KR20190086163A - Terminal Box System For Optical Fiber and Power Line Composite Cable - Google Patents

Abstract

The present invention relates to a terminal box system for a photoelectric composite cable in which the workability of the connection operation between the photoelectric composite cable and a jumper cable in a base station is improved. The terminal box system for a photoelectric composite cable includes a terminal box, a connection cable, and a plurality of jumper connection units.

Description

[0001] The present invention relates to a terminal box system for a photoelectric composite cable,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal box system for a photoelectric hybrid cable, and more particularly, to a terminal box system for a photoelectric hybrid cable having improved workability in connection work between a terminal box and a photoelectric composite cable in a base station.

In the conventional mobile communication, a communication signal is transmitted from the base station 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. Also, a radio signal transmitted from a user's portable terminal is received by the base station antenna, and the received signal is amplified through a TMA (Tower Mount Amplifier) and transmitted to the BTS.

At this time, the BTS, the TMA, and the antenna of the base station are connected to the coaxial feeder line, but the signal loss is large as the length of the coaxial feeder cable increases. When the antenna is installed in a tower having a height of several tens of meters, a loss increases in a coaxial feeder line connecting a base station on the ground and the antenna, and a signal provided by the base station due to signal loss of the coaxial feeder is required To attenuate the signal without reaching the intensity of the signal, a Tower Mounted Amplifier (TMA) is installed to compensate and amplify the signal.

However, since the TMA consumes a relatively large amount of power in order to amplify the signal, the TMA requires a large amount of maintenance in terms of the overall system, which leads to a problem of inefficiency.

Meanwhile, base station facilities are evolving as the evolution of FTTx (Fiber to the X) and the miniaturization of repeaters. Among these, the optical unit is characterized by a very small signal attenuation according to the cable length as compared with the coaxial cable. RRH (Remote Radio Head), which is a technology to convert optical signals into RF signals capable of emitting optical signals immediately before the antenna, has been introduced.

The remote radio head (RRH) is a complement to the inefficient disadvantages of power consumption and maintenance of a mobile communication base station using a conventional TMA. The RRH separates the RRU (Remote RF Unit) from the conventional BTS and places it remotely underneath the antenna of the base station tower.

The remaining parts of the existing BTS in which the RRU is separated in the RRH, that is, the BBU (Baseband Unit) and the PSU (Power Supply Unit) are connected to the RRU by a photoelectric hybrid cable including an optical unit and a power unit with little attenuation per length , A communication signal from a Baseband Unit (BBU) and a Power Supply Unit (PSU) is supplied to an RRU (Remote RF Unit) through an optical unit constituting the photoelectric hybrid cable, and the electric power is supplied to the RRU (Remote RF Unit).

Since the RRU (Remote RF Unit) can be installed just below the base station antenna at the top of the base station Tower, the length of the coaxial feeder for supplying the RF signal converted by the RRU (Remote RF Unit) to the antenna is minimized, Since the attenuation of the RF signal generated when the RF signal is transmitted through the line does not matter, the attenuation amount of the signal up to just before the radiation is minimized, and the necessity of the TMA using the conventional power consumption is eliminated. This technical feature has become a feature of the RRH in terms of the maintenance of the base station.

In this RRH system, BBU (Baseband Unit), PSU (Power Supply Unit) and RRU (Remote RF Unit) are connected via a terminal box for photoelectric hybrid cable.

In other words, since the photoelectric composite cable is provided with a single optical unit and a power unit, a BBU (Baseband Unit), a PSU (Power Supply Unit) and a plurality of RRUs (Remote RF Unit) In a terminal box for a photoelectric hybrid cable, a method in which a power unit and an optical unit are branched and connected to a plurality of RRUs may be used.

When a single photoelectric composite cable is branched by a plurality of jumper cables, a plurality of power units and optical units constituting a photoelectric composite cable in a cable terminal box and a power unit and an optical unit constituting each jumper cable are housed in a terminal box To be connected using a connector or the like.

As the number of base station antennas increases depending on the communication company or the communication method, the number of RRUs or terminal boxes increases accordingly. Therefore, even if the number of photoelectric hybrid cables connected to one terminal box is small, the number of RRUs may be large. Therefore, the base station management worker needs to take a lot of time and effort because he / she must perform the connection work of disconnecting the photoelectric hybrid cable and connecting the power unit and the optical unit in the terminal box to the power unit of the jumper cable and the optical unit.

Therefore, it is required to improve the connection work of the terminal box connecting the photoelectric composite cable and the jumper cable in a rapidly changing environment of a communication company or a communication method.

Conventionally, a connection operation of a terminal box connecting a photoelectric composite cable and a jumper cable has been performed in the base station.

In this case, it is not easy to raise the photoelectric composite cable to the base station antenna located at a height of several tens of meters while the terminal box is mounted on the end of the photoelectric composite cable. In the process of pulling up the terminal box and the photoelectric composite cable with the base station antenna, It is necessary to secure a sufficient passage for the terminal box to pass through, and there is a possibility that the bulky terminal box may be damaged during the transportation.

On the other hand, when the terminal box is installed on the tower and the photoelectric composite cable is pulled up and connected to the terminal box, it is not easy to connect the photoelectric composite cable to the terminal box due to the own weight of the photoelectric composite cable. It is very difficult to connect the connection terminal and the connection terminal of the terminal box exactly. Therefore, it is almost impossible to connect the photoelectric composite cable to the terminal box while one worker holds the load of the photoelectric composite cable alone.

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

In order to solve the above problems, the present invention provides a terminal box system for a photoelectric hybrid cable for branching at least one photoelectric composite cable including a plurality of electric power units and a plurality of optical units to a plurality of jumper cables, A box-shaped terminal box having a longer length; A connection cable provided at a longitudinal end of the terminal box, the connection cable being detachably connected to the photoelectric composite cable and being capable of being bent; And a plurality of jumper connection units spaced along the longitudinal direction of the terminal box and to which the jumper cables are detachably connected.

In addition, the connection cable may be connected at one end to the lower end of the terminal box, and at the other end, a cable connection unit for connection of the photoelectric hybrid cable.

In this case, the connecting cable may be configured to include a bellows-type outer case capable of angular bending of 90 degrees or more.

The connecting cable may be partially inserted into the terminal box or may be shrunk so that the length of the connecting cable connected to the terminal box can be adjusted.

In addition, a hanger unit for supporting a cable connector unit of the photoelectric hybrid cable may be provided at the end of the photoelectric hybrid cable, and a hanger unit for supporting the cable connector unit of the photoelectric hybrid cable in the terminal box.

In this case, the hanger unit may include a support bar connected to the terminal box and extended by a predetermined length, and a hanger provided at an end of the support bar to support the cable connector unit of the photoelectric hybrid cable.

The support bar may be slidably mounted on the terminal box so that the length of the support bar can be adjusted.

Here, the terminal box may further include a holder provided on the terminal box for fixing the connection cable by bending it upward.

According to another aspect of the present invention, there is provided a base station system in a remote radio head (RRH) system. The base station includes a baseband unit and a power supply unit, To a plurality of jumper cables respectively connected to a plurality of remote RF units (RRUs), the terminal box system comprising: a terminal box; At least one cable connection unit provided in the terminal box so that a connection direction or a connection position for connecting the cable connector unit to the cable connector unit is adjustable at an end of the photoelectric hybrid cable; And a plurality of jumper connection units provided in the terminal box for detachably connecting the plurality of jumper cables.

Here, a connection cable capable of bending is provided at a lower end of the terminal box, and the cable connection unit may be provided at an end of the connection cable.

The connecting cable may have a bellows-type outer sheath.

According to the terminal box system for a photoelectric hybrid cable according to the present invention, in the process of connecting the BBU or the PSU constituting the RRH system and the RRU through the terminal box for the photoelectric hybrid cable, Workability and accuracy can be improved.

1 is a block diagram of a base station equipped with a terminal box system for a photoelectric hybrid cable according to an embodiment of the present invention.
2 shows a cross-sectional view of a photoelectric composite cable.
3 is a perspective view illustrating a terminal box system for a photoelectric hybrid cable according to an embodiment of the present invention.
Fig. 4 shows a sectional view showing the internal configuration of the terminal box in Fig. 3. Fig.
5 illustrates a process of connecting a photoelectric composite cable to a terminal box using a terminal box system for a photoelectric composite cable according to the present invention.

Hereinafter, preferred 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 but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification.

1 is a block diagram of a base station 10 equipped with a terminal box system 1000 for a photoelectric hybrid cable according to an embodiment of the present invention.

Referring to FIG. 1, the base station system 1 of the RRH scheme separates the RRU 40 (Remote RF Unit) from the base station of the conventional BTS system and places it under the antenna 20 of the base station tower and controls it remotely.

The remaining part 10 of the base station of the existing BTS system in which the RRU 40 is separated in the base station system 1 of the RRH scheme, that is, the baseband unit (BBU) and the power supply unit (PSU) And is connected to a photoelectric hybrid cable 100 including a light unit and a power unit which are almost not used.

In the BBU (Baseband Unit) and PSU (Power Supply Unit), the communication signal is supplied to the RRU 40 through the optical unit constituting the photoelectric hybrid cable, and the power is supplied to the RRU 40 through the power unit constituting the photoelectric hybrid cable. .

The length of the coaxial line 30 for supplying a signal converted into an RF signal from the RRU 40 to the antenna 20 can be reduced because the RRU 40 can be installed just below the base station antenna 20 at the top of the base station Tower, The attenuation of the signal until just before the radiation is minimized and the TMA which used the conventional power consumption is not required since the RF signal attenuation that may occur when the RF signal is transmitted through the coaxial line 30 is minimized . This technical feature has become a feature of the RRH in terms of the maintenance of the base station.

As shown in FIG. 1, the base station system 1 of the RRH scheme includes a baseband unit (BBU), a power supply unit (PSU), and a remote RF unit (RRU) Lt; / RTI >

That is, the photoelectric hybrid cable 100 includes a part 10 composed of a BBU (Baseband Unit) and a PSU (Power Supply Unit) and various types A plurality of RRUs (Remote RF Unit) of the photoelectric hybrid cable can not be connected directly, and each optical unit and power unit constituting the photoelectric hybrid cable 100 are branched at the terminal box 1200 for the photoelectric hybrid cable, And connected via a jumper cable 50, respectively.

Recently, various kinds of portable terminals have been diversified, new and old terminals having different communication systems have been coexisted and communication towers have been installed. As a result of sharing an installation tower of the antenna 20 constituting the RRH between mobile communication providers, And RRUs, which make up dozens of RRHs, have been installed, making the tower a limited space for installation and increasing the burden on the installation.

Therefore, when the operator works through the terminal box, the connection work of connecting the optical unit and the power unit constituting the photoelectric hybrid cable 100 and the optical unit constituting the jumper cable 50 to the electric power unit requires considerable working time Demand.

In order to reduce the work time, a method of raising the photoelectric composite cable to the base station antenna is proposed, in which the terminal box is integrally mounted on the end of the photoelectric composite cable, though it is not shown in the drawings. However, it is not easy to raise the photoelectric hybrid cable to the base station antenna located at a height of tens of meters in a state where the terminal box is integrally mounted at the end of the photoelectric composite cable. In the process of raising the terminal box and the photoelectric composite cable with the base station antenna, It is necessary to secure a sufficient passage for the box to pass through, and there is a possibility that the bulky terminal box may be damaged during the transportation.

In addition, when the terminal box is installed on the tower and the photoelectric composite cable is pulled up and connected to the terminal box, it is not easy to connect the photoelectric composite cable to the terminal box due to the own weight of the photoelectric composite cable. Since the connection terminal and the connection terminal of the terminal box have to be precisely combined and combined, the connection operation is very difficult.

In other words, in order to connect the photoelectric composite cable to the terminal box, the connection terminal (not shown) of the photoelectric composite cable and the connection terminal (not shown) of the terminal box must be precisely combined. However, due to the weight of the photoelectric composite cable, it was virtually impossible for one operator to jointly connect the photoelectric composite cable and the terminal box in a state in which the photoelectric composite cable was supported by the operator alone. This reduces the work efficiency of the operator and thus increases the time and cost of connecting the photoelectric composite cable to the terminal box.

Accordingly, in the present invention, it is possible to easily connect the photoelectric hybrid cable 100 to the terminal box 1200 in a state where the terminal box system 1000 for a photoelectric hybrid cable with a terminal box 1200 is installed on a tower, And a terminal box system 1000 for a photoelectric hybrid cable in which connection work can be performed even by a single worker.

Hereinafter, a structure of a photoelectric composite cable will be described, and then a terminal box system for a photoelectric composite cable according to the present invention will be described in detail.

Figure 2 shows one embodiment of a photoelectric composite cable.

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

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

A plurality of optical units 130 may be arranged in the longitudinal direction of the photoelectric hybrid cable at the center of the photoelectric composite cable 100.

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

When the optical unit 130 and the power unit 110 are compared with each other, the optical unit 130 is smaller in diameter than the power unit 110 and the optical fiber 133 provided in the optical unit 130 is bent or broken The optical unit 130 may be disposed at the center of the photoelectric hybrid cable 100 and the power unit 110 may be disposed on the outer circumferential surface of the protective layer 140 after the outside of the optical unit 130 is wrapped with the protective layer 140. [ have.

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

Since the power unit 110 has a circular shape, a gap or clearance is generated between neighboring power units. In such a configuration, the entire outer shape of the photoelectric composite cable 100 can not maintain its circular shape, and thus it is vulnerable to warping or impact acting on the outside. Accordingly, the voids in the cable core 105 can be filled with the filler 120, and the outer shape of the filler 120 can be maintained in a circular shape to have a structure capable of withstanding external impacts.

The outer cover layer 150 provided at the outermost portion of the photoelectric hybrid cable 100 forms the outer shape of the photoelectric composite cable 100 and includes an optical unit 130 and a power unit 110 ).

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

The nonwoven tape 151 is provided to surround the outer periphery of the cable core 105 at the outer periphery of the cable core 105 and is provided to surround the power unit 110 and the optical unit 130 in a circular shape . The nonwoven fabric tape 151 may be disposed in a form of wrapping the optical unit and the power unit therein as a compressed nonwoven fabric. The nonwoven fabric tape 151 may be formed in such a manner that the tape-shaped material is horizontally or vertically extruded.

The metal protection layer 153 may be formed with wrinkles in which wrinkles and wrinkles are repeatedly formed to surround the cable core 105.

For example, the metal protection layer 153 may be formed of a metal pipe such as aluminum or the like in a corrugated form in which a corrugation and a corrugation are repeatedly formed. A method of forming the metal protection layer 153 will now be described with reference to a method of supplying a plate type metal plate together with a cable core 105 including an optical unit 130 and a power unit 110, And the end portions of the metal plate are joined to each other by welding or the like to form a pipe having a predetermined diameter. And then pressed at predetermined intervals so as to form a wrinkle on the outside of the pipe.

Meanwhile, the outer jacket 155 may be made of a resin having a flame retardant property and being environment-friendly. For example, the outer jacket 155 may be made of polyethylene, polypropylene, or polyvinyl chloride (PVC).

The optical unit 130 may include any type of optical fiber including an optical fiber for transmitting an optical signal. For example, the optical unit 130 may include at least one optical fiber 133 and a tube 135 < / RTI > The tube 135 may comprise, for example, polybutylene terephthalate (PBT), polypropylene, polyethylene or polyvinyl chloride. In addition, the tube 135 may be filled with a filler 137 such as jelly or waterproof. For example, filled with jelly, or filled with a tensile material 135 such as an aramid yarn. The tensile material 135 is excellent in tensile force and is flexible, so that the cable can be stably installed.

The optical unit 130 may be formed in various forms such as a tight buffer type or a loose tube type.

Each power unit 110 includes a conductor 113 and an insulator 115 surrounding the conductor 113. The power unit 110 may have a shape conforming to a standard used for general power, and the plurality of conductors 113 may be twisted together. The conductor 113 may be formed of a metal such as copper or aluminum. The insulator 115 may be formed of a polymer resin such as polyethylene, polypropylene, or polyvinyl chloride.

The photoelectric hybrid cable 100 includes a power line 110 constituting the jumper cable 50 connected to the remote wireless unit 40 after the power unit 110 and the optical unit 130 are branched in the terminal box 1200, Respectively.

FIG. 3 is a perspective view illustrating a terminal box system 1000 for a photoelectric hybrid cable according to the present invention, and FIG. 4 is a plan view illustrating an internal configuration of the terminal box 1200 in FIG.

3 and 4, the present invention is a terminal box system for a photoelectric hybrid cable for branching at least one photoelectric composite cable including a plurality of power units and a plurality of optical units to a plurality of jumper cables, And a box-shaped terminal box 1200 having a length longer than the thickness; A connection cable 1400 provided at a longitudinal end of the terminal box 1200 and capable of bending the photoelectric composite cable detachably connected to the terminal box 1200 and spaced along the longitudinal direction of the terminal box 1200, And a plurality of jumper connecting units 1250 detachably connected to each other.

The terminal box system 1000 for a photoelectric hybrid cable according to the present invention shown in FIGS. 1 and 3 is detachably connected to the photoelectric hybrid cable 100 to the terminal box 1200, And a connection cable 1400 that can be adjusted. The terminal box system 1000 for a photoelectric hybrid cable according to the present invention may include a hanger unit 1300 for supporting the photoelectric hybrid cable 100.

Specifically, a cable connector unit 1100 is provided at an end of the photoelectric hybrid cable 100, and a hanger unit 1300 for supporting the cable connector unit of the photoelectric hybrid cable may be provided in the terminal box.

Since the terminal box 1200 is mostly installed at a high place such as a base station and the photoelectric hybrid cable is connected to a ground base band unit (BBU) and a power supply unit, 1400 may be connected at the bottom of the terminal box 1200. [

Accordingly, the worker places the cable connector unit 1100 of the photoelectric hybrid cable 100 on the hanger unit 1300 and holds the connection cable 1400 in a state of supporting the load of the photoelectric hybrid cable 100 It can be connected to the cable connector unit 1100 of the photoelectric hybrid cable 100, so that the work efficiency can be improved, and furthermore, a single operation can be achieved.

In addition, since the connection cable 1400 is installed in the lower portion of the terminal box 1200, moisture penetration into the connection cable 1400 or the terminal box 1200 can be prevented, 100 can be minimized.

1 and 3, the connection cable 1400 constituting the terminal box system for a photoelectric hybrid cable according to the present invention has one end connected to the lower end of the terminal box 1200, A cable connection unit 1430 for connecting the composite cable 100 is provided and the cable connection unit 1430 provided to the connection cable 1400 and the cable connector unit 1100 of the photoelectric composite cable 100 are connected to each other, So that the connection position and the connection direction of the terminal can be changed.

The connection cable 1400 may be configured in the form of a flexible cable so that the connection position and the connection direction of the cable connection unit 1430 and the cable connector unit 1100 can be changed.

Since the photoelectric hybrid cable 100 is connected to a base station or the like, it is connected from the ground and has a long length and a large weight. Accordingly, in the case of performing the operation of connecting the photoelectric hybrid cable 100 and the connection cable 1400, when the photoelectric hybrid cable 100 is supported on a hanger unit or the like, It is difficult to change the position of the connection cable 1400 to the cable connector unit 1100 of the photoelectric hybrid cable 100 of the cable connection unit 1430 of the connection cable, Or, adjustment of the connection position may be necessary. At this time, if the connection cable 1400 is composed of a flexible and not rigid cable and the height thereof is fixed, when the connection cable 1400 is connected to the photoelectric hybrid cable 100 It may be difficult to precisely connect the cable connection unit 1430 of the connection cable 1400 and the cable connector unit 1100 of the photoelectric hybrid cable 100.

Accordingly, the connection cable 1400 may extend from the lower portion of the terminal box 1200, and may be formed of a flexible and flexible cable.

Specifically, the connection cable 1400 may include a cable body 1410 mounted at a lower portion of the terminal box 1200 and a cable connection unit 1430 provided at an end of the cable body 1410 .

The cable main body 1410 may be provided to be suspended from the terminal box 1200 by a predetermined length. The cable main body 1410 may be formed in a flexible and flexible form as described above. To this end, the outer surface of the cable body 1410 may be formed of a flexible material, or may be a corrugated corrugated tube or a bellows type as shown in the drawing.

When the cable main body 1410 is of a bellows type and can be expanded or contracted in the longitudinal direction, the connecting cable 1400 can adjust the connection length at the lower end of the terminal box 1200. That is, the connection cable 1400 can be contracted or elongated by a predetermined distance. When the connection cable 1400 is connected to the photoelectric hybrid cable 100, the connection cable 1400 can be contracted or extended Thereby enabling more accurate and easy connection.

Also, although not shown in the drawings, the connecting cable 1400 may be configured to be inserted into the terminal box 1200 by a predetermined length. That is, when the connection cable 1400 is connected to the photoelectric composite cable 100, the photoelectric composite cable 100 is not easily moved due to its own load, so that the connection cable 1400 is partially inserted into the terminal box Even if it is difficult to change the position of the photoelectric hybrid cable 100, the connection cable 1400 is inserted into the terminal box 1200 and then taken out of the terminal box 1200, It is possible to improve the operability of connecting the unit 1430 to the cable connector unit 1100 of the photoelectric hybrid cable 100. [

The connection cable 1400 may have a coupling part 1450 detachably connected to the cable connector unit 1100 of the photoelectric hybrid cable 100. A screw thread (not shown) may be formed on the inner circumferential surface of the coupling part 1450. An end of the photoelectric hybrid cable 100 is inserted into the coupling part 1450 and the coupling part 1450 is rotated And is coupled to the thread 1130 formed at the end of the cable connector unit 1100 of the photoelectric composite cable 100. This will be described in detail later.

3 and 4, an optical connection unit 6 (not shown) is connected to the optical unit 130 and the power unit 110 of the photoelectric hybrid cable 100, And a power connection unit (2, 4).

As shown in FIG. 4, the power connection units (2, 4) include a plurality of power connection units, one end of which is connected to the cable connection unit 1430 through the cable main body 1410, To the power unit 110 of the photoelectric hybrid cable 100. [ The other end of the power connection unit (2,4) is connected to the jumper connection unit (1250). In this case, the power connection units (2,4) are connected to the jumper connection unit 1250 described above in pairs inside the terminal box 1200, respectively.

The optical connection unit 6 is also constituted by a plurality of cables and one end of the optical connection unit 6 is connected to the cable connection unit 1430 through the cable main body 1410, And is connected to the optical unit 130 of the cable 100. The other end of the optical connecting unit 6 is connected to the jumper connecting unit 1250.

In the present embodiment, the optical connection units 6 are branched into four and connected to the above-described jumper connection unit 1250, respectively. The number of branching of the optical connection unit 6 can be appropriately modified in the base station system of the RRH system according to the type of portable terminal, the communication generation, the mobile communication service provider, and the like.

On the other hand, the cables constituting the optical connecting unit 6 and the power connecting units 2, 4 described above are formed relatively thin and flexible, and the cable main body 1410 is subjected to an external force such as twisting or warping It can be configured so as not to cause disconnection or breakage.

Further, when the optical connecting unit 6 and the power connecting unit 2,4 are respectively branched to the jumper connecting unit 1250 as described above, the plurality of optical connecting units 6 and the power connecting unit 2 , 4) may be provided on the inner side of the terminal box (1200).

For example, the guide means may include a guide body 1230 extending in the longitudinal direction of the terminal box 1200 from the inside of the terminal box 1200, and a plurality of jumper connecting units 1250 And a plurality of guide bars 1232 extending toward the guide bars 1232. [

4, the plurality of optical connection units 6 and the power connection units 2,4 extend from the connection cable 1400 at the lower side to the upper side in the terminal box 1200, And is disposed to face the plurality of jumper connecting units 1250 along the guide bar 1232. [ Due to the configuration of the guide bar 1232, the plurality of optical connection units 6 and the power connection units 2 and 4 can be connected to the connection target jumper connection unit 1250 without being tangled with each other.

The jumper connecting unit 1250 is provided in the terminal box 1200 and is disposed at a side of the terminal box 1200, that is, in a longitudinal direction of the terminal box 1200 . The number of the jumper connection units 1250 may be determined depending on the number of RRUs connected to the terminal box 1200 and the jumper cable 50 in the RRH system. Can be determined. In the drawing, four jumper connecting units 1250 are shown on the side of the terminal box 1200, but the present invention is not limited thereto.

The jumper connecting unit 1250 may be mounted on the terminal box 1200 so as to be inclined downward to prevent moisture infiltration or the like.

For example, if the jumper connecting unit 1250 is connected upward, it is advantageous to connect a jumper cable or the like. However, since the terminal box 1200 is mostly installed outdoors, The terminal box 1200 is mounted on the terminal box 1200 so as to be inclined downward in order to prevent moisture from penetrating into the terminal box 1200. In order to prevent the water from penetrating into the terminal box 1200, 1250) The mounting surfaces are preferably configured in a stepped or sawed manner.

In this case, the rainwater or the like that has fallen to the upper portion of the terminal box 1200 flows downward along the inclined portion 1201 of the terminal box 1200, so that moisture or the like penetrates into the end portion of the jumper connection unit 1250 As much as possible.

The terminal box system 1000 for a photoelectric hybrid cable according to the present invention includes a hanger unit 1000 capable of supporting an end portion of the photoelectric hybrid cable 100 to connect the photoelectric hybrid cable 100 to the connection cable 1400, (1300).

That is, when the operator connects the photoelectric composite cable 100 to the connection cable 1400, the end of the photoelectric composite cable 100, which is relatively heavy, is mounted on the hanger unit 1300, The connection cable 1400 can be connected to the photoelectric hybrid cable 100 by adjusting the connection cable 1400. In this case, it is possible to increase the efficiency of the connection operation, and conventionally, it is possible to work by one operator in the connection work required for two or more operators who normally operate the connection parts of the terminal box and the operator for supporting the photoelectric composite cable So that the operation speed and cost can be remarkably reduced.

Specifically, the hanger unit 1300 includes a support bar 1310 connected to the terminal box 1200 and extending by a predetermined length, and a support bar 1310 provided at an end of the support bar 1310, And a hanger 1330 for supporting the cable connector unit 1110. [

The support bar 1310 is connected to the terminal box 1200 and is preferably connected to the terminal box 1200 so that the connection cable 1400 extends or is oriented in the same direction as the longitudinal direction of the terminal box 1200 . That is, when the connection cable 1400 is connected to the lower portion of the terminal box 1200, the support bar 1310 may be connected to the lower portion of the terminal box 1200.

A hanger 1330 may be provided at the end of the support bar 1310. The hanger 1330 is provided at an end of the support bar 1310 and supports the photoelectric hybrid cable 100 when the photoelectric hybrid cable 100 is connected to the connection cable 1400 .

Specifically, the hanger 1330 may extend vertically at an end of the supporting bar 1310. 3, the photoelectric hybrid cable 100 is omitted. Therefore, the cable connecting unit 1430 of the connection cable 1400 is shown in a state in which the cable connecting unit 1430 is partially passed through the hanger 1330.

For example, the hanger 1330 may be provided with a pair, and the end of the photoelectric hybrid cable 100 may be interposed between the pair of hanger 1330. In this case, a cable flange 1140 (see FIG. 5) may be formed at the end of the photoelectric hybrid cable 100 so as to be mounted on the hanger 1330.

The cable flange 1140 is mounted on the hanger 1330 so that the load of the photoelectric hybrid cable 100 can be supported on the hanger 1330. This will be described in detail later with reference to FIG.

When the terminal box 1200 is moved in the case where the support bar 1310 is extended from the terminal box 1200 as described above, It may cause a great inconvenience when moving to the base station.

This is because the support bar 1310 protrudes from the terminal box 1200. In this case, damage or breakage of the support bar 1310 may occur during movement to move the terminal box 1200.

Therefore, in order to solve such a problem, the support bar may be slidably mounted on the terminal box so that the extension length of the support box can be adjusted.

To this end, the support bar 1310 may be vertically movably connected to the terminal box 1200. For example, a guide groove 1312 may be formed in the support bar 1310 and a guide protrusion (not shown) may be inserted into the guide groove 1312 on one side of the terminal box 1200 . In this case, the support bar 1310 can move up and down along the guide protrusion.

Therefore, when the terminal box 1200 is moved, the support bar 1310 is raised to minimize the length of the support bar 1310 drawn from the terminal box 1200, Thereby preventing breakage of the bar 1310. When the photoelectric hybrid cable 100 and the connection cable 1400 are connected to each other, the support bar 1310 is moved downward to be drawn to a predetermined length in the terminal box 1200 to support the photoelectric composite cable Can be configured.

Meanwhile, when the photoelectric hybrid cable 100 is connected to the connection cable 1400 as described above, the end portion of the photoelectric hybrid cable 100, which is relatively heavy, is mounted on the hanger unit 1300 do. In this case, when the connection cable 1400 is held down, the photoelectric hybrid cable 100 and the connection cable 1400 may be connected to each other when the photoelectric hybrid cable 100 is mounted on the hanger unit 1300. [ May be generated.

Accordingly, the terminal box system 1000 for a photoelectric hybrid cable according to the present embodiment can be used for temporarily holding the connection cable 1400 when the photoelectric hybrid cable 100 is mounted on the hanger unit 1300 And further comprising means.

Specifically, a holder 1500 for fixing the connection cable 1400 to the terminal box 1200 may be provided.

The holder 1500 may be provided on one side of the terminal box 1200 and may be provided on one side of the terminal box 1200 as shown in the figure, for example.

In this case, the holder 1500 may be configured to receive the end of the connection cable 1400. Therefore, the connection cable 1400 can be fixed to the holder 1500 by bending the connection cable 1400 and placing the end of the connection cable 1400 inside the holder 1500.

At this time, the connection cable 1400 may be provided at its end with a connection flange 1440 for preventing the connection cable 1400 from being detached when the connection cable 1400 is fixed to the holder 1500. That is, when the end of the connection cable 1400 is mounted on the holder 1500, the connection flange 1440 is supported on the edge of the holder 1500 so that the connection cable 1400 is inserted into the holder 1500, As shown in FIG.

Therefore, the operator places the connection cable 1400 on the holder 1500 before the photoelectric hybrid cable 100 is supported on the hanger unit 1300, so that the connection cable 1400 and the photo- The connection of the photoelectric hybrid cable 100 and the connection cable 1400 can be easily performed by preventing the interference between the photoelectric hybrid cable 100 and the connection cable 1400.

5 is a view illustrating a process of connecting the photoelectric hybrid cable 100 to a connection cable 1400 in a terminal box system 1000 for a photoelectric hybrid cable according to the present invention.

Referring to FIG. 5A, a cable connector unit 1100 is detachably connected to the connection cable 1400 at an end of the photoelectric hybrid cable 100. The cable connector unit 1100 includes a connector body 1110 provided at an end of the photoelectric hybrid cable 100 and a connector body 1110 protruding from the end of the connector body 1110 along the outer periphery thereof, And a coupling part 1150 detachably connected to the cable connection unit 1430 of the connection cable 1400. [

The photoelectric hybrid cable 100 is branched from the optical unit 130 and the power unit 110 in the connector body 1110 and is connected to a connection terminal (not shown) of the coupling unit 1150. A screw thread 1130 may be formed on an end of the connector body 1110 and a screw thread 1130 may be formed on the inner side of the fastening portion 1450 of the connection cable 1400, May be formed. Therefore, the end of the connector body 1110 of the photoelectric hybrid cable 100 is inserted into the coupling part 1450 of the connection cable and the coupling part 1450 is rotated so as to be formed at the end of the photoelectric hybrid cable 100 Threaded portion 1130. [0060]

The connection structure of the photoelectric hybrid cable 100 and the connection cable 1400 is merely described as an example. The photoelectric hybrid cable 100 and the connection cable 1400 are not combined with each other in a thread coupling manner, A coupling method using a hook may be adopted. That is, the connection structure of the photoelectric hybrid cable 100 and the connection cable 1400 may be varied depending on various factors such as the weight of the photoelectric hybrid cable 100, the type of the connection cable 1400, Can be appropriately selected in consideration of the conditions.

The cable connection unit 1430 of the connection cable 1400 may have a connection terminal (not shown) connected to the connection terminal of the connection unit 1150. Accordingly, by connecting the coupling part 1150 of the photoelectric hybrid cable 100 to the cable connection unit 1430 of the connection cable 1400, the photoelectric composite cable 100 is connected to the terminal box 1200 You can connect.

Hereinafter, a connecting operation process of the operator will be described with reference to FIG.

The connection cable 1400 may be disposed down through the hanger 1330 by being lowered from the terminal box 1200 before connecting the photoelectric hybrid cable 100 as shown in FIG.

In this state, the operator bends the connection cable 1400 in the direction of the arrow and connects to the holder 1500 before connecting the photoelectric hybrid cable 100 to the connection cable 1400. The connection cable 1400 may be a flexible and flexible cable as described above, and may be fixed to the holder 1500 by bending the connection cable 1400.

In the embodiment shown in FIG. 5, the connection cable 1400 is illustrated as being 180 degrees bendable, but is preferably configured to be capable of angle bending at least 90 degrees.

In this case, the operator places the end of the connection cable 1400 on the holder 1500, and the connection flange 1440 of the connection cable 1400 is extended over the edge of the holder 1500, (1400) is fixed to the holder (1500). 5 (b) shows a state where the connection cable 1400 is fixed to the holder 1500. FIG.

Then, the photoelectric hybrid cable 100 is fixed to the hanger unit 1300 as shown in FIG. 5 (b).

In this case, the operator places the end of the photoelectric hybrid cable 100 on the hanger 1330 of the hanger unit 1300 and supports the same. At this time, the cable flange 1140 formed at the end of the photoelectric hybrid cable 100 is hooked on the hanger 1330 to prevent the photoelectric composite cable 100 from falling down.

Since the connection cable 1400 is temporarily held in the holder 1500 when the photoelectric hybrid cable 100 is mounted on the hanger unit 1300 as shown in Figure 5 (b) It is possible to prevent the photoelectric hybrid cable 100 and the connection cable 1400 from interfering with each other.

5C, the operator disconnects the connection cable 1400 fixed to the holder 1500 from the holder 1500 and restores the connection cable 1400 without being bent. In this case, the cable connection unit 1430 formed at the end of the connection cable 1400 may be interfered with the connection unit 1150 of the connector unit 1100 of the photoelectric hybrid cable 100.

5 (c), the cable connection unit 1430 formed at the end of the connection cable 1400 in a state where the connection cable 1400 is partially inserted inside the terminal box 1200, The position of the coupling portion 1150 of the connector unit 1100 of the composite cable 100 can be aligned.

5 (d), the operator joins the coupling portion 1450 to the screw thread 1130 formed at the end of the photoelectric hybrid cable 100. As shown in FIG. Thus, the connector unit 1100 of the photoelectric hybrid cable 100 can be connected to the cable connection unit 1430 of the connection cable 1400.

Therefore, according to the terminal box system 1000 for a photoelectric hybrid cable according to the present embodiment, when the connection operation for connecting the photoelectric hybrid cable 100 to the connection cable 1400 of the terminal box 1200 is performed, Can greatly improve.

That is, even when the weight of the photoelectric hybrid cable 100 is heavy, the photoelectric hybrid cable 100 is first mounted on the hanger unit 1300, and the connection cable 1400 is connected to the photoelectric composite cable 100 It is possible to perform work by a single operator without requiring two or more workers as in the prior art. Accordingly, in the case of performing the connection operation between the photoelectric hybrid cable 100 and the terminal box 1200, the labor cost and time required for the work can be remarkably reduced, thereby improving the work efficiency.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. . It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

50: Jumper cable
100: Photoelectric composite cable
1000: Terminal box system for photoelectric composite cable
1200: Terminal box for photoelectric composite cable

Claims (11)

A terminal box system for a photoelectric hybrid cable for branching at least one photoelectric composite cable including a plurality of electric power units and a plurality of optical units to a plurality of jumper cables,
A box-shaped terminal box longer than the width or thickness;
A connection cable provided at a longitudinal end of the terminal box, the connection cable being detachably connected to the photoelectric composite cable and being capable of being bent; And
And a plurality of jumper connection units spaced along the longitudinal direction of the terminal box, the jumper connection units detachably connecting the jumper cables. The method according to claim 1,
Wherein the connection cable has one end connected to the lower end of the terminal box and the other end provided with a cable connection unit for connection of the photoelectric hybrid cable. 3. The method of claim 2,
Wherein the connection cable includes a bellows-type outer shell capable of angle bending at 90 degrees or more. 3. The method of claim 2,
Wherein the connection cable is partially inserted into the terminal box or can be contracted so that the length of the connection cable can be adjusted in connection with the terminal box. The method according to claim 1,
And a hanger unit for supporting a cable connector unit of the photoelectric hybrid cable to the terminal box, wherein the cable connector unit is provided at an end of the photoelectric hybrid cable. 6. The method of claim 5,
Wherein the hanger unit comprises a support bar connected to the terminal box and extended by a predetermined length and a hanger provided at an end of the support bar for supporting a cable connector unit of the photoelectric hybrid cable, Box system. The method according to claim 6,
Wherein the support bar is slidably mounted on the terminal box so that the length of the support bar can be adjusted. The method according to claim 1,
The terminal box system for a photoelectric hybrid cable according to claim 1, further comprising a holder provided on the terminal box for fixing the connecting cable by bending the connecting cable upward. In a base station system based on a remote radio head (RRH), a photoelectric composite cable connected to a baseband unit (BBU) and a power supply unit is connected to a plurality of remote RF units (RRUs) A plurality of jumper cables connected to the plurality of jumper cables, respectively,
Terminal box;
At least one cable connection unit provided in the terminal box so that a connection direction or a connection position for connecting the cable connector unit to the cable connector unit is adjustable at an end of the photoelectric hybrid cable;
And a plurality of jumper connection units provided in the terminal box for detachably connecting the plurality of jumper cables. 10. The method of claim 9,
Wherein a connection cable capable of bending is provided at a lower end of the terminal box, and the cable connection unit is provided at an end of the connection cable. 11. The method of claim 10,
Wherein the connection cable has a bellows type outer shell.

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