Anti-electromagnetic interference control cable

Abstract

The invention relates to the technical field of cables, and provides an anti-electromagnetic interference control cable, which comprises a group of wire cores, a wrapping layer wrapped outside the group of wire cores, a first shielding layer wrapped outside the wrapping layer, an outer sheath wrapped outside the first shielding layer, a filling layer, a butt joint sleeve, a butt joint assembly, an electromagnetic shielding assembly and a thermal shrinkable sleeve, a filling layer is arranged outside one group of wire cores, a wrapping layer is coated outside the filling layer, butt joint sleeves are detachably mounted at two ends of each wire core, a butt joint assembly is fixedly mounted between each group of adjacent wire cores, an electromagnetic shielding assembly is mounted on each butt joint assembly, and a thermal shrinkable sleeve is fixedly mounted between two opposite outer sheaths. The cable solves the problem that the anti-electromagnetic interference capability of the cable is reduced due to the fact that the joint of the cable is prone to electromagnetic interference and electromagnetic leakage caused by the lack of good shielding and insulation protection in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to an electromagnetic interference protection control cable. Background Art

[0002] Cable is a conductor used to transmit electronic signals or energy. It is usually composed of soft insulating materials (such as polyethylene, fluoroplastics, etc.) and conductive cores. The cores are generally made of copper, aluminum or other metals. The main function of the cable is to transmit electrical energy from one place to another, such as power sockets in buildings to electrical equipment, industrial production lines, etc.

[0003] The electromagnetic field strength is usually large near facilities such as radar stations and communication base stations, or near power lines, especially near high-voltage power lines. In addition, high-power radio transmitters or receivers will generate large electromagnetic fields when transmitting and receiving high-power signals, as well as electrical appliances such as microwave ovens during use. In such an environment where there may be relatively strong electromagnetic fields, or the cable design is unreasonable, such as insufficient number of wire cores or poor arrangement, this may lead to electromagnetic induction and electromagnetic wave reflection, thereby causing electromagnetic interference.

[0004] Electromagnetic interference is a type of electronic noise that interferes with cable signals and reduces signal integrity. It can cause the quality of the cable output signal to deteriorate, become distorted or damaged. At the same time, temperature changes, humidity changes, vibrations, impacts, etc. may cause changes in the material properties of the cable, making the cable susceptible to electromagnetic interference, thereby affecting its transmission performance. In order to ensure signal integrity, improve system reliability, reduce the risk of equipment misoperation or failure due to electromagnetic interference from the cable, thereby affecting production efficiency and product quality, and reduce the control of electromagnetic interference on the cable, the cable is generally placed as far away from the electromagnetic source as possible, or a metal sheath layer is set on the outside of the cable to suppress the impact of external electromagnetic radiation.

[0005] When two cables are connected together, the irregularity and looseness of the contact surface at the connection point can easily lead to an increase in contact resistance, thereby reducing the speed and quality of signal transmission, and also increasing the possibility of electromagnetic interference. Since the connection point is usually the weakest point between cables and lacks good shielding and insulation protection, electromagnetic leakage and radiation often occur at the connection point, making it easier for external electromagnetic fields to penetrate into the connection point, thereby reducing the connection point's ability to resist electromagnetic interference, reducing the cable's ability to block external electromagnetic fields, and greatly increasing the risk of the cable being subject to electromagnetic interference. Summary of the invention

[0006] The present invention provides an anti-electromagnetic interference control cable, which solves the problem in the prior art that the cable connection usually lacks good shielding and insulation protection, resulting in the connection being susceptible to electromagnetic interference and electromagnetic leakage, which reduces the cable's anti-electromagnetic interference capability.

[0007] The technical solution of the present invention is as follows: An electromagnetic interference protection control cable comprises a group of wire cores, wherein the outer surface of the group of wire cores is coated with a wrapping layer, the outer surface of the wrapping layer is coated with a first shielding layer, the outer surface of the first shielding layer is coated with an outer sheath, and further comprises: A filling layer, wherein the filling layer is disposed outside a group of the wire cores, and the filling layer is coated with the wrapping layer outside, and is used to fill the gap between a group of the wire cores and the wrapping layer; Butt joint sleeves, both ends of each of the wire cores are detachably mounted with the butt joint sleeves; A docking assembly is fixedly installed between each group of adjacent wire cores to connect the wire cores; An electromagnetic shielding component, which is installed on the docking component and is used to shield electromagnetic interference; A heat shrink sleeve is fixedly installed between the two opposite outer sheaths.

[0008] On the basis of the above scheme, the line core comprises: A twisted conductor, wherein a plurality of twisted conductors are provided; Conductor insulation layer, each of the stranded conductors is coated with a conductor insulation layer. A second shielding layer, each of the conductor insulation layers is coated with a second shielding layer; An isolation sleeve, each of the second shielding layers is covered with an isolation sleeve.

[0009] Based on the above solution, the filling layer includes: A central filling layer, which is disposed between the plurality of isolation sleeves and abuts against the isolation sleeves; A side gap filling layer, wherein the side gap filling layer is disposed between each two adjacent isolation sleeves, the side gap filling layer abuts against the isolation sleeves, and the side gap filling layer abuts against the wrapping layer; A square groove, wherein each of the side gap filling layers has a square groove in the middle; Side grooves, both sides of the square grooves in each of the side gap filling layers are provided with side grooves; Wherein, the side groove of each of the side gap filling layers is also provided with the side groove on one side close to the central filling layer.

[0010] In addition to the above solutions, it also includes: A filling bar, each of the square grooves and the side grooves is fixedly installed with the filling bar; An anti-bending groove is provided at the center of the central filling layer; Wherein, the side surfaces of the anti-bending grooves are all arc-shaped with the bending direction facing the axial position of the outer sheath.

[0011] On the basis of the above solution, the docking assembly includes: A wiring sleeve, wherein the wiring sleeve is fixedly installed between the two opposite twisted conductors; Wherein, the butt joint sleeve is slidably matched with the conductor insulation layer, and the butt joint sleeve is made of metal; Arc-shaped annular grooves, both ends of each docking sleeve are provided with the arc-shaped annular grooves; A fixing part is installed on the butt joint sleeve and is used to fix the position of the butt joint sleeve on the conductor insulation layer.

[0012] On the basis of the above solution, the fixing part comprises: A positioning ring groove, wherein one end of each conductor insulation layer that cooperates with the docking sleeve is provided with the positioning ring groove; Installation grooves, each of the docking sleeves has two installation grooves symmetrically arranged inside; A spring sheet is fixedly installed inside each of the installation grooves, and the spring sheet is adapted to the positioning ring groove.

[0013] On the basis of the above scheme, the electromagnetic shielding assembly comprises: Mounting frames, two mounting frames are arranged on the arc-shaped annular groove on each of the docking sleeves, and the two mounting frames are detachably connected by a first bolt; A third shielding layer, wherein each mounting frame is provided with the third shielding layer inside, and the third shielding layer abuts against the docking sleeve and the second shielding layer; An arc-shaped bar, wherein each of the third shielding layers is fixedly provided with the arc-shaped bar, and the arc-shaped bar is adapted to the arc-shaped annular groove; A docking shielding portion is mounted on the docking sleeve and is used to shield electromagnetic interference between the wire and the wiring sleeve.

[0014] On the basis of the above solution, the docking shielding part comprises: Sub-docking frame, in the docking sleeves at both ends of each wiring sleeve, the sub-docking frame is symmetrically arranged on one of the docking sleeves; A female docking frame, wherein the docking sleeves at both ends of each wiring sleeve and the other docking sleeve are symmetrically provided with the female docking frame, and the front end of the sub-dock frame is located between the female docking frame and the wiring sleeve; Wherein, every two symmetrical sub-docking frames and two symmetrical female docking frames are detachably connected via a second bolt; A docking shielding layer, wherein each of the sub-docking frames and the mother-docking frame is fixedly installed with the docking shielding layer; Wherein, the docking shielding layer on the mother docking frame is in sliding contact with the front end of the child docking frame.

[0015] In addition to the above solutions, it also includes: Connecting ears, each of the sub-docking frames and the mother-docking frame is symmetrically and fixedly mounted with the connecting ears; The third bolt is detachably mounted between the connecting ears on the sub-docking frame and the connecting ears on the mother-docking frame.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, the first shielding layer is between the outer sheath and the wrapping layer, and the second shielding layer is between the conductor insulation layer and the isolation sleeve, thereby reducing the possibility of damage to the first shielding layer and the second shielding layer due to external forces such as mechanical damage, extrusion or shearing during the laying process, thereby ensuring that the twisted cable has good shielding performance.

[0017] 2. In the present invention, an anti-bending groove is provided inside the central filling layer, and the side wall of the anti-bending groove is an arc-shaped surface. At the same time, through the cooperation of the square groove on the side gap filling layer, when the cable must be bent, the influence of concentrated stress on the conductor insulation layer can be reduced, the possibility of damage to the first shielding layer and the second shielding layer is reduced, the ability to resist electromagnetic interference is improved, and the weight of the cable itself is reduced.

[0018] 3. In the present invention, the central filling layer and the side gap filling layer on both sides of the wiring sleeve extend out of the wrapping layer for a certain distance, and this part is fastened with a binding tape, thereby reducing the problem that the wire stripping position is susceptible to bending during the laying process, and further improving the anti-electromagnetic interference performance.

[0019] 4. In the present invention, the two mounting frames are moved to the mounting position, and the arc-shaped strips on the mounting frames cooperate with the arc-shaped annular grooves. Then, the two mounting frames are butt-jointed together by setting the first bolts. At this time, the third shielding layer on the mounting frame abuts against the corresponding second shielding layer and abuts against the docking sleeve, thereby achieving the effect of preventing electromagnetic interference.

[0020] 5. In the present invention, two sub-docking frames are installed in the docking sleeves at both ends of the wiring sleeve, on one of the docking sleeves, and the position of the sub-docking frame is fixed by the second bolt, and then the mother docking frame is installed on the other corresponding docking sleeve through the same steps. At this time, the docking shielding layer on the mother docking frame slides and abuts against the front end of the sub-docking frame, so that the docking shielding layer on the mother docking frame overlaps with the docking shielding layer on the sub-docking frame. At this time, the connecting ear on the sub-docking frame is made to correspond to the connecting ear on the mother docking frame, and the two are connected by the setting of the third bolt. In this process, the relative position of the sub-docking frame and the mother docking frame can be adjusted by the third bolt and the connecting ear, which improves the installation speed. Since one end of the docking shielding layer overlaps with the docking sleeve, the anti-electromagnetic interference performance of the wiring sleeve position at the connection is improved.

[0021] 6. In the present invention, through the design of the filling layer, not only the possibility of bending during cable laying can be reduced, but also the concentrated stress generated at the bending point when the cable is bent can be dispersed, thereby improving the quality of the first shielding layer and the second shielding layer, and reducing the occurrence of wrinkles in the first shielding layer and the second shielding layer. Through the setting of the docking assembly and the electromagnetic shielding assembly, the two cables can be docked quickly and conveniently, and the anti-electromagnetic interference performance of the docking point of the two cables is improved, thereby improving the quality of the docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the cooperation between the wire core and the filling layer in the present invention; Figure 3 It is a structural schematic diagram of the filling layer in the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the cooperation between the docking assembly and the electromagnetic shielding assembly in the present invention; Figure 5 It is a cross-sectional structural schematic diagram of the cooperation between the docking assembly and the fixing part in the present invention; Figure 6 It is a structural schematic diagram of the fixing part in the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the docking assembly in the present invention; Figure 8 It is a cross-sectional structural schematic diagram of the cooperation between the shielding assembly and the fixing part of the present invention; Fig. 9 It is a schematic cross-sectional structural diagram of the electromagnetic shielding assembly in the present invention; Fig.10 For the present invention Fig. 9Schematic diagram of the local enlarged structure at point A in the middle.

[0024] In the figure: 1. wrapping layer; 2. first shielding layer; 3. outer sheath; 4. docking sleeve; 5. heat shrink sleeve; 6. twisted conductor; 7. conductor insulation layer; 8. second shielding layer; 9. isolation sleeve; 10. center filling layer; 11. side gap filling layer; 12. square groove; 13. side groove; 14. filling strip; 15. anti-bending groove; 16. wiring sleeve; 17. arc ring groove; 18. positioning ring groove; 19. installation groove; 20. spring sheet; 21. installation frame; 22. first bolt; 23. third shielding layer; 24. arc strip; 25. sub-docking frame; 26. mother docking frame; 27. second bolt; 28. docking shielding layer; 29. ​​connecting ear; 30. third bolt; 31. binding tape. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 10 As shown, this embodiment proposes an anti-electromagnetic interference control cable, including a group of cores, one group of cores is coated with a wrapping layer 1 on the outside, the wrapping layer 1 is coated with a first shielding layer 2 on the outside, the first shielding layer 2 is coated with an outer sheath 3 on the outside, and also includes a filling layer, a docking sleeve 4, a docking assembly, an electromagnetic shielding assembly and a heat shrink sleeve 5. The core includes a twisted conductor 6, a conductor insulation layer 7, a second shielding layer 8 and an isolation sleeve 9. A plurality of twisted conductors 6 are provided, each twisted conductor 6 is coated with a conductor insulation layer 7 on the outside, each conductor insulation layer 7 is coated with a second shielding layer 8 on the outside, and each second shielding layer 8 is coated with an isolation sleeve 9 on the outside.

[0027] Specifically, the cable is easily affected by electromagnetic interference during use. The electromagnetic waves generated by interference sources such as computers, communication equipment, and household appliances will pass through the air, walls, floors, etc., enter the cable, and interfere with the transmission of cable signals. The setting of the first shielding layer 2 can prevent external electromagnetic waves from interfering with the normal use of the cable. Since the core includes multiple twisted conductors 6, electromagnetic interference may also exist between the multiple twisted conductors 6. Since the flow of current in the twisted conductors will generate a magnetic field, and the currents passing through different twisted conductors 6 may be different, it will cause differences in the magnetic field distribution between different twisted conductors 6, thereby causing electromagnetic interference. In order to reduce the number of conductors in the same cable, The electromagnetic interference between the twisted conductors 6 can be reduced by setting the second shielding layer 8, and the possibility of electromagnetic interference between multiple twisted conductors 6 can be reduced. The first shielding layer 2 is between the outer sheath 3 and the winding layer 1, and the second shielding layer 8 is between the conductor insulation layer 7 and the isolation sleeve 9, thereby reducing the possibility of mechanical damage, extrusion or shearing and other external forces that may cause damage to the first shielding layer 2 and the second shielding layer 8 during the laying process, thereby ensuring that the twisted cable has good shielding performance. Through the setting of the docking component, the two cables can be conveniently docked together, and through the setting of the electromagnetic shielding component, the possibility of the docking position of the cable being affected by electromagnetic interference can be reduced, thereby improving stability.

[0028] like Figure 2 , Figure 3 As shown, a group of wire cores are provided with a filling layer on the outside, and the filling layer is coated with a wrapping layer 1 on the outside, which is used to fill the gap between a group of wire cores and the wrapping layer 1, and the filling layer includes a central filling layer 10, a side gap filling layer 11, a square groove 12 and a side groove 13, and a central filling layer 10 is provided between multiple isolation sleeves 9, and the central filling layer 10 is abutted against the isolation sleeve 9, and a side gap filling layer 11 is provided between each adjacent isolation sleeve 9, and the side gap filling layer 11 is abutted against the isolation sleeve 9, and the side gap filling layer 11 is abutted against the wrapping layer 1, and each side gap filling layer A square groove 12 is opened in the middle of the filling layer 11, and side grooves 13 are opened on both sides of the square groove 12 in each side gap filling layer 11, wherein the side of the square groove 12 in each side gap filling layer 11 close to the central filling layer 10 is also opened with a side groove 13, and also includes a filling strip 14 and an anti-bending groove 15, and a filling strip 14 is fixedly installed in each square groove 12 and the side groove 13, and an anti-bending groove 15 is opened at the center of the central filling layer 10, wherein the side surfaces of the anti-bending groove 15 are arc-shaped with the bending direction facing the axial position of the outer sheath 3.

[0029] Specifically, during the cable laying process, when the cable is excessively bent, compression is generated between the multiple isolation sleeves 9, resulting in poor contact or short circuit of the twisted conductor 6, affecting the transmission performance. In addition, excessive bending may also cause damage to the conductor insulation layer 7, further affecting the electrical performance. At the same time, the internal first shielding layer 2 and the second shielding layer 8 will also be affected, causing them to have wrinkles, breakage and other problems, affecting the ability to block the external electromagnetic field, thereby increasing the risk of electromagnetic interference. Through the setting of the central filling layer 10, since the anti-bending groove 15 is opened inside the central filling layer 10, and the side wall of the anti-bending groove 15 is an arc-shaped surface, and at the same time, through the cooperation of the square groove 12 on the side gap filling layer 11, when the cable must be bent, the conductor insulation layer 7 can be reduced. The influence of concentrated stress, the possibility of damage to the first shielding layer 2 and the second shielding layer 8 is reduced, the ability to resist electromagnetic interference is improved, and the weight of the cable itself is reduced.

[0030] like Figures 5 to 8 As shown, a docking sleeve 4 is detachably installed at both ends of each wire core, a docking assembly is fixedly installed between each group of adjacent wire cores for connecting the wire cores, the docking assembly includes a wiring sleeve 16, an arcuate annular groove 17 and a fixing portion, a wiring sleeve 16 is fixedly installed between two opposing twisted conductors 6, wherein the docking sleeve 4 is slidably matched with the conductor insulation layer 7, the docking sleeve 4 is made of metal, and an arcuate annular groove 17 is provided at both ends of each docking sleeve 4, and the fixing portion is installed on the docking sleeve 4 for fixing the position of the docking sleeve 4 on the conductor insulation layer 7.

[0031] Specifically, when laying cables, in order to connect different devices or systems, improve the reliability and maintainability of the system, and simplify the complexity of cable wiring, two cables can be connected. When connecting the two cables, first place the two together, and then strip the conductor insulation layer 7, the second shielding layer 8 and the isolation sleeve 9. At this time, an arc-shaped annular groove 17 is opened at the butt end of the conductor insulation layer 7, and the two sides of the butt end of the conductor insulation layer 7 are processed into a plane structure, and then the corresponding butt sleeve 4 is slidably sleeved on the corresponding conductor insulation layer 7. The plane structure on both sides of the butt end can prevent the butt sleeve 4 from rotating on the conductor insulation layer 7. At this time, the twisted conductor 6 is outside the conductor insulation layer 7, and then the twisted conductors 6 on the two cables are respectively inserted into the corresponding wiring sleeves 16, and the wiring sleeves 16 are crimped onto the corresponding twisted conductors 6 using tools such as wire crimping pliers to complete the connection, and then repeat this step until the multiple twisted conductors 6 in the two cables are connected.

[0032] It should be added that the central filling layer 10 and the side gap filling layer 11 on both sides of the wiring sleeve 16 extend out of the wrapping layer 1 for a distance, and this part is fastened with a binding tape 31, thereby reducing the problem of the stripping position being susceptible to bending during the laying process, and further improving the anti-electromagnetic interference performance.

[0033] The above, such as Figure 8 As shown, the fixing portion includes a positioning ring groove 18, a mounting groove 19 and a spring sheet 20. A positioning ring groove 18 is provided at one end of each conductor insulation layer 7 that cooperates with the docking sleeve 4. Two mounting grooves 19 are symmetrically provided inside each docking sleeve 4. A spring sheet 20 is fixedly installed inside each mounting groove 19, and the spring sheet 20 is adapted to the positioning ring groove 18.

[0034] Specifically, when the docking sleeve 4 is pushed to move on the conductor insulation layer 7, the spring sheet 20 is in contact with the conductor insulation layer 7. The spring sheet 20 adopts a V-shaped structure. At this time, the spring sheet 20 is in a compressed state. When the position of the mounting groove 19 exceeds the arc-shaped annular groove 17, the docking sleeve 4 can be pushed to slide in the opposite direction until the spring sheet 20 releases the pressure. The free end of the spring sheet 20 is in contact with the arc-shaped annular groove 17, thereby fixing the position of the docking sleeve 4.

[0035] like Figure 8 As shown, an electromagnetic shielding component is installed on the docking component for shielding electromagnetic interference. A heat shrink sleeve 5 is fixedly installed between two relative outer sheaths 3. The electromagnetic shielding component includes a mounting frame 21, a third shielding layer 23, an arc strip 24 and a docking shielding part. Two mounting frames 21 are provided on the arc-shaped annular groove 17 on each docking sleeve 4. The two mounting frames 21 are detachably connected by a first bolt 22. A third shielding layer 23 is installed inside each mounting frame 21. The third shielding layer 23 abuts against the docking sleeve 4 and the second shielding layer 8. An arc strip 24 is fixedly installed inside each third shielding layer 23. The arc strip 24 is adapted to the arc-shaped annular groove 17. The docking shielding part is installed on the docking sleeve 4 for shielding electromagnetic interference between the wire and the wiring sleeve 16.

[0036] Specifically, since the connection is usually the weakest point between the twisted conductors 6 and the twisted conductors 6, there is a lack of good shielding and insulation protection. Therefore, electromagnetic leakage and radiation often occur at the connection, making it easier for the external electromagnetic field to penetrate into the connection, thereby reducing the anti-electromagnetic interference ability of the connection. In order to improve the anti-electromagnetic interference of the docking position, after fixing the position of the docking sleeve 4, the two mounting frames 21 are moved to the installation position. At this time, the arc strip 24 on the mounting frame 21 cooperates with the arc annular groove 17, and then the two mounting frames 21 are docked together through the setting of the first bolt 22. At this time, the third shielding layer 23 on the mounting frame 21 abuts against the corresponding second shielding layer 8, and at the same time abuts against the docking sleeve 4, so that the effect of preventing electromagnetic interference can be achieved. Through the setting of the docking shielding part, the anti-electromagnetic interference ability of the docking position of the two twisted conductors 6 is further improved.

[0037] The above, such as Fig. 9 As shown, the docking shielding part includes a sub-docking frame 25, a female docking frame 26 and a docking shielding layer 28. In the docking sleeves 4 at both ends of each wiring sleeve 16, one of the docking sleeves 4 is symmetrically provided with a sub-docking frame 25, and in the docking sleeves 4 at both ends of each wiring sleeve 16, the other docking sleeve 4 is symmetrically provided with a female docking frame 26. The front end of the sub-docking frame 25 is located between the female docking frame 26 and the wiring sleeve 16, wherein each two symmetrical sub-docking frames 25 and two symmetrical female docking frames 26 are connected by The second bolt 27 is detachably connected, and a docking shielding layer 28 is fixedly installed inside each sub-docking frame 25 and the mother docking frame 26, wherein the docking shielding layer 28 on the mother docking frame 26 is in sliding contact with the front end of the sub-docking frame 25, and further includes a connecting ear 29 and a third bolt 30. Each sub-docking frame 25 and the mother docking frame 26 are symmetrically and fixedly installed with a connecting ear 29, and a third bolt 30 is detachably installed between the connecting ears 29 on the relative sub-docking frames 25 and the connecting ears 29 on the mother docking frame 26.

[0038] Specifically, after installing the mounting frame 21, you can start installing the sub-docking frame 25, install the two sub-docking frames 25 in the docking sleeves 4 at both ends of the wiring sleeve 16, on one of the docking sleeves 4, and fix the position of the sub-docking frame 25 by the second bolt 27, and then install the mother docking frame 26 on the other corresponding docking sleeve 4 through the same steps. At this time, the docking shielding layer 28 on the mother docking frame 26 slides and abuts against the front end of the sub-docking frame 25, so that the docking shielding layer 28 on the mother docking frame 26 overlaps with the docking shielding layer 28 on the sub-docking frame 25. At this time, the connecting ear 29 on the sub-docking frame 25 is matched with the connecting ear 29 on the mother docking frame 26, and the two are connected by the setting of the third bolt 30. Since one end of the docking shielding layer 28 overlaps with the docking sleeve 4, the anti-electromagnetic interference performance of the wiring sleeve 16 position at the connection is improved.

[0039] To sum up, during the use of the cable, the first shielding layer 2 is arranged to prevent external electromagnetic waves from interfering with the normal use of the cable. Since the core includes multiple twisted conductors 6, electromagnetic interference may also exist between the multiple twisted conductors 6. Since the flow of current in the twisted conductors will generate a magnetic field, and the current passing through different twisted conductors 6 may be different, it will cause differences in the distribution of magnetic fields between different twisted conductors 6, thereby causing electromagnetic interference. In order to reduce the electromagnetic interference between the multiple twisted conductors 6 in the same cable, the second shielding layer 8 is arranged to reduce the possibility of electromagnetic interference between the multiple twisted conductors 6. The first shielding layer 2 is located between the outer sheath 3 and the winding layer 1, and the second shielding layer 8 is located between the conductor insulation layer 7 and the isolation sleeve 9, thereby reducing the possibility of damage to the first shielding layer 2 and the second shielding layer 8 caused by external forces such as mechanical damage, extrusion or shearing during the laying process, thereby ensuring that the twisted cable has good shielding performance.

[0040] During the process of laying the cable, through the setting of the central filling layer 10, since an anti-bending groove 15 is opened inside the central filling layer 10, and the side wall of the anti-bending groove 15 is an arc-shaped surface, and at the same time, through the cooperation of the square groove 12 on the side gap filling layer 11, when the cable must be bent, the influence of concentrated stress on the conductor insulation layer 7 can be reduced, the possibility of damage to the first shielding layer 2 and the second shielding layer 8 is reduced, the ability to resist electromagnetic interference is improved, and the weight of the cable itself is reduced.

[0041] When laying cables, in order to connect different devices or systems, improve the reliability and maintainability of the system, and simplify the complexity of cable wiring, two cables can be connected. When connecting the two cables, the conductor insulation layer 7, the second shielding layer 8, and the isolation sleeve 9 are stripped. At this time, an arc-shaped annular groove 17 is opened at the butt end of the conductor insulation layer 7, and both sides of the butt end of the conductor insulation layer 7 are processed into a plane structure, and then the corresponding butt sleeve 4 is slidably mounted on the corresponding conductor insulation layer 7. At this time, the spring sheet 20 is in contact with the conductor insulation layer 7. The spring sheet 20 adopts a V-shaped structure. At this time, the spring sheet 20 is in a compressed state. When the installation groove 19 is When the position passes the arc-shaped annular groove 17, the docking sleeve 4 can be pushed to slide in the opposite direction until the spring sheet 20 releases the pressure, and the free end of the spring sheet 20 abuts against the arc-shaped annular groove 17 to fix the position of the docking sleeve 4. The planar structure on both sides of the docking end can prevent the docking sleeve 4 from rotating on the conductor insulation layer 7. At this time, the twisted conductor 6 is outside the conductor insulation layer 7, and then the twisted conductors 6 on the two cables are respectively inserted into the corresponding wiring sleeves 16, and the wiring sleeves 16 are crimped onto the corresponding twisted conductors 6 using tools such as crimping pliers to complete the connection, and then repeat this step until the multiple twisted conductors 6 in the two cables are connected.

[0042] In order to improve the anti-electromagnetic interference performance of the docking position, after fixing the position of the docking sleeve 4, the two mounting frames 21 are moved to the installation position. At this time, the arc strip 24 on the mounting frame 21 cooperates with the arc annular groove 17, and then the two mounting frames 21 are docked together by setting the first bolt 22. At this time, the third shielding layer 23 on the mounting frame 21 abuts against the corresponding second shielding layer 8 and abuts against the docking sleeve 4 at the same time, so that the effect of anti-electromagnetic interference can be achieved. Then, the two sub-docking frames 25 are installed in the docking sleeves 4 at both ends of the wiring sleeve 16, one of which is on the docking sleeve 4, and the sub-docking frames are fixed by the second bolts 27. 25, through the same steps, the mother docking frame 26 can be installed on another corresponding docking sleeve 4, at this time, the docking shielding layer 28 on the mother docking frame 26 slides and abuts against the front end of the sub-docking frame 25, so that the docking shielding layer 28 on the mother docking frame 26 overlaps with the docking shielding layer 28 on the sub-docking frame 25, at this time, the connecting ear 29 on the sub-docking frame 25 is matched with the connecting ear 29 on the mother docking frame 26, and the two are connected by the setting of the third bolt 30. Since one end of the docking shielding layer 28 overlaps with the docking sleeve 4, the anti-electromagnetic interference performance of the wiring sleeve 16 at the connection is improved.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic interference protection control cable, comprising a group of wire cores, wherein the outer surface of the group of wire cores is coated with a wrapping layer (1), the outer surface of the wrapping layer (1) is coated with a first shielding layer (2), and the outer surface of the first shielding layer (2) is coated with an outer sheath (3), characterized in that: Also includes: A filling layer, wherein the filling layer is arranged outside a group of the wire cores, and the filling layer is coated with the wrapping layer (1) outside, and is used to fill the gap between the group of the wire cores and the wrapping layer (1); A butt joint sleeve (4), the butt joint sleeve (4) being detachably mounted on both ends of each of the wire cores; A docking assembly is fixedly installed between each group of adjacent wire cores to connect the wire cores; An electromagnetic shielding component, which is installed on the docking component and is used to shield electromagnetic interference; A heat shrink sleeve (5) is fixedly installed between the two opposing outer sheaths (3).

2. The electromagnetic interference protection control cable according to claim 1, characterized in that: The wire core comprises: A twisted conductor (6), wherein a plurality of twisted conductors (6) are provided; A conductor insulation layer (7), each of the twisted conductors (6) is coated with a conductor insulation layer (7). A second shielding layer (8), wherein each of the conductor insulation layers (7) is coated with a second shielding layer (8); An isolation sleeve (9), wherein the outside of each second shielding layer (8) is covered with an isolation sleeve (9).

3. The electromagnetic interference protection control cable according to claim 2, characterized in that: The filling layer comprises: A central filling layer (10), wherein the central filling layer (10) is arranged between the plurality of isolation sleeves (9), and the central filling layer (10) is in contact with the isolation sleeves (9); A side gap filling layer (11), wherein the side gap filling layer (11) is disposed between each two adjacent isolation sleeves (9), the side gap filling layer (11) abuts against the isolation sleeves (9), and the side gap filling layer (11) abuts against the wrapping layer (1); A square groove (12), wherein each of the side gap filling layers (11) is provided with the square groove (12) in the middle; Side grooves (13), each of the square grooves (12) in the side gap filling layer (11) being provided with side grooves (13); Wherein, the side of the square groove (12) in each of the side gap filling layers (11) close to the central filling layer (10) is also provided with the side groove (13).

4. The electromagnetic interference protection control cable according to claim 3, characterized in that: Also includes: A filling bar (14), wherein each of the square grooves (12) and the side grooves (13) is fixedly installed with the filling bar (14); An anti-bending groove (15), wherein the anti-bending groove (15) is provided at the center of the central filling layer (10); Wherein, the side surfaces of the anti-bending grooves (15) are all arc-shaped with the bending direction facing the axial position of the outer sheath (3).

5. The electromagnetic interference protection control cable according to claim 4, characterized in that: The docking assembly comprises: A wiring sleeve (16), wherein the wiring sleeve (16) is fixedly installed between the two opposite twisted conductors (6); Wherein, the butt joint sleeve (4) is slidably matched with the conductor insulation layer (7), and the butt joint sleeve (4) is made of metal; Arc-shaped annular grooves (17), each of the two ends of the butt joint sleeve (4) being provided with the arc-shaped annular grooves (17); A fixing portion, the fixing portion being mounted on the butt joint sleeve (4) and being used to fix the position of the butt joint sleeve (4) on the conductor insulation layer (7).

6. The electromagnetic interference protection control cable according to claim 5, characterized in that: The fixing portion comprises: A positioning ring groove (18), wherein one end of each conductor insulation layer (7) that cooperates with the docking sleeve (4) is provided with the positioning ring groove (18); Installation grooves (19), each docking sleeve (4) having two installation grooves (19) symmetrically arranged inside; A spring sheet (20) is fixedly mounted inside each of the mounting grooves (19), and the spring sheet (20) is adapted to fit the positioning ring groove (18).

7. The electromagnetic interference protection control cable according to claim 6, characterized in that: The electromagnetic shielding assembly comprises: A mounting frame (21), wherein two mounting frames (21) are provided on the arc-shaped annular groove (17) on each of the docking sleeves (4), and the two mounting frames (21) are detachably connected via a first bolt (22); A third shielding layer (23), wherein each mounting frame (21) is provided with the third shielding layer (23), and the third shielding layer (23) abuts against the docking sleeve (4) and the second shielding layer (8); An arc-shaped strip (24), wherein each of the third shielding layers (23) is fixedly provided with the arc-shaped strip (24), and the arc-shaped strip (24) is adapted to fit the arc-shaped annular groove (17); A docking shielding part, which is mounted on the docking sleeve (4) and is used to shield electromagnetic interference between the wire and the wiring sleeve (16).

8. The electromagnetic interference protection control cable according to claim 7, characterized in that: The docking shielding portion comprises: A sub-docking frame (25), wherein the sub-docking frame (25) is symmetrically arranged on one of the docking sleeves (4) at both ends of each wiring sleeve (16); A female docking frame (26), in the docking sleeves (4) at both ends of each wiring sleeve (16), the female docking frame (26) is symmetrically arranged on the other docking sleeve (4), and the front end of the sub-docking frame (25) is located between the female docking frame (26) and the wiring sleeve (16); Wherein, every two symmetrical sub-docking frames (25) and two symmetrical female docking frames (26) are detachably connected via a second bolt (27); A docking shielding layer (28), wherein each of the sub-docking frames (25) and the mother-docking frame (26) is fixedly installed with the docking shielding layer (28); The docking shielding layer (28) on the female docking frame (26) is in sliding contact with the front end of the sub-docking frame (25).

9. The electromagnetic interference protection control cable according to claim 8, characterized in that: Also includes: A connecting ear (29), each of the sub-docking frames (25) and the mother-docking frame (26) being symmetrically and fixedly mounted with the connecting ear (29); The third bolt (30) is detachably mounted between the connecting ear (29) on the corresponding sub-docking frame (25) and the connecting ear (29) on the female docking frame (26).

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