JPS61275707A - Optical fiber connector structure - Google Patents

Optical fiber connector structure

Info

Publication number
JPS61275707A
JPS61275707A JP11728085A JP11728085A JPS61275707A JP S61275707 A JPS61275707 A JP S61275707A JP 11728085 A JP11728085 A JP 11728085A JP 11728085 A JP11728085 A JP 11728085A JP S61275707 A JPS61275707 A JP S61275707A
Authority
JP
Japan
Prior art keywords
optical fiber
sleeve
cylindrical sleeve
diameter
cylindrical
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
JP11728085A
Other languages
Japanese (ja)
Inventor
Yoshitaka Morimoto
森本　芳隆
Yasumichi Arai
新井　康倫
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.)
NEC Corp
NEC Engineering Ltd
Original Assignee
NEC Corp
NEC Engineering 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 NEC Corp, NEC Engineering Ltd filed Critical NEC Corp
Priority to JP11728085A priority Critical patent/JPS61275707A/en
Publication of JPS61275707A publication Critical patent/JPS61275707A/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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3838—Means for centering or aligning the light guide within the ferrule using grooves for light guides
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule

Landscapes

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

Abstract

PURPOSE:To improve the assembly operability of an optical fiber connector by arranging a hollow pyramid sleeve which is elastic in radial directions of a circumscribed circle on the internal wall of a cylindrical sleeve whose outer periphery is finished to precision of microns. CONSTITUTION:The diameter of the inscribed circle of the hollow triangular pyramid sleeve 1 which is elastic in radial directions of the circumscribed circle is a little bit smaller than the diameter of an optical fiber to be inserted into it, the sleeve 1 is arranged in the cylindrical sleeve 3 so that the center of the inscribed circle is coaxial with the center axis of the cylindrical sleeve 3, and three ridge parts 3 of the triangular pyramid sleeve 1 are fixed on the internal wall of the cylindrical sleeve 3. The triangular pyramid sleeve 1 has sufficient elasticity, so variation in the external diameter of the optical fiber is absorbed by elastic deformation to allow the optical fiber to be easily inserted. Further, the optical fiber is held only by being inserted, so the operability in field construction is improved.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、二本の光ファイバを、着脱可能ニ接続するの
に使用される光ファイバコネクタ構造に関し、特に光フ
ァイバを保持固定する円筒スリーブの構造に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an optical fiber connector structure used to removably connect two optical fibers, and in particular to a cylindrical sleeve for holding and fixing optical fibers. Regarding the structure of

（従来技術） この種の光ファイバコネクタは１円筒スリーブの小径穴
に、接着剤を塗布後、光ファイバを挿入し、固着させて
光ファイバどおしを接続する構造としているが、この場
合、従来の光７アイパコネクタは、ミクロン単位の精度
に仕上げられた円筒　　。(Prior art) This type of optical fiber connector has a structure in which an adhesive is applied to a small diameter hole in a cylindrical sleeve, and then an optical fiber is inserted and fixed to connect the optical fibers. The conventional Hikari 7 Eyepa connector is a cylindrical body finished with micron precision.

スリーブの外周と光ファイバを挿入するための光フアイ
バ外径よりわずかに大きく仕上げられた前記円筒スリー
ブ中の小径大とがともに同芯となるよう罠仕上げられて
いる。従来の光ファイバコネクタは、前記円筒スリーブ
の外周と小径穴とを先に仕上げてから光ファイバを挿入
している。The outer periphery of the sleeve and the small diameter of the cylindrical sleeve, which is finished to be slightly larger than the outer diameter of the optical fiber into which the optical fiber is inserted, are both concentrically finished. In conventional optical fiber connectors, the outer periphery and small diameter hole of the cylindrical sleeve are first finished, and then the optical fiber is inserted.

（発明が解決しようとする問題点） 光ファイバコネクタにおいては、安定した接続性能を得
るための条件としては、光フアイバ相互の軸ずれを極小
に抑えることが必要である。この観点からみれば、前記
円筒スリーブの小径穴とこれに挿入される光フアイバ外
径とのクリアランスを小さくするのがよいが、他方、光
ファイバの挿入のことを考えれば、光ファイバが前記円
筒スリーブの小径穴に対する挿入抵抗によりダメージを
受けない程度に、相互のクリアランスは必要である。し
かし、光ファイバの外径は、数ミクロン〜１０ミクロン
程度のばらつきを持っているため、クリアランスを適度
に小さくするためには光フアイバ外径のばらつきに合せ
て内径の異なる円筒スリーブを用意する必要がある。(Problems to be Solved by the Invention) In an optical fiber connector, in order to obtain stable connection performance, it is necessary to minimize the axis misalignment between the optical fibers. From this point of view, it is better to reduce the clearance between the small diameter hole of the cylindrical sleeve and the outer diameter of the optical fiber inserted into it. Mutual clearance is necessary to avoid damage due to insertion resistance of the sleeve into the small diameter hole. However, the outer diameter of optical fibers varies from several microns to 10 microns, so in order to reduce the clearance appropriately, it is necessary to prepare cylindrical sleeves with different inner diameters to match the variations in the optical fiber outer diameter. There is.

また、前述の如く光ファイバと前記円筒スリーブの固着
に接着剤を使用するが、前記小径穴は、光ファイバコネ
クタ接続時の光７アイパ位置決めを正確に行うために非
弾性体で構成されるため。Further, as described above, adhesive is used to fix the optical fiber and the cylindrical sleeve, but the small diameter hole is made of an inelastic material in order to accurately position the optical 7 eyer when connecting the optical fiber connector. .

この接着剤が硬化するまで前記クリアランス範囲内で光
７アイパが移動することを防止しなければならない。そ
のため、振動等のない安定な場所に光７アイパ挿入後の
円筒スリーブを放置する必要があった。従って、特に現
地工事等の際は作業場所に制約を受けるという問題があ
った。The light 7 eyeper must be prevented from moving within the clearance range until the adhesive is cured. Therefore, it was necessary to leave the cylindrical sleeve after inserting the Hikari 7 Eyer in a stable place free from vibrations. Therefore, there has been a problem in that the work location is restricted, especially when on-site construction work is being carried out.

本発明の目的は、光フアイバ外径のばらつきに合せて多
種類の円筒スリーブを用意するという繁雑さ及びクリア
ランスを極小とする念めの前記円筒スリーブ小径穴を高
精度に加工するために生ずる高コストという欠点を除去
し、かつ現地工事等における光ファイバコネクタの組立
作業性を向上させ得る光ファイバコネクタ構造を提供す
ることにある。The purpose of the present invention is to avoid the complexity of preparing many types of cylindrical sleeves in accordance with the variations in the outer diameter of optical fibers, and to avoid the high cost that occurs when machining the small diameter hole of the cylindrical sleeve with high precision in order to minimize the clearance. It is an object of the present invention to provide an optical fiber connector structure that can eliminate the drawback of cost and improve the ease of assembling the optical fiber connector during on-site construction.

（問題点を解決するための手段） 本発明の光ファイバコネクタ構造は、外周がミクロン単
位の精度に仕上げられた円筒スリーブの内壁に、外接円
の直径方向に弾性を有する中空の三角柱状スリーブを配
置し、かつ前記中空の三角柱状スリーブを、その内接円
の中心軸線が、前記円筒スリーブの外周の中心軸線と同
一軸線状態になるように配置し、前記中空の三角柱状ス
リーブの外周の一部を前記円筒スリーブの内壁に固定し
て成るものである。(Means for Solving the Problems) The optical fiber connector structure of the present invention includes a hollow triangular prism-shaped sleeve having elasticity in the diametrical direction of the circumscribed circle on the inner wall of the cylindrical sleeve whose outer periphery is finished with precision in microns. and the hollow triangular prism-shaped sleeve is arranged so that the central axis of its inscribed circle is coaxial with the central axis of the outer periphery of the cylindrical sleeve, and one of the outer periphery of the hollow triangular prism-shaped sleeve The cylindrical sleeve is fixed to the inner wall of the cylindrical sleeve.

（実施例） 次に、第１図および第２図を参照して本発明の詳細な説
明する。(Example) Next, the present invention will be described in detail with reference to FIGS. 1 and 2.

第１図は本発明の実施例の横断面図、第２図はその縦断
面図である。外接円の直径方向に弾性を有する中空の三
角柱状スリーブ１の内接円２の直径は、そこに挿入する
光フアイバ直径の公称値よりもわずかに小さく形成され
ている。円筒スリーブ３の外周部４はミクロン単位の精
度に仕上げられており、中空の三角柱状スリーブ１の内
接円２の直径と同軸線となるように配置されている。中
空の三角柱状スリーブ１の３本の稜部５は、円筒スリー
ブ３の内壁に接着剤、溶接、又はろう付等の方法により
固定されている。FIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view thereof. The diameter of the inscribed circle 2 of the hollow triangular prism-shaped sleeve 1 having elasticity in the diametrical direction of the circumscribed circle is slightly smaller than the nominal value of the diameter of the optical fiber inserted therein. The outer circumferential portion 4 of the cylindrical sleeve 3 is finished with an accuracy of microns, and is arranged so as to be coaxial with the diameter of the inscribed circle 2 of the hollow triangular prism-shaped sleeve 1. The three ridges 5 of the hollow triangular prism sleeve 1 are fixed to the inner wall of the cylindrical sleeve 3 by adhesive, welding, brazing, or the like.

本実施例によれば、中空の三角柱状スリーブ１は、その
形状、材質および肉厚等により、充分な弾性を有してい
るため、内接円２の直径の位置に挿入する光フアイバ外
径が公称値の公差内でばらついても、中空の三角柱状ス
リーブ１０弾性変形（よりそのばらつきを吸収し、容易
に光ファイバを挿入でき、かつ光ファイバと内接円２の
直径の接線の間にクリアランスがないため、容易に光フ
ァイバを保持することが可能である。従って光フアイバ
挿入後の接着剤硬化中の円筒スリーブ３を放置する場所
に制約を受けなくなり１％に現地工事において作業性を
向上することができる。光ファイバは、細径のものでは
１２５ミクロン程度ト細いが、それに対応する内接円２
の直径を有する中空の三角柱状スリーブ１は、引抜加工
、モールド加工、あるいはプレス加工等によって成形す
ることが可能である。According to this embodiment, the hollow triangular prism-shaped sleeve 1 has sufficient elasticity due to its shape, material, wall thickness, etc., so that the outer diameter of the optical fiber inserted at the position of the diameter of the inscribed circle 2 is Even if there are variations within the nominal value tolerance, the hollow triangular prism-shaped sleeve 10 can be elastically deformed (this variation can be absorbed, the optical fiber can be easily inserted, and the optical fiber can be easily inserted between the optical fiber and the tangent to the diameter of the inscribed circle 2. Since there is no clearance, it is possible to easily hold the optical fiber.Therefore, there are no restrictions on where to leave the cylindrical sleeve 3 while the adhesive is curing after the optical fiber is inserted, and work efficiency in on-site construction can be reduced by 1%. Optical fibers have a small diameter of about 125 microns, but the corresponding inscribed circle 2
The hollow triangular prism-shaped sleeve 1 having a diameter of can be formed by drawing, molding, pressing, or the like.

（発明の効果） 以上説明したように本発明は、外周がミクロン単位の精
度に仕上げられた円筒スリーブの内壁に、外接円の直径
方向に弾性を有する中空の三角柱状スリーブを、その内
接円の中心軸線が円筒スＩＪ　−ブの外周の中心軸線と
同軸線となるように配置し、かつ前記中空の三角柱状ス
リーブの外周の一部を前記円筒スリーブの内壁に固定す
ることにより、光フアイバ外径のばらつきに合せて多種
類の円筒スリーブを用意するという繁雑さ、及びクリア
ランスを極小とするための円筒スリーブ小径穴を高精度
に加工するために生ずる高コストを除去できる効果があ
る。(Effects of the Invention) As explained above, the present invention provides a hollow triangular prism-shaped sleeve having elasticity in the diametrical direction of the circumscribed circle on the inner wall of a cylindrical sleeve whose outer periphery is finished with precision in microns. The optical fiber is arranged so that its center axis is coaxial with the center axis of the outer periphery of the cylindrical sleeve, and a part of the outer periphery of the hollow triangular prism-shaped sleeve is fixed to the inner wall of the cylindrical sleeve. This has the effect of eliminating the complexity of preparing many types of cylindrical sleeves in accordance with variations in outer diameter, and the high cost of highly accurate machining of small diameter holes in the cylindrical sleeves to minimize clearance.

また、光ファイバを光ファイバコネクタに挿入するのみ
で光ファイバを保持できるため１％に、現地工事におい
て作業性が向上するという効果がある。Furthermore, since the optical fiber can be held simply by inserting it into the optical fiber connector, it has the effect of improving workability in on-site construction by 1%.

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

第１図は本発明の実施例の横断面図、第２図は本発明の
実施例の側面断面図である。 １・・・中空の三角柱状スリーブ。 ２・・・内接円、　　　　　３・・・円筒スリーブ。 ４・・・外周部、　　　　　５・・・稜部。FIG. 1 is a cross-sectional view of an embodiment of the invention, and FIG. 2 is a side sectional view of the embodiment of the invention. 1...Hollow triangular prism sleeve. 2...Inscribed circle, 3...Cylindrical sleeve. 4...Outer periphery, 5...Ridge.

Claims (1)

【特許請求の範囲】[Claims] 外周がミクロン単位の精度に仕上げられた円筒スリーブ
の内壁に、外接円の直径方向に弾性を有する中空の三角
柱状スリーブを、その内接円の中心軸線が該円筒スリー
ブの外周の中心軸線と同芯になるように配置し、かつ前
記三角柱状スリーブの外周の一部を前記円筒スリーブの
内壁に固定させたことを特徴とする光ファイバコネクタ
構造。A hollow triangular prism-shaped sleeve having elasticity in the diametrical direction of the circumscribed circle is placed on the inner wall of a cylindrical sleeve whose outer circumference has been finished to a precision of microns, and the center axis of the inscribed circle is the same as the center axis of the outer circumference of the cylindrical sleeve. An optical fiber connector structure characterized in that the triangular prism-shaped sleeve is arranged so as to form a core, and a part of the outer periphery of the triangular prism-shaped sleeve is fixed to the inner wall of the cylindrical sleeve.
JP11728085A 1985-05-30 1985-05-30 Optical fiber connector structure Pending JPS61275707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11728085A JPS61275707A (en) 1985-05-30 1985-05-30 Optical fiber connector structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11728085A JPS61275707A (en) 1985-05-30 1985-05-30 Optical fiber connector structure

Publications (1)

Publication Number Publication Date
JPS61275707A true JPS61275707A (en) 1986-12-05

Family

ID=14707835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11728085A Pending JPS61275707A (en) 1985-05-30 1985-05-30 Optical fiber connector structure

Country Status (1)

Country Link
JP (1) JPS61275707A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010244073A (en) * 2002-08-16 2010-10-28 Nanoprecision Products Inc High precision optoelectronic components
WO2020245865A1 (en) * 2019-06-03 2020-12-10 日本電信電話株式会社 Optical fiber guide structure and optical fiber connection structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010244073A (en) * 2002-08-16 2010-10-28 Nanoprecision Products Inc High precision optoelectronic components
JP2013228764A (en) * 2002-08-16 2013-11-07 Nanoprecision Products Inc High precision optoelectronics component
WO2020245865A1 (en) * 2019-06-03 2020-12-10 日本電信電話株式会社 Optical fiber guide structure and optical fiber connection structure

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