JPS63118108A - Optical connector ferrule - Google Patents
Optical connector ferruleInfo
- Publication number
- JPS63118108A JPS63118108A JP17264987A JP17264987A JPS63118108A JP S63118108 A JPS63118108 A JP S63118108A JP 17264987 A JP17264987 A JP 17264987A JP 17264987 A JP17264987 A JP 17264987A JP S63118108 A JPS63118108 A JP S63118108A
- Authority
- JP
- Japan
- Prior art keywords
- ferrule
- optical fiber
- tip
- insertion hole
- fiber core
- 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
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims abstract description 36
- 238000003780 insertion Methods 0.000 claims abstract description 14
- 230000037431 insertion Effects 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は光コネクタフェルールの改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in optical connector ferrules.
従来、光ファイバ心線相互を直接接続するには、第２図
に示すように軸心に光ファイバ挿通孔４と光ファイバ心
線種通孔５，６とを連通穿没した光コネクタフェルール
（以下フェルールと略記）２１を、光ファイバＤを所定
長さ露出させた接続すべき光ファイバ心線Ｃの端末部に
取付けたのち、上記フェルール２１の先端から突出した
余分の光ファイバＤを切断して、この切断部分を鏡面状
に仕上げ、この光ファイバＤの露出先端面を接続すべき
他方のフェルールを取付は光ファイバの露出先端面と相
互に当接させて接続していた。Conventionally, in order to directly connect optical fibers to each other, an optical connector ferrule (1) is used, in which the optical fiber insertion hole 4 and the optical fiber type through holes 5, 6 are bored in the axial center so as to communicate with each other, as shown in FIG. After attaching the ferrule (hereinafter abbreviated as ferrule) 21 to the end of the optical fiber core C to be connected, which exposes a predetermined length of the optical fiber D, the excess optical fiber D protruding from the tip of the ferrule 21 is cut off. Then, the cut portion was finished to a mirror finish, and the other ferrule to which the exposed end surface of the optical fiber D was to be connected was attached so as to be in contact with the exposed end surface of the optical fiber.
しかしながら、上記の光ファイバ心線相互の直線接続に
使用するフェルールは第２図に示すように、その先端が
基部側と同じ径からなり、先端面２３の面積が広く、こ
のため光ファイバ切断面の鏡面仕上げに際し、研磨に長
時間を要し、また先ネ；面全面に亘って一様に研磨する
のがむずかしく、その結果フェルール先端面同志の接触
性が低下し、光結合性に劣るなどの問題があった。However, as shown in FIG. 2, the tip of the ferrule used for linearly connecting the optical fibers has the same diameter as the base, and the area of the tip surface 23 is large, so that the cut surface of the optical fiber is When polishing to a mirror finish, it takes a long time to polish, and it is difficult to polish the entire tip surface uniformly, resulting in poor contact between the tip surfaces of the ferrule and poor optical coupling. There was a problem.
本発明は、かかる状況に鑑みなされたもので、その要旨
とするところは、軸心に光ファイバ挿通孔と光ファイバ
心線種通孔とを連通穿設したフェルールであって、この
フェルールの先端部分が先端に向けて同心円状に縮径さ
れて上記フェルールの先端面の面積が縮小されているこ
とを特徴とする光コネクタフェルールにある。The present invention has been made in view of such circumstances, and its gist is a ferrule in which an optical fiber insertion hole and an optical fiber core type through hole are formed in communication with each other in the axial center, and the tip of the ferrule is The optical connector ferrule is characterized in that the diameter of the portion is concentrically reduced toward the tip, thereby reducing the area of the tip surface of the ferrule.
フェルールの先端面が縮小されているので、光ファイバ
端面の鏡面仕上げが短時間でなされ、またフェルール先
端面全面が一様に研磨されるようになり、接続の際、フ
ェルール先端面同志の接触性が良好となる。Since the ferrule tip surface is reduced in size, the optical fiber end surface can be mirror-finished in a short time, and the entire ferrule tip surface can be polished uniformly, improving the contact between the ferrule tip surfaces during connection. becomes good.
以下に本発明の実施例を図面を参照して詳細に説明する
。Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は、本発明の一実施例を示すフェルールの使用状
態を示す縦断面図である。同図において１はフェルール
、２はハウジング、Ｄは光ファイバである。FIG. 1 is a longitudinal sectional view showing a state in which a ferrule according to an embodiment of the present invention is used. In the figure, 1 is a ferrule, 2 is a housing, and D is an optical fiber.
フェルールｌの先端部分は、先端に向けて同心円状に縮
径され、フェルール１の先端面３０面積が縮小されてお
り、このフェルールｌの軸心には、光ファイバ挿通孔４
と光ファイバ心線挿通孔５゜６とが連通穿設されており
、それぞれの挿通孔５゜６に光ファイバコードＡの被覆
が除去され露出された光ファイバＤとを光ファイバ心線
Ｃとがそれぞれ接着により固定されており、上記の光フ
ァイバＤの先端は、フェルール１の先端面３と面を合わ
せて軸方向に直角に鏡面状に仕上げられている。The diameter of the tip of the ferrule l is concentrically reduced toward the tip, and the area of the tip surface 30 of the ferrule 1 is reduced, and an optical fiber insertion hole 4 is formed at the axis of the ferrule l.
and the optical fiber core insertion holes 5.6 are bored to communicate with each other, and the optical fiber D, which has been exposed by removing the coating of the optical fiber cord A, is connected to the optical fiber core C through each insertion hole 5.6. are fixed by adhesive, respectively, and the tip of the optical fiber D is mirror-finished so as to be perpendicular to the axial direction so as to be flush with the tip surface 3 of the ferrule 1.
この光ファイバＤと光ファイバ心線Ｃとが接着により固
定されたフェルールｌは、ハウジング２のフェルール挿
通孔７に嵌挿されており、フェルールｌの環状突起８が
ハウジング２の係止孔９に係止され、スプリング１０が
上記環状突起８に当接してフェルールｌを軸心方向に付
勢している。The ferrule l, in which the optical fiber D and the optical fiber core C are fixed by adhesive, is inserted into the ferrule insertion hole 7 of the housing 2, and the annular protrusion 8 of the ferrule l is inserted into the locking hole 9 of the housing 2. The spring 10 contacts the annular projection 8 and urges the ferrule l in the axial direction.
１１は先端部外周面に螺子溝１２とこの螺子溝１２に連
続して鍔状突起１３を連設してなる中空のフェルール押
し部材で、このフェルール押し部＋４’ｌｌは前記ハウ
ジング２の螺子孔１４に螺装され、前記フェルール１を
スプリング１０を介して軸心方向に押圧している。１５
は上記フェルール押し部材１１の端末部上に被せられた
スリーブで、このスリーブ１５を加締工具を用いて加締
付けることにより、スリーブ１５の内周面フェルール押
し部材１１の外周面との間に光ファイバコードＡの繊維
状テンションメンバーＢを加締付は固着しうるようにな
っている。Reference numeral 11 denotes a hollow ferrule pushing member having a threaded groove 12 on the outer circumferential surface of the tip and a flanged protrusion 13 connected to the threaded groove 12. 14, and presses the ferrule 1 in the axial direction via a spring 10. 15
is a sleeve placed over the end of the ferrule pushing member 11, and by crimping the sleeve 15 using a crimping tool, light is created between the inner circumferential surface of the sleeve 15 and the outer circumferential surface of the ferrule pushing member 11. The fibrous tension member B of the fiber cord A can be fixed by caulking.
１６は光ファイバコードＡの端末部上から上記スリーブ
１５上に亘って被せるゴムキャップである。A rubber cap 16 is placed over the sleeve 15 from the end of the optical fiber cord A.
以上述べたように、本発明によれば、フェルール先端面
の面積が縮小されているので、光ファイバ端面の鏡面仕
上げが短時間でなされ、またフェルール先端面が一様に
研磨されるので、フェルール先端面の相互接触が良好と
なり光結合性が向上するなどの利点が得られる。As described above, according to the present invention, since the area of the ferrule tip surface is reduced, the optical fiber end surface can be mirror-finished in a short time, and the ferrule tip surface is uniformly polished, so the ferrule tip surface can be polished uniformly. Advantages such as good mutual contact between the tip surfaces and improved optical coupling are obtained.
第１図は本発明の光コネクタフェルールの一実施例を示
す縦断面図、第２図は、従来のフェルールの縦断面図で
ある。
１・・・フェルール、２・・・ハウジング、３・・・先
端面、４・・・光ファイバ挿通孔、５，６・・・光ファ
イバ心線種通孔、７・・・フェルール挿通孔、８・・・
環状突起、９・・・係止孔、１０・・・スプリング、１
１・・・フェルール押し部材、１２・・・螺子溝、１３
・・・鍔状突起、１４・・・螺子孔、１５・・・スリー
ブ゛、１６・・・ゴムキャンプ。
特許出願人 古河電気工業株式会社第１図
第２図FIG. 1 is a longitudinal sectional view showing an embodiment of the optical connector ferrule of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional ferrule. DESCRIPTION OF SYMBOLS 1... Ferrule, 2... Housing, 3... Tip surface, 4... Optical fiber insertion hole, 5, 6... Optical fiber core type through hole, 7... Ferrule insertion hole, 8...
Annular projection, 9... Locking hole, 10... Spring, 1
DESCRIPTION OF SYMBOLS 1... Ferrule pushing member, 12... Thread groove, 13
...flange-like process, 14...screw hole, 15...sleeve, 16...rubber camp. Patent applicant Furukawa Electric Co., Ltd. Figure 1 Figure 2
Claims (1)
通穿設したフェルールであって、該フェルールの先端部
分が先端に向けて同心円状に縮径されて上記フェルール
の先端面の面積が縮小されていることを特徴とする光コ
ネクタフェルール。A ferrule in which an optical fiber insertion hole and an optical fiber insertion hole are formed in the axial center so as to communicate with each other, and the tip portion of the ferrule is concentrically reduced in diameter toward the tip so that the area of the tip surface of the ferrule is reduced. An optical connector ferrule characterized by being reduced in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17264987A JPS63118108A (en) | 1987-07-10 | 1987-07-10 | Optical connector ferrule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17264987A JPS63118108A (en) | 1987-07-10 | 1987-07-10 | Optical connector ferrule |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP171987A Division JPS63118109A (en) | 1987-01-09 | 1987-01-09 | Optical connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63118108A true JPS63118108A (en) | 1988-05-23 |
Family
ID=15945802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17264987A Pending JPS63118108A (en) | 1987-07-10 | 1987-07-10 | Optical connector ferrule |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118108A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011087077A1 (en) * | 2010-01-14 | 2011-07-21 | 株式会社フジクラ | Optical connector and ferrule for optical connector |
| US9927583B2 (en) | 2010-01-14 | 2018-03-27 | Fujikura Ltd. | Optical connector and optical connector ferrule |
-
1987
- 1987-07-10 JP JP17264987A patent/JPS63118108A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011087077A1 (en) * | 2010-01-14 | 2011-07-21 | 株式会社フジクラ | Optical connector and ferrule for optical connector |
| US9927583B2 (en) | 2010-01-14 | 2018-03-27 | Fujikura Ltd. | Optical connector and optical connector ferrule |
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