JP3771503B2

JP3771503B2 - Optical fiber joint holding member

Info

Publication number: JP3771503B2
Application number: JP2002038058A
Authority: JP
Inventors: 範幸伊佐治
Original assignee: Nitto Kogyo Corp
Current assignee: Nitto Kogyo Corp
Priority date: 2002-02-15
Filing date: 2002-02-15
Publication date: 2006-04-26
Anticipated expiration: 2022-02-15
Also published as: JP2003241004A

Description

【０００１】
【発明の属する技術分野】
本発明は、光接続箱内で融着接続した光ファイバケーブルの光ファイバ接合部を保持する光ファイバ接合部保持部材に関するものである。
【０００２】
【従来の技術】
光ファイバケーブルの接続には、融着接続とコネクタ接続がある。そのうち融着接続にあっては、スリーブ等の補強材で保護した接合部が動くと心線の接続部の根本付近が小曲がりが生じたり、或いは、心線に戻り力、引張力が加わり伝送損失が増加する虞がある。そこで、図１２に示すような保持部材１０１にスリーブ等を保持させている。また、コネクタ接続にあっては光アダプタ１０２を光接続箱１００内に取付枠１０３をもって別に設置していた。
【０００３】
【発明が解決しようとする課題】
ところが、このような従来のものは光接続箱１００内に保持部材１０１と光アダプタ１０２を別に設置するため、部品がその分多くなり、また、設置面積が広くなってこれを設置する光接続箱も大型化する問題があった。
【０００４】
【課題を解決するための手段】
前記の課題を解決するためになされた本発明は、融着接続した光ファイバ接合部を補強する補強スリーブを保持する主保持部の上部に主保持部の両側に立設した枠板材の中央に切込部を形成した第１副保持部を設け、前記第１副保持部に光アダプタを前記主保持部に立ち上げて平行に設けた小径ホルダー部と大径ホルダー部の上端に支持させたうえ枠板材の間に光アダプタの胴部を嵌合するとともに該胴部に張設した固定板部を切込部に係合させて取り付けたものを請求項１に記載の発明とし、この発明において、主保持部の片側に第１副保持部の枠板材の両側に立設した柱体の上部に対向して蝶番取付手段の一方である短軸部を設けたものを請求項２に記載の発明とする。そして、前記請求項２に記載の発明において、第２副保持部に光ファイバ部品保持部材を取り付けたものを請求項３に記載の発明とし、前記請求項３において、光ファイバ部品保持部材が光アダプタ保持部材であるものを請求項４に記載の発明とし、前記請求項３に記載の発明において、光ファイバ部品保持部材がダム・光カプラ保持部材であるものを請求項５に記載の発明とする。
【０００５】
【発明の実施の形態】
次に、本発明の好ましい実施形態を説明する。
１は光接続箱１００のトレー１００ａに取り付けた融着接続した光ファイバ接合部を補強する補強スリーブ１０４を保持する主保持部であり、該主保持部１には単心用の小径ホルダー部１１とテープ心用の大径ホルダー部１２が平行に設けられている。そして、これらの小径ホルダー部１１及び大径ホルダー部１２には光ファイバ接合部を補強した補強スリーブ１０４が保持されている。
【０００６】
２は前記主保持部１の上部に設けた副保持部であり、該副保持部２は主保持部１の両側に立設した枠板材２１ａ，２１ａの中央に切込部２１ｂ、２１ｂを形成したうえ該切込部２１ｂ、２１ｂの端部に外向きの鍔板部２１ｃ、２１ｃを張設してなる第１副保持部２１と、主保持部１の片側に前記枠板材２１ａの両側に立設した柱体２２ａ、２２ａの上部に対向して蝶番取付手段の一方である短軸部２２ｂを設けてなる第２副保持部２２から構成されている。
【０００７】
そして、副保持部２の第１副保持部２１には、光アダプタ３が前記主保持部１に立ち上げて平行に設けた小径ホルダー部１１と大径ホルダー部１２の上端に支持させたうえ、図１、図２及び図３に示すように光アダプタ３が枠板材２１ａ，２１ａの間に胴部３ａを嵌合するとともに該胴部３ａに張設した固定板部３ｂを切込部２１ｂ、２１ｂに係合させたうえ固定板部３ｂを鍔板部２１ｃ、２１ｃにネジ止めや鍔板部２１ｃに凸部２１ｄを設け、固定板部３ｂに凹部３ｃを設け、凸部２１ｄと凹部３ｃを嵌め合わせ等の手段で固定して取り付けられるものである。
【０００８】
また、副保持部２の第２副保持部２２の柱体２２ａ、２２ａの上部に対向して設けてなる蝶番取付手段の一方である短軸部２２ｂには、光アダプタ、多心−単心変換コード（ダム）、光カプラや補強スリーブ等の光ファイバ部品を保持する光ファイバ部品保持部材４の下端一側に設けてなる蝶番取付手段の他方である軸孔部４ａが着脱自在に軸支可能とされて取り付けられている。
【０００９】
すなわち、この光ファイバ部品保持部材４としては、図６〜図８に示す前記主保持部１と副保持部２を設けてなる上段積用光ファイバ接合部保持部材４１を始め、図９に示す光アダプタ３を取り付けるアダプタ保持部材４２、図１０に示すダム・光カプラア保持部材４３、図１１に示す補強スリーブ保持部材４４がある。これら何れの光ファイバ保持部材４は上部に同一或いは他の種類の光ファイバ部品保持部材４を段積できるように、下端一側に設けてなる蝶番取付手段の他方である軸孔部４ａに対応させた蝶番取付手段の一方である短軸部２２ｂすなわち第２副保持部２２を設けてある。
【００１０】
このように構成された光ファイバ接合部保持部材は、図４に示すように光接続箱１００のトレー１００ａに設けた取付爪１００ｂに主保持部１の両側に設けた係止部１ａを係合させて図１及び図５に示すように取り付ける。そして、融着接続した光ファイバ接合部を補強した補強スリーブ１０４を主保持部１で保持する。これにより、光ファイバケーブルに心線の接続部の根本付近が小曲がりが生じたり、或いは、心線に戻り力、引張力が加わり伝送損失が増加する虞はないものである。なお、この場合に主保持部１が単心用の小径ホルダー部１１とテープ心用の大径ホルダー部１２が平行に設けたものであれば夫々に対応した太さの補強スリーブを保持することは勿論である。
【００１１】
また、本発明の特長とするところは、主保持部１の上部に副保持部２を設けたものであるから、該副保持部２に他の光ファイバ部品すなわち光アダプタ３を取り付けできるものである。すなわち、主保持部１の両側に立設した枠板材２１ａ，２１ａの中央に切込部２１ｂ、２１ｂを形成したうえ該切込部２１ｂ、２１ｂの端部に外向きの鍔板部２１ｃ、２１ｃを張設してなる第１副保持部２１には図１〜図５に示すように光アダプタ３が枠板材２１ａ，２１ａの間に胴部３ａを嵌合するとともに該胴部３ａに張設した固定板部３ｂを切込部２１ｂ、２１ｂに係合させたうえ固定板部３ｂを鍔板部２１ｃ、２１ｃにネジ止めや鍔板部２１ｃに凸部２１ｄを設け、固定板部３ｂに凹部３ｃを設け、凸部２１ｄと凹部３ｃを嵌め合わせ等の手段で固定して取り付けることができるので、光アダプタ３を別異の箇所に取付枠をもって取り付ける必要がないので光接続箱が小型かできるうえ部品点数も少なくできるものである。
【００１２】
また、本発明は副保持部２として前記第１副保持部の他に、主保持部１の片側に立設した柱体２２ａ、２２ａの上部に対向して蝶番取付手段の一方である短軸部２２ｂを設けてなる第２副保持部２２を設けたものであるから、該第２副保持部２２に光ファイバ部品保持部材４の下端一側に設けてなる蝶番取付手段の他方である軸孔部４ａが着脱自在に軸支して該光ファイバ部品保持部材４を取り付ければ、該光ファイバ部品保持部材４に対応した光ファイバ部品を取り付けできるものである。
【００１３】
すなわち、光ファイバ部品としての補強スリーブ１０４と光アダプタ３を取り付ける前記主保持部１と副保持部２を構成した上段積光ファイバ接合保持部材４１を取り付ければ図６〜図８に示すように蝶番取付手段２２ｂ、４ａを起点に起伏自在に段積でき、多数の補強スリーブの保持及びコネクタ接続ができるものである。
【００１４】
また、前記上段積用光ファイバ接合保持部材４１に代わりに、図９に示す光アダプタ３を取り付ける光アダプタ保持部材４２、図１０に示す多心−単心変換コード（ダム）や光カプラを保持するダム・光カプラア保持部材４３、図１１に示す補強スリーブ保持部材４４を取り付けることにより、これらが段積されて省スペース化が図られる他にこれらを適宜組み合わせることにより、光ファイバの種々の配線に適応できるものである。さらに、蝶番取付手段２２ｂ、４ａを起点に上段の光ファイバ接合保持部材を起伏自在に段積できるので下段の光ファイバの配線がし易くなる。
【００１５】
【発明の効果】
前記したように、本発明に係る光ファイバ接合部保持部材は、融着接続した光ファイバ接合部を保持する主保持部の上部に副保持部を設けたものであるから、部品点数を少なくすることができるうえ、省スペース化ができ光接続箱を小型化できるものである。
従って、従来の問題点を解決したものであり、業界にもたらす益大なものである。
【図面の簡単な説明】
【図１】本発明の実施形態を示す斜視図である。
【図２】本発明の実施形態を分解して示す斜視図である。
【図３】本発明の実施形態の要部を分解して示す斜視図である。
【図４】本発明の実施形態の要部を分解して示す正面視図である。
【図５】本発明の実施形態の要部を示す正面図である。
【図６】本発明の実施形態の他例の要部を示す正面図である。
【図７】本発明の実施形態の他例の要部を態様を異にして示す正面図である。
【図８】本発明の実施形態の他例の要部を態様を異にして示す正面図である。
【図９】本発明の実施形態に使用する光アダプタ保持部材を示す正面図である。
【図１０】本発明の実施形態に使用するダム・カプラ保持部材を示す正面図である。
【図１１】本発明の実施形態に使用する補強スリーブ保持部材を示す正面図である。
【図１２】従来例を示す斜視図である。
【符号の説明】
１主保持部
２副保持部
21第１副保持部
22第２副保持部
３光アダプタ
４光ファイバ部品保持部材
42光アダプタ保持部材
43ダム・光カプラア保持部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical fiber joint holding member for holding an optical fiber joint of an optical fiber cable fusion-bonded in an optical junction box.
[0002]
[Prior art]
Optical fiber cable connection includes fusion connection and connector connection. For fusion splices, when the joint protected by a reinforcing material such as a sleeve moves, the base wire near the base may be bent slightly, or return force and tensile force are applied to the core wire for transmission. Loss may increase. Therefore, a sleeve or the like is held by a holding member 101 as shown in FIG. For connector connection, the optical adapter 102 is separately installed in the optical connection box 100 with the mounting frame 103.
[0003]
[Problems to be solved by the invention]
However, since such a conventional device separately installs the holding member 101 and the optical adapter 102 in the optical junction box 100, the number of parts is increased by that amount, and the installation area is increased to install the optical junction box. There was also a problem of increasing the size.
[0004]
[Means for Solving the Problems]
The present invention, which has been made to solve the above-mentioned problems, is provided at the center of the frame plate material standing on both sides of the main holding part at the upper part of the main holding part for holding the reinforcing sleeve for reinforcing the spliced optical fiber joint part. A first sub-holding portion in which a cut portion is formed is provided, and an optical adapter is raised to the main holding portion in the first sub-holding portion and supported on the upper ends of the small-diameter holder portion and the large-diameter holder portion provided in parallel. The invention according to claim 1, wherein the body portion of the optical adapter is fitted between the upper frame plate members and the fixing plate portion stretched on the body portion is engaged with the notch portion and attached. 3. A structure in which a short shaft portion which is one of the hinge mounting means is provided on one side of the main holding portion so as to face the upper portion of the column body standing on both sides of the frame plate material of the first sub holding portion. It is set as invention of this. The invention according to claim 2 is the invention according to claim 3 in which the optical fiber component holding member is attached to the second sub-holding portion. the invention described what is adapter holder member to claim 4, in the invention described in claim 3, the invention described what optical fiber component holding members are dumb optical coupler holding member to claim 5 To do.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the present invention will be described.
Reference numeral 1 denotes a main holding portion that holds a reinforcing sleeve 104 that reinforces a spliced optical fiber joint portion attached to the tray 100a of the optical junction box 100. The main holding portion 1 has a small-diameter holder portion 11 for a single core. And a large-diameter holder 12 for the tape core are provided in parallel. The small-diameter holder portion 11 and the large-diameter holder portion 12 hold a reinforcing sleeve 104 that reinforces the optical fiber joint portion.
[0006]
Reference numeral 2 denotes a sub-holding portion provided on the upper portion of the main holding portion 1, and the sub-holding portion 2 forms notches 21b and 21b in the center of frame plate materials 21a and 21a erected on both sides of the main holding portion 1. In addition, a first sub-holding portion 21 formed by extending outward facing plate portions 21c, 21c at the ends of the cut portions 21b, 21b, and one side of the main holding portion 1 on both sides of the frame plate material 21a. It is composed of a second sub-holding portion 22 provided with a short shaft portion 22b which is one of hinge mounting means facing the upper portions of the standing column bodies 22a and 22a.
[0007]
The first sub-holding portion 21 of the sub-holding portion 2 is supported on the upper ends of the small-diameter holder portion 11 and the large-diameter holder portion 12 that the optical adapter 3 stands up to the main holding portion 1 and is provided in parallel. 1, 2 and the optical adapter 3 frame plate 21a as shown in FIG. 3, the notch 21b of the fixing plate portions 3b stretched over the barrel portion 3a while fitting the barrel 3a between 21a , 21b, the fixing plate portion 3b is screwed to the rib plate portions 21c, 21c, the convex portion 21d is provided to the fixing plate portion 21c, the concave portion 3c is provided to the fixing plate portion 3b, and the convex portion 21d and the concave portion 3c are provided. Are fixed and attached by means such as fitting.
[0008]
Further, the short shaft portion 22b, which is one of the hinge mounting means provided facing the upper portions of the column bodies 22a, 22a of the second sub holding portion 22 of the sub holding portion 2, has an optical adapter, a multi-core-single core. A shaft hole portion 4a which is the other of the hinge mounting means provided on one side of the lower end of the optical fiber component holding member 4 for holding optical fiber components such as a conversion cord (dam), an optical coupler and a reinforcing sleeve is detachably supported. It is possible and attached.
[0009]
That is, the optical fiber component holding member 4 includes an upper-stage product optical fiber joint holding member 41 provided with the main holding portion 1 and the sub holding portion 2 shown in FIGS. There are an adapter holding member 42 to which the optical adapter 3 is attached, a dam / optical coupler holding member 43 shown in FIG. 10, and a reinforcing sleeve holding member 44 shown in FIG. Any one of these optical fiber holding members 4 corresponds to the shaft hole portion 4a which is the other of the hinge attaching means provided on one side of the lower end so that the same or other types of optical fiber component holding members 4 can be stacked on the upper portion. A short shaft portion 22b, that is, a second sub-holding portion 22 which is one of the hinge attaching means is provided.
[0010]
As shown in FIG. 4, the optical fiber joint holding member configured as described above engages the locking portions 1 a provided on both sides of the main holding portion 1 with the mounting claws 100 b provided on the tray 100 a of the optical connection box 100. And attach as shown in FIGS. The reinforcing sleeve 104 that reinforces the spliced optical fiber joint is held by the main holding portion 1. As a result, there is no possibility that the optical fiber cable is slightly bent near the base of the connecting portion of the core wire, or a return force or a tensile force is applied to the core wire to increase transmission loss. In this case, if the main holding portion 1 has a single-core small-diameter holder portion 11 and a tape-core large-diameter holder portion 12 provided in parallel, the reinforcing sleeves having corresponding thicknesses are held. Of course.
[0011]
Further, the present invention is characterized in that the auxiliary holding part 2 is provided on the upper part of the main holding part 1, so that another optical fiber component, that is, an optical adapter 3 can be attached to the auxiliary holding part 2. is there. That is, the notch portions 21b and 21b are formed in the center of the frame plate materials 21a and 21a erected on both sides of the main holding portion 1, and the outward facing plate portions 21c and 21c are formed at the ends of the notches 21b and 21b. As shown in FIGS. 1 to 5, the optical adapter 3 fits the barrel portion 3a between the frame plate members 21a and 21a and is stretched on the barrel portion 3a. The fixed plate portion 3b is engaged with the notches 21b and 21b, the fixed plate portion 3b is screwed to the flange plate portions 21c and 21c, and the convex portion 21d is provided to the fixed plate portion 21c, and the fixed plate portion 3b is recessed. 3c is provided, and the convex portion 21d and the concave portion 3c can be fixed and attached by means such as fitting, so there is no need to attach the optical adapter 3 with a mounting frame at a different location, so the optical junction box can be made small. In addition, the number of parts can be reduced.
[0012]
In addition to the first sub-holding portion, the present invention has a short shaft that is one of the hinge mounting means facing the upper portions of the column bodies 22a and 22a erected on one side of the main holding portion 1 in addition to the first sub-holding portion. Since the second sub-holding portion 22 provided with the portion 22b is provided, the shaft which is the other of the hinge mounting means provided on the second sub-holding portion 22 on one side of the lower end of the optical fiber component holding member 4 If the optical fiber component holding member 4 is attached with the hole 4a being detachably supported, the optical fiber component corresponding to the optical fiber component holding member 4 can be attached.
[0013]
That is, when the upper-stage product optical fiber joint holding member 41 constituting the main holding portion 1 and the sub holding portion 2 to which the reinforcing sleeve 104 and the optical adapter 3 as optical fiber parts are attached is attached, as shown in FIGS. The mounting means 22b and 4a can be raised and lowered from the starting point so that a large number of reinforcing sleeves can be held and connectors can be connected.
[0014]
Further, in place of the upper-stage product optical fiber joint holding member 41, an optical adapter holding member 42 to which the optical adapter 3 shown in FIG. 9 is attached, a multi-core-single-core conversion cord (dam) and an optical coupler shown in FIG. 10 are held. By attaching the dam / optical coupler holding member 43 and the reinforcing sleeve holding member 44 shown in FIG. 11, they can be stacked to save space, and various combinations of optical fibers can be realized by appropriately combining them. It can be adapted to. Furthermore, since the upper optical fiber joint holding member can be undulated and stacked with the hinge attachment means 22b and 4a as starting points, the lower optical fiber can be easily wired.
[0015]
【The invention's effect】
As described above, since the optical fiber joint holding member according to the present invention is provided with the sub-holding part on the upper part of the main holding part for holding the spliced optical fiber joint, the number of parts is reduced. In addition, the space can be saved and the optical junction box can be downsized.
Therefore, it is a solution to the conventional problems and is a great benefit for the industry.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing an embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a main part of the embodiment of the present invention.
FIG. 4 is an exploded front view showing a main part of the embodiment of the present invention.
FIG. 5 is a front view showing a main part of the embodiment of the present invention.
FIG. 6 is a front view showing a main part of another example of the embodiment of the present invention.
FIG. 7 is a front view showing a main part of another example of the embodiment of the present invention in a different manner.
FIG. 8 is a front view showing a main part of another example of the embodiment of the present invention in a different manner.
FIG. 9 is a front view showing an optical adapter holding member used in the embodiment of the present invention.
FIG. 10 is a front view showing a dam coupler holding member used in the embodiment of the present invention.
FIG. 11 is a front view showing a reinforcing sleeve holding member used in the embodiment of the present invention.
FIG. 12 is a perspective view showing a conventional example.
[Explanation of symbols]
1 Main holding part 2 Sub holding part
21 1st sub holding part
22 2nd sub holding part 3 Optical adapter 4 Optical fiber component holding member
42 Optical adapter holding member
43 dam optical coupler holder

Claims

A first sub-holding portion in which a cut portion is formed in the center of a frame plate material standing on both sides of the main holding portion on the upper side of the main holding portion that holds the reinforcing sleeve that reinforces the spliced optical fiber joint portion; The optical adapter is raised on the first sub-holding part and supported on the upper end of the small-diameter holder part and the large-diameter holder part provided in parallel to the main holding part, and the body part of the optical adapter is fitted between the frame plate material In addition , an optical fiber joint holding member characterized in that a fixing plate portion stretched on the body portion is engaged with the cut portion and attached .

A second sub-holding portion is provided on one side of the main holding portion. The second sub-holding portion is provided with a short shaft portion that is one of the hinge mounting means facing the upper portion of the column body standing on both sides of the frame plate material of the first sub-holding portion . The optical fiber joint holding member according to claim 1.

The optical fiber joint holding member according to claim 2, wherein an optical fiber component holding member is attached to the second sub holding portion.

The optical fiber joint holding member according to claim 3, wherein the optical fiber component holding member is an optical adapter holding member.

The optical fiber joint holding member according to claim 3, wherein the optical fiber component holding member is a dam / optical coupler holding member.