JPH0453609Y2 - - Google Patents
Info
- Publication number
- JPH0453609Y2 JPH0453609Y2 JP1986121041U JP12104186U JPH0453609Y2 JP H0453609 Y2 JPH0453609 Y2 JP H0453609Y2 JP 1986121041 U JP1986121041 U JP 1986121041U JP 12104186 U JP12104186 U JP 12104186U JP H0453609 Y2 JPH0453609 Y2 JP H0453609Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- caulking
- core
- tape
- 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.)
- Expired
Links
- 239000013307 optical fiber Substances 0.000 claims description 95
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims 1
- 238000002788 crimping Methods 0.000 description 16
- 230000003287 optical effect Effects 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、複数本の光フアイバを集合した多心
光フアイバに取り付けるコネクタプラグに関する
ものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a connector plug that is attached to a multi-core optical fiber that is a collection of a plurality of optical fibers.
（従来の技術及び問題点）
まずコネクタが取り付けられる光フアイバの構
造について述べる。(Prior Art and Problems) First, the structure of the optical fiber to which the connector is attached will be described.
第６図ａは１本の単心線の構造を示す側面図で
あつて、１は光フアイバ、２ａは光フアイバ１に
被覆をかぶせた単心線である。第６図ｂは第６図
ａのＡ−A′における断面図である。第７図ａは
複数本の光フアイバを集合したテープ心線の構造
を示す側面図であつて、１は光フアイバ、２ｂは
複数本の光フアイバ１を集合した後、被覆をかぶ
せた心線であつて、これをテープ心線と呼ぶ。第
７図ｂは第７図ａのＢ−B′における断面図であ
る。 FIG. 6a is a side view showing the structure of one single fiber wire, where 1 is an optical fiber and 2a is a single fiber wire in which the optical fiber 1 is covered with a coating. FIG. 6b is a sectional view taken along line A-A' in FIG. 6a. FIG. 7a is a side view showing the structure of a tape core in which a plurality of optical fibers are assembled, in which 1 is an optical fiber, and 2b is a core in which a plurality of optical fibers 1 are assembled and then covered with a coating. This is called a tape core wire. FIG. 7b is a sectional view taken along line BB' in FIG. 7a.
一般に用いられているテープ心線の寸法は、例
えば厚さ0.45mm、巾1.6mm、光フアイバの配列ピ
ツチ0.3mmであり、被覆材料は紫外線硬化樹脂を
用いている。 The dimensions of commonly used tape cores are, for example, 0.45 mm in thickness, 1.6 mm in width, and 0.3 mm in optical fiber arrangement pitch, and the coating material is an ultraviolet curing resin.
次に第７図に示したテープ心線に取り付ける多
心コネクタについて述べる。第１の従来例とし
て、長沢、佐武、芦谷、「多心光コネクタの簡易
組立て技術」昭和60年電子通信学会総合全国大会
2255、特願昭61−45400号「単心線集合部内蔵形
防水光フアイバ多心コネクタ」、及び実願昭61−
29997号「光多心コネクタ中子組立て治具」に示
されている多心光コネクタの構造を第８図に示
す。 Next, a multi-core connector attached to the tape core shown in FIG. 7 will be described. As the first conventional example, Nagasawa, Satake, Ashiya, "Simple assembly technology of multi-core optical connectors" 1985 IEICE General Conference
2255, Patent Application No. 45400 ``Waterproof Optical Fiber Multi-Fiber Connector with Built-in Single-Fiber Wire Collection Part'' and Utility Application No. 1983-
FIG. 8 shows the structure of the multi-fiber optical connector disclosed in No. 29997, "Optical Multi-Fiber Connector Core Assembly Jig."
第８図は、多心光コネクタの中子部品の構造を
示す斜視図であつて。１０１は中子フエルール、
１０２は中子ふた、１０３は光フアイバ位置決
め用細径孔、１０４はガイドピン用穴、１０５は
接着剤注入用穴である。組立は、中子フエルール
１０１への接着剤の塗布、光フアイバの挿入、接
着剤の加熱硬化、研磨機による中子端面の研磨の
順で行なう。 FIG. 8 is a perspective view showing the structure of a core component of a multi-core optical connector. 101 is a core ferrule, 102 is a core lid, 103 is a small diameter hole for positioning an optical fiber, 104 is a hole for a guide pin, and 105 is a hole for injection of adhesive. Assembly is performed in the following order: applying adhesive to the core ferrule 101, inserting an optical fiber, curing the adhesive by heating, and polishing the end face of the core using a polishing machine.
以下に第１の従来例の欠点を述べる。 The disadvantages of the first conventional example will be described below.
この組立て方法は、接着剤を用いて光フアイバ
を固定するため、接着剤の硬化する時間が加熱機
等を用い短縮しているものの10分〜15分間と長
く、作業性が悪い。また、加熱機、組立て治具等
を必要としている。次に、端面を研磨するための
研磨時間として約５分間必要であり、短時間での
組立てとは言えず、１つのコネクタプラグを組立
てるに必要な作業時間は約30分必要となり、簡単
に短時間に組立てができないなどの欠点がある。 This assembly method uses an adhesive to fix the optical fiber, so although the time required for the adhesive to harden is shortened by using a heating machine or the like, it takes a long time of 10 to 15 minutes and is poor in workability. Additionally, a heating machine, assembly jig, etc. are required. Next, it takes about 5 minutes to polish the end face, so it cannot be said that assembly is done in a short time.It takes about 30 minutes to assemble one connector plug. It has drawbacks such as not being able to be assembled on time.
第２の従来例として実願昭60−198856号「光コ
ネクタプラグ」を例にとつて、その構成を述べ
る。 As a second conventional example, the structure will be described using Utility Application No. 60-198856 "Optical Connector Plug" as an example.
第９図は、第６図に示した単心線に使用され、
接着剤を使用しない簡易組立て形の光コネクタで
あつて、２０１は光フアイバ位置決め用細径孔、
２０２は中子、２０３はアダプタと結合するカツ
プリングナツト、２０４はスプリング、２０５は
中子２０２の一部と係合してこれを内部に保持す
るハウス筒、２０６は中子２０２の後端部に設け
たかしめ機構、２０７はクランプスリーブ、２０
７ａはかしめ部、２０７ｂはクランプスリーブ２
０７の外周オネジ部、２０８はクランプナツト、
２０８ａはクランプナツト２０８の内周メネジ
部、２０９はナイロン製柔軟パイプである。コネ
クタプラグの組立ては、単心線２ａの光フアイバ
１の先端を応力破断により光が通りやすい端面を
得た後、単心線２ａを中子２０２の光フアイバ位
置決め用細径孔２０１へ挿入し、単心線２ａの被
覆部分を中子２０２の後端部に設けたかしめ機構
２０６のクランプナツト２０８を回転し、かしめ
固定することで組立てられる。これに要する組立
て時間は２〜３分間であり、簡易に組立てできる
特長を有する。 Figure 9 is used for the single core wire shown in Figure 6,
It is an optical connector of a simple assembly type that does not use adhesive, and 201 has a small diameter hole for positioning the optical fiber;
202 is a core, 203 is a coupling nut that connects with the adapter, 204 is a spring, 205 is a house tube that engages with a part of the core 202 and holds it inside, 206 is the rear end of the core 202 207 is a clamping sleeve, 20
7a is the caulking part, 207b is the clamp sleeve 2
07 is the outer peripheral male thread, 208 is the clamp nut,
Reference numeral 208a indicates an inner peripheral female threaded portion of the clamp nut 208, and reference numeral 209 indicates a flexible pipe made of nylon. To assemble the connector plug, after stress-breaking the tip of the optical fiber 1 of the single-fiber wire 2a to obtain an end surface through which light can easily pass, the single-fiber wire 2a is inserted into the small diameter hole 201 for optical fiber positioning of the core 202. The coated portion of the single-fiber wire 2a is assembled by rotating the clamp nut 208 of the caulking mechanism 206 provided at the rear end of the core 202 and caulking and fixing it. The assembly time required for this is 2 to 3 minutes, and it has the advantage of being easy to assemble.
以下にこの第２の従来例をテープ心線に適用す
る上での問題を述べる。 Problems in applying this second conventional example to a tape core will be described below.
かしめ部２０７ａは単心線２ａを円対称に均一
にかしめることができ、安定した固定が可能であ
るが、この構造では長方形の断面をしているテー
プ心線を安定に固定することができない。また被
覆を除去した光フアイバを狭いかしめ部より挿入
する工程は作業がしにくいという欠点がある。 The caulking portion 207a can uniformly caulk the single fiber 2a in a circularly symmetrical manner, and stable fixation is possible, but with this structure, it is not possible to stably fix a tape fiber having a rectangular cross section. . Another disadvantage is that the process of inserting the optical fiber from which the coating has been removed through the narrow caulking section is difficult to perform.
（問題点を解決するための手段）
本考案は、コネクタプラグに挿入された多心光
フアイバテープ心線を固定する方法として、接着
剤を用いることなく、心線を平板でかしめ把持す
る機構を有し、コネクタプラグの組立てを短時間
に行うことのできる多心光フアイバ用コネクタプ
ラグを提供することにある。本コネクタプラグを
用いることにより、テープ心線を用いた光ケーブ
ルの切断事故等の障害に対して短時間の復旧が可
能となる。(Means for Solving the Problems) The present invention provides a mechanism for caulking and holding the core wires with a flat plate without using adhesive, as a method for fixing the core wires of a multi-core optical fiber tape inserted into a connector plug. It is an object of the present invention to provide a connector plug for multi-core optical fibers, which has the following features and can be assembled in a short time. By using this connector plug, it is possible to recover in a short time from failures such as disconnection accidents of optical cables using tape core wires.
本考案の多心光フアイバ心線用コネクタプラグ
は、従来の問題点を解決するため、テープ心線２
ｂの幅広側の側面を平行に平板でかしめる構造を
有している。 The multi-core optical fiber connector plug of this invention solves the problems of the conventional tape core wires.
It has a structure in which the wide side surface of b is caulked in parallel with flat plates.
まずテープ心線をかしめた時の光フアイバの変
形について検討する。第３図は第７図に示したテ
ープ心線２ｂをかしめ板３によりかしめ圧縮変形
した時、光フアイバの曲りによる光フアイバ端面
の移動を説明する図であつて、光フアイバの曲が
り等を強調して示している。第３図ａは、光フア
イバ１の長手方向をｘ、幅方向をｙとして、かし
め圧縮による光フアイバのｘ方向、ｙ方向への移
動を示す図である。光フアイバ１はｘ＝０〜Ｌの
間で曲がり。それ以外では直線である。 First, we will examine the deformation of the optical fiber when the tape core wire is crimped. FIG. 3 is a diagram illustrating the movement of the end face of the optical fiber due to the bending of the optical fiber when the tape core wire 2b shown in FIG. It is shown as follows. FIG. 3a is a diagram showing the movement of the optical fiber in the x direction and the y direction due to caulking compression, where x is the longitudinal direction of the optical fiber 1 and y is the width direction. The optical fiber 1 is bent between x=0 and L. Otherwise, it is a straight line.
第３図ｃは、第３図ａのｘ＝Ｌにおける断面図
であつて、破線はテープ心線２ｂの初期状態（か
しめ圧縮の前）を、実線はかしめ圧縮変形後の状
態を示す。かしめにより、５本の光フアイバ１は
図中の破線矢印で示すように移動する。第３図ｂ
は、第３図ａのＢ−B′の断面図であつて、厚み
方向に光フアイバ１の移動を示す図である。 FIG. 3c is a sectional view at x=L in FIG. 3a, where the broken line shows the initial state (before caulking and compression) of the tape cable core 2b, and the solid line shows the state after deformation by caulking and compression. Due to the crimping, the five optical fibers 1 move as indicated by broken line arrows in the figure. Figure 3b
3 is a sectional view taken along line BB' in FIG. 3a, showing movement of the optical fiber 1 in the thickness direction.
第３図において、光フアイバ端面のｘ方向への
移動量を規定する。破線Ａ−A′はすべての光フ
アイバ１の先端の初期位置であり、各光フアイバ
の端面移動量ΔLはＡ−A′を基準とする。次に光
フアイバのｙ方向の移動は、中央の光フアイバの
位置を基準とし、Δp＝p1−p0で規定する。また
光フアイバの厚さについては、初期の厚さt0から
t1に変化し、かしめ圧縮変形率を（t0−t1）／t0
（＝Δt／t0）とする。 In FIG. 3, the amount of movement of the optical fiber end face in the x direction is defined. The broken line A-A' is the initial position of the tips of all the optical fibers 1, and the end face movement amount ΔL of each optical fiber is based on A-A'. Next, the movement of the optical fiber in the y direction is defined by Δp=p 1 −p 0 using the position of the central optical fiber as a reference. In addition, the thickness of the optical fiber is determined from the initial thickness t 0 to
t 1 , and the caulking compression deformation rate is (t 0 − t 1 )/t 0
(=Δt/t 0 ).
光フアイバ１の先端部が移動するとコネクタプ
ラグに光フアイバ１を取り付け、かしめ圧縮変形
した時にコネクタプラグの端面と光フアイバ１の
端面上の位置がずれ、接続損失の劣化を起すた
め、光フアイバ端面の移動量ΔLを接続損失劣化
に影響をおよぼさない範囲にとどめる必要があ
る。そのためかしめ圧縮変形率を規定することよ
り光フアイバ端面の移動量ΔLを規定することと
する。 If the tip of the optical fiber 1 moves, the position of the end face of the connector plug and the end face of the optical fiber 1 will shift when the optical fiber 1 is attached to the connector plug and compressed and deformed, causing deterioration of connection loss. It is necessary to keep the amount of movement ΔL within a range that does not affect connection loss deterioration. Therefore, by defining the crimp compression deformation rate, the amount of movement ΔL of the optical fiber end face is determined.
第３図の光フアイバ１の曲りから光フアイバ先
端部の移動量ΔLを定量的に評価するため、かし
め圧縮変形前後の体積が変化しないと仮定し、被
覆厚がt0からt1に変化したとき、幅方向の間隔p0
はp1＝（p0×t0／t1）に変化する。このため光フアイ
バ１はかしめ際に於て。厚み方向にΔt／２、幅方向
にΔp移動し、端面位置がｘ方向に移動する。光
フアイバ１に曲り形状を余弦曲線で近似すると、
その形状は式(1)で表わされ、光フアイバ１の端面
の移動量は(2)から求まる。 In order to quantitatively evaluate the amount of movement ΔL of the optical fiber tip from the bending of optical fiber 1 in Figure 3, it is assumed that the volume before and after crimping compression deformation does not change, and the coating thickness changes from t 0 to t 1 . When, widthwise spacing p 0
changes to p 1 = (p 0 ×t 0 /t 1 ). Therefore, when the optical fiber 1 is crimped. It moves by Δt/2 in the thickness direction, Δp in the width direction, and the end face position moves in the x direction. When the curved shape of optical fiber 1 is approximated by a cosine curve,
Its shape is expressed by equation (1), and the amount of movement of the end face of optical fiber 1 is determined from equation (2).
第４図ａに第７図に示すテープ心線について行
つたかしめ圧縮変形率と光フアイバ移動量の実験
値及び計算値を示す。なお図中で光フアイバのNo.
は並びの順にNo.１〜No.５としている。第４図ａよ
り光フアイバ表面の移動量ΔLを50μm以内に抑え
るには、かしめ変形圧縮率を35％以下にする必要
がある。 FIG. 4a shows experimental values and calculated values of the caulking compression deformation rate and the amount of optical fiber movement performed on the tape core shown in FIG. 7. In the diagram, the optical fiber No.
are numbered No. 1 to No. 5 in order of arrangement. From FIG. 4a, in order to suppress the amount of movement ΔL of the optical fiber surface within 50 μm, the crimping deformation compression ratio needs to be 35% or less.
第４図ｂに、かしめ圧縮変形率と張力による光
フアイバ端面の移動量の実験値を示す。かしめ長
さ４mm、８mmおよび12mmについてテープ心線に
0.5Kgの張力を加えて実験した。第４図ｂに示す
ように、光フアイバ端面はかしめ圧縮変形率15％
以下では急激に移動することが実験から判明し
た。以上により、かしめ圧縮変形率は15％以上35
％以下にする必要があることが分る。 FIG. 4b shows experimental values of the amount of movement of the optical fiber end face due to the crimp compression deformation rate and tension. For caulking lengths of 4mm, 8mm and 12mm, tape core wire
The experiment was conducted by applying a tension of 0.5 kg. As shown in Figure 4b, the optical fiber end face has a compression deformation rate of 15%.
Experiments have shown that it moves rapidly below. As a result of the above, the caulking compression deformation rate is 15% or more35
It turns out that it is necessary to keep it below %.
次にかしめ部に長さについて検討する。組立
て、接続操作時にテープ心線に加わる張力によ
り、光フアイバ１ｂが移動することがあり、必要
な耐張力を付与するにはかしめ長さを考慮する必
要がる。 Next, consider the length of the caulking part. The optical fiber 1b may move due to the tension applied to the tape core during assembly and connection operations, and it is necessary to consider the caulking length in order to provide the necessary tension resistance.
第５図は、かしめ圧縮変形率を25％とし、張力
を0.4，0.5，0.6Kgとした時のかしめ長さと光フア
イバ端面移動量11Lについて実験した値を示す。
第５図より、張力0.5Kgにおける光フアイバの移
動量を50μmに抑えるためには、かしめ長さを４
mm以上にする必要がある。 FIG. 5 shows experimental values for the crimping length and optical fiber end face movement amount 11L when the crimping compression deformation rate was 25% and the tension was 0.4, 0.5, and 0.6 kg.
From Figure 5, in order to suppress the amount of movement of the optical fiber to 50μm at a tension of 0.5Kg, the crimping length must be 4
Must be at least mm.
以上述べたようにかしめ圧縮変形率を規定する
ことで多心光フアイバ端面の位置決めが可能とな
り、かしめ長さを規定することで耐張力を実用的
な強度とすることができた。なお、光フアイバ端
面の間隙の許容値は、佐武、長沢、加島「プラス
チツク成形光フアイバ多心コネクタの設計と特
性」電子通信学会論文誌′85／３、vol.J68、No.３
より、軸ずれと端面間隙の複合による接続損失か
ら算出した。すなわち、1dB以内の接続損失を与
える条件は、光フアイバ位置決め用細径孔の位置
精度（すなわち軸ずれ）を4μmと仮定すると、端
面間隙100μmとなるため、端面間隙の許容値の配
分としてかしめ圧縮変形によるもの50μm、テー
プ心線に加えられる張力によるもの50μmの計
100μmとした。 As described above, by specifying the crimping compression deformation rate, the end face of the multi-core optical fiber can be positioned, and by specifying the crimping length, the tensile strength can be set to a practical strength. The allowable value for the gap between the end faces of the optical fibers is as follows: Satake, Nagasawa, Kashima, "Design and Characteristics of Plastic Molded Optical Fiber Multi-Fiber Connectors," Transactions of the Institute of Electronics and Communication Engineers '85/3, vol. J68, No. 3
Therefore, it was calculated from the connection loss due to the combination of axis misalignment and end face gap. In other words, the conditions for providing splice loss within 1 dB are assuming that the positional accuracy (i.e. axis misalignment) of the small diameter hole for optical fiber positioning is 4 μm, and the end face gap is 100 μm, so caulking compression is used to distribute the allowable value of the end face gap. A total of 50 μm due to deformation and 50 μm due to tension applied to the tape core wire.
It was set to 100 μm.
（実施例）
第１図は本考案のコネクタプラグの実施例であ
つて、第１図ａは斜視図、第１図ｂは断面図であ
る。１は光フアイバ、２ｂはテープ心線、３はフ
ラツトな形状を有するかしめ板、４は透明なふ
た、５はかしめ用ネジ、６はオネジを有し、図示
しないアダプタ（ガイドピンにより軸合わせされ
た２つのコネクタプラグを内包できるスリーブ状
のアダプタ）と結合するための締め輪、７は光フ
アイバの外径より若干大きな径を有する光フアイ
バ位置決め用細径孔、８は光フアイバ１を光フア
イバ位置決め用細径孔７へ導くガイド部分、９は
ガイドピン用穴、１０はテープ心線２ｂの被覆の
かしめ量を決めるかしめ用ストツパ、１１はコネ
クタプラグ後端部にあるテープ心線挿入口、１２
は長方形断面を有するテープ心線挿入穴、１３は
締め輪６の落下防止用のとめ具である。かしめ板
３の長さは６mmとした。(Embodiment) Fig. 1 shows an embodiment of the connector plug of the present invention, in which Fig. 1a is a perspective view and Fig. 1b is a sectional view. 1 is an optical fiber, 2b is a tape core, 3 is a caulking plate having a flat shape, 4 is a transparent lid, 5 is a caulking screw, 6 is a male screw, and an adapter (not shown) (axis aligned by a guide pin) a tightening ring for connecting the optical fiber 1 with a sleeve-shaped adapter that can accommodate two connector plugs; A guide portion leading to the narrow positioning hole 7, 9 a hole for a guide pin, 10 a caulking stopper that determines the amount of caulking of the tape core wire 2b, 11 a tape core wire insertion opening at the rear end of the connector plug, 12
1 is a tape core wire insertion hole having a rectangular cross section, and 13 is a stopper for preventing the tightening ring 6 from falling. The length of the caulking plate 3 was 6 mm.
本実施例の多心光フアイバ心線用コネクタプラ
グの組立では、テープ心線２ｂの被覆を除去した
後、光フアイバ１先端部分の良質な端面を得るた
め、応力破断法により複数の光フアイバの端面を
そろえて切断する。次にテープ心線挿入口１１よ
り、前記テープ心線２ｂを挿入する。この作業は
挿入口がテーパ状をなしているため容易に行え
る。 In the assembly of the multi-core optical fiber connector plug of this embodiment, after removing the covering of the tape core wire 2b, in order to obtain a high-quality end surface at the tip of the optical fiber 1, a plurality of optical fibers are assembled using a stress breaking method. Align the edges and cut. Next, the tape core wire 2b is inserted through the tape core wire insertion opening 11. This operation is easy because the insertion opening is tapered.
テープ心線はテープ心線挿入穴１２を通つて、
先端部に達する。先端部では透明なふた４より複
数本の光フアイバ１が確認でき、光フアイバは１
をガイド部分８より導き光フアイバ位置決め用細
径孔７へ挿入する。次に光フアイバ１をコネクタ
プラグの端面と同一面上に合せ、かしめ用ネジ５
を締めつけテープ心線２ｂの被覆をかしめ、光フ
アイバ１を固定する。この時かしめストツパ１０
はかしめ圧縮変形率が25％となるよう設定してい
るため、かしめ用ネジ５を締めつけるだけで規定
の変化率が得られる。 The tape core wire passes through the tape core wire insertion hole 12,
Reach the tip. At the tip, multiple optical fibers 1 can be confirmed through the transparent lid 4;
is guided from the guide portion 8 and inserted into the small diameter hole 7 for positioning the optical fiber. Next, align the optical fiber 1 on the same plane as the end surface of the connector plug, and tighten the caulking screw 5.
is tightened to caulk the covering of the tape core wire 2b and fix the optical fiber 1. At this time, caulking stopper 10
Since the crimping compression deformation rate is set to be 25%, the specified rate of change can be obtained simply by tightening the crimping screw 5.
なお、光フアイバ１とコネクタプラグの端面と
を同一面上に合わせるため、コネクタプラグ端面
にアクリル板等を密着させた状態で光フアイバを
突き当てる方法をとつた。 In order to align the optical fiber 1 and the end surface of the connector plug on the same plane, a method was used in which the optical fiber was butted against the end surface of the connector plug with an acrylic plate or the like in close contact with the end surface.
上記の組立て時間は２分以内であり、作業性が
良かつた。また透明なふたは上面が凸状のためレ
ンズ効果があり、ガイド部分が拡大され、複数本
の光フアイバ１の確認が容易であつた。 The above assembly time was within 2 minutes, and the workability was good. Further, since the transparent lid has a convex top surface, it has a lens effect, the guide portion is enlarged, and the plurality of optical fibers 1 can be easily confirmed.
本実施例の光フアイバ端面の移動量は、かしめ
圧縮変形率25％により約30μm、0.5Kgの張力印加
により50μmであり、合計80μmと推定でき、接続
損失1dB以内に抑えられている。 The amount of movement of the optical fiber end face in this example is approximately 30 μm when the crimping compression deformation rate is 25%, and 50 μm when a tension of 0.5 kg is applied, which can be estimated to be a total of 80 μm, and the splice loss is suppressed to within 1 dB.
第２図に本実施例のコネクタプラグの接続損失
値を示す。用いた光フアイバは、コア径約50μm、
クラツド径約125μmのGI型である。また測定条
件は、定常モード励振で、コネクタプラグ端面に
屈折率整合剤を使用している。接続損失の平均は
0.28dB、最大0.65dBと実用上問題のない範囲で
あつた。また、操作時の張力等による損失変化は
従来のコネクタと同程度であり、通常のコネクタ
操作では損失変化等による支障がないことが分つ
た。 FIG. 2 shows connection loss values of the connector plug of this example. The optical fiber used had a core diameter of approximately 50 μm,
It is a GI type with a cladding diameter of approximately 125 μm. The measurement conditions were steady mode excitation and a refractive index matching agent was used on the end face of the connector plug. The average connection loss is
It was 0.28 dB, and the maximum was 0.65 dB, which was within a range that did not pose any practical problems. Furthermore, it was found that the change in loss due to tension, etc. during operation was on the same level as that of conventional connectors, and that there was no problem due to change in loss during normal connector operation.
（考案の効果）
以上述べたように、本考案の多心光フアイバ心
線用コネクタプラグは、接着剤を用いることがな
いため、短時間で組立てができるという利点があ
る。またその接続損失についても実用上問題のな
い値が実現できている。(Effects of the Invention) As described above, the multi-core optical fiber connector plug of the present invention has the advantage that it can be assembled in a short time because no adhesive is used. Furthermore, the connection loss has been achieved at a value that does not pose any practical problems.
さらに光フアイバを挿入する挿入口が大きくて
挿入しやすく、光フアイバ位置決め用細径孔のガ
イド部分の上に設けた透明なふたにより、複数本
の光フアイバの配列が確認できため、作業性が良
いという利点がある。また、かしめ用のネジをゆ
るめることにより、多心光フアイバ心線用コネク
タプラグの再使用ができるという利点がある。 Furthermore, the insertion port for inserting the optical fibers is large and easy to insert, and the transparent lid provided above the guide part of the small diameter hole for optical fiber positioning allows the alignment of multiple optical fibers to be confirmed, improving work efficiency. It has the advantage of being good. Another advantage is that the multi-core optical fiber connector plug can be reused by loosening the caulking screw.
第１図は、本考案の多心光フアイバ心線用コネ
クタプラグの一実施例を示す図、第２図は、本実
施例の多心光フアイバ心線用コネクタプラグの接
続損失値の分布を示す図、第３図は、テープ心線
をかしめ圧縮変形した時の光フアイバ端面の移動
量を示す図、第４図ａは、かしめ圧縮変形率と光
フアイバ移動量の実験値及び計算値を示す図、第
４図ｂは、かしめ圧縮変形率と張力による光フア
イバ端面の移動量の実験値を示す図、第５図は、
張力をパラメータとした場合の、かしめのさと光
フアイバ端面移動量の実験値を示す図、第６図
は、単心線の構造を示す図、第７図は、テープ心
線の構造を示す図、第８図は、従来の多心光コネ
クタの中子部品の構造を示す斜視図、第９図は、
従来の単心光コネクタの構造を示す側面図であ
る。
１……光フアイバ、２ａ……単心線、２ｂ……
テープ心線、３……かしめ板、４……透明なふ
た、５……かしめ用ネジ、６……締め輪、７……
光フアイバ位置決め用細径孔、８……ガイド部
分、９……ガイドピン用穴、１０……かしめ用ス
トツパ、１１……テープ心線挿入口、１２……テ
ープ心線挿入穴、１３……締め輪用落下防止とめ
具、１０１……中子フエルール、１０２……中子
ふた、１０３……光フアイバ位置決め用細径孔、
１０４……ガイドピン用穴、１０５……接着剤注
入穴、２０１……光フアイバ位置決め用細径孔、
２０２……中子、２０３……カツプリングナツ
ト、２０４……スプリング、２０５……ハウス
筒、２０６……かしめ機構、２０７……クランス
リーブ、２０７ａ……かしめ部、２０７ｂ……外
周オネジ部、２０８……クランプナツト、２０８
ａ……内周メネジ、２０９……パイプ。
FIG. 1 is a diagram showing an embodiment of the multi-core optical fiber connector plug of the present invention, and FIG. 2 is a diagram showing the distribution of connection loss values of the multi-core optical fiber connector plug of the present embodiment. Figure 3 shows the amount of movement of the end face of the optical fiber when the tape core wire is compressed and deformed by crimping, and Figure 4a shows the experimental and calculated values of the crimping compression deformation rate and the amount of optical fiber movement. Figure 4b is a diagram showing experimental values of the amount of movement of the optical fiber end face due to crimping compression deformation rate and tension, and Figure 5 is
Figure 6 shows the experimental values of caulking and optical fiber end face movement when tension is used as a parameter. Figure 6 shows the structure of a single fiber. Figure 7 shows the structure of a tape core. , FIG. 8 is a perspective view showing the structure of the core component of a conventional multi-core optical connector, and FIG.
FIG. 2 is a side view showing the structure of a conventional single-core optical connector. 1...Optical fiber, 2a...Single core wire, 2b...
Tape core wire, 3... crimping plate, 4... transparent lid, 5... crimping screw, 6... tightening ring, 7...
Small diameter hole for optical fiber positioning, 8... Guide portion, 9... Hole for guide pin, 10... Stopper for caulking, 11... Tape cable insertion opening, 12... Tape cable insertion hole, 13... Fall prevention stopper for tightening ring, 101... core ferrule, 102... core lid, 103... small diameter hole for optical fiber positioning,
104...Guide pin hole, 105...Glue injection hole, 201...Small diameter hole for optical fiber positioning,
202...core, 203...coupling nut, 204...spring, 205...house tube, 206...caulking mechanism, 207...clan sleeve, 207a...caulking part, 207b...outer periphery male thread part, 208 ... Clamp Nut, 208
a...Inner circumference female thread, 209...pipe.
Claims (1)
先端の被覆を除去し、前記光フアイバの端面を
そろえて応力破断により端面形成したテープ心
線を装着する多心光フアイバ心線用コネクタプ
ラグにおいて、 前記コネクタプラグの端面に前記光フアイバ
の外形より若干大きな径を有する複数の細径孔
が平行に配列された光フアイバ位置決め用細径
孔と、２つのガイドピン用穴を有し、 かつ前記コネクタプラグの後端部にあるテー
プ心線挿入口と、 前記テープ心線挿入口と前記光フアイバ位置
決め用細径孔とを接続する長方形断面を有する
テープ心線挿入穴と、 前記テープ心線挿入穴と前記光フアイバ位置
決め用細径孔との接続部に個々の光フアイバを
前記光フアイバ位置決め用細径孔に導くための
ガイド部分と、 前記ガイド部分の上にあつてガイド部分を観
察できる透明なふたと、 前記テープ心線挿入穴の途中の一部に設置さ
れたテープ心線を押さえるためのかしめ板と、 前記かしめ板を押えるかしめ用ネジと、 光フアイバ心線のかしめ圧縮変形率を規定す
るため前記かしめ板をとめるかしめストツパを
有することを特長とする多心光フアイバ心線用
コネクタプラグ。 ２ かしめストツパをかしめ圧縮変形率が15％な
いし35％になるように設定し、かつかしめ板の
長さを４mm以上としたことを特長とする実用新
案登録請求の範囲第１項に記載の多心光フアイ
バ心線用コネクタプラグ。[Claims for Utility Model Registration] 1. A multi-fiber core in which the coating of the tip of a tape fiber in which optical fibers are assembled into a plurality of cores is removed, the end faces of the optical fibers are aligned, and a tape core wire is attached in which the end faces are formed by stress rupture. In the optical fiber connector plug, the end face of the connector plug includes a thin optical fiber positioning hole in which a plurality of thin holes having a diameter slightly larger than the outer diameter of the optical fiber are arranged in parallel, and two guide pins. and a tape fiber insertion port having a rectangular cross section that connects the tape fiber insertion port and the optical fiber positioning small diameter hole at the rear end of the connector plug. a hole; a guide portion for guiding each optical fiber to the optical fiber positioning thin hole at a connecting portion between the tape core insertion hole and the optical fiber positioning thin hole; and a guide portion on the guide portion. a transparent lid that allows the guide portion to be observed; a caulking plate for holding the tape core installed in a part of the way of the tape fiber insertion hole; a caulking screw for pressing the caulking plate; and an optical fiber. A connector plug for a multi-core optical fiber, characterized in that it has a caulking stopper that stops the caulking plate in order to define the caulking compression deformation rate of the conductor. 2. The utility model as set forth in paragraph 1 of the claims for registration of a utility model, characterized in that the caulking stopper is set so that the caulking compression deformation rate is 15% to 35%, and the length of the caulking plate is 4 mm or more. Connector plug for Shinko fiber core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986121041U JPH0453609Y2 (en) | 1986-08-08 | 1986-08-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986121041U JPH0453609Y2 (en) | 1986-08-08 | 1986-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6329108U JPS6329108U (en) | 1988-02-25 |
| JPH0453609Y2 true JPH0453609Y2 (en) | 1992-12-16 |
Family
ID=31009933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986121041U Expired JPH0453609Y2 (en) | 1986-08-08 | 1986-08-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453609Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007121672A (en) * | 2005-10-28 | 2007-05-17 | Hitachi Cable Ltd | On site assembling type optical connector |
| JP5224317B2 (en) * | 2006-11-20 | 2013-07-03 | 古河電気工業株式会社 | Optical waveguide component and method for manufacturing optical waveguide component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5681806A (en) * | 1979-12-07 | 1981-07-04 | Toshiba Corp | Optical fiber connector |
| JPS58152215A (en) * | 1982-03-05 | 1983-09-09 | Agency Of Ind Science & Technol | Connector of optical fiber |
| JPS5949510A (en) * | 1982-09-16 | 1984-03-22 | Furukawa Electric Co Ltd:The | Multicored connector for optical cable |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168705U (en) * | 1982-05-07 | 1983-11-10 | 日本電信電話株式会社 | Multi-core optical fiber connector parts |
| JPS5968312U (en) * | 1982-10-29 | 1984-05-09 | 和泉電気株式会社 | Optical fiber connection device |
| JPS60107907U (en) * | 1983-12-26 | 1985-07-23 | 富士通株式会社 | fiber optic connector |
-
1986
- 1986-08-08 JP JP1986121041U patent/JPH0453609Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5681806A (en) * | 1979-12-07 | 1981-07-04 | Toshiba Corp | Optical fiber connector |
| JPS58152215A (en) * | 1982-03-05 | 1983-09-09 | Agency Of Ind Science & Technol | Connector of optical fiber |
| JPS5949510A (en) * | 1982-09-16 | 1984-03-22 | Furukawa Electric Co Ltd:The | Multicored connector for optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6329108U (en) | 1988-02-25 |
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