JPH0654616B2 - Optical fiber composite insulator - Google Patents
Optical fiber composite insulatorInfo
- Publication number
- JPH0654616B2 JPH0654616B2 JP61132478A JP13247886A JPH0654616B2 JP H0654616 B2 JPH0654616 B2 JP H0654616B2 JP 61132478 A JP61132478 A JP 61132478A JP 13247886 A JP13247886 A JP 13247886A JP H0654616 B2 JPH0654616 B2 JP H0654616B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- rod
- shaped body
- composite insulator
- hole
- 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.)
- Expired - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 title claims description 65
- 239000012212 insulator Substances 0.000 title claims description 37
- 239000002131 composite material Substances 0.000 title claims description 14
- 239000010410 layer Substances 0.000 claims description 15
- 229910052573 porcelain Inorganic materials 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- GLGNXYJARSMNGJ-VKTIVEEGSA-N (1s,2s,3r,4r)-3-[[5-chloro-2-[(1-ethyl-6-methoxy-2-oxo-4,5-dihydro-3h-1-benzazepin-7-yl)amino]pyrimidin-4-yl]amino]bicyclo[2.2.1]hept-5-ene-2-carboxamide Chemical compound CCN1C(=O)CCCC2=C(OC)C(NC=3N=C(C(=CN=3)Cl)N[C@H]3[C@H]([C@@]4([H])C[C@@]3(C=C4)[H])C(N)=O)=CC=C21 GLGNXYJARSMNGJ-VKTIVEEGSA-N 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229940125758 compound 15 Drugs 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Insulators (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
【発明の詳細な説明】 発明の目的 （産業上の利用分野） 本発明は例えば送配電線の電圧や電流を検出して測定す
る光センサ等に接続される光フアイバ複合碍子に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an optical fiber composite insulator connected to, for example, an optical sensor or the like for detecting and measuring voltage or current of a transmission and distribution line.
（従来の技術） 従来、この種の光フアイバ複合碍子として、特開昭６０
−１５８４０２号公報に開示されたものがあった。これ
は磁器碍子の中心部に形成した貫通孔に光フアイバを挿
通してエポキシ樹脂等の絶縁物を充填している。(Prior Art) Conventionally, as an optical fiber composite insulator of this type, Japanese Patent Application Laid-Open No.
There was one disclosed in Japanese Patent Publication No. 158402. In this, an optical fiber is inserted through a through hole formed at the center of a porcelain insulator to fill an insulator such as epoxy resin.
又、特開昭６０−２２５８０６号公報に開示された光フ
アイバ複合碍子は、磁器碍子の貫通孔の内周面に形成さ
れた谷に光フアイバを螺旋状に収容するようにしてい
る。In the optical fiber composite insulator disclosed in Japanese Patent Laid-Open No. 60-225806, the optical fibers are spirally accommodated in the valley formed on the inner peripheral surface of the through hole of the porcelain insulator.
（発明が解決しようとする問題点） ところが、前記の光フアイバ複合碍子は、光フアイバを
貫通孔に挿入するので、貫通孔の壁面につかえたり、曲
がったりして挿通する作業が面倒であるばかりでなく、
所定の位置に光フアイバを保持することが困難であり、
さらに貫通孔に絶縁物を充填する際、光フアイバが同貫
通孔内で絶縁物により押されて折損したりするという問
題があった。(Problems to be solved by the invention) However, in the above-described optical fiber composite insulator, since the optical fiber is inserted into the through hole, the work of inserting the optical fiber into the wall surface of the through hole or bending it is troublesome. Not
It is difficult to hold the optical fiber in place,
Further, when the through hole is filled with the insulator, there is a problem that the optical fiber is pushed by the insulator in the through hole and is broken.
又、前者の光ファイバ複合碍子は、絶縁物として有機質
のエポキシ樹脂を使用し、かつ同碍子は常時課電状態に
おかれるため、湿気や温度変化などにより絶縁物が劣化
し易く、その絶縁性が低下するという問題があった。Also, the former optical fiber composite insulator uses an organic epoxy resin as an insulator, and since the insulator is always in a charged state, the insulator is prone to deterioration due to humidity and temperature changes, and its insulation There was a problem that it decreased.
又、後者の光フアイバ複合碍子は、内部が空洞のままで
あるため、貫通孔内に湿気が篭もって碍子が機械的強度
を損ねたり、絶縁性が低下し、線路故障を招き易いとい
う問題があった。In addition, the latter optical fiber composite insulator has a problem that since the inside remains hollow, moisture is trapped in the through hole and the insulator loses its mechanical strength or its insulating property deteriorates, which easily causes a line failure. there were.
発明の構成 （問題点を解決するための手段） 本発明は前記問題点を解決するために、低融点の無機質
絶縁材よりなる棒状体に光フアイバを配設して磁器碍子
の長手方向に設けた貫通孔に挿通し、低融点の無機質絶
縁層とともに加熱溶融して同絶縁層と混和させ、前記貫
通孔内に前記光フアイバを固定するという手段を採って
いる。Structure of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention provides a rod-shaped body made of an inorganic insulating material having a low melting point with an optical fiber provided in the longitudinal direction of a porcelain insulator. The optical fiber is fixed in the through hole by passing through the through hole, heating and melting together with the low melting point inorganic insulating layer to mix with the insulating layer.
（作用） 本発明は前記手段を採ったことにより、次のように作用
する。(Operation) The present invention operates as follows by adopting the above means.
光フアイバが棒状体に配設してあるので、磁器碍子の貫
通孔への挿入が容易となり、挿入時に光フアイバが損傷
せず、又、所定の位置に確実に保持でき、棒状体と無機
質絶縁層とを加熱溶融して混和させる時にも光フアイバ
に無理な力が作用せず、その損傷が防止される。Since the optical fiber is arranged in the rod-shaped body, it is easy to insert it into the through hole of the porcelain insulator, the optical fiber is not damaged during insertion, and it can be securely held in place, and the rod-shaped body and the inorganic insulation Even when the layer and the layer are heated and melted to mix, the optical fiber is not subjected to an excessive force, and its damage is prevented.
磁器碍子の貫通孔には無機質絶縁層が溶着形成されてい
るので、湿気や温度変化があり、かつ常時課電状態であ
っても劣化したり、絶縁性の低下が防止され、碍子機能
が安定的に維持される。Since the inorganic insulating layer is welded and formed in the through holes of the porcelain insulator, the insulator function is stable even if there are changes in humidity and temperature, and even if the power is constantly applied, deterioration of the insulation is prevented. Maintained.
（実施例） 以下、本発明を具体化した一実施例を第１図〜第４図に
基づいて説明すると、外周面に複数のひだ部１ａを一体
形成した磁器碍子１の中心部には長手方向に貫通孔１ｂ
が形成されている。この貫通孔１ｂには第２，３図に示
すように表層部に二条の溝３ａを長手方向に形成した低
融点の無機質絶縁材料よりなる棒状体３の前記溝３ａ内
に、光フアイバ２を配設しこの光フアイバ２は、接着剤
又はテープ等により溝３ａ内に仮止めすることが好まし
い。(Embodiment) Hereinafter, one embodiment embodying the present invention will be described with reference to FIGS. 1 to 4. In the central portion of the porcelain insulator 1 having a plurality of pleats 1a integrally formed on the outer peripheral surface, a long portion is formed at the center. Through hole 1b
Are formed. As shown in FIGS. 2 and 3, in this through hole 1b, the optical fiber 2 is inserted into the groove 3a of the rod-shaped body 3 made of a low melting point inorganic insulating material in which two grooves 3a are formed in the surface layer portion in the longitudinal direction. It is preferable to dispose the optical fiber 2 and temporarily fix the optical fiber 2 in the groove 3a with an adhesive or a tape.
第１図に示すように棒状体３を光フアイバ２とともに貫
通孔１ｂに遊嵌するとともに無機質絶縁層４を形成する
低融点の硼珪酸鉛ガラスの粉末材料を貫通孔１ｂ内に充
填して電気炉内で３５０℃〜８００℃に加熱溶融させて
棒状体３と無機質絶縁層４を混和させ、その後冷却固化
させて、棒状体３及び光フアイバ２を貫通孔１ｂ内に密
封固定する。このとき、低融点ガラスは溶融状態で加圧
注入してもよい。As shown in FIG. 1, the rod-shaped body 3 is loosely fitted into the through hole 1b together with the optical fiber 2 and the low melting point lead borosilicate glass powder material that forms the inorganic insulating layer 4 is filled into the through hole 1b to form an electric charge. The rod-shaped body 3 and the inorganic insulating layer 4 are mixed by heating and melting at 350 ° C. to 800 ° C. in a furnace, and then cooled and solidified to hermetically fix the rod-shaped body 3 and the optical fiber 2 in the through hole 1b. At this time, the low melting point glass may be injected under pressure in a molten state.
このようにして製造された光フアイバ複合碍子の使用例
を第４図について説明すると、磁器碍子１の下端部に
は、セメントなどの充填物６によりベース金具７が嵌合
固定されている。このベース金具７は例えば電柱の腕金
等にボルトにより締付固定される。前記磁器碍子１の上
端部には同じく充填物６によりフランジ金具８が嵌合固
定され、同フランジ金具８の上面には頂面に受け溝９ａ
を備えた蓋金具９が嵌合固定されている。そして、同蓋
金具９の上面には電線路の電線１０がボルト１１、ナッ
ト１２及び押え金具１３により締付固定されている。Referring to FIG. 4, an example of use of the optical fiber composite insulator manufactured in this manner will be described. A base metal fitting 7 is fitted and fixed to the lower end portion of the porcelain insulator 1 by a filler 6 such as cement. The base metal fitting 7 is fastened and fixed to, for example, a wire armor of an electric pole with bolts. A flange metal fitting 8 is similarly fitted and fixed to the upper end of the porcelain insulator 1 by a filler 6, and a top surface of the flange metal fitting 8 has a receiving groove 9a on its top surface.
A lid fitting 9 having is fitted and fixed. An electric wire 10 of the electric line is fastened and fixed to the upper surface of the lid fitting 9 by a bolt 11, a nut 12 and a holding fitting 13.
さらに、前記光フアイバ２のうち所定の光フアイバ２ａ
の先端には磁界センサや電界センサなどの光センサ１４
の基端部１４ａが接続され、同光センサ１４は前記蓋金
具９の内側凹部９ｂにコンパウンド１５などで包蔵収容
され、かつ補助電極２１などを介して蓋金具９に電気的
に接触させている。又、光フアイバ２の他端部には前記
ベース金具７の底面に形成した係合孔７ａに係合される
光ケーブルコネクタ１６が接続され、光センサ１４は光
フアイバケーブル１７などの光伝送路を介して測定装置
に接続されている。Further, a predetermined optical fiber 2a of the optical fibers 2 is used.
At the tip of the optical sensor 14 such as a magnetic field sensor or an electric field sensor
Is connected to a base end portion 14a of the same, and the optical sensor 14 is housed and housed in the inner recess 9b of the lid fitting 9 with a compound 15 or the like, and is in electrical contact with the lid fitting 9 via an auxiliary electrode 21 or the like. . Further, an optical cable connector 16 engaged with an engaging hole 7a formed in the bottom surface of the base metal fitting 7 is connected to the other end of the optical fiber 2, and the optical sensor 14 has an optical transmission line such as the optical fiber cable 17. Connected to the measuring device via.
次に、前記のように構成した光フアイバ複合碍子につい
て、その作用を説明する。Next, the operation of the optical fiber composite insulator constructed as described above will be described.
課電部である電線１０の電界又は磁界が光センサ１４に
作用し、この電界又は磁界により同光センサ１４内へ光
伝送路を介して供給された光パワが強度変調され、この
被変調光信号が光フアイバ２及び光フアイバケーブル１
７を経て図示しない測定装置に入力され、電気信号に変
換されて電線１０の電圧あるいは電流が検出、測定され
る。The electric field or the magnetic field of the electric wire 10 which is the power applying section acts on the optical sensor 14, and the electric power supplied into the optical sensor 14 through the optical transmission path is intensity-modulated by the electric field or the magnetic field, and the modulated light Signal is optical fiber 2 and optical fiber cable 1
It is input to a measuring device (not shown) via 7 and converted into an electric signal to detect and measure the voltage or current of the electric wire 10.
さて、本発明実施例においては、棒状体３の外周面に溝
３ａ，３ａを形成し、同溝３ａ，３ａに光フアイバ２を
収容して接着剤により仮止めし、これを磁器碍子１の貫
通孔１ｂに挿入したので、光フアイバ２の挿入を容易に
行うことができるとともに、光フアイバ２が溝３ａ内に
収容されているので無機質絶縁層４を充填して棒状体３
とともに加熱溶融する時にも、光フアイバ２を所定の位
置に確実に保持して無理な曲げ応力や引っ張り力を受け
ることがなく、従って光フアイバ２の折損などの損傷を
防止することができる。Now, in the embodiment of the present invention, the grooves 3a, 3a are formed on the outer peripheral surface of the rod-shaped body 3, the optical fibers 2 are housed in the grooves 3a, 3a, and temporarily fixed by an adhesive, and this is fixed to the porcelain insulator 1. Since the optical fiber 2 is inserted into the through hole 1b, the optical fiber 2 can be easily inserted, and since the optical fiber 2 is housed in the groove 3a, the inorganic insulating layer 4 is filled and the rod-shaped body 3 is formed.
At the same time, even when it is heated and melted, the optical fiber 2 is securely held at a predetermined position without being subjected to an unreasonable bending stress or tensile force, and therefore damage such as breakage of the optical fiber 2 can be prevented.
又、本発明は低融点ガラスなどの無機質材料よりな密封
絶縁層を使用しているので、湿気や温度変化があり、か
つ常時課電状態において劣化がなく、耐久性を向上する
ことができる。Further, since the present invention uses the hermetically sealed insulating layer made of an inorganic material such as low melting point glass, it is possible to improve the durability without humidity and temperature change and without deterioration in the constantly applied state.
さらに、前記使用例においては、光フアイバ２のうち所
定の光フアイバ２に電界あるいは磁界検出用の光センサ
１４を接続する用例を述べたが、光センサ１４を複数個
あるいは用途毎に必要数をそれぞれ残った光フアイバ２
に接続することができ、また、電線に添設した光フアイ
バの一端を接続して密封絶縁した碍子を介した光信号の
伝送が可能となり、光信号の伝送体として、安全、か
つ、多用に利用できる。Further, in the above-described usage example, the example in which the optical sensor 14 for detecting an electric field or a magnetic field is connected to a predetermined optical fiber 2 of the optical fibers 2 has been described. Light fiber 2 that remained
It is also possible to connect to one end of an optical fiber attached to an electric wire and to transmit an optical signal through an insulator that is hermetically insulated, making it a safe and versatile optical signal transmitter. Available.
又、本発明は次のように具体化することもできる。The present invention can also be embodied as follows.
（１）第５図（ａ）に示すように棒状体３の外周面４箇
所に溝３ａ〜３ａを形成し、各溝３ａ〜３ａに光フアイ
バ２を収容した状態で、第６図に示すようにダイス１８
の引き抜き孔１８ａから前記棒状体３を加熱しながら引
き抜いて第５図（ｂ）に示すように棒状体３の表層部に
光フアイバ２〜２を埋設すること。又、この埋設方法と
して第７図に示すように低融点ガラスよりなる保持体１
９に光フアイバ２〜２を係止させ、これを容器２０内に
収容して、無機質絶縁層４を溶着形成する粉末材料を充
填し、加熱して溶着すること。(1) As shown in FIG. 5 (a), grooves 3a to 3a are formed at four locations on the outer peripheral surface of the rod-shaped body 3, and the optical fibers 2 are accommodated in the grooves 3a to 3a, respectively, and shown in FIG. To die 18
The rod-shaped body 3 is pulled out from the pull-out hole 18a while heating and the optical fibers 2 to 2 are embedded in the surface layer portion of the rod-shaped body 3 as shown in FIG. 5 (b). Further, as this embedding method, as shown in FIG. 7, a holder 1 made of low melting point glass is used.
The optical fibers 2 and 2 are locked to the container 9, the container is housed in the container 20, and the powder material for forming the inorganic insulating layer 4 by welding is filled and heated for welding.
（２）第８図に示すように棒状体３の外周面に螺旋状の
溝３ａ〜３ａを形成し、そこに光フアイバ２〜２を収容
して接着剤等により仮止めすること。(2) As shown in FIG. 8, spiral grooves 3a to 3a are formed on the outer peripheral surface of the rod-shaped body 3, and the optical fibers 2 to 2 are housed therein and temporarily fixed with an adhesive or the like.
発明の効果 以上詳述したように、本発明は棒状体に光フアイバを配
設したので、磁器碍子の貫通孔に光フアイバを容易に挿
入することができるとともに、光フアイバを所定の位置
に確実の保持でき、さらに、無機質絶縁層と棒状体と溶
着混和する際、光フアイバへの外力の影響を軽減して光
フアイバの損傷を防止できる効果がある。Effect of the Invention As described in detail above, since the present invention has the optical fiber arranged in the rod-shaped body, the optical fiber can be easily inserted into the through hole of the porcelain insulator, and the optical fiber can be securely placed at a predetermined position. In addition, when the inorganic insulating layer and the rod-shaped body are welded and mixed, the effect of an external force on the optical fiber can be reduced and damage to the optical fiber can be prevented.
又、無機質絶縁層により光フアイバを磁器碍子に固定す
るようにしたの、電線路において劣化せず、従って、光
伝送路や碍子機能を安定的に維持でき、耐久性を向上
し、信頼性を高めることができる効果がある。Moreover, the optical fiber is fixed to the porcelain insulator by the inorganic insulating layer, so that it does not deteriorate in the electric line, therefore the optical transmission line and the insulator function can be stably maintained, the durability is improved, and the reliability is improved. There is an effect that can be increased.
第１図は本発明を具体化した一実施例を示す中央部縦断
面図、第２図は光フアイバを止着した棒状体の一部省略
正面図、第３図は第１図のＡ−Ａ線拡大断面図、第４図
は光フアイバ複合碍子の使用状態を示す中央部縦断面
図、第５図（ａ）及び（ｂ）は本発明の他の実施例を示
す棒状体の平面図、第６図及び第７図はそれぞれ棒状体
に光フアイバを埋設する方法を説明するための断面図、
第８図は棒状体に光フアイバを配設する他の実施例を示
す一部省略断面図である。 １……磁器碍子、２……光フアイバ、３……棒状体、４
……無機質絶縁層。FIG. 1 is a longitudinal sectional view of a central portion showing an embodiment embodying the present invention, FIG. 2 is a partially omitted front view of a rod-shaped body to which an optical fiber is fixed, and FIG. 3 is A- of FIG. A line enlarged sectional view, FIG. 4 is a central longitudinal sectional view showing a usage state of the optical fiber composite insulator, and FIGS. 5 (a) and 5 (b) are plan views of a rod-shaped body showing another embodiment of the present invention. , FIG. 6 and FIG. 7 are cross-sectional views for explaining a method of burying an optical fiber in a rod-shaped body,
FIG. 8 is a partially omitted sectional view showing another embodiment in which the optical fibers are arranged on the rod-shaped body. 1 ... Porcelain insulator, 2 ... Optical fiber, 3 ... Rod-shaped body, 4
...... Inorganic insulating layer.
Claims (4)
（３）に光フアイバ（２）を配設して磁器碍子（１）の
長手方向に設けた貫通孔（１ｂ）に挿通し、低融点の無
機質絶縁層（４）とともに加熱溶融して同絶縁層（４）
と混和させ、前記貫通孔（１ｂ）内に前記光ファイバ
（２）を固定したことを特徴とする光フアイバ複合碍
子。1. A rod-shaped body (3) made of an inorganic insulating material having a low melting point is provided with an optical fiber (2), and the optical fiber (2) is inserted into a through hole (1b) provided in a longitudinal direction of the porcelain insulator (1) to lower the temperature. The insulating layer (4) is heated and melted together with the inorganic insulating layer (4) having a melting point.
An optical fiber composite insulator characterized in that the optical fiber (2) is fixed in the through hole (1b) by being mixed with.
周面に設けた溝（３ａ）内に止着されている特許請求の
範囲第１項に記載の光フアイバ複合碍子。2. The optical fiber composite insulator according to claim 1, wherein the optical fiber (2) is fixed in a groove (3a) provided on the outer peripheral surface of the rod-shaped body (3).
層部に形成した溝（３ａ）内に収容し、加熱溶融して棒
状体の表層部に埋設した特許請求の範囲第２項に記載の
光フアイバ複合碍子。3. The optical fiber (2) is housed in a groove (3a) formed in the surface layer portion of the rod-shaped body (3), heated and melted and embedded in the surface layer portion of the rod-shaped body. The optical fiber composite insulator according to the item.
層部に包蔵されている特許請求の範囲第１項に記載の光
フアイバ複合碍子。4. The optical fiber composite insulator according to claim 1, wherein the optical fiber (2) is contained in a surface layer portion of a rod-shaped body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132478A JPH0654616B2 (en) | 1986-06-07 | 1986-06-07 | Optical fiber composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132478A JPH0654616B2 (en) | 1986-06-07 | 1986-06-07 | Optical fiber composite insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62290019A JPS62290019A (en) | 1987-12-16 |
| JPH0654616B2 true JPH0654616B2 (en) | 1994-07-20 |
Family
ID=15082311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61132478A Expired - Lifetime JPH0654616B2 (en) | 1986-06-07 | 1986-06-07 | Optical fiber composite insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0654616B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2825185B1 (en) * | 2001-05-22 | 2003-08-01 | Sediver | COMPOSITE ELECTRICAL INSULATOR INCLUDING AN INTEGRATED FIBER OPTIC SENSOR |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162211A (en) * | 1984-01-09 | 1985-08-24 | Sumitomo Electric Ind Ltd | Optical fiber assembly |
| JPS60158402A (en) * | 1984-01-27 | 1985-08-19 | Fujikura Ltd | Optical fiber composite insulator |
-
1986
- 1986-06-07 JP JP61132478A patent/JPH0654616B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62290019A (en) | 1987-12-16 |
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