KR102485153B1 - Optical fiber distribution box - Google Patents

Abstract

The present invention relates to an optical distribution box, wherein a space for inserting cables and a space for inserting optical jumper cords are separated, and individual insertion passages are provided for each of a plurality of optical jumper cords, thereby facilitating insertion and connection of optical jumper cords. be able to carry out.

Description

Optical distribution box {OPTICAL FIBER DISTRIBUTION BOX}

The present invention relates to an optical distribution box, and relates to an optical distribution box for branching an optical cable into a plurality of optical jumper cords.

An optical cable having a plurality of optical circuits (core wires) is inserted into the optical distribution box, and each core wire of the optical cable is connected to each optical jumper code through an adapter.

1 shows an example of such photolysis. The optical distribution box 1 includes an outer case 1a in the shape of a box (enclosure) and an inner case 1b that is opened and closed in a rotational manner in the outer case 1a, and the inner case 1b includes an optical connection unit. (1c) and adapter part 1d are provided.

In the adapter unit 1d, optical jumper cords and connection cores are connected to both sides of a plurality of adapters installed in the adapter bracket, and each core wire of the optical cable inserted into the optical distribution box 1 and the connection cores are one-to-one in the optical connection unit 1c. connected to

The optical connection part 1c is provided in the shape of a tray having a redundant arrangement part for arranging the redundancy of the core wires on both sides.

On the other hand, in optical relay stations and optical base stations, since numerous optical cables must be branched and connected in a limited space, a plurality of optical distribution boxes 1 are stacked inside a rack 2 as shown in FIG. 2 (front view of a rack). I am using it.

The rack 2 is like a metal cabinet, and has doors installed on both the front and rear sides, so that it can be opened as needed, and work can be performed from both the front and rear sides.

As shown in FIG. 3 (rear view of the rack), both the optical cable 3 and the optical jumper cord 4 are installed in a structure inserted into the optical distribution box 1 from the rear side thereof. By the way, the optical cable (3) is easy to insert into the optical distribution box (1) as a plurality of core wires form one cable, but in the case of the optical jumper cord (4), since the plurality of wires are all individually formed, the optical distribution It was not easy to insert into the box (1).

In addition, the insertion of the optical jumper cord 4 is performed through an insertion hole formed on the rear or side surface of the optical distribution box 1. The area of the insertion hole is not large enough and the insertion hole is located adjacent to the wall surface of the rack. The work was inconvenient.

Not only is the work inconvenient as described above, but also when another optical jumper cord (4) is inserted in a situation where a plurality of optical jumper cords (4) are installed, the optical jumper cord (4) installed first is physically affected to improve the quality of the optical line. There is always the possibility of adverse effects.

Therefore, to make the work easier, one worker inserts the optical jumper cord (4) from the rear, and the other worker pulls the optical jumper cord (4) from the front, withdraws it, and connects it to the adapter (1d). are doing As such, it was very inefficient in terms of manpower and cost because two workers were performing the optical line construction work.

Republic of Korea Registered Patent Publication No. 10-0796211 (registered on January 14, 2008)

Therefore, the present invention has been made to solve the above problems, and an optical distribution box in which the insertion of optical jumper cords is easy, does not adversely affect the previously installed circuit when inserted, and allows one worker to work alone. Its purpose is to provide

An embodiment according to the present invention for achieving the above object is formed in an upper unit into which cables are inserted from the rear, a lower unit through which a plurality of optical jumper cords pass from the rear to the front, and the lower unit. and an optical jumper cord insertion passage providing an individual passage for each optical jumper cord.

The upper unit includes a flat box-shaped outer case and an inner case built into the outer case and withdrawable forward. In the inner case, a plurality of adapters are installed on the front plate, and the core wire and adapter of the cable are A tray to which the connected core wires are optically connected is installed.

The inner case is installed to the outer case via a slide rail.

A plurality of barrier ribs are installed at regular intervals in the width direction on the bottom plate of the case of the lower unit to form the optical jumper cord insertion passage.

The rear ends of the barrier ribs are all positioned on the same line, and a cross-dressing organizing space is formed between the rear ends of the barrier ribs and the rear end of the case to organize the optical jumper cord's cross-dressing.

The front ends of the barrier ribs are bent in one direction to form an inclined portion for guiding an optical jumper cord toward the adapter.

Unique identification numbers are displayed on the rear and front ends of the optical jumper cord insertion passage.

In addition, another embodiment of the present invention, the lower case forming the bottom plate and both side plates connected thereto, the upper cover covering the upper part of the lower case, and the space formed by the lower case and the upper cover An inner case installed in the upper space, a cable is introduced from the rear, and a plurality of adapters optically connected to the core wire of the cable are installed on the front plate, and inserted into the lower space of the inner case in the space formed by the lower case and the upper cover. and an optical jumper cord insertion passage providing an individual passage for each of a plurality of optical jumper cords.

The inner case is installed to the lower case via a slide rail.

A plurality of barrier ribs are installed at regular intervals in the width direction on the bottom plate of the lower case to form the optical jumper cord insertion passage.

The rear ends of the barrier ribs are all positioned on the same line, and a rear end portion of the barrier ribs and a rear end portion of the lower case are formed between the rear ends of the barrier ribs to organize the optical jumper cord's cross-dressing.

The front ends of the barrier ribs are bent in one direction to form an inclined portion for guiding an optical jumper cord toward the adapter.

Unique identification numbers are displayed on the rear end and the front end of the optical jumper cord insertion passage.

According to the present invention as described above, since individual insertion passages are provided for each optical jumper cord, it is possible to easily insert the optical jumper cord without interference with the sidewall of the rack and other optical jumper cords.

Since interference between the optical jumper codes does not occur as described above, when the optical jumper cords are inserted, the previously installed optical jumper cords are not affected, so that deterioration in optical line quality due to unreasonable insertion work can be prevented.

Since it is easy to insert the optical jumper cord, one worker can exclusively perform the optical line connection work, which has the effect of reducing manpower and costs.

The present invention as described above can be manufactured and used as a 2-unit individual structure and a 2-unit integrated structure.

1 is an exemplary view of an optical distribution box according to the prior art;
2 is a front view of a rack in which an optical distribution box is installed;
3 is a rear view of a rack in which an optical distribution box is installed;
4 is a front view of an optical distribution box according to the present invention;
5 is a rear view of an optical distribution box according to the present invention;
6 is a perspective view of an upper unit of an optical distribution box according to the present invention;
7 is a perspective view of a lower unit of an optical distribution box according to the present invention;
8 is a perspective view of an optical distribution box in which the upper unit and the lower unit are integrally formed;

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The thickness of lines or the size of components shown in the accompanying drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention of a user or operator or a precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 are front and rear views of the optical distribution box 100 according to the present invention, respectively. As shown, the optical distribution box 100 according to the present invention may be composed of an upper unit 10 and a lower unit 20. A plurality of adapters 15 are provided on the front surface of the upper unit 10, and 'optical jumper cord insertion passages' penetrating the front and rear directions are formed in the lower unit 20.

6 is a perspective view of the upper unit 10 from above. As shown, the upper unit 10 includes an outer case 11 and an inner case 12 accommodated in the outer case 11. include

The outer case 11 has a plate-shaped rectangular parallelepiped shape, the front surface is open, and a mounting flange 11a bent outward is formed at the front end of both side plates so as to be mounted on a rack.

Insertion holes 11b are formed through both ends of the rear plate of the outer case 11, rear ends of both side plates, and rear ends of both sides of the bottom plate, respectively. An optical cable is inserted into the upper unit 10 through the insertion holes 11b.

In FIG. 6 , the top plate of the outer case 11 is not shown, but it goes without saying that the top plate can be formed as needed.

The inner case 12 is a rectangular parallelepiped shape having a slightly smaller width and thickness than the outer case 11 (in the case of the inner case 12, a top plate is not required), and is stored in a drawer type inside the outer case 11 and pushed or It is designed to be pulled out. To this end, slide rails 13 are installed between both side plates of the inner case 12 and both side plates of the outer case 11 so that the inner case 12 can smoothly open and close the outer case 11. has been

In the case of the inner case 12, the cable inserted through the insertion hole 11b of the outer case 11 can be easily introduced into the inner space of the inner case 12 and the rear surface to avoid interference with the cable. Plates are not formed.

A tray 14 is installed on the bottom plate of the inner case 12 . At the middle portion of the tray 14, an optical connection portion 14a is provided in which a junction between the core wire core of the cable and the core wire connected to the adapter 15 (to be described below) is accommodated and stored.

In addition, on both sides of the optical connection part 14a, a redundant arrangement part 14b for arranging the redundancy of the core wires is provided.

A plurality of adapters 15 are installed on the front plate of the inner case 12 . A plurality of adapter holes are formed on the front plate of the inner case 12 in one direction in the width direction, and the same number of adapters 15 are inserted and installed into the adapter holes. Therefore, the optical jumper cord is connected to the outer part of the adapter 15 (the part protruding outside the inner case 12), and the connecting core wire is connected to the inner part (the part protruding inside the inner case 12).

The adapter 15 is connected to the head portion of the optical jumper cord connected thereto, that is, the connection portion of the connector and the cord inserted into the adapter 15 is not subjected to stress and can be smoothly and easily connected in one direction. It is installed in an angularly rotated state. That is, when the operator faces the front of the upper unit 10, it is installed at an angle of about 20 to 30 degrees in a counterclockwise direction.

On the other hand, as shown in FIG. 7, the case 21 of the lower unit 20 has a shape in which side plates are formed on both sides of the rectangular bottom plate, and the left and right widths and the front and rear lengths thereof are the outer case of the upper unit 10 ( 11) is the same as

Mounting flanges 21a bent outward are formed at front ends of both side plates of the case 21 so that they can be fixedly installed in a rack.

When the upper unit 10 and the lower unit 20 are installed in a rack, as shown in FIGS. 4 and 5, they are installed vertically adjacent to each other. Since the bottom plate of the outer case 11 can replace the role of the top plate (cover), there is no need to form the top plate. However, it goes without saying that the upper plate of the lower unit 20 itself can be formed as needed.

On the bottom plate of the case 21, a plurality of partition walls 22 are installed long in the front-rear direction. In addition, the barrier ribs 22 are continuously installed at regular intervals in the width direction of the lower unit 20 . Accordingly, an 'optical jumper cord insertion passage' is formed between the barrier ribs 22 .

The number of optical jumper cord insertion passages is equal to the number of adapters 15 installed in the upper unit 10. That is, one optical jumper cord is inserted into one optical jumper cord insertion passage and connected to the adapter 15 corresponding one to one.

All of the rear ends of the partition wall 22 are located at the same position in the front-back direction of the case 21, that is, on the same line.

A predetermined distance is spaced between the rear ends of the barrier ribs 22 and the rear end of the case 21 . That is, since there is an empty space and a bottom surface behind the rear ends of the bulkheads 22, that portion can be used as a space for arranging the clothes of the optical jumper cords. Brackets necessary for arranging the optical jumper cord may be installed, but are not shown.

The front end of the partition wall 22 is formed with an inclined portion 22a bent at a predetermined angle in one direction. The bending angles of all the inclined portions 22a are the same, and thus the front end widths of the optical jumper cord insertion passages are all the same.

In FIG. 7, reference numeral 23 is a 'front plate' and blocks the remaining portion of the front of the case 21 where the partition wall 22 is not installed.

4, 5 and 6, 7, in the state where the upper unit 10 and the lower unit 20 are installed in the rack, the adapters 15 and the bulkhead 22 in the left and right width directions of these units ) are installed in opposite directions. That is, the adapters 15 are installed skewed to the left side of the upper unit 10 in the width direction, whereas the bulkheads 22 are installed skewed to the right side of the lower unit 20 in the width direction.

The above-mentioned positional relationship and the optical jumper cord drawn forward through the space between the barrier ribs 22 (optical jumper cord insertion passage) by the inclined portion 22a can be naturally connected to the adapter 15 without excessive bending of the cord. Therefore, stress does not occur in the head part of the optical jumper cord.

The operational effects of the present invention will now be described.

When the upper unit 10 and the lower unit 20 are installed in the rack, they are installed adjacent to each other in the vertical direction as shown in FIGS. 4 and 5.

The upper unit 10 and the lower unit 20 are formed by fixing the outer case 11 and the mounting flanges 11a and 21a formed at the front end of the case 21 to the corresponding part of the rack with a fastening means such as a bolt. The installation state can be maintained stably.

In the installation state as described above, the front has the structure shown in FIG. 4 and the rear has the same structure as shown in FIG. 5.

The optical cable is inserted into the upper unit 10 through the insertion hole 11b of the upper unit 10, and the optical jumper cord is at the rear end of the optical jumper cord insertion passage formed between the partition walls 22 of the lower unit 20. inserted towards The connecting work of the core wire of the cable and the connecting core wire connected to the adapter 15 precedes the connecting work of the optical jumper cord.

In the above optical distribution box installation state, an optical jumper cord is installed to connect the optical distribution box to the user's network. Insert the jumper cord.

At this time, since one optical jumper cord is inserted per insertion passage, the optical jumper cord can pass through the lower unit 20 very easily without interfering with other optical jumper cords, and thus the optical jumper cord insertion operation is very easy. .

Thereafter, the operator moves to the front of the rack, grabs and pulls the head (connector) of the optical jumper cord protruding forward of the optical jumper cord insertion passage, and inserts it into the corresponding adapter 15 to complete the connection.

At this time, since other optical jumper cords do not contact the optical jumper cord, the optical jumper cord can be easily pulled out from the insertion passage, and the optical jumper cord is naturally drawn toward the adapter 15 by the inclined portion 22a. direction, and in addition, since the adapter 15 is installed in a state of being rotated by a predetermined angle in a counterclockwise direction, the optical jumper cord can be connected to the adapter 15 very easily, and the head of the optical jumper cord is excessively bent. Since this does not occur (a marginal radius of curvature is secured), physical stress is not applied to the connection part of the connector and the cord. Therefore, since the core inside the head unit is not damaged, deterioration of optical connection quality is prevented.

Meanwhile, identification numbers unique to each insertion passage may be displayed on the front and rear bottom portions of the optical jumper cord insertion passage. In the case of the front end of the insertion passage, an identification number may also be displayed on the inclined portion 22a. In addition, it is preferable that identification numbers are consecutively assigned from left to right or from right to left. Correspondingly, each unique identification number may be assigned to the adapter 15 in the same order as the order formed in the optical jumper cord insertion passage.

As described above, since a unique identification number is assigned to each optical jumper cord insertion passage, the optical jumper cord can be easily identified, thereby facilitating maintenance work and improving work efficiency.

As described above, since one independent insertion passage is secured for each optical jumper cord, it is very easy to insert the optical jumper cord, thereby improving work efficiency and preventing an error in connecting the optical jumper cord due to a worker's mistake. This effect can be further enhanced by the identification number display.

In addition, conventionally, when connecting optical jumper cords, two workers formed a team to work in front and behind the rack, but when the present invention is applied, one worker can work sufficiently, which has the effect of reducing manpower costs by half. .

In addition, as described above, an empty space is provided at the rear of the lower unit 20, that is, at the rear of the part where the optical jumper cord insertion passage is formed (partition wall 22 installation part), so that the optical jumper cord can be arranged and maintained. In addition to being convenient, it is possible to improve the aesthetic appearance of the optical distribution box 100 in a narrow sense and the rack in a broad sense.

Meanwhile, FIG. 8 shows another embodiment in which the upper unit 10 and the lower unit 20 are manufactured as one integral unit.

In the optical distribution box 100 according to the embodiment shown in FIGS. 4 and 5, the upper unit 10 and the lower unit 20 are formed as independent individual units, and they are installed adjacent to the rack in the vertical direction, respectively, so that one It can be used to act as an optical distribution box.

In addition, the light distribution box 100' according to the embodiment shown in FIG. 8 may be manufactured in a form in which the upper unit 10 and the lower unit 20 are integrated to form one unit.

As a so-called 2U (Two Unit) integrated type, the light distribution box 100' has all necessary components installed inside one lower case 110 and upper cover 120.

A mounting flange 111 is formed at the front end of both side plates of the lower case 110 to be fixed to the rack.

On the bottom surface of the lower case 110, the partition walls 22 are installed at regular intervals and at the same number as the adapters 15 to form 'optical jumper cord insertion passages' (in the drawing, the inclined portion, which is the front part of the partition wall 22 ( Although only 22a) is shown, the internal structure is the same as that of the lower unit 20 described in FIG. 7).

The inner case 12 is installed in the upper part of the space where the optical jumper cord insertion passages are formed. It can be withdrawn or pushed back into place.

The same number of adapters 15 as the optical jumper cord insertion passages are installed on the front of the inner case 12.

As described above, if the optical distribution box 100' is a two-unit integrated type having all necessary components inside one case, the outer case 11 of the upper unit 10 shown in FIG. The box 100' can be manufactured lightly with a simpler structure.

Therefore, the production cost of the optical distribution box is reduced, and handling and assembly are easy.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and various modifications and other equivalent embodiments will be made by those skilled in the art in the field to which the technology belongs. You will understand that it is possible. Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: upper unit 11: outer case
11a: mounting flange 11b: insertion hole
12: inner case 13: slide rail
14: tray 14a: optical connection
14b: dress organizer 15: adapter
20: lower unit 21: case
21a: mounting flange 22: bulkhead
22a: inclined portion 23: front plate
100,100′: optical distribution box 110: lower case
111: mounting flange 120: upper cover

Claims (13)

an upper unit into which cables are inserted from the rear;
a lower unit through which a plurality of optical jumper cords pass from the rear to the front;
An optical jumper cord insertion passage formed in the lower unit and providing an individual passage for each of the optical jumper cords;
A plurality of barrier ribs are installed at regular intervals in the width direction on the bottom plate of the case of the lower unit to form the optical jumper cord insertion passage,
An optical distribution box characterized in that the front ends of the barrier ribs are bent in one direction to form an inclined portion for guiding an optical jumper cord to an adapter installed in the upper unit. The method of claim 1,
The upper unit includes a flat box-shaped outer case and an inner case built into the outer case and withdrawable forward. In the inner case, a plurality of adapters are installed on the front plate, and the core wire and adapter of the cable are An optical distribution box characterized in that a tray to which the connected core wires are optically connected is installed. The method of claim 2,
The inner case is an optical distribution box, characterized in that installed in the outer case via a slide rail. delete The method of claim 1,
The rear ends of the barrier ribs are all positioned on the same line, and a cross-dressing organizing space is formed between the rear end of the barrier ribs and the rear end of the case to organize optical jumper cords. delete The method of claim 1,
An optical distribution box characterized in that unique identification numbers are marked on the rear end and the front end of the optical jumper cord insertion passage. A lower case forming a bottom plate and both side plates connected thereto;
an upper cover covering an upper portion of the lower case;
an inner case installed in an upper space of the space formed by the lower case and the upper cover, into which cables are introduced from the rear, and a plurality of adapters optically connected to the core wires of the cable are installed on the front plate;
An optical jumper cord insertion passage providing an individual passage for each of a plurality of optical jumper cords inserted into the lower space of the inner case in the space formed by the lower case and the upper cover,
A plurality of barrier ribs are installed at regular intervals in the width direction on the bottom plate of the lower case to form the optical jumper cord insertion passage;
An optical distribution box characterized in that the front ends of the barrier ribs are bent in one direction to form an inclined portion to guide an optical jumper cord in a drawing direction toward the adapter. The method of claim 8,
The inner case is an optical distribution box, characterized in that installed in the lower case via a slide rail. delete The method of claim 8,
The rear ends of the barrier ribs are all located on the same line, and an optical distribution box is formed between the rear end of the barrier ribs and the rear end of the lower case to organize the rear end of the optical jumper cord. delete The method of claim 8,
An optical distribution box characterized in that unique identification numbers are marked on the rear end and the front end of the optical jumper cord insertion passage.

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