High speed cable

Abstract

The utility model discloses a high -speed cable, including two side -by -side parallelly arranged conductor, two conductor outside setting have foamed insulating layer and non -foamed insulating layer. Two conductor outside setting foamed insulating layer can effectively reduce dielectric constant, optimize cable transmission performance, be favorable to improve cable communication bandwidth, realize the high -speed transmission of signal.

Description

Technical Field

[0001] This utility model relates to the field of communication cable technology, specifically to a high-speed cable. Background Technology

[0002] With the development of high-speed communication, the requirements for signal transmission speed of two-core cables are constantly increasing. The dielectric loss of cable insulation material has become the primary limiting factor for high-speed performance. Usually, the signal transmission speed of two-core cables depends on the dielectric constant of the outer insulator covering the conductor. Therefore, foamed insulators are often used to improve the transmission performance of cables. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed cable that can effectively reduce dielectric loss in signal propagation and achieve high-speed signal interconnection.

[0004] This utility model proposes a high-speed cable, comprising two conductors arranged side by side and extending in parallel; the two conductors are covered with a foamed insulation layer and a non-foamed insulation layer.

[0005] In one embodiment, the foamed insulating layer covers the two conductors; the non-foamed insulating layer covers the foamed insulating layer as an outer layer.

[0006] In one embodiment, the non-foamed insulating layer serves as an inner sheath covering the two conductors, and the foamed insulating layer covers the outer side of the inner sheath.

[0007] In one embodiment, the foamed insulation layer is covered with an outer sheath.

[0008] In one embodiment, the outer sheath is extruded from high-density polyethylene or cross-linked polyethylene on the outer wall of the foamed insulation layer.

[0009] In one embodiment, the conductor is a single-strand copper wire, a single-strand silver-plated copper wire, or a stranded wire.

[0010] In one embodiment, the cross-section of the foamed insulation layer is elliptical or racetrack-shaped.

[0011] In one embodiment, the foamed insulation layer is a polypropylene or polyethylene physical foam layer.

[0012] In one embodiment, the outer sheath is covered with a metal shielding layer, and the metal shielding layer is covered with a protective layer.

[0013] This utility model relates to a high-speed cable comprising two parallel conductors arranged side-by-side, with a foamed insulation layer and a non-foamed insulation layer surrounding the two conductors. The foamed insulation layer effectively reduces the dielectric constant, optimizes cable transmission performance, and facilitates increased communication bandwidth, enabling high-speed signal transmission. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic cross-sectional view of an embodiment of the high-speed cable of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of an embodiment of the high-speed cable of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of an embodiment of the high-speed cable of this utility model;

[0018] Explanation of icon numbers:

[0019] 1. Conductor; 2. Inner sheath; 3. Foamed insulation layer; 4. Outer sheath

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This utility model proposes a high-speed cable. Please refer to... Figures 1 to 3 The high-speed cable includes two conductors 1 arranged side by side and extending in parallel; the two conductors 1 are covered with a foamed insulation layer 3 and a non-foamed insulation layer.

[0026] Specifically, the non-foamed insulation layer can be an inner sheath 2 disposed between the foamed insulation layer 3 and the conductor 1, or an outer sheath 4 covering the outside of the foamed insulation layer 3.

[0027] In one embodiment, please refer to Figure 1 A non-foamed insulation layer, serving as the inner sheath 2, covers the two conductors 1, while a foamed insulation layer 3 covers the inner sheath 2. An outer sheath 4 covers the foamed insulation layer 3. The inner sheath 2 tightly covers the outer periphery of the conductors 1. The foamed insulation layer 3 around the two conductors 1 effectively reduces the dielectric constant and optimizes cable transmission performance. It is understood that the foamed insulation layer 3 covers the two conductors 1; the non-foamed insulation layer includes the inner sheath 2 located between the foamed insulation layer 3 and the conductors 1, and the outer sheath 4 covering the foamed insulation layer 3.

[0028] In another embodiment, please refer to Figure 2 The foamed insulation layer 3 covers the two conductors 1; the non-foamed insulation layer 4 is used as an outer sheath to cover the foamed insulation layer 3.

[0029] In another embodiment, please refer to Figure 3A non-foamed insulation layer, acting as an inner sheath 2, covers the two conductors 1, while a foamed insulation layer 3 covers the inner sheath 2. It is understood that the foamed insulation layer 3 covers the two conductors 1; the non-foamed insulation layer is the inner sheath 2 located between the foamed insulation layer 3 and the conductors 1, covering the outer periphery of the conductors 1. Adding an inner sheath 2 between the foamed insulator 3 and the conductors 1 reduces signal propagation loss in the cable, which is beneficial for increasing the cable's communication bandwidth and enabling high-speed signal transmission.

[0030] Understandably, conductor 1 is selected as a single-strand or stranded wire, which can be made of copper, aluminum, silver, or various alloy wires. Furthermore, conductor 1 may also have a plating layer formed of aluminum, silver, or tin. The foamed insulator 3 can be a single-layer foam or a combination of multiple foams. Preferably, the foaming degree of the foamed insulator 3 is above 50%. The foaming degree of the foamed insulator 3 can also be designed according to actual needs. When the foaming degree is insufficient, the dielectric constant of the foamed insulator 3 is high, affecting the transmission performance of the cable; when the foaming degree is too high, the mechanical strength of the cable will be significantly reduced. Therefore, an appropriate foaming degree can be selected according to actual needs to optimize and reduce dielectric loss while ensuring the mechanical strength of the cable.

[0031] In one embodiment, the foamed insulation layer 3 is a physically foamed layer of polypropylene or polyethylene. It has small bubble diameters, a uniform and moderate degree of foaming, and low dielectric loss. The cross-section of the foamed insulation layer 3 is elliptical or racetrack-shaped.

[0032] Furthermore, a non-foamed or low-foamed coating layer can be extruded onto the outer periphery or inner wall of the foamed insulator 3. The coating layer on the inner wall of the foamed insulator 3 is the inner sheath 2, and the coating layer on the outer periphery of the foamed insulator 3 is the outer sheath 4. The outer sheath 4 is extruded from high-density polyethylene or cross-linked polyethylene onto the outer wall of the foamed insulation layer 3.

[0033] In one embodiment, please refer to Figure 1 The high-speed cable consists of two parallel conductors 1 and a three-layer structure integrally covering the outer periphery of the two conductors 1. From the inside out, the high-speed cable comprises conductor 1, inner sheath 2, foamed insulation 3, and outer sheath 4. The inner sheath 2 tightly covers the outer periphery of conductor 1, and the outer surface of the inner sheath 2 is in close contact with the inner wall of the foamed insulation 3. The outer sheath 4 covers the outer periphery of the foamed insulation 3.

[0034] In another embodiment, please refer to Figure 2 The high-speed cable is formed by two parallel conductors 1 arranged side by side and a double-layer structure that is integrally wrapped around the outer periphery of the two conductors 1. The high-speed cable consists of conductors 1, foamed insulation 3 and outer sheath 4 arranged from the inside to the outside. The foamed insulation layer 3 tightly wraps around the two conductors 1, and the outer sheath 4 wraps around the outer periphery of the foamed insulation 3.

[0035] In another embodiment, please refer to Figure 3The high-speed cable is formed by two parallel conductors 1 and a double-layer structure that is integrally wrapped around the outer periphery of the two conductors 1. The high-speed cable consists of conductor 1, inner sheath 2 and foamed insulation 3 from the inside out. The inner sheath 2 tightly wraps around the outer periphery of the conductor 1, and the outer peripheral surface of the inner sheath 2 is in close contact with the inner wall of the foamed insulation 3.

[0036] Furthermore, the outer sheath 4 is covered with a metal shielding layer, and the metal shielding layer is covered with a protective layer.

[0037] Specifically, high-speed cables can be equipped with an outer layer structure to protect the internal components. Understandably, various structures can be chosen for the outer layer. Preferably, the outer layer consists of a metal shielding layer and a protective layer. The metal shielding layer can be made of materials such as copper foil, aluminum foil, or silver-plated copper foil; preferably, the metal shielding layer is heat-fused self-adhesive. The metal shielding layer covers the outer periphery of the outer sheath 4, effectively suppressing signal interference. Preferably, the metal shielding layer is longitudinally wrapped. Understandably, high-speed cables can have multiple metal shielding layers to improve the shielding effect. The protective layer can be made of Mylar or other flame-retardant materials, covering the outside of the metal shielding layer, providing mechanical protection for the entire cable, improving the cable's temperature resistance and flame retardant performance, and enhancing the overall stability of the cable.

[0038] Understandably, the high-speed cable provided in this application also has a ground wire structure. The ground wire can be single or multiple, and is located between the protective layer and the metal shielding layer, or between the metal shielding layer and the outer sheath. The ground wire is electrically connected to the metal shielding layer to provide grounding protection for the cable.

[0039] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A high-speed cable, characterized in that, It includes two conductors (1) arranged side by side and extending in parallel; the two conductors (1) are covered with a foamed insulation layer (3) and a non-foamed insulation layer.

2. The high-speed cable as described in claim 1, characterized in that, The foamed insulation layer (3) covers the two conductors (1); the non-foamed insulation layer (4) covers the foamed insulation layer (3).

3. The high-speed cable as described in claim 1, characterized in that, The non-foamed insulating layer serves as an inner sheath (2) covering the two conductors (1), and the foamed insulating layer (3) covers the inner sheath (2).

4. The high-speed cable as described in claim 3, characterized in that, The foamed insulation layer (3) is covered with an outer sheath (4).

5. The high-speed cable as described in claim 2 or 4, characterized in that, The outer sheath (4) is extruded from high-density polyethylene or cross-linked polyethylene on the outer wall of the foamed insulation layer (3).

6. The high-speed cable as described in claim 1, characterized in that, The conductor (1) is a single-strand copper wire, a single-strand silver-plated copper wire, or a stranded wire.

7. The high-speed cable as described in claim 1, characterized in that, The cross-section of the foamed insulation layer (3) is elliptical or racetrack-shaped.

8. The high-speed cable as described in claim 1, characterized in that, The foamed insulation layer (3) is a physical foamed layer of polypropylene or polyethylene.

9. The high-speed cable as described in claim 5, characterized in that, The outer cover (4) is covered with a metal shielding layer, and the metal shielding layer is covered with a protective layer.

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