CN218513232U - Low-loss low-delay data cable applicable to 5G scheme - Google Patents

Abstract

The utility model provides a be suitable for low-loss low time delay data cable of 5G scheme, data cable are including data pair and overcoat structure, the data pair has four groups and wholly is located data cable's inside, and overcoat structure parcel sets up in the outside of data pair and as isolation shielding structure, the data pair adopts two parallel arrangement's insulated wire, and the outside winding at the insulated wire of parallel sets up the conductor shielding layer, and all data pairs are through cage stranding formula stranding, and overcoat structure parcel sets up the outside of all data pairs behind the stranding. The data line pair is a carrier for transmitting data, and in order to avoid the attenuation of signals generated by the traditional twisted-pair mode, the insulated wires are arranged into two parallel forms, so that the interference and the loss can be effectively reduced, the independent shielding is carried out, and the signal interference between the insulated wires is reduced when the whole cable is formed.

Description

Low-loss low-delay data cable applicable to 5G scheme

Technical Field

The utility model relates to a data cable structural improvement that wire rod transmission loss is little specifically is a low-loss low-delay data cable who is suitable for the 5G scheme.

Background

The intelligent building wiring engineering can meet the requirement of installing 5G equipment, the wiring of common equipment adopts super-five or six types of data cable products, and solid high-density polyethylene (HDPE) insulation is generally adopted, so that the requirements of hundred meganets and giganets on the width can be met due to the material characteristics and the lower cost. To meet the requirements of 5G equipment, more than six types of data cable products are needed, so that skin-foam-skin foamed polyethylene insulation is adopted, and the dielectric loss coefficient epsilon of the foamed polyethylene is smaller than that of solid HDPE, so that the signal transmission speed in the honeycomb-shaped foamed PE insulation is higher, the loss is smaller, and the speed can reach 75% of the light speed (the HDPE insulation can only reach 67% of the light speed); however, the foamed polyethylene insulation is easy to deform under stress in the subsequent procedures of twisting, cabling and the like, so that the return wave and loss are increased, and the transmission rate is reduced; in addition, the twisting coefficient of the pair twisting and the cabling increases the transmission delay to a certain extent; there is therefore a need for a low loss, low latency data cable.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a low-loss low time delay data cable who is suitable for the 5G scheme.

The utility model provides a technical scheme that above-mentioned problem adopted is: the data cable comprises data line pairs and an outer sleeve structure, wherein the data line pairs are provided with four groups and are integrally positioned in the data cable, the outer sleeve structure wraps the data line pairs and serves as an isolation shielding structure, the data line pairs adopt two parallel insulated wires, a conductor shielding layer is wound outside the parallel insulated wires, all the data line pairs are cabled in a cage-twisted mode, and the outer sleeve structure wraps the outside of all the data line pairs after cabling. The data line pair is a carrier for transmitting data, and in order to avoid the attenuation of signals generated by the traditional twisted-pair mode, the insulated wires are arranged into two parallel forms, so that the interference and the loss can be effectively reduced, the independent shielding is carried out, and the signal interference between the insulated wires is reduced when the whole cable is formed.

Furthermore, the conductor shielding layer is a self-adhesive aluminum foil shielding layer and is wrapped outside the insulated wire in a winding mode. The self-adhesive aluminum foil shielding layer can effectively improve the processing efficiency and has high winding forming efficiency.

Furthermore, the insulated conductor comprises an oxygen-free copper conductor and a foamed polytetrafluoroethylene insulating layer, the foamed polytetrafluoroethylene insulating layer is tightly wrapped outside the oxygen-free copper conductor, and the foamed polytetrafluoroethylene insulating layer is of a skin-foam-skin foaming structure and is in contact with the oxygen-free copper conductor in a bonding mode. The foamed polytetrafluoroethylene insulation has a lower dielectric constant epsilon 1.4-1.5 (foaming degree is 50%), is superior to the dielectric constant epsilon 1.6-1.7 (foaming degree is 50%) of foamed polyethylene, and has a faster signal transmission speed (closer to light speed) when the dielectric constant is smaller; the shielded parallel wire pairs have no twisting rate, while the traditional twisted wire pairs have the twisting rate according to different twisting pitches, so that the electrical length is longer, the signal loss is obvious and the like. The polytetrafluoroethylene insulation has excellent high and low temperature resistance (-200 to +200 ℃) and good flame retardant property, the temperature resistance level and the flame retardant level of the data cable product can be improved to a great extent, the fire risk of the cable caused by temperature rise can be greatly reduced, and the safety performance is also obviously improved.

Further, overcoat structure is including total shielding layer, metal winding layer, tear line and restrictive coating, total shielding layer surrounds in the outside of data line pair, and the metal winding layer is located the outside on total shielding layer, and the restrictive coating surrounds the outside that sets up on metal winding layer, and the embedding is provided with the tear line in metal winding layer and restrictive coating, tear line splittable restrictive coating and metal winding layer. The whole cable that protects and shields of oversheath structure improves holistic stable in structure to isolated outside influence sets up the tear line simultaneously and improves the wiring installation effectiveness.

Furthermore, the total shielding layer adopts an aluminum foil wrapping tape and wraps all the data line pairs.

Further, the sheath layer is made of flame-retardant plastic materials.

Through the design of the patent, on one hand, the strength of a foaming structure can be improved by adopting a foaming polytetrafluoroethylene insulating material, and the foaming structure is not easy to deform in the subsequent processing process; on the other hand, the 8-core foaming insulation core wire is wrapped with self-adhesive aluminum foils in a pairwise parallel arrangement mode. The process route reduces the twisting of the pair twisting process, greatly reduces the risk of the foaming line being extruded and deformed, and can effectively reduce the transmission delay and transmission loss of the data cable.

Compared with the prior art, the utility model, have following advantage and effect: the skin-foam-skin foamed polytetrafluoroethylene insulation (the foaming degree is 50%) is adopted, and the attenuation value is superior to the super six-class standard 5-8dB/100m by combining with a shielding lapped parallel line pair; the time delay is better than the super-six standard 3ns/100m; the product has wider environmental temperature resistance, can be used in the environment with high and low temperature resistance (-200 to +200 ℃), and meets the application in various complex environments.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. data line pair, 2, jacket structure, 3, insulated conductor, 4, conductor shielding layer, 5, total shielding layer, 6, metal winding layer, 7, tear line, 8, restrictive coating.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

The utility model provides a be suitable for low-loss low time delay data cable of 5G scheme, data cable is including data pair 1 and overcoat structure 2, data pair 1 has four groups and wholly is located data cable's inside, and overcoat structure 2 parcel sets up in data pair 1's outside and as isolation shielding structure, data pair 1 adopts two parallel arrangement's insulated conductor 3, and the outside winding of insulated conductor 3 in parallel sets up conductor shielding layer 4, and all data pair 1 are stranded the cable through the cage, and overcoat structure 2 parcel sets up all data pair 1's outside behind the cable.

The conductor shielding layer 4 is a self-adhesive aluminum foil shielding layer and is wrapped outside the insulated wire 3 in a winding mode.

The insulated conductor 3 comprises an oxygen-free copper conductor and a foamed polytetrafluoroethylene insulating layer, the foamed polytetrafluoroethylene insulating layer is tightly wrapped outside the oxygen-free copper conductor, is of a skin-foam-skin foaming structure, and is attached to and contacted with the oxygen-free copper conductor.

Overcoat structure 2 is including total shielding layer 5, metal winding layer 6, tear line 7 and restrictive coating 8, total shielding layer 5 surrounds in the outside of data line pair 1, and metal winding layer 6 is located total shielding layer 5's the outside, and restrictive coating 8 surrounds the outside that sets up at metal winding layer 6, and the embedding is provided with tear line 7 in metal winding layer 6 and restrictive coating 8, and tear line 7 splittable restrictive coating 8 and metal winding layer 6.

The total shielding layer 5 adopts an aluminum foil wrapping tape and wraps all the data line pairs 1 in a winding manner.

The sheath layer 8 is made of flame-retardant plastic materials.

It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only one independent technical solution, and such description is given for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims (6)

1. A low-loss low-time-delay data cable suitable for a 5G scheme is characterized in that: the data cable comprises data line pairs (1) and a jacket structure (2), wherein the data line pairs (1) are provided with four groups and are integrally located inside the data cable, the jacket structure (2) wraps the data line pairs (1) and serves as an isolation shielding structure, the data line pairs (1) adopt two parallel insulated wires (3), a conductor shielding layer (4) is wound outside the parallel insulated wires (3), all the data line pairs (1) are cabled through cage stranding, and the jacket structure (2) wraps the data line pairs (1) after cabling.

2. The low-loss low-latency data cable to which the 5G scheme is applied according to claim 1, wherein: the conductor shielding layer (4) is a self-adhesive aluminum foil shielding layer and is wrapped outside the insulated wire (3) in a winding mode.

3. The low-loss low-latency data cable to which the 5G scheme is applied according to claim 1, wherein: the insulated wire (3) comprises an oxygen-free copper conductor and a foamed polytetrafluoroethylene insulating layer, the foamed polytetrafluoroethylene insulating layer is tightly wrapped outside the oxygen-free copper conductor, and the foamed polytetrafluoroethylene insulating layer is of a skin-foam-skin foaming structure and is in contact with the oxygen-free copper conductor in a bonding mode.

4. The low-loss low-latency data cable to which the 5G scheme is applied according to claim 1, wherein: overcoat structure (2) are including total shielding layer (5), metal winding layer (6), tear line (7) and restrictive coating (8), total shielding layer (5) surround in the outside of data line pair (1), and metal winding layer (6) are located the outside of total shielding layer (5), and restrictive coating (8) surround the outside that sets up in metal winding layer (6), and the embedding is provided with tear line (7) in metal winding layer (6) and restrictive coating (8), and tear line (7) splittable restrictive coating (8) and metal winding layer (6).

5. The low-loss low-latency data cable to which the 5G scheme is applied according to claim 4, wherein: the total shielding layer (5) adopts an aluminum foil wrapping tape and wraps all the data line pairs (1).

6. The low-loss low-latency data cable to which the 5G scheme is applied according to claim 4, wherein: the sheath layer (8) is made of flame-retardant plastic materials.

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