Formfitting Loose Tube With Deformation Induction Tabs
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Solution Overview
Problem
Optic fiber cables face issues with water ingress and vulnerability to mechanical forces, particularly in dry cables, which lack the protective gel filling of gel-filled cables, leading to potential damage and communication quality degradation.
Innovation Solution
The use of formfitting loose tubes with deformation induction tabs that induce elastic deformation under external stress, combined with a ripcord system for easy handling, addresses the need for improved water blockage and mechanical resistance, while eliminating empty spaces that allow water ingress and enhancing handling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dry cable construction is used to eliminate gel, then handling efficiency and cleanliness are improved, but water ingress resistance and mechanical force tolerance deteriorate
Solution Approach 1:
The patent employs a dry filler material that forms a flexible, form-fitting structure within the cable, eliminating the need for gel while maintaining water ingress resistance. This flexible structure adapts to the cable's geometry and provides protection without the messy handling characteristics of gel-filled cables.
Solution Approach 2:
The invention uses composite materials combining dry filler substances with structural elements to create a multi-functional component that simultaneously provides water blocking, mechanical protection, and space-filling properties without requiring gel compounds.
2Ease of operation
If dry cable construction is used to eliminate gel, then handling efficiency and cleanliness are improved, but mechanical force tolerance deteriorates
Solution Approach 1:
The dry filler material is designed to provide mechanical cushioning and protection against compression, bending, and twisting forces while maintaining a clean, non-gel formulation that is easier to handle during installation and maintenance operations.
3Reliability
If empty space is reduced in dry cable, then water ingress resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The dry filler material is designed to conform to the cable's internal geometry, automatically eliminating empty spaces and voids that could allow water ingress. This form-fitting approach simplifies manufacturing by eliminating the need for complex sealing structures or additional components.
4Strength
If cable is made more rigid to resist mechanical forces, then mechanical force tolerance is improved, but flexibility and ease of handling deteriorate
Solution Approach 1:
The dry filler material provides mechanical protection while maintaining cable flexibility, allowing the cable to be bent and routed as needed during installation without compromising its ability to resist external mechanical forces such as compression and crushing.
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 solution effectively reduces water ingress and mechanical damage, improves handling and manufacturing efficiency, and enhances the durability and performance of optic fiber cables by providing better resistance to external forces and kinking.
Implementation Method 1
The plurality of deformation induction tabs induces elastic deformation of the loose tube wall under external stress
Data Source
AI summary
The present disclosure provides a formfitting loose tube for optic cables. The formfitting loose tube includes a loose tube wall. The loose tube wall includes first sides, second sides, a plurality of deformation induction tabs and a plurality of fiber optics stacked together having a shape form. The plurality of deformation induction tabs includes curving sections. The curving sections intersect the first sides and the second sides at intersections. The first sides and the second sides of the loose tub wall are configured to fit the shape form of the plurality of fiber optics stacked together. The plurality of deformation induction tabs induces elastic deformation of the loose tube wall under external stress.