CN212781419U

CN212781419U - Optical cable connecting structure of OLT and optical distribution frame

Info

Publication number: CN212781419U
Application number: CN202021996179.8U
Authority: CN
Inventors: 陈俊杰
Original assignee: Shenzhen Hengjie Optical Communication Technology Co ltd
Current assignee: Shenzhen Hengjie Optical Communication Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-03-23
Anticipated expiration: 2030-09-11

Abstract

The utility model relates to an optical cable connection structure of OLT and optical distribution frame. The optical cable connecting structure comprises an integrated optical cable, wherein the integrated optical cable comprises a main optical cable and optical splitting cables, two ends of the main optical cable are respectively connected with N optical splitting cables, N is the least common multiple of the number Y of each row of interfaces of the OLT and the number X of each row of interfaces of the optical distribution frame, the optical splitting cable at one end of the main optical cable is used for being connected into the adjacent N/Y row of interfaces of the OLT, and the optical splitting cable at the other end is used for being connected into the adjacent N/X row of interfaces of the optical distribution frame; the optical cable splitters at two ends are respectively in one-to-one correspondence, each optical cable splitter is provided with at least one fiber core, and each fiber core penetrates through the main optical cable and penetrates into one optical cable splitter at the other end. Wherein, N is 48, Y is 16, and X is 12. The utility model discloses can realize standardized connection, the wiring is also more regular, also standardizes more easily, has reduced the volume that occupies, has satisfied the demand of operator's wiring.

Description

Optical cable connecting structure of OLT and optical distribution frame

Technical Field

The utility model relates to an optical cable connection structure especially relates to an optical cable connection structure of OLT and optical distribution frame.

Background

An OLT, i.e., an optical line terminal, is used to connect the terminal equipment of the optical fiber trunk. Optical cable distribution boxes, also commonly known as street cabinets and optical distribution frames, are generally placed on trunk optical cables for optical cable branching. The optical distribution frame is a passive device, has functions similar to those of the original copper cable cross-connecting box, and is used for dividing most optical cables into a plurality of small-pair optical cables in different directions after passing through the optical cable cross-connecting box. A conventional OLT has 192 interfaces (16 in a column) corresponding to 192 interfaces (12 in a row) of an optical distribution frame. The general method is to use 192 small optical fibers to make respective butt joint, so that the OLT and the optical distribution frame realize optical fiber connection. The connection mode leads the optical fiber line to be messy, and 192 individual optical fibers occupy larger volume and are to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's above defect, and provide an OLT and optical cable connection structure of optical distribution frame, can let the optical cable wiring realize standardization and regular, reduce simultaneously and occupy the volume.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an optical cable connecting structure of an OLT and an optical distribution frame comprises an integrated optical cable, wherein the integrated optical cable comprises a main optical cable and optical splitting cables, two ends of the main optical cable are respectively connected with N optical splitting cables, N is the least common multiple of the number Y of each row of interfaces of the OLT and the number X of each row of interfaces of the optical distribution frame, the optical splitting cable at one end of the main optical cable is used for being connected into the adjacent N/Y row of interfaces of the OLT, and the optical splitting cable at the other end of the main optical cable is used for being connected into the adjacent N/X row of interfaces of the optical distribution frame; the optical cable splitters at two ends are respectively in one-to-one correspondence, each optical cable splitter is provided with at least one fiber core, and each fiber core penetrates through the main optical cable and penetrates into one optical cable splitter at the other end. Wherein, N is 48, Y is 16, and X is 12.

Be equipped with main aramid fiber in the main optical cable and restraint, be equipped with in the beam splitting cable and divide aramid fiber to restraint, divide aramid fiber to restraint and extend into in the main optical cable and with main aramid fiber bundle overlap, press the ring sleeve pipe to press from both sides tight main aramid fiber and divide aramid fiber bundle in the outside that corresponds the overlapping position.

The main aramid fiber bundle is arranged between the armor pipe and the coating layer in the main optical cable, and the sub aramid fiber bundle is arranged between the armor pipe and the coating layer in the sub optical cable. The pressure ring sleeve is sleeved outside the main optical cable coating layer.

Compared with the prior art, the utility model beneficial effect be: interface and the adjacent interface connection of several rows of adjacent several rows of optical distribution frame that come the adjacent several rows of OLT through setting up integrated optical cable, the column number and the row number of connection are the integer, can realize standardized connection, the wiring is also more regular, also standardize more easily, and because the fibre core of branch optical cable passes through from the main optical cable in unison, a large amount of independent optical cables can not appear and directly extend to optical distribution frame from OLT, only leave a small amount of main optical cable and extend to optical distribution frame from OLT, the volume that occupies has been reduced, the demand of operator's wiring has been satisfied.

Drawings

Fig. 1 is a schematic view of the optical cable connection structure between the OLT and the optical distribution frame according to the present invention.

Fig. 2 is the schematic cross-sectional view of the joint of the main optical cable and the optical splitter cable of the present invention.

It should be noted that, the products shown in the above views are all appropriately reduced/enlarged according to the size of the drawing and the clear view, and the size of the products shown in the views is not limited.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and explained with reference to the specific embodiments.

As shown in fig. 1, this embodiment is an optical cable connection structure between an OLT30 and an optical distribution frame 20. The OLT30 is provided with 192 interfaces 31, with 16 interfaces 31 in a row. The optical distribution frame 20 also has 192 interfaces 21, and each 12 interfaces 21 are arranged in a row. As shown in fig. 1, the cable connection structure includes an integrated optical cable 10, and the integrated optical cable 10 includes a main optical cable 11 and a branch optical cable 12. The two ends of the main optical cable 11 are respectively connected to N optical splitter cables 12, where N is the least common multiple of the number Y of each row of interfaces 31 of the OLT30 and the number X of each row of interfaces 21 of the optical distribution frame 20. In this example, Y is 16, X is 12, and N is 48.

As shown in fig. 1, the optical splitter cable 12 at one end of the main cable 11 is used to access the adjacent N/Y column interface 31 of the OLT30, i.e. the adjacent 48 ÷ 16 ═ 3 column interface 31 of the OLT 30. And the optical splitter 12 at the other end of the main optical cable 11 is used for connecting to the adjacent N/X row interface 21 of the optical distribution frame 20, that is, the adjacent 48 ÷ 12 ÷ 4 row interface 21 of the optical distribution frame 20. The optical sub-cables 12 at the two ends are respectively in one-to-one correspondence, and each optical sub-cable 12 is provided with a fiber core, and each fiber core passes through the main optical cable 11 and penetrates into one optical sub-cable 12 at the other end, so that 48 fiber cores are provided in the main optical cable 11 in the embodiment. In other embodiments, if more than 1 core is provided in the drop cable, all of the cores of the drop cable also pass through the main cable.

As shown in fig. 2, a main aramid fiber bundle 112 is provided in the main optical cable 11, and the main aramid fiber bundle 112 is provided between the armor tube 113 and the cladding 111 in the main optical cable 11. The optical branch cable 12 is internally provided with an aramid fiber bundle 122, and the aramid fiber bundle 122 is arranged between the armor tube 123 and the coating layer 121 in the optical branch cable 12. The aramid strand 122 extends from the split cable 12 into the main cable 11 and overlaps the main aramid strand 112, and the main aramid strand 112 and the aramid strand 122 are clamped by the crimp sleeve 114 at the outside of the corresponding overlapping position. In this example, the pressure ring sleeve 114 is sleeved outside the cladding layer 111 of the main optical cable 11, and the pressure ring sleeve 114 synchronously compresses the cladding layer 111, the main aramid fiber bundle 112, and the secondary aramid fiber bundle 122, so that the branch optical cable 12 and the main optical cable 11 can be stably connected.

The utility model discloses a set up integrated optical cable 10 and come interface 31 that OLT30 was adjacent 3 to be connected with the adjacent 4 rows of interface 21 of optical distribution frame 20, the column number and the row number of connecting are the integer, can not appear alternately, can realize standardized connection, and the wiring is also more regular, also standardizes more easily. And because the fiber cores of the optical drop cables 12 uniformly pass through the main optical cable 11, a large number of single optical cables cannot directly extend from the OLT30 to the optical distribution frame 20, and only a small number of main optical cables 11 extend from the OLT30 to the optical distribution frame 20, so that the occupied volume is reduced, and the wiring requirements of operators are met.

The above description is only for the purpose of illustrating the technical content of the present invention by way of example, so as to facilitate the understanding of the reader, but does not represent that the embodiments of the present invention are limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention.

Claims

The optical cable connecting structure of the OLT and the optical distribution frame is characterized by comprising an integrated optical cable, wherein the integrated optical cable comprises a main optical cable and optical branch cables, the two ends of the main optical cable are respectively connected with N optical branch cables, N is the least common multiple of the number Y of each row of interfaces of the OLT and the number X of each row of interfaces of the optical distribution frame, the optical branch cable at one end of the main optical cable is used for being connected into the adjacent N/Y row of interfaces of the OLT, and the optical branch cable at the other end of the main optical cable is used for being connected into the adjacent N/X row of interfaces of the optical distribution frame; the optical splitting cables at two ends respectively correspond to each other one by one, each optical splitting cable is provided with at least one fiber core, and each fiber core penetrates through the optical splitting cable at the other end from the main optical cable.
2. The structure of claim 1, wherein N is 48, Y is 16, and X is 12.
3. The optical cable connection structure of an OLT and an optical distribution frame according to claim 1, wherein a main aramid strand is provided in the main optical cable, and a sub aramid strand is provided in the sub optical cable, the sub aramid strand extending into the main optical cable and overlapping the main aramid strand, and the main aramid strand and the sub aramid strand are clamped by a crimp sleeve at an outer side corresponding to the overlapping position.
4. The optical cable connection structure of an OLT and an optical distribution frame according to claim 3, wherein the main aramid strand is provided between the armor tube and the coating layer in the main optical cable, and the branched aramid strand is provided between the armor tube and the coating layer in the branched optical cable.
5. The OLT and optical cable connection structure of claim 4, wherein the crimp sleeve is sleeved outside the primary cable cladding.