High-speed parallel transmission line with stable structure

Abstract

The utility model relates to the technical field of communication cables, in particular to a high-speed parallel transmission line with a stable structure. Comprising at least one signal line pair, a first shielding layer, a braid layer and an outer sheath, the first shielding layer, the braid layer and the outer sheath sequentially wrap the outer side of the signal line pair, each signal line pair comprises two core wires composed of conductors and insulating layers, a ground wire, a second shielding layer and a wrapping tape, the core wires and the ground wire are wrapped with the second shielding layer and the wrapping tape, and the two core wires and the ground wire are bonded through non-anaerobic UV glue. The non-anaerobic UV glue is cured under the irradiation of ultraviolet light, so that the signal wire pairs with stable structures are obtained, when a plurality of signal wire pairs are arranged on a cage stranding machine for pair stranding, the influence of disturbance of environment and equipment on the structure positions of two core wires during wrapping and pair stranding can be reduced, the positions of the two parallel core wires are prevented from being changed, and the stability of the signal wire pairs is improved. And each wire pair can be kept stable during cage stranding, so that a high-speed cable with stable attenuation, differential impedance, internal delay difference and differential mode-common mode conversion between two ports can be obtained.

Description

Technical Field

[0001] The present application relates to the technical field of communication cables, and in particular to a high-speed parallel transmission line with a stable structure. Background Art

[0002] In order to meet wider bandwidth and higher data transmission rate, parallel wire pairs came into being. However, the parallel wire pairs in high-speed cables are easily disturbed by the environment during extrusion and wrapping, and the wrapping tape will cause the core wire and the ground wire to move slightly under high-speed rotation, resulting in the relative position of the two parallel core wires to change, causing the electrical performance such as differential impedance, intra-pair delay difference and differential mode-common mode conversion between the two ports to be unstable, or even substandard, resulting in unstable electrical performance of the cable. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a high-speed parallel transmission line with a stable structure, comprising at least one group of signal line pairs, a first shielding layer, a braided layer and an outer sheath sequentially coated on the outside of the signal line pair, the signal line pair comprising two core wires consisting of conductors and insulating layers, a ground wire, and a second shielding layer and a wrapping tape coated on the core wires and the ground wire, and the two core wires and the ground wire are bonded by non-anaerobic UV glue.

[0004] Preferably, the conductor is one of solid copper, bare stranded copper, tinned copper, silver-plated copper and alloy copper.

[0005] Preferably, the insulating layer is made of one of polyethylene, polypropylene, polyvinyl chloride and fluoroplastic.

[0006] Preferably, the second shielding layer is aluminum foil and aluminum-plastic composite tape.

[0007] Preferably, the ground wire is arranged between the two core wires.

[0008] Preferably, the ground wire is arranged on both sides of the two core wires.

[0009] Preferably, the wrapping tape is composed of one or both of a PET tape and a foamed PP tape.

[0010] From the above, it can be seen that the application of the present application can obtain the following beneficial effects: this solution obtains a signal line pair with stable structure by bonding the two core wires of the signal line pair and between the core wire and the ground wire with non-anaerobic UV glue, and the non-anaerobic UV glue is cured under ultraviolet light. When multiple signal line pairs are placed on a cage twisting machine for twisting, since the signal line pairs are structurally stable under the action of the non-anaerobic UV glue, the non-anaerobic UV glue bonding can further ensure that the disturbance of the environment and equipment during wrapping and twisting affects the structural position of the two core wires, thereby avoiding changes in the positions of the two parallel core wires. Each line pair can remain stable during cage twisting, and finally a high-speed cable with stable attenuation, differential impedance, intra-pair delay difference and differential mode-common mode conversion between the two ports is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the description of the embodiments of the present application or the prior art are briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0012] Figure 1 This is a schematic diagram of a high-speed parallel transmission line structure with a stable structure according to an embodiment of the present application;

[0013] Figure 2 This is a schematic diagram of the signal line pair structure of an embodiment of the present application;

[0014] Figure 3 This is a schematic diagram of the signal line pair structure of other implementation methods of the embodiments of the present application. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0016] In order to solve the above technical problems, this embodiment provides a high-speed parallel transmission line with a stable structure, such as Figure 1-2As shown, it includes at least one group of signal wire pairs 1, and a first shielding layer 2, a braided layer 3 and an outer sheath 4 sequentially coated on the outside of the signal wire pair 1, two core wires of the signal wire pair 1, a ground wire 1-4, and a second shielding layer 1-5 and a wrapping tape 1-6 coated on the core wire and the ground wire 1-4, the core wire is composed of a conductor 1-1 and an insulating layer 1-2, the two core wires and the core wire and the ground wire 1-4 are bonded by non-anaerobic UV glue 1-3, and the non-anaerobic UV glue 1-3 is cured under ultraviolet light, so as to obtain a signal wire pair 1 with a stable structure, and then a plurality of signal wire pairs 1 are placed The signal line pair 1 is twisted on a cage twisting machine. Since the structure of the signal line pair 1 is very stable under the action of the non-anaerobic UV glue 1-3, the non-anaerobic UV glue bonding can further ensure that the disturbance of the environment and equipment during wrapping and twisting will not affect the structural position of the two core wires, thereby avoiding the change of the position of the two parallel core wires. At the same time, ultraviolet light can not only cure the non-anaerobic UV glue, but also cross-link the insulating material, thereby improving the heat resistance, chemical resistance, mechanical and insulation properties of the core wire, and finally obtaining a high-speed cable with stable attenuation, differential impedance, intra-pair delay difference and differential mode-common mode conversion between the two ports.

[0017] Specifically, the conductor 1-1 is one of solid copper, bare stranded copper, tinned copper, silver-plated copper and alloy copper, and the material of the insulating layer 1-2 is one of polyethylene, polypropylene, polyvinyl chloride and fluoroplastics. The insulating layer 1-2 protects and insulates the conductor 1-1.

[0018] Furthermore, the second shielding layer 1-5 is an aluminum foil and aluminum-plastic composite tape, which shields the internal core wire to prevent signal interference, and the wrapping tape 1-6 is composed of one or both of a PET tape and a foamed PP tape.

[0019] Furthermore, the ground wire 1-4 is arranged between the two core wires. The two core wires and the ground wires 1-4 are bonded to each other by non-anaerobic UV glue 1-3, and the non-anaerobic UV glue 1-3 is cured under ultraviolet light, so as to obtain a signal wire pair 1 with a stable structure, and then the plurality of signal wire pairs 1 are cage-twisted, and each wire pair can maintain a stable structure during cage-twisting, and finally a high-speed communication cable with stable performance is obtained.

[0020] It is also possible that in some other implementations, such as Figure 3 As shown, the ground wire 1-4 is arranged on both sides of the two core wires, the two core wires are bonded by non-anaerobic UV glue 1-3, and the ground wire 1-4 and the two core wires are bonded by non-anaerobic UV glue 1-3, thereby obtaining a signal wire pair 1 with a stable structure.

[0021] In the process of making the line pair, first select the appropriate material, and adjust the temperature of each section of the extruder. Coat the insulation layer 1-2 on the conductor 1-1 to obtain the core wire with performance standard. After passing the test, move it to the wrapping machine, place the core wire and the ground wire 1-4 on the wrapping machine, and adjust the appropriate tension for wrapping. It should be noted that during wrapping, the core wires and the core wires, and the core wires and the ground wires are bonded by non-anaerobic UV glue, and the non-anaerobic UV glue can be cured by ultraviolet light, and the curing speed is adjustable. Finally, a high-speed communication signal line pair 1 with stable structure and performance is obtained. Then, multiple signal line pairs 1 are placed on a cage twisting machine for twisting. Since the two core wires in the signal line pair 1 are structurally stable under the action of glue, each line pair remains stable during subsequent cage twisting, and finally a high-speed communication cable with stable performance is obtained.

[0022] In summary, the present application scheme obtains a signal line pair with a stable structure by bonding the two core wires of the signal line pair and between the core wire and the ground wire with non-anaerobic UV glue, and the non-anaerobic UV glue is cured under ultraviolet light. When multiple signal line pairs are placed on a cage twisting machine for twisting, the signal line pairs are structurally stable under the action of the non-anaerobic UV glue. The non-anaerobic UV glue bonding can further ensure that the disturbance of the environment and equipment during wrapping and twisting affects the structural position of the two core wires, thereby avoiding changes in the positions of the two parallel core wires. Each line pair can remain stable during cage twisting, and finally a high-speed cable with stable attenuation, differential impedance, intra-pair delay difference, and differential mode-common mode conversion between the two ports is obtained.

[0023] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A high-speed parallel transmission line with a stable structure, characterized by: The invention comprises at least one group of signal wire pairs (1), a first shielding layer (2), a braided layer (3) and an outer sheath (4) sequentially coated on the outside of the signal wire pairs (1), the signal wire pairs (1) comprising two core wires consisting of a conductor (1-1) and an insulating layer (1-2), a ground wire (1-4), and a second shielding layer (1-5) and a wrapping tape (1-6) coated on the core wires and the ground wire (1-4), the two core wires and the ground wire (1-4) being bonded by a non-anaerobic UV adhesive (1-3).

2. The structurally stable high-speed parallel transmission line according to claim 1, characterized in that: The conductor (1-1) is one of solid copper, bare stranded copper, tinned copper, silver-plated copper and alloy copper.

3. The structurally stable high-speed parallel transmission line according to claim 1, characterized in that: The material of the insulating layer (1-2) is one of polyethylene, polypropylene, polyvinyl chloride and fluoroplastic.

4. The structurally stable high-speed parallel transmission line according to claim 1, characterized in that: The second shielding layer (1-5) is aluminum foil and aluminum-plastic composite tape.

5. The structurally stable high-speed parallel transmission line according to claim 1, characterized in that: The ground wire (1-4) is arranged between the two core wires.

6. The structurally stable high-speed parallel transmission line according to claim 1, characterized in that: The ground wires (1-4) are arranged on both sides of the two core wires.

7. The structurally stable high-speed parallel transmission line according to claim 1, characterized in that: The wrapping tape (1-6) is composed of one or both of a PET tape and a foamed PP tape.

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