CN218351147U - Optical fiber composite data cable - Google Patents
Optical fiber composite data cable Download PDFInfo
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- CN218351147U CN218351147U CN202222953310.8U CN202222953310U CN218351147U CN 218351147 U CN218351147 U CN 218351147U CN 202222953310 U CN202222953310 U CN 202222953310U CN 218351147 U CN218351147 U CN 218351147U
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Abstract
The utility model discloses a compound data cable of optic fibre relates to communication data cable technical field, include: the cable comprises a cable core and a sheath outside the cable core; the cable core comprises optical fibers, a plurality of twisted pairs and an insulating framework; the twisted pair is formed by twisting two insulated core wires in pairs, wherein each insulated core wire comprises a conductor and an insulating layer outside the conductor; the insulation framework is a framework which extends outwards to form a plurality of equal-length frame bodies through a circle center, the cross section of each frame body is rectangular, and the optical fibers or the single twisted pair wires are fixed between every two frame bodies. The utility model provides an optical fiber composite data cable for solve the unsmooth in current optical fiber composite data cable surface, lead to the unstable technical problem of cable transmission signal.
Description
Technical Field
The utility model relates to a communication data cable technical field especially relates to a compound data cable of optic fibre.
Background
At present, with the rapid development of network information and the construction of smart cities, ubiquitous internet-of-things connecting components are connected with various intelligent devices to collect, manage and analyze data generated by the devices. Data cables play an important role in network signal transmission as an important medium for transmitting information between each device and a server through integrated wiring. The optical fiber composite data cable adopting the twisted pair wire and optical fiber mixed mode can be used for cable communication and optical fiber communication.
In order to prevent the twisted pairs and the optical fibers from interfering with each other, the conventional optical fiber composite data cable adopts a plurality of twisted pairs which are symmetrically isolated by a cross-shaped framework, the optical fibers are arranged in a gap between two of the twisted pairs and a cable sheath, and the surface of the cable formed after twisting is not round due to the uneven structure in a cable core, so that the transmission signal of the cable is unstable.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model discloses optic fibre composite data cable for solve current optic fibre composite data cable surface and be not round, lead to the unstable technical problem of cable transmission signal. The utility model can meet the signal transmission requirements of comprehensive twisted pair wires on high bandwidth and high transmission speed, can also carry out length positioning, and can carry out fault positioning or measure the total length of a line under the condition that a cable is damaged or disconnected; meanwhile, the position of the short circuit of the cable can be judged.
The embodiment of the utility model provides an optical fiber composite data cable, include: the cable comprises a cable core and a sheath outside the cable core;
the cable core comprises an optical fiber, a plurality of twisted pairs and an insulating framework;
the twisted pair is formed by twisting two insulated core wires in pairs, wherein each insulated core wire comprises a conductor and an insulating layer outside the conductor;
the insulation framework is a framework which extends outwards from a circle center to form a plurality of equal-length frame bodies, the cross section of each frame body is rectangular, and the optical fibers or the single twisted pair wires are fixed between every two frame bodies.
Preferably, the conductor is stranded from a plurality of wires.
Preferably, the metal wire comprises a soft copper wire or a copper-clad aluminum magnesium alloy wire.
Preferably, the insulating layer is a solid polyolefin insulating layer or a foamed polyolefin insulating layer.
Preferably, the insulation core wire is longitudinally wrapped with an aluminum-plastic composite shielding tape.
Preferably, the optical fiber is a single mode optical fiber.
Preferably, the cabling pitch of the cable core is 50 mm-70 mm.
Preferably, a moisture-proof layer is arranged between the cable core and the sheath;
the moisture-proof layer is formed by wrapping the cable core with a non-hygroscopic polyester tape.
Preferably, a shielding layer is included between the moisture barrier and the sheath;
the shielding layer is formed by longitudinally wrapping an aluminum foil total shielding belt outside the moisture-proof layer.
Preferably, a drainage line is arranged between the shielding layer and the sheath, and the drainage line is connected with the shielding layer.
The utility model provides an optical fiber composite data cable has following advantage:
the method comprises the following steps: the cable comprises a cable core and a sheath outside the cable core;
the cable core comprises optical fibers, a plurality of twisted pairs and an insulating framework;
the twisted pair is formed by twisting two insulated core wires in pairs, wherein each insulated core wire comprises a conductor and an insulating layer outside the conductor;
the insulation framework is a framework which extends outwards from a circle center to form a plurality of equal-length frame bodies, the cross section of each frame body is rectangular, and the optical fibers or the single twisted pair wires are fixed between every two frame bodies.
The utility model discloses insulating skeleton in the well cable core has many cross sections that outwards extend from a centre of a circle to be rectangular support body, fixed optic fibre or single twisted pair line between two liang of support bodies, separate a plurality of twisted pair lines and optic fibre each other, avoid crosstalk each other, and stabilize the position of a plurality of twisted pair lines and optic fibre, a plurality of twisted pair lines and optic fibre form the cable core with the same transposition with same centre of a circle to the transposition, every transposition twisted pair line's percentage of elongation is the same, many support bodies of insulating skeleton are isometric, the even compactness of structure in the cable core, the surface rounding of cable core, the cable that the sheath that covers the extrusion molding and form outside the cable core obtained, the stability of cable transmission signal has been promoted.
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 described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an optical fiber composite data cable provided in an embodiment of the present invention;
in the figure: 1. a sheath; 2. a conductor; 3. an insulating layer; 4. an insulating framework; 5. a cable core; 6. a shielding layer; 7. an optical fiber; 8. and (4) twisting the wires.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described clearly and completely, and it is obvious that the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus should not be construed as limiting the embodiments of the present invention.
In the description of the embodiments of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" should be broadly construed and interpreted as including, for example, either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
The embodiment of the utility model discloses optical fiber composite data cable for solve the unsmooth in current optical fiber composite data cable surface, lead to the unstable technical problem of cable transmission signal.
Referring to fig. 1, an optical fiber composite data cable includes: the cable core 5 and the sheath 1 outside the cable core 5;
the cable core 5 comprises an optical fiber 7, a plurality of twisted pairs 8 and an insulating framework 4;
the twisted pair 8 is formed by twisting two insulated core wires (not shown in the figure) in pairs, wherein each insulated core wire comprises a conductor 2 and an insulating layer 3 outside the conductor 2;
the insulating frame 4 is a frame with a plurality of frames with equal length extending outwards from a circle center, the cross section of each frame is rectangular, and an optical fiber 7 or a single twisted pair 8 is fixed between every two frames.
It should be noted that, the insulation frame 4 in the cable core 5 has a plurality of frame bodies with rectangular cross sections extending outwards from a circle center, the optical fiber 7 or a single twisted pair 8 is fixed between every two frame bodies, the twisted pair 8 and the optical fiber 7 are isolated from each other, crosstalk between the twisted pair 8 and the optical fiber 7 is avoided, and the positions of the twisted pair 8 and the optical fiber 7 are stabilized, the twisted pair 8 and the optical fiber 7 are twisted in the same twisting direction with the same circle center to form the cable core 5, the elongation of each twisted pair 8 is the same, the frame bodies of the insulation frame 4 are equal in length, the structure in the cable core 5 is uniform and compact, the surface of the cable core 5 is round, the cable obtained by covering the sheath 1 formed by extrusion molding outside the cable core 5, and the stability of a cable transmission signal is improved.
The space between every two frame bodies is adapted to the diameter of the optical fiber 7 or the single twisted pair 8, so that the optical fiber 7 or the twisted pair 8 can be stably fixed between every two frame bodies, and the stability of the structure in the cable core 5 is ensured; the diameters of the twisted pairs 8 are the same, the distance from the center of the optical fiber 7 to the circle center of the insulating framework 4 is equal to the distance from the center of the twisted pairs 8 to the circle center of the insulating framework 4, the balance characteristic of the cable is improved, signal crosstalk is reduced, and stability of transmission signals is guaranteed.
Seen from the cross section, the insulating framework 4, the twisted pairs 8 and the optical fibers 7 of the rectangular frame body are compact in structure, space distribution is saved, the outer diameter of the cable is small, the weight of the cable is light, the proportion of the insulating framework 4 in the cable core 5 is small, the influence on the current-carrying density of the cable is small, and the cable is guaranteed to have large current-carrying density.
The optical fiber 7 in the data cable can realize the high-efficiency transmission of optical signals during network expansion, meet the signal transmission requirements of comprehensive twisted pair wires on high bandwidth and high transmission speed, can also carry out length positioning, and can carry out fault positioning or measure the total length of a line under the condition that the cable is damaged or disconnected; meanwhile, the additional attenuation change of the optical fiber 7 along with the temperature can judge the high-heat position of the cable in the operation process, so that the position of the cable with short circuit is judged.
The sheath 1 is a tubular structure, and the sheath 1 plays a role in protecting the cable. The sheath 1 can be made of low-smoke halogen-free flame-retardant polyurethane, low-smoke halogen-free flame-retardant polyolefin and other thermoplastic protective layer coating materials. The sheath 1 is made of a low-smoke halogen-free flame-retardant polyurethane elastomer material with excellent bending elasticity, so that the mechanical and physical properties of the super-flexible cable can be improved, the bending property of the cable is improved, and the cable is wholly flexible and bending-resistant.
The insulating framework 4 is made of high-density polyethylene or flame-retardant polyolefin.
In another specific embodiment of the present invention, the number of the frame bodies of the insulating frame 4 is 5, and four twisted pairs 8 and one optical fiber 7 are isolated between two frame bodies.
As a further improvement, the conductor 2 is formed by twisting a plurality of strands of wire.
It should be noted that the conductor of the existing optical fiber composite data cable is a common solid conductor, and the bending radius is about 10 times of the outer diameter of the cable, while the cable of the embodiment adopts the conductor 2 formed by twisting multiple strands of metal wires, and the bending radius is about 5 times of the outer diameter of the cable, so that the flexibility of the data cable is improved, and the higher flexibility requirement of the industrial internet on certain cable applications can be met.
In another specific embodiment of the present invention, the conductor 2 may be a 5-type or 6-type conductor. The 5-class and 6-class conductors have high flexibility, can improve the bending characteristic of the cable, and are suitable for being applied to a dynamic operation environment or narrow space wiring.
The multi-strand metal wires are stranded in a concentric manner, the stranded wires are formed by regularly stranding a plurality of single wires with the same diameter layer by layer in a concentric circle manner, the stranding directions of all the layers are opposite, and the circle center can be formed by a single wire or a plurality of single wires with the same diameter.
As a further improvement, the metal wire comprises a soft copper wire or a copper-coated aluminum magnesium alloy wire.
It should be noted that the soft copper wire and the copper-clad aluminum-magnesium alloy are both metal wires with high flexibility, and the bending performance of the cable can be effectively improved by using the soft copper wire and the copper-clad aluminum-magnesium alloy as the metal wires forming the conductor 2.
As a further improvement, the insulating layer 3 is a solid polyolefin insulating layer or a foamed polyolefin insulating layer.
It should be noted that, according to the requirements of the actual application scenario, a person skilled in the art may use all the insulation layers 3 of the twisted pairs 8 as solid polyolefin insulation layers or all the insulation layers 3 of the twisted pairs 8 as foamed polyolefin insulation layers, and may also use a part of the insulation layers 3 of the twisted pairs 8 as solid polyolefin insulation layers and another part of the insulation layers 3 of the twisted pairs as foamed polyolefin insulation layers.
The foamed polyolefin insulating layer is made by adopting an insulating production process of a skin-foam skin and color strips, and consists of an inner thin layer, a foamed insulation layer, an outer thin layer and 4 color strips. Wherein, the color bar is used for facilitating wire separation. In this embodiment, there are four twisted pairs 8, and the color bars of the insulating layers 3 of two insulating core wires in the four twisted pairs 8 are respectively white blue/blue, white orange/orange, white green/green, and white brown/brown.
The foamed polyolefin insulation can effectively reduce the dielectric constant of the insulation, reduce the capacitance, reduce the crosstalk, improve the transmission characteristic of the cable and obtain higher transmission bandwidth; meanwhile, the outer diameter of the cable can be effectively reduced, the material consumption of insulation, shielding and a sheath is saved, and the cost is reduced.
The pair-twisted paying off tension of the single foamed polyolefin insulated core wire is preferably (450 +/-100) cNton, so that the insulated extrusion deformation caused by large paying off tension in the production process is avoided, and the cable with uniform impedance consistency can be obtained.
As a further improvement, the insulating core wire is longitudinally wrapped with an aluminum-plastic composite shielding belt.
It should be noted that, the aluminum-plastic composite shielding tape longitudinally wraps the insulating core wire of the twisted pair wire 8 of the shielding structure, so that the extrusion deformation of the contact point of the insulating core wire when the twisted pair wire is twisted by a single insulating core wire is avoided, and the time delay difference of cable information transmission is effectively improved.
As a further improvement, the optical fiber 7 is a single mode fiber.
In this embodiment, the single-mode fiber is a bending loss insensitive single-mode fiber.
The optical fiber 7 may be a coated optical fiber, a tight-buffered optical fiber, or a loose-buffered optical fiber.
As a further improvement, the cabling pitch of the cable core 5 is 50 mm-70 mm.
It should be noted that the cabling pitch of the cable core 5 greatly affects the bending, crosstalk, attenuation and impedance of the cable, and in order to make the cable meet the requirements of flexible bending and high-frequency transmission characteristics, the cabling pitch of the cable core 5 is 50-70 mm.
As a further improvement, a moisture-proof layer (not shown in the figure) is included between the cable core 5 and the sheath 1;
the damp-proof layer is formed by coating the cable core 5 with a non-hygroscopic polyester tape.
It should be noted that the non-hygroscopic polyester tape prevents the cable from absorbing moisture from the air, and prevents the cable from being affected by moisture.
As a further improvement, a shielding layer 6 is included between the moisture-proof layer and the sheath 1;
the shielding layer 6 is formed by longitudinally wrapping an aluminum foil total shielding belt outside a moisture-proof layer.
In another specific embodiment of this embodiment, the shielding layer 6 is disposed between the cable core 5 and the sheath 1 without a moisture-proof layer, and the aluminum foil total shielding tape is longitudinally wrapped outside the cable core 5.
The aluminum foil total shielding belt is a single-side aluminum-plastic composite shielding belt, and the aluminum-based conductive surface faces inwards.
As a further improvement, a drain wire (not shown in the figure) is provided between the shielding layer 6 and the sheath 1, and the drain wire is connected with the shielding layer 6.
It should be noted that, a drainage line is longitudinally dragged outside the shielding layer 6, and the aluminum-based conductive surface of the single-side aluminum-plastic composite shielding tape is in communication contact with the drainage line.
The inter-string signal of the data cable is very strong when the high frequency is transmitted, stronger mutual interference can be generated between the twisted pair wires 8, the twisted pair wires 8 adopting the shielding structure and the shielding layer 6 of the aluminum foil total shielding layer greatly reduce the crosstalk interference, thereby effectively isolating the external electromagnetic interference and enabling the cable to operate the transmission signal safely and stably.
It is right above the utility model provides an optical fiber composite data cable has carried out detailed introduction, to the general technical personnel in this field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and application scope, to sum up, this description content should not be understood as right the utility model discloses a restriction.
Claims (10)
1. An optical fiber composite data cable, comprising: the cable comprises a cable core and a sheath outside the cable core;
the cable core comprises an optical fiber, a plurality of twisted pairs and an insulating framework;
the twisted pair is formed by twisting two insulated core wires in pairs, wherein each insulated core wire comprises a conductor and an insulating layer outside the conductor;
the insulation framework is a framework which extends outwards from a circle center to form a plurality of equal-length frame bodies, the cross section of each frame body is rectangular, and the optical fibers or the single twisted pair wires are fixed between every two frame bodies.
2. The fiber optic composite data cable of claim 1, wherein the conductor is stranded from a plurality of wires.
3. The optical fiber composite data cable of claim 2, wherein the metal wire comprises a soft copper wire or a copper clad aluminum magnesium alloy wire.
4. The fiber optic composite data cable of claim 1, wherein the insulating layer is a solid polyolefin insulating layer or a foamed polyolefin insulating layer.
5. The optical fiber composite data cable of claim 1, wherein the insulating core wire is longitudinally wrapped with an aluminum-plastic composite shielding tape.
6. The fiber optic composite data cable of claim 1, wherein the optical fiber is a single mode optical fiber.
7. The optical fiber composite data cable of claim 1, wherein the cabling pitch of the cable core is 50mm to 70mm.
8. The fiber optic composite data cable of claim 1, wherein the cable core and the jacket include a moisture barrier therebetween;
the moisture-proof layer is formed by wrapping the cable core with a non-hygroscopic polyester tape.
9. The fiber optic composite data cable of claim 8, including a shield between the moisture barrier and the jacket;
the shielding layer is formed by longitudinally wrapping an aluminum foil total shielding tape outside the moisture-proof layer.
10. The fiber optic composite data cable of claim 9, wherein a drain wire is disposed between the shield and the jacket, the drain wire connecting the shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222953310.8U CN218351147U (en) | 2022-11-07 | 2022-11-07 | Optical fiber composite data cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222953310.8U CN218351147U (en) | 2022-11-07 | 2022-11-07 | Optical fiber composite data cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218351147U true CN218351147U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222953310.8U Active CN218351147U (en) | 2022-11-07 | 2022-11-07 | Optical fiber composite data cable |
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| Country | Link |
|---|---|
| CN (1) | CN218351147U (en) |
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2022
- 2022-11-07 CN CN202222953310.8U patent/CN218351147U/en active Active
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