JPS5981611A - Reinforcing tool for optical fiber connection part - Google Patents

Abstract

PURPOSE:To simplify reinforcing operation and to prevent an optical fiber connection part from deforming after reinforcement by using a reinforcing tool which has an internal layer which has heat fusibility and/or cohesiveness to the internal circumferential surface of a cylinder member made of heat-shrinkable fluororesin to specific thickness. CONSTITUTION:The reinforcing tool 40 is inserted from heat-sealed optical fibers 10 and 11 to coating internal end parts 20a and 21a and in this state, they are heated by using a heater such as a drier. Heating temperature is, for example, 150-180 deg.C and heating time is about 30sec; the cylinder member 41 shrinks radially by the heat treatment. The internal layer member 42 is fused by the heating and the shrinkage force of the cylinder member 41 and flows and centralizes to the optical fibers 10 and 11 to be adhered to the optical fibers 10 and 11 and coating internal end parts 20a and 21a. Consequently, the internal space of the cylinder member 41 is charged completely with the internal layer member 42.

Description

【発明の詳細な説明】 （１）　　発明の技術分野 本発明は元ファイバ接続部の補強用具に係９、特に融層
法によって接続された元ファイバ接続部の補強用具に関
するものである０ （２）技術の背景 一般に元ファイバは、保強、強度等の理由から、外周が
被覆きれて使用式れる。従って、元ファイバ同士を接続
する場合は、この被覆を取り除＠元ファイバ全所定長だ
けむき出しにして、このむき出し、部分が接続される。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a reinforcing tool for connecting portions of original fibers9, and particularly to a reinforcing tool for connecting portions of original fibers spliced by the fusion layer method. ) Technical background Generally, original fibers are used after the outer periphery is completely coated for reasons such as reinforcement and strength. Therefore, when connecting the original fibers, this coating is removed and only a predetermined length of the entire original fiber is exposed, and this exposed portion is connected.

第１図はこのようにして元ファイバ同士′ｆｆ：接続し
た状態全示す図である。FIG. 1 is a diagram showing the state in which the original fibers are connected to each other in this manner.

同図において、符号１０．１１はブＣファイバをそれぞ
れ示し、１２は熱融着部、２０．２１はそれぞれ元ファ
イバ１０．１１の被覆金示す。このようにしてむき出し
にされ接続された被８！２０．２１相聞の元ファイバ１
０．１１は、前述の如く保強、強度等の理由から補強す
る必要がある。この補強は、一般に、そ１１強用具ケ、
元ファイバ１０．１１から被覆２０．２１の内端部２０
ａ、２１ａにわたって、装着することにより行なわれる
０補強援のｙｅ７アイバ１０，１１が屈折又は湾曲状等
に変形して保持されると早期破断等の好ましくない原因
金もたらすことになる。従って、この種の補強用具Ｃよ
、補強作業が簡単で、補強後の元ファイバ１０．１１が
一直線上に整合して保持され得るものが好゛ましい。In the same figure, reference numerals 10.11 and 10.11 each indicate a C-fiber, 12 and 20.21 respectively indicate a heat-sealed portion and a coating metal of the original fiber 10.11, respectively. 8 exposed and connected in this way! 20.21 original fiber 1
0.11 needs to be reinforced for reasons such as reinforcement and strength as described above. This reinforcement is generally used for
Inner end 20 of coating 20.21 from original fiber 10.11
If the ye7 eyelids 10, 11, which are reinforced by being attached, are held in a bent or curved shape over the sections a and 21a, it will cause undesirable causes such as early breakage. Therefore, it is preferable that this type of reinforcing tool C is one that allows easy reinforcing work and can hold the original fibers 10, 11 aligned in a straight line after reinforcing.

（３）従来技術と問題点 第２図と第３図は従来の元ファイバ接続部の補強用具の
説明図である０第２図は補強用具の斜視図、＠３図は元
ファイバ１０．１１の補強が児了した状態を示す長手方
向の縦断面図である。両図において、符号３０は補強用
具本体１．．３１は天蓋、３２はシリコン系の樹脂をそ
れぞれ示す。補強用具本体３０は、ＦＲＰ（ガラス補強
プラスチック）等の材＠からＵ形断面に形成され、その
中央部に、接続された元ファイバ１０．１１を挿着する
ための長溝３０ａが長手方向に沿って設けられている。(3) Prior art and problems Figures 2 and 3 are explanatory diagrams of a conventional reinforcement tool for connecting the original fiber. 0 Figure 2 is a perspective view of the reinforcement tool, and Figure 3 shows the original fiber 10.11. FIG. 3 is a longitudinal cross-sectional view showing a state in which reinforcement has been completed. In both figures, reference numeral 30 indicates the reinforcing tool main body 1. ．． 31 represents a canopy, and 32 represents a silicon resin. The reinforcing tool main body 30 is formed from a material such as FRP (glass reinforced plastic) to have a U-shaped cross section, and a long groove 30a for inserting the connected original fiber 10.11 is formed in the center along the longitudinal direction. It is provided.

この補強用具による補強作業の手順は、予め接続された
元ファイバ１０，１ｌｔ−長溝３０ａに挿着し、次に本
体３０内側の窒間部にシリコン系の樹脂をχ有し、しか
る後に天蓋３１’に本体３０の上部に被着して終了する
。しゆしながら、この従来の補強用具には次のような問
題点がある。The procedure for reinforcing work with this reinforcing tool is to insert the original fibers 10, 1lt connected in advance into the long grooves 30a, then apply silicone resin to the inner part of the main body 30, and then attach the canopy 31. ' and then it is attached to the upper part of the main body 30. However, this conventional reinforcing tool has the following problems.

（イ）シリコン系樹脂３２の充填作業に手間がかかり、
かつ、個々の作業者によって、この充填状態の差異が生
じ易く、このため補強部の均一性、安定性にばらつきが
生ずる場合が多い。(a) Filling the silicone resin 32 is time consuming;
In addition, differences in the filling state tend to occur depending on the individual operator, which often results in variations in the uniformity and stability of the reinforcing portion.

（ロ）充填後におけるシリコン系樹脂３２の硬化時間が
長いため、元ファイバの配線作業−余分な時間がかかる
（樹脂３２が硬化するｌで、みだりに補強部を動かすこ
とができない）０ （ハ）接着剤としてのシリコン系樹脂３２の青鹿が煩雑
である。Ｔなわち、シリコン樹脂の混合の均一性、ある
いはｌ赦峻化形シリコン樹脂全便用する場合は大気中の
湿度等に対する樹脂′庁丹土の問題に常に留意１−る必
要がある。(B) Because the silicone resin 32 takes a long time to harden after filling, it takes extra time to wire the original fiber (the reinforcing part cannot be moved unnecessarily while the resin 32 hardens)0 (C) The use of silicone resin 32 as an adhesive is complicated. In other words, it is necessary to always pay attention to the uniformity of mixing of the silicone resin, or to the problem of the resistance of the resin to atmospheric humidity, etc. when using a completely ameliorated silicone resin.

（４）発明の目的 本発明の目的は、上記従来技術の問題点に鑑み、補強作
業が簡単で、しかも補強後における元ファイバ接続部が
変形（屈折、湾曲等）することなく均一で安定した補強
がり能な光フアイバ従続部の一？ｍ強用具を提供するこ
とにある。(4) Purpose of the Invention In view of the above-mentioned problems of the prior art, the purpose of the present invention is to simplify the reinforcing work and to ensure that the original fiber connection portion after reinforcement is uniform and stable without being deformed (bending, curving, etc.). One of the fiber optic follower parts that can be reinforced? Our goal is to provide the most powerful tools.

（５）発明の得成 そして、この目的を達成するために、本発明に依れば、
熱収縮性金有するふっ素糸樹脂から円筒状に形成された
円筒部材と、該円筒部材の内側周面に所だ厚さをもって
展着された熱溶融性及び（もしくは）粘着性金石する内
層部材とから成ること全特徴とする光フアイバ従続部の
補強用具が提供される。(5) Obtaining the invention And in order to achieve this objective, according to the present invention,
A cylindrical member formed into a cylindrical shape from a fluorine thread resin containing heat-shrinkable gold, and an inner layer member made of heat-fusible and/or adhesive goldstone spread to a certain thickness on the inner peripheral surface of the cylindrical member. A fiber optic trailing reinforcement device is provided comprising the following features:

（６）発明の実施例 以下、本発明の実施例を図面に基づい、て詳細に説明す
る。(6) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail based on the drawings.

゛第４図力・ら第７図は不発りの実施例を説明するため
の図である〇 第４図に本発明の光ファイバ接＆、部の補強用具４０全
示す。この補強用具４０は、円筒状に形成された円筒部
材４１と、該円筒部材４１の内側周面に所定厚爆音もっ
て展着された内層部材４２とからなる。円筒部材４１は
熱収縮性を有するぶつ累系樹脂、例えば、４ふっ化エチ
レン樹脂、４ふつ化エチレン−６ぶつ化プロピレン共重
合樹脂、パーフルオロアルコキシ基の側鎖’ｌする４ふ
っ化エチレン樹脂、エチレン−４ふり化エチレン共重合
樹脂、ふり化ビニリデン樹脂、又はこれ４らの樹脂に放
射線熱を行なってポリマー分子間を架橋した樹脂等から
形成される。これらの樹脂から形成された円筒部材４１
は、加熱されると半径方向に収縮し、軸線方向には収縮
せず逆に多少伸びる特性を有している。内層部材４２は
、熱溶融性及び粘着性金石する材料、例えば、ポリオレ
フィン共重合体、エチレン−酢酸ビニル共重合体等の熱
溶融性材料、もしくはブチルゴム系の粘着剤等の材料か
ら形成される。この補強用具４ｏを用いてｉ７アイバ接
続部を補強する場合は、補強用具４０を、第６図に示す
ように、熱融着された元ファイバ１０．ｌ’ｌから被覆
内端部２０ａ、２１ａにわたって嵌挿して、この状態で
ドライヤー等の加熱器を用いて力鳴する。カ鳴温度は、
向えば、１５０°Ｃ〜１８ｏ０ｃ程度で、ｊＭ　ｉ　時
ｒｌＪｌ　ｉ約３０秒程度である。この加熱処理により
、円筒部材４１１′ｆ、半径方向に収縮する。この加熱
と円筒部材４１の収縮力により、内層部材４．２は溶融
されて九７ア（ハＩ　Ｏ、１１′：ｙＪ向へ流動集中し
て光ファイバ１０．１１及び被覆内端部ｚｏａ、２１ａ
Ｋ？ｆｆ着する。この結果、円筒部材４１の内部を間は
内層部材４２によって、第７図に示すように、完全に充
填される。さらに円筒部材４１の収縮がっつくと、円筒
部材４１の両１４から内層部材４２があふれるようにな
り、この時点で収縮が完了する。そして、前述したよう
に、この円筒部材４１は軸方向には収量−ｉず逆に多少
伸びる傾向がああので、元ファイバ１０．１１は、第７
図に示すように、−直線上に整合して保持され、屈折又
は湾曲等の変形状態で保持される危険性は全くない。第
６図と第７図に示すように、加熱処理後の円筒部材４１
の長さｔ２＜第７１１）は加熱処理前の長さｔ。゛Figure 4 and Figure 7 are diagrams for explaining an example of failure.〇Figure 4 shows the reinforcing tool 40 for the optical fiber connection section of the present invention. This reinforcing tool 40 consists of a cylindrical member 41 formed into a cylindrical shape, and an inner layer member 42 spread on the inner peripheral surface of the cylindrical member 41 with a predetermined thickness. The cylindrical member 41 is made of a polycarbonate resin having heat shrinkability, such as tetrafluoroethylene resin, tetrafluoroethylene-hexapropylene copolymer resin, or tetrafluoroethylene resin having perfluoroalkoxy group side chains. , ethylene-4 fluorinated ethylene copolymer resin, vinylidene fluoride resin, or a resin in which polymer molecules are crosslinked by subjecting these four resins to radiation heat. Cylindrical member 41 formed from these resins
When heated, it contracts in the radial direction, but does not contract in the axial direction, but rather expands to some extent. The inner layer member 42 is formed from a heat-fusible and adhesive material, such as a heat-fusible material such as a polyolefin copolymer, an ethylene-vinyl acetate copolymer, or a butyl rubber-based adhesive. When reinforcing the i7 fiber joint using this reinforcing tool 4o, as shown in FIG. The cover is inserted from l'l to the inner end portions 20a and 21a of the cover, and in this state is heated using a heater such as a hair dryer. The chiming temperature is
In other words, the temperature is about 150°C to 18o0c, and jM i time rlJl i is about 30 seconds. This heat treatment causes the cylindrical member 411'f to contract in the radial direction. Due to this heating and the contraction force of the cylindrical member 41, the inner layer member 4.2 is melted and the flow concentrates in the direction of 97A (97A, 11': yJ), and the optical fiber 10.11 and the coated inner end zoa, 21a
K? ff Arrive. As a result, the space inside the cylindrical member 41 is completely filled with the inner layer member 42, as shown in FIG. When the cylindrical member 41 further shrinks, the inner layer member 42 overflows from both sides 14 of the cylindrical member 41, and at this point the shrinkage is completed. As mentioned above, this cylindrical member 41 has a tendency to elongate somewhat in the axial direction, so the original fibers 10.11
As shown - held in straight alignment and without any risk of being held in deformed conditions such as bends or curvatures. As shown in FIGS. 6 and 7, the cylindrical member 41 after the heat treatment
The length t2<711th) is the length t before heat treatment.

（第６図）よりも大きくなる０尚、円筒部材４１及び内
層部材４２の形状寸法は、円筒部材４１の収量量、内部
全問の谷線等の関連要素に基づいて、良好な補強結果が
得られるように、予め足められている。葦だ、内層部材
４２は、必ずしも円筒部材４１に＋ＭＮさせて形成しな
くともよい。このよりにして、補強用具４０を形成する
ことにより、経時変化によって収縮が進むこともなく、
作業性が良好でしかも高品質な補強部を実現することが
できる。(FIG. 6) The shapes and dimensions of the cylindrical member 41 and the inner layer member 42 are determined based on related factors such as the yield of the cylindrical member 41 and the valley lines of all the inner parts, so that a good reinforcement result can be obtained. It has been added in advance so that it can be obtained. However, the inner layer member 42 does not necessarily have to be formed by adding +MN to the cylindrical member 41. By forming the reinforcing tool 40 in this way, it will not shrink due to changes over time, and
A reinforced portion with good workability and high quality can be realized.

次に、補強作業の手順を簡単に説明する。先づ、ブ０フ
ァイバｌＯと１１を熱融着する前に、光ファイバ１０．
１１のいづれか一方、例えば、第５図に示すように、光
ファイバｌＯ側に補強用具４０を予め嵌挿しておき、次
いで元ファイバ１０と１１を熱融着する。次に、補強用
具４０を、第６図に示すように、元ファイバｉｏ、ｉｉ
の接続部上に移動させて適宜に整合させ、しかる後に、
加熱処理を行なう。この加熱処理は、先づ、補強用具４
０の長手方向中央部を加熱してから加熱領域を両端に移
行しながら行なわれる。′Ｔなわち、この中央部の内側
９間が内層８１＋材４２によって完全に充填されてから
、補強用具４０の中央部から一端に向かって加熱領域を
移行して一端側の力ロ熱処理を完了し、引きつづき、今
度ｔｒｚ、中央部から他端に加熱領域を移行して他端側
の加熱処理を完了する。このように加熱処理を行なうこ
とによって、補強用具４０の内側に気泡が残留すること
なく、第７図に示すように、内層部材４２が元ファイバ
１０．１１及び被覆内端部２Ｑａ、２１ａの領域に良好
に充填される。Next, the steps for reinforcing work will be briefly explained. First, before heat-sealing the optical fibers 10 and 11, the optical fibers 10.
11, for example, as shown in FIG. 5, a reinforcing tool 40 is inserted in advance into the optical fiber IO side, and then the original fibers 10 and 11 are heat-sealed. Next, the reinforcing tool 40 is attached to the original fibers io, ii, as shown in FIG.
over the connection and align accordingly, then
Perform heat treatment. This heat treatment first begins with the reinforcing tool 4.
The heating is carried out by heating the central part in the longitudinal direction of the 0 and then moving the heating area to both ends. 'T, that is, after the inner space 9 of this center part is completely filled with the inner layer 81 + material 42, the heating area is shifted from the center part to one end of the reinforcing tool 40, and the force-rotating heat treatment on the one end side is completed. Then, next time, the heating region is transferred from the center to the other end to complete the heating treatment on the other end. By performing the heat treatment in this manner, no air bubbles remain inside the reinforcing tool 40, and as shown in FIG. It fills well.

（７）発明の効果 以上、詳細に説明したよりに、本発明の元ファイバ接続
部の補強用具は、ふっ素糸（」脂を用いて円筒部材を形
成することにより、簡易構造であること、作業者の習熟
度に関係なく補強作業が簡単でしかも均一で安定した補
強部が得られること、補強後における元ファイバは変形
（屈折、湾曲等）が完全に防止されて保持されること、
等の効果大なるものがある。(7) Effects of the Invention As described above in detail, the reinforcing tool for the original fiber connection part of the present invention has a simple structure by forming a cylindrical member using fluorine thread, and is easy to operate. The reinforcing work is simple regardless of the skill level of the person, and a uniform and stable reinforcing part can be obtained, and the original fiber after reinforcement is completely prevented from deformation (bending, curving, etc.) and is held.
There are some things that have great effects.

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

第１図は光フアイバ同士を熱融漕法で接続し７ヒ状態を
示す図、第２図は従来の元ファイバ接続部の補強用具の
斜視図、第３図は第２図の補強用具で元ファイバ接続部
を補強した状態を示す長手方向の縦断面図、第４図は本
発明の元ファイバ接続部の補強用具４０の長手方向に沿
って切断した縦断面図、第５図は第４図の補強用具４０
全元ファイバ同士の接続前に一方の光フアイバ側に嵌挿
した状態を示す図、第６図は、第４図の補強用具４０を
光フアイバ接続部に嵌挿整合した状態を示す図、第７図
は第４図の補強用具４０によって光フアイバ接続部の補
強が完了した状態を示す図である。 ｌｏ、ｉｉ・・・元ファイバ、１２・・・ブＣファイバ
１０と１１の熱融着部、２０．２１・・・元ファイバ１
０．１１のそれぞ１１の被覆、２０ａ、２１ａ−被覆内
端部、４０・・・本発明の元ファイバ接続部の補強用具
、４１・・・円筒部必、４２・・・内層部材０特許出願
人 富士通株式会社 特許出願代理人 弁理士　　官　木　　　朗 弁理士　西舘和之 弁理士　内ＬＢ幸男 弁理士　　山　口　昭　之 第３回 第４図 第５図Fig. 1 is a diagram showing a state in which optical fibers are connected by the thermal fusion method, Fig. 2 is a perspective view of a conventional reinforcing tool for connecting the original fibers, and Fig. 3 is a reinforcing tool shown in Fig. 2. FIG. 4 is a longitudinal sectional view taken along the longitudinal direction of the reinforcing tool 40 for the original fiber connection portion of the present invention, and FIG. Reinforcement tool 40 in the figure
6 is a diagram showing a state where the reinforcing tool 40 of FIG. 4 is inserted and aligned with one optical fiber side before connecting all original fibers, FIG. 7 is a diagram showing a state in which reinforcement of the optical fiber connection portion has been completed using the reinforcing tool 40 of FIG. 4. lo, ii...Original fiber, 12...Thermal fusion part of BuC fibers 10 and 11, 20.21...Original fiber 1
0.11 each of 11 coatings, 20a, 21a-coated inner end, 40... Reinforcing tool for the original fiber connection part of the present invention, 41... Cylindrical part required, 42... Inner layer member 0 patent Applicant: Fujitsu Limited Patent Application Agent, Patent Attorney: Akira Kanki, Patent Attorney, Kazuyuki Nishidate, Patent Attorney, Yukio Yamaguchi, Patent Attorney, LB 3rd Session Figure 4 Figure 5

Claims (1)

【特許請求の範囲】[Claims] １、熱収縮性？ｉ［するふっ素糸樹脂から円筒状に形成
された円筒部材と、該円筒部材の内側周面に所足厚さ全
もって展着された熱溶融性及び（もしくは）粘着性を有
する内層部材とから成ることを％徴とする元ファイバ接
続部の補強用具０1. Heat shrinkable? A cylindrical member formed into a cylindrical shape from a fluorine thread resin, and an inner layer member having heat-melting properties and/or adhesive properties spread over the entire thickness of the cylindrical member on the inner circumferential surface of the cylindrical member. Reinforcement tool for the original fiber connection part with a % sign of 0