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Novel foldable light emergency cable and implementation method thereof

An emergency optical cable and a technology for its realization, applied in the direction of fiber mechanical structure, etc., can solve problems such as fiber breakage, optical path obstruction, and loose loss of tight-packed optical fibers, etc., and achieve the effect of enhanced adhesion, less wrinkling, and internal compactness

Active Publication Date: 2014-04-09
CHINA ELECTRONICS TECH GRP NO 23 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the emergency optical cable of this structure has the characteristics of softness and repeatability, in the actual use process, the polyester film wrapping layer 3 often breaks after repeated retraction, causing the loose loss of the tightly wrapped optical fiber to increase. When a load is applied in a 180-degree double-fold state or the optical fiber is broken under a very small bending radius, the optical path is blocked

Method used

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  • Novel foldable light emergency cable and implementation method thereof
  • Novel foldable light emergency cable and implementation method thereof
  • Novel foldable light emergency cable and implementation method thereof

Examples

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Embodiment Construction

[0040] Example 1 is shown in Figure 2(a). In Figure 2(a), 1-1 is the bending-resistant tight-clad optical fiber, 1-2 is the core filler, 1-3 is the nylon layer, 1-4 is the aramid fiber reinforcement, and 1-5 is the polyurethane outer sheath. In this embodiment 1, the core 1-2 is formed by extruding a layer of plastic from aramid fiber; in some occasions where the requirements are not high, the core can also be replaced by optical fiber. Reinforcement members 1-4 can also be made of reinforcement materials such as glass fiber, polyparabenzoxazole or carbon fiber.

[0041] Referring to Figure 2(b), the specific implementation process of Example 1 is as follows:

[0042] 1. Optical fiber tightly packed

[0043] A layer of nylon is tightly wrapped around the bending-resistant coated optical fiber, which has the characteristics of low density, low friction coefficient, wide temperature resistance range, and wide processing and molding temperature range.

[0044] Nylon materials ...

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Abstract

The present invention relates to an emergency cable. The problem to be solved is to overcome the problems of the prior art to provide a novel folding lightweight cable and implementation of emergency, in terms of mechanical, environmental and other emergency with existing conventional cable performance is not reduced, the improved performance of the cable resistance to bending and reduced cable diameter and the reduced cable weight. The emergency cable is characterized in that said two optical fibers and a cable used for filling in the 'SZ' twist and simultaneously extruding an outer layer of nylon fiber unit; outer diameter of the optical fiber unit is 0.6mm-2.0mm; in uniformly twisted around reinforcement fiber unit and at the same time strengthening the outer layer of the outer sheath extrusion. The present invention is made of an emergency cable reasonable structure, excellent performance, not only can reduce the outer diameter of the cable is not reduced under the premise of guaranteed performance and reduce the weight of the cable, and can improve the resistance to bending of the cable, and higher productivity.

Description

technical field [0001] The invention relates to the field of optical cables, in particular to emergency optical cables. technical background [0002] Conventional emergency optical cable structures currently on the market are as follows: figure 1 as shown, figure 1 Among them, 1 is a tight-packed optical fiber, 2 is a core filler, 3 is a polyester film wrapping layer, 4 is an aramid fiber, 5 is a polyurethane sheath, and 6 is a central component. Although the emergency optical cable of this structure has the characteristics of softness and repeated retractability, in the actual use process, the polyester film wrapping layer 3 often breaks after repeated retraction, causing the loose loss of the tightly-wrapped optical fiber to increase. When a load is applied in the 180-degree double-fold state or the optical fiber is broken under a very small bending radius, the optical path is blocked. Contents of the invention [0003] The problem to be solved by the present inventi...

Claims

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Application Information

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IPC IPC(8): G02B6/44
Inventor 王宏伟朱有财徐春伟戎亮于秀丽徐洲
Owner CHINA ELECTRONICS TECH GRP NO 23 RES INST
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