Braided shielding cable

Abstract

The invention relates to the technical field of cables, in particular to a braided shielding cable which comprises a sheath. N wire cores are inserted in the sheath, and N is an even number greater than or equal to four; each wire core is sequentially sleeved with an insulating layer, a woven shielding protection integrated layer and a supporting piece from inside to outside, the number of the supporting pieces on each wire core is multiple, the multiple supporting pieces on the same wire core are arranged at intervals in the axial direction, the supporting pieces on different wire cores are alternately arranged in the axial direction, the supporting pieces have elasticity and are of a strip-shaped structure, and the supporting pieces are arranged in the axial direction. The two ends of each supporting piece are arranged in a crossed and sliding mode, bypass the two sides of the wire core on the opposite side and are supported on the inner circumferential wall of the outer skin, and the positions of one ends of the adjacent supporting pieces coincide in the circumferential direction. When the cable is subjected to external bending force, the supporting piece can bear most of the bending force, and meanwhile, the supporting piece can move inwards, so that the area of an annular region formed by the supporting piece is increased, the cable core has a certain free movement space, and the stress is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a braided shielded cable. Background Art

[0002] As a vital wire product, cable plays an irreplaceable role in various fields of modern society. Its main function is to achieve efficient transmission of electrical energy, electrical signals and information.

[0003] There are many types of cables, which can be divided into power cables, communication cables, control cables and shielded cables according to their uses. Shielded cables are mainly used in situations where strict requirements on the electromagnetic environment are required and effective resistance to electromagnetic interference is required, such as computers and DCS systems. In related technologies, for example, Chinese patent CN222619434U discloses a shielded cable. The shielded cable has a shielding mesh arranged in the shielding layer, multiple rows of magnetic beads installed around the magnetic bead mounting layer, and a conductive coating is provided between the shielding layer and the magnetic bead mounting layer by coating with conductive paint, which effectively prevents the magnetic field effect generated during the power-on process of the cable from affecting the surrounding cables, equipment and instruments.

[0004] However, existing shielded cables also have some problems during use: when the shielded cable is subjected to external force, its outer surface is prone to pressure loss due to local force. This pressure loss will not only damage the cable and reduce the mechanical protection capability of the cable, but may also further affect the internal conductor, causing the conductor to be subjected to greater stress. If it is in this stress state for a long time, the metal material of the conductor may suffer fatigue damage, thereby affecting the conductive performance of the shielded cable and reducing the service life of the shielded cable, which is extremely unfavorable for the long-term and stable use of the shielded cable. Summary of the invention

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

[0006] The above purpose is achieved through the following technical solutions: A braided shielded cable, comprising 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. 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 members are elastic and have a strip structure, with both ends of the support members cross-slidingly arranged, and respectively bypassing the two sides of the cores on the opposite side and supported on the inner circumferential wall of the outer sheath, and one end of adjacent support members is arranged to overlap in the circumferential direction.

[0007] Furthermore, both ends of the support member are provided with arc portions, and the arc portions and the outer skin are concentrically arranged.

[0008] Furthermore, 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.

[0009] Furthermore, the braided shielding layer includes warp threads and weft threads, and the warp threads and weft threads are arranged in an X shape.

[0010] Furthermore, the materials of the warp and the weft both include copper.

[0011] Furthermore, an inner filler is arranged between the wire cores; and an outer filler is arranged between the wire core and the outer sheath.

[0012] Furthermore, the material of the inner filler or the outer filler is one of polypropylene, glass fiber, foamed polyethylene, aramid or cotton yarn.

[0013] Furthermore, the inner filler and the outer filler are both strip-shaped structures.

[0014] Furthermore, the inner filler and the outer filler are one of polyester filling rope, aramid filling rope, polyamide filling rope or hemp rope.

[0015] Furthermore, the material of the insulating layer is one of polyurethane, polyvinyl chloride or polypropylene.

[0016] The beneficial effects of the present invention are: A braided shielded cable provided by the present invention is provided. During use, when the braided shielded cable is subjected to external bending force, the existence of the support member can withstand most of the bending force, and at the same time, under the action of the bending force, at least one end of the support member can move inward, so that the area of ​​the annular region formed by it increases, thereby allowing the wire core to have a certain free movement space to reduce the stress on the wire core; when the braided shielded cable is subjected to circumferential clamping force, under the action of the circumferential clamping force, both ends of the circumferential support member will move inward, so that the area of ​​the annular region formed by each will increase, thereby, on the one hand, being able to generate a force to prop up the outer skin outward, which is beneficial to ensure that the shape of the braided shielded cable does not change too much, and on the other hand, allowing the wire core to have a certain free movement space, reducing the direct effect of the circumferential clamping force on the wire core, and the wire core can appropriately adjust its own position in the space according to the force direction, avoiding stress concentration due to excessive force, thereby 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 force environment.

[0017] Furthermore, 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, and the clamping force of the external jacket causes the two ends of the support to move inward, thereby increasing the area of ​​the annular region formed by it, thereby compressing the inner filler and outer filler at the position to be cut, so that the inner filler and outer filler at the position to be cut are changed from a loose state to a dense state, thereby increasing their hardness and reducing their area, thereby improving the smoothness and cross-sectional neatness during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a partial cross-sectional structure of a braided shielded cable provided in an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a braided shielded cable without the outer sheath and outer filler provided in an embodiment of the present invention; Figure 3 A cross-sectional view of a braided shielded cable provided in an embodiment of the present invention Figure 1 ; Figure 4 A cross-sectional view of a braided shielded cable provided in an embodiment of the present invention Figure 2 ; Figure 5 A schematic diagram of the three-dimensional structure of the wire core, the insulating layer, the braided shielding protection integrated layer and the support member of the braided shielded cable provided in an embodiment of the present invention when assembled; Figure 6 A schematic diagram of the three-dimensional structure of a support member of a braided shielded cable provided in an embodiment of the present invention.

[0019] in: 1. Outer skin; 2. Wire core; 3. Insulating 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. Recessed portion. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is 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 therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] like Figures 1 to 6 As shown, the braided shielded cable provided in the embodiment of the present invention is configured to include an outer sheath 1; N cores 2 are inserted in the outer sheath 1, N is an even number greater than or equal to four; each core 2 is sequentially sleeved with an insulating layer 3, a braided shielding protection integrated layer 4, and a support member 5 from the inside to the outside, and there are multiple support members 5 on each core 2. The multiple support members 5 on the same core 2 are arranged at intervals along the axial direction, and the support members 5 on different cores 2 are arranged alternately along the axial direction. The support members 5 are elastic and have a strip structure. The two ends of the support members 5 are cross-slidably arranged, and they respectively bypass the two sides of the opposite core 2 and are supported on the inner circumferential wall of the outer sheath 1, and one end of adjacent support members 5 is arranged to overlap in the circumferential direction.

[0024] 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 in parallel in the outer skin 1; 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 shielding 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 protection role; Figure 4 and Figure 5As shown, the support member 5 is a strip-shaped belt-like structure, and the belt surface of the support member 5 is arranged parallel to the axis of the wire core 2, and the two ends of the support member 5 are arranged crosswise to form an annular sleeve portion 502. When installed, the support member 5 is movably sleeved on the wire core 2 through the sleeve portion 502. Notches 503 are arranged at the intersection of the support member 5 and on the side walls of the belt close to each other at the two ends of the support member 5. The two notches 503 of the support member 5 are keyed to each other and slidably arranged to ensure that both ends of the support member 5 have space for relative movement.

[0025] Take N equal to four as an example, that is, the number of the wire cores 2 is four; four support members 5 form a group, and the arrangement of multiple groups of support members 5 is the same; Figure 3 As shown, the four wire cores 2 are arranged in a square shape, and the sleeve portion 502 of the first support member 5 is sleeved on the wire core 2 at the lower left, and the two ends of the support member 5 are respectively passed around the two sides of the wire core 2 at the upper right and supported on the inner peripheral wall of the outer skin 1; Figure 4 As shown, the sleeve portion 502 of the second support member 5 is sleeved on the wire core 2 at the lower right, and the two ends of the support member 5 are respectively passed around the two sides of the wire core 2 at the upper left and supported on the inner peripheral wall of the outer skin 1; Figure 4 The vertical end of the support member 5 is located between the two upper cores 2. Figure 3 The vertical end of the support member 5 is located between the two upper wire cores 2, ensuring that the two positions in the circumferential direction can overlap; the sleeve connection portion 502 of the third support member 5 is sleeved on the wire core 2 at the upper right, and the two ends of the support member 5 are respectively passed around the two sides of the wire core 2 at the lower left and supported on the inner circumferential wall of the outer skin 1; the sleeve connection portion 502 of the fourth support member 5 is sleeved on the wire core 2 at the upper left, and the two ends of the support member 5 are respectively passed around the two sides of the wire core 2 at the lower right and supported on the inner circumferential wall of the outer skin 1.

[0026] During use, when the braided shielded cable is subjected to external bending force, the support member 5 can withstand most of the bending force. At the same time, the end of the support member 5 will be compressed inward under the action of the bending force, so that the area of ​​the ring formed by the sleeve part 502 increases, and then the gap between the sleeve part 502 and the core 2 increases, providing space for the core 2 to adjust its position; during this process, the core 2 can be appropriately displaced in the dynamic space created by the support member 5, thereby reducing the internal stress of the core 2 caused by bending, protecting the insulating layer 3 and the braided shielding protection integrated layer 4 from being excessively squeezed or stretched, and ensuring that the cable can still maintain normal conductivity and shielding performance in a bent state.

[0027] When the braided shielded 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 pressure toward the center of the cable; since the support members 5 are elastic, they will move inward synchronously, so that the area of ​​the sleeve portion 502 thereon will increase. Therefore, on the one hand, the support members 5 will generate a force to prop up the outer skin 1 outward due to elastic deformation, forming a certain degree of confrontation with the circumferential clamping force, alleviating the pressure on the outer skin 1, and preventing the outer skin 1 from being damaged due to excessive pressure; on the other hand, the core 2 obtains a certain amount of free movement space in this enlarged sleeve portion 502, and the core 2 can adjust its position appropriately in this space according to the distribution of the circumferential clamping force, reducing the stress of the circumferential clamping force directly acting on the core 2, thereby effectively protecting the structural integrity of the core 2, ensuring the long-term stable operation of the cable when subjected to the circumferential clamping force, and continuously exerting its conductive and shielding functions.

[0028] In some embodiments, arc portions 501 are provided at both ends of the support member 5, and the arc portion 501 and the outer skin 1 are arranged concentrically, and the outer arc surface of the arc portion 501 abuts against the inner circumferential wall of the outer skin 1, so that the contact area with the outer skin 1 can be increased; according to the principle of mechanics, under the same supporting force, the larger the contact area, the smaller the pressure 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 shielded cable is subjected to external vibration, impact and other forces, the larger contact area can disperse the external force more evenly, avoiding problems such as dents and damages of the outer skin 1 due to excessive local force, and providing reliable support guarantee for the overall structure of the braided shielded cable.

[0029] In addition, from the perspective of the range of external force, the setting of the arc portion 501 significantly broadens the direction and range of external force that the support member 5 can withstand: since the arc portion 501 is an arc-shaped structure, its force performance in various directions is relatively balanced. When external forces are applied to the braided shielded cable from different angles, the arc portion 501 can better adapt to and bear these forces, and transmit them to other parts of the braided shielded cable through its own structure. This enables the support member 5 to effectively protect the internal structure of the braided shielded cable under complex force environments and ensure the normal operation of the braided shielded cable, greatly improving the applicability and reliability of the braided shielded cable under various working conditions.

[0030] Specifically in this embodiment, the arc portion 501 is an E-shaped structure, and the contact surfaces of the cantilevers at both ends of the arc portion 501 and the middle cantilever are both arc surfaces, so that they can fit closely to the outer surface of the wire core 2, thereby realizing multi-point contact between the support member 5 and the wire core 2. The multi-point contact not only increases the friction between the support member 5 and the wire core 2, effectively preventing the support member 5 from being displaced during use, thereby ensuring the stable support of the wire core 2 by the support member 5, but also, when the cable is subjected to external force, this multi-point contact method can disperse the external force more evenly to the wire core 2, thereby avoiding stress concentration on the wire core 2 due to excessive local force, thereby providing good protection for the wire core 2.

[0031] At the same time, the close fit between the arc surface and the core 2 can also reduce the gap between the support 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 that the cable can operate stably even in complex electromagnetic environments.

[0032] In some other embodiments, the braided shielding protection integrated layer 4 includes a braided shielding layer and a protection layer, and the protection layer is located outside the braided shielding layer.

[0033] Specifically in the embodiment, the protective layer serves as the outermost structure of the braided shielding protection integrated layer 4, which is in direct contact with the support 5, the adjacent core 2, and the outer skin 1, and mainly plays the role of resisting physical damage. It can provide a basic protective barrier for the internal braided shielding layer and the core 2, effectively extending the service life of the cable.

[0034] Furthermore, the braided shielding is layered to include warp threads and weft threads, and the warp threads and weft threads are arranged in an X shape.

[0035] Specifically, the X-shaped routing method can form a denser and more complex shielding network structure within a limited space; when the electromagnetic interference signal attempts to penetrate the braided shielding layer, the X-shaped warp and weft threads are intertwined with each other, which can reflect and scatter the interference signal multiple times; this multiple reflection and scattering process greatly increases the propagation path of the interference signal, causing its energy to be continuously lost in this process, thereby significantly improving the shielding effect of the braided shielding layer on electromagnetic interference, providing a more reliable electromagnetic protection environment for the core 2.

[0036] Furthermore, the materials of the warp and weft threads both include copper.

[0037] Specifically, copper, as an excellent conductive metal, has excellent conductivity and good flexibility. Its high conductivity can ensure that in the braided shielding layer, the electromagnetic interference signal can be quickly transmitted and dissipated through the copper warp and weft threads, thereby avoiding the accumulation of interference signals inside the cable and affecting the normal operation of the core 2; at the same time, the flexibility of copper makes it easier to weave the warp and weft threads in an X-shaped routing manner 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, ensuring that the cable can operate stably under various working conditions.

[0038] In other embodiments, an inner filler 6 is provided between the wire cores 2 ; and an outer filler 7 is provided between the wire core 2 and the outer sheath 1 .

[0039] Specifically in this embodiment, on the one hand, the inner filler 6 fills the gaps between the cores 2, which can effectively position and support the cores 2; when the cable is subjected to external forces such as tension, bending or vibration, the inner filler 6 can prevent the cores 2 from rubbing and colliding with each other, thereby preventing the insulating layer 3 of the core 2 from being damaged due to friction, thereby ensuring the normal operation and service life of the core 2; at the same time, the inner filler 6 can enhance the integrity between the cores 2, so that the cores 2 can respond collaboratively when the cable is subjected to force, thereby improving the overall mechanical properties of the braided shielded cable.

[0040] 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 external extrusion and impact, the outer filler 7 can disperse the external force, reduce the direct impact of the external force on the outer sheath 1 and the core 2, and protect the overall structural integrity of the cable; at the same time, the outer filler 7 can also play a buffering role to a certain extent, alleviate the thermal expansion and contraction of the internal materials of the cable caused by environmental factors such as temperature changes, and avoid the stress caused by thermal expansion and contraction to damage the internal structure of the cable.

[0041] During use, when cutting the braided shielded cable, the two sides of the position to be cut (to avoid cutting the support member 5, the cutting position is located between two adjacent support members 5 that overlap circumferentially) can be clamped by an external jacket (such as a clamp), and the clamping force of the external jacket causes the two ends of the support member 5 to move inward, thereby increasing the area of ​​the sleeve portion 502. On the one hand, the outer filler 7 located at the position to be cut can be compressed, and on the other hand, the straight end portion of the support member 5 has a tendency to become an arc, thereby compressing the inner filler 6 inward, so that the inner filler 6 and the outer filler 7 located at the position to be cut are changed from a loose state to a dense state, thereby increasing their hardness and reducing their area, thereby improving the smoothness and cross-sectional neatness during cutting.

[0042] At the same time, since the support member 5 is arranged axially, two recessed portions 701 will be formed on the outer peripheral wall of the outer skin 1 on the same circumference. The two recessed portions 701 are respectively arranged corresponding to the two ends of the same support member 5. The existence of the recessed portions 701 can help the operator quickly locate the cutting position, thereby improving the cutting efficiency.

[0043] Furthermore, the material of the inner filler 6 and the outer filler 7 can be set to one of polypropylene, glass fiber, foamed polyethylene, aramid or cotton yarn.

[0044] Specifically, polypropylene has good insulation properties and certain mechanical strength. It has high chemical stability and can remain stable in different environments. It can effectively prevent the chemical changes of the filler itself from having adverse effects on the core 2 and the outer sheath 1. It is suitable for cable application scenarios with certain requirements for insulation and mechanical properties; glass fiber has the characteristics of high strength, high temperature resistance, corrosion resistance, etc., 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 while reducing the overall weight of the cable. Effect, 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 moisture that may be generated inside the cable to a certain extent, and at the same time provide a certain buffering effect. It is widely used in some cables with strict cost control and relatively moderate performance requirements; by reasonably selecting these materials as internal and external fillers7, the overall performance of the cable can be optimized according to the different usage scenarios and performance requirements of the cable.

[0045] In other embodiments, in order 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 configured as a strip structure.

[0046] Specifically in this embodiment, take N equal to four as an example, that is, the number of the wire cores 2 is set to four; Figure 3As shown, the number of inner fillers 6 is correspondingly set to four, and the four inner fillers 6 are all inserted in the area jointly surrounded by the four wire cores 2, and are evenly arranged along the circumferential direction. The cross-sectional shape of the inner filler 6 is a right-angled triangle, and the side surfaces where the two right-angled sides of the inner filler 6 are located are respectively abutted on the adjacent band surfaces at the two ends of the support member 5, and the side surfaces where the right-angled sides of the inner filler 6 are located are arc surfaces, and abut on the outer peripheral wall of the braided shielding protection integrated layer 4; the number of outer fillers 7 is correspondingly set to four, and the four outer fillers 7 are respectively arranged between the wire core 2 and the outer skin 1, and the outer filler 7 is an arc structure, and the cover is arranged on the sleeve portion 502.

[0047] During the process of assembling the braided shielded cable, the four cores 2 are first arranged in a square, and then the four inner fillers 6 are simultaneously inserted into the area surrounded by the four cores 2. Due to its strip structure, it can flexibly adapt to the irregular space between the cores 2, and is easy to operate, which can effectively improve the installation efficiency.

[0048] Then, the first support member 5 is sleeved on one of the wire cores 2 and moved axially to a suitable position. Then, the second support member 5 is rotated 90 degrees, sleeved on the next wire core 2, and moved axially to a suitable position. The process of rotating the support member 5 90 degrees, sleeved on the next wire core 2, and moved axially to a suitable position is repeated, so that all the support members 5 form a spiral arrangement.

[0049] Then four outer fillers 7 are respectively inserted between the sleeve portion 502 and the outer skin 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.

[0050] Furthermore, the inner filler 6 and the outer filler 7 can be configured as one of polyester filling rope, aramid filling rope, polyamide filling rope or hemp rope.

[0051] Specifically, the polyester filling rope has good flexibility and certain wear resistance, its chemical properties are stable, and it can maintain stable shape and performance in a variety of environments; using polyester filling rope as internal and external fillers 7 in the cable can effectively reduce the friction between the cores 2 and between the cores 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. Aramid filled rope, with its high strength, high modulus, and excellent high temperature and chemical corrosion resistance, performs excellently in some special occasions with extremely high requirements on cable performance, such as cable applications in high temperature, high pressure, and strong corrosive environments. It can significantly enhance the mechanical strength of the cable and improve the overall stability and service life of the cable; polyamide filled rope has good elastic recovery and fatigue resistance. It can always maintain a good filling effect when the cable is subjected to repeated bending, stretching and other external forces, and prevent the filler from deforming due to external forces and affecting the cable performance. It is often used in mobile device cables that require high flexibility and durability; hemp rope, as a natural fiber filling material, is low in cost and soft in texture. It can absorb moisture inside the cable to a certain extent, and its soft properties can effectively buffer the stress inside the cable. It is more common in some cost-sensitive cable applications with relatively mild environmental conditions.

[0052] In other embodiments, the material of the insulating layer 3 is one of polyurethane, polyvinyl chloride, and polypropylene.

[0053] 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, and has good elasticity. When the cable is subjected to external forces such as bending and stretching, it can still maintain a good insulation effect, and is not easy to crack or break. It is suitable for some cable scenes that require frequent movement or bending, 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 in a wide temperature range and has certain flame retardancy. It 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 high insulation resistance and good chemical corrosion resistance, and its dielectric constant is low, which can effectively reduce the loss in the signal transmission process, and is particularly suitable for fields such as high-frequency communication cables with high requirements for signal transmission quality; by reasonably selecting the material of the insulating layer 3, it is possible to provide reliable insulation protection for the core 2 according to the different usage scenarios and performance requirements of the cable to ensure the safe and stable operation of the cable.

[0054] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A braided shielded cable, characterized in that: The braided shielded cable includes 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. 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 respectively bypass the two sides of the core on the opposite side and support on the inner circumferential wall of the outer sheath, and the ends of adjacent support members are arranged to overlap in the circumferential direction.

2. The braided shielded cable according to claim 1, characterized in that: Both ends of the support member are provided with arc portions, and the arc portions and the outer skin are arranged concentrically.

3. 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.

4. The braided shielded cable according to claim 3, 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.

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

6. 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.

7. The braided shielded cable according to claim 6, 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.

8. The braided shielded cable according to claim 6, characterized in that: The inner filler and the outer filler are both in strip-shaped structures.

9. The braided shielded cable according to claim 8, 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.

10. 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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