JP3796726B2

JP3796726B2 - Optical fiber fusion splice storage case

Info

Publication number: JP3796726B2
Application number: JP34789697A
Authority: JP
Inventors: 武利畑中; 幸彦西; 裕之江本
Original assignee: Shoden Corp
Current assignee: Shoden Corp
Priority date: 1997-12-17
Filing date: 1997-12-17
Publication date: 2006-07-12
Anticipated expiration: 2017-12-17
Also published as: JPH11174238A

Description

【０００１】
【発明の属する技術分野】
本発明は、光ファイバケーブル用成端箱等に用いられて、光ファイバケーブル、光ファイバコードの心線を融着接続して補強スリーブにより被覆した部分およびその余長部を収納するケースに関する。
【０００２】
【従来の技術】
従来、光通信システムに用いられるている光ファイバケーブル、光ファイバコードの心線を接続する場合は、一般には、両方の心線の端部を突き合わせて融着した後、その周囲を補強スリーブにより被覆していた。この接続に際しては、両方の心線に一定長さの余長部を設けているため、接続部である補強スリーブおよび心線の余長部を、まとめて収納・保持しておく必要がある。特に多数の心線が納められる光ファイバケーブル用成端箱では、その接続部および余長部を限られた空間内に効率よくしかも保守点検が容易なように収納しておく必要があった。
【０００３】
そのため従来は、図８および図９に示すように、成端箱内に抜き差し自在に保持されたカード型の収納ケースに、心線の接続部とその余長部を収納していた。この収納ケースは、本体31と本体31に開閉自在に軸支された蓋32からなり、本体31の一端が自在継ぎ手34により、成端箱内の保持部33に係合されている。
本体31は、図示の状態から蓋32を閉じ、本体31の長手方向を軸として90度捻ってから、自在継ぎ手34を支点にし、手前側を上方に起こして押し込むことで、成端箱の保持部33に収納される構造となっている。ここでは、ケースのサイズを5×80×130mm程度として薄くしているため、他のケースとともに横並びに収納することで、狭い空間に多数のケースを効率よくしかも出し入れ自在に収納することができる。
【０００４】
次に、このケースに心線を収納する場合の手順を説明する。図７のように、手前に引き出して蓋32をあけた状態のケース本体31の右上部に形成された導入口35へ、融着接続された心線36の余長部となっている部分の両端部を押し込む。次いで、直径が70〜80mmの輪を目安とし、よりが入らないようにしながら、心線36を本体31内に８の字収納をする。心線36のほぼ中間に位置している融着部の補強スリーブは、ケース本体31の内側左右に形成された固定溝37,38の何れか容易な方に圧入して固定する。さらに、心線36の残った部分を曲げ半径30mm以上を確保しながらＳ字収納をする。心線36の収納が終了した状態が図９となり、この状態から、蓋32を閉じ、本体31の長手方向を軸として90度捻ってから、自在継ぎ手34を支点にして手前側を上方に起こして成端箱の保持部33に押し込み、作業を終了する。
【０００５】
【発明が解決しようとする課題】
しかしながら、上述した従来のケースを用いた収納方法では、心線をいためることがないように、よりの入らない８の字収納をするとともに、最小曲げ半径以上を保ちながらＳ字収納をしなければならず、作業者に熟練と細心の注意が要求され、作業効率が良くないという課題があった。
【０００６】
【課題を解決するための手段】
そこで上記課題を解決するために、請求項１の発明は、摺動円板と、この摺動円板の一方の面に摺動円板と同軸に形成される円板状の凸部と、この摺動円板の他方の面にこの摺動円板外径の半分弱の外径からなる２個の円板状突起を眼鏡状に配設した２個の円板と、摺動円板の中心に形成され、円板配設側のみからの挿入が可能な補強スリーブ嵌着用の溝と、溝を中心にして２個の円板の両側に位置するように、２個の円板、摺動円板および凸部を貫通して形成された１対の巻取孔と、を有し、溝両端の延長線が２個の円板の外周巻き付け面に連続するようにして補強スリーブからの光ファイバが心線曲げ最小半径以上の曲率半径で円板に巻き付けられるようにする巻付体と、
巻付体の溝開口側であって２個の円板上に貼着されるとともに外縁が２個の円板の外縁から突出し、かつ中心線部分が切離された押さえシートと、
互いの脱着が可能な蓋とケース本体とから構成され、それら蓋とケース本体との両方の外周部に接線方向の心線導入口が形成されるとともに蓋とケース本体との両方の中心部に透孔が形成され、巻付体の凸部が一方の透孔に嵌め込まれて１対の巻取孔が透孔を通じて手指を挿脱可能な状態で回転自在に収納される収納ケースと、
を備え、
心線導入口の接線と溝両端の延長線とは鈍角をなすように傾斜して心線導入口と溝とが配置されるものであり、光ファイバの設置時には外周部の心線導入口が溝両端の延長線上にあるように巻付体を位置させ、光ファイバが溝の一方の延長線、心線導入口、および心線導入口の接線に沿わせて鈍角をなすように配置され、かつ光ファイバが溝の他方の延長線、円板による巻き付けを経て心線導入口まで緩い曲線をなすように配置されて、最小半径以下の曲率半径で円板に巻き付けされるおそれを低減することを特徴とする。
【０００７】
請求項２の発明は、摺動円板と、この摺動円板の一方の面に摺動円板と同軸に形成される円板状の凸部と、この摺動円板の他方の面に巴形状の突起を二つ巴状に配設した２個の巴形状の突起と、摺動円板の中心に形成され、突起配設側のみからの挿入が可能な補強スリーブ嵌着用の溝と、溝を中心にして２個の巴形状の突起の両側に位置するように、２個の巴形状の突起、摺動円板および凸部を貫通して形成された１対の巻取孔と、を有し、溝両端の延長線が２個の巴形状の突起の外周巻き付け面に連続するようにして補強スリーブからの光ファイバが心線曲げ最小半径以上の曲率半径で巴形状の突起に巻き付けられるようにする巻付体と、
巻付体の溝開口側であって２個の巴形状の突起上に貼着されるとともに外縁が２個の巴形状の突起の外縁から突出し、かつ中心線部分が切離された押さえシートと、
互いの脱着が可能な蓋とケース本体とから構成され、それら蓋とケース本体との両方の外周部に接線方向の心線導入口が形成されるとともに蓋とケース本体との両方の中心部に透孔が形成され、巻付体の凸部が一方の透孔に嵌め込まれて１対の巻取孔が透孔を通じて手指を挿脱可能な状態で回転自在に収納される収納ケースと、
を備え、
心線導入口の接線と溝両端の延長線とは鈍角をなすように傾斜して心線導入口と溝とが配置されるものであり、光ファイバの設置時には外周部の心線導入口が溝両端の延長線上にあるように巻付体を位置させ、光ファイバが溝の一方の延長線、心線導入口、および心線導入口の接線に沿わせて鈍角をなすように配置され、かつ光ファイバが溝の他方の延長線、巴形状の突起による巻き付けを経て心線導入口まで緩い曲線をなすように配置されて、最小半径以下の曲率半径で巴形状の突起に巻き付けされるおそれを低減することを特徴とする。
【０００８】
請求項３の発明は、請求項１および請求項２の発明において、押さえシートに透明または半透明の材質を用いたことを特徴とする。
【０００９】
【発明の実施の形態】
以下、図に沿って本発明の実施形態を説明する。
図１および図２は本発明の実施形態の使用状態を示す斜視図であり、本発明の収納ケースは、両図に示されるように、ケース本体１およびその蓋２と、その内部に収容される巻付体３とからなる。ケース本体１は、図１および図２に示されるように、底浅の有底円筒状をし、その底部の中心に透孔４が形成されるとともに、その円筒部の外周部にほぼ接線方向の導入口５が形成されている。蓋２は、ケース本体１との嵌着が可能なように、ケース本体１とほぼ同一の形状に形成され、同様に、透孔６および導入口７が形成されている。
【００１０】
図３は図１および図２における巻付体３の上面図、図４は図３の右側面図、図５は図３のA-A線断面図、図６は下面図である。これらの図において、８は摺動円板であり、その外側面の中心部に凸部９が形成されている。摺動円板８の外周および凸部９の外周は、ケース本体１および透孔４と嵌合して回転が可能なように、それらの内径よりもわずかに小さく形成されている。さらに、摺動円板８の内側面には、外径を摺動円板８の半径よりも若干小さくした１対の円板11,12が、中心点Oに対して180度の位置に配設されている。
【００１１】
この円板11,12および摺動円板８には、中心点Oを通って、両端がそれぞれ円板11,12の外周に沿うような方向で溝13が形成されている。溝13の幅、深さおよび長さは、心線Ｌの融着接続部を被覆した補強スリーブ10を挿入し保持することが可能な寸法であるとともに、補強スリーブ10が溝13に保持された状態で、そのスリーブ10の両端から引き伸ばされた心線Ｌを、円板11,12の外周にそれぞれ巻き付けたときの心線Ｌの曲げ半径が、その心線Ｌに許容されている最小曲げ半径以上となるように、円板11,12に対して溝13が配設されている。
【００１２】
また、円板11,12の頂部から反対面の凸部９までを貫通して巻き取り孔14,15が形成されており、この巻き取り孔14,15の相互の位置は、溝13および中心点Oに対して対称である。さらに、円板11,12の頂部には、両端が半円形をして円板11,12をともに覆う大きさの透明または半透明の押さえシート16が貼着され、さらに、押さえシート16の中心部に、溝13と交差するように、切れ目17が形成されている。この押さえシート16は、図４に示されるように、その外縁が円板11,12よりも突出しているため、心線Ｌを円板11,12に巻き付ける際にリムとして機能し、心線Ｌが外れることを防止する。また、押さえシート16は透明または半透明であるため、目視による内部の確認が可能である。
【００１３】
また、押さえシート16に形成された切れ目１７の間から、その内部の溝１３に補強スリーブ10を挿入することが可能である。なお、押さえシート16の貼着に際しては、円板11,12を覆う大きさの１枚のシートを貼着した後に、その中心部に切れ目17を形成する方法も可能であるが、別な方法として、予め２枚に分離されているシートを、その中心側端部を互いに突き合わせながら円板11,12に貼着する方法を用いることもできる。また、押さえシート16の巻き取り孔14,15に位置する部分を切除すると、巻き取り孔14,15を、本体１側だけでなく、蓋２の透孔６側からも操作することが可能になる。
【００１４】
次に、これらの構成からなる収納ケースの使用方法について説明する。
先ず、図１に示されるように、蓋２を開いて、ケース本体１から巻付体３を取り出し、押さえシート16の切れ目17の間から、心線Ｌの融着接続部である補強スリーブ10を、溝13に挿入して固定する。次に、巻付体３を、ケース本体１へ戻すとともに、図２に示されるように、補強スリーブ10の両端から延長される２本の心線Ｌを、巻付体３の周囲にＳ字状に配置しながら、ケース本体１の導入口5から外へ引き出し、その状態でケース本体１に蓋２を被せて閉じる。
【００１５】
次に、蓋２が閉じられた状態（図示せず）で、ケース本体１の中心部の透孔４の位置に、巻付体３の巻取孔14,15があらわれるので、この巻取孔14,15を用いて、蓋２側から見て時計方向に巻付体３を回転させる。それにより、補強スリーブ10の両端に接続されている１対の心線Ｌが、Ｓ字状に巻付体３に巻取られる。さらに、巻付体３を回転させていくことで、心線Ｌは、導入口5,7から順に内部に引き込まれて巻取られる。こうして、心線Ｌの余長部がほぼ巻き込まれた状態で、収納ケースごと所定の位置に移動して、作業を終了する。また、このとき、収納ケースを開いて、心線Ｌが巻き付けられている巻付体３だけを取り出して、別の収納専用の容器等に収納することも可能である。
【００１６】
このように、上述した実施形態では、初めに、巻き付けようとする心線Ｌの中心部分に位置している補強スリーブ10を、巻付体３の溝13にＳ字状に挿入して固定・保持させるとともに、心線Ｌを導入口５から外部へ引き出してからケース本体１に収納して蓋２を閉じれば、あとは、巻取孔14,15を用いて巻付体３を回転させるだけで、ケース本体１内に心線Ｌの余長部分が巻き込まれていく。その結果、従来の収納ケースで実施していた８の字収納が不要となり、巻き取り作業が簡単になり、その分、作業能率の大幅な向上が可能になった。
【００１７】
なお、図示例では、補強スリーブ10両端の心線ＬをＳ字状に巻き付けるために、１対の円板11,12を眼鏡状に配設して巻付体３を構成しているが、巻付体を他の形状にすることも可能である。例えば、図７のように溝13を中心に配設し、その両端の心線Ｌの巻き付け部分を、いわゆる二つ巴の形状として、巻付体の外周部分に連続させた形状とすることもできる。
また、図示例では、心線Ｌの挟み込み防止のために、巻付体３の片面を押さえシート16で覆っていたが、挟み込み防止用のリムを円板11,12と一体に形成しておくことで、押さえシート16を不要にすることも可能である。
【００１８】
【発明の効果】
以上述べたように本発明によれば、収納ケースの蓋を開けて巻付体を取り外し、押さえシートの間から補強スリーブ嵌着用の溝に、心線途中の補強スリーブを挿入して固定する。次に、補強スリーブの端部の心線をそれぞれ導入口を通して外部に配置してから、蓋を閉じる。次に、収納ケースを保持した状態で、巻取孔を利用して、巻付体を巻取り方向に回転させることで、心線が順次、導入口から引き込まれて、心線の余長部がケース内に収納される。このようにして、本発明の収納ケースを用いることで、心線に不当な外力やよりが加えられることなく巻き付けが可能となり、作業能率が向上するとともに、作業者には熟練が不要となる。
【図面の簡単な説明】
【図１】本発明の実施形態の使用状態を示す斜視図である。
【図２】本発明の実施形態の使用状態を示す斜視図である。
【図３】図１および図２における巻付体の上面図である。
【図４】図３の右側面図である。
【図５】図３のA-A線断面図である。
【図６】図３の下面図である。
【図７】他の実施形態の巻付体の上面図である。
【図８】従来例を示す図である。
【図９】従来例を示す図である。
【符号の説明】
1 ケース本体
2 蓋
3 巻付体
4 透孔
5 導入口
6 透孔
7 導入口
8 摺動円板
9 凸部
10 補強スリーブ
11,12 円板
13 溝
14,15 巻き取り孔
16 押さえシート
17 切れ目
Ｌ心線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a case that is used for a termination box for an optical fiber cable or the like and that accommodates a portion covered with a reinforcing sleeve by fusion-bonding the cores of an optical fiber cable and an optical fiber cord and an extra length portion thereof.
[0002]
[Prior art]
Conventionally, when connecting the cores of optical fiber cables and optical fiber cords used in optical communication systems, in general, the ends of both cores are butted together and then the periphery of the cores is reinforced by a reinforcing sleeve. It was covered. At the time of this connection, the extra length portions of a certain length are provided in both the core wires, so that it is necessary to store and hold the reinforcing sleeve as the connection portion and the extra length portion of the core wire together. In particular, in an optical fiber cable termination box in which a large number of core wires can be accommodated, it is necessary to store the connecting portion and the extra length portion in a limited space efficiently and easily for maintenance and inspection.
[0003]
Therefore, conventionally, as shown in FIGS. 8 and 9, the connecting portion of the core wire and the extra length portion thereof are stored in a card-type storage case that is detachably held in the termination box. The storage case is composed of a main body 31 and a lid 32 pivotally supported by the main body 31 so that one end of the main body 31 is engaged with a holding portion 33 in the termination box by a universal joint 34.
The main body 31 holds the termination box by closing the lid 32 from the state shown in the figure, twisting it by 90 degrees about the longitudinal direction of the main body 31, and using the universal joint 34 as a fulcrum and raising the near side upward and pushing it in. The part 33 is stored in the structure. Here, since the case size is reduced to about 5 × 80 × 130 mm, a large number of cases can be efficiently stored in a narrow space by being stored side by side with other cases.
[0004]
Next, the procedure for housing the core wire in this case will be described. As shown in FIG. 7, the portion of the extra length portion of the core wire 36 fused and connected to the introduction port 35 formed in the upper right portion of the case main body 31 with the lid 32 opened by being pulled forward. Push in both ends. Next, using a ring with a diameter of 70 to 80 mm as a guideline, the core wire 36 is stored in the main body 31 while preventing the twisting from entering. The reinforcing sleeve of the fused portion located substantially in the middle of the core wire 36 is fixed by being pressed into one of the fixing grooves 37 and 38 formed on the inner left and right sides of the case body 31 in an easy manner. Further, the remaining portion of the core wire 36 is stored in an S shape while ensuring a bending radius of 30 mm or more. FIG. 9 shows the state in which the core wire 36 is completely stored. From this state, the lid 32 is closed, twisted 90 degrees about the longitudinal direction of the main body 31, and then the front side is raised upward with the universal joint 34 as a fulcrum. Then, it is pushed into the holding part 33 of the termination box, and the operation is finished.
[0005]
[Problems to be solved by the invention]
However, in the storage method using the above-described conventional case, in order to avoid damaging the core wire, it is necessary to store the figure 8 which does not enter more and store the S-character while maintaining the minimum bending radius or more. However, there is a problem that the worker is required to be skilled and careful, and work efficiency is not good.
[0006]
[Means for Solving the Problems]
Therefore, in order to solve the above problems, the invention of claim 1 includes a sliding disk, and a disk-shaped convex portion formed coaxially with the sliding disk on one surface of the sliding disk, Two discs in which two disc-shaped projections having an outer diameter less than half the outer diameter of the sliding disc are arranged in the shape of glasses on the other surface of the sliding disc, and the sliding disc A groove for wearing a reinforcing sleeve that can be inserted only from the side of the disk, and two disks so as to be positioned on both sides of the two disks around the groove, A pair of winding holes formed so as to penetrate the sliding disk and the convex portion, and from the reinforcing sleeve so that the extension lines at both ends of the groove are continuous with the outer circumferential winding surfaces of the two disks A wound body that allows the optical fiber to be wound around the disk with a radius of curvature greater than the minimum bending radius of the core wire;
A pressing sheet on the groove opening side of the wound body, which is stuck on two disks and whose outer edge protrudes from the outer edges of the two disks, and whose centerline part is separated;
Consists of a lid and a case main body that can be attached to and detached from each other. A tangential core wire inlet is formed on the outer periphery of both the lid and the case main body, and at the center of both the lid and the case main body. A storage case in which a through hole is formed, a convex portion of the wound body is fitted into one through hole, and a pair of winding holes are rotatably stored in a state in which fingers can be inserted and removed through the through hole;
With
The core wire inlet and the groove are arranged so that the tangent line of the core wire inlet and the extension line at both ends of the groove are inclined to form an obtuse angle. The winding body is positioned so that it is on the extension line at both ends of the groove, and the optical fiber is arranged to form an obtuse angle along the tangent line of one extension line of the groove, the core wire inlet, and the core wire inlet, In addition, the optical fiber is arranged so as to form a gentle curve from the other extension line of the groove and the disk to the core wire inlet, thereby reducing the possibility that the optical fiber is wound around the disk with a radius of curvature less than the minimum radius. It is characterized by.
[0007]
The invention of claim 2 is a sliding disk, a disk-shaped convex portion formed coaxially with the sliding disk on one surface of the sliding disk, and the other surface of the sliding disk. Two hook-shaped protrusions having two hook-shaped protrusions arranged in the shape of a groove, and a groove for fitting a reinforcing sleeve that is formed at the center of the sliding disk and can be inserted only from the protrusion-disposing side And a pair of winding holes formed through the two hook-shaped protrusions, the sliding disk and the convex portion so as to be positioned on both sides of the two hook-shaped protrusions with the groove as a center. The optical fiber from the reinforcing sleeve has a radius of curvature equal to or greater than the minimum radius of bending of the core so that the extension lines at both ends of the groove are continuous with the outer circumferential winding surface of the two flanges. A wound body to be wound around,
A pressing sheet which is attached to two hook-shaped protrusions on the groove opening side of the wound body, has an outer edge protruding from the outer edges of the two hook-shaped protrusions, and has a center line portion separated ,
Consists of a lid and a case main body that can be attached to and detached from each other. A tangential core wire inlet is formed on the outer periphery of both the lid and the case main body, and at the center of both the lid and the case main body. A storage case in which a through hole is formed, a convex portion of the wound body is fitted into one through hole, and a pair of winding holes are rotatably stored in a state in which fingers can be inserted and removed through the through hole;
With
The core wire inlet and the groove are arranged so that the tangent line of the core wire inlet and the extension line at both ends of the groove are inclined to form an obtuse angle. The winding body is positioned so that it is on the extension line at both ends of the groove, and the optical fiber is arranged to form an obtuse angle along the tangent line of one extension line of the groove, the core wire inlet, and the core wire inlet, In addition, the optical fiber is arranged so as to form a gentle curve up to the core wire inlet through the other extension line of the groove, the hook-shaped protrusion, and may be wound around the hook-shaped protrusion with a radius of curvature less than the minimum radius. It is characterized by reducing .
[0008]
The invention of claim 3 is characterized in that, in the invention of claim 1 and claim 2, a transparent or translucent material is used for the pressing sheet.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are perspective views showing a use state of an embodiment of the present invention. As shown in both drawings, the storage case of the present invention is accommodated in a case main body 1 and its lid 2 and inside thereof. And the wound body 3. As shown in FIGS. 1 and 2, the case body 1 has a shallow bottomed cylindrical shape, and a through hole 4 is formed at the center of the bottom portion, and substantially tangential to the outer peripheral portion of the cylindrical portion. The inlet 5 is formed. The lid 2 is formed in substantially the same shape as the case body 1 so that the lid 2 can be fitted to the case body 1, and similarly, a through hole 6 and an introduction port 7 are formed.
[0010]
3 is a top view of the wound body 3 in FIGS. 1 and 2, FIG. 4 is a right side view of FIG. 3, FIG. 5 is a cross-sectional view taken along the line AA of FIG. In these drawings, 8 is a sliding disk, and a convex portion 9 is formed at the center of the outer surface. The outer periphery of the sliding disk 8 and the outer periphery of the convex portion 9 are formed slightly smaller than their inner diameters so that they can be fitted and rotated with the case body 1 and the through holes 4. Further, a pair of discs 11 and 12 whose outer diameter is slightly smaller than the radius of the sliding disc 8 are arranged on the inner surface of the sliding disc 8 at a position of 180 degrees with respect to the center point O. It is installed.
[0011]
Grooves 13 are formed in the discs 11 and 12 and the sliding disc 8 through the center point O in such a direction that both ends thereof are along the outer peripheries of the discs 11 and 12, respectively. The width, depth, and length of the groove 13 are such dimensions that the reinforcing sleeve 10 covering the fusion spliced portion of the core L can be inserted and held, and the reinforcing sleeve 10 is held in the groove 13. In this state, the bending radius of the core wire L when the core wire L stretched from both ends of the sleeve 10 is wound around the outer circumferences of the disks 11 and 12 is the minimum bending radius allowed for the core wire L. As described above, the grooves 13 are provided for the disks 11 and 12.
[0012]
Further, winding holes 14 and 15 are formed so as to penetrate from the top of the disks 11 and 12 to the convex portion 9 on the opposite surface, and the mutual positions of the winding holes 14 and 15 are the groove 13 and the center. Symmetric with respect to point O. Furthermore, a transparent or semi-transparent press sheet 16 having a size that covers both the discs 11 and 12 is attached to the top of the discs 11 and 12, and the center of the press sheet 16 is further attached. A cut 17 is formed in the part so as to intersect the groove 13. As shown in FIG. 4, the outer edge of the pressing sheet 16 protrudes from the disks 11 and 12, so that the pressing sheet 16 functions as a rim when the core L is wound around the disks 11 and 12. Prevents from coming off. Further, since the pressing sheet 16 is transparent or translucent, the inside can be confirmed visually.
[0013]
Further, it is possible to insert the reinforcing sleeve 10 into the groove 13 inside the gap 17 formed in the pressing sheet 16. In addition, when sticking the pressing sheet 16, it is possible to form a cut 17 at the center after sticking a sheet of a size covering the disks 11 and 12, but another method is also possible. As another example, a method in which a sheet that has been separated into two sheets in advance is attached to the disks 11 and 12 while the end portions on the center side are abutted with each other can be used. Further, when the portions located in the winding holes 14 and 15 of the presser sheet 16 are cut, the winding holes 14 and 15 can be operated not only from the main body 1 side but also from the through hole 6 side of the lid 2. Become.
[0014]
Next, the usage method of the storage case which consists of these structures is demonstrated.
First, as shown in FIG. 1, the lid 2 is opened, the wound body 3 is taken out from the case main body 1, and the reinforcing sleeve 10 which is a fusion-bonding portion of the core wire L from between the cuts 17 of the pressing sheet 16. Is inserted into the groove 13 and fixed. Next, the wound body 3 is returned to the case body 1, and as shown in FIG. 2, two core wires L extending from both ends of the reinforcing sleeve 10 are formed in an S shape around the wound body 3. In this state, the case body 1 is pulled out from the introduction port 5, and in that state, the case body 1 is covered with a lid 2 and closed.
[0015]
Next, when the lid 2 is closed (not shown), the winding holes 14 and 15 of the wound body 3 appear at the position of the through hole 4 in the center of the case body 1. 14 and 15 are used to rotate the wound body 3 in the clockwise direction when viewed from the lid 2 side. As a result, the pair of core wires L connected to both ends of the reinforcing sleeve 10 is wound around the wound body 3 in an S shape. Further, by rotating the wound body 3, the core wire L is drawn into the inside sequentially from the introduction ports 5 and 7 and wound. In this way, in a state where the extra length portion of the core L is almost caught, the entire storage case is moved to a predetermined position, and the operation is completed. At this time, it is also possible to open the storage case, take out only the wound body 3 around which the core wire L is wound, and store it in another dedicated container or the like.
[0016]
Thus, in the above-described embodiment, first, the reinforcing sleeve 10 positioned at the center portion of the core L to be wound is inserted into the groove 13 of the wound body 3 in an S shape and fixed. When the core L is pulled out from the introduction port 5 and then stored in the case body 1 and the lid 2 is closed, the winding body 3 is simply rotated using the winding holes 14 and 15. Thus, the extra length portion of the core wire L is wound into the case body 1. As a result, the storage of the figure 8 that has been performed in the conventional storage case is no longer necessary, and the winding operation is simplified, and the work efficiency can be greatly improved.
[0017]
In the illustrated example, in order to wind the core L at both ends of the reinforcing sleeve 10 in an S shape, a pair of discs 11 and 12 are arranged in the shape of glasses to constitute the wound body 3. It is also possible to make the wound body into other shapes. For example, as shown in FIG. 7, the groove 13 may be arranged at the center, and the winding portion of the core wire L at both ends thereof may be formed as a so-called double-hull shape and continuous with the outer peripheral portion of the wound body it can.
Further, in the illustrated example, one side of the wound body 3 is covered with the pressing sheet 16 in order to prevent the cord L from being caught, but a rim for preventing the cord is formed integrally with the disks 11 and 12. Thus, it is possible to eliminate the pressing sheet 16.
[0018]
【The invention's effect】
As described above, according to the present invention, the lid of the storage case is opened to remove the wound body, and the reinforcing sleeve in the middle of the cord is inserted into the groove for fitting the reinforcing sleeve from between the pressing sheets and fixed. Next, the core wire at the end of the reinforcing sleeve is disposed outside through the introduction port, and then the lid is closed. Next, while holding the storage case, the winding wire is rotated in the winding direction using the winding hole, so that the core wire is sequentially drawn from the introduction port, and the extra length portion of the core wire Is stored in the case. In this way, by using the storage case of the present invention, it is possible to wind without applying an undue external force or twist to the core wire, improving work efficiency and making the operator unnecessary.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of an embodiment of the present invention.
FIG. 2 is a perspective view showing a usage state of the embodiment of the present invention.
3 is a top view of the wound body in FIGS. 1 and 2. FIG.
4 is a right side view of FIG. 3. FIG.
5 is a cross-sectional view taken along line AA in FIG.
6 is a bottom view of FIG. 3. FIG.
FIG. 7 is a top view of a wound body according to another embodiment.
FIG. 8 is a diagram showing a conventional example.
FIG. 9 is a diagram showing a conventional example.
[Explanation of symbols]
1 Case body
2 lid
3 Wrap body
4 Through hole
5 Introduction
6 Through hole
7 Introduction
8 Sliding disc
9 Convex
10 Reinforcing sleeve
11,12 disc
13 groove
14,15 Winding hole
16 Presser sheet
17 Cut L Core

Claims

A sliding disc, a disc-shaped convex portion formed coaxially with the sliding disc on one surface of the sliding disc, and an outside of the sliding disc on the other surface of the sliding disc It is formed at the center of two discs with two disc-shaped projections having an outer diameter less than half of the diameter arranged in the shape of glasses and a sliding disc, and insertion from only the disc arrangement side is possible A pair of reinforcing sleeves that can be fitted, and a pair formed through two discs, a sliding disc, and a projection so as to be positioned on both sides of the two discs with the groove as the center The optical fiber from the reinforcing sleeve is a disc with a radius of curvature greater than the minimum radius of bending of the core wire so that the extension lines at both ends of the groove are continuous with the outer circumferential winding surface of the two discs. A wound body to be wound around,
A pressing sheet on the groove opening side of the wound body, which is stuck on two disks and whose outer edge protrudes from the outer edges of the two disks, and whose centerline part is separated;
Consists of a lid and a case main body that can be attached to and detached from each other. A tangential core wire inlet is formed on the outer periphery of both the lid and the case main body, and at the center of both the lid and the case main body. A storage case in which a through hole is formed, a convex portion of the wound body is fitted into one through hole, and a pair of winding holes are rotatably stored in a state in which fingers can be inserted and removed through the through hole;
With
The core wire inlet and the groove are arranged so that the tangent line of the core wire inlet and the extension line at both ends of the groove are inclined to form an obtuse angle. The winding body is positioned so that it is on the extension line at both ends of the groove, and the optical fiber is arranged to form an obtuse angle along the tangent line of one extension line of the groove, the core wire inlet, and the core wire inlet, In addition, the optical fiber is arranged so as to form a gentle curve from the other extension line of the groove and the disk to the core wire inlet, thereby reducing the possibility that the optical fiber is wound around the disk with a radius of curvature less than the minimum radius. An optical fiber fusion splice storage case.

A sliding disk, a disk-shaped convex portion formed coaxially with the sliding disk on one surface of the sliding disk, and two hook-shaped protrusions on the other surface of the sliding disk Two hook-shaped protrusions arranged in a hook shape, a groove formed in the center of the sliding disk, which can be inserted only from the protrusion mounting side, and a groove for wearing the reinforcing sleeve A pair of winding holes formed so as to pass through the two hook-shaped protrusions, the sliding disk, and the convex portion so as to be located on both sides of the two hook-shaped protrusions, and the groove Winding that allows the optical fiber from the reinforcing sleeve to be wound around the hook-shaped protrusion with a radius of curvature equal to or greater than the minimum radius of bending of the core wire so that the extension lines at both ends are continuous with the outer peripheral winding surface of the two hook-shaped protrusions. With appendages,
A pressing sheet which is attached to two hook-shaped protrusions on the groove opening side of the wound body, has an outer edge protruding from the outer edges of the two hook-shaped protrusions, and has a center line portion separated ,
Consists of a lid and a case main body that can be attached to and detached from each other. A tangential core wire inlet is formed on the outer periphery of both the lid and the case main body, and at the center of both the lid and the case main body. A storage case in which a through hole is formed, a convex portion of the wound body is fitted into one through hole, and a pair of winding holes are rotatably stored in a state in which fingers can be inserted and removed through the through hole;
With
The core wire inlet and the groove are arranged so that the tangent line of the core wire inlet and the extension line at both ends of the groove are inclined to form an obtuse angle. The winding body is positioned so that it is on the extension line at both ends of the groove, and the optical fiber is arranged to form an obtuse angle along the tangent line of one extension line of the groove, the core wire inlet, and the core wire inlet, In addition, the optical fiber is arranged so as to form a gentle curve up to the core wire inlet through the other extension line of the groove, the hook-shaped protrusion, and may be wound around the hook-shaped protrusion with a radius of curvature less than the minimum radius. A storage case for an optical fiber fusion splicing part.

In the storage case for the optical fiber fusion splicing part according to claim 1 or 2,
A storage case for an optical fiber fusion splicing part, characterized in that a transparent or translucent material is used for the pressing sheet.