JPS63137202A - Ferrule for optical connector - Google Patents
Ferrule for optical connectorInfo
- Publication number
- JPS63137202A JPS63137202A JP61283058A JP28305886A JPS63137202A JP S63137202 A JPS63137202 A JP S63137202A JP 61283058 A JP61283058 A JP 61283058A JP 28305886 A JP28305886 A JP 28305886A JP S63137202 A JPS63137202 A JP S63137202A
- Authority
- JP
- Japan
- Prior art keywords
- ferrule
- optical fiber
- resin
- hole
- welded
- 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
- 230000003287 optical effect Effects 0.000 title claims description 11
- 239000013307 optical fiber Substances 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000003466 welding Methods 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
本発明は、光コネクタにおいて１．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] [Summary] The present invention provides an optical connector that includes 1. In order to simplify the work of fixing the fiber to the ferrule, at least the joint parts of the fiber and the ferrule are both made of a resin that can be ultrasonically welded, and after the fiber is inserted into the ferrule, the fiber is welded and joined using ultrasonic waves. A slit is formed in the ferrule to act as a deformation margin during ultrasonic welding. This greatly simplifies the connection work and the preparation work therefor (adhesive application, fiber stripping work, etc.).
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 that connects a pair of optical fibers using a ferrule, and 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アイバ構造を
示す。7 and 8 show a conventional optical connector structure and an 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。In Figure 7.8, there is a stepped central hole 3 in the ferrule 1.
is formed, the secondary coat 7 of the optical fiber 5 is inserted into the large diameter portion 3a, and the optical fiber 9 is inserted into the small diameter portion 3b. The optical fiber 5 is connected to the optical fiber 9 as shown in FIG.
A secondary coat 7, a tension member 11 called Kevlar (trade name), and a protective jacket 13 are formed on the outside of the holder.
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。Note that a primary coat (not shown) is applied to the outer periphery 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内においては
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ｌ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 coupling between the ferrule 1 and the optical fiber is performed by an 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 it adheres the secondary coat 7, the tension member 11, and the outer sheath 13 in the pipe 19. The tension member 11 is exposed by peeling off the outer sheath 13. The tension member 11 is extended and fixed in the gap between the ferrule (1) and the pipe 19. The pipe 19 is pressed coaxially against the flange 2 of the ferrule I to provide a space for filling the adhesive 15.
フェルールは締結用ナツト部材４内に挿入され、適当な
アダプタ（図示せず）によりナツト部材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■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 held fixed therein by a suitable adapter (not shown). A similar ferrule 1' holding the other optical fiber to be joined is joined face-to-face to the ferrule ■,
Optical fibers are coaxially joined together.
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。Conventional optical connectors connect the ferrule to the ferrule by fixing the optical fiber's main secondary coat and tension member to the ferrule with adhesive, which not only makes pouring the adhesive troublesome, but also makes it especially difficult to bond the tension member to the ferrule. There was a problem in that the work of peeling off the outer cover to expose the parts was troublesome and the assembly work was time-consuming.
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。SUMMARY OF THE INVENTION An object of the present invention is to provide a structure for joining a ferrule and an optical fiber, which does not use an adhesive and eliminates the need for stripping the optical fiber as described above.
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, the present invention provides an optical connector having a ferrule to which an optical fiber whose outer periphery is coated with a secondary coat formed of ultrasonic weldable resin is connected. The center hole of the ferrule to be inserted is a stepped hole consisting of a large diameter hole for the secondary coating and a small diameter hole for the fiber core, and at least the vicinity of the inner peripheral surface of the large diameter hole is made of a resin that can be ultrasonically welded. formed by,
There is provided a ferrule for an optical connector, characterized in that a plurality of slits extending in the hole axis direction are formed in the ferrule portion forming the large diameter hole.
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。The optical fiber is fixed to the ferrule by simply inserting an optical fiber made of ultrasonic weldable resin into the center hole of the ferrule, which is also made of ultrasonically weldable resin, and heating and melting them using ultrasonic waves. Ru. The deformation of the ferrule during ultrasonic welding is effectively absorbed by the slit.
第１．２図は本発明に係るフェルールの一実施例を示す
。Figure 1.2 shows an embodiment of a ferrule according to the invention.
フェルール３１はその中心に大径孔３３ａと小径孔３３
ｂとから成る段付孔３３を有することは第７図の場合と
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、−ｉ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３３ａ
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
′−ドア （第４図）を超音波溶着する時の変形し
ろとして機能する。The ferrule 31 has a large diameter hole 33a and a small diameter hole 33 in its center.
The ferrule 31 is similar to the case shown in FIG. 7 in that it has a stepped hole 33 consisting of b, but in this embodiment, the ferrule 31 is made of a resin (for example, aromatic polyester) that can be ultrasonically welded. It is. Note that the ferrule for -i is made of ceramic or the like. And the large diameter portion 33a
A plurality of slits 36 (four in the figure) extending in the axial direction of the center hole 33 are formed in the ferrule portion 37 constituting the ferrule. The slit 36 is the secondary core of the optical fiber.
' - Functions as a deformation margin when ultrasonically welding the door (Fig. 4).
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。As shown in FIG. 4, the optical fiber used in the present invention has a secondary coat 7 disposed on the outside of the optical fiber 9, and a jacket 13 is directly applied to the outer periphery of the optical fiber 9 without intervening a tension member 11. administered. The secondary coat 7 is formed of a resin (eg, aromatic polyester) that can be ultrasonically welded.
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。The outer cover 13 may be omitted. In any case, since the present invention does not require a tension member, there is no need for the conventional stripping operation of the optical fiber to expose the tension member.
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
３７′ （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, only the ferrule portion 37' (and flange 32') constituting the large diameter hole 33a is made of 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 proceed further with the embodiment shown in FIG. 5.6, and only the peripheral wall portion forming the large-diameter hole 33a is partially formed of 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可能ファイバの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. After passing through the large-diameter hole 33a and the small-diameter hole 33b, the resin parts of the secondary coat and the ferrule are melted by simply heating and welding them using ultrasonic waves, and the secondary coat 7 is fixed to the ferrule in a short time. In addition, since the ferrule portion 37' has a slit 36, two of the ultrasonic weldable fibers are
The next coat can be bonded and bonded.
尚、必要に応じて光ファイバ９とフェルールの小径孔３
３ｂ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。In addition, the optical fiber 9 and the small diameter hole 3 of the ferrule may be inserted as necessary.
The bonding with 3b can be performed by soldering or the like using an 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
アイバ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。また光フア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, by forming at least the joint portion of the ferrule and the optical fiber secondary coat with a resin that can be ultrasonically welded, it is possible to easily fix the two in a short time. In addition, there is no need to peel the optical fiber jacket or encapsulate the adhesive, resulting in a significant improvement in workability.
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■−■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３
３ａ・・・大径部、 ３３ｂ・・・小径部、３
Ｇ・・・スリット。1 and 2 are a cross-sectional view and a right side view showing the ferrule of the present invention, FIG. 3 is a cross-sectional view showing the optical connector with the fiber and ferrule fixed, and FIG. 4 is a cross-sectional view showing the optical connector used in the present invention. 5 and 6 are views similar to FIGS. 1 and 2 showing another embodiment of the present invention, and FIG. 7 is a sectional view showing a conventional optical connector. Figure 8 is a sectional view taken along the line ■-■ in Figure 7. 5'... Optical fiber cord, 7... Secondary coat, 9
...Optical fiber, 31...Ferrule 3
3a...Large diameter part, 33b...Small diameter part, 3
G...Slit.
Claims (1)
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。An optical fiber cord (5) coated with a secondary coat (7) formed of an ultrasonic weldable resin on the outer periphery of the optical fiber (9).
'), the center hole of the ferrule through which the optical fiber is inserted is separated from the large diameter hole (33a) for the secondary coating and the small diameter hole (33b) for the fiber core. At least the vicinity of the inner circumferential surface of the large diameter hole is formed of a resin that can be welded by ultrasonic waves, and a plurality of slits (36 ) A ferrule for an optical connector.
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 true JPS63137202A (en) | 1988-06-09 |
| JPH0750217B2 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0996010A2 (en) * | 1998-10-23 | 2000-04-26 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method of securing the end of an optical fibre in a plastic connector ferrule and the plastic connector so manufactured |
| WO2000067056A1 (en) * | 1999-04-28 | 2000-11-09 | Tyco Electronics Logistics Ag | Method of fixing a ferrule to an optical waveguide |
| EP1058139A1 (en) * | 1999-05-20 | 2000-12-06 | Tyco Electronics Logistics AG | Ferrule for an optical fibre and method of fixing the ferrule to the optical fibre |
| DE10331095A1 (en) * | 2002-07-12 | 2004-01-29 | Yazaki Corp. | Ferrule for a connector of an optical fiber and method for welding a ferrule and an optical fiber |
| JP2010002610A (en) * | 2008-06-19 | 2010-01-07 | Sumitomo Electric Ind Ltd | Optical connector and method of manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5390952A (en) * | 1977-01-18 | 1978-08-10 | Souriau & Cie | Method of fixing ferrule at optical cable edge and its optical cable |
| 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
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5390952A (en) * | 1977-01-18 | 1978-08-10 | Souriau & Cie | Method of fixing ferrule at optical cable edge and its optical cable |
| JPS5936209A (en) * | 1982-08-03 | 1984-02-28 | Oputo:Kk | Optical connector plug |
| JPS61157908U (en) * | 1985-03-20 | 1986-09-30 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0996010A2 (en) * | 1998-10-23 | 2000-04-26 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method of securing the end of an optical fibre in a plastic connector ferrule and the plastic connector so manufactured |
| EP0996010A3 (en) * | 1998-10-23 | 2001-10-24 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method of securing the end of an optical fibre in a plastic connector ferrule and the plastic connector so manufactured |
| US6599026B1 (en) | 1998-10-23 | 2003-07-29 | Bayerische Motoren Werke | Optical fiber termination featuring ultrasonic retention of a plastic optical fiber end |
| WO2000067056A1 (en) * | 1999-04-28 | 2000-11-09 | Tyco Electronics Logistics Ag | Method of fixing a ferrule to an optical waveguide |
| US6960027B1 (en) | 1999-04-28 | 2005-11-01 | Tyco Electronics Logistics Ag | Method of fixing a ferrule to an optical waveguide |
| EP1058139A1 (en) * | 1999-05-20 | 2000-12-06 | Tyco Electronics Logistics AG | Ferrule for an optical fibre and method of fixing the ferrule to the optical fibre |
| US6854899B1 (en) | 1999-05-20 | 2005-02-15 | Tyco Electronics Amp Gmbh | Ferrule for an optical fiber and process for fastening the ferrule on the optical fiber |
| DE10331095A1 (en) * | 2002-07-12 | 2004-01-29 | Yazaki Corp. | Ferrule for a connector of an optical fiber and method for welding a ferrule and an optical fiber |
| US6817779B2 (en) | 2002-07-12 | 2004-11-16 | Yazaki Corporation | Ferrule for connector of optical fiber and method of welding ferrule and optical fiber |
| JP2010002610A (en) * | 2008-06-19 | 2010-01-07 | Sumitomo Electric Ind Ltd | Optical connector and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0750217B2 (en) | 1995-05-31 |
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