A highly flexible, bendable shielded cable

Abstract

The utility model relates to cable technical field especially relates to a high soft folding shielded cable, including shielded cable body, the shielded cable body includes the conductor layer of setting in the shielded cable body center, the outside of conductor layer is provided with internal insulation layer, the outside of internal insulation layer is sequentially provided with internal shielding layer and sheath layer, the sheath layer is inside sheath structure and outside sheath structure respectively, the inside sheath structure is covered in the shielded layer outer surface, the utility model provides through setting multilayer structure, such as containing tensile core wire and special wire core conductor layer, specific insulation layer, mixed filling layer, double -deck shielding layer and containing flame -retardant fibre sheath layer etc.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a highly flexible and fold-resistant shielded cable. Background Technology

[0002] In modern industry and communications, cables serve as crucial carriers for signal transmission and power supply, and their performance directly impacts system stability and reliability. With rapid technological advancements, increasingly complex environments and high-performance requirements pose more stringent challenges to cables, revealing shortcomings in traditional cables regarding flexibility, flexural strength, and shielding effectiveness.

[0003] In terms of flexibility and flexural strength, many traditional cables are prone to conductor breakage and insulation damage under frequent bending and folding conditions, leading to signal transmission interruptions or abnormal power supply, severely impacting equipment operation. For example, in applications requiring frequent movement, such as robotic arms and mobile devices, traditional cables struggle to meet long-term usage requirements. Regarding shielding effectiveness, electromagnetic interference is increasingly severe with the widespread use of electronic devices. Traditional cables often have relatively simple shielding structures, failing to effectively block external electromagnetic interference or prevent internal signal leakage, easily causing signal distortion and increased bit error rates, affecting communication quality and precise equipment control. Furthermore, the tensile strength and flame retardancy of cables are also crucial factors affecting their reliability. Traditional cables perform poorly in terms of tensile strength, easily damaged under tension; insufficient flame retardancy can pose greater dangers in emergencies such as fires. Utility Model Content

[0004] To address some of the problems existing in the prior art, this utility model provides a multi-layer structure, such as a conductor layer containing tensile core wires and special core wires, a specific insulation layer, a mixed filling layer, a double shielding layer, and a sheath layer containing flame-retardant fibers, to adapt to complex environments and ensure stable signal and power transmission.

[0005] To achieve the above objectives, this utility model provides a highly flexible and fold-resistant shielded cable, comprising a shielded cable body. The shielded cable body includes a conductor layer disposed at the center of the shielded cable body. An inner insulation layer is disposed outside the conductor layer. An inner shielding layer and a sheath layer are disposed sequentially outside the inner insulation layer. The sheath layer consists of an inner sheath structure and an outer sheath structure. The inner sheath structure covers the outer surface of the shielding layer.

[0006] As a further improvement of this utility model, in order to reduce the deformation or damage of the conductor layer caused by stretching and improve the durability and service life of the cable, a tensile core wire is provided inside the conductor layer, and the tensile core wire is located at the center of the conductor layer.

[0007] As a further improvement of this utility model, in order to help improve the stability and uniformity of current transmission, reduce the resistance of copper wires, reduce power loss, and improve the transmission efficiency of the cable, the conductor layer is further provided with several sets of wire cores. The wire cores are composed of multiple metal copper wires concentrically twisted together. The surface of the copper wires is coated with a layer of nano-scale graphene coating, and the outside of the wire cores is provided with a separating insulation layer.

[0008] As a further improvement of this utility model, in order to fill the gap between the insulation layer and the shielding layer, make the cable structure more compact, and improve the cable's bending and vibration resistance, a filling layer is also provided between the inner insulation layer and the inner shielding layer. The filling layer is composed of a mixture of polypropylene fiber filaments and glass fiber filaments, and the diameter of the filling material of the filling layer is 0.02mm - 0.05mm.

[0009] As a further improvement of this utility model, in order to effectively prevent current leakage, ensure the electrical safety of the cable, and ensure that the cable has a certain degree of flexibility and bendability, the inner insulation layer tightly covers the conductor layer and is composed of cross-linked polyethylene insulation material, and the thickness of the inner insulation layer is between 0.2mm and 1.0mm.

[0010] As a further improvement of this utility model, in order to more effectively shield external electromagnetic interference, improve the anti-interference capability of the cable, and ensure the stability and accuracy of signal transmission, the internal shielding layer is provided with a first shielding layer and a second shielding layer from the inside out. The first shielding layer is made of absorbing paper material, and the second shielding layer is composed of tin-plated copper wire. The diameter of the tin-plated copper wire in the second shielding layer is 0.1mm-0.2mm, and the braiding angle is 30°-60°.

[0011] As a further improvement of this utility model, in order to effectively protect the internal structure of the cable from damage by the external environment and improve the durability and service life of the cable, the outer sheath structure and the inner sheath structure are made of polyurethane material. The outer sheath structure is formed by extrusion process and its thickness is 0.3-0.6mm. The surface of the sheath layer is provided with anti-slip texture, and the interior of the outer sheath structure is filled with flame-retardant fiber.

[0012] In operation, the conductor layer serves as the core for current transmission, and the internal tensile core wire enhances the overall tensile strength, ensuring it is not easily broken in complex environments. Multiple sets of wire cores, each composed of multiple copper wires with a nano-scale graphene coating, are concentrically twisted together. This not only improves conductivity, but the nano-scale graphene coating also enhances oxidation and corrosion resistance. The insulating layer effectively isolates the wire cores, preventing short circuits.

[0013] The inner insulation layer, tightly encasing the conductor layer, is made of cross-linked polyethylene insulation material with a thickness between 0.2mm and 1.0mm, providing reliable insulation for the conductor layer and ensuring safe current transmission. The filler layer between the insulation layer and the shielding layer is composed of a mixture of polypropylene fibers and glass fibers, serving as a buffer and support, and enhancing the cable's flexibility.

[0014] The internal shielding layer features a double-layer design. The first shielding layer uses absorbing paper material to effectively absorb electromagnetic waves. The second shielding layer is woven from tin-plated copper wire with a diameter of 0.1mm-0.2mm and a weaving angle of 30°-60°, which can effectively shield external electromagnetic interference.

[0015] The inner sheath structure tightly covers the shielding layer, while the outer sheath structure is made of polyurethane material, formed by extrusion process, with a thickness of 0.3-0.6mm. The surface anti-slip texture facilitates installation and operation, and the internal flame-retardant fiber filling enhances the cable's fire resistance, providing all-round protection for the internal structure and ensuring stable operation of the cable under various complex working conditions.

[0016] The beneficial effects of this utility model are as follows: Excellent electrical performance: Multiple copper wires coated with nanoscale graphene are concentrically twisted in the conductor layer. The nanoscale graphene coating enhances the conductivity and oxidation resistance of the copper wires, reduces resistance, and reduces energy loss during transmission, making power or signal transmission more efficient and stable, and ensuring the normal operation of the equipment.

[0017] Excellent mechanical properties: The tensile core wire at the center of the conductor layer significantly improves the overall tensile strength of the cable, enabling it to withstand greater tensile forces without easily breaking. The reasonable combination of polypropylene fibers and glass fibers in the filler layer, along with the rational layered structure, gives the cable good flexibility and bending resistance, allowing it to adapt to complex and changing installation environments, reducing damage caused by frequent bending and pulling, and extending the cable's service life.

[0018] Superior shielding performance: The internal shielding layer adopts a double-layer design. The first shielding layer is made of absorbing paper material that can effectively absorb electromagnetic waves. The second shielding layer is woven from tin-plated copper wire of a specific specification, which can effectively shield external electromagnetic interference, prevent internal signals from leaking out, and ensure the accuracy and confidentiality of signal transmission. It is especially suitable for places with harsh electromagnetic environment requirements.

[0019] Reliable safety protection: The internal insulation layer, made of cross-linked polyethylene insulation material, provides reliable insulation. The outer sheath structure is made of polyurethane material and filled with flame-retardant fibers, which not only has anti-slip function and facilitates construction, but also effectively prevents the spread of fire in emergencies such as fires, improving safety during use. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a structural diagram of the present invention.

[0021] Among them, 1 is the conductor layer, 2 is the inner insulation layer, 3 is the inner shielding layer, 4 is the sheath layer, 5 is the inner sheath structure, 6 is the outer sheath structure, 7 is the tensile core wire, 8 is the wire core, 9 is the copper conductor, 10 is the separating insulation layer, 11 is the filling layer, 12 is the first shielding layer, and 13 is the second shielding layer. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions in this application, the following description is provided in conjunction with the appendix. Figure 1 The present invention will be further described below. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0023] like Figure 1 The diagram shows a highly flexible and fold-resistant shielded cable, which includes a shielded cable body. The shielded cable body includes a conductor layer 1 disposed at the center of the shielded cable body. An inner insulation layer 2 is disposed outside the conductor layer 1. An inner shielding layer 3 and a sheath layer 4 are disposed sequentially outside the inner insulation layer 2. The sheath layer 4 consists of an inner sheath structure 5 and an outer sheath structure 6. The inner sheath structure 5 covers the outer surface of the shielding layer.

[0024] The conductor layer 1 is provided with a tensile core wire 7, which is located at the center of the conductor layer 1.

[0025] The conductor layer 1 is further provided with several sets of wire cores 8. Each wire core 8 is composed of multiple copper wires 9 concentrically twisted together. The surface of each copper wire 9 is coated with a layer of nanoscale graphene coating. The wire core 8 is provided with a separating insulation layer 10.

[0026] A filling layer 11 is provided between the inner insulation layer 2 and the inner shielding layer 3. The filling layer 11 is composed of a mixture of polypropylene fiber filaments and glass fiber filaments, and the diameter of the filling material of the filling layer 11 is 0.02mm - 0.05mm.

[0027] The inner insulation layer 2 tightly covers the conductor layer 1 and is made of cross-linked polyethylene insulating material. The thickness of the inner insulation layer 2 is between 0.2 mm and 1.0 mm.

[0028] The internal shielding layer 3 is provided with a first shielding layer 12 and a second shielding layer 13 from the inside out. The first shielding layer 12 is made of microwave absorbing paper material, and the second shielding layer 13 is composed of tin-plated copper wire. The diameter of the tin-plated copper wire in the second shielding layer 13 is 0.1mm-0.2mm, and the braiding angle is 30°-60°.

[0029] The outer sheath structure 6 and the inner sheath structure 5 are made of polyurethane material. The outer sheath structure 6 is formed by extrusion process and has a thickness of 0.3-0.6mm. The surface of the sheath layer 4 is provided with anti-slip texture. The interior of the outer sheath structure 6 is filled with flame-retardant fiber.

[0030] In operation, the conductor layer 1 serves as the core for current transmission, and the internal tensile core wire 7 enhances the overall tensile strength, ensuring it is not easily broken in complex environments. Multiple sets of wire cores 8, composed of multiple copper wires 9 with a nano-scale graphene coating, are concentrically twisted together. This not only improves conductivity, but the nano-scale graphene coating also enhances oxidation and corrosion resistance. The insulating layer 10 effectively isolates the individual wire cores 8, preventing short circuits.

[0031] The inner insulation layer 2, which tightly encloses the conductor layer 1, is made of cross-linked polyethylene insulation material with a thickness between 0.2 mm and 1.0 mm, providing reliable insulation for the conductor layer 1 and ensuring safe current transmission. The filler layer 11 between the insulation layer and the shielding layer is composed of a mixture of polypropylene fiber filaments and glass fiber filaments, which serves as a buffer and support, enhancing the cable's flexibility.

[0032] The internal shielding layer 3 has a double-layer design. The first shielding layer 12 is made of absorbing paper material, which effectively absorbs electromagnetic waves. The second shielding layer 13 is woven from tin-plated copper wire with a diameter of 0.1mm-0.2mm and a weaving angle of 30°-60°, which can effectively shield external electromagnetic interference.

[0033] The inner sheath structure 5 of the sheath layer 4 tightly covers the shielding layer, and the outer sheath structure 6 is made of polyurethane material, formed by extrusion process, with a thickness of 0.3-0.6mm. The surface anti-slip texture facilitates installation and operation, and the flame-retardant fiber filling inside improves the fire resistance of the cable, providing all-round protection for the internal structure and ensuring that the cable works stably under various complex working conditions.

[0034] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A highly flexible and fold-resistant shielded cable, comprising a shielded cable body, characterized in that, The shielded cable body includes a conductor layer (1) disposed at the center of the shielded cable body. An inner insulation layer (2) is disposed outside the conductor layer (1). An inner shielding layer (3) and a sheath layer (4) are disposed outside the inner insulation layer (2) in sequence. The sheath layer (4) consists of an inner sheath structure (5) and an outer sheath structure (6). The inner sheath structure (5) covers the outer surface of the shielding layer.

2. The highly flexible and fold-resistant shielded cable according to claim 1, characterized in that, The conductor layer (1) is provided with a tensile core wire (7), which is located at the center of the conductor layer (1).

3. The highly flexible and fold-resistant shielded cable according to claim 1, characterized in that, The conductor layer (1) is further provided with several sets of wire cores (8). The wire cores (8) are composed of multiple copper wires (9) twisted together concentrically. The surface of the copper wires (9) is coated with a layer of nanoscale graphene coating. The wire cores (8) are provided with a separating insulation layer (10).

4. A highly flexible and fold-resistant shielded cable according to claim 1, characterized in that, A filling layer (11) is provided between the inner insulation layer (2) and the inner shielding layer (3). The filling layer (11) is composed of a mixture of polypropylene fiber filaments and glass fiber filaments. The diameter of the filling material of the filling layer (11) is 0.02 mm - 0.05 mm.

5. A highly flexible and fold-resistant shielded cable according to claim 1, characterized in that, The inner insulation layer (2) tightly covers the conductor layer (1) and is made of cross-linked polyethylene insulation material. The thickness of the inner insulation layer (2) is between 0.2 mm and 1.0 mm.

6. A highly flexible and fold-resistant shielded cable according to claim 1, characterized in that, The internal shielding layer (3) is provided with a first shielding layer (12) and a second shielding layer (13) from the inside out. The first shielding layer (12) is made of microwave absorbing paper material, and the second shielding layer (13) is made of tin-plated copper wire. The diameter of the tin-plated copper wire in the second shielding layer (13) is 0.1mm-0.2mm, and the braiding angle is 30°-60°.

7. A highly flexible and fold-resistant shielded cable according to claim 1, characterized in that, The outer sheath structure (6) and the inner sheath structure (5) are made of polyurethane material. The outer sheath structure (6) is formed by extrusion process and its thickness is 0.3-0.6mm. The surface of the sheath layer (4) is provided with anti-slip texture. The interior of the outer sheath structure (6) is filled with flame-retardant fiber.

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