Hydraulic Connector with Threaded Nut for Leak-Tight Quick Assembly

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Solution Overview

Problem

Existing hydraulic connection fittings for automotive systems are structurally complex, prone to leakage, and vulnerable to external stresses or vibrations, leading to inefficient and costly assembly processes.

Innovation Solution

A connector for quick assembly of hydraulic systems featuring a male and female connection element with a threaded nut for secure anchoring, combined with spring-loaded closing and opening means to ensure leak-tight sealing and efficient fluid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional hydraulic connection fittings are used, then the system can be assembled, but the assembly process is complex and time-consuming requiring multiple components and a purge and fill process

Engineering Contradiction:
Improveassembly speedVSAvoidnumber of components
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into a single integrated connector design. The male and female connection elements are designed to work together as a unified system that simultaneously provides sealing, anchoring, and fluid transfer capabilities, eliminating the need for separate sealing elements and reducing the overall component count while maintaining assembly simplicity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connector is pre-filled with hydraulic fluid during manufacturing under appropriate conditions. This preliminary action ensures that when the connector is assembled into the hydraulic system, the fluid is already in place, eliminating the need for a complex purge and fill process during assembly, thereby significantly improving assembly speed and productivity

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If bayonet anchoring systems are used, then quick connection is achieved, but the connection is vulnerable to external stresses and vibrations

Engineering Contradiction:
Improveconnection speedVSAvoidresistance to external stresses
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The anchoring system incorporates a threaded nut that can be rotated to progressively tighten and secure the connection. This dynamic adjustment capability allows the connection to be firmly anchored against external stresses and vibrations while still enabling quick assembly and disassembly when needed, balancing ease of operation with reliability

Inventive Principle:
Principle #15Dynamics

3Reliability

If mechanical valves with resilient springs are used, then sealing is achieved, but the device complexity increases

Engineering Contradiction:
Improvesealing performanceVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates unnecessary intermediate components from the sealing mechanism. By designing the male and female connection elements to work together as an integrated system with built-in sealing surfaces, the design removes the need for separate mechanical valves and resilient springs, thereby maintaining sealing reliability while significantly reducing device complexity

Inventive Principle:
Principle #2Taking out (Extraction)

4Ease of operation

If standard screwed hydraulic unions are used, then connection is achieved, but leakage occurs and pressure resistance is limited

Engineering Contradiction:
Improveassembly simplicityVSAvoidleakage resistance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connector utilizes composite construction with a crimped sleeve design that combines metal components for structural strength and sealing surfaces for leak-free operation. This composite approach allows the connector to withstand higher pressures and resist leakage better than standard screwed unions while maintaining assembly simplicity through the integrated design

Inventive Principle:
Principle #40Composite materials

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 faster and more reliable assembly of hydraulic systems, maintaining the system bled without leakage or air ingress, while reducing component count and cost, and withstanding higher pressures than standard connectors.

Implementation Method 1

spring-loaded closing and opening means movable longitudinally along said first passage

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4549797A1Connector for quick assembly of hydraulic systems
Publication Date: 2025.05.07 J JUAN SA
  • EP4549797A1 patent drawingFigure 1~2
  • EP4549797A1 patent drawingFigure 3~4
  • EP4549797A1 patent drawingFigure 5~6

AI summary

A connector for quick assembly of hydraulic systems, comprising a male connection element, a female connection element, and anchoring means (4) configured to anchor the male connection element to the female connection element in a connected position (C). The connection elements further comprising closing and opening means (22, 32) configured to allow a fluid to flow in the connected position (C), and to seal the connection elements in a disconnected position of the connector (1). The anchoring means (4) comprise a threaded nut (41) located on the male connection element, wherein said threaded nut (41) is freely rotatable around an axial direction (X) for being coupled to a thread (38) disposed on the female connection element to securely anchor the male connection element to the female connection element in the connected position (C).