors are assembled by inserting the connector into the hose and then pushing the pipe into the through-bore, then the connector can be assembled with basic components, but the connector is difficult to handle during assembly and not suitable for automatic assembly lines

Engineering Contradiction:
ImproveEase of handling during assemblyVSAvoidLack of holding mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by providing a holding mechanism that secures the connector components together before final assembly with the hose and pipe. This preliminary securing action makes the connector easier to handle during assembly and suitable for automatic assembly lines, as the components are pre-positioned and held in place rather than requiring manual manipulation during the assembly process

Inventive Principle:
Principle #10Preliminary action

2Extent of automation

If the connector components are held together securely until final assembly, then automatic assembly line processing is facilitated, but the connector structure becomes more complex

Engineering Contradiction:
ImproveSuitability for automatic assembly lineVSAvoidConnector structure
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The holding mechanism performs preliminary action by securing components together in advance, enabling automatic assembly line processing. The mechanism is designed to be simple yet effective, providing the necessary holding function without excessive structural complexity

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The holding mechanism acts as an intermediary element between the connector components and the final assembly process. It temporarily secures the components together and is later removed or discarded after serving its purpose, facilitating automation without permanently increasing the connector's structural complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

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 enables easier handling and assembly of connectors, ensuring secure sealing and facilitating automatic assembly, while allowing for pressure testing and efficient packaging and shipping.

Implementation Method 1

a sealing element in the form of an O-ring seal

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3884196B1Connector arrangement
Publication Date: 2026.04.08 OETIKER SCHWEIZ AG
  • EP3884196B1 patent drawingFigure 1~4

AI summary

A connector having an outer surface for engagement by a hose, an inner through-bore (13) for receiving a pipe nipple to be connected to the hose, and sealing means (12) for sealing the hose to the pipe nipple, characterised by a plug (15) having a shaft (16) adapted to be inserted into the through-bore (13) and an end disc (17) for closing an end of the through-bore (13) in a non-installed condition of the connector.