Oval Cable Entry Port Sealing for Uncut Fiber Cables
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Solution Overview
Problem
Existing methods for sealing uncut telecommunication cables in oval ports of telecommunication enclosures are messy and difficult to use, and there is a need for improved methods to provide a reliable seal that prevents environmental ingress.
Innovation Solution
A port entry device with a tubular housing and a split sleeve, featuring resilient arms for secure mounting, a split sleeve for cable retention, and clamping nuts to compress an internal sealing member, providing a watertight or water-resistant seal for telecommunication cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mastic or split grommet sealing devices are used to seal ports where uncut cables must be accessed mid-span, then a seal can be provided, but the process becomes messy and difficult to use in the field
Solution Approach 1:
The sealing device is divided into multiple components: a port insert with sealing elements, a cable management section with troughs, and a closure section. This segmentation allows each component to perform its specific function independently, making the overall device easier to install while maintaining reliable sealing through the coordinated action of the segmented parts.
Solution Approach 2:
The port insert is pre-assembled with sealing elements and cable management features before installation. The resilient arms are pre-positioned to engage with the port walls, and the internal sealing members are pre-installed in the correct positions. This preliminary assembly eliminates the need for messy field applications of mastic and simplifies the installation process.
2Adaptability or versatility
If a single oval port structure is used for uncut cables to enter and leave, then cable access is provided, but reliable sealing around two portions of uncut cable becomes difficult
Solution Approach 1:
The port insert incorporates different sealing mechanisms at different locations: resilient arms for port wall engagement, internal sealing members for cable contact, and grommet options for specific cable portions. Each sealing element is positioned and designed to address the specific sealing needs at that particular location within the port, enabling reliable sealing around uncut cables while maintaining cable access capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively seals telecommunication enclosures, preventing dust, bugs, and other foreign substances from entering while securely retaining cables, with easy assembly outside the enclosure.
Implementation Method 1
The housing comprises a pair of resilient arms located on opposing sides of the housing near the first end. Each of the arms comprises at its end a latch structure for engaging with an edge of a port in a telecommunication enclosure to securely retain the port entry device when fully inserted.
Implementation Method 2
clamping nuts to compress an internal sealing member, providing a watertight or water-resistant seal for telecommunication cables
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
A port entry device is described for inserting a telecommunication cable containing optical fibers into a telecommunications enclosure. In particular, the port entry device is an oval port sealing device. The port entry device includes a tubular housing, a split sleeve and a pair of clamping nuts. The tubular housing has an interior passageway between a first end of the housing and a second end of the housing. The interior passageway can include a first cable channel and a second cable channel. The housing can have an elliptical cross section. The split sleeve positions the telecommunication cable within the port entry device when the split sleeve is inserted into the interior passageway of the housing. The clamping nuts are attachable to the second end of the housing to secure the split sleeve within the housing.