Fiber Optic Fast Coupling With Quarter-Turn Ferrule Alignment
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Solution Overview
Problem
Existing fiber optic connection systems face challenges in achieving fast and robust coupling mechanisms that minimize signal losses while being compatible with existing connectors and adapters.
Innovation Solution
A fiber optic connector with partial threaded portions and an adapter assembly featuring a twist-to-lock mechanism, allowing for quick assembly with an angle less than a full rotation, and a bayonet connection mechanism with a floating ferrule alignment, ensuring secure engagement and reduced signal loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a threaded locking mechanism is used to secure the fiber optic connector to the adapter, then the engagement strength is improved, but the coupling time increases due to requiring multiple turns for engagement
Solution Approach 1:
The threaded engagement mechanism is segmented into multiple discrete engagement points (first threaded portion, second threaded portion, third threaded portion) around the circumference of the connector. This allows the connector to engage the adapter at multiple locations simultaneously or in sequence with reduced rotation, achieving both strong engagement and fast coupling.
Solution Approach 2:
Instead of requiring a full 360-degree rotation for threaded engagement, the invention uses partial threaded portions that engage with corresponding nut portions after only a fraction of a rotation (e.g., 90 degrees or less). This partial action achieves sufficient engagement strength while dramatically reducing coupling time.
2Loss of time
If a bayonet connection mechanism is used for quick coupling, then the coupling time is reduced, but the engagement robustness decreases compared to threaded connections
Solution Approach 1:
The invention merges the advantages of both bayonet and threaded connection mechanisms into a single hybrid system. The bayonet-style quarter-turn engagement provides quick coupling, while the integrated threaded portions and nut portions provide robust mechanical engagement and precise alignment, combining the speed of bayonet with the strength of threaded connections.
3Strength
If multiple adapters are installed on an enclosure wall with traditional threaded mechanisms, then the engagement strength is sufficient, but the space required between adapters increases to accommodate tools for tightening
Solution Approach 1:
The threaded engagement portions are designed to engage with only a fraction of a rotation (partial action), eliminating the need for multiple full turns. This allows the connector to be secured with minimal rotation, reducing the space required between adapters and eliminating the need for tools during installation.
Solution Approach 2:
The quarter-turn threaded mechanism is designed to be self-aligning and self-engaging, where the threaded portions automatically find and engage with the corresponding nut portions during the rotation process. This self-service characteristic eliminates the need for external tools or complex alignment procedures, reducing the space required between adapters.
4Manufacturing precision
If a floating ferrule alignment mechanism is used, then the alignment precision is improved, but the device complexity increases
Solution Approach 1:
The floating ferrule alignment mechanism is nested within the adapter housing, with the ferrule holder positioned to float freely within the adapter body. This nested configuration allows the ferrule to self-align with the connector's ferrule through elastic deformation of the holder, achieving precise alignment without adding external alignment mechanisms or increasing overall device complexity.
Data Source
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AI summary
A fiber optic connection system includes a fiber optic connector and an adapter assembly. The fiber optic connector is coupled to the adapter assembly with a fast coupling mechanism. The fast coupling mechanism allows the fiber optic connector to be mounted into the adapter assembly with rotation of the fiber optic connector relative to the adapter assembly less than a full turn.