JPS60153005A - Connection part of optical fiber - Google Patents

Connection part of optical fiber

Info

Publication number
JPS60153005A
JPS60153005A JP911884A JP911884A JPS60153005A JP S60153005 A JPS60153005 A JP S60153005A JP 911884 A JP911884 A JP 911884A JP 911884 A JP911884 A JP 911884A JP S60153005 A JPS60153005 A JP S60153005A
Authority
JP
Japan
Prior art keywords
optical fiber
fiber cable
core
room temperature
grease
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP911884A
Other languages
Japanese (ja)
Inventor
Eiji Iri
井利　英二
Junichi Ueda
順一 上田
Takeshi Shintani
健 新谷
Kotaro Mio
三尾　興太郎
Yasuo Ijiri
井尻　康夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dainichi Nippon Cables Ltd
Original Assignee
Dainichi Nippon Cables Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dainichi Nippon Cables Ltd filed Critical Dainichi Nippon Cables Ltd
Priority to JP911884A priority Critical patent/JPS60153005A/en
Publication of JPS60153005A publication Critical patent/JPS60153005A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables
    • G02B6/4428—Penetrator systems in pressure-resistant devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To eliminate the entry of water by charging a filler which has specific characteristics in the circumferential space of a part peeled off a coating material including the coupling part of an optical fiber and a gap communicating with the circumferential space. CONSTITUTION:A multi-core optical fiber cable and numbers of single-core optical fiber cords 12 are bundled together. A reinforcing sleeve 13, tube 14, tension member 15, and protection sleeve 16 are provided; plural coating members at an end part of the optical fiber cable 11 are cut to expose optical fiber multi-core units covered with a pressure wound tape 11n, and the coating member of each unit including its pressure wound tape 11n is cut to expose optical fibers 11a, 11b... to necessary length. Fillters 14a and 19 use grease itself or after moisture absorbing additives are mixed, and the grease is soft at room temperature and has 85-475, preferably, 120-400 worked penetration measured on ASTMD-217 basis at room temperature.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は主として光フアイバケーブル同士、複数本の光
フアイバコード同士、或いは光フアイバケーブルと複数
本の光フアイバコードとの接続部に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention mainly relates to connections between optical fiber cables, between a plurality of optical fiber cords, or between an optical fiber cable and a plurality of optical fiber cords. .

〔従来技術〕[Prior art]

一般に多芯光ファイバケーブルと夫々に各種の機器に繋
がる複数本の単芯光フアイバコードとを接続する場合、
光フアイバケーブル、光フアイバコードの被覆部材を切
り取って所要長の光ファイバを剥ぎ出して光ファイバの
端面同士を結合するが、このような接続部の機械的強度
、防水、防湿性、気密性を確保する方法として、例えば
第１図に示す如き技術が知られている（特公昭５８−４
５６８５号）。第１図は従来の接続部を示す部分破砕図
であり、図中１は多芯の光フアイバケーブル、２はいず
れも単芯の光フアイバコードを示している。Generally, when connecting a multi-core optical fiber cable and multiple single-core optical fiber cords each connected to various devices,
The end faces of the optical fibers are joined by cutting the covering material of the optical fiber cable or optical fiber cord and stripping out the required length of optical fiber. For example, the technique shown in Figure 1 is known as a method for securing the
No. 5685). FIG. 1 is a partially exploded view showing a conventional connection part, in which numeral 1 indicates a multi-core optical fiber cable, and numeral 2 indicates a single-core optical fiber cord.

光フアイバケーブル１１各光フアイバコード２からは夫
々被覆部材を切り取って所要長の光ファイバｌａ、　ｌ
ｂ・・・、２ａ、２ｂ・・・の端部を剥ぎ出し、光ファ
イバｌａ、２ａ等はその端面同士を芯合わせ結合し、各
結合部には補強スリーブ３ａ、３ｂ・・・を外嵌固定し
である。また補強スリーブ３ａ、３ｂ・・・と各光フア
イバコード２の端部とにわたして各光フアイバコード２
から剥ぎ出した光ファイバ２ａ、２ｂ・・・を覆ってビ
ニール製のチューブ４を被せ、各光フアイバコード２の
端末からコード内部を通り接続面内への湿気、水等の侵
入を防止すると共に、光ファイバを剥ぎ出した光フアイ
バコード２の端部近傍は光ファイバコード２全部を集束
した状態で合成樹脂により団結させて固定部５を形成し
、この固定部５と光フアイバケーブル１の端部とに筒状
のサポータ６を渡して光フアイバケーブル１、光ファイ
ハコ−１′２の被覆部利端部、テンションメンバ７、光
ファイバｌａ、２ａ等の剥ぎ出し基部を覆い、更にこの
サポータ６、光ファイバｌａ、２ａ・・・、補強スリー
ブ３ａ、３ｂ・・・を覆って光フアイバケーブル１から
固定部５にわたして保護スリーブ８ａ、８ｂを被せ、保
護スリーブ８ａ、８ｂ端部から光フアイバケーブル１、
固定部５にわノこして、また保護スリーブ８ａ、８ｂの
山き合−Ｌ部にわたして、夫々テープ状シール材９ａ、
９ｂ、９ｃを巻着し、保護スリーブ８ａ、Ｂｂ内を気密
状態とし、内部に乾燥ガスを注入して水、湿気の侵入を
防止するようにしである。Optical fiber cable 11 The coating material is cut off from each optical fiber cord 2 to create optical fibers la, l of required length.
The ends of b..., 2a, 2b... are stripped, and the end surfaces of optical fibers la, 2a, etc. are aligned and coupled together, and reinforcing sleeves 3a, 3b... are externally fitted to each coupling part. It is fixed. In addition, each optical fiber cord 2 is passed between the reinforcing sleeves 3a, 3b, . . .
A vinyl tube 4 is placed over the optical fibers 2a, 2b, etc., which have been stripped from the fibers, to prevent moisture, water, etc. from entering from the terminal of each optical fiber cord 2 through the inside of the cord and into the connecting surface. Near the end of the optical fiber cord 2 from which the optical fibers have been stripped, all the optical fiber cords 2 are bundled and united with synthetic resin to form a fixed part 5, and the fixed part 5 and the end of the optical fiber cable 1 are connected together. A cylindrical supporter 6 is passed between the parts to cover the exposed bases of the optical fiber cable 1, the coated end of the optical fiber box 1'2, the tension member 7, the optical fibers la, 2a, etc., and the supporter 6 , the optical fibers la, 2a..., reinforcing sleeves 3a, 3b... are covered with protective sleeves 8a, 8b extending from the optical fiber cable 1 to the fixed part 5, and the optical fibers are inserted from the ends of the protective sleeves 8a, 8b. cable 1,
Tape-shaped sealing materials 9a, 9a and 9a are applied to the fixing portion 5 and across the L portions of the protective sleeves 8a and 8b, respectively.
9b and 9c are wrapped around each other to make the inside of the protective sleeve 8a and Bb airtight, and dry gas is injected into the inside to prevent water and moisture from entering.

ところでこのような従来方法では各光フアイバコート２
の端部近傍を束ねて合成４４４脂によりモールドする構
成となっているため、各光フアイバコード２間の隙間を
封止し得る反面、各光フアイバコード２を集束状態に団
結するために合成樹脂を光フアイバコード２を配した型
内に注入して固化せしめる必要があり、合成樹脂の固化
過程では収縮を避けることが出来ず、各光フアイバコー
ド２の光ファイバにマイクロヘンドを発生させて光伝送
損失を著しく増大させ、また亀裂が発生し易く、湿気の
侵入を招くこともあるなどの問題があり、更にガス保守
が煩雑であるばかりでなく、接続面を気密構造にしなけ
ればならないため、接続面のニストアンプを避けられな
いという問題もあった。By the way, in such a conventional method, each optical fiber coat 2
Since the ends of the optical fiber cords 2 are bundled together and molded with synthetic 444 resin, the gaps between each optical fiber cord 2 can be sealed. It is necessary to inject the resin into a mold in which the optical fiber cords 2 are placed and allow it to solidify, and shrinkage cannot be avoided during the solidification process of the synthetic resin, causing microhends in the optical fibers of each optical fiber cord 2. There are problems such as significantly increasing optical transmission loss, cracks are likely to occur, and moisture may enter.Furthermore, gas maintenance is complicated, and the connection surface must be made airtight. There was also the problem of unavoidable noise amplifiers on the connection side.

〔目　的〕〔the purpose〕

本発明はかかる事情に鑑みなされたものであって、その
目的とするところは光ファイバの被覆部材と保護スリー
ブとの間の間隙、及び／又は光ファイバとその被覆部材
との間の隙間等被覆部祠から剥ぎ出した光ファイバの周
囲空間に連なる隙間内に、稠性を有する充填材を充填し
て光ファイバにマイクロヘンドを生じさセることなく、
しかも確実な防水機能を得られるようにした光ファイバ
の接続部を提供するにある。The present invention has been made in view of the above circumstances, and its purpose is to cover the gap between the optical fiber coating member and the protective sleeve, and/or the gap between the optical fiber and its coating member. By filling the gap connected to the surrounding space of the optical fiber stripped from the shank with a filler having consistency, without causing microhends in the optical fiber,
Moreover, it is an object of the present invention to provide an optical fiber connection part that can provide a reliable waterproof function.

〔構　成〕〔composition〕

光ファイバの結合部及びこれに連なる被覆部材からｑ１
■ぎ出されている部分の光ファイノＸの周囲空間内、又
は該周囲空間を通して被覆部材内への水分の侵入を防止
すべく、周囲空間に通ずる空隙中に、ＡＳＴＭＤ〜２１
７で測定した常温におりる混和稠度が８５〜４７５の充
填材を充填したことを特徴とする。q1 from the optical fiber coupling part and the covering member connected thereto
(2) In order to prevent moisture from entering into the surrounding space of the optical fin
It is characterized by being filled with a filler having a mixing consistency of 85 to 475 at room temperature as measured in No. 7.

〔実施例〕〔Example〕

以下本発明を多芯の光フアイバケーブルと小芯の光フア
イバコートとの接続部に適用した構成につき具体的に説
明する。第２図は本発明に係る光ファイバの接続部（以
下本発明接続部という）を示す部分破砕図であり、図中
１１は多芯の光フアイバケーブル、１２はいずれも単芯
の光フアイバコードであって多数本を束ねである。１３
は補強スリーブ、１４はチューブ、１５はテンションメ
ンバ、１６は保護スリーブを示している。光ファイハゲ
ープル１１の端部はその複数の？ｔｉ　＋ｖ　ｆｆｉ　
’ｒＡを切り取って夫々押え巻きテープｌｌｎを被った
光ファイバ多芯ユニットを所要長剥ぎ出し、更に各ユニ
ットはその押え巻きテープｌｌｎを含む被覆部材を切り
取って夫々光ファイバｌｌａ、　ｌｌｂ・・・を所要長
剥ぎ出し、一方各光フアイバコード１２はその被覆部材
を切り取って所要長の光ファイバ１２ａ、１２ｂ・・・
を剥ぎ出し、各光ファイバ１１ａ＋１２ａ　、１１ｂ＋
１２ｂ　、はその端面同士を相互に芯合わせした状態で
溶融結合され、各結合部は補強スリーブ１３を外嵌した
状態で一体に固定され、また相互のテンションメンバ１
５も何らかの手段により接続面内に固定されており、こ
の構成は第１図に示す従来の構成と略同じである。Hereinafter, a configuration in which the present invention is applied to a connection portion between a multi-core optical fiber cable and a small-core optical fiber coat will be specifically explained. FIG. 2 is a partially exploded view showing a connecting part of an optical fiber according to the present invention (hereinafter referred to as the connecting part of the present invention), in which 11 is a multi-core optical fiber cable, and 12 is a single-core optical fiber cord. It is a bundle of many books. 13
14 is a reinforcing sleeve, 14 is a tube, 15 is a tension member, and 16 is a protective sleeve. The ends of the optical fiber cable 11 are connected to the plurality of ends. ti+vffi
'rA is cut and each optical fiber multi-core unit covered with a pressure winding tape lln is stripped out to a required length, and the covering member including the pressure winding tape lln is cut off from each unit to form optical fibers lla, llb, etc., respectively. The required length of each optical fiber cord 12 is stripped, and the coating material of each optical fiber cord 12 is cut off to form optical fibers 12a, 12b, etc. of the required length.
Strip out each optical fiber 11a+12a, 11b+
12b are melt-bonded with their end surfaces aligned with each other, and each joint is fixed integrally with a reinforcing sleeve 13 fitted on the outside, and each tension member 1
5 is also fixed within the connecting surface by some means, and this configuration is approximately the same as the conventional configuration shown in FIG.

各光フアイバケーブルｌｌから剥ぎ出しであるユニメト
にはその押え巻きテープｌｌｎに、該押え巻きテープｌ
ｌｎから光ファイバｌｌａ、ｌｌｂ・・・にわたるよう
ムこ、また各光フアイバコート１２の被覆部材にはこの
被覆部材から光ファイバ１２ａ、１２ｂ・・・にわたる
ように合成樹脂製のチューブ１４を外嵌し、夫々チュー
ブ１４内に充填材１４ａを注入して押え巻きテープＩｌ
ｎと光ファイバｌｌａ、ｌｌｂ・・・との間の間隙及び
被覆部材と光ファイバ１２ａ、１２ｂ・・・との間の間
隙を水密封止せしめである。充填材１４ａは後述する如
くグリース又はこれに水分吸収剤を混入せしめた稠性を
有する物質である。For Unimet, which is exposed from each optical fiber cable ll, attach the presser winding tape ln to the presser winding tape ln.
A tube 14 made of synthetic resin is fitted onto the covering member of each optical fiber coat 12 so as to extend from the covering member to the optical fibers 12a, 12b, . . . Then, filler material 14a is injected into each tube 14, and the tape Il is pressed and wound.
The gaps between N and the optical fibers lla, llb, . . . and the gaps between the coating member and the optical fibers 12a, 12b, . The filler 14a is a viscous substance made of grease or a moisture absorbent mixed therein, as will be described later.

保護スリーブ１６は金属製で円筒状に形成され、中間部
は大径に、両端部は夫々光フアイバケーブル１１、束ね
た状態の光フアイバコード１２の各直径よりも若干大き
い程度に縮径し、この各縮径した両端の円筒部１６ａ、
　１６ｂの内端側周面にば夫々内鍔１６ｃを備えている
。The protective sleeve 16 is made of metal and has a cylindrical shape, with a large diameter at the middle part and a reduced diameter at both ends to be slightly larger than the respective diameters of the optical fiber cable 11 and the bundled optical fiber cord 12. The cylindrical portions 16a at both ends are each reduced in diameter,
An inner collar 16c is provided on the inner circumferential surface of each of the inner flanges 16b.

保護スリーブ１６は光ファイバｌｌａ、　ｌｌｂ、　Ｉ
ｌｃ・・・、１２ａ、　ｉ２ｂ、　１２ｃ・・・及びこ
れらの結合部に固定した補強スリーブ１３、チューブ１
４を覆った状態で一端側の円筒部１６ａは光フアイバケ
ーブル１１の端部外周に、また他端例の円筒部１６．Ｊ
＋は束ねた状態の光フアイバコード１２の端部外周に夫
々外嵌されている。The protective sleeve 16 protects the optical fibers lla, llb, I
lc..., 12a, i2b, 12c... and the reinforcing sleeve 13 and tube 1 fixed to their joints
4, the cylindrical portion 16a at one end is attached to the outer periphery of the end of the optical fiber cable 11, and the cylindrical portion 16a at the other end is attached to the outer periphery of the end of the optical fiber cable 11. J
+ is fitted around the outer periphery of the end of the bundled optical fiber cord 12, respectively.

光フアイバケーブル１１、束ねた光フアイバコード１２
の外周には夫々軸長方向に所要の間隔を隔てて一対の鍔
１７ａ、１７ｂ　、　１８ａ、１８ｂを外嵌固定してあ
り、前記保護スリーブ１６の両回筒部１６ａ、１６ｂは
夫々鍔１７ａ、１７ｂ　、１８ａ、１８ｂにわたるよう
外嵌され、内鍔１６ｃ、　１６ｃを鍔１７ｂ、　１８ｂ
に突き当てた状態で接着剤を用いて相互に固定されてい
る。Optical fiber cable 11, bundled optical fiber cord 12
A pair of flanges 17a, 17b, 18a, 18b are fitted and fixed on the outer periphery of each of the protective sleeves 17a, 17b, 18a, 18b at a required interval in the axial direction. 17b, 18a, 18b, and the inner tsuba 16c, 16c is fitted over the tsuba 17b, 18b.
They are fixed to each other using adhesive while facing each other.

鍔１７ａ、１７ｂ　、１８ａ、１８ｂはいずれも合成樹
脂製であって、円盤状をなし、その中心部には光フアイ
バケーブル１１、束ねた状態の光フアイバコード１２の
直径と略等しい６孔１７ｃ、　１８ｃを備え、この６孔
１７ｃ、　１８ｃを光フアイバケーブル１１、束ねた状
態の光フアイバコード１２に挿通し、接着剤にて各被覆
部材に固定されている。なおこの鍔１７ａ、　１７ｂ、
１８ａ、　１８ｂは狭幅のテープを夫々光フアイバケー
ブル１１、束ねた光フアイバコード１２に重複して巻回
せしめることによって形成してもよい。The collars 17a, 17b, 18a, and 18b are all made of synthetic resin and have a disk shape, and in the center thereof there are six holes 17c that are approximately equal to the diameter of the optical fiber cable 11 and the optical fiber cord 12 in the bundled state. 18c, and the optical fiber cable 11 and the bundled optical fiber cord 12 are inserted through these six holes 17c and 18c, and fixed to each covering member with an adhesive. Furthermore, this guard 17a, 17b,
The tapes 18a and 18b may be formed by wrapping narrow tapes around the optical fiber cable 11 and the bundled optical fiber cord 12, respectively.

そして両鍔１７ａ、１７ｂ　、　１８ａ、１８ｂ及び保
護スリーブ１６の円筒部１６ａ、　１６ｂで周囲を囲わ
れた空間内にはこれらの空間及び光フアイバコード１２
相互の間の空隙内軒充填材１９が各円筒部１６ａ、１６
ｂに穿った孔１６ｄ、１６ｄを通して注入充填されてい
る。２０ａ　、　２０ｂは各円筒部１６ａ、　１６ｂと
光フアイバケーブル１１、束ねた状態の光フアイバコー
ド１２との間の隙間を封止すべく巻着したテープである
。なお保護スリーブ１６内には乾燥空気が存在するのみ
である。These spaces and the optical fiber cord 12 are enclosed within the space surrounded by the flanges 17a, 17b, 18a, 18b and the cylindrical portions 16a, 16b of the protective sleeve 16.
The eave filling material 19 in the gap between each cylindrical portion 16a, 16
It is injected and filled through holes 16d, 16d drilled in b. Tapes 20a and 20b are wound to seal the gaps between the cylindrical portions 16a and 16b, the optical fiber cable 11, and the bundled optical fiber cord 12. Note that only dry air exists within the protective sleeve 16.

前述した充填物１４ａ　、１９としては常温で軟らかい
グリース単独又はこれに吸水性添加剤を混入したもので
あって、ＡＳＴＭＤ−２１７で測定した常温での混和稠
度が８５〜４７５、望ましくは１２０〜４００程度のも
のが用いられる。混和稠度を８５〜４７５としたのは８
５以下ではかた過ぎて充填作業のために高温度に加熱し
て流動性を増大させる必要があり、冷却過程で体積収縮
を伴い光ファイバにマイクロヘントを生しさせることと
なるからである。また混和稠度が４７５より大きいと、
流動性が過大となり接続部を傾斜さ−Ｕたとき、流動し
て空隙が形成され水密封止機能をｔｆ４”Ｌうおそれが
あることによる。The aforementioned fillers 14a and 19 are greases that are soft at room temperature alone or mixed with water-absorbing additives, and have a mixing consistency at room temperature of 85 to 475, preferably 120 to 400, as measured by ASTM D-217. A certain degree is used. The mixing consistency was 85 to 475.
If it is less than 5, it will be too hard and it will be necessary to increase the fluidity by heating it to a high temperature for the filling operation, and the cooling process will cause volume contraction and cause microhents in the optical fiber. Also, if the mixing consistency is greater than 475,
This is because when the fluidity becomes excessive and the connection part is tilted, the fluid may flow and form voids, which may impair the watertight sealing function.

使用グリースとし°ζは例えばポリウレアグリース、リ
チウム石りんグリース、カルシウム石けんグリース、ア
ルミニウム石りんグリース、ベントングリース、複合ア
ルミニウム石けんグリース、複合カルシウム石けんグリ
ース等が用いられる。Examples of the grease used include polyurea grease, lithium phosphorus grease, calcium soap grease, aluminum phosphorus grease, benton grease, composite aluminum soap grease, and composite calcium soap grease.

また吸水性添加剤としてはアクリル酸性デンプン等のデ
ンプン−グラフト重合体、カルボキシメチルセルロース
、アクリルＭ重合体等の有機吸水性物質、シリカゲル、
生石灰等無機吸水性物質が用いられる。勿論グリース、
吸水性添加剤としては何ら上述のものにのみ限るもので
はなく、従来知られたものを適宜採択してよい。In addition, water-absorbing additives include starch-graft polymers such as acrylic acid starch, organic water-absorbing substances such as carboxymethyl cellulose and acrylic M polymer, silica gel,
Inorganic water-absorbing substances such as quicklime are used. Grease, of course.
The water-absorbing additive is not limited to those mentioned above, and any conventionally known additives may be used as appropriate.

上述の如く構成した本発明に係る接続部について保護ス
リーブ１６の中央に孔を穿ち、ここにポリエチレン管を
接続し、１０００鶴の高さに進水を満たして１４日間放
置し、外部への漏水の有無を検査したが漏水は全くみら
れなかった。なお接続部の長さは８５０鳳鳳である。For the connection part according to the present invention constructed as described above, a hole is made in the center of the protective sleeve 16, a polyethylene pipe is connected thereto, and the water is filled to a height of 1,000 yen and left for 14 days to prevent water from leaking to the outside. I checked for the presence of water, but no water leakage was found. Note that the length of the connecting portion is 850 mm.

上述の実施例は多芯の光フアイバケーブルと複数の単芯
光フアイバコードとの接続部の構成につき説明したが、
複数の単芯又は複芯の光フアイバコード同士の接続部、
或いは光ファイバと動力線等の電気用導線との複合ケー
ブルと光フアイバコード、光フアイバケーブル、電気１
コード、電気ケーブルとの接続部等にも適用し得ること
は勿論である。In the above embodiment, the structure of the connecting portion between a multi-core optical fiber cable and a plurality of single-core optical fiber cords has been described.
Connections between multiple single-core or multi-core optical fiber cords,
Or a composite cable of optical fiber and electrical conductor such as power line, optical fiber cord, optical fiber cable, electricity 1
Of course, the present invention can also be applied to connection parts with cords, electric cables, etc.

実施例では保護スリーブ１６の両端における円筒部１６
ａ、　ＪＧｂ内に夫々充填材１９を注入する構成を説明
したが、片側は他の構成としてもよい。In the embodiment, the cylindrical portions 16 at both ends of the protective sleeve 16
Although the configuration in which the filler 19 is injected into each of a and JGb has been described, one side may have another configuration.

以上の如く本発明接続部にあっては相互に結合すべく、
被覆部材から剥ぎ出した光ファイバの周囲空間内又は光
ファイバと被覆部材との間への水／７３の侵入を防止す
べく周囲空間に通じる空隙中に稠性を有する充填材を注
入せしめることとしたから、充填作業が容易となり、体
禎収縮がなく、また常温でやわらかいから、光ファイバ
にマイクロヘンドを生じさせることがなく、更に充填物
に亀裂が発生しないからこの亀裂を通しての水分の侵入
のおそれも全くない。そのうえ充填材は柔らかいため補
修作業等に際しても作業能率がよいなどの効果もある。As described above, in the connecting portion of the present invention, in order to connect to each other,
In order to prevent water/73 from entering into the space surrounding the optical fiber stripped from the coating member or between the optical fiber and the coating member, a filler having consistency is injected into the gap communicating with the surrounding space. Therefore, the filling process is easy, there is no physical shrinkage, and since it is soft at room temperature, it does not cause microhends in the optical fiber, and there are no cracks in the filling, which prevents moisture from entering through the cracks. There is no fear at all. Furthermore, since the filler is soft, it also has the effect of improving work efficiency during repair work and the like.

また接続面そのものを気密構造にする必要がないため、
保守が簡単であるばかりでなく、安価な接続面が構成出
来る。Also, since there is no need to make the connection surface itself airtight,
Not only is maintenance easy, but inexpensive connection surfaces can be constructed.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の光ファイバの接続部を示す部分破砕図、
第２図は本発明に係る光ファイバの接続部を示す部分破
砕図である。 １１・・・光フアイバケーブル　Ｉｌａ、１１ｂ、１１
ｃ・・・光ファイバ　１２・・・光フアイバコード　１
２ａ、　１２ｂ、　１２ｃ・・・光ファイバ１３・・・
補強スリーブ　１４・・・チューブ１４ａ・・・充填材
１５・・・テンションメンバ　１６・・・保護スリーブ
　Ｉ（ｉａ、１６ｂ・・・円筒部　１６ｃ・・・内Ｈ１
７ａ、１７ｂ　５１８ａ、１８ｂ　・＝＆Ｗ　１９−充
填材時　許　出願人　大日日本電線株式会社代理人　弁
理士　河　野　登　夫Figure 1 is a partially exploded view showing the connection part of a conventional optical fiber.
FIG. 2 is a partially exploded view showing a connecting portion of an optical fiber according to the present invention. 11... Optical fiber cable Ila, 11b, 11
c... Optical fiber 12... Optical fiber cord 1
2a, 12b, 12c...optical fiber 13...
Reinforcement sleeve 14...Tube 14a...Filler 15...Tension member 16...Protective sleeve I (ia, 16b...Cylindrical portion 16c...Inner H1
7a, 17b 518a, 18b ・=&W 19-When filling material Applicant Dainichi Nippon Cable Co., Ltd. Agent Patent attorney Noboru Kono

Claims (1)

【特許請求の範囲】 １、光ファイバの結合部を含む、被覆部材から剥ぎ出さ
れている部分の周囲空間内、又は該周囲空間を通じて被
覆部材内への水分の侵入を防止すべく、周囲空間に通ず
る空隙中をＡＳＴＭＤ−２１７で測定した常温におりる
混和稠度が８５〜４７５の充填材で充填したことを特徴
とする光ファイバの接続部。 ２、前記充填材は吸水性添加剤を含む特許請求の範囲第
１項記載の光ファイバの接続部。[Claims] 1. In order to prevent moisture from entering into the covering member through the surrounding space of the exposed part of the covering member, including the optical fiber coupling part, or through the surrounding space, the surrounding space is 1. A connecting portion of an optical fiber, characterized in that a gap leading to the fiber is filled with a filler having a mixing consistency at room temperature of 85 to 475 as measured by ASTM D-217. 2. The optical fiber connection portion according to claim 1, wherein the filler contains a water-absorbing additive.
JP911884A 1984-01-20 1984-01-20 Connection part of optical fiber Pending JPS60153005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP911884A JPS60153005A (en) 1984-01-20 1984-01-20 Connection part of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP911884A JPS60153005A (en) 1984-01-20 1984-01-20 Connection part of optical fiber

Publications (1)

Publication Number Publication Date
JPS60153005A true JPS60153005A (en) 1985-08-12

Family

ID=11711715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP911884A Pending JPS60153005A (en) 1984-01-20 1984-01-20 Connection part of optical fiber

Country Status (1)

Country Link
JP (1) JPS60153005A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932744A (en) * 1988-10-04 1990-06-12 Communications Technology Corporation Closure for optical fiber splice connectors
EP0517417A2 (en) * 1991-06-01 1992-12-09 Nortel Networks Corporation Cable joints and terminations
EP1703308A1 (en) * 2005-03-16 2006-09-20 Institut Français du Pétrole Device with hermetic feed-through for optical fibre

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932744A (en) * 1988-10-04 1990-06-12 Communications Technology Corporation Closure for optical fiber splice connectors
EP0517417A2 (en) * 1991-06-01 1992-12-09 Nortel Networks Corporation Cable joints and terminations
EP1703308A1 (en) * 2005-03-16 2006-09-20 Institut Français du Pétrole Device with hermetic feed-through for optical fibre
FR2883385A1 (en) * 2005-03-16 2006-09-22 Inst Francais Du Petrole SEALED CROSSING DEVICE FOR OPTICAL FIBER
US7400811B2 (en) 2005-03-16 2008-07-15 Institut Francais Du Petrole Sealed feedthrough assembly for optical fiber

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