JP4100834B2 - Optical communication trunk cable and branching device for optical communication trunk cable - Google Patents

Optical communication trunk cable and branching device for optical communication trunk cable Download PDF

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JP4100834B2
JP4100834B2 JP22732399A JP22732399A JP4100834B2 JP 4100834 B2 JP4100834 B2 JP 4100834B2 JP 22732399 A JP22732399 A JP 22732399A JP 22732399 A JP22732399 A JP 22732399A JP 4100834 B2 JP4100834 B2 JP 4100834B2
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optical communication
trunk cable
communication trunk
sheath
holder
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JP2001051131A (en
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源 田村
邦彦 香田
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トヨクニ電線株式会社
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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および光通信幹線ケーブル用分岐具に関する。
【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０．２５ＵＶ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０．２５ＵＶ心線を構内光キャビネットＰＤに融着接続する作業を行わなければならず、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光通信ケーブルの配線を行なうことができ、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を目的としている。
【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、本発明は建物の上部から下部へ吊り下げ状態で使用される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本体と、この光通信幹線ケーブル本体の少なくとも１箇所以上の所定位置のシースを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の光心線あるいはテープ光心線と融着接続された先端部にコネクターが取付けられたＦＯケーブルと、前記光通信幹線ケーブル本体のシースが除去された部位の両端部のシースの外周部に設けられた、一方から前記ＦＯケーブルを通過させることができるホルダー、このホルダーに両端部が支持されたコイルスプリングおよび少なくともこのコイルスプリングと前記ホルダーの外周部を覆う収縮チューブあるいは接着テープとからなる分岐具とで光通信幹線ケーブルを構成している。
【０００７】
また、本発明は光通信幹線ケーブル本体の分岐のためにシースが除去された部位の両端部のシースの外周部に取付けられる、少なくとも一方にＦＯケーブルの通過部を有するホルダーと、このホルダーに両端部が支持されるコイルスプリングと、このコイルスプリングおよび前記ホルダーの外周部を覆う収縮チューブあるいは接着テープとで光通信幹線ケーブル用分岐具を構成している。
【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はオフィビル等の建物２の上部の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と融着接続されるとともに、保護チューブ９で覆われた先端部に光配線ボックス１０、１０、１０、１０、１０に接続できるコネクター１１、１１、１１、１１が取付けられた５個のＦＯケーブル１２、１２、１２、１２、１２と、この５個のＦＯケーブル１２、１２、１２、１２、１２の融着接続部を図６に示すように該ＦＯケーブル１２、１２、１２、１２、１２の先端部を外方へ突出させた状態で可撓可能に覆う分岐具１３、１３、１３、１３、１３とで構成されている。
【００１０】
前記分岐具１３は図７ないし図９に示すように、２分割された内壁面に除去されたシース８の端部８ａと係合する係合部１４が形成され、内側端部にコイルスブリング受け部１５が形成されるとともに、外周部に前記ＦＯケーブル１２を挿入させる溝状の通過部１６が形成された一対のホルダー１７、１７と、この一対のホルダー１７、１７のコイルスプリング受け部１５、１５に両端部が支持されたコイルスプリング１８と、このコイルスプリング１８、前記一対のホルダー１７、１７および該一対のホルダー１７、１７近傍のシース８、８の外周部を覆う必要に応じて内壁面に接着剤１９が付着された熱収縮チューブ２０とで構成されている。
【００１１】
このように構成された分岐具１３は、あらかじめ光通信幹線ケーブル本体５にコイルスプリング１８と熱収縮チューブ２０を挿入しておき、ＦＯケーブル１２の接続が完了した所で、除去したシース８のＦＯケーブル１２を外方へ突出させる側の端部にホルダー１７を位置させ、ＦＯケーブル１２を通過部１６に位置させる。
【００１２】
しかる後、コイルスプリング１８の一端部を取付けたホルダー１７のコイルスプリング受け部１５に支持させるとともに、コイルスプリング１８の他方を除去したシース８の他方の端部８ａにホルダー１７を取付け、該ホルダー１７のコイルスプリング受け部１５に支持させる。次に、コイルスプリング１８、ホルダー１７、１７の上部に熱収縮チューブ２０を位置させ、熱を加えて収縮させ、該熱等の熱収縮チューブ２０を移動不能に取付ける。
【００１３】
このようにして製造された光通信幹線ケーブル１はＦＯケーブル１２、１２、１２、１２、１２の先端部のコネクター１１、１１、１１、１１部分をそれぞれ保護ケース等で覆って光通信幹線ケーブル本体５にテープ等で固定した状態で巻き付け、ドラムに巻き取り輸送する。
【００１４】
【発明の異なる実施の形態】
次に、図１０ないし図２１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。
【００１５】
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、一方に係合片２１、２１と、他方にこの係合片２１、２１と係合する係合部２２、２２を有し、かつ内部に開口するＦＯケーブル１２を収納する溝状の通過部１６Ａを形成した２分割されたホルダー１７Ａ、１７Ａを使用した分岐具１３Ａ、１３Ａ、１３Ａ、１３Ａ、１３Ａを用いた点で、このように構成した分岐具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。
【００１６】
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、一方に薄肉のヒンジ部２３を設けた開閉可能なホルダー１７Ｂ、１７Ｂを使用した分岐具１３Ｂ、１３Ｂ、１３Ｂ、１３Ｂ、１３Ｂを用いた点で、このように構成した分岐具１３Ｂ、１３Ｂ、１３Ｂ、１３Ｂ、１３Ｂを用い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。
【００１７】
図１８ないし図２１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、熱収縮チューブの代わりに接着テープ２４を巻き付けて使用した点で、このように接着テープ２４を使用した分岐具１３Ｃを用いた光通信幹線ケーブル１Ｃ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。
【００１８】
なお、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。
さらに、前記本発明の実施の形態で使用した、熱収縮チューブの代わりに、熱以外の光り等によって収縮する収縮チューブを用いても良い。
【００１９】
【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。
【００２０】
（１）建物の上部から下部へ吊り下げ状態で使用される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本体と、この光通信幹線ケーブル本体の少なくとも１箇所以上の所定位置のシースを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の光心線あるいはテープ光心線と融着接続された先端部にコネクターが取付けられたＦＯケーブルと、前記光通信幹線ケーブル本体のシースが除去された部位の両端部のシースの外周部に設けられた、一方から前記ＦＯケーブルを通過させることができるホルダー、このホルダーに両端部が支持されたコイルスプリングおよび少なくともこのコイルスプリングと前記ホルダーの外周部を覆う収縮チューブあるいは接着テープとからなる分岐具とで構成されているので、設置現場で光通信幹線ケーブル本体とＦＯケーブルとを融着接続しなくてもよい。
したがって、現場での配線作業が簡単で、短時間に行なうことができる。
【００２１】
（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ＦＯケーブルに接続する分岐部は工場で取付けるので、品質保証が確実にできる。
したがって、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。
【００２２】
（３）前記（１）によって、分岐部をコイルスプリングと収縮チューブあるいは接着テープで覆っているので、可撓性を持たせることができる。
したがって、輸送時に従来と同様に巻き付けドラム等に巻き取って輸送することができる。
【００２３】
（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部の説明図。
【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部の説明図。
【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説明図。
【図２１】本発明の第４の実施の形態の分岐具の分解図。
【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：光配線ボックス、 １１：コネクター、
１２：ＦＯケーブル、 １３、１３Ａ、１３Ｂ、１３Ｃ：分岐具、
１４：係合部、 １５：コイルスプリング受け部、
１６、１６Ａ：通過部、 １７、１７Ａ、１７Ｂ：ホルダー、
１８：コイルスプリング、１９：接着剤、
２０：熱収縮チューブ、 ２１：係合片、
２２：係合部、 ２３：ヒンジ部、
２４：接着テープ。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical communication main line cable and an optical communication main line branching device used when an optical communication cable is installed in a building such as an office building.
[0002]
[Prior art]
Conventionally, in an office building or the like, a 0.25 UV core of an optical communication trunk cable suspended from the upper part of the building connected to a local optical cabinet PT connected to an optical communication trunk cable from the outside provided in the basement. 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 is a work in which a sheath at a predetermined position is removed at an installation site, and the 0.25 UV core wire of the optical communication trunk cable is fused and connected to the indoor optical cabinet PD. There is a drawback that the work is difficult and time-consuming.
[0004]
In view of the conventional drawbacks as described above, the present invention can be carried out at the factory without carrying out a tough work such as fusion splicing at the site, and the optical communication cable can be wired by a simple operation at the site. An object of the present invention is to provide an optical communication trunk cable and a branching device for the optical communication trunk cable that can be transferred from the factory to the site in substantially the same manner as before.
[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 body in which a plurality of optical fibers or tape optical fibers used in a suspended state from the upper part to the lower part of a building are covered with a sheath, A connector is attached to the optical fiber or the optical fiber of the optical communication trunk cable body that is set in advance by removing the sheath at a predetermined position of at least one position of the communication trunk cable body. FO cable and a holder provided on the outer periphery of the sheath at both ends of the part where the sheath of the optical communication trunk cable body is removed, the holder from which the FO cable can be passed from one end, A supported coil spring and at least the coil spring and a shrinkable tube or adhesive tape covering the outer periphery of the holder Constitute an optical communication trunk cable and 岐具.
[0007]
Further, the present invention provides a holder having at least one FO cable passing portion attached to the outer periphery of the sheath at both ends of the portion where the sheath has been removed for branching of the optical communication trunk cable main body, A branching device for an optical communication trunk cable is constituted by a coil spring in which the portion is supported and a shrinkable tube or adhesive tape covering the outer periphery of the coil spring and the holder.
[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. An optical wiring box is attached to the front end portion of the optical communication trunk cable body 5 that has been set in advance and fusion bonded to the optical fiber cores 4, 4, 4, 4, 4, and covered with the protective tube 9. 10, 10, 10, 10, 10 FO cables 12, 12, 12, 12, 12 to which connectors 11, 11, 11, 11 can be connected, and these 5 FO cables 12, 12, As shown in FIG. 6, the branching device 13 that flexibly covers the fusion connecting portion of the 12, 12, 12 in a state where the tip portion of the FO cable 12, 12, 12, 12, 12 protrudes outward, 13, 13, 13, and 13.
[0010]
As shown in FIGS. 7 to 9, the branching tool 13 is formed with an engaging portion 14 that engages with the end 8a of the sheath 8 that is removed on the inner wall surface that is divided into two parts, and a coil shredding receiver is provided at the inner end. A pair of holders 17 and 17 in which a groove-like passage portion 16 for inserting the FO cable 12 is formed on the outer peripheral portion, and a coil spring receiving portion 15 of the pair of holders 17 and 17. 15, a coil spring 18 supported at both ends, and a coil spring 18, a pair of holders 17, 17, and a pair of holders 17, 17. And a heat shrinkable tube 20 to which an adhesive 19 is attached.
[0011]
In the branching device 13 configured as described above, the coil spring 18 and the heat shrinkable tube 20 are inserted in advance into the optical communication trunk cable body 5 and the connection of the FO cable 12 is completed. The holder 17 is positioned at the end on the side from which the cable 12 protrudes outward, and the FO cable 12 is positioned at the passage portion 16.
[0012]
Thereafter, the coil spring 18 is supported by the coil spring receiving portion 15 of the holder 17 to which one end of the coil spring 18 is attached, and the holder 17 is attached to the other end 8a of the sheath 8 from which the other of the coil spring 18 is removed. The coil spring receiving portion 15 is supported. Next, the heat-shrinkable tube 20 is positioned on the coil spring 18 and the holders 17 and 17 and is shrunk by applying heat, and the heat-shrinkable tube 20 such as the heat is attached so as not to move.
[0013]
The optical communication trunk cable 1 manufactured in this way covers the connectors 11, 11, 11, 11 at the tip of the FO cables 12, 12, 12, 12, 12 with a protective case etc. Wound in a state of being fixed to tape 5 or the like, wound up and transported to a drum.
[0014]
Different Embodiments of the Invention
Next, different embodiments of the present invention shown in FIGS. 10 to 21 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.
[0015]
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 the engagement pieces 21 and 21 are on one side and the engagement is on the other side. Branch using two divided holders 17A and 17A having engaging portions 22 and 22 that engage with the pieces 21 and 21 and having a groove-like passage portion 16A that houses the FO cable 12 that opens inside. The optical communication trunk cable 1A using the branching devices 13A, 13A, 13A, 13A, and 13A configured in this way is also used in the first embodiment of the present invention in that the tools 13A, 13A, 13A, 13A, and 13A are used. The same effects as those of the embodiment can be obtained.
[0016]
The third embodiment of the present invention shown in FIGS. 14 to 17 is mainly different from the first embodiment of the present invention in that it can be opened and closed with a thin hinge 23 on one side. In the point using the branching tool 13B, 13B, 13B, 13B, 13B using the 17B, the optical communication trunk cable 1B using the branching tool 13B, 13B, 13B, 13B, 13B configured in this way, The same effects as those of the first embodiment of the present invention can be obtained.
[0017]
The fourth embodiment of the present invention shown in FIGS. 18 to 21 is mainly different from the first embodiment of the present invention in that an adhesive tape 24 is wound around instead of the heat shrinkable tube. Thus, even in the optical communication trunk cable 1C using the branching tool 13C using the adhesive tape 24 as described above, the same operational effects as those of the first embodiment of the present invention can be obtained.
[0018]
In each of the embodiments of the present invention, the optical communication trunk cable main body 5 using the tape slot type has been described. However, the present invention is not limited to this, and a plurality of optical fibers are bundled with a sheath. Covered ones may be used, and 10, 15, 25, and 50 optical fiber cores are used, and branching devices 13, 13A, 13B, and 13C are not provided on the respective floors. You may provide so that it may be located on a floor.
Furthermore, instead of the heat-shrinkable tube used in the embodiment of the present invention, a shrinkable tube that shrinks by light other than heat may be used.
[0019]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
[0020]
(1) An optical communication trunk cable body in which a plurality of optical fibers or tape optical fibers used in a suspended state from the upper part to the lower part of a building are covered with a sheath, and at least one portion of the optical communication trunk cable body The FO cable in which a connector is attached to the optical fiber or tape optical fiber of the optical communication trunk cable body set in advance by removing the sheath at the predetermined position, and the optical communication A holder provided on the outer peripheral portion of the sheath at both ends of the portion where the sheath of the main cable body is removed, the FO cable can be passed from one side, a coil spring having both ends supported by the holder, and at least this Because it consists of a coil spring and a branching tool consisting of a shrink tube or adhesive tape covering the outer periphery of the holder The optical communication trunk cable body and FO cable installation site may not be fusion spliced.
Therefore, wiring work on site is simple and can be performed in a short time.
[0021]
(2) According to the above (1), the optical core of the optical communication trunk cable main body or the branch portion connected to the tape optical core and the FO cable is installed at the factory, so that quality assurance can be ensured.
Therefore, it is possible to improve the reliability of the communication trunk cable.
[0022]
(3) Since the branch portion is covered with the coil spring and the shrinkable tube or the adhesive tape according to (1), flexibility can be provided.
Therefore, it can be wound and transported on a winding drum or the like at the time of transportation.
[0023]
(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 a branching unit according to the first embodiment of this 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 a branching unit according to the third embodiment of this 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 of a branching unit according to the fourth embodiment of this invention.
FIG. 21 is an exploded view of a branching tool according to a fourth embodiment of the present invention.
[Explanation of symbols]
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: Optical wiring box 11: Connector
12: FO cable 13, 13A, 13B, 13C: branching tool,
14: engaging portion, 15: coil spring receiving portion,
16, 16A: passing portion, 17, 17A, 17B: holder,
18: Coil spring, 19: Adhesive,
20: heat shrinkable tube, 21: engagement piece,
22: engagement part, 23: hinge part,
24: Adhesive tape.

Claims (4)

建物の上部から下部へ吊り下げ状態で使用される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本体と、この光通信幹線ケーブル本体の少なくとも１箇所以上の所定位置のシースを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の光心線あるいはテープ光心線と融着接続された先端部にコネクターが取付けられたＦＯケーブルと、前記光通信幹線ケーブル本体のシースが除去された部位の両端部のシースの外周部に設けられた、一方から前記ＦＯケーブルを通過させることができるホルダー、このホルダーに両端部が支持されたコイルスプリングおよび少なくともこのコイルスプリングと前記ホルダーの外周部を覆う収縮チューブあるいは接着テープとからなる分岐具とを備えることを特徴とする光通信幹線ケーブル。An optical communication trunk cable body in which a plurality of optical fiber cores or tape optical fiber cables used in a suspended state from the upper part to the lower part of the building are covered with a sheath, and at least one predetermined part of the optical communication trunk cable body An FO cable in which a connector is attached to the optical fiber or tape optical fiber of the optical communication trunk cable body that has been preset by removing the sheath of the position, and the optical communication trunk cable body A holder provided on the outer periphery of the sheath at both ends of the portion from which the sheath of the sheath is removed, from which the FO cable can pass from one side, a coil spring having both ends supported by the holder, and at least the coil spring; A light comprising a shrinking tube or an adhesive tape covering the outer periphery of the holder Shin trunk cable. 建物の上部から下部へ吊り下げ状態で使用される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本体と、この光通信幹線ケーブル本体の前記建物の各階に位置する部位のシースを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の光心線あるいはテープ光心線と融着接続された先端部にコネクターが取付けられた複数個のＦＯケーブルと、前記光通信幹線ケーブル本体のシースが除去されたそれぞれの部位の両端部のシースの外周部に設けられた、一方から前記ＦＯケーブルを通過させることができる複数個のホルダー、この複数個のホルダーに両端部が支持された複数個のコイルスプリングおよびこのコイルスプリングと前記ホルダーの外周部を覆う内壁面に接着剤が付着された複数個の収縮チューブあるいは接着テープとからなる分岐具とを備えることを特徴とする光通信幹線ケーブル。An optical communication trunk cable body in which a plurality of optical fiber cores or tape optical fiber cables used in a suspended state from the upper part to the lower part of the building are covered with a sheath, and each optical communication trunk cable body located on each floor of the building A plurality of FO cables in which connectors are attached to the optical fiber or tape optical fiber of the optical communication trunk cable body that has been preset by removing the sheath of the optical fiber, and the optical fiber; A plurality of holders provided on the outer peripheral portion of the sheath at both ends of each portion where the sheath of the communication trunk cable body is removed, a plurality of holders through which the FO cable can be passed from both ends, A plurality of coil springs that support the coil, and a plurality of contraction tubes in which an adhesive is attached to an inner wall surface that covers the outer periphery of the coil spring and the holder. Alternatively the optical communication trunk cable, characterized in that it comprises a branching device consisting of an adhesive tape. 光通信幹線ケーブル本体の分岐のためにシースが除去された部位の両端部のシースの外周部に取付けられる、少なくとも一方にＦＯケーブルの通過部を有するホルダーと、このホルダーに両端部が支持されるコイルスプリングと、このコイルスプリングおよび前記ホルダーの外周部を覆う収縮チューブあるいは接着テープとからなることを特徴とする光通信幹線ケーブル用分岐具。A holder that is attached to the outer peripheral portion of the sheath at both ends of the portion where the sheath has been removed for branching of the optical communication trunk cable body, and at least one end of the FO cable passing portion, and both ends are supported by this holder A branching device for an optical communication trunk cable comprising a coil spring and a shrinkable tube or adhesive tape covering the coil spring and the outer periphery of the holder. 光通信幹線ケーブル本体の分岐のためにシースが除去された部位の両端部のシースの外周部に２分割あるいはヒンジ部材を介して開放可能に形成された、少なくとも一方にＦＯケーブルを通過させる溝状の通過部を有するホルダーと、このホルダーに両端部が支持されるコイルスプリングと、このコイルスプリングおよび前記ホルダーの外周部を覆う内壁面に接着剤が付着された収縮チューブあるいは接着テープとからなることを特徴とする光通信幹線ケーブル用分岐具。Groove shape that allows the FO cable to pass through at least one of the outer peripheral portions of the sheath at both ends of the portion where the sheath has been removed for branching of the optical communication trunk cable body so that it can be divided into two or opened via a hinge member A holder having a passage portion, a coil spring supported at both ends of the holder, and a shrink tube or an adhesive tape having an adhesive attached to an inner wall surface covering the outer periphery of the coil spring and the holder. An optical communication trunk cable branching device characterized by
JP22732399A 1999-08-11 1999-08-11 Optical communication trunk cable and branching device for optical communication trunk cable Expired - Fee Related JP4100834B2 (en)

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JP2005516237A (en) * 2002-01-23 2005-06-02 タイコ・エレクトロニクス・レイケム・ナムローゼ・フェンノートシャップ Fiber optic tube sealing
JP3910112B2 (en) 2002-06-21 2007-04-25 シャープ株式会社 Camera phone
US7088893B2 (en) * 2003-11-26 2006-08-08 Corning Cable Systems Llc Pre-connectorized fiber optic distribution cable having multifiber connector
US7155093B2 (en) * 2004-05-24 2006-12-26 Corning Cable Systems Llc Distribution cable having overmolded mid-span access location with preferential bending
US7330621B2 (en) * 2004-05-24 2008-02-12 Corning Cable Systems Llc Flexible optical closure and other flexible optical assemblies
US7127143B2 (en) * 2004-05-24 2006-10-24 Corning Cable Systems Llc Distribution cable assembly having overmolded mid-span access location
WO2006093836A1 (en) * 2005-02-28 2006-09-08 Corning Cable Systems Llc Distribution fiber optic cables having at least one access location and methods of making the same
JP4751212B2 (en) * 2006-02-16 2011-08-17 住友電気工業株式会社 Optical fiber branch cable, wiring method thereof, and providing method thereof
US7590321B2 (en) * 2006-03-09 2009-09-15 Adc Telecommunications, Inc. Mid-span breakout with helical fiber routing
JP2008191600A (en) * 2007-02-08 2008-08-21 Toyokuni Electric Cable Co Ltd Method of installing optical trunk cable in building
EP2157461A1 (en) 2008-08-21 2010-02-24 CCS Technology Inc. Preassembled optical cable and method for manufacturing preassemled optical cables
JP6419138B2 (en) * 2016-12-05 2018-11-07 株式会社フジクラ Optical fiber cord with connector

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