Electromagnetic shielded kink-resistant cable

Abstract

The application discloses an anti-electromagnetic and anti-bending cable, which comprises a cable core and a sleeve, the sleeve is arranged on the outer ring of the cable core, the sleeve comprises protruding parts and connecting parts which are arranged alternately around the cable core, the protruding part protrudes in the radial direction of the cable core from two connecting parts connected with the protruding part and extends along the axial direction of the cable core. In the application, the protruding part changes the propagation path and propagation direction of electromagnetic waves by changing the geometric shape of the outer surface of the sleeve, reduces the possibility of the external electromagnetic field directly acting on the inside of the sleeve, that is, reduces the direct contact of electromagnetic waves, so that the shielding effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of electric power transmission technology, and more particularly to electromagnetic shielding and bending-resistant cables. Background Technology

[0002] In electrical or electronic systems, cables are primarily used to connect different systems and transmit energy and information. As the number of cables increases, the electromagnetic environment becomes increasingly complex, and external electromagnetic fields can easily cause electromagnetic interference to the cables, affecting their transport function. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide an electromagnetically shielded and bend-resistant cable that can reduce electromagnetic interference from external electromagnetic fields on the cable core.

[0004] The present invention provides an electromagnetic anti-bending cable including a cable core and a sleeve. The sleeve is used to fit around the outer ring of the cable core. The sleeve includes protrusions alternately arranged around the cable core and connecting portions for connecting two adjacent protrusions. The protrusions protrude from the two connecting portions connected to them in the radial direction of the cable core and extend along the axial direction of the cable core.

[0005] In some embodiments, the connecting portion is provided with a conductive metal strip; or, the protrusion is provided with a conductive metal strip; or, both the connecting portion and the protrusion are provided with conductive metal strips.

[0006] In some embodiments, the electromagnetic shielding and bending-resistant cable further includes a base portion; the base portion has a plurality of core holes for mounting the sleeve, and at least a portion of the protrusion abuts against the inner surface of the core holes.

[0007] In some embodiments, the protruding surface of the protrusion is constructed as an arc-shaped surface.

[0008] In some embodiments, the base portion has a plurality of buffer holes spaced apart in the circumferential direction, and each buffer hole extends in a direction parallel to the axial direction.

[0009] In some embodiments, a first electromagnetic shielding structure is provided between the cable core and the sleeve, and a second electromagnetic shielding structure is provided on the outer surface of the base.

[0010] In some embodiments, the first electromagnetic shielding structure includes a first insulating layer and an aluminum foil layer arranged sequentially from the inside to the outside, and the outer surface of the aluminum foil layer is provided with reinforcing ribs.

[0011] In some embodiments, a heat-resistant layer is further provided between the cable core and the sleeve, the heat-resistant layer being sleeved on the outside of the first electromagnetic shielding structure and attached to the inner surface of the sleeve.

[0012] In some embodiments, the second electromagnetic shielding structure includes a second insulating layer and a conductive coating layer arranged sequentially from the inside out; the conductive coating layer includes a flexible mesh covering the outer peripheral wall of the second insulating layer and a conductive coating sprayed onto the flexible mesh.

[0013] In some embodiments, the second electromagnetic shielding structure is covered with a flame-retardant layer, which is constructed as a corrugated pipe structure.

[0014] Based on the technical solution, it can be seen that the embodiments provided by the present invention have the following advantages: Compared with related technologies, the anti-electromagnetic and anti-bending cable provided by the embodiments of the present invention has the following advantages: (1) The sleeve structure with protrusions can play the role of shielding electromagnetic interference. This approach is mainly to reduce the influence of external electromagnetic fields on the inside of the sleeve by increasing the physical structural characteristics of the pipe. According to the principle of electrostatic shielding, the electromagnetic interference of external electromagnetic fields on the cable core is reduced by changing the shape of the object. Specifically, the protrusions change the geometric shape of the outer surface of the sleeve, change the propagation path and propagation direction of electromagnetic waves, reduce the possibility of external electromagnetic fields directly acting on the inside of the sleeve, that is, reduce the direct contact of electromagnetic waves, thereby achieving the shielding effect. (2) In the specific scenario of laying anti-electromagnetic and anti-bending cables, excessive bending of the anti-electromagnetic and anti-bending cables will cause the cable core in the anti-electromagnetic and anti-bending cables to break, thereby affecting the functions of power transmission and information transmission. Through the protrusions extending along the axial direction on the sleeve, the bending resistance of the anti-electromagnetic and anti-bending cable can be enhanced, thereby improving the protection capability of the cable core, which is conducive to avoiding damage to the cable core during the bending process of the entire anti-electromagnetic and anti-bending cable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the sleeve structure according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the assembled cable core and anti-electromagnetic and anti-bending cable according to an embodiment of the present invention;

[0018] Figure 3This is a schematic diagram of the structure of an anti-electromagnetic and anti-bending cable according to an embodiment of the present invention from one perspective;

[0019] Figure 4 This is a schematic diagram of the structure of an anti-electromagnetic and anti-bending cable according to an embodiment of the present invention from another perspective.

[0020] Figure label:

[0021] Electromagnetic shielding and bend-resistant cable 100;

[0022] Cable core 1;

[0023] Sleeve 2, protrusion 21, connecting part 22, conductive metal strip 23;

[0024] Base section 3, core hole 31, buffer hole 32;

[0025] First electromagnetic shielding structure 41, first insulating layer 411, aluminum foil layer 412, heat-resistant layer 42;

[0026] The second electromagnetic shielding structure 51, the second insulating layer 511, the conductive coating layer 512, the glass fiber layer 52, and the flame retardant layer 53. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "axial," "radial," "circumferential," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] The following is for reference. Figures 1-4 An electromagnetic insulated and bend-resistant cable 100 according to an embodiment of the present invention is described.

[0031] Example 1

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides an electromagnetic anti-bending cable 100, which includes a cable core 1 and a sleeve 2.

[0033] Cable core 1 is the core component of the electromagnetic shielding and bend-resistant cable 100, carrying the functions of power transmission and signal transmission. Structurally, cable core 1 extends along the axial direction, and the cross-section of cable core 1 perpendicular to the axial direction can be constructed as a circular cross-section.

[0034] The sleeve 2 is fitted around the outer ring of the cable core 1. In a specific example, the sleeve 2 extends along the axial direction of the cable core 1 to wrap around the cable core 1, which can protect the cable core 1 and improve the compactness of the entire electromagnetic anti-bending cable structure.

[0035] The sleeve 2 includes a protrusion 21 and a connecting portion 22, which are alternately arranged around the cable core 1. The connecting portion 22 is used to connect two adjacent protrusions 21.

[0036] In a cross-section perpendicular to the axis of cable core 1, the connecting portion 22 can be constructed as a line segment extending around cable core 1, that is, the connecting segment has a certain length (e.g., Figure 1 (as shown); or, on a cross section perpendicular to the axis of the cable core 1, the two protrusions 21 are directly connected, and the connecting part 22 is constructed as a connection point structure. For example, the two protrusions 21 are connected by welding, and the cross section of the entire sleeve 2 presents a petal-shaped structure.

[0037] On a cross-section perpendicular to the axis of the cable core 1, the protrusion 21 can also be constructed as a square wave, a trigonometric function shape, or a circular arc shape.

[0038] In related technologies, the sleeve adopts a circular tube structure, and its cross-section in the direction perpendicular to the axis is a closed circular cross-section. In this application, the sleeve 2 forms a closed area in the cross-section in the direction perpendicular to the axis, and each protrusion 21 protrudes from the two connecting parts 22 connected to it in the radial direction of the cable core 1, and each protrusion 21 extends along the axial direction of the cable core 1.

[0039] Compared with related technologies, the electromagnetic shielding and bend-resistant cable 100 provided in this embodiment of the invention has the following advantages: (1) The sleeve 2 structure with protrusions 21 can play the role of shielding electromagnetic interference. This approach is mainly to reduce the influence of external electromagnetic fields on the inside of the sleeve 2 by increasing the physical structural characteristics of the pipe. According to the principle of electrostatic shielding, the electromagnetic interference of external electromagnetic fields on the cable core 1 is reduced by changing the shape of the object. Specifically, the protrusions 21 change the geometric shape of the outer surface of the sleeve 2, change the propagation path and direction of electromagnetic waves, reduce the possibility of external electromagnetic fields directly acting on the inside of the sleeve 2, that is, reduce the direct contact of electromagnetic waves, thereby achieving the shielding effect. (2) In the specific scenario of laying the electromagnetic shielding and bend-resistant cable 100, excessive bending of the electromagnetic shielding and bend-resistant cable 100 will cause the cable core 1 in the electromagnetic shielding and bend-resistant cable 100 to break, thereby affecting the functions of power transmission and information transmission. The protrusion 21 extending along the axial direction on the sleeve 2 can enhance the bending resistance of the anti-electromagnetic and anti-bending cable 100, thereby improving the protection of the cable core 1 and helping to prevent the cable core 1 from being damaged during the bending process of the entire anti-electromagnetic and anti-bending cable 100.

[0040] In some preferred embodiments, the sleeve 2 may be made of a bend-resistant plastic material.

[0041] like Figure 1 and Figure 2 As shown, furthermore, multiple protrusions 21 and multiple connecting portions 22 are equally spaced on the outer ring of the cable core 1, which can improve the uniformity of the sleeve 2 structure.

[0042] like Figure 1 and Figure 2 As shown, in some optional embodiments, the connecting part 22 is provided with a conductive metal strip 23. By providing the conductive metal strip 23, the electromagnetic shielding effect of the sleeve 2 can be further enhanced, and the electromagnetic interference of the external electromagnetic field on the cable core 1 can be further reduced.

[0043] like Figure 1 and Figure 2 As shown, in some optional embodiments, the protrusion 21 is provided with a conductive metal strip 23. By providing the conductive metal strip 23, the electromagnetic shielding effect of the sleeve 2 can be enhanced, and the electromagnetic interference of the external electromagnetic field on the cable core 1 can be further reduced.

[0044] like Figure 1 and Figure 2 As shown, in some optional embodiments, both the connecting part 22 and the protrusion 21 are provided with conductive metal strips 23. By providing conductive metal strips 23, the electromagnetic shielding effect of the sleeve 2 can be enhanced, and the electromagnetic interference of external electromagnetic fields on the cable core 1 can be further reduced.

[0045] Example 2

[0046] like Figure 3 As shown, this embodiment is basically the same as Embodiment 1, except that the electromagnetic anti-bending cable 100 also includes a base part 3. The base part 3 has multiple core holes 31 for installing the sleeve 2. At least a portion of the protruding surface of the protrusion 21 abuts against the inner surface of the core hole 31. After the cable core 1 and the sleeve 2 are assembled, they are installed into the core hole 31 of the base part 3. The protruding surface of the protrusion 21 at least partially abuts against the inner surface of the core hole 31, allowing the core hole 31 to press tightly against the sleeve 2, improving the stability and reliability of the connection between the sleeve 2 and the core hole 31, thereby maintaining the stability of the cable core 1's power transmission and information transmission functions. In a specific application, the electromagnetic anti-bending cable 100 includes a base part 3 with multiple core holes 31, multiple cable cores 1, and multiple sleeves 2. The sleeve 2 is fitted over the cable core 1 and then installed into the core hole 31 of the base part 3. The sleeve 2 can shield against interference from external electromagnetic fields of the electromagnetic anti-bending cable 100, and also shield against electromagnetic field interference between different cable cores 1.

[0047] like Figure 3 As shown, further, the base portion 3 has multiple core holes 31, each core hole 31 being equally spaced around the outer periphery of the base portion 3's axis, which is parallel to the axis of the cable core 1. A sleeve 2 located within the core hole 31 is fitted onto the outer periphery of the cable core 1. In a cross-section perpendicular to the axis of the cable core 1, the cross-sectional structure of the core hole 31 matches the cross-sectional structure of the sleeve 2. This matching means that the sleeve 2 and the core hole 31 are interference-fitted, allowing the sleeve 2 to be installed within the core hole 31, and at least a portion of the protrusion 21 abuts against the inner surface of the core hole 31.

[0048] In some preferred examples, the base section 3 is made of flexible refractory oxygen-barrier mud insulation material.

[0049] like Figure 1 As shown, the protruding surface of the protrusion 21 is further constructed as an arc-shaped surface, which is beneficial for pressing the sleeve 2 into the inner wall surface of the core hole 31. The arc-shaped surface is beneficial for the sleeve 2 to automatically adjust to a balanced and stable position in the core hole 31, thereby improving the stability and reliability of the sleeve 2 installed in the core hole 31.

[0050] like Figure 1As shown, optionally, the connecting portion 22 can also be constructed as an arc-shaped surface. That is, in the cross-section perpendicular to the axis of the cable core 1, the cross-sectional structure of the connecting portion 22 is arc-shaped and arches towards the side away from the cable core 1, thereby enhancing the bending capacity of the sleeve 2 and better protecting the cable core 1. Furthermore, all the connecting portions 22 are located on the same ring.

[0051] like Figure 1 As shown, preferably, the cross-sectional structure of the connecting part 22 can be arc-shaped and arched towards the side of the cable core 1, and the cross-sectional structure of the sleeve 2 is a closed wave-shaped structure.

[0052] like Figure 3 As shown, the base part 3 is further provided with a plurality of buffer holes 32 at intervals, each buffer hole 32 extending along the axial direction. By providing buffer holes 32, its elastic deformation capacity is further improved, and the external force on the anti-electromagnetic and anti-bending cable 100 is fully buffered to avoid damage to the cable core 1. More importantly, by providing the base part 3 and the buffer holes 32 inside it, the bending capacity of the entire anti-electromagnetic and anti-bending cable 100 is enhanced, so that it can fully adapt to different working conditions. In conjunction with the sleeve 2, damage to the cable core 1 is avoided during bending, thereby improving the deformation resistance of the entire anti-electromagnetic and anti-bending cable 100 during use and extending the service life of the entire anti-electromagnetic and anti-bending cable 100.

[0053] like Figure 1 As shown, preferably, one or more buffer holes 32 are arranged in a ring array around the axis of the base part 3. For example, two buffer holes 32 form a group of source objects, and the group of source objects are arranged in a ring array on the base part 3 with the axis of the base part 3 as the polar axis.

[0054] Example 3

[0055] like Figure 2 and Figure 3 As shown, this embodiment is basically the same as the first embodiment, except that: a first electromagnetic shielding structure 41 is provided between the cable core 1 and the sleeve 2, and a second electromagnetic shielding structure 51 is provided on the outer surface of the base part 3.

[0056] This embodiment provides dual protection for the anti-electromagnetic and anti-bending cable 100 by setting a first electromagnetic shielding structure 41 and a second electromagnetic shielding structure 51, thereby improving the anti-electromagnetic interference capability of the anti-electromagnetic and anti-bending cable 100 and further enhancing the functional stability of the anti-electromagnetic and anti-bending cable 100 in transporting power and signals.

[0057] like Figure 2 and Figure 3As shown, specifically, the first electromagnetic shielding structure 41 includes a first insulating layer 411 and an aluminum foil layer 412 arranged sequentially from the inside out. The outer surface of the aluminum foil layer 412 is provided with reinforcing ribs. That is, the outer periphery of the cable core 1 is wrapped with the first insulating layer 411, which is located on the inner periphery of the sleeve 2, serving to insulate the cable core 1. The first insulating layer 411 can be made of a relatively soft insulating material, capable of undergoing certain deformation to adapt to the bending of the electromagnetic shielding and bending-resistant cable 100. For example, the first insulating layer 411 can be made of cross-linked polyethylene insulating material. The aluminum foil layer 412 is disposed between the first insulating layer 411 and the inner wall of the sleeve 2, wrapping around the outer ring of the first insulating layer 411. By setting the aluminum foil layer 412, electromagnetic interference can be effectively counteracted, further improving the anti-interference capability of the cable core 1. The outer surface of the aluminum foil layer is fixedly connected with reinforcing ribs. The reinforcing ribs are used to improve the connection strength between the aluminum foil layer 412 and the heat-resistant layer 42. The reinforcing ribs can also improve the tensile strength of the entire anti-electromagnetic and anti-bending cable 100, thereby extending the service life of the entire anti-electromagnetic and anti-bending cable 100.

[0058] like Figure 2 and Figure 3 As shown, a heat-resistant layer 42 is further provided between the cable core 1 and the sleeve 2. The heat-resistant layer 42 is sleeved on the outside of the first electromagnetic shielding structure 41 and adheres to the inner surface of the sleeve 2. A heat-resistant layer 42 is provided between the aluminum foil layer 412 and the inner wall of the sleeve 2. The heat-resistant layer 42 wraps around the outer peripheral wall of the aluminum foil layer 412, and the structure of the outer peripheral wall of the heat-resistant layer 42 matches the structure of the inner peripheral wall of the sleeve 2. The heat-resistant layer 42 effectively isolates the heat transfer between the aluminum foil layer 412 and the sleeve 2, which not only provides heat insulation for the entire electromagnetic anti-bending cable 100, but also reduces the impact of heat transfer on the sleeve 2, thus preventing the bending resistance of the sleeve 2 from being affected. Preferably, the heat-resistant layer 42 is made of a relatively soft insulating material, which can produce a certain deformation to adapt to the bending of the cable core 1.

[0059] like Figure 3 As shown, the second electromagnetic shielding structure 51 further includes a second insulating layer 511 and a conductive coating layer 512 arranged sequentially from the inside to the outside; the conductive coating layer 512 includes a flexible mesh covering the outer peripheral wall of the second insulating layer 511 and a conductive coating sprayed on the flexible mesh.

[0060] like Figure 3As shown, the second insulating layer 511 is sleeved on the outer periphery of the base portion 3. Multiple sets of interlocking recesses and protrusions are arranged in a ring array between the inner peripheral wall of the second insulating layer 511 and the outer peripheral wall of the base portion 3. The second insulating layer 511 is used to insulate the entire base portion 3. Preferably, the second insulating layer 511 can be made of a relatively soft insulating material, capable of undergoing a certain degree of deformation to adapt to the bending of the cable core 1. For example, the second insulating layer 511 can be made of cross-linked polyethylene insulating material.

[0061] One of the second insulating layer 511 and the base portion 3 has a protrusion, and the other has a recess. The protrusion and recess are fitted together to improve the connection strength between the two. Multiple sets of fitted recesses and protrusions are arranged in a ring array between the inner peripheral wall of the second insulating layer 511 and the outer peripheral wall of the base portion 3.

[0062] like Figure 3 As shown, a conductive coating layer 512 is fitted onto the outer periphery of the second insulation layer 511. The conductive coating layer 512 includes a flexible mesh covering the outer periphery of the second insulation layer 511. The flexible mesh is sprayed with conductive coating to improve the electromagnetic wave shielding performance of the entire electromagnetic shielding and bending-resistant cable 100. Preferably, the conductive coating is conductive paint, which uses composite microparticles containing copper, silver, etc., as conductive particles, possessing good conductivity. Conductive paint is made by adding conductive metal powder to specific resin raw materials to create a sprayable paint coating. After drying, it forms a paint film that conducts electricity, thereby achieving the function of shielding electromagnetic interference. Furthermore, by setting up the flexible mesh, the strength of the conductive coating adhering to the outer periphery of the second insulation layer 511 can be effectively improved, effectively preventing phenomena such as peeling off during the bending process of the electromagnetic shielding and bending-resistant cable 100.

[0063] like Figure 4 As shown, the second electromagnetic shielding structure 51 is further covered with a flame-retardant layer 53, which has a corrugated structure. Preferably, the flame-retardant layer 53 is made of flame-retardant polyvinyl chloride, which prevents external open flames from damaging the electromagnetic shielding and bending-resistant cable 100. The flame-retardant layer 53 has a corrugated structure, which, combined with the flexibility of the base part 3, facilitates the bending of the entire electromagnetic shielding and bending-resistant cable 100, thereby improving the overall applicability of the electromagnetic shielding and bending-resistant cable 100.

[0064] like Figure 3As shown, in some embodiments, a waterproof layer and a fiberglass layer 52 are sequentially fitted onto the outer peripheral wall of the conductive coating layer 512 from the inside out. The waterproof layer is provided to effectively prevent the entire anti-electromagnetic and anti-bending cable 100 from being eroded by external rainwater. The waterproof layer adopts a water-blocking tape structure and is wrapped around the outer peripheral wall of the conductive coating layer 512. A fiberglass layer 52 is provided between the waterproof layer and the flame-retardant layer 53. By providing the fiberglass layer 52 and reinforcing ribs, the hardness and tensile strength of the entire anti-electromagnetic and anti-bending cable 100 are improved, which can extend the service life of the entire anti-electromagnetic and anti-bending cable 100.

[0065] Other configurations and operations of the electromagnetic shielding and bending-resistant cable 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. In the description of the present invention, "first feature" and "second feature" may include one or more of the features. The vertical, horizontal, and front-back directions are defined as shown in the figures.

[0066] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electromagnetic insulated and bend-resistant cable, comprising a cable core and a sleeve, wherein the sleeve is fitted over the outer ring of the cable core, characterized in that: The sleeve includes alternating protrusions around the cable core and connecting portions for connecting two adjacent protrusions. The protrusions extend radially out of the two connecting portions connected to them and extend along the axial direction of the cable core. The connecting part is provided with a conductive metal strip; Alternatively, a conductive metal strip may be provided on the protrusion; Alternatively, both the connecting portion and the protrusion are provided with conductive metal strips; The electromagnetic shielding and bending-resistant cable also includes a base section; The base portion has multiple core holes for installing the sleeve, and at least a portion of the protrusion abuts against the inner surface of the core holes. A first electromagnetic shielding structure is provided between the cable core and the sleeve, and a second electromagnetic shielding structure is provided on the outer surface of the base. The first electromagnetic shielding structure includes a first insulating layer and an aluminum foil layer arranged sequentially from the inside to the outside, and the outer surface of the aluminum foil layer is provided with reinforcing ribs.

2. The electromagnetic shielding and bend-resistant cable according to claim 1, characterized in that, The protruding surface of the protrusion is an arc-shaped surface.

3. The electromagnetic shielding and bend-resistant cable according to claim 1, characterized in that, The base has a plurality of buffer holes spaced apart in the circumferential direction, and each buffer hole extends in a direction parallel to the axis.

4. The electromagnetic shielding and bend-resistant cable according to claim 1, characterized in that, A heat-resistant layer is also provided between the cable core and the sleeve. The heat-resistant layer is sleeved on the outside of the first electromagnetic shielding structure and attached to the inner surface of the sleeve.

5. The electromagnetic shielding and bend-resistant cable according to claim 3, characterized in that, The second electromagnetic shielding structure includes a second insulating layer and a conductive coating layer arranged sequentially from the inside to the outside; the conductive coating layer includes a flexible mesh covering the outer peripheral wall of the second insulating layer and a conductive coating sprayed on the flexible mesh.

6. The electromagnetic shielding and bend-resistant cable according to claim 5, characterized in that, The second electromagnetic shielding structure is covered with a flame-retardant layer, which is constructed as a corrugated pipe structure.

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