Fiber Termination Box Sealing and Slack Management Layout
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Solution Overview
Problem
Existing telecommunications cable termination boxes lack efficient management of cable slack, sealing, and configuration flexibility, as well as security features for fiber optic cables.
Innovation Solution
A wall-mountable telecommunications cable termination box with an inner tray that manages cable slack, includes sealed input and output ports, supports various configurations through knockouts, and features a tamper-proof fastener, while accommodating fiber optic splices, splitters, connectors, and adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cable slack is stored in a confined termination box, then cable management is simplified, but cables may suffer sharp bends causing damage
Solution Approach 1:
The termination box is divided into functional zones: a sealed housing for connections and a separate expandable slack management area. This segmentation allows cables to be managed in distinct regions - connections in the confined sealed space and slack in the expandable area with bend protection features.
Solution Approach 2:
The cable slack management extends beyond the two-dimensional plane of the termination box by creating a three-dimensional expandable space. This additional dimension provides volume for cable loops and bends without increasing the box's footprint, preventing sharp bends while maintaining compact installation.
2Reliability
If the termination box has a sealed interior, then environmental protection is improved, but technician access for working on connections becomes difficult
Solution Approach 1:
The termination box incorporates a dynamic hinged cover that can be opened to provide technician access to the sealed interior. The hinge mechanism allows the cover to swing open while maintaining the sealed design, enabling easy access for installation and maintenance without compromising the seal integrity when closed.
Solution Approach 2:
The hinged cover acts as an intermediary element between the sealed interior and the external environment. It provides a controlled transition state during opening/closing operations, allowing technicians to access the sealed space while maintaining the seal's protective function when closed.
3Ease of manufacture
If the inner tray is fixed in position, then assembly is simplified, but technician access to fiber connections is limited in confined spaces
Solution Approach 1:
The inner tray is designed with sliding or removable features that allow it to be dynamically repositioned or extracted from the termination box. This dynamic capability enables technicians to access fiber connections on the tray even when the box is in a confined installation location, while the tray can still be easily assembled into the box during manufacturing.
Data Source
AI summary
A telecommunications cable termination box is wall mountable. An interior holds fiber optic splices, fiber optic connectors and adapters, and blown fiber tubes. The interior of the box is sealed. The box has an outer housing and an inner tray. The outer housing includes a hinged cover, snaps for holding the cover to the base, and a seal between the cover and the base, and a tray flange of the tray. Cable slack is managed in the interior to avoid sharp bends of the cables. The cable input ports and output ports are sealed by grommets. Different grommets can be provided depending on the number of cables and the cable sizes. The inner tray can hold gas block seal devices that seal the ends of the blown fiber tubes.