JPH1010334A - Cabinet for storing fiber optic cable connections - Google Patents

Abstract

(57) [Problem] To provide a compact container for accommodating a cable connection portion, which can accommodate a relatively large number of cable connection portions, has high workability, and is compact. SOLUTION: The cabinet according to the present invention has a support portion 22 for detachably supporting a connection portion of an optical fiber cable.
And an extra length storage body 27 for storing the extra length of the optical fiber connected to the support portion 22, and a cabinet body that covers the support portion 22 and the extra length storage body 27 from above. The optical fiber introduced into the cabinet body is inserted into the extra length storage 27 from the end on the side of the support 22, forms a loop in the extra length storage 27, and separates from the support 22. From the side end toward the support portion 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for accommodating a connection portion of an optical fiber cable.

[0002]

2. Description of the Related Art Conventionally, when an optical fiber cable (hereinafter abbreviated as "cable") is connected outdoors, for example, the optical fibers are connected to each other in a container generally called a closure installed on a telephone pole or the like. To protect the cable connection.

[0003]

However, since the closure is small in size, the number of connectable cables is small, and there has been a problem that it is difficult to cope with the recent increase in the amount of cable laid. In addition, the workability at the time of connecting the cable is low, the excess length of the fiber is difficult to be stored, and the stored optical fiber is easily stressed due to bending, and the life of the optical fiber is shortened. .

[0004] On the other hand, the above problem can be solved to some extent by increasing the size of the container for accommodating the cable connection portion. In this case, since the container is expected to be installed on the ground, it does not hinder traffic. As such, it is necessary to make the container as small as possible.

The present invention has been made in view of the above circumstances, and relates to a container for accommodating a cable connection portion, and more particularly, a compact container capable of accommodating a relatively large number of cable connection portions, having high operability, and having a high workability. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION The present invention is a cabinet for accommodating a connection portion of an optical fiber cable, comprising a support portion for detachably supporting the connection portion, and an optical fiber connected to the support portion. An extra-length storage body for storing the extra length of the fiber, and a cabinet body that covers the support portion and the extra-length storage portion from above are provided, and the extra-length storage portion is erected right and left below the support portion. The optical fiber introduced into the cabinet body is inserted into the extra length storage body from the support part side, and forms a loop in the extra length storage body. It is characterized in that it is led out from the side away from the support portion toward the support portion.

Here, it is preferable that the optical fiber introduced into the cabinet main body and reaching the extra length storage body is locked at a predetermined position in the cabinet main body by locking means.

Further, as the above-mentioned locking means, for example, a magic fastener which locks the above-mentioned optical fiber between the detachable cloth pieces through the contact surfaces of each other is used.
Further, it is preferable that at least one of the contact surfaces of the magic fastener supports an elastic piece, such as a sponge piece, for preventing movement of the optical fiber sandwiched between the cloth pieces.

Further, it is preferable that the cloth piece is composed of a fixed piece fixed at the predetermined position and a plurality of strip-shaped peeling pieces detachably attached to the fixed piece.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 shows an external view of a cabinet for storing an optical fiber cable connection portion (hereinafter, abbreviated as a cabinet) according to the present invention. In the figure, reference numeral 1 denotes a base, and holes for fixing are provided at four corners thereof, and a cabinet body 3 having a cylindrical shape with a bottom is detachably mounted on the base 1 in a protruding state at the center thereof. It is supported by. The cabinet body 3 is made of, for example, an integrally molded plastic product, and a lock 4 for preventing the cabinet body 3 from being removed is provided near the opening end.

FIG. 2 shows the internal structure of the cabinet when the cabinet body 3 is removed. Reference numeral 5 denotes a pedestal for mounting the cabinet body 3, and a protrusion 6 is formed on a side surface thereof so as to engage with the inner peripheral surface of the cabinet body 3. Reference numeral 7 denotes a sealing material fixed to the side surface of the pedestal 5 along the circumferential direction thereof.
Since the sealing member 7 is in close contact with the inner peripheral surface of the cabinet body 3, airtightness in the cabinet body 3 is maintained.

Reference numeral 8 denotes a plurality (four in the figure) of pipes erected on the left and right ends of the pedestal 5. Reference numeral 9 denotes a pair of left and right plates erected on the pedestal 5 in the vicinity of the pipe 8. A pair of upper and lower support arms 10 and 11 project from the plate 9 above the pipe 8.

Reference numeral 21 denotes a stay erected at the center of the pedestal 5. A support 22 for detachably supporting a cable connecting portion is supported on the upper end of the stay 21. The support portion 22 is composed of a plurality of partition plates 23 erected back and forth through a gap having a predetermined width and a semi-cylindrical guide portion 24 protruding upward and projecting right and left from a lower end of the partition plate 23. It is configured.

Reference numeral 25 denotes an extra length storage section supported by the stay 21 at the lower left and right sides of the support section 22. The extra length storage portion 25 includes a rectangular frame-shaped holder 26 provided on each of the left and right sides of the guide plate 24, and a cylindrical extra length storage body 27 erected in the holder 26 and opened upward. It is schematically composed of

Here, the extra length storage body 27 is formed in a thin sheath shape having a U-shaped bottom surface, and the width of the space formed therein (the symbol W in FIG. 3) is the width of the optical fiber. It is set larger than the minimum bending diameter. Also, the holder 26
The number of the extra length storage bodies 27 supported by the support section 22 is the same as the number of the connection sections that can be supported by the support section 22. On the other hand, semi-circular guides 28 protruding upward are provided on the side of the holder 26 opposite to the support 22, that is, on both left and right side surfaces, and the guides 28 A guide plate 29 is provided upright to prevent the optical fiber from dropping from the outside.

Reference numeral 31 denotes a guide portion 28 of the extra length storage body 27.
Locking means provided on the lower side surface. The locking means 31 is a magic zipper made of cloth pieces which can be detachably attached to each other via their contact surfaces, and these cloth pieces are fixed to the side surfaces of the extra length storage body 27 as shown in FIG. And a plurality of strip-like strips 31b detachably attached to the fixed piece 31a. An elastic piece 32 such as a sponge piece is fixed to the contact surface of the peeling piece 31b.

When storing the cable connection portion in the cabinet having the above configuration, first, the cabinet body 3 is removed, and a cable (not shown) into which the input side and the output side optical fibers 41 are respectively inserted is inserted. The cables are introduced into the cabinet from below through the right and left pipes 8, and the upper end of the cable is clamped by the support arm 10. The optical fiber 41 derived from the cable is
A plurality of the support arms 11 are put together.

[0018] Next, after arranging the base end portion of the optical fiber 41 in the longitudinal on the fixing piece 31a of the locking means 31, as shown in Figure 4 in the arrow P _1, on a fixed piece 31a, the locking piece 31b is installed vertically. Then, the contact surfaces of the locking piece 31a and the peeling piece 31b are in close contact with each other, and the elastic piece 32 fixed to the contact surface of the peeling piece 31b abuts the optical fiber 41 from the side. As a result, the fixing piece 31a The movement of the optical fiber 41 sandwiched between the separation piece 31b is prevented by the contact with the elastic piece 32, and the optical fiber 41 is locked between the fixed piece 31a and the separation piece 31b.

On the other hand, the optical fibers 41 are connected to each other by inserting the distal end of the optical fiber 41 led out to the center of the cabinet into the optical fiber connection case 42 from the left and right. Then, as shown in Figure 3 in the arrow P _2, in a state where the optical fiber 41 was suspended in the left and right respectively, the case 42 by inserting from above vertically into the gap formed between the partition plate 23, the case 42 is supported by the support 22.

Further, a space between the locking means 31 and the case 42 is provided.
When storing the extra length of the optical fiber 41,
Each optical fiber 41 inserted into one case 42 has an optical fiber
Fiber 41 is inverted between locking means 31 and case 42
The remaining length of the optical fiber 41 is indicated by an arrow R in FIG.
The loop R is directed downward. Then, the arrow P in FIG. _Three
As shown by, this loop R is formed along the guides 24 and 28.
By inserting into the extra length storage body 27 from above,
Extra storage is completed.

That is, in the case of the present invention, after the optical fiber 41 locked by the locking means 31 is inserted into the extra length storage 27 from the support portion 22 side, it is inverted in the extra length storage 27. As a result, it is led out toward the support portion 22 from the side separated from the support portion 22, that is, from the guide portion 28 side. When the support of the cable connection portion and the storage of the extra length are completed, the cabinet body 3 is mounted and locked.

Here, as shown in FIG. 2, in the cabinet according to the present invention, as shown in FIG. 3, a support portion 22 capable of accommodating a large number of cable connection portions and an extra length storage portion 25 can be installed. Has become. Therefore, according to the cabinet of the present invention, a relatively large number of cable connection portions can be stored as compared with the conventional closure. Further, by removing the cabinet body 3, the support portion 22 and the extra length storage portion 2 are removed.
5 is released, so that high workability can be obtained.

Further, since the extra length storage portion 25 is supported by the stay 21 at the lower left and right sides of the support portion 22, the distance between the extra length storage portions 25 is minimized. Therefore, the extra length storage section 25
The width in the left-right direction of the internal structure of the cabinet including the is reduced as much as possible, and a compact cabinet can be obtained.

Moreover, the case 42 is inserted into the gap between the partition plates 23 from above, and the extra length of the optical fiber 41 is inserted into the extra length housing 27 from above along the guide portions 24 and 28, The cable connection portion can be easily stored. Particularly, the optical fiber 41 is connected to the locking means 31 and the case 4.
By inverting between the two, a downward loop R is formed in the optical fiber 41, and since this loop R is inserted into the extra length storage body 27, the curvature of the optical fiber 41 accompanying the extra length storage is The diameter becomes relatively large. Accordingly, the stress acting on the optical fiber 41 can be small even though the distance between the extra length storage portions 25 is minimum.

On the other hand, the optical fiber 41 led out of the cable is simply supported between the fixing piece 31a of the locking means 31 and the peeling piece 31b, so that the optical fiber 41 is easily supported in the cabinet. In addition, due to the elasticity of the elastic piece 32, even when the optical fiber 41 is brought into contact with the elastic piece 32, the stress acting on the optical fiber 41 can be reduced.
Note that the elastic piece 32 is not the peeling piece 31b but the fixing piece 3
1a may be provided on the contact surface.

[0026]

As described above, according to the present invention, it is possible to obtain a compact cabinet which can accommodate a relatively large number of cable connection portions, has high workability, and is compact.

[Brief description of the drawings]

FIG. 1 is an upper perspective view showing the structure of a cabinet according to the present invention.

FIG. 2 is an upper perspective view showing the internal structure of the cabinet according to the present invention.

FIG. 3 is an upper perspective view showing a structure of a support portion and a surplus storage portion used in the cabinet according to the present invention.

FIG. 4 is a view showing a structure of a locking means used in the cabinet according to the present invention.

[Explanation of symbols]

3 ... cabinet body, 22 ... support part, 27 ... extra length storage body, 31 ... locking means, 31a ... fixed piece, 31
b: peeling piece, 32: elastic piece, 41: optical fiber,
R ... loop

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshikazu Nomura 1440 Mutsuzaki, Sakura City, Chiba Prefecture Inside Fujikura Sakura Plant

Claims (6)

[Claims] 1. A cabinet for accommodating a connection portion of an optical fiber cable, comprising: a support portion for detachably supporting the connection portion; and a room for storing an extra length of an optical fiber connected to the support portion. A long storage body, and a cabinet body that covers the support portion and the extra length storage body from above, wherein the extra length storage body is a tubular member that is erected right and left below the support portion, The optical fiber introduced into the cabinet main body is inserted into the extra length storage from the support portion side, forms a loop in the extra length storage, and further, the support portion from the side separated from the support portion. A cabinet for storing an optical fiber cable connection portion, which is led out toward a computer. 2. The apparatus according to claim 1, further comprising a locking means for locking the optical fiber introduced into the cabinet main body and reaching the extra length storage body at a predetermined position in the cabinet main body. Cabinet for storing optical fiber cable connections. 3. The fastener according to claim 2, wherein said locking means is a magic fastener for locking said optical fiber between said pieces of cloth which are detachable via their contact surfaces. Cabinet for storing optical fiber cable connections. 4. The light according to claim 3, wherein an elastic piece for preventing movement of the optical fiber sandwiched between the cloth pieces is supported on at least one of the contact surfaces of the magic fastener. Cabinet for storing fiber cable connections. 5. The cabinet according to claim 4, wherein the elastic piece is a sponge piece. 6. The apparatus according to claim 1, wherein the cloth piece comprises a fixed piece fixed as described above, and a plurality of strip-shaped strip pieces detachably attached to the fixed piece. The cabinet for storing an optical fiber cable connection part according to any one of claims 3 to 5.