Fiber Distribution Module With Sealed Trunk and Breakout Interface
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Solution Overview
Problem
Trunk cables face challenges in breaking out inner cables for connection to outdoor equipment while protecting them from environmental factors.
Innovation Solution
A fiber distribution module with a transition breakout and unsealed module design, where the trunk cable, breakout cables, and transition breakout are individually sealed to protect against outdoor environments, and the unsealed module supports connectors for outdoor use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the trunk cable is broken out into individual inner cables for connection to outdoor equipment, then the adaptability and ease of connection are improved, but the protection from environmental factors deteriorates
Solution Approach 1:
The system is divided into distinct segments: the sealed trunk cable portion and the unsealed breakout cable portion. The trunk cable remains intact and sealed for environmental protection, while individual inner cables are broken out through a transition breakout to connect to outdoor equipment. This segmentation allows simultaneous achievement of connection adaptability and environmental protection.
Solution Approach 2:
The transition breakout acts as an intermediary component between the sealed trunk cable and the unsealed breakout cables. It provides a controlled interface where inner cables can be accessed and connected to outdoor equipment while maintaining the seal integrity of the main trunk cable, thus mediating between the need for connection and environmental protection.
2Object-affected harmful factors
If the entire cable system is sealed to protect from outdoor environments, then the protection from environmental factors is improved, but the ease of operation and maintenance deteriorates
Solution Approach 1:
The cable system is segmented into a sealed trunk cable for environmental protection and an unsealed breakout cable portion for easy access. This allows the majority of the cable system to remain protected while providing accessible connection points for maintenance and operation without compromising the seal integrity of the protected portions.
Solution Approach 2:
The connection and maintenance functions are extracted from the sealed trunk cable by breaking out individual inner cables through the transition breakout. This allows maintenance operations to be performed on the unsealed breakout cables without opening or compromising the sealed trunk cable, thus maintaining environmental protection while enabling ease of operation.
3Object-affected harmful factors
If individual inner cables are protected with separate sealings, then the protection from environmental factors is improved, but the device complexity increases
Solution Approach 1:
Instead of creating complex multi-layer sealings for individual cables, the system uses simple segmentation with a clear distinction between the sealed trunk cable and unsealed breakout cables. Each segment has its own appropriate sealing level, avoiding the need for complex combined sealings while providing adequate protection.
Solution Approach 2:
Different parts of the cable system have different sealing qualities appropriate to their function. The trunk cable has high-level sealing for environmental protection, while the breakout cables are intentionally unsealed for accessibility. This local differentiation of sealing quality provides effective protection where needed without adding unnecessary complexity elsewhere.
Data Source
AI summary
A cable distribution module comprises an unsealed module that includes a base, a cover, and one or more outdoor connectors. The cover is attachable to the base to define an interior of the unsealed module. The cover includes a trunk end cap having at least one hole configured to receive a trunk cable and extending into the interior of the unsealed module; The cover includes one or more breakout end caps oriented at an angle away from a normal of the base. Each breakout end cap includes one or more openings extending into the interior of the unsealed module. The outdoor connectors are supported in openings of the breakout end caps, and provide connection points for exterior cabling.