A high-speed transmission line core wire and cable with irregular structure

Abstract

This utility model relates to a high-speed transmission line core and cable with an irregular structure, including a central conductor and an outer insulation layer outside the central conductor. An insulating support is sleeved between the outer insulation layer and the central conductor. The outer surface of the insulating support has grooves distributed along the length of the central conductor, forming air holes between the grooves and the outer insulation layer. This utility model adopts an independent insulating support design, and the grooves are pre-set on the insulating support, forming air holes with the outer insulation layer. This ensures that the air hole structure in the core wire is more stable, more precise, and less prone to deformation, resulting in a lower dielectric constant for the entire cable and further reducing insertion loss. This can meet the requirements of higher bandwidth data transmission. A ground wire is set between the shielding layer and the thermofused Mylar layer of the cable, ensuring that the equipment is fully grounded and improving safety performance. At the same time, placing the ground wire outside the shielding layer more effectively shields the interference of external electrical signals on internal signals.

Description

Technical Field

[0001] This utility model relates to the field of high-speed electronic signal transmission connection technology, and more specifically, to a high-speed transmission line core and cable with an irregular structure. Background Technology

[0002] For transmission cables with speeds of 224G / 448G and higher, the common structure on the market mainly consists of a center conductor and an insulation layer made using a foaming process, with the insulation layer having a porous foam structure. These cables have a high dielectric constant, making them unsuitable for higher bandwidth data transmission requirements. Furthermore, these cables are larger in size, have lower stability, and higher losses, failing to meet the demands of smaller transmission equipment space, smaller wire diameters, and lower losses, thus hindering the improvement of cable transmission speeds.

[0003] Based on the current market situation, some methods of extruding the insulation layer outside the center conductor in one molding process, setting up air channels in a lotus root-like distribution, and setting air holes in the insulation layer outside the center conductor are prone to defects such as incomplete shape, inconsistent size, and deformation of air holes in actual manufacturing process. Furthermore, the air channel structure formed is unstable, and problems such as air hole collapse may even occur, thereby affecting the performance transmission of high-speed wires, resulting in unstable manufacturing process and low product yield. Utility Model Content

[0004] In view of this, one of the objectives of this utility model is to provide a high-speed transmission line core with a non-standard structure that is structurally stable and has a high transmission speed.

[0005] Another objective of this invention is to provide a cable with a stable structure and high transmission speed.

[0006] The objective of this utility model is achieved through the following technical solution: A high-speed transmission line core with an irregular structure includes a central conductor and an outer insulating layer located outside the central conductor. An insulating support is sleeved between the outer insulating layer and the central conductor. The outer surface of the insulating support has grooves distributed along the length of the central conductor, and air holes are formed between the grooves and the outer insulating layer.

[0007] As an optimization of the above solution, the grooves are parallel to the axis of the insulating bracket in the length direction and are evenly distributed on the outer surface of the bracket.

[0008] As another optimization of the above solution, the grooves are multiple grooves evenly distributed on the outer surface of the support, and are all arranged in a spiral shape along the outer surface of the insulating support.

[0009] The insulating bracket and the outer insulating layer are both made of Teflon, and their contact surfaces are tightly fused together through an extrusion process.

[0010] A cable includes a high-speed transmission line core with an irregular structure, wherein the core is two parallel cores, and a sheathing layer, a shielding layer, and a heat-fused Mylar layer are sequentially arranged outside the two cores. A ground wire is arranged outside the shielding layer and the heat-fused Mylar layer or the sheathing layer and the shielding layer.

[0011] As an optimization of the above solution, the shielding layer is formed by wrapping copper foil or aluminum foil around the outer periphery of the covering layer.

[0012] As an optimization of the above solution, the ground wire is a silver-plated or tin-plated copper wire, consisting of one or two wires, located between the shielding layer and the hot-melt Mylar layer or the covering layer and the shielding layer.

[0013] As an optimization of the above solution, the coating layer is formed by single-layer or multi-layer e-PTFE foaming, or by wrapping e-PTFE foam tape, or by extruding a single layer of PE or PP or insulating Teflon.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The independent insulating support design is adopted, and the groove is pre-set on the insulating support to form an air hole with the outer insulation layer. This ensures that the air hole structure in the core wire is more stable, more precise, and less prone to deformation. It can also make the dielectric constant of the entire cable lower, further reducing insertion loss and meeting the needs of higher bandwidth data transmission.

[0015] 2. Compared with the existing air hole structure formed by extrusion molding, this structure design is easier to manufacture, has a lower defect rate, lower production cost, and higher production efficiency.

[0016] 3. The insulating tube, outer insulation layer and inner insulation layer are all made of Teflon material, which makes the core wire layers more fused and the layers more tightly connected, resulting in a stable structure and improved physical properties such as bending resistance and tensile strength of the core wire, thus improving reliability.

[0017] 4. A ground wire is provided between the shielding layer and the thermoplastic Mylar layer of the cable to ensure that the equipment is fully grounded and improve safety performance. At the same time, placing the ground wire outside the shielding layer can more effectively shield the interference of external electrical signals to internal signals.

[0018] 5. The core wire and cable have a smaller overall size and occupy less space. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the center conductor and insulating support of a high-speed transmission line with an irregular shape, as shown in the example.

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the core wire of a high-speed transmission line with an irregular shape, as shown in the example.

[0022] Figure 3 To adopt Figure 2 A schematic diagram of the cross-sectional structure of a cable with a core wire structure.

[0023] Reference numerals: 1-Center conductor; 2-Outer insulation layer; 3-Insulation support; 31-Groove; 32-Air hole; 4-Covering layer; 5-Shielding layer; 6-Hot melt Mylar layer; 7-Ground wire. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer and more complete, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] Details are as attached Figure 1 Appendix Figure 2 As shown in the figure. This embodiment discloses a high-speed transmission line core wire with an irregular structure. The core wire includes a central conductor 1 and an outer insulation layer 2 made of Teflon material located outside the central conductor 1. An insulating support 3 made of the same Teflon material is sleeved between the outer insulation layer 2 and the central conductor 1. The outer surface of the insulating support 3 has multiple grooves 31 distributed along the length direction of the central conductor (in specific implementations, the number of grooves is generally more than 4). Air holes 32 are formed between the grooves 31 and the outer insulation layer.

[0027] In the core wire manufacturing process described above, an insulating support 3 is first extruded onto the central conductor 1, and then an outer insulating layer 2 is formed on the outside of the insulating support 3. This two-step process ensures that the insulating support 3 provides sufficient support to guarantee the dimensional accuracy of the air hole 32 during its formation, and also ensures the stability of the shape of the air hole 32, preventing collapse, deformation, or other defects. Furthermore, since both the insulating support 3 and the outer insulating layer 2 are made of Teflon, their contact surfaces are tightly fused together through the extrusion process, resulting in better fusion of the core wire layers, a tighter interlayer structure, and improved physical properties such as bending and tensile strength. This enhances reliability and allows for a lower dielectric constant in the entire cable, further reducing insertion loss and making it more suitable for transmitting high-speed signals.

[0028] In this embodiment, the length direction of each groove 31 is parallel to the axis of the insulating support 3, and they are evenly distributed outside the central conductor 1. Of course, the grooves 31 can be arranged parallel to the direction of the central conductor 1, or they can be arranged spirally along the outer surface of the insulating support, achieving the same technical effect.

[0029] For example, see attached Figure 3 As shown, this is an example of using an appendix. Figure 2 A schematic diagram of the cross-sectional structure of the cable with the core wire. The cable includes two parallel core wires. Outside the two core wires, there are a sheathing layer 4, a shielding layer 5, and a heat-fused Mylar layer 6 arranged in sequence. A ground wire 7 is arranged between the shielding layer 5 and the heat-fused Mylar layer 6. This structure can protect the internal core wires and improve the shielding effect of interference signals, thereby improving the stability of the internal structure of the cable and the reliability of signal transmission, making it more suitable for high-speed data transmission equipment.

[0030] The covering layer 4 is formed by single-layer or multi-layer e-PTFE foaming. The shielding layer 5 is formed by wrapping copper foil or aluminum foil around the covering layer 4. The shielding layer 5 and the hot-melt Mylar layer 6 form a double-layer shield, which greatly improves the anti-interference effect of the cable.

[0031] In addition, the cladding layer 4 structure can be formed by wrapping e-PTFE foam tape, or by extruding a single layer of PE or PP or insulating Teflon.

[0032] In this embodiment, two ground wires 7 are provided, located between the shielding layer 5 and the thermoplastic Mylar layer 6, ensuring adequate grounding of the equipment and improving safety performance. Simultaneously, placing the ground wires outside the shielding layer 5 more effectively shields external electrical signals from interfering with internal signals. Of course, the ground wires can also be located between the shielding layer 5 and the sheathing layer 4, achieving the same technical effect. Furthermore, the number of ground wires can be one, or even omitted depending on the cable application. In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed transmission line core with an irregular structure, comprising a center conductor (1) and an outer insulation layer (2) located outside the center conductor, characterized in that, An insulating support (3) is fitted between the outer insulating layer and the central conductor. The outer surface of the insulating support has grooves (31) distributed along the length of the central conductor, and air holes (32) are formed between the grooves and the outer insulating layer.

2. The profiled high-speed transmission line core of claim 1, wherein, The grooves are parallel to the axis of the insulating bracket along their length and are evenly distributed on the outer surface of the bracket.

3. The profiled high-speed transmission line core of claim 1, wherein, The grooves are multiple and evenly distributed on the outer surface of the support, and are arranged in a spiral shape along the outer surface of the insulating support.

4. The profiled high-speed transmission line core of claim 1, wherein, The insulating bracket and the outer insulating layer are both made of Teflon, and their contact surfaces are tightly fused together through an extrusion process.

5. A cable, characterized by The high-speed transmission line core wire with irregular structure as described in claim 1 is a parallel pair of core wires. A sheathing layer (4), a shielding layer (5), and a hot-melt Mylar layer (6) are sequentially arranged outside the two core wires. A ground wire (7) is arranged between the shielding layer and the hot-melt Mylar layer or between the sheathing layer and the shielding layer.

6. The cable of claim 5, wherein, The shielding layer is formed by wrapping copper foil or aluminum foil around the outer edge of the covering layer.

7. The cable of claim 5, wherein, The ground wire is a silver-plated or tin-plated copper wire, consisting of one or two wires, located between the shielding layer and the hot-melt Mylar layer or the covering layer and the shielding layer.

8. The cable of claim 5, wherein, The coating layer is formed by single-layer or multi-layer e-PTFE foaming, or by wrapping e-PTFE foam tape, or by extruding a single layer of PE, PP or insulating Teflon.

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