Optical Fiber Drop Interface Box Cable Management
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Solution Overview
Problem
The storage and organization of pre-connectorized optical fiber cables at customer premises are challenging due to excess cable length, strain, and damage from bending, particularly in multi-dwelling residential buildings where individual fiber connections need to be managed efficiently.
Innovation Solution
A drop interface box (DIB) with integrated slack storage compartments, hinged fiber storage panels, spools, cable clips, and cable channels that maintain cable separation and minimum bend radius, allowing for easy addition of cables and preventing strain and damage during transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pre-connectorized optical fiber cables are used, then installation speed and ease of operation are improved, but excess cable length and difficulty in storage and organization worsen
Solution Approach 1:
The patent implements nested storage where distribution cables are wound on spools that are placed inside the enclosure, with feeder cables stored in separate compartments. The hinged panel provides access to these nested storage areas, allowing organized storage of excess cable length while maintaining easy access during installation
Solution Approach 2:
The patent utilizes three-dimensional space within the enclosure by implementing vertical stacking of spools and cables on the hinged panel, and by creating multi-level storage compartments. This dimensional organization allows efficient storage of excess cable length without compromising installation accessibility
2Adaptability or versatility
If multiple individual fiber connections are managed in multi-dwelling buildings, then network coverage and adaptability are improved, but cable organization and strain management worsen
Solution Approach 1:
The patent divides the cable management system into distinct segments: distribution cables are managed separately on spools, feeder cables are routed through dedicated channels, and adapter panels provide separate connection points. This segmentation allows each cable type to be organized independently, reducing overall complexity while supporting multiple dwelling units
Solution Approach 2:
The patent introduces intermediary components including adapter panels that serve as intermediate connection points between feeder and distribution cables, and cable management channels that mediate the transition between different cable routing paths. These intermediaries simplify the organization of multiple fiber connections across different dwelling units
3Ease of operation
If cable storage and routing are simplified, then ease of operation is improved, but cable protection from bending damage and strain worsens
Solution Approach 1:
The patent employs curved cable paths and rounded cable guides throughout the enclosure, ensuring that cables follow smooth arcs rather than sharp angles. The spools provide continuous curved surfaces for winding distribution cables, and the cable management channels are designed with gentle bends, protecting cables from bending damage while maintaining simple storage
Solution Approach 2:
The patent implements strain relief features and cable protection elements at critical points before cables can be damaged. Cable clamps and guides are positioned to prevent excessive tension, and the enclosure design includes built-in cable protection that cushions cables against strain and bending damage before installation or during use
Data Source
AI summary
Disclosed are exemplary embodiments of a drop interface box (DIB) for interfacing between an optical network service provider's heavy jacketed drop cable and optical distribution cables at a premises. The DIB provides organized drop, feed and distribution fiber cable storage and routing in a manner which does not cross different cables types when additional cables are added, and which maintains minimum bend radius of the cables and inhibits cable strain. In exemplary embodiments, a hinged fiber storage panel includes spools, cable clips and integrated cable channels that maintain cable radius during transitions of cables from a storage side or plane of the panel to a connector side or plane of the panel.