A new type of folding-resistant light emergency optical cable and its realization method
An emergency optical cable and the technology of the realization method, which is applied in the direction of fiber mechanical structure, etc., can solve the problems of blocked optical path, loose loss of tight-packed optical fiber, increased fiber breakage, etc., and achieve the effect of not easy to wrinkle, enhanced adhesion, and compact interior
Active Publication Date: 2016-08-31
CHINA ELECTRONICS TECH GRP NO 23 RES INST
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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
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[0040] Such as Figure 2(a) Example 1 shown. Figure 2(a) Among them, 1-1 is the bending-resistant tight-packed 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] see Figure 2(b) , the specific implementation process of the present embodiment 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.
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The present invention relates to emergency optical cables. The problem to be solved is to overcome the problems existing in the prior art, to provide a new type of folding-resistant light emergency optical cable and its realization method, in terms of machinery and environment, compared with the existing conventional emergency optical cable, the overall performance will not be reduced. Under the circumstances, the bending resistance of the optical cable is improved, the outer diameter of the optical cable is reduced and the weight of the optical cable is reduced. It is characterized in that: the optical cable adopts two optical fibers and a filler core to carry out "SZ" stranding, and at the same time extrude a layer of nylon to make the optical fiber unit; the outer diameter of the optical fiber unit is 0.6mm-2.0mm; Strand the reinforcement evenly around and extrude an outer sheath over the reinforcement at the same time. The emergency optical cable made by the invention has reasonable structure and excellent performance, not only can reduce the outer diameter of the optical cable and reduce the weight of the optical cable without reducing the performance, but also can improve the bending resistance of the optical cable, and the production efficiency is higher.
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 inventio...
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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