CN219162444U - Optical cable end-forming branch structure and optical cross box - Google Patents

Abstract

The utility model belongs to the technical field of optical fiber communication, and discloses an optical cable end-forming branch structure and an optical cross box. The branching device comprises a main body and a tail cover, wherein the tail cover is arranged at one end of the main body, an optical cable is arranged in the main body in a penetrating manner, an optical cable reinforcement outlet and a plurality of optical fiber branching outlets are arranged on the tail cover, optical fibers of the optical cable penetrate out through the optical fiber branching outlets, and the reinforcement of the optical cable penetrates out through the optical cable reinforcement outlet. The fiber melting discs and the fiber branch outlets are arranged in one-to-one correspondence, the number of the fibers in the fiber branch outlets is the same as that of the tail fiber interfaces on the corresponding fiber melting discs, and the fibers extending out of the fiber branch outlets are fixed on the corresponding tail fiber interfaces in one-to-one correspondence. The hoses are arranged in one-to-one correspondence with the fiber branch outlets, the hoses are sleeved on the optical fibers in the corresponding fiber branch outlets, and one ends of the hoses penetrate through the fiber branch outlets and extend into the main body. Both ends of the branching device are filled with adhesive.

Description

Optical cable end-forming branch structure and optical cross box

Technical Field

The utility model relates to the technical field of optical fiber communication, in particular to an optical cable end-forming branch structure and an optical cross box.

Background

The optical cable terminating refers to a mode that an optical cable line needs to be connected with an optical transceiver after arriving at an office station. The method comprises the steps that an optical cable line is laid in any way outside an office, an end office or a relay station is needed to enter finally, after an outdoor optical cable enters a machine room or an optical cross box, an optical cable outer sheath is peeled for a certain length, an optical fiber sleeve and a reinforcing core are exposed, and each optical cable corresponds to one fiber melting disc; and welding the optical fibers of the optical cable with the tail fiber interface of the fiber melting disc.

For layer twisted outdoor optical cables or 12-core and below central tube optical cables, because the number of fiber cores in the tube is usually 6 or 12, and the number of pigtail interfaces on the fiber fusion trays on the ODF rack is usually 12, that is, in the case that there is no branching of the optical fibers of each optical cable, basically one optical cable corresponds to one fusion tray, or one fusion tray corresponds to every 2 optical cables. When the optical cable is opened and stripped, the reinforcement of the optical cable is fixed, the sleeve is penetrated into the hose matched with the optical cross box, and the optical fiber bundle and the fiber melting disc are matched and branched by fixing and sealing with adhesive tape.

However, for the central beam tube optical cable with more than 12 cores, such as 24-core scattered optical cable and 96-core ribbon isocentric beam tube optical cable, because the optical fiber core number of each optical cable is more, the one-to-one correspondence between the optical cable and the fiber melting disc cannot be realized in the end forming process, namely the optical fibers/fiber ribbons of the optical cable need to be branched, the whole optical cable cannot be penetrated into a hose connected with the fiber melting disc after the optical cable enters an optical cross box and is fixed, and branching needs to be carried out between a sleeve and a hose of the optical cable, and because of the specificity of the optical fibers, on one hand, once the optical fibers are exposed in the air, hydrogen in the air is diffused into the optical fiber waveguide, and irreversible attenuation loss is generated on the optical fibers; on the other hand, the protection of the optical fiber from the ferrule also causes macrobending or microbending losses to the optical fiber once bending occurs below the minimum bend radius.

Therefore, there is a need for an optical cable terminating branch structure and an optical cross box to solve the above problems.

Disclosure of Invention

The utility model aims to provide an optical cable end-forming branch structure and an optical cross box, which are convenient for connecting optical fibers with a tail fiber interface, and protect grouped optical fibers from being exposed to air.

To achieve the purpose, the utility model adopts the following technical scheme:

an optical cable terminating branch structure comprising:

the branching device comprises a main body and a tail cover, wherein the tail cover is arranged at one end of the main body, an optical cable is penetrated in the main body, an optical cable reinforcement outlet and a plurality of optical fiber branching outlets are arranged on the tail cover, optical fibers of the optical cable penetrate out through the optical fiber branching outlets, and a reinforcement of the optical cable penetrates out through the optical cable reinforcement outlet;

the fiber melting discs are arranged in one-to-one correspondence with the fiber branch outlets, the number of the fibers in the fiber branch outlets is the same as the number of the tail fiber interfaces on the corresponding fiber melting discs, and the fibers extending out of the fiber branch outlets are fixed on the tail fiber interfaces in one-to-one correspondence;

the hoses are arranged in one-to-one correspondence with the optical fiber branch outlets, are sleeved on the optical fibers in the corresponding optical fiber branch outlets, and one ends of the hoses penetrate through the optical fiber branch outlets and extend into the main body;

and the two ends of the branching device are filled with the adhesive.

Preferably, three fiber branch outlets are provided.

Preferably, the distance between the hose and the stripped end face of the optical cable is greater than 1cm.

Preferably, the tail cap includes:

a first inner tube;

the outer tube is sleeved and fixed at one end of the first inner tube, the other end of the first inner tube is inserted into the main body, and the outer tube is abutted with the main body;

the inner plate is arranged in the first inner tube, and the optical cable reinforcement outlet and the optical fiber branch outlet are both arranged on the inner plate.

Preferably, the outer tube has the same outer diameter as the main body.

Preferably, the first inner tube is the same as the main body inner diameter.

Preferably, the branching device further comprises a second inner tube, the second inner tube is arranged at one end of the main body away from the tail cover, and the main body is sleeved on the second inner tube.

Preferably, the adhesive is AB glue.

The optical cross box comprises the optical cable end-forming branch structure and a shell, wherein the optical cable end-forming branch structure is arranged in the shell.

Preferably, the branching device is disposed at an inlet of the housing.

The utility model has the beneficial effects that:

according to the end-forming branching structure of the optical cable, the optical fibers of the optical cable are divided into a plurality of groups through the tail cover of the branching device, so that the number of the optical fibers of each group is the same as the number of the tail fiber interfaces on the corresponding fiber melting disc, and the connection between the optical fibers and the tail fiber interfaces is facilitated. Each group of optical fibers are respectively coated by hoses which are arranged in one-to-one correspondence with the outlets of the optical cable reinforcements, the hoses penetrate through the outlets of the optical cable reinforcements and extend into the main body, and the two ends of the branching device are filled with the adhesive, so that the grouped optical fibers are prevented from being exposed to the air. The hose also protects and supports the grouped optical fibers, avoids the optical fibers from being damaged by the external environment and the machinery, and avoids the optical fibers from being bent smaller than the minimum bending radius. The two ends of the branching device are sealed and fixed through the adhesive, so that the winding of the adhesive tape is omitted, and the branching structure of the formed end of the optical cable is tidier and more attractive.

Drawings

FIG. 1 is a schematic diagram of an end-forming branching structure for an optical cable according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic diagram of a portion of a splitter according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a tail cap of a branching device according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of the tail cap of the splitter provided by an embodiment of the utility model;

fig. 6 is a schematic structural diagram of an optical cross box according to an embodiment of the present utility model.

In the figure:

1. a branching device; 11. a main body; 12. a tail cover; 121. an optical cable strength member outlet; 122. an optical fiber branching outlet; 123. a first inner tube; 124. an outer tube; 125. an inner plate; 13. a second inner tube;

2. a fiber melting disc; 21. a tail fiber interface;

3. a hose;

10. a housing; 101. an inlet;

100. an optical cable; 1001. an optical fiber; 1002. the end face is stripped.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 5, the present embodiment provides an end branching structure of an optical cable, which includes a branching unit 1, a fiber-melting tray 2, a hose 3, and an adhesive (not shown). The splitter 1 includes a main body 11 and a tail cap 12, wherein the tail cap 12 is covered at one end of the main body 11, an optical cable 100 is arranged in the main body 11 in a penetrating manner, an optical cable reinforcement outlet 121 and a plurality of optical fiber branch outlets 122 are arranged on the tail cap 12, optical fibers 1001 of the optical cable 100 penetrate out through the optical fiber branch outlets 122, reinforcement members of the optical cable 100 penetrate out through the optical cable reinforcement outlet 121, and reinforcement members of the optical cable 100 are used for reinforcing tensile strength of the optical cable 100, which is a common knowledge in the art and will not be repeated herein. The fiber melting disc 2 and the fiber branch outlets 122 are arranged in one-to-one correspondence, the number of the fibers 1001 in the fiber branch outlets 122 is the same as the number of the tail fiber interfaces 21 on the corresponding fiber melting disc 2, and the fibers 1001 extending out of the fiber branch outlets 122 are fixed on the tail fiber interfaces 21 in one-to-one correspondence. The hoses 3 are arranged in a one-to-one correspondence with the fiber branch outlets 122, the hoses 3 are sleeved on the optical fibers 1001 in the corresponding fiber branch outlets 122, and one ends of the hoses extend into the main body 11 through the fiber branch outlets 122. Both ends of the branching unit 1 are filled with an adhesive. Specifically, in this embodiment, the adhesive is AB glue.

In the optical cable end-forming branching structure provided in this embodiment, the optical fibers 1001 of the optical cable 100 are separated into multiple groups by the tail cover 12 of the branching device 1, so that the number of the optical fibers 1001 in each group is the same as the number of the tail fiber interfaces 21 on the corresponding fiber melting disc 2, and the connection between the optical fibers 1001 and the tail fiber interfaces 21 is facilitated. Each group of optical fibers 1001 is respectively covered by the hoses 3 arranged in one-to-one correspondence with the cable reinforcement outlets 121, the hoses 3 extend into the main body 11 through the cable reinforcement outlets 121, and both ends of the splitter 1 are filled with adhesive, so that the optical fibers 1001 after grouping (i.e., branching) are prevented from being exposed to air. The hose also protects and supports the grouped optical fibers 1001, prevents the optical fibers 1001 from being damaged by the external environment and the machinery, and prevents the optical fibers 1001 from being bent less than the minimum bending radius. The adhesive tape winding is omitted at the two ends of the fixed branching device 1 through the sealing of the adhesive, so that the branching structure of the formed end of the optical cable is tidier and more attractive.

Alternatively, the apertures of the cable strength member outlet 121 and the plurality of fiber branch outlets 122 are the same, i.e., there is no need to distinguish between the cable strength member outlet 121 and the plurality of fiber branch outlets 122 when producing the splitter 1.

In this embodiment, the most common 36-core central bundle Guan San-fiber thin-round wire armored cable is taken as an example, and since the number of interfaces of the fiber melting disc 2 is generally 12, three fiber branch outlets 122 are provided in this embodiment. The 36 optical fibers 1001 are divided into three groups, each group of 12 optical fibers 1001, the three groups of optical fibers 1001 are sleeved with the hoses 3, and the three hoses 3 with the optical fibers 1001 penetrating through pass through the tail cover 12 respectively through the three optical fiber branch outlets 122.

Alternatively, the distance between the hose 3 and the stripped end face 1002 of the optical cable 100 is greater than 1cm, and an appropriate distance is maintained between the hose 3 and the stripped end face 1002 of the optical cable 100 while protecting the optical fiber 1001 by the hose 3, ensuring a movable space of the optical fiber 1001.

Alternatively, the tail cap 12 includes a first inner tube 123, an outer tube 124, and an inner plate 125, the outer tube 124 is sleeved and fixed on one end of the first inner tube 123, the other end of the first inner tube 123 is inserted into the main body 11, and the outer tube 124 abuts against the main body 11. An inner plate 125 is disposed within the first inner tube 123, and both the cable strength member outlet 121 and the fiber branch outlet 122 are disposed on the inner plate 125. The adhesive can firmly adhere the tail cap 12 to the main body 11 by providing the first inner tube 123.

Further, the first inner tube 123 has the same inner diameter as the main body 11, further improving the connection stability between the tail cap 12 and the main body 11.

Alternatively, the outer tube 124 has the same outer diameter as the body 11, making the branch 1 more aesthetically pleasing.

Optionally, the branching device 1 further comprises a second inner tube 13, the second inner tube 13 is disposed at an end of the main body 11 away from the tail cap 12, the main body 11 is sleeved on the second inner tube 13, and the adhesive is convenient to seal the end of the branching device 1 by disposing the second inner tube 13.

Optionally, the optical fiber 1001 in the present embodiment is a colored optical fiber, and the correspondence between the optical fiber 1001 and each pigtail interface 21 of the fiber tray 2 is distinguished by the color of the optical fiber 1001.

As shown in fig. 6, this embodiment further provides an optical cross box, which includes the above-mentioned optical cable end-forming branching structure, and further includes a housing 10, where the optical cable end-forming branching structure is disposed in the housing 10.

Alternatively, as shown in fig. 6, the splitter 1 is provided at the inlet 101 of the housing 10 to facilitate the fixation of the optical cable 100.

The installation process of the optical cable end-forming branch structure provided by the embodiment comprises the following steps:

firstly, one end of an optical cable 100 is penetrated into a main body 11 of a branching device 1 and is exposed from the other end of the main body 11, the optical cable 100 is stripped by about 1.5m, and an unpeeled part of the optical cable 100 is fixed at an inlet 101 of a shell 10 of an optical cross box; grouping the optical fibers 1001 at the stripping end of the optical cable 100 according to the number (generally 12) of the tail fiber interfaces 21 of the fiber melting disc 2, wherein 3 groups are arranged, each group of optical fibers 1001 is inserted into a corresponding hose 3 of the optical cross box, and the distance between the hose 3 and the stripping end face 1002 of the optical cable 100 is at least 1 cm; subsequently, 3 hoses 3 having optical fibers 1001 threaded therein are respectively threaded out from the optical fiber branching outlets 122 on the tail cap 12 of the branching unit 1, while the strength members of the optical cable 100 are simultaneously threaded out from the cable strength member outlets 121; the tail cap 12 is attached to the main body 11, and an adhesive is injected into both ends of the branching unit 1, so that the branching unit 1, the optical cable 100, and the hose 3 having the optical fiber 1001 inserted therein are fixed in relative positions and sealed. Finally, each group of 12 optical fibers 1001 is connected to the 12 pigtail interfaces 21 of the corresponding fiber melting disc 2, and the specific connection manner between the optical fibers 1001 and the fiber melting disc 2 is common knowledge in the art, and will not be described herein.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. An optical cable terminating branch structure, comprising:

the branching device (1) comprises a main body (11) and a tail cover (12), wherein the tail cover (12) is covered at one end of the main body (11), an optical cable (100) is arranged in the main body (11) in a penetrating manner, an optical cable reinforcement outlet (121) and a plurality of optical fiber branching outlets (122) are arranged on the tail cover (12), optical fibers (1001) of the optical cable (100) penetrate out through the optical fiber branching outlets (122), and reinforcements of the optical cable (100) penetrate out through the optical cable reinforcement outlets (121);

the fiber melting discs (2) are arranged in one-to-one correspondence with the fiber branch outlets (122), the number of the fibers (1001) in the fiber branch outlets (122) is the same as the number of the tail fiber interfaces (21) on the corresponding fiber melting disc (2), and the fibers (1001) extending out of the fiber branch outlets (122) are fixed on the tail fiber interfaces (21) in one-to-one correspondence;

the hoses (3) are arranged in one-to-one correspondence with the optical fiber branch outlets (122), the hoses (3) are sleeved on the optical fibers (1001) in the corresponding optical fiber branch outlets (122), and one ends of the hoses penetrate through the optical fiber branch outlets (122) and extend into the main body (11);

and the two ends of the branching device (1) are filled with the adhesive.

2. The fiber optic cable terminating branch structure of claim 1, wherein the fiber optic branch exits (122) are provided with three.

3. The fiber optic cable terminating branch structure according to claim 1, wherein the distance between the hose (3) and the stripped end face (1002) of the fiber optic cable (100) is greater than 1cm.

4. The fiber optic cable terminating branch structure as claimed in claim 1, wherein said tail cap (12) includes:

a first inner tube (123);

an outer tube (124), wherein the outer tube (124) is sleeved and fixed at one end of the first inner tube (123), the other end of the first inner tube (123) is inserted into the main body (11), and the outer tube (124) is abutted with the main body (11);

an inner plate (125) disposed within the first inner tube (123), the cable reinforcement outlet (121) and the fiber branching outlet (122) both disposed on the inner plate (125).

5. The fiber optic cable terminating branch structure as claimed in claim 4, wherein said outer tube (124) has an outer diameter that is the same as an outer diameter of said main body (11).

6. The fiber optic cable terminating branch structure as claimed in claim 5, wherein said first inner tube (123) is the same as said main body (11) inner diameter.

7. The fiber optic cable end-forming branching structure according to claim 1, wherein the branching unit (1) further comprises a second inner tube (13), the second inner tube (13) is disposed at an end of the main body (11) away from the tail cap (12), and the main body (11) is sleeved on the second inner tube (13).

8. The fiber optic cable terminating branch structure as claimed in claim 7, wherein said adhesive is an AB glue.

9. An optical cross box, characterized by comprising the optical cable end-forming branch structure according to any one of claims 1-8, and further comprising a housing (10), said optical cable end-forming branch structure being arranged within said housing (10).

10. Light box according to claim 9, characterized in that the diverter (1) is arranged at the inlet (101) of the housing (10).

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