Quick Connector Latch Verification Using Scannable Code

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Solution Overview

Problem

Conventional quick connectors often fail to ensure proper latching connections, leading to leaks and failed connections due to misalignment or incomplete locking of components.

Innovation Solution

A quick connector design that incorporates a scannable code, readable by a scanning device, which becomes visible only when the latch member is fully engaged, verifying the proper installation and latching of the pipe.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional quick connectors are used without verification mechanisms, then the device complexity is low, but the reliability of the connection is poor leading to leaks and failed connections

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

Solution Approach 1:

A code reader device serves as an intermediary between the quick connector components and the verification system. The code reader scans codes on the connector components and provides feedback on proper assembly, allowing verification without adding mechanical complexity to the connector itself

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces mechanical verification methods (visual inspection, tactile confirmation) with an optical/electronic system using scannable codes and code readers. This substitution provides more reliable verification while keeping the mechanical connector design simple

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

2Measurement precision

If no verification method is provided, then the ease of operation is high, but the measurement precision of latching status is poor

Engineering Contradiction:
Improvelatching status verificationVSAvoidoperation simplicity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The quick connector components themselves carry the verification information through codes printed or attached to them. The system serves itself by embedding the verification data in the components, eliminating the need for external verification tools or complex procedures

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Physical inspection of latching status is replaced with optical scanning of codes. The code reader uses light and image processing to determine connection status, providing precise measurement without requiring manual disassembly or complex mechanical indicators

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

3Productivity

If manual inspection methods are used to verify connection, then the device complexity is low, but the productivity is reduced due to time-consuming verification processes

Engineering Contradiction:
Improveconnection verification efficiencyVSAvoidverification system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Manual visual and tactile inspection is replaced with automated optical code scanning. The code reader quickly captures and processes code images to determine connection status, dramatically reducing verification time while keeping the added system complexity minimal

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

Solution Approach 2:

The physical state of the connection is copied into a machine-readable code format. Instead of directly inspecting the physical connection, the system reads a code that represents the connection status, enabling rapid automated verification

Inventive Principle:
Principle #26Copying

Data Source

PatentEP3943795B1Quick connector latch verification utilizing multi-part scannable code
Publication Date: 2025.05.14 COOPER STANDARD AUTOMOTIVE INC
  • EP3943795B1 patent drawingFigure 1
  • EP3943795B1 patent drawingFigure 2~3
  • EP3943795B1 patent drawingFigure 4~5

AI summary

This disclosure relates to a quick connector adapted to display a code that verifies that a latch member is engaged to retain an installed pipe to the quick connector. The quick connector comprises a connector body 11 having a receiving portion 12 surrounding an internal passage 16, the internal passage 16 arranged to receive the pipe 7 therein. A latch member 30 retained on the receiving portion 12 is arranged to be movable between a pipe insertion position and a latched position. In the pipe insertion position, the latch member 30 allows the pipe 7 to be inserted into the internal passage 16. A code readable by a scanning device becomes readable when the latch member 30 is moved to the latched position verifying that the pipe 7 is installed and latched in the connector body 11.