CN212515151U - Optical cable and optical cable assembly - Google Patents
Optical cable and optical cable assembly Download PDFInfo
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- CN212515151U CN212515151U CN202021337346.8U CN202021337346U CN212515151U CN 212515151 U CN212515151 U CN 212515151U CN 202021337346 U CN202021337346 U CN 202021337346U CN 212515151 U CN212515151 U CN 212515151U
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Abstract
The utility model relates to an optical cable technical field discloses an optical cable and optical cable subassembly. The optical cable includes a central unit, an armor unit, and an outer jacket. The central unit comprises an optical fiber and an inner protective layer, and the outer side of the optical fiber is sleeved with the inner protective layer. The armor unit comprises a metal armor pipe and an insulating film, the metal armor pipe is sleeved outside the central unit, the insulating film is sleeved outside the metal armor pipe, and the outer protective layer is sleeved outside the insulating film. The utility model discloses protect optic fibre, avoided the inside optic fibre of optical cable to be destroyed, also improved optical cable bending resistance, resistance to compression, insulating and prevent gnawing the ability of stinging, improved the insulating ability of optical cable, the effectual outside electric current that has prevented the optical cable inwards flows in and contacts inside optic fibre, has prolonged the life of optic fibre.
Description
Technical Field
The utility model relates to an optical cable field especially relates to an optical cable and optical cable subassembly.
Background
A mobile base station largely uses a distributed architecture, wherein an RRU (radio remote unit) and a BBU (baseband processing unit) need to be connected by an optical cable component. The RRU is a remote module and is connected to the base station side near-end module BBU via an optical cable assembly. Aiming at the severe outdoor wiring environment, in order to ensure the reliability and stability of the connection of the optical cable assembly between the indoor and the outdoor, the compression resistance, the tensile resistance, the insulation and the biting prevention performance of the optical cable are required to be improved, so that the optical cable assembly can be well communicated from an outdoor antenna end to an indoor machine room.
Accordingly, there is a need for a fiber optic cable and fiber optic cable assemblies that address the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an optical cable and optical cable subassembly, the inside optic fibre of having avoided the optical cable is destroyed, has protected optic fibre, has also improved optical cable bending resistance, resistance to compression, insulating and prevent gnawing the ability of stinging, has improved the insulating ability of optical cable, and the effectual outside electric current of having prevented the optical cable inwards flows in and contacts inside optic fibre, has prolonged the life of optic fibre.
To achieve the purpose, the utility model adopts the following technical proposal:
an optical cable, comprising:
the central unit comprises an optical fiber and an inner protective layer, and the inner protective layer is sleeved on the outer side of the optical fiber;
the armor unit comprises a metal armor pipe and an insulating film, the metal armor pipe is sleeved outside the central unit, and the insulating film is sleeved outside the metal armor pipe;
the outer protective layer is sleeved outside the insulating film.
Preferably, the optical cable further includes a strength unit disposed between the central unit and the sheathing unit.
Preferably, the reinforcing unit comprises an aramid fiber layer, and the aramid fiber layer is enclosed outside the inner protective layer.
Preferably, the reinforcing unit further comprises a middle sheath disposed between the aramid layer and the metal armor tube.
Preferably, a plurality of grooves are formed in the circumferential direction of the outer circumferential side of the metal armor pipe, each groove is formed in the axial direction of the metal armor pipe, and the plurality of grooves are arranged at intervals and extend from one end of the metal armor pipe to the other end of the metal armor pipe.
Preferably, the metal armor pipe comprises a plurality of steel belts, the steel belts are arranged along the axial direction of the metal armor pipe, two ends of the steel belts are connected in sequence, and the steel belts are provided with a plurality of grooves.
A fiber optic cable assembly comprising a fiber optic cable as described above, the fiber optic cable comprising a plurality of the optical fibers.
Preferably, the optical fiber is connected with a connector at an end of the optical cable assembly.
Preferably, the optical cable assembly further comprises a primary splitter, the optical cable passes through the primary splitter, and the primary splitter is used for splitting the optical cable into a plurality of first branch optical cables.
Preferably, the cable assembly further comprises a secondary splitter, the first branch cable passing through the secondary splitter, the secondary splitter being configured to split the first branch cable into a plurality of second branch cables.
The utility model has the advantages that:
the embodiment of the utility model provides an optical cable, central unit set up interior sheath and can protect optic fibre, have prolonged the life of optic fibre. The armor unit is provided with the metal armor pipe, so that the mechanical strength of the optical cable is improved, the optical fiber is effectively protected, the optical fiber in the optical cable is prevented from being damaged, and the bending resistance, compression resistance and gnawing prevention capability of the optical cable are also improved. The insulating film is arranged on the outer side of the metal armor pipe, so that the insulating capability of the optical cable is improved, the current outside the optical cable is effectively prevented from flowing inwards to contact with the internal optical fiber, and the optical fiber is effectively protected. The outer protective layer is arranged, and further the optical fiber is protected.
Drawings
Fig. 1 is a schematic structural diagram of an optical cable according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a metal armor pipe according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cable assembly according to an embodiment of the present invention.
In the figure:
100. an optical cable; 101. a first drop cable; 102. a second drop cable; 103. a connector;
201. a primary splitter; 202. a secondary splitter;
10. a central unit; 20. a reinforcement unit; 30. an armor unit; 40. an outer jacket;
1. an optical fiber; 2. an inner protective layer; 3. an aramid fiber layer; 4. a middle protective layer; 5. a metal armor tube; 51. a groove; 6. an insulating film.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment provides an optical cable, has protected optic fibre, has avoided the inside optic fibre of optical cable to be destroyed, has also improved optical cable bending resistance, resistance to compression and anti-electromagnetic interference's ability, has improved the insulating ability of optical cable, and the effectual outside electric current of having prevented the optical cable inwards flows in and contacts inside optic fibre, has prolonged the life of optic fibre.
Specifically, as shown in fig. 1, the optical cable includes a central unit 10, an armor unit 30, and an outer sheath 40. The central unit 10 includes an optical fiber 1 and an inner sheath 2, and the inner sheath 2 is sleeved outside the optical fiber 1. The armor layer 30 comprises a metal armor tube 5 and an insulating film 6, wherein the metal armor tube 5 is sleeved outside the central unit 10, and the insulating film 6 is sleeved outside the metal armor tube 5. The outer protective layer 40 is disposed outside the insulating film 6. The arrangement of the inner protective layer 2 in the central unit 10 can protect the optical fiber 1, and the service life of the optical fiber 1 is prolonged. The metal armor tube 5 is arranged on the armor unit 30, so that the mechanical strength of the optical cable 100 is improved, the optical fiber 1 is effectively protected, the optical fiber 1 in the optical cable 100 is prevented from being damaged, and the bending resistance, the compression resistance and the biting prevention capability of the optical cable 100 are also improved. The insulating film 6 is arranged outside the metal armor tube 5, so that the insulating capability of the optical cable 100 is improved, the current outside the optical cable 100 is effectively prevented from flowing inwards to contact the inner optical fiber 1, and the optical fiber 1 is effectively protected. The outer jacket 40 is provided to further protect the optical fiber 1.
In this embodiment, the inner sheath 2 is made of LSZH (Low smoke zero halogen) material, and is extruded and cured on the outer side of the optical fiber bundle to form a loose sheath with an outer diameter of 3.0 mm.
The outer protective layer 40 is made of polyethylene and is formed by high-temperature extrusion molding, the processing temperature is 160-195 ℃, and the outer protective layer is good in flexibility and wear-resistant. Flame retardant polyethylene may also be used to improve the flame retardant properties of the outer jacket 40.
Preferably, as shown in fig. 2, a plurality of grooves 51 are circumferentially formed on the outer circumferential side of the metal sheath tube 5, and the grooves 51 improve the pressure resistance of the optical cable 100. In this embodiment, each groove 51 is arranged along the axial direction of the metal armor pipe 5, the plurality of grooves 51 are arranged at intervals and extend from one end of the metal armor pipe 5 to the other end, and the grooves 51 are arranged along the axial direction of the metal armor pipe 5, so that the machining process is simplified.
In other embodiments, the grooves 51 may be arranged on the surface of the metal clad pipe 5 in a lattice pattern intersecting with each other, or each groove 51 may be arranged obliquely to the axial direction of the metal clad pipe 5, and a plurality of grooves 51 may be arranged at intervals and extend from one end to the other end of the metal clad pipe 5 in the circumferential direction. The groove 51 may be disposed in other ways, and is not limited herein.
In this embodiment, metal armour pipe 5 includes many steel bands, and many steel bands set up and both ends link to each other in proper order along metal armour pipe 5's axial, are equipped with a plurality of recesses 51 on the steel band, and metal armour pipe 5 is formed by the steel band concatenation, has simplified metal armour pipe 5's manufacturing process. The depth of the groove 51 on the steel belt is 0.45 plus or minus 0.02 mm.
Preferably, fiber optic cable 100 further includes strength members 20 for increasing the tensile strength of fiber optic cable 100. The strength member 20 is disposed between the central unit 10 and the sheathing unit 30, and further enhances mechanical properties of the optical cable 100, preventing the optical cable 100 from being damaged.
Specifically, strengthen unit 20 and include aramid fiber layer 3, aramid fiber layer 3 encloses and locates the inner sheath 2 outside, has improved optical cable 100 tensile strength.
Further, strengthen unit 20 and still include well sheath 4, well sheath 4 sets up between aramid fiber layer 3 and metal armour pipe 5, and well sheath 4 can protect aramid fiber layer 3, has guaranteed optical cable 100's tensile strength.
In this embodiment, the middle protective layer 4 is made of LSZH (Low smoke zero halogen) material, and is formed by high temperature extrusion molding with a wall thickness of 1.4 mm.
The present embodiments also provide a fiber optic cable assembly. Fiber optic cable assemblies include fiber optic cable 100 as described above. Cable 100 includes a plurality of optical fibers 1, improving the ability of the cable assembly to resist bending, compression, insulation, and gnawing.
Preferably, as shown in fig. 3, the optical fiber 1 is connected with a connector 103 at the end of the cable assembly, so that the cable assembly can be quickly inserted and pulled out for connection.
Preferably, the cable assembly further comprises a primary splitter 201. The optical cable 100 is inserted into the first-stage splitter 201, and the optical cable 100 is led out of the plurality of first branch optical cables 101 from the outlet of the first-stage splitter 201.
Preferably, the cable assembly further comprises a secondary splitter 202, the first branch cable 101 is threaded through the secondary splitter 202, and the first branch cable 101 exits the plurality of second branch cables 102 from the outlet of the secondary splitter 202.
In this embodiment, one end of the optical cable assembly is sequentially provided with a first-stage splitter 201 and a second-stage splitter 202, where the first-stage splitter 201 is a branching and branching device, and the second-stage splitter 202 is a branching and branching device, so as to divide the multi-core optical cable into single-core optical cables through two-stage branching. The other end of the optical cable component is provided with a first-level splitter 201, wherein the first-level splitter 201 is an eight-in-one splitter, and the multi-core optical cable is directly split into a single-core optical cable through the first-level branch. One end is a hierarchical branch, and the other end is provided with only one-level branch, so that different compression-resistant and tensile requirements of the optical cable assembly are met, and the cost of repeated wiring and later maintenance is reduced.
In this embodiment, the optical cable assembly further includes a sleeve, the outer diameter of the sleeve is 2.0mm, and the outer side of each optical fiber 1 led out from the primary splitter 201 is sleeved with the sleeve, that is, each optical fiber 1 in the first branch optical cable 101 is provided with the sleeve. And the jacketed optical fiber 1 is passed through the secondary splitter 202, i.e., each optical fiber 1 in the second branch cable 102 is also jacketed.
In the present embodiment, 8 optical fibers 1 are disposed inside the optical cable 100, and the optical fibers 1 are all colored optical fibers. The 8 fibers 1 are coated with two colors, one color for every 4 fibers 1. And the cable assembly further includes a first jacket and a second jacket. The first sheath is an armored hollow pipe with the outer diameter of 7.0mm and comprises an outer protective layer 40, an armored unit 30 and a reinforcing layer 20 which are sequentially arranged from outside to inside. The second sheath is a spiral pipe with the outer diameter of 3.0 mm.
To facilitate understanding, the process of making a cable assembly using cable 100 provided in the present embodiment is as follows:
in the first step, the optical cable 100 is stripped from both ends, the outer sheath 40, the sheathing unit 30, the inner sheath 2, and the middle sheath 4 are removed, and the optical fiber 1 and the aramid fiber layer 3 are remained. The aramid fiber layer 3 is turned over the outer sheath 40.
And secondly, penetrating one end of the optical cable 100 into a one-to-two first-stage splitter 201, and fixing the first-stage splitter 201 at the turning position of the aramid fiber layer 3. The optical fibers 1 of the optical cable 100 pass through the primary splitter 201, and a sleeve is sleeved outside each optical fiber 1 at the outlet of the primary splitter 201. Cable 100 is split into two first branch cables 101 by this primary splitter 201, i.e. 8 optical fibers 1 in cable 100 are divided equally into two groups by color, with 4 optical fibers 1 in each first branch cable 101. A first sheath is provided outside each first branch optical cable 101.
And thirdly, stripping one end of the first branch optical cable 101, which is far away from the first-stage splitter 201, removing the outer protective layer 40, the armor unit 30 and the middle protective layer 4 of the first sheath, and reserving the optical fiber 1, the sleeve and the aramid fiber layer 3. The aramid fiber layer 3 is turned over the outer sheath 40.
And fourthly, penetrating the optical fiber 1 with the sleeve in one end stripped by the first branched optical cable 101 in the third step into a four-in-one secondary splitter 202, and fixing the secondary splitter 202 at the turning position of the aramid fiber layer 3. The first branch cable 101 is divided into four second branch cables 102 by the secondary splitter 202, that is, 4 optical fibers 1 in the first branch cable 101 are divided into four groups, and 1 optical fiber 1 is provided in each second branch cable 102. A second jacket is provided outside each second branch cable 102.
And fifthly, stripping one end of the second branch optical cable 102 far away from the secondary splitter 202 in the previous step, removing the second sheath and the sleeve, only retaining the optical fiber 1, and fixedly connecting the connector 103 at the end part of the optical fiber 1.
Sixthly, the other end of the optical cable 100 is inserted into a one-eighth first-stage splitter 201, and the first-stage splitter 201 is fixed at the turning position of the aramid fiber layer 3. The optical fibers 1 of the optical cable 100 pass through the primary splitter 201, and a jacket is provided outside each optical fiber 1 at the outlet of the primary splitter 201. Cable 100 is split into eight first branch cables 101 by this primary splitter 201, and 8 optical fibers 1 in cable 100 are split into eight groups, with 1 optical fiber 1 in each first branch cable 101. A second sheath is provided outside each first branch optical cable 101.
And seventhly, stripping one end, away from the primary splitter 201, of the first branch optical cable 101 in the sixth step, removing the second sheath and the sleeve, only retaining the optical fiber 1, and fixedly connecting the connector 103 to the end part of the optical fiber 1.
In this embodiment, when the primary splitter 201 is fixed to the optical cable 100 or the secondary splitter 202 is fixed to the first branch optical cable 101, epoxy glue is used for bonding, and glue is poured into the splitter, so that the waterproof capability of the optical cable assembly is further improved.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An optical cable, comprising:
the optical fiber connector comprises a central unit (10), wherein the central unit (10) comprises an optical fiber (1) and an inner protective layer (2), and the inner protective layer (2) is sleeved outside the optical fiber (1);
the armor unit (30), the armor unit (30) comprises a metal armor pipe (5) and an insulating film (6), the metal armor pipe (5) is sleeved outside the central unit (10), and the insulating film (6) is sleeved outside the metal armor pipe (5);
and the outer protective layer (40) is sleeved outside the insulating film (6).
2. Optical cable according to claim 1, characterized in that it further comprises a reinforcing unit (20), said reinforcing unit (20) being arranged between said central unit (10) and said armouring unit (30).
3. Optical cable according to claim 2, characterized in that the reinforcement unit (20) comprises an aramid layer (3), the aramid layer (3) being enclosed outside the inner sheath (2).
4. Optical cable according to claim 3, characterized in that said reinforcing unit (20) further comprises a middle sheath (4), said middle sheath (4) being arranged between said aramid layer (3) and said metal sheath tube (5).
5. Optical cable according to claim 1, characterized in that the metal sheath tube (5) is provided with a plurality of grooves (51) on the outer circumferential side in the circumferential direction, each groove (51) is arranged in the axial direction of the metal sheath tube (5), and the plurality of grooves (51) are arranged at intervals and extend from one end to the other end of the metal sheath tube (5).
6. Optical cable according to claim 5, characterized in that said metal sheath (5) comprises a plurality of steel strips axially arranged along said metal sheath (5) and connected in series at each end, said steel strips being provided with a plurality of said grooves (51).
7. A cable assembly, comprising a cable (100) according to any one of claims 1 to 6, said cable (100) comprising a plurality of said optical fibers (1).
8. A cable assembly according to claim 7, wherein the optical fibre (1) is connected to a connector (103) at an end of the cable assembly.
9. A cable assembly according to claim 7, further comprising a primary splitter (201), the cable (100) being routed through the primary splitter (201), the primary splitter (201) being configured to split the cable (100) into a plurality of first branch cables (101).
10. The fiber optic cable assembly of claim 9, further comprising a secondary splitter (202), the first drop cable (101) being disposed through the secondary splitter (202), the secondary splitter (202) being configured to split the first drop cable (101) into a plurality of second drop cables (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021337346.8U CN212515151U (en) | 2020-07-09 | 2020-07-09 | Optical cable and optical cable assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021337346.8U CN212515151U (en) | 2020-07-09 | 2020-07-09 | Optical cable and optical cable assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212515151U true CN212515151U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021337346.8U Active CN212515151U (en) | 2020-07-09 | 2020-07-09 | Optical cable and optical cable assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212515151U (en) |
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2020
- 2020-07-09 CN CN202021337346.8U patent/CN212515151U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230421 Address after: No. 10, Gongye North Road, Songshanhu science and Technology Industrial Park, Dongguan City, Guangdong Province 523000 Patentee after: GUANGDONG HENGTONG OPTIC-ELECTRIC TECHNOLOGY Co.,Ltd. Patentee after: HENGTONG OPTIC-ELECTRIC Co.,Ltd. Address before: No. 10, Gongye North Road, Songshanhu science and Technology Industrial Park, Dongguan City, Guangdong Province 523000 Patentee before: GUANGDONG HENGTONG OPTIC-ELECTRIC TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |