High speed cable

Abstract

The utility model discloses a high -speed cable, including at least one conductor and at least one insulator, and insulator cladding in the conductor circumference. The insulator includes a plurality of insulated parts spaced apart along the axial direction, and has a spacing part between the two adjacent insulated parts. A plurality of channels are provided in the insulated part, and the channels are filled with air, which can effectively reduce the dielectric constant of the insulator, thereby reducing the dielectric loss of the cable and improving the communication bandwidth of the cable. The spacing part is spaced apart inside the insulator, and the spacing part is provided between the two adjacent insulated parts, thereby improving the mechanical strength and extrusion resistance of the cable and ensuring the reliable use of the cable.

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 continuous development of high-speed communication, the dielectric loss of cable insulation materials has become the primary limiting factor for high-frequency performance, affecting the transmission performance of cables. Existing technologies reduce dielectric loss by opening through holes in the insulation structure of transmission lines, but this seriously affects their mechanical strength. 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 balance high-frequency dielectric loss control and mechanical reliability.

[0004] This utility model proposes a high-speed cable, comprising: at least one conductor and at least one insulator, wherein the insulator covers the outer periphery of the conductor, and the insulator includes a plurality of insulating portions spaced apart along the axial direction, each of the insulating portions having a plurality of channels, and a spacer portion between two adjacent insulating portions.

[0005] In one embodiment, the channel is located inside the insulating portion, and the channel is circumferentially closed with a circular, rectangular, trapezoidal, or fan-shaped cross-section.

[0006] In one embodiment, the plurality of channels are arranged in a bamboo-like pattern around the conductor. The channels are located inside the insulating portion, and the plurality of channels on the same insulating portion are spaced apart around the conductor. The cross-section of the channel is trapezoidal, with the short side of the trapezoidal structure facing the conductor and the long side facing away from the conductor. The side of the channel away from the conductor has a concave arc-shaped edge.

[0007] In one embodiment, the channel is a circumferentially semi-enclosed structure, and the channel is a through slot opened on the side of the insulating part facing or away from the conductor.

[0008] In one embodiment, at least one through hole is provided on the spacer portion, and the diameter of the through hole is smaller than that of the channel.

[0009] In one embodiment, the through hole is not connected to the channel.

[0010] In one embodiment, there are multiple conductors, and several insulators are independently wrapped around the periphery of a single conductor, with each insulator containing one conductor.

[0011] In one embodiment, there are multiple conductors and one insulator that covers all the conductors.

[0012] In one embodiment, the insulator is a foamed insulator.

[0013] In one embodiment, the high-speed cable further includes a shielding layer and a protective layer; the shielding layer is covered by the insulation, and the protective layer is covered by the shielding layer.

[0014] The high-speed cable of this utility model includes at least one conductor and at least one insulator, with the insulator covering the outer periphery of the conductor. The insulator includes several axially spaced insulating portions, with a spacer between adjacent insulating portions. Several channels are formed within the insulating portions, filled with air, which effectively reduces the dielectric constant of the insulator, thereby reducing the dielectric loss of the cable and increasing its communication bandwidth. The spacers are spaced within the insulator, with a spacer between each adjacent insulating portion, thereby improving the mechanical strength and compression resistance of the cable, ensuring reliable use of the high-speed cable. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a front view structural schematic diagram (single conductor) of an embodiment of the high-speed cable of this utility model;

[0017] Figure 2 This is an axial cross-sectional view (circumferentially closed channel) of an embodiment of the high-speed cable of this utility model;

[0018] Figure 3 This is an axial cross-sectional view (circumferential semi-enclosed channel) of an embodiment of the high-speed cable of this utility model;

[0019] Figure 4 This is an axial cross-sectional view (circumferential semi-enclosed channel) of an embodiment of the high-speed cable of this utility model;

[0020] Figure 5 This is a front view structural schematic diagram (multi-conductor) of an embodiment of the high-speed cable of this utility model;

[0021] Figure 6 This is a front view structural schematic diagram (multi-conductor) of an embodiment of the high-speed cable of this utility model;

[0022] Figure 7 This is a schematic diagram of the main structure of an embodiment of the high-speed cable of this utility model;

[0023] Explanation of icon numbers:

[0024]

[0025]

[0026] 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This utility model proposes a high-speed cable. Please refer to... Figures 1 to 7 The cable includes at least one conductor 1 and at least one insulator 2. The insulator 2 covers the outer periphery of the conductor 1. The insulator 2 includes a plurality of insulating portions 21 spaced apart along the axial direction. Each insulating portion 21 has a plurality of channels 2a. There is a spacer 22 between two adjacent insulating portions 21.

[0032] In this embodiment, conductor 1 is made of conductive material and is used to transmit electrical signals. It is understood that conductor 1 can be a bare copper conductor, a silver-plated copper conductor, etc., and there is no limitation on this. Insulator 2 covers conductor 1, providing insulation protection. Insulator 2 can be made of materials such as FEP, PFA, PE, PP, etc., and can be made of solid plastic or foamed insulating material. Those skilled in the art can design according to actual conditions. The extension direction of conductor 1 is the signal transmission direction of the cable, and the extension direction of insulator 2 is the same as the extension direction of conductor 1. Preferably, when the cable has one conductor, the number of insulators 2 is also one, and insulator 2 covers conductor 1 and is coaxially arranged with conductor 1. Insulator 2 has alternating insulating portions 21 and spacers 22 along the axial direction, with a spacer 22 between adjacent insulating portions 21. Several channels 2a are formed on the insulating portions 21. Channels 2a are air-insulating structures, specifically porous or microporous structures. The cross-section of channel 2a is circular, rectangular, trapezoidal, or fan-shaped, and can be designed according to actual conditions. Understandably, multiple channels 2a are located on the insulation portion 21, and the channels 2a are spaced apart from each other. Preferably, the extending direction of the channels 2a is the same as the extending direction of the conductor 2. In the cross-sectional structure of the insulation portion 21, the channels 2a are groove structures recessed from the cross-section of the insulation portion 21 inward. The number and size of the channels 2a can be designed according to actual needs. The channels 2a are filled with air. Understandably, the dielectric constant of air is less than the dielectric constant of the material used for the insulator 2, that is, filling the channels 2a with air can effectively reduce the dielectric loss of the insulator 2, thereby reducing the loss of the cable in signal propagation, which is beneficial to improving the cable communication bandwidth and realizing high-speed signal interconnection. Preferably, the channels 2a are symmetrically distributed along the axis of the conductor 1. Since multiple channels 2a are opened inside the insulation portion 21, the insulator 2 cannot provide the necessary protection for the cable when it is compressed. The spacer portion 22 provides internal support for the insulator 2, which can effectively enhance the internal mechanical strength and compression resistance of the cable. The insulation portion 21 with channel 2a and the spacer portion 22 are alternately distributed, which can effectively ensure the mechanical reliability of the cable while reducing dielectric loss.

[0033] Furthermore, channel 2a can be designed as a circumferentially closed structure or a circumferentially semi-closed structure.

[0034] In one embodiment, please refer to Figure 2The channel 2a is located inside the insulating part 21 and is a circumferentially closed structure. The cross-section of the channel 2a can be designed as a rectangle, trapezoid, fan or circle, etc. Air is filled inside the channel 2a to reduce the dielectric loss caused by the insulating medium.

[0035] In another embodiment, please refer to Figure 7 The channels 2a are arranged in a bamboo-like pattern around the conductor 1. The channels 2a are located inside the insulating portion 21, and the channels 2a on the same insulating portion 21 are spaced apart around the conductor 1. The cross-section of the channel 2a is trapezoidal, with the short side facing the conductor 1 and the long side facing away from the conductor 1. The side of the channel 2a away from the conductor 1 has a concave arc-shaped edge. It is understood that the compact distribution of the trapezoidal channels 2a can significantly reduce dielectric loss.

[0036] In another embodiment, please refer to Figure 3 The channel 2a is a circumferentially semi-enclosed structure, and several through slots are opened on the end face of the insulating part 21 facing the conductor 1. It can be understood that the slot wall and the outer periphery of the conductor 1 enclose the channel 2a filled with air, and multiple channels 2a are arranged close to the outer periphery of the conductor 1 and around the conductor 1.

[0037] In another embodiment, please refer to Figure 4 The channel 2a has a circumferential semi-enclosed structure, and several through slots are formed on the end face of the insulating part 21 away from the conductor 1. An outer sheath can be provided outside the insulating part 21, in which case the slot wall and the inner wall of the outer sheath together form the air-filled channel 2a.

[0038] Understandably, the channel 2a can also be designed such that through slots are opened on both the side end faces of the insulating part 21 facing and away from the conductor 1. The through slot facing the conductor 1 and the outer periphery of the conductor 1 form an air-filled channel 2a, and the through slot away from the conductor 1 and the inner wall of the outer sheath together form an air-filled channel 2a, thereby forming a radial through channel.

[0039] Preferably, depending on the different structural designs of the insulator 2, the insulator 2 can be integrally molded or segmented molded during the cable manufacturing process to reduce the difficulty of molding the channel 2a and facilitate cable production.

[0040] Furthermore, the spacer 22 may be a solid insulating structure or an insulating structure with several micropores.

[0041] In one embodiment, at least one through hole is provided on the spacer 22, the diameter of which is smaller than that of the channel 2a. It is understood that the shape and number of through holes can be designed according to actual needs. The through holes are filled with air, which can further reduce the dielectric loss of the insulator 2.

[0042] In one embodiment, the through hole is not connected to the channel 2a.

[0043] Furthermore, the length of the insulation portion 21 extending along the axial direction of the conductor 1 is greater than the length of the spacer portion 22 extending along the axial direction. The length ratio of the insulation portion 21 and the spacer portion 22 can be designed according to actual needs, so as to optimize the reduction of dielectric loss while ensuring the mechanical strength of the cable.

[0044] Furthermore, there are multiple conductors 1, and several insulators 2 are independently wrapped around the outer periphery of a single conductor 1, with each insulator 2 containing a conductor 1.

[0045] Specifically, the number of insulators 2 is the same as the number of conductors 1. Multiple insulators 2 are arranged one-to-one around the outer periphery of multiple conductors 1. The multiple conductors 1 are spaced apart, which can effectively improve the stability of cable signal transmission.

[0046] In one embodiment, please refer to Figure 5 The high-speed cable has two conductors 1 arranged side by side and two insulators 2. The outer periphery of the two conductors 1 is covered by insulators 2, forming two sets of core wire structures. Each set of core wire structures has insulation portions 21 and spacers 22 that are alternately distributed along the axial direction. The dielectric loss of the core wire structure is effectively reduced through several channels 2a, and the mechanical stability of the core wire is effectively improved through the insulation layer of the spacers 22.

[0047] Understandably, the channel 2a on the multi-core wire structure can be designed with different structures, including either a circumferentially closed structure channel 2a or a circumferentially semi-closed structure channel 2a, depending on the actual situation.

[0048] Further, please refer to Figure 6 There are multiple conductors 1 and one insulator 2, which covers all conductors 1.

[0049] In one embodiment, the high-speed cable has two conductors 1 arranged side by side and an insulator 2. The insulator 2 encloses both conductors 1, and the two conductors 1 are spaced apart inside the insulator 2 to form a core wire structure. This core wire structure has multiple insulating portions 21 and multiple spacer portions 22 alternately arranged along the axial direction, and multiple channels 2a are distributed spaced around the periphery of the two conductors 1. The channels 2a effectively reduce the dielectric loss of the core wire structure, and the insulating layer of the spacer portions 22 effectively improves the mechanical stability of the core wire.

[0050] Further, please refer to Figures 1 to 6 The cable also includes a shielding layer 3 and a protective layer 4; the insulator 2 is covered with the shielding layer 3, and the shielding layer 3 is covered with the protective layer 4.

[0051] Specifically, an outer sheath can be provided outside the first insulation layer 11 to protect the internal structure. The outer sheath can have various structures. Preferably, the outer sheath consists of a shielding layer 3 and a protective layer 4. The shielding layer 3 can be made of materials such as copper foil, aluminum foil, or silver-plated copper foil; preferably, the shielding layer 3 is heat-fused self-adhesive. The shielding layer 3 covers the outer periphery of the conductor 1 and the insulator 2, effectively suppressing signal interference. Preferably, it is longitudinally wrapped. Understandably, multiple shielding layers 3 can be provided inside the cable to improve the shielding effect. The protective layer 4 can be made of Mylar or other flame-retardant materials, covering the outside of the shielding layer 3, 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.

[0052] Understandably, the high-speed cable provided in this application also has a ground wire structure. The ground wire can be a single wire or multiple wires, and it is located between the protective layer 4 and the shielding layer 3, or between the shielding layer 3 and the insulator 2. The ground wire is electrically connected to the shielding layer 3 to provide grounding protection for the cable.

[0053] 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.

[0054] 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, include: At least one conductor (1) and At least one insulator (2) is provided, the insulator (2) covers the outer periphery of the conductor (1), the insulator (2) includes a plurality of insulating portions (21) spaced apart along the axial direction, each insulating portion (21) is provided with a plurality of channels (2a), and there is a spacer (22) between two adjacent insulating portions (21).

2. The high-speed cable as described in claim 1, characterized in that, The channel (2a) is located inside the insulating part (21), and the channel (2a) is circumferentially closed and has a circular, rectangular or fan-shaped cross-section.

3. The high-speed cable as described in claim 1, characterized in that, The channels are arranged in a bamboo-like pattern around the conductor.

4. The high-speed cable as described in claim 3, characterized in that, The channel (2a) is located inside the insulating part (21). A plurality of channels (2a) on the same insulating part (21) are distributed around the conductor (1) at intervals. The cross-section of the channel (2a) is trapezoidal. The short side of the trapezoidal structure faces the conductor (1) and the long side faces away from the conductor (1). The side of the channel (2a) away from the conductor (1) has an inwardly recessed arc edge.

5. The high-speed cable as described in claim 1, characterized in that, The channel (2a) is a circumferential semi-enclosed structure, and the channel (2a) is a through slot opened on the side of the insulating part (21) facing or away from the conductor (1).

6. The high-speed cable as described in claim 1, characterized in that, At least one through hole is provided on the spacer (22), and the diameter of the through hole is smaller than that of the channel (2a).

7. The high-speed cable as described in claim 6, characterized in that, The through hole is not connected to the channel (2a).

8. The high-speed cable as described in claim 1, characterized in that, There are multiple conductors (1) and one insulator (2), which covers all the conductors (1).

9. The high-speed cable as described in claim 1, characterized in that, The insulator (2) is a foamed insulator.

10. The high-speed cable as described in claim 1, characterized in that, It also includes a shielding layer (3) and a protective layer (4); the insulator (2) is covered with a shielding layer (3), and the shielding layer (3) is covered with a protective layer (4).

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