JPH0750217B2 - Optical connector ferrule - Google Patents
Optical connector ferruleInfo
- Publication number
- JPH0750217B2 JPH0750217B2 JP61283058A JP28305886A JPH0750217B2 JP H0750217 B2 JPH0750217 B2 JP H0750217B2 JP 61283058 A JP61283058 A JP 61283058A JP 28305886 A JP28305886 A JP 28305886A JP H0750217 B2 JPH0750217 B2 JP H0750217B2
- Authority
- JP
- Japan
- Prior art keywords
- ferrule
- optical fiber
- hole
- diameter hole
- optical 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.)
- Expired - Lifetime
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
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/3889—Anchoring optical cables to connector housings, e.g. strain relief features using encapsulation for protection, e.g. adhesive, molding or casting resin
-
- 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
- G02B6/3835—Means for centering or aligning the light guide within the ferrule using discs, bushings or the like
- G02B6/3837—Means for centering or aligning the light guide within the ferrule using discs, bushings or the like forwarding or threading methods of light guides into apertures of ferrule centering means
-
- 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
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Description
【発明の詳細な説明】 〔概 要〕 本発明は、光コネクタにおいて、フェルールへのファイ
バ固定作業を簡易化する為、ファイバとフェルールの互
いの少くとも接合部分を共に超音波溶着可能な樹脂で形
成し、ファイバをフェルール内に挿通した後に超音波に
て溶着接合する。フェルールには超音波溶着時の変形し
ろとして作用するスリットが形成される。これにより接
続作業、並びにそのための準備作業（接着剤の塗付及び
ファイバの皮むき作業等）が大幅に簡略化される。DETAILED DESCRIPTION OF THE INVENTION [Outline] In order to simplify the work of fixing a fiber to a ferrule in an optical connector, the present invention uses a resin that can be ultrasonically welded together at least at the joint between the fiber and the ferrule. After forming and inserting the fiber into the ferrule, ultrasonic welding is performed. The ferrule is formed with a slit that acts as a deformation margin during ultrasonic welding. As a result, the connection work and the preparation work therefor (adhesive coating, fiber peeling work, etc.) are greatly simplified.
本発明は一対の光ファイバをフェルールを用いて接続す
る光コネクタ、特にそのフェルールの構造に関する。The present invention relates to an optical connector for connecting a pair of optical fibers using a ferrule, and more particularly to the structure of the ferrule.
第7,8図に従来の光コネクタ構造と光ファイバ構造を示
す。Figures 7 and 8 show the conventional optical connector structure and optical fiber structure.
第7,8図においてフェルール１内には段付の中心孔３が
形成され、その大径部3a内に光ファイバ５の２次コート
７が挿入され、小径部3bには光ファイバ９が挿入され
る。光ファイバ５は第８図に示す如く光ファイバ９の外
側に２次コート７、ケブラー（商品名）と称されるテン
ション部材11、及び保護外被13が形成される。尚、光フ
ァイバと２次コートとの間にその外周に１次コート（図
示せず）が施される。In FIGS. 7 and 8, a stepped center hole 3 is formed in the ferrule 1, the secondary coat 7 of the optical fiber 5 is inserted in the large diameter portion 3a, and the optical fiber 9 is inserted in the small diameter portion 3b. To be done. As shown in FIG. 8, the optical fiber 5 has a secondary coat 7, a tension member 11 called Kevlar (trade name), and a protective jacket 13 formed on the outside of the optical fiber 9. A primary coat (not shown) is applied to the outer circumference between the optical fiber and the secondary coat.
フェルール１と光ファイバとの結合はフェルール１内及
びパイプ19内に充てんされる接着剤15により行われる。
接着剤15はフェルール１の中心孔３内において２次コー
ト７を接着し、一方、パイプ19内においては２次コート
７、テンション部材11、及び外被13を接着する。テンシ
ョン部材11は外被13部分を皮むきすることにより露出せ
しめられる。テンション部材11はフェルール（１）とパ
イプ19との間の隙間に延ばされ固定される。パイプ19は
フェルール１のフランジ２に同軸的に押し当てられ接着
剤15の充てん空間を提供する。The ferrule 1 and the optical fiber are coupled by the adhesive 15 filled in the ferrule 1 and the pipe 19.
The adhesive 15 adheres the secondary coat 7 in the center hole 3 of the ferrule 1, while adhering the secondary coat 7, the tension member 11, and the jacket 13 in the pipe 19. The tension member 11 is exposed by peeling the outer cover 13 portion. The tension member 11 is extended and fixed in the gap between the ferrule (1) and the pipe 19. The pipe 19 is coaxially pressed against the flange 2 of the ferrule 1 to provide a space filled with the adhesive 15.
フェルールは締結用ナット部材４内に挿入され、適当な
アダプタ（図示せず）によりナット部材４内に固定保持
される。接合すべき他方の光ファイバを保持した同様の
フェルール１′がフェルール１に端面一端面接合され、
光ファイバどうしが同軸接合される。The ferrule is inserted into the fastening nut member 4 and fixedly held in the nut member 4 by a suitable adapter (not shown). A similar ferrule 1 ′ holding the other optical fiber to be joined is joined to the ferrule 1 at one end face and one end face,
The optical fibers are coaxially spliced.
従来の光コネクタはフェルールとの接合を光ファイバの
主として２次コートとテンション部材を接着剤にてフェ
ルールに固定することにより行っており、接着剤の流し
込み作業が厄介であるのみならず特にテンション部材を
露出させるための外被の皮むき作業が面倒であり組立作
業に時間がかかるという問題があった。The conventional optical connector is joined to the ferrule by mainly fixing the secondary coat of the optical fiber and the tension member to the ferrule with an adhesive. Not only is the operation of pouring the adhesive cumbersome, but especially the tension member. There is a problem in that the work of peeling the outer cover to expose the parts is troublesome and the assembly work takes time.
本発明の目的は接着剤を使用せずかつ上述の如き光ファ
イバの皮むき作業を不要にしたフェルールと光ファイバ
との接合構造を提供することにある。It is an object of the present invention to provide a joining structure of a ferrule and an optical fiber which does not use an adhesive agent and does not require the above-mentioned optical fiber peeling work.
上記の目的を達成するために本発明によれば、光ファイ
バの外周に超音波溶着可能な樹脂で形成した２次コート
を被覆した光ファイバを結合すべきフェルールを有する
光コネクタにおいて、光ファイバを挿通すべきフェルー
ルの中心孔を２次コート用の大径孔とファイバコア用の
小径孔とから成る段付孔とすると共に上記大径孔の少く
とも内周面近傍を超音波溶着可能な樹脂により形成し、
上記大径孔を形成するフェルール部分に超音波溶着時の
フェルールの変形しろを吸収する孔軸線方向に延びる複
数個のスリットを形成したことを特徴とする光コネクタ
用フェルールが提供される。In order to achieve the above object, according to the present invention, in an optical connector having a ferrule to which an optical fiber coated with a secondary coat formed of a resin capable of ultrasonic welding is coupled, is provided in the optical fiber. A resin which can be ultrasonically welded to the center hole of the ferrule to be inserted is a stepped hole consisting of a large-diameter hole for secondary coating and a small-diameter hole for fiber core and at least the vicinity of the inner peripheral surface of the large-diameter hole. Formed by
There is provided a ferrule for an optical connector, characterized in that a plurality of slits extending in the axial direction of the hole are formed in the ferrule portion forming the large-diameter hole to absorb the deformation margin of the ferrule during ultrasonic welding.
超音波溶着可能な樹脂で形成した光ファイバをフェルー
ルの同様に超音波溶着可能な樹脂で形成した中心孔内に
挿通し、これらを超音波にて加熱溶融するだけで光ファ
イバはフェルールに固着される。超音波溶着時のフェル
ールの変形しろはスリットにより有効に吸収される。An optical fiber made of a resin that can be ultrasonically welded is inserted into the center hole made of a resin that can be ultrasonically welded like a ferrule, and these are heated and melted by ultrasonic waves to fix the optical fiber to the ferrule. It The deformation margin of the ferrule during ultrasonic welding is effectively absorbed by the slit.
〔実施例〕 第1,2図は本発明に係るフェルールの一実施例を示す。[Embodiment] FIGS. 1 and 2 show an embodiment of a ferrule according to the present invention.
フェルール31はその中心に大径孔33aと小径孔33bとから
成る段付孔33を有することは第７の場合と同様である
が、本実施例ではフェルール31は超音波溶着可能な樹脂
（例えば芳香族ポリエステル）により形成されているの
が特徴である。尚、一般にはフェルールはセラミック等
により形成される。そして、大径部3aを構成するフェル
ール部分37には中心孔33の軸線方向に延びる複数個（図
では４個）のスリット36が形成されている。スリット36
は光ファイバの２次コート７（第４図）を超音波溶着す
る時の変形しろとして機能する。Although the ferrule 31 has the stepped hole 33 including the large diameter hole 33a and the small diameter hole 33b in the center thereof, it is similar to the seventh case, but in the present embodiment, the ferrule 31 is made of a resin (for example, ultrasonically weldable resin). It is characterized by being formed of an aromatic polyester). The ferrule is generally made of ceramic or the like. A plurality of (four in the figure) slits 36 extending in the axial direction of the central hole 33 are formed in the ferrule portion 37 that constitutes the large diameter portion 3a. Slit 36
Serves as a deformation margin when ultrasonically welding the secondary coat 7 (FIG. 4) of the optical fiber.
本発明において用いられる光ファイバは第４図に示され
る如く、光ファイバ９の外側に２次コート７が配設さ
れ、その外周にはテンション部材11を介在させることな
く直接的に外被13が施される。２次コート７は超音波溶
着可能な樹脂（例．芳香族ポリエステル）により形成さ
れる。外被13はなくてもよい。いずれにしろ本発明では
テンション部材を不要としているために従来の如きテン
ション部材を露出させるための光ファイバの皮むき作業
は不要である。As shown in FIG. 4, the optical fiber used in the present invention is provided with a secondary coat 7 on the outer side of the optical fiber 9, and a jacket 13 is directly provided on the outer periphery thereof without interposing a tension member 11. Is given. The secondary coat 7 is formed of a resin that can be ultrasonically welded (eg, aromatic polyester). The jacket 13 may be omitted. In any case, since the present invention does not require a tension member, the conventional peeling work of the optical fiber for exposing the tension member is unnecessary.
第５図及び第６図は本発明の別の実施例を示すもので、
同図においては大径孔33aを構成するフェルール部分3
7′（及びフランジ32′）のみが超音波溶着可能な樹脂
で形成され、フェルール31の残部は従来と同様にセラミ
ック等で形成されている。5 and 6 show another embodiment of the present invention,
In the figure, the ferrule part 3 that constitutes the large diameter hole 33a
Only 7 '(and the flange 32') is made of a resin that can be ultrasonically welded, and the rest of the ferrule 31 is made of ceramic or the like as in the conventional case.
第5,6図の実施例を更に進めて大径孔33aを形成する周壁
部のみ部分的に超音波溶着可能な樹脂で形成することも
可能である。It is also possible to further advance the embodiment of FIGS. 5 and 6 and form only the peripheral wall portion forming the large diameter hole 33a with a resin that can be ultrasonically welded.
第３図は第5,6図に示すフェルールに第４図に示す光フ
ァイバを挿着した状態を示すもので、本発明によれば光
ファイバの２次コート７及び光ファイバ９を夫々フェル
ール31の大径孔33a及び小径孔33bに挿通した後、超音波
にて加熱溶着するだけで２次コートとフェルールの樹脂
部どうしが溶融し、２次コート７は短時間でフェルール
に固着される。尚、フェルール部分37′はスリット36が
あるために超音波溶着時光ファイバの２次コートと圧接
固着することができる。FIG. 3 shows a state in which the optical fiber shown in FIG. 4 is inserted into the ferrule shown in FIGS. 5 and 6, and according to the present invention, the secondary coat 7 of the optical fiber and the optical fiber 9 are respectively attached to the ferrule 31. After being inserted into the large-diameter hole 33a and the small-diameter hole 33b, the secondary coat and the resin portion of the ferrule are melted only by heating and welding with ultrasonic waves, and the secondary coat 7 is fixed to the ferrule in a short time. Since the ferrule part 37 'has the slit 36, the ferrule part 37' can be fixed by pressure contact with the secondary coat of the optical fiber during ultrasonic welding.
尚、必要に応じて光ファイバ９とフェルールの小径孔33
bとの接合は超音波振動法による半田付等により行うこ
とができる。If necessary, the optical fiber 9 and the small diameter hole 33 of the ferrule
The bonding with b can be performed by soldering by the ultrasonic vibration method.
以上に記載した如く本発明によれば、フェルールと光フ
ァイバ２次コートの少くとも接合部分を超音波溶着可能
な樹脂で形成することにより短時間で容易に両者を固定
することができる。また光ファイバ外被の皮むき作業も
接着剤の封入作業も不要であり作業性の改善は著しいも
のがある。As described above, according to the present invention, at least the joint portion of the ferrule and the optical fiber secondary coat can be easily fixed in a short time by forming the resin by ultrasonic welding. Further, the work of peeling the outer cover of the optical fiber and the work of encapsulating the adhesive are unnecessary, and the workability is remarkably improved.
第１図及び第２図は、本発明のフェルールを示す断面図
及び右側面図、第３図は、ファイバとフェルールを固定
した状態の光コネクタを示す断面図、第４図は本発明に
おいて用いられる光ファイバの横断面図、第５図及び第
６図は本発明の別の実施例を示す第1,2図と同様の図、
第７図は、従来の光コネクタを示す断面図、第８図は第
７図のVIII−VIII線断面図。 ５′……光ファイバコード、７……２次コート、 ９……光ファイバ、31……フェルール 33a……大径部、33b……小径部、 36……スリット。1 and 2 are a sectional view and a right side view showing a ferrule of the present invention, FIG. 3 is a sectional view showing an optical connector in which a fiber and a ferrule are fixed, and FIG. 4 is used in the present invention. FIG. 5 and FIG. 6 are cross-sectional views of an optical fiber to be used, which are similar to FIGS. 1 and 2 showing another embodiment of the present invention,
FIG. 7 is a sectional view showing a conventional optical connector, and FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 5 '... Optical fiber cord, 7 ... Secondary coat, 9 ... Optical fiber, 31 ... Ferrule 33a ... Large diameter part, 33b ... Small diameter part, 36 ... Slit.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 目崎 明年 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 (56)参考文献 特開 昭53−90952（ＪＰ，Ａ) 特開 昭59−36209（ＪＰ，Ａ) 実開 昭61−157908（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Meisei Maki 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (56) References JP-A-53-90952 (JP, A) JP-A-59-36209 (JP, A) Actually open Sho 61-157908 (JP, U)
Claims (1)
な樹脂で形成した２次コート（７）を被覆した光ファイ
バコード（５′）を結合すべきフェルール（31）を有す
る光コネクタにおいて、光ファイバを挿通すべきフェル
ールの中心孔を２次コート用の大径孔（33a）とファイ
バコア用の小径孔（33b）とから成る段付孔とすると共
に上記大径孔の少くとも内周面近傍を超音波溶着可能な
樹脂により形成し、上記大径孔を形成するフェルール部
分に超音波溶着時のフェルールの変形しろを吸収する孔
軸線方向に延びる複数個のスリット（36）を形成したこ
とを特徴とする光コネクタ用フェルール。1. An optical connector having a ferrule (31) to which an optical fiber cord (5 ') coated with a secondary coat (7) made of a resin capable of ultrasonic welding is connected to the outer periphery of an optical fiber (9). In addition, the center hole of the ferrule through which the optical fiber is inserted is a stepped hole composed of a large diameter hole (33a) for the secondary coating and a small diameter hole (33b) for the fiber core, and at least the large diameter hole is provided. The vicinity of the inner peripheral surface is formed of a resin that can be ultrasonically welded, and a plurality of slits (36) extending in the axial direction of the hole that absorbs the deformation margin of the ferrule during ultrasonic welding are formed in the ferrule part that forms the large diameter hole. A ferrule for an optical connector, which is characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61283058A JPH0750217B2 (en) | 1986-11-29 | 1986-11-29 | Optical connector ferrule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61283058A JPH0750217B2 (en) | 1986-11-29 | 1986-11-29 | Optical connector ferrule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63137202A JPS63137202A (en) | 1988-06-09 |
| JPH0750217B2 true JPH0750217B2 (en) | 1995-05-31 |
Family
ID=17660655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61283058A Expired - Lifetime JPH0750217B2 (en) | 1986-11-29 | 1986-11-29 | Optical connector ferrule |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750217B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19849026A1 (en) * | 1998-10-23 | 2000-04-27 | Bayerische Motoren Werke Ag | Method for fastening an optical fiber end in a plastic contact sleeve and correspondingly produced plastic contact |
| DE19919428C2 (en) * | 1999-04-28 | 2001-12-06 | Tyco Electronics Logistics Ag | Plastic ferrule for an optical fiber and method for attaching a ferrule to an optical fiber |
| DE19923246A1 (en) * | 1999-05-20 | 2000-12-07 | Tyco Electronics Logistics Ag | Ferrule for an optical fiber and method for attaching the ferrule to the optical fiber |
| JP2004045805A (en) | 2002-07-12 | 2004-02-12 | Yazaki Corp | Ferrule for connecting optical fiber and method for welding optical fiber and ferrule |
| JP5120094B2 (en) * | 2008-06-19 | 2013-01-16 | 住友電気工業株式会社 | Optical connector and manufacturing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2385107A1 (en) * | 1977-01-18 | 1978-10-20 | Souriau & Cie | IMPROVEMENTS TO THE METHODS FOR PREPARING, WITH A VIEW TO ITS CONNECTION, AN END OF AN OPTICAL CABLE WITH FIBER HARNESS AND CABLE THUS OBTAINED |
| JPS5936209A (en) * | 1982-08-03 | 1984-02-28 | Oputo:Kk | Optical connector plug |
| JPS61157908U (en) * | 1985-03-20 | 1986-09-30 |
-
1986
- 1986-11-29 JP JP61283058A patent/JPH0750217B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63137202A (en) | 1988-06-09 |
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