CN216647888U - Optical cable with cable leakage function - Google Patents
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- CN216647888U CN216647888U CN202123442452.XU CN202123442452U CN216647888U CN 216647888 U CN216647888 U CN 216647888U CN 202123442452 U CN202123442452 U CN 202123442452U CN 216647888 U CN216647888 U CN 216647888U
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Abstract
The utility model provides an optical cable with a cable leakage function, and relates to the technical field of communication. The optical cable with the function of the leaky cable comprises a sheath layer, an outer conductor layer, a water blocking layer and a cable core; the restrictive coating parcel is in the outside of outer conductor layer, and outer conductor layer parcel is in the outside of cable core, and the water blocking layer is filled in the clearance between outer conductor layer and cable core, is provided with the slotted hole on the outer conductor layer, and the cable core includes optic fibre unit layer and inner conductor layer, and the cross sectional shape of inner conductor layer is circular, and inner conductor layer and outer conductor layer set up with one heart, and optic fibre unit layer sets up in the outside of inner conductor layer. The combination of the sheath layer, the outer conductor layer, the water blocking layer and the inner conductor layer can be used as a leakage cable, and the combination of the sheath layer, the outer conductor layer, the water blocking layer and the optical fiber unit layer can be used as a communication optical cable, so that the optical cable can realize two functions of the leakage cable and the communication optical cable, further the construction cost can be reduced, and the space occupied by the cable can be reduced.
Description
Technical Field
The utility model relates to the technical field of communication, in particular to an optical cable with a cable leakage function.
Background
The leakage cable has the functions of signal transmission and antenna, and can uniformly radiate and receive the controlled electromagnetic wave energy along the line by controlling the opening of the outer conductor, thereby realizing the coverage of the electromagnetic field blind area and achieving the purpose of smooth mobile communication. The leaky cable is mainly used for poor radio signal propagation such as tunnels, roadways, subways, underground buildings, mountainous areas and the like. In order to meet the transmission requirements of signals such as audio, video and data with long distance and large capacity under the environment, a communication optical cable is laid.
In the related art, the leaky cable and the communication optical cable are independently manufactured in the manufacturing process, and thus the leaky cable and the communication optical cable are separately laid in the laying process in the environments of tunnels, roadways, subways, underground buildings, mountainous areas, and the like.
However, the leaky cable and the communication cable are laid separately, which causes a problem of increasing construction costs.
SUMMERY OF THE UTILITY MODEL
The utility model provides an optical cable with a leakage cable function, which aims to solve the problem that construction cost is increased when a leakage cable and a communication optical cable are laid separately.
The utility model provides an optical cable with a leakage cable function, which comprises a sheath layer, an outer conductor layer, a water blocking layer and a cable core, wherein the sheath layer is arranged on the outer conductor layer;
the sheath layer is wrapped on the outer side of the outer conductor layer, the outer conductor layer is wrapped on the outer side of the cable core, the water blocking layer is filled in a gap between the outer conductor layer and the cable core, the cross sections of the sheath layer and the outer conductor layer are in a circular ring shape, and a slotted hole is formed in the outer conductor layer;
the cable core comprises optical fiber unit layers and an inner conductor layer, the cross section of the inner conductor layer is circular, the inner conductor layer and the outer conductor layer are concentrically arranged, and the optical fiber unit layers are arranged on the outer side of the inner conductor layer.
Optionally, the inner conductor layer comprises a copper layer and at least one steel wire, and the copper layer is wrapped on the outer side of the at least one steel wire;
the cross section diameter of inner conductor layer is 1.5 ~ 5mm, the thickness of copper layer is 0.2 ~ 1mm, the cross section diameter of steel wire is 1 ~ 2.5 mm.
Optionally, the number of the steel wires is multiple, multiple steel wires are twisted, and the copper layer is wrapped on the outer sides of the twisted steel wires.
Optionally, the optical fiber unit layer includes a plurality of optical fiber units, and the plurality of optical fiber units are arranged in a single layer or in multiple layers in a radial direction of the inner conductor layer.
Optionally, the optical fiber unit includes a loose tube and a plurality of optical fibers, different marks are disposed on the plurality of optical fibers, the plurality of optical fibers are twisted, and the loose tube is wrapped around the outer sides of the twisted plurality of optical fibers; or the like, or, alternatively,
the optical fiber unit comprises a loose tube and a plurality of optical fiber ribbons, the optical fiber ribbons are arranged in a stacked mode in parallel, the loose tube wraps the outer sides of the optical fiber ribbons, the optical fiber ribbons comprise a resin layer and a plurality of optical fibers, the optical fibers are arranged side by side, different marks are arranged on the optical fibers, and the resin layer wraps the outer sides of the optical fibers;
the mark is a color bar or a color ring, and the diameter of the loose tube is 1.5-3 mm.
Optionally, the optical fiber unit layer further includes a filling rope, and the filling rope and the plurality of optical fiber units are stranded outside the inner conductor layer with the inner conductor layer as a center.
Optionally, the outer conductor layer is a copper pipe, the copper pipe is provided with a plurality of slots, and the slots are uniformly spaced along the extending direction of the copper pipe.
Optionally, the cross section of the slot is perpendicular to the extending direction of the copper pipe; or the like, or, alternatively,
the cross section of the slotted hole is inclined to the extending direction of the copper pipe, and the included angle between the cross section of the slotted hole and the extending direction of the copper pipe is 15-30 degrees.
Optionally, the water-blocking layer is one of water-blocking powder, water-blocking yarn and water-blocking tape.
Optionally, the sheath layer is a flame-retardant polyethylene sheath, and the thickness of the flame-retardant polyethylene sheath is 1-2.5 mm.
The utility model provides an optical cable with a leakage cable function, which comprises a sheath layer, an outer conductor layer, a water blocking layer and a cable core, wherein the sheath layer is arranged on the outer conductor layer; the restrictive coating parcel is in the outside of outer conductor layer, and outer conductor layer parcel is in the outside of cable core, and the clearance between outer conductor layer and cable core is filled to the water blocking layer, and the cross sectional shape of restrictive coating and outer conductor layer is the ring form, is provided with the slotted hole on the outer conductor layer, and the cable core includes optic fibre unit layer and inner conductor layer, and the cross sectional shape of inner conductor layer is circular, and inner conductor layer and outer conductor layer set up with one heart, and optic fibre unit layer sets up in the outside of inner conductor layer. The combination of the sheath layer, the outer conductor layer, the water blocking layer and the inner conductor layer can be used as a leakage cable, and the combination of the sheath layer, the outer conductor layer, the water blocking layer and the optical fiber unit layer can be used as a communication optical cable, so that the optical cable can realize two functions of the leakage cable and the communication optical cable, further the construction cost can be reduced, and the space occupied by the cable can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of an optical cable with a leaky cable function according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the outer conductor layer shown in FIG. 1;
FIG. 3 is a cross-sectional view of a cable with leaky cable functionality according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of the optical fiber unit of FIG. 3;
fig. 5 is a schematic cross-sectional view of another optical cable having a leaky cable function according to an embodiment of the utility model.
Description of reference numerals:
10-a sheath layer;
20-an outer conductor layer;
201-slotted hole;
30-a water resistant layer;
41-optical fiber unit layer;
411-optical fiber unit;
4111-loose tube;
4112-an optical fiber;
4113-a resin layer;
412-a fill string;
42-inner conductor layer;
421-a copper layer;
422-steel wire;
43-a contact layer;
50-non-metallic reinforcement.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the related art, the leaky cable and the communication optical cable are independently manufactured in the manufacturing process, and thus the leaky cable and the communication optical cable are separately laid in the laying process in the environments of tunnels, roadways, subways, underground buildings, mountainous areas, and the like. However, the leaky cable and the communication cable are laid separately, which causes a problem of increasing construction costs.
In order to solve the problems, the utility model provides an optical cable with a leakage cable function, which can be used as a leakage cable through the combination of a sheath layer, an outer conductor layer, a water-blocking layer and an inner conductor layer, and can be used as a communication optical cable through the combination of the sheath layer, the outer conductor layer, the water-blocking layer and an optical fiber unit layer, so that the optical cable realizes two functions of the leakage cable and the communication optical cable, the construction cost can be reduced when the leakage cable and the communication optical cable need to be used simultaneously, and the occupied space of the cable can be reduced.
The optical cable with the function of the leaky cable provided by the embodiment of the utility model is described in detail with reference to specific embodiments.
Fig. 1 is a schematic cross-sectional view of an optical cable with a leaky cable function according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of the outer conductor layer in fig. 1.
As shown in fig. 1 and 2, an optical cable having a leaky cable function according to an embodiment of the present invention includes a sheath layer 10, an outer conductor layer 20, a water blocking layer 30, and a cable core.
Wherein, restrictive coating 10 wraps up in the outside of outer conductor layer 20, and the cross sectional shape of restrictive coating 10 is the ring form. Sheath layer 10 may be made of flame retardant polyethylene plastic or other flame retardant sheath materials in a flame retardant environment. Jacket layer 10 may be made of polyethylene plastic in environments where flame retardancy is not required. The thickness of the sheath layer 10 is determined as needed, and is not specifically set herein.
In some optional embodiments, the optical cable with the function of a leaky cable is applied in a flame-retardant environment, the sheath layer 10 is a flame-retardant polyethylene sheath, and the thickness of the flame-retardant polyethylene sheath is 1-2.5 mm.
The outer conductor layer 20 is wrapped on the outer side of the cable core, and the cross section of the outer conductor layer 20 is circular. The outer conductor layer 20 is provided with a slot 201, and the slot 201 is used for transmitting a part of electromagnetic energy transmitted in the optical cable with the function of leaking the cable to the external environment, and meanwhile, the external energy can also be transmitted into the optical cable with the function of leaking the cable.
The shape of the slot 201 may be rectangular, splayed, or inclined, and is not specifically provided here.
In some examples, the outer conductor layer 20 is a copper tube, and the copper tube is provided with a plurality of slots 201, and the plurality of slots 201 are uniformly spaced along an extending direction of the copper tube. The extending direction of the copper pipe is the length direction of the copper pipe. The cross section of the slot 201 may be perpendicular to the extension direction of the copper tube. In other implementations, the cross section of the slot 201 is inclined to the extending direction of the copper tube, and the included angle between the cross section of the slot 201 and the extending direction of the copper tube is 15-30 °. The cross section of the slot 201 is the circumferential surface of the slot 201.
The water-blocking layer 30 is filled in the gap between the outer conductor layer 20 and the cable core, and can improve the water-blocking property of the optical cable having a leaky cable function. The water-blocking layer 30 may be one or more of water-blocking powder, water-blocking yarn, and water-blocking tape.
The cable core includes optical fiber unit layers 41 and inner conductor layers 42, the cross-sectional shape of the inner conductor layers 42 is circular, the inner conductor layers 42 are concentrically arranged with the outer conductor layers 20, and the optical fiber unit layers 41 are arranged outside the inner conductor layers 42.
It should be noted that the optical fiber unit layers 41 may be twisted outside the inner conductor layer 42, or may not be twisted outside the inner conductor layer 42, and no specific arrangement is made here.
The combination of sheath layer 10, outer conductor layer 20, water blocking layer 30 and inner conductor layer 42 can regard as the leakage cable to use, and sheath layer 10, outer conductor layer 20, water blocking layer 30 and the 41 combination of optic fibre unit layer can regard as communication optical cable to use to make the optical cable that possesses the leakage cable function realize leaking two kinds of functions of cable and communication optical cable, and then can reduce construction cost when needs use leakage cable and communication optical cable simultaneously, but also can reduce the space that the cable occupy.
The inner conductor layer 42 is disposed concentrically with the outer conductor layer 20, so that transmission parameters of the optical cable having the leaky cable function can be made uniform and stable.
Optionally, the inner conductor layer 42 includes a copper layer 421 and at least one steel wire 422, and the copper layer 421 is wrapped outside the at least one steel wire 422. With this arrangement, when the optical cable having the function of a leaky cable is used as a communication cable, the inner conductor layer 42 can serve as a reinforcing member, and the tensile strength and bending strength of the optical cable having the function of a leaky cable can be improved.
The copper layer 421 may be welded to the outer side of the at least one steel wire 422 by a welding method, or may be electroplated to the outer side of the at least one steel wire 422 by an electroplating method, which is not specifically set herein.
The cross-sectional diameter of the inner conductor layer 42 is determined as needed, and is not specifically set here. The thickness of the copper layer 421 is determined as needed, and is not specifically set herein. In some examples, when the optical cable having the function of the leaky cable is under an installation tension of 1000 to 5000N, the inner conductor layer 42 may have a cross-sectional diameter of 1.5 to 5mm, the copper layer 421 may have a thickness of 0.2 to 1mm, and the steel wire 422 may have a cross-sectional diameter of 1 to 2.5 mm.
Further, the number of the steel wires 422 of the inner conductor layer 42 is multiple, the multiple steel wires 422 are twisted, and the copper layer 421 is wrapped on the outer sides of the twisted multiple steel wires 422. In some examples, the twisting of the plurality of steel wires 422 may be SZ twisting.
Optionally, as shown in fig. 5, the cable core further includes an abutting layer 43, and the abutting layer 43 is wrapped outside the copper layer 421. By abutting the abutting layer 43 against the optical fiber unit layer 41, the situation that the inner conductor layer 42 has a small diameter and cannot abut against the optical fiber unit layer 41 can be avoided, and the stability of the optical cable having the function of a leaky cable can be improved.
The material of the contact layer 43 may be polyethylene or polypropylene, and is not specifically provided here.
Alternatively, as shown in fig. 1, the optical fiber unit layer 41 includes a plurality of optical fiber units 411, and the plurality of optical fiber units 411 are arranged in a single layer or in multiple layers in the radial direction of the inner conductor layer 42.
Wherein each layer of the optical fiber units 411 in the radial direction of the inner conductor layer 42 is arranged along the circumferential direction.
In some examples, the optical fiber unit 411 includes a loose tube 4111 and a plurality of optical fibers 4112, the plurality of optical fibers 4112 are stranded, and the loose tube 4111 is wrapped around the stranded plurality of optical fibers 4112. The stranding of the plurality of optical fibers 4112 may employ SZ stranding.
The optical fiber 4112 may be a single mode optical fiber or a multimode optical fiber, and is not specifically configured here.
FIG. 3 is a cross-sectional view of another optical cable having a leaky cable function according to the embodiment of the utility model; fig. 4 is a schematic structural view of the optical fiber unit in fig. 3.
In other examples, as shown in fig. 3 and 4, the optical fiber unit 411 includes a loose tube 4111 and a plurality of optical fiber ribbons, the plurality of optical fiber ribbons are arranged in a parallel stack, the loose tube 4111 is wrapped around the outer sides of the plurality of optical fiber ribbons, the optical fiber ribbons include a resin layer 4113 and a plurality of optical fibers 4112, the plurality of optical fibers 4112 are arranged side by side, and the resin layer 4113 is wrapped around the outer sides of the plurality of optical fibers 4112. The optical fiber 4112 in this example is the same in structure as the optical fiber in the above example, and will not be described in detail.
Optionally, in order to distinguish the plurality of optical fibers 4112, different markings are provided on the plurality of optical fibers 4112.
In some alternative embodiments, the indicia may be a color bar or a color ring. The plurality of optical fibers 4112 may distinguish the plurality of different optical fibers 4112 by the shape of the color bars, the number of color bars, the shape of the color circle, the number of color circles, and the like.
In other alternative embodiments, the plurality of optical fibers 4112 are differentiated by having different colors as markings on the outside of the entirety of the plurality of optical fibers 4112.
Optionally, in order to further improve the water resistance of the optical cable with the function of the leaky cable, the optical fiber unit 411 further includes a fiber paste, and the fiber paste is filled in the loose tube 4111. The thickness of the loose tube 4111 is determined as needed, and is not specifically set herein. The diameter of the loose tube 4111 is 1.5-3 mm.
Optionally, the optical fiber unit layer 41 further includes a filling rope 412, and the filling rope 412 and the plurality of optical fiber units 411 are stranded outside the inner conductor layer 42 with the inner conductor layer 42 as a center. In this way, when the number of the plurality of optical fiber units 411 cannot ensure the roundness on the outer side of the inner conductor layer 42, the number of the filler ropes 412 is increased to ensure the roundness.
The cross-sectional shape of the fill string 412 is circular. The diameter of the filling string 412 is the same as that of the optical fiber unit 411. The filler cord 412 is made of a non-metallic material. The number of filling strings 412 can be set according to actual needs.
In an alternative embodiment, the optical fiber unit layer 41 includes four optical fiber units 411 and one filling cord 412, and one filling cord 412 and four optical fiber units 411 are stranded outside the inner conductor layer 42 centering on the inner conductor layer 42.
Fig. 5 is a schematic cross-sectional view of another optical cable with a leaky cable function according to an embodiment of the utility model.
Optionally, as shown in fig. 5, the optical cable with the function of a leaky cable further includes a non-metal reinforcement 50, and the non-metal reinforcement 50 is disposed between the outer conductor layer 20 and the cable core. So set up, can strengthen the tensile strength of the optical cable that possesses the leaky cable function.
The material of the non-metal reinforcement 50 may be glass fiber yarn or aramid yarn. The non-metallic reinforcement 50 may be circular, square, etc. in shape and is not specifically provided herein.
The number of the non-metal reinforcing members 50 may be one or more, and is not specifically set herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An optical cable with a function of a leaky cable is characterized by comprising a sheath layer, an outer conductor layer, a water blocking layer and a cable core;
the sheath layer is wrapped on the outer side of the outer conductor layer, the outer conductor layer is wrapped on the outer side of the cable core, the water blocking layer is filled in a gap between the outer conductor layer and the cable core, the cross sections of the sheath layer and the outer conductor layer are in a circular ring shape, and a slotted hole is formed in the outer conductor layer;
the cable core comprises optical fiber unit layers and an inner conductor layer, the cross section of the inner conductor layer is circular, the inner conductor layer and the outer conductor layer are concentrically arranged, and the optical fiber unit layers are arranged on the outer side of the inner conductor layer.
2. The optical cable with the function of the leaky cable as claimed in claim 1, wherein said inner conductor layer includes a copper layer and at least one steel wire, said copper layer being wrapped around an outer side of said at least one steel wire;
the cross section diameter of inner conductor layer is 1.5 ~ 5mm, the thickness of copper layer is 0.2 ~ 1mm, the cross section diameter of steel wire is 1 ~ 2.5 mm.
3. The optical cable with a leaky cable function as claimed in claim 2, wherein the number of the steel wires is plural, the plural steel wires are twisted, and the copper layer is wrapped around the outer sides of the twisted plural steel wires.
4. The optical cable with a leaky cable function as claimed in claim 1, wherein the optical fiber unit layer includes a plurality of optical fiber units, and the plurality of optical fiber units are arranged in a single layer or in multiple layers in a radial direction of the inner conductor layer.
5. The optical cable with a leaky cable function as claimed in claim 4, wherein said optical fiber unit includes a loose tube and a plurality of optical fibers, different marks are disposed on said plurality of optical fibers, said plurality of optical fibers are arranged in a twisted manner, and said loose tube is wrapped around the outer sides of said plurality of twisted optical fibers; or the like, or, alternatively,
the optical fiber unit comprises a loose tube and a plurality of optical fiber ribbons, the optical fiber ribbons are arranged in a stacked mode in parallel, the loose tube wraps the outer sides of the optical fiber ribbons, the optical fiber ribbons comprise a resin layer and a plurality of optical fibers, the optical fibers are arranged side by side, different marks are arranged on the optical fibers, and the resin layer wraps the outer sides of the optical fibers;
the mark is a color bar or a color ring, and the diameter of the loose tube is 1.5-3 mm.
6. The optical cable with a leaky cable function as claimed in claim 4, wherein the optical fiber unit layer further includes a filling cord, and the filling cord and the plurality of optical fiber units are twisted outside the inner conductor layer with the inner conductor layer as a center.
7. The optical cable with the function of the leaky cable as claimed in claim 1, wherein said outer conductor layer is a copper tube, and a plurality of said slots are formed in said copper tube, and are uniformly spaced along an extending direction of said copper tube.
8. The optical cable with a leaky cable function as claimed in claim 7, wherein a cross section of said slot is perpendicular to an extending direction of said copper pipe; or the like, or, alternatively,
the cross section of the slot hole is inclined to the extending direction of the copper pipe, and the included angle between the cross section of the slot hole and the extending direction of the copper pipe is 15-30 degrees.
9. The optical cable with the function of the leaky cable as claimed in any one of claims 1 to 8, wherein the cable core further includes an abutting layer, the abutting layer is disposed between the optical fiber unit layers and the inner conductor layer, the abutting layer is wrapped outside the inner conductor layer, and the abutting layer abuts against the optical fiber unit layers;
the water-blocking layer is one or more of water-blocking powder, water-blocking yarn and water-blocking tape;
the sheath layer is a flame-retardant polyethylene sheath, and the thickness of the flame-retardant polyethylene sheath is 1-2.5 mm.
10. The optical cable with the leaky cable function as claimed in any of claims 1 to 8, further comprising a non-metallic reinforcement, wherein said non-metallic reinforcement is disposed between said outer conductor layer and said cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123442452.XU CN216647888U (en) | 2021-12-30 | 2021-12-30 | Optical cable with cable leakage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123442452.XU CN216647888U (en) | 2021-12-30 | 2021-12-30 | Optical cable with cable leakage function |
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| Publication Number | Publication Date |
|---|---|
| CN216647888U true CN216647888U (en) | 2022-05-31 |
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| CN202123442452.XU Active CN216647888U (en) | 2021-12-30 | 2021-12-30 | Optical cable with cable leakage function |
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| CN (1) | CN216647888U (en) |
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2021
- 2021-12-30 CN CN202123442452.XU patent/CN216647888U/en active Active
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