Cable Termination Assembly with Disengagement Prevention
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Solution Overview
Problem
Outside plant (OSP) enclosures face challenges in protecting and optimizing the configuration of antenna units, kiosk terminals, and fiber optic distribution equipment due to limited space and complex interconnections, leading to poor sealing and premature component failures.
Innovation Solution
An optical fiber cable and termination unit assembly with a housing, patch panel terminal, input and output optical fibers, and a seal assembly, including coupling elements that form watertight seals to secure the fibers and prevent bending stresses, ensuring optimal configuration and protection within OSP enclosures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple components (antenna units, kiosk terminals, fiber optic distribution equipment) are interconnected within an OSP enclosure, then fiber optic distribution functionality is added, but the enclosure complexity increases and available space is reduced
Solution Approach 1:
The patent divides the hybrid arrangement into separate functional modules: an antenna unit module containing antenna elements and electronic components, and a fiber optic distribution module containing splitters, multiplexers, and patch panels. These modules are interconnected through standardized interfaces, allowing independent installation, maintenance, and replacement of each module without affecting the entire system.
Solution Approach 2:
The patent introduces intermediate coupling elements and transition components that bridge the antenna unit module and fiber optic distribution module. These intermediaries include fiber optic cables with connectors, adapter panels, and sealing components that facilitate reliable optical signal transmission while maintaining physical separation between electronic and optical subsystems.
2Adaptability or versatility
If multiple components are interconnected within an OSP enclosure, then fiber optic distribution functionality is added, but the available space is reduced
Solution Approach 1:
The patent utilizes three-dimensional space optimization by mounting components on vertical walls and ceilings of the enclosure rather than only on horizontal surfaces. Fiber optic cables are routed through cable management channels and conduits that utilize the vertical dimension, maximizing the use of available enclosure volume while maintaining proper cable bending radii and separation distances.
Solution Approach 2:
The patent employs nested cable management structures where fiber optic cables are bundled within protective conduits, which are in turn routed through cable trays and mounting channels integrated into the enclosure structure. This nesting approach minimizes the space required for cable routing and component installation.
3Reliability
If components are configured in a hybrid arrangement with limited space, then enclosure protection is provided, but poor sealing occurs leading to premature failures
Solution Approach 1:
The patent employs flexible sealing gaskets and elastomeric sealing rings at all interface points between modules and the enclosure. These flexible sealing elements conform to the mating surfaces, accommodating minor manufacturing tolerances and thermal expansion differences, thereby maintaining effective seals that protect against moisture and environmental contaminants.
Solution Approach 2:
The patent incorporates pre-installed sealing components and protective coatings on all exposed surfaces of modules before installation. The enclosure itself is designed with integrated sealing features such as grooves for gaskets, drainage paths, and ventilation filters that prevent harmful factors from entering the enclosure in the first place.
4Reliability
If components are configured in a hybrid arrangement with limited space, then enclosure protection is provided, but bending stresses on cables occur leading to premature failures
Solution Approach 1:
The patent incorporates cable routing guides, bending radius maintainers, and stress relief loops into the module designs during the preliminary configuration stage. Fiber optic cables are pre-positioned within protective conduits and routed through designated pathways that ensure adequate bending radii are maintained throughout the installation process, preventing cable damage before it occurs.
Solution Approach 2:
The patent employs cable protection elements such as foam padding, rubber grommets, and flexible conduits at all points where cables may be subjected to mechanical stress. These cushioning elements are installed beforehand to absorb and distribute mechanical loads, protecting the fiber optic cables from bending stresses, crushing forces, and repeated flexing that could lead to premature failures.
Data Source
AI summary
An optical fiber termination system includes a housing, a cable, and a catch. The housing defines a portion of a passageway and a surface surrounding the passageway. The passageway defines a central axis and the surface defines an interior of the housing. The cable is receivable through the portion of the passageway. The cable includes an optical fiber and defines a longitudinal axis. The catch is receivable in the housing and attachable to and extendable from the cable in a direction transverse to the longitudinal axis such that the catch limits movement of the cable in a direction away from the interior of the housing when the catch is received in the housing and the cable is received through the portion of the first passageway.