JP3529333B2 - Optical cable closure - Google Patents
Optical cable closureInfo
- Publication number
- JP3529333B2 JP3529333B2 JP2000204195A JP2000204195A JP3529333B2 JP 3529333 B2 JP3529333 B2 JP 3529333B2 JP 2000204195 A JP2000204195 A JP 2000204195A JP 2000204195 A JP2000204195 A JP 2000204195A JP 3529333 B2 JP3529333 B2 JP 3529333B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- water immersion
- tray
- water
- sensor
- 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 - Fee Related
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Cable Accessories (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は浸水検知機能を有す
る光ケーブル用クロージャに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical cable closure having a water immersion detection function.
【０００２】[0002]
【従来の技術】従来の一般的な光ケーブル用クロージャ
は、図１６に示すように、上下に２分割される構造のク
ロージャケース１内の両端に光ケーブル用固定具２がそ
れぞれ設けられ、前記光ケーブル用固定具２間に光ケー
ブル用テンションメンバ固定具３と、光ケーブル４の端
部から引き出された例えばテープ状の光ファイバ心線
（以下光心線という）同士を融着接続等により接続処理
してその余長部分を取り回した状態で収納する光心線収
納トレイ５とが設けられている。光心線収納トレイ５
は、クロージャケース１内に収納した連結棒６（内装物
品）上に複数枚積層された状態で設けられ、トレイ５内
は光心線の余長部分が収納されている。2. Description of the Related Art As shown in FIG. 16, a conventional general optical cable closure is provided with optical cable fixtures 2 at both ends in a closure case 1 having a structure that is divided into upper and lower parts. The optical fiber tension member fixing member 3 and the tape-shaped optical fiber core wires (hereinafter referred to as optical core wires) drawn out from the end of the optical cable 4 are connected between the fixing tools 2 by fusion splicing or the like. An optical fiber storage tray 5 is provided for storing the extra length portion in a stored state. Optical fiber storage tray 5
Are provided in a state where a plurality of them are stacked on the connecting rod 6 (interior article) housed in the closure case 1, and the extra length portion of the optical fiber is housed in the tray 5.
【０００３】また、最近では、光ケーブル接続部を収納
するクロージャケース内に水が侵入して光心線が劣化
し、光通信の信頼性が損なわれるのを防止するために、
クロージャケース１内に浸水センサ７を収納することが
多くなってきている。この浸水センサ７は、一方の光ケ
ーブル４の端部から引き出され、積層状態で積み重ねら
れた複数枚の光心線収納トレイ５の下側を左側へ取り回
して導かれる例えばテープ状の浸水検知用の光ファイバ
心線８（以下浸水検知光心線という）の途中に取り付け
られ、クロージャケース１内の前記連結棒６の下部に取
付け治具９で固定される。なお、この浸水検知光心線８
の先端は、他方（左側）の光ケーブル４の端部から引き
出され、前記光心線収納トレイ５の下側を右側へ取り回
して導かれた別の浸水検知光心線（図示せず）の先端と
融着接続等により接続処理されている。In recent years, in order to prevent water from entering a closure case for accommodating an optical cable connection portion and degrading the optical fiber and deteriorating the reliability of optical communication,
Increasingly, the water immersion sensor 7 is housed in the closure case 1. This water immersion sensor 7 is drawn out from one end of one optical cable 4, and is guided by arranging the lower side of a plurality of optical fiber bundle storage trays 5 stacked in a stacked state to the left side, for example, a tape-like water immersion detection device. It is attached in the middle of the optical fiber core wire 8 (hereinafter referred to as the water immersion detection optical core wire), and is fixed by a mounting jig 9 to the lower part of the connecting rod 6 in the closure case 1. It should be noted that this flood detection optical fiber 8
Of the optical fiber 4 on the other side (left side) is drawn out from the end of the optical cable 4 on the other side, and the tip of another optical fiber (not shown) for detecting water immersion is guided around the lower side of the optical fiber storage tray 5 to the right side. And the connection is processed by fusion splicing or the like.
【０００４】[0004]
【発明が解決しようとする課題】従来の光ケーブル用ク
ロージャを組み立てる場合、例えばテープ状の浸水検知
用以外の光ファイバ心線（以下非浸水検知光心線とい
う）は、その接続処理された余長部分を光心線収納トレ
イ５内に収納するのに対し、浸水検知光心線８は光心線
収納トレイ５の外側へ取り回して接続処理された余長部
分を該トレイ５とクロージャケース１間の狭い隙間に収
納し、かつ、該光心線８に浸水センサ７を取り付けて、
この浸水センサ７をトレイ下部の連結棒６に固定しなけ
ればならず、浸水検知光心線８の余長部分２の取り回し
工法が非浸水検知光心線の場合と異なって複雑となり、
作業に手間がかかるという問題があった。When assembling a conventional optical cable closure, for example, a tape-shaped optical fiber other than the one for detecting water immersion (hereinafter referred to as "non-water-infiltration optical fiber") is subjected to a connection excess length. While the part is housed in the optical fiber storage tray 5, the water immersion detection optical fiber 8 is routed to the outside of the optical fiber storage tray 5 and an extra length portion connected and processed is provided between the tray 5 and the closure case 1. Stored in a narrow gap, and attach the water immersion sensor 7 to the optical fiber 8
This water immersion sensor 7 must be fixed to the connecting rod 6 at the bottom of the tray, and the construction method of the extra length portion 2 of the water immersion detection optical fiber 8 becomes complicated unlike the case of the non-water immersion optical fiber,
There was a problem that it took time to work.
【０００５】また、浸水センサ７を取り付ける浸水検知
光心線８の接続処理された余長部分は、光心線収納トレ
イ５の外側へ取り回し、クロージャケース１との間の狭
い隙間に収納するため、該光心線８を取り回す余長部分
が必要以上に長くなって、該光心線８が連結棒６等と干
渉し、光損失が増加して浸水センサを誤動作又は性能低
下させる原因となり、さらに断線して浸水検知が困難又
は不能になる危険性が高くなる問題があった。In addition, the excess length portion of the water immersion detection optical fiber 8 to which the water immersion sensor 7 is attached is connected to the outside of the optical fiber optical fiber storage tray 5 and is stored in a narrow gap between the optical fiber cable storage tray 5 and the closure case 1. , The extra length around the optical fiber 8 becomes unnecessarily long, the optical fiber 8 interferes with the connecting rod 6 and the like, and the optical loss increases, causing malfunction or performance deterioration of the water immersion sensor. Further, there has been a problem that the risk of becoming more difficult or impossible to detect due to the disconnection becomes high.
【０００６】このような問題を解決するため、浸水検知
光心線８の余長部分と該光心線８に取り付けられた浸水
センサ７とを浸水検知光心線収納トレイ内に収納するこ
とも行われている。この場合、浸水センサ７は該収納ト
レイ内の空きスペースに置くか、粘着テープで固定して
いる。In order to solve such a problem, it is also possible to store the extra length portion of the water immersion optical fiber 8 and the water immersion sensor 7 attached to the optical fiber 8 in the water immersion optical fiber storage tray. Has been done. In this case, the water immersion sensor 7 is placed in an empty space in the storage tray or fixed with an adhesive tape.
【０００７】このようにすると、該光心線８を取り回す
余長部分が必要以上に長くなる問題は解消される。とこ
ろが、浸水センサ７は浸水検知光心線収納トレイ内に置
いて収納するか、或いは粘着テープで固定して移動しな
いように固定しているだけなので、該センサの固定が十
分ではなく、浸水センサ７が収納トレイ内で動いてしま
うことがある。このため、浸水検知光心線８が浸水セン
サ７と干渉して同様に光損失や断線の危険性が増加する
問題があった。By doing so, the problem that the extra length around the optical fiber 8 becomes longer than necessary is solved. However, since the water immersion sensor 7 is either placed and stored in the water immersion optical fiber core storage tray or is fixed by an adhesive tape so as not to move, the sensor is not fixed sufficiently and the water immersion sensor is not fixed. 7 may move in the storage tray. For this reason, there is a problem that the water immersion detection optical fiber 8 interferes with the water immersion sensor 7 and the risk of light loss and wire breakage increases.
【０００８】また、浸水検知光心線収納トレイ内の前記
空きスペースを小さくすれば、浸水センサ７の移動を防
止することもできるが、今度は、浸水検知光心線８の余
長部分を浸水検知光心線収納トレイ内で取り回すことが
容易でなくなり、さらに、該光心線８が保証半径以下に
曲げられるか、或いは浸水センサと干渉する恐れが生
じ、光損失や断線の危険性が高くなる問題があった。Further, if the empty space in the water immersion detection optical fiber line storage tray is made small, movement of the water immersion sensor 7 can be prevented, but this time, the extra length of the water immersion detection optical fiber line 8 is inundated. It becomes difficult to handle the optical fiber in the detection optical fiber storage tray, and the optical fiber 8 may be bent to a radius less than the guaranteed radius or may interfere with the water immersion sensor, resulting in a risk of optical loss or disconnection. There was a problem of getting higher.
【０００９】本発明は前記の問題を解決し、浸水検知光
心線の光損失や断線の危険性を減少させ、確実に浸水検
知ができる光ケーブル用クロージャを提供するものであ
る。The present invention provides a closure for an optical cable which solves the above problems, reduces the risk of optical loss and disconnection of the optical fiber for detecting water immersion, and can reliably detect water immersion.
【００１０】[0010]
【課題を解決するための手段】本発明は前記の課題を解
決するために下記のような手段を有している。本発明に
おいて、請求項１に記載された光ケーブル用クロージャ
は、クロージャケース内の両端に光ケーブル用固定具が
それぞれ設けられ、前記光ケーブル用固定具間に光ケー
ブル用テンションメンバ固定具と、浸水検知光心線の余
長部分を収納する浸水検知光心線収納トレイ及び非浸水
検知光心線の余長部分を収納する非浸水検知光心線収納
トレイからなる光心線収納トレイとが設けられ、前記浸
水検知光心線収納トレイ内に浸水センサが収納されてい
るものにおいて、前記浸水検知光心線収納トレイは、浸
水検知光心線の余長部分を収納するトレイ本体と蓋体と
を備え、該トレイ本体内の下部に浸水センサを固定する
係止固定部が設けられている。The present invention has the following means in order to solve the above problems. In the present invention, the optical cable closure according to claim 1 is provided with optical cable fixtures at both ends in the closure case, and the optical cable tension member fixture and the water immersion detection optical core are provided between the optical cable fixtures. An optical fiber line storage tray comprising a water immersion detection optical fiber line storage tray for storing the extra length part of the line and a non-water immersion detection optical fiber line storage tray for storing the extra length part of the non-water immersion detection optical fiber line is provided. In the one in which a water immersion sensor is housed in the water immersion detection optical fiber core storage tray, the water immersion detection optical fiber core storage tray includes a tray body and a lid body for accommodating an extra length portion of the water immersion detection optical fiber core, A lock fixing portion for fixing the water immersion sensor is provided in the lower portion inside the tray body.
【００１１】請求項２に記載された光ケーブル用クロー
ジャは、請求項１に記載された係止固定部が、浸水検知
光心線収納トレイのトレイ本体が前記クロージャケース
内に設けられる際に下側となる底壁にこれより下方へ突
出するように形成された、浸水センサの吸水性樹脂物ま
たは、吸水発熱物からなる反応部を係止する凹溝部と、
トレイ本体の前記底壁に略直交する側壁の下部に形成さ
れた、浸水センサの前記反応部の反応を浸水検知光心線
に加える作動部を係止する穴部と、前記トレイ本体の前
記側壁の下部及び凹溝部に形成されたものである。According to a second aspect of the present invention, there is provided a closure for an optical cable, wherein the locking and fixing portion according to the first aspect is a tray body of a water immersion detection optical fiber storage tray.
When it is installed inside, it projects downward from the bottom wall that is the lower side.
Water-absorbent resin material of the water immersion sensor
Or a recessed groove portion that locks the reaction portion made of a water-absorbing exothermic substance,
An optical fiber core for detecting the reaction of the reaction part of the water immersion sensor formed in the lower part of the side wall substantially orthogonal to the bottom wall of the tray body.
And the hole for locking the operating portion to be added to, and is formed on the bottom and the groove portion of the side wall of the tray body.
【００１２】請求項３に記載された光ケーブル用クロー
ジャは、請求項１に記載された係止固定部が、浸水検知
光心線収納トレイのトレイ本体の前記側壁の前記クロー
ジャケース内に設けられる際に下側となる下部に浸水セ
ンサの前記反応部外面を取り囲んで押える固定部本体と
前記固定部本体から前記トレイ本体の側壁に伸びる両脚
部を有する浸水センサ固定具と、前記両脚に形成された
係止ピンと、前記側壁に形成され、前記係止ピンが係入
される係止穴を有するものである。[0012] claims the optical cable closure as claimed in claim 3, engagement fixing portion according to claim 1, wherein the claw of the side wall of detecting water light cord storage tray of the tray body
A fixing body for pressing surrounding the reaction part outer surface of the immersion sensor into the bottom of the lower side when provided in the Ja case
Both legs extending from the fixed part main body to the side wall of the tray main body
And flood sensors fixture having a part, and a locking pin formed on the legs, formed in the side walls, the locking pin and has a locking hole to be engaged.
【００１３】請求項４に記載された光ケーブル用クロー
ジャは、請求項１に記載された係止固定部が、浸水検知
光心線収納トレイのトレイ本体の前記側壁の前記クロー
ジャケース内に設けられる際に下側となる下部に形成さ
れた、浸水センサの前記作動部を係止する穴部と、浸水
センサの両側部と前記クロージャケース内に設けられる
際の前記浸水センサの上部近傍に前記の側壁の下部から
突出するように設けられた浸水検知光心線ガイドと、前
記トレイ本体内に収納された浸水検知光心線の余長部分
及び該トレイ本体の内周縁に内側へ突設された複数の余
長部分押え爪の間に挿入介在される押えシートとにより
構成されるものである。請求項５に記載された光ケーブ
ル用クロージャは、請求項２に記載されたものにおい
て、浸水検知光心線収納トレイのトレイ本体の前記側壁
の下部に固定される前記クロージャケース内に設けられ
る際の前記浸水センサの上部近傍にトレイ本体の下部側
壁から突出させて浸水検知光心線ガイドを設けて構成さ
れるものである。According to a fourth aspect of the present invention, there is provided an optical cable closure in which the locking and fixing section according to the first aspect is provided in the closure case of the side wall of the tray body of the water immersion detection optical fiber cable storage tray. A hole formed in the lower part that is the lower side to lock the operating part of the water immersion sensor, both side parts of the water immersion sensor and the side wall near the upper part of the water immersion sensor when provided in the closure case. Of the water immersion detection optical core provided so as to project from the lower part of the tray, a plurality of extra lengths of the optical detection optical core stored in the tray body, and a plurality of inward projections on the inner peripheral edge of the tray body. And a presser sheet that is inserted and interposed between the extra-length part presser claws. An optical cable closure according to a fifth aspect is the closure for an optical cable according to the second aspect, which is provided in the closure case fixed to a lower part of the side wall of the tray body of the water immersion detection optical fiber storage tray. A water immersion detection optical fiber guide is provided near the upper part of the water immersion sensor so as to protrude from the lower side wall of the tray body.
【００１４】本発明の請求項１記載の光ケーブル用クロ
ージャによれば、クロージャケース内に侵入する水を検
知する浸水センサが、前記浸水検知光心線収納トレイの
トレイ本体内の下部に設けられた係止固定部でしっかり
固定されるので、浸水センサが浸水検知光心線収納トレ
イ内で簡単には移動しなくなる。このため、浸水検知光
心線が浸水センサと干渉することがなくなり、また、浸
水センサの移動防止のために浸水検知光心線収納トレイ
内の空きスペースを過度に狭くする必要もないので、浸
水検知光心線の余長部分を該トレイ内で取り回すことが
容易なほか、該光心線が保証半径以下に曲げられること
もなくなり、該心線の光損失が減少する。従って、浸水
センサの誤動作や性能低下を防止することができる。ま
た該心線が断線して浸水検知が困難又は不能になる危険
性を少なくすることができる。According to the optical cable closure of the first aspect of the present invention, the water immersion sensor for detecting water invading the closure case is provided in the lower portion of the tray body of the water immersion detection optical fiber storage tray. Since it is firmly fixed by the locking and fixing portion, the water immersion sensor does not easily move in the water immersion detection optical fiber core storage tray. For this reason, the flood detection optical fiber core will not interfere with the flood sensor, and it is not necessary to make the empty space in the flood detection fiber core storage tray excessively narrow to prevent movement of the flood sensor. The extra length of the detection optical fiber can be easily routed in the tray, the optical fiber is not bent below the guaranteed radius, and the optical loss of the optical fiber is reduced. Therefore, it is possible to prevent the malfunction and performance deterioration of the water immersion sensor. Further, it is possible to reduce the risk that the core wire is broken and the detection of water infiltration becomes difficult or impossible.
【００１５】また、請求項２及び４記載の光ケーブル用
クロージャによれば、浸水センサを固定する係止固定部
が、浸水検知光心線収納トレイのトレイ本体の下部側壁
に形成された浸水センサの作動部を係止する穴部を有
し、該穴部に浸水センサの作動部を嵌め込んで、浸水セ
ンサを係止するようにしたので、該クロージャの取付け
状態が種々変更されても、使用中に地震その他の振動が
作用されても、浸水センサの移動を確実に防止すること
が可能で、長期間安定した浸水検知機能を保持すること
ができる。Further, according to the optical cable closure of the second and the fourth aspects, the locking fixing portion for fixing the water immersion sensor is formed on the lower side wall of the tray body of the water immersion detection optical fiber storage tray. Since there is a hole for locking the operating part and the operating part of the water immersion sensor is fitted into the hole to lock the water immersion sensor, even if the mounting state of the closure is changed, it can be used. Even if an earthquake or other vibration is applied inside, it is possible to reliably prevent the movement of the inundation sensor, and it is possible to maintain a stable inundation detection function for a long period of time.
【００１６】また、請求項３記載の光ケーブル用クロー
ジャによれば、浸水センサを固定する係止固定部が、略
Ωの固定具本体を有する浸水センサ固定具で構成されて
いるので、浸水センサを確実に固定することができるほ
か、浸水センサの取付け、取外しが容易でその保守管理
を手軽に行うことができる。Further, according to the optical cable closure of the third aspect, since the locking fixing portion for fixing the water immersion sensor is constituted by the water immersion sensor fixing tool having the fixing tool body of approximately Ω, In addition to being securely fixed, the water immersion sensor can be easily attached and detached, and its maintenance management can be performed easily.
【００１７】さらに、請求項５記載の光ケーブル用クロ
ージャによれば、浸水検知光心線収納トレイのトレイ本
体に固定される浸水センサの上部近傍に浸水検知光心線
ガイドが設けられているので、浸水検知光心線の余長部
分を浸水検知光心線収納トレイ内に取り回す際、或いは
該収納トレイ内に収納した後、該光心線が浸水センサ内
にもぐり込んで浸水センサに引っ掛かることがなくな
る。よって、浸水センサと干渉を起こすことがなくな
り、該光心線の光損失及び断線の危険性がより減少し、
浸水センサの浸水検知の信頼性を高めることができる。Further, according to the optical cable closure of the fifth aspect, since the water immersion detection optical fiber core guide is provided in the vicinity of the upper part of the water immersion sensor fixed to the tray main body of the water immersion optical fiber core storage tray, When the extra length portion of the water immersion detection optical fiber is routed in the water detection optical fiber storage tray or after being stored in the storage tray, the optical fiber may also get caught in the water immersion sensor and get caught in the water immersion sensor. Disappear. Therefore, it does not cause interference with the water immersion sensor, and the risk of light loss and disconnection of the optical core wire is further reduced,
The reliability of water detection of the water sensor can be improved.
【００１８】[0018]
【発明の実施の形態】次に本発明の実施の形態を図面に
基づいて詳細に説明する。図１は本発明の一実施形態の
光ケーブル用クロージャ１０を示すものである。この光
ケーブル用クロージャ１０は、上下に２分割される構造
の樹脂成形品からなるクロージャケース１２内の両端に
光ケーブル用固定具１４がそれぞれ設けられ、前記光ケ
ーブル用固定具１４間に光ケーブル用テンションメンバ
固定具１６と、光心線収納トレイ２４とが設けられてい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an optical cable closure 10 according to an embodiment of the present invention. This optical cable closure 10 is provided with optical cable fixing tools 14 at both ends in a closure case 12 made of a resin molded product having a structure that is divided into two parts, and an optical cable tension member is fixed between the optical cable fixing tools 14. The tool 16 and the optical fiber line storage tray 24 are provided.
【００１９】この光心線収納トレイ２４は、図１
（イ）、図２に示すように、２本の光ケーブル１８の端
部から引き出された浸水検知光心線２０同士を融着接
続、コネクタ接続等により接続処理して余長部分を収納
する浸水検知光心線収納トレイ２６と、非浸水検知光心
線２２同士を融着接続、コネクタ接続等により接続処理
して余長部分を収納する非浸水検知光心線収納トレイ２
８とで構成される。この光心線収納トレイ２４は、図２
に示すように、クロージャケース１２内に設けられたコ
の字形状の例えばＦＲＰで出来た連結棒３０（内装物
品）上に、トレイ収納受け枠３２を介して横方向に並列
して配設される。この場合、非浸水検知光心線収納トレ
イ２８は１９個、浸水検知光心線収納トレイ２６は１個
準備され、浸水検知光心線収納トレイ２６がトレイ収納
受け枠３２の一番外側（図２で一番左側）に配設され
る。The optical fiber storage tray 24 is shown in FIG.
(A), as shown in FIG. 2, the inundation detecting optical fiber cores 20 drawn out from the end portions of the two optical cables 18 are connected by fusion splicing, connector connection, or the like to store the extra length portion. Non-immersion detection optical fiber line storage tray 2 in which the detection optical fiber line storage tray 26 and the non-water immersion detection optical fiber lines 22 are connected by fusion connection, connector connection, or the like to store the extra length portion.
8 and. This optical fiber storage tray 24 is shown in FIG.
As shown in FIG. 3, the U-shaped connecting rod 30 (interior article) provided in the closure case 12 (interior article) is disposed in parallel in the lateral direction via the tray storage receiving frame 32. It In this case, 19 non-immersion detection optical fiber line storage trays 28 and 1 water immersion detection optical fiber line storage tray 26 are prepared, and the water immersion detection optical fiber line storage tray 26 is the outermost side of the tray storage receiving frame 32 (see FIG. It is installed on the leftmost side in 2).
【００２０】非浸水検知光心線収納トレイ２８は、図３
に示すように、扁平箱型状をしており、非浸水検知光心
線２２の余長部分を収納する矩形箱型のトレイ本体３４
とこれにヒンジ３６で開閉自在に取り付けられた矩形板
状の蓋体３８とを備えている。なお、４０はトレイ本体
３４の下部の長手方向両端に設けられた光心線出入口、
４２はトレイ本体３４内に非浸水検知光心線２２の余長
部分を取り回して収納するため、トレイ本体３４の側壁
に設けられた内外二重構造の取り回し胴、４３は非浸水
検知光心線２２の接続部を固定するための押え具、４４
はトレイ本体３４の内周縁に周方向へ適当間隔をおいて
突設され、トレイ本体３４内の取り回し胴４２上に収納
された非浸水検知光心線２２の余長部分がトレイ本体３
４の開口部からはみださないように押える複数の余長部
分押え爪、４６は余長部分押え爪４４、４４の間から収
納済みの非浸水検知光心線２２の余長部分がはみださな
いように、前記余長部分押え爪４４と非浸水検知光心線
２２の余長部分間の隙間に挿入介在される例えばプラス
チック製の押えシート４６である。この押えシート４６
は長円形状シートを中央で二つに切断して出来た半長円
形状シートを２枚横に並べて配置される。このようにし
て収納トレイ２８内に、非浸水検知光心線２２の余長部
分が収納された後、前記蓋体３８が閉じられる。この収
納トレイ２８は前記トレイ収納受け枠３２内に配設され
る。The non-immersion detecting optical fiber storage tray 28 is shown in FIG.
As shown in FIG. 4, the tray body 34 has a flat box shape and is a rectangular box shape that accommodates the extra length portion of the non-immersion detection optical fiber 22.
And a rectangular plate-shaped lid 38 attached to the hinge 36 so as to be openable and closable. In addition, 40 is an optical fiber entrance / exit provided at both ends in the longitudinal direction of the lower portion of the tray main body 34,
Reference numeral 42 designates an extra length portion of the non-immersion detecting optical fiber line 22 in the tray body 34 for accommodating and storing it. A presser foot for fixing the connection part of 22; 44
Is provided on the inner peripheral edge of the tray main body 34 at appropriate intervals in the circumferential direction, and the extra length portion of the non-immersion detecting optical fiber core 22 housed on the handling cylinder 42 in the tray main body 34 is the tray main body 3
A plurality of extra length holding claws that can be pressed so as not to protrude from the opening of No. 4 and a portion 46 between the extra length holding claws 44, 44 A pressing sheet 46 made of, for example, a plastic is inserted and inserted in the gap between the extra-length portion holding claw 44 and the extra-length portion of the non-immersion detecting optical fiber 22 so as not to protrude. This presser sheet 46
Is a semi-elliptical sheet formed by cutting an elliptical sheet into two at the center and arranged side by side. In this way, after the extra length portion of the non-immersion detection optical fiber core 22 is stored in the storage tray 28, the lid 38 is closed. The storage tray 28 is arranged in the tray storage receiving frame 32.
【００２１】浸水検知光心線収納トレイ２６は、図４に
示すものである。この収納トレイ２６は、該トレイ本体
３４内の下部に浸水センサ４８を固定する係止固定部５
０が設けられるほかは、非浸水検知光心線収納トレイ２
８と構造が実質同一なので説明を省略する。The water immersion detection optical fiber storage tray 26 is shown in FIG. The storage tray 26 has a locking and fixing portion 5 for fixing the water immersion sensor 48 to the lower portion inside the tray body 34.
0 is provided, and non-immersion detection optical fiber core storage tray 2
Since the structure is substantially the same as that of No. 8, description will be omitted.
【００２２】浸水センサ４８は、例えばポリアクリル酸
塩のような吸水性樹脂物で形成された反応部４８ａと、
その上方に浸水検知光心線２０を挟み込める隙間を設け
て、所定曲率半径の凸部（図示せず）を有し、この凸部
が浸水検知光心線２０に当接するように形成された作動
部４８ｂで構成される。そして、反応部４８ａ内に水が
入り、前記吸水性樹脂物が吸水膨潤して膨らんだとき、
押圧力が浸水検知光心線２０に加わり、該心線２０が作
動部４８ｂの凸部に押し付けられ所定曲率半径で曲げら
れて光損失が生じる。この光損失量を測定することによ
り、浸水有無が検知できるようになっている。The water immersion sensor 48 includes a reaction portion 48a formed of a water absorbent resin material such as polyacrylate.
A gap (not shown) having a predetermined radius of curvature is provided above the above so as to sandwich the water immersion detection optical fiber 20, and the projection is formed so as to abut the water detection optical fiber 20. It is composed of the operating part 48b. When water enters the reaction portion 48a and the water-absorbent resin material swells by absorbing water,
A pressing force is applied to the inundation detection optical core wire 20, the core wire 20 is pressed against the convex portion of the operating portion 48b and bent with a predetermined radius of curvature, and an optical loss occurs. By measuring this amount of light loss, the presence or absence of water infiltration can be detected.
【００２３】なお、浸水センサ４８の反応部４８ａは吸
水することにより発熱して温度が上昇するような吸水発
熱物、例えば、カーバイド、石膏等の石灰系材料又は金
属ナトリウム等の材料で形成してもよい。この場合、作
動部４８ｂは反応部４８ａで発生した熱を伝達する良熱
伝導体又は同じ吸水発熱物で形成する。このような吸水
発熱物で反応部４８ａを形成した場合には、吸水発熱に
より所定温度に上昇した浸水検知光心線２０にレーザパ
ルス光を通して、温度に依存して変化するラマン散乱光
の強度の変化を分析し、該光心線２０の長手方向におけ
る温度分布状況を把握することにより、浸水有無、位置
を検知することが出来る。The reaction part 48a of the water immersion sensor 48 is formed of a water-absorbing exothermic substance which generates heat by absorbing water and its temperature rises, for example, a lime-based material such as carbide or gypsum, or a material such as metallic sodium. Good. In this case, the operating part 48b is formed of a good heat conductor or the same water-absorbing exothermic material that transfers the heat generated in the reaction part 48a. When the reaction part 48a is formed of such a water-absorbing exothermic substance, a laser pulse light is passed through the water-immersion detecting optical fiber 20 that has risen to a predetermined temperature due to the heat-absorption of water absorption, and the intensity of the Raman scattered light that changes depending on the temperature is changed. By analyzing the change and grasping the temperature distribution situation in the longitudinal direction of the optical fiber 20, it is possible to detect the presence or absence of water immersion and the position.
【００２４】係止固定部５０は図４乃至６に詳細に示す
ように、浸水検知光心線収納トレイ２６のトレイ本体３
４の下部側壁３４ａに形成された、浸水センサ４８の作
動部４８ｂを係止する穴部３４ｂと、トレイ本体３４の
底壁３４ｃにこれより下方へ突出するように形成され
た、浸水センサ４８の反応部４８ａを係止する凹溝部５
２と、トレイ本体３４の前記下部側壁３４ａに設けられ
浸水センサ４８の作動部４８ｂの上部を押える係止爪５
４及び凹溝部５２の両側縁に設けられた浸水センサ４８
の側部を押える係止爪５５とにより構成される。なお、
３４ｄは凹溝部５２のある下部側壁３４ａに形成された
水侵入用穴である。穴部３４ｂは図示するものでは貫通
穴であるが有底穴でもよい。As shown in detail in FIGS. 4 to 6, the locking and fixing portion 50 is the tray body 3 of the water immersion detection optical fiber storage tray 26.
4 is formed in the lower side wall 34a of the water immersion sensor 48 for locking the operating portion 48b of the water immersion sensor 48, and the bottom wall 34c of the tray body 34 is formed so as to project downward. Recessed groove portion 5 for locking the reaction portion 48a
2 and the locking claw 5 provided on the lower side wall 34a of the tray main body 34 and pressing the upper portion of the operating portion 48b of the water immersion sensor 48.
4 and the water immersion sensor 48 provided on both side edges of the concave groove portion 52.
And a locking claw 55 that presses the side portion of the. In addition,
34d is a water entry hole formed in the lower side wall 34a having the groove 52. The hole portion 34b is a through hole in the illustrated one, but may be a bottomed hole.
【００２５】前記のように、浸水センサ４８の作動部４
８ｂが前記穴部３４ｂに嵌め込まれて係止されている
と、該クロージャ１０の取付け状態が種々変更されて
も、使用中に地震その他の振動が作用されても、浸水セ
ンサの移動を確実に防止することが可能で、長期間安定
した浸水検知機能を保持することができる。As described above, the operating portion 4 of the water immersion sensor 48.
When 8b is fitted and locked in the hole 34b, the movement of the water immersion sensor is ensured even if the mounting state of the closure 10 is variously changed or an earthquake or other vibration is applied during use. It is possible to prevent this, and it is possible to maintain a stable inundation detection function for a long period of time.
【００２６】また、トレイ本体３４の下部側壁３４ａに
固定される浸水センサ４８の上部近傍には、図６（イ）
（ロ）に詳細に示すようにトレイ本体３４の下部側壁３
４ａから突出させて浸水検知光心線ガイド５６が設けら
れる。このガイド５６は横方向に突出する張出アーム５
６ａとその長手方向の中央突出端部から上方へ突き出る
フック部材５６ｂとで構成される。浸水検知光心線２０
の余長部分は、前記下部側壁３４ａ、張出アーム５６ａ
及びフック部材５６ｂによって囲まれた略Ｕ型通路を通
して取り回されて収納される。なお、前記係止爪５４は
前記張出アーム５６ａの長手方向中央の下面に設けられ
る。Further, in the vicinity of the upper portion of the water immersion sensor 48 fixed to the lower side wall 34a of the tray main body 34, FIG.
As shown in detail in (b), the lower side wall 3 of the tray main body 34
A water immersion detection optical fiber core guide 56 is provided so as to project from 4a. This guide 56 is a laterally protruding bulging arm 5
6a and a hook member 56b protruding upward from a central protruding end portion in the longitudinal direction thereof. Flood detection optical fiber 20
The extra length part of the lower side wall 34a and the protruding arm 56a
And, it is routed and stored through a substantially U-shaped passage surrounded by the hook member 56b. The locking claw 54 is provided on the lower surface of the protruding arm 56a at the center in the longitudinal direction.
【００２７】浸水センサ４８は、図１（イ）において、
一方（右側）の光ケーブル１８の端部から余長部分が引
き出され、図４の右側の光心線出入口４０からトレイ本
体３４内に導入された浸水検知光心線２０の途中に取り
付けられた後、その反応部４８ａが係止固定部５０の凹
溝部５２内に挿着されて収納されると共に、作動部４８
ｂが穴部３４ｂに挿入されて係止され、係止爪５４で押
えられて固定される。なお、浸水センサ４８の係止固定
部への取付けを容易にするために、浸水検知光心線ガイ
ド５６を若干トレイ本体３４の下部側壁３４ａから上方
へ傾けて係止爪５４を上方へ逃がし、浸水センサ４８の
挿着スペースを広げておくことが好ましい。The water immersion sensor 48 is shown in FIG.
After the extra length portion is pulled out from the end of the optical cable 18 on the one side (on the right side) and attached to the middle of the water immersion detection optical fiber 20 introduced into the tray body 34 from the optical fiber inlet / outlet 40 on the right side of FIG. The reaction portion 48a is inserted and housed in the recessed groove portion 52 of the locking and fixing portion 50, and the operating portion 48a
b is inserted into the hole 34b and locked, and is pressed and fixed by the locking claw 54. In order to facilitate the attachment of the water immersion sensor 48 to the locking fixing portion, the water immersion detection optical fiber guide 56 is slightly tilted upward from the lower side wall 34a of the tray body 34 to allow the locking claw 54 to escape upward. It is preferable to widen the space for inserting the water immersion sensor 48.
【００２８】そして、この浸水検知光心線２０の先端は
さらに取り回し胴４２上に下側から時計方向に半回転又
は１回転以上取り回されて上方に導出される。また、図
４には図示されないが、図１（イ）において、他方（左
側）の光ケーブル１８の端部から余長部分が引き出さ
れ、左側の光心線出入口４０からトレイ本体３４内に導
入された浸水検知光心線２０の先端は、反対側から取り
回し胴４２上に下側から半時計方向に半回転又は１回転
以上取り回されて上方へ導出される。そして、両光心線
２０、２０の先端同士が融着接続、コネクタ接続等によ
り接続処理されて、接続部が押え具４３により固定され
る。Then, the tip of the optical fiber 20 for detecting water immersion is further turned on the handling barrel 42 from the lower side in the clockwise direction by a half turn or one or more turns and led out upward. Although not shown in FIG. 4, in FIG. 1A, the extra length portion is pulled out from the end portion of the other (left) optical cable 18 and introduced into the tray main body 34 from the left optical fiber entrance 40. The front end of the water immersion detection optical fiber 20 is routed from the opposite side, and is routed from the lower side to the counterclockwise half a turn or one or more turns in the counterclockwise direction, and is led out upward. Then, the tips of the two optical fibers 20, 20 are connected by fusion splicing, connector connection, etc., and the connecting portion is fixed by the retainer 43.
【００２９】このようにして、前記トレイ本体３４に、
浸水センサ４８及び浸水検知光心線２０の余長部分が収
納された後、押えシート４６（図示せず）が挿着され
て、前記蓋体３８が閉じられる。この浸水検知用収納ト
レイ２６も同様に前記トレイ収納受け枠３２内に配設さ
れる。この場合、浸水検知光心線収納トレイ２６に収納
された浸水センサ４８の反応部４８ａは、その収納トレ
イ２６の底壁３４ｃ（図５参照）の外面及び非浸水検知
光心線収納トレイ２２の底壁の外面（トレイ最下面）よ
り下方に突出して設けられている。このような構成によ
り、クロージャケース１２内に侵入してきた水をいち早
く浸水センサ４８で検知することが可能になる。In this way, the tray body 34 is
After the water immersion sensor 48 and the extra length portion of the water immersion optical fiber core 20 are stored, a holding sheet 46 (not shown) is inserted and the lid 38 is closed. The infiltration detection storage tray 26 is also arranged in the tray storage receiving frame 32. In this case, the reaction part 48a of the water immersion sensor 48 housed in the water immersion detection optical fiber line storage tray 26 has the outer surface of the bottom wall 34c (see FIG. 5) of the storage tray 26 and the non-water immersion detection optical fiber line storage tray 22. It is provided so as to project downward from the outer surface of the bottom wall (the lowermost surface of the tray). With such a configuration, it is possible to quickly detect the water that has entered the closure case 12 with the water immersion sensor 48.
【００３０】なお、前記浸水検知光心線ガイド５６が設
けられていると、浸水検知光心線２０の余長部分を浸水
検知光心線収納トレイ２６内に取り回す際、或いは該収
納トレイ２６内に収納した後、該光心線２０が浸水セン
サ４８内にもぐり込んで浸水センサ４８に引っ掛かる等
しなくなる。よって、浸水センサ４８と干渉を起こさ
ず、該光心線４８の光損失が増加し、或いは断線する危
険性が減少し、さらに、浸水センサ４８の浸水検知の信
頼性を高めることができ好ましい。When the water immersion detection optical fiber core guide 56 is provided, when the extra length portion of the water immersion detection optical fiber core 20 is routed into the water immersion optical fiber core storage tray 26 or the storage tray 26. After being housed inside, the optical fiber 20 does not get caught in the water immersion sensor 48 and get caught in the water immersion sensor 48. Therefore, it is preferable that interference with the water immersion sensor 48 does not occur, the optical loss of the optical fiber 48 increases, or the risk of disconnection decreases, and the reliability of water detection of the water immersion sensor 48 can be improved.
【００３１】本実施形態の光ケーブル用クロージャ１０
は上記のような構成になっている。このようなクロージ
ャ１０を光ケーブル線路のケーブル接続部に設けて使用
中、クロージャケース１２内に水が侵入すると、クロー
ジャケース１２の底部に流れてくる。すると、この侵入
水が浸水検知用収納トレイ２６の下部に設けられた浸水
センサ４８の反応部４８ａに入り、反応部４８ａの吸水
性樹脂物が吸水膨潤して膨らみ、押圧力が作動部４８ｂ
に伝達されて、該浸水センサ４８により、クロージャケ
ース１２内に水が侵入したことを速やかに検知すること
ができる。Optical cable closure 10 of this embodiment
Is configured as described above. When such a closure 10 is provided at the cable connection portion of the optical cable line and is in use, when water enters the closure case 12, it flows to the bottom of the closure case 12. Then, this invading water enters the reaction part 48a of the water infiltration sensor 48 provided in the lower part of the water intrusion detection storage tray 26, the water-absorbent resin material of the reaction part 48a swells due to water absorption, and the pressing force acts on the operating part 48b.
Then, the infiltration sensor 48 can promptly detect that water has entered the closure case 12.
【００３２】図７に示すものは、図４に示すものとは異
なる浸水検知用収納トレイ５８を示すものである。この
収納トレイ５８は矩形箱型のトレイ本体６０とこれにヒ
ンジ３６で開閉自在に取り付けられた同一大きさを有す
る矩形箱型の蓋体６２とを備えている。これらトレイ本
体６０と蓋体６２内には、それぞれ浸水検知光心線２０
の余長部分を収納する取り回し胴６８が設けられてい
る。また、該トレイ本体６０内の下部側壁６０ａには、
浸水センサ４８を固定するために、図５、６に記載した
ものとは異なる構造の係止固定部６４が設けられる。FIG. 7 shows a storage tray 58 for water immersion detection different from that shown in FIG. The storage tray 58 includes a rectangular box-shaped tray body 60 and a rectangular box-shaped lid body 62 having the same size and attached to the tray main body 60 so as to be openable and closable by a hinge 36. In the tray body 60 and the lid 62, the water immersion detection optical fiber 20
A manipulating barrel 68 is provided for accommodating the extra length portion. In addition, the lower side wall 60a in the tray body 60 is
In order to fix the water immersion sensor 48, a locking fixing portion 64 having a structure different from that shown in FIGS. 5 and 6 is provided.
【００３３】この係止固定部６４は、図８に示すよう
に、前記トレイ本体６０の下部側壁６０ａに形成され
た、浸水センサ４８の反応部４８ａを押える略Ω型の固
定具本体６６ａと、その両脚６６ｂ下部に突設され、浸
水センサ両側部近傍の下部側壁６０ａに形成されている
係止穴６０ｂに係入する係止ピン６６ｃとからなる浸水
センサ固定具６６で構成される。なお、６６ｄは浸水セ
ンサ固定具６６の固定具本体６６ａの頭部に形成された
水侵入用凹溝である。浸水センサ４８は、図８に示すよ
うに、一方の光ケーブル１８の端部から余長部分が引き
出され、図９の右側の光心線出入口４０からトレイ本体
６０内に導入された浸水検知光心線２０の途中に取り付
けられ、その反応部４８ａが係止固定部６４である浸水
センサ固定具６６の固定具本体６６ａで押えられ、係止
ピン６６ｃが係止穴６０ｂに係入することにより固定さ
れる。As shown in FIG. 8, the locking and fixing portion 64 is a substantially Ω type fixture body 66a formed on the lower side wall 60a of the tray body 60 for pressing the reaction portion 48a of the water immersion sensor 48, A water immersion sensor fixing tool 66 is provided, which is protruded from the lower portions of both legs 66b and has a locking pin 66c that engages with a locking hole 60b formed in a lower side wall 60a near both sides of the water leakage sensor. Reference numeral 66d is a water intrusion groove formed in the head of the fixture body 66a of the water immersion sensor fixture 66. As shown in FIG. 8, the water immersion sensor 48 has a surplus portion pulled out from the end of one optical cable 18, and the water immersion detection optical core introduced into the tray main body 60 from the optical core line inlet / outlet 40 on the right side of FIG. 9. The reaction part 48a is attached in the middle of the wire 20, and the reaction part 48a is pressed down by the fixing tool body 66a of the water immersion sensor fixing tool 66 which is the locking fixation part 64, and the locking pin 66c is engaged with the locking hole 60b to be fixed. To be done.
【００３４】図９は浸水センサ４８が浸水センサ固定具
６６でトレイ本体６０の下部側壁６０ａに固定された状
態を示す。このように、浸水センサ固定具６６で浸水セ
ンサ４８を係止固定することにより、浸水センサ４８を
確実に固定することができるほか、浸水センサ４８の取
付け、取外しが容易となり、該センサの保守管理を手軽
に行うことができる。FIG. 9 shows a state in which the water immersion sensor 48 is fixed to the lower side wall 60a of the tray body 60 by the water immersion sensor fixture 66. As described above, by locking and fixing the water immersion sensor 48 with the water immersion sensor fixture 66, the water immersion sensor 48 can be reliably fixed, and the water immersion sensor 48 can be easily attached and detached, and maintenance of the sensor can be performed. Can be done easily.
【００３５】さらに、この浸水検知光心線２０の先端
は、取り回し胴６８上にその下側から図９で時計方向に
例えば１回転取り回されて上方へ導出される。また、他
方の光ケーブル１８の端部から余長部分が引き出され、
左側の光心線出入口４０からトレイ本体６０内に導入さ
れた浸水検知光心線２０の先端は、反対側から取り回し
胴６８上に図９で反時計方向へ例えば１回転取り回され
て上方へ導出される。そして、両光心線２０、２０の先
端同士が融着接続、コネクタ接続等により接続処理さ
れ、外側に熱収縮性補強スリーブを被せた接続部６９が
押え具４３により固定される。Furthermore, the tip of this optical fiber 20 for detecting water immersion is guided, for example, one turn clockwise in FIG. In addition, the extra length portion is pulled out from the end of the other optical cable 18,
The tip of the water immersion detection optical fiber 20 introduced into the tray body 60 from the optical fiber inlet / outlet 40 on the left side is routed from the opposite side to the upper side of the handling cylinder 68 in the counterclockwise direction in FIG. Derived. Then, the tips of the two optical fibers 20, 20 are connected to each other by fusion splicing, connector connection, etc., and the connecting portion 69 covered with a heat-shrinkable reinforcing sleeve on the outside is fixed by the retainer 43.
【００３６】このように、前記トレイ本体６０に浸水セ
ンサ４８と浸水検知光心線２０の余長部分とが収納固定
された後、該心線２０の余長部分と余長部分押え爪４４
との間の隙間に、下面の中央部に浸水センサ４８及び浸
水センサ固定具６６が逃げ溝７０ａを有する長円形状の
押えシート７０が挿着され、前記光心線２０の余長部分
が前記余長部分押え爪４４、４４の間からはみ出さない
ようになっている。押えシート挿着後、前記蓋体６２が
閉じられ、浸水検知光心線収納トレイ５８がトレイ収納
受け枠７２内に配設される（図１０、１１参照）。As described above, after the water immersion sensor 48 and the extra length portion of the optical entry fiber core 20 are housed and fixed in the tray body 60, the extra length portion of the core wire 20 and the extra length portion holding claw 44 are held.
An oval pressing sheet 70 having an escape groove 70a in which the water immersion sensor 48 and the water immersion sensor fixture 66 are provided in the central portion of the lower surface is inserted into a gap between the optical fiber 20 and the extra length portion of the optical fiber 20. The extra-length portion pressing claws 44, 44 are designed not to protrude from between them. After the pressing sheet is inserted, the lid 62 is closed, and the water immersion detection optical fiber storage tray 58 is arranged in the tray storage receiving frame 72 (see FIGS. 10 and 11).
【００３７】非浸水検知光心線収納トレイ７４（図１
０、１１参照）は、浸水検知光心線収納トレイ５８内の
下部に浸水センサ４８及びこれを押える係止固定部６４
（浸水センサ固定具６６）が設けられないほかは、前記
浸水検知光心線収納トレイ５８と構造が実質同一なので
説明を省略する。Non-immersion detection optical fiber storage tray 74 (see FIG. 1)
0 and 11) are the water immersion sensor 48 and a locking fixing portion 64 that presses the water immersion sensor 48 in the lower portion of the water immersion detection optical fiber cable storage tray 58.
The structure is substantially the same as that of the water-immersion detecting optical fiber storage tray 58 except that the (water-immersion sensor fixing tool 66) is not provided, and a description thereof will be omitted.
【００３８】それぞれ内部に前記光心線２０、２２の余
長部分が収納された浸水検知光心線収納トレイ５８、非
浸水検知光心線収納トレイ７４は、図１０、１１に示す
ように、クロージャケース１２内のトレイ収納受け枠７
２内に横方向に並列して配設される。この場合、浸水検
知光心線収納トレイ５８は、トレイ収納受け枠７２の一
番外側（図１０、１１で一番右側）で、浸水センサ４８
を固定する浸水センサ固定具６６の係止ピン６６ｃがト
レイ収納受け枠７２の内側壁に対向するように位置させ
（図１０参照）、さらに、非浸水検知光心線収納トレイ
７４の底面よりも、浸水センサ４８の少なくとも反応部
４８ａが下方に突出するように一段低く配設される。こ
のように、浸水検知光心線収納トレイ５８を一段低く配
設することにより、クロージャケース１２内に侵入した
水をいち早く検知することが可能となる。As shown in FIGS. 10 and 11, the water immersion detection optical fiber cable storage tray 58 and the non-water immersion detection optical fiber cable storage tray 74, respectively, in which the extra lengths of the optical fiber cables 20 and 22 are stored, are shown in FIGS. Tray storage receiving frame 7 in the closure case 12
2 are arranged in parallel in the lateral direction. In this case, the water immersion detection optical fiber core storage tray 58 is located on the outermost side of the tray storage receiving frame 72 (on the rightmost side in FIGS.
The locking pin 66c of the water immersion sensor fixing tool 66 for fixing the water immersion sensor fixing tool 66 is positioned so as to face the inner wall of the tray storage receiving frame 72 (see FIG. 10), and further than the bottom surface of the non-water immersion detection optical fiber line storage tray 74. , The water immersion sensor 48 is arranged one step lower so that at least the reaction portion 48a projects downward. In this way, by arranging the water immersion detection optical fiber storage tray 58 one step lower, it is possible to quickly detect water that has entered the closure case 12.
【００３９】図１２に示すものは、図４、７に示すもの
とはさらに異なる浸水検知光心線収納トレイ７６を示す
ものである。この収納トレイ７６は、浸水検知光心線２
０の余長部分を有する矩形箱型のトレイ本体７８と、こ
れにヒンジ３６で開閉自在に取り付けられた矩形板状の
蓋体８０とを備えている。これらトレイ本体７８内に
は、浸水検知光心線２０の余長部分を収納する取り回し
胴８２が設けられている。また、該トレイ本体７８内の
下部側壁７８ａには、浸水センサ４８を固定するため
に、図５、６及び８に記載したものとはさらに異なる構
造の係止固定部８４が設けられる。FIG. 12 shows a water immersion detection optical fiber core storage tray 76 which is different from those shown in FIGS. This storage tray 76 is provided with the water immersion optical fiber 2
A rectangular box-shaped tray main body 78 having a zero extra length portion and a rectangular plate-shaped lid 80 attached to the tray main body 78 so as to be openable and closable by a hinge 36 are provided. In the tray main body 78, a handling barrel 82 for accommodating the extra length portion of the water immersion detection optical fiber 20 is provided. Further, the lower side wall 78a in the tray main body 78 is provided with a locking fixing portion 84 having a structure different from that shown in FIGS. 5, 6 and 8 for fixing the water immersion sensor 48.
【００４０】この係止固定部８４は、図１３、１４に示
すように、浸水検知光心線収納トレイ７６のトレイ本体
７８の下部側壁７８ａに形成された、浸水センサ４８の
作動部４８ｂを係止する穴部７８ｂと、浸水センサ４８
の両側部及び上部近傍において下部側壁７８ａから突出
するように設けられた浸水検知光心線ガイド８６と、前
記トレイ本体７８内に収納された浸水検知光心線２０の
余長部分及び該トレイ本体７８の内周縁に内側へ突設さ
れた複数の余長部分押え爪４４の間に挿入介在される押
えシート８８とにより構成される。As shown in FIGS. 13 and 14, the locking and fixing portion 84 engages with the operating portion 48b of the water immersion sensor 48 formed on the lower side wall 78a of the tray main body 78 of the water immersion detection optical fiber storage tray 76. Hole portion 78b for stopping and water sensor 48
Of the water immersion detection optical fiber line 86 provided so as to project from the lower side wall 78a in the vicinity of both sides and the upper part, and the extra length portion of the water immersion detection optical fiber line 20 housed in the tray body 78 and the tray body. The holding sheet 88 is inserted between a plurality of extra length portion holding claws 44 protruding inward from the inner peripheral edge of the holding sheet 78.
【００４１】浸水検知光心線ガイド８６は浸水センサ４
８の両側部近傍に突設された棒状ガイド８６ａと取り回
し胴８２の一部を構成するＬ型ガイド８２ａとより成
る。また、押えシート８８は、図１５に示すように、長
円形状シートを中央で二つに切断して出来た半長円形状
シートが用いられる。なお、浸水センサ４８の反応部４
８ａの底部は前記トレイ本体７８の底壁７８ｃで支持さ
れる。図１２で７８ｄは浸水センサ４８の反応部４８ａ
付近の下部側壁７８ａに形成された水侵入用穴である。The water immersion optical fiber guide 86 is used as the water immersion sensor 4.
8 includes a rod-shaped guide 86a projecting near both side portions and an L-shaped guide 82a forming a part of the manipulating barrel 82. Further, as the holding sheet 88, as shown in FIG. 15, a semi-elliptical sheet formed by cutting an elliptical sheet into two at the center is used. In addition, the reaction unit 4 of the water immersion sensor 48
The bottom of 8a is supported by the bottom wall 78c of the tray body 78. In FIG. 12, 78d is a reaction part 48a of the water sensor 48.
It is a water entry hole formed in the lower side wall 78a in the vicinity.
【００４２】浸水センサ４８は、一方の光ケーブル１８
の端部から余長部分が引き出され、図１２の右側の光心
線出入口４０からトレイ本体７８内に導入された浸水検
知光心線２０の途中に取り付けられ、その作動部４８ｂ
が係止固定部８４の穴部７８ｂに嵌め込まれて係止さ
れ、浸水検知光心線ガイド８６で移動が拘束される。前
記のように、浸水センサ４８の作動部４８ｂが前記穴部
７８ｂに嵌め込まれて係止されていると、該クロージャ
の取付け状態が種々変更されても、使用中に地震その他
の振動が作用しても、浸水センサ４８が容易に移動せ
ず、長期間安定した浸水検知機能を保持することができ
る。The water sensor 48 is connected to the optical cable 18 on one side.
The extra length portion is pulled out from the end portion of the water, and is attached in the middle of the water immersion detection optical core wire 20 introduced into the tray main body 78 from the optical core wire inlet / outlet 40 on the right side of FIG.
Is fitted and locked in the hole 78b of the locking and fixing portion 84, and its movement is restricted by the water immersion detection optical fiber guide 86. As described above, when the operating portion 48b of the water immersion sensor 48 is fitted and locked in the hole 78b, even if the mounting state of the closure is variously changed, an earthquake or other vibration may occur during use. However, the water immersion sensor 48 does not move easily, and a stable water immersion detection function can be maintained for a long period of time.
【００４３】さらに、この浸水検知光心線２０の先端は
取り回し胴８２上に下側から時計方向に半回転又は１回
転以上取り回されて上方に導出される。また、図１２に
は図示されないが、他方の光ケーブル１８の端部から余
長部分が引き出され、図１２の左側から導入された浸水
検知光心線２０の先端は、反対側から取り回し胴８２上
に下側から半時計方向に半回転又は１回転以上取り回さ
れて上方へ導出される。そして、両光心線２０、２０の
先端同士が融着接続、コネクタ接続等により接続処理さ
れて、接続部が押え具４３により固定される。このよう
にして、前記トレイ本体７８に、浸水センサ４８及び浸
水検知光心線２０の余長部分が収納された後、押えシー
ト８８が挿着されて、前記蓋体８０が閉じられる。この
浸水検知用収納トレイ７６は例えば図２に示すようなト
レイ収納受け枠３２内に配設される。Further, the front end of the water immersion detection optical fiber 20 is routed on the handling barrel 82 from the lower side in the clockwise direction by a half rotation or one or more rotations and is led out upward. Although not shown in FIG. 12, the extra length portion is pulled out from the end portion of the other optical cable 18, and the tip of the water immersion optical fiber core 20 introduced from the left side of FIG. From the lower side, it is turned around in the counterclockwise direction by a half turn or one or more turns, and is led out upward. Then, the tips of the two optical fibers 20, 20 are connected by fusion splicing, connector connection, etc., and the connecting portion is fixed by the retainer 43. In this way, after the water immersion sensor 48 and the extra length of the water immersion optical fiber core 20 are stored in the tray body 78, the pressing sheet 88 is inserted and the lid 80 is closed. The infiltration detection storage tray 76 is disposed in the tray storage receiving frame 32 as shown in FIG. 2, for example.
【００４４】非浸水検知光心線収納トレイ（図示せず）
は、浸水検知光心線収納トレイ７６内の下部に浸水セン
サ４８及びこれを押える係止固定部８４が設けられない
ほかは、前記浸水検知光心線収納トレイ７６と構造が実
質同一なので説明を省略する。Non-immersion detection optical fiber storage tray (not shown)
Since the structure is substantially the same as that of the water immersion detection optical fiber line storage tray 76, except that the water immersion sensor 48 and the locking fixing portion 84 that presses the water immersion sensor 48 are not provided in the lower portion of the water immersion detection optical fiber line storage tray 76. Omit it.
【００４５】それぞれ内部に前記光心線２０、２２の余
長部分が収納された浸水検知光心線収納トレイ７６及び
非浸水検知光心線収納トレイは、例えば、図２に示すト
レイ収納受け枠３２と同じような構造のトレイ収納受け
枠内に、浸水検知光心線収納トレイ７６が一番外側（例
えば図２で一番左側）に位置するように、横方向に並列
して配設される。The inundation detection optical core line storage tray 76 and the non-immersion detection optical core line storage tray in which the extra lengths of the optical core lines 20 and 22 are respectively housed are, for example, tray storage receiving frames shown in FIG. In the tray storage receiving frame having the same structure as 32, the water immersion detection optical fiber line storage trays 76 are arranged side by side in a lateral direction so as to be located on the outermost side (for example, the leftmost side in FIG. 2). It
【００４６】[0046]
【発明の効果】以上説明したように、本発明の請求項１
記載の光ケーブル用クロージャによれば、クロージャケ
ース内に侵入する水を検知する浸水センサが、前記浸水
検知光心線収納トレイのトレイ本体内の下部に設けられ
た係止固定部で固定されるので、浸水センサが浸水検知
光心線収納トレイ内で簡単には移動しなくなる。このた
め、浸水検知光心線が浸水センサと干渉することがなく
なり、また、浸水センサの移動防止のために浸水検知光
心線収納トレイ内の空きスペースを過度に狭くする必要
もないので、浸水検知光心線の余長部分を該トレイ内で
取り回すことが容易なほか、該光心線が保証半径以下に
曲げられることもなくなり、該心線の光損失が減少す
る。従って、浸水センサの誤動作や性能低下を防止する
ことができる。また該心線が断線して浸水検知が困難又
は不能になる危険性を少なくすることができる。As described above, according to the first aspect of the present invention.
According to the optical cable closure described above, the water immersion sensor that detects water entering the closure case is fixed by the locking fixing portion provided in the lower part of the tray body of the water immersion detection optical fiber storage tray. The water immersion sensor does not move easily inside the water immersion optical fiber storage tray. For this reason, the flood detection optical fiber core will not interfere with the flood sensor, and it is not necessary to make the empty space in the flood detection fiber core storage tray excessively narrow to prevent movement of the flood sensor. The extra length of the detection optical fiber can be easily routed in the tray, the optical fiber is not bent below the guaranteed radius, and the optical loss of the optical fiber is reduced. Therefore, it is possible to prevent the malfunction and performance deterioration of the water immersion sensor. Further, it is possible to reduce the risk that the core wire is broken and the detection of water infiltration becomes difficult or impossible.
【００４７】請求項２及び４記載の光ケーブル用クロー
ジャによれば、浸水センサを固定する係止固定部が、浸
水検知光心線収納トレイのトレイ本体の下部側壁に形成
された浸水センサの作動部を係止する穴部を有し、該穴
部に浸水センサの作動部を嵌め込んで、浸水センサを係
止するようにしたので、該クロージャの取付け状態が種
々変更されても、使用中に地震その他の振動が作用され
ても、浸水センサの移動を確実に防止することが可能
で、長期間安定した浸水検知機能を保持することができ
る。According to the optical cable closure of the second and fourth aspects, the locking fixing part for fixing the water immersion sensor is formed on the lower side wall of the tray body of the water immersion detecting optical fiber storage tray. Since there is a hole for locking the water immersion sensor and the working part of the water immersion sensor is fitted into the hole to lock the water immersion sensor, even if the mounting state of the closure is changed, Even if an earthquake or other vibration is applied, it is possible to reliably prevent movement of the water immersion sensor, and it is possible to maintain a stable water immersion detection function for a long period of time.
【００４８】請求項３記載の光ケーブル用クロージャに
よれば、浸水センサを固定する係止固定部が、略Ωの固
定具本体を有する浸水センサ固定具で構成されているの
で、浸水センサを確実に固定することができるほか、浸
水センサの取付け、取外しが容易でその保守管理を手軽
に行うことができる。According to the optical cable closure of the third aspect, since the locking fixing portion for fixing the water immersion sensor is constituted by the water immersion sensor fixing tool having the fixing tool body of approximately Ω, the water immersion sensor can be securely mounted. In addition to being fixed, the water immersion sensor can be easily attached and detached for easy maintenance.
【００４９】請求項５記載の光ケーブル用クロージャに
よれば、浸水検知光心線収納トレイのトレイ本体に固定
される浸水センサの上部近傍に浸水検知光心線ガイドが
設けられているので、浸水検知光心線の余長部分を浸水
検知光心線収納トレイ内に取り回す際、或いは該収納ト
レイ内に収納した後、該光心線が浸水センサ内にもぐり
込んで浸水センサに引っ掛かることがなくなる。よっ
て、浸水センサと干渉を起こすことがなくなり、該光心
線の光損失及び断線の危険性がより減少し、浸水センサ
の浸水検知の信頼性を高めることができる。According to the optical cable closure of the fifth aspect, since the water immersion detection optical fiber core guide is provided near the upper part of the water immersion sensor fixed to the tray body of the water immersion optical fiber core storage tray, the water immersion detection is performed. When the extra length portion of the optical fiber is routed in the water immersion detection optical fiber storage tray or after being stored in the storage tray, the optical fiber does not get caught in the water immersion sensor and get caught in the water immersion sensor. Therefore, interference with the water immersion sensor is prevented, the risk of optical loss and disconnection of the optical core wire is further reduced, and the reliability of water immersion detection by the water immersion sensor can be improved.
【図１】本発明の光ケーブル用クロージャの一実施形態
を示す図で、（イ）は左半部断面平面図、（ロ）は左半
部断面正面図、（ハ）は側面図である。FIG. 1 is a diagram showing an embodiment of an optical cable closure of the present invention, in which (A) is a left half sectional plan view, (B) is a left half sectional front view, and (C) is a side view.
【図２】図１（ロ）のＡ−Ａ矢視拡大横断面図である。FIG. 2 is an enlarged transverse sectional view taken along the line AA of FIG.
【図３】図１、２に示す光心線収納トレイにおいて、非
浸水検知光心線収納トレイを開いた状態を示す図で、
（イ）は平面図、（ロ）は正面図、（ハ）は底面図、
（ニ）は右側面図である。FIG. 3 is a diagram showing a state in which the non-water-immersion detecting optical fiber line storage tray is opened in the optical fiber line storage trays shown in FIGS.
(A) is a plan view, (b) is a front view, (c) is a bottom view,
(D) is a right side view.
【図４】図１、２に示す光心線収納トレイにおいて、蓋
体を開いた浸水検知光心線収納トレイに浸水センサを係
止固定した状態を示す図で、（イ）は平面図、（ロ）は
正面図、（ハ）は底面図、（ニ）は右側面図である。FIG. 4 is a diagram showing a state in which the water immersion sensor is locked and fixed to the optical fiber detection tray with the lid opened in the optical fiber storage tray shown in FIGS. (B) is a front view, (C) is a bottom view, and (D) is a right side view.
【図５】図１、２に示す浸水検知光心線収納トレイにお
いて、トレイ本体内に浸水センサを取り付ける状態を示
す分解斜視図であるFIG. 5 is an exploded perspective view showing a state in which a water immersion sensor is installed in the tray body in the water immersion detection optical fiber core storage tray shown in FIGS.
【図６】図４のＣ部（浸水センサの係止固定部）を拡大
して示す図で、（イ）は正面図、（ロ）は（イ）のＢ−
Ｂ線矢視図である。FIG. 6 is an enlarged view of a C portion (locking and fixing portion of the water immersion sensor) of FIG. 4, where (A) is a front view and (B) is B- of (A).
It is a line B arrow line view.
【図７】図４に示すものとは異なる浸水検知光心線収納
トレイにおいて、蓋体を開いた状態を示す図で、（イ）
は正面図、（ロ）は底面図、（ハ）は右側面図である。FIG. 7 is a diagram showing a state in which a lid is opened in a water immersion detection optical fiber core storage tray different from that shown in FIG.
Is a front view, (b) is a bottom view, and (c) is a right side view.
【図８】図７に示す収納トレイのトレイ本体に浸水セン
サを取り付ける状態を示す分解斜視図である。8 is an exploded perspective view showing a state in which a water immersion sensor is attached to the tray body of the storage tray shown in FIG.
【図９】図７に示す収納トレイのトレイ本体に浸水セン
サが取り付けられた状態を示す正面図である。9 is a front view showing a state in which a water immersion sensor is attached to the tray body of the storage tray shown in FIG. 7.
【図１０】図７に示す収納トレイ等をトレイ収納受け枠
に配設する状態を示す図である。10 is a diagram showing a state in which the storage trays shown in FIG. 7 are arranged in a tray storage receiving frame.
【図１１】図７に示す収納トレイ等をクロージャケース
内に配設した状態を示す図である。11 is a diagram showing a state in which the storage tray shown in FIG. 7 and the like are arranged in a closure case.
【図１２】図４、７に示すものとは異なる浸水検知光心
線収納トレイにおいて、蓋体を開いた光心線収納トレイ
のトレイ本体に浸水センサを係止固定した状態を示す図
で、（イ）は正面図、（ロ）は底面図、（ハ）は右側面
図である。FIG. 12 is a view showing a state in which a water immersion sensor is locked and fixed to the tray body of the optical fiber core storage tray with the lid opened, in a water immersion optical fiber core storage tray different from that shown in FIGS. (A) is a front view, (B) is a bottom view, and (C) is a right side view.
【図１３】図１２に示す収納トレイのトレイ本体に浸水
センサを取り付ける状態を示す分解斜視図である。13 is an exploded perspective view showing a state in which a water immersion sensor is attached to the tray body of the storage tray shown in FIG.
【図１４】図１２のＤ−Ｄ線矢視断面図である。14 is a cross-sectional view taken along the line DD of FIG.
【図１５】図１２に示す係止固定部の一部を構成する押
えシートであって、（イ）はトレイ本体内の左側に挿着
される押えシートの正面図、（ロ）は右側に挿着される
押えシートの正面図である。FIG. 15 is a presser sheet forming a part of the locking and fixing portion shown in FIG. 12, where (a) is a front view of the presser sheet to be inserted and attached on the left side in the tray body, and (b) is on the right side. It is a front view of the presser sheet inserted and attached.
【図１６】従来の光ケーブル用クロージャの概要を示す
図で、（イ）は半部断面平面図、（ロ）は一部断面正面
図、（ハ）は側面図である。FIG. 16 is a diagram showing an outline of a conventional optical cable closure, in which (a) is a half sectional plan view, (b) is a partial sectional front view, and (c) is a side view.
１０ 光ケーブル用クロージャ
１２ クロージャケース
１４ 光ケーブル用固定具
１６ 光ケーブル用テンションメン
バ固定具
１８ 光ケーブル
２０ 浸水検知光心線
２２ 非浸水検知光心線
２４ 光心線収納トレイ
２６、５８、７６ 浸水検知光心線収納トレイ
２８、７４ 非浸水検知光心線収納トレイ
３０ 連結棒
３２、７２ トレイ収納受け枠
３４、６０、７８ トレイ本体
３４ａ、６０ａ、７８ａ 下部側壁
３４ｂ、７８ｂ 穴部
３４ｃ，７８ｃ 底壁
３４ｄ 水侵入用穴
３６ ヒンジ
３８、６２、８０ 蓋体
４０ 光心線出入口
４２、６８、８２ 取り回し胴
４３ 押え具
４４ 余長部分押え爪
４６、７０、８８ 押えシート
４８ 浸水センサ
４８ａ 反応部
４８ｂ 作動部
５０、６４、８４ 係止固定部
５２ 凹溝部
５４、５５ 係止爪
５６、８６ 浸水検知光心線ガイド
５６ａ 張出アーム
５６ｂ フック部材
６０ｂ 係止穴
６６ 浸水センサ固定具
６６ａ 固定具本体
６６ｂ 両脚部
６６ｃ 係止ピン
６６ｄ 水侵入用凹溝部
６９ 接続部
７０ａ 逃げ溝
８６ａ 棒状ガイド
８２ａ Ｌ型ガイド10 Optical Cable Closure 12 Closure Case 14 Optical Cable Fixing Device 16 Optical Cable Tension Member Fixing Device 18 Optical Cable 20 Water Intrusion Detection Optical Fiber Line 22 Non-Water Intrusion Detection Optical Fiber Line 24 Optical Fiber Wire Storage Tray 26, 58, 76 Water Infiltration Detection Optical Fiber Line Storage trays 28, 74 Non-water immersion detection optical fiber storage tray 30 Connecting rods 32, 72 Tray storage receiving frames 34, 60, 78 Tray bodies 34a, 60a, 78a Lower side walls 34b, 78b Holes 34c, 78c Bottom wall 34d Water intrusion Hole 36 Hinge 38, 62, 80 Lid 40 Optical fiber entrance / exit 42, 68, 82 Manipulating body 43 Holding tool 44 Extra length portion holding claws 46, 70, 88 Holding sheet 48 Water sensor 48a Reaction part 48b Operating part 50, 64, 84 Locking / fixing part 52 Recessed groove parts 54, 55 Locking claws 56, 86 Water immersion detection optical fiber guide 5 6a Overhanging arm 56b Hook member 60b Locking hole 66 Water immersion sensor fixture 66a Fixture body 66b Both legs 66c Locking pin 66d Water entry groove 69 Connection 70a Escape groove 86a Rod-shaped guide 82a L-shaped guide
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 6/00 G02B 6/24 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) G02B 6/00 G02B 6/24
Claims (5)
用固定具がそれぞれ設けられ、前記光ケーブル用固定具
間に光ケーブル用テンションメンバ固定具と、浸水検知
光心線の余長部分を収納する浸水検知光心線収納トレイ
及び非浸水検知光心線の余長部分を収納する非浸水検知
光心線収納トレイからなる光心線収納トレイとが設けら
れ、前記浸水検知光心線収納トレイ内に浸水センサが収
納されている光ケーブル用クロージャにおいて、前記浸
水検知光心線収納トレイは、浸水検知光心線の余長部分
を収納するトレイ本体と蓋体とを備え、該トレイ本体内
の下部に浸水センサを固定する係止固定部が設けられて
いることを特徴とする光ケーブル用クロージャ。1. An inundation detection light for accommodating an optical cable fixture at both ends in a closure case, and storing an optical cable tension member fixture and an extra length of the inundation detection optical fiber between the optical cable fixtures. The optical fiber storage tray and the optical fiber storage tray, which is a non-water-immersion detection optical fiber storage tray that stores the extra length of the optical fiber optical fiber, is provided in the optical fiber storage tray. In the optical cable closure in which the water immersion detection optical fiber core storage tray is provided with a tray main body for accommodating the extra length portion of the water immersion detection optical fiber core and a lid, and a water immersion sensor is provided in the lower portion of the tray main body. An optical cable closure characterized by being provided with a locking fixing portion for fixing the optical fiber.
レイのトレイ本体が前記クロージャケース内に設けられ
る際に下側となる底壁にこれより下方へ突出するように
形成された、浸水センサの吸水性樹脂物または、吸水発
熱物からなる反応部を係止する凹溝部と、トレイ本体の
前記底壁に略直交する側壁の下部に形成された、浸水セ
ンサの前記反応部の反応を浸水検知光心線に加える作動
部を係止する穴部と、前記トレイ本体の前記側壁の下部
及び凹溝部に形成された、前記浸水センサを押える係止
爪とにより構成されることを特徴とする請求項１記載の
光ケーブル用クロージャ。2. A tray main body of a water immersion detection optical fiber wire storage tray is provided in the closure case in the locking and fixing portion.
So that the bottom wall, which is the lower side when
The formed water-absorbent resin material of the water sensor or the water-absorbent resin
The concave groove part that locks the reaction part made of heat and the tray body
The bottom wall is formed in the lower portion of the side wall substantially orthogonal, and the hole for locking the actuating unit to add a reaction of the reaction portion of the immersion sensor for detecting water contact optical center line, the lower portion of the side wall of the tray body < The optical cable closure according to claim 1, further comprising: a locking claw formed in the groove and a recess for pressing the water immersion sensor.
レイのトレイ本体の前記側壁の前記クロージャケース内
に設けられる際に下側となる下部に浸水センサの前記反
応部外面を取り囲んで押える固定部本体と前記固定部本
体から前記トレイ本体の側壁に伸びる両脚部を有する浸
水センサ固定具と、前記両脚に形成された係止ピンと、
前記側壁に形成され、前記係止ピンが係入される係止穴
を有する請求項１記載の光ケーブル用クロージャ。Wherein the locking fixing portion, in said closure casing of the side wall of detecting water light cord storage tray of the tray body
The fixed part present and the fixed body for pressing surrounding the anti <br/>応部outer surface of the immersion sensor into the bottom of the lower side when provided in
A dip with both legs extending from the body to the side wall of the tray body.
A water sensor fixture and locking pins formed on both legs,
Locking hole formed in the side wall and into which the locking pin is inserted
Optical cable closure of claim 1 having a.
レイのトレイ本体の前記側壁の前記クロージャケース内
に設けられる際に下側となる下部に形成された、浸水セ
ンサの前記作動部を係止する穴部と、浸水センサの両側
部と前記クロージャケース内に設けられる際の前記浸水
センサの上部近傍に前記の側壁の下部から突出するよう
に設けられた浸水検知光心線ガイドと、前記トレイ本体
内に収納された浸水検知光心線の余長部分及び該トレイ
本体の内周縁に内側へ突設された複数の余長部分押え爪
の間に挿入介在される押えシートとにより構成されるこ
とを特徴とする請求項１記載の光ケーブル用クロージ
ャ。4. The operation of a water immersion sensor, wherein the locking and fixing portion is formed on a lower side of the side wall of the tray main body of the water immersion detection optical fiber wire storage tray which is a lower side when provided in the closure case. Water hole detection optical fiber core guide provided so as to project from the lower part of the side wall in the vicinity of the upper part of the water immersion sensor when it is provided in both sides of the water immersion sensor and the closure case And a holding sheet inserted between the extra length portion of the water immersion detection optical fiber housed in the tray body and a plurality of extra length portion holding claws protruding inward at the inner peripheral edge of the tray body. The optical cable closure according to claim 1, wherein the closure is for an optical cable.
前記側壁の下部に固定される前記クロージャケース内に
設けられる際の前記浸水センサの上部近傍にトレイ本体
の下部側壁から突出させて浸水検知光心線ガイドを設け
たことを特徴とする請求項２記載の光ケーブル用クロー
ジャ。5. A tray main body of a water immersion detection optical fiber storage tray
In the closure case fixed to the bottom of the side wall
3. The optical cable closure according to claim 2 , wherein a water immersion detection optical fiber guide is provided near the upper portion of the water immersion sensor when the water immersion sensor is provided so as to protrude from the lower side wall of the tray body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000204195A JP3529333B2 (en) | 2000-07-05 | 2000-07-05 | Optical cable closure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000204195A JP3529333B2 (en) | 2000-07-05 | 2000-07-05 | Optical cable closure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002022973A JP2002022973A (en) | 2002-01-23 |
| JP3529333B2 true JP3529333B2 (en) | 2004-05-24 |
Family
ID=18701498
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000204195A Expired - Fee Related JP3529333B2 (en) | 2000-07-05 | 2000-07-05 | Optical cable closure |
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|---|---|
| JP (1) | JP3529333B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5186293B2 (en) * | 2008-06-26 | 2013-04-17 | 株式会社フジクラ | Inundation sensor and detection device |
| JP2015121723A (en) * | 2013-12-25 | 2015-07-02 | 日本アンテナ株式会社 | Optical terminal device |
| JP2015121725A (en) * | 2013-12-25 | 2015-07-02 | 日本アンテナ株式会社 | Optical terminal device |
| JP2015121721A (en) * | 2013-12-25 | 2015-07-02 | 日本アンテナ株式会社 | Optical terminal device |
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2000
- 2000-07-05 JP JP2000204195A patent/JP3529333B2/en not_active Expired - Fee Related
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| JP2002022973A (en) | 2002-01-23 |
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