10-gigabit Ethernet cable with flexible flat structure

Abstract

The utility model discloses a 10-gigabit Ethernet cable with a flexible flat structure, and aims to overcome the defect that the mechanical performance of the conventional FFC in a new energy automobile is difficult to meet the requirement. The cable comprises a plurality of conductor wire harnesses, an insulating layer, a first shielding layer, a second shielding layer and a sheath layer from inside to outside, the conductor wire harnesses are arranged in parallel, and the conductor wire harnesses are formed by twisting a plurality of lead wires. And the conductor wire harness formed by twisting improves the quality of a riveting connection mode and improves the drawing force performance.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting wires, and more specifically, to a 10 Gigabit Ethernet cable with a flexible flat structure. Background Art

[0002] Compared with traditional vehicles, new energy vehicles emphasize intelligence more, and reliable high-speed wiring harnesses are needed to transmit data signals between components. In the current environment, 10G Ethernet cables are sufficient to meet communication needs.

[0003] Most existing Ethernet cables are round, and the cross-section of the wiring harness is large, making it difficult to use them in the space-scarce environment of new energy vehicles.

[0004] Therefore, the related technology adopts FFC flexible flat cable, which can significantly reduce the height space occupied and is conducive to deployment in new energy vehicles. However, the conventional use of existing FFC is in scenarios such as notebooks that do not need to withstand high-frequency vibration and high pulling force requirements, and it is difficult to directly apply it to automobiles.

[0005] In summary, the present application aims to provide a 10 Gigabit Ethernet cable with a flexible flat structure, which has good strength performance in a high vibration environment and meets high pull-out force tests. Summary of the invention

[0006] The utility model overcomes the deficiency that the mechanical properties of the existing FFC are difficult to meet the requirements in new energy vehicles, and provides a 10 Gigabit Ethernet cable with a flexible flat structure, which has good anti-fatigue performance in a high vibration environment and meets the high pull-out force test.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A 10 Gigabit Ethernet cable with a flexible flat structure comprises, from inside to outside, a plurality of conductor harnesses, an insulating layer, a first shielding layer, a second shielding layer and a sheath layer, wherein the conductor harnesses are arranged in parallel and are formed by twisting a plurality of conducting wires.

[0009] The conductor harness is arranged in parallel, so that the entire harness is flat. The insulating layer provides insulation for the conductor harness, so that the conductor harness is insulated from the first shielding layer. The first shielding layer and the second shielding layer provide a shielding function to prevent external electromagnetic waves from causing interference and noise to the conductor harness.

[0010] In order to cope with more severe environments, conductor harnesses are produced by twisting wires. Increasing the twisted (wrap) structure conductor structure increases the quality of the riveting connection method and meets the needs of pulling force. Multiple twisted (wrap) structure conductors are more flexible and have stronger fatigue resistance. They have better fatigue resistance in high-frequency vibration environments and meet the application needs of new energy vehicles.

[0011] Preferably, the first shielding layer and the second shielding layer both have an insulating surface and a conductive surface, and the conductive layers of the first shielding layer and the second insulating layer are arranged opposite to each other. The first shielding layer and the second shielding layer cannot be conductive, so that two shielding layers are formed to improve the shielding effect. In addition, the second shielding layer can also be used as a grounding wire to achieve grounding of the wiring harness, further shielding the interference of external electromagnetic waves.

[0012] Preferably, the first shielding layer comprises two shielding sheets, the conductor bundle and the insulating layer form a flat insulator, and the two shielding sheets are respectively attached to the two largest surfaces of the insulator. The shielding sheets are fixed to the insulator in an attached manner.

[0013] Preferably, the width of the shielding sheet is greater than the width of the insulating layer, and the two end edges of the shielding sheet in the width direction are opposite. Since the insulator is a sheet with a very small thickness, it is difficult to fit the side of the insulator in a conventional manner. The structure achieves the shielding sheet covering the two sides of the insulator to achieve a shielding effect.

[0014] Preferably, the second shielding layer is wrapped around the outer surface of the first shielding layer and the left and right ends at least partially overlap.

[0015] Preferably, the material of the insulating layer includes polypropylene and at least one of polyurethane or silicone rubber, and the insulating material is formed with a positioning groove for positioning the conductor harness. In addition to the insulation function, the structure itself has a certain degree of flexibility and elasticity, can absorb the impact caused by the vibration environment, and improve the life of the conductor harness.

[0016] Preferably, glue is provided between the insulating layer and the first shielding layer and between the first shielding layer and the second shielding layer, so that connection is achieved in the form of pasting.

[0017] Preferably, the material of the sheath layer is FEP, and both ends of the sheath are provided with notches for exposing the second shielding layer. FEP material has strong wear resistance and can be made very thin.

[0018] Preferably, the surface of the sheath layer has adhesive for positioning the cable. The cable is a 10 Gigabit Ethernet cable with a flexible flat structure.

[0019] Preferably, the conductor bundles are arranged in equal amounts in the insulating blocks, the insulating blocks are formed by filling with insulating layer material, the two insulating blocks are arranged side by side so that the conductor bundles in the two insulating blocks are arranged in parallel, and the first shielding layer wraps around the two insulating blocks in an S-shape and covers each side of the two insulating blocks.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) The conductor bundle formed by twisting increases the quality of the riveting connection method and improves the pull-out force performance;

[0022] (2) In addition to the shielding effect, the second shielding layer is also connected to the grounding terminal of the connector to achieve the grounding function, thereby improving the high-speed transmission capability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the cable of the utility model;

[0024] Figure 2 is a schematic diagram of an insulator and a first shielding layer under an embodiment;

[0025] Figure 3 A schematic diagram of the connection between the insulator and the first shielding layer in another embodiment

[0026] In the figure:

[0027] Conductor harness 1, insulating layer 2, first shielding layer 3, second shielding layer 4, sheath layer 5, conducting wire 6, insulating surface 7, conducting surface 8, shielding sheet 9, insulating block 10. DETAILED DESCRIPTION

[0028] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0032] Example:

[0033] A 10 Gigabit Ethernet cable with a flexible flat structure, Figure 1, from the inside to the outside, it includes a plurality of conductor harnesses 1, an insulating layer 2, a first shielding layer 3, a second shielding layer 4 and a sheath layer 5, wherein the conductor harnesses 1 are arranged in parallel, and the conductor harnesses 1 are formed by twisting a plurality of conductor wires 6. The parallel arrangement of the conductor harnesses makes the flexibility of the entire high-speed flexible flat cable in a radial direction (normal phase of the largest surface) significantly higher than in other directions. With the surface parallelism of the largest surface, it can fit on the rigid structure in the new energy vehicle, thereby effectively utilizing the space. This is also the reason why such harnesses can be used in narrow space scenarios such as notebooks.

[0034] Unlike laptops, the flexible flat 10 Gigabit Ethernet cable described in this application is used in automobiles and needs to withstand higher frequency vibrations, which puts forward new requirements for the use of flat cables. In addition to being able to carry high-speed communication signals, such flat cables also need to have higher fatigue resistance and tensile strength.

[0035] For high-frequency signals, the present application provides an insulating layer 2 to insulate the conductor harness 1, so that the conductor harness 1 is insulated from the first shielding layer 3. The first shielding layer 3 and the second shielding layer 4 provide a shielding function to prevent external electromagnetic waves from causing interference and noise to the conductor harness 1.

[0036] In terms of mechanical properties, the present application produces the conductor harness 1 by twisting the wires 6. Adding a twisted (wound) structure conductor structure increases the quality of the riveting connection method and meets the need for pulling force. The flexibility and fatigue resistance of multiple twisted (wound) structure conductors are also stronger, and they have better fatigue resistance in a high-frequency vibration environment, meeting the application needs of new energy vehicles.

[0037] The material of the insulating layer 2 includes polypropylene and at least one of polyurethane or silicone rubber. The insulating material is formed with positioning grooves for positioning the conductor harness 1. The spacing between adjacent positioning grooves is the same, which makes the spacing between each conductor harness the same. In addition to the insulation effect, the structure itself has a certain flexibility and elasticity, which can absorb the impact caused by the vibration environment and improve the life of the conductor harness 1. The connection between the insulating layer 2 and the conductor harness 1 is formed by bonding. In some embodiments, some low dielectric constant insulating materials can also be selected and formed in the form of extrusion or wrapping.

[0038] The first shielding layer 3 includes two shielding sheets 9. The conductor harness 1 and the insulating layer 2 form a flat insulator. The two shielding sheets 9 are respectively attached to the two largest surfaces of the insulator. The shielding sheets 9 are fixed to the insulator in an attached manner. The direct-attached metal shielding tape has the effect of high signal transmission frequency and good signal quality. Figure 2In some embodiments, the width of the shielding sheet 9 is greater than the width of the insulating layer 2, and the two end edges of the shielding sheet 9 in the width direction are opposite. Since the insulator is a sheet with a very small thickness, it is difficult to achieve the side of the insulator by conventional methods. The structure realizes the shielding sheet 9 covering the two sides of the insulator to achieve a shielding effect.

[0039] Ginseng Figure 3 In another possible embodiment, the conductor bundles 1 are arranged in equal amounts in the insulating block 10, the insulating block is formed by filling the material of the insulating layer 2, the two insulating blocks 10 are arranged side by side so that the conductor bundles 1 in the two insulating blocks 10 are arranged in parallel, and the first shielding layer 3 surrounds the two insulating blocks 10 in an S-shaped form and covers each side of the two insulating blocks 10. Among them, the spacing between each conductor bundle 1 in the insulating block 10 is the same. In some embodiments, when the two insulating blocks 10 are arranged side by side, the adjacent conductor bundles 1 are equally spaced.

[0040] The second shielding layer 4 is wrapped around the outer surface of the first shielding layer 3 and the left and right ends are at least partially overlapped. The use of a winding metal shielding tape has good EMI effect and good signal quality. In some other embodiments, the outer shielding layer can also be in the form of a metal wire braided mesh to achieve the EMI effect, but this method has a slightly worse shielding effect on high-frequency electromagnetic waves. There is glue between the insulating layer 2 and the first shielding layer 3 and between the first shielding layer 3 and the second shielding layer 4, and the connection is achieved in the form of adhesion. In some embodiments, the glue is high temperature resistant glue.

[0041] The material of the sheath layer 5 is FEP (perfluoroethylene propylene copolymer). The thickness of the sheath layer 5 is 0.1~0.5mm. FEP material has strong wear resistance and can be made very thin. Nylon, TPEE (thermoplastic polyester elastomer), PEEK (polyether ether ketone), PVC (polyvinyl chloride), TPE (thermoplastic elastomer), XLPE (cross-linked polyethylene), PP (polypropylene), ETFE (ethylene-tetrafluoroethylene copolymer) and other protective materials can also be used as sheaths. However, the nylon process is difficult, the TPEE process is difficult, the PEEK process is difficult and the equipment requirements are high. PVC and TPE cannot be made so thin. The FEP sheath is wear-resistant and shock-resistant, and has good high and low temperature resistance. Notches are provided at both ends of the sheath for exposing the second shielding layer, which is convenient for the connection of the grounding terminal 13. The surface of the sheath layer has a viscose for positioning the cable, and the viscose is a double-sided adhesive.

[0042] The first shielding layer 3 and the second shielding layer 4 both have an insulating surface 7 and a conductive surface 8, and the conductive layers of the first shielding layer 3 and the second insulating layer 2 are arranged opposite to each other. The first shielding layer 3 and the second shielding layer 4 cannot be conductive, so that two shielding layers are formed to improve the shielding effect. In addition, the second shielding layer 4 can also be used as a grounding wire to achieve grounding of the wiring harness, further shielding the interference of external electromagnetic waves.

[0043] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A 10 Gigabit Ethernet cable with a flexible flat structure, characterized in that: From the inside to the outside, it includes a plurality of conductor bundles, an insulating layer, a first shielding layer, a second shielding layer and a sheath layer, wherein the conductor bundles are arranged in parallel and are formed by twisting a plurality of wires.

2. The flexible flat 10 Gigabit Ethernet cable according to claim 1, characterized in that: The first shielding layer and the second shielding layer both have an insulating surface and a conductive surface, and the conductive layers of the first shielding layer and the second insulating layer are arranged opposite to each other.

3. The flexible flat 10 Gigabit Ethernet cable according to claim 1, characterized in that: The first shielding layer comprises two shielding sheets. The conductor wire bundle and the insulating layer form a flat insulating body. The two shielding sheets are respectively attached to the two largest surfaces of the insulating body.

4. The flexible flat 10 Gigabit Ethernet cable according to claim 3, characterized in that: The width of the shielding sheet is greater than the width of the insulating layer, and the two end lines of the shielding sheet in the width direction are opposite to each other.

5. The 10 Gigabit Ethernet cable with a flexible flat structure according to claim 1, characterized in that: The second shielding layer is wrapped around the outer surface of the first shielding layer, and the left and right ends of the second shielding layer at least partially overlap.

6. The 10 Gigabit Ethernet cable with a flexible flat structure according to claim 1, characterized in that: The insulating layer is formed with positioning grooves for positioning the conductor harness.

7. The 10 Gigabit Ethernet cable with a flexible flat structure according to claim 4, characterized in that: There is glue between the insulating layer and the first shielding layer and between the first shielding layer and the second shielding layer.

8. The flexible flat 10 Gigabit Ethernet cable according to claim 1, characterized in that: The material of the sheath layer is FEP, and both ends of the sheath are provided with notches for exposing the second shielding layer.

9. The flexible flat 10 Gigabit Ethernet cable according to claim 1, characterized in that: The surface of the sheath layer has adhesive for positioning the cable.

10. The flexible flat 10 Gigabit Ethernet cable according to claim 1, characterized in that: The conductor bundles are arranged in equal amounts in the insulating blocks, which are formed by filling the insulating layer material. The two insulating blocks are arranged side by side so that the conductor bundles in the two insulating blocks are arranged in parallel. The first shielding layer wraps around the two insulating blocks in an S-shape and covers each side of the two insulating blocks.

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