JP3794540B2 - Optical fiber extra length accommodation device - Google Patents

Optical fiber extra length accommodation device Download PDF

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Publication number
JP3794540B2
JP3794540B2 JP34432999A JP34432999A JP3794540B2 JP 3794540 B2 JP3794540 B2 JP 3794540B2 JP 34432999 A JP34432999 A JP 34432999A JP 34432999 A JP34432999 A JP 34432999A JP 3794540 B2 JP3794540 B2 JP 3794540B2
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optical fiber
extra length
length
extra
partition plate
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JP2001159714A (en
Inventor
良 奥田
剛行 中野
学 鶴岡
恒司 峰
史 泉田
信夫 富田
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THE FURUKAW ELECTRIC CO., LTD.
Nippon Telegraph and Telephone Corp
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THE FURUKAW ELECTRIC CO., LTD.
Nippon Telegraph and Telephone Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、例えば電話通信などの光通信に用いられる光ファイバ余長収容装置に関するものである。
【０００２】
【従来の技術】
光ファイバ通信の１つとして、例えば電話通信がある。各電話加入者の設備は成端ケーブルと呼ばれる光ファイバケーブルにより電話局側と接続されており、その光ファイバケーブルを通して電話通信が行われている。光ファイバケーブルには、複数の光ファイバが収容されており、光ファイバケーブルを用いて電話通信などを行なう際に、光ファイバケーブルから引き出した光ファイバの余長部分を光ファイバ余長収容装置内に収容することが行われている。なお、一般に、光ファイバケーブルから光ファイバを引き出すときには、複数本の光ファイバを並設してなる光ファイバテープ心線の形態で引き出される。
【０００３】
図８の（ａ）、（ｂ）には、それぞれ、従来の光ファイバ余長収容装置の例が斜視図により示されている。これらの図に示されるように、光ファイバ余長収容装置は１つ以上（同図では１つ）の光ファイバ余長収容棚２を有しており、該光ファイバ余長収容棚２の上部内壁と底部内壁にはそれぞれ、複数のレール支持部１７が互いに間隔を介し、余長収容棚２の手前側から奥側にかけて図のＹ方向に設けられている。
【０００４】
レール支持部１７にはレール１８が支持され、このレール１８にスライド自在に空き心線箱１２が設けられている。なお、図８において、空き心線箱１２は１つのみ示しているが、一般に、レール支持部１７の本数に対応させて複数の空き心線箱１２が設けられる。
【０００５】
空き心線箱１２には、光ファイバケーブルから引き出された光ファイバテープ心線１の余長部分を収容する余長収容部１５が設けられている。この余長収容部１５は、空き心線箱１２の手前側の左右両側に設けられており、例えば図９の（ｂ）に示すように、扉部１４によって閉じられるようになっている。なお、図８においては、扉部１４を省略して示している。それぞれの余長収容部１５には、曲面状のガイド部１１が設けられており、光ファイバテープ心線１の余長部分はガイド部１１にガイドされ、８の字形に配線されて収容される。
【０００６】
また、図８の（ａ）に示すように、光ファイバテープ心線１の先端側には端末コネクタ３が設けられ、端末コネクタ３は余長収容部１５の手前側に着脱自在に取り付けられる。そして、同図の（ｂ）に示すように、光スイッチ１０への接続用のアダプタボックス４が設けられている光ファイバ余長収容装置の場合には、端末コネクタ３は、必要に応じてアダプタボックス４に着脱自在に接続される。
【０００７】
なお、電話局側と電話加入者側を接続する光ファイバケーブルに断線などの何らかの支障が生じると、電話通信を行うことができないため、光ファイバケーブルの断線の有無を検出するといった、ＯＴＤＲ（Ｏｐｔｉｃａｌ Ｔｉｍｅ Ｄｏｍａｉｎ Ｒｅｆｌｅｃｔｍｅｔｅｒ）による光ファイバケーブルの監視システムが提案されており、前記光スイッチ１０は、アダプタボックス４に接続された端末コネクタ３付きの光ファイバテープ心線１をＯＴＤＲに切替え自在に接続する。
【０００８】
また、図９の（ａ）に示すような、光カプラユニット９を光ファイバ収容棚２に収容するときには、空き心線箱１２の奥側に光カプラユニット９を設け、光カプラユニット９を介して光ファイバテープ心線１を光スイッチ１０に接続することが行なわれる。この場合は、同図の（ｂ）に示すように、光カプラユニット９を空き心線箱１２と共に光ファイバ余長収容棚２に収容し、光カプラユニット９の一方の引き出し部１６ａ（同図の（ａ）参照）から引き出されたカプラ側光ファイバテープ心線１３ａの先端のカプラ側コネクタ６ａが、光ファイバテープ心線１の先端の端末コネクタ３に接続される。
【０００９】
そして、図１０に示すように、カプラ側光ファイバテープ心線１３ａの余長部分とケーブル側の光ファイバテープ心線１の余長部分は、共に８の字形に配線されて余長収容部１５に収容される。前記カプラ側コネクタ６ａと端末コネクタ３は、共に余長収容部１５の手前側に着脱自在に取り付けられる。
【００１０】
また、光カプラユニット９の他方の引き出し部１６ｂからカプラ側光ファイバテープ心線１３ｂを引き出し、その先端のカプラ側コネクタ６ｂを光スイッチ１０に接続することにより、ケーブル側の光ファイバテープ心線１が光カプラユニット９を介して光スイッチ１０に接続される。
【００１１】
なお、前記の如く、余長収容部１５は、空き心線箱１２の左右両側に設けられているために、光カプラユニット９からカプラ側コネクタ６ａ付きのカプラ側光ファイバテープ心線１３ａを２本引き出せば、引き出した２本のカプラ側光ファイバテープ心線１３ａを、それぞれ対応するケーブル側光ファイバテープ心線１に接続することができる。そして、２本の各ケーブル側光ファイバテープ心線１をそれぞれ、光カプラユニット９を介して、光スイッチ１０に接続することができる。
【００１２】
【発明が解決しようとする課題】
ところで、上記のような従来の光ファイバ余長収容装置においては、いずれも、余長収容部１５を引き出して、光ファイバテープ心線１の余長部分を８の字配線収容することが行われ、また、光ファイバテープ心線１の光カプラユニット９との接続切り替え時には、同様に、余長収容部１５を引き出して、ケーブル側の光ファイバテープ心線１と光カプラユニット９のカプラ側光ファイバテープ心線１３ａを余長収容部１５内に８の字配線し直すことが行われるため、ケーブル側の光ファイバテープ心線１の余長部分収容や光カプラユニット９との接続切り替え作業の作業性が非常に悪かった。
【００１３】
本発明は、上記従来の課題を解決するためになされたものであり、その目的は、光ファイバケーブルから引き出された光ファイバの余長部分の収容や光カプラユニットとの接続切り替え時の光ファイバ余長部分の収容を作業性良く行なうことができる光ファイバ余長収容装置を提供することにある。
【００１４】
【課題を解決するための手段】
上記目的を達成するために、本発明は次のような構成をもって課題を解決するための手段としている。すなわち、第１の発明は、上部壁と底部壁と横方向の端部の壁を有して手前側の端面が開口されている箱状の光ファイバ余長収容棚を１つ以上有し、該光ファイバ余長収容棚の箱状の内部空間がそれぞれ間隔を介して縦向き姿勢で横方向に配列された複数の仕切り板により仕切られ、それぞれの光ファイバ余長収容棚に前記仕切り板により区分されて手前側が開口状態の空間部から成る複数の区分領域が配列形成されており、該それぞれの区分領域が光ファイバケーブルから引き出された光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に前記区分領域の前記手前側の開口から挿入して該区分領域の空間に非拘束状態で収容する余長部分個別収容部と成しており、前記それぞれの余長収容棚の底部内壁と上部内壁の少なくとも一方には仕切り板をガイドするガイドレールが前記余長収容棚の手前側から奥側にかけて設けられており、前記仕切り板はガイドレールにスライド自在に設けられている構成をもって課題を解決する手段としている。
【００１６】
さらに、第２の発明は、上記第１の発明の構成に加え、前記仕切り板は余長収容棚の奥行き以上の奥行きを有して余長収容棚の手前側から奥側にかけて設けられている構成をもって課題を解決する手段としている。
【００１７】
さらに、第３の発明は、上記第１の発明の構成に加え、前記余長収容棚の奥行き未満の奥行きを有する仕切り板が設けられている構成をもって課題を解決する手段としている。
【００１８】
さらに、第４の発明は、上記第１の発明の構成に加え、それぞれの余長収容棚の内側高さ未満の高さを有する仕切り板が設けられている構成をもって課題を解決する手段としている。
【００１９】
上記構成の本発明においては、光ファイバ余長収容棚がそれぞれ間隔を介して縦向き姿勢で横方向に配列された複数の仕切り板により仕切られ、それぞれの光ファイバ余長収容棚に仕切り板による複数の区分領域が配列形成されており、該それぞれの区分領域が光ファイバケーブルから引き出された光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に収容する余長部分個別収容部と成しているために、従来のように光ファイバの余長部分を収容するための空き心線箱がなくても、光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に収容することが可能となる。
【００２０】
したがって、空き心線箱に光ファイバ余長部分を８の字形に収容する場合と異なり、本発明においては、光ファイバ余長部分の収容が非常に容易に行なえる。また、本発明において、前記余長部分個別収容部にそれぞれ光カプラユニットなどを設けることにより、光カプラユニットも区分け収容することが可能となり、光カプラユニットとの接続切り替えや、接続切り替え時の光ファイバ余長部分の収容を作業性良く行なうことが可能となる。
【００２１】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。なお、本実施形態例の説明において、従来例と同一名称部分には同一符号を付し、その重複説明は省略する。図１には、本発明に係る光ファイバ余長収容装置の一実施形態例の要部構成が斜視図によって示されている。
【００２２】
同図に示すように、本実施形態例の光ファイバ余長収容装置は、１つ以上（同図では１つ）の光ファイバ余長収容棚２を有しており、該光ファイバ余長収容棚２は、それぞれ間隔を介して縦向き姿勢で横方向に配列された複数の仕切り板５により仕切られている。そして、光ファイバ余長収容棚２に、仕切り板５による複数の区分領域が配列形成されており、該それぞれの区分領域が光ファイバケーブルから引き出された光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に収容する余長部分個別収容部２０と成している。
【００２３】
なお、本実施形態例の光ファイバ余長収容装置を用いて光ファイバの余長部分を収容する際も、光ファイバは光ファイバテープ心線１の形態で光ファイバケーブルから引き出される。したがって、本実施形態例の光ファイバ余長収容装置の各余長部分個別収容部２０に１本の光ファイバテープ心線１を収容した場合、複数本の光ファイバの余長部分が、それぞれの余長部分個別収容部２０に収容されることになる。図１では、２本の光ファイバテープ心線１を１つの余長部分個別収容部２０に収容する例が示されている。
【００２４】
また、本実施形態例では、図２の（ａ）に示すように、余長収容棚２の底部内壁には、仕切り板５をガイドするガイドレール７が、余長収容棚２の手前側から奥側にかけて設けられている。ガイドレール７には、仕切り板５をスライド自在に嵌合する嵌合溝８が設けられており、図１の（ｂ）に示すように、仕切り板５はガイドレール７にスライド自在に設けられている。
【００２５】
図３に示すように、各仕切り板５の奥行きＤは余長収容棚２の奥行とほぼ同じに形成されており、余長収容棚２の手前側から奥側にかけて設けられている。仕切り板５は、例えばプラスチック製の板により形成されている。なお、図３において、アダプタボックス４の配設領域は省略して示している。
【００２６】
また、図３，４には、本実施形態例の光ファイバ余長収容装置の適用例として、前記余長部分個別収容部２０に光カプラユニット９を設けた構成例が示されている。これらの図に示すように、本実施形態例の光ファイバ余長収容装置に光カプラユニット９を収容する場合は、従来の光カプラユニット９と異なり、１つの光カプラユニット９の一方の引き出し部から１本ずつカプラ側光ファイバテープ心線１３ａを引き出す構成とし、この光カプラユニット９を上下に重ねて１つの余長部分個別収容部２０に収容する構成とする。
【００２７】
そして、図４の（ａ）に示すように、各カプラ側光ファイバテープ心線１３ａの先端側のカプラ側コネクタ６ａをそれぞれ、光ファイバケーブルから引き出したケーブル側光ファイバテープ心線１の先端側の端末コネクタ３と接続する。また、同図の（ｂ）に示すように、各光カプラユニット９の他方の引き出し部から引き出したカプラ側光ファイバテープ心線１３ｂの先端側のカプラ側コネクタ６ｂをアダプタボックス４にそれぞれ接続する。このようにすると、それぞれ、ケーブル側の光ファイバテープ心線１が、対応する光カプラユニット９を介して光スイッチ１０に接続される。
【００２８】
本実施形態例は以上のように構成されており、光ファイバ余長収容棚２が、間隔を介して縦向き姿勢で横方向に配列された複数の仕切り板５により仕切り、光ファイバ余長収容棚２に仕切り板５による複数の区分領域を配列形成し、それぞれの区分領域を、ケーブル側の光ファイバテープ心線１の余長部分を予め定めた本数だけ個別に収容する余長部分個別収容部２０としたために、従来のようにケーブル側の光ファイバテープ心線１の余長部分を収容するための空き心線箱１２を設ける必要がなく、ケーブル側の光ファイバテープ心線１の余長部分を予め定めた本数ごとに個別に収容することができる。
【００２９】
したがって、本実施形態例によれば、従来のように、空き心線箱１２にケーブル側の光ファイバテープ心線１の余長部分を８の字形に収容する場合と異なり、光ファイバテープ心線１の余長部分の収容を非常に容易に行なうことができるし、装置構成を非常に簡単にすることができ、コストの安い光ファイバ余長収容装置とすることができる。
【００３０】
また、本実施形態例によれば、余長部分個別収容部２０を形成する仕切り板５を、余長収容棚２の手前側から奥側にかけて設けたガイドレール７にスライド自在に設けたために、必要な部分にのみ仕切り板５を配設し、不要になった場合には仕切り板５を取り外すこともできる。したがって、仕切り板５を無駄に配設することを防ぐことができる。
【００３１】
さらに、図３，４に示したように、本実施形態例の光ファイバ余長収容装置に光カプラユニット９を収容する構成とすると、それぞれの光カプラユニット９を区分け収容することができ、しかも、光カプラユニット９とケーブル側の光ファイバテープ心線１との接続切り替えおよびケーブル側光ファイバテープ心線１およびカプラ側光ファイバテープ心線１３の余長部分の収容は、従来の８の字配線を行なわずにできるために、上記作業を作業性良く行なうことができる。
【００３２】
なお、本発明は上記実施形態例に限定されることはなく、様々な実施の態様を採り得る。例えば上記実施形態例では、光ファイバ余長収容装置はアダプタボックス４を有する構成としたが、光ファイバ余長収容装置は必ずしもアダプタボックス４を有するとは限らず、例えば図５に示すように、アダプタボックス４を省略した構成としてもよい。
【００３３】
このようにした場合も、光ファイバテープ心線１の先端側の端末コネクタ３を余長部分個別収容部２０の手前側に配置して光ファイバテープ心線１を収容すれば、光ファイバテープ心線１の余長部分を予め定めた本数ごとに個別に余長部分個別収容部２０に収容し、端末コネクタ３を利用して接続相手側に接続することができる。
【００３４】
また、上記実施形態例では、仕切り板５を余長収容棚２の手前側から奥側にかけて設けたガイドレール７にスライド自在に設けたが、参考例として、図２の（ｂ）に示すように、仕切り板５をガイドレール７に固定して設けたものを示す。
【００３５】
さらに、上記実施形態例では、余長収容棚２の底部内壁に、仕切り板５をガイドするガイドレール７を設けたが、ガイドレール７は余長収容棚２の上部内壁に設けてもよいし、余長収容棚２の上部内壁と底部内壁の両方に設けてもよい。
【００３６】
さらに、上記実施形態例では、仕切り板５は余長収容棚２の奥行きとほぼ同じ奥行きを有していたが、仕切り板５は、余長収容棚２の奥行き以上の奥行きを有するものとし、この仕切り板５を余長収容棚２の手前側から奥側にかけて設けてもよい。
【００３７】
さらに、図６に示すように、余長収容棚２の奥行き未満の奥行きＤを有する仕切り板５を設けて光ファイバ余長収容装置を構成してもよいし、図７に示すように、余長収容棚２の内側高さ未満の高さＨを有する仕切り板５を設けて光ファイバ余長収容装置を構成してもよい。
【００３８】
図６，７に示したように、仕切り板５の奥行きや高さを小さくした場合でも、光ファイバテープ心線１の余長部分の長さや余長部分収容形態によっては（例えば光ファイバテープ心線１の余長部分の長さがそれぼど長くなかったり、光ファイバテープ心線１の余長部分を余長収容棚２の手前側下部のみに収容したりする場合には）、光ファイバテープ心線１を予め定めた本数ごとに個別に対応する余長部分個別収容部２０に的確に収容することができ、さらに、仕切り板５の奥行きや高さを小さくした分だけ、仕切り板５のサイズを小さくして、光ファイバ余長収容装置のコストを低減できる。
【００３９】
さらに、上記実施形態例では、１つの光ファイバ余長収容棚２を有する構成としたが、本発明の光ファイバ余長収容装置は、２つ以上の光ファイバ余長収容棚２を有する構成としてもよい。
【００４０】
さらに、上記実施形態例では、光ファイバケーブルから引き出された光ファイバは、光ファイバテープ心線１の形態で引き出されて光ファイバ余長収容装置に収容されていたが、光ファイバケーブルから引き出す光ファイバの形態は特に限定されるものではなく適宜設定されるものであり、例えば光ファイバを１本ずつ引き出してもよい。
【００４１】
【発明の効果】
本発明によれば、光ファイバ余長収容棚がそれぞれ間隔を介して縦向き姿勢で横方向に配列された複数の仕切り板により仕切られて複数の区分領域が配列形成され、該それぞれの区分領域が光ファイバケーブルから引き出された光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に収容する余長部分個別収容部と成しているために、従来のように光ファイバの余長部分を収容するための空き心線箱がなくても、光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に収容することができる。
【００４２】
したがって、空き心線箱に光ファイバ余長部分を８の字形に収容する場合と異なり、本発明の光ファイバ余長収容装置を用いることにより、光ファイバ余長部分の収容を非常に容易に行なうことができ、装置コストも安くできる。また、本発明において、前記余長部分個別収容部にそれぞれ光カプラユニットなどを設けることにより、光カプラユニットも区分け収容することが可能となり、光カプラユニットとの接続切り替えや、接続切り替え時の光ファイバ余長部分の収容を作業性良く行なうことができる。
【００４３】
また、本発明は、それぞれの余長収容棚の底部内壁と上部内壁の少なくとも一方には仕切り板をガイドするガイドレールが前記余長収容棚の手前側から奥側にかけて設けられており、前記仕切り板はガイドレールにスライド自在に設けられているので、必要なところにだけ仕切り板を設け、仕切り板が不要となったときには、仕切り板を取り外すことができるため、仕切り板を無駄に配設することを防ぐことができる。
【００４４】
さらに、仕切り板は余長収容棚の奥行き以上の奥行きを有して余長収容棚の手前側から奥側にかけて設けられている本発明によれば、余長収容棚を手前側から奥側にかけて仕切り板によって仕切ることができるために、各余長部分個別収容部に収容される光ファイバ群が他の余長部分個別収容部に収容された光ファイバ群と干渉することが全くなく、光ファイバ群の個別収容をより一層確実なものとすることができる。
【００４５】
さらに、余長収容棚の奥行き未満の奥行きを有する仕切り板が設けられている本発明や、それぞれの余長収容棚の内側高さ未満の高さを有する仕切り板が設けられている本発明によれば、光ファイバの余長部分の長さや余長部分収容形態によっては、光ファイバ群の個別収容部を的確にすることができるし、仕切り板の奥行きや高さを小さくした分だけ、仕切り板のサイズを小さくして、光ファイバ余長収容装置のコストを低減できる。
【図面の簡単な説明】
【図１】本発明に係る光ファイバ余長収容装置の一実施形態例を示す要部構成図である。
【図２】 図２の（ａ）は、上記実施形態例および本発明に係る光ファイバ余長収容装置の他の実施形態例における仕切り板配設構成を、図１の（ａ）のＡ枠内部分を拡大することによって示す正面図であり、図２の（ｂ）は、仕切り板配設構成の参考図である。
【図３】上記実施形態例の仕切り板の奥行き構成を、上記実施形態例の光ファイバ余長収容装置に光カプラユニットを設けた状態で示す説明図である。
【図４】上記実施形態例の光ファイバ余長収容装置に光カプラユニット９を設け、光カプラユニット９を介してケーブル側の光ファイバテープ心線１をアダプタユニット４に接続する例を示す説明図である。
【図５】本発明に係る光ファイバ余長収容装置の他の実施形態例を示す説明図である。
【図６】本発明に係る光ファイバ余長収容装置のさらに他の実施形態例を示す説明図である。
【図７】本発明に係る光ファイバ余長収容装置のさらにまた他の実施形態例を示す説明図である。
【図８】従来の光ファイバ余長収容装置の例を示す説明図である。
【図９】従来の光ファイバ余長収容装置に光カプラユニット９と空き心線箱１２を共に設ける場合の光カプラユニット９と空き心線箱１２の接続例（ａ）と、従来の光ファイバ余長収容装置における光カプラユニット９および空き心線箱１２の配置例を示す説明図（ｂ）である。
【図１０】従来の光ファイバ余長収容装置における光カプラユニット９を介してのケーブル側光ファイバテープ心線１のアダプタユニット４への接続例を示す説明図である。
【符号の説明】
１ 光ファイバテープ心線
２ 余長収容棚
３ 端末コネクタ
４ アダプタボックス
５ 仕切り板
６ 光カプラ側コネクタ
７ ガイドレール
８ 嵌合溝
９ 光カプラユニット
１０ 光スイッチ
１３ カプラ側光ファイバテープ心線
２０ 余長部分個別収容部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical fiber extra length accommodation apparatus used for optical communication such as telephone communication.
[0002]
[Prior art]
One example of optical fiber communication is telephone communication. The equipment of each telephone subscriber is connected to the central office side by an optical fiber cable called a termination cable, and telephone communication is performed through the optical fiber cable. The optical fiber cable contains a plurality of optical fibers, and when performing telephone communication using the optical fiber cable, the extra length of the optical fiber drawn from the optical fiber cable is stored in the optical fiber extra length accommodation device. Is being accommodated in. In general, when an optical fiber is drawn out from an optical fiber cable, the optical fiber is drawn out in the form of an optical fiber ribbon formed by arranging a plurality of optical fibers in parallel.
[0003]
FIGS. 8A and 8B are perspective views showing examples of conventional optical fiber extra length accommodation devices. As shown in these figures, the optical fiber surplus length accommodation device has one or more (one in the figure) optical fiber surplus length accommodation shelves 2, and the upper part of the optical fiber surplus length accommodation shelves 2. Each of the inner wall and the bottom inner wall is provided with a plurality of rail support portions 17 in the Y direction in the figure from the near side to the far side of the extra length accommodation shelf 2 with a space between each other.
[0004]
A rail 18 is supported on the rail support portion 17, and an empty core box 12 is provided on the rail 18 so as to be slidable. In FIG. 8, only one empty core box 12 is shown, but in general, a plurality of empty core boxes 12 are provided corresponding to the number of rail support portions 17.
[0005]
The empty core box 12 is provided with an extra length accommodating portion 15 for accommodating an extra length portion of the optical fiber ribbon 1 drawn from the optical fiber cable. The extra length accommodating portions 15 are provided on the left and right sides of the front side of the empty core wire box 12 and are closed by a door portion 14 as shown in FIG. In FIG. 8, the door portion 14 is omitted. Each extra length accommodating portion 15 is provided with a curved guide portion 11, and the extra length portion of the optical fiber ribbon 1 is guided by the guide portion 11 and wired and accommodated in a figure 8 shape. .
[0006]
Further, as shown in FIG. 8A, a terminal connector 3 is provided on the distal end side of the optical fiber ribbon 1, and the terminal connector 3 is detachably attached to the front side of the extra length accommodating portion 15. And in the case of the optical fiber extra length accommodation apparatus provided with the adapter box 4 for connection to the optical switch 10, as shown in (b) of the figure, the terminal connector 3 is an adapter as needed. The box 4 is detachably connected.
[0007]
It should be noted that if any trouble such as disconnection occurs in the optical fiber cable connecting the central office side and the telephone subscriber side, telephone communication cannot be performed, so that the presence or absence of disconnection of the optical fiber cable is detected. An optical fiber cable monitoring system based on Time Domain Reflectmeter has been proposed, and the optical switch 10 connects the optical fiber ribbon 1 with the terminal connector 3 connected to the adapter box 4 so as to be switchable to OTDR.
[0008]
Further, when the optical coupler unit 9 is accommodated in the optical fiber accommodation shelf 2 as shown in FIG. 9A, the optical coupler unit 9 is provided on the back side of the empty core wire box 12 and the optical coupler unit 9 is interposed therebetween. Thus, the optical fiber ribbon 1 is connected to the optical switch 10. In this case, as shown in FIG. 5B, the optical coupler unit 9 is housed in the optical fiber extra-length housing shelf 2 together with the empty core box 12, and one drawing portion 16a of the optical coupler unit 9 (see FIG. The coupler-side connector 6a at the tip of the coupler-side optical fiber ribbon 13a drawn from (a) of FIG. 9 is connected to the terminal connector 3 at the tip of the optical fiber ribbon 1.
[0009]
As shown in FIG. 10, the extra length portion of the coupler-side optical fiber ribbon 13a and the extra length portion of the cable-side optical fiber ribbon 1 are both wired in a figure 8 shape so that the extra length accommodating portion 15 is formed. Is housed in. The coupler-side connector 6a and the terminal connector 3 are both detachably attached to the front side of the extra length accommodating portion 15.
[0010]
Further, by pulling out the coupler-side optical fiber ribbon 13b from the other lead portion 16b of the optical coupler unit 9, and connecting the coupler-side connector 6b at the tip thereof to the optical switch 10, the optical fiber ribbon 1 on the cable side is connected. Are connected to the optical switch 10 via the optical coupler unit 9.
[0011]
As described above, since the surplus length accommodating portions 15 are provided on both the left and right sides of the empty core wire box 12, the coupler-side optical fiber tape core wire 13a with the coupler-side connector 6a is connected from the optical coupler unit 9 to the two. With this drawing, it is possible to connect the two drawn coupler-side optical fiber ribbons 13a to the corresponding cable-side optical fiber ribbons 1 respectively. Each of the two cable-side optical fiber ribbons 1 can be connected to the optical switch 10 via the optical coupler unit 9.
[0012]
[Problems to be solved by the invention]
By the way, in any of the conventional optical fiber extra length accommodation devices as described above, the extra length accommodation portion 15 is pulled out and the extra length portion of the optical fiber ribbon 1 is accommodated in the figure 8 wiring. When switching the connection of the optical fiber ribbon 1 to the optical coupler unit 9, similarly, the extra length accommodating portion 15 is pulled out to connect the optical fiber tape core 1 on the cable side and the coupler side light of the optical coupler unit 9. Since the fiber tape core wire 13a is re-wired into the extra length accommodating portion 15, the extra length portion accommodation of the optical fiber tape core wire 1 on the cable side and the connection switching operation with the optical coupler unit 9 are performed. Workability was very bad.
[0013]
The present invention has been made in order to solve the above-described conventional problems, and an object of the present invention is to accommodate an extra length portion of an optical fiber drawn from an optical fiber cable and to switch an optical fiber during connection switching with an optical coupler unit. An object of the present invention is to provide an optical fiber extra length accommodation device capable of accommodating the extra length portion with good workability.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the first invention has one or more box-shaped optical fiber extra-length storage shelves having an upper wall, a bottom wall, and a lateral end wall, and an end surface on the near side being opened . partitioned by a plurality of partition plates which box-shaped inner space of the optical fiber excess length shelves are arranged laterally vertical posture through respective intervals, said partition plate in each of the optical fiber excess length shelf yo Ri and partitioned by the front side is a plurality of segmented regions arranged and formed Ru consists space of the opening state, 1 each segmented region said is predetermined extra length portion of the optical fiber drawn from an optical fiber cable Each of the optical fiber groups is individually inserted through the opening on the near side of the segmented region, and is formed as an extra length individual accommodating unit that is accommodated in the segmented region in an unconstrained state . There are few bottom inner walls and upper inner walls And provided toward the rear side guide rails for guiding the partition plate from the front side of the extra length of the shelves is also one, the partition plate is means for solving the problems with the configuration provided slidably in the guide rail It is said.
[0016]
Further, according to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the partition plate has a depth equal to or greater than the depth of the extra length accommodation shelf and is provided from the front side to the rear side of the extra length accommodation shelf. The structure is a means to solve the problem.
[0017]
Furthermore, the third invention is a means for solving the problem with a configuration in which a partition plate having a depth less than the depth of the extra length accommodation shelf is provided in addition to the configuration of the first invention.
[0018]
Further, the fourth invention is a means for solving the problems with a configuration in which a partition plate having a height less than the inner height of each extra length accommodation shelf is provided in addition to the configuration of the first invention. .
[0019]
In the present invention having the above-described configuration, the optical fiber surplus length accommodation shelves are partitioned by a plurality of partition plates arranged in the horizontal direction in the vertical orientation with intervals, and each optical fiber surplus length accommodation shelf is separated by a partition plate. A plurality of segmented regions are formed, and each segmented region accommodates an extra length portion of the optical fiber drawn from the optical fiber cable individually for each of one or more predetermined optical fiber groups. Since it is configured as an individual accommodating portion, one or more light beams having a predetermined excess length of the optical fiber are determined even if there is no empty core box for accommodating the excess length of the optical fiber as in the prior art. Each fiber group can be accommodated individually.
[0020]
Therefore, unlike the case where the optical fiber extra length portion is accommodated in the figure 8 shape in the empty core wire box, the optical fiber extra length portion can be accommodated very easily in the present invention. Also, in the present invention, by providing an optical coupler unit or the like in each of the extra length portion individual accommodating portions, it becomes possible to separately accommodate the optical coupler unit, and switching of the connection with the optical coupler unit or light at the time of switching the connection is possible. The extra fiber portion can be accommodated with good workability.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present embodiment, the same reference numerals are assigned to the same name portions as in the conventional example, and the duplicate description thereof is omitted. FIG. 1 is a perspective view showing the main configuration of an embodiment of an optical fiber extra length accommodation apparatus according to the present invention.
[0022]
As shown in the figure, the optical fiber extra length accommodation apparatus of the present embodiment has one or more (one in the figure) optical fiber extra length accommodation shelves 2, and the optical fiber extra length accommodation unit. The shelf 2 is partitioned by a plurality of partition plates 5 that are arranged in the horizontal direction in the vertical orientation with intervals therebetween. The optical fiber surplus length accommodating shelf 2 is formed with a plurality of segmented regions formed by the partition plates 5, and each segmented region is a predetermined length of the optical fiber drawn from the optical fiber cable. The extra length portion individual accommodating portion 20 is individually accommodated for each of the optical fiber groups equal to or more than one.
[0023]
In addition, also when accommodating the extra length part of an optical fiber using the optical fiber extra length accommodation apparatus of this embodiment, an optical fiber is pulled out from the optical fiber cable with the form of the optical fiber tape core wire 1. FIG. Therefore, when one optical fiber tape core wire 1 is accommodated in each extra length portion individual accommodation portion 20 of the optical fiber extra length accommodation apparatus of the present embodiment, the extra length portions of a plurality of optical fibers are respectively It will be accommodated in the extra length part individual accommodating part 20. In FIG. 1, an example is shown in which two optical fiber ribbons 1 are accommodated in one extra length individual accommodating portion 20.
[0024]
Further, in this embodiment, as shown in FIG. 2A, a guide rail 7 that guides the partition plate 5 is provided on the bottom inner wall of the surplus length storage shelf 2 from the front side of the surplus length storage shelf 2. It is provided over the back side. The guide rail 7 is provided with a fitting groove 8 for slidably fitting the partition plate 5, and the partition plate 5 is slidably provided on the guide rail 7 as shown in FIG. ing.
[0025]
As shown in FIG. 3, the depth D of each partition plate 5 is formed to be substantially the same as the depth of the surplus length accommodation shelf 2, and is provided from the front side to the back side of the surplus length accommodation shelf 2. The partition plate 5 is formed of, for example, a plastic plate. In FIG. 3, the arrangement area of the adapter box 4 is omitted.
[0026]
3 and 4 show a configuration example in which an optical coupler unit 9 is provided in the extra length portion individual accommodation section 20 as an application example of the optical fiber extra length accommodation apparatus of the present embodiment. As shown in these drawings, when the optical coupler unit 9 is accommodated in the optical fiber surplus length accommodating apparatus of the present embodiment, unlike the conventional optical coupler unit 9, one drawer portion of one optical coupler unit 9 is provided. The coupler-side optical fiber ribbon 13a is pulled out one by one, and the optical coupler unit 9 is stacked in the vertical direction so as to be accommodated in one extra-length portion individual accommodating portion 20.
[0027]
And as shown to (a) of FIG. 4, the coupler side connector 6a of the front end side of each coupler side optical fiber tape core wire 13a is respectively pulled out from the front end side of the cable side optical fiber tape core wire 1 pulled out from the optical fiber cable. The terminal connector 3 is connected. Further, as shown in FIG. 5B, the coupler-side connector 6b on the distal end side of the coupler-side optical fiber ribbon 13b drawn from the other drawing portion of each optical coupler unit 9 is connected to the adapter box 4 respectively. . If it does in this way, the optical fiber tape core wire 1 by the side of a cable will be connected to the optical switch 10 via the corresponding optical coupler unit 9, respectively.
[0028]
The present embodiment is configured as described above, and the optical fiber surplus length accommodation shelf 2 is partitioned by a plurality of partition plates 5 arranged in the horizontal direction in a vertical orientation with a gap therebetween, and the optical fiber surplus length accommodation is achieved. A plurality of segmented areas are formed on the shelf 2 by the partition plates 5, and each segmented area is individually accommodated by a predetermined number of extra length portions of the optical fiber ribbon 1 on the cable side. Since the portion 20 is used, there is no need to provide an empty core box 12 for accommodating the extra length of the optical fiber tape core 1 on the cable side as in the prior art, and the extra optical fiber tape core 1 on the cable side is not required. The long portion can be individually accommodated for each predetermined number.
[0029]
Therefore, according to this embodiment, unlike the conventional case, unlike the conventional case, the extra length portion of the optical fiber ribbon 1 on the cable side is accommodated in the figure 8 shape in the optical fiber ribbon 12. One extra length portion can be accommodated very easily, the device configuration can be simplified, and an inexpensive optical fiber extra length accommodation device can be obtained.
[0030]
Further, according to the present embodiment example, the partition plate 5 forming the extra length portion individual accommodating portion 20 is slidably provided on the guide rail 7 provided from the near side to the far side of the extra length accommodation shelf 2, so that The partition plate 5 can be disposed only in a necessary portion, and the partition plate 5 can be removed when it becomes unnecessary. Therefore, it is possible to prevent the partition plate 5 from being disposed wastefully.
[0031]
Further, as shown in FIGS. 3 and 4, when the optical coupler unit 9 is accommodated in the optical fiber surplus accommodating apparatus of the present embodiment, the respective optical coupler units 9 can be separately accommodated. The connection switching between the optical coupler unit 9 and the optical fiber tape core 1 on the cable side and the accommodation of the extra length portions of the cable side optical fiber tape core 1 and the coupler side optical fiber tape core 13 are shown in FIG. Since it can be done without wiring, the above work can be performed with good workability.
[0032]
In addition, this invention is not limited to the said embodiment example, Various aspects can be taken. For example, in the above embodiment, the optical fiber surplus length accommodation apparatus is configured to have the adapter box 4, but the optical fiber surplus length accommodation apparatus does not necessarily have the adapter box 4, for example, as shown in FIG. The adapter box 4 may be omitted.
[0033]
Also in this case, if the terminal connector 3 on the distal end side of the optical fiber ribbon 1 is disposed on the front side of the extra length individual accommodating portion 20 to accommodate the optical fiber ribbon 1, the optical fiber ribbon 1 is accommodated. The surplus length portions of the line 1 can be individually accommodated in the surplus length portion individual accommodating portion 20 for each predetermined number, and can be connected to the connection partner side using the terminal connector 3.
[0034]
Further, in the above embodiment, the partition plate 5 is slidably provided on the guide rail 7 provided from the near side to the far side of the extra length accommodation shelf 2, but as a reference example, as shown in FIG. 1 shows a structure in which the partition plate 5 is fixed to the guide rail 7.
[0035]
Furthermore, in the above embodiment, the guide rail 7 for guiding the partition plate 5 is provided on the bottom inner wall of the surplus length accommodation shelf 2, but the guide rail 7 may be provided on the upper inner wall of the surplus length accommodation shelf 2. Further, it may be provided on both the upper inner wall and the bottom inner wall of the extra-length storage shelf 2.
[0036]
Furthermore, in the above embodiment, the partition plate 5 has substantially the same depth as the depth of the extra-length storage shelf 2, but the partition plate 5 has a depth that is greater than or equal to the depth of the extra-length storage shelf 2. You may provide this partition plate 5 from the near side of the extra length accommodation shelf 2 to the back side.
[0037]
Further, as shown in FIG. 6, an optical fiber extra length accommodation apparatus may be configured by providing a partition plate 5 having a depth D less than the depth of the extra length accommodation shelf 2, or as shown in FIG. The partition plate 5 having a height H less than the inner height of the long storage shelf 2 may be provided to constitute an optical fiber extra length storage device.
[0038]
As shown in FIGS. 6 and 7, even when the depth and height of the partition plate 5 are reduced, depending on the length of the extra length portion of the optical fiber ribbon 1 and the extra length portion accommodation form (for example, the optical fiber tape core). When the length of the extra length portion of the wire 1 is not very long, or when the extra length portion of the optical fiber ribbon 1 is accommodated only in the lower part of the front side of the extra length storage shelf 2), the optical fiber The tape core wire 1 can be accurately accommodated in the extra length individual accommodating portion 20 corresponding individually for each predetermined number, and the partition plate 5 is further reduced by the depth and height of the partition plate 5 being reduced. Therefore, the cost of the optical fiber extra length accommodation device can be reduced.
[0039]
Furthermore, in the above-described embodiment, the configuration has one optical fiber extra-length accommodating shelf 2, but the optical fiber extra-length accommodating device of the present invention has two or more optical fiber extra-length accommodating shelves 2. Also good.
[0040]
Furthermore, in the above embodiment, the optical fiber drawn out from the optical fiber cable is drawn out in the form of the optical fiber ribbon 1 and accommodated in the optical fiber extra length accommodation device. The form of the fiber is not particularly limited and is appropriately set. For example, the optical fibers may be drawn out one by one.
[0041]
【The invention's effect】
According to the present invention, the optical fiber surplus length accommodation shelves are partitioned by the plurality of partition plates arranged in the horizontal direction in the vertical orientation with a space therebetween, and the plurality of partitioned regions are formed in an array. Is formed as an extra length portion individual accommodating portion for individually accommodating the extra length portion of the optical fiber drawn from the optical fiber cable for each of one or more predetermined optical fiber groups. Even if there is no empty core box for accommodating the extra length portion of the fiber, the extra length portion of the optical fiber can be individually accommodated for each of one or more predetermined optical fiber groups.
[0042]
Therefore, unlike the case where the extra length portion of the optical fiber is accommodated in the empty core box, the extra length portion of the optical fiber can be accommodated very easily by using the optical fiber extra length accommodation device of the present invention. And the equipment cost can be reduced. Also, in the present invention, by providing an optical coupler unit or the like in each of the extra length portion individual accommodating portions, it becomes possible to separately accommodate the optical coupler unit, and switching of the connection with the optical coupler unit or light at the time of switching the connection is possible. The extra fiber portion can be accommodated with good workability.
[0043]
Further, according to the present invention, a guide rail for guiding a partition plate is provided on at least one of the bottom inner wall and the upper inner wall of each surplus length storage shelf from the front side to the back side of the surplus length storage shelf. since the plate is provided slidably in the guide rail, a partition plate is provided only where needed, when the partition plate is no longer needed, it is possible to remove the partition plate, wastefully disposed partition plate Can be prevented.
[0044]
Furthermore, according to the present invention in which the partition plate is provided from the front side to the back side of the surplus length storage shelf with a depth equal to or greater than the depth of the surplus length storage shelf, the surplus length storage shelf is extended from the near side to the back side. Since it can be partitioned by the partition plate, the optical fiber group accommodated in each extra-length portion individual accommodating portion does not interfere with the optical fiber group accommodated in the other extra-length portion individual accommodating portion, and the optical fiber The individual accommodation of the group can be further ensured.
[0045]
Furthermore, the present invention is provided with a partition plate having a depth less than the depth of the extra length accommodation shelf, and the present invention is provided with a partition plate having a height less than the inner height of each extra length accommodation shelf. Therefore, depending on the length of the extra length portion of the optical fiber and the extra length portion accommodation form, the individual accommodation portion of the optical fiber group can be made accurate, and the partition wall can be divided by the amount that the depth and height of the partition plate are reduced. By reducing the size of the plate, the cost of the optical fiber extra length accommodation device can be reduced.
[Brief description of the drawings]
FIG. 1 is a main part configuration diagram showing an embodiment of an optical fiber extra length accommodation apparatus according to the present invention.
FIG. 2A shows a partition plate arrangement configuration in the above embodiment and another embodiment of the optical fiber extra length accommodation device according to the present invention, as shown in FIG. Ri front view showing by enlarging the inner part, in FIG. 2 (b), Ru reference diagram der partition plate disposed configuration.
FIG. 3 is an explanatory diagram showing the depth configuration of the partition plate of the embodiment example in a state where an optical coupler unit is provided in the optical fiber surplus length accommodation apparatus of the embodiment example.
FIG. 4 is a diagram illustrating an example in which an optical coupler unit 9 is provided in the optical fiber extra length accommodation apparatus of the above embodiment and the cable side optical fiber ribbon 1 is connected to the adapter unit 4 via the optical coupler unit 9; FIG.
FIG. 5 is an explanatory view showing another embodiment of the optical fiber extra length accommodation apparatus according to the present invention.
FIG. 6 is an explanatory view showing still another embodiment of the optical fiber extra length accommodation apparatus according to the present invention.
FIG. 7 is an explanatory view showing still another embodiment of the optical fiber extra length accommodation apparatus according to the present invention.
FIG. 8 is an explanatory view showing an example of a conventional optical fiber surplus length accommodation apparatus.
FIG. 9 shows a connection example (a) of the optical coupler unit 9 and the empty core box 12 when both the optical coupler unit 9 and the empty core box 12 are provided in the conventional optical fiber extra length accommodation apparatus, and the conventional optical fiber; It is explanatory drawing (b) which shows the example of arrangement | positioning of the optical coupler unit 9 and the empty core wire box 12 in a surplus length accommodation apparatus.
FIG. 10 is an explanatory view showing an example of connection of the cable-side optical fiber ribbon 1 to the adapter unit 4 through the optical coupler unit 9 in the conventional optical fiber extra length accommodation apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical fiber tape core wire 2 Extra length accommodation shelf 3 Terminal connector 4 Adapter box 5 Partition plate 6 Optical coupler side connector 7 Guide rail 8 Fitting groove 9 Optical coupler unit 10 Optical switch 13 Coupler side optical fiber tape core wire 20 Extra length Partial individual storage

Claims (4)

上部壁と底部壁と横方向の端部の壁を有して手前側の端面が開口されている箱状の光ファイバ余長収容棚を１つ以上有し、該光ファイバ余長収容棚の箱状の内部空間がそれぞれ間隔を介して縦向き姿勢で横方向に配列された複数の仕切り板により仕切られ、それぞれの光ファイバ余長収容棚に前記仕切り板により区分されて手前側が開口状態の空間部から成る複数の区分領域が配列形成されており、該それぞれの区分領域が光ファイバケーブルから引き出された光ファイバの余長部分を予め定めた１本以上の光ファイバ群ごとに個別に前記区分領域の前記手前側の開口から挿入して該区分領域の空間に非拘束状態で収容する余長部分個別収容部と成しており、前記それぞれの余長収容棚の底部内壁と上部内壁の少なくとも一方には仕切り板をガイドするガイドレールが前記余長収容棚の手前側から奥側にかけて設けられており、前記仕切り板はガイドレールにスライド自在に設けられていることを特徴とする光ファイバ余長収容装置。 One or more box-shaped optical fiber extra-length storage shelves having an upper wall, a bottom wall, and a lateral end wall and having an open end face on the front side , partitioned by a box-like plurality of partition plates which the interior space is arranged laterally vertical posture via the respective interval is divided Ri by the partition plate to the respective optical fiber excess length accommodating shelf front opening a plurality of segmented regions Ru from the space portion formed in the state are arranged and formed, for each one or more optical fibers group of predetermined extra length portion of the optical fiber drawn each segmented region said from the optical fiber cable Individually formed from an opening on the near side of the divided region and accommodated in an extra length portion individual accommodating portion in an unconstrained state in the space of the divided region, and an inner wall at the bottom of each extra length accommodating shelf; At least one of the upper inner walls has a partition plate Id guide rails are provided toward the back side from the front side of the extra length of the shelves, the partition plate is the optical fiber excess length accommodating apparatus which is characterized in that provided slidably in the guide rail. 仕切り板は余長収容棚の奥行き以上の奥行きを有して余長収容棚の手前側から奥側にかけて設けられていることを特徴とする請求項１記載の光ファイバ余長収容装置。Partition plate according to claim 1 Symbol placement of the optical fiber excess length accommodating device, characterized in that it is provided toward the rear side from the front side of the extra length of the shelves have a depth more than the depth of the extra-length shelf. 余長収容棚の奥行き未満の奥行きを有する仕切り板が設けられていることを特徴とする請求項１記載の光ファイバ余長収容装置。Extra length shelf of claim 1 Symbol placement of the optical fiber excess length accommodating device, characterized in that the partition plate is provided with a depth of less than the depth. それぞれの余長収容棚の内側高さ未満の高さを有する仕切り板が設けられていることを特徴とする請求項１記載の光ファイバ余長収容装置。Each of claim 1 Symbol placement of the optical fiber excess length accommodating device, characterized in that the partition plate is provided with an inner height less than the height of the extra length shelf.
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