JP4053202B2 - Optical communication trunk cable branch and optical communication trunk cable - Google Patents

Optical communication trunk cable branch and optical communication trunk cable Download PDF

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Publication number
JP4053202B2
JP4053202B2 JP2000029561A JP2000029561A JP4053202B2 JP 4053202 B2 JP4053202 B2 JP 4053202B2 JP 2000029561 A JP2000029561 A JP 2000029561A JP 2000029561 A JP2000029561 A JP 2000029561A JP 4053202 B2 JP4053202 B2 JP 4053202B2
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optical
cable
optical communication
communication trunk
trunk cable
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JP2001116968A (en
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建夫 高橋
仁男 伊藤
俊之 五十嵐
誠 程原
源 田村
文博 秋月
英明 田島
憲治 野中
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トヨクニ電線株式会社
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • G02B6/4472—Manifolds
    • G02B6/4475—Manifolds with provision for lateral branching

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  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はオフィスビル等の建物に光通信幹線ケーブルを設置する場合に使用される光通信幹線ケーブル用分岐具および光通信幹線ケーブルに関する。
【０００２】
【従来の技術】
従来、オフィスビル等の建物には地下に設けた外部からの光通信幹線ケーブルに接続される構内光キャビネットＰＴに、接続された建物の上部より吊り下げられた光通信幹線ケーブルの所定のテープ心線を所定の階に設置した構内光キャビネットＰＤに融着接続するとともに、該構内光キャビネットＰＤより、その階および上下階に光ケーブルを用いてそれぞれの階に設置された回線接続装置に接続している。
【０００３】
【発明が解決しようとする課題】
従来の建物に吊り下げ状態で使用される光通信幹線ケーブルは、設置現場で所定位置のシースを除去し、該光通信幹線ケーブルのテープ心線を構内光キャビネットＰＤに融着接続する作業を行なわなければならず、その作業が大変で、手数がかかるという欠点があった。
【０００４】
本発明は以上のような従来の欠点に鑑み、融着接続等の大変な作業を現場で行なうことなく、工場で行なうことができ、現場では簡単な作業で取付けることができる分岐具を用いて光通信ケーブルの配線を行なうことができる、工場から現場への移送も従来とほぼ同じように行なうことができる光通信幹線ケーブルおよび光通信幹線ケーブル用分岐具を提供すること目的としている。
【０００５】
本発明の前記ならびにそのほかの目的と新規な特徴は次の説明を添付図面と照らし合わせて読むと、より完全に明らかになるであろう。
ただし、図面はもっぱら解説のためのものであって、本発明の技術的範囲を限定するものではない。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明は光通信幹線ケーブル、この光通信幹線ケーブルから分岐された光心線あるいはテープ光心線、およびこの光心線あるいはテープ光心線に接続された接続光ケーブルを覆い、ケース体、ベース板およびカバー体とからなる光通信幹線ケーブル用分岐具であって、
前記ベース板には、前記接続光ケーブルの先端部のコネクターおよびＦＯケーブルのコネクターが接続される接続部が取付けられており、
前記ベース板は、前記ケース体に着脱可能に取付けられかつ前記カバー体内部に収納され、
前記ケース体と前記ベース板とで前記光通信幹線ケーブルを覆い、
前記ベース板と前記カバー体とで前記光心線あるいは前記テープ光心線、および前記接続光ケーブルを覆つて光通信幹線ケーブル用分岐具を構成している。
【０００７】
また、本発明は複数個の光心線あるいいはテープ光心線がシースで覆われた光通信幹線ケーブルであって、少なくとも２箇所以上の所定位置のシースを除去して前記光心線あるいいはテープ光心線を分岐し、この光心線あるいいはテープ光心線に接続光ケーブルを接続して、その分岐部分および前記接続光ケーブルを請求項１または請求項３に記載の光通信幹線ケーブル用分岐具で覆って光通信幹線ケーブルを構成している。
【０００８】
【発明の実施の形態】
以下、図面に示す実施の形態により、本発明を詳細に説明する。
【０００９】
図１ないし図９に示す本発明の第１の実施の形態において、１はオフィスビル等の建物２の上部階より各階の床面に形成された貫通孔３、３、３、３を通過して、下部階へ吊り下げ状態で設置される本発明の光通信幹線ケーブルで、この光通信幹線ケーブル１はあらかじめ設置される現場に合うように設計されたものを工場で製造したもので、図３に示すように４心テープ光心線４、４、４、４、４を５個設けたテープスロット型光通信幹線ケーブル本体５と、この光通信幹線ケーブル本体５の上端部に、図４に示すように取付けられた前記建物２の天井部位に固定された取付け金具６に取付けることができるケーブル吊り具７と、前記光通信幹線ケーブル本体５の前記建物２の各階に位置する部位のシース８を、図５に示すように除去して、あらかじめ設定された該光通信幹線ケーブル本体５の４心テープ光心線４、４、４、４、４と融着接続され、保護チューブ９で覆われるとともに、先端部にＭＵ型簡易フェルール１０、１０、１０、１０が取付けられた接続光ケーブル１１、１１、１１、１１、１１と、前記シース８除去部分の下部を前記接続光ケーブル１１の先端部が外方へ突出するように覆うカバー１２、１２、１２、１２、１２とで構成されている。
【００１０】
１３、１３、１３、１３、１３は設置現場で前記接続光ケーブル１１、１１、１１、１１、１１と光配線ボックス１４、１４、１４、１４、１４に接続されたＭＵ型コネクター１５が備えられたＦＯケーブル１６、１６、１６、１６、１６と接続するとともに該接続部位を覆う分岐具で、この分岐具１３、１３、１３、１３、１３は図７ないし図９に示すように、前記光通信幹線ケーブル本体５のシース８除去部に支持させることができる、前記接続光ケーブル１１の融着接続部を収納する収納部１７および前記接続光ケーブル１１のＭＵ型簡易フェルール１０、１０、１０、１０と前記ＦＯケーブル１６のＭＵ型コネクター１５と接続される接続具１８とが設けられたベース板１９と、このベース板１９および該ベース板１９取付け部位の前記光通信幹線ケーブル本体５を覆うことができるベース板支持部２０が形成された下端部が順次小径となる箱状のケース体２１と、このケース体２１の開口部２１ａを覆うように複数本のビス２２で該ケース体２１に取付けられる内部に前記ベース板１９を位置させる、下端部が順次小径となるカバー体２３とで構成されている。
【００１１】
上記構成の光通信幹線ケーブル本体５に工場で接続光ケーブル１１、１１、１１、１１、１１を融着接続させ、該接続部を保護カバー等によって保護して設置現場に運び、分岐具１３、１３、１３、１３、１３を取付けながら、建物２の上部階より下部階へ吊り下げたり、あるいは上部階より下部階へ吊り下げた後に分岐具１３、１３、１３、１３、１３を取付け、光通信幹線ケーブル１を完成させる。
【００１２】
【発明の異なる実施の形態】
次に、図１０ないし図２２に示す本発明の異なる実施の形態につき説明する。なお、これらの本発明の異なる実施の形態の説明に当って、前記本発明の第１の実施の形態と同一構成部分には同一符号を付して重複する説明を省略する。
【００１３】
図１０ないし図１３に示す本発明の第２の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、上下端部を順次小径となるケース体２１Ａとカバー体２３Ａとを用いた分岐具１３Ａ、１３Ａ、１３Ａ、１３Ａ、１３Ａを用いた点で、このように形成された分岐具１３Ａ、１３Ａ、１３Ａ、１３Ａ、１３Ａを用いた光通信幹線ケーブル１Ａにしても、前記本発明の第１の実施の形態と同様な作用効果が得られる。
【００１４】
図１４ないし図１７に示す本発明の第３の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、先端部にコネクター２４、２４、２４、２４が取付けられた接続光ケーブル１１Ａ、１１Ａ、１１Ａ、１１Ａ、１１Ａと、この接続光ケーブル１１Ａ、１１Ａ、１１Ａ、１１Ａ、１１Ａのコネクター２４、２４、２４、２４とＦＯケーブル１６のコネクター１５とが接続される接続具１８Ａを用いた分岐具１３Ｂ、１３Ｂ、１３Ｂ、１３Ｂ、１３Ｂを用いた点で、このように構成した光通信幹線ケーブル１Ｂにしても、前記本発明の第１の実施の形態と同様な作用効果が得られる。
【００１５】
図１８ないし図２２に示す本発明の第４の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、光通信幹線ケーブル本体５のシース除去部分より所定寸法引き出した４心テープ光心線４の先端部に、ＭＴコネクター２５を取付けるとともに、このＭＴコネクター２５と接続されるＭＴコネクター２６が取付けられ、先端部に簡易フェルール２７が取付けられた接続光ケーブル２８と、この接続光ケーブル２８の簡易フェルール２７と接続される簡易レセプタクル２９が一端部に取付けられた前記シース除去部分を覆うカバー体２３Ｂとからなる光通信幹線ケーブル分岐具１３Ｃとを用いた点で、このように構成した光通信幹線ケーブル１Ｃは、図２２に示すように簡易レセプタクル２９と光配線ボックス１４とをＦＯケーブル１６で簡単に接続することができる。
なお、光通信幹線ケーブル分岐具１３Ｃの簡易レセプタクル２９に接続されたＦＯケーブル１６の該簡易レセプタクル２９側の端部は光通信幹線ケーブル分岐具１３Ｃの端部を覆う軟質性ビニールカバー３０で覆う。
【００１６】
前記本発明の各実施の形態では光通信幹線ケーブル本体５としてテープスロット型のものを用いたものについて説明したが、本発明はこれに限らず、複数個の光心線を束ねてシースで覆ったものを用いてもよく、また、４心テープ光心線を１０個、１５個、２５個、５０個用いたり、分岐具１３、１３Ａ、１３Ｂ、１３Ｃをそれぞれの階でなく、所定の階に位置するように設けてもよい。
【００１７】
【発明の効果】
以上の説明から明らかなように、本発明にあっては次に列挙する効果が得られる。
【００１８】
（１）光通信幹線ケーブル、この光通信幹線ケーブルから分岐された光心線あるいはテープ光心線、およびこの光心線あるいはテープ光心線に接続された接続光ケーブルを覆い、ケース体、ベース板およびカバー体とからなる光通信幹線ケーブル用分岐具であって、
前記ベース板には、前記接続光ケーブルの先端部のコネクターおよびＦＯケーブルのコネクターが接続される接続部が取付けられており、
前記ベース板は、前記ケース体に着脱可能に取付けられかつ前記カバー体内部に収納され、
前記ケース体と前記ベース板とで前記光通信幹線ケーブルを覆い、
前記ベース板と前記カバー体とで前記光心線あるいは前記テープ光心線、および前記接続光ケーブルを覆っているので、設置現場で光通信幹線ケーブル本体と接続ケーブルとを融着接続しなくてもよい。
【００１９】
（２）前記（１）によって、光通信幹線ケーブル本体の光心線あるいはテープ光心線と接続ケーブルとを接続する分岐部は工場で融着接続するので、品質保証が確実にできる。
したがって、光通信幹線ケーブルの配線に対する信頼性の向上を図ることができる。
【００２０】
（３）前記（１）によって、設置現場ではコネクターと接続具の接続とベース板、ケース体、カバー体とからなる分岐具の取付けでよいので、光ケーブル接続用の特殊技術者でなくても、容易に接続作業を行なうことができる。
【００２１】
（４）請求項２、３、４も前記（１）〜（３）と同様な効果が得られる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態の使用状態の説明図。
【図２】本発明の第１の実施の形態の説明図。
【図３】本発明の第１の実施の形態の光通信幹線ケーブル本体の説明図。
【図４】本発明の第１の実施の形態のケーブル吊り具の説明図。
【図５】本発明の第１の実施の形態の分岐部の接続状態を示す説明図。
【図６】本発明の第１の実施の形態の分岐具の取付け状態の説明図。
【図７】本発明の第１の実施の形態の分岐具の分解図。
【図８】図６の８−８線に沿う断面図。
【図９】図６の９−９線に沿う断面図。
【図１０】本発明の第２の実施の形態の使用状態の説明図。
【図１１】本発明の第２の実施の形態の説明図。
【図１２】本発明の第２の実施の形態の分岐部の説明図。
【図１３】本発明の第２の実施の形態の分岐具の分解図。
【図１４】本発明の第３の実施の形態の使用状態の説明図。
【図１５】本発明の第３の実施の形態の説明図。
【図１６】本発明の第３の実施の形態の分岐具の取付け状態の説明図。
【図１７】本発明の第３の実施の形態の分岐具の分解図。
【図１８】本発明の第４の実施の形態の使用状態の説明図。
【図１９】本発明の第４の実施の形態の説明図。
【図２０】本発明の第４の実施の形態の分岐部の接続状態を示す説明図。
【図２１】本発明の第４の実施の形態の分岐具の取付け状態の説明図。
【図２２】本発明の第４の実施の形態の斜視図
【符号の説明】
１、１Ａ、１Ｂ、１Ｃ：光通信幹線ケーブル、
２：建物、
３：貫通孔、
４：４心テープ光心線、 ５：光通信幹線ケーブル本体、
６：取付け金具、 ７：ケーブル吊り具、
８：シース、 ９：保護チューブ、
１０：ＭＵ型簡易フェルール、
１１、１１Ａ：接続光ケーブル、
１２：カバー、
１３、１３Ａ、１３Ｂ、１３Ｃ：分岐具、
１４：光配線ボックス、 １５：ＭＵ型コネクター、
１６：ＦＯケーブル、
１７：収納部、
１８、１８Ａ：接続具、 １９：ベース板、
２０：ベース板支持部、 ２１、２１Ａ、２１Ｂ：ケース体、
２２：ビス、 ２３、２３Ａ、２３Ｂ：カバー体、
２４：コネクター、 ２５：ＭＴコネクター、
２６：ＭＴコネクター、 ２７：簡易フェルール、
２８：接続光ケーブル、 ２９：簡易レセプタクル、
３０：軟質性ビニールカバー。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical communication trunk cable branching tool and an optical communication trunk cable used when an optical communication trunk cable is installed in a building such as an office building.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a building such as an office building, a predetermined tape core of an optical communication trunk cable suspended from an upper part of the building connected to an indoor optical cabinet PT connected to an external optical communication trunk cable provided underground. The line is fused and connected to the on-site optical cabinet PD installed on the predetermined floor, and the on-site optical cabinet PD is connected to the line connection device installed on each floor using optical cables on the floor and the upper and lower floors. Yes.
[0003]
[Problems to be solved by the invention]
An optical communication trunk cable used in a suspended state in a conventional building performs the work of removing the sheath at a predetermined position at the installation site and fusion-bonding the tape core of the optical communication trunk cable to the indoor optical cabinet PD. There was a drawback that the work was difficult and time consuming.
[0004]
In view of the above-mentioned conventional drawbacks, the present invention uses a branching tool that can be carried out at a factory without performing a tough work such as fusion splicing at the site, and can be attached by a simple operation at the site. It is an object of the present invention to provide an optical communication trunk cable and an optical communication trunk cable branching device that can perform wiring of an optical communication cable and can be transferred from a factory to a site in the same manner as in the past.
[0005]
The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.
[0006]
[Means for Solving the Problems]
To achieve the above object, the present invention provides an optical communication trunk cable, an optical fiber core or a tape optical fiber branched from the optical communication trunk cable, and a connection optical cable connected to the optical fiber or tape optical fiber. An optical communication trunk cable branching device comprising a case body, a base plate, and a cover body,
The base plate is attached with a connection portion to which a connector of a front end portion of the connection optical cable and a connector of an FO cable are connected,
The base plate is detachably attached to the case body and housed inside the cover body,
Covering the optical communication trunk cable with the case body and the base plate,
The base plate and the cover body cover the optical fiber core or the tape optical fiber core and the connection optical cable to constitute a branching device for an optical communication trunk cable.
[0007]
Further, the present invention is an optical communication trunk cable in which a plurality of optical fibers or tape optical fibers are covered with a sheath, and the optical fibers are removed by removing at least two or more sheaths at predetermined positions. 4. The optical fiber trunk of claim 1 or claim 3, wherein a tape optical fiber is branched, a connection optical cable is connected to the optical fiber, or a tape optical fiber, and the branched portion and the connection optical cable are connected. An optical communication trunk cable is formed by covering with a cable branching tool.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
[0009]
In the first embodiment of the present invention shown in FIGS. 1 to 9, 1 passes through through holes 3, 3, 3, 3 formed on the floor of each floor from the upper floor of a building 2 such as an office building. The optical communication trunk cable of the present invention installed in a suspended state on the lower floor, and this optical communication trunk cable 1 is manufactured at the factory and is designed to suit the installation site. As shown in FIG. 3, a tape slot type optical communication trunk cable main body 5 provided with five four-core optical fiber cores 4, 4, 4, 4, 4 and an upper end portion of the optical communication trunk cable main body 5 are connected to FIG. A cable suspension 7 that can be attached to a mounting bracket 6 that is fixed to the ceiling portion of the building 2 that is attached as shown in FIG. 2 and a sheath of a portion that is located on each floor of the building 2 of the optical communication trunk cable body 5 8 is removed as shown in FIG. The preset optical fiber trunk cable body 5 has a four-core tape optical fiber 4, 4, 4, 4, 4 fused and covered with a protective tube 9, and a MU-type simple ferrule 10 at the tip. Cover optical cables 11, 11, 11, 11, 11 to which 10, 10, 10 are attached, and covers 12, 12 covering the lower part of the sheath 8 removal portion so that the distal end portion of the connection optical cable 11 protrudes outward. , 12, 12, and 12.
[0010]
13, 13, 13, 13, and 13 are provided with MU-type connectors 15 connected to the connection optical cables 11, 11, 11, 11, and the optical wiring boxes 14, 14, 14, 14, 14 at the installation site. A branching tool that connects to the FO cables 16, 16, 16, 16, 16 and covers the connection part. The branching tools 13, 13, 13, 13, and 13 are connected to the optical communication as shown in FIGS. The housing part 17 for accommodating the fusion splicing part of the connection optical cable 11 and the MU-type simple ferrules 10, 10, 10, 10 of the connection optical cable 11 which can be supported by the sheath 8 removal part of the main cable body 5 and the above-mentioned A base plate 19 provided with a connector 18 connected to the MU connector 15 of the FO cable 16, and the base plate 19 and the base plate 19 attachment site A box-like case body 21 having a lower end formed with a base plate support portion 20 capable of covering the optical communication trunk line main body 5 and having a smaller diameter sequentially, and a plurality of openings so as to cover the opening 21a of the case body 21. The base plate 19 is positioned inside the case body 21 that is attached to the case body 21 with a screw 22 and a cover body 23 whose lower end portion has a gradually decreasing diameter.
[0011]
The connecting optical cables 11, 11, 11, 11, 11 are fused and connected to the optical communication trunk cable main body 5 having the above-described configuration at the factory, and the connecting portions are protected by a protective cover or the like and carried to the installation site. , 13, 13 or 13 while hanging from the upper floor of the building 2 to the lower floor, or hanging from the upper floor to the lower floor, and then attaching the branching devices 13, 13, 13, 13, 13 to the optical communication The trunk cable 1 is completed.
[0012]
Different Embodiments of the Invention
Next, different embodiments of the present invention shown in FIGS. 10 to 22 will be described. In the description of the different embodiments of the present invention, the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and redundant description is omitted.
[0013]
The second embodiment of the present invention shown in FIGS. 10 to 13 is mainly different from the first embodiment of the present invention in that a case body 21A and a cover body 23A whose upper and lower ends are sequentially reduced in diameter. In the point using the branching devices 13A, 13A, 13A, 13A, and 13A using the above, the optical communication trunk cable 1A using the branching devices 13A, 13A, 13A, 13A, and 13A formed in this way is used. The same effects as those of the first embodiment of the present invention can be obtained.
[0014]
In the third embodiment of the present invention shown in FIGS. 14 to 17, the main difference from the first embodiment of the present invention is that the connectors 24, 24, 24, 24 are attached to the tip. The connecting optical cable 11A, 11A, 11A, 11A, 11A and the connector 18A to which the connectors 24, 24, 24, 24 of the connecting optical cable 11A, 11A, 11A, 11A, 11A and the connector 15 of the FO cable 16 are connected are provided. The same effect as that of the first embodiment of the present invention can be obtained even in the optical communication trunk cable 1B configured in this way in that the branching devices 13B, 13B, 13B, 13B, and 13B used are used. It is done.
[0015]
In the fourth embodiment of the present invention shown in FIGS. 18 to 22, the main difference from the first embodiment of the present invention is that a predetermined dimension is drawn from the sheath removal portion of the optical communication trunk cable main body 5. An MT connector 25 is attached to the tip of the four-core tape optical fiber 4, and an MT connector 26 connected to the MT connector 25 is attached, and a connection optical cable 28 having a simple ferrule 27 attached to the tip, and this In this way, a simple receptacle 29 connected to the simple ferrule 27 of the connection optical cable 28 is used with an optical communication trunk cable branching tool 13C comprising a cover body 23B covering the sheath removal portion attached to one end. The constructed optical communication trunk cable 1C has a simple receptacle 29 and an optical wiring box 14 connected to an FO cable as shown in FIG. It can be easily connected with Le 16.
The end of the FO cable 16 connected to the simple receptacle 29 of the optical communication trunk cable branching tool 13C on the simple receptacle 29 side is covered with a soft vinyl cover 30 that covers the end of the optical communication trunk cable branching tool 13C.
[0016]
In each of the embodiments of the present invention, a description has been given of the case where the optical communication trunk cable body 5 uses a tape slot type, but the present invention is not limited to this, and a plurality of optical fibers are bundled and covered with a sheath. 10 cores, 15 cores, 25 cores, 50 cores, or branching devices 13, 13A, 13B, 13C are not used on the respective floors. You may provide so that it may be located in.
[0017]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
[0018]
(1) Covers the optical communication trunk cable, the optical fiber or tape optical fiber branched from the optical communication trunk cable, and the connection optical cable connected to the optical fiber or tape optical cable, and the case body and the base plate And a branching device for an optical communication trunk cable comprising a cover body,
The base plate is attached with a connection portion to which a connector of a front end portion of the connection optical cable and a connector of an FO cable are connected,
The base plate is detachably attached to the case body and housed inside the cover body,
Covering the optical communication trunk cable with the case body and the base plate,
Since the optical fiber or the tape optical fiber and the connection optical cable are covered with the base plate and the cover body, the optical communication trunk cable body and the connection cable are not fused and connected at the installation site. Good.
[0019]
(2) According to the above (1), since the branching section connecting the optical fiber of the optical communication trunk cable main body or the tape optical fiber and the connection cable is fusion-bonded at the factory, quality assurance can be ensured.
Therefore, it is possible to improve the reliability of the optical communication trunk cable.
[0020]
(3) According to the above (1), since it is only necessary to connect the connector and the connection tool and install the branching device including the base plate, the case body, and the cover body at the installation site, even if it is not a special engineer for optical cable connection, Connection work can be easily performed.
[0021]
(4) Claims 2, 3, and 4 can provide the same effects as the above (1) to (3).
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a usage state of a first embodiment of the present invention.
FIG. 2 is an explanatory diagram of the first embodiment of the present invention.
FIG. 3 is an explanatory diagram of an optical communication trunk cable main body according to the first embodiment of this invention.
FIG. 4 is an explanatory diagram of the cable suspension according to the first embodiment of this invention.
FIG. 5 is an explanatory diagram illustrating a connection state of a branch unit according to the first embodiment of this invention.
FIG. 6 is an explanatory diagram of an attached state of the branching tool according to the first embodiment of the present invention.
FIG. 7 is an exploded view of the branching tool according to the first embodiment of the present invention.
8 is a cross-sectional view taken along line 8-8 in FIG.
9 is a cross-sectional view taken along line 9-9 of FIG.
FIG. 10 is an explanatory diagram of a use state of the second embodiment of the present invention.
FIG. 11 is an explanatory diagram of a second embodiment of the present invention.
FIG. 12 is an explanatory diagram of a branching unit according to the second embodiment of this invention.
FIG. 13 is an exploded view of a branching tool according to a second embodiment of the present invention.
FIG. 14 is an explanatory diagram of a usage state of the third embodiment of the present invention.
FIG. 15 is an explanatory diagram of a third embodiment of the present invention.
FIG. 16 is an explanatory diagram of an attached state of the branching tool according to the third embodiment of the present invention.
FIG. 17 is an exploded view of a branching tool according to a third embodiment of the present invention.
FIG. 18 is an explanatory diagram of a usage state of the fourth embodiment of the present invention.
FIG. 19 is an explanatory diagram of a fourth embodiment of the present invention.
FIG. 20 is an explanatory diagram illustrating a connection state of a branch unit according to the fourth embodiment of this invention.
FIG. 21 is an explanatory diagram of the attachment state of the branching tool according to the fourth embodiment of the present invention.
FIG. 22 is a perspective view of a fourth embodiment of the present invention.
1, 1A, 1B, 1C: optical communication trunk cable,
2: Building,
3: Through hole,
4: Four-core tape optical fiber, 5: Optical communication trunk cable body,
6: Mounting bracket, 7: Cable hanger,
8: sheath, 9: protective tube,
10: MU-type simple ferrule,
11, 11A: connection optical cable,
12: Cover,
13, 13A, 13B, 13C: branching tool,
14: Optical wiring box, 15: MU type connector,
16: FO cable
17: storage section,
18, 18A: connector, 19: base plate,
20: Base plate support section 21, 21A, 21B: Case body,
22: Screw, 23, 23A, 23B: Cover body,
24: Connector, 25: MT connector,
26: MT connector, 27: Simple ferrule,
28: Connection optical cable, 29: Simple receptacle,
30: Soft vinyl cover.

Claims (4)

光通信幹線ケーブル、この光通信幹線ケーブルから分岐された光心線あるいはテープ光心線、およびこの光心線あるいはテープ光心線に接続された接続光ケーブルを覆い、ケース体、ベース板およびカバー体とからなる光通信幹線ケーブル用分岐具であって、
前記ベース板には、前記接続光ケーブルの先端部のコネクターおよびＦＯケーブルのコネクターが接続される接続部が取付けられており、
前記ベース板は、前記ケース体に着脱可能に取付けられかつ前記カバー体内部に収納され、
前記ケース体と前記ベース板とで前記光通信幹線ケーブルを覆い、
前記ベース板と前記カバー体とで前記光心線あるいは前記テープ光心線、および前記接続光ケーブルを覆うことを特徴とする光通信幹線ケーブル用分岐具。Covering the optical communication trunk cable, the optical fiber core or tape optical fiber branched from the optical communication trunk cable, and the connection optical cable connected to the optical fiber core or tape optical fiber core, a case body, a base plate and a cover body An optical communication trunk cable branching device comprising:
The base plate is attached with a connection portion to which a connector of a front end portion of the connection optical cable and a connector of an FO cable are connected,
The base plate is detachably attached to the case body and housed inside the cover body,
Covering the optical communication trunk cable with the case body and the base plate,
An optical communication trunk cable branching device, wherein the optical fiber or the tape optical fiber, and the connection optical cable are covered with the base plate and the cover body. 光心線あるいはテープ光心線と接続光ケーブルとが融着接続されており、その融着接続部を収納する収納部がベース板に設けられていることを特徴とする請求項１記載の光通信幹線ケーブル用分岐具。  2. The optical communication according to claim 1, wherein the optical fiber or the tape optical fiber and the connection optical cable are fusion-connected, and a storage portion for storing the fusion-connection portion is provided on the base plate. Branch device for trunk cable. 複数個の光心線あるいはテープ光心線がシースで覆われた光通信幹線ケーブルであって、少なくとも２箇所以上の所定位置のシースを除去して前記光心線あるいはテープ光心線を分岐し、この光心線あるいはテープ光心線に接続光ケーブルを接続して、その分岐部分および前記接続光ケーブルを請求項１に記載の光通信幹線ケーブル用分岐具で覆ったことを特徴とする光通信幹線ケーブル。An optical communication trunk cable in which a plurality of optical fibers or tape optical fibers are covered with a sheath, and at least two or more sheaths at predetermined positions are removed to branch the optical fibers or tape optical fibers. An optical communication trunk line comprising: a connecting optical cable connected to the optical fiber core or the tape optical fiber core; and the branching portion and the connecting optical cable covered with the optical fiber trunk cable branching device according to claim 1. cable. 複数個の光心線あるいはテープ光心線がシースで覆われた光通信幹線ケーブルであって、少なくとも２箇所以上の所定位置のシースを除去して前記光心線あるいはテープ光心線を分岐し、この光心線あるいはテープ光心線に接続光ケーブルを融着接続して、その分岐部分、融着接続部分および前記接続光ケーブルを請求項２記載の光通信幹線ケーブル用分岐具で覆ったことを特徴とする光通信幹線ケーブル。  An optical communication trunk cable in which a plurality of optical fibers or tape optical fibers are covered with a sheath, and at least two or more sheaths at predetermined positions are removed to branch the optical fibers or tape optical fibers. A connecting optical cable is fused and connected to the optical fiber or the tape optical fiber, and the branching portion, the fusion connecting portion and the connecting optical cable are covered with the optical fiber trunk cable branching device according to claim 2. Features an optical communication trunk cable.
JP2000029561A 1999-08-11 2000-02-07 Optical communication trunk cable branch and optical communication trunk cable Expired - Fee Related JP4053202B2 (en)

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