Base Station Alignment Features for Fiber Connector Assembly
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Solution Overview
Problem
Manually positioning ferrules in fiber optic connectors is difficult, leading to inconsistencies and potential damage, which results in poor performance and reliability issues.
Innovation Solution
A system comprising a stub adapter, a base station, and a hand tool that ensures precise alignment and assembly of fiber connectors, including a plug housing, internal brace, and backshell components, using structural features and a hinged cover to maintain alignment and prevent movement during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual positioning of ferrules is used, then operator flexibility is maintained, but positioning accuracy and consistency deteriorate
Solution Approach 1:
The patent introduces a fixture system with alignment features and positioning mechanisms that act as an intermediary between the operator and the ferrules. The fixture includes alignment sleeves, positioning blocks, and clamping mechanisms that guide the ferrules into precise positions, eliminating the need for direct manual positioning while maintaining operator control through the intermediary device.
Solution Approach 2:
The fixture system incorporates self-aligning features such as tapered alignment sleeves and complementary geometric shapes that automatically guide components into correct positions when assembled. The design allows the fixture itself to perform the positioning function through its structural features, reducing reliance on operator skill and consistency.
2Reliability
If manual assembly is used, then equipment cost is reduced, but assembly consistency and reliability deteriorate
Solution Approach 1:
The assembly system is divided into modular components including separate fixtures for different stages of assembly, interchangeable positioning inserts, and segmented clamping mechanisms. This segmentation allows the complex system to be managed through standardized, replaceable modules that can be set up and configured for specific assembly tasks while maintaining overall consistency.
Solution Approach 2:
The patent employs fixtures and jigs as intermediary devices that mediate between the operator's actions and the final assembly outcome. These intermediaries incorporate precision-machined alignment features, positioning stops, and guiding surfaces that ensure consistent results regardless of operator variability, thereby improving reliability without requiring highly sophisticated automated equipment.
3Manufacturing precision
If precise manual positioning is attempted, then positioning accuracy may improve, but assembly time and operator fatigue increase
Solution Approach 1:
The fixture system performs preliminary positioning and alignment actions before the actual assembly operation. Components are pre-loaded into the fixture with predetermined positioning features that automatically establish correct orientations and spacings. This preliminary action eliminates the need for time-consuming manual adjustment during assembly, maintaining both precision and speed.
Solution Approach 2:
The alignment sleeves and positioning features are designed to self-guide components into correct positions through geometric constraints and friction-fit mechanisms. This self-service capability eliminates the need for operator intervention in fine-tuning positions, allowing rapid assembly while maintaining precision through the fixture's inherent guiding features.
Data Source
AI summary
An example system for fiber connector assembly is provided. The system includes an adapter configured to at least partially receive a plug housing subassembly. The system includes a base station configured to receive the adapter, the plug housing subassembly, and a first backshell component. The base station includes structural features designed to align and maintain a position of the plug housing subassembly relative to the first backshell component prior to securing a second backshell component to the first backshell component.