JP4544832B2 - Optical fiber connection tool - Google Patents

Optical fiber connection tool Download PDF

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Publication number
JP4544832B2
JP4544832B2 JP2003127134A JP2003127134A JP4544832B2 JP 4544832 B2 JP4544832 B2 JP 4544832B2 JP 2003127134 A JP2003127134 A JP 2003127134A JP 2003127134 A JP2003127134 A JP 2003127134A JP 4544832 B2 JP4544832 B2 JP 4544832B2
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Prior art keywords
optical fiber
base
holding member
holding
tool
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JP2003127134A
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JP2004333686A (en
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孝哉 山内
明彦 矢崎
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3M Innovative Properties Co
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3M Innovative Properties Co
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Description

【0001】
【発明の属する技術分野】
本発明は、一対の光ファイバの素線同士を先端突き合わせ状態で接続可能な光ファイバ接続装置を用いて、ファイバ接続作業を実施するための光ファイバ接続用工具に関する。
【0002】
【従来の技術】
光ファイバの接続技術において、被覆を除去した光ファイバの素線同士を、それぞれの先端面を互いに同軸に突き合わせた状態で、融着や接着を行なわずに恒久的に接続できる光ファイバ接続装置が、「メカニカルスプライス」の呼称で知られている(例えば特許文献1参照)。この種の光ファイバ接続装置は、一般に、光ファイバ素線を受容挟持する対向挟持面を有した素線固定部材を備え、その対向挟持面の少なくとも一方に、光ファイバ素線を予め定めた位置に収容する直線状のガイド溝(例えば断面V字状のV溝)が形成されている。接続作業に際しては、素線固定部材のガイド溝内で一対の光ファイバ素線を先端突き合わせ位置に配置し、その状態で、素線固定部材に外部から押圧力を加えることにより、両光ファイバ素線を対向挟持面に圧力下で固定的に挟持してガイド溝内で同軸に相互接続することができる。
【特許文献1】
特許第2713309号公報
【0003】
上記した光ファイバ接続装置は、素線固定部材に1本のガイド溝を形成した単心接続用のものと、素線固定部材に複数のガイド溝を形成した多心接続用のものとがあるが、いずれの構成でも、接続対象の光ファイバ素線を損傷することなく、それら素線をガイド溝内で正確に位置決めして、先端突き合わせ状態を安定的に維持しながら相互接続することが要求される。そこで従来、このようなファイバ接続作業を、熟練を要することなく迅速に実施できるようにするために、各種光ファイバ接続装置のそれぞれに専用の接続用工具が提供されている(例えば特許文献2参照)。
【特許文献2】
特開平9−61654号公報
【0004】
特許文献2に開示される接続用工具は、基部と、基部上に設置され、光ファイバ接続装置を支持する装置支持部と、装置支持部から離間して基部上に設置され、接続対象の一方の光ファイバを仮保持するファイバ保持部とを備えて構成される。ファイバ保持部は、鋼製支持枠内に固定的に設置された弾性部材(スポンジ)を備え、この弾性部材に、表面のV溝及びV溝に連通する切れ目が形成されている。なお、このような切れ目付き弾性部材を用いたファイバ保持部を有する光ファイバ接続用工具は、本願出願人による先願である特願2002−240836号明細書にも記載されている。
【0005】
特許文献2の光ファイバ接続用工具による接続作業は、以下のようにして行なわれる。まず、素線固定部材の対向挟持面を開放した状態で装置支持部に搭載した光ファイバ接続装置に対し、第1の光ファイバの素線をガイド溝に挿入してその被覆部分を接続装置本体に固定し、次に、第2の光ファイバの素線を同じガイド溝に挿入するとともに、その被覆部分をファイバ保持部の弾性部材の切れ目に押し込んで仮保持させる。このとき、ファイバ保持部と光ファイバ接続装置との間に延びる第2の光ファイバに撓みが生じるようにして、第2の光ファイバをファイバ保持部に仮保持させると、光ファイバ接続装置のガイド溝内で両光ファイバの素線同士が先端突き合わせ状態に置かれ、しかも第2の光ファイバの弾性復元力に起因する適当な押圧力で先端突き合わせ状態が維持される。そこで、第2の光ファイバの被覆部分を接続装置本体に固定し、さらに素線固定部材の対向挟持面を閉鎖すれば、両光ファイバの素線同士がガイド溝内で適当な突き合わせ力の下に正確に同軸接続される。
【0006】
ところで、上記したようなファイバ接続作業は、光ネットワークの構築に際して光ファイバ敷設現場での作業となることがしばしばである。そのような現場作業では、光ファイバ接続用工具を安定的に載置できる場所(すなわち平坦面)を確保することが困難な場合があり、その場合、上記した接続作業の確実性及び再現性が損なわれることが危惧される。そこで、適当な工具載置平面が無いような現場での使用を考慮して、光ファイバ接続用工具をケーブル等の架設部材に吊り下げた状態で接続作業を遂行できるように、基部に吊下用フックを取り付けた構成も提案されている(例えば特許文献3参照)。
【特許文献3】
特開平9−197159号公報
【0007】
【発明が解決しようとする課題】
前述した特許文献2に開示される光ファイバ接続用工具では、光ファイバをファイバ保持部の弾性部材の切れ目に押し込んで仮保持させる際に、作業者がそれぞれの手で光ファイバの被覆部分の適当に離間した2箇所を掴んで、それら掴み箇所の間のファイバ領域に張力を加えながら光ファイバを切れ目に押し込む操作が必要となる。このようなファイバ押込操作は、光ファイバに必要以上の張力を加えないように、注意を要するものである。また、作業者の両手操作中に、光ファイバ接続装置のガイド溝内にある当該光ファイバの素線の位置がずれ、結果として所望の突き合わせ力を得られなくなったり、素線がガイド溝から脱落したりすることが懸念されるので、やはりファイバ押込操作に細心の注意と熟練が要求される。
【0008】
また、このような両手操作を実現するためには、光ファイバ接続用工具を安定的に載置できる場所が必要となるが、前述したように光ファイバ敷設現場では適当な工具載置平面を確保できないことがあり、その場合には別途、作業台や支持具を用意する必要がある。さらに、作業台や支持具の使用も困難な状況では、光ファイバ接続用工具を一方の手で持ち、他方の手のみで光ファイバを弾性部材の切れ目に押し込むことになるが、こうした不自然な操作により光ファイバを損傷する危惧が生じる。
【0009】
他方、前述した特許文献3に開示される光ファイバ接続用工具は、上記したような現場での接続作業に対応できるように吊下用フックを基部に取り付けているが、このフックは基部から外方へ長く突出するものであるため、吊り下げ以外の通常の平置き作業における工具占有面積が大きくなり、却って取り扱いを困難にする懸念がある。また、突出したフックを周辺の物体や衣服等に引掛ける危険性があり、特に架空光ケーブルに対する高所作業時には細心の注意を要するので、工具の携帯自体が作業者の負担となることが危惧される。
【0010】
本発明の目的は、光ファイバ接続装置を用いてファイバ接続作業を実施するための光ファイバ接続用工具において、熟練を要することなく正確で作業性に優れたファイバ接続作業を安定して実施でき、しかも敷設現場における工具手持状態での接続作業を容易に実現できる光ファイバ接続用工具を提供することにある。
【0011】
本発明の他の目的は、光ファイバ接続装置を用いてファイバ接続作業を実施するための光ファイバ接続用工具において、無用な張出部分を極力排除して携帯性を向上させる一方、工具載置平面の確保が困難な現場でも適当な場所に取り付けて使用できる光ファイバ接続用工具を提供することにある。
【0012】
【課題を解決するための手段】
上記目的を達成するために、請求項1に記載の発明は、基部と、基部上に配置され、一対の光ファイバの素線同士を先端突き合わせ状態で接続可能な光ファイバ接続装置を支持する装置支持部と、装置支持部から離間して基部上に配置され、接続対象の光ファイバのそれぞれを個別に仮保持する複数のファイバ保持部とを具備する光ファイバ接続用工具において、複数のファイバ保持部の各々は、光ファイバを受容する開閉可能な受容溝を有する保持部材であって、光ファイバに長手方向張力を実質的に加えることなく光ファイバを受容溝へ挿入できるようにする開位置と、受容溝に挿入された光ファイバを挟持する閉位置との間で変位動作可能な保持部材と、保持部材に連結され、保持部材を開位置と閉位置との間で変位動作させるための手動操作部材とを具備し、手動操作部材は、手動操作されない初期状態で基部の表面から平行に離隔して配置される操作要素を備えて、基部に片持ち梁式に固定され、操作要素を初期状態から基部に接近する方向へ手動操作することにより、保持部材が閉位置から開位置へ変位動作すること、を特徴とする光ファイバ接続用工具を提供する。
【0013】
請求項2に記載の発明は、請求項1に記載の光ファイバ接続用工具において、手動操作部材は、保持部材を担持する弾性変形可能な担持要素と、担持要素に一体的に連結され、手動操作力を担持要素に伝達して担持要素を弾性変形させる操作要素とを備え、操作要素を基部に接近する方向へ手動操作したときに、担持要素の弾性変形に伴い保持部材が開位置へ変位動作し、担持要素の弾性復元に伴い保持部材が閉位置へ変位動作する光ファイバ接続用工具を提供する。
【0014】
請求項3に記載の発明は、請求項2に記載の光ファイバ接続用工具において、手動操作部材が、基部に一体成形される光ファイバ接続用工具を提供する。
【0015】
請求項4に記載の発明は、請求項1〜3のいずれか1項に記載の光ファイバ接続用工具において、保持部材は、互いに一体に連結される一対の腕部分を有し、開位置と閉位置との間で変位動作する間に、一対の腕部分の連結部位で弾性変形して受容溝を開閉する光ファイバ接続用工具を提供する。
【0016】
請求項5に記載の発明は、請求項1〜4のいずれか1項に記載の光ファイバ接続用工具において、基部は、手持操作を可能にする握持部分を備え、手動操作部材の操作要素が握持部分に近接して配置され、握持部分に、操作要素を操作する親指の付け根を沿わせることができる凹曲縁が形成される光ファイバ接続用工具を提供する。
【0017】
請求項6に記載の発明は、請求項1〜5のいずれか1項に記載の光ファイバ接続用工具において、基部に設けられ、基部を、光ファイバ敷設現場に設置される板縁又は線状体へ搭載できるようにする搭載部をさらに具備し、搭載部が、基部の外側に突出しない凹状構造を有する光ファイバ接続用工具を提供する。
【0018】
請求項7に記載の発明は、基部と、基部上に配置され、一対の光ファイバの素線同士を先端突き合わせ状態で接続可能な光ファイバ接続装置を支持する装置支持部と、装置支持部から離間して基部上に配置され、接続対象の光ファイバのそれぞれを個別に仮保持する複数のファイバ保持部とを具備する光ファイバ接続用工具において、基部に設けられ、基部を、光ファイバ敷設現場に設置される板縁又は線状体へ搭載できるようにする搭載部をさらに具備し、搭載部が、基部の外側に突出しない凹状構造を有することを特徴とする光ファイバ接続用工具を提供する。
【0019】
【発明の実施の形態】
以下、添付図面を参照して、本発明の実施の形態を詳細に説明する。全図面に渡り、対応する構成要素には共通の参照符号を付す。
図1〜図3は、本発明の一実施形態による光ファイバ接続用工具10(以下、工具10と略称する)を示す図、図4及び図5は、工具10による光ファイバ接続作業で使用する光ファイバ接続装置12を示す図、図6及び図7は、工具10の主要部の拡大図、図8〜図10は、工具10によるファイバ接続作業を説明する図である。
【0020】
図1〜図3に示すように、工具10は、基部14と、基部14上に配置され、光ファイバ接続装置12を支持する装置支持部16と、装置支持部16から離間して基部14上に配置され、接続対象の光ファイバFのそれぞれを個別に仮保持する複数(図では2個)のファイバ保持部18とを備える。基部14は、例えば樹脂成形品からなる平板状部材であり、図1の平面視で中心線L1に関し左右対称の形状を有する。基部14には、中心線L1に関し対称配置で図1の下方に延長される一対の延長部分20が設けられ、それら延長部分20の相互対向側の外縁にそれぞれ凹曲縁20aが形成される。基部14は、全体として作業者が片手で把持できる程度の外形寸法を有する。特に延長部分20は、後述するように作業者の手持操作を可能にする握持部分として機能する。
【0021】
装置支持部16は、基部14の平坦な表面14aの略中央に立設される壁状部材であり、中心線L1に関し対称に延びるその頂面に、光ファイバ接続装置12を着脱自在に受容する台座22が設けられる。台座22には、中心線L1に直交する軸線L2に沿って直線状に延びる支持凹所24が形成される。一対のファイバ保持部18は、基部表面14aの左右両端領域に、中心線L1に関し対称に配設される。各ファイバ保持部18は、スポンジ等のブロック状の弾性材料からなる保持部材26を備え、各保持部材26に、光ファイバFを着脱自在に受容する開閉可能な受容溝28が形成される。両ファイバ保持部18の保持部材26の受容溝28は、装置支持部16の支持凹所24から左右等距離だけ離れた位置で軸線L2に沿って配置される。なお、装置支持部16及びファイバ保持部18の更なる詳細は後述する。
【0022】
図4及び図5に示すように、工具10を適用する光ファイバ接続装置12は、全長に渡って空洞部分30を有する棒状のジャケット32と、ジャケット32の空洞部分30に収納される素線固定部材34と、素線固定部材34を抱持してジャケット32に取り付けられるキャップ36と、ジャケット32の軸線方向両端にそれぞれ取り付けられる一対のエンドプラグ38とを備える。ジャケット32は、例えば樹脂成形品からなる角材状部材であり、その1つの対角線方向に深く抉れるように空洞部分30が形成される。空洞部分30は、ジャケット32の1つの長手方向稜線に沿って開口するとともに、ジャケット32の長手方向両端面で開口する。ジャケット32の長手方向両端領域では、空洞部分30の底部に沿って、光ファイバFを受容するファイバ通路40が形成される。
【0023】
素線固定部材34は、金属等の硬質材料からなる薄板状部材であり、その中心線に沿って二つ折りに畳んだ形態で空洞部分30に収納される。二つ折りの素線固定部材34は、光ファイバFの、被覆を除去した素線Cを受容挟持する対向挟持面42を有し、その対向挟持面42の一方に、光ファイバ素線Cを予め定めた位置に保持するための直線状のガイド溝44(例えば断面V字状のV溝)が形成される。素線固定部材34を空洞部分30内の適正位置に収納したときに、ガイド溝44は、ジャケット32の一対のファイバ通路40に実質的に整列して配置される。
【0024】
キャップ36は、例えば樹脂成形品からなる蓋状部材であり、ジャケット32の空洞部分30に収納された素線固定部材34の、対向挟持面42の裏側の両側面を抱き込むように挟持する一対の抱持壁46を備える。キャップ36は、それら抱持壁46の内側に素線固定部材34を受容した状態で、両抱持壁46がジャケット32の空洞部分30に嵌入される。キャップ36は、ジャケット32に適正に取り付けられたときに、光ファイバ接続装置12の四角柱状の外周面を相補的に構成し、この状態で、両抱持壁46から素線固定部材34にその対向挟持面42を密接させる方向への押圧力を加える。
【0025】
一対のエンドプラグ38は、例えば樹脂成形品からなる栓状部材であり、ジャケット32の空洞部分30の長手方向両端領域にそれぞれ嵌入される。各エンドプラグ38は、ジャケット32に適正に取り付けられたときに、光ファイバ接続装置12の略平坦な軸線方向端面を相補的に構成し、この状態でジャケット32と協働して、光ファイバFの被覆を有する部分を収容するファイバ通路40を画定する。また、各エンドプラグ38は、ジャケット32に適正に取り付けられたキャップ36と協働して、ファイバ通路40に収容された光ファイバFに適当な押圧力を加える。
【0026】
上記構成を有する光ファイバ接続装置12は、ジャケット32の空洞部分30に素線固定部材34及び両エンドプラグ38を適正に装着する一方、キャップ36を素線固定部材34に不完全に被せた状態(図5(a))で、接続対象の一対の光ファイバFを対応のファイバ通路40にそれぞれ受け入れることができる。
そして、それら光ファイバFの素線Cを、素線固定部材34のガイド溝44内で先端突き合わせ位置に配置し、その状態で、キャップ36を空洞部分30に強制的に押し込むことにより、対向挟持面42の間に両光ファイバ素線Cを圧力下で固定的に挟持してガイド溝44内で同軸に相互接続することができる(図5(b))。本発明の一実施形態による工具10は、このような単心接続用の光ファイバ接続装置12に対し、接続対象の光ファイバ素線Cを損傷することなく、それら素線Cをガイド溝44内で正確に位置決めして、先端突き合わせ状態を安定的に維持しながら相互接続するファイバ接続作業を、熟練を要することなく迅速に実施できるように構成されている。
【0027】
図6を参照すると、工具10の装置支持部16は、平壁状の基礎部分の頂面に設けた台座22に、光ファイバ接続装置12のジャケット32の、キャップ36とは反対側の外面角部を支持するV溝状の支持凹所24を備える。また台座22には、支持凹所24の長手方向(軸線L2方向)両側にそれぞれ隣接して、二組の規制壁48が設けられる。各組の一対の規制壁48は、光ファイバ接続装置12のジャケット32の対角方向寸法に略等しい相互間隔を有し、それにより、支持凹所24に支持した光ファイバ接続装置12のジャケット32を、両規制壁48間に着脱自在に受容して台座22上で傾倒しないように所定姿勢に保持する。
このようにして台座22上に保持された光ファイバ接続装置12は、そのファイバ通路40及びガイド溝44が、基部14上で軸線L2に沿って位置決めされることになる。なお、装置支持部16の二組の規制壁48のさらに軸線方向外側には、接続対象の一対の光ファイバFを直線状に案内保持する案内溝50がそれぞれ設けられる。
【0028】
再び図1〜図3を参照すると、延長部分20とは反対側の基部14の外縁に沿って、中心線L1に関し対称配置で一対のコラム52が基部表面14aに直立状に立設され、それらコラム52の上端領域に、枢軸54を介して押下レバー56が回動自在に連結される。押下レバー56は、枢軸54の反対側の端部領域56aを力点とし、枢軸54と端部領域56aとの中間に形成した***部分56bを作用点として、装置支持部16の台座22に適正に搭載した光ファイバ接続装置12に対し、作業者の手動操作により、ジャケット32に不完全に取り付けられたキャップ36を空洞部分30に完全に押し込むように作用する。
【0029】
さらに、工具10の特徴的構成として、各ファイバ保持部18の保持部材26は、光ファイバFに長手方向張力を実質的に加えることなく光ファイバFを受容溝28へ挿入できるようにする開位置と、受容溝28に挿入された光ファイバFを適当な圧力下で挟持する閉位置との間で変位動作できるように構成される。そして、各ファイバ保持部18には、保持部材26をそれら開位置と閉位置との間で変位動作させるための手動操作部材58が、保持部材26に作用的に連結して配設される。
【0030】
図7に拡大して示すように、保持部材26の受容溝28は、直方体形状の保持部材26の一面に凹設したV溝状の導入部分28aと、導入部分28aのV字頂点に連通する切れ目部分28bとを有する。保持部材26は、その一部が受容溝28によって一対の腕部分26aに対称に分断される一方、切れ目部分28bが弾性材料の中途で終端することにより、両腕部分26aが一体に連結された形態となっている。したがって保持部材26は、両腕部分26aがそれらの連結部位を中心に相互離反方向へ変位することにより、受容溝28の特に切れ目部分28bを開放する開位置に到達し、両腕部分26aがそれらの連結部位を中心に相互接近方向へ変位することにより、受容溝28の特に切れ目部分28bを閉鎖する閉位置に到達する。このような変位動作の間、保持部材26は、両腕部分26aの連結部位及びその近傍で弾性変形して、受容溝28を開閉する。
【0031】
手動操作部材58は、保持部材26を担持する弾性変形可能な担持要素60と、担持要素60に一体的に連結され、作業者の手動操作力を担持要素60に伝達して担持要素60を弾性変形させる操作要素62とを備える。担持要素60は、互いに平行に延びる一対の壁部分60aと、それら壁部分60aを相互に連結する断面U字状の連結部分60bとを一体に有し、両壁部分60aが保持部材26の両腕部分26aの外面に例えば接着剤により強固に固着される。操作要素62は、担持要素60の一方の壁部分60aと連結部分60bとの境界領域から側方へ延設される平板状要素である。操作要素62は、図1の平面視で、担持要素60の壁部分60aに対して斜めに延設され、基部14の延長部分20に近接する位置に配置される。
【0032】
手動操作部材58は、操作要素62の反対側で担持要素60から側方へ延設される延長片64をさらに備え、延長片64にて、例えばボルト66により基部14の表面14aに固定される。このとき手動操作部材58は、それ自体が弾性変形していない初期(無負荷)状態で、操作要素62が基部表面14aの上方へ実質的平行に離隔して配置されるように、基部14に片持ち梁式に固定される。この初期状態で、各ファイバ保持部18の保持部材26は、受容溝28を、装置支持部16の支持凹所24に軸線方向へ整列させて、基部表面14aの上方所定位置に配置される。
【0033】
上記した初期状態から、作業者が操作要素62を基部14に接近する方向へ手動押圧操作すると、担持要素60の特に連結部分60bが弾性変形して、両壁部分60aが連結部分60bを中心に相互離反方向へ変位する。それに伴い、保持部材26は、両腕部分26aがそれらの連結部位を中心に相互離反方向へ変位して、前述した開位置へと動作する。そしてこの開位置から、作業者が操作要素62への押圧力を解除すると、担持要素60の特に連結部分60bが弾性復元して、両壁部分60aが連結部分60bを中心に相互接近方向へ変位する。それに伴い、保持部材26は、両腕部分26aがそれらの連結部位を中心に相互接近方向へ変位して、前述した閉位置へと動作する。
【0034】
ファイバ保持部18の各々はさらに、基部14の上方に位置する保持部材26の軸線(L2)方向両側に配置される一対の整列板68を備える。各整列板68は、保持部材26及び手動操作部材58から僅かに離隔して基部表面14aに直立状に立設される。各整列板68には、保持部材26の受容溝28に対して軸線(L2)方向へ整列して配置される補助溝70が形成される。これら整列板68は、後述する手順で保持部材26に仮保持される光ファイバFを、保持部材26の軸線方向両側で補助溝70に受容することにより、光ファイバFが保持部材26の受容溝28に対して常に平行に方向付けされるように機能する。それにより、保持部材26の両腕部分26aの開閉動作によって受容溝28に受容される光ファイバFの一部分に、長さ方向へ一様に分布する保持圧力が負荷されるようになっている。
【0035】
上記構成を有する工具10により、光ファイバ接続装置12を用いて実施されるファイバ接続作業の一例を、図8〜図10を参照して説明する。
まず準備作業として、接続対象の2本(第1及び第2)の光ファイバFに対し、それぞれの線端所望長さ領域の被覆を除去して素線Cを露出させ、露出した素線Cを専用の切断工具で所定長さに切断する線端処理を施す。他方、前述したようにキャップ36を素線固定部材34に不完全に被せた状態(図5(a))の光ファイバ接続装置12を、工具10の装置支持部16の台座22に前述した適正姿勢で搭載する。
【0036】
作業者は、この光ファイバ接続装置12に対し、一方のエンドプラグ38に隣接して開口するファイバ通路40に、一方(第1)の光ファイバFを先端から、その被覆がファイバ通路40内の縮径部位に衝突して止まるまで挿入して、その素線Cを開放状態の素線固定部材34のガイド溝44内に挿し込む(図8)。そして、この光ファイバFを、対応側(第1)のファイバ保持部18の保持部材26の近傍に這わせておく(図9(a−1)、(b−1))。
【0037】
次に作業者は、第1のファイバ保持部18に対し、一方の手で、手動操作部材58の操作要素62を基部14に接近する方向へ押圧するように手動操作して、保持部材26をその受容溝28が開放される開位置へと変位動作させる(図9(a−2)、(b−2))。この状態で作業者は、他方の手で、第1の光ファイバFを、その先端が光ファイバ接続装置12に挿入された状態を維持しながら、開位置にある保持部材26の開放された受容溝28の切れ目部分28bに落し込む。このとき光ファイバFは、一対の整列板68の補助溝70にも受容され、それにより、開放された受容溝28内で軸線L2に沿って適正に配置される。
【0038】
そこで作業者は、操作要素62への押圧力を解除して、手動操作部材58の担持要素60の弾性復元作用により、保持部材26をその受容溝28が閉鎖される閉位置へと変位動作させる(図9(a−3)、(b−3))。その結果、第1の光ファイバFは、第1のファイバ保持部18における保持部材26の受容溝28の切れ目部分28b内に、保持部材26自体の弾性復元力によって得られる所定圧力下で仮保持される。
【0039】
このようにして一方の光ファイバFを対応のファイバ保持部18に仮保持した後、他方(第2)の光ファイバFを、光ファイバ接続装置12の他方のエンドプラグ38に隣接して開口するファイバ通路40に先端から挿入して、その素線Cを開放状態の素線固定部材34のガイド溝44内に挿し込む。このとき第2の光ファイバFは、適当な長さがファイバ通路40に挿入されると、その素線Cがガイド溝44内で第1の光ファイバFの素線Cに突き当たるが、そこで更なる長さを挿し込むことにより、第1の光ファイバFを、それを仮保持した第1のファイバ保持部18と光ファイバ接続装置12との間の長さ領域で撓んだ状態にする。
【0040】
次に作業者は、第2の光ファイバFを持ち替えることなく、他方の手で、空いている第2のファイバ保持部18に対し、手動操作部材58の操作要素62を基部14に接近する方向へ押圧するように手動操作して、保持部材26を開位置へと変位動作させる。この状態で作業者は、第2の光ファイバFを掴んだ手で、第1の光ファイバFを撓ませた状態を維持しながら、開位置にある保持部材26の開放された受容溝28の切れ目部分28bに第2の光ファイバFを落し込む。このとき第2の光ファイバFは、第1の光ファイバFとの弾性力の釣り合いで、第2のファイバ保持部18と光ファイバ接続装置12との間の長さ領域で撓んだ状態になり、また一対の整列板68によって、開放された受容溝28内で軸線L2に沿って適正に配置される。
【0041】
そこで作業者は、操作要素62への押圧力を解除して、手動操作部材58の担持要素60の弾性復元作用により、保持部材26をその受容溝28が閉鎖される閉位置へと変位動作させる。その結果、第2の光ファイバFは、第2のファイバ保持部18における保持部材26の受容溝28の切れ目部分28b内に、保持部材26自体の弾性復元力によって得られる所定圧力下で仮保持される。このようにして両ファイバ保持部18に仮保持された第1及び第2の光ファイバFは、光ファイバ接続装置12と対応のファイバ保持部18との間で撓みを生じており、その結果、ファイバ接続装置12の開放状態にある素線固定部材34のガイド溝44内で、両者の素線C同士が、光ファイバF自体の弾性復元力による適当な押圧力の下で先端突き合わせ状態に維持される(図10)。
【0042】
最後に作業者は、工具10の押下レバー56を回動させて、その***部分56bを、装置支持部16に搭載した光ファイバ接続装置12のキャップ36に押し当て、さらに押下することにより、キャップ36をジャケット32の空洞部分30に強制的に押し込む。それにより、光ファイバ接続装置12の素線固定部材34に一対の光ファイバ素線Cが圧力下で固定的に挟持されて、ガイド溝44内で同軸に相互接続される。このようにして、一対の光ファイバFの先端突き合わせ状態での接続が完了する。
【0043】
このように、上記構成を有する工具10によれば、接続対象の光ファイバFをファイバ保持部18に仮保持させる際に、保持部材26を意図的に開閉動作させることにより、光ファイバFに長手方向張力を加えることなく仮保持させることが可能になる。したがって、光ファイバFの仮保持操作に際して、光ファイバFを損傷する懸念が排除されるとともに、一対の光ファイバFを確実に撓ませた状態で仮保持させることができるから、光ファイバ接続装置12のガイド溝44内で両光ファイバ素線Cの間に所望の突き合わせ力を容易に確保できる。したがって工具10によれば、光ファイバ接続装置12を用いたファイバ接続作業に際し、作業者の熟練や細心の注意を必要とせずに、接続対象の光ファイバFを損傷することなく、光ファイバ素線Cをガイド溝44内で正確に位置決めして、先端突き合わせ状態を安定的に維持しながら相互接続することができる。
【0044】
しかも工具10においては、基部14が片手で把持できる程度の外形寸法を有するので、前述したように、ファイバ保持部18の保持部材26を開閉動作させる際に、作業者が一方の手で基部14を把持しながら、その手の所望の指で手動操作部材58の操作要素62を手動押圧操作することができる。特に図示実施形態では、基部14の延長部分20の凹曲縁20aに親指の付け根を沿わせて基部14を安定的に握持した状態で、その親指によって手動操作部材58の操作要素62を手動押圧操作できる(図8参照)。そして作業者は、このように片手で基部14を支持した状態で、他方の手により光ファイバFを迅速に保持部材26の受容溝28に落し込み、次いで手動操作部材58の操作要素62から指を離すだけで確実に光ファイバFを保持部材26に仮保持させることができる。したがって工具10によれば、光ファイバ敷設現場で適当な工具載置平面を確保できない場合であっても、作業台や支持具を用意することなく、工具手持状態での安全かつ確実なファイバ接続作業を安定的に実施することができる。
【0045】
本発明に係る工具10は、安定的な手持作業を実現するものであるから、工具10を多様な姿勢に支持して作業することを考慮して、その構成部品群を可及的に一体化しておくことが、作業中の構成部品の脱落を確実に防止する観点で有利である。例えば図11に変形例として示すように、ファイバ保持部18の手動操作部材58を、その担持要素60の一部分で基部14に一体的に連結する構成とすることができる。この場合、基部14と手動操作部材58とを、同一又は異なる樹脂材料から一体成形することが有利である。同様に、装置支持部16の平壁状基礎部分やファイバ保持部18の整列板68も、基部14に一体成形できる。
【0046】
また、図12及び図13に他の変形例として示すように、工具10のファイバ保持部18は、手動操作部材58の操作要素62を基部14の表面14aに接近する方向へ移動操作する上記構成に代えて、操作要素62を基部表面14aに平行な方向へ移動操作する構成を採用することもできる。この構成では、手動操作部材58の担持要素60は、基部14から側方へ延長される連結部分60bと、連結部分60bの先端で基部14の外縁に離間対向する壁部分60aとを有し、壁部分60a及び基部外縁が保持部材26の外面に例えば接着剤により強固に固着される。操作要素62は、連結部分60bからさらに外方へ延長される。このような構成によれば、手動操作部材58の操作要素62を図示矢印方向へ押圧操作することにより、保持部材26の受容溝28が開放され、操作要素62への押圧力を解除することにより、主として連結部分60bの弾性復元力によって保持部材26の受容溝28が閉鎖される。したがって、図1の工具10におけるファイバ保持部18と同様のファイバ仮保持操作を実施できる。
【0047】
本発明に係る光ファイバ接続用工具は、ファイバ保持部の構成を上記した弾性材料からなる保持部材26を有する構成に限定するものではない。例えば図14に示すように、基部14に固定的に設置される固定要素72aと、基部14に移動可能に設置される可動要素72bと、可動要素72bを固定要素72aに接近する方向へ付勢する弾性要素72cとを備えた保持部材72を、ファイバ保持部に採用することができる。この保持部材72では、固定要素72aと可動要素72bとの相互対向面間に、光ファイバFを受容する開閉可能な受容溝74が形成される。保持部材72は、通常は弾性要素72cの作用により、受容溝74が閉鎖される閉位置に置かれ、作業者が可動要素72bに連結された手動操作部材76を手動操作することにより、この閉位置から、受容溝74が開放される開位置に変位動作する。保持部材72が開位置にある間は、光ファイバFに長手方向張力を実質的に加えることなく、光ファイバFを受容溝74へ挿入できる。そして、作業者が手動操作部材76から手を離すと、弾性要素72cの付勢により、保持部材72が閉位置に変位動作して、受容溝74に挿入された光ファイバFを圧力下で挟持する。
【0048】
上記した保持部材72は、可動要素72bが固定要素72aに対して平行移動する図示構成に代えて、図15に示すように、可動要素72bが固定要素72aに対して支軸回転する構成とすることもできる。この場合、手動操作部材76は、リンク構造78を介して可動要素72bに連結できる。また、可動要素72bを固定要素72aに向けて付勢する力は、重力や図示しないばね、磁石等によって得ることができる。これらの構成を有する保持部材72によっても、図1の工具10におけるファイバ保持部18と同様のファイバ仮保持操作を実施できることは理解されよう。
【0049】
本発明に係る工具10は、前述したように、光ネットワークの構築に際して光ファイバ敷設現場での作業に特に好適に使用できる。こうした現場作業では、工具10を安定的に載置できる場所(すなわち平坦面)を確保することが困難な場合があるので、適当な工具載置平面が無いような現場での使用を考慮した構成が工具10に要求される。そのような観点で、図16に変形例として示す工具10は、基部14を、適当な板縁や線状体へ搭載できるようにする搭載部80をさらに備える。
【0050】
図示実施形態では、搭載部80は、基部14の所望位置に凹設される切欠き82を備える。切欠き82は、基部14の表面14aに対して所望方向へ所望角度で傾斜して延設される。このような切欠き82は、例えば、光ファイバ敷設現場に設置される配線収納箱の、外装パネルの周縁や引出状トレイの立上縁のような板縁を、がたつき無く受容できるように形成される。また、図17に示すように、基部14の所望位置に内設した弾性ブロック84に、基部表面14aに直交する方向へ切欠き86を凹設することによって、搭載部80を構成することもできる。このような切欠き86は、例えば、光ファイバ敷設現場に設置される光ケーブル補強ワイヤのような線状体を、切欠き86の拡張底部にがたつき無く受容できるように形成される。
【0051】
上記構成を有する搭載部80は、工具載置平面の確保が困難な現場でも、上記したように工具10を適当な場所に取り付けてファイバ接続作業を実施できるようにするものである。しかも搭載部80は、基部14の外側に突出しない凹状構造を有するので、工具10における無用な張出部分を可及的に排除して、その携帯性を一層向上させることができる。したがって、搭載部80を備えた工具10は、架空光ケーブルに対する高所作業のような状況下でも、作業者に無用な気遣いを強いることが無いので、気安く工具10を携帯でき、しかも通常の平置き作業においても、工具占有面積を抑制して取り扱いを容易にすることができる。なお、このような搭載部の構成は、前述した本発明に係る工具10のみならず、他の様々な構成を有する光ファイバ接続用工具に適用できるものである。
【0052】
【発明の効果】
以上の説明から明らかなように、本発明によれば、光ファイバ接続装置を用いてファイバ接続作業を実施するための光ファイバ接続用工具において、熟練を要することなく正確で作業性に優れたファイバ接続作業を安定して実施できるようになり、しかも敷設現場における工具手持状態での接続作業を容易に実現できるようになる。さらに本発明によれば、光ファイバ接続装置を用いてファイバ接続作業を実施するための光ファイバ接続用工具において、無用な張出部分を極力排除して携帯性を向上させる一方、工具載置平面の確保が困難な現場でも適当な場所に取り付けて使用できるようになる。
【図面の簡単な説明】
【図1】本発明の一実施形態による光ファイバ接続用工具の平面図である。
【図2】図1の光ファイバ接続用工具の側面図である。
【図3】図1の光ファイバ接続用工具の正面図である。
【図4】図1の光ファイバ接続用工具を使用できる光ファイバ接続装置の分解斜視図である。
【図5】図4の光ファイバ接続装置の組立断面図で、(a)光ファイバ素線を挿入するときの相対配置、及び(b)光ファイバ素線を固定するときの相対配置をそれぞれ示す。
【図6】図1の光ファイバ接続用工具の装置支持部を、図4の光ファイバ接続装置と共に示す拡大斜視図である。
【図7】図1の光ファイバ接続用工具のファイバ保持部を、光ファイバと共に示す拡大斜視図である。
【図8】図1の光ファイバ接続用工具の使用形態を示す斜視図である。
【図9】図1の光ファイバ接続用工具によるファイバ仮保持手順を示す図で、(a−1;b−1)仮保持前の状態、(a−2;b−2)保持部材が開位置にある状態、及び(a−3;b−3)仮保持状態をそれぞれ示す。
【図10】図1の光ファイバ接続用工具の使用形態を示す斜視図である。
【図11】変形例による光ファイバ接続用工具の平面図である。
【図12】他の変形例による光ファイバ接続用工具の平面図である。
【図13】さらに他の変形例による光ファイバ接続用工具の平面図である。
【図14】さらに他の変形例による光ファイバ接続用工具の断面図で、(a)保持部材が閉位置にある状態、及び(b)保持部材が開位置にある状態を示す。
【図15】さらに他の変形例による光ファイバ接続用工具の断面図で、(a)保持部材が閉位置にある状態、及び(b)保持部材が開位置にある状態を示す。
【図16】本発明の他の実施形態による光ファイバ接続用工具の側面図である。
【図17】変形例による搭載部の図である。
【符号の説明】
10…光ファイバ接続用工具
12…光ファイバ接続装置
14…基部
16…装置支持部
18…ファイバ保持部
20…延長部分
26、72…保持部材
28、74…受容溝
58、76…手動操作部材
60…担持要素
62…操作要素
80…搭載部
82…切欠き
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical fiber connection tool for performing a fiber connection operation using an optical fiber connection device capable of connecting the strands of a pair of optical fibers in a state where they are butted.
[0002]
[Prior art]
In optical fiber connection technology, there is an optical fiber connection device that can permanently connect optical fiber strands from which coatings have been removed, with their respective end faces confronting each other coaxially, without being fused or bonded. Is known by the name of “mechanical splice” (see, for example, Patent Document 1). This type of optical fiber connecting device generally includes a strand fixing member having an opposing clamping surface for receiving and clamping an optical fiber strand, and at least one of the opposing clamping surfaces has a predetermined position for the optical fiber strand. A linear guide groove (for example, a V groove having a V-shaped cross section) is formed. When connecting, a pair of optical fiber strands are arranged at the tip butting position in the guide groove of the strand fixing member, and in this state, a pressing force is applied to the strand fixing member from the outside, whereby both optical fiber strands are The wires can be fixedly clamped between opposing clamping surfaces under pressure and interconnected coaxially within the guide groove.
[Patent Document 1]
Japanese Patent No. 2713309
[0003]
The above-mentioned optical fiber connection devices include those for single-core connection in which one guide groove is formed in the strand fixing member and those for multi-core connection in which a plurality of guide grooves are formed in the strand fixing member. However, in any configuration, the optical fiber strands to be connected are not damaged, and the strands are required to be accurately positioned in the guide groove and interconnected while maintaining the tip butting state stably. Is done. Therefore, conventionally, a dedicated connection tool is provided for each of various optical fiber connection devices in order to perform such a fiber connection operation quickly without requiring skill (see, for example, Patent Document 2). ).
[Patent Document 2]
Japanese Patent Laid-Open No. 9-61654
[0004]
A connecting tool disclosed in Patent Document 2 is installed on a base, a device support that is installed on the base, and supports the optical fiber connection device, and is installed on the base apart from the device support. And a fiber holding part for temporarily holding the optical fiber. The fiber holding portion includes an elastic member (sponge) fixedly installed in the steel support frame. The elastic member has a V-groove on the surface and a notch communicating with the V-groove. An optical fiber connecting tool having a fiber holding portion using such a cut elastic member is also described in Japanese Patent Application No. 2002-240836, which is a prior application by the applicant of the present application.
[0005]
The connection work by the optical fiber connection tool of Patent Document 2 is performed as follows. First, with respect to the optical fiber connecting device mounted on the device support portion with the opposing clamping surface of the strand fixing member open, the first optical fiber strand is inserted into the guide groove and the covering portion is connected to the connecting device main body. Next, the strand of the second optical fiber is inserted into the same guide groove, and the coated portion is pushed into the elastic member of the fiber holding portion and temporarily held. At this time, if the second optical fiber is temporarily held by the fiber holding portion so that the second optical fiber extending between the fiber holding portion and the optical fiber connecting device is bent, a guide for the optical fiber connecting device is obtained. The strands of both optical fibers are placed in the tip end state in the groove, and the tip end state is maintained with an appropriate pressing force resulting from the elastic restoring force of the second optical fiber. Therefore, if the covering portion of the second optical fiber is fixed to the main body of the connection device and the opposing holding surface of the strand fixing member is closed, the strands of both optical fibers are subjected to an appropriate butting force in the guide groove. Is precisely coaxially connected.
[0006]
By the way, the above-described fiber connection work is often a work at an optical fiber installation site when an optical network is constructed. In such field work, it may be difficult to secure a place (that is, a flat surface) where the optical fiber connection tool can be stably placed. In this case, the reliability and reproducibility of the connection work described above may not be achieved. It is feared that it will be damaged. Therefore, in consideration of use in the field where there is no suitable tool placement plane, the optical fiber connection tool is suspended from the base so that the connection work can be performed in a state where it is suspended from a cable or other construction member. A configuration in which a hook is attached has also been proposed (see, for example, Patent Document 3).
[Patent Document 3]
JP-A-9-197159
[0007]
[Problems to be solved by the invention]
In the optical fiber connecting tool disclosed in Patent Document 2 described above, when the optical fiber is temporarily held by being pushed into the cut of the elastic member of the fiber holding portion, the operator can appropriately apply the covering portion of the optical fiber with each hand. It is necessary to perform an operation of grasping two places apart from each other and pushing the optical fiber into a break while applying tension to the fiber region between the places. Such fiber pushing operation requires caution so as not to apply an unnecessary tension to the optical fiber. In addition, the position of the strand of the optical fiber in the guide groove of the optical fiber connecting device is shifted during the operator's both-hand operation, and as a result, the desired butt force cannot be obtained, or the strand is dropped from the guide groove. Therefore, careful attention and skill are required for the fiber pushing operation.
[0008]
In addition, in order to realize such a two-handed operation, a place where the optical fiber connecting tool can be stably placed is necessary. However, as described above, an appropriate tool placement plane is secured at the optical fiber installation site. In this case, it is necessary to prepare a work table and a support tool separately. Furthermore, in situations where it is difficult to use a workbench or support tool, it is necessary to hold the optical fiber connecting tool with one hand and push the optical fiber into the elastic member with only the other hand. Operation may cause damage to the optical fiber.
[0009]
On the other hand, the optical fiber connecting tool disclosed in Patent Document 3 described above has a hanging hook attached to the base so as to be able to cope with the above-described on-site connection work. Therefore, there is a concern that the tool occupying area in the normal flat work other than hanging becomes large, making it difficult to handle. In addition, there is a risk of hooking the protruding hook against surrounding objects or clothes, especially when working at high altitudes with respect to an aerial optical cable, so there is a concern that carrying the tool itself may be a burden on the operator. .
[0010]
An object of the present invention is to provide an optical fiber connection tool for performing a fiber connection operation using an optical fiber connection device, and can stably carry out an accurate and excellent workability without requiring skill. Moreover, an object of the present invention is to provide an optical fiber connecting tool that can easily realize a connection operation in a tool-held state at a laying site.
[0011]
Another object of the present invention is to provide an optical fiber connecting tool for carrying out a fiber connecting operation using an optical fiber connecting device, and to improve portability by eliminating unnecessary protruding portions as much as possible. An object of the present invention is to provide an optical fiber connecting tool that can be used by being attached to an appropriate place even on a site where it is difficult to secure a flat surface.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is an apparatus for supporting an optical fiber connecting device that is disposed on a base and can be connected in a state where the strands of a pair of optical fibers are connected to each other in a tip end state. An optical fiber connecting tool comprising: a support portion; and a plurality of fiber holding portions that are disposed on the base portion apart from the device support portion and temporarily hold each optical fiber to be connected individually. Each of the portions is a holding member having an openable and closable receiving groove for receiving the optical fiber, the open position allowing the optical fiber to be inserted into the receiving groove without substantially applying longitudinal tension to the optical fiber; A holding member that can be displaced between a holding position that sandwiches the optical fiber inserted in the receiving groove, and a holding member that is connected to the holding member and that moves the holding member between the open position and the closed position. And a dynamic operating member The manual operation member includes an operation element arranged in parallel with the base surface in an initial state where the manual operation is not performed, and is fixed to the base in a cantilever manner, and the operation element approaches the base from the initial state. The holding member is displaced from the closed position to the open position by manual operation in the direction An optical fiber connecting tool is provided.
[0013]
According to a second aspect of the present invention, in the optical fiber connecting tool according to the first aspect, the manual operation member is integrally connected to the support element and the elastically deformable support element that supports the holding member. An operation element that elastically deforms the carrying element by transmitting an operating force to the carrying element, In the direction approaching the base Provided is an optical fiber connecting tool in which when a manual operation is performed, a holding member is displaced to an open position with elastic deformation of a carrier element, and a holding member is displaced to a closed position with elastic restoration of the carrier element.
[0014]
According to a third aspect of the present invention, in the optical fiber connecting tool according to the second aspect, the manual operation unit Material , Integrated into the base Molding An optical fiber connecting tool is provided.
[0015]
The invention according to claim 4 is the optical fiber connecting tool according to any one of claims 1 to 3, wherein the holding member is Having a pair of arm portions connected together, While moving between the open position and the closed position, At the connecting part of a pair of arms An optical fiber connecting tool that opens and closes a receiving groove by elastic deformation is provided.
[0016]
According to a fifth aspect of the present invention, in the optical fiber connecting tool according to any one of the first to fourth aspects, the base includes a gripping portion that enables a hand-held operation, and a manual operation member Operation elements Is placed close to the gripping part The grip part is formed with a concave curved edge that can follow the base of the thumb to operate the operating element An optical fiber connecting tool is provided.
[0017]
The invention according to claim 6 is the optical fiber connecting tool according to any one of claims 1 to 5, wherein the tool is provided at the base, and the base is Installed at the site of laying optical fiber There is further provided a tool for connecting an optical fiber, further comprising a mounting portion that can be mounted on a plate edge or a linear body, wherein the mounting portion has a concave structure that does not protrude outside the base portion.
[0018]
According to a seventh aspect of the present invention, there is provided: a base portion; a device support portion that is disposed on the base portion and supports an optical fiber connection device that can connect the strands of a pair of optical fibers in a state of tip-to-end contact; An optical fiber connecting tool, which is disposed on the base and spaced apart and includes a plurality of fiber holders for temporarily holding each of the optical fibers to be connected individually. Installed at the site of laying optical fiber There is provided an optical fiber connecting tool, further comprising a mounting portion that can be mounted on a plate edge or a linear body, wherein the mounting portion has a concave structure that does not protrude outside the base portion.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Corresponding components are denoted by common reference symbols throughout the drawings.
1 to 3 are views showing an optical fiber connecting tool 10 (hereinafter abbreviated as a tool 10) according to an embodiment of the present invention. FIGS. 4 and 5 are used for optical fiber connecting work by the tool 10. FIG. FIGS. 6 and 7 are views showing the optical fiber connecting device 12, FIG. 6 and FIG. 7 are enlarged views of the main part of the tool 10, and FIGS.
[0020]
As shown in FIGS. 1 to 3, the tool 10 is disposed on the base 14, the device support 16 disposed on the base 14 and supporting the optical fiber connecting device 12, and spaced apart from the device support 16 on the base 14. And a plurality (two in the figure) of fiber holding units 18 that temporarily hold each of the optical fibers F to be connected individually. The base 14 is a flat plate member made of, for example, a resin molded product, and has a symmetrical shape with respect to the center line L1 in a plan view of FIG. The base portion 14 is provided with a pair of extension portions 20 extending downward in FIG. 1 in a symmetrical arrangement with respect to the center line L1, and concave edges 20a are formed on the outer edges of the extension portions 20 on the opposite sides. The base 14 as a whole has an external dimension that allows an operator to hold it with one hand. In particular, the extension portion 20 functions as a gripping portion that enables a hand-held operation by an operator as will be described later.
[0021]
The device support portion 16 is a wall-like member standing substantially at the center of the flat surface 14a of the base portion 14, and removably receives the optical fiber connection device 12 on its top surface extending symmetrically with respect to the center line L1. A pedestal 22 is provided. The pedestal 22 is formed with a support recess 24 that extends linearly along an axis L2 orthogonal to the center line L1. The pair of fiber holding portions 18 are disposed symmetrically with respect to the center line L1 in the left and right end regions of the base surface 14a. Each fiber holding portion 18 includes a holding member 26 made of a block-like elastic material such as sponge, and each holding member 26 is formed with an openable / closable receiving groove 28 for detachably receiving the optical fiber F. The receiving grooves 28 of the holding members 26 of both the fiber holding portions 18 are arranged along the axis L2 at positions spaced apart from the support recess 24 of the device support portion 16 by an equal distance from side to side. Further details of the device support 16 and the fiber holder 18 will be described later.
[0022]
As shown in FIGS. 4 and 5, the optical fiber connecting device 12 to which the tool 10 is applied includes a rod-shaped jacket 32 having a hollow portion 30 over the entire length, and fixing of a strand housed in the hollow portion 30 of the jacket 32. A member 34, a cap 36 that holds the strand fixing member 34 and is attached to the jacket 32, and a pair of end plugs 38 that are respectively attached to both ends of the jacket 32 in the axial direction. The jacket 32 is a square-like member made of, for example, a resin molded product, and the hollow portion 30 is formed so as to be deeply wound in one diagonal direction. The hollow portion 30 opens along one longitudinal ridge line of the jacket 32 and opens at both longitudinal end faces of the jacket 32. A fiber passage 40 that receives the optical fiber F is formed along the bottom of the cavity portion 30 in both longitudinal end regions of the jacket 32.
[0023]
The strand fixing member 34 is a thin plate member made of a hard material such as metal, and is housed in the hollow portion 30 in a folded state along the center line. The double-folded strand fixing member 34 has an opposing clamping surface 42 for receiving and clamping the strand C of the optical fiber F from which the coating has been removed, and the optical fiber strand C is preliminarily placed on one of the opposing clamping surfaces 42. A linear guide groove 44 (for example, a V groove having a V-shaped cross section) is formed to be held at a predetermined position. When the strand fixing member 34 is housed in an appropriate position in the hollow portion 30, the guide groove 44 is disposed substantially in alignment with the pair of fiber passages 40 of the jacket 32.
[0024]
The cap 36 is a lid-shaped member made of, for example, a resin molded product, and is a pair that holds the both ends of the wire fixing member 34 housed in the hollow portion 30 of the jacket 32 so as to embrace both side surfaces on the back side of the opposed holding surface 42. The holding wall 46 is provided. The cap 36 is fitted into the hollow portion 30 of the jacket 32 in a state where the wire fixing member 34 is received inside the holding wall 46. When the cap 36 is properly attached to the jacket 32, the outer peripheral surface of the rectangular columnar shape of the optical fiber connecting device 12 is complementarily formed. In this state, the cap 36 is connected to the strand fixing member 34 from both holding walls 46. A pressing force is applied in a direction in which the opposing clamping surface 42 is brought into close contact.
[0025]
The pair of end plugs 38 are plug-shaped members made of, for example, a resin molded product, and are fitted into both end regions in the longitudinal direction of the hollow portion 30 of the jacket 32. When each end plug 38 is properly attached to the jacket 32, the substantially flat axial end face of the optical fiber connecting device 12 is complementarily formed, and in this state, in cooperation with the jacket 32, the optical fiber F A fiber passage 40 is defined that accommodates the portion having the coating. Each end plug 38 cooperates with a cap 36 appropriately attached to the jacket 32 to apply an appropriate pressing force to the optical fiber F accommodated in the fiber passage 40.
[0026]
In the optical fiber connecting device 12 having the above-described configuration, the strand fixing member 34 and both end plugs 38 are properly attached to the hollow portion 30 of the jacket 32, while the cap 36 is incompletely covered with the strand fixing member 34. In FIG. 5A, a pair of optical fibers F to be connected can be received in the corresponding fiber passages 40, respectively.
Then, the strands C of the optical fibers F are arranged at the leading end abutting position in the guide groove 44 of the strand fixing member 34, and in this state, the cap 36 is forcibly pushed into the hollow portion 30 so as to sandwich the opposing portion. Both optical fiber strands C can be fixedly sandwiched between the surfaces 42 under pressure and interconnected coaxially in the guide groove 44 (FIG. 5B). The tool 10 according to the embodiment of the present invention is able to prevent the optical fiber strand C to be connected from being damaged in the guide groove 44 without damaging the optical fiber strand C to be connected. Thus, the fiber connecting operation for accurately positioning and maintaining the tip end butting state can be performed quickly without requiring skill.
[0027]
Referring to FIG. 6, the device support 16 of the tool 10 has an outer surface angle of the jacket 32 of the optical fiber connecting device 12 opposite to the cap 36 on a pedestal 22 provided on the top surface of the flat-walled base portion. V-groove-shaped support recesses 24 that support the portions are provided. The pedestal 22 is provided with two sets of regulation walls 48 adjacent to both sides of the support recess 24 in the longitudinal direction (in the direction of the axis L2). The pair of regulating walls 48 of each set have a mutual interval substantially equal to the diagonal dimension of the jacket 32 of the optical fiber connecting device 12, and thereby the jacket 32 of the optical fiber connecting device 12 supported in the support recess 24. Is detachably received between the regulating walls 48 and held in a predetermined posture so as not to tilt on the base 22.
Thus, the optical fiber connecting device 12 held on the base 22 has its fiber passage 40 and guide groove 44 positioned on the base 14 along the axis L2. Note that guide grooves 50 for linearly guiding and holding the pair of optical fibers F to be connected are provided on the outer sides in the axial direction of the two sets of restriction walls 48 of the apparatus support unit 16.
[0028]
1 to 3 again, a pair of columns 52 are provided upright on the base surface 14a in a symmetrical arrangement with respect to the center line L1 along the outer edge of the base 14 opposite to the extended portion 20, A pressing lever 56 is rotatably connected to the upper end region of the column 52 via a pivot 54. The pressing lever 56 is appropriately applied to the pedestal 22 of the apparatus support portion 16 with the end region 56a opposite to the pivot 54 as a force point and the raised portion 56b formed between the pivot 54 and the end region 56a as an action point. The cap 36 that is incompletely attached to the jacket 32 is completely pushed into the hollow portion 30 by the operator's manual operation on the mounted optical fiber connecting device 12.
[0029]
Further, as a characteristic configuration of the tool 10, the holding member 26 of each fiber holder 18 is an open position that allows the optical fiber F to be inserted into the receiving groove 28 without substantially applying longitudinal tension to the optical fiber F. And a closed position where the optical fiber F inserted into the receiving groove 28 is clamped under an appropriate pressure. In each fiber holding portion 18, a manual operation member 58 for displacing the holding member 26 between the open position and the closed position is operatively connected to the holding member 26.
[0030]
As shown in an enlarged view in FIG. 7, the receiving groove 28 of the holding member 26 communicates with a V-groove-shaped introduction portion 28 a that is recessed in one surface of the rectangular parallelepiped holding member 26, and the V-shaped apex of the introduction portion 28 a. And a cut portion 28b. The holding member 26 is partly divided into a pair of arm portions 26a by receiving grooves 28, while the cut portion 28b terminates in the middle of the elastic material, so that both arm portions 26a are integrally connected. It has a form. Accordingly, the holding member 26 reaches the open position in which the cut portion 28b of the receiving groove 28 is opened, particularly when both the arm portions 26a are displaced in the direction away from each other about the connecting portion. By displacing in the direction of mutual approach around the connecting portion, the closed position for closing the cut portion 28b of the receiving groove 28 is reached. During such a displacement operation, the holding member 26 is elastically deformed at and near the connecting portion of the both arm portions 26a to open and close the receiving groove 28.
[0031]
The manual operation member 58 is integrally coupled to the elastically deformable carrier element 60 that carries the holding member 26 and the carrier element 60, and transmits the manual operation force of the operator to the carrier element 60 to elastically support the carrier element 60. And an operating element 62 to be deformed. The carrying element 60 integrally includes a pair of wall portions 60a extending in parallel with each other and a connecting portion 60b having a U-shaped cross section that connects the wall portions 60a to each other. It is firmly fixed to the outer surface of the arm portion 26a by, for example, an adhesive. The operation element 62 is a flat element that extends laterally from the boundary region between the one wall portion 60 a and the connection portion 60 b of the carrier element 60. The operation element 62 extends obliquely with respect to the wall portion 60 a of the carrier element 60 and is disposed at a position close to the extension portion 20 of the base portion 14 in a plan view of FIG. 1.
[0032]
The manual operation member 58 further includes an extension piece 64 that extends laterally from the carrier element 60 on the opposite side of the operation element 62, and is fixed to the surface 14 a of the base portion 14 by, for example, a bolt 66. . At this time, the manual operation member 58 is in the initial state (no load) in which the manual operation member 58 is not elastically deformed, so that the operation element 62 is disposed substantially parallel and spaced above the base surface 14a. Fixed to a cantilever type. In this initial state, the holding member 26 of each fiber holding portion 18 is disposed at a predetermined position above the base surface 14 a with the receiving groove 28 aligned in the axial direction with the support recess 24 of the device support portion 16.
[0033]
When the operator manually presses the operating element 62 in the direction approaching the base 14 from the initial state described above, the connecting portion 60b of the carrying element 60 is elastically deformed, and both wall portions 60a are centered on the connecting portion 60b. Displaces in the direction of mutual separation. Accordingly, the holding member 26 moves to the open position described above, with the both arm portions 26a being displaced in the direction away from each other around the connecting portions. When the operator releases the pressing force to the operating element 62 from this open position, the connection portion 60b of the carrying element 60 is restored in particular, and both wall portions 60a are displaced in the direction of mutual approach around the connection portion 60b. To do. Accordingly, the holding member 26 moves to the closed position described above, with the both arm portions 26a being displaced in the direction of mutual approach around their connecting portions.
[0034]
Each of the fiber holding portions 18 further includes a pair of alignment plates 68 disposed on both sides in the axis (L2) direction of the holding member 26 located above the base portion 14. Each alignment plate 68 stands upright on the base surface 14a with a slight separation from the holding member 26 and the manual operation member 58. Each alignment plate 68 is formed with an auxiliary groove 70 arranged in alignment with the receiving groove 28 of the holding member 26 in the axis (L2) direction. These alignment plates 68 receive the optical fibers F temporarily held by the holding member 26 in the procedure described later in the auxiliary grooves 70 on both sides in the axial direction of the holding member 26, so that the optical fibers F receive grooves of the holding member 26. It functions to always be oriented parallel to 28. As a result, a holding pressure uniformly distributed in the length direction is applied to a part of the optical fiber F received in the receiving groove 28 by the opening / closing operation of the both arm portions 26a of the holding member 26.
[0035]
With reference to FIGS. 8 to 10, an example of fiber connection work performed using the optical fiber connection device 12 by the tool 10 having the above configuration will be described.
First, as a preparatory work, with respect to the two optical fibers F to be connected (first and second), the covering of each desired length region of the line ends is removed to expose the strand C, and the exposed strand C A line end process is performed to cut the wire to a predetermined length with a dedicated cutting tool. On the other hand, as described above, the optical fiber connection device 12 in the state where the cap 36 is incompletely covered with the wire fixing member 34 (FIG. 5A) is applied to the base 22 of the device support 16 of the tool 10 as described above. Mount with posture.
[0036]
The operator places one (first) optical fiber F from the tip into the fiber passage 40 opened adjacent to the one end plug 38, and the coating is within the fiber passage 40. The wire C is inserted until it collides with the reduced diameter portion and stops, and the wire C is inserted into the guide groove 44 of the open wire fixing member 34 (FIG. 8). Then, the optical fiber F is placed near the holding member 26 of the corresponding (first) fiber holding portion 18 (FIGS. 9A-1 and 9B-1).
[0037]
Next, the operator manually operates the first fiber holding unit 18 with one hand so as to press the operating element 62 of the manual operating member 58 in a direction approaching the base 14, thereby moving the holding member 26. The receiving groove 28 is moved to the open position where it is opened (FIGS. 9A-2 and 9B-2). In this state, the operator uses the other hand to hold the first optical fiber F in the open receiving position of the holding member 26 in the open position while maintaining the state where the tip of the first optical fiber F is inserted into the optical fiber connecting device 12. It drops into the cut portion 28b of the groove 28. At this time, the optical fiber F is also received in the auxiliary grooves 70 of the pair of alignment plates 68, thereby being properly arranged along the axis L <b> 2 in the open receiving grooves 28.
[0038]
Therefore, the operator releases the pressing force to the operation element 62 and causes the holding member 26 to be displaced to the closed position where the receiving groove 28 is closed by the elastic restoring action of the carrying element 60 of the manual operation member 58. (FIG. 9 (a-3), (b-3)). As a result, the first optical fiber F is temporarily held in the cut portion 28b of the receiving groove 28 of the holding member 26 in the first fiber holding portion 18 under a predetermined pressure obtained by the elastic restoring force of the holding member 26 itself. Is done.
[0039]
After temporarily holding one optical fiber F in the corresponding fiber holding portion 18 in this way, the other (second) optical fiber F is opened adjacent to the other end plug 38 of the optical fiber connecting device 12. The wire C is inserted into the fiber passage 40 from the tip, and the wire C is inserted into the guide groove 44 of the open wire fixing member 34. At this time, when an appropriate length of the second optical fiber F is inserted into the fiber passage 40, the strand C of the second optical fiber F hits the strand C of the first optical fiber F in the guide groove 44. By inserting this length, the first optical fiber F is bent in a length region between the first fiber holding unit 18 and the optical fiber connecting device 12 that temporarily holds the first optical fiber F.
[0040]
Next, the operator moves the operation element 62 of the manual operation member 58 closer to the base portion 14 with respect to the vacant second fiber holding portion 18 with the other hand without changing the second optical fiber F. The holding member 26 is displaced to the open position by manual operation so as to press the button. In this state, the operator holds the second optical fiber F with the hand holding the first optical fiber F while maintaining the bent state of the receiving groove 28 of the holding member 26 in the open position. The second optical fiber F is dropped into the cut portion 28b. At this time, the second optical fiber F is in a state of being bent in a length region between the second fiber holding unit 18 and the optical fiber connecting device 12 in balance of the elastic force with the first optical fiber F. In addition, the pair of alignment plates 68 are properly arranged in the open receiving groove 28 along the axis L2.
[0041]
Therefore, the operator releases the pressing force to the operation element 62 and causes the holding member 26 to be displaced to the closed position where the receiving groove 28 is closed by the elastic restoring action of the carrying element 60 of the manual operation member 58. . As a result, the second optical fiber F is temporarily held in the cut portion 28b of the receiving groove 28 of the holding member 26 in the second fiber holding portion 18 under a predetermined pressure obtained by the elastic restoring force of the holding member 26 itself. Is done. The first and second optical fibers F temporarily held in the two fiber holding portions 18 in this way are bent between the optical fiber connecting device 12 and the corresponding fiber holding portions 18, and as a result, In the guide groove 44 of the wire fixing member 34 in the open state of the fiber connection device 12, both the wires C are maintained in a tip-butted state under an appropriate pressing force due to the elastic restoring force of the optical fiber F itself. (FIG. 10).
[0042]
Finally, the operator rotates the pressing lever 56 of the tool 10, presses the raised portion 56 b against the cap 36 of the optical fiber connecting device 12 mounted on the device support 16, and further presses the cap, thereby pressing the cap. 36 is forced into the cavity 30 of the jacket 32. As a result, the pair of optical fiber strands C are fixedly held under pressure by the strand fixing member 34 of the optical fiber connection device 12 and are coaxially connected in the guide groove 44. In this way, the connection of the pair of optical fibers F in the end butted state is completed.
[0043]
As described above, according to the tool 10 having the above-described configuration, when the optical fiber F to be connected is temporarily held by the fiber holding portion 18, the holding member 26 is intentionally opened and closed. Temporary holding can be performed without applying directional tension. Therefore, the fear of damaging the optical fiber F during the temporary holding operation of the optical fiber F is eliminated, and the pair of optical fibers F can be temporarily held in a state of being reliably bent. A desired butting force can be easily secured between the two optical fiber strands C in the guide groove 44. Therefore, according to the tool 10, in the fiber connection work using the optical fiber connection device 12, the optical fiber F is not damaged without requiring the operator's skill and careful attention without damaging the connection target optical fiber F. C can be accurately positioned in the guide groove 44 and can be interconnected while stably maintaining the tip butting state.
[0044]
Moreover, since the tool 10 has an outer dimension that allows the base 14 to be gripped with one hand, as described above, when the holding member 26 of the fiber holder 18 is opened and closed, the operator can use one hand to open the base 14. It is possible to manually press the operation element 62 of the manual operation member 58 with a desired finger of the hand. In particular, in the illustrated embodiment, the operating element 62 of the manual operating member 58 is manually operated by the thumb while the base 14 is stably gripped with the base of the thumb along the concave curved edge 20a of the extended portion 20 of the base 14. It can be pressed (see FIG. 8). Then, the operator quickly drops the optical fiber F into the receiving groove 28 of the holding member 26 with the other hand while supporting the base portion 14 with one hand as described above, and then moves the finger from the operation element 62 of the manual operation member 58. The optical fiber F can be temporarily held on the holding member 26 with certainty simply by releasing the. Therefore, according to the tool 10, even when a suitable tool placement plane cannot be secured at the optical fiber laying site, a safe and reliable fiber connection operation in a tool-held state without preparing a work table or a support tool. Can be carried out stably.
[0045]
Since the tool 10 according to the present invention realizes a stable hand-held operation, its component parts are integrated as much as possible in consideration of working with the tool 10 supported in various postures. It is advantageous from the viewpoint of reliably preventing the component parts from falling off during work. For example, as shown in FIG. 11 as a modified example, the manual operation member 58 of the fiber holding portion 18 may be integrally connected to the base portion 14 by a part of the carrier element 60. In this case, it is advantageous to integrally mold the base 14 and the manual operation member 58 from the same or different resin materials. Similarly, the flat wall-shaped base portion of the apparatus support portion 16 and the alignment plate 68 of the fiber holding portion 18 can be integrally formed with the base portion 14.
[0046]
As shown in FIGS. 12 and 13 as another modified example, the fiber holding portion 18 of the tool 10 moves the operation element 62 of the manual operation member 58 in a direction approaching the surface 14a of the base portion 14. Instead, a configuration in which the operation element 62 is moved and operated in a direction parallel to the base surface 14a may be employed. In this configuration, the carrying element 60 of the manual operation member 58 includes a connecting portion 60b that extends laterally from the base portion 14, and a wall portion 60a that is spaced from and opposed to the outer edge of the base portion 14 at the tip of the connecting portion 60b. The wall portion 60a and the base outer edge are firmly fixed to the outer surface of the holding member 26 with, for example, an adhesive. The operating element 62 extends further outward from the connecting portion 60b. According to such a configuration, by pressing the operating element 62 of the manual operating member 58 in the direction of the arrow in the figure, the receiving groove 28 of the holding member 26 is opened, and the pressing force on the operating element 62 is released. The receiving groove 28 of the holding member 26 is closed mainly by the elastic restoring force of the connecting portion 60b. Therefore, the fiber temporary holding operation similar to the fiber holding part 18 in the tool 10 of FIG. 1 can be performed.
[0047]
In the optical fiber connecting tool according to the present invention, the configuration of the fiber holding portion is not limited to the configuration having the holding member 26 made of the elastic material described above. For example, as shown in FIG. 14, the fixed element 72a fixedly installed on the base 14, the movable element 72b installed movably on the base 14, and the movable element 72b are urged in a direction approaching the fixed element 72a. The holding member 72 provided with the elastic element 72c to be used can be employed for the fiber holding portion. In the holding member 72, an openable / closable receiving groove 74 for receiving the optical fiber F is formed between the mutually opposing surfaces of the fixed element 72a and the movable element 72b. The holding member 72 is normally placed in a closed position where the receiving groove 74 is closed by the action of the elastic element 72c, and the operator manually operates the manual operation member 76 connected to the movable element 72b. From the position, the receiving groove 74 is displaced to an open position where the receiving groove 74 is opened. While the holding member 72 is in the open position, the optical fiber F can be inserted into the receiving groove 74 without substantially applying longitudinal tension to the optical fiber F. When the operator releases his hand from the manual operation member 76, the holding member 72 is displaced to the closed position by the bias of the elastic element 72c, and the optical fiber F inserted into the receiving groove 74 is held under pressure. To do.
[0048]
The holding member 72 described above has a configuration in which the movable element 72b is pivotally rotated with respect to the fixed element 72a as shown in FIG. 15 instead of the illustrated configuration in which the movable element 72b moves in parallel with respect to the fixed element 72a. You can also. In this case, the manual operation member 76 can be connected to the movable element 72 b via the link structure 78. The force for urging the movable element 72b toward the fixed element 72a can be obtained by gravity, a spring (not shown), a magnet, or the like. It will be understood that the fiber temporary holding operation similar to that of the fiber holding portion 18 in the tool 10 of FIG.
[0049]
As described above, the tool 10 according to the present invention can be particularly suitably used for work on an optical fiber installation site when an optical network is constructed. In such field work, it may be difficult to secure a place (that is, a flat surface) on which the tool 10 can be stably placed. Therefore, a configuration in consideration of use in the field where there is no appropriate tool placement plane. Is required for the tool 10. From such a viewpoint, the tool 10 shown as a modified example in FIG. 16 further includes a mounting portion 80 that allows the base portion 14 to be mounted on an appropriate plate edge or linear body.
[0050]
In the illustrated embodiment, the mounting portion 80 includes a notch 82 that is recessed at a desired position of the base portion 14. The notch 82 is extended to be inclined at a desired angle in a desired direction with respect to the surface 14 a of the base portion 14. Such a notch 82 can, for example, receive a plate edge such as a peripheral edge of an exterior panel or a rising edge of a drawer-like tray of a wiring storage box installed at an optical fiber laying site without rattling. It is formed. In addition, as shown in FIG. 17, the mounting portion 80 can be configured by recessing a notch 86 in a direction orthogonal to the base surface 14 a in an elastic block 84 provided in a desired position of the base portion 14. . Such a notch 86 is formed so that, for example, a linear body such as an optical cable reinforcing wire installed in an optical fiber laying site can be received on the extended bottom portion of the notch 86 without rattling.
[0051]
The mounting portion 80 having the above-described configuration enables the fiber connection work to be performed by attaching the tool 10 to an appropriate place as described above even in a site where it is difficult to secure a tool placement plane. Moreover, since the mounting portion 80 has a concave structure that does not protrude to the outside of the base portion 14, unnecessary projecting portions of the tool 10 can be eliminated as much as possible to further improve the portability. Therefore, the tool 10 provided with the mounting portion 80 does not impose unnecessary care on the operator even in situations such as working at high places on an aerial optical cable. Also in the work, the tool occupation area can be suppressed and handling can be facilitated. Note that such a configuration of the mounting portion can be applied not only to the tool 10 according to the present invention described above but also to an optical fiber connecting tool having various other configurations.
[0052]
【The invention's effect】
As is apparent from the above description, according to the present invention, an optical fiber connecting tool for performing a fiber connecting operation using an optical fiber connecting device is an accurate and excellent workability without skill. Connection work can be carried out stably, and connection work in a tool-held state at the laying site can be easily realized. Furthermore, according to the present invention, in an optical fiber connecting tool for carrying out a fiber connecting operation using an optical fiber connecting device, unnecessary projecting portions are eliminated as much as possible to improve portability, while the tool mounting plane Even if it is difficult to secure, it can be used by attaching it to an appropriate place.
[Brief description of the drawings]
FIG. 1 is a plan view of an optical fiber connecting tool according to an embodiment of the present invention.
2 is a side view of the optical fiber connecting tool of FIG. 1. FIG.
3 is a front view of the optical fiber connecting tool of FIG. 1. FIG.
4 is an exploded perspective view of an optical fiber connecting device that can use the optical fiber connecting tool of FIG. 1; FIG.
5 is an assembly cross-sectional view of the optical fiber connection device of FIG. 4, showing (a) a relative arrangement when inserting an optical fiber, and (b) a relative arrangement when fixing the optical fiber. .
6 is an enlarged perspective view showing an apparatus supporting portion of the optical fiber connecting tool of FIG. 1 together with the optical fiber connecting apparatus of FIG. 4;
7 is an enlarged perspective view showing a fiber holding portion of the optical fiber connecting tool of FIG. 1 together with an optical fiber. FIG.
8 is a perspective view showing a usage pattern of the optical fiber connecting tool of FIG. 1; FIG.
9 is a diagram showing a fiber temporary holding procedure by the optical fiber connecting tool of FIG. 1, (a-1; b-1) state before temporary holding, (a-2; b-2) holding member opened. The state in a position and (a-3; b-3) temporary holding state are shown, respectively.
10 is a perspective view showing a usage pattern of the optical fiber connecting tool of FIG. 1; FIG.
FIG. 11 is a plan view of an optical fiber connecting tool according to a modification.
FIG. 12 is a plan view of an optical fiber connecting tool according to another modification.
FIG. 13 is a plan view of an optical fiber connecting tool according to still another modification.
FIGS. 14A and 14B are cross-sectional views of an optical fiber connecting tool according to still another modification, in which (a) the holding member is in the closed position and (b) the holding member is in the open position.
FIGS. 15A and 15B are cross-sectional views of an optical fiber connecting tool according to still another modification, in which FIG. 15A shows a state where the holding member is in the closed position, and FIG. 15B shows a state where the holding member is in the open position.
FIG. 16 is a side view of an optical fiber connecting tool according to another embodiment of the present invention.
FIG. 17 is a diagram of a mounting portion according to a modification.
[Explanation of symbols]
10: Optical fiber connection tool
12 ... Optical fiber connection device
14 ... Base
16 ... Device support section
18 ... Fiber holding part
20 ... Extension
26, 72 ... holding member
28, 74 ... receiving groove
58, 76 ... Manual operation member
60 ... Supporting element
62 ... Operation elements
80 ... Mounting part
82 ... Notch

Claims (7)

基部と、該基部上に配置され、一対の光ファイバの素線同士を先端突き合わせ状態で接続可能な光ファイバ接続装置を支持する装置支持部と、該装置支持部から離間して該基部上に配置され、接続対象の光ファイバのそれぞれを個別に仮保持する複数のファイバ保持部とを具備する光ファイバ接続用工具において、
前記複数のファイバ保持部の各々は、
光ファイバを受容する開閉可能な受容溝を有する保持部材であって、該光ファイバに長手方向張力を実質的に加えることなく該光ファイバを該受容溝へ挿入できるようにする開位置と、該受容溝に挿入された光ファイバを挟持する閉位置との間で変位動作可能な保持部材と、
前記保持部材に連結され、該保持部材を前記開位置と前記閉位置との間で変位動作させるための手動操作部材とを具備し、
前記手動操作部材は、手動操作されない初期状態で前記基部の表面から平行に離隔して配置される操作要素を備えて、前記基部に片持ち梁式に固定され、
前記操作要素を前記初期状態から前記基部に接近する方向へ手動操作することにより、前記保持部材が前記閉位置から前記開位置へ変位動作すること、
を特徴とする光ファイバ接続用工具。
A base, a device support disposed on the base and supporting an optical fiber connecting device capable of connecting the strands of a pair of optical fibers in a tip end state, and spaced apart from the device support on the base In an optical fiber connecting tool comprising a plurality of fiber holding portions that are arranged and temporarily hold each of optical fibers to be connected individually,
Each of the plurality of fiber holding portions is
A holding member having an openable and closable receiving groove for receiving an optical fiber, the open position allowing the optical fiber to be inserted into the receiving groove without substantially applying longitudinal tension to the optical fiber; A holding member that can be displaced between a closed position for holding the optical fiber inserted in the receiving groove, and
A manual operation member coupled to the holding member for moving the holding member between the open position and the closed position ;
The manual operation member includes an operation element disposed in parallel with the surface of the base in an initial state where the manual operation is not performed, and is fixed to the base in a cantilever manner.
The holding member is displaced from the closed position to the open position by manually operating the operating element from the initial state toward the base .
An optical fiber connecting tool characterized by
前記手動操作部材は、前記保持部材を担持する弾性変形可能な担持要素と、該担持要素に一体的に連結され、手動操作力を該担持要素に伝達して該担持要素を弾性変形させる前記操作要素とを備え、該操作要素を前記基部に接近する方向へ手動操作したときに、該担持要素の弾性変形に伴い該保持部材が前記開位置へ変位動作し、該担持要素の弾性復元に伴い該保持部材が前記閉位置へ変位動作する請求項1に記載の光ファイバ接続用工具。Said manual operating member, an elastically deformable bearing elements carrying said holding member is integrally connected to said supported element, said operation to elastically and the carried element deforms to transmit the manual operating force to said supported element And when the operating element is manually operated in a direction approaching the base, the holding member is displaced to the open position along with the elastic deformation of the supporting element, and the elastic recovery of the supporting element is performed. The optical fiber connecting tool according to claim 1, wherein the holding member is displaced to the closed position. 前記手動操作部材が、前記基部に一体成形される請求項2に記載の光ファイバ接続用工具。It said manual operating member is an optical fiber connection tool according to claim 2 which is integrally molded to the base. 前記保持部材は、互いに一体に連結される一対の腕部分を有し、前記開位置と前記閉位置との間で変位動作する間に、該一対の腕部分の連結部位で弾性変形して前記受容溝を開閉する請求項1〜3のいずれか1項に記載の光ファイバ接続用工具。The holding member has a pair of arm portions that are integrally connected to each other , and elastically deforms at a connection portion of the pair of arm portions while performing a displacement operation between the open position and the closed position. The optical fiber connecting tool according to any one of claims 1 to 3, wherein the receiving groove is opened and closed. 前記基部は、手持操作を可能にする握持部分を備え、前記手動操作部材の前記操作要素が該握持部分に近接して配置され、該握持部分に、前記操作要素を操作する親指の付け根を沿わせることができる凹曲縁が形成される請求項1〜4のいずれか1項に記載の光ファイバ接続用工具。The base includes a gripping portion that enables a hand-held operation, and the operation element of the manual operation member is disposed in proximity to the gripping portion, and a thumb that operates the operation element is disposed on the gripping portion. optical fiber connection tool according to any one of claims 1 to 4, the concave curved edge Ru is formed which can be along the base. 前記基部に設けられ、該基部を、光ファイバ敷設現場に設置される板縁又は線状体へ搭載できるようにする搭載部をさらに具備し、該搭載部が、該基部の外側に突出しない凹状構造を有する請求項1〜5のいずれか1項に記載の光ファイバ接続用工具。The base is further provided with a mounting portion that allows the base to be mounted on a plate edge or a linear body installed at an optical fiber laying site , and the mounting portion does not protrude outside the base. The optical fiber connecting tool according to any one of claims 1 to 5, which has a structure. 基部と、該基部上に配置され、一対の光ファイバの素線同士を先端突き合わせ状態で接続可能な光ファイバ接続装置を支持する装置支持部と、該装置支持部から離間して該基部上に配置され、接続対象の光ファイバのそれぞれを個別に仮保持する複数のファイバ保持部とを具備する光ファイバ接続用工具において、
前記基部に設けられ、該基部を、光ファイバ敷設現場に設置される板縁又は線状体へ搭載できるようにする搭載部をさらに具備し、該搭載部が、該基部の外側に突出しない凹状構造を有することを特徴とする光ファイバ接続用工具。
A base, a device support disposed on the base and supporting an optical fiber connecting device capable of connecting the strands of a pair of optical fibers in a tip end state, and spaced apart from the device support on the base In an optical fiber connecting tool comprising a plurality of fiber holding portions that are arranged and temporarily hold each of optical fibers to be connected individually,
The base is further provided with a mounting portion that allows the base to be mounted on a plate edge or a linear body installed at an optical fiber laying site , and the mounting portion does not protrude outside the base. An optical fiber connecting tool characterized by having a structure.
JP2003127134A 2003-05-02 2003-05-02 Optical fiber connection tool Expired - Fee Related JP4544832B2 (en)

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