CN211237808U

CN211237808U - Network cable

Info

Publication number: CN211237808U
Application number: CN201922306070.0U
Authority: CN
Inventors: 陈乐�; 李林明
Original assignee: Shenzhen Dns Industries Co ltd
Current assignee: Shenzhen Dns Industries Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-08-11
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a network cable, which comprises a cable main body, wherein the cable main body comprises a plurality of twisted pairs, each twisted pair comprises two core wires twisted together in pairs and a low dielectric constant dielectric layer and a shielding layer which are sequentially wrapped on the peripheries of the two core wires; each core wire comprises a conducting wire and an insulating layer wrapped on the periphery of the conducting wire. The utility model discloses can avoid the phenomenon that its decay of net twine in 2000MHz frequency range and return loss are unstable and appear the peak easily effectively, satisfy the performance demand of product.

Description

Network cable

[ technical field ] A method for producing a semiconductor device

The utility model relates to a cable especially relates to a eight types of net twine cables of CAT 8.

[ background of the invention ]

The length of CAT8 category-eight network cable channel is limited to 30m (meter), this distance is mainly suitable for data center wiring, the transmission speed can reach 40Gb/s (gigabits per second), the 40Gb/s transmission speed strictly requires the CAT8 category-eight network cable wiring performance to be as high as 2000MHz (megahertz) test frequency. The existing CAT8 eight-type network cable adopts a conventional production process and a product structure, the periphery of two core wires of each twisted pair is usually only wrapped by one layer of aluminum foil shielding layer, the attenuation and return loss of the cable are unstable in the frequency range of 2000MHz, peaks easily appear, and the requirement of product performance cannot be met.

[ Utility model ] content

An object of the utility model is to overcome the not enough of above-mentioned technique, provide a net twine cable, can avoid its decay of net twine in 2000MHz frequency range and return loss unstable and the phenomenon of peak appears easily, satisfied the performance demand of product.

The utility model provides a network cable, which comprises a cable main body, wherein the cable main body comprises a plurality of twisted pairs, each twisted pair comprises two core wires twisted together in pairs and a low dielectric constant dielectric layer and a shielding layer which are sequentially wrapped on the peripheries of the two core wires; each core wire comprises a conducting wire and an insulating layer wrapped on the periphery of the conducting wire.

Further, the cable main body further comprises a ground wire, and the twisted pairs are uniformly distributed around the ground wire on the cross section of the cable main body.

Furthermore, the twisted pairs are in contact with each other, and the twisted pairs are not in contact with the ground wire.

Further, the net twine cable is CAT8 eight-type net twine cable, and the cable main part includes four twisted pairs.

Further, the low dielectric constant dielectric layer is a foamed PP layer, the dielectric constant of the foamed PP layer is 2.2-2.6, and the shielding layer is an aluminum foil layer.

Further, the thickness of the foamed PP layer is 0.1-0.15 mm.

Further, the total thickness of the foamed PP layer and the aluminum foil layer is more than 0.1 and less than 0.25 mm.

Further, the network cable also comprises a total shielding layer wrapped on the periphery of the cable main body.

Further, the total shielding layer is an aluminum foil layer.

Further, the network cable further comprises a woven layer and an outer cover which are sequentially wrapped on the periphery of the total shielding layer.

The utility model discloses an every pair of stranded conductor through the low dielectric constant dielectric layer of its two heart yearns peripheral parcel, can promote its transmission speed, can avoid its decay of net twine in 2000MHz frequency range and return loss unstability and the phenomenon that the peak appears easily effectively, has satisfied the performance demand of product.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of a network cable according to an embodiment of the present invention.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and examples.

Referring to fig. 1, the utility model provides a pair of net twine cable, including the cable main part. The cable body comprises a plurality of twisted pairs 10. The twisted pair 10 is used for transmitting data signals. Each twisted pair 10 comprises two core wires 11 twisted together in pairs, and a low dielectric constant dielectric layer 12 and a shielding layer 13 which are sequentially wrapped on the peripheries of the two core wires 11. The low dielectric constant dielectric layer 12 can increase the transmission speed of the twisted pair 10, effectively avoid the phenomena that the attenuation and return loss of the network cable are unstable and the peak is easy to appear in the 2000MHz frequency range, and the shielding layer 13 plays a role in shielding the interference of the adjacent twisted pair 10. The mesh cable of the present embodiment is CAT8 category eight mesh cable, and the cable main body includes four twisted pairs 10.

Each core wire 11 includes a conductive wire 111 and an insulating layer 112 wrapped around the conductive wire 111. The conductive line 111 is preferably a copper line.

There may be a gap or no gap between the low-dielectric-constant dielectric layer 12 and the shield layer 13.

The low dielectric constant dielectric layer 12 is preferably a foamed PP (polypropylene) layer having a dielectric constant of 2.2 to 2.6. The barrier layer 13 is preferably an aluminium foil layer. The thickness of the foamed PP layer is 0.1-0.15 mm. The total thickness of the foaming PP layer and the aluminum foil layer is more than 0.1 and less than 0.25 mm.

The utility model discloses a net twine cable still includes ground wire 20 for realize the ground connection. On the cross section of the cable main body, a plurality of twisted pairs 10 are uniformly distributed around the ground wire 20, the twisted pairs 10 are in contact with each other, the twisted pairs 10 are not in contact with the ground wire 20, the structure is compact, and the size of the network cable can be reduced.

The cross-sectional shapes of the twisted pair wire 10 and the ground wire 20 are both circular, so that the manufacturing is convenient. The diameter of the twisted pair 10 is preferably larger than the diameter of the ground wire 20.

The plurality of twisted pairs 10 are different in color, such as blue, orange, green, brown, etc., so as to facilitate differentiation and installation of transmission joints of the network cable. The two core wires 11 of each twisted pair 10 are different in color, such as red, yellow, etc., so as to facilitate distinguishing and installation of the transmission joint to a network cable. The color of the twisted wire pairs 10 and the color of the two core wires 11 of each twisted wire pair 10 can be set by themselves. It is understood that the colors of the plurality of twisted pairs 10 may be set to be the same, and the colors of the two core wires 11 of each twisted pair 10 may be set to be the same.

The utility model discloses a net twine cable is still including the parcel at the peripheral total shield layer 30 of cable main part and wrap up in proper order at total shield layer 30 outlying weaving layer 40, outer quilt 50. The total shield layer 30 serves as a total shield to prevent external interference. The braid 40 and the outer cover 50 respectively play roles of tensile strength and insulation, and protect the cable body as a whole. The total shield layer 30 is preferably an aluminum foil layer. The woven layer 40 is, for example, a nylon yarn layer, a polyester yarn layer, or the like, and the outer layer 50 is, for example, a plastic layer or the like.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, such as combinations of different features in the various embodiments, which are within the scope of the present invention.

Claims

1. The utility model provides a net twine cable, includes the cable main part, the cable main part includes many twisted pairs, its characterized in that: each twisted pair comprises two core wires twisted together in pairs, and a low-dielectric-constant dielectric layer and a shielding layer which are sequentially wrapped on the peripheries of the two core wires; each core wire comprises a conducting wire and an insulating layer wrapped on the periphery of the conducting wire.

2. The network cable according to claim 1, characterized in that: the cable main body further comprises a ground wire, and the twisted pairs surround the ground wire and are evenly distributed on the cross section of the cable main body.

3. The network cable according to claim 2, wherein: the multiple twisted pairs are in contact with each other, and the multiple twisted pairs are not in contact with the ground wire.

4. The network cable according to claim 1, characterized in that: the net twine cable is CAT8 eight kinds of net twine cables, the cable main part includes four twisted pairs.

5. The network cable according to claim 1, characterized in that: the low dielectric constant dielectric layer is a foamed PP layer, the dielectric constant of the foamed PP layer is 2.2-2.6, and the shielding layer is an aluminum foil layer.

6. The network cable according to claim 5, wherein: the thickness of the foamed PP layer is 0.1-0.15 mm.

7. The network cable according to claim 5, wherein: the total thickness of the foamed PP layer and the aluminum foil layer is more than 0.1 and less than 0.25 mm.

8. The network cable according to claim 1, characterized in that: the network cable also comprises a total shielding layer wrapped on the periphery of the cable main body.

9. The network cable according to claim 8, characterized in that: the total shielding layer is an aluminum foil layer.

10. The network cable according to claim 8, characterized in that: the network cable also comprises a woven layer and an outer cover which are sequentially wrapped on the periphery of the total shielding layer.