CN216353558U

CN216353558U - Parallel pair data cable

Info

Publication number: CN216353558U
Application number: CN202122810829.6U
Authority: CN
Inventors: 杨林臻; 邹明; 丁博
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-19
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a parallel pair data cable, which comprises a cable core, an inner shielding layer, an outer shielding layer, a belting layer and a sheath layer, wherein the inner shielding layer, the outer shielding layer, the belting layer and the sheath layer are sequentially wrapped outside the cable core, the cable core is formed by twisting and filling two parallel line pairs, the parallel line pairs are formed by wrapping aluminum composite belt layers outside two insulating wire cores which are directly placed in pairs, and each insulating wire core comprises a conductor and an insulating layer wrapped outside the conductor.

Description

Parallel pair data cable

Technical Field

The utility model relates to the technical field of cables, in particular to a parallel pair data cable.

Background

For a long time before the spread of optical fiber, the subscriber line of the access network will still be dominated by metal cable. The metal cable mainly comprises a full-plastic cable, a coaxial cable and a data cable. The data cable is an ideal transmission medium of the broadband access network at present, has the advantages of low manufacturing cost, simple structure, good expandability and convenient network upgrade, and is mainly used for building comprehensive wiring, cell computer comprehensive wiring and the like.

At present, the following situations exist in common data cables: (1) the common product adopts the tinned copper wire as a conductor, and the conductor has high resistance, so that the product attenuation is high. (2) The common product adopts a polyvinyl chloride material as insulation, and the dielectric constant of the insulation material is large, so that the attenuation of the product is large, and the transmission capability of the product is reduced. (3) The common product adopts a double-twisted structure, which is easy to cause uneven pitch and attenuation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of common data in the prior art, and provides a parallel pair data cable.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a parallel pair data cable, includes the cable core and wraps up in cable core outside internal shield layer, outer shielding layer, band layer and restrictive coating in proper order, the cable core is formed by two parallel lines antitwist, for making the cable core rounding, adds the packing.

Furthermore, the parallel line pair is formed by wrapping aluminum composite belt layers outside two insulating wire cores which are directly placed in pairs, and each insulating wire core comprises a conductor and an insulating layer wrapped outside the conductor.

Preferably, the conductor adopts a solid silver-plated copper single wire.

Preferably, the material of the insulating layer is foamed polyethylene.

Preferably, the aluminum composite tape layer is formed by overlapping aluminum-plastic composite tapes, the overlapping rate is not less than 20%, and the aluminum surface faces outwards during the lapping.

Preferably, the inner shielding layer is formed by lapping a layer of double-sided aluminum-plastic composite tape, and the lapping overlapping rate is not less than 25%.

Preferably, the outer shielding layer is braided by tinned copper wires, and the braiding density is not less than 85%.

Preferably, the wrapping tape layer is formed by winding a layer of foamed polypropylene tape, and the winding overlapping rate is not less than 25%.

Preferably, the material of the sheath layer is polyvinyl chloride.

Compared with the prior art, the utility model has the beneficial effects that:

1. the parallel pair data cable adopts a silver-plated copper conductor, so that the conductor resistance is small, the transmission attenuation is small, the signal loss is small, and the data transmission is fast.

2. The insulating layer of the parallel data cable adopts foamed polyethylene with low dielectric constant (about 1.4) and light density, so that the weight of the cable is reduced, the data transmission attenuation of the cable is reduced, the data transmission speed of the cable is high (up to 15G), and the cable can be matched with the impedance of equipment (the nominal characteristic impedance is 150 omega).

3. The insulated wire cores of the parallel pair data cable exist in a parallel pair mode and are wrapped by the aluminum-plastic composite tape layer, so that the occurrence of twisting distance during twisting is avoided, and the attenuation of cable data transmission is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a parallel pair data cable according to the present invention.

In the figure: 1. a conductor; 2. an insulating layer; 3. aluminum-plastic composite belt layers; 4. filling; 5. an inner shield layer; 6. an outer shield layer; 7. a belting layer; 8. a sheath layer.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, the parallel pair data cable comprises a cable core, and an inner shielding layer 5, an outer shielding layer 6, a belting layer 7 and a sheath layer 8 which are sequentially wrapped outside the cable core, wherein the cable core is formed by twisting two parallel lines.

In the embodiment, the inner shielding layer 5 is formed by lapping a layer of double-sided aluminum-plastic composite tape with the thickness of 0.03-0.05mm, and the lapping overlapping rate is not less than 25%; the outer shielding layer 6 is formed by weaving tinned copper wires with the nominal diameter of 0.127mm, and the weaving density is not less than 85%; the belting layer 7 is formed by winding a layer of 0.07mm thick foamed polypropylene belt, and the lapping overlapping rate is not less than 25%; the material of sheath layer 8 is polyvinyl chloride, and the external diameter after the extrusion is 9.60 mm.

Further, the parallel line pair is formed by wrapping an aluminum composite belt layer 3 outside two insulating wire cores which are directly placed in pairs, and each insulating wire core comprises a conductor 1 and an insulating layer 2 wrapping the outer portion of the conductor 1. The insulated wire cores exist in a parallel alignment mode and are wrapped by the aluminum-plastic composite tape layer, so that the occurrence of twisting distance during twisting is avoided, and transmission attenuation is reduced.

In the embodiment, the conductor 1 adopts a solid silver-plated copper single wire, the conductor structure is 1/0.64mm, the conductor resistance is small, the transmission attenuation is small, the signal loss is small, and the data transmission is fast. The insulating layer 2 is made of foamed polyethylene, the insulating thickness is 1.18mm, and the insulating outer diameter is 3.00 mm. The insulating layer in this embodiment is made of foamed polyethylene having a low dielectric constant (about 1.4) and a low density, so that the weight of the cable is reduced, the transmission attenuation is reduced, the transmission speed is high, which can reach (15G), and the cable can be matched with the impedance of a device (the nominal characteristic impedance is 150 Ω).

The color of the insulated wire core is white, red, blue and green. The white and red insulated wire cores are directly paired, an aluminum-plastic composite belt with the thickness of 0.025mm is lapped outside the wire pairs in an overlapping mode, the overlapping rate is not less than 20%, the aluminum surface faces outwards during lapping, and the parallel wire pairs are obtained. The blue and green insulated wire cores are directly placed in pairs, a layer of aluminum-plastic composite tape with the thickness of 0.025mm is lapped outside the wire pairs in an overlapping mode, the overlapping rate is not less than 20%, the aluminum surface faces outwards during lapping, and the other parallel wire pair is obtained.

And correspondingly twisting the two parallel lines into a cable, wherein the twisting direction is the right direction, the twisting pitch ratio is not more than 16 times, and in order to round the cable core, filling 4 of a non-hygroscopic material is added.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a parallel pair data cable, its characterized in that includes the cable core and wraps up in cable core outside internal shield layer (5), outer shielding layer (6), band layer (7) and restrictive coating (8) in proper order, the cable core is twisted by two parallel lines and forms and add packing (4), the parallel line pair is put the outside compound band layer of parcel aluminium (3) of mated insulation core by two and is formed, insulation core includes conductor (1) and wraps up in the outside insulating layer (2) of conductor (1).

2. The parallel-pair data cable of claim 1, wherein the conductor (1) is a solid silver-plated copper single wire.

3. Parallel pair data cable according to claim 2, characterized in that the material of the insulating layer (2) is expanded polyethylene.

4. A parallel pair data cable according to claim 3, wherein said aluminum composite tape layer (3) is formed by overlapping lapped aluminum-plastic composite tape, the overlapping rate is not less than 20%, and the aluminum faces outward when lapped.

5. The parallel pair data cable of claim 1 or 4, characterized in that the inner shield layer (5) is formed by a double-sided aluminum-plastic composite tape wrapping with a wrapping overlapping rate of not less than 25%.

6. The parallel-pair data cable of claim 5, wherein the outer shield layer (6) is braided from tinned copper wire at a braid density of not less than 85%.

7. The parallel pair data cable of claim 6, wherein the wrapping layer (7) is formed by winding a layer of foamed polypropylene tape with a wrapping overlap of not less than 25%.

8. The parallel-pair data cable of claim 1, wherein the material of the jacket layer (8) is polyvinyl chloride.