KR20200134674A - Terminal Box System For Optical Fiber and Power Line Composite Cable And Terminal Box System - Google Patents

Abstract

The present invention relates to a terminal box for a photoelectric composite cable with the improved workability in connection work between a terminal box and a photovoltaic composite cable in a base station, and a photoelectric composite terminal box system. The terminal box for the photoelectric composite cable comprises: a housing; a plurality of jumper connection units; a power unit connection unit; and an optical unit connection unit.

Description

Terminal box system for optical fiber and power line composite cable and terminal box system

The present invention relates to a terminal box for a photoelectric composite cable and a system of a photoelectric composite terminal box. In more detail, the present invention relates to a terminal box for a photoelectric composite cable and a system of a photoelectric composite terminal box with improved workability in connection work between a terminal box and a photoelectric composite cable in a base station.

In the case of conventional mobile communication, communication signals are transmitted from a base station of a communication company to a base station, and an RF signal transmitted from a base transceiver station (BTS) of the base station is wirelessly transmitted through a base station antenna. In addition, the radio signal transmitted from the user's portable terminal is received by the base station antenna, and the received signal is amplified through a tower mount amplifier (TMA) and transmitted to the BTS.

At this time, the BTS, the TMA, and the antenna of the base station are connected by a coaxial feed line, but the coaxial feed line has a greater signal loss as the length of the cable increases. When the antenna is installed in a base station tower with a height of several tens of meters, loss increases in the coaxial feed line connecting the antenna with the base station on the ground, and the signal provided by the base station is requested by the antenna due to the signal loss of the coaxial feed line. Since it does not reach the strength of the signal and is attenuated, a TMA is installed to compensate and amplify it.

However, the TMA consumes a relatively large amount of power in order to amplify the signal, and thus, in terms of the overall system, a large cost is required for maintenance, resulting in a problem of inferior efficiency.

Meanwhile, with the evolution of FTTx (Fiber to the X) and miniaturization of relay devices, base station facilities are also evolving. Among them, the optical unit is characterized by a smaller signal attenuation according to the cable length compared to the coaxial cable. By applying these advantages, RRH (Remote Radio Head), a technology that transmits an optical signal right before the antenna of the base station, minimizes signal loss, and converts the optical signal into an RF signal capable of radiating radiation, has appeared.

The RRH compensates for the power consumption and inefficient maintenance of a mobile communication base station using a conventional TMA. The RRH separates the RRU (Remote RF Unit) from the conventional BTS, places it under the antenna of the base station tower, and performs remote control.

Here, the rest of the existing BTS from which the RRU is separated from the RRH, that is, the baseband unit (BBU) and the power supply unit (PSU) are connected to the RRU by a photoelectric composite cable including an optical unit and power unit with little attenuation per length, In the BBU and PSU, communication signals are supplied to the RRU through an optical unit constituting the photoelectric composite cable, and power is supplied to the RRU through the power unit constituting the photoelectric composite cable.

Since the RRU can be installed on the top of the base station tower directly under the base station antenna, the length of the coaxial feed line for supplying the signal converted to the RF signal by the RRU to the antenna is minimized, and thus the RF signal generated when transmitting the RF signal through the coaxial line is minimized. Since signal attenuation is not a problem, the amount of attenuation of the signal just before radiation is minimized, and the need for a TMA that used a lot of power consumption is eliminated. These technical features have become a feature of RRH in terms of the maintenance of the base station.

In this RRH system, the BBU, PSU and RRU are branched and connected through a terminal box for a photoelectric composite cable.

In other words, since the photoelectric composite cable is provided as a single cable, the BBU and PSU and a plurality of RRUs cannot be directly connected to the photoelectric composite cable, and the power unit and the optical unit in the terminal box for the photoelectric composite cable A method of being branched and connected to a plurality of RRUs may be used.

In the case of branching one photoelectric composite cable into a plurality of jumper cables, a plurality of power units and optical units constituting the photoelectric composite cable and power units and optical units constituting each jumper cable are placed in the terminal box. It must be connected using a connector, etc.

As the number of base station antennas increases according to a communication company or communication method, the number of RRUs or terminal boxes increases accordingly. Therefore, the base station management operator must perform the connection work of connecting the power unit and the optical unit of the jumper cable to the optical unit of the jumper cable in the terminal box by breaking away from the photoelectric composite cable, requiring a lot of time and effort.

Accordingly, there is a need for improvement in connection work of a terminal box that connects a photoelectric composite cable and a jumper cable in a rapidly changing environment with more diversified types of communication companies or communication methods.

Conventionally, a method of installing the photoelectric composite cable and the terminal box in a base station while being connected to the terminal box or attaching a cable connector to the end of the photoelectric composite cable and connecting it to a cable connection unit provided in the terminal box has been introduced.

In the former case, it is not easy to pull the photoelectric composite cable up to the base station antenna located at a height of several tens of meters with the terminal box mounted at the end of the photoelectric composite cable, and in the process of pulling the terminal box and the photoelectric composite cable with the base station antenna Sufficient passages must be secured so that the box can pass, and there is a problem that there is a possibility of being damaged in the process of transporting the bulky terminal box.

Also, in the latter case, when connecting the photoelectric composite cable to the terminal box by pulling up the photoelectric composite cable while the terminal box is installed in the base station tower, it is difficult to connect the photoelectric composite cable to the terminal box due to its own weight. In particular, the connection work is very difficult because the connection terminals of the photoelectric composite cable and the connection terminals of the cable connection unit of the terminal box have to be aligned and combined correctly, and the connection work is very difficult. The task of connecting composite cables is very difficult.

An object of the present invention is to provide a terminal box for a photoelectric composite cable and a system of a photoelectric composite terminal box with improved workability of a connection operation between a terminal box and an photoelectric composite cable in a base station.

In order to solve the above problems, the present invention provides a terminal box for a photoelectric composite cable for branching at least one photoelectric composite cable including a plurality of power units and a plurality of optical units into a plurality of jumper cables, and one side is opened. A housing having an accommodation space therein and having a door for selectively opening and closing the accommodation space; A plurality of jumper connection units provided on the outer surface of the housing and each having an optical terminal and a power terminal to detachably mount the jumper connector of the jumper cable; A power unit connection part to which a plurality of power units of the photoelectric composite cable introduced into the housing and a plurality of connection power units connected to power terminals of the jumper connection unit are connected; An optical unit connection part mounted in front of the power unit connection part and to which an optical unit of the photoelectric composite cable introduced into the housing and a first connection optical unit connected to an optical terminal of the jumper connection unit are connected; Terminal box can be provided.

In addition, the power unit connection part may be provided on an inner surface of the accommodation space facing a door that shields the accommodation space.

In addition, the optical unit connection part may be hinged to the inner side of the housing and rotated to be exposed to the front of the power unit connection part.

Here, the optical unit connection part may be hinged to the inner side of the housing and rotated to be exposed to the front of the power unit connection part.

In this case, the optical unit connection unit may include an optical unit housing, and a second connection optical unit connecting the first connection optical unit and the optical unit of the photoelectric composite cable in the optical unit housing.

In addition, the first connecting optical unit and the optical unit of the photoelectric composite cable may be connected to an outer surface of the optical unit housing by an optical connector.

In addition, the second connection optical unit and the first connection optical unit may be connected to an outer surface of the optical unit housing by an optical connector.

Here, the optical connector may be a multiple-fiber push-on (MPO) type optical connector.

In this case, the first connecting optical unit and the optical unit of the photoelectric composite cable may be connected to the optical connector and then bypassed around the power unit connection portion and disposed along the inner edge of the housing.

In addition, the housing has a rectangular parallelepiped shape, the photoelectric composite cable is introduced through a lower surface of the housing, and a jumper connection unit to which the jumper cable is connected may also be provided on the lower surface of the housing.

In the power unit connection part, the power unit of the photoelectric composite cable and the connection power unit may be connected in a horizontal direction.

In addition, in order to solve the above problems, the present invention provides a terminal box for a photoelectric composite cable installed in a base station tower; And, a plurality of optical units provided in the center and connected between a baseband unit (BBU) located outside the base station tower and the terminal box, and a power supply unit (PSU) located around the optical unit and located outside the base station tower. At least one photoelectric composite cable including a plurality of power units connected between the terminal boxes and introduced through a lower surface of the terminal box; A plurality of jumper cables connected between the terminal box and a remote RF unit (RRU) installed in the base station tower, including one or more optical units and one or more power units, and connected to a jumper connection unit on the outer surface of the housing of the terminal box; It is possible to provide a photoelectric composite terminal box system comprising a.

According to the terminal box and terminal box system for a photoelectric composite cable according to the present invention, in the process of connecting the BBU or PSU and the RRU constituting the RRH system through the terminal box for the photoelectric composite cable, the photoelectric composite cable is installed in the terminal box. You can make the work easier.

In addition, according to the terminal box and terminal box system for a photoelectric composite cable according to the present invention, the positions of the optical unit connection part and the power unit connection part for connecting the optical unit and the power unit are dualized in the thickness direction of the housing, and By rotatably mounting the unit connection, it is possible to improve the workability of the connection work between the optical unit and the power unit, and to minimize the volume of the terminal box.

In addition, according to the terminal box and terminal box system for a photoelectric composite cable according to the present invention, it is possible to easily select an optical unit by configuring the optical unit connection part in a housing shape.

In addition, according to the terminal box and terminal box system for a photoelectric composite cable according to the present invention, in the base station connection work, the operator uses a multiple-fiber push-on (MPO) connector provided at the end of the multi-core optical unit of the photoelectric composite cable to the optical unit connection part. Since the optical connection can be completed by attaching it to the corresponding connector of, it is possible to simplify the repetitive optical connection work requiring precision.

In addition, according to the terminal box and terminal box system for a photoelectric composite cable according to the present invention, the optical unit connection part for connecting the optical unit in the terminal box is configured in the form of a housing in which optical connection is performed, and the assembly process of the terminal box Can be simplified.

In addition, according to the terminal box and terminal box system for a photoelectric composite cable according to the present invention, the photoelectric composite cable and the terminal box can be separated and installed, and each power unit after installing the photoelectric composite cable in the terminal box for the photoelectric composite cable Since the connection work at the base station can be completed by connecting the optical unit to the power unit connection unit and the optical unit connection unit, the difficulty of the operation of the base station for the operator of the photoelectric composite cable connection can be reduced.

1 is a block diagram of a terminal box for a photoelectric composite cable and a base station in which the system is installed according to an embodiment of the present invention.
2 is a cross-sectional view of a photoelectric composite cable introduced into the terminal box for a photoelectric composite cable of the present invention and branched or connected.
3 shows the internal structure of the terminal box for a photoelectric composite cable according to the present invention in an open state.
FIG. 4 shows a state in which the optical unit connection part is expanded forward when the door cover of the terminal box for the photoelectric composite cable shown in FIG. 3 is opened.
FIG. 5 shows an example of a state in which the power unit and the connected power unit are connected at the power unit connection part in a state in which the optical unit connection part shown in FIG. 4 is expanded forward.
6 shows an example of a state in which the cover of the optical unit connection part is separated and the optical unit is connected to the optical unit when the door of the terminal box for the photoelectric composite cable shown in FIG. 3 is opened.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art. The same reference numbers throughout the specification denote the same elements.

1 is a block diagram of an RRH base station system 1 in which a terminal box 1200 for a photoelectric composite cable is installed according to an embodiment of the present invention.

Referring to FIG. 1, the RRH base station system 1 separates the RRU 40 from the conventional BTS base station, places it under the antenna 20 of the base station installation tower, and performs remote control.

Here, in the RRH base station system 1, the rest of the existing BTS base station 10 where the RRU 40 is separated, that is, the BBU, the PSU, and the RRU include optical units and power units with little attenuation per length. It is connected by a photoelectric composite cable 100.

Communication signals from the BBU and PSU are supplied to the RRU 40 through the optical unit 130 constituting the photoelectric composite cable 100, and power is supplied to the RRU through the power unit 110 constituting the photoelectric composite cable 100. Supplied to 40.

Since the above-described RRU 40 may be installed directly under the base station antenna 20 on the top of the base station tower, the length of the coaxial line 30 for supplying the signal converted to the RF signal by the RRU 40 to the antenna 20 Is minimized, so that the RF signal attenuation that may occur when transmitting the RF signal through the coaxial line 30 is not a problem, the amount of attenuation of the signal just before radiation is minimized, and the TMA, which used a lot of power consumption, is not required. . These technical features have become a feature of RRH in terms of the maintenance of the base station.

As shown in FIG. 1, the RRH base station system 1 described above is connected to the part 10 consisting of a BBU and a PSU and the photoelectric composite cable 1000 via a terminal box 1200 for a photoelectric composite cable. do.

The optical unit 130 (see FIG. 2) of the photoelectric composite cable 100 is connected to the BBU side, and the power unit 110 (see FIG. 2) is connected to the PSU side.

That is, in the photoelectric composite cable 100, a plurality of optical units and power units are converted into one cable, and a portion 10 composed of a BBU and a PSU and a plurality of RRUs of various types installed in one base station tower are directly It cannot be connected, and each optical unit and power unit constituting the photoelectric composite cable 100 are branched from the terminal box 1200 for the photoelectric composite cable, and then, via a plurality of RRUs 40 and jumper cables 50. Each connected method can be used.

In addition, as the types of portable terminals have recently been diversified, new terminals and old terminals with different communication methods for each communication generation coexist, and a base station tower for installation of the antenna 20 constituting the RRH between mobile communication operators is shared. Equipment such as RRUs constituting dozens of RRHs were installed at the top of the tower, resulting in a lack of limited installation space for the base station tower and increased burden on artillery facilities.

Therefore, when the operator works through the terminal box 1200, the optical unit 130 constituting the photoelectric composite cable 100 and the optical unit and the power unit constituting the power unit 110 and jumper cables 50 are The connection work to connect requires considerable work time.

Therefore, in the present invention, it is possible to easily mount the photoelectric composite cable 100 on the terminal box 1200 while the terminal box 1200 is installed in the base station tower, and furthermore, the photoelectric composite cable 100 can be mounted by one operator. ) To provide a terminal box 1200 for a photoelectric composite cable that can be easily connected to the optical unit 130 and the power unit 110 constituting the terminal box 1200.

Hereinafter, after the structure of the photoelectric composite cable is described, the terminal box 1200 for the photoelectric composite cable according to the present invention will be described in detail.

2 shows an embodiment of a photoelectric composite cable.

Referring to FIG. 2, the photoelectric composite cable 100 may include a cable core 105 and an outer skin layer 150 surrounding the cable core 105.

The cable core 105 may include a plurality of power units 110 for supplying power and a plurality of optical units 130 for transmitting optical signals.

A central tension line 145 may be disposed in the center of the photoelectric composite cable 100, and a plurality of optical units 130 may be disposed around the central tension line 145 in the longitudinal direction of the photoelectric composite cable. .

In addition, a protective layer 140 for protecting the optical unit 130 may be further provided outside the layers of the plurality of optical units 130.

The optical unit 130 may be configured in any form including an optical fiber for transmitting an optical signal, for example, an optical fiber 133 of at least one core or more, and a tube 135 surrounding the optical fiber 133 It may include. The tube 135 may be made of, for example, polybutylene terephthalate (PBT), polypropylene, polyethylene, or polyvinyl chloride. In addition, a filler 137 such as jelly or waterproof yarn may be additionally filled in the tube 135. For example, jelly may be filled, or a tension member (not shown) such as aramid yarn may be filled. The tension member has excellent tensile strength and is flexible, so that the cable can be stably installed.

In addition, as will be described later, the optical unit is provided with a plurality of optical fibers and is connected to an MPO-type optical connector, so that a plurality of jumper cables may be branched and connected in one optical unit.

The optical unit 130 may be configured in a required form among various forms such as a tight buffer method or a loose tube method.

In addition, each of the power units 110 includes a conductor 113 and an insulator 115 surrounding the conductor 113. The power unit 110 may be formed in a form conforming to a standard used for general power, and the plurality of conductors 113 may be twisted with each other. In addition, the conductor 113 may be made of a metal such as copper or aluminum, and the insulator 115 may be made of a polymer resin such as polyethylene, polypropylene, or polyvinyl chloride.

When comparing the optical unit 130 and the power unit 110, the optical unit 130 has a smaller diameter than the power unit 110, and the optical fiber 133 provided in the optical unit 130 is bent or disconnected. Since it is relatively more vulnerable, the optical unit 130 may be disposed in the center of the photoelectric composite cable 100, and the power unit 110 may be disposed on the outer circumferential surface of the protective layer after wrapping the outside with a protective layer 140. have.

In addition, the cable core 105 may further include a filler 120 filling a gap between the plurality of power units 110 or the optical units 130.

Since the power unit 110 has a circular shape, a gap or gap occurs between neighboring power units 110. In this configuration, since the entire appearance of the photoelectric composite cable 100 cannot be maintained in a circular shape, it is vulnerable to bending or impact acting from the outside. Accordingly, it may be configured to have a structure capable of withstanding an external impact or the like by filling the voids in the cable core 105 with the filler 120 and maintaining the outer shape of the filler 120 in a circular shape.

The outer skin layer 150 provided on the outermost part of the photoelectric composite cable 100 is a part forming the outer shape of the photoelectric composite cable 100, and the optical unit 130 and the power unit 110 included in the photoelectric composite cable 100 ) To protect.

The outer skin layer 150 is in contact with the cable core 105, the nonwoven tape 151 surrounding the outer circumference of the cable core 105, and the cable core 105 in a circular shape from the outside of the nonwoven tape 151 A metal protective layer 153 that surrounds and protects the cable core 105 from external impacts, and an outer jacket 155 surrounding the metal protective layer 153 may be included.

The nonwoven tape 151 is provided to surround the outer circumference of the cable core 105 at the outer circumference of the cable core 105, and be provided to surround the power unit 110 and the optical unit 130 in a circular shape. I can. The nonwoven tape 151 may be disposed in a form surrounding the optical unit and the power unit inside the compressed nonwoven fabric. The non-woven tape 151 may be formed in a manner in which a tape-shaped material is rolled horizontally or vertically.

The metal protective layer 153 may have a wrinkle formed in which a wrinkle mountain and a wrinkle valley are repeatedly formed so as to surround the cable core 105.

For example, the metal protection layer 153 may be formed of a metal pipe such as aluminum in a corrugated form in which corrugated peaks and corrugated valleys are repeatedly formed. Looking at the method of forming the metal protective layer 153, a plate-type metal plate is supplied together with the cable core 105 including the optical unit 130 and the power unit 110, and the metal plate is rolled. After molding so as to surround the outside of the cable core, both ends of the metal plate that abutted are joined by a method such as welding to form a pipe having a predetermined diameter. Subsequently, it may be configured by pressing at predetermined intervals to form corrugations to the outside of the pipe.

Meanwhile, the outer jacket 155 has flame retardant properties and may be made of an eco-friendly resin. For example, the outer jacket 155 may be made of polyethylene, polypropylene, or polyvinyl chloride (PVC).

The photoelectric composite cable 100 is connected to a jumper cable 50 connected to the RRU 40 after the power unit 110 and the optical unit 130 are branched from the terminal box 1200 described above.

Hereinafter, the terminal box for the photoelectric composite cable 1200 will be examined in detail.

3 shows the internal structure of the terminal box 1200 for a photoelectric composite cable according to the present invention in an open state, and FIG. 4 is a door 1230 of the terminal box 1200 for a photoelectric composite cable shown in FIG. ) Shows a state in which the optical unit connection part 1600 is deployed forward in a state where the cover is opened.

The terminal box for a photoelectric composite cable 1200 according to the present invention is a terminal box for a photoelectric composite cable for branching at least one photoelectric composite cable 100 including a plurality of power units and a plurality of optical units into a plurality of jumper cables. The housing 1210 as set forth in 1200, wherein one surface is opened, an accommodation space is provided therein, and a door 1230 for selectively opening and closing the accommodation space is provided; A plurality of jumper connection units (1250) provided on the outer surface of the housing (1210), each having an optical terminal and a power terminal in order to detachably mount the jumper connector of the jumper cable (50); A power unit connection part to which a plurality of power units of the photoelectric composite cable introduced into the housing 1210 and a plurality of connection power units (see FIG. 5) connected to the power terminals of the jumper connection unit 1250 are connected ( 1500); A first connection optical unit 13a mounted in front of the power unit connection part 1500 and connected to the optical unit 130 of the photoelectric composite cable introduced into the housing 1210 and the optical terminal of the jumper connection unit 1250 , See FIG. 6) an optical unit connection part 1600 to which it is connected.

As shown in FIG. 3, the terminal box 1200 according to the present invention may be connected via a portion 10 consisting of a BBU and a PSU shown in FIG. 1 and a photoelectric composite cable 100 shown in FIG. have.

The terminal box 1200 according to the present invention is first installed in a base station tower, and then the photoelectric composite cable 100 is introduced into the terminal box 1200, and the optical unit 130 and the power unit 110 of the photoelectric composite cable 100 After branching from the terminal box 1200, power and data may be supplied to a plurality of RRUs by connecting to each of the jumper cables 50 mounted on the terminal box 1200.

Terminal box 1200 according to the present invention aims to improve the workability of the photoelectric composite cable mounting operation, branching operation and connection operation in a base station tower.

Accordingly, the terminal box 1200 according to the present invention includes an integrated system in which the photoelectric composite cable 100 and the terminal box 1200 are integrated, or a system for mounting the photoelectric composite cable 100 to the terminal box 1200 in a connector manner. Alternatively, after the terminal box 1200 is installed in the base station tower, the cable is pulled and introduced and fixed inside the terminal box 1200, and then the power unit 110 and the optical unit constituting each photoelectric composite cable 100 are divided. And a structure to connect.

In addition, workability can be improved by dividing or separating the space where the power unit is connected and branched and the space where the optical unit is connected and branched in the space inside the housing 1210 constituting the terminal box 1200 according to the present invention. By adopting the existing structure, the space inside the terminal box can be efficiently used and the size of the terminal box can be reduced.

As shown in FIG. 3, by providing an openable door 1230 constituting the terminal box 1200 according to the present invention, an internal accommodation space can be selectively opened.

The housing 1210 has a rectangular parallelepiped shape, the photoelectric composite cable is introduced through the lower surface of the housing 1210, and the jumper connection unit 1250 may also be provided on the lower surface of the housing 1210.

The photoelectric composite cable 100 introduced into the housing 1210 may be mounted on the housing 1210 through a cable holder 1400 mounted on the housing 1210. In addition, the photoelectric composite cable 100 introduced into the housing 1210 is compressed by the load support unit 1300 (see FIG. 5) to prevent the vertical slip phenomenon of the cable that may occur in the cable holder 1400. I can.

The photoelectric composite cable 100 introduced into the housing 1210 may be separated by a predetermined length so that it can be connected or branched in the housing 1210.

The terminal box 1200 according to the present invention provides a structure for separating the connection area of the power unit and the connection area of the optical unit in order to facilitate the connection operation in the accommodation space inside the housing 1210. In general, when a power unit or a communication unit (including an optical unit) is connected from a base station terminal box, space is simply divided and used as a connection area, thereby increasing the area and size of the terminal box 1200.

In addition, the optical unit, unlike the power unit, has a small diameter and requires a minimum radius of curvature, and thus requires a different handling from the power unit for power supply.

Accordingly, the terminal box 1200 according to the present invention divides the inner space of the housing 1210 back and forth, the rear space is used as a connection area of the power unit, and the front space is used as a connection area of the optical unit.

3 and 4, the power unit 110 of the photoelectric composite cable 100 introduced into the housing 1210 and a connection power unit connected to the power terminal of the jumper connection unit 1250 ( The power unit connection part 1500 to which 11) is connected may be provided on an inner surface of the accommodation space facing the door 1230 that shields the accommodation space.

In addition, a first connection optical unit connected to the optical unit 130 of the photoelectric composite cable introduced into the housing 1210 in front of the power unit connection unit 1500 and the optical terminal of the jumper connection unit 1250 (FIG. 6 An optical unit connection unit 1600 to which (see reference numeral 13a) is connected may be provided.

And, as shown in Figs. 3 and 4, the optical unit connection part 1600 is hinged to the inner side of the housing 1210 to be rotatably mounted so that the power unit connection part 1500 is exposed forward. I can. 3 and 4, the power unit connection part 1500 is exposed in a way that the optical unit connection part 1600 is rotated, but the other optical unit connection part 1600 is configured to be detachable or forward and backward. It is also possible how to do it.

Accordingly, when the power unit connection part 1500 requires the connection work of the power unit 110, the optical unit connection part 1600 is opened to expose the power unit connection part 1500 to improve workability.

The power unit connected from the power unit connection unit 1500 is connected to the connecting unit 1510 (refer to Fig. 5) constituting the power unit connection unit 1500, and then the jumber connection unit 1250 through the connection power unit 11 It can be connected to a power terminal (not shown).

The connection structure of the connection optical unit and the connection power unit 11 will be described later.

FIG. 5 shows an example of a connected state of the power unit and the connected power unit 11 in the power unit connection 1500 in the state in which the optical unit connection part 1600 shown in FIG. 4 is expanded forward, and FIG. 6 is An example of a state in which the cover of the optical unit connection part 1600 is removed while the door 1230 of the terminal box 1200 for the photoelectric composite cable shown in FIG.

First, a method of connecting the power unit from the power unit connection unit 1500 after installing the terminal box 1200 in the base station will be described with reference to FIG. 5.

Since the power unit connection part 1500 may be provided on the inner surface of the accommodation space facing the door 1230 that shields the accommodation space, the optical unit connection part 1600 is rotated or deployed in the forward state. Connection can be performed.

Specifically, the optical unit connection part 1600 includes an optical unit housing 1610, and the optical unit housing 1610 is hinged to the terminal box 1200 according to the present invention so that it can be rotatably mounted. have.

The terminal box according to the present invention has a configuration in which at least one photoelectric composite cable 100 is connected to a plurality of jumper cables, and a plurality of pairs of power units are provided in the photoelectric composite cable, but a pair of power units is provided for convenience of the city. It is shown assuming that the and a pair of connection power units 11 are connected.

The photoelectric composite cable is provided with a plurality of power units, and a pair of (+) pole and (-) pole power units 110 branched in the terminal box 1200 are respectively provided with a first power unit connection part 1500a and It is connected to the connection power unit 11 through the second power unit connection part 1500b.

Each of the first power unit connection part 1500a and the second power unit connection part 1500b includes a connecting part 1510 into which a conductor of the power unit is inserted. The connecting part may be configured in a connector method rather than a conductor insertion and fixing method.

As shown in FIG. 5, photoelectricity in a state in which the connecting part of the power unit connection part 1500 inside the terminal box 1200 according to the present invention is previously connected to each jumper connection unit 1250 and the connection power unit 11 With the composite cable 100 mounted on the housing 1210, the operator connects the pair of (+) and (-) pole power units 110 of the photoelectric composite cable to the first power unit connection part 1500a and the second power unit. The connection of the power unit may be completed by connecting to the connecting part 1510 of the power unit connection part 1500b. That is, the power unit 11 connected to the (+) and (-) poles connected to the first power unit connection unit 1500a and the second power unit connection unit 1500b of the terminal box 1200 is connected in advance to the base station. And a pair of (+) pole and (-) pole power units 110 branched by introducing the photoelectric composite cable 100 to the terminal box 1200 at the base station and the first power unit connection part 1500a The connection of the power unit 110 may be completed by connecting each of the connecting parts of the second power unit connection part 1500b.

In this case, for convenience of operation, the end of the photoelectric composite cable introduced into the terminal box 1200 is preferably installed in the base station in a state that is stripped to a predetermined length.

In addition, each power unit 110 and each connection power unit 11 of the photoelectric composite cable may be connected in a horizontal direction at the first power unit connection part 1500a and the second power unit connection part 1500b. .

The other end of the connection power unit 11 having one end connected to the first power unit connection unit 1500a and the second power unit connection unit 1500b is connected to the power terminal of each jumper connection unit 1250, and each jumper The connector of the jumper cable 50 may be detachably fastened to the connection unit 1250.

A method of connecting the optical unit 130 and the connecting optical unit 13 will be described with reference to FIG. 6.

6 shows a state in which the optical unit housing 1610 cover is removed while the optical unit connector 1600 is disposed in a correct position so that it can be accommodated in the housing 1210 of the terminal box 1200 without being deployed or rotated. do.

The optical unit connection unit 1600 may have an optical unit housing 1610 separately from the power unit connection unit 1500 described above, and the optical unit housing 1610 constituting the optical unit connection unit 1600 is a detachable cover. It can be provided.

In addition, a connecting optical unit for connecting the optical unit 130 of the photoelectric composite cable to the jumper connecting unit 1250 in the terminal box 1200 includes a first connecting optical unit 13a and a second connecting optical unit. (13b) is provided.

Specifically, as shown in FIG. 6, an optical connector to which the first connecting optical unit 13a and the optical unit 130 of the photoelectric composite cable can be connected is provided on the outer surface of the optical unit housing 1610. In the optical unit housing 1610, a second connection optical unit 13b for connecting a connector to which the first connection optical unit 13a and the optical unit 130 of the photoelectric composite cable are connected is provided. I can.

Specifically, the optical unit connection unit 1600 constituting the terminal box 1200 according to the present invention is mounted to be rotated, rotated, or deployed in front of the power unit connection unit 1500, and introduced into the housing 1210. The optical unit 130 of the photoelectric composite cable 100 and the first connection optical unit 13a connected to the optical terminal of the jumper connection unit 1250 may be respectively connected. Therefore, the optical unit 130 of the photoelectric composite cable introduced into the housing 1210 constituting the terminal box 1200 according to the present invention is sequentially connected to the optical unit connection part 1600 and the first connecting optical unit 13a. ) May be connected to the optical terminal of the jumper connection unit 1250. That is, when the photoelectric composite cable 100 is mounted on the terminal box 1200 according to the present invention installed in the base station tower and the optical unit 130 of the photoelectric composite cable is connected to the optical unit connection unit 1600, the optical unit connection unit ( 1600) and the optical terminal of the jumper connection unit 1250 through the first connection optical unit 13a.

The first connecting optical unit (13a) is configured to connect the optical terminal of the jumper connecting unit (1250) and the optical unit connecting unit (1600), and the second connecting optical unit (13b) is connected to the optical unit connecting unit (1600). This is a configuration for connecting the optical unit 130 branched from the connected photoelectric composite cable and the first connection optical unit 13a inside the optical unit connection part 1600.

That is, the optical unit connection part 1600 may be provided in a state in which the optical unit housing 1610 is provided and the second connection optical unit 13b is connected therein. Further, further connection of the first connection optical unit 13a may be performed in advance according to the number of jumper cables 50 that need to be connected.

Therefore, the terminal box 1200 in which the internal connection of the optical unit connection part 1600 through the second connection optical unit 13b and the connection of the jumper connection unit 1250 by the first connection optical unit 13a is completed. The optical connection work is simply completed by attaching the cable to the terminal box 1200 while it is installed in the base station and then connecting the optical unit to the connector of the optical unit housing 1610 constituting the optical unit connection part 1600. can do.

In addition, in order to cope with the recent increase in the amount of communication, the optical unit 130 of the photoelectric composite cable may be provided with a plurality of optical fibers, and the optical connector provided in the optical unit connection part 1600 may be composed of an MPO type optical connector. have.

According to the recent explosion of mobile traffic, the optical unit is configured with a multi-core optical fiber in response to the communication volume and communication channel covered by one base station, and an optical connector connected to the optical unit is simply connected to one optical fiber. It is configured with an MPO optical connector instead of the MPO to cope with the increase in communication capacity, and can improve workability by performing a one-to-many optical connection.

Therefore, as shown in FIG. 6, when the optical connector provided at the end of the optical unit 130 of the photoelectric composite cable connected to the optical unit connection part 1600 is an MPO optical connector, the optical unit of one photoelectric composite cable Each of the second connection optical unit 13b and the first connection optical unit 13a connected to the 130 may be formed of a plurality.

6, the first connection optical unit 13a and the optical unit 130 of the photoelectric composite cable are holders along the inner edge of the housing 1210 to secure a minimum radius of curvature for protecting the internal optical fiber. (1214) It can be arranged while supported on the back.

That is, as shown in FIG. 6, the optical connector provided in the optical unit housing 1610 is used in the optical unit housing 1610 for a dressing treatment and for standardizing the length of the second connecting optical unit 13b. (1610) It may be provided on both sides with an inclined upward direction, and if the power unit connection part 1500 is disposed so as not to bypass it, bending of the optical fiber may occur, so that the power unit connection part 1500 is bypassed. It is disposed along the inner edge of the housing 1210 so as to prevent damage to the optical fiber.

With this configuration, the positions of the optical unit connection unit 1600 and the power unit connection unit 1500 for connecting the optical unit and the power unit are dualized in the thickness direction of the housing 1210 and the optical unit connection unit 1600 disposed in front Is rotatably mounted to improve the workability of the connection work between the optical unit and the power unit, and in the base station connection work, the operator connects the MPO connector provided at the end of the multi-core optical unit of the photoelectric composite cable to the optical unit connection unit 1600. The optical connection can be completed by attaching it to the corresponding connector, and the optical unit connection part 1600 for connecting the optical unit in the terminal box 1200 is configured in the form of a housing 1210 in which optical connection is performed. It is possible to simplify the operation of the base station operation.

50: jumper cable
100: photoelectric composite cable
1200: Terminal box for photoelectric composite cable
1500: power unit connection
1600: optical unit connection part

Claims (11)

In the terminal box for a photoelectric composite cable for branching at least one photoelectric composite cable including a plurality of power units and a plurality of optical units into a plurality of jumper cables,
A housing that is open on one side, has an accommodation space therein, and has a door for selectively opening and closing the accommodation space;
A plurality of jumper connection units provided on the outer surface of the housing and each having an optical terminal and a power terminal to detachably mount the jumper connector of the jumper cable;
A power unit connection part to which a plurality of power units of the photoelectric composite cable introduced into the housing and a plurality of connection power units connected to power terminals of the jumper connection unit are connected;
An optical unit connection part mounted in front of the power unit connection part and to which an optical unit of the photoelectric composite cable introduced into the housing and a first connection optical unit connected to an optical terminal of the jumper connection unit are connected; Terminal box. The method of claim 1,
The power unit connection part is a terminal box for a photoelectric composite cable, characterized in that provided on the inner surface of the receiving space facing the door shielding the receiving space. The method of claim 1,
The optical unit connection part is hinge-coupled to the inner side of the housing and rotates so as to be exposed to the front of the power unit connection part. The method of claim 1,
The optical unit connection unit has an optical unit housing, and a second connection optical unit connecting the first connection optical unit and the optical unit of the photoelectric composite cable is provided inside the optical unit housing. Terminal box. The method of claim 4,
A terminal box for a photoelectric composite cable, characterized in that the first connecting optical unit and the optical unit of the photoelectric composite cable are connected to an outer surface of the optical unit housing by an optical connector. The method of claim 4,
The terminal box for a photoelectric composite cable, characterized in that the second connection optical unit and the first connection optical unit are connected to an outer surface of the optical unit housing by an optical connector. The method of claim 5 and 6,
The optical connector is a terminal box for a photoelectric composite cable, characterized in that the MPO (Multiple-fiber Push-On) type optical connector. The method of claim 5,
The first connection optical unit and the optical unit of the photoelectric composite cable are connected to the optical connector and then bypass around the power unit connection part and are disposed along the inner edge of the housing. The method of claim 1,
The housing has a rectangular parallelepiped shape, the photoelectric composite cable is introduced through a lower surface of the housing, and a jumper connection unit to which the jumper cable is connected is also provided on the lower surface of the housing. The method of claim 9,
In the power unit connection part, the power unit of the photoelectric composite cable and the connection power unit are connected in a horizontal direction. A terminal box for a photoelectric composite cable according to any one of claims 1 to 10 installed in a base station tower;
A plurality of optical units provided in the center and connected between a baseband unit (BBU) located outside the base station tower and the terminal box, and a power supply unit (PSU) and the terminal arranged around the optical unit and located outside the base station tower At least one photoelectric composite cable including a plurality of power units connected between the boxes and introduced through a lower surface of the terminal box; And,
A plurality of jumper cables connected between the terminal box and a remote RF unit (RRU) installed in the base station tower, including one or more optical units and one or more power units, and connected to a jumper connection unit on the outer surface of the housing of the terminal box; Photoelectric composite terminal box system comprising a.

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