KR101330648B1 - A outdoor optical connector assembly using multiple cores mt ferrule - Google Patents

Abstract

According to the disclosed present invention, outdoor optical connector assembly using a multicore MT ferrule (610) comprises an optical connector body (310) installed to expose a part of the multicore MT ferrule to the outside, accommodating a ferrule unit (600) including the multicore MT ferrule in which an optical cable and the multicore MT ferrule are connected to other end unit; and an adaptor (320) combined with an optical fiber outlet included in a connecting case or other optical connector body including the multicore MT ferrule and combined with one end unit of the optical connector body to enable the exposed part of the ferrule unit to be located inside. Characterized are the adaptor separated from the optical connector body or combined with the optical connecter body with a push/pull method; a combination protrusion (422) formed on the outside surface of the optical connector body; and a combination groove (323) in which the combination protrusion is inserted.

Description

A outdoor optical connector assembly using multiple cores MT ferrule}

The present invention relates to an outdoor optical connector for connecting an optical cable in the outdoors, and more particularly, to an outdoor optical connector using a multi-core MT ferrule.

The optical connector has a ferrule embedded therein and has a structure for connecting an external optical cable to the ferrule. On the other hand, the optical connector is connected to each other by an optical fiber outlet and an adapter (or a receptacle) provided in another neighboring optical connector or junction box, where the adapter may connect two ferrules between two optical connectors or optical fiber outlets of the optical connector. .

As smart devices are popularized, the demand for data is exploding due to the increase of multimedia services. However, since the type of wireless processing unit varies depending on the frequency used for each wireless communication service such as 3G (W-CDMA, HSPA, TD-SCDMA), Wimax (Wibro), and 4G (LTE, Wimax2), a separate base station expansion is required for each service. need. However, if additional antennas and base stations are additionally installed for this purpose, space constraints and resource waste due to the base station operation may occur.

In order to solve the above problems, each service provider adopts a FTTA (Fiber To The Antenna) method as a method for expanding a base station serviceable area, and instead of installing a new base station, a BTS (wireless base station) that communicates with an existing terminal. In order to minimize the power consumption, which is the most problematic problem in the base station transceiver subsystem, the RRH (radio processing unit) method is used to minimize the power consumption generated from the cable during the RF (Radio Frequency) signal transmission. Remote Radio Head) was installed on top of the antenna to minimize the length of the transmission cable. As a result, the RRH communicates with the integrated base station via optical cable, making it more economical. Since it is separated from the BTS, the base station can be made smaller. In addition, the power consumption for the base station operating costs can be significantly reduced. This is in line with the green IT policy that is attracting global attention.

The construction environment of the outdoor optical connector, which serves to connect optical signals between RRH and RRH in the FTTA communication network, is installed on the upper floor of the antenna, which is easy to work like a roof of a building, but like a high tower In addition to difficult and impossible general work, there are many places where the external environment is vulnerable, such as wind wave and UV corrosion. As a way of overcoming this, the cable branch and connector mounting are supplied at the factory to the hybrid cable end of the upper RRH to the ground in advance so that construction can be completed by simple physical coupling in the field.

The outdoor optical connector applied to FTTA should be waterproof and protect against the external environment due to its characteristics, and since it was developed solely for transmitting and receiving signals, the size of the product is large and the LC type 2core optical connector is mainly used. , Korean Unexamined Patent Publication No. 2011-119449 (“Outdoor Optical Connector Module”) discloses an LC type 2core outdoor optical connector.

The outdoor optical connector module has a disadvantage in that it takes more time to work by connecting the connectors in a screw manner, and the waterproofness should be emphasized due to the characteristics used in the outdoors. In addition, since communication signals are simply considered to be transmitted and received without considering the scalability of the communication signals, communication companies are urgently required to use outdoor multi-core optical connectors to expand the communication signals.

Today, telecommunication companies are already providing more than 100MB of transmission bandwidth per subscriber to provide subscribers with triple play services such as internet, 3D games, IPTV, VoIP, etc. Korea is building a nationwide high-speed communication network. The use of high-speed optical access technology and multi-core optical cable has emerged to establish a communication network, and it has already been based on multi-core optical connectors and high-speed multi-channel optical connectors in FTTH subscriber network technologies such as AON (Active Optical Network) and PON (Passive Optical Network). The high speed optical connection module technology is an essential technology required. MT Ferrule and MPO multi-core optical connectors have emerged for the connection between such high speed optical connection technology and multi-core optical cables.

Optical connector is generally divided into single-core and multi-core type. In the case of single-center type, it is composed of FC and MU type connectors centering on SC type optical connector. Recently, LC type optical connector, SFF (Small From Factor) It is gradually occupying the market.

The multi-core type consists of MT-RJ and MPO type optical connectors. A commercial optical connector 100 using a multi-core MT ferrule as shown in the exploded perspective view of FIG. 1 combines optical fibers to transmit from a bundle 102 of one or more optical fibers at one end 104 of the optical connector 100. The light is used to pass through the optical connector 100 to the optical fiber or device connected to the other end 106 of the optical connector 100. In general, ferrule 108 is part of optical connector 100, which is part of optical connector 100 into which optical fiber 110 itself is inserted before ferrule 108 is inserted into the entire optical connector 100 itself. Ferrule 108 maintains the optical fiber (s) in a precise position and allows the optical fibers of the optical connector to maintain a constant alignment when the optical connector is mounted with a mating other optical connector or other device.

In today's commercially available multi-fiber connectors, as shown in US Pat. No. 5,214,730, most connections belong to optical fiber arrays consisting of between 2 and 12 optical fibers arranged in a single row (some commercial 2x12 forms May be used). Such connectors are called various names depending on the manufacturer. For 1x2 arrays, it is called ST, LC, MT-RJ connectors, among others, for 1x12 and some 2x12 array connectors, it is called MTP, MPO, MPX, and SMC connectors. In the area of 1x12 or 2x12, all of the various connectors are US Conec Ltd. And Alcoa Fujikura Ltd. Uses a common form of commercial ferrule manufactured by. Also, in some cases, ferrules used for small arrays of connectors (i.e. 12 optical fibers or less) have a shape and size compatible with MTP, MPO, MPX, and SMC connectors.

FIG. 2 is a perspective view as an enlarged view of a prior art 1x12 ferrule 200 having an external dimension for use in a prior art MTP, MPO, MPX, or SMC connector. These ferrules 200 are made by molding plastic or epoxy. For example, currently commercially available 1x12 (as shown) and 2x12 ferrule techniques are based on the molding and curing of glass filled epoxy resins (high performance plastics) using a common molding technique called transfer molding.

There has been an increase in user demand for a larger group of optical fibers in the field of optical fibers, and there has been an increase in the need for a single connector to control an array of more than 12 optical fibers. Today, ferrules 200 as shown in FIG. 2 molded from epoxy or plastic can be made in the order of one or more rows of up to 12 optical fibers in small arrays of multimode optical fibers at the required limits. However, special care is required during manufacture. Plastic molding technology is a very sensitive process and it is extremely difficult to make molding machines with the required precision even for small arrays. Moreover, the yield tends to be lowered due to inherent manufacturing process errors that occur during plastic molding. Since the limits of these parts must be very accurate (in dimensions of about 1 to 2 microns), it is difficult to achieve high production yields when array sizes require two rows, especially when two rows or more.

Multi-core optical connectors using multi-core MT ferrules are optical components used to transmit optical signals in all optical transmission systems based on high-speed, high-capacity optical transmissions (Gigabit Ethernet, ATM-LAN, WDM, all-optical networks, etc.). , Low BER (Bit Error Rate), large-capacity long-distance transmission, less than 1.0 dB connection loss according to the requirements of miniaturization, transmission capacity of more than tens of Gbps by multi-channel up to 40 channels, transmission distance of more than 0.1km, small price It is an optical device with the next generation core optical connection technology that has the required characteristics and is the only alternative to solve the bottleneck of the electrical signal and will be applied to the high speed and large capacity connection system.

Therefore, the development of an optical connector using such a multi-core MT ferrule is urgently needed, and an outdoor optical connector that emphasizes the convenience, accuracy, and waterproofness of the assembly is urgently needed due to the characteristics used outdoors.

SUMMARY OF THE INVENTION The present invention has been made in view of the above point, and an object of the present invention is to provide an outdoor optical connector assembly using a multi-core MT ferrule, which is required for convenience and accuracy of assembly and has excellent waterproofness.

In the outdoor optical connector assembly using the multi-core MT ferrule according to the present invention for achieving the above object, a ferrule unit 600 having a multi-core MT ferrule 610 is accommodated therein but a part of the multi-core MT ferrule 610 is An optical connector body 310 installed to be exposed to the outside of one end and connected to the other end of the optical cable connected to the multi-core MT ferrule; And an adapter 320 coupled to one end of the optical connector body 310 so that an exposed portion of the ferrule unit 600 is located therein, and coupled to an optical fiber outlet provided in another optical connector body or a junction box. Include. Herein, one end outer side surface of the optical connector body 310 is formed with a coupling protrusion 422, and one end outer side surface of the adapter 320 has a coupling groove 323 into which the coupling protrusion 422 is fitted. Thus, the optical connector body 310 and the adapter 320 is coupled / separated by a push / pull method.

The optical connector body 310 has a ferrule accommodation portion 424 therein, and a body 330 having a coupling protrusion 422 coupled to the coupling groove 323 of the adapter 320 at an outer diameter of one side thereof. And, the ferrule unit 600, a part of which is inserted into the ferrule accommodation portion 424, the connector housing 700 is installed to surround the coupling portion of the adapter 320 and the body 330, and the body 330 It is coupled to the other side of the includes a sealing tube surrounding the optical cable connected to the body to seal.

The body 330, the flange portion 410, the flange portion 410 extends to one side of the rotor and the ferrule receiving portion 424 is formed therein and the coupling portion 422 is formed on the outer surface 420 and the first optical cable accommodating part 440 extending from the flange part 410 to the other side and communicating with the ferrule accommodating part 424 therein and accommodating the optical cable therethrough, and having a first outer peripheral surface. A first body 400 including a first coupling part 430 having a thread 432 formed therein, and a second optical cable accommodation part 510 communicating with the first optical cable accommodation part 440 penetrate therein. And a second coupling part 520 having a second screw thread 522 corresponding to the first screw thread 432 on one side inner circumferential surface of the first body 400 to be screwed to the first body 400, and the second coupling part. A second body 500 extending from 520 and including a sealing tube coupling portion 530 coupled to the sealing tube 800.

An end portion of the first coupling part 430 of the first body 400 is installed to extend the compression packing member 450 made of an elastic material, and the other side of the second coupling part 520 of the second body 500. The second optical cable accommodating part 510 therein is formed such that its inner diameter becomes smaller toward the other side of the second coupling part 520, and thus, the first coupling part 430 and the second body ( When the second coupling part 520 of the 500 is screwed, the compression packing member 450 is located inside the other side of the second coupling part 520 and is accommodated in the second optical cable accommodation part 510. To compress.

In addition, the inside of the compression packing member 450 is further provided with a cylindrical compression sealing member 660 which is installed to surround the optical cable.

Sealing grooves 426 and 532 are formed in the outer circumferential surface of the adapter unit 322 of the first body 400 and the sealing tube coupling part 530 of the second body 500, respectively, and sealing members are formed in the sealing grooves 426 and 532. 427 and 533 are provided respectively.

The adapter 320, an adapter groove 323 is formed on the outer surface to be coupled to the coupling protrusion 422 of the body 330 is coupled to wrap the connector housing 700, and An adapter flange portion 326 connected to an end of the adapter portion 322 to suppress movement of the connector housing 700, and an optical fiber outlet extending from the adapter flange portion 326 and provided in another optical connector module or a junction box; And a connecting portion 328 connected thereto.

Sealing grooves are formed in the outer surface of the adapter portion 322 and the outer surface of the connecting portion 328, respectively, and the sealing members 325 and 329 are provided in the sealing grooves, respectively.

The ferrule unit 600 is installed so that the fixing protrusion 622, which is caught by the ferrule housing stopper 428 formed at the end of the body 330 protrudes to the outer side, and the space therethrough through the ferrule housing 620 And a multi-core MT ferrule 610 inserted into an inner space of the ferrule housing 620 so that one end thereof is exposed to the outside, and installed to be supported by the ferrule housing 620 and moving the multi-core MT ferrule 610 to a predetermined position. A ferrule stopper 630 for fixing, and a spring 640 connected to the end of the multi-core MT ferrule 610 and the inner end of the ferrule stopper 630.

The ferrule stopper 630 has a space for inserting the spring 640 into a portion of the inner portion of the body, and the cylindrical optical cable receiving portion 634 formed with a space for accommodating the optical cable therein extends from the inside to the outside of the body. It is installed, the optical cable receiving portion 634 is installed so as to surround the cylindrical pressing ring 670.

The sealing tube has a structure of straight (800) or curved (800 ') having a predetermined radius of curvature.

According to the present invention, it is easy to assemble the optical connector body in the outdoors where the working environment is not easy, and the optical connector assembly can be easily assembled by combining the optical connector body and the adapter by a push method, thereby increasing user convenience. In addition, there is a cost saving effect due to the reduction of construction time. In addition, since it is compatible with indoor or outdoor MPO connector employing the existing common multi-core MT ferrule, there is no additional cost burden, there is a cost saving effect.

On the other hand, it is effective in waterproofing by installing the connector housing around the coupling part of the body and the adapter, and installs a sealing member at the coupling part of each component, that is, the coupling part of the body and the adapter, the adapter and connector housing, and the coupling part of the body and the sealant tube. It is more effective for waterproofing.

In addition, by applying a compression packing member to the inside of the body and by installing a pressing ring on the outer surface of the cable receiving portion of the ferrule unit by compressing the optical cable to bring the effect of securing tension and preventing cable twist. In addition, by providing a compression packing member and a pressing sealing member in the inside of the double brings a double waterproof effect.

In addition, by applying the sealing tube in a straight or curved structure according to various outdoor environments there is an effect that can be stably protect the optical cable.

1 is an exploded perspective view of a conventional MPO optical connector,
2 is a perspective view of a conventional multi-core MT ferrule,
3 is a perspective view of an optical connector body and an adapter separated from the outdoor optical connector assembly according to an embodiment of the present invention;
Figures 4a and 4b is a perspective view of the combined state of the optical connector body and the adapter in the outdoor optical connector assembly according to an embodiment of the present invention,
5 is an exploded perspective view of the outdoor optical connector assembly of FIG. 4A;
6 is a cross-sectional view of FIG. 5;
7a and 7b are a perspective view and a cross-sectional view of the first body of Figure 5,
8A and 8B are a perspective view and a cross-sectional view of the second body of Figure 5,
9a and 9b are a perspective view and a cross-sectional view of the ferrule unit of FIG.
10A and 10B are perspective and cross-sectional views of the adapter of FIG. 5, FIG.
11A and 11B are perspective and cross-sectional views of the connector housing of FIG. 5;
12a and 12b is a perspective view and a cross-sectional view of the sealing tube of FIG.
Figure 13 is a perspective view of the combination of the outdoor optical connector assembly according to another embodiment of the present invention.

The above objects, features and other advantages of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, an outdoor optical connector assembly using a multi-core MT ferrule according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of an outdoor optical connector assembly 300 before the optical connector body 310 and the adapter 320 are coupled, and FIG. 4A is an outdoor optical connector assembly to which the optical connector body 310 and the adapter 320 are coupled. 3 and 4A, the outdoor optical connector assembly 300 according to the embodiment of the present invention includes an optical connector body 310 and an adapter 320.

An adapter 320 is coupled to one end of the optical connector body 310, and an optical cable (not shown) is connected to the other end of the optical connector body 310. An optical cable generally has a structure including a core line for transmitting an optical signal and a coating layer covering and protecting an outer portion of the core line. One end of the optical cable is inserted into the optical connector body 310 so that the core wires are physically connected to each other with the connection cores of the multi-core MT ferrule 610 of the ferrule unit 600 located inside the optical connector body 310. It is connected interchangeably. One end of the multi-core MT ferrule 610 is installed to be exposed to the optical connector body 310, and the exposed portion of the multi-core MT ferrule 610 is coupled to the adapter 320 when the optical connector body 310 and the adapter 320 are combined. It is located inside. On the other hand, the adapter 320 coupled to the optical connector body 310 is coupled to or connected to the multi-core MT ferrule 610 corresponding to the multi-core MT ferrule 610 or another optical connector or optical connector body having a multi-core MT ferrule It is combined with the optical fiber outlet provided in the box. 4B illustrates a state in which the connector housing 700 of the optical connector body 310 is removed in FIG. 4A. When the optical connector body 310 is assembled by pushing (pushing) in the direction of the arrow after the assembly, the optical connector body ( The coupling protrusion 422 formed at one end of the outer side of the 310 is fitted into the coupling groove 323 formed at the outer side of the one end of the adapter 320 to complete the coupling. When the optical connector main body 310 and the adapter 320 are separated, the optical connector main body 310 is pushed forward while being slightly pushed out so that the end of the coupling protrusion 420 comes out of the coupling groove 323 and then pulled out (pulled).

Figure 5 is an exploded perspective view of Figure 4a, Figure 6 shows a cross-sectional view of Figure 4a, respectively.

The optical connector body 310 is composed of a first body 400 and a second body 500, the ferrule unit 600 is inserted into the body 330, the ferrule receiving portion 424 inside the body 330 And the connector housing 700 installed to surround the adapter 320 and a part of the body 330 and the other side (second body) of the body 330 to surround the optical cable inserted into the body 330. It includes a sealing tube (800). The adapter 320 described above is coupled to one side (first body) of the body 330. Hereinafter, each component will be described in detail.

5 to 7B, the first body 400 includes a flange part 410, an adapter part 420, and a first coupling part 430. The adapter part 420 extends to one side of the flange part 410 and has a ferrule accommodating part 424 in which a part of the ferrule unit 600 is accommodated. And the outer surface of the adapter portion 420, that is, the upper and lower coupling protrusions 422 are formed to protrude, the coupling projections 422 are slidingly coupled to the coupling groove 323 of the adapter 320. In addition, the outer surface of the adapter portion 420, that is, the left and right sides of the housing fixing protrusion 425 is formed to protrude, the housing fixing protrusion 425 is a fixing projection seating groove 740 of the connector housing 700 to be described later (Fig. 11b) Will be inserted). On the other hand, a sealing groove 426 is formed on the outer surface of the end portion of the adapter portion 420, the sealing groove 426 is provided with a sealing member 427 (see Fig. 6, for example) of a rubber material, the first body 400 ) To seal when combined with the adapter (320). The first coupling portion 430 extends from the flange portion 410 to the other side and has a first optical cable accommodation portion 440 communicating with the ferrule accommodation portion 424 therein and accommodating an optical cable (not shown). Note that as shown in FIG. 7B, the division of the ferrule accommodation portion 424 and the first optical cable accommodation portion 440 in the space inside the first body 400 is clearly divided based on the flange portion 410. In the present invention, it is sufficient to understand that the ferrule accommodation portion 424 and the first optical cable accommodation portion 440 are formed in communication with each other in the first body 400. In addition, a first screw thread 432 formed of, for example, a male screw thread is formed on an outer circumferential surface of the first coupling part 430.

On the other hand, according to a preferred embodiment of the present invention, the end of the first coupling portion 430 of the first body 400 is provided so that the compression packing member 450 of the elastic material is extended. The pressing packing member 450 preferably has a form in which a plurality of pressing packing members are installed in the longitudinal direction of the first body at regular intervals from the circumferential surface of the first coupling part 430. Herein, the meaning of the elastic material may be interpreted as having a certain restoring force, and may also include the meaning of the elastic material. The operation of the compression packing member will be described later.

5 and 6, 8A, and 8B, the second body 500 includes a second optical cable accommodating part 510 communicating with the first optical cable accommodating part 440 of the first body 400. It is formed to penetrate through, and consists of a second coupling portion 520 and the sealing tube coupling portion 530. On one inner circumferential surface of the second coupling portion 520, a second screw thread 522 is formed, for example, a female screw thread corresponding to the first screw thread 432 of the first body 400. The shapes of the first screw thread and the second screw thread may be interchanged. The sealing tube coupling part 530 extends from the second coupling part 520 and is coupled to the sealing tube 800. The outer surface of the sealing tube coupling portion 530 is formed with a sealing groove 532, the sealing groove 532 is inserted into the sealing projection 810 formed on the inner peripheral surface of the sealing tube 800, the second body 500 And sealing tube 800 to perform the role of sealing when combined (see Figure 6). Meanwhile, in the exemplary embodiment of the present invention, the sealing protrusion 810 is installed in the sealing tube 800, and the sealing protrusion 810 is inserted into the sealing groove 532, but the present invention is not limited thereto. For example, a sealing protrusion may be omitted in the sealing tube 800, and a sealing member made of a rubber material may be installed in the sealing groove 532.

Meanwhile, as described above, the inner space of the second body 500 is formed so that the second optical cable accommodating part 510 penetrates, and the second optical cable accommodating part 510 is an inner space of the second coupling part 520 again. 510a and the sealing tube coupling part 530 may be divided into an inner space 510b. Here, the second optical cable accommodating part 510a, which is a space inside the other side of which the thread of the second coupling part 510 is not formed, becomes smaller as the inner diameter thereof becomes smaller toward the other side (right side) of the second coupling part 520. The cross section of the inner diameter is formed to be inclined. Referring to FIG. 6, the first body 400 and the second body 500 are coupled by screwing. At this time, the compression packing member 450 of the first body 400 is connected to the second coupling part 520. ) Is positioned at the second optical cable accommodation portion 510a. Since the second optical cable accommodating part 510a of the second coupling part 520 is formed to have a smaller inner diameter toward the right side, the compression packing member 450 is contracted by the inner wall of the second coupling part 520. Therefore, the outer sheath of the optical cable accommodated in the second optical cable accommodating part 510a may be compressed to secure tensile strength and to prevent twisting of the optical cable. In addition, the role of the sealing as well as the crimping role is to play an effective role in terms of waterproof. In addition, there is an advantage that can be actively applied according to the type of optical cable by adjusting the inner diameter of the second coupling portion.

In addition, a cylindrical compression sealing member 660 may be further provided between the compression packing member 450 and the optical cable as necessary. The compression sealing member 660 may be formed of, for example, a rubber material, and the length of the compression sealing member 660 may be substantially the same as that of the compression packing member 450. In this way, the compression sealing member 660 is installed to surround the optical cable, and the compression packing member 450 is wrapped on the outside thereof so that the optical cable is doubled waterproof.

5 and 6, 9A, and 9B, the ferrule unit 600 includes a ferrule housing 620 and a multi-core MT ferrule 610 inserted into the ferrule housing 620 so that the front portion is exposed to the outside. And a ferrule stopper 630 installed to be supported by the ferrule housing 620 to fix the multi-core MT ferrule 610 to a predetermined position, and an end of the multi-core MT ferrule 610 and a spring connected to the ferrule stopper 630. 640. The multi-core MT ferrule 610 has a generally rectangular body and has a connecting core line extending in the longitudinal direction, and the connecting core line is physically connected to the core line of the optical cable (not shown). Are connected to each other. The ferrule housing 620 has a space formed therein to accommodate the ferrule 610 and the ferrule stopper 630. On the other hand, the upper surface of the ferrule housing 620, the fixing protrusion 622 is formed to protrude in the upper direction, the fixing protrusion 622 is a ferrule housing stopper formed at the end of the adapter portion 420 of the first body 400 (428, see FIG. 7B), and thus, the ferrule unit 600 cannot move forward. The spring 640 is installed so that one end is supported at the end of the multi-core MT ferrule 610 and the other end is supported at the end of the optical cable receiving portion 634 formed inside the ferrule stopper 630. Ferrule stopper 630 has a space is formed so that the spring 640 is inserted into the inner portion of the body, the cylindrical optical cable receiving portion 634 is formed to extend from the inside of the body to the outside formed a space for receiving the optical cable therein. . A seating protrusion 632 is formed to protrude from the outer surface of the ferrule stopper 630 so that the ferrule stopper 630 is inserted into and fixed to the seating groove 624 formed on the side of the ferrule housing 620 when the ferrule stopper 630 is inserted into the ferrule housing 620. Will be.

Meanwhile, the compression ring 670 may be additionally installed in the optical cable receiving portion 634 exposed to the outside of the body of the ferrule stopper 630 (see FIG. 6). The material of the pressing ring is not limited to a specific material, and for example, plastic synthetic resin having a certain degree of elasticity may be applied. The coating layer surrounding the core line of the optical cable is composed of a plurality of buffers, shells, and tensile auxiliary lines (aramid yarns), and the structure of the optical cable in the optical cable receiving portion 634 to connect the core line of the optical cable to the connection core of the multi-core MT ferrule. Accordingly, the optical cable can be accommodated with a portion of the coating layer removed. Therefore, the optical cable receiving portion 634 by the pressing ring by the compression ring to secure the tensile force and there is an effect that can be fixed stably to the external environmental changes.

5 and 6, 10A and 10B, the adapter 320 includes an adapter portion 322, an adapter flange portion 326, and a connection portion 328. Adapter portion 322 is formed on the outer surface, that is, the upper and lower coupling grooves 323 corresponding to the engaging projection 422 of the body 330, the adapter portion 322 is installed so as to surround the connector housing 700. . The flange portion 410 is connected to the end of the adapter portion 322 to constrain the movement of the connector housing 700. The connection part 328 extends from the adapter flange part 326 and connects with another ferrule unit or an optical connector module having the same or an optical fiber outlet provided in the connection box. The shape of the connection part 328 is advantageous in that it is designed to be compatible with an indoor or outdoor MPO connector employing a conventional multi-core MT ferrule.

On the other hand, a sealing groove is formed in the outer surface of the adapter portion 322 and the outer surface of the connecting portion 328, respectively, and sealing members 325 and 329 are provided in the sealing groove, respectively, and the adapter portion 322 and the connecting portion 328 are provided. When the connector housing 700 and the other ferrule unit or the optical connector or the optical fiber outlet having the same coupling or connection to perform the sealing role.

5 and 6, 11a and 11b, the connector housing 700 is installed to surround the connecting portion of the adapter 320 and the body 330 serves to protect from the outside, the adapter 320 The adapter protection unit 710 surrounding the () and the body protection unit 720 extending from the adapter protection unit 710 and surrounding the first body 400 of the body 330 is provided. Body protector 720 is in the form of a corrugated pipe, the upper and lower end inner wall of the body protector 720 is formed with a coupling projection seating groove 730 is seated on the upper surface of the engaging projection 422 of the first body 400 The left and right inner walls of the body protection part 720 are provided with fixing protrusion seating grooves 740 in which the housing fixing protrusions 425 of the first body 400 are seated. Accordingly, by the coupling of the fixing protrusion seating groove 740 and the coupling protrusion seating groove 730 of the connector housing 700 and the housing fixing protrusion 425 and the coupling protrusion 422 of the first body 400 corresponding thereto. The connector housing 700 is stably fixed to the first body 400.

12A and 12B, the sealing tube 800 has a space formed therein for the optical cable to penetrate therein. One side of the sealing tube 800 is fitted to surround the sealing tube coupling portion 530 of the second body 500, the sealing protrusion 810 is installed therein, the sealing protrusion 810 is a second It is inserted into the sealing groove 532 of the body 500. However, as described above, the sealing protrusion may be omitted in the sealing tube 800 and a separate rubber sealing member may be installed in the sealing groove 532.

FIG. 13 is a perspective view showing a coupling view of an outdoor optical connector assembly 300 'according to another embodiment of the present invention. In the previous embodiment, the sealing tube 800 has a straight structure. The tube 800 'has a curved structure. Since the other components except for the sealing tube 530 are all the same, detailed description thereof will be omitted. The jade roof where the optical connector assembly is installed can be arranged to bend the optical cable connected to the optical connector assembly due to various spatial structures and external environmental factors.If the optical cable is bent due to external environmental factors, damage to the optical cable and change of optical loss There is a risk of bringing. Accordingly, by applying the curved sealing tube 800 'to have a predetermined radius of curvature, the optical cable can be protected by an external environment. As described above, according to the outdoor optical connector assembly according to the present invention, by applying a straight or curved sealing tube according to various outdoor environments, there is an advantage of stably protecting the optical cable.

In the optical connector assembly having such a configuration, after the core line of the optical cable and the connection core of the multi-core MT ferrule 610 of the ferrule unit 600 are physically connected and the optical connector main body 310 is assembled, FIG. As shown in the figure, when the optical connector body 310 is inserted into the adapter 320 in the direction of the arrow, the fixing protrusion 425 of the body 310 is firmly coupled to the coupling groove 323 of the adapter 320 so that the optical connector Assembly of the assembly is complete.

As described above, according to the outdoor optical connector assembly according to the present invention, the assembly of the optical connector body 310 is easy and the sliding push of the optical connector body 310 and the adapter 320 in the outdoors where the working environment is not easy. Since the optical connector assembly is easy to assemble by combining by a push method, user convenience is increased and cost is reduced due to shortening of construction time. In addition, the adapter 320 is designed to be compatible with an outdoor or indoor MPO connector (connector module or connector body) employing a common multi-core MT ferrule, which is used in the past, thereby increasing convenience and reducing costs. have. On the other hand, it is effective to waterproof by installing to surround the connector housing 700 in the coupling portion of the body 330 and the adapter 320, the fastening portion of each component, that is, the body and adapter, adapter and connector housing, body and sealing By installing a sealing member at each coupling portion of the tube, the waterproof function is strengthened, so that it can be stably secured for use outdoors and can increase the reliability of the product.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described specific embodiment. It will be apparent to those skilled in the art that numerous modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims. And equivalents should also be considered to be within the scope of the present invention.

300. Optical connector assembly 310. Optical connector body
320. Adapter 322. Adapter Section
323. Coupling groove 326. Adapter flange
328. Connections 330. Body
400. First Body 410. Flange
420. Adapter part 425. Fixing protrusion
430. First coupling portion 450. Crimp packing member
500. Second body 520. Second coupling part
530. Sealing tube coupling part 600. Ferrule unit
610. Multi-core MT Ferrule 620. Ferrule Housing
630. Ferrule Stopper 640. Spring
700. Connector housing 800,800 '. Sealing tube

Claims (11)

As an outdoor optical connector assembly using a multi-core MT ferrule,
A ferrule unit 600 having a multi-core MT ferrule 610 is accommodated therein, but a part of the multi-core MT ferrule 610 is installed to be exposed to the outside of one end, and an optical cable connected to the multi-core MT ferrule is connected to the other end. Optical connector body 310;
It is coupled to one end of the optical connector body 310 so that the exposed portion of the ferrule unit 600 is located therein, and includes an adapter 320 coupled to the optical fiber outlet provided in the other optical connector body or junction box, ,
Coupling protrusions 422 are formed at one end outer surface of the optical connector body 310, and coupling grooves 323 are formed at one end outer surface of the adapter 320 to which the coupling protrusions 422 are fitted. The optical connector assembly for outdoor use using a multi-core MT ferrule, characterized in that the optical connector body 310 and the adapter 320 are coupled / separated by a push / pull method.
The method of claim 1, wherein the optical connector body 310,
A body 330 having a ferrule accommodation portion 424 therein and having a coupling protrusion 422 coupled to the coupling groove 323 of the adapter 320 at one side outer diameter thereof, and the ferrule accommodation portion 424. The ferrule unit 600 is inserted into the part, the connector housing 700 is installed to surround the coupling portion of the adapter 320 and the body 330, and coupled to the other side of the body 330 to the body An outdoor optical connector assembly using a multi-core MT ferrule, characterized in that it comprises a sealing tube surrounding the connected optical cable to be sealed.
The method of claim 2, wherein the body 330,
Adapter portion 420 and the flange portion 410, the flange portion 410 extending to one side of the rotor and the ferrule receiving portion 424 is formed therein and the engaging projection 422 is formed on the outer surface, and the plan It extends from the branch portion 410 to the other side and communicates with the ferrule receiving portion 424 therein, the first optical cable receiving portion 440 through which the optical cable is received is formed to penetrate, and the first screw thread 432 is formed on the outer circumferential surface thereof. A first body 400 including a first coupling part 430,
The second optical cable accommodating part 510 communicating with the first optical cable accommodating part 440 is formed to penetrate therein, and the first screw thread 432 is formed on one inner circumferential surface of the first optical fiber accommodating part 440 so as to be screwed to the first body 400. And a second coupling part 520 having a corresponding second screw thread 522, and a sealing tube coupling part 530 extending from the second coupling part 520 and coupled to the sealing tube 800. An outdoor optical connector assembly using a multi-core MT ferrule, characterized in that it comprises a second body (500).
The method of claim 3, wherein
An end portion of the first coupling part 430 of the first body 400 is installed to extend the compression packing member 450 made of an elastic material.
The second optical cable accommodating part 510 inside the other side of the second coupling part 520 of the second body 500 is formed such that its inner diameter becomes smaller toward the other side of the second coupling part 520.
When the first coupling part 430 of the first body 400 and the second coupling part 520 of the second body 500 are screwed together, the compression packing member 450 is connected to the second coupling part 520. Outdoor optical connector assembly using the multi-core MT ferrule, characterized in that the inside of the other side to compress the optical cable accommodated in the second optical cable receiving portion (510).
5. The method of claim 4,
An optical connector assembly for outdoor use using a multi-core MT ferrule, wherein the compression sealing member 660 is installed inside the compression packing member 450 to surround the optical cable.
The method of claim 3, wherein
Sealing grooves 426 and 532 are formed in the outer circumferential surface of the adapter unit 322 of the first body 400 and the sealing tube coupling part 530 of the second body 500, respectively, and sealing members are formed in the sealing grooves 426 and 532. Outdoor optical connector assembly using the multi-core MT ferrule, characterized in that (427,533) is installed respectively.
The method of claim 2, wherein the adapter 320,
A coupling groove 323 is formed on the outer surface to be coupled to the coupling protrusion 422 of the body 330 and the adapter portion 322 coupled to surround the connector housing 700 and the adapter portion 322. An adapter flange portion 326 connected to an end to suppress movement of the connector housing 700 and a connection portion 328 extending from the adapter flange portion 326 and connected to an optical fiber outlet provided in another optical connector module or a junction box. Outdoor optical connector assembly using a multi-core MT ferrule comprising a.
The method of claim 7, wherein
Sealing grooves are formed on the outer surface of the adapter portion 322 and the outer surface of the connecting portion 328, respectively, and the sealing grooves are provided with sealing members 325 and 329, respectively. Connector assembly.
3. The method of claim 2,
The ferrule unit 600 is installed so that the fixing protrusion 622, which is caught by the ferrule housing stopper 428 formed at the end of the body 330 protrudes to the outer side, and the space therethrough through the ferrule housing 620 And a multi-core MT ferrule 610 inserted into an inner space of the ferrule housing 620 so that one end thereof is exposed to the outside, and installed to be supported by the ferrule housing 620 and moving the multi-core MT ferrule 610 to a predetermined position. An outdoor optical connector assembly using a multi-core MT ferrule comprising a ferrule stopper (630) for fixing and a spring (640) connected to an end of the multi-core MT ferrule (610) and an inner end of the ferrule stopper (630).
The method of claim 9,
The ferrule stopper 630 has a space for inserting the spring 640 into a portion of the inner portion of the body, and the cylindrical optical cable receiving portion 634 formed with a space for accommodating the optical cable therein extends from the inside to the outside of the body. Installed,
The optical cable receiving part 634 is an outdoor optical connector assembly using a multi-core MT ferrule, characterized in that the cylindrical pressing ring 670 is installed to surround.
3. The method of claim 2,
The sealing tube is a linear (800) or outdoor optical connector assembly using a multi-core MT ferrule characterized in that it has a structure of curved (800 ') having a predetermined radius of curvature.

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