JPH05333238A - Optical fiber connector - Google Patents
Optical fiber connectorInfo
- Publication number
- JPH05333238A JPH05333238A JP31156192A JP31156192A JPH05333238A JP H05333238 A JPH05333238 A JP H05333238A JP 31156192 A JP31156192 A JP 31156192A JP 31156192 A JP31156192 A JP 31156192A JP H05333238 A JPH05333238 A JP H05333238A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- optical fiber
- cores
- connector
- fiber connector
- 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.)
- Granted
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光通信に用いられる光
ファイバーの接続を行う光ファイバーコネクタに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber connector for connecting optical fibers used for optical communication.
【０００２】[0002]
【従来技術及びその課題】従来の光ファイバーコネクタ
（以下、単にコネクタと称す）は、図３に示すように、
ファイバーＦ１，Ｆ２同士の先端を完全に軸が合致した
状態で接続すべく、ファイバーＦ１，Ｆ２の外径と該フ
ァイバーＦ１，Ｆ２を挿入する金属、あるいはセラミッ
クより成る中子Ｎ１，Ｎ２にあけた細孔Ｈの径との差を
小さくすることが必要であり、また、この中子Ｎ１，Ｎ
２に開けた細孔Ｈの中心と、中子Ｎ１，Ｎ２の外径の中
心を一致させたうえで、同時に２つのファイバーＦ１，
Ｆ２の中心を一致させるため、スリーブＢに対し、中子
Ｎ１，Ｎ２を高精度な位置関係のもとに、かつ、先端面
がバネＤにより適度な圧力で密着した状態で挿入され、
固定されることによって両ファイバーＦ１，Ｆ２を接続
するようにしたコネクタが用いられている。2. Description of the Related Art A conventional optical fiber connector (hereinafter simply referred to as "connector") has a structure as shown in FIG.
In order to connect the tips of the fibers F1 and F2 to each other with their axes completely matched, the outer diameters of the fibers F1 and F2 and the cores N1 and N2 made of metal or ceramic into which the fibers F1 and F2 are inserted are opened. It is necessary to reduce the difference from the diameter of the pores H, and the cores N1, N
After making the centers of the pores H opened in 2 and the centers of the outer diameters of the cores N1, N2 coincide with each other, the two fibers F1,
In order to match the centers of F2, the cores N1 and N2 are inserted into the sleeve B in a highly precise positional relationship, and the tip end surface is closely contacted by the spring D with an appropriate pressure,
A connector is used that connects both fibers F1 and F2 by being fixed.
【０００３】従来のスリーブＢは主にリン青銅等の銅合
金で構成される。また、中子Ｎ１、Ｎ２はアルミナセラ
ミックまたはステンレス鋼などが主に使用されているが
金属よりもセラミックの方が、高硬度で細孔Ｈの加工が
容易なだけでなく、摺り傷や磨耗が生じにくいので長期
に亘っての使用に優れる。The conventional sleeve B is mainly composed of a copper alloy such as phosphor bronze. Alumina ceramics or stainless steels are mainly used for the cores N1 and N2, but ceramics are not only harder than metals but also have a high hardness and are easy to process the pores H, and also have scratches and abrasions. Since it does not easily occur, it is excellent for long-term use.
【０００４】ところが、従来の中子Ｎ１、Ｎ２は、先端
面同士が密着しにくく、そのため、中子Ｎ１、Ｎ２の先
端面中心に露出するファイバーＦ１、Ｆ２同士の間に空
気層が介在して端面反射が生じ、接続損失が増大すると
いう課題を有している。However, in the conventional cores N1 and N2, it is difficult for the tip surfaces to come into close contact with each other. Therefore, an air layer is interposed between the fibers F1 and F2 exposed at the center of the tip surfaces of the cores N1 and N2. There is a problem that end face reflection occurs and connection loss increases.
【０００５】その結果、中心が一致し、先端面が密着し
た良好なる状態でファイバーを接続し得るコネクタを得
ることが極めて困難であった。As a result, it has been extremely difficult to obtain a connector capable of connecting fibers in a good state where the centers are aligned and the tip surfaces are in close contact.
【０００６】本発明は、上述に鑑みて、構造が簡単でし
かも高精度にファイバーの接続を可能とするコネクタを
提供せんとするものである。In view of the above, the present invention provides a connector having a simple structure and capable of connecting fibers with high precision.
【０００７】[0007]
【課題を解決するための手段】そこで本発明は、中心軸
上の細孔に光ファイバーを装着した一対の中子同士の先
端面を当接させる接続構造を有する光ファイバーコネク
タにおいて、前記中子をジルコニアセラミックで形成し
たものである。In view of the above, the present invention provides an optical fiber connector having a connection structure in which the tip surfaces of a pair of cores having optical fibers mounted in the pores on the central axis are brought into contact with each other, and the core is made of zirconia. It is made of ceramic.
【０００８】[0008]
【実施例】以下、本発明に係るコネクタの実施例を図に
よって具体的に詳述する。図１は、本実施例に係るコネ
クタ１の連結状態を示す縦断面図である。このコネクタ
１は図２（ａ）（ｂ）にて分離して示す如く第１プラグ
Ｐ１、第２プラグＰ２でもって構成される。このうち第
１プラグＰ１は、同図（ａ）に示す如くファイバーＦ１
が挿入される細孔２ａが穿設されたジルコニア製のセラ
ミック中子２の外部に合成樹脂を鋳込成型して本体３を
成している。この場合本体３はセラミック中子２の一端
側には細孔２ａを中心線とし、該細孔２ａに連通し、フ
ァイバーＦ１を挿通するための貫通孔３ａがあけられて
おり、またセラミック中子２の他端側には後述する第２
プラグＰ２のセラミック中子４の挿入を許容する挿入口
３ｂを備えるとともに、外周部にはネジ溝３ｃが施して
ある。なお、セラミック中子２の外周には本体３中にて
回転防止、脱落防止などの目的で凹部２ｂや図示しない
突起などが形成してあり、また、本体３には上記挿入口
３ｂと外部を連通する抜気孔３ｄが穿設してある。次に
同図（ｂ）には第２プラグＰ２が示してあり、セラミッ
ク中子４のほぼ前半部が突出し、後半部が合成樹脂より
成る本体５に鋳込み埋設され、かつ、このセラミック中
子４にあけられた細孔４ａの中心線と合致する如く、本
体５にはファイバーＦ２の挿通孔５ａが穿設してある。
なお、セラミック中子４の外周部には、回転防止や脱落
防止などの目的でもって凹部４ｂや図示しない突起など
が形成してある。さらに、この本体５には段部５ｂが形
成してあり、この段部５ｂに係止する如く、一端にフラ
ンジ部６ａを有し、他端側の内周部分にネジ溝６ｂが形
成されたネジリング６を具備することによって第２プラ
グＰ２が構成されている。Embodiments of the connector according to the present invention will be specifically described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view showing a connected state of a connector 1 according to this embodiment. The connector 1 is composed of a first plug P1 and a second plug P2 as shown separately in FIGS. 2 (a) and 2 (b). Of these, the first plug P1 is the fiber F1 as shown in FIG.
The main body 3 is formed by casting a synthetic resin outside the ceramic core 2 made of zirconia and having the pores 2a into which the holes are inserted. In this case, the main body 3 has a through hole 3a at one end side of the ceramic core 2 with the fine hole 2a as a center line and communicating with the fine hole 2a for inserting the fiber F1. The other end of 2 has a second
The plug P2 is provided with an insertion port 3b that allows the insertion of the ceramic core 4, and a thread groove 3c is formed on the outer peripheral portion. In addition, a concave portion 2b and a protrusion (not shown) are formed on the outer periphery of the ceramic core 2 in the main body 3 for the purpose of preventing rotation and falling off, and the main body 3 has the insertion port 3b and the outside. A vent hole 3d communicating with each other is provided. Next, FIG. 2B shows the second plug P2, in which substantially the front half of the ceramic core 4 projects, and the rear half is cast and embedded in the main body 5 made of synthetic resin. An insertion hole 5a for the fiber F2 is formed in the main body 5 so as to coincide with the center line of the fine hole 4a formed in the main body 5.
A concave portion 4b and a protrusion (not shown) are formed on the outer peripheral portion of the ceramic core 4 for the purpose of preventing rotation and falling off. Further, a step portion 5b is formed on the main body 5, a flange portion 6a is provided at one end so as to be locked to the step portion 5b, and a screw groove 6b is formed at an inner peripheral portion on the other end side. The second plug P2 is configured by including the screw ring 6.
【０００９】ところで、このようなプラグＰ１，Ｐ２の
製法としては、第１プラグＰ１，第２プラグＰ２及びネ
ジリング６の金型を作製し、前者については、それぞれ
の金型内にセラミック中子２、４を固定し、細孔２ａ及
び４ａに樹脂が入らないように密閉した後、金型内に樹
脂を射出する。樹脂が固化した後、金型から取り出し、
密閉に用いた部品を取り、バリ等余分な部分を取り除く
ことによって作られる。ネジリング６については、金型
へ樹脂を射出し、固化した後取り出し、余分な部分を取
り除き作製する。By the way, as a method of manufacturing such plugs P1 and P2, a mold of the first plug P1 and the second plug P2 and the screw ring 6 is manufactured, and in the former case, the ceramic core 2 is formed in each mold. 4 is fixed and sealed so that the resin does not enter the pores 2a and 4a, and then the resin is injected into the mold. After the resin has solidified, remove it from the mold,
It is made by taking the parts used for sealing and removing excess parts such as burrs. The screw ring 6 is manufactured by injecting a resin into a mold, solidifying it, and then taking it out, removing an excessive portion.
【００１０】なお、上記セラミック中子２、４は、従来
周知のジルコニアセラミックの製法、例えばＺｒＯ2 を
主成分とし、Ｙ2 Ｏ3 、ＭｇＯ、ＣａＯなどの安定化剤
を含むジルコニア原料を所定形状に成形し、１４００〜
１６００℃の温度で焼成することによって得られるもの
である。The above-mentioned ceramic cores 2 and 4 are made of a conventionally known zirconia ceramic, for example, ZrO 2 as a main component and a zirconia raw material containing a stabilizer such as Y 2 O 3 , MgO or CaO in a predetermined shape. Molded into 1400
It is obtained by firing at a temperature of 1600 ° C.
【００１１】上述のように構成された第１プラグＰ１、
第２プラグＰ２は図１の如く連結され、ファイバーＦ
１，Ｆ２を接続するが、この場合、ファイバーＦ１を挿
入した第１プラグＰ１の挿入口３ｂに対し、ファイバー
Ｆ２を挿入した第２プラグＰ２のセラミック中子４を差
し込んだ後、第１プラグに形成したネジ溝３ｃに、第２
プラグＰ２のネジリング６を螺入することによって、第
１及び第２プラグＰ１，Ｐ２は機械的に結合され、ファ
イバーＦ１，Ｆ２は相互に中心が一致し、かつ、先端面
が当接し密着した状態にて接続される。なお、ファイバ
ーＦ１，Ｆ２は第１、第２プラグＰ１，Ｐ２の本体３、
５にあけた貫通孔３ａ，５ａに挿入された後、該貫通孔
３ａ，５ａ中に接着剤を注入することによって固定され
る。The first plug P1 constructed as described above,
The second plug P2 is connected as shown in FIG.
1, F2 are connected, but in this case, after inserting the ceramic core 4 of the second plug P2 in which the fiber F2 is inserted into the insertion port 3b of the first plug P1 in which the fiber F1 is inserted, In the formed thread groove 3c, the second
A state in which the first and second plugs P1 and P2 are mechanically coupled by screwing the screw ring 6 of the plug P2, the fibers F1 and F2 have their centers coincident with each other, and their tip surfaces are in contact and in close contact with each other. Will be connected at. The fibers F1 and F2 are the main bodies 3 of the first and second plugs P1 and P2,
After being inserted into the through holes 3a, 5a opened in 5, the adhesive is injected into the through holes 3a, 5a to be fixed.
【００１２】[0012]
【効果】上述の如く本発明は、中心軸上の細孔に光ファ
イバーを装着した一対の中子同士の先端面を当接させる
接続構造を有する光ファイバーコネクタにおいて、前記
中子をジルコニアセラミックで形成したことによって、
ファイバーを挿入する細孔の内径公差および内外径の同
軸度を高精度に機械加工を施すことができ、またセラミ
ックの場合多結晶体であることから、細孔壁面が微小な
突起（結晶）によって構成されているため、ファイバー
との摩擦面が少なく、それ故、細孔へのファイバーの挿
入が容易となる。As described above, the present invention is an optical fiber connector having a connection structure in which the tip surfaces of a pair of cores having optical fibers mounted in the pores on the central axis are brought into contact with each other, and the core is made of zirconia ceramic. By
The inner diameter tolerance of the pores into which the fiber is inserted and the concentricity of the inner and outer diameters can be machined with high accuracy, and in the case of ceramics, since it is a polycrystalline body, the pore wall surface is formed by minute protrusions (crystals). Since it is configured, the friction surface with the fiber is small, and therefore the fiber can be easily inserted into the pores.
【００１３】また、ジルコニアセラミックは高硬度であ
るがアルミナセラミックに比べてヤング率が１／３程度
で適度な弾性を有する。したがって、中子同士はその先
端面が当接すると弾性変形で密着し易く、中子の中心軸
上に装着した光ファイバー同士が密着して端面反射が無
く高い接続性能を有する光ファイバーコネクタを得るこ
とができる。Further, zirconia ceramic has a high hardness, but has a Young's modulus of about 1/3 and an appropriate elasticity as compared with alumina ceramics. Therefore, when the tip surfaces of cores come into contact with each other, they are easily elastically adhered to each other, and the optical fibers mounted on the central axis of the cores are adhered to each other to obtain an optical fiber connector having no end-face reflection and high connection performance. it can.
【００１４】また、この適度な弾性および高強度の特性
によって衝突による割れや欠けの心配が少ないので、取
扱いの容易な光ファイバーコネクタになる。Further, due to the characteristics of moderate elasticity and high strength, there is little fear of cracking or chipping due to collision, so that the optical fiber connector is easy to handle.
【図１】本発明の一実施例に係る光ファイバーコネクタ
によってファイバーを接続した状態を示す縦断面図であ
る。FIG. 1 is a vertical cross-sectional view showing a state in which fibers are connected by an optical fiber connector according to an embodiment of the present invention.
【図２】図１に示す光ファイバーコネクタを分離した状
態を示すもので、（ａ）は第１プラグＰ１の縦断面図、
（ｂ）は第２プラグＰ２の縦断面図である。FIG. 2 shows a state in which the optical fiber connector shown in FIG. 1 is separated, and (a) is a vertical sectional view of a first plug P1,
(B) is a longitudinal sectional view of the second plug P2.
【図３】従来の光ファイバーコネクタの例を示す縦断面
図である。FIG. 3 is a vertical sectional view showing an example of a conventional optical fiber connector.
Ｐ１ 第１プラグ Ｐ２ 第２プラグ １ コネクタ ２、４ セラミック中子 ３、５ 本体 ６ ネジリング P1 1st plug P2 2nd plug 1 Connector 2, 4 Ceramic core 3, 5 Main body 6 Screw ring
───────────────────────────────────────────────────── フロントページの続き (72)発明者 湯川 勲 京都府京都市山科区東野北井ノ上町５番地 の22 京セラ株式会社内 (72)発明者 神原 敏行 京都府京都市山科区東野北井ノ上町５番地 の22 京セラ株式会社内 (72)発明者 鈴木 洋司 京都府京都市山科区東野北井ノ上町５番地 の22 京セラ株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Yukawa 5 Kyocera Co., Ltd. 5-5 Higashino Kitanoinokami-cho, Yamashina-ku, Kyoto Prefecture (72) Inventor Toshiyuki Kambara 5 Higashino-Inoue-cho, Yamashina-ku, Kyoto-shi, Kyoto Prefecture Address of 22 Kyocera Co., Ltd. (72) Inventor Yoji Suzuki 5 of 22 Kyocera Co., Ltd. Higashino Kitano Inouemachi, Yamashina-ku, Kyoto City, Kyoto Prefecture
Claims (1)
同士の先端面を当接させる接続構造を有する光ファイバ
ーコネクタにおいて、前記中子がジルコニアセラミック
で形成されたことを特徴とする光ファイバーコネクタ。1. An optical fiber connector having a connection structure in which the tip surfaces of a pair of cores, each having an optical fiber mounted in a pore, are brought into contact with each other, wherein the core is made of zirconia ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311561A JPH0830775B2 (en) | 1992-11-20 | 1992-11-20 | Fiber optic connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311561A JPH0830775B2 (en) | 1992-11-20 | 1992-11-20 | Fiber optic connector |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11262484A Division JPS60256106A (en) | 1984-05-31 | 1984-05-31 | Optical fiber connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05333238A true JPH05333238A (en) | 1993-12-17 |
| JPH0830775B2 JPH0830775B2 (en) | 1996-03-27 |
Family
ID=18018717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4311561A Expired - Lifetime JPH0830775B2 (en) | 1992-11-20 | 1992-11-20 | Fiber optic connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0830775B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358874B1 (en) | 1997-11-28 | 2002-03-19 | Kyocera Corporation | Zirconium ceramic material, optical fiber connector member using the same, and method of producing the same |
| US6435731B1 (en) | 1999-10-01 | 2002-08-20 | Ykk Corporation | Ferrule having optical fiber incorporated therein as an integral part thereof and method for production thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55108608A (en) * | 1979-02-13 | 1980-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber splicer |
-
1992
- 1992-11-20 JP JP4311561A patent/JPH0830775B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55108608A (en) * | 1979-02-13 | 1980-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber splicer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358874B1 (en) | 1997-11-28 | 2002-03-19 | Kyocera Corporation | Zirconium ceramic material, optical fiber connector member using the same, and method of producing the same |
| US6435731B1 (en) | 1999-10-01 | 2002-08-20 | Ykk Corporation | Ferrule having optical fiber incorporated therein as an integral part thereof and method for production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0830775B2 (en) | 1996-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |