High-speed transmission cable

Abstract

The utility model discloses a high-speed transmission cable. The problems that a transmission cable is low in transmission speed and unstable in performance are solved. The cable comprises a shielding layer used for signal shielding; the outer side of the shielding layer is coated with the coating fixing layer; the signal transmission group is used for signal transmission; the signal transmission group comprises at least two conductors; the insulating layer is arranged in the shielding layer; the insulating layer is formed by one-time extrusion and wraps the conductor; the insulating layer is provided with a plurality of transmission holes which are arranged along the axial direction of the cable. And different transmission holes are arranged around the signal transmission group. The beneficial effects of the utility model are that the insulating layer is formed by one-step extrusion and wraps the different conductors, the cost is reduced, the transmission holes are arranged on the insulating layer, and the characteristic of optimal air conduction is utilized, so that the signal attenuation is reduced, and the transmission rate is improved.

Description

Technical Field

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

[0002] Currently, existing high-frequency cables or transmission harnesses used in servers consist of two insulated core wires. The insulation structure requires two processes: first, the core conductors are insulated with insulating material to form an insulating layer; then, an inner sheath is used to further insulate the insulated core conductors, forming an inner sheath. This creates air gaps of varying sizes between the inner sheath and the insulating layer, leading to unstable contact. Furthermore, after these later processes, the two core wires are prone to deformation under external forces, most notably asymmetry. These errors create time differences during signal transmission, resulting in packet loss, bit errors, and ultimately, a decrease in overall electrical performance and structural stability. Utility Model Content

[0003] To address the problems of slow transmission speed and unstable performance of existing transmission cables in the background art, this utility model provides a high-speed transmission cable.

[0004] The technical solution of this utility model is: a high-speed transmission cable, comprising:

[0005] Shielding layer, used for signal shielding;

[0006] A covering and fixing layer, wherein the covering and fixing layer covers the outside of the shielding layer;

[0007] A signal transmission group for signal transmission; the signal transmission group includes at least two conductors;

[0008] An insulating layer is disposed within the shielding layer; the insulating layer is extruded and formed in one step to wrap around the conductor; the insulating layer is provided with multiple transmission holes arranged along the cable axis; different transmission holes are arranged around the signal transmission group.

[0009] As a further improvement of this utility model, there are 12-20 transmission holes, which are circumferentially equidistantly arranged on the insulating layer and arranged in a ring around the signal transmission group in the radial cross section.

[0010] As a further improvement of this utility model, the different transmission holes on the left and right outer sides of the conductor in the radial section are arranged in an arc shape, and the different transmission holes on the upper and lower sides of the conductor in the radial section are arranged in a straight line.

[0011] As a further improvement of this utility model, there are 14-16 transmission holes, which are arranged in a circular or fan shape.

[0012] As a further improvement of this utility model, the insulating layer is integrally formed using a melt-processable fluoropolymer material.

[0013] As a further improvement of this utility model, the insulating layer is integrally formed using a copolymer of tetrafluoroethylene and hexafluoropropylene or a copolymer of tetrafluoroethylene-perfluoroalkoxy vinyl ether.

[0014] As a further improvement of this utility model, it also includes a drain line for grounding connection; the drain line is located outside the insulation layer and is limited by the insulation layer.

[0015] As a further improvement of this utility model, the outer surface of the insulating layer is provided with a positioning groove, and the drainage line is located in the positioning groove.

[0016] As a further improvement of this utility model, the outer surface of the insulating layer is recessed inward to form the positioning groove, the drainage line is disposed in the positioning groove, and the positioning groove is arc-shaped.

[0017] As a further improvement of this utility model, there are two drainage lines, which are located at both ends of the insulating layer. The insulating layer is flat. There are two conductors, which are symmetrically arranged and located inside the two drainage lines.

[0018] The beneficial effects of this invention are that the insulating layer is extruded and molded in one step to wrap around the conductor, reducing costs. Simultaneously, it effectively eliminates the air gap between the insulating layer and the inner sheath in existing technologies, allowing both conductors to be extruded simultaneously, improving wire diameter uniformity, reducing transmission delay differences, and thus making the overall product structure more stable. Furthermore, it simplifies the manufacturing process, improving overall production efficiency, and the elimination of air gaps enhances overall electrical performance. The transmission holes in the insulating layer utilize the optimal conduction properties of air to reduce signal attenuation and increase transmission speed. Attached Figure Description

[0019] Appendix Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] In the diagram, 1 is the shielding layer; 2 is the covering and fixing layer; 3 is the signal transmission group; 31 is the conductor; 4 is the insulating layer; 41 is the transmission hole; 42 is the positioning groove; and 5 is the drainage line. Detailed Implementation

[0021] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0022] Depend on Figure 1 As shown, a high-speed transmission cable includes:

[0023] Shielding layer 1 is used for signal shielding; there are 1-3 shielding layers, including but not limited to aluminum foil or copper foil, etc.

[0024] The covering and fixing layer 2 covers the outside of the shielding layer 1; the covering and fixing layer has 1-2 layers and can be made of heat-melting materials, including but not limited to heat-melting Mylar tape and heat-melting polypropylene tape.

[0025] Signal transmission group 3 is used for signal transmission; the signal transmission group 3 includes at least two conductors 31;

[0026] An insulating layer 4 is disposed within the shielding layer 1; the insulating layer 4 is extruded and formed in one step to wrap around the conductor 31; the insulating layer 4 has multiple transmission holes 41 arranged along the cable axis; different transmission holes 41 are arranged around the signal transmission group 3. The beneficial effects of this utility model are that the insulating layer is extruded and formed in one step to wrap around the conductor, which reduces costs and effectively eliminates the air gap (irregular and disordered air gap) between the insulating layer and the inner sheath in the prior art, allowing the two conductors to be extruded and formed simultaneously, improving wire diameter uniformity, reducing transmission delay difference, and thus making the overall structure of the product more stable. At the same time, it simplifies the production process, improves the overall production efficiency, and the elimination of air gaps can improve the overall electrical performance; the transmission holes on the insulating layer utilize the optimal characteristics of air conduction to reduce signal attenuation and improve transmission rate. In fact, the insulating layer of this utility model combines the original insulating layer and the inner sheath, and uses a one-step extrusion technology to cover the two conductors to form an insulating layer.

[0027] There are 12-20 transmission holes 41, which are circumferentially equidistantly arranged on the insulating layer 4 and arranged around the signal transmission group 3 in the radial cross-section. The use of hollow transmission holes eliminates the need for additional insulating or inner layers. By replacing the solid insulating and inner layers of existing technologies with a single insulating layer, the outer diameter of the wire is reduced. Furthermore, by utilizing the optimal conduction properties of air, signal attenuation is reduced, and the transmission rate is improved.

[0028] In the radial cross-section, the different transmission holes 41 on the left and right outer sides of the conductor 31 are arranged in an arc shape, while the different transmission holes 41 on the upper and lower sides of the conductor 31 are arranged in a straight line. Specifically, there are 14-16 transmission holes 41, which are arranged in a circular or fan shape. The circular or fan-shaped transmission holes can make reasonable use of the space on the insulation layer. This invention sets the transmission holes on the insulation layer, reducing the process of wrapping the conductor with the insulation layer, reducing the product volume, and at the same time, it can set as many hollow transmission holes as possible on the insulation layer. For the same wire and the same size of transmission holes, more transmission holes can be set. Based on the original, it utilizes the optimal characteristics of air conduction to improve the signal transmission rate. At the same time, the circular and fan-shaped arrangement provides better strength support, can reduce the outer diameter of the insulation layer, and can reliably support and protect the conductor, avoiding deformation.

[0029] The insulating layer 4 is integrally formed from a melt-processable fluoropolymer (FEP) material. Specifically, the insulating layer 4 is integrally formed from a copolymer of tetrafluoroethylene and hexafluoropropylene or a copolymer of tetrafluoroethylene and perfluoroalkoxy vinyl ether. The insulating layer of this invention uses a copolymer of tetrafluoroethylene and hexafluoropropylene and does not contain other polymers / additives. The resin is in transparent granular form and, compared to other materials, has higher melt flowability and excellent electrical properties. It is specifically developed for high-speed extrusion of thin-walled wires and applications requiring high electrical performance. Therefore, it can be integrally extruded and molded to encapsulate all conductors, avoiding the inevitable errors in wire diameter and aperture during production when two conductors are processed separately. These errors can cause time differences during signal transmission between the two wires, leading to data loss, bit errors, and other issues.

[0030] This utility model also includes a drain line 5 for grounding connection; the drain line 5 is located on the outside of the insulating layer 4 and is limited by the insulating layer 4. Specifically, the outer surface of the insulating layer 4 is provided with a positioning groove 42, and the drain line 5 is located in the positioning groove 42. More specifically, the outer surface of the insulating layer 4 is recessed inward to form the positioning groove 42, and the drain line 5 is located in the positioning groove 42, which is arc-shaped. By using a non-circular hole-cutting process, an arc-shaped positioning groove is cut on each side of the insulating layer to position the drain line, preventing the drain line from moving up and down and deforming. This also reduces the width of the wire and the product volume, which is the preferred method of this utility model. Of course, in the actual production process, the drain line may not be provided, or only one drain line may be provided, which is located in the middle of the conductor.

[0031] The drain lines 5 are two in number, located at both ends of the insulating layer 4, which is flat. The conductors 31 are two in number, symmetrically arranged inside the drain lines 5. With the conductors and drain lines on the same cross-section, the product is flat overall, resulting in a small size and reduced cost. The drain lines, located outside the conductors, provide protection and support, preventing conductor deformation and extending the product's lifespan.

[0032] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modification that utilizes the inventive concept will be included within the scope of protection of this utility model patent.

Claims

1. A high-speed transmission cable, characterized in that: include: Shielding layer (1) is used for signal shielding; A covering and fixing layer (2) is applied to the outside of the shielding layer (1); A signal transmission group (3) is used for signal transmission; the signal transmission group (3) includes at least two conductors (31). An insulating layer (4) is disposed inside the shielding layer (1); the insulating layer (4) is extruded and molded in one step to wrap around the conductor (31); the insulating layer (4) is provided with a plurality of transmission holes (41) arranged along the cable axis; different transmission holes (41) are arranged around the signal transmission group (3).

2. The high-speed transmission cable according to claim 1, characterized in that... There are 12-20 transmission holes (41). The transmission holes (41) are circumferentially equidistantly arranged on the insulating layer (4) and arranged in a radial cross section around the signal transmission group (3).

3. The high-speed transmission cable according to claim 1, characterized in that... On the radial cross section, the different transmission holes (41) on the left and right outer sides of the conductor (31) are arranged in an arc shape, and on the upper and lower sides of the conductor (31) on the radial cross section, the different transmission holes (41) are arranged in a straight line.

4. A high-speed transmission cable according to claim 2 or 3, characterized in that... There are 14-16 transmission holes (41), and the transmission holes (41) are arranged in a circular or fan shape.

5. A high-speed transmission cable according to claim 1, characterized in that... The insulating layer (4) is integrally formed using a melt-processable fluoropolymer material.

6. A high-speed transmission cable according to claim 1, characterized in that... It also includes a drain line (5) for grounding connection; the drain line (5) is located outside the insulation layer (4) and is limited by the insulation layer (4).

7. A high-speed transmission cable according to claim 6, characterized in that... The outer surface of the insulating layer (4) is provided with a positioning groove (42), and the drainage line (5) is located in the positioning groove (42).

8. A high-speed transmission cable according to claim 7, characterized in that... The outer surface of the insulating layer (4) is recessed inward to form the positioning groove (42), and the drainage line (5) is disposed in the positioning groove (42). The positioning groove (42) is arc-shaped.

9. A high-speed transmission cable according to claim 6, characterized in that... There are two drain lines (5), which are located at both ends of the insulating layer (4). The insulating layer (4) is flat. There are two conductors (31), which are symmetrically arranged and located inside the two drain lines (5).

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