JP4029494B2 - Optical termination - Google Patents

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JP4029494B2
JP4029494B2 JP26544798A JP26544798A JP4029494B2 JP 4029494 B2 JP4029494 B2 JP 4029494B2 JP 26544798 A JP26544798 A JP 26544798A JP 26544798 A JP26544798 A JP 26544798A JP 4029494 B2 JP4029494 B2 JP 4029494B2
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optical
optical fiber
extra length
cord
connector
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JP2000098139A (en
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一郎 松浦
和人 斎藤
敏行 渡邊
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、光ファイバネットワークにおいて、一側（例えば加入者側）の光ケーブルと他側（例えば局側）の光ケーブルとの光コネクタ接続に利用するための光成端架に関するものである。
【０００２】
【従来の技術】
従来、このような分野の技術として、特開平９−５５３３号公報がある。この公報に記載された光成端架の上段側には、多数の光分岐モジュールを並設させた状態で配置させ、この下段側には、各光分岐モジュールから排出させた光ファイバコードと光ケーブルから延びる光ファイバとの光接続に利用するＭＴコネクタを収容するための光コネクタ収容ケースが配置されている。そして、ボックス状の光コネクタ収容ケース内には、多数のＭＴコネクタが段積みされた状態で収容され、しかも、光コネクタ収容ケース内で、多数の光ファイバコード及び光ケーブル側光ファイバがループ状に巻かれるようにして余長収容されている。従って、このようなボックス状光コネクタ収容ケースを利用すると、ＭＴコネクタの接続切替を行う際、所望のＭＴコネクタを簡単に取り出すことができ、しかも、ケース内に光ファイバの余長を形成することもでき、ＭＴコネクタの接続切替作業を効率よく、確実に行うことができる。
【０００３】
【発明が解決しようとする課題】
しかしながら、前述した従来の光成端架には、次のような課題が存在していた。すなわち、光成端架内に配置させた光分岐モジュールは、引出し自在に構成されているが、光コネクタ収容ケースは、光成端架内で据え付け固定させた状態になっている。よって、光コネクタ収容ケースから所望のＭＴコネクタを取り出すことを考慮し、ケースの上方に作業者の手が入る程度の作業空間が必要となり、光分岐モジュールと光コネクタ収容ケースとを離して配置させる必要があり、その結果、架内の空間利用効率が悪化する。このことは、光分岐モジュールと光コネクタ収容ケースとを架内で多段構造にする際、光成端架が大型化するといった問題点があった。
【０００４】
本発明は、上述の課題を解決するためになされたもので、特に、光コネクタの取り出しの容易化を図りつつ、余長収容トレーの設置スペースの効率化をも図った光成端架を提供することを目的とする。
【０００５】
【課題を解決するための手段】
請求項１に係る本発明の光成端架は、第１側の光ケーブルから延び出る多心光ファイバを光コネクタ接続により、第２側の光ケーブルから延び出る単心光ファイバへ分岐接続させるために、第１側の光ケーブルと第２側の光ケーブルとの結線上に光分岐モジュールを配置させ、光分岐モジュールは、枠体内で並設させて光分岐モジュール群として構成させた光成端架において、
光分岐モジュールから導出させた光ファイバコードと第１側の光ケーブルから延び出る多心光ファイバとを光コネクタを介して接続させ、光コネクタを収容すると同時に、光コネクタから延びる光ファイバコードと多心光ファイバとの余長をも収容する余長収容トレーを、枠体内で光分岐モジュール群の前方又は後方に配置させ、
枠体の上下方向に並設させた複数の余長収容トレーにおいて、各余長収容トレーの倒れ角度を、上から下にかけて順次大きくしたことを特徴とする。
【０００６】
この光成端架においては、枠体内で光分岐モジュールを並設させており、各光分岐モジュールからは光ファイバコードが導出され、各光ファイバコードは余長収容トレー内に導かれ、余長収容トレー内には、第１側の光ケーブルから延び出た多心光ファイバも導かれている。更に、各余長収容トレー内には、光ファイバコードと多心光ファイバとをそれぞれ連結させるための光コネクタが収容されている。このような余長収容トレーは、光分岐モジュールの前方又は後方のいずれかに配置され、光分岐モジュールと余長収容トレーとを横に並べる結果、余長収容トレーへのアクセスが容易となり、余長収容トレー内に収容した光コネクタの取り出しの易さに寄与する。しかも、光分岐モジュールと余長収容トレーとを多段に積み上げるような光成端架において、余長収容トレーの設置スペースの効率化を図る上で有効な手段となる。
さらに、枠体の上下方向に並設させた複数の余長収容トレーにおいて、各余長収容トレーの倒れ角度を、上から下にかけて順次大きくする。このような構成を採用した場合、各段の余長収容トレーの傾き角度は、作業者の目線位置に合わせるように設定される結果、光コネクタの光接続切替作業の更なる効率化が図られることになる。
【０００７】
請求項２記載の光成端架に関し、余長収容トレーは、光分岐モジュール群側に倒れるように傾けられて設置されると好ましい。このような構成を採用した場合、余長収容トレー内に存在する光コネクタの確認作業が極めて容易となり、光接続の切替作業の効率化が促進される。
【０００８】
請求項３記載の光成端架に関し、余長収容トレーは、傾き角度調整自在に設置されていると好ましい。このような構成を採用した場合、作業状況に応じて余長収容トレーの傾き角度を調整できる結果、余長収容トレー内に存在する光コネクタの光接続切替作業の効率化が図られ、光成端架の幅広い有効利用を可能にする。
【００１１】
請求項４記載の光成端架に関し、余長収容トレー内には、仕切片により形成した光ファイバコード用の第１の余長経路と、多心光ファイバ用の第２の余長経路とが設けられていると好ましい。このような構成を採用した場合、各余長経路が仕切片により形成される結果、光ファイバコードと多心光ファイバとが適切に分離収容されて、別経路上で引き回され、余長収容トレー内での混線防止に寄与する。従って、余長収容トレーから光コネクタを取り出す際や、余長収容トレー内に光コネクタを戻す際の作業性の向上に寄与する。
【００１２】
請求項５記載の光成端架に関し、余長収容トレー内には、複数の光コネクタを並設させて収容する光コネクタ収容部を有し、第１の余長経路のコード排出口に、光コネクタ収容部の一端側に位置するＲ形状のガイド部を配置させると好ましい。このような構成を採用した場合、光コネクタを光コネクタ収容部に装填させた状態において、第１の余長経路から排出させた光ファイバコードの曲げ半径を、光コネクタ収容部の端部近傍で、Ｒ形状のガイド部によって確保することができる。従って、コード排出口から導出させた光ファイバコードを、コード排出口近くの光ファイバ収容部に導く場合でも、光ファイバの安定した曲げ形状の確保が図られることになる。
【００１３】
請求項６記載の光成端架に関し、余長収容トレーの前部には、枠体内における各光分岐モジュールの位置に対応して一列に整列させた光ファイバ挿入溝が形成され、余長収容トレー内には、光コネクタ収容部が光ファイバ挿入溝の配列方向に対して平行に延在し、第１の余長経路は、光ファイバ挿入溝の一方の整列端側に位置するコード導入口から光コネクタ収容部の後方側を這い回されて、光ファイバ挿入溝の他方の整列端側に位置するコード排出口に向けて延在すると好ましい。このような構成を採用した場合、各光ファイバ挿入溝に各光ファイバコードを挿入させることにより、余長収容トレーの前部で光ファイバコードの途中を一本ずつ整列させることができる。また、コード導入口から最も離れた光ファイバ挿入溝に差し入れられた光ファイバコードから順に、光ファイバコードの光コネクタを、コード排出口に最も近い光コネクタ収容部の端から順次配置させることが可能となる。すなわち、コード排出口に近い光ファイバ挿入溝に差し入れられた光ファイバコードから順に、各光コネクタは、光コネクタ収容部のコード排出口に近い側から順次収容させると、各光分岐モジュールから延び出たそれぞれの光ファイバコードの長さを揃えた場合でも、各光ファイバコードを余長収容トレー内に無理なく収容することができる。そして、光分岐モジュールから導出させる光ファイバコードの長さが揃えられる結果、光成端架内で採用される多数の光分岐モジュールの画一化が達成され、光成端架に各光分岐モジュールを組付ける作業が極めて簡単になる。
【００１４】
請求項７に係る本発明の光成端架は、第１側の光ケーブルから延び出る多心光ファイバを光コネクタ接続により、第２側の光ケーブルから延び出る単心光ファイバへ分岐接続させるために、第１側の光ケーブルと第２側の光ケーブルとの結線上に光分岐モジュールを配置させ、光分岐モジュールは、枠体内で並設させて光分岐モジュール群として構成させた光成端架において、
光分岐モジュールから導出させた光ファイバコードと第１側の光ケーブルから延び出る多心光ファイバとを光コネクタを介して接続させ、光コネクタを収容すると同時に、光コネクタから延びる光ファイバコードと多心光ファイバとの余長をも収容する余長収容トレーを、枠体内で光分岐モジュール群の前方又は後方に配置させ、
余長収容トレー内には、仕切片により形成した光ファイバコード用の第１の余長経路と多心光ファイバ用の第２の余長経路とが設けられ、
余長収容トレー内には、複数の光コネクタを並設させて収容する光コネクタ収容部を有し、第１の余長経路のコード排出口に、光コネクタ収容部の一端側に位置するＲ形状のガイド部を配置させ、
余長収容トレーの前部には、枠体内における各光分岐モジュールの位置に対応して一列に整列させた光ファイバ挿入溝が形成され、余長収容トレー内には、光コネクタ収容部が光ファイバ挿入溝の配列方向に対して平行に延在し、第１の余長経路は、光ファイバ挿入溝の一方の整列端側に位置するコード導入口から光コネクタ収容部の後方側を這い回されて、光ファイバ挿入溝の他方の整列端側に位置するコード排出口に向けて延在することを特徴とする。
請求項８記載の光成端架に関し、余長収容トレーは、引出し手段を介して枠体内で取付けられていると好ましい。このような構成を採用した場合、余長収容トレーが作業者側に引き出される結果、複数の余長収容トレーを、光分岐モジュール群の前方又は後方で段積み状態にした場合でも、各余長収容トレー内に収容した光コネクタへのアクセスが容易になり、光接続切替作業の効率化に寄与する。
請求項９記載の光成端架に関し、第２の余長経路の多心光ファイバ排出口に、光コネクタ収容部の他端側に位置するＲ形状のガイド部を配置させると好ましい。このような構成を採用した場合、光コネクタを光コネクタ収容部に装填させた状態において、第２の余長経路から排出させた多心光ファイバの曲げ半径を、光コネクタ収容部の端部近傍で、Ｒ形状のガイド部によって確保することができる。従って、テープ排出口から導出させた多心光ファイバを、テープ排出口近くの光ファイバ収容部に導く場合でも、光ファイバの安定した曲げ形状の確保が図られることになる。
【００１５】
【発明の実施の形態】
以下、図面と共に本発明による光成端架の好適な実施形態について詳細に説明する。
【００１６】
図１は、本発明に係る光成端架を示す正面図である。同図に示された光成端架１は、光配線モジュール（ＦＴＭ）と呼ばれるものであり、この光成端架１は、加入者側（第１側）の光ケーブル２から導出させた多数の多心光ファイバ（以下「テープファイバ」という）３と、局側（第２側）の光ケーブル４から導出させた多数の単心光ファイバ５とを、それぞれ対応させて接続させるためのものである。
【００１７】
この光成端架１の枠体（キャビネット）６には、図１及び図２に示すように、内部にカプラ７等を収容した光分岐モジュール８が配置され、光分岐モジュール８は、棚９ａ上で横一列に並べられるようにして光分岐モジュール群１０を構成する。また、各光分岐モジュール８は、棚９ａ上に例えば５０本並べられ、ガイドレール（図示せず）を介して枠体６内で引出し自在に収容されている。光分岐モジュール群１０の下方には、棚９ｂ上に光スイッチ（心線選択手段）Ｓが設置され、カプラ７に接続させた分岐心線Ｇを光スイッチＳ内に導いている。なお、この光スイッチＳは、ＯＴＤＲ等の測定機器Ｋに接続される。
【００１８】
図２に示すように、各光分岐モジュール８の後端部８ｂには、光ケーブル４の各単心光ファイバ５の先端に設けられた光コネクタ１１を差し込むためのコネクタ差込み部Ｃが設けれている。各光分岐モジュール８は、コネクタ差込み部Ｃから延びる単心の光ファイバコード１２を４本有し、各光ファイバコード１２は、光分岐モジュール８内を通って前端部８ａから外部に導出する。そして、光分岐モジュール８から導出させた各光ファイバコード１２は、一括した状態で第１の光コネクタ（ＭＴコネクタ）１３に取付けられている。よって、一本の光分岐モジュール８は、一個の光コネクタ１３を有することになり、前述した光分岐モジュール群１０においては、光分岐モジュール８の個数（例えば５０本）に対応する第１の光コネクタ１３が存在することになる。
【００１９】
また、各第１の光コネクタ１３は、加入者側の光ケーブル２のテープファイバ３の先端に設けられた各第２の光コネクタ（ＭＴコネクタ）１４に対して、図示しないガイドピンを介して接続される。なお、第１の光コネクタ１３と第２の光コネクタ１４との光接続を、光分岐モジュール８の外部で行うように構成した理由は、光コネクタ１３，１４同士の接続切替作業の簡易化と、接続切替作業時において、光分岐モジュール８内のカプラ７等に触れないようにして、光分岐モジュール８内の部品の損傷を回避させるためである。
【００２０】
このように、第１の光コネクタ１３と第２の光コネクタ１４とからなる光接続ユニット１５が、光分岐モジュール８の外部にあるため、光成端架１の枠体６内には、多数の光コネクタ１３，１４を一括収容するための余長収容トレー１６を設置させている。この余長収容トレー１６は、図１及び図３に示すように、棚９ａ上で光分岐モジュール群１０の前方に設置されている。そして、余長収容トレー１６内で、多数（例えば５０組）の光接続ユニット１５は横一列に並べられる。また、余長収容トレー１６は、光コネクタ１３，１４を収容することは勿論のこと、光コネクタ１３から延びる光ファイバコード１２と光コネクタ１４から延びるテープファイバ３との余長を収容するものである。
【００２１】
図３及び図４に示すように、余長収容トレー１６の前端部には、枠体６内における各光分岐モジュール８の配列方向に対応して、一列に整列させた光ファイバ引掛け片１８が設けられている。そして、隣接する光ファイバ引掛け片１８の間に形成した光ファイバ挿入溝１９は、各光分岐モジュール８に一対一で対応するように整列させている。また、余長収容トレー１６の底板１６Ａ上には、光ファイバコード１２の余長を確保するための第１の余長経路Ｐと、テープファイバ３の余長を確保するための第２の余長経路Ｑとが設けられている。更に、余長収容トレー１６の底板１６Ａ上には、各光ファイバコード１２の光コネクタ１３及び各テープファイバ３の光コネクタ１４を整列配置させるためのボックス状の光コネクタ収容部２０が設けられ、この光コネクタ収容部２０は、光ファイバ挿入溝１９の配列方向に対し平行に延在する。そして、余長収容トレー１６の上面は開放されているが、蓋があってもよい。
【００２２】
また、余長収容トレー１６の底板１６Ａ上において、第１の余長経路Ｐは、光ファイバ挿入溝１９の整列方向における一端側に位置するコード導入口２２から、光コネクタ収容部２０の後方側を通り、光ファイバ挿入溝１９の整列方向における他端側に位置するコード排出口２３まで延在する。そして、コード排出口２３は、光コネクタ収容部２０の前方に形成させたコード収容空間Ａに臨ませている。この場合の余長経路Ｐは、余長収容トレー１６の底板１６Ａの輪郭に沿って延在する外側の仕切片２４と、外側の仕切片２４から所定間隔だけ離させて延在する内側の仕切片２５との間に形成され、コード導入口２２からコード排出口２３にかけて、底板１６Ａ上で略Ｕ字形状をなしている。そして、余長収容トレー１６の底板１６Ａ上において、コード排出口２３には、光コネクタ収容部２０の一端側に位置するＲ形状のガイド部２６が設けられている。このガイド部２６の半径を３０ｍｍ以上にすることで、光ファイバコード１２の最小曲げ半径が確保されることになる。
【００２３】
このような構成を採用した場合、コード導入口２２から最も離れた光ファイバ挿入溝１９に挿入させた光ファイバコード１２Ａは、光ファイバ挿入溝１９の後方でその配列方向に平行に延在する仕切片２７に沿ってコード導入口２２まで導かれる。そして、光ファイバコード１２Ａは、第１の余長経路Ｐに沿ってコード排出口２３まで引き回された後、ガイド部２６に沿わせるようにして、コード排出口２３に最も近い光コネクタ収容部２０の端に導かれる。そして、光ファイバコード１２Ａの光コネクタ１３Ａを、コード排出口２３側の光コネクタ収容部２０の端に実装させる。
【００２４】
これに対して、コード導入口２２に最も近い光ファイバ挿入溝１９に挿入させた光ファイバコード１２Ｂはコード導入口２２まで最短で導かれる。そして、光ファイバコード１２Ｂは、第１の余長経路Ｐに沿ってコード排出口２３まで引き回された後、ガイド部２６に沿わせるようにして、コード排出口２３から最も遠い光コネクタ収容部２０の端に導かれる。そして、光ファイバコード１２Ｂの光コネクタ１３Ｂは、コード導入口２２側の光コネクタ収容部２０の端に実装される。
【００２５】
すなわち、各光分岐モジュール８から導出させる光ファイバコード１２の長さを揃えた場合、光ファイバ挿入溝１９に差し込まれた各光ファイバコード１２の光コネクタ１３は、コード導入口２２から遠い順に、光コネクタ収容部２０のコード排出口２３側の端から順次並べられる。よって、画一的な長さをもつ各光ファイバコード１２を無理なく余長収容トレー１６内に収容することができる。そして、光分岐モジュール８から導出させる光ファイバコード１２の長さが揃えられる結果、光成端架１内で採用される多数の光分岐モジュール８の全てを画一化することができ、光成端架１に光分岐モジュール８を組付ける際の作業効率がアップする。
【００２６】
また、テープファイバ３の余長を確保するための第２の余長経路Ｑは、光ファイバ挿入溝１９の整列方向における一端側でコード導入口２２に対向して設けられたテープ導入口２８と、コード排出口２３に対向して、光ファイバ挿入溝１９の整列方向における他端側に位置するテープ排出口（多心光ファイバ排出口）２９と間で、略Ｌ字形状をなして延在する。このテープ排出口２９は、光コネクタ収容部２０の後方に形成させたテープ収容空間Ｂに臨ませ、第２の余長経路Ｑのテープ排出口２９には、光コネクタ収容部２０の他端側に位置するＲ形状のガイド部３０が設けられている。
【００２７】
このガイド部３０の半径を３０ｍｍ以上にすることで、テープファイバ３の最小曲げ半径が確保されることになる。そして、余長経路Ｑは、前述した仕切片２７と、この仕切片２７に対して平行に延在しながらＬ字形に曲げられた仕切片３１とによって作り出されている。そして、各テープファイバ３に設けられた光コネクタ１４を、光コネクタ収容部２０内に収容させた場合、各テープファイバ３は、第２の余長経路Ｑ内を引き回されて、外部に排出される。
【００２８】
ここで、図５に示すように、余長収容トレー１６の両側面１６ａの上部には、左右一対の回動ピン３３が設けられ、各回動ピン３３は、枠体６に設けられた軸受け部３４によって回動自在に支持されている。そして、余長収容トレー１６は、光分岐モジュール群１０側に倒れるように傾けられ、この傾きを維持するために、余長収容トレー１６は、棚９ａから突出させたスタンド３５上に固定されている。この場合、余長収容トレー１６は、その開放側上面１６ｂが作業者側を向くように立て掛けられる。
【００２９】
また、図６に示すように、各光分岐モジュール８は引出し自在な構成を有し、余長収容トレー１６が光分岐モジュール８の前方に位置する関係から、各光分岐モジュール８は後方に引き出すようにする。そこで、棚９ａから上方に向けて複数の平行なガイドレール３６を突出させ、各光分岐モジュール８に下端にスライダー３７を設ける。そして各スライダー３７が、各ガイドレール３６間のガイド溝３６ａに嵌め合わすように差し込まれる。よって、ガイドレール３６とスライダ３７との協働により引出し手段３８を構成し、この引出し手段３８によって、各光分岐モジュール８を独立して進退させることが可能になる。
【００３０】
なお、図７に示すように、各光分岐モジュール８の前方引き出しを可能にするため、余長収容トレー１６の回動ピン３３を光分岐モジュール８の上端よりも上方に位置させ、光分岐モジュール８の引出し時に、余長収容トレー１６を作業者側に引き上げるようにして回転させることも可能である。
【００３１】
また、他の実施形態として、図８に示すように、余長収容トレー１６の両側面１６ａの下部には、左右一対の回動ピン３９が設けられ、各回動ピン３９は、枠体６の棚９ａに設けられた軸受け部４０によって回動自在に支持させる。また、余長収容トレー１６は、光分岐モジュール群１０側に倒れるように傾けられ、この傾き角度を調整自在にするために、余長収容トレー１６は、抜き差し自在な抜きピン４２で支持される。そして、枠体６の側壁６ａには、複数の差し込み穴４１が形成され、各差し込み穴４１は、余長収容トレー１６の回動予定範囲の任意の位置に形成されている。例えば、差し込み穴４１を、仰角３０度、４５度、６０度の位置に設けた場合、余長収容トレー１６の３段階の角度調整を可能にする。
【００３２】
更に他の実施形態として、図９に示すように、光成端架１において、余長収容トレー１６を、枠体６の上下方向に複数個（この例では５段）配置させた場合、各段の余長収容トレー１６の倒れ角度αを上段から下段にかけて順次大きくする。これは、光成端架１内で余長収容トレー１６を２段以上にする場合に有益であり、作業者の目線位置に合わせるように、余長収容トレー１６の角度設定を行った結果である。従って、光ファイバの高集積化によって、光成端架１を多段構造にした場合に、余長収容トレー１６内の光コネクタ１３，１４の光接続切替作業の更なる効率化が図られることになる。
【００３３】
更に他の実施形態として、図１０に示すように、一つの光分岐モジュール群１０の前方で、複数個の余長収容トレー１６を積み重ねるように設置させる場合、各余長収容トレー１６に引出し手段４４を適用させると好適である。各引出し手段４４は、余長収容トレー１６の両側面１６ａから突出して水平方向に延在する左右一対のスライダー４５と、このスライダー４５を上下から挟むように枠体６から突出させて水平方向に延在する左右一対のガイドレール４６とからなる。従って、余長収容トレー１６は、スライダー４５とガイドレール４６との協働により水平方向に引き出されることになる。このように、余長収容トレー１６が作業者側に引き出される結果、余長収容トレー１６の開放側上面１６ｂから光コネクタ１３，１４へのアクセスが容易になる。なお、スライダー４５をローラ部材としてもよい。
【００３４】
本発明の光成端架は、前述した実施形態に限定されるものではなく、例えば、余長収容トレー１６を光分岐モジュール群１０の後方に設置させても、初期の目的を達成できることは言うまでもない。
【００３５】
【発明の効果】
本発明による光成端架は、光コネクタの取り出しの容易化を可能にしつつ、余長収容トレーの設置スペースの効率化を可能にする。
【図面の簡単な説明】
【図１】本発明に係る光成端架の一実施形態を示す正面図である。
【図２】図１に示した光成端架内での結線状態を示す概略図である。
【図３】余長収容トレーと光分岐モジュール群と光スイッチとの三者を一ユニットとして、枠体内で縦積み配置させた状態を示す斜視図である。
【図４】余長収容トレーを示す平面図である。
【図５】余長収容トレーを斜めに立て掛けた状態を示す側面図である。
【図６】図５の光分岐モジュールの引出し手段を示す要部拡大図である。
【図７】余長収容トレーの第２の実施形態を示す側面図である。
【図８】余長収容トレーの第３の実施形態を示す側面図である。
【図９】余長収容トレーの第４の実施形態を示す側面図である。
【図１０】余長収容トレーの第５の実施形態を示す側面図である。
【符号の説明】
Ｐ…第１の余長経路、Ｑ…第２の余長経路、１…光成端架、２…第１側の光ケーブル、３…テープファイバ（多心光ファイバ）、４…第２側の光ケーブル、５…単心光ファイバ、６…枠体、８…光分岐モジュール、１０…光分岐モジュール群、１２…光ファイバコード、１３，１４…光コネクタ、１６…余長収容トレー、１９…光ファイバ挿入溝、２０…光コネクタ収容部、２２…コード導入口、２３…コード排出口、２４，２５，２７，３１…仕切片、２６，３０…ガイド部、２９…テープ排出口（多心光ファイバ排出口）、４４…引出し手段。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical termination for use in optical connector connection between an optical cable on one side (for example, a subscriber side) and an optical cable on the other side (for example, a station side) in an optical fiber network.
[0002]
[Prior art]
Conventionally, there is JP-A-9-5533 as a technology in such a field. An optical fiber cable and an optical cable discharged from each optical branch module are arranged on the upper side of the optical termination described in this publication in a state where a large number of optical branch modules are arranged in parallel. An optical connector housing case for housing an MT connector used for optical connection with an optical fiber extending from the optical fiber is disposed. In the box-shaped optical connector housing case, a large number of MT connectors are housed in a stacked state, and in the optical connector housing case, a large number of optical fiber cords and optical fiber on the optical cable side are looped. The extra length is accommodated as if it were wound. Therefore, when such a box-shaped optical connector housing case is used, when switching the connection of the MT connector, the desired MT connector can be easily taken out, and an extra length of the optical fiber is formed in the case. The MT connector connection switching operation can be performed efficiently and reliably.
[0003]
[Problems to be solved by the invention]
However, the conventional optical termination described above has the following problems. That is, the optical branching module disposed in the optical termination frame is configured to be freely drawn out, but the optical connector housing case is installed and fixed in the optical termination frame. Therefore, in consideration of taking out a desired MT connector from the optical connector housing case, a work space is required so that an operator's hand can be placed above the case, and the optical branching module and the optical connector housing case are arranged separately. As a result, the space utilization efficiency in the rack deteriorates. This has the problem that when the optical branching module and the optical connector housing case are formed in a multistage structure in the rack, the optical termination rack is enlarged.
[0004]
The present invention has been made in order to solve the above-described problems, and in particular, provides an optical termination that facilitates removal of the optical connector and increases the installation space of the extra length accommodation tray. The purpose is to do.
[0005]
[Means for Solving the Problems]
The optical termination of the present invention according to claim 1 is for branching and connecting a multi-core optical fiber extending from an optical cable on the first side to a single-core optical fiber extending from the optical cable on the second side by optical connector connection. The optical branching module is arranged on the connection between the optical cable on the first side and the optical cable on the second side, and the optical branching module is arranged side by side in the frame and configured as a group of optical branching modules.
An optical fiber cord led out from the optical branching module and a multi-core optical fiber extending from the first-side optical cable are connected via an optical connector to accommodate the optical connector and at the same time, an optical fiber cord extending from the optical connector and the multi-core An extra-length accommodating tray that accommodates an extra length with the optical fiber is disposed in front of or behind the optical branching module group in the frame ,
In the plurality of extra length accommodation trays arranged in parallel in the vertical direction of the frame body, the tilt angle of each extra length accommodation tray is sequentially increased from top to bottom .
[0006]
In this optical termination frame, optical branching modules are juxtaposed in the frame, optical fiber cords are led out from each optical branching module, and each optical fiber cord is led into a surplus length accommodation tray, A multi-core optical fiber extending from the first-side optical cable is also led into the storage tray. Furthermore, optical connectors for connecting the optical fiber cord and the multi-core optical fiber are accommodated in each extra-length accommodating tray. Such an extra length storage tray is arranged either in front of or behind the optical branch module, and as a result of arranging the optical branch module and the extra length accommodation tray side by side, access to the extra length accommodation tray is facilitated, This contributes to easy removal of the optical connector accommodated in the long accommodation tray. Moreover, in the optical termination where the optical branching modules and the extra length accommodation trays are stacked in multiple stages, it is an effective means for increasing the efficiency of the installation space for the extra length accommodation tray.
Further, in the plurality of extra length accommodation trays arranged side by side in the vertical direction of the frame, the inclination angle of each extra length accommodation tray is sequentially increased from top to bottom. In the case of adopting such a configuration, the inclination angle of the extra length storage tray at each stage is set so as to match the position of the operator's line of sight, so that the efficiency of the optical connector switching operation of the optical connector can be further improved. It will be.
[0007]
Related to Mitsunari tanker according to claim 2, extra length accommodating tray When installed tilted to fall to the optical branch module group side preferred. When such a configuration is adopted, the confirmation work of the optical connector existing in the extra length accommodation tray becomes extremely easy, and the efficiency of the optical connection switching work is promoted.
[0008]
Related to Mitsunari tanker according to claim 3, the excess length accommodating tray preferably is installed tilt angle adjustment freely. When such a configuration is adopted, the inclination angle of the extra-length storage tray can be adjusted according to the work situation, so that the optical connection switching work of the optical connector existing in the extra-length storage tray is made more efficient. Enables a wide range of effective use of end frames.
[0011]
Related to Mitsunari tanker according to claim 4, in the surplus length receiving the tray, and the first extra length path for the optical fiber cord formed by the partition member, a second extra length path for multi-core optical fiber Are preferably provided. When such a configuration is adopted, each extra length path is formed by a partition piece. As a result, the optical fiber cord and the multi-core optical fiber are appropriately separated and accommodated, and are routed on another path to accommodate the extra length. Contributes to preventing crosstalk in the tray. Therefore, when taking out the optical connector from the extra length accommodation tray or returning the optical connector into the extra length accommodation tray, it contributes to improvement in workability.
[0012]
Related to Mitsunari tanker according to claim 5, in the extra length accommodating tray has an optical connector accommodating portion for accommodating by juxtaposed a plurality of optical connectors, the cord outlet of the first extra length path It is preferable that an R-shaped guide portion positioned on one end side of the optical connector housing portion is disposed. When such a configuration is adopted, the bending radius of the optical fiber cord discharged from the first extra length path in the state in which the optical connector is loaded in the optical connector housing portion is set near the end of the optical connector housing portion. It can be secured by the R-shaped guide portion. Therefore, even when the optical fiber cord led out from the cord outlet is led to the optical fiber housing near the cord outlet, it is possible to secure a stable bent shape of the optical fiber.
[0013]
Related to claims, wherein 6 Mitsunari tanker, the front portion of the extra-length housing trays, optical fiber insertion groove aligned in a row so as to correspond to the positions of the optical branching module in the frame body is formed, the excess length In the receiving tray, the optical connector receiving portion extends in parallel with the arrangement direction of the optical fiber insertion grooves, and the first extra length path is provided on the side of one aligned end of the optical fiber insertion grooves. It is preferable that the rear side of the optical connector housing portion is wound around from the port and extends toward the cord discharge port located on the other aligned end side of the optical fiber insertion groove. When such a configuration is adopted, by inserting each optical fiber cord into each optical fiber insertion groove, it is possible to align the middles of the optical fiber cords one by one at the front portion of the extra length accommodation tray. Also, in order from the optical fiber cord inserted into the optical fiber insertion groove farthest from the cord introduction port, the optical connector of the optical fiber cord can be sequentially arranged from the end of the optical connector housing portion closest to the cord discharge port. It becomes. That is, in order from the optical fiber cord inserted into the optical fiber insertion groove close to the cord outlet, each optical connector is extended from each optical branch module when sequentially received from the side near the cord outlet of the optical connector housing. Even when the lengths of the respective optical fiber cords are equalized, the respective optical fiber cords can be accommodated without difficulty in the extra-length accommodating tray. As a result, the lengths of the optical fiber cords led out from the optical branching modules are made uniform, so that the uniformization of a large number of optical branching modules employed in the optical termination rack is achieved. The work of assembling is extremely easy.
[0014]
According to a seventh aspect of the present invention, there is provided an optical termination for branching and connecting a multi-core optical fiber extending from an optical cable on a first side to a single-core optical fiber extending from an optical cable on a second side by an optical connector connection. The optical branching module is arranged on the connection between the optical cable on the first side and the optical cable on the second side, and the optical branching module is arranged side by side in the frame and configured as a group of optical branching modules.
An optical fiber cord led out from the optical branching module and a multi-core optical fiber extending from the first-side optical cable are connected via an optical connector to accommodate the optical connector and at the same time, an optical fiber cord extending from the optical connector and the multi-core An extra-length accommodating tray that accommodates an extra length with the optical fiber is disposed in front of or behind the optical branching module group in the frame,
In the extra length accommodation tray, a first extra length path for an optical fiber cord formed by a partition piece and a second extra length path for a multi-core optical fiber are provided,
The surplus length accommodating tray has an optical connector accommodating portion for accommodating a plurality of optical connectors side by side, and is located at one end side of the optical connector accommodating portion at the cord discharge port of the first extra length path. Place the shape guide part,
An optical fiber insertion groove aligned in a line corresponding to the position of each optical branching module in the frame is formed in the front part of the extra length accommodation tray. The first extra length path extends around the rear side of the optical connector housing portion from the cord inlet located on one aligned end side of the optical fiber insertion groove. And extending toward the cord discharge port located on the other aligned end side of the optical fiber insertion groove .
With respect to the optical termination according to claim 8, it is preferable that the extra length accommodation tray is attached within the frame body through the drawing means. When such a configuration is employed, as a result of the extra length accommodating trays being pulled out to the operator side, each extra length is accommodated even when a plurality of extra length accommodating trays are stacked in front or behind the optical branching module group. Access to the optical connector accommodated in the accommodation tray becomes easy, which contributes to the efficiency of the optical connection switching work.
Related to Mitsunari tanker according to claim 9, in the multi-fiber optical fiber outlet of the second extra length path and to place the guide portion of the R-shape which is located on the other end side of the optical connector housing section preferred. When such a configuration is adopted, the bending radius of the multi-core optical fiber discharged from the second extra length path in the state in which the optical connector is loaded in the optical connector housing portion is set near the end of the optical connector housing portion. Thus, it can be secured by the R-shaped guide portion. Therefore, even when the multi-core optical fiber led out from the tape discharge port is guided to the optical fiber housing near the tape discharge port, a stable bent shape of the optical fiber can be ensured.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the optical termination according to the present invention will be described in detail with reference to the drawings.
[0016]
FIG. 1 is a front view showing an optical termination according to the present invention. The optical termination 1 shown in the figure is called an optical wiring module (FTM), and this optical termination 1 is made up of a number of optical cables 2 led out from the optical cable 2 on the subscriber side (first side). A multi-core optical fiber (hereinafter referred to as “tape fiber”) 3 and a large number of single-core optical fibers 5 led out from the optical cable 4 on the station side (second side) are connected in correspondence with each other. .
[0017]
As shown in FIGS. 1 and 2, an optical branching module 8 containing a coupler 7 and the like is disposed inside the frame (cabinet) 6 of the optical termination 1, and the optical branching module 8 includes a shelf 9a. The optical branching module group 10 is configured so as to be arranged in a horizontal row. Each of the optical branching modules 8 is arranged, for example, 50 on the shelf 9a, and is housed in the frame 6 via a guide rail (not shown) so as to be drawn out. Below the optical branching module group 10, an optical switch (core selection unit) S is installed on the shelf 9b, and the branch core G connected to the coupler 7 is guided into the optical switch S. The optical switch S is connected to a measuring device K such as OTDR.
[0018]
As shown in FIG. 2, the rear end portion 8b of each optical branch module 8 is provided with a connector insertion portion C for inserting an optical connector 11 provided at the front end of each single-core optical fiber 5 of the optical cable 4. Yes. Each optical branching module 8 has four single-core optical fiber cords 12 extending from the connector insertion portion C, and each optical fiber cord 12 passes through the optical branching module 8 and is led out from the front end 8a. The optical fiber cords 12 led out from the optical branching module 8 are attached to a first optical connector (MT connector) 13 in a collective state. Therefore, one optical branching module 8 has one optical connector 13. In the optical branching module group 10 described above, the first light corresponding to the number of optical branching modules 8 (for example, 50). The connector 13 exists.
[0019]
Each first optical connector 13 is connected to each second optical connector (MT connector) 14 provided at the end of the tape fiber 3 of the optical cable 2 on the subscriber side via a guide pin (not shown). Is done. The reason why the optical connection between the first optical connector 13 and the second optical connector 14 is performed outside the optical branching module 8 is that the connection switching operation between the optical connectors 13 and 14 is simplified. This is for avoiding damage to parts in the optical branch module 8 by not touching the coupler 7 in the optical branch module 8 during the connection switching operation.
[0020]
As described above, since the optical connection unit 15 including the first optical connector 13 and the second optical connector 14 is outside the optical branching module 8, a large number of optical connection units 15 are provided in the frame 6 of the optical termination frame 1. The extra length accommodation tray 16 for collectively accommodating the optical connectors 13 and 14 is installed. As shown in FIGS. 1 and 3, the extra length accommodation tray 16 is installed in front of the optical branching module group 10 on the shelf 9 a. A large number (for example, 50 sets) of optical connection units 15 are arranged in a horizontal row in the extra length accommodation tray 16. The extra length accommodation tray 16 accommodates the extra length of the optical fiber cord 12 extending from the optical connector 13 and the tape fiber 3 extending from the optical connector 14 as well as the optical connectors 13 and 14. is there.
[0021]
As shown in FIGS. 3 and 4, the front end of the extra-length accommodating tray 16 has optical fiber hooks 18 aligned in a line corresponding to the arrangement direction of the optical branching modules 8 in the frame 6. Is provided. The optical fiber insertion grooves 19 formed between the adjacent optical fiber hooks 18 are aligned so as to correspond to the respective optical branching modules 8 on a one-to-one basis. Further, on the bottom plate 16A of the surplus length accommodation tray 16, a first surplus length path P for securing the surplus length of the optical fiber cord 12 and a second surplus length for securing the surplus length of the tape fiber 3 are provided. A long path Q is provided. Further, on the bottom plate 16A of the extra-length accommodating tray 16, a box-shaped optical connector accommodating portion 20 for arranging and arranging the optical connector 13 of each optical fiber cord 12 and the optical connector 14 of each tape fiber 3 is provided. The optical connector housing portion 20 extends in parallel to the arrangement direction of the optical fiber insertion grooves 19. And although the upper surface of the surplus length accommodation tray 16 is open | released, a lid | cover may be sufficient.
[0022]
On the bottom plate 16 </ b> A of the surplus length accommodation tray 16, the first surplus length path P extends from the cord inlet 22 located at one end side in the alignment direction of the optical fiber insertion groove 19 to the rear side of the optical connector accommodation portion 20. And extends to the cord outlet 23 located on the other end side in the alignment direction of the optical fiber insertion groove 19. The cord discharge port 23 faces the cord housing space A formed in front of the optical connector housing portion 20. In this case, the surplus length path P includes an outer partition piece 24 extending along the contour of the bottom plate 16A of the surplus length storage tray 16, and an inner partition extending at a predetermined interval from the outer partition piece 24. It is formed between the piece 25 and has a substantially U shape on the bottom plate 16 </ b> A from the cord introduction port 22 to the cord discharge port 23. On the bottom plate 16 </ b> A of the extra-length accommodating tray 16, the cord discharge port 23 is provided with an R-shaped guide portion 26 positioned on one end side of the optical connector accommodating portion 20. By setting the radius of the guide portion 26 to 30 mm or more, the minimum bending radius of the optical fiber cord 12 is ensured.
[0023]
When such a configuration is adopted, the optical fiber cord 12A inserted into the optical fiber insertion groove 19 farthest from the cord introduction port 22 is a partition extending in parallel to the arrangement direction behind the optical fiber insertion groove 19. It is led along the piece 27 to the cord introduction port 22. The optical fiber cord 12A is routed along the first extra length path P to the cord outlet 23, and then along the guide portion 26 so as to be close to the cord outlet 23. 20 ends. Then, the optical connector 13A of the optical fiber cord 12A is mounted on the end of the optical connector housing portion 20 on the cord discharge port 23 side.
[0024]
In contrast, the optical fiber cord 12B inserted into the optical fiber insertion groove 19 closest to the cord introduction port 22 is guided to the cord introduction port 22 in the shortest time. The optical fiber cord 12B is routed along the first extra length path P to the cord outlet 23, and then along the guide portion 26 so that the optical connector housing portion farthest from the cord outlet 23 is provided. 20 ends. The optical connector 13B of the optical fiber cord 12B is mounted on the end of the optical connector housing portion 20 on the cord introduction port 22 side.
[0025]
That is, when the lengths of the optical fiber cords 12 led out from the respective optical branching modules 8 are aligned, the optical connectors 13 of the respective optical fiber cords 12 inserted into the optical fiber insertion grooves 19 are arranged in the order of distance from the cord introduction port 22. They are sequentially arranged from the end of the optical connector housing part 20 on the cord outlet 23 side. Therefore, each optical fiber cord 12 having a uniform length can be accommodated in the extra-length accommodating tray 16 without difficulty. As a result of aligning the lengths of the optical fiber cords 12 led out from the optical branching module 8, all of the many optical branching modules 8 employed in the optical termination 1 can be made uniform. The work efficiency when assembling the optical branching module 8 to the end rack 1 is improved.
[0026]
The second extra length path Q for securing the extra length of the tape fiber 3 includes a tape introduction port 28 provided opposite to the cord introduction port 22 on one end side in the alignment direction of the optical fiber insertion groove 19. Opposite to the cord outlet 23, it extends in a substantially L shape between the tape outlet (multi-fiber optical fiber outlet) 29 located on the other end side in the alignment direction of the optical fiber insertion groove 19. To do. The tape discharge port 29 faces a tape storage space B formed behind the optical connector housing portion 20, and the tape discharge port 29 of the second extra length path Q is on the other end side of the optical connector housing portion 20. An R-shaped guide portion 30 is provided.
[0027]
By setting the radius of the guide part 30 to 30 mm or more, the minimum bending radius of the tape fiber 3 is ensured. The extra length path Q is created by the partition piece 27 described above and the partition piece 31 that is bent in an L shape while extending in parallel with the partition piece 27. And when the optical connector 14 provided in each tape fiber 3 is accommodated in the optical connector accommodating part 20, each tape fiber 3 is routed in the 2nd extra length path | route Q, and is discharged | emitted outside. Is done.
[0028]
Here, as shown in FIG. 5, a pair of left and right rotating pins 33 are provided on the upper portions of both side surfaces 16 a of the extra length accommodation tray 16, and each rotating pin 33 is a bearing portion provided on the frame body 6. 34 is rotatably supported. The surplus length accommodation tray 16 is tilted so as to fall to the optical branching module group 10 side, and in order to maintain this tilt, the surplus length accommodation tray 16 is fixed on a stand 35 protruding from the shelf 9a. Yes. In this case, the surplus length accommodation tray 16 is stood up so that the open side upper surface 16b faces the worker side.
[0029]
Further, as shown in FIG. 6, each optical branching module 8 has a configuration that can be pulled out, and each optical branching module 8 is pulled out rearward because the extra length accommodation tray 16 is positioned in front of the optical branching module 8. Like that. Therefore, a plurality of parallel guide rails 36 are projected upward from the shelf 9a, and a slider 37 is provided at the lower end of each optical branching module 8. Each slider 37 is inserted so as to fit in the guide groove 36 a between the guide rails 36. Therefore, the drawing means 38 is configured by the cooperation of the guide rail 36 and the slider 37, and the drawing means 38 makes it possible to independently advance and retract each optical branching module 8.
[0030]
In addition, as shown in FIG. 7, in order to enable each optical branch module 8 to be pulled forward, the rotation pin 33 of the extra-length accommodating tray 16 is positioned above the upper end of the optical branch module 8 so that the optical branch module 8 At the time of pulling out 8, it is also possible to rotate the extra length accommodation tray 16 so as to be pulled up to the operator side.
[0031]
As another embodiment, as shown in FIG. 8, a pair of left and right rotating pins 39 are provided at the lower part of both side surfaces 16 a of the extra length accommodation tray 16. It is rotatably supported by a bearing portion 40 provided on the shelf 9a. Further, the surplus length accommodation tray 16 is tilted so as to fall down to the optical branching module group 10 side, and the surplus length accommodation tray 16 is supported by a removable extraction pin 42 so that the inclination angle can be adjusted. . A plurality of insertion holes 41 are formed in the side wall 6 a of the frame body 6, and each insertion hole 41 is formed at an arbitrary position in the planned rotation range of the extra length accommodation tray 16. For example, when the insertion hole 41 is provided at an elevation angle of 30 degrees, 45 degrees, and 60 degrees, three-stage angle adjustment of the extra length accommodation tray 16 is possible.
[0032]
As another embodiment, as shown in FIG. 9, in the optical termination 1, when a plurality of extra length accommodation trays 16 are arranged in the vertical direction of the frame body 6 (in this example, five stages), The inclination angle α of the extra length accommodation tray 16 is gradually increased from the upper stage to the lower stage. This is useful when the extra length accommodation tray 16 has two or more stages in the optical termination 1 and is a result of setting the angle of the extra length accommodation tray 16 so as to match the position of the operator's line of sight. is there. Therefore, when the optical termination rack 1 has a multistage structure due to the high integration of the optical fibers, the efficiency of the optical connection switching operation of the optical connectors 13 and 14 in the extra length accommodation tray 16 can be further improved. Become.
[0033]
As another embodiment, as shown in FIG. 10, when a plurality of extra length accommodation trays 16 are stacked in front of one optical branching module group 10, the extra length accommodation trays 16 are pulled out. 44 is preferably applied. Each drawer means 44 protrudes from the both sides 16a of the extra-length accommodating tray 16 and extends in the horizontal direction, and a pair of left and right sliders 45, and protrudes from the frame 6 so as to sandwich the slider 45 from above and below in the horizontal direction. It consists of a pair of left and right guide rails 46 that extend. Accordingly, the extra length accommodation tray 16 is pulled out in the horizontal direction by the cooperation of the slider 45 and the guide rail 46. As described above, as a result of the extra length accommodation tray 16 being pulled out to the operator side, access to the optical connectors 13 and 14 from the open side upper surface 16b of the extra length accommodation tray 16 is facilitated. The slider 45 may be a roller member.
[0034]
The optical termination of the present invention is not limited to the above-described embodiment. For example, it is needless to say that the initial purpose can be achieved even if the extra-length accommodating tray 16 is installed behind the optical branching module group 10. Yes.
[0035]
【The invention's effect】
The optical termination according to the present invention makes it possible to make the installation space for the extra-length storage tray more efficient while facilitating the removal of the optical connector.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of an optical termination according to the present invention.
2 is a schematic view showing a connection state in the optical termination shown in FIG. 1. FIG.
FIG. 3 is a perspective view showing a state in which three members, that is, a surplus length accommodation tray, an optical branching module group, and an optical switch, are vertically stacked in a frame as one unit.
FIG. 4 is a plan view showing a surplus length accommodation tray.
FIG. 5 is a side view showing a state in which the extra length accommodation tray is leaned diagonally.
6 is an enlarged view of a main part showing a drawing means of the optical branching module of FIG. 5;
FIG. 7 is a side view showing a second embodiment of a surplus length accommodation tray.
FIG. 8 is a side view showing a third embodiment of a surplus length accommodation tray.
FIG. 9 is a side view showing a fourth embodiment of a surplus length accommodation tray.
FIG. 10 is a side view showing a fifth embodiment of a surplus length accommodation tray.
[Explanation of symbols]
P ... 1st extra length path, Q ... 2nd extra length path, 1 ... Optical termination, 2 ... Optical cable on the 1st side, 3 ... Tape fiber (multi-core optical fiber), 4 ... 2nd side Optical cable, 5 ... Single fiber, 6 ... Frame, 8 ... Optical branch module, 10 ... Optical branch module group, 12 ... Optical fiber cord, 13, 14 ... Optical connector, 16 ... Extra length accommodating tray, 19 ... Optical Fiber insertion groove, 20 ... optical connector housing portion, 22 ... cord introduction port, 23 ... cord discharge port, 24, 25, 27, 31 ... partition piece, 26, 30 ... guide portion, 29 ... tape discharge port (multi-fiber light) Fiber outlet), 44... Drawer means.

Claims (9)

第１側の光ケーブルから延び出る多心光ファイバを光コネクタ接続により、第２側の光ケーブルから延び出る単心光ファイバへ分岐接続させるために、第１側の光ケーブルと第２側の光ケーブルとの結線上に光分岐モジュールを配置させ、前記光分岐モジュールは、枠体内で並設させて光分岐モジュール群として構成させた光成端架において、
前記光分岐モジュールから導出させた光ファイバコードと前記第１側の光ケーブルから延び出る前記多心光ファイバとを光コネクタを介して接続させ、前記光コネクタを収容すると同時に、前記光コネクタから延びる前記光ファイバコードと前記多心光ファイバとの余長をも収容する余長収容トレーを、前記枠体内で前記光分岐モジュール群の前方又は後方に配置させ、
前記枠体の上下方向に並設させた複数の前記余長収容トレーにおいて、前記各余長収容トレーの倒れ角度を、上から下にかけて順次大きくしたことを特徴とする光成端架。In order to branch-connect a multi-core optical fiber extending from the first-side optical cable to a single-core optical fiber extending from the second-side optical cable by optical connector connection, the first-side optical cable and the second-side optical cable are connected to each other. An optical branching module is arranged on the connection, and the optical branching module is arranged side by side in a frame and configured as an optical branching module group.
The optical fiber cord led out from the optical branching module and the multi-fiber optical fiber extending from the first-side optical cable are connected via an optical connector, and the optical connector is accommodated, and at the same time, the optical connector extends from the optical connector. An extra-length accommodating tray that accommodates an extra length of the optical fiber cord and the multi-core optical fiber is disposed in front of or behind the optical branching module group in the frame ,
In the plurality of surplus length accommodation trays arranged side by side in the vertical direction of the frame body, the tilt angle of each surplus length accommodation tray is sequentially increased from top to bottom . 前記余長収容トレーは、前記光分岐モジュール群側に倒れるように傾けられて設置されることを特徴とする請求項１記載の光成端架。  The optical termination rack according to claim 1, wherein the extra-length accommodating tray is installed so as to be inclined toward the optical branching module group. 前記余長収容トレーは、傾き角度調整自在に設置されていることを特徴とする請求項２記載の光成端架。  The optical termination frame according to claim 2, wherein the extra length accommodation tray is installed so as to freely adjust an inclination angle. 前記余長収容トレー内には、仕切片により形成した前記光ファイバコード用の第１の余長経路と前記多心光ファイバ用の第２の余長経路と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成端架。The extra length accommodation tray is provided with a first extra length path for the optical fiber cord formed by a partition piece and a second extra length path for the multi-fiber optical fiber. The optical termination according to any one of claims 1 to 3 . 前記余長収容トレー内には、複数の前記光コネクタを並設させて収容する光コネクタ収容部を有し、前記第１の余長経路のコード排出口に、前記光コネクタ収容部の一端側に位置するＲ形状のガイド部を配置させたことを特徴とする請求項４記載の光成端架。The surplus length accommodating tray has an optical connector accommodating portion for accommodating a plurality of the optical connectors arranged side by side, and one end side of the optical connector accommodating portion at the cord outlet of the first extra length path 5. An optical termination frame according to claim 4, wherein an R-shaped guide portion located at the position is arranged. 前記余長収容トレーの前部には、前記枠体内における前記各光分岐モジュールの位置に対応して一列に整列させた光ファイバ挿入溝が形成され、前記余長収容トレー内には、前記光コネクタ収容部が前記光ファイバ挿入溝の配列方向に対して平行に延在し、前記第１の余長経路は、前記光ファイバ挿入溝の一方の整列端側に位置するコード導入口から前記光コネクタ収容部の後方側を這い回されて、前記光ファイバ挿入溝の他方の整列端側に位置する前記コード排出口に向けて延在することを特徴とする請求項５記載の光成端架。An optical fiber insertion groove aligned in a line corresponding to the position of each optical branching module in the frame is formed in the front portion of the extra length accommodation tray. The connector housing portion extends in parallel with the arrangement direction of the optical fiber insertion grooves, and the first extra length path extends from the cord introduction port located on one aligned end side of the optical fiber insertion grooves. 6. The optical termination according to claim 5 , wherein the optical termination is wound around the rear side of the connector housing portion and extends toward the cord discharge port located on the other aligned end side of the optical fiber insertion groove. . 第１側の光ケーブルから延び出る多心光ファイバを光コネクタ接続により、第２側の光ケーブルから延び出る単心光ファイバへ分岐接続させるために、第１側の光ケーブルと第２側の光ケーブルとの結線上に光分岐モジュールを配置させ、前記光分岐モジュールは、枠体内で並設させて光分岐モジュール群として構成させた光成端架において、In order to branch-connect a multi-core optical fiber extending from the first-side optical cable to a single-core optical fiber extending from the second-side optical cable by optical connector connection, the first-side optical cable and the second-side optical cable are connected to each other. An optical branching module is arranged on the connection, and the optical branching module is arranged side by side in a frame and configured as an optical branching module group.
前記光分岐モジュールから導出させた光ファイバコードと前記第１側の光ケーブルから延び出る前記多心光ファイバとを光コネクタを介して接続させ、前記光コネクタを収容すると同時に、前記光コネクタから延びる前記光ファイバコードと前記多心光ファイバとの余長をも収容する余長収容トレーを、前記枠体内で前記光分岐モジュール群の前方又は後方に配置させ、The optical fiber cord led out from the optical branching module and the multi-fiber optical fiber extending from the first-side optical cable are connected via an optical connector, and the optical connector is accommodated, and at the same time, the optical connector extends from the optical connector. An extra-length accommodating tray that accommodates an extra length of the optical fiber cord and the multi-core optical fiber is disposed in front of or behind the optical branching module group in the frame,
前記余長収容トレー内には、仕切片により形成した前記光ファイバコード用の第１の余長経路と前記多心光ファイバ用の第２の余長経路とが設けられ、In the extra length accommodation tray, a first extra length path for the optical fiber cord formed by a partition piece and a second extra length path for the multi-fiber optical fiber are provided,
前記余長収容トレー内には、複数の前記光コネクタを並設させて収容する光コネクタ収容部を有し、前記第１の余長経路のコード排出口に、前記光コネクタ収容部の一端側に位置するＲ形状のガイド部を配置させ、The surplus length accommodating tray has an optical connector accommodating portion for accommodating a plurality of the optical connectors arranged side by side, and one end side of the optical connector accommodating portion at the cord outlet of the first extra length path R-shaped guide part located at
前記余長収容トレーの前部には、前記枠体内における前記各光分岐モジュールの位置に対応して一列に整列させた光ファイバ挿入溝が形成され、前記余長収容トレー内には、前記光コネクタ収容部が前記光ファイバ挿入溝の配列方向に対して平行に延在し、前記第１の余長経路は、前記光ファイバ挿入溝の一方の整列端側に位置するコード導入口から前記An optical fiber insertion groove aligned in a line corresponding to the position of each optical branching module in the frame is formed in the front portion of the extra length accommodation tray. The connector housing portion extends in parallel to the arrangement direction of the optical fiber insertion grooves, and the first extra length path extends from the cord introduction port located on one aligned end side of the optical fiber insertion grooves. 光コネクタ収容部の後方側を這い回されて、前記光ファイバ挿入溝の他方の整列端側に位置する前記コード排出口に向けて延在することを特徴とする成端架。A termination rack that is wound around the rear side of the optical connector housing portion and extends toward the cord discharge port located on the other aligned end side of the optical fiber insertion groove. 前記余長収容トレーは、引出し手段を介して前記枠体内で取付けられていることを特徴とする請求項７記載の光成端架。8. The optical termination rack according to claim 7, wherein the extra length accommodation tray is attached in the frame body through a drawing means. 前記第２の余長経路の多心光ファイバ排出口に、前記光コネクタ収容部の他端側に位置するＲ形状のガイド部を配置させたことを特徴とする請求４〜８のいずれか一項記載の光成端架。The multi-fiber optical fiber outlet of the second extra length path, any one of claims 4-8, characterized in that is disposed a guide portion of the R-shape which is located at the other end of the optical connector housing section The optical termination described in the item.
JP26544798A 1998-09-18 1998-09-18 Optical termination Expired - Fee Related JP4029494B2 (en)

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