JPH09318821A - Storage case for optical fiber connection part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage case for optical fiber connection part which compactly stores the welding connection part of an MT connector or an optical fiber tape and more facilitates connection switching or a branch connection work. SOLUTION: A box-shaped main body 11 having the upper face opened is provided, and plural notched parts 13 to which optical fiber tapes L in both ends of a connection part C are inserted at the time of storing the connection part C in the main body 11, are formed in side face parts 11b facing each other of the main body 11 from upper edges of side face parts 11b to bottom face parts 11a. A clamper 12 which can be opened and closed to the main body 11 from the upper face side and are abutted on the upper edges of side face parts 11b from above to hold optical fiber tapes L inserted to notched parts 13 in the closed state is provided on a side face part 11c adjacent to side face parts 11b where notched parts 13 are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage case for an optical fiber connection section.

[0002]

2. Description of the Related Art A closure for accommodating a connecting portion of an optical fiber tape is arranged at a connecting portion of an optical fiber cable used as a communication cable. Inside this closure, connect the optical fiber tapes drawn from the trunk optical fiber cable, or connect the optical fiber tape drawn from the trunk optical fiber cable and the optical fiber tape drawn from the branch optical fiber cable. The MT connector and the fusion splicing section are accommodated, and a sheet type extra length accommodation section for accommodating and protecting the extra length portion of the connected optical fiber tape is provided.

By the way, in the conventional closure, in order to store the extra length portion of the optical fiber tape inside the extra length storing portion, when the connection is changed or the branch connection work is performed, the extra length portion is first routed. Otherwise, connection change and branch connection work cannot be performed, resulting in poor workability.

Therefore, a structure for simplifying the storage form of the extra length portion in the closure and integrating the connecting portions has been studied. The storage form of the extra length portion in this structure is such that when connecting the optical fiber tapes L drawn from the optical fiber cables K held on both sides of the closure 1 as shown in FIG. The part Y is designed to be a half turn storage, and when viewed from above, the optical fiber tape L is stored so as to draw an S shape including the connection part C,
This makes both high-density storage and connection workability compatible.

[0005]

With the spread of communication networks using optical fiber cables, the density and the number of fibers of optical fiber cables have been increasing. However, the capacity of conventional closures having an extra length storage structure is large. It is apt to be insufficient, and problems such as poor fit of optical fiber cables and difficulty in work associated with connection and branching occur.

The present invention has been made in view of the above circumstances, and it is possible to compactly accommodate a fusion splicing portion of an MT connector or an optical fiber tape, and moreover, it is possible to easily perform a connection change or a branch connection work. It is an object of the present invention to provide a storage case for an optical fiber connecting portion that can be used.

[0007]

A storage case for an optical fiber connecting portion of the present invention is a storage case for storing a plurality of connecting portions for connecting optical fiber tapes, and has a box-shaped main body having an open top surface, A plurality of optical fiber tapes on opposite ends of the main body are inserted into the main body from the upper edge to the bottom face of the side surface when the connection portions are accommodated in the main body with a space therebetween. A notch is formed, and a side part adjacent to the side part where the notch is formed is arranged so that it can be opened and closed with respect to the main body from the upper surface side, and when it is in the closed state, it abuts the upper edge of the side part from above. A clamper for holding the optical fiber tape inserted in the cut portion is provided.

In the case for storing the optical fiber connecting portion of the present invention, the connecting portions of the optical fiber tapes such as the MT connector and the fusion splicing portion of the optical fiber tapes are accommodated in the main body and the optical fibers at both ends of the connecting portion are accommodated. Insert the tape into the notches formed on both sides. Then, the clamper is closed to hold the optical fiber tape in the cut portion. The connection parts housed in the main body are arranged in parallel with a space between each other.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a storage tray for an optical fiber connecting portion according to the present invention will be described in detail with reference to FIGS. Sub tray (storage case) 10 shown in FIG.
Is for accommodating a plurality of connecting portions C of the optical fiber tapes L, such as MT connectors attached to both ends of the optical fiber tapes, fusion splicing portions of the optical fiber tapes, etc. 11 and this body 11
And a clamper 12 formed integrally with the.

The bottom plate portion 11a of the main body 11 has a rectangular shape, and a side wall portion is erected upward from each side portion of the bottom plate portion 11a to have a box-like shape with an open upper surface. Among these side wall portions, the side wall portions 11b and 11b which are erected on the short sides of the rectangular bottom plate portion 11a have bottom surface portions 11 from the upper edge side.
A plurality of notches 13 (five in the present embodiment) are formed over a.

The notches 13 are formed at equal intervals along the lengthwise direction of the side wall 11b, and the notch start ends 13a on the upper edge side are rounded at opposite corners.

Further, one of the side wall portions 11c and 11c provided upright on the long side of the rectangular bottom plate portion 11a is provided with a clamper 12, close to the side wall portions 11b and 11b in which the notch 13 is formed. 12 are provided respectively.

The clamper 12 has a strip shape whose length is substantially equal to the width direction of the main body 11, that is, the length of the short side of the bottom plate portion 11a. A flexible thin plate portion 12a integrally formed with the main body 11 and the clamper 12 is formed at the base end portion of the clamp 12, and the thin plate portion 12a is bent to move the clamper 12 from the upper surface side of the main body 11 to the main body 11. The clamp surface 12b of the clamper 12 abuts the upper edge of the side wall portion 11b to close each cut portion 13 from the upper edge side when the closed state is achieved.

Further, the pressing surface 12b facing the notch 13 has each notch 13 when closed.
A plurality of small grooves 12c (five in the present embodiment) for holding the optical fiber tape L are formed in conformity with.

Moreover, the tip of the clamper 12 has a side wall portion 11c facing the clamper 12 when the clamper 12 is closed.
Protrusion 1 that keeps the clamper 12 closed by pressure contact with the inner surface of the
2d is formed.

Sub-tray 10 constructed as described above
Next, a procedure for housing the MT connector C in which the optical fiber tapes L are connected to each other will be described.

First, the MT with the connecting clip Ca attached.
The connector C is arranged in the main body 11 of the sub-tray 10, and the optical fiber tapes L extending from both ends of the MT connector C are inserted into the cut portions 13, respectively. In addition, the optical fiber tape L is inserted only between the cut portions 13 which are positioned to face each other in the length direction of the main body 11. Then, the clamper 12 is closed and the optical fiber tape L is held in the slit formed by the cut portion 13 and the small groove 12c. The width of the slit is substantially equal to the width of the optical fiber tape L, and the clamper 12 is closed to securely hold the optical fiber tape L. It should be noted that the sub-tray 10 can accommodate up to five MT connectors C connected by repeating the same operation, and the MT connectors C are arranged at intervals so as not to contact each other. .

Sub tray 10 accommodating the MT connector C
2 are aligned and arranged on the sub-tray storage tray T provided in the closure 1, as shown in FIG. At this time, it goes without saying that the optical fiber tapes L on both sides of the sub-tray 10 are detoured around the sub-tray storage tray T to form a half-turn storage configuration. Further, a plurality of sub-tray storage trays T are stacked in the closure 1 and arranged so that they can be pulled out, and the extra length portions of the MT connector C and the optical fiber tape L are stored at high density.

By using the sub-tray 10 as described above, a plurality of MT connectors C to which the optical fiber tapes L are connected can be collectively managed. further,
By arranging the sub-tray 10 in alignment with the sub-tray storage tray T provided in the closure 1, the optical fiber tape L is stored in the closure 1 at a high density while the MT connector C at the connection point is planar. The optical fiber tapes L can be easily identified during the connection replacement work. Moreover, by separately managing the optical fiber tape L for each sub-tray 10, there is no adverse effect on the communication of the optical fiber tape L other than the optical fiber tape L on which the work is performed, so that the communication of the optical fiber cable itself is temporarily performed. You can work without stopping.

Further, the sub-tray 10 is provided with a clamper which can be opened and closed, and the MT connector C can be easily held by closing the clamper, and the MT connector C can be easily taken out even when the connection is changed. . Moreover, since the MT connectors C to which the connection clips Ca are attached are accommodated in the sub-tray 10 with a space therebetween and do not contact each other, the MT connectors C collide with each other and the line is momentarily disconnected. Does not happen.

When the fusion splicing portion between the optical fiber tapes L is housed in the sub-tray 10, the reinforcing unit provided at the fusion splicing portion is provided between the pressing surface 12b of the clamper 12 and the bottom surface portion 11a of the main body 11. The optical fiber tape L and the fusion spliced portion are securely held in the sub-tray 10.

In the sub-tray 10, the optical fiber tape L is held between the small groove 12c formed on the pressing surface 12b and the cut portion 13, but the small groove 12c is not provided and the cut portion 13 is made shallow. The optical fiber tape L may be held between the surface 12b and the cut portion 13.

[0023]

According to the storage case of the optical fiber connecting portion of the present invention, a plurality of connecting portions of the optical fiber tape can be collectively managed. Furthermore, by arranging this storage case in the closure in an aligned manner, the optical fiber tapes can be stored in the closure at a higher density while the connection parts are arranged in a plane, and each optical fiber can be replaced during connection replacement work. The fiber tape can be easily identified. Moreover, by separately managing the optical fiber tapes for each storage case, there is no adverse effect on the communication of the optical fiber tapes other than the optical fiber tapes used for the work, so the communication of the optical fiber cable itself is temporarily stopped. You can work without it.

Further, the storage case is provided with a clamper that can be opened and closed, and the connection portion can be easily held by closing the clamper, and the connection portion can be easily taken out even when the connection is changed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a storage case for an optical fiber connection section according to the present invention.

FIG. 2 is a state explanatory view when the storage case of the optical fiber connection portion according to the present invention is stored in the closure.

FIG. 3 is a plan view showing a storage form of an extra length portion in the closure.

[Explanation of symbols]

1 ... Closure, 10 ... Sub-tray (storage case), 1
DESCRIPTION OF SYMBOLS 1 ... Main body, 12 ... Clamper, 13 ... Notch part, L ... Optical fiber tape, C ... Connection part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yu Nozawa 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Shinji Nagasawa 3-19-3 Nishishinjuku, Shinjuku-ku, Tokyo No. 2 within Nippon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A storage case (10) for storing a plurality of connection portions (C) between optical fiber tapes (L), the main body (11) having a box-shaped main body (11) having an open top surface. Side faces (11b, 11
In b), from the upper edge of the side surface portion (11b) to the bottom surface portion (11b).
A plurality of notches (a) into which the optical fiber tapes (L) at both ends of the connection part (C) are inserted when the connection parts (C) are accommodated in the main body (11) in parallel at a distance. 13) is formed, and the side surface portion (11c) adjacent to the side surface portion (11b) on which the notch portion (13) is formed has a main body (11) from the upper surface side.
It is arranged so that it can be opened and closed with respect to the cut portion (1) by contacting the upper edge of the side surface portion (11b) from above when closed.
3) A storage case for an optical fiber connecting part, characterized in that a clamper (12) for holding the optical fiber tape (L) inserted in the optical fiber connection part is provided.