A braided shielded cable

Abstract

The present invention relates to the technical field of cables, and particularly relates to a braided shield cable. The braided shield cable includes an outer skin; N wire cores are inserted into the outer skin, where N is an even number greater than or equal to four; an insulating layer, a braided shield protection integrated layer, and a support member are sequentially sleeved on each wire core from the inside to the outside. The number of support members on each wire core is multiple. The multiple support members on the same wire core are arranged at intervals along the axial direction, and the support members on different wire cores are arranged alternately along the axial direction. The support member has elasticity and is in a strip structure. The two ends of the support member are arranged to slide crosswise, and respectively bypass from both sides of the wire core on the opposite side and support on the inner peripheral wall of the outer skin. One ends of adjacent support members coincide in the circumferential direction. When the cable is subjected to an external bending force, the presence of the support member can bear most of the bending force. At the same time, the support member can move inward, so that the area of the annular region formed by it increases, enabling the wire core to have a certain free movement space to reduce stress.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and particularly to a braided shield cable. Background Art

[0002] As a crucial wire product, cables play an irreplaceable role in various fields of modern society, and their main function is to achieve efficient transmission of electric energy, electrical signals, and information.

[0003] There are various types of cables. According to their uses, they can be divided into power cables, communication cables, control cables, and shield cables. Among them, shield cables are mainly used in occasions with strict requirements for the electromagnetic environment and the need to effectively resist electromagnetic interference, such as computer and DCS systems, etc. In related technologies, for example, Chinese Patent CN222619434U discloses a shield cable. This shield cable effectively prevents the influence of the magnetic field effect generated during the energization of the cable on surrounding cables, equipment, and instruments by means of a shielding net arranged in the shielding layer, multiple rows of magnetic beads wound and installed in the magnetic bead installation layer, and a conductive coating provided by coating with a conductive paint between the shielding layer and the magnetic bead installation layer.

[0004] However, there are also some problems in the use of existing shield cables: when a shield cable is subjected to external forces, its outer surface is prone to local pressure damage due to local stress. Such pressure damage not only damages the cable, reduces the mechanical protection ability of the cable, but may also further affect the internal conductor, causing the conductor to bear a large stress. In a long-term stress state, the metal material of the conductor may undergo fatigue damage, thereby affecting the electrical conductivity of the shield cable and reducing the service life of the shield cable, which is extremely unfavorable for the long-term stable use of the shield cable. Summary of the Invention

[0005] Based on this, it is necessary to provide a braided shield cable to address the problems of low service life and poor stability existing in the current shield cable during use.

[0006] The above object is achieved by the following technical solutions:

[0007] A braided shielded cable, the braided shielded cable comprising an outer sheath; N wire cores are inserted inside the outer sheath, N being an even number greater than or equal to four; an insulating layer, a braided shield protection integrated layer, and a support member are sequentially sleeved on each wire core from the inside to the outside, the number of the support members on each wire core is multiple, the multiple support members on the same wire core are arranged at intervals along the axial direction, and the support members on different wire cores are arranged alternately along the axial direction; the support member has elasticity and is in a strip structure, two ends of the support member are arranged in a cross-sliding manner, and respectively bypass from both sides of the wire core on the opposite side and are supported on the inner peripheral wall of the outer sheath, and one ends of adjacent support members are arranged to coincide in the circumferential direction.

[0008] Further, arc portions are provided at both ends of the support member, and the arc portions are concentric with the outer sheath.

[0009] Further, the braided shield protection integrated layer comprises a braided shield layer and a protection layer, and the protection layer is located outside the braided shield layer.

[0010] Further, the braided shield layer comprises warp threads and weft threads, and the routing modes of the warp threads and the weft threads are in an X shape.

[0011] Further, the materials of the warp threads and the weft threads both comprise copper.

[0012] Further, an inner filler is provided between the wire cores; an outer filler is provided between the wire cores and the outer sheath.

[0013] Further, the material of the inner filler or the outer filler is one of polypropylene, glass fiber, polyethylene foam, aramid or cotton yarn.

[0014] Further, both the inner filler and the outer filler are in strip structures.

[0015] Further, the inner filler and the outer filler are one of a polyester filling rope, an aramid filling rope, a polyamide filling rope or a hemp rope.

[0016] Further, the material of the insulating layer is one of polyurethane, polyvinyl chloride or polypropylene.

[0017] The beneficial effects of the present invention are:

[0018] During the use of the braided shielded cable provided by the present invention, when the braided shielded cable is subjected to an external bending force, the presence of the support member can bear most of the bending force. At the same time, at least one end of the support member can move inward under the action of the bending force, so that the area of the annular region formed by it increases, and then the wire core has a certain free movement space to reduce the stress on the wire core. When the braided shielded cable is subjected to a circumferential clamping force, both ends of the support member in the circumferential direction will move inward under the action of the circumferential clamping force, so that the areas of the annular regions formed by them will increase. On the one hand, this can generate a force to push the outer skin outward, which is beneficial to ensuring that the shape of the braided shielded cable will not change too much. On the other hand, it makes the wire core have a certain free movement space, reduces the direct action of the circumferential clamping force on the wire core, and the wire core can moderately adjust its own position according to the force direction in this space to avoid stress concentration caused by excessive force, thus significantly reducing the influence of the circumferential clamping force on the wire core, effectively ensuring the normal working state of the wire core, and improving the stability and service life of the braided shielded cable in a complex stress environment.

[0019] Further, by providing an inner filler, it can effectively position and support the wire core; by providing an outer filler, it can further enhance the mechanical protection of the internal structure of the braided shielded cable; and when cutting the braided shielded cable, the two sides of the position to be cut can be clamped by an external jacket. Under the clamping force of the external jacket, both ends of the support member move inward, so that the area of the annular region formed by it increases, and then the inner filler and the outer filler located at the position to be cut are compressed, so that the inner filler and the outer filler located at the position to be cut change from a loose state to a dense state, and then their hardness increases and the area decreases, thereby improving the smoothness and section neatness during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial cross-sectional structural schematic diagram of the braided shielded cable provided by the embodiment of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the braided shielded cable removing the outer skin and the outer filler provided by the embodiment of the present invention;

[0022] Figure 3 It is a cross-sectional structural schematic of the braided shielded cable provided by the embodiment of the present invention Figure 1 ;

[0023] Figure 4 It is a cross-sectional structural schematic of the braided shielded cable provided by the embodiment of the present invention Figure 2 ;

[0024] Figure 5Schematic three-dimensional structure diagram during the assembly of the core, insulation layer, braided shielding protection integrated layer, and support member of the braided shielding cable provided by the embodiment of the present invention;

[0025] Figure 6 Schematic three-dimensional structure diagram of the support member of the braided shielding cable provided by the embodiment of the present invention.

[0026] Wherein:

[0027] 1. Outer skin; 2. Core; 3. Insulation layer; 4. Braided shielding protection integrated layer; 5. Support member; 501. Arc portion; 502. Socket portion; 503. Notch; 6. Inner filler; 7. Outer filler; 701. Depression. Detailed implementation manners

[0028] In order to make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The terms "connection" and "coupling" used herein, unless otherwise specifically stated, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0031] Such as Figures 1 to 6As shown in the figure, the braided shielded cable provided by the embodiment of the present invention is arranged to include an outer skin 1; N wire cores 2 are inserted into the outer skin 1, where N is an even number greater than or equal to four; an insulating layer 3, a braided shield protection integrated layer 4, and a support member 5 are sequentially sleeved on each wire core 2 from the inside to the outside. There are multiple support members 5 on each wire core 2. The multiple support members 5 on the same wire core 2 are arranged at intervals along the axial direction, and the support members 5 on different wire cores 2 are arranged alternately along the axial direction. The support member 5 has elasticity and is in a strip structure. The two ends of the support member 5 are arranged to slide crosswise, and respectively bypass from both sides of the wire core 2 on the opposite side and support on the inner peripheral wall of the outer skin 1. One end of the adjacent support members 5 is arranged to coincide in the circumferential direction.

[0032] Specifically in this embodiment, the outer skin 1 is a tubular structure with both ends open; the wire core 2 is a columnar structure and is inserted into the outer skin 1 in parallel; the insulating layer 3 is a tubular structure with both ends open and is sleeved on the wire core 2 to ensure that it can play an insulating role; the braided shield protection integrated layer 4 is a tubular structure with both ends open and is sleeved on the insulating layer 3 to ensure that it can play a shielding and protecting role; as Figure 4 and Figure 5 shown, the support member 5 is a strip-shaped band structure, and the band surface of the support member 5 is arranged parallel to the axis of the wire core 2. The two ends of the support member 5 are arranged crosswise to form an annular socket part 502. When the support member 5 is installed, it is movably sleeved on the wire core 2 through the socket part 502. Notches 503 are arranged on the side walls of the bands at both ends of the support member 5, which are close to each other at the intersection of the support member 5. The two notches 503 of the support member 5 are bonded and slidably arranged to ensure that both ends of the support member 5 have relative movable space.

[0033] Taking N equal to four as an example, that is, there are four wire cores 2; four support members 5 are in a group, and the arrangement modes of multiple groups of support members 5 are the same; as Figure 3 shown, the four wire cores 2 are arranged in a square shape, and the socket part 502 of the first support member 5 is sleeved on the wire core 2 in the lower left corner. The two ends of this support member 5 respectively bypass from both sides of the wire core 2 in the upper right corner and support on the inner peripheral wall of the outer skin 1; as Figure 4 shown, the socket part 502 of the second support member 5 is sleeved on the wire core 2 in the lower right corner. The two ends of this support member 5 respectively bypass from both sides of the wire core 2 in the upper left corner and support on the inner peripheral wall of the outer skin 1; Figure 4 The vertical end of the support member 5 in [] is located between the two wire cores 2 above. Figure 3The vertical end of the support member 5 is located between the two upper wire cores 2, ensuring that their circumferential positions can be coincidentally arranged; the socket portion 502 of the third support member 5 is sleeved on the upper right wire core 2, and both ends of the support member 5 bypass from both sides of the lower left wire core 2 and are supported on the inner peripheral wall of the outer skin 1; the socket portion 502 of the fourth support member 5 is sleeved on the upper left wire core 2, and both ends of the support member 5 bypass from both sides of the lower right wire core 2 and are supported on the inner peripheral wall of the outer skin 1.

[0034] During use, when the braided shield cable is subjected to an external bending force, the presence of the support member 5 can bear most of the bending force. At the same time, under the action of the bending force, the ends of the support member 5 will be compressed inward, causing the area of the annular shape formed by the socket portion 502 to increase, and further increasing the gap between the socket portion 502 and the wire core 2, providing space for the wire core 2 to adjust its position; during this process, the wire core 2 can be appropriately displaced within the dynamic space created by the support member 5, thereby reducing the internal stress of the wire core 2 caused by bending, protecting the insulation layer 3 and the braided shield protection integrated layer 4 from being excessively squeezed or stretched, and ensuring that the cable can still maintain normal conductive and shielding performance under the bent state.

[0035] When the braided shield cable is subjected to a circumferential clamping force, the circumferential clamping force will cause the entire cable to be squeezed from the circumferential direction. In this case, each support member 5 will be subjected to a pressure towards the center of the cable; due to the elasticity of the support member 5, they will move inward synchronously, causing the area of the socket portion 502 thereon to increase. Thus, on the one hand, the support member 5 generates a force to push the outer skin 1 outward due to elastic deformation, forming a certain degree of confrontation with the circumferential clamping force, relieving the pressure borne by the outer skin 1, and preventing the outer skin 1 from being damaged due to excessive compression; on the other hand, the wire core 2 obtains a certain free movement space within the enlarged socket portion 502, and the wire core 2 can moderately adjust its position within this space according to the distribution of the circumferential clamping force, reducing the stress directly acting on the wire core 2 by the circumferential clamping force, thereby effectively protecting the structural integrity of the wire core 2 and ensuring the long-term stable operation of the cable when subjected to the circumferential clamping force and continuously exerting its conductive and shielding functions.

[0036] In some embodiments, arc portions 501 are provided at both ends of the support member 5. The arc portions 501 are concentric with the outer skin 1, and the outer arc surfaces of the arc portions 501 abut against the inner peripheral wall of the outer skin 1, so as to increase the contact area with the outer skin 1. According to the mechanical principle, under the action of the same supporting force, the larger the contact area, the smaller the pressure borne per unit area, which helps to reduce the local pressure on the outer skin 1, thereby improving the stability of the support for the outer skin 1. For example, when the braided shield cable is subjected to external forces such as vibration and impact, a larger contact area can disperse the external force more evenly, avoiding problems such as dents and damages on the outer skin 1 caused by excessive local stress, and providing a reliable support guarantee for the overall structure of the braided shield cable.

[0037] In addition, from the perspective of the range of external forces received, the setting of the arc portion 501 significantly broadens the direction and range of external forces that the support member 5 can bear: Since the arc portion 501 has an arc-shaped structure, its mechanical properties in all directions are relatively balanced. When external forces are applied to the braided shield cable from different angles, the arc portion 501 can better adapt to and receive these forces, and transfer them to other parts of the braided shield cable through its own structure. This enables the support member 5 to effectively protect the internal structure of the braided shield cable under complex stress conditions, ensure the normal operation of the braided shield cable, and greatly improve the applicability and reliability of the braided shield cable under various working conditions.

[0038] Specifically in this embodiment, the arc portion 501 has a structure similar to the letter "E", and the contact surfaces between the cantilevers at both ends and the middle cantilever of the arc portion 501 are all arc surfaces, so as to be able to closely fit the outer surface of the core 2, realizing multi-point contact between the support member 5 and the core 2. Multi-point contact not only increases the friction between the support member 5 and the core 2, effectively preventing the support member 5 from shifting during use and ensuring the stable support of the support member 5 for the core 2, but also, when the cable is subjected to external forces, this multi-point contact method can disperse the external force more evenly to the core 2, avoiding stress concentration on the core 2 due to excessive local stress, thereby playing a good protective role for the core 2.

[0039] At the same time, the close fit of the arc surface with the core 2 can also reduce the gap between the support member 5 and the core 2 to a certain extent, reduce the risk of electromagnetic interference leakage caused by the gap, further improve the shielding performance of the cable, and ensure the stable operation of the cable in a complex electromagnetic environment.

[0040] In some other embodiments, the braided shield protection integrated layer 4 includes a braided shield layer and a protection layer, and the protection layer is located outside the braided shield layer.

[0041] Specifically in the embodiment, the protective layer is the outermost layer structure of the integrated woven shield protection layer 4, directly contacting the support member 5, the adjacent wire cores 2, and the outer sheath 1, mainly playing the role of resisting physical damage. It can provide a basic protection barrier for the internal woven shield layers and the wire cores 2, effectively extending the service life of the cable.

[0042] Furthermore, the woven shield layer is arranged to include warp threads and weft threads, and the routing modes of the warp threads and the weft threads are in an X shape.

[0043] Specifically, the X-shaped routing mode can form a denser and more complex shielding network structure in a limited space; when an electromagnetic interference signal attempts to penetrate the woven shield layer, the X-shaped warp threads and weft threads are intertwined with each other, capable of reflecting and scattering the interference signal multiple times; this multiple reflection and scattering process greatly increases the propagation path of the interference signal, causing its energy to continuously dissipate during this process, thereby significantly improving the shielding effect of the woven shield layer on electromagnetic interference and providing a more reliable electromagnetic protection environment for the wire cores 2.

[0044] Furthermore, the materials of both the warp threads and the weft threads include copper.

[0045] Specifically, as an excellent conductive metal, copper has excellent electrical conductivity and good flexibility. Its high electrical conductivity can ensure that in the woven shield layer, electromagnetic interference signals can be quickly conducted and dissipated through the copper warp threads and weft threads, preventing the interference signals from accumulating inside the cable and affecting the normal operation of the wire cores 2; at the same time, the flexibility of copper enables the warp threads and weft threads to be more easily woven in the X-shaped routing mode during the weaving process, and when the cable is subjected to external forces such as bending and stretching, it can maintain the integrity of the structure and will not break due to the brittleness of the material, thereby continuously and stably exerting its shielding function and ensuring the stable operation of the cable under various working conditions.

[0046] In some other embodiments, an inner filler 6 is arranged between the wire cores 2; an outer filler 7 is arranged between the wire cores 2 and the outer sheath 1.

[0047] Specifically in this embodiment, on the one hand, the inner filler 6 fills the gaps between the wire cores 2, capable of effectively positioning and supporting the wire cores 2; when the cable is subjected to external forces such as stretching, bending, or vibration, the inner filler 6 can prevent the wire cores 2 from rubbing and colliding with each other, avoiding damage to the insulating layer 3 of the wire cores 2 due to friction, thereby ensuring the normal operation and service life of the wire cores 2; at the same time, the inner filler 6 can enhance the integrity between the wire cores 2, enabling the wire cores 2 to respond collaboratively when the cable is stressed and improving the overall mechanical performance of the woven shield cable.

[0048] On the other hand, the outer filler 7 can further enhance the mechanical protection of the internal structure of the braided shielded cable. When the cable is subjected to external forces such as extrusion and impact, the outer filler 7 can disperse the external forces, reduce the direct impact of the external forces on the outer skin 1 and the core 2, and protect the integrity of the overall structure of the cable. At the same time, the outer filler 7 can also play a buffering role to a certain extent, relieve the thermal expansion and contraction of the internal materials of the cable caused by environmental factors such as temperature changes, and avoid damage to the internal structure of the cable caused by the stress generated by thermal expansion and contraction.

[0049] During use, when cutting the braided shielded cable, the two sides of the position to be cut (to avoid cutting the support member 5, this cutting position is located between two adjacent support members 5 arranged circumferentially and overlapping) can be clamped by an external jacket (such as a hoop). Under the clamping force of the external jacket, the two ends of the support member 5 move inward, increasing the area of the socket part 502. On the one hand, it can compress the outer filler 7 at the position to be cut. On the other hand, the straight end part of the support member 5 has a tendency to become arc-shaped, so that it can compress the inner filler 6 inward, making the inner filler 6 and the outer filler 7 at the position to be cut change from a loose state to a dense state, thereby increasing their hardness and reducing their area, and thus improving the smoothness and section neatness during cutting.

[0050] At the same time, since the support members 5 are arranged axially, two recessed parts 701 will be formed on the outer peripheral wall of the outer skin 1 in the same circumferential direction. The two recessed parts 701 are respectively arranged corresponding to the two ends of the same support member 5. The existence of the recessed parts 701 can help the operator quickly locate the cutting position, thus facilitating the improvement of the cutting efficiency.

[0051] Furthermore, the materials of the inner filler 6 and the outer filler 7 can be set as one of polypropylene, glass fiber, polyethylene foam, aramid or cotton yarn.

[0052] Specifically, polypropylene has good insulation properties and certain mechanical strength. It has high chemical stability and can remain stable in different environments, effectively preventing adverse effects on the core 2 and the outer sheath 1 due to the chemical changes of the filler itself. It is suitable for cable application scenarios with certain requirements for insulation and mechanical properties. Glass fiber has characteristics such as high strength, high temperature resistance, and corrosion resistance, which can significantly improve the mechanical strength of the cable and enhance its ability to resist harsh external environments. It is especially suitable for cables used in high-temperature and high mechanical stress environments. Foamed polyethylene has the characteristics of light weight, good insulation, and excellent buffering performance. It can provide good insulation and buffering effects while reducing the overall weight of the cable, and is widely used in fields such as communication cables that are sensitive to weight and insulation performance. Aramid has outstanding properties such as high strength, high modulus, high temperature resistance, and chemical corrosion resistance. As a filler, it can greatly improve the comprehensive performance of the cable, making it suitable for special cables in extreme environments. Cotton yarn is soft and has good water absorption. It can absorb the moisture that may be generated inside the cable to a certain extent and provide a certain buffering effect at the same time. It is widely used in some cables with relatively strict cost control and relatively moderate performance requirements. By reasonably selecting these materials as the inner and outer fillers 7, the overall performance of the cable can be optimized according to different usage scenarios and performance requirements of the cable.

[0053] In other embodiments, to facilitate the installation of the inner filler 6 and the outer filler 7, both the inner filler 6 and the outer filler 7 can be set as strip-shaped structures.

[0054] Specifically in this embodiment, taking N equal to four as an example, that is, the number of cores 2 is set to four; as Figure 3 shown, the number of inner fillers 6 is correspondingly set to four. The four inner fillers 6 are all inserted into the area surrounded by the four cores 2 and are evenly arranged along the circumferential direction. The cross-sectional shape of the inner filler 6 is a quasi-right triangle, and the sides where the two right angles of the inner filler 6 are located are respectively abutted against the adjacent belt surfaces at both ends of the support 5. The side where the right angle of the inner filler 6 is located is an arc surface and is abutted against the outer peripheral wall of the braided shielding protection integrated layer 4. The number of outer fillers 7 is correspondingly set to four. The four outer fillers 7 are respectively arranged between the core 2 and the outer sheath 1. The outer filler 7 is an arc-shaped structure and covers the socket part 502.

[0055] During the process of assembling the braided shielding cable, first arrange the four cores 2 in a square layout, and then insert the four inner fillers 6 into the area surrounded by the four cores 2 at the same time. Due to its strip-shaped structure, it can flexibly adapt to the irregular space between the cores 2, and the operation is simple, which can effectively improve the installation efficiency.

[0056] Then, the first support member 5 is sleeved on one of the wire cores 2 and axially moved to a proper position. Then, the second support member 5 is rotated by 90 degrees, sleeved on the next wire core 2, and axially moved to a proper position. The process of rotating the support member 5 by 90 degrees and sleeving it on the next wire core 2 and axially moving it to a proper position is repeated so that all the support members 5 are arranged in a spiral pattern.

[0057] Then, four outer fillers 7 are respectively inserted between the sleeving portion 502 and the outer sheath 1. Due to its strip structure, it is not only convenient for manual operation but also can ensure that the outer fillers 7 are more evenly distributed inside the shielded cable, providing stable support and protection for the shielded cable.

[0058] Furthermore, the inner filler 6 and the outer fillers 7 can be made of one of polyester filling cords, aramid filling cords, polyamide filling cords or hemp cords.

[0059] Specifically, the polyester filling cord has good flexibility and certain wear resistance. Its chemical properties are stable and it can maintain the stability of its shape and performance in various environments. Using the polyester filling cord as the inner and outer fillers 7 in the cable can effectively reduce the friction between the wire cores 2 and between the wire core 2 and the outer sheath 1, and at the same time has a certain buffering effect, which is suitable for cables in general industrial environments. The aramid filling cord, with its high strength, high modulus, excellent high-temperature resistance and chemical corrosion resistance, performs outstandingly in some special occasions with extremely high requirements for cable performance, such as cables used in high-temperature, high-pressure and strong-corrosion environments. It can significantly enhance the mechanical strength of the cable and improve the overall stability and service life of the cable. The polyamide filling cord has good elastic recovery and anti-fatigue properties. When the cable is subjected to external forces such as repeated bending and stretching, it can always maintain a good filling effect and prevent the filler from deforming due to external forces and affecting the cable performance. It is often used in mobile device cables with high requirements for flexibility and durability. As a natural fiber filling material, the hemp cord has the characteristics of low cost and soft texture. It can absorb the moisture inside the cable to a certain extent, and its soft characteristics can effectively buffer the stress inside the cable, which is relatively common in cable applications that are sensitive to cost and have relatively mild environmental conditions.

[0060] In some other embodiments, the material of the insulating layer 3 is one of polyurethane, polyvinyl chloride, and polypropylene.

[0061] Specifically in this embodiment, if polyurethane is selected as the material of the insulating layer 3, polyurethane has excellent wear resistance, oil resistance and good electrical insulation performance. It has good elasticity and can still maintain good insulation effect when the cable is subjected to external forces such as bending and stretching, and is not easy to produce cracks or breakages. It is suitable for some cable scenarios that need to be frequently moved or bent, such as industrial robot cables, etc.; if polyvinyl chloride is used as the material of the insulating layer 3, polyvinyl chloride has the advantages of low cost, good processing performance and stable insulation performance. It can maintain good insulation performance within a wide temperature range and has certain flame retardancy, and is widely used in various conventional power cables and communication cables; when polypropylene is selected as the material of the insulating layer 3, polypropylene has a high insulation resistance and good chemical corrosion resistance. Its dielectric constant is low, which can effectively reduce the loss during signal transmission, and is particularly suitable for high-frequency communication cables and other fields with high requirements for signal transmission quality; by reasonably selecting the material of the insulating layer 3, reliable insulation protection can be provided for the core 2 according to different usage scenarios and performance requirements of the cable, ensuring the safe and stable operation of the cable.

[0062] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0063] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A braided shielded cable, characterized in that: The braided shielded cable comprises an outer sheath; N cores are inserted into the outer sheath, where N is an even number greater than or equal to four; each core is sequentially sleeved with an insulating layer, a braided shielding protection integrated layer, and a support member from the inside to the outside, and there are multiple support members on each core, and the multiple support members on the same core are arranged at intervals along the axial direction, and the support members on different cores are arranged alternately along the axial direction; the support member is elastic and has a strip structure, and the two ends of the support member are cross-slidably arranged, and are respectively bypassed from both sides of the opposite core and supported on the inner circumferential wall of the outer sheath, and the ends of adjacent support members are arranged to overlap in the circumferential direction; The support member is a strip-shaped belt-like structure, and the belt surface of the support member is arranged parallel to the axis of the wire core, and the two ends of the support member are arranged crosswise to form an annular sleeve portion. When the support member is installed, the sleeve portion is movably sleeved on the wire core, and notches are arranged at the intersection of the support member and on the belt side walls close to each other at the two ends of the support member. The two notches of the support member are keyed to each other and slidably arranged to ensure that both ends of the support member have space for relative movement; Both ends of the support member are provided with arc portions, and the arc portions and the outer skin are arranged concentrically.

2. The braided shielded cable according to claim 1, characterized in that: The braided shielding protection integrated layer includes a braided shielding layer and a protection layer, and the protection layer is located outside the braided shielding layer.

3. The braided shielded cable according to claim 2, characterized in that: The braided shielding layer includes warp threads and weft threads, and the warp threads and weft threads are arranged in an X shape.

4. The braided shielded cable according to claim 3, characterized in that: The materials of the warp threads and the weft threads both include copper.

5. The braided shielded cable according to claim 1, characterized in that: An inner filler is arranged between the wire cores; and an outer filler is arranged between the wire core and the outer sheath.

6. The braided shielded cable according to claim 5, characterized in that: The material of the inner filler or the outer filler is one of polypropylene, glass fiber, foamed polyethylene, aramid or cotton yarn.

7. The braided shielded cable according to claim 5, characterized in that: The inner filler and the outer filler are both in strip-shaped structures.

8. The braided shielded cable according to claim 7, characterized in that: The inner filler and the outer filler are one of polyester filling rope, aramid filling rope, polyamide filling rope or hemp rope.

9. The braided shielded cable according to claim 1, characterized in that: The material of the insulating layer is one of polyurethane, polyvinyl chloride or polypropylene.

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