JP4162833B2

JP4162833B2 - Extra wire length storage case

Info

Publication number: JP4162833B2
Application number: JP2000144534A
Authority: JP
Inventors: 冨士吉篠田; 一郎田中; 安彦新町; 一佳新見; 正明新福; 貞明高野; 稔村山
Original assignee: Nippon Telegraph and Telephone Corp
Current assignee: Nippon Telegraph and Telephone Corp
Priority date: 2000-05-17
Filing date: 2000-05-17
Publication date: 2008-10-08
Anticipated expiration: 2020-05-17
Also published as: JP2001324621A

Description

【０００１】
【発明の属する技術分野】
本発明は、通信ケーブル、特に光ファイバ心線を有する光ファイバケーブルの接続部を保護し、心線余長を収納する収納トレイからなる心線接続余長収納ケースに関するものである。
【０００２】
【従来の技術】
従来より、光ファイバケーブルの分岐、引込、接続などを行う場合、ケーブル心線相互を接続すると共に、ケーブル心線の余長分を収納するための心線接続余長収納ケースが用いられている。このケースは、収納トレイに心線を導出入する部分となる心線導出入部と、その心線導出入部から導出入させる幹線用光ファイバケーブルから引き出された光ファイバ心線同士或いは分岐用光ファイバケーブルから引き出された心線とを接続するコネクタ等の接続部が収納されるコネクタ収納部と、さらに接続された心線の余長部分を巻回して保護収納する心線余長収納部とを備えたものが知られている。
特に、このような収納トレイを用いた例として、特許文献〔特開２０００−１２１８４０号公報〕に示すように複数枚の収納トレイを重ねて多重状態下で支持体に配備するものが本願の特許出願人によって提案されている。
【０００３】
【発明が解決しようとする課題】
ところが、光ファイバケーブルを用いた通信網ではケーブルの高密度、多心化が進むにつれて心線余長収納部ではその容量が不足しがちになり、多数枚重ねられた収納トレイの多様化で心線余長の納まりが悪くなって、心線の光損失が生じ伝送特性に悪影響を与えたり接続分岐に伴う作業がやりにくいし、さらには増設も簡単に対応できずコンパクト化できないといった問題が生じている。
【０００４】
本発明は、これら従来の事情に鑑みてなされたものであり、光ファイバケーブルの伝送特性に悪影響を与えることなく光ファイバケーブルの接続や切り替え或いは分岐接続作業が容易に実施でき、複数の収納トレイを一括して保持固定でき、配線整理を整然とでき、かつ収納トレイの更新や増設も楽で、きわめてコンパクトに接続部を安定収納することができる取扱い簡便な心線接続余長収納ケースを安価な形態で提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
上述の課題を解決するために、請求項１の発明は、光ファイバ心線を導出入する心線導出入部と、該心線導出入部から入る心線相互を接続したコネクタを収納するコネクタ収納部と、心線余長を巻回して収納する心線余長収納部とを有する収納トレイの複数枚をそれぞれピン軸部と軸受部とからなるヒンジ部によって支持体に回動自在で、かつ着脱自在に並設して心線接続余長収納ケースを構成したものであって、前記収納トレイの心線導出入部のある側板両端にピン軸部を対向突設し、また前記支持体に等間隔で複数並設した軸受部に上方に開口されたガイド溝を形成すると共に、該ガイド溝から前記軸受部に前記ピン軸部を挿着して、各収納トレイを順次折り重ねて多重状態下で前記支持体に配備し、さらに前記収納トレイの両側板に係止爪部と係止受部とを設けて、該収納トレイを複数枚積み重ねたときに、隣接する一方の前記収納トレイにある前記係止爪部が、他方の前記収納トレイにある前記係止受部に順次係合するようにして、各収納トレイを段階状にずらせた多重状態下に前記支持体に傾斜保持するように配備し、この複数枚の前記収納トレイを重ね状態で一括して回動して伏せ、その回動最終段階で各収納トレイ同士が、それぞれの前記係止爪部と前記係止受部との係合によって保持固定できる構成としたことを特徴とする。
【０００６】
請求項２の発明は、請求項１に記載の心線導出入部のある心線接続余長収納ケースにおいて、複数のコネクタ保持用のコネクタ収納部を有し、各コネクタ収納部に保持されたコネクタから導出される心線余長を収納トレイ内に並設された一対の心線余長収納部に分離して巻回させると共に、前記心線導出入部に心線を挿通保持する弾性保持部材を係脱自在に嵌着配備してなることを特徴とする。
【０００７】
請求項３の発明は、請求項１または請求項２に記載の心線接続余長収納ケースにおいて、前記収納トレイの側板の中央に水平状態で仕切壁を設け、該仕切壁の上下両面側にガイドリブによって心線導出入部と、コネクタ収納部と、心線余長収納部とを形成してなることを特徴とする。
【０００８】
【作用】
本発明の心線接続余長収納ケースは、光ファイバ心線の接続余長部分を保護収納する複数の収納トレイが互いに回動自在に連結されていて、各収納トレイを重ね状態で一括して回動して伏せ、その回動最終段階で、各収納トレイ同士がそれぞれの係止爪部と係止受部との係合によって保持固定できる構成としてあるので、任意の収納トレイを引き起して開いて心線の接続作業や接続状況の点検、確認、調整などをきわめて容易に行うことができ、心線余長収納終了後に各収納トレイをワンタッチで一括して伏せて保持することができ、その作業性の向上が図れる。
また、各収納トレイは、光ファイバ心線の導出入部のある側板にヒンジ部があって回動するため、収納トレイの回動による光ファイバ心線の長さ変動が少なく納められ、伝送特性に悪影響を及ぼすことがない。
しかも、心線接続後に上側の収納トレイを回動させて元の位置に戻しても光ファイバ心線に弛みが生じないし、心線に過度に屈曲することがなく曲率半径の小さい円弧状部分をも生じないで収納でき安全な保護ができる。
さらに、収納トレイを複数積み重ねたときに、隣接する一方の収納トレイにある係止爪部が、他方の収納トレイにある係止受部に順次係合して段階状にずらせた多重状態下に前記支持体に傾斜保持するようにしてなることにより、配線整理が整然とでき、しかも心線識別がらくであり、かつ連結した収納トレイを別個に外すこともでき、収納トレイの更新並びに増設が容易にできる。
【０００９】
【発明の実施の形態】
本発明の実施例を図面を用いて説明すると、心線接続余長収納ケース１は複数枚の同形の収納トレイ１０からなり、該収納トレイ１０内に光ファイバ心線ａを導出入する心線導出入部１１と、該心線導出入部１１から入る心線相互を接続したコネクタｂを収納するコネクタ収納部１２と、心線余長を巻回して収納する心線余長収納部１３とを備えると共に、この収納トレイ１０を複数枚を段階状にづらせて多重に積み重ねた状態下で支持体４に傾斜保持するようにしたものである。
【００１０】
そして、前記収納トレイ１０は、合成樹脂により一体成形された成形品であり、図１及び図２に示すように、略長方形状の外形を有し、内面側が同一形状に形成されたもので、前記収納トレイ１０の心線導出入部１１のある側板の両サイドにピン軸部２を対向して突設し、支持体４に設けたピン挿着用の軸受部３，３とを一組としてヒンジ部とし、各収納トレイ１０を重ねた状態において、一方の収納トレイ１０の係止爪部５を他方の収納トレイ１０の係止受部６に嵌挿して両収納トレイ１０を互いに傾斜保持してなるものである。
【００１１】
前記収納トレイ１０としては、図３乃至図６に示すように４心一括収納タイプとしたもので、心線ａの接続用コネクタｂが収納保持されるコネクタ収納部１２と、該コネクタ収納部１２に保持された接続用コネクタｂから導出される心線余長を引き廻し、ループ状に巻回させて保持する心線余長収納部１３とをガイドリブ１２_１，１３_１の仕切壁により区画して備えた略長方形の収納トレイ１０を用いる。
この収納トレイ１０の外壁側面部の両サイドに設けた一対のピン軸部２と、支持体４に設けた一対の軸受部３とからなるヒンジ部によって隣接される収納トレイ１０を互いに支持体４に回動自在、例えば１２０〜１５０度回動でき、かつ着脱自在に連結して上下方向に多段に重ねて配備する。
そして、隣接される各収納トレイ１０の心線導出入部１１のある側板両端にピン軸部２を対向突設し、また前記支持体４に等間隔で複数並設した軸受部３に上方に開口されたガイド溝３_１を形成すると共に、該ガイド溝３ _１から軸受部３に前記ピン軸部２を挿着して各収納トレイ１０を順次折り重ねて多重状態下で前記支持体４に配備し、さらに前記収納トレイ１０の両側板に係止爪部５と係止受部６とを設けて、該収納トレイ１０を複数枚積み重ねたときに、隣接する一方の前記収納トレイ１０にある前記係止爪部５が、他方の前記収納トレイ１０にある係止受部６に順次係合するようにし、各収納トレイ１０を段階状にずらせた多重状態下に前記支持体４に傾斜保持するように配備し、この複数枚の収納トレイ１０を重ね状態で一括して回動して伏せ、その回動最終段階で各収納トレイ同士が、それぞれの前記係止爪部５と前記係止受部６との係合によって保持固定できる構成としてある。
【００１２】
また、前記収納トレイ１０に形成した舌状の係止片１４のある心線導出入部１には、分離スリットのある心線挿通孔を設けた弾性保持部材ｃを圧入嵌合して心線ａの支持を確実にしてあり、この弾性保持部材ｃは心線径或いは心線数に応じた挿通孔のあるものを選んで用いられる。
さらにコネクタ収納部１２及び心線余長収納部１３にはガイドリブ１２_１，１３_１及び側壁を選んで心線の浮きを阻止する心線係止片１５或いは係止爪１６を一体成形して余長の心線ａや心線接続部となるコネクタｂを収納トレイ１０内に確実に保持できるようにしてあって、各収納トレイ１０毎に心線ａを分離整理収納し、ケーブル挿入部からファイバ心線の曲げが極少で心線収納時のねじれをも防止でき、安全かつ高密度収納で高信頼性が得られる。
【００１３】
この場合、多段にずらせて積み重ねられた収納トレイ１０の中から所望の収納トレイ１０の上段側の収納トレイ１０の係止爪部５を係止受部６から外せば、ピン軸部２と軸受部３とからなるヒンジ部を支点として収納トレイ１０が回動でき、重ね合せ面を開くことができて下段側の収納トレイ１０の内面側が露出されて収納心線の接続配線作業が容易にできる。
【００１４】
さらに、一方の収納トレイ１０を他方の収納トレイ１０に連結するときは、ピン軸２を軸受部３のガイド溝３_１に挿入して軽く押し込めば、軸受部３がその押力で弾性変位して、軸孔に容易に嵌込まれて回動自在に連結され、収納トレイ１０を複数積み重ねたときに隣接する一方の収納トレイ１０にある係止受部５が他方の収納トレイ１０にある係止受部６に順次係合して段階状にずらせた多重状態下に前記支持体４に傾斜保持することで固定される。
また取り外しの際には、ピン軸部２を軸受部３のガイド溝３_１から容易にガイド溝３_１に移し替えられ、ピン軸部２が軸受部３から抜き出し簡単に外すことができ、収納トレイ１０内の心線の点検、修理、接続の各作業が簡便に行うことができる。
【００１５】
なお、前記心線導出入部１１は、片側に設けたシングルタイプに限らず両側に対に設け、即ち四隅に設けたダブルタイプのものを用いることもできるし、しかも合成樹脂の射出成形により、収納トレイ１０を略正方形、長方形の四角形または楕円形に形成されるので、コネクタ収納部１２に隣接される心線余長収納部１３には所定間隔に配列されるケーブル押え用の心線係止片１５で伝送特性に悪影響が及ばないように、心線がなめらかに湾曲したループ状に巻回保持できるように配備してある。
【００１６】
前記収納トレイ１０の複数枚を重ね合わせて心線接続余長収納ケース１として、図６に示すようにベース部材２０とカバー部材２１とからなる円筒状のクロージャ２２内に組み込まれて用いられるが、収納トレイ１０を軸支した支持体４が取付部材９を介して設けられる支板８に固定され、前記ベース部材２０の挿通孔１にゴム様弾性材例えば、熱可塑性ゴム組成物からなるケーブルシール２３を嵌入して、該ケーブルシール２３に前記ケーブルＡを液密的に貫通させ、該ケーブルＡに前記ベース部材２０の内面に形成されたケーブル把持金具２４に着脱自在に配備する。
この場合、前記カバー部材２１の外周面に前記ベース部材２０を嵌合してヒンジで開閉自在のバンド２５を嵌着してバックルで締付けてベース部材２０と、カバー部材２１とをパッキン（図示せず）を介して接続連結してある。
【００１７】
このクロージャ２２の例で説明すると、ベース部材２０を介して幹線光ケーブルＡが貫通されてケーブル把持金具２４で固定され、かつ、該ケーブルのテンションメンバが、テンションメンバ把持金具２４_１に接続連結される。前記カバー部材２１は、ベース部材２０に収納トレイ１０を内装状態下で突き合わせ密封結合して連結一体化するようになっている。
【００１８】
なお、収納トレイ１０に設けた係合ノブ７は操作把手として使用し、かつ収納トレイ１０が複数積み重ねられたときに必要に応じ、ハンド或いは支杆（図示せず）などを嵌挿してベース部材２０に連結固定保持するために用いてもよいし、上下段ごとに連結ボスを嵌装して連結する形態とすることもできる。
【００１９】
以上の構成からなる収納トレイ１０において、ケーブルＡから分岐した心線ａは収納トレイ１０のいずれか一方の第１出入口の心線導出入部１１から入ると、ガイドリブ１２_１，１３_１の間の心線通路を通るとともに心線押さえ用の係止片１５により押されて、いずれかの心線余長収納部１２内に入る。心線ａが心線余長収納部１３等内に入るときは、前記ガイドリブ１３_１で形成された出入口を通る。そして、心線ａは前記係止片１５によって押さえられると共に、ガイドリブ１３_１の回りを巻回され、かつコネクタ収納部１２の差込ガイドリブ１２_１に取り付けられたコネクタｂに接続される。このコネクタｂから出る心線ａは、その心線余長収納部１３を通って、他方の第２出入口の心線導出入部１１からケース外部に出る。
なお、前記心線ａを押える前記係止片１５は、２本上下に分けて、例えば１／２或いは２／３，１／３の位置などに振り分けて突設し、心線ａを通する際に上側の係止片１５と、下側の係止片１５とに分けて通過させるようにし、増設時での配線に各心線ａの干渉をなくした安全な配線ができるようにすることが考慮されている。
【００２０】
このように、心線導出入部１１の一方側から心線ａを入れる場合に、心線余長収納部１３に収納したときは、他方の心線導出入部１１側に出すことができる。
なお、心線導出入部１１の一方側から心線ａを入れて心線余長収納部１３に収納する場合、心線ａの巻回の仕方によって、両方の心線導出入部１１のいずれの側にも出すこともできる。
以上のように、いずれかの心線導出入部１１から心線ａを収納トレイ１０内に入れることができ、かつ心線ａの曲率を小さくすることなく（過負荷を加えることなく）、入口側となった心線導出入部１１と同一の又は異なる心線導出入部１１を出口側として出すことができる。これにより、心線の出入口側を自在として、光ケーブル用クロージャ内での心線の配線の便宜を図ることができる。
【００２１】
ここで、心線導出入部１１には、貫通穴が形成されたゴム等の弾性変形可能な弾性保持部材ｃ（図３参照）が設けられ、心線ａは、この貫通穴を通って収納トレイ１０内に入り、かつ収納トレイ１０外に出る。この心線支持用の弾性保持部材ｃは係止片１４により保持される。
このように弾性保持部材ｃを心線導出入部１１に介在させれば、心線ａが心線導出入部１１を通るときに、心線ａがトレイ本体に擦れることが防止でき、引張衝撃等をも確実に防止することができる。
【００２２】
そして、収納トレイ１０は、光ケーブル用クロージャ内に順次積み重ねられるようにして実装される（図６参照）。この積み重ねには、（トレイ本体上面）側が上側となり、係合用の係止爪部５が下側となるようにする。そして、下側の収納トレイ１０の係止受部６に入れれば、重なり合う収納トレイ１０同士をネジ止め等することなく連結することができ、心線接続余長収納ケース１とすることができる。例えば、各収納トレイ１０を起して開いた状態から一端の収納トレイ１０を回動して伏せると、つぎつぎに他の収納トレイ１０も将棋倒しに伏せられて、複数の収納トレイ１０が一括してそれぞれの係止爪部５と係止受部６によって係止保持固定できる。
【００２３】
図７乃至図１０の実施例では、心線接続余長収納ケース１として構成する収納トレイ３０が、表裏両面を心線ａの収納部として使用しうる形態とした例で、トレイ本体の側板３１の中央に水平状態で仕切壁３２を設け、該仕切壁３２の上下両面側にガイドリブによって心線導出入部１１と、コネクタ収納部１２と、心線余長収納部１３とを形成すると共に、ピン軸部２、係止爪部５、係合受部６、ガイドリブ１２_１，１３_１、係止片１４，１５を一体形成する構成は、前例と同様となっていて各分岐心線ａの干渉をなくして、安全に心線余長の収納ができる。
なお、前記心線余長収納部１３などは片面に２つ形成してあるが、１つ或いは２つ以上並設したタイプとすることもできる。
そして、複数並設した場合には、隣接される心線余長収納部１３に連通路をガイドリブ１２ _１，１３ _１で形成して折り返えし巻回でき、心線ａの導出入の自由度を高めることも配慮される。
【００２４】
【発明の効果】
本発明は、請求項１の発明によれば、収納トレイの心線導出入部のある側板両端にピン軸部を対向突設し、また前記支持体に等間隔で複数並列した軸受部に上方に開口したガイド溝を形成すると共に、該ガイド溝から軸受部に前記ピン軸部を挿着して各収納トレイを順次折り重ねて多重状態下で前記支持体に配備し、この複数枚の収納トレイの両側板に係止爪部と係止受部とを設けて、該収納トレイを複数枚積み重ねたときに、隣接する一方の前記収納トレイにある係止爪部が、他方の前記収納トレイにある係止受部に順次係合するようにし、各収納トレイを段階状にずらせた多重状態下に前記支持体に傾斜保持するように配備し、この複数枚の収納トレイを重ね状態で一括して回動して伏せ、その回動最終段階で各収納トレイ同士が、それぞれの前記係止爪部と前記係止受部との係合によって保持固定できる構成としたことで、上下の収納トレイのヒンジ連結の係脱が簡便にできて、簡単に多段に積み重ねることができ、しかも複数枚重ねられた収納トレイは心線導出入部の側板を中心に互いに回動自在に連結されているので、心線接続作業後に任意の収納トレイを開いて収納されている光ファイバ心線を迅速に取り出すことができ、また複数枚の収納トレイを一括して回動して固定保持できるので、作業簡便で著しく良好であり、心線識別も容易で接続部の再調整や修理など簡単に行うことができ、作業性を大幅に向上すると共に、収納トレイを必要なだけ複数に積み重ねてずらすことができると共に、多段に積み重ねられた収納トレイ全体の確認作業の簡易化と、収納トレイ間を的確に保持できて安全性も高められる。
しかも本発明によれば、心線の分岐、引込の際に収納トレイへの心線導出入の自由度があって作業上、心線接続部へのアクセスが簡便化できると共に、収納トレイの配備がコンパクト化でき、管理や組立分解作業も容易に行なえ、かつ高密度・高信頼性が得られる。また、請求項２の発明によれば、心線余長の収納が収まり良くでき心線の巻回収納にも余裕があり、しかも心線の保持も緩衝的に行なわれているので、心線に弛みが生じないし、各収納トレイを回動させ展開しても収納した光ファイバの余長部の長さの変化が少ないので、光ファイバの余長部の長さの変化が少なく、光ファイバ心線に無理な屈曲や小円弧が発生することなく光損失をなくして伝送特性を良好な保つことができる。
さらに、請求項３の発明によれば、必要なだけ多段に積み重ねた収納トレイ同士が外れたりずれたりすることなく、心線余長の収納に干渉が生ずることなく安全に取扱うことができ、しかも簡単確実に結合されて識別容易な心線接続余長収納ケースとしてクロージャ内に保持できるので、心線余長収納での高信頼性が得られるし、収納トレイ相互間をネジ止め等することなく脱着でき取扱いも著しく容易化でき、かつコンパクト化が図れる。
【図面の簡単な説明】
【図１】本発明の一実施例である心線接続余長収納ケースの展開斜視図であって、トレイの一部を開いて内面側を示す図である。
【図２】図１に示す使用状態を示す側面図である。
【図３】図２に示す状態の上方から見た平面図である。
【図４】図３に示す心線接続余長収納ケースを支持体と分離した状態図であって、（ａ）は平面図、（ｂ）は収納トレイの底面図である。
【図５】図４の例の各部分を拡大して示し、（ａ）はＡ−Ａ線における拡大縦断面図、（ｂ）はＢ−Ｂ線における部分拡大縦断面図、（ｃ）は収納トレイの全体の側面図である。
【図６】図１乃至図５の例の心線接続余長収納ケースをクロージャに組み込んだ一使用状態の縦断面図である。
【図７】本発明の他の実施例を示し、４心分離収納の心線接続余長収納ケースの平面図である。
【図８】図７の例の底面図である。
【図９】図７のＣ−Ｃ線における拡大縦断面図である。
【図１０】図７の例の正面図である。
【符号の説明】
Ａ光ケーブル
ａ心線
ｂコネクタ
ｃ弾性保持部材
１心線接続余長収納ケース
２ピン軸部
３軸受部
４支持体
５係止爪部
６係止受部
７係合ノブ
８支板
９取付部材
１０収納トレイ
１１心線導出入部
１２コネクタ収納部
１２_１，１３_１ガイドリブ
１３心線余長収納部
１４係止片
１５係止片
１６係止爪
２０ベース部材
２１カバー部材
２３ケーブルシール
２４ケーブル把持金具
２４_１テンションメンバ把持金具
２５バンド
３０収納トレイ
３１側板
３２仕切壁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cord connection extra length storage case that includes a storage tray that protects a connection portion of a communication cable, particularly an optical fiber cable having an optical fiber cord, and stores the extra length of the core cord.
[0002]
[Prior art]
Conventionally, when branching, drawing in, or connecting an optical fiber cable, a cable connection extra length storage case is used to connect the cable cores to each other and store the extra length of the cable cores. . In this case, a core wire lead-in / out portion which is a portion for leading / leaving a core wire to / from the storage tray, and optical fiber core wires drawn from a core optical fiber cable led out from the core wire lead-in / out portion or a branching optical fiber A connector housing for storing a connector for connecting a core wire drawn from the cable, and a cord extra length housing portion for winding and protecting the extra length of the connected core wire. What you have is known.
In particular, as an example using such a storage tray, as disclosed in Japanese Patent Application Laid-Open No. 2000-121840, a plurality of storage trays are stacked and arranged on a support in a multiplexed state. Proposed by the applicant.
[0003]
[Problems to be solved by the invention]
However, in a communication network using optical fiber cables, the capacity of the extra cable length storage section tends to be insufficient as the cable density increases and the number of cores increases. There is a problem that the extra length of the wire becomes poor, the optical loss of the core wire is adversely affected, the transmission characteristics are adversely affected, the work associated with the connection branching is difficult to perform, and the expansion cannot be easily handled and the size cannot be reduced. ing.
[0004]
The present invention has been made in view of these conventional circumstances, and can easily connect, switch or branch the optical fiber cable without adversely affecting the transmission characteristics of the optical fiber cable. Can be held and fixed in a lump, wiring can be organized, storage trays can be renewed and expanded easily , and the storage area can be stored in a very compact and easy way. It is intended to be provided in the form.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is directed to a connector housing portion for housing a core wire lead-in / out portion that leads out an optical fiber core wire and a connector that connects the core wires entering from the core wire lead-out portion. And a plurality of storage trays having a core wire extra length storage section for winding and storing the extra length of the core wire, and can be freely attached to and detached from the support body by a hinge portion including a pin shaft portion and a bearing portion. be those that constitute the freely arranged to core wire connecting excess length storage case, said pin shank side plates at both ends with a storage tray of core-guiding join the club faces projecting, or the the support equal A guide groove opened upward is formed in a plurality of bearing portions arranged side by side at intervals, and the pin shaft portion is inserted into the bearing portion from the guide groove , and the storage trays are sequentially folded to be in a multiplexed state. in deployed on the support, further engaging the both side plates of the storage tray When a plurality of storage trays are stacked by providing a claw portion and a locking receiving portion, the locking claw portion in one of the adjacent storage trays is the locking receiving in the other storage tray. The storage trays are arranged so as to be inclined and held on the support in a multiplex state where the storage trays are shifted stepwise, and the plurality of storage trays are collectively rotated in a stacked state. prone to movement, the storage tray together with the rotation final stage, characterized by being configured to be held and fixed by the engagement between each of the locking claw portion and the lock receiving portion.
[0006]
According to a second aspect of the present invention, there is provided a cord connection surplus length storage case having a core wire lead-in / insertion portion according to claim 1, wherein the connector has a plurality of connector holding connector holding portions and is held in each connector holding portion. An elastic holding member that separates and winds the extra length of the core wire led out from the core wire extra length storage portion arranged in parallel in the storage tray, and inserts and holds the core wire in the core wire lead-in portion It is characterized by being fitted and deployed so as to be freely disengaged.
[0007]
According to a third aspect of the present invention, in the cord connection surplus length storage case according to the first or second aspect, a partition wall is provided in a horizontal state at the center of the side plate of the storage tray, and is provided on both upper and lower sides of the partition wall. A core wire lead-in / out part, a connector storage part, and a core wire extra length storage part are formed by guide ribs.
[0008]
[Action]
According to the present invention, there is provided a storage case for connecting the extra length of the optical fiber, wherein a plurality of storage trays that protect and store the extra length of the optical fiber are connected to each other in a rotatable manner. Since the storage trays can be held and fixed by the engagement of the respective locking claws and the locking receiving portions at the final stage of rotation, the storage trays can be lifted up. It is very easy to connect, check, check and adjust the connection status of the cores, and after storing the extra length of the cores, the storage trays can be held together in one touch. The workability can be improved.
In addition, each storage tray is pivoted with a hinge on the side plate where the optical fiber core lead-in / out section is located, so that the length variation of the optical fiber core due to the rotation of the storage tray can be reduced and transmission characteristics can be reduced. There is no adverse effect.
In addition, even if the upper storage tray is rotated to return to the original position after the core wire is connected, the optical fiber core wire does not become slack, and an arc-shaped portion having a small curvature radius without excessive bending to the core wire. It can be stored without causing any damage and safe protection can be achieved.
Furthermore, when a plurality of storage trays are stacked, the locking claw portions on one adjacent storage tray are sequentially engaged with the locking receiving portions on the other storage tray and shifted in stages. By holding the support in an inclined manner, the wiring can be arranged neatly, the core wires can be easily identified, and the connected storage trays can be removed separately, so that the storage trays can be easily renewed and expanded. Can be.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. A cord connection surplus length storage case 1 is composed of a plurality of storage trays 10 having the same shape, and a core wire through which an optical fiber core wire a is led into and out of the storage tray 10. A lead-in / out part 11, a connector storage part 12 that stores a connector b connecting the cores that enter from the core lead-out / insertion part 11, and a core wire extra-length storage part 13 that winds and stores the extra core wire length. At the same time, the storage tray 10 is tilted and held on the support 4 in a state where a plurality of storage trays 10 are stacked in a stepwise manner .
[0010]
The storage tray 10 is a molded product integrally formed of synthetic resin, as shown in FIGS. 1 and 2, has a substantially rectangular outer shape, and the inner surface side is formed in the same shape, A pin shaft portion 2 is provided to project on both sides of a side plate having the core wire lead-in / out portion 11 of the storage tray 10 and is hinged with a pair of bearing portions 3 and 3 for pin insertion provided on the support 4. In the state where the storage trays 10 are stacked, the latching claw portions 5 of one storage tray 10 are fitted into the latch receiving portions 6 of the other storage tray 10 to hold the two storage trays 10 at an inclination. It will be.
[0011]
As shown in FIGS. 3 to 6, the storage tray 10 is a 4-core batch storage type, and includes a connector storage portion 12 that stores and holds the connector b for the core wire a, and the connector storage portion 12. pull the cord extra length derived from the retained connector b to turn, more partitioning the core wire excess length accommodating portion 13 for holding by winding looped guide rib 12 _1, 13 ₁ of the partition wall A substantially rectangular storage tray 10 is used.
The storage trays 10 adjacent to each other by a hinge portion including a pair of pin shaft portions 2 provided on both sides of the side surface portion of the outer wall of the storage tray 10 and a pair of bearing portions 3 provided on the support body 4 are supported by the support body 4. It can be rotated freely, for example, 120 to 150 degrees, and can be detachably connected and stacked in multiple stages in the vertical direction.
Then, the upper bearing portion 3 a pin shank 2 side plates at both ends with a core-guiding join the club 11 of the storage tray 10 facing projecting, a plurality arranged at equal intervals on the support member 4 was or is adjacent to form the apertured guide grooves 3 _1, the support 4 under multiple state sequentially folded each storage tray 10 by inserting the pin shaft portion 2 from the guide groove 3 ₁ to the bearing part 3 Further , when the latching claw portions 5 and the latch receiving portions 6 are provided on both side plates of the storage tray 10 and a plurality of the storage trays 10 are stacked, the storage tray 10 is in the adjacent one of the storage trays 10. The locking claws 5 are sequentially engaged with the locking receiving portions 6 in the other storage tray 10, and each storage tray 10 is tilted and held on the support body 4 in a multiplex state in which the storage trays 10 are shifted stepwise. deployed to, collectively in a state overlapping the plurality of storage trays 10 Prone rotates, the storage tray together with the rotation final stage, is a structure capable of holding and fixing by the engagement between each of the locking claw portion 5 and the lock receiving portion 6.
[0012]
In addition, an elastic holding member c provided with a core wire insertion hole with a separation slit is press-fitted into the core wire lead-in / insertion portion 1 having the tongue-like locking piece 14 formed in the storage tray 10 and the core wire a The elastic holding member c is selected and used with an insertion hole corresponding to the core wire diameter or the number of core wires.
Guide ribs 12 and more connector housing section 12 and the core wire excess length accommodating portion 13 _1, 13 ₁ and integrally molded core locking pieces 15 or the hook 16 prevents the floating of the core wire to choose sidewall extra The long core wire a and the connector b serving as the core wire connection portion can be securely held in the storage tray 10, and the core wire a is separated and arranged for each storage tray 10, and the fiber is inserted from the cable insertion portion. The bending of the core wire is minimal, and twisting when the core wire is stored can be prevented, and high reliability can be obtained with safe and high density storage.
[0013]
In this case, by removing the locking claw portion 5 of the upper side storage tray 10 of the desired storage tray 10 from the accommodating trays 10 stacked to be shifted in multiple stages from the lock receiving portion 6, the pin shaft portion 2 and the bearing The storage tray 10 can be rotated with the hinge portion formed of the portion 3 as a fulcrum, the overlapping surface can be opened, the inner surface side of the lower storage tray 10 is exposed, and the connection wiring work of the storage core can be facilitated .
[0014]
Moreover, when connecting the one storage tray 10 on the other storage tray 10, if pushed lightly by inserting the pin shaft 2 with the guide groove 3 ₁ of the bearing portion 3, and the elastic displacement bearing part 3 is in its pushing force The latch receiving portion 5 in one storage tray 10 adjacent to the other storage tray 10 when the plurality of storage trays 10 are stacked is easily inserted into the shaft hole and rotatably connected. The support 4 is fixed by being tilted and held in a multiple state where the stoppers 6 are sequentially engaged and shifted stepwise.
Also during removal is being transferred to the pin shaft portion 2 to the guide groove 3 ₁ easily guide grooves 3 ₁ from the bearing portion 3, the pin shaft portion 2 can be removed easily withdrawn from the bearing unit 3, storage The inspection, repair, and connection of the core wire in the tray 10 can be easily performed.
[0015]
The core wire lead-in / out section 11 is not limited to a single type provided on one side, but may be provided in pairs on both sides, that is, a double type provided at four corners, and may be stored by injection molding of synthetic resin. Since the tray 10 is formed in a substantially square, rectangular quadrangle, or oval shape, the core wire locking pieces for cable pressers arranged at predetermined intervals in the core wire extra length storage portion 13 adjacent to the connector storage portion 12. No. 15 is arranged so that the core can be wound and held in a smoothly curved loop so that the transmission characteristics are not adversely affected.
[0016]
As shown in FIG. 6, a plurality of the storage trays 10 are overlapped to form a cord connection extra length storage case 1 that is incorporated into a cylindrical closure 22 composed of a base member 20 and a cover member 21. The support 4 supporting the storage tray 10 is fixed to a support plate 8 provided via an attachment member 9, and a cable made of a rubber-like elastic material such as a thermoplastic rubber composition is inserted into the insertion hole 1 of the base member 20. A seal 23 is inserted, the cable A is passed through the cable seal 23 in a liquid-tight manner, and the cable A is detachably disposed on a cable gripping bracket 24 formed on the inner surface of the base member 20.
In this case, the base member 20 is fitted to the outer peripheral surface of the cover member 21, the openable / closable band 25 is fitted and tightened with a buckle, and the base member 20 and the cover member 21 are packed (not shown). )).
[0017]
Referring to the example of the closure 22 is penetrated trunk optical cable A through the base member 20 is secured with the cable clamping hardware 24, and a tension member of the cable is connected connected to the tension member end fittings 24 ₁ . The cover member 21 is configured to connect and integrate the storage tray 10 to the base member 20 in an interior state by abutting and sealingly coupling.
[0018]
The engagement knob 7 provided on the storage tray 10 is used as an operation handle, and when a plurality of storage trays 10 are stacked, a hand or a support (not shown) or the like is inserted into the base member as necessary. 20 may be used for connecting and fixing to 20 or may be configured such that a connecting boss is fitted and connected to each upper and lower stages.
[0019]
The storage tray 10 having the above configuration, when the core wire a branching from the cable A enters the first entrance of core-guiding join the club 11 one of the storage tray 10, between the guide ribs 12 _1, 13 ₁ Heart The wire passes through the wire passage and is pushed by the locking piece 15 for holding the core wire, and enters any one of the extra wire length storage portions 12. When the core wire a to enter the core wire surplus length housing 13 Hitoshinai passes through a doorway formed in the guide rib 13 _1. The core wire a is with is pressed by the locking pieces 15, wound guide ribs 13 ₁ around and connected to the mounted connector b in the insertion guide ribs 12 _first connector housing portion 12. The core wire a exiting from the connector b passes through the core wire surplus storage portion 13 and exits from the core wire lead-in / out portion 11 of the other second entrance to the outside of the case.
The locking piece 15 for pressing the core wire a is divided into two upper and lower parts, for example, divided into positions of 1/2, 2/3, 1/3, etc., and protrudes and passes through the core wire a. At this time, the upper locking piece 15 and the lower locking piece 15 are divided and passed so that the wiring at the time of expansion can be safely wired without interference of each core wire a. Has been taken into account.
[0020]
As described above, when the core wire a is inserted from one side of the core wire lead-in / insertion portion 11, when it is stored in the core wire extra length storage portion 13, it can be put out to the other core wire lead-in / out portion 11 side.
In addition, when inserting the core wire a from one side of the core wire lead-in / insertion portion 11 and storing it in the core wire extra-length storage portion 13, depending on how the core wire a is wound, either side of both the core wire lead-in / out portions 11 Can also be put out.
As described above, the core wire a can be put into the storage tray 10 from any one of the core wire lead-in / out portions 11, and the entrance side can be obtained without reducing the curvature of the core wire a (without overloading). The core wire lead-in / out part 11 that is the same as or different from the core wire lead-in / out part 11 can be provided as the outlet side. Thereby, the entrance / exit side of a core wire can be made flexible and the wiring of the core wire in the optical cable closure can be facilitated.
[0021]
Here, the core wire lead-in / out part 11 is provided with an elastically deformable elastic holding member c (see FIG. 3 ) such as rubber having a through hole formed therein, and the core wire a passes through the through hole and the storage tray. 10 enters and exits the storage tray 10. The core wire supporting elastic holding member c is held by the locking piece 14.
If the elastic holding member c is interposed in the core wire lead-in / insertion portion 11 as described above, the core wire a can be prevented from rubbing against the tray body when the core wire a passes through the core wire lead-in / insertion portion 11, and a tensile impact or the like can be generated. Can be reliably prevented.
[0022]
The storage tray 10 is mounted so as to be sequentially stacked in the optical cable closure (see FIG. 6). In this stacking, the (tray body upper surface) side is on the upper side, and the engaging claw portion 5 for engagement is on the lower side. And if it puts in the latching receiving part 6 of the lower storage tray 10, the overlapping storage trays 10 can be connected without screwing etc., and it can be set as the cord connection extra length storage case 1. FIG. For example, when the storage tray 10 at one end is rotated and lowered from the state where each storage tray 10 is raised and opened, the other storage trays 10 are then also laid down by shogi and the plurality of storage trays 10 are collectively brought together. Each latching claw portion 5 and latch receiving portion 6 can be latched, held and fixed.
[0023]
In the embodiment of FIGS. 7 to 10, the storage tray 30 configured as the core wire connection surplus length storage case 1 is an example in which both the front and back surfaces can be used as the storage portion for the core wire a. A partition wall 32 is provided in a horizontal state at the center of the core, and a core wire lead-in / out portion 11, a connector storage portion 12, and a core wire extra length storage portion 13 are formed by guide ribs on both upper and lower surfaces of the partition wall 32, and a pin The configuration in which the shaft portion 2, the locking claw portion 5, the engagement receiving portion 6, the guide ribs 12 ₁ and 13 ₁ and the locking pieces 14 and 15 are integrally formed is the same as in the previous example, and the interference of each branch core a It is possible to safely store the extra length of the core.
In addition, although the said core wire extra length accommodating part 13 etc. are formed in one side, it can also be set as the type which arranged one or two or more in parallel.
When it is more juxtaposed guide ribs 12 1 the communication path to the core wire excess length accommodating portion 13 which is _adjacent, 13 formed in _one can Kaee and winding folding, the derivation of the core wire a free It is also considered to increase the degree.
[0024]
【The invention's effect】
According to the first aspect of the present invention, the pin shaft portions are provided so as to be opposed to each other at both ends of the side plate of the storage tray having the lead-in / out portions of the storage tray, and a plurality of bearing portions arranged in parallel at equal intervals above the support body. thereby forming an open guide groove, the guide groove from sequentially folded by inserting the pin shaft portion into the bearing portion of each storage tray is deployed to the support under multistate, the plurality storage tray When the plurality of storage trays are stacked, the locking claw portions on one of the adjacent storage trays are attached to the other storage tray. The storage trays are arranged so as to be engaged with each other in a sequential manner, and the storage trays are tilted and held on the support in a multiplex state where the storage trays are shifted stepwise. And turn it down, and at the final stage of rotation, the storage trays By the above locking claw portion of the record and the holding fixture can be constructed by the engagement between the lock receiving portion, can be stacked to be conveniently have hinged the detachment of the upper and lower storage tray, easily multistage In addition, since the stacked storage trays are connected to each other so as to be rotatable around the side plate of the core wire lead-in / out section, the optical fiber core wires are stored by opening any storage tray after the core wire connection work. Can be quickly removed, and multiple storage trays can be rotated and fixed at once, making it easy to work and remarkably good. The workability can be greatly improved, the storage trays can be stacked as many as necessary, and the storage trays can be shifted and stacked, and the confirmation of the entire storage trays stacked in multiple stages can be simplified. Is also enhanced safety can better retain.
In addition , according to the present invention, there is a degree of freedom of lead-in / out of the core wire to the storage tray when the core wire is branched and retracted, and the access to the core wire connection portion can be simplified in work, and the storage tray can be provided. Can be made compact, and management and assembly / disassembly operations can be easily performed, and high density and high reliability can be obtained. Further, according to the invention of claim 2, since the extra length of the core wire can be accommodated and the core wire can be wound and stored, and the core wire is held in a buffering manner. Since there is little change in the length of the extra length of the stored optical fiber even if each storage tray is rotated and unfolded, there is little change in the length of the extra length of the optical fiber. It is possible to maintain good transmission characteristics by eliminating optical loss without causing excessive bending or small arcs in the core.
Furthermore, according to the invention of claim 3, it is possible to safely handle the storage trays stacked in multiple stages as much as necessary without detaching or shifting, without causing interference in the storage of the extra length of the core wire, Since it can be held in the closure as an easy-to-identify cord connection extra-length storage case that is easily and securely connected, high reliability can be obtained when extra cord length is stored, and there is no need to screw between storage trays. Detachable and easy to handle, and compact.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a cord connection surplus length storage case according to an embodiment of the present invention, showing a part of a tray opened to show an inner surface side.
FIG. 2 is a side view showing a use state shown in FIG.
3 is a plan view seen from above in the state shown in FIG. 2. FIG.
FIGS. 4A and 4B are diagrams illustrating a state where the cord connection extra length storage case shown in FIG. 3 is separated from the support body, wherein FIG. 4A is a plan view and FIG.
5 is an enlarged view of each part of the example of FIG. 4, wherein (a) is an enlarged vertical sectional view taken along line AA, (b) is a partially enlarged longitudinal sectional view taken along line BB, and (c) is shown. It is a side view of the whole storage tray.
6 is a longitudinal cross-sectional view of one use state in which the cord connection excess length storage case of the example of FIGS. 1 to 5 is incorporated in a closure. FIG.
FIG. 7 shows another embodiment of the present invention and is a plan view of a four-fiber separate storage core wire connection extra length storage case.
FIG. 8 is a bottom view of the example of FIG.
9 is an enlarged longitudinal sectional view taken along line CC in FIG.
10 is a front view of the example of FIG.
[Explanation of symbols]
A optical cable a core wire b connector c elastic holding member 1 core wire connection extra length storage case 2 pin shaft portion 3 bearing portion 4 support body 5 locking claw portion 6 locking receiving portion 7 engaging knob 8 support plate 9 mounting member 10 Storage tray 11 Core wire lead-in / out part 12 Connector storage part 12 ₁ , 13 ₁ Guide rib 13 Core wire extra length storage part 14 Locking piece 15 Locking piece 16 Locking claw 20 Base member 21 Cover member 23 Cable seal 24 Cable gripping metal fitting 24 ₁ Tension member gripping bracket 25 Band 30 Storage tray 31 Side plate 32 Partition wall

Claims

A core-guiding join the club 11 to guide and out the optical fiber a, a connector housing section 12 for housing the connector b of connecting the core wire cross entering from core wire derivation join the club 11, by winding the cord excess length storage A plurality of storage trays 10 each having a cord extra length storage portion 13 are rotatably arranged on a support body 4 in parallel with a hinge portion including a pin shaft portion 2 and a bearing portion 3 in a detachable manner. It is those that constitute the core wire connection excess length storage case 1, the said pin shank 2 side plates at both ends with a core-guiding join the club 11 of the storage tray 10 facing projecting, or the the support 4 etc. thereby forming a plurality juxtaposed the bearing part 3 the guide groove 3 ₁ which is open upward in an interval, each storage tray 10 by inserting the pin shaft portion 2 from the guide groove 3 ₁ to the bearing part 3 deployed to the support 4 under multiple state sequentially folded, further wherein When the latching claw portions 5 and the latch receiving portions 6 are provided on both side plates of the storage tray 10 and a plurality of the storage trays 10 are stacked, the locking claw portions 5 in one adjacent storage tray 10 are provided. However, each storage tray 10 is disposed so as to be inclined and held on the support body in a multiplex state in which the storage trays 10 are shifted stepwise so as to be sequentially engaged with the locking receiving portions 6 in the other storage tray 10. prone rotates collectively in a state stacked plurality the storage tray 10, engagement of the storage tray together with the rotation final stage, and each of the locking claw portion 5 and the lock receiving portion 6 A cord connection surplus length storage case characterized in that it can be held and fixed together.

In claim 1 the core wire connection excess length storage case 1 with a core-guiding join the club 11 according to have a connector housing section 12 for a plurality of connector holding, derived from the connector b held in the connector housing section 12 An elastic holding member that separates and winds the extra length of the core wire to be paired in a pair of extra core length storage portions 13 arranged in the storage tray 10 and inserts and holds the core wire in the core wire lead-in / out portion 11 A cord-wire surplus length storage case, wherein c is detachably fitted and deployed.

In cord connections excess length storage case 1 according to claim 1 or claim 2, the partition wall 32 in a horizontal state arranged in the center of the side plate 31 of the storage tray 30, the guide ribs 12 on the upper and lower surfaces sides of the partition Setsukabe 32 ₁ and 13 ₁ , a core wire connection extra length storage case formed by forming a core wire lead-in / insertion portion 11, a connector storage portion 12, and a core wire extra length storage portion 13 .