JPS6256906A - Optical connector and its manufacture - Google Patents

Optical connector and its manufacture

Info

Publication number
JPS6256906A
JPS6256906A JP19707385A JP19707385A JPS6256906A JP S6256906 A JPS6256906 A JP S6256906A JP 19707385 A JP19707385 A JP 19707385A JP 19707385 A JP19707385 A JP 19707385A JP S6256906 A JPS6256906 A JP S6256906A
Authority
JP
Japan
Prior art keywords
ferrule
insertion holes
holes
pair
optical fiber
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
JP19707385A
Other languages
Japanese (ja)
Inventor
Ryosuke Arioka
有岡　良祐
Shinji Nagasawa
真二 長沢
Toshiaki Satake
佐武　俊明
Izumi Mikawa
泉 三川
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP19707385A priority Critical patent/JPS6256906A/en
Publication of JPS6256906A publication Critical patent/JPS6256906A/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
    • G02B6/3865—Details of mounting fibres in ferrules; Assembly methods; Manufacture fabricated by using moulding techniques
    • 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
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type

Landscapes

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

Abstract

PURPOSE:To obtain a small-sized, high-density optical connector for a multicore optical fiber and to shorten the manufacture time by manufacturing a connector plus by molding plural ferrules in one body, dividing the plug, and using two of the divisions as one unit. CONSTITUTION:Insertion holes 1b into which optical fibers 5 are to be inserted are formed in the ferrule 2' which is an integral molding of plural ferrules 2 molded out resin axially to pitch larger than the diameter of the insertion holes 2b. Further, two pin holes 14 for fitting are provided at a specific interval in the axial direction of the ferrule member 2'. This ferrule member 2' is divided into the plural ferrules 2. Then, two of those ferrules are used to manufacture the connector plug. The clad of a tape core 1 is removed firstly to expose the optical fiber 5, which is inserted into an insertion hole 2b which is charged previously with thermosetting resin while heating, and adhered and fixed. Then, a couple of connectors are coupled together by inserting a fitting pin into the insertion hole 14.

Description

【発明の詳細な説明】 （技術分野） 本発明は多心線光ファイバを高密１αに接続できる光コ
ネクタ及びその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an optical connector that can connect multi-core optical fibers in a high-density 1α connection, and a method for manufacturing the same.

（従来の技術） 従来の、テープ心線用光コネクタを第２図乃至第４図に
ついて説明する。この光コネクタはテープ心１ｉ１１の
光ファイバ端部を位置決め固定しでいるフェルール２と
、フェルール２のスリ−１挿入部３および挿入部３の保
護バイブ４と、前記スリーブｆｉｌｉ入部３に一体的に
挿入されたテープ心線１　内の複数の光ファイバ５から
成る一対のコネクタプラグを光ファイバ５の端面を対向
させて配置し、第４因に示ずように嵌合用スリー・プロ
内に一対のフェルール２のスリーブ挿入部３を保護バイ
ーブ４と共に挿入し、挟持バネ７を用いてフェルール２
の鍔？！、８を側面から加圧づることにより結合状態を
得るものであった。(Prior Art) A conventional tape fiber optical connector will be explained with reference to FIGS. 2 to 4. This optical connector is integrated with a ferrule 2 that positions and fixes the optical fiber end of the tape core 1i11, a three-1 insertion section 3 of the ferrule 2, a protective vibe 4 of the insertion section 3, and the sleeve fili entry section 3. A pair of connector plugs consisting of a plurality of optical fibers 5 in the inserted tape core wire 1 are arranged with the end surfaces of the optical fibers 5 facing each other, and a pair of connector plugs are placed in the mating three-pro as shown in the fourth factor. Insert the sleeve insertion part 3 of the ferrule 2 together with the protective vibe 4, and use the clamping spring 7 to attach the ferrule 2.
Tsuba? ! , 8 was pressed from the side to obtain a bonded state.

このような光コネクタを実現するためのフェルール２の
成形は、まず、第５図に示Ｊように２木のテープ心線１
のそれぞれを被覆除去して光ファイバ５を露出し、さら
に光ファイバ端を切断しく、対向する光ファイバ５同士
を接続し、しかる後、第６図に示づ樹脂成形をするため
の金型９内の中央部に設置された保護バイブ４内に前記
光ファイバ５の接続部５−が中央に収まるように挿入し
て固定する。この状態でインジェクションあるいはトラ
ンスファモールドマシン（図示せず）から前記金型９の
キャビティ１０内へ樹脂を流し込む。To form the ferrule 2 to realize such an optical connector, first, as shown in FIG.
The coating is removed from each of the optical fibers 5 to expose the optical fibers 5, the ends of the optical fibers are cut, the opposing optical fibers 5 are connected to each other, and then a mold 9 is used for resin molding as shown in FIG. The connecting portion 5- of the optical fiber 5 is inserted into the protective vibrator 4 installed at the center of the vibrator 4 and fixed therein. In this state, resin is poured into the cavity 10 of the mold 9 from an injection or transfer mold machine (not shown).

樹脂が硬化したのち、金型９を２分割すると第７図に示
す一体構造のフェルール２が成形でき、これを第８図に
示すように保護バイブ４の中央部で切断して一組のフェ
ルール２が完成する。したがってコネクタとしては切断
した一組のフェルール２同士を必ず結合部品として用い
ることになる。After the resin has hardened, the mold 9 is divided into two to form the integral structure ferrule 2 shown in FIG. 7, which is then cut at the center of the protective vibe 4 to form a set of ferrules as shown in FIG. 2 is completed. Therefore, as a connector, a pair of cut ferrules 2 must be used as connecting parts.

（発明が解決しようとする問題点） このような゛従来の光コネクタにおいては、接続される
一対のフェルール２を一体成形でつくるため、前記フェ
ルール２に樹脂成形される一対の光ファイバ５をあらか
じめ接続しておくという余分な工程が必要であった。ま
た、一体成形された一対のフェルール２を切！！ｉする
時、この接続部５′で切断することは樹脂成形する際、
サブミグ１コン程度の位置決め精度が要求されるため不
可能であり、からなず分割されたフェルール２の一方に
この接続部５′が存在し、コネクタとして結合時に０．
１ｄＢ程度の接続損失が増加する欠点がある。(Problems to be Solved by the Invention) In such conventional optical connectors, in order to make the pair of ferrules 2 to be connected by integral molding, the pair of optical fibers 5 to be resin-molded on the ferrules 2 are formed in advance. An extra step was required to make the connections. Also, cut the pair of integrally molded ferrules 2! ! i, cutting at this connecting part 5' is important when resin molding.
This is impossible because positioning accuracy of the order of one sub-Mig is required, and this connection part 5' exists on one side of the divided ferrule 2, so that when connected as a connector, 0.
There is a drawback that connection loss increases by about 1 dB.

また、多心の光ファイバ（数白心〜数手心）をこのよう
な方法でプラグフェルールに成形する場合、接続での失
敗が予想されるのでせいぜい数士心程度のフェルール作
製が限度と考え、られ、数Ｆ〜数首のフェルールが必要
となってコネクタ部分の大型化が強いられるととしに、
フェルール切断作業、フェルール端面の研磨作業に多大
な時間な要ず欠点がある。In addition, when forming a multi-core optical fiber (several cores to several cores) into a plug ferrule using this method, connection failure is expected, so we believe that the limit is to fabricate a ferrule with only a few cores at most. ferrules of several F to several necks are required, which forces the connector part to become larger.
This method has the disadvantage that it requires a lot of time to cut the ferrule and polish the end face of the ferrule.

（発明の目的） 本￥ｅＩ！ＩＩの目的は、前述の問題点を解決Ｊるため
、多心光ファイバ用として小型かつ高密度であり、作成
時間の短い経済的な光コネクタ及びその製造方法・２提
供することにある。(Object of the invention) Book￥eI! In order to solve the above-mentioned problems, the purpose of II is to provide an economical optical connector for multi-core optical fibers that is compact, high-density, and takes a short manufacturing time, and a method for manufacturing the same.

（問題点を解決するための手段） 第１の発明は、ｌ：２目的を達成Ｊるため、円板あるい
は多角形板にその厚さ方向を貫通する如く所定間隔をお
いた少なくとも２個の嵌合用゛ピンの挿通孔と多数の光
ファイバを１水死挿入する挿入孔。(Means for Solving the Problems) In order to achieve the l:2 objective, the first invention provides at least two plates spaced apart at a predetermined distance so as to penetrate through the thickness of the circular plate or polygonal plate. An insertion hole for a mating pin and an insertion hole for inserting multiple optical fibers.

を設けてなる一対のフェルールを有し、該各フェルール
の各挿入孔に各光ファイバを挿入し接着固定して・よる
一対のコネクタプラグを各挿通孔に嵌合用ピンを挿入し
て互いに結合した。また、第２の発明は上記目的を達成
するため、あらかじめ中実構造を有づる丸棒あるいは多
角形棒の艮手軸方向に嵌合用ピンを仲入りるための挿通
孔を穴明ｔＪ加工により２個設けるとともに、同じく長
手軸方向に光ファイバを外径よりわずかに内径の大ぎい
光ファイバ用挿入孔を該挿入孔の内径より若干大きいピ
ッチで穴明は加工により複数設けたフェルール部材を、
長手軸と垂直な断面で複数に分割して、少なくとも一対
のフェル−・ルを形成し、各７エルールの挿入孔に光フ
ァイバを挿入して接着固定することにより一対のコネク
タプラグを成形し、この一対のコネクタプラグの挿入孔
に嵌合用ピンを挿入して互いに結合するようにした。ま
た、第３の発明は上記目的を達成づるため、内部空間が
円筒形状あるいは多角形筒状をなしたハウジングと該ハ
ウジングの軸方向の２つの開放端のそれぞれに嵌合用ピ
ンの挿通孔に対応する孔を２個有し、かつ光ファイバ挿
入孔に対応する孔を複数有した薄板を相対向して締結で
きるようにした金型を備え、あらかじめ薄板の一方に、
ハウジング締結部と逆方向から挿通孔の対応孔には挿通
孔より若干大きい径のロッドを、挿入孔の対応孔には挿
入孔より若干大きい径のピアノ線をそれぞれ挿入し、該
薄板を前記ハウジングと締結後、ハウジングの他端に締
結した使方の薄板の挿通孔の対応孔、挿入孔の対応孔へ
６前記Ｏツド及びピアノ線を゛挿入して張力をかけつつ
保持し、前記ハウジング中空部内へ樹脂を流し込んで成
形、硬化後、前記ロッド及びピアノ線を引き抜くことに
よって、フェルール部材を得、該フェルール内材を長手
軸と垂直な断面で複数に分・割し、少なくとも一対のフ
ェルールを形成し、各フェルールの挿入孔に光ファイバ
を挿入して接着固定することにより一対のコネクタプラ
グを形成し、この一対のコネクタプラグの挿入孔に嵌合
用ピンを挿入して互いに結合するようにした。A pair of ferrules are provided, each optical fiber is inserted into each insertion hole of each ferrule and fixed with adhesive, and a pair of connector plugs are connected to each other by inserting a fitting pin into each insertion hole. . In addition, in order to achieve the above object, the second invention previously creates an insertion hole for inserting a fitting pin in the axial direction of a round bar or polygonal bar having a solid structure by drilling TJ processing. A ferrule member is provided with two optical fiber insertion holes having an inner diameter slightly larger than the outer diameter of the optical fiber in the longitudinal axis direction, and a plurality of holes are formed by machining at a pitch slightly larger than the inner diameter of the insertion hole.
Divide into a plurality of parts in a cross section perpendicular to the longitudinal axis to form at least one pair of ferrules, and form a pair of connector plugs by inserting an optical fiber into the insertion hole of each seven ferrules and fixing with adhesive. Fitting pins were inserted into the insertion holes of the pair of connector plugs to connect them to each other. Further, in order to achieve the above object, the third invention provides a housing whose internal space is cylindrical or polygonal, and each of the two open ends of the housing in the axial direction corresponds to an insertion hole for a fitting pin. A mold is provided in which thin plates having two holes corresponding to the optical fiber insertion holes and a plurality of holes corresponding to the optical fiber insertion holes can be fastened facing each other.
From the direction opposite to the housing fastening part, insert a rod with a diameter slightly larger than the insertion hole into the corresponding hole of the insertion hole, and insert a piano wire with a diameter slightly larger than the insertion hole into the corresponding hole of the insertion hole, and then insert the thin plate into the housing. After fastening, insert the O-rod and the piano wire into the holes corresponding to the insertion holes of the thin plate to be used fastened to the other end of the housing and the corresponding holes of the insertion holes, hold them under tension, and tighten the holes in the housing hollow. After pouring resin into the part, molding and curing, the rod and piano wire are pulled out to obtain a ferrule member, and the inner material of the ferrule is divided into a plurality of parts along a cross section perpendicular to the longitudinal axis, and at least one pair of ferrules are formed. A pair of connector plugs were formed by inserting an optical fiber into the insertion hole of each ferrule and fixing it with adhesive, and a mating pin was inserted into the insertion hole of the pair of connector plugs to connect them to each other. .

（作用） 第１の発明によれば、従来の如き光ファイバの接続部が
フェルール内に存在しないので、接続損失が減少する。(Function) According to the first invention, since a conventional optical fiber connection portion does not exist in the ferrule, connection loss is reduced.

また、光ファイバ挿入孔を高密曵に多数設けられるので
、光ファイバのｉ！％密度接続が可能となる。In addition, since a large number of optical fiber insertion holes can be provided with high density, the i! % density connection is possible.

第２及び第３の発明によれば、複数の光ファイバ挿入孔
と嵌合用ピンの２本の挿通孔をフェルール部材の結合軸
方向に段１ノ、このフェルール部材を結合軸に垂直な断
面゛Ｃ複数に分割して、このうち、分割された２個のフ
ェルールを１組のコネクタプラグとして用いるため、多
孔の寸法精度が向上し、また、コネクタの製造時間が短
縮され、経済化が図れる。また、フェルールの成形と光
ファイバのフェルールへの固定を分割したので、光ファ
イバの接続作業の失敗の恐れがなく仝光ファイバの一括
プラグが作製でき、コネクタ部の小型化が可能となる。According to the second and third aspects of the invention, the plurality of optical fiber insertion holes and the two insertion holes for the fitting pins are arranged one step in the direction of the coupling axis of the ferrule member, and the ferrule member has a cross section perpendicular to the coupling axis. Since the ferrule is divided into a plurality of parts and two of the divided ferrules are used as a set of connector plugs, the dimensional accuracy of the holes is improved, and the manufacturing time of the connector is shortened, resulting in economicalization. Furthermore, since the ferrule molding and the fixing of the optical fiber to the ferrule are separated, a plug of optical fibers can be manufactured all at once without the risk of failure in the optical fiber connection operation, and the connector part can be made smaller.

（実施例） 第１図は本発明の光コネクタの一部ｗｉ所側面図を示す
もので、図中１は複数のテープ心線、２は円板状のフェ
ルール、２ａはその結合面側外周に設けた鍔部である。(Example) Fig. 1 shows a side view of a part of the optical connector of the present invention, in which 1 is a plurality of tape core wires, 2 is a disk-shaped ferrule, and 2a is the outer periphery of the coupling surface side. This is the flange provided on the rim.

フェルール２の厚さ方向には外周縁寄りに２個の嵌合用
ピン１３の挿通孔１４が貫通して設けられ、また、テー
プ心１ｉ１１の各光ファイバ５の外径よりわずかに内径
の大きい多数の光ファイバ用挿入孔２ｂが該挿入孔２ｂ
の内径よりわずかに大きいピッチで貫通して設けられて
いる。上記フェルール２の各挿入孔２ｂにはテープ心線
１の各光ファイバ５が挿入され、接着固定される。この
ようにして構成された一対のコネクタプラグは嵌合用ピ
ン１３を各挿通孔１４に挿入することによって互いに結
合される。なお、このように結合されたコネクタプラグ
は第１２図に示１如く、挾持バネ７によってフ、【ルー
ル２の鍔部２ａに圧力加えて結合状態が保持される。In the thickness direction of the ferrule 2, two insertion holes 14 for fitting pins 13 are provided near the outer periphery, and a plurality of holes 14 having an inner diameter slightly larger than the outer diameter of each optical fiber 5 of the tape core 1i11 are provided. The optical fiber insertion hole 2b is the insertion hole 2b.
It is provided through the pipe at a pitch slightly larger than the inner diameter of the pipe. Each optical fiber 5 of the tape core wire 1 is inserted into each insertion hole 2b of the ferrule 2 and fixed with adhesive. A pair of connector plugs configured in this manner are connected to each other by inserting the fitting pins 13 into the respective insertion holes 14. As shown in FIG. 12, the connector plugs connected in this manner are maintained in the connected state by applying pressure to the flange 2a of rule 2 by the clamping spring 7.

次に本発明に係る製造方法の第１の実施例を説明Ｊる。Next, a first embodiment of the manufacturing method according to the present invention will be explained.

第９図（ａ）（ｂ）は樹脂にて成形された複数のフェル
ール２となる一体成形品のフェルール部材２′のａｔ要
図Ｃある。この成形品の状態でドリル等によって第９図
（ｂ）に示す光ファイバ５庖挿入する光ファイバ５の直
径０．１２５ｍｍより若干大きい挿入孔（例えば０．１
２９ｍｍ）２ｂを該直径より大きいビッヂでフェルール
部材２′の、一方向に複数設りるとともに、２個の１■
合用ピン穴１４をフェルール部材２′の軸方向に所定間
隔おいて説【ノる。ここで、ドリルで穴を正確にあけら
れる深さは穴径の１０〜１００倍であり、光ファイバ挿
入径０．１２８ｍｍでは約１０ｍｍ程度の厚みを有する
フェルール部材が作製゛Ｃきる。FIGS. 9(a) and 9(b) are schematic diagrams C of a ferrule member 2', which is an integrally molded product and constitutes a plurality of ferrules 2 molded from resin. In this molded product state, use a drill or the like to insert the five optical fibers shown in FIG. 9(b) into the insertion holes (for example, 0.1
29mm) 2b are provided in one direction of the ferrule member 2' with bits larger than the diameter, and two 1.
The matching pin holes 14 are spaced at predetermined intervals in the axial direction of the ferrule member 2'. Here, the depth to which a hole can be accurately drilled is 10 to 100 times the hole diameter, and a ferrule member having a thickness of about 10 mm can be manufactured with an optical fiber insertion diameter of 0.128 mm.

なお、成形品の材質はプラスチックに限定されるもので
はなく、ステンレス等の鉄系金属あるいはセラミック等
の焼結合金でも可能である。The material of the molded product is not limited to plastic, but may also be iron-based metals such as stainless steel or sintered alloys such as ceramics.

このようにしで作製されたフェルール部材２′は、第１
０図に承り如く鍔部２ａの中間で、艮千軸と垂心な断面
で複数に分割することにより、複数のフェルール２とな
る。The ferrule member 2' produced in this way is
As shown in Figure 0, a plurality of ferrules 2 are obtained by dividing the ferrule 2a into a plurality of parts at the middle of the flange 2a along a cross section perpendicular to the ferrule axis.

つぎに、このフェルール２ａ１４を用いて」ネタタブラ
グを作製する方法について述べる。第１１図に示すよう
にテープ心線１のｍ覆を除去して光ファイバ５を露出し
、あらかじめ熱硬化性樹脂を充填しておいた光ファイバ
挿入孔２ｂに熱を加えつつ挿入しフェルール２に光ファ
イバ５を接着固定する。これで一対のコネクタプラグが
完成したことになる。これら一対の］ネタタブラグを接
続Ｊる場合、第１図に示すように、コネクタプラグの一
方に嵌合用ピン挿通孔１４内へ嵌合用ピン１３を挿入し
ておき、他方のコネクタプラグの挿通孔１４内にＩＮ合
用ピン１３を挿入するように接続し、プラグ間の間隙が
なくなった時、前述の如ぐ挾持バネ７を用いてフェルー
ル２の鍔部２ａを側面から加圧し固定すると、第１２図
に示すコネクタの結合状態が得られる。Next, a method for producing a Netata plug using this ferrule 2a14 will be described. As shown in FIG. 11, the optical fiber 5 is exposed by removing the cover of the tape core 1, and is inserted into the optical fiber insertion hole 2b, which has been filled with thermosetting resin in advance, while applying heat to the ferrule 2. The optical fiber 5 is adhesively fixed to. A pair of connector plugs is now completed. When connecting these pair of connector plugs, as shown in FIG. 1, the fitting pin 13 is inserted into the fitting pin insertion hole 14 of one of the connector plugs, and then When the IN mating pin 13 is inserted into the plug and there is no gap between the plugs, the flange 2a of the ferrule 2 is pressed and fixed from the side using the aforementioned clamping spring 7, as shown in Fig. 12. The connected state of the connector shown in is obtained.

次に本発明方法の第２の実施例におけるフェルール２の
他の作製方法を説明する。第１４図は金型ハウジング１
１の両端に締結される薄板１２の構造図である。該薄板
１２はその厚み方向に嵌合用ピン１３を挿入するための
挿通孔１４に対Ｉ２５１゜る孔１２ａを２細布し、さら
に光ファイバ挿入孔２ｂに対応する孔１２ｂを複数有し
ており、切削加工によって得られる。第１３図に示ずよ
うに、まず、一方の薄板１２の２個の対応孔１２ａに１
コツト１５を挿入、さらに対応孔１２ｂに０．１２９ｍ
ｍ径のピアノ線１６を挿入、この状態で金型ハウジング
１１とねじリング１７を前記ロッド１５とピアノ線１６
を内包するように挿入しておき、他方の対向Ｊる薄板１
２の対応孔１２ａに前記ロッド１５を挿入、対応孔１２
ｂにピアノ線１６を挿入した後、前記ハウジング１１に
て外側から薄板１２を支持し、さらに薄板１２の軸方向
の紡ぎを止めるようにねじリング１７をハウジング１１
の２つの開放端で、それぞれ該ハウジング１１どねじ締
結Ｊれば第１３図に示づ金型１８が得られる。ここで、
該ロッド１５と該ピアノ線１６に張ツノを加えて金型１
Ｂ内に樹脂を流し込んで成形を行う。硬化後、ロッド１
５、ピアノ線１６を引１友き、ねじリング１７のねじ締
結をゆるめて外し、さらに薄板１２．ハウジング１１を
取り去れば、第９図に示づ一体成形されたフェルール部
′４Ａ１２が作製される。なお、成形樹脂として７０％
のガラスフィラー人りエポキシ樹脂を用いれば、硬化時
の収縮率は５／１０，０００Ｐ＋！麿であり、光ファイ
バ挿入孔２ｂの収縮量は０．１μｍであり、また、嵌合
ピン用挿通孔１４も径８ｒＴＴ　ｍ’ｅは４μｍの収縮
量であり、この収縮分を見込んで、ロッド１５、ピアノ
線１６の径を定めればよい。一体成形されたフェルール
部材２′は第１０図に示りにうにフェルール軸方向に切
断して複数個の７エルール２を得る。切１１ｉ　１１Ｖ
、通常０．５ｍｍ稈ＩＪＩＩ／）切取りしるが必要とさ
れるので、この切取りしるが光ファイバ挿入孔２ｂ、嵌
合ピン川挿通孔１４及び切断面の傾きとの相互作用で二
」ネタタブラグを接続する時、軸ずれが生じる。この軸
ずれは上記傾きのトータル値が０．５度の時、４μｍ（
ＩＴＩ失で０．１ｄＩ３程度）であり、実用上問題とは
ならない。その他の構成は第１の実施例と同様である。Next, another method for manufacturing the ferrule 2 in the second embodiment of the method of the present invention will be described. Figure 14 shows mold housing 1
1 is a structural diagram of a thin plate 12 fastened to both ends of the thin plate 1. The thin plate 12 has two holes 12a arranged in its thickness direction at an angle of I251° to the insertion hole 14 for inserting the fitting pin 13, and further has a plurality of holes 12b corresponding to the optical fiber insertion holes 2b. Obtained by cutting. As shown in FIG.
Insert Kotsuto 15 and further insert 0.129m into corresponding hole 12b.
Insert the m-diameter piano wire 16, and in this state, connect the mold housing 11 and screw ring 17 to the rod 15 and the piano wire 16.
is inserted so as to enclose it, and the other opposing thin plate 1
Insert the rod 15 into the corresponding hole 12a of No. 2,
After inserting the piano wire 16 into the housing 11, the thin plate 12 is supported from the outside by the housing 11, and the screw ring 17 is inserted into the housing 11 so as to stop the thin plate 12 from spinning in the axial direction.
If the two open ends of the housing 11 are screwed together, the mold 18 shown in FIG. 13 is obtained. here,
A tension horn is added to the rod 15 and the piano wire 16 to form the mold 1.
Pour resin into B and perform molding. After curing, rod 1
5. Pull out the piano wire 16, loosen and remove the screw ring 17, and then remove the thin plate 12. When the housing 11 is removed, the integrally molded ferrule part '4A12 shown in FIG. 9 is produced. In addition, 70% as molding resin
If you use glass filler epoxy resin, the shrinkage rate during curing will be 5/10,000P+! The amount of contraction of the optical fiber insertion hole 2b is 0.1 μm, and the diameter of the fitting pin insertion hole 14 is 8rTT m'e, and the amount of contraction is 4 μm. 15. What is necessary is to determine the diameter of the piano wire 16. The integrally molded ferrule member 2' is cut in the axial direction of the ferrule as shown in FIG. 10 to obtain a plurality of seven ferrules 2. Cut 11i 11V
, usually a 0.5 mm culm IJII/) cutting mark is required, so this cutting mark interacts with the optical fiber insertion hole 2b, the mating pin insertion hole 14, and the inclination of the cut surface. When connecting, axis misalignment occurs. This axis deviation is 4 μm (when the total value of the above tilt is 0.5 degrees)
The ITI loss is about 0.1 dI3), which does not pose a practical problem. The other configurations are the same as in the first embodiment.

フェルールは一体、成形あるいは一体加工で複数個−作
製し、これらのうち切断分離した左右の２個を１組のコ
ネクタとして用いるので、片方のフェルール毎に作￥Ｊ
する従来方法ど貨なって嵌合用ピンの挿通孔や光ファイ
バ挿入孔の相互間隔及び配置のための加工精度を必要と
しない。また、他の従来技術である、接続するコネクタ
プラグの７エルールをあらかじめ定め（おく方法が一旦
光ファイバ同士を接続するという作業工程の繁Ｈさを含
み、かつ接続点が−・つ増Ｊので０．１ｄＢ程度の接続
損失が増加するのに対し、本発明方法ではフェルールの
光ファイバ挿入孔に光ファイバを挿入、接着固定するだ
けで、接続点を増すことなく、接続が可能である。さら
に、光ファイバ同士を接続するという失敗の恐れのある
工程のないこと、光ファイバ挿入孔を任意の位置に複数
設けることが出来るので、極めて小型高密度の光コネク
タを作製することが可能となる。−例として、光ファイ
バの横並びピッチ０．２ｍｍ、縦並びピッチ０．３ｍｍ
とした場合、直径５５ｍｍのフェルールに３ｏ、ｏｏｏ
心程度の光ファイバが装着できる。The ferrules are made in multiple pieces by molding or integral processing, and the left and right two ferrules are cut and separated and used as a pair of connectors, so one ferrule can be made for each ferrule.
The conventional method does not require machining precision for the mutual spacing and arrangement of the fitting pin insertion hole and the optical fiber insertion hole. In addition, in another conventional technique, the method of predetermining the seven rules for the connector plug to be connected involves a complicated work process of once connecting the optical fibers, and the number of connection points increases by -. Whereas the splice loss increases by about 0.1 dB, the method of the present invention allows splicing without increasing the number of splicing points by simply inserting the optical fiber into the optical fiber insertion hole of the ferrule and fixing it with adhesive. Since there is no process of connecting optical fibers that may fail, and a plurality of optical fiber insertion holes can be provided at arbitrary positions, it is possible to produce an extremely small and high-density optical connector. - As an example, the horizontal pitch of optical fibers is 0.2 mm, and the vertical pitch is 0.3 mm.
In this case, 3o, ooo for a ferrule with a diameter of 55 mm
Optical fibers as large as a core can be attached.

なお２本発明方法はテープ心線にこだわらず単心線の光
ファイバでもあるいは円形構造の心線でも構造にかかわ
りなく適用が可能である。Note that the method of the present invention is applicable not only to tape cores but also to single-fiber optical fibers or circular cores, regardless of the structure.

（発明の効果） 以上説明した如く本発明に係る光＝１ネクタによれば、
従来の如き光ファイバの接続部がフェルール内に存在し
ないので、接続損失が減少する。また、光ファイバ挿入
孔を高密度に多数設置ノられるので、光ファイバの高密
度接続が可能と４【る。また、本発明方法によれば、コ
ネクタプラグは複数のフェルール内一体成形で製作し、
これを分割し、そのうち２個を１組として用いるので、
ファイバ挿入孔、嵌合ピン穴の位置関係について精度を
殻しないので極めて経済的であるとともに、事前に光フ
ァイバ同士を接続しておくなどの余計な作業がなく、接
続損失がこのために増えることもない。(Effects of the Invention) As explained above, according to the light=1 nectar according to the present invention,
Since there is no conventional optical fiber splice within the ferrule, splice loss is reduced. Furthermore, since a large number of optical fiber insertion holes can be installed at a high density, it is possible to connect optical fibers at a high density. Further, according to the method of the present invention, the connector plug is manufactured by integrally molding inside a plurality of ferrules,
Since this is divided and two of them are used as a set,
It is extremely economical because it does not sacrifice precision in the positional relationship of the fiber insertion hole and the mating pin hole, and there is no need for extra work such as connecting optical fibers together in advance, which increases connection loss. Nor.

さらに、光ファイバ挿入孔は相互位置関係の精度を要し
ないことから任意の位置に複数設番ノることができ、か
つ光ファイバ心線数が極め（多くなった場合でも２本の
嵌合ピンだけで結合するので、小型で高密度な光コネク
タが作製できる利点がある。Furthermore, since the optical fiber insertion holes do not require precision in mutual positional relationship, multiple numbers can be installed at any position, and the number of optical fibers can be extremely large (even if the number of optical fibers is large, two mating pins are required). Since the connection is made with just one wire, it has the advantage that a compact and high-density optical connector can be manufactured.

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

図面は本発明の説明に供するものであり、第１図は本発
明に係る光コネクタの結合前の状態を示す一部縦断側面
図、第２図はテープ心線用の従来の）Ｉルールの側面図
、第３図は従来のフェルールの正面図、第４図は従来の
フェルールを用いたコネクタの結合図、第５図はテープ
心線の皮むきと接続を示す拡大図、ｆｆ１６図は従来の
フェルールの成形を行う構成図、第７図及び第８図はそ
れぞれ成形された従来の一対のフェルール及び分割した
フェルールを表わす拡大図、第９図乃至第１２図は本発
明方法の第１の実施例を示すもので、第９図（ａ）はフ
ェルール部材の側面図、第９図（ｂ）は同正面図、第１
０図はフェルール部Ｉを分割した状態の側面図、第１１
図はフェル・−ルに光ファイバを固定する方法の説明図
、第１２図はコネクタの結合状態をあられす側面図、第
１３図及び第１４図は本発明方法の第２の実施例を示ず
もので、第１３図は成形金型の構成を示す断面図、第１
４図は薄板の斜視図である。 １・・・テープ心線、２・・・フェルール、５・・・光
ファイバ、７・・・挾持バネ、２ａ・・・鍔部、２ｂ・
・・光ファイバ挿入孔、９・・・金型、１０・・・キャ
ピテイ、１１・・・金型ハウジング、１２・・・薄板、
１３・・・嵌合用ピン、１４・・・挿通孔、１５・・・
ロッド、１６・・・ピアノ線、１７・・・ねじリング、
１８・・・金型、５−・・・接続部The drawings serve to explain the present invention, and FIG. 1 is a partially longitudinal side view showing the state of the optical connector according to the present invention before connection, and FIG. A side view, Figure 3 is a front view of a conventional ferrule, Figure 4 is a connection diagram of a connector using a conventional ferrule, Figure 5 is an enlarged view showing stripping and connection of the tape core wire, and Figure ff16 is a conventional ferrule. FIGS. 7 and 8 are enlarged views showing a conventional pair of molded ferrules and a divided ferrule, respectively. FIGS. 9 to 12 are diagrams showing the first method of the present invention. 9(a) is a side view of the ferrule member, FIG. 9(b) is a front view of the same, and FIG. 9(b) is a front view of the ferrule member.
Figure 0 is a side view of the ferrule part I divided.
The figure is an explanatory diagram of a method for fixing an optical fiber to a ferrule, Figure 12 is a side view showing the connected state of the connector, and Figures 13 and 14 show a second embodiment of the method of the present invention. Figure 13 is a cross-sectional view showing the configuration of the molding die.
FIG. 4 is a perspective view of the thin plate. DESCRIPTION OF SYMBOLS 1... Tape core wire, 2... Ferrule, 5... Optical fiber, 7... Clamping spring, 2a... Flange part, 2b...
... Optical fiber insertion hole, 9... Mold, 10... Capity, 11... Mold housing, 12... Thin plate,
13... Fitting pin, 14... Insertion hole, 15...
Rod, 16... Piano wire, 17... Screw ring,
18...Mold, 5-...Connection part

Claims (3)

【特許請求の範囲】[Claims] （１）円板あるいは多角形板にその厚さ方向を貫通する
如く所定間隔をおいた少なくとも２個の嵌合用ピンの挿
通孔と多数の光ファイバを１本宛挿入する挿入孔を設け
てなる一対のフェルールを有し、該各フェルールの各挿
入孔に各光ファイバを挿入し接着固定してなる一対のコ
ネクタプラグを各挿通孔に嵌合用ピンを挿入して互いに
結合したことを特徴とする光コネクタ。(1) A circular plate or a polygonal plate is provided with insertion holes for at least two fitting pins spaced apart at a predetermined interval so as to pass through the thickness direction thereof, and insertion holes for inserting a number of optical fibers one by one. A pair of connector plugs having a pair of ferrules, each optical fiber inserted into each insertion hole of each ferrule and fixed with adhesive, are connected to each other by inserting a fitting pin into each insertion hole. optical connector. （２）あらかじめ中実構造を有する丸棒あるいは多角形
棒の長手軸方向に嵌合用ピンを挿入するための挿通孔を
穴明け加工により２個設けるとともに、同じく長手軸方
向に光ファイバを外径よりわずかに内径の大きい光ファ
イバ用挿入孔を該挿入孔の内径より若干大きいピッチで
穴明け加工により複数設けたフェルール部材を、長手軸
と垂直な断面で、複数に分割して、少なくとも一対のフ
ェルールを形成し、各フェルールの挿入孔に光ファイバ
を挿入し接着固定することにより一対のコネクタプラグ
を形成し、この一対のコネクタプラグの挿入孔に嵌合用
ピンを挿入して互いに結合することを特徴とする光コネ
クタの製造方法。(2) Two insertion holes for inserting the fitting pins are pre-drilled in the longitudinal axis direction of a solid round or polygonal bar, and the optical fiber is inserted in the same longitudinal axis direction. A ferrule member, in which a plurality of optical fiber insertion holes with a slightly larger inner diameter are formed by drilling at a pitch slightly larger than the inner diameter of the insertion holes, is divided into a plurality of parts in a cross section perpendicular to the longitudinal axis, and at least one pair of ferrule members are formed. A pair of connector plugs is formed by forming ferrules, inserting an optical fiber into the insertion hole of each ferrule and fixing it with adhesive, and then inserting a mating pin into the insertion hole of the pair of connector plugs to connect them to each other. Features: Manufacturing method for optical connectors. （３）内部空間が円筒形状あるいは多角形筒状をなした
ハウジングと、該ハウジングの軸方向の２つの開放端の
それぞれに嵌合用ピンの挿通孔に対応する孔を２個有し
、かつ光ファイバ挿入孔に対応する孔を複数有した薄板
を相対向して締結できるようにした金型を備え、あらか
じめ薄板の一方に、ハウジング締結部と逆方向から、挿
通孔の対応孔には挿通孔より若干大きい径のロッドを、
挿入孔の対応孔には挿入孔より若干大きい径のピアノ線
をそれぞれ挿入し、該薄板を前記ハウジングと締結後、
ハウジングの他端に締結した他方の薄板の挿通孔の対応
孔、挿入孔の対応孔へも前記ロッド及びピアノ線を挿入
して張力をかけつつ保持し、前記ハウジング中空部内へ
樹脂を流し込んで成形、硬化後、前記ロッド及びピアノ
線を引き抜くことによって、フェルール部材を得、該フ
ェルール部材を長手軸と垂直な断面で複数に分割し、少
なくとも一対のフェルールを形成し、各フェルールの挿
入孔に光ファイバを挿入して接着固定することにより一
対のコネクタプラグを形成し、この一対のコネクタプラ
グの挿入孔に嵌合用ピンを挿入して互いに結合すること
を特徴とする光コネクタの製造方法。(3) A housing having a cylindrical or polygonal cylindrical internal space, two holes corresponding to the insertion holes of the fitting pins in each of the two axial open ends of the housing, and a light-emitting device. The mold is equipped with a mold that allows thin plates with multiple holes corresponding to the fiber insertion holes to be fastened facing each other, and the insertion holes are inserted into one of the thin plates in advance from the direction opposite to the housing fastening part, and the holes corresponding to the insertion holes are A rod with a slightly larger diameter than
Piano wires with a diameter slightly larger than the insertion holes are inserted into the holes corresponding to the insertion holes, and after the thin plates are fastened to the housing,
The rod and piano wire are also inserted into the holes corresponding to the insertion holes of the other thin plate fastened to the other end of the housing, and the holes corresponding to the insertion holes are held while applying tension, and the resin is poured into the hollow part of the housing to form the mold. After curing, the rod and piano wire are pulled out to obtain a ferrule member, the ferrule member is divided into a plurality of parts along a cross section perpendicular to the longitudinal axis to form at least one pair of ferrules, and a light is inserted into the insertion hole of each ferrule. A method of manufacturing an optical connector, comprising: forming a pair of connector plugs by inserting and adhesively fixing fibers; and inserting fitting pins into insertion holes of the pair of connector plugs to couple them to each other.
JP19707385A 1985-09-06 1985-09-06 Optical connector and its manufacture Pending JPS6256906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19707385A JPS6256906A (en) 1985-09-06 1985-09-06 Optical connector and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19707385A JPS6256906A (en) 1985-09-06 1985-09-06 Optical connector and its manufacture

Publications (1)

Publication Number Publication Date
JPS6256906A true JPS6256906A (en) 1987-03-12

Family

ID=16368264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19707385A Pending JPS6256906A (en) 1985-09-06 1985-09-06 Optical connector and its manufacture

Country Status (1)

Country Link
JP (1) JPS6256906A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144606U (en) * 1987-03-13 1988-09-22
JPH01134406A (en) * 1987-11-20 1989-05-26 Ogura Houseki Seiki Kogyo Kk Optical fiber connector
JPH0194909U (en) * 1987-12-16 1989-06-22
JPH01276104A (en) * 1988-04-27 1989-11-06 Sumitomo Electric Ind Ltd Optical connector
EP0736787A2 (en) * 1991-08-21 1996-10-09 The Furukawa Electric Co., Ltd. Optical connecting device
EP0771432A1 (en) * 1994-07-18 1997-05-07 SHEEM, Sang K. Face-lock interconnection means for optical fibers and other optical components, and manufacturing methods of the same
JP2010066358A (en) * 2008-09-09 2010-03-25 Fujitsu Ltd Method of manufacturing optical fiber connection elements, molding apparatus and optical fiber connection elements
JP2010091822A (en) * 2008-10-08 2010-04-22 Sumitomo Bakelite Co Ltd Housing member, assembly component for manufacturing connector and method of manufacturing connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54160249A (en) * 1978-06-09 1979-12-18 Nippon Telegr & Teleph Corp <Ntt> Multicore connector for optical fibers
JPS5928111A (en) * 1982-08-07 1984-02-14 Hitachi Chem Co Ltd Production of mold plug for optical connector
JPS59109010A (en) * 1982-12-14 1984-06-23 Keru Kk Mold for casting ferrule of optical connector and its manufacture
JPS6080809A (en) * 1983-10-12 1985-05-08 Sumitomo Electric Ind Ltd Connecting method of multicored optical fiber cables

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54160249A (en) * 1978-06-09 1979-12-18 Nippon Telegr & Teleph Corp <Ntt> Multicore connector for optical fibers
JPS5928111A (en) * 1982-08-07 1984-02-14 Hitachi Chem Co Ltd Production of mold plug for optical connector
JPS59109010A (en) * 1982-12-14 1984-06-23 Keru Kk Mold for casting ferrule of optical connector and its manufacture
JPS6080809A (en) * 1983-10-12 1985-05-08 Sumitomo Electric Ind Ltd Connecting method of multicored optical fiber cables

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144606U (en) * 1987-03-13 1988-09-22
JPH0453611Y2 (en) * 1987-03-13 1992-12-16
JPH01134406A (en) * 1987-11-20 1989-05-26 Ogura Houseki Seiki Kogyo Kk Optical fiber connector
JPH0512682B2 (en) * 1987-11-20 1993-02-18 Ogura Jewel Industry Co Ltd
JPH0194909U (en) * 1987-12-16 1989-06-22
JPH01276104A (en) * 1988-04-27 1989-11-06 Sumitomo Electric Ind Ltd Optical connector
EP0736787A2 (en) * 1991-08-21 1996-10-09 The Furukawa Electric Co., Ltd. Optical connecting device
EP0736787A3 (en) * 1991-08-21 1998-07-08 The Furukawa Electric Co., Ltd. Optical connecting device
EP0771432A1 (en) * 1994-07-18 1997-05-07 SHEEM, Sang K. Face-lock interconnection means for optical fibers and other optical components, and manufacturing methods of the same
EP0771432A4 (en) * 1994-07-18 1997-10-22 Sang K Sheem Face-lock interconnection means for optical fibers and other optical components, and manufacturing methods of the same
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