Reinforced signal transmission cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a reinforced signal transmission cable, which comprises a core body formed by twisting a plurality of thin conductors, and further comprises a reinforcing rib twisted between two adjacent thin conductors at the periphery of the core body, and the reinforcing rib comprises an aramid fiber belt and a fluoroplastic belt; it can be understood that the reinforcing ribs are formed by spirally winding the aramid fiber tapes and the fluoroplastic tapes, and are tightly distributed in gaps between the adjacent conductors in a spiral embedding manner, so that the cable is endowed with excellent tensile and anti-torsion characteristics while the structure is compact; the shielding sleeve with a three-layer composite shielding structure is adopted, so that the overall mechanical strength is synchronously improved on the basis of enhancing the electromagnetic shielding effectiveness; and the outer sheath is structurally reinforced by adding short fibers in the middle layer, and is matched with grooves designed in the surface of the outer layer to form a three-dimensional heat dissipation channel, so that the heat dissipation effect is remarkably improved while the mechanical stability is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, and in particular relates to a reinforced signal transmission cable. Background Technology

[0002] As a core component of modern communication and electronic systems, signal transmission cables have undergone a revolutionary evolution from traditional metal conductors to optical fibers. Early cables primarily relied on copper conductors to transmit electrical signals, but this was limited by signal attenuation, electromagnetic interference, and insufficient bandwidth. In the mid-20th century, the emergence of coaxial cables and twisted-pair cables reduced interference through shielding layers and twisted structures, significantly improving the quality of analog signal transmission. With the advent of the digital age, optical fiber technology has completely transformed the industry. Utilizing the principle of total internal reflection of light pulses in glass or plastic fibers, it has achieved ultra-high-speed, high-capacity, and low-loss data transmission, becoming the core carrier of long-distance communication backbone networks.

[0003] Firstly, traditional signal cables suffer from severe high-frequency signal attenuation, insufficient electromagnetic interference resistance, and low mechanical strength. Secondly, existing technologies using single-layer metal shielding or simple filling structures cannot simultaneously meet the requirements of high-intensity transmission and complex environmental applications.

[0004] To address the aforementioned problems, this application proposes a reinforced signal transmission cable. Utility Model Content

[0005] The purpose of this invention is to provide a reinforced signal transmission cable that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a reinforced signal transmission cable, comprising a core, wherein the core is formed by stranding multiple thin conductors, and further comprising:

[0008] The reinforcing rib is twisted between two adjacent thin conductors around the periphery of the core, and the reinforcing rib includes aramid fiber tape and fluoroplastic tape.

[0009] An inner insulation layer is extruded and wrapped around the core and the outside of the reinforcing ribs;

[0010] A shielding sleeve, which is formed on the outside of the inner insulating layer and has three layers;

[0011] An outer insulating layer, which is extruded and covered on the outside of the shielding sleeve;

[0012] The outer sheath is extruded and wrapped around the outside of the outer insulation layer, and the outer sheath is three layers formed by co-extrusion.

[0013] Furthermore, the aramid fiber tape and the fluoroplastic tape are connected by a spiral twist.

[0014] Furthermore, the three layers in the shielding sleeve include an innermost braided layer, a middle thin film wrapping layer, and an outer metal wrapping layer. The braided layer is in close contact with the outside of the inner insulation layer, and the outside of the metal wrapping layer is in close contact with the inside of the outer insulation layer.

[0015] Furthermore, the three layers in the outer sheath include an inner layer with a low-smoke, halogen-free material, a middle layer with added short fibers, and an outer layer formed outside the middle layer.

[0016] Furthermore, the outer layer has axially formed grooves formed by extrusion, and the grooves are evenly distributed around the circumference.

[0017] Furthermore, the groove cross-section is a trapezoid with one side open, and the long side of the trapezoid faces outward.

[0018] This utility model has the following beneficial effects:

[0019] This invention uses reinforcing ribs formed by spirally molding aramid fiber tape and fluoroplastic tape to be embedded between adjacent single thin conductors in a spiral manner, resulting in a more compact fit, and the reinforcing ribs have both tensile and torsional resistance functions.

[0020] This utility model uses a three-layer shielding structure with different shielding layers, which increases the shielding effect and strengthens the cable.

[0021] This invention strengthens the structure by adding short fibers to the middle layer of the outer sheath, while the grooves on the outer surface of the outer layer enhance heat dissipation, ensuring the cable is stable and durable.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the shielding sleeve.

[0026] Figure 3 This is a schematic diagram of the outer sheath structure;

[0027] Figure 4 This is a schematic diagram of the reinforcing ribs;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the diagram: 1. Core; 2. Reinforcing rib; 21. Aramid fiber tape; 22. Fluoroplastic tape; 3. Inner insulation layer; 4. Shielding sleeve; 41. Braided layer; 42. Thin film wrapping layer; 43. Metal wrapping layer; 5. Outer insulation layer; 6. Outer sheath; 61. Inner layer; 62. Middle layer; 63. Outer layer; 631. Groove. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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 of this utility model.

[0032] Please see Figures 1-4 As shown, this utility model is a reinforced signal transmission cable, including a core 1, which is formed by stranding multiple thin conductors. It also includes reinforcing ribs 2, which are stranded between two adjacent thin conductors around the periphery of the core 1. The reinforcing ribs 2 include aramid fiber tape 21 and fluoroplastic tape 22, which are connected by spiral stranding. The aramid fiber tape 21 and fluoroplastic tape 22 are synchronously stranded using a spiral stranding machine. To improve adhesion, local heating can be used to soften and bond them, or a high-temperature resistant epoxy resin adhesive can be used. After stranding, the cable is air-cooled / water-cooled for shaping. Finally, it needs to pass tensile testing, temperature resistance testing, and chemical resistance assessment to ensure quality. An inner insulation layer 3 is extruded and wrapped around the core 1 and the reinforcing ribs 2; an outer insulation layer 5 is extruded and wrapped around the shielding sleeve 4.

[0033] The shielding sleeve 4 is formed outside the inner insulation layer 3 and has three layers. The three layers of the shielding sleeve 4 include the innermost braided layer 41, the middle thin film wrapping layer 42, and the outer metal wrapping layer 43. The braided layer 41 is in close contact with the outside of the inner insulation layer 3, and the outside of the metal wrapping layer 43 is in close contact with the inside of the outer insulation layer 5. The braided layer 41 is woven from aluminum-magnesium alloy wire, the thin film wrapping layer 42 is made of polyimide material and coated with conductive graphene, and the metal wrapping layer 43 is made of copper and tin-plated on the surface.

[0034] The outer sheath 6 is extruded and covered on the outside of the outer insulation layer 5. The outer sheath 6 is a three-layer material formed by co-extrusion. The three layers of the outer sheath 6 include an inner layer 61 with low smoke and halogen-free material, a middle layer 62 with added short fibers, and an outer layer 63 formed on the outside of the middle layer 62. The inner layer 61 and the middle layer 62 are both made of cross-linked polyethylene as the matrix and have added low smoke and halogen-free material and short fibers. The outer layer 63 is made entirely of cross-linked polyethylene. Cross-linked polyethylene has good high temperature resistance and anti-aging properties.

[0035] Among them, the outer layer 63 has an extruded groove 631 formed along the axial direction on the outside, and the groove 631 is evenly distributed around the circumference. The cross-section of the groove 631 is a trapezoid with one side open and the long side of the trapezoid facing outward. The trapezoid can increase the contact area between the cable periphery and the air, thereby enhancing heat dissipation. The trapezoidal structure can also play a buffering role when the cable is under pressure, and at the same time, it can ensure toughness when bending.

[0036] Understandably, the reinforcing ribs are formed by spirally winding aramid fiber tape and fluoroplastic tape, and are tightly distributed in the gaps between adjacent conductors through a spiral interlocking method, achieving a compact structure while giving the cable excellent tensile and torsional resistance. The shielding sleeve with a three-layer composite shielding structure enhances the electromagnetic shielding effectiveness and simultaneously improves the overall mechanical strength. The outer sheath is structurally reinforced by adding short fibers to the middle layer, and forms a three-dimensional heat dissipation channel with the grooves designed on the outer surface, which significantly improves the heat dissipation effect while ensuring mechanical stability.

[0037] A specific application of this embodiment is as follows: the aramid fiber tape 21 and the fluoroplastic tape 22 are spirally twisted to form a reinforcing rib 2. The core 1 is formed by twisting multiple thin conductors together. Then, the reinforcing rib 2 is arranged along the spiral twisting path between two adjacent thin conductors around the core 1. After the core 1 and the reinforcing rib 2 are formed, the inner insulation layer 3 is extruded and wrapped around it. The braided layer 41 is woven and formed on the outer surface of the inner insulation layer 3. Then, a thin film wrapping layer 42 is wrapped around the outer surface of the braided layer 41. A metal wrapping layer 43 is wrapped around the outer surface of the thin film wrapping layer 42. The outer insulation layer 5 is extruded and wrapped around the outside of the metal wrapping layer 43. The outer sheath 6 is a three-layer co-extrusion, wherein the inner layer 61 is a low-smoke halogen-free flame retardant, the middle layer 62 contains Kevlar short fibers, and the outer layer 63 has grooves 631 formed on its outside.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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 present 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.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A reinforced signal transmission cable comprising a core (1), characterized in that, The core (1) is formed by twisting together multiple thin conductors, and also includes: Reinforcing rib (2), the reinforcing rib (2) is twisted between two adjacent thin conductors on the periphery of the core (1), the reinforcing rib (2) includes aramid fiber tape (21) and fluoroplastic tape (22). Inner insulation layer (3), which is extruded and covered outside the core (1) and reinforcing rib (2); The shielding sleeve (4) is formed on the outside of the inner insulating layer (3) and has three layers; An outer insulating layer (5) is extruded and covered on the outside of the shielding sleeve (4); The outer sheath (6) is extruded and covered on the outside of the outer insulation layer (5), and the outer sheath (6) is a three-layer structure formed by co-extrusion.

2. A reinforced signal transmission cable according to claim 1, characterized in that: The aramid fiber tape (21) and the fluoroplastic tape (22) are connected by a spiral twist.

3. A reinforced signal transmission cable according to claim 1, characterized in that: The shielding sleeve (4) has three layers, including the innermost braided layer (41), the middle thin film wrapping layer (42), and the outer metal wrapping layer (43). The braided layer (41) is in close contact with the outside of the inner insulation layer (3), and the outside of the metal wrapping layer (43) is in close contact with the inside of the outer insulation layer (5).

4. A reinforced signal transmission cable according to claim 1, characterized in that: The outer sheath (6) comprises an inner layer (61) with a low-smoke halogen-free material, a middle layer (62) with added short fibers, and an outer layer (63) formed outside the middle layer (62).

5. A reinforced signal transmission cable according to claim 4, characterized in that: The outer layer (63) has an axially formed groove (631) formed by extrusion, and the groove (631) is evenly distributed around the circumference.

6. A reinforced signal transmission cable according to claim 5, characterized in that: The groove (631) has a trapezoidal cross-section with one side open and the long side of the trapezoid facing outward.

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