KR20020007508A - Optical fiber and copper pair Hybrid cable - Google Patents

Abstract

PURPOSE: A method of manufacturing a combination cable of optical fiber and copper wire is provided to simplify separation of an optical fiber tube from a copper unit by positioning the optical fiber tube and the copper unit in parallel. CONSTITUTION: Copper wires are coated with plastic such as polyethylene or polypropylene and spirally twisted into at least 4 pairs. The copper wire pairs are applied with coats such as Polyvinyl Chloride(PVC), fire retardant polyethylene and common polyethylene. The copper wire pairs are divided into two units, and the units are connected via a web(14). Optical fiber tubes are inserted into gaps between the copper wire units. Each of the optical fiber tubes includes an optical fiber(15) inserted into a tube(17) and a water proof composite(16) filled into the tube. A lip cord wire(19) is inserted onto the optical fiber tube. A combination unit of optical fiber/copper wire is shelled.

Description

Optical fiber and copper pair hybrid cable

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid cable of an optical fiber and a copper pair, and more particularly, to a cable structure and a method of manufacturing the cable having improved cable handling and branching properties.

1 is a schematic diagram of a composite cable of a conventional optical fiber and copper wire pair, wherein the composite cable of the optical fiber and copper wire pair is located in a sheath of a copper cable, and the copper wire pair is twisted around an optical fiber tube or a center tensile line, so that the cable sheath is separated. Difficulties arise in handling and protecting copper wire units.

In general, the composite cable of the optical fiber and copper wire pair should have excellent branching of the copper wire part and the optical fiber part. For the conventional fiber and copper wire composite cable, the composite cable of the optical fiber and copper wire pair is centered around the tube containing the optical fiber. As a twisted structure, there is a problem that it is difficult to branch the optical fiber portion and the copper wire part.

In order to solve the above problems, the composite cable of the optical fiber and copper wire pair of the present invention is a composite cable of the optical fiber and copper wire pair, which is arranged so that the optical fiber tube is parallel to the copper unit so that the branching of the optical unit and the optical fiber tube is convenient. It is an object to provide a manufacturing method.

In order to achieve the above object, the present invention is a copper wire having a predetermined number or more coated with a plastic of polyethylene or polypropylene, braided at least a predetermined number of pairs of braided copper wires and then vinyl chloride (PVC) or flame retardant thereon And a web in which the copper wire pair divided into a unit of a predetermined number or more is coated with a general polyethylene coated web, and one or more optical fibers in contact with the copper wire pair sheath are filled with a waterproof composite of a jelly composite or a waterproof powder. A tube extruded into a composite such as PBT, polypropylene, polyethylene, and the like, an optical fiber tube and a plastic interposed between the gaps of the finished copper unit, if necessary, and a lip cord yarn inserted on the optical fiber tube to facilitate peeling; The composite unit of the optical fiber copper pair is composed of a system PVC, polyethylene It is characterized by consisting of the outer shell.

The present invention can be protected by the impact and compression from the outside because the optical fiber unit is located between the copper unit grooves.

1 is a composite cable structure diagram of a conventional optical fiber and copper wire pair,

2 is a composite cable structure diagram of an optical fiber and a copper wire pair to which the present invention is applied.

* Explanation of symbols for main parts of the drawings

11 copper wire 12 copper wire coating

13: Copper Wire Pair Unit 14: Web

15 optical fiber 16: waterproof compound

17: tube 18: plastic interposition

19: lip cord yarn 100: cable jacket

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram of a composite cable structure of an optical fiber and a copper wire pair to which the present invention is applied, so that the branching of the copper wire pair and the optical fiber tube is a new structure in which the optical fiber tube is positioned parallel to the copper wire unit in a gap between the copper wire units. Designed.

In the above structure, four or more pairs of spirally braided two or more 0.5 mm diameter copper wires 11 coated with a plastic 12 such as polyethylene () or polypropylene (Polypropylene) are twisted and then chlorinated. A coating (13) of vinyl (polyvinyl chloride, PVC), flame retardant and general polyethylene is applied, wherein the copper wire pair is divided into two or more units, with a web of about 0.7 mm length (Web) ( 14).

The optical fiber tube inserts one or more optical fibers 15 into a tube 17 that is extruded into a compound such as PBT (Polybytylene Terephtalate), Polypropylene, Polyethylene, etc., and the inside of the tube is a jelly composite or waterproof material. It is filled with a waterproofing composite 16 such as powder.

At this time, insert the optical fiber tube between the gap between the finished copper unit and, if necessary, the plastic intervening member 18 such as polyethylene and insert the lip cord yarn 19 over the optical fiber tube to facilitate stripping. The composite unit sheaths the sheath 100 of PVC, flame retardant and general polyethylene.

As described above, the optical fiber and the composite cable of the present invention are used as a copper pair when laying in an indoor communication system, and the optical fiber is stored separately, and the copper pair is replaced by an optical fiber when upgrading to an optical communication system in the future. As a result, the total laying cost can be reduced.

Claims (4)

Copper wire having a predetermined diameter or more coated with polyethylene or polypropylene plastic; At least a predetermined number of pairs of spirally braided copper wires, and then coated with vinyl chloride (PVC) or flame retardant and general polyethylene; A web connecting the copper wire pairs divided into a predetermined number or more units therebetween; A tube for extruding one or more optical fibers in contact with the copper wire pair coating into a composite such as PBT, polypropylene, polyethylene, etc. filled with a waterproof composite of a jelly composite or a waterproof powder; A plastic interposed between the optical fiber tube and the polyethylene inserted as necessary between the gaps of the completed copper unit; A lip cord yarn inserted into the optical fiber tube so that peeling is easy; Composite cable of the optical fiber and copper wire pair, characterized in that the composite unit of the optical fiber copper pair is made of a system PVC, polyethylene. The method of claim 1, wherein the optical fiber and copper unit A composite cable of optical fiber and copper wire pairs, each having its own outer shell structure. The method of claim 2, wherein the optical fiber and copper unit A composite cable of optical fiber and copper wire pairs, arranged in parallel without twisting. The method of claim 1, wherein the copper unit Composite cable of a pair of optical fiber and copper wire, characterized in that the optical unit is inserted into the gap combined in parallel.