CN211670032U

CN211670032U - Communication cable

Info

Publication number: CN211670032U
Application number: CN202020434492.6U
Authority: CN
Inventors: 赵东泰
Original assignee: Shaanxi Lvfu Cable Co ltd
Current assignee: Shaanxi Lvfu Cable Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-13
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to a cable conductor technical field, concretely relates to communication cable, it mainly includes: electric wires provided in a plurality of pairs, each of the electric wires being constituted by two conductors covered with an insulator in a spirally twisted manner; an outer sheath covering outer sides of the plurality of pairs of electric wires; a support arm provided inside the outer sheath and in a plurality of arrangements for respectively supporting a plurality of pairs of the electric wires, avoiding contact of the electric wires with an inner wall of the outer sheath, and forming a space at a support surface of each of the electric wires. The utility model discloses a structure that changes the oversheath makes the interference minimizing between the adjacent cable to can satisfy the communication cable standard more than Cat.6A.

Description

Communication cable

Technical Field

The utility model relates to a cable conductor technical field, concretely relates to communication cable.

Background

UTP communication cables are commonly used for wired communications and are also referred to as unshielded pair cables or unshielded twisted pair cables. The UTP communication cable is a standard signal line for LAN cards. The UTP communication cable may include a cable core having a pair of wires therein and an outer jacket covering the cable core to protect the cable core. In general, UTP communication cables can be classified into several categories according to the transmission rate and transmission band of communication signals. In recent years, with the increasing use of cat.5 or cat.6 cables, optical communications have been widely used and computer hardware performance has improved. The demand for advanced communication cables is increasing, and therefore, the use of cat.6a or cat.7 cables is gradually increasing.

When the communication cable supports a cable of cat.6 or higher, a method of adding a metal shield layer inside a sheath to cover each pair of wires or cable cores is generally used to prevent adjacent cables from interfering with each other, external interference, and the like. However, the method of adding the metal shield layer inside the sheath to cover each pair of wires or cable cores is disadvantageous in terms of a complicated manufacturing process and high manufacturing costs.

SUMMERY OF THE UTILITY MODEL

The utility model provides a communication cable, this communication cable can satisfy the communication cable standard more than Cat.6A to do not have the metallic shield layer, thereby simplified self structure.

In order to achieve the above object, the utility model provides a following technical scheme: a communications cable, comprising: electric wires provided in a plurality of pairs, each of the electric wires being constituted by two conductors covered with an insulator in a spirally twisted manner; an outer sheath covering outer sides of the plurality of pairs of electric wires; a plurality of support arms provided inside the outer sheath, for respectively supporting a plurality of pairs of the electric wires, preventing the electric wires from contacting an inner wall of the outer sheath, and forming a space below a support surface of each of the electric wires; each of the support arms protruding from an inner surface of the outer sheath; the width of the first end of each support arm is greater than the width of the second end.

Preferably, each of the support arms is integrally provided with the outer sheath.

Preferably, each of the support arms is connected to an inner surface of the outer sheath by a connecting portion; the support portion of each of the support arms is configured to support a plurality of pairs of the electric wires; the width of the connecting portion is set gradually smaller toward the electric wire direction.

Preferably, the support arm further comprises a projection formed on each support surface of the respective support arms.

Preferably, the distance between the protrusions on the central portion of the support surface is greater than the distance between the protrusions on the edge of the support surface.

Preferably, each of said support surfaces in each of said support arms has a circular arc shape.

Preferably, the thickness of the outer sheath is greater than the thickness of the protrusions formed on the plurality of support arms.

The utility model discloses beneficial effect does: the communication cable can satisfy the Cat.6A communication standard without additionally shielding each pair of wires of the UTP communication cable or a cable core including the pair of wires with a metal shielding layer. Since the metal shield layer is not required, the manufacturing process is simple and the increase in manufacturing cost can be prevented while satisfying the cat.6a standard. The width of the support arm provided as the spacer on the inner surface of the outer sheath of the communication cable increases toward the center of the cable, and thus the cable core can be stably supported. And an air layer or a vacant space can be sufficiently secured in the communication cable. The overall dielectric constant of the communication cable can be reduced to improve the attenuation margin, propagation speed margin, and the like of the communication cable. Further, the support arm is provided as an isolation means on the inner surface of the outer sheath of the communication cable, and thus the cable cores having the paired electric wires can be arranged at the center of the cable, and thus the distance between the cable cores of the adjacent cables can be increased to minimize the external interference between the adjacent cables.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the interior of the mask of the present invention;

FIG. 3 is a schematic view of the structure of the isolation device of the present invention;

fig. 4 is a schematic structural view of another isolation device of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and obviously, the described embodiments 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.

As shown in fig. 1, 2, 3, 4, a communication cable includes a cable core 4, the cable core 4 includes a plurality of pairs of wires 2, each pair of wires 2 is a wire formed by spirally twisting two conductors covered with an insulator; the outer jacket 6 includes an isolation device for preventing contact between the inner surface of the cable core 4 and the outer jacket 6 and ensuring an isolation space in the radial direction. The spacers are integrally formed with the outer sheath 6 and each comprise: a connection portion connected to an inner surface of the outer sheath 6; and a support portion having an increased width at an end of the connection portion and supporting the cable core 4.

It is also possible to include a cable core 4 having a plurality of pairs of wires 2. Here, each of the paired electric wires 2 is formed by helically twisting two conductive wires composed of a conductor covered with an insulator.

The separator 3 may have a cross-shaped cross-section and may be gently twisted in a spiral form and arranged in the communication cable 1. Each of the pair of electric wires 2 may be disposed in one of four portions in the space. The communication cable 1 is divided by a divider 3. The paired electric wires 2 may be spaced apart from each other as much as possible by the separator 3, thereby minimizing interference and the like.

The paired

electric wires

2a, 2b, 2c, and 2d are formed by covering the conductors 2a1, 2a2, 2b1, 2b2, 2c1, 2c2, 2d1, and 2d2 with insulators 2a3, 2a4, 2b3, 2b4, 2c3, 2c4, 2d3, and 2d4, respectively. The paired

electric wires

2a, 2b, 2c, and 2d may be twisted at different pitches, and the insulators 2a3, 2a4, 2b3, 2b4, 2c3, 2c4, 2d3, and 2d4 covering the conductors 2a1, 2a2, 2b1, 2b2, 2c1, 2c2, 2d1, and 2d2 may have different colors.

The communication cable 1 comprises a spacer in the outer jacket 6 and having a width that increases towards the centre of the communication cable 1, maximising the size of the empty space inside the communication cable 1. A cable core 4 having a pair of wires 2 is arranged at the center of the communication cable 1.

The outer jacket 6 of the communication cable 1 may comprise a spacer having a cross-section disposed on an inner surface thereof, the width of the spacer increasing towards the center of the communication cable 1 to prevent contact between the wire pairs. The electric wire 2 and the inner surface of the outer sheath 6 are connected to each other to ensure a space partitioned in the radial direction. The isolation means may be in the form of support arms 5 projecting from the inner surface of the outer sheath 6.

A plurality of support arms 5 serving as an isolation means may be integrally formed with the outer sheath 6 to be spaced apart from each other.

Each support arm 5, which serves as a spacer, has a width that increases from the inner surface of the outer sheath 6 toward the center of the communication cable 1. The support arm 5 may have, for example, a T-shape, a Y-shape, an inverted triangle or a trapezoid. The supporting arms 5 protrude from the inner surface of the outer jacket 6 and the width of the area thereof supporting the cable core 4 is increased.

The support arm 5 serving as the spacer may be integrally formed with the outer jacket 6, and may include a connection portion 7 connected to an inner surface of the outer jacket 6 and a support portion 8 having an increased width in a width direction. The ends of the portions 7 are connected to support the pairs of wires 2 or cable cores 4.

A plurality of

recesses

10a and 10b are formed on the upper surface 9 of the support arm 5. The support portions 8 of the support arm 5 are spaced apart from each other to have a shape corresponding to a portion of a circular arc. Accordingly, a first space S1 may be formed between the lower surface of the supporting part 8 and the inner surface of the outer sheath 6, and a second surface S2 and a third surface S3 may be formed in the

grooves

10a and 10b of the upper surface. The support arms 5 9 and the fourth space S4 may be formed between the side surfaces of the support portions 8 of the adjacent support arms 5.

Due to the above-described structure, the cable core 4 can be stably arranged at the center of the communication cable 1 by the support member at the support arm 8 of the support arm 5, and several spaces are supported and fixed on the communication cable 1. The

recesses

10a and 10b in the upper surface 9 of the support arm 5 may be formed in the length direction of the support portion 8. When a specific wire of a specific pair of wires 2 or cable cores 4 is forcibly inserted into the

grooves

10a and 10b, external interference with adjacent cables is reduced. Three

grooves

10a and 10b are spaced apart from each other on the upper surface 9 of the support portion 8 of each spacer, and the number of the

grooves

10a and 10b may be increased or decreased depending on the number of the support arms 5, the width of the support portion 8, the outer diameter of the paired electric wires 2, the pitch of the electric wires 2, and the like.

Since the plurality of support arms 5 are provided, the plurality of support portions 8 have a shape corresponding to portions of circular arcs spaced from each other. The fourth space S4 is ensured in the region where the support portions 8 are spaced apart from each other, but the number of spaces that are vacant in the radial direction by the connecting portions 7 is relatively insufficient.

The connecting portion 7 of the support arm 5 serving as a spacer may be tapered towards the support portion 8. Due to the above structure, it is possible to secure the restoring flexibility of the supporting portion 8 and prevent the connecting portion 7 from being bent, thereby stably supporting the cable core 4. The tapering of the connecting portion 7 of the isolation device towards the support portion 8 may be achieved by configuring the connecting portion 7 with sides oriented in a radial direction.

The protrusions 11a and 11b contacting the cable core 4 may be formed in the upper surface of the support arm 5 so as to be spaced apart from each other in the width direction of the support surface 9. In this case, the protrusions 11a and 11b may be formed to be long in the length direction of the cable. By forming the protrusions 11a and 11b, when the

grooves

10a and 10b are formed, a space can be secured in the cable. Therefore, the width of the space between the protrusions 11a and 11b at the center of the support portion 8 is maximized. The thickness t1 of the outer sheath 6 may be greater than the thickness t2 of the connecting portion 7 of the support arm 5 and the thickness t3' of the protrusions 11a and 11b formed on the support portion 8.

The distance d1 between the protrusions on the central portion of the support surface may be greater than the distance d2 between the protrusions on the edges of the support surface. That is, the width of the support arm 5 provided as the spacer on the inner surface of the outer sheath 6 of the communication cable 1 increases toward the center of the communication cable 1. Therefore, the cable core 4 can be stably supported, and an air layer or a void can be sufficiently ensured in the communication cable 1. Therefore, the total effective dielectric constant of the communication cable 1 is lowered, and therefore, the attenuation margin, the propagation speed margin can improve the performance of the communication cable 1, and the like.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A communications cable, comprising:

electric wires provided in a plurality of pairs, each of the electric wires being constituted by two conductors covered with an insulator in a spirally twisted manner;

an outer sheath covering outer sides of the plurality of pairs of electric wires;

a support arm provided inside the outer sheath and in a plurality of arrangements for respectively supporting a plurality of pairs of the electric wires, avoiding contact of the electric wires with an inner wall of the outer sheath, and forming a space at a support surface of each of the electric wires.

2. A communications cable according to claim 1, wherein: each support arm is integrally disposed with the outer sheath.

3. A communications cable according to claim 2, wherein: each support arm is connected with the inner surface of the outer sheath through a connecting part; the support portion of each of the support arms is configured to support a plurality of pairs of the electric wires; the width of the connecting portion is set gradually smaller toward the electric wire direction.

4. A communications cable according to claim 3, wherein: further comprising a protrusion formed on each support surface in each of the support arms.

5. A communications cable according to claim 4, wherein: the distance between the protrusions on the central portion of the support surface is greater than the distance between the protrusions on the edges of the support surface.

6. A communications cable according to claim 5, wherein: each of the support surfaces in the respective support arms has a circular arc shape.

7. A communications cable according to claim 6, wherein: the outer sheath has a thickness greater than a thickness of the protrusions formed on the plurality of support arms.