KR100899036B1 - Optical fiber cable - Google Patents

Optical fiber cable Download PDF

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KR100899036B1
KR100899036B1 KR1020070103698A KR20070103698A KR100899036B1 KR 100899036 B1 KR100899036 B1 KR 100899036B1 KR 1020070103698 A KR1020070103698 A KR 1020070103698A KR 20070103698 A KR20070103698 A KR 20070103698A KR 100899036 B1 KR100899036 B1 KR 100899036B1
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optical fiber
coating
fiber cable
sheath
center
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KR1020070103698A
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Korean (ko)
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KR20090038282A (en
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안보영
정윤석
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글로벌광통신 (주)
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/22Cables including at least one electrical conductor together with optical fibres
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • G02B6/4432Protective covering with fibre reinforcements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/183Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath

Abstract

본 발명은 광섬유 케이블에 관한 것으로서, 광전송매체가 되는 복수개의 광섬유 요소와, 광섬유 요소들을 둘러싸며 광섬유 케이블의 최외곽에 배치되는 피복과, 피복의 중심을 기준으로 180°로 이격된 제1 및 제2위치 상에만 피복 내에 실장되는 제1 및 제2인장선을 구비하고, 광섬유케이블은 중심에 위치되는 중심 인장선을 포함하지 않는다. 이러한, 광섬유케이블에 의하면, 피복 내에 삽입할 수 있는 광섬유요소의 집적율을 증가시킬 수 있으면서도, 시공시의 절단을 위한 작업성을 향상시킬 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber optic cable, comprising: a plurality of optical fiber elements serving as an optical transmission medium, a sheath surrounding the optical fiber elements and disposed at the outermost portion of the optical fiber cable, and first and second spaced 180 ° from the center of the sheath. The first and second tensile lines are mounted in the sheath only on two positions, and the optical fiber cable does not include a central tensile line located at the center. According to such an optical fiber cable, it is possible to increase the integration rate of the optical fiber element that can be inserted into the coating, and to improve the workability for cutting during construction.

광섬유케이블, 피복, 인장선, 광섬유 Fiber optic cable, sheath, tension wire, optical fiber

Description

광섬유 케이블{optical fiber cable}Optical fiber cable

본 발명은 광섬유 케이블에 관한 것으로서, 상세하게는 전체적인 외경을 줄이면서도 피복 탈피시의 절단효율을 높일 수 있도록 된 광섬유 케이블에 관한 것이다.The present invention relates to an optical fiber cable, and more particularly, to an optical fiber cable capable of increasing the cutting efficiency during stripping while reducing the overall outer diameter.

일반적으로 관로 상에 설치되는 광섬유케이블은 다수의 광섬유가 피복에 에워싸여진 구조로 되어 있다. 이러한 광섬유케이블은 관로 포설시의 포설 강도를 고려하여 높은 인장 강도 및 안정된 굴곡 특성을 갖도록 형성되어야 한다. 종래의 대부분의 광섬유케이블은 피복의 중심부에 중심 인장선이 배치되어 있고, 피복과 중심 인장선 사이의 공간에 다수개의 광섬유요소를 삽입한 구조로 되어 있다. 그런데, 이러한 중심인장선 내장형 구조는 피복 중앙에 중심인장선이 배치됨으로써 전체적인 외경이 커지는 단점이 있다. 한편, 피복 중앙에 중심인장선을 삽입하지 않고 피복상에 4개 이상의 인장선을 삽입한 구조의 옥내용 광섬유케이블이 국내 공개특허 제2006-0080306호에 개시되어 있다. 그런데, 피복상에 4개 이상의 인장선이 삽입되는 경우 제조과정이 복잡하고, 피복상에 삽입된 인장선이 아라미드 섬유 또는 유리섬유로 되어 있어 작업현장에서 광섬유요소가 노출되게 피복을 절단하여 탈 피하고자 하는 경우 피복 내에 삽입된 다수의 인장선에 의해 절단이 쉽지 않은 문제점이 있다.In general, a fiber optic cable installed on a pipeline has a structure in which a plurality of optical fibers are surrounded by a sheath. Such optical fiber cable should be formed to have high tensile strength and stable bending characteristics in consideration of the laying strength at the time of laying the pipe. Most conventional optical fiber cables have a central tension line disposed at the center of the sheath, and a plurality of optical fiber elements are inserted in the space between the sheath and the center tension line. However, such a built-in structure of the center tension line has a disadvantage that the overall outer diameter is increased by placing the center tension line in the center of the coating. On the other hand, indoor fiber optic cable having a structure in which four or more tensile wires are inserted on a coating without inserting a central tensile wire in the center of the coating is disclosed in Korean Patent Laid-Open Publication No. 2006-0080306. However, if four or more tensile wires are inserted on the coating, the manufacturing process is complicated, and the tensile wires inserted on the coating are made of aramid fiber or glass fiber, and thus the coating is peeled off to expose the optical fiber element at the work site. If desired, there is a problem in that cutting is not easy due to a plurality of tension lines inserted into the coating.

한편, 광섬유케이블의 피복 내에 내장되는 광섬유요소들의 밀집도를 높이고, 삽입성 및 난연성을 좋게 하기 위해서는 피복 소재에 대한 개선도 요구된다.On the other hand, in order to increase the density of the optical fiber elements embedded in the coating of the optical fiber cable, and to improve the insertability and flame retardancy, improvement of the coating material is also required.

본 발명은 상기와 같은 문제점을 개선하기 위하여 창안된 것으로서, 안정된 인장강도를 제공하면서도 절단성을 향상시키고, 마찰계수를 낮추어 광섬유요소의 집적밀도를 높일 수 있는 광섬유케이블을 제공하는데 그 목적이 있다.The present invention was devised to improve the above problems, and an object of the present invention is to provide an optical fiber cable that can provide a stable tensile strength and improve cutting properties and lower the friction coefficient to increase the integration density of an optical fiber element.

상기의 목적을 달성하기 위하여 본 발명에 따른 광섬유케이블은 광전송매체가 되는 복수개의 광섬유 요소와; 상기 광섬유 요소들을 둘러싸며 상기 광섬유 케이블의 최외곽에 배치되는 피복과; 상기 피복의 중심을 기준으로 180°로 이격된 제1 및 제2위치 상에만 상기 피복 내에 실장되는 제1 및 제2인장선;을 구비하고, 상기 광섬유케이블은 중심에 위치되는 중심 인장선을 포함하지 않는다.In order to achieve the above object, an optical fiber cable according to the present invention comprises: a plurality of optical fiber elements which become an optical transmission medium; A sheath surrounding the optical fiber elements and disposed at the outermost side of the optical fiber cable; First and second tensile wires mounted in the coating only on the first and second positions spaced 180 ° from the center of the sheath, wherein the optical fiber cable includes a center tensile wire positioned at the center thereof. I never do that.

바람직하게는 상기 피복 내의 빈 공간에 아라미드 섬유로 상기 광섬유 요소를 둘러싸도록 배치되는 제1보강부재;를 더 포함한다.And a first reinforcing member, preferably arranged to surround the optical fiber element with aramid fibers in the void space in the sheath.

또한, 상기 제1 및 제2인장선은 금속소재로 된 강연선과 FRP소재로 된 선중 어느 하나가 적용된다.In addition, the first and the second tensile wire is applied to any one of the wire strand made of a metal material and the FRP material.

더욱 바람직하게는 상기 피복은 폴리우레탄 80 내지 85중량%에, 테프론 4 내지 6중량%, 폴리옥시메틸렌 3 내지 4중량%, 세라믹 0.5 내지 0.7중량%, 숯가루 1 내지 5중량%와, 실리콘 1 내지 2중량%, LiAl2(OH)7(LAH) 또는 MgAl(OH)5(MAH) 4 내지 6 중량%로 형성된다.More preferably, the coating is 80 to 85% by weight of polyurethane, 4 to 6% by weight of Teflon, 3 to 4% by weight of polyoxymethylene, 0.5 to 0.7% by weight of ceramic, 1 to 5% by weight of charcoal powder, and silicone 1 To 2% by weight, 4 to 6% by weight of LiAl 2 (OH) 7 (LAH) or MgAl (OH) 5 (MAH).

본 발명에 따른 광섬유케이블은 피복 내에 삽입할 수 있는 광섬유요소의 집적율을 증가시킬 수 있으면서도, 시공시의 절단을 위한 작업성을 향상시킬 수 있다.The optical fiber cable according to the present invention can increase the integration rate of the optical fiber element that can be inserted into the sheath, and can improve workability for cutting during construction.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시 예에 따른 광섬유 케이블을 더욱 상세하게 설명한다.Hereinafter, an optical fiber cable according to a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 광섬유 케이블을 나타내 보인 단면도이다.1 is a cross-sectional view showing an optical fiber cable according to the present invention.

도 1을 참조하면, 광섬유케이블(100)은 복수 개의 광섬유요소(12)와, 제1보강부재(14), 피복(16) 및 제1 및 제2인장선(18)(19)을 구비한다.Referring to FIG. 1, the optical fiber cable 100 includes a plurality of optical fiber elements 12, a first reinforcing member 14, a sheath 16, and first and second tensile lines 18, 19. .

광섬유요소(12)는 광을 전송하는 광전송매체가 되는 것으로서, 광섬유, 버퍼 광섬유(buffered optical fiber), 루즈 튜브가 적용될 수 있다. 여기서, 광섬유는 유리재질의 코어 및 클래드로 이루어진 베어 광섬유(bare optical fiber)와, 베어 광섬유를 수지로 코팅한 것, 식별을 용이하게 하기 위해 베어 광섬유를 착색한 것을 포함하고, 버퍼 광섬유는 광섬유를 플라스틱으로 압출 코팅한 것을 말하며, 루즈 튜브는 착색된 광섬유 또는 리본 광섬유를 튜브에 실장시킨 것을 말한다.The optical fiber element 12 is an optical transmission medium for transmitting light, and an optical fiber, a buffered optical fiber, and a loose tube may be applied. Here, the optical fiber includes a bare optical fiber composed of a glass core and a clad, a coating of the bare optical fiber with a resin, and a color of the bare optical fiber for easy identification, and the buffer optical fiber includes the optical fiber. Refers to extrusion coating of plastic, and loose tube refers to a colored optical fiber or ribbon optical fiber mounted on the tube.

피복(16)은 중공을 갖는 원형관 형태로 형성되어 있고, 광섬유 요소(12)들을 둘러싸며 광섬유 케이블(100)의 최외곽에 배치된다.The sheath 16 is formed in the form of a circular tube with a hollow and surrounds the optical fiber elements 12 and is disposed on the outermost side of the optical fiber cable 100.

피복(16)은 충분한 난연특성을 확보하면서도 낮은 마찰계수를 제공할 수 있는 소재로 형성되는 것이 바람직하다.The sheath 16 is preferably formed of a material capable of providing a low coefficient of friction while ensuring sufficient flame retardant properties.

이를 위해 피복(16)은 메인소재 80 내지 85중량%, 테프론 4 내지 6중량%, 폴 리옥시메틸렌 3 내지 4중량%, 세라믹 0.5 내지 0.7중량%, 숯가루 1 내지 5중량%와, 실리콘 1 내지 2중량% 및 보조 첨가제 4 내지 6 중량%로 형성된다.For this purpose, the coating 16 is 80 to 85% by weight of the main material, 4 to 6% by weight of Teflon, 3 to 4% by weight of polyoxymethylene, 0.5 to 0.7% by weight of ceramic, 1 to 5% by weight of charcoal powder, and silicon 1 To 2% by weight and 4 to 6% by weight of the additive additive.

메인 소재는 폴리우레탄이 적용되는 것이 바람직하고, 보조 첨가제는 LiAl2(OH)7(LAH) 또는 MgAl(OH)5(MAH)가 적용되는 것이 바람직하다. Preferably, the main material is polyurethane. The auxiliary additive is preferably LiAl 2 (OH) 7 (LAH) or MgAl (OH) 5 (MAH).

피복(16)을 이루는 성분 중, 테프론, 폴리옥시메틸렌, 세라믹, 실리콘은 마찰계수를 낮추기 위한 것이고, 숯가루 및 LiAl2(OH)7(LAH) 또는 MgAl(OH)5(MAH)는 난연성을 높이기 위한 것이다.Among the components constituting the coating 16, teflon, polyoxymethylene, ceramic, and silicon are used to lower the coefficient of friction, and charcoal powder and LiAl 2 (OH) 7 (LAH) or MgAl (OH) 5 (MAH) are used to increase flame retardancy. It is for.

피복(16)의 외경은 5.5mm 이하로 형성하는 것이 바람직하다.The outer diameter of the coating 16 is preferably formed to be 5.5 mm or less.

제1 및 제2 인장선(18)(19)은 피복(16)의 중심을 기준으로 180°로 이격된 제1 및 제2위치 상에만 피복(16) 내에 실장되어 있다. The first and second tensile lines 18, 19 are mounted in the sheath 16 only on the first and second positions spaced 180 degrees from the center of the sheath 16.

제1 및 제2인장선(18)(19)은 강연선과 섬유강화플라스틱인 에프알피(FRP)선중 어느 하나가 적용되는 것이 바람직하다. 여기서 강연선은 금속소재 예를 들면, 철, 아연 도금된 철선 또는 그 밖의 합금으로 된 금속선을 다수 가닥 꼬은 것으로서 전체 외경은 0.5mm이하, 바람직하게는 0.4 내지 0.5mmm정도로 된 것을 적용하는 것이 바람직하다.As the first and second tensile wires 18 and 19, it is preferable that any one of a strand wire and a fiber reinforced plastic (FRP) wire is applied. The stranded wire is a strand of a metal material, for example, a plurality of strands of a metal wire, such as iron, galvanized iron wire or other alloy, the overall outer diameter is preferably 0.5mm or less, preferably 0.4 to 0.5mmm.

제1보강부재(14)는 피복(16) 내의 빈 공간에 광섬유 요소(12)를 둘러싸도록 배치되어 있고, 섬유소재 바람직하게는 아라미드 섬유(aramid yarn)을 적용한다.The first reinforcing member 14 is arranged to surround the optical fiber element 12 in an empty space in the sheath 16 and applies a fibrous material, preferably aramid yarn.

이러한 광섬유케이블(100)은 중심에 중심 인장선을 포함하지 않으면서도 두 개의 인장선(18)(19)에 의해 피복(16)의 인장강도를 높이면서도 절단성을 높일 수 있다.The optical fiber cable 100 may increase cutting force while increasing tensile strength of the sheath 16 by two tensile lines 18 and 19 without including a central tensile line in the center thereof.

도 1은 본 발명에 따른 광섬유 케이블을 나타내 보인 단면도이다.1 is a cross-sectional view showing an optical fiber cable according to the present invention.

Claims (4)

삭제delete 삭제delete 삭제delete 광섬유 케이블에 있어서,In optical fiber cable, 광전송매체가 되는 복수개의 광섬유 요소와;A plurality of optical fiber elements to be optical transmission media; 상기 광섬유 요소들을 둘러싸며 상기 광섬유 케이블의 최외곽에 배치되는 피복과;A sheath surrounding the optical fiber elements and disposed at the outermost side of the optical fiber cable; 상기 피복의 중심을 기준으로 180°로 이격된 제1 및 제2위치 상에만 상기 피복 내에 실장되는 제1 및 제2인장선과;First and second tensile lines mounted in the coating only on first and second positions spaced 180 ° from the center of the coating; 상기 피복 내의 빈 공간에 아라미드 섬유로 상기 광섬유 요소를 둘러싸도록 배치되는 제1보강부재;를 구비하고,A first reinforcing member arranged to surround the optical fiber element with aramid fibers in an empty space in the coating; 상기 광섬유케이블은 중심에 위치되는 중심 인장선을 포함하지 않으며, The optical fiber cable does not include a center tensile line located at the center, 상기 피복은 폴리우레탄 80 내지 85중량%에, 테프론 4 내지 6중량%, 폴리옥시메틸렌 3 내지 4중량%, 세라믹 0.5 내지 0.7중량%, 숯가루 1 내지 5중량%와, 실리콘 1 내지 2중량%, LiAl2(OH)7(LAH) 4 내지 6 중량%로 형성된 것을 특징으로 하는 광섬유 케이블.The coating is 80 to 85 weight percent polyurethane, 4 to 6 weight percent Teflon, 3 to 4 weight percent polyoxymethylene, 0.5 to 0.7 weight percent ceramic, 1 to 5 weight percent charcoal powder and 1 to 2 weight percent silicone , LiAl 2 (OH) 7 (LAH) 4 to 6 wt%, characterized in that the optical fiber cable.
KR1020070103698A 2007-10-15 2007-10-15 Optical fiber cable KR100899036B1 (en)

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IT1395442B1 (en) * 2009-05-26 2012-09-21 Del Vento PROTECTIVE TUBE FOR ELECTRICAL SYSTEMS, DATA TRANSMISSION NETWORKS AND FOR TELECOMMUNICATIONS AND RELATIVE PROCESS OF PROCESSING.
KR101147166B1 (en) * 2010-07-13 2012-05-25 대한전선 주식회사 Optic-electrical complex cable which facilitates being moved
CN106328303B (en) * 2016-10-25 2017-12-05 浙江江山博奥电气有限公司 A kind of manufacture method of magnaflux low weight optoelectronic composite cable

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JPH09243886A (en) * 1996-03-06 1997-09-19 Fujikura Ltd Nonmetallic optical fiber cable
JPH10170778A (en) * 1996-12-06 1998-06-26 Sumitomo Electric Ind Ltd Optical cable
JP2001350069A (en) 2000-06-07 2001-12-21 Furukawa Electric Co Ltd:The Optical fiber cable
KR20060103807A (en) * 2005-03-28 2006-10-04 후지제롯쿠스 가부시끼가이샤 Flame-retardant epoxy resin composition, and electronic device, laminated circuit board, multilayered circuit board and printed circuit board using the flame-retardant epoxy resin composition

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JPH09243886A (en) * 1996-03-06 1997-09-19 Fujikura Ltd Nonmetallic optical fiber cable
JPH10170778A (en) * 1996-12-06 1998-06-26 Sumitomo Electric Ind Ltd Optical cable
JP2001350069A (en) 2000-06-07 2001-12-21 Furukawa Electric Co Ltd:The Optical fiber cable
KR20060103807A (en) * 2005-03-28 2006-10-04 후지제롯쿠스 가부시끼가이샤 Flame-retardant epoxy resin composition, and electronic device, laminated circuit board, multilayered circuit board and printed circuit board using the flame-retardant epoxy resin composition

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