Fluid Connector Locking Mechanism With Piston-Driven Auto Coupling

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Solution Overview

Problem

Existing connection systems between male and female parts require significant human effort for repeated disconnection and connection, which slows down operations and poses safety risks due to the need for manual intervention.

Innovation Solution

A connection system utilizing a piston-driven mechanism with return means and blocking means to enable automatic and secure disconnection and connection, reducing human effort by using stored energy for repeated cycles and ensuring secure locking through geometric design and fluid pressure control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual disconnection and connection operation is used, then the connection system is simple in structure, but the operation speed is slow and human effort is required

Engineering Contradiction:
Improveoperation speedVSAvoidconnection system structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The connection system employs a movable drive part with a piston that can dynamically transition between connection and disconnection positions. The piston is selectively pressurizable to drive the drive part between these positions, enabling automatic operation without manual intervention and significantly improving operation speed while maintaining controlled complexity through dynamic actuation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates return means that automatically return the drive part to the connection position after disconnection. This self-service mechanism eliminates the need for continuous manual operation, allowing the system to reset itself and prepare for the next connection cycle, thereby improving productivity without proportionally increasing complexity.

Inventive Principle:
Principle #25Self-service

2Reliability

If manual disconnection and connection operation is used, then the device structure is simple, but the safety of surrounding personnel is compromised

Engineering Contradiction:
Improvesafety of surrounding personnelVSAvoidconnection system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system replaces manual mechanical operation with automated piston-driven actuation. The movable drive part is selectively pressurizable to drive automatic connection and disconnection, eliminating human exposure to potential safety hazards while maintaining a relatively simple overall structure through the use of standard pneumatic/hydraulic actuation mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If automatic connection and disconnection with piston is used, then human effort is minimized, but energy consumption increases

Engineering Contradiction:
Improvehuman effortVSAvoidenergy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The piston is selectively pressurizable only when needed to drive the drive part between connection and disconnection positions, rather than continuous pressurization. The return means automatically return the drive part to the connection position, creating a periodic action pattern that minimizes energy consumption while maintaining ease of operation through automated actuation.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The return means recover and store energy by automatically returning the drive part to the connection position after disconnection. This energy recovery mechanism reduces the overall energy consumption of the system while maintaining minimal human effort, as the system reusesthe energy from each actuation cycle.

Inventive Principle:
Principle #34Discarding and recovering

4Reliability

If secure locking mechanism is implemented, then connection reliability is improved, but device complexity increases

Engineering Contradiction:
Improveconnection securityVSAvoidlocking mechanism structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking function is merged with the drive part itself. The drive part is designed with integrated locking capability where it can be positioned to lock the male part in the female part during connection. This merging of functions eliminates the need for separate locking mechanisms, improving connection security while maintaining relatively simple device structure.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The movable drive part serves multiple functions: it drives the connection, provides locking capability, and enables disconnection. This multi-functionality reduces the need for additional components, achieving secure locking without proportionally increasing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 system allows for quick, secure, and repeatable disconnection and connection of male and female parts with minimal human effort, enhancing operational efficiency and safety by automating the connection process and reducing energy consumption.

Implementation Method 1

The piston (48) is arranged inside the actuation chamber (14) and is selectively pressurizable to drive the part (24) trained by the part (24) between one of the positions among the connection position and the disconnection position

Methodology Applied
Scientific EffectFluid pressure: Pressure Increase

Implementation Method 2

the return means store the energy when the piston is pressurized, which advantageously reduces the duration of a connection-disconnection cycle, the return means then automatically restoring this energy during the reverse connection operation or the case disconnection

Methodology Applied
Scientific EffectElastic potential energy storage: Spring

Data Source

PatentEP3626426B1Connection system for connecting two devices with a fluidic communication between the two devices
Publication Date: 2021.10.13 PARKER HANNIFIN MANUFACTURING FRANCE SAS
  • EP3626426B1 patent drawingFigure 1~26
  • EP3626426B1 patent drawingFigure 2~6
  • EP3626426B1 patent drawingFigure 7~10

AI summary

This system (1) comprises a male part (2), a female part (4), a drive element (24) having a spool portion (26) with a radial bore (28), a radially movable drive member (30) within the radial bore (28), a cavity (34), and a radial projection (40). The drive element (24) is translationally movable between a disconnected position of the male and female parts and a connected position of the male and female parts. The drive element (24) includes a piston (48) sliding in an actuating chamber (14) under the effect of a pressure force. The piston (48) is attached to the spool portion (26) so as to move the drive element (24) to one of the connected or disconnected positions under the effect of the pressure force. The system (1) further includes control means for triggering the application of pressure force on the piston (48).