JPH0352841B2 - - Google Patents
Info
- Publication number
- JPH0352841B2 JPH0352841B2 JP5232684A JP5232684A JPH0352841B2 JP H0352841 B2 JPH0352841 B2 JP H0352841B2 JP 5232684 A JP5232684 A JP 5232684A JP 5232684 A JP5232684 A JP 5232684A JP H0352841 B2 JPH0352841 B2 JP H0352841B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- fitting
- ferrule
- flange
- optical
- 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
- 230000003287 optical effect Effects 0.000 claims description 48
- 230000035515 penetration Effects 0.000 claims description 43
- 238000003780 insertion Methods 0.000 claims description 37
- 230000037431 insertion Effects 0.000 claims description 37
- 238000005192 partition Methods 0.000 claims description 32
- 230000000149 penetrating effect Effects 0.000 claims description 24
- 239000013307 optical fiber Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
- G02B6/4428—Penetrator systems in pressure-resistant devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば深海用の潜水機の如き壁の内
外で圧力差が大きい箇所で光信号の送受を行う際
に用いて好適な耐圧型光ケーブル隔壁貫通部に関
するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is a pressure-resistant type device suitable for transmitting and receiving optical signals in places where there is a large pressure difference between the inside and outside of a wall, such as in a deep-sea submersible. This relates to an optical cable partition wall penetration part.
（従来技術）
従来のこの種の耐圧型光ケーブル隔壁貫通部
は、隔壁に貫通孔を設け、この貫通孔にフランジ
付のコネクタハウジングを、そのフランジが隔壁
の外面に当るようにして嵌合し、隔壁を貫通して
その内面側に突出したコネクタハウジングにナツ
トを螺合してこれを締めることにより接合面のＯ
リングを圧縮して耐圧水密性を得るようにしてい
た（米国特許第3825320号）。(Prior art) This type of conventional pressure-resistant optical cable bulkhead penetration part has a through hole in the bulkhead, and a connector housing with a flange is fitted into the through hole so that the flange touches the outer surface of the bulkhead. By screwing a nut into the connector housing that penetrates the partition wall and protruding to the inner side of the connector housing, and tightening the nut, the O of the joint surface is reduced.
The ring was compressed to make it pressure-resistant and watertight (U.S. Pat. No. 3,825,320).
しかしながら、このような構造では組立を行う
のに隔壁の内外に作業者をそれぞれ配置して連絡
をとりながら作業を行わなければならず、組立の
作業性が非常に悪い欠点があつた。また、この光
ケーブル隔壁貫通部では、構造体部分と、加工上
問題になる光伝導体貫通部分とが一体構造のため
製作時に不良品率が高くなる欠点があつた。 However, such a structure has the disadvantage that workers must be placed inside and outside the partition wall and communicate with each other to carry out the assembly, resulting in very poor assembly work efficiency. In addition, this optical cable partition wall penetration part has a drawback that the rate of defective products increases during manufacturing because the structure part and the photoconductor penetration part, which poses problems in processing, are integrally constructed.
（発明の目的）
本発明の目的は、隔壁の片側で組立作業を行う
ことができ、且つ不良品率を低下させることがで
きる耐圧型光ケーブル隔壁貫通部を提供するにあ
る。(Object of the Invention) An object of the present invention is to provide a pressure-resistant optical cable partition wall penetrating portion that allows assembly work to be performed on one side of the partition wall and reduces the rate of defective products.
（発明の構成）
本発明に係る耐圧型光ケーブル隔壁貫通部は、
隔壁に壁貫通孔が設けられ、前記壁貫通孔にフラ
ンジ付の貫通金具がそのフランジを前記隔壁の高
圧側壁面に当接させて嵌合され、前記貫通金具に
は前記フランジの高圧側端面より同軸状に突出さ
せて筒状突出部が設けられ、前記フランジと前記
隔壁との間はＯリングでシールされ、前記フラン
ジはボルト締めで前記隔壁に固定され、前記貫通
金具の中心には段部付貫通孔が設けられ、前記段
部付貫通孔は高圧側に位置する大径孔部と低圧側
に位置する小径孔部とが相互に連通され両者の境
界に段部を有する構造になつており、前記大径孔
部内には一端を前記段部に係止させて光貫通素子
が収容され、前記光貫通素子は仕切ブロツクとそ
の中心にハーメチツクシールされて貫通支持され
た光伝導体から成り、前記仕切ブロツクと前記貫
通金具との間はＯリングでシールされ、前記光貫
通素子は前記大径孔部に螺合された固定リングに
て固定され、前記貫通金具の前記大径孔部の入口
側にはフランジ付の挿入金具の先端部がフランジ
を該貫通金具の前記筒状突出部における高圧側端
面に当接させて挿入され、前記挿入金具と前記貫
通金具との間はＯリングでシールされ、前記挿入
金具は前記フランジを押えるように前記筒状突出
部に螺合された袋ナツトで前記貫通金具に固定さ
れ、前記挿入金具の中心にはその低圧側端面に開
口させた大径のフエルールセツト孔部とそれより
小径で高圧側端面に開口させたケーブル挿入孔部
とが相互に連通し且つ両者の境界に段部を有して
設けられ、前記フエルールセツト孔部内には鍔部
付のフエルールの基部が挿入され、前記フエルー
ルセツト孔部と前記ケーブル挿入孔部との境界の
前記段部と前記フエルールの前記鍔部との間には
前記フエルールを前記光貫通素子側に付勢するス
プリングが介在され、前記フエルールセツト孔部
の入口側内面には前記フエルールの前記鍔部が当
接することにより該フエルールの抜止めをする抜
止めリングが螺合され、前記ケーブル挿入孔部内
には光ケーブルの先端部が挿入され、前記光ケー
ブルの先端から導出された光フアイバ心線は前記
フエルールの中心孔に貫通支持され、前記フエル
ールの先端と前記光貫通素子の前記光伝導体の埋
込端面とは凹凸の光軸合せ部で接合され、前記挿
入金具と前記光ケーブルとに跨つてモールド部が
設けられていることを特徴とするものである。(Structure of the Invention) The pressure-resistant optical cable bulkhead penetration part according to the present invention includes:
A wall through hole is provided in the partition wall, and a through fitting with a flange is fitted into the wall through hole with the flange in contact with the high pressure side wall surface of the partition wall, and the through fitting has a hole from the high pressure side end surface of the flange. A cylindrical protrusion is provided to protrude coaxially, the space between the flange and the partition wall is sealed with an O-ring, the flange is fixed to the partition wall with bolts, and a stepped portion is provided at the center of the through fitting. A through hole with a step is provided, and the stepped through hole has a structure in which a large diameter hole located on the high pressure side and a small diameter hole located on the low pressure side communicate with each other and have a step at the boundary between the two. A light penetration element is accommodated in the large diameter hole with one end locked to the step part, and the light penetration element is hermetically sealed to the center of the partition block and a photoconductor supported through the partition block. The space between the partition block and the penetrating fitting is sealed with an O-ring, the optical penetrating element is fixed with a fixing ring screwed into the large diameter hole, and the large diameter hole of the penetrating fitting is fixed with a fixing ring screwed into the large diameter hole. The distal end of a flanged insertion fitting is inserted into the inlet side of the section with the flange in contact with the high-pressure side end surface of the cylindrical protrusion of the through-fitting, and the space between the insertion fitting and the through-fitting is O. The insertion fitting is sealed with a ring, and the insertion fitting is fixed to the penetrating fitting with a cap nut screwed onto the cylindrical protrusion so as to press the flange, and the insertion fitting has an opening at its center on its low-pressure side end surface. A large-diameter ferrule set hole and a smaller-diameter cable insertion hole opened on the high-voltage side end face are provided so as to communicate with each other and have a stepped portion at the boundary between the two. The base of the ferrule with a flange is inserted into the ferrule, and the ferrule is inserted between the step at the boundary between the ferrule set hole and the cable insertion hole and the flange of the ferrule. A spring is interposed to bias the ferrule toward the element side, and a retaining ring is screwed onto the inner surface of the inlet side of the ferrule set hole to prevent the ferrule from coming off when the flange of the ferrule comes into contact with the ferrule. The tip of an optical cable is inserted into the cable insertion hole, and the optical fiber core led out from the tip of the optical cable is supported through the center hole of the ferrule, and the tip of the ferrule and the optical conduction of the optical penetration element are connected to each other. The device is characterized in that it is joined to the embedded end surface of the body at an uneven optical axis alignment portion, and a molded portion is provided spanning the insertion fitting and the optical cable.
このような耐圧型光ケーブル隔壁貫通部は、貫
通金具に総ての部品が組付けられるようになつて
いて、この貫通金具を壁貫通孔に挿入し、そのフ
ランジを隔壁の高圧側壁面に当接してボルト締め
で固定するだけでよいので、隔壁の片側で組立作
業を行うことができ、従来のこの種のものに比べ
て作業人員を減すことができ、且つ作業性を大幅
に改善することができる。また、この光ケーブル
隔壁貫通部では、加工上問題になる光貫通素子を
貫通金具とは別体にしているので、光貫通素子を
良い作業条件のもとで製作でき、不良品率を低下
させることができる。更に、この光ケーブル隔壁
貫通部では、隔壁と貫通金具との間、光貫通素子
と貫通金具との間、及び貫通金具と挿入金具との
間をそれぞれＯリングでシールすると共に、挿入
金具と光ケーブルとの間はモールド部でシールし
ているので、気密・液密性を十分に確保すること
ができる。特に、モールド部や挿入金具と貫通金
具との間のシール以外に、光貫通素子のところで
もシールを行つているので、フエールセーフ構造
となり、耐圧性上非常に好適である。かつまた、
挿入金具内のフエルールセツト孔部内におけるフ
エルールは、スプリングにて該フエルールセツト
孔部の外に突出する方向に付勢されているが、該
フエルールセツト孔部の入口側内面に螺合されて
いる抜止めリングにフエルールの鍔部が当接する
ことにより抜け止めされているので、組立て時に
フエルールが挿入金具から脱出することがなく、
組立てが能率よく行える。 In such a pressure-resistant optical cable bulkhead penetration section, all parts are assembled to the penetration fitting, and the penetration fitting is inserted into the wall through-hole and its flange is brought into contact with the high-voltage side wall surface of the bulkhead. Since it is only necessary to fix the bulkhead with bolts, assembly work can be done on one side of the bulkhead, reducing the number of workers compared to conventional products of this type, and greatly improving work efficiency. I can do it. In addition, in this optical cable bulkhead penetration part, the optical penetration element, which is a problem in processing, is separated from the penetration fitting, so the optical penetration element can be manufactured under good working conditions, reducing the rate of defective products. I can do it. Furthermore, in this optical cable bulkhead penetration part, O-rings are used to seal between the partition wall and the penetration fitting, between the optical penetration element and the penetration fitting, and between the penetration fitting and the insertion fitting, and the insertion fitting and the optical cable are sealed. Since the space between the parts is sealed by the mold part, sufficient airtightness and liquidtightness can be ensured. In particular, in addition to the sealing between the mold part and the insertion fitting and the penetrating fitting, sealing is also performed at the optical penetrating element, resulting in a fail-safe structure, which is very suitable in terms of pressure resistance. And also,
The ferrule in the ferrule set hole in the insertion fitting is biased by a spring in the direction of protruding outside the ferrule set hole, but the ferrule is not screwed into the inner surface of the ferrule set hole on the entrance side. The flange of the ferrule comes into contact with the retaining ring, which prevents the ferrule from coming off, so the ferrule will not come off from the insertion fitting during assembly.
Assembly can be done efficiently.
（実施例）
以下本発明の実施例を図面を参照して詳細に説
明する。図示のように本実施例の耐圧型光ケーブ
ル隔壁貫通部は、潜水機等の殻からなる隔壁１に
あけられた壁貫通孔２を有する。壁貫通孔２に
は、フランジ３付の貫通金具４がそのフランジ３
を隔壁１の高圧側壁面に当接させて嵌合されてい
る。該貫通金具４には、そのフランジ３の高圧側
端面より同軸状に突出させて筒状突出部４Ａが設
けられている。フランジ３と隔壁１との間及び貫
通金具４と隔壁１との間にはＯリング５，６がそ
れぞれ介在されている。フランジ３はボルト７で
隔壁１に固定されている。貫通金具４の中心には
段部付貫通孔８があけられている。段部付貫通孔
８は、高圧側に位置する大径孔部８Ａと、低圧側
に位置する小径孔部８Ｂと、両者の境界に存在す
る段部８Ｃとから成つている。貫通金具４の低圧
側に面する端面には小径孔部８Ｂに合致させてレ
セプタクル９がネジ１０止めで固定されている。(Example) Examples of the present invention will be described in detail below with reference to the drawings. As shown in the figure, the pressure-resistant optical cable bulkhead penetrating portion of this embodiment has a wall through-hole 2 formed in a bulkhead 1 made of a shell of a submersible or the like. In the wall through hole 2, a through fitting 4 with a flange 3 is attached to the flange 3.
is fitted in contact with the high-pressure side wall surface of the partition wall 1. The penetrating fitting 4 is provided with a cylindrical protrusion 4A coaxially protruding from the high-pressure side end surface of the flange 3. O-rings 5 and 6 are interposed between the flange 3 and the partition wall 1 and between the penetrating fitting 4 and the partition wall 1, respectively. The flange 3 is fixed to the partition wall 1 with bolts 7. A stepped through hole 8 is bored in the center of the through fitting 4. The stepped through hole 8 includes a large diameter hole 8A located on the high pressure side, a small diameter hole 8B located on the low pressure side, and a step 8C existing at the boundary between the two. A receptacle 9 is fixed to the end surface of the through fitting 4 facing the low pressure side with a screw 10 so as to match the small diameter hole 8B.
大径孔部８Ａ内には一端を段部８Ｃに係止させ
て光貫通素子１１が収納されている。光貫通素子
１１は、円柱状をした仕切ブロツク１２を備え、
仕切ブロツク１２の中心の孔には光フアイバロツ
ドの如き光伝導体１３が貫通して挿入され、その
周囲がガラスや半田等のハーメチツクシール部材
１４により気密・液密にシールされた構造になつ
ている。仕切ブロツク１２の一方の端面と段部付
貫通孔８の段部８Ｃとの間にはＯリング１５が介
在されてシールがなされている。大径孔部８Ａ内
面には固定リング１６が螺合されて仕切ブロツク
１２の他方の端面が固定されている。 A light penetrating element 11 is housed in the large diameter hole 8A with one end thereof being locked to the step 8C. The light penetration element 11 includes a columnar partition block 12,
A photoconductor 13 such as an optical fiber rod is inserted through the hole in the center of the partition block 12, and its surroundings are hermetically and liquid-tightly sealed by a hermetic seal member 14 such as glass or solder. ing. An O-ring 15 is interposed between one end surface of the partition block 12 and the stepped portion 8C of the stepped through hole 8 to provide a seal. A fixing ring 16 is screwed into the inner surface of the large diameter hole 8A to fix the other end surface of the partition block 12.
貫通金具４の大径孔部８Ａの入口側には、フラ
ンジ１７を有する挿入金具１８の先端部がそのフ
ランジ１７を該貫通金具４の筒状突出部４Ａにお
ける高圧側端面に当接させて挿入されている。こ
の挿入金具１８と貫通金具４との間は、フランジ
１７と筒状突出部４Ａの端面との間及び、挿入金
具１８の外周と貫通金具４との間に介在されたＯ
リング１９，２０によりシールされている。挿入
金具１８は、フランジ１７を押えるように筒状突
出部４Ａに螺合された袋ナツト２１で貫通金具４
に固定されている。袋ナツト２１は、ストツパ−
２２で挿入金具１８に抜け止めされている。挿入
金具１８の中心には、その低圧側端面に開口させ
た大径のフエルールセツト孔部２３とそれより小
径で高圧側端面に開口させたケーブル挿入孔部２
４とが相互に連通して設けられ両孔部２３，２４
の境界には段部２５が形成されている。 The tip of an insertion fitting 18 having a flange 17 is inserted into the entrance side of the large-diameter hole 8A of the penetration fitting 4 with the flange 17 in contact with the high-pressure side end surface of the cylindrical protrusion 4A of the penetration fitting 4. has been done. Between the insertion fitting 18 and the penetration fitting 4, an O
It is sealed by rings 19 and 20. The insertion fitting 18 is inserted into the penetrating fitting 4 with a cap nut 21 screwed onto the cylindrical protrusion 4A so as to press the flange 17.
is fixed. The bag nut 21 is a stopper.
It is secured to the insertion fitting 18 at 22. At the center of the insertion fitting 18, there is a large-diameter ferrule set hole 23 that opens on the low-voltage side end surface, and a cable insertion hole 2 that has a smaller diameter and opens on the high-voltage side end surface.
4 are provided in communication with each other, and both hole portions 23, 24
A stepped portion 25 is formed at the boundary.
フエルールセツト孔部２３内には、鍔部２６Ａ
付のフエルール２６の基部が挿入されている。段
部２５と鍔部２６Ａとの間には、フエルール２６
を光貫通素子１１側に付勢するスプリング２７が
介在されている。フエルールセツト孔部２３の入
口側内面には、フエルール２６の鍔部２６Ａが当
接することにより該フエルール２６を抜止めする
抜止めリング２８が螺合されている。フエルール
２６の先端は固定リング１６の孔を通り抜けて光
貫通素子１１の光伝導体１３の埋込端面に設けら
れた凹部に嵌合され、光軸合せがなされている。
これら凹凸の嵌め合せにより光軸合せ部２９が形
成されている。 Inside the ferrule set hole 23, there is a flange 26A.
The base of the attached ferrule 26 is inserted. A ferrule 26 is provided between the stepped portion 25 and the collar portion 26A.
A spring 27 is interposed to urge the light penetrating element 11 side. A retaining ring 28 is screwed onto the inner surface of the entrance side of the ferrule set hole 23 to prevent the ferrule 26 from coming off by abutting against the collar 26A of the ferrule 26. The tip of the ferrule 26 passes through the hole in the fixing ring 16 and is fitted into a recess provided in the embedded end surface of the photoconductor 13 of the light penetrating element 11, thereby aligning the optical axis.
The optical axis alignment portion 29 is formed by fitting these unevenness.
ケーブル挿入孔部２４内には光ケーブル３０の
先端部が挿入されている。光ケーブル３０の先端
から導出された光フアイバ心線３１はフエルール
２６の中心孔に貫通されて接着剤等で固定されて
いる。光フアイバ心線３１の先端とフエルール２
６の先端とは一致されていて、光フアイバ心線３
１の先端が光伝導体１３の端面に当接されてい
る。 The tip of the optical cable 30 is inserted into the cable insertion hole 24 . The optical fiber core wire 31 led out from the tip of the optical cable 30 is passed through the center hole of the ferrule 26 and fixed with an adhesive or the like. The tip of the optical fiber core 31 and the ferrule 2
The tip of optical fiber 3 is aligned with the tip of optical fiber 3.
The tip of the photoconductor 1 is in contact with the end surface of the photoconductor 13.
挿入金具１８と光ケーブル３０とに跨つてウレ
タン樹脂等でモールド部３２が設けられ、気密・
液密の封止がなされている。 A molded portion 32 made of urethane resin or the like is provided across the insertion fitting 18 and the optical cable 30 to ensure airtightness.
It has a liquid-tight seal.
このような耐圧型光ケーブル隔壁貫通部は、高
圧側より貫通金具４を壁貫通孔２に嵌め、フラン
ジ３をボルト７で隔壁１に固定するなどして、隔
壁の片側の作業だけで組立を行うことができる。
なお、光貫通素子１１の低圧側端面には、小径孔
部８Ｂを心合せ孔として光プラグの先端を嵌合し
て突き合せ接続する。 Such a pressure-resistant optical cable bulkhead penetration part can be assembled by fitting the penetration fitting 4 into the wall through-hole 2 from the high-voltage side and fixing the flange 3 to the bulkhead 1 with bolts 7, by working only on one side of the bulkhead. be able to.
Note that the tip of the optical plug is fitted into the low-voltage side end face of the optical penetration element 11 using the small diameter hole portion 8B as an alignment hole, and is butt-connected.
（発明の効果）
以上説明したように本発明に係る耐圧型光ケー
ブル隔壁貫通部によれば、貫通金具に総ての部品
が組付けられるようになつていて、この貫通金具
を壁貫通孔に挿入し、そのフランジを隔壁の高圧
側端面に当接してボルト締めで固定するだけでよ
いので、隔壁の片側で組立作業を行うことがで
き、従来のこの種のものに比べて作業人員を減す
ことができ、且つ作業性を大幅に改善することが
できる。また、この光ケーブル隔壁貫通部では、
加工上問題になる光貫通素子を貫通金具とは別体
にしているので、光貫通素子を良い作業条件のも
とで製作でき、不良品率を低下させることができ
る。更に、この光ケーブル隔壁貫通部では、隔壁
と貫通金具との間、光貫通素子と貫通金具との
間、及び貫通金具と挿入金具との間をそれぞれＯ
リングでシールすると共に、挿入金具と光ケーブ
ルとの間はモールド部でシールしているので、気
密・液密性を十分に確保することができる。特
に、モールド部や挿入金具と貫通金具との間のシ
ール以外に、光貫通素子のところでもシールを行
つているので、フエールセーフ構造となり、耐圧
性上非常に好適である。かつまた、挿入金具内の
フエルールセツト孔部内におけるフエルールは、
スプリングにて該フエルールセツト孔部の外に突
出する方向に付勢されているが、該フエルールセ
ツト孔部の入口側内面に螺合されている抜止めリ
ングにフエルールの鍔部が当接することにより抜
け止めされているので、組立て時にフエルールが
挿入金具から脱出することがなく、組立てを能率
よく行うことができる。(Effects of the Invention) As explained above, according to the pressure-resistant optical cable bulkhead penetration part according to the present invention, all the parts are assembled to the penetration fitting, and the penetration fitting is inserted into the wall penetration hole. However, since the flange only needs to be brought into contact with the high-pressure side end face of the bulkhead and fixed with bolts, assembly work can be performed on one side of the bulkhead, reducing the number of workers compared to conventional products of this type. and workability can be greatly improved. In addition, in this optical cable bulkhead penetration part,
Since the optical penetrating element, which is a problem in processing, is made separate from the penetrating fitting, the optical penetrating element can be manufactured under good working conditions, and the rate of defective products can be reduced. Furthermore, in this optical cable partition penetration part, O is provided between the partition wall and the penetration fitting, between the optical penetration element and the penetration fitting, and between the penetration fitting and the insertion fitting.
In addition to sealing with the ring, the space between the insertion fitting and the optical cable is also sealed with a molded part, so that sufficient airtightness and liquidtightness can be ensured. In particular, in addition to the sealing between the mold part and the insertion fitting and the penetrating fitting, sealing is also performed at the optical penetrating element, resulting in a fail-safe structure, which is very suitable in terms of pressure resistance. Moreover, the ferrule in the ferrule set hole in the insertion fitting is
Although the ferrule is urged by a spring in the direction of protruding outside the ferrule set hole, the flange of the ferrule comes into contact with a retaining ring screwed onto the inner surface of the ferrule set hole on the entrance side. Since the ferrule is prevented from coming off by this, the ferrule does not come off from the insertion fitting during assembly, and the assembly can be carried out efficiently.
図面は本発明に係る耐圧型光ケーブル隔壁貫通
部の一実施例の縦断面図である。
１…隔壁、２…壁貫通孔、３…フランジ、４…
貫通金具、４Ａ…筒状突出部、５，６…Ｏリン
グ、７…ボルト、８…段部付貫通孔、８Ａ…大径
孔部、８Ｂ…小径孔部、８Ｃ…段部、９…レセプ
タクル、１０…ネジ、１１…光貫通素子、１２…
仕切ブロツク、１３…光伝導体、１４…ハーメチ
ツクシール部材、１５…Ｏリング、１６…固定リ
ング、１７…フランジ、１８…挿入金具、１９，
２０…Ｏリング、２１…袋ナツト、２３…フエル
ールセツト孔部、２４…ケーブル挿入孔部、２５
…段部、２６Ａ…鍔部、２６…フエルール、２７
…スプリング、２８…抜止めリング、２９…光軸
合せ部、３０…光ケーブル、３１…光フアイバ心
線、３２…モールド部。
The drawing is a longitudinal cross-sectional view of an embodiment of a pressure-resistant optical cable bulkhead penetration part according to the present invention. 1... Partition wall, 2... Wall through hole, 3... Flange, 4...
Penetration fitting, 4A... Cylindrical protrusion, 5, 6... O-ring, 7... Bolt, 8... Through hole with step, 8A... Large diameter hole, 8B... Small diameter hole, 8C... Step, 9... Receptacle , 10... screw, 11... light penetration element, 12...
Partition block, 13... Photoconductor, 14... Hermetic seal member, 15... O ring, 16... Fixing ring, 17... Flange, 18... Insertion fitting, 19,
20... O-ring, 21... Cap nut, 23... Ferrule set hole, 24... Cable insertion hole, 25
...Stepped portion, 26A...Brim portion, 26...Ferrule, 27
. . . Spring, 28. Retaining ring, 29. Optical axis alignment portion, 30. Optical cable, 31.
Claims (1)
孔２にフランジ３付の貫通金具４がそのフランジ
３を前記隔壁１の高圧側壁面に当接させて嵌合さ
れ、前記貫通金具４には前記フランジ３の高圧側
端面より同軸状に突出させて筒状突出部４Ａが設
けられ、前記フランジ３と前記隔壁１との間はＯ
リング５でシールされ、前記フランジ３はボルト
７締めで前記隔壁１に固定され、前記貫通金具４
の中心には段部８Ｃ付貫通孔８が設けられ、前記
段部８Ｃ付貫通孔８は高圧側に位置する大径孔部
８Ａと低圧側に位置する小径孔部８Ｂとが相互に
連通され両者の境界に前記段部８Ｃを有する構造
になつており、前記大径孔部８Ａ内には一端を前
記段部８Ｃに係止させて光貫通素子１１が収容さ
れ、前記光貫通素子１１は仕切ブロツク１２とそ
の中心にハーメチツクシールされて貫通支持され
た光伝導体１３から成り、前記仕切ブロツク１２
と前記貫通金具４との間はＯリング１５でシール
され、前記光貫通素子１１は前記大径孔部８Ａに
螺合された固定リング１６にて固定され、前記貫
通金具４の前記大径孔部８Ａの入口側にはフラン
ジ１７付の挿入金具１８の先端部がそのフランジ
１７を該貫通金具４の前記筒状突出部４Ａにおけ
る高圧側端面に当接させて挿入され、前記挿入金
具１８と前記貫通金具４との間はＯリング１９，
２０でシールされ、前記挿入金具１８は前記フラ
ンジ１７を押えるように前記筒状突出部４Ａに螺
合された袋ナツト２１で前記貫通金具４に固定さ
れ、前記挿入金具１８の中心にはその低圧側端面
に開口させた大径のフエルールセツト孔部２３と
それより小径で高圧側端面に開口させたケーブル
挿入孔部２４とが相互に連通し且つ両者の境界に
段部２５を有して設けられ、前記フエルールセツ
ト孔部２３内には鍔部２６Ａ付のフエルール２６
の基部が挿入され、前記フエルールセツト孔部２
３と前記ケーブル挿入孔部２４との境界の前記段
部２５と前記フエルール２６の前記鍔部２６Ａと
の間には前記フエルール２６を前記光貫通素子１
１側に付勢するスプリング２７が介在され、前記
フエルールセツト孔部２３の入口側内面には前記
フエルール２６の前記鍔部２６Ａが当接すること
により該フエルール２６の抜止めをする抜止めリ
ング２８が螺合され、前記ケーブル挿入孔部２４
内には光ケーブル３０の先端部が挿入され、前記
光ケーブル３０の先端から導出された光フアイバ
心線３１は前記フエルール２６の中心孔に貫通支
持され、前記フエルール２６の先端と前記光貫通
素子１１の前記光伝導体１３の埋込端面とは凹凸
の光軸合せ部２９で接合され、前記挿入金具１８
と前記光ケーブル３０とに跨つてモールド部３２
が設けられていることを特徴とする耐圧型光ケー
ブル隔壁貫通部。1 A wall through hole 2 is provided in the partition wall 1, and a through fitting 4 with a flange 3 is fitted into the wall through hole 2 with the flange 3 in contact with the high pressure side wall surface of the partition wall 1, and the through fitting 4 is provided with a cylindrical protrusion 4A coaxially protruding from the high-pressure side end face of the flange 3, and between the flange 3 and the partition wall 1 is an O.
The flange 3 is fixed to the partition wall 1 by tightening bolts 7, and the through fitting 4 is sealed with a ring 5.
A through hole 8 with a stepped portion 8C is provided in the center of the through hole 8, and in the through hole 8 with the stepped portion 8C, a large diameter hole portion 8A located on the high pressure side and a small diameter hole portion 8B located on the low pressure side communicate with each other. The structure has the stepped portion 8C at the boundary between the two, and a light penetration element 11 is accommodated in the large diameter hole 8A with one end locked to the step 8C. It consists of a partition block 12 and a photoconductor 13 which is hermetically sealed and supported through the center of the partition block 12.
The space between the penetrating fitting 4 and the through fitting 4 is sealed with an O-ring 15, and the optical penetrating element 11 is fixed with a fixing ring 16 screwed into the large diameter hole 8A, and the large diameter hole of the penetrating fitting 4 is fixed. The tip of an insertion fitting 18 with a flange 17 is inserted into the inlet side of the section 8A with the flange 17 in contact with the high-pressure side end surface of the cylindrical protrusion 4A of the through fitting 4, and the insertion fitting 18 and An O-ring 19 is provided between the through-metal fitting 4,
20, the insertion fitting 18 is fixed to the penetrating fitting 4 with a cap nut 21 screwed onto the cylindrical protrusion 4A so as to press the flange 17, and the insertion fitting 18 has its low pressure in the center. A large-diameter ferrule set hole 23 opened at the side end surface and a cable insertion hole 24 smaller in diameter and opened at the high-voltage side end surface communicate with each other and have a step 25 at the boundary between the two. A ferrule 26 with a flange 26A is provided in the ferrule set hole 23.
The base of the ferrule set hole 2 is inserted into the ferrule set hole 2.
The ferrule 26 is disposed between the stepped portion 25 at the boundary between the light penetrating element 1 and the cable insertion hole 24 and the flange portion 26A of the ferrule 26.
A retaining ring 28 is provided with a spring 27 that urges the ferrule 26 toward the ferrule 1 side, and the flange 26A of the ferrule 26 comes into contact with the inner surface of the entrance side of the ferrule set hole 23 to prevent the ferrule 26 from coming off. are screwed together, and the cable insertion hole 24
The tip of the optical cable 30 is inserted therein, and the optical fiber core 31 led out from the tip of the optical cable 30 is supported through the center hole of the ferrule 26, and the tip of the ferrule 26 and the optical penetration element 11 are connected to each other. The embedded end surface of the photoconductor 13 is joined to the uneven optical axis alignment part 29, and the insertion fitting 18
and the optical cable 30.
What is claimed is: 1. A pressure-resistant optical cable bulkhead penetration section characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5232684A JPS60196705A (en) | 1984-03-21 | 1984-03-21 | Partition piercing part of optical cable of pressure resisting type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5232684A JPS60196705A (en) | 1984-03-21 | 1984-03-21 | Partition piercing part of optical cable of pressure resisting type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60196705A JPS60196705A (en) | 1985-10-05 |
| JPH0352841B2 true JPH0352841B2 (en) | 1991-08-13 |
Family
ID=12911665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5232684A Granted JPS60196705A (en) | 1984-03-21 | 1984-03-21 | Partition piercing part of optical cable of pressure resisting type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60196705A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171128A (en) * | 1995-12-20 | 1997-06-30 | Bridgestone Corp | Connection structure of optical transmission tube |
-
1984
- 1984-03-21 JP JP5232684A patent/JPS60196705A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60196705A (en) | 1985-10-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |