Fiber Optic Adapter Assembly Locking Housing Design

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Solution Overview

Problem

Fiber optic connectors in network environments face challenges with robustness and ease of handling due to minimal space between adjacent connectors, making insertion and removal difficult.

Innovation Solution

A fiber optic connector assembly design featuring a connector housing, locking housing, and a movable boot with adapter engagement features, allowing for secure engagement and disengagement with an adapter housing, facilitated by locking retention features and sealing elements to enhance robustness and ease of connection/disconnection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional fiber optic connectors are used, then the connectors can be installed in network environments, but the minimal space between adjacent connectors makes insertion and removal difficult and reduces robustness

Engineering Contradiction:
Improveease of insertion and removalVSAvoidconnector assembly structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connector assembly is divided into distinct functional modules: a connector housing containing the optical interface, a locking housing with retention features, and a boot with engagement features. This segmentation allows each component to perform its specific function independently, enabling easy insertion and removal while maintaining a manageable overall structure suitable for minimal spacing environments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connector housing is inserted into the locking housing, which is then inserted into the adapter housing. This nested arrangement consolidates multiple connector functions into a compact hierarchical structure, reducing the overall footprint between adjacent connectors while maintaining ease of operation through the outermost locking interface.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If robust locking mechanisms are added to enhance connector robustness, then connection reliability improves, but the complexity of the connector assembly increases

Engineering Contradiction:
Improveconnection reliabilityVSAvoidconnector assembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking housing incorporates retention features that automatically engage with the connector housing upon insertion, providing self-locking functionality. The boot's forwardly-extending adapter engagement feature similarly self-engages with the adapter housing. This self-service locking mechanism enhances connection reliability without requiring complex external locking devices or multiple operational steps.

Inventive Principle:
Principle #25Self-service

3Strength

If the connector design prioritizes secure engagement, then connection robustness improves, but the ease of disconnection and handling deteriorates

Engineering Contradiction:
Improveengagement strengthVSAvoidease of disconnection
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The locking mechanism employs dynamic retention features that provide strong engagement during normal operation but can be easily released through a simple manual action. The boot is designed to be movable between engaged and disengaged positions, allowing the retention strength to be dynamically adjusted from high (when engaged) to low (when disengaged), thus resolving the contradiction between secure engagement and ease of disconnection.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4006602B1Fiber optic adapter assemblies including an adapter housing and a locking housing
Publication Date: 2025.04.02 CORNING RES & DEV CORP
  • EP4006602B1 patent drawingFigure 1
  • EP4006602B1 patent drawingFigure 2~3
  • EP4006602B1 patent drawingFigure 4~5

AI summary

A fiber optic connector assembly includes a connector housing defining a rotationally-discrete locking portion defined on an outer surface, an adapter assembly selectively coupled to the connector housing, the adapter assembly including an adapter housing defining an adapter front end and an adapter retention member that is positionable between an engaged position, in which the adapter retention member restricts movement of the connector housing with respect to the adapter assembly in an axial direction, and a disengaged position, in which the connector housing is movable with respect to the adapter assembly in the axial direction, and a locking housing positioned between the adapter housing and the connector housing, the locking housing defining a locking front end positionable at least partially within the adapter housing, and a locking retention feature that is engaged with the adapter retention member when the adapter retention member is in the engaged position.