JP2004061713A - Closure for optical cable connection - Google Patents

Closure for optical cable connection Download PDF

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Publication number
JP2004061713A
JP2004061713A JP2002217997A JP2002217997A JP2004061713A JP 2004061713 A JP2004061713 A JP 2004061713A JP 2002217997 A JP2002217997 A JP 2002217997A JP 2002217997 A JP2002217997 A JP 2002217997A JP 2004061713 A JP2004061713 A JP 2004061713A
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Japan
Prior art keywords
closure
optical
connector
cable
optical cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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JP2002217997A
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Japanese (ja)
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JP3814234B2 (en
Inventor
Hisaya Iwamoto
岩本　悠也
Tatsuya Ishihara
石原　竜也
Mitsuharu Koshiyama
越山　光治
Ikuya Tsuruta
鶴田　育也
Yoshihisa Oshima
大島　義久
Koji Machino
町野　弘二
Masahiro Hashiguchi
橋口　正弘
Masafumi Awamori
粟森　雅史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Japan Recom Ltd
Nippon Tsushin Denzai KK
Original Assignee
Nippon Telegraph and Telephone Corp
Japan Recom Ltd
Nippon Tsushin Denzai KK
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Application filed by Nippon Telegraph and Telephone Corp, Japan Recom Ltd, Nippon Tsushin Denzai KK filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2002217997A priority Critical patent/JP3814234B2/en
Publication of JP2004061713A publication Critical patent/JP2004061713A/en
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Publication of JP3814234B2 publication Critical patent/JP3814234B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor installation type closure for optical cable splicing which can easily and securely connect and protect optical cables with connectors. <P>SOLUTION: The closure 1 has a closure body 4 and a cover for protecting the inside of the closure body 4. Branch parts 10 of optical cables 2 and 3 with optical connectors which are led in the closure body 4 are fixed. In the closure body 4, an adapter part 16 to which optical connectors 11 of the optical fiber cables 2 and 3 with connectors are connected is arranged. In the closure body 4, an excessive-length pressure plate 25 is arranged which forms an excessive-length storage part for storing an excessive-length part of an optical cord 9 of the optical cables 2 and 3 with connectors, and this excessive-length pressure plate 25 is provided with an R guide 26 for guiding the excessive-length part of the optical cord 9. On the reverse surface of the closure body 4, suspension wire fitting metal for fitting the closure 1 to a suspension wire is provided. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、光通信ケーブル等の接続に用いられる光ケーブル接続用クロージャに関するものである。
【０００２】
【従来の技術】
一般に光ケーブル接続用クロージャとしては、光ケーブルから引き出された光コード同士を接続するコネクタ等の接続部と、光コードの余長部分を巻回して収納する余長収納部とを備えたものが知られている。
【０００３】
【発明が解決しようとする課題】
従来、光ケーブルの配線・接続作業が容易に行える屋外設置対応のコンパクトな光ケーブル接続用クロージャはあったが、そのようなクロージャにおいて光コネクタ付き光ケーブルの導入を考慮したものはほとんど無かった。
【０００４】
本発明の目的は、コネクタ付き光ケーブル同士を容易かつ確実に接続して保護することができる屋外設置型の光ケーブル接続用クロージャを提供することである。
【０００５】
【課題を解決するための手段】
本発明の光ケーブル接続用クロージャは、複数本のコネクタ付き光ケーブルが導入されるクロージャ本体と、クロージャ本体内に導入された各コネクタ付き光ケーブルをクロージャ本体に固定するためのケーブル固定手段と、クロージャ本体内に設けられ、各コネクタ付き光ケーブルのコネクタが接続されるアダプタ部と、クロージャ本体内に設けられ、各コネクタ付き光ケーブルの余長が収納されるケーブル余長収納部と、クロージャ本体の内部を保護するためのカバーと、クロージャ本体を吊り線に取り付けるための取付手段とを備えることを特徴とするものである。
【０００６】
このような光ケーブル接続用クロージャにおいては、クロージャ本体内にコネクタ付き光ケーブルを導入し、ケーブル固定手段によりコネクタ付き光ケーブルをクロージャ本体に固定する。そして、必要に応じてコネクタ付き光ケーブルの余長をケーブル余長収納部に収納し、コネクタ付き光ケーブルのコネクタをアダプタ部に接続する。そして、クロージャ本体にカバーを取り付ける。これにより、複数本のコネクタ付き光ケーブルをクロージャ本体内に安定した状態で収納した上で、コネクタ付き光ケーブル同士を容易に接続することができる。また、カバーを設けることにより、光ケーブル接続用クロージャを屋外設置した状態において、クロージャ内への水の浸入を防ぐことができる。さらに、取付手段により、光ケーブル接続用クロージャを容易に吊り線に取り付けることができる。
【０００７】
好ましくは、アダプタ部は、上下２段に配置されており、上段のアダプタ部は、クロージャ本体に固定されたアダプタ取付部材に回動可能に支持されている。このようにアダプタ部を上下２段構造とすることにより、スペース効率が向上するため、光ケーブル接続用クロージャの小型化を図ることができる。また、上段のアダプタ部にコネクタ付き光ケーブルのコネクタが接続されている状態で、下段のアダプタ部にコネクタ付き光ケーブルのコネクタを着脱するときには、上段のアダプタ部を回動させることで、コネクタの着脱作業を容易に行うことができる。
【０００８】
また、好ましくは、ケーブル余長収納部は、コネクタ付き光ケーブルの余長をガイドするための湾曲状のガイド面を有するケーブルガイドと、ケーブルガイドに回動自在に結合され、ガイド面にガイドされたコネクタ付き光ケーブルの余長を保護するケーブル保護板とを有する。この場合には、コネクタ付き光ケーブルの余長は湾曲状のガイド面に沿って引き回される事になるため、コネクタ付き光ケーブルに急激な曲げを与えることを防止できる。また、コネクタ付き光ケーブルの余長をガイド面に沿って引き回した後、ケーブル保護板を回動させてコネクタ付き光ケーブルの余長を保護することで、クロージャ本体にカバーを取り付ける時に、コネクタ付き光ケーブルの余長を挟み込んでしまうことを防止できる。
【０００９】
さらに、好ましくは、取付手段は、吊り線を把持する１対の把持部材を有し、各把持部材の一方の側面には、吊り線と係合する第１把持用溝部が設けられ、各把持部材の他方の側面には、吊り線と係合し第１把持用溝部よりも小さい寸法を有する第２把持用溝部が設けられている。この場合、光ケーブル接続用クロージャを太い吊り線に取り付けるときは、１対の把持部材の各第１把持用溝部において吊り線を把持し、光ケーブル接続用クロージャを細い吊り線に取り付けるときは、１対の把持部材の各第２把持用溝部において吊り線を把持する。このように径の異なる複数の吊り線に対して一組の把持部材で対処可能となるため、吊り線の径に対応した多くの把持部材を製作しなくて済み、コスト的に有利である。
【００１０】
【発明の実施の形態】
以下、本発明に係る光ケーブル接続用クロージャの好適な実施形態について図面を参照して説明する。
【００１１】
図１は、本発明に係る光ケーブル接続用クロージャの一実施形態の内部構造を示す平面図であり、図２は、その光ケーブル接続用クロージャの分解側面図である。これらの図において、本実施形態の光ケーブル接続用クロージャ（以下、単にクロージャという）１は、上部側のコネクタ付き光ケーブル２と下部側のコネクタ付き光ケーブル３と接続部分を保護するものである。また、クロージャ１は屋外設置型であり、電柱またはケーブル支持線（吊り線）に取り付けられる。
【００１２】
クロージャ１は、矩形状のクロージャ本体４と、このクロージャ本体４の内部を保護するためのカバー５とを有している。カバー５は、防水性を有している。これにより、クロージャ１を屋外設置した状態においてクロージャ本体４の内部に水が入り込むことは無い。
【００１３】
このクロージャ本体４の一端部の左右両側には、上部側のコネクタ付き光ケーブル２が導入されるケーブル導入部６と、下部側のコネクタ付き光ケーブル３が導入されるケーブル導入部７とがそれぞれ設けられている。
【００１４】
コネクタ付き光ケーブル２，３は、図３に示すように、多心光ケーブル８と、この多心光ケーブル８を複数本の光コード９に分岐させる分岐部１０と、各光コード９の先端に取り付けられたＳＣ型の光コネクタ１１とを有している。分岐部１０の上面および下面には、図４に示すように分岐部１０を２段に重ねた時に分岐部１０の長手方向に対して位置決め拘束するための複数の突起部１２が設けられている。
【００１５】
このようなコネクタ付き光ケーブル２，３の分岐部１０は、クロージャ本体４内におけるケーブル導入部６，７の近傍でクロージャ本体４に固定されている。図４及び図５に示すように、クロージャ本体４には受け板１３が固定され、この受け板１３上にコネクタ付き光ケーブル２，３の分岐部１０が配置されている。受け板１３には、ネジ穴（図示せず）を有する２つのケーブル固定材１４が連結されており、このケーブル固定材１４のネジ穴にネジ１５をねじ込んで分岐部１０を押し付けることで、分岐部１０をクロージャ本体４に固定する。これにより、コネクタ付き光ケーブル２，３をクロージャ本体４内に安定した状態で収納することができる。
【００１６】
図１及び図２に戻り、クロージャ本体４の中央部の左右両側には、コネクタ付き光ケーブル２，３の光コネクタ１１が接続されるアダプタ部１６が上下２段にそれぞれ配置されている。このようにアダプタ部１６を２段重ねとすることにより、クロージャ本体４内の省スペース化を図ることができる。
【００１７】
各アダプタ部１６は、互いに対向した２対のアダプタ１７ａ，１７ｂを有している。そして、アダプタ部１６の一側（ここでは、ケーブル導入部６，７側）の２つのアダプタ１７ａに、コネクタ付き光ケーブル３の光コネクタ１１が並列に接続され、アダプタ部１６の他側の２つのアダプタ１７に、コネクタ付き光ケーブル２の光コネクタ１１が並列に接続される。アダプタ部１６の両側面には、アダプタ部１６をクロージャ本体４に取り付けるための突起部１８，１９がそれぞれ設けられている。そして、突起部１９の両側面には、図６に示すように、保持用凹部１９ａが設けられている。
【００１８】
クロージャ本体４には、上下２段に配置された２つのアダプタ部１６の突起部１８，１９をそれぞれ支持するアダプタ取付部材２０，２１が固定されている。アダプタ取付部材２１は、図６に示すように、Ｌ字型の基部２２を有し、この基部２２上に下段のアダプタ部１６が載置されている。これにより、コネクタ付き光ケーブル３の光コード９が通るためのスペースＳをアダプタ部１６の下方に確保している。
【００１９】
下段のアダプタ部１６の突起部１８，１９は、図６〜図８に示すように、ネジ２３によりアダプタ取付部材２０，２１にそれぞれ固定されている。一方、上段のアダプタ部１６の突起部１８は、図６及び図７に示すように、軸部２４を介してアダプタ取付部材２０に回動可能に取り付けられている。また、アダプタ取付部材２１には、図８に示すように、アダプタ部１６の突起部１９に形成された保持用凹部１９ａと嵌合する２つの保持用凸部２１ａが設けられている。
【００２０】
ここで、通常は、図６の２点鎖線で示すように、上段のアダプタ部１６の保持用凹部１９ａとアダプタ取付部材２１の保持用凸部２１ａとを嵌合させて、上段のアダプタ部１６を水平にしておく。コネクタ付き光ケーブル２，３の光コネクタ１１を下段のアダプタ部１６のアダプタ１７ａ，１７ｂに着脱するときは、図６の実線で示すように、上段のアダプタ部１６を上方に回動させる。これにより、上段のアダプタ部１６のアダプタ１７ａ，１７ｂに光コネクタ１１が接続されている状態であっても、下段のアダプタ部１６に対する光コネクタ１１の着脱作業を妨げることはない。
【００２１】
図１及び図２に戻り、クロージャ本体４における左右両側に配置されたアダプタ部１６の間には、コネクタ付き光ケーブル２，３の光コード９の余長を収納する余長収納部を形成するための余長押さえ板２５が配置されている。この余長押さえ板２５は、クロージャ本体４の一端から他端に向けて延在していると共に、光コード９の余長をガイドするための複数のＲガイド２６を有している。Ｒガイド２６は、光コード９の余長の曲げ半径を３０ｍｍ以上に保つような湾曲状のガイド面２６ａを有している。これにより、光コード９が自重で垂れ下がったときでも、光コード９に急な曲げが加わることはなく、光コード９の損傷が防止される。
【００２２】
クロージャ本体４におけるケーブル導入部６，７と反対側の端部に位置するＲガイド２６の上面には、図９に示すように、ヒンジ２７を介してケーブル保護板２８が回動自在に結合されている。このケーブル保護板２８は、Ｒガイド２６の外側のガイド面２６ａにガイドされた光コード９の余長を保護するためのものである。ケーブル保護板２８の先端部には、２つの爪部２９が設けられている。
【００２３】
光コード９の余長をＲガイド２６の外側のガイド面２６ａに沿って引き回したときは、ケーブル保護板２８を下方に倒す。そして、図１０に示すように、ケーブル保護板２８の爪部２９をクロージャ本体４内に入り込むようにクロージャ本体４に引っ掛ける。これにより、光コード９の余長は、外側のガイド面２６ａにおいて露出したままではなく、ケーブル保護板２８に保護された状態となる。従って、クロージャ本体４にカバー５を取り付ける時に、光コード９を挟み込むことが防止されるため、光コード９に損傷を与えることは無い。
【００２４】
図１及び図２に戻り、以上のようなクロージャ１において、上部側のコネクタ付き光ケーブル２と下部側のコネクタ付き光ケーブル３とを接続する場合は、まずコネクタ付き光ケーブル２，３をケーブル導入部６，７よりクロージャ本体４内に導入する。そして、コネクタ付き光ケーブル２，３の分岐部１０をネジ１５で押し付けて固定する。次いで、コネクタ付き光ケーブル２の光コード９をアダプタ部１６の下方のスペースＳ（図６参照）に通し、コネクタ付き光ケーブル２の光コネクタ１１をアダプタ部１６のアダプタ１７ｂに接続する。このとき、光コード９の余長が長い場合は、光コード９の余長を例えば８の字に配線した状態で、コネクタ１１をアダプタ１７ｂに接続する。また、コネクタ付き光ケーブル３のコネクタ１１をアダプタ部１６のアダプタ１７ａに接続する。このときも、光コード９の余長が長い場合は、光コード９の余長を例えば８の字に配線した状態で、コネクタ１１をアダプタ部１７ａに接続する。そして最後に、クロージャ本体４にカバー５を取り付ける。
【００２５】
このようにコネクタ付き光ケーブル２，３を容易にクロージャ本体４内に導入して接続することができる。また、コネクタ付き光ケーブル２，３をクロージャ本体４内にスペース効率良く収納することができるため、クロージャ１の小型化を図ることが可能となる。
【００２６】
また、クロージャ本体４の裏面には、クロージャ１を電柱に取り付けるための２本の電柱取付金具３０と、クロージャ１を鋼鉄製のケーブル支持線（吊り線）３１に取り付けるための吊り線取付金具３２とが設けられている。
【００２７】
クロージャ１を電柱に取り付けるときは、図１１に示すように、ステンレス等の取付バンド３３を、２本の電柱取付金具３０に通して電柱３４に巻き付けるようにする。
【００２８】
吊り線取付金具３２は、クロージャ本体４の裏面に固定された取付板３５を有し、この取付板３５には、吊り線３１を把持するための１対の把持部材３６がボルト３７により取り付けられている。各把持部材３６の一方の側面には、例えば外径が６〜１６．１ｍｍ程度の太い吊り線３１と係合する把持用溝部３８が設けられている。各把持部材３６の他方の側面には、把持用溝部３８よりも小さな寸法を有し、例えば外径が２．６〜３．２ｍｍ程度の細い吊り線３１と係合する把持用溝部３９が設けられている。
【００２９】
このような吊り線取付金具３２により、クロージャ１を太い吊り線３１に取り付けるときは、図１２に示すように、１対の把持部材３６の各把持用溝部３８を対面させて、各把持用溝部３８において吊り線３１を挟み、ボルト３７で各把持部材３６を締め付け固定する。一方、クロージャ１を細い吊り線３１に取り付けるときは、図１３に示すように、１対の把持部材３６を図１２に示す状態からひっくり返して各把持用溝部３９を対面させる。そして、各把持用溝部３９において吊り線３１を挟み、ボルト３７で各把持部材３６を締め付け固定する。
【００３０】
このように太い吊り線３１も細い吊り線３１も同一の把持部材３６で把持することができるため、吊り線３１の径に応じて把持部材を複数用意する必要は無い。従って、部品コストの削減を図ることができる。
【００３１】
なお、本発明に係る光ケーブル接続用クロージャは、上記実施形態に限定されるものではない。
【００３２】
例えば、図３に示すコネクタ付き光ケーブル２，３の代わりに、図１４に示すようなコネクタ付き光ケーブル４０を使用することもできる。コネクタ付き光ケーブル４０は、上記の分岐部１０とは構造の異なる分岐部４１を有している。この分岐部４１の上面には複数の位置決め用凹部４２が設けられ、分岐部４１の下面には複数の位置決め用凸部（図示せず）が設けられている。
【００３３】
このような分岐部４１をクロージャ本体４に固定する場合は、例えば、図１５に示すように、上面に複数の位置決め用凹部４３を有する土台４４を設ける。そして、分岐部４１の位置決め用凸部（図示せず）が土台４４の位置決め用凹部４３に嵌合するように分岐部４１を土台４４上に載置する。また、分岐部４１を２段重ねするときは、上段の分岐部４１の位置決め用凸部（図示せず）を下段の分岐部４１の位置決め用凹部４２に嵌合させる。その状態で、分岐部４１を押さえ付ける押さえ部４５ａが設けられたケーブル固定材４５をクロージャ本体４に取り付ける。
【００３４】
また、コネクタ付き光ケーブルの光コネクタとしては、上記のＳＣ型コネクタに限らず、ＦＣ型、ＬＣ型、ＭＵ型、ＭＰＯ型のコネクタ等を使用することも可能である。
【００３５】
【発明の効果】
本発明によれば、クロージャ本体内に導入された各コネクタ付き光ケーブルをクロージャ本体に固定するためのケーブル固定手段と、各コネクタ付き光ケーブルのコネクタが接続されるアダプタ部と、各コネクタ付き光ケーブルの余長が収納されるケーブル余長収納部とを設けたので、コネクタ付き光ケーブル同士を容易かつ確実に接続して保護することができる。
【図面の簡単な説明】
【図１】本発明に係る光ケーブル接続用クロージャの一実施形態の内部構造を示す平面図である。
【図２】図１に示す光ケーブル接続用クロージャの分解側面図である。
【図３】図１に示す光ケーブル接続用クロージャに適用されるコネクタ付き光ケーブルの一例を示す斜視図である。
【図４】図３に示すコネクタ付き光ケーブルの分岐部がクロージャ本体に固定された状態を示す断面図であって、クロージャ本体の側面側から見たときの図である。
【図５】図３に示すコネクタ付き光ケーブルの分岐部がクロージャ本体に固定された状態を示す断面図であって、クロージャ本体の端面側から見たときの図である。
【図６】図１に示すアダプタ部の正面図である。
【図７】図６に示す上段のアダプタ部が通常状態にあるときのＶＩＩ−ＶＩＩ線断面図である。
【図８】図６に示す上段のアダプタ部が通常状態にあるときのＶＩＩＩ−ＶＩＩＩ線断面図である。
【図９】図１に示す余長押さえ板に設けられたＲガイド及びケーブル保護板を示す斜視図である。
【図１０】図９に示すケーブル保護板により光コードが保護されている状態を示す斜視図である。
【図１１】図１及び図２に示す光ケーブル接続用クロージャが電柱に取り付けられている状態を示す平面図である。
【図１２】図１及び図２に示す光ケーブル接続用クロージャが太い吊り線に取り付けられている状態を示す側面図である。
【図１３】図１及び図２に示す光ケーブル接続用クロージャが細い吊り線に取り付けられている状態を示す側面図である。
【図１４】図１及び図２に示す光ケーブル接続用クロージャに適用されるコネクタ付き光ケーブルの他の例を示す斜視図である。
【図１５】図１４に示すコネクタ付き光ケーブルの分岐部がクロージャ本体に固定された状態を示す斜視図である
【符号の説明】
１…光ケーブル接続用クロージャ、２…コネクタ付き光ケーブル、３…コネクタ付き光ケーブル、４…クロージャ本体、５…カバー、９…光コード、１０…分岐部、１１…光コネクタ、１４…ケーブル固定材（ケーブル固定手段）、１５…ネジ（ケーブル固定手段）、１６…アダプタ部、１７ａ，１７ｂ…アダプタ、１８…突起部、１９…突起部、１９ａ…保持用凹部、２０…アダプタ取付部材、２１…アダプタ取付部材、２１ａ…保持用凸部、２４…軸部、２５…余長押さえ板（ケーブル余長収納部）、２６…Ｒガイド（ケーブルガイド）、２６ａ…ガイド面、２７…ヒンジ、２８…ケーブル保護板、３１…吊り線、３２…吊り線取付金具（取付手段）、３６…把持部材、３８…把持用溝部（第１把持用溝部）、３９…把持用溝部（第２把持用溝部）、４０…コネクタ付き光ケーブル、４１…分岐部、４５…ケーブル固定材（ケーブル固定手段）。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an optical cable connection closure used for connecting an optical communication cable or the like.
[0002]
[Prior art]
In general, as an optical cable connection closure, a closure having a connection portion such as a connector for connecting optical cords drawn out of an optical cable and an extra length storage portion for winding and storing an extra length portion of the optical cord is known. ing.
[0003]
[Problems to be solved by the invention]
Conventionally, there has been a compact optical cable connection closure for outdoor installation that can easily perform the wiring and connection work of the optical cable, but there has been almost no such closure considering the introduction of an optical cable with an optical connector.
[0004]
An object of the present invention is to provide an outdoor installation type optical cable connection closure which can easily and reliably connect and protect optical cables with connectors.
[0005]
[Means for Solving the Problems]
The closure for optical cable connection of the present invention comprises: a closure main body into which a plurality of optical cables with connectors are introduced; cable fixing means for fixing the optical cables with connectors introduced into the closure main body to the closure main body; And an adapter portion to which the connectors of the optical cables with connectors are connected, a cable extra length storage portion provided in the closure body for storing the extra length of the optical cables with connectors, and protects the inside of the closure body. And a mounting means for mounting the closure main body to the suspension line.
[0006]
In such an optical cable connection closure, an optical cable with a connector is introduced into the closure main body, and the optical cable with a connector is fixed to the closure main body by cable fixing means. Then, if necessary, the extra length of the optical cable with connector is stored in the extra cable length storage section, and the connector of the optical cable with connector is connected to the adapter section. Then, a cover is attached to the closure body. Thus, the optical cables with connectors can be easily connected to each other after the plurality of optical cables with connectors are stably housed in the closure main body. Further, by providing the cover, it is possible to prevent water from entering the closure when the optical cable connection closure is installed outdoors. Further, the attachment means enables the optical cable connection closure to be easily attached to the suspension line.
[0007]
Preferably, the adapter portions are arranged in two stages, upper and lower, and the upper adapter portion is rotatably supported by an adapter mounting member fixed to the closure body. Since the adapter section has a two-tiered structure, the space efficiency is improved, and the size of the optical cable connection closure can be reduced. In addition, when the connector of the optical cable with a connector is connected to and detached from the lower adapter section while the connector of the optical cable with the connector is connected to the upper adapter section, the work of attaching and detaching the connector is performed by rotating the upper adapter section. Can be easily performed.
[0008]
Preferably, the extra cable length storage portion is rotatably coupled to the cable guide having a curved guide surface for guiding the extra length of the optical cable with the connector, and is guided by the guide surface. A cable protection plate for protecting the extra length of the optical cable with the connector. In this case, since the extra length of the optical cable with connector is routed along the curved guide surface, it is possible to prevent the optical cable with connector from being sharply bent. Also, after the extra length of the optical cable with connector is routed along the guide surface, the cable protection plate is rotated to protect the extra length of the optical cable with connector. It is possible to prevent the extra length from being inserted.
[0009]
Furthermore, preferably, the attaching means has a pair of gripping members for gripping the hanging lines, and a first gripping groove engaging with the hanging lines is provided on one side surface of each gripping member. The other side surface of the member is provided with a second gripping groove portion that engages with the suspension wire and has a smaller size than the first gripping groove portion. In this case, when attaching the optical cable connection closure to the thick suspension line, the suspension line is gripped in each of the first holding grooves of the pair of gripping members, and when attaching the optical cable connection closure to the thin suspension line, one pair is used. The suspension line is gripped in each of the second gripping grooves of the gripping member. As described above, a plurality of suspension lines having different diameters can be dealt with by a set of gripping members, so that it is not necessary to manufacture many gripping members corresponding to the diameters of the suspension lines, which is advantageous in cost.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of an optical cable connection closure according to the present invention will be described with reference to the drawings.
[0011]
FIG. 1 is a plan view showing the internal structure of an embodiment of the optical cable connection closure according to the present invention, and FIG. 2 is an exploded side view of the optical cable connection closure. In these figures, an optical cable connection closure (hereinafter simply referred to as a closure) 1 of the present embodiment protects a connection portion between an optical cable 2 with a connector on the upper side and an optical cable 3 with a connector on the lower side. In addition, the closure 1 is of an outdoor installation type, and is attached to a utility pole or a cable support line (hanging line).
[0012]
The closure 1 has a rectangular closure body 4 and a cover 5 for protecting the inside of the closure body 4. The cover 5 has waterproofness. This prevents water from entering the inside of the closure main body 4 when the closure 1 is installed outdoors.
[0013]
On both left and right sides of one end of the closure body 4, a cable introduction section 6 into which the upper optical cable with connector 2 is introduced and a cable introduction section 7 into which the lower optical cable with connector 3 is introduced, respectively. ing.
[0014]
As shown in FIG. 3, the optical cables with connectors 2 and 3 are attached to a multi-core optical cable 8, a branch portion 10 for branching the multi-core optical cable 8 into a plurality of optical cords 9, and a tip of each optical cord 9. And an optical connector 11 of the SC type. As shown in FIG. 4, a plurality of protrusions 12 are provided on the upper surface and the lower surface of the branch portion 10 for positioning and restraining the branch portion 10 in the longitudinal direction when the branch portion 10 is stacked in two stages. .
[0015]
The branch portions 10 of the optical cables 2 and 3 with connectors are fixed to the closure body 4 in the vicinity of the cable introduction sections 6 and 7 in the closure body 4. As shown in FIGS. 4 and 5, a receiving plate 13 is fixed to the closure main body 4, and the branch portions 10 of the optical cables with connectors 2 and 3 are arranged on the receiving plate 13. Two cable fixing members 14 each having a screw hole (not shown) are connected to the receiving plate 13. A screw 15 is screwed into the screw hole of the cable fixing member 14, and the branch portion 10 is pressed. The part 10 is fixed to the closure body 4. Thereby, the optical cables with connectors 2 and 3 can be stably stored in the closure main body 4.
[0016]
Returning to FIGS. 1 and 2, adapter sections 16 to which the optical connectors 11 of the optical cables with connectors 2 and 3 are connected are arranged in upper and lower stages on the left and right sides of the center of the closure body 4. By thus arranging the adapter section 16 in two stages, space saving in the closure main body 4 can be achieved.
[0017]
Each adapter section 16 has two pairs of adapters 17a and 17b facing each other. Then, the optical connectors 11 of the optical cable with connector 3 are connected in parallel to the two adapters 17a on one side of the adapter section 16 (here, the cable introduction sections 6 and 7), and the two The optical connector 11 of the optical cable with connector 2 is connected to the adapter 17 in parallel. Protrusions 18 and 19 for attaching the adapter 16 to the closure body 4 are provided on both side surfaces of the adapter 16 respectively. As shown in FIG. 6, holding recesses 19 a are provided on both side surfaces of the protrusion 19.
[0018]
Adapter mounting members 20 and 21 that support the projections 18 and 19 of the two adapter portions 16 arranged in two stages vertically are fixed to the closure body 4. As shown in FIG. 6, the adapter mounting member 21 has an L-shaped base portion 22, and the lower adapter portion 16 is placed on the base portion 22. Thus, a space S for the optical cord 9 of the optical cable with connector 3 to pass therethrough is secured below the adapter section 16.
[0019]
The protruding portions 18 and 19 of the lower adapter portion 16 are fixed to the adapter mounting members 20 and 21 by screws 23 as shown in FIGS. On the other hand, the projection 18 of the upper adapter 16 is rotatably attached to the adapter attachment member 20 via the shaft 24 as shown in FIGS. As shown in FIG. 8, the adapter mounting member 21 is provided with two holding projections 21 a that fit into the holding recesses 19 a formed on the projections 19 of the adapter 16.
[0020]
Here, usually, as shown by a two-dot chain line in FIG. 6, the holding concave portion 19a of the upper adapter portion 16 and the holding convex portion 21a of the adapter mounting member 21 are fitted to each other, and the upper adapter portion 16 Is horizontal. When the optical connectors 11 of the optical cables 2 and 3 with connectors are attached to and detached from the adapters 17a and 17b of the lower adapter section 16, the upper adapter section 16 is rotated upward as shown by the solid line in FIG. Thus, even when the optical connector 11 is connected to the adapters 17a and 17b of the upper adapter section 16, the work of attaching and detaching the optical connector 11 to and from the lower adapter section 16 is not hindered.
[0021]
Returning to FIG. 1 and FIG. 2, between the adapter portions 16 arranged on both right and left sides of the closure body 4, an extra length storage portion for storing the extra length of the optical cord 9 of the optical cables with connectors 2 and 3 is formed. The extra length holding plate 25 is disposed. The extra length pressing plate 25 extends from one end of the closure body 4 to the other end, and has a plurality of R guides 26 for guiding the extra length of the optical cord 9. The R guide 26 has a curved guide surface 26a that keeps the extra bending radius of the optical cord 9 at 30 mm or more. As a result, even when the optical cord 9 hangs down under its own weight, the optical cord 9 is not sharply bent, and the optical cord 9 is prevented from being damaged.
[0022]
As shown in FIG. 9, a cable protection plate 28 is rotatably connected to an upper surface of an R guide 26 located at an end of the closure main body 4 opposite to the cable introduction portions 6 and 7 via a hinge 27. ing. The cable protection plate 28 is for protecting the extra length of the optical cord 9 guided by the guide surface 26a outside the R guide 26. Two claw portions 29 are provided at the tip of the cable protection plate 28.
[0023]
When the extra length of the optical cord 9 is routed along the guide surface 26a outside the R guide 26, the cable protection plate 28 is turned down. Then, as shown in FIG. 10, the hook 29 of the cable protection plate 28 is hooked on the closure main body 4 so as to enter the inside of the closure main body 4. Thus, the extra length of the optical cord 9 is not exposed on the outer guide surface 26a, but is protected by the cable protection plate 28. Therefore, when the cover 5 is attached to the closure main body 4, the optical cord 9 is prevented from being pinched, so that the optical cord 9 is not damaged.
[0024]
Returning to FIGS. 1 and 2, in the above-described closure 1, when connecting the upper-side optical cable with connector 2 and the lower-side optical cable with connector 3, first connect the optical cables 2 and 3 with connectors to the cable introduction section 6. , 7 into the closure body 4. Then, the branch portions 10 of the optical cables 2 and 3 with connectors are pressed and fixed with screws 15. Next, the optical cord 9 of the optical cable with connector 2 is passed through the space S below the adapter section 16 (see FIG. 6), and the optical connector 11 of the optical cable with connector 2 is connected to the adapter 17b of the adapter section 16. At this time, if the extra length of the optical cord 9 is long, the connector 11 is connected to the adapter 17b with the extra length of the optical cord 9 wired in, for example, a figure eight. Further, the connector 11 of the optical cable with connector 3 is connected to the adapter 17a of the adapter section 16. Also at this time, when the extra length of the optical cord 9 is long, the connector 11 is connected to the adapter part 17a with the extra length of the optical cord 9 wired in, for example, a figure eight. Finally, the cover 5 is attached to the closure body 4.
[0025]
Thus, the optical cables 2 and 3 with connectors can be easily introduced into the closure main body 4 and connected. Further, since the optical cables 2 and 3 with connectors can be stored in the closure main body 4 with good space efficiency, the size of the closure 1 can be reduced.
[0026]
Also, on the back surface of the closure body 4, two telephone pole mounting brackets 30 for mounting the closure 1 to a telephone pole, and a suspension line mounting bracket 32 for mounting the closure 1 to a steel cable support line (suspension line) 31. Are provided.
[0027]
When attaching the closure 1 to a power pole, as shown in FIG. 11, a mounting band 33 made of stainless steel or the like is passed through two power pole mounting brackets 30 and wound around a power pole.
[0028]
The hanging wire mounting bracket 32 has a mounting plate 35 fixed to the back surface of the closure body 4, and a pair of gripping members 36 for gripping the hanging wire 31 are mounted on the mounting plate 35 by bolts 37. ing. On one side surface of each of the gripping members 36, a gripping groove 38 that engages with the thick suspension line 31 having an outer diameter of, for example, about 6 to 16.1 mm is provided. On the other side surface of each gripping member 36, a gripping groove 39 having a smaller size than the gripping groove 38 and engaging with, for example, a thin suspension line 31 having an outer diameter of about 2.6 to 3.2 mm is provided. Have been.
[0029]
When the closure 1 is attached to the thick suspension line 31 by such a suspension line mounting bracket 32, as shown in FIG. 12, each of the holding groove portions 38 of the pair of holding members 36 face each other, and each of the holding groove portions At 38, the hanging wire 31 is sandwiched, and each gripping member 36 is tightened and fixed with a bolt 37. On the other hand, when attaching the closure 1 to the thin suspension line 31, as shown in FIG. 13, the pair of holding members 36 are turned over from the state shown in FIG. 12 so that the holding grooves 39 face each other. Then, the suspension line 31 is sandwiched between the holding grooves 39, and the holding members 36 are tightened and fixed with the bolts 37.
[0030]
As described above, since both the thick suspension line 31 and the thin suspension line 31 can be grasped by the same grasping member 36, it is not necessary to prepare a plurality of grasping members according to the diameter of the suspension line 31. Therefore, the cost of parts can be reduced.
[0031]
The optical cable connection closure according to the present invention is not limited to the above embodiment.
[0032]
For example, instead of the optical cables with connectors 2 and 3 shown in FIG. 3, an optical cable with connector 40 as shown in FIG. 14 can be used. The optical cable with connector 40 has a branch portion 41 having a different structure from the branch portion 10 described above. A plurality of positioning concave portions 42 are provided on the upper surface of the branch portion 41, and a plurality of positioning convex portions (not shown) are provided on the lower surface of the branch portion 41.
[0033]
When such a branch portion 41 is fixed to the closure body 4, for example, as shown in FIG. 15, a base 44 having a plurality of positioning recesses 43 on the upper surface is provided. Then, the branch portion 41 is placed on the base 44 such that the positioning projection (not shown) of the branch portion 41 is fitted into the positioning concave portion 43 of the base 44. When the branch portions 41 are stacked in two stages, the positioning projections (not shown) of the upper branch portion 41 are fitted into the positioning recesses 42 of the lower branch portion 41. In this state, the cable fixing member 45 provided with the pressing portion 45a for pressing the branch portion 41 is attached to the closure body 4.
[0034]
Further, the optical connector of the optical cable with a connector is not limited to the SC type connector described above, but may be an FC type, LC type, MU type, MPO type connector, or the like.
[0035]
【The invention's effect】
According to the present invention, a cable fixing means for fixing each optical cable with a connector introduced into the closure main body to the closure main body, an adapter portion to which a connector of each optical cable with a connector is connected, and an extra portion of each optical cable with a connector. The provision of the extra cable length storage section for storing the length allows the optical cables with connectors to be easily and reliably connected and protected.
[Brief description of the drawings]
FIG. 1 is a plan view showing the internal structure of an embodiment of an optical cable connection closure according to the present invention.
FIG. 2 is an exploded side view of the optical cable connection closure shown in FIG.
FIG. 3 is a perspective view showing an example of an optical cable with a connector applied to the optical cable connection closure shown in FIG. 1;
4 is a cross-sectional view showing a state where a branch portion of the optical cable with connector shown in FIG. 3 is fixed to the closure main body, as viewed from a side of the closure main body.
5 is a cross-sectional view showing a state where a branch portion of the optical cable with connector shown in FIG. 3 is fixed to the closure main body, as viewed from an end face side of the closure main body.
FIG. 6 is a front view of the adapter section shown in FIG. 1;
FIG. 7 is a sectional view taken along line VII-VII when the upper adapter section shown in FIG. 6 is in a normal state.
8 is a sectional view taken along line VIII-VIII when the upper adapter section shown in FIG. 6 is in a normal state.
FIG. 9 is a perspective view showing an R guide and a cable protection plate provided on the extra length holding plate shown in FIG. 1;
FIG. 10 is a perspective view showing a state in which the optical cord is protected by the cable protection plate shown in FIG.
FIG. 11 is a plan view showing a state in which the optical cable connection closure shown in FIGS. 1 and 2 is attached to a telephone pole.
FIG. 12 is a side view showing a state where the optical cable connection closure shown in FIGS. 1 and 2 is attached to a thick suspension line.
FIG. 13 is a side view showing a state where the optical cable connection closure shown in FIGS. 1 and 2 is attached to a thin suspension line.
FIG. 14 is a perspective view showing another example of an optical cable with a connector applied to the optical cable connection closure shown in FIGS. 1 and 2;
15 is a perspective view showing a state where a branch portion of the optical cable with a connector shown in FIG. 14 is fixed to a closure main body.
DESCRIPTION OF SYMBOLS 1 ... Closure for optical cable connection, 2 ... Optical cable with connector, 3 ... Optical cable with connector, 4 ... Closure body, 5 ... Cover, 9 ... Optical cord, 10 ... Branch part, 11 ... Optical connector, 14 ... Cable fixing material (Cable Fixing means), 15: Screw (cable fixing means), 16: Adapter part, 17a, 17b: Adapter, 18: Projecting part, 19: Projecting part, 19a: Holding concave part, 20: Adapter mounting member, 21: Adapter mounting Member, 21a: holding projection, 24: shaft, 25: extra holding plate (cable extra storage portion), 26: R guide (cable guide), 26a: guide surface, 27: hinge, 28: cable protection Plate, 31 ... hanging wire, 32 ... hanging wire mounting bracket (attaching means), 36 ... gripping member, 38 ... gripping groove (first gripping groove), 39 ... gripping groove (second grip) Use grooves), 40 ... connector with an optical cable, 41 ... branch portion, 45 ... cable fixing member (cable fixing means).

Claims (4)

複数本のコネクタ付き光ケーブルが導入されるクロージャ本体と、
前記クロージャ本体内に導入された前記各コネクタ付き光ケーブルを前記クロージャ本体に固定するためのケーブル固定手段と、
前記クロージャ本体内に設けられ、前記各コネクタ付き光ケーブルのコネクタが接続されるアダプタ部と、
前記クロージャ本体内に設けられ、前記各コネクタ付き光ケーブルの余長が収納されるケーブル余長収納部と、
前記クロージャ本体の内部を保護するためのカバーと、
前記クロージャ本体を吊り線に取り付けるための取付手段とを備えることを特徴とする光ケーブル接続用クロージャ。A closure body into which a plurality of optical cables with connectors are introduced;
Cable fixing means for fixing the optical cable with each connector introduced into the closure main body to the closure main body,
An adapter unit provided in the closure main body, to which a connector of the optical cable with each connector is connected;
A cable extra length storage portion that is provided in the closure main body and stores an extra length of the optical cable with each connector;
A cover for protecting the inside of the closure body,
An attachment means for attaching the closure main body to a suspension line. 前記アダプタ部は、上下２段に配置されており、
上段の前記アダプタ部は、前記クロージャ本体に固定された前記アダプタ取付部材に回動可能に支持されていることを特徴とする請求項１記載の光ケーブル接続用クロージャ。The adapter unit is disposed in two stages, upper and lower,
2. The optical cable connection closure according to claim 1, wherein the upper adapter portion is rotatably supported by the adapter mounting member fixed to the closure main body. 前記ケーブル余長収納部は、前記コネクタ付き光ケーブルの余長をガイドするための湾曲状のガイド面を有するケーブルガイドと、前記ケーブルガイドに回動自在に結合され、前記ガイド面にガイドされた前記コネクタ付き光ケーブルの余長を保護するケーブル保護板とを有することを特徴とする請求項１または２記載の光ケーブル接続用クロージャ。The cable extra length storage portion is a cable guide having a curved guide surface for guiding the extra length of the optical cable with a connector, and the cable guide is rotatably coupled to the cable guide and guided by the guide surface. 3. The optical cable connection closure according to claim 1, further comprising a cable protection plate for protecting an extra length of the optical cable with the connector. 前記取付手段は、前記吊り線を把持する１対の把持部材を有し、
前記各把持部材の一方の側面には、前記吊り線と係合する第１把持用溝部が設けられ、前記各把持部材の他方の側面には、前記吊り線と係合し前記第１把持用溝部よりも小さい寸法を有する第２把持用溝部が設けられていることを特徴とする請求項１〜３のいずれか一項記載の光ケーブル接続用クロージャ。The mounting means has a pair of gripping members for gripping the hanging line,
On one side of each of the gripping members, a first gripping groove is provided for engaging with the hanging line, and on the other side of each of the gripping members, the first gripping groove is engaged with the hanging line. The optical cable connection closure according to any one of claims 1 to 3, wherein a second gripping groove having a smaller size than the groove is provided.
JP2002217997A 2002-07-26 2002-07-26 Optical cable connection closure Expired - Lifetime JP3814234B2 (en)

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KR101413748B1 (en) * 2012-06-11 2014-07-01 주식회사 로제 Optical cable connection divergence box and optical cable monitoring system
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