Fiber Optic Connector Actuation Lock for Premature Boot Movement

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Solution Overview

Problem

Existing fiber optic connectors with movable boots can prematurely actuate other elements during shipping, handling, or installation, compromising the functionality of the connector due to deformation of clamping members, especially in field-installable connectors like the NPC+ connector.

Innovation Solution

A fiber optic connector design featuring an actuation element with a base and a lever that prevents the boot from moving to a forward position in the installed state, allowing for controlled actuation of clamping members by removing the actuation element after the cable optical fiber is inserted, ensuring proper mechanical splicing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the boot is made movable to actuate clamping members, then strain relief function is improved, but premature actuation during shipping or handling occurs

Engineering Contradiction:

Improvestrain relief functionVSAvoidinstallation process

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The actuation element is pre-installed on the connector body in a position that prevents the boot from moving forward during shipping and handling. This preliminary positioning ensures the boot remains in the rearward position until intentional actuation during installation, preventing premature clamping member engagement while maintaining the strain relief function when needed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The actuation element serves as an intermediary mechanism between the boot and the clamping members. It controls the boot's movement by blocking the boot's forward motion until the actuation element is removed or actuated, thereby mediating between the strain relief function and preventing premature actuation during handling and installation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the boot is prevented from moving, then premature actuation is prevented, but the boot cannot actuate clamping members for strain relief

Engineering Contradiction:

Improveconnector functionalityVSAvoidboot movement capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The actuation element is pre-positioned to block the boot's forward movement during shipping and handling. When installation is required, the actuation element is removed or actuated, allowing the boot to move forward and engage the clamping members. This preliminary positioning provides both prevention of premature actuation and enables strain relief function when needed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system transitions from a static state (boot blocked by actuation element) to a dynamic state (boot free to move). The actuation element provides a controllable mechanism that allows the boot to remain stationary during handling and then move forward during installation, providing adaptability between preventing premature actuation and enabling strain relief function.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the actuation element is always removed, then the boot can move freely for strain relief, but premature actuation during shipping or handling occurs

Engineering Contradiction:

Improveboot movementVSAvoidconnector function

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The actuation element is pre-installed on the connector body in a position that blocks the boot from moving forward during shipping and handling. This preliminary action prevents premature actuation of the clamping members. When installation is required, the actuation element is removed or actuated, allowing the boot to move forward and engage the clamping members for strain relief.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The actuation element serves as an intermediary that controls the boot's movement. It blocks the boot's forward motion during handling and shipping, then can be removed or actuated to allow the boot to move forward during installation. This intermediary mechanism balances the need to prevent premature actuation with the need to enable strain relief function when needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4398014B1Fiber optic connector with actuation element and method of installing the same

Publication Date: 2026.05.13 CORNING RES & DEV CORP

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AI summary

A fiber optic connector comprises a connector body having a front end and a back end, a boot having a rear portion extending beyond the back end of the connector body, and an actuation element received over at least the rear portion of the boot. The actuation element prevents the boot from moving from a rearward position relative to the connector body to a forward position relative to the connector body, but is also removable from the boot to allow such movement. Methods of installing fiber optic connectors with actuation elements and movable boots are also disclosed.