A multimedia data communication cable

Abstract

The application discloses a multimedia data communication cable, relates to the technical field of communication cables, and comprises at least two wire cores which are spirally wound and mutually insulated, a shielding filling layer and a functional outer sleeve part which are successively sleeved outside the wire cores, the wire cores are even in number, and the diameters are composed of two gradually decreasing and gradually increasing sections which are connected in sequence and are arranged at equal lengths and intervals; the diameters of the corresponding matching positions of the multiple wire cores are equal. The application has the advantages that when the wire cores bear corresponding forces, the forces can be effectively dispersed, another wire core is deformed under stress to further disperse and relieve the forces; in addition, since the external shape of the wire core can effectively disperse external forces while effectively filling the gaps between the multiple wire cores and the functional outer sleeve part, the multimedia data communication cable has the purposes of effectively dispersing contact forces to cause structural damage and significantly prolonging the service life.

Description

Technical Field

[0001] This application relates to the field of communication cable technology, and in particular to a multimedia data communication cable. Background Technology

[0002] Multimedia communication cables are communication cables that integrate computer communication, audio and video communication, and telephone / fax. They consist of a cable core made of multiple insulated wires or conductors twisted together, and an outer sheath protecting the core from moisture and mechanical damage.

[0003] Chinese patent application CN115104160A discloses an automotive communication cable comprising: a single twisted pair conductor, the twisted pair conductor comprising a first conductor insulated by a first insulation layer and a second conductor insulated by a second insulation layer, wherein the first insulation layer and the second insulation layer are in contact with an associated conductor along the entire outer periphery of the conductor, and wherein the first insulation layer and the second insulation layer contain at least 95% w / w fluorinated ethylene propylene (FEP); and an outer sheath surrounding the twisted pair conductor.

[0004] However, the single twisted pair conductor of the automotive communication cable is only twisted together by the first and second conductors and then wrapped with a shielding layer and an outer sheath. This causes structural wear due to changes in the cable's shape caused by shaking and impact during use, which in turn affects the effective transmission of data. This issue needs to be improved. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a multimedia data communication cable that effectively disperses structural damage caused by contact forces and significantly extends its service life. The specific solution is as follows:

[0006] A multimedia data communication cable includes at least two spirally wound and mutually insulated wire cores, and a shielding filling layer and a functional outer jacket sequentially sleeved on the outside of the wire cores. The number of wire cores is even, and the diameter is composed of two segments of equal length and gradually decreasing and gradually increasing length connected in sequence. The diameters of the corresponding mating positions of the multiple wire cores are equal.

[0007] By adopting the above technical solution, when multiple wire cores are spirally wound together, their diameters remain consistent along the length direction. This ensures that when subjected to external force, the force is effectively dispersed on the outer periphery of each wire core. Furthermore, when the force is applied to the middle section between the gradually increasing and decreasing sections, the stressed wire core, while bearing the force and effectively dispersing it through deformation, further disperses and alleviates the force through deformation of another wire core, thus extending the service life of the multimedia data communication cable. Simultaneously, when the force is applied to the ends of the gradually increasing and decreasing sections, the end with the smallest diameter... Under stress, one core has the greatest compressive strength, and the other core has the corresponding greatest deformation capacity, thus effectively dispersing and mitigating the force. The end with the largest diameter has the greatest deformation capacity under stress, thereby efficiently dispersing the force and avoiding the impact of the force on the service life of the multimedia data communication cable. In addition, due to the external shape of the core, the shielding filling layer effectively fills the gap between multiple cores and the functional outer jacket, while effectively dispersing external forces. This enables the multimedia data communication cable to effectively disperse structural damage caused by contact forces and significantly extend its service life.

[0008] Preferably, the core wire is a spiral core wire and a mating core wire; the spiral core wire includes multiple spiral increasing diameter sections and spiral decreasing diameter sections arranged at intervals, and the mating core wire includes multiple mating increasing diameter sections and mating decreasing diameter sections arranged at intervals; the diameter of the end of the spiral increasing diameter section connected to the spiral decreasing diameter section gradually decreases towards both ends, and the diameter of the end of the mating increasing diameter section connected to the mating decreasing diameter section gradually increases towards both ends, and the spiral increasing diameter section and the mating increasing diameter section are spirally wound together, and the spiral decreasing diameter section and the mating decreasing diameter section are spirally wound together.

[0009] By adopting the above technical solution, the spiral diameter-increasing section, with its gradually increasing diameter, and the spiral diameter-decreasing section, with its gradually decreasing diameter, achieve a change in the diameter of the wire core when they are arranged and connected at intervals. Furthermore, by having the end with the gradually increasing diameter and the end with the gradually decreasing diameter cooperate with each other, the diameter is kept consistent along the length of the multimedia data communication cable. This ensures that the shielding filler layer fully fills the space between the wire core and the functional jacket, and that there is sufficient space and ability to release external stress between multiple wire cores, between the wire core and the functional jacket and the shielding filler layer. As a result, the multimedia data communication cable effectively disperses structural damage caused by contact forces and significantly extends its service life.

[0010] Preferably, the spiral increasing section and the spiral decreasing section are used for at most one spiral rotation.

[0011] By adopting the above technical solution, the spiral core and the mating core can be spirally wound together while avoiding the problem of structural damage caused by direct external force due to the high strength of the winding structure. This enables the multimedia data communication cable to effectively disperse structural damage caused by contact force and significantly extend its service life.

[0012] Preferably, the wire core includes a conductor core and an insulation layer; the insulation layer consists of a plurality of spaced-apart insulating sleeves and a combined insulating sleeve for connecting two adjacent spaced-apart insulating sleeves, and an insulating cavity is provided inside the combined insulating sleeve.

[0013] By adopting the above technical solution, the insulating cavity provides deformation space for the combined insulating sleeve, and achieves stable reset and continuous protection of the conductor core when the external force is removed.

[0014] Preferably, the combined insulating sleeve consists of an inner core insulating sleeve and a mating insulating sleeve, the insulating cavity is located between the inner core insulating sleeve and the mating insulating sleeve, and the thickness of the inner core insulating sleeve and the mating insulating sleeve is equal to the thickness of the spacer insulating sleeve.

[0015] By adopting the above technical solution, the insulating cavity, as a space to accommodate the deformation of the insulating sleeve, plays an effective role in dispersing and mitigating external forces, thereby significantly reducing the structural damage of external forces to the wire core. This enables the multimedia data communication cable to effectively disperse structural damage caused by contact forces and significantly extend its service life.

[0016] Preferably, the inner side of the mating insulating sleeve is provided with multiple reinforcing ribs with equal arc distribution.

[0017] By adopting the above technical solution, the reinforced ribs effectively improve the structural strength of the mating insulation sleeve, thereby preventing damage to the mating insulation sleeve and affecting the service life of the wire core.

[0018] Preferably, the insulating cavity is filled with insulating gas.

[0019] By adopting the above technical solution, the insulating gas can effectively prevent the generation of open flames when the insulating sleeve is damaged or when there is a risk of fire, thus significantly improving the fire resistance of the multimedia data communication cable.

[0020] Preferably, the insulating layer comprises, by weight, 100-120 parts of ultra-high molecular weight polyethylene, 100-120 parts of octene and polyolefin resin, 60-80 parts of ceramic powder, 12-18 parts of antimony trioxide, 6-8 parts of vulcanizing agent, 3-5 parts of coupling agent, 2-4 parts of diphenylmethane bismaleimide, 1-3 parts of lubricant, 1-3 parts of stabilizer, and 1-1.5 parts of radiation crosslinking agent; the preparation method of the insulating layer comprises ① mixing 100-120 parts of ultra-high molecular weight polyethylene, 100-120 parts of octene and polyolefin resin, 60-80 parts of ceramic powder, 12-18 parts of antimony trioxide, and 3-5 parts of coupling agent, ① Add 2-4 parts of diphenylmethane bismaleimide, 1-3 parts of lubricant, and 1-3 parts of stabilizer to a mixer at a temperature of 165-170℃ and melt mix for 15 minutes. After cooling and drying, introduce the mixture into a twin-screw extruder for melt extrusion to obtain a mixed masterbatch. ② Introduce 6-8 parts by weight of vulcanizing agent and 1-1.5 parts by weight of irradiated crosslinking agent into a mixer and mix for 10 minutes. Control the melting temperature at 140-165℃ and the rotation speed at least 3000 r / min to obtain a crosslinking masterbatch. ③ Melt extrude the crosslinking masterbatch obtained in step ② and form it on the outside of the conductor core. After irradiation, obtain the finished insulation layer.

[0021] Preferably, in step ③, the irradiation dose is 220 kGy, the voltage is 2 MeV, and the current is 10 mA.

[0022] Preferably, the vulcanizing agent is benzoyl peroxide or ethyl carbamate; the coupling agent is a silane coupling agent; the lubricant is paraffin wax; the stabilizer is a calcium-zinc composite stabilizer; and the irradiation crosslinking agent is DH-125DF.

[0023] As can be seen from the above solutions, this application provides a multimedia data communication cable, which has the following beneficial effects:

[0024] 1. By using the appropriate components to prepare the insulation layer, the insulation layer can not only play an effective insulating role, but also have high structural stability and compressive strength, and can effectively deform to disperse the force and have a high-efficiency rebound effect when subjected to external force;

[0025] 2. By forming an insulating cavity within the insulation layer that can be filled with insulating gas, the wire core effectively provides deformation space to prevent damage caused by external forces, while also providing effective fire protection.

[0026] 3. A spiral core is formed by combining spiral increasing and spiral decreasing sections, and a mating core is formed by combining mating increasing and mating decreasing sections. When the spiral core and the mating core are spirally wound together, they form a combined structure with the same diameter along the length direction but extending radially in opposite directions. This structure, when combined with the shielding filler layer, effectively disperses the force applied by the multimedia data communication cable in all directions and avoids damage to the conductor core when subjected to external forces. As a result, the multimedia data communication cable effectively disperses structural damage caused by contact forces and significantly extends its service life. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of the multimedia data communication cable disclosed in this application;

[0029] Figure 2 This is another cross-sectional view of the multimedia data communication cable disclosed in this application;

[0030] Figure 3 This is a schematic diagram of the unfolded structure of the spiral core and mating core disclosed in this application;

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Spiral core; 200. Matching core; 101. Spiral increasing diameter section; 102. Spiral decreasing diameter section; 201. Matching decreasing diameter section; 202. Matching increasing diameter section;

[0033] 11. Conductor core; 12. Core insulation sleeve; 13. Matching insulation sleeve; 131. Reinforcing rib; 14. Insulating cavity; 15. Spacer insulation sleeve;

[0034] 2. Shielding filling layer; 3. Functional outer jacket. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] It should be mentioned that the functional outer jacket 3 consists of the outermost protective outer jacket layer and a multifunctional composite layer connected to the inner side of the protective outer jacket layer. The multifunctional composite layer is formed by bonding one or more of the following layers in sequence: flame retardant layer, reinforcing layer, insulating layer, antifreeze layer, and waterproof layer.

[0037] Example 1

[0038] like Figure 1 As shown, a multimedia data communication cable includes at least two spirally wound and mutually insulated wire cores, and a shielding filler layer 2 and a functional outer jacket 3 sequentially sleeved on the outside of the wire cores. The number of wire cores is even; specifically, the wire cores are spiral wire cores 100 and mating wire cores 200. Furthermore, this multimedia data communication cable is composed of at least one set of two spirally wound spiral wire cores 100 and mating wire cores 200 (see...). Figure 3 ).

[0039] In this embodiment, the multimedia data communication cable includes a set of two spirally wound cores 100 and mating cores 200, and a functional outer jacket 3 is wrapped around the outside of the two spirally wound cores 100 and mating cores 200, and a shielding filler layer 2 is filled between the functional outer jacket 3 and the two spirally wound cores 100 and mating cores 200.

[0040] It should be noted that the spiral core 100 and the mating core 200 in the wire core are identical in shape, structure, and size. Furthermore, the diameter of the core is composed of two segments of equal length and spaced intervals, one gradually decreasing and the other gradually increasing, connected sequentially. The diameters of the two spirally wound cores 100 and 200 at their respective mating positions along the length direction remain consistent.

[0041] Therefore, when multiple wire cores are spirally wound together, their diameters remain consistent along their length. This allows the force to be effectively distributed across the outer periphery of each wire core when subjected to external forces. Furthermore, when the force is applied to the middle section between the gradually increasing and decreasing diameter sections, the stressed wire core, while bearing the force, effectively disperses it through deformation. Simultaneously, the deformation of another wire core further disperses and alleviates the force, thus extending the lifespan of the multimedia data communication cable. At the same time, when the force is applied to the ends of the gradually increasing and decreasing diameter sections, the end with the smallest diameter exhibits [a certain characteristic / effect]. The cable has the greatest compressive strength, and the other core has the corresponding maximum deformation capacity, thus effectively dispersing and mitigating the force. The end with the largest diameter has the greatest deformation capacity when under stress, thereby efficiently dispersing the force and avoiding the impact of the force on the service life of the multimedia data communication cable. In addition, due to the external shape composition of the core, the shielding filling layer 2 effectively fills the gap between the multiple cores and the functional outer jacket 3, while effectively dispersing the external force, so that the multimedia data communication cable can effectively disperse the structural damage caused by contact force and significantly extend its service life.

[0042] It should be noted that, as Figure 1 , Figure 3 As shown, the spiral core 100 includes multiple spaced-apart spiral increasing diameter sections 101 and spiral decreasing diameter sections 102. The mating core 200 includes multiple spaced-apart mating increasing diameter sections 202 and mating decreasing diameter sections 201. The diameter of the end where the spiral increasing diameter section 101 connects to the spiral decreasing diameter section 102 gradually decreases towards both ends, while the diameter of the end where the mating increasing diameter section 202 connects to the mating decreasing diameter section 201 gradually increases towards both ends. Furthermore, the spiral increasing diameter section 101 and the mating decreasing diameter section 201 are spirally wound together, and the spiral decreasing diameter section 102 and the mating increasing diameter section 202 are spirally wound together.

[0043] In the combined helical winding structure of the helical core 100 and the mating core 200, there are three parts: a, b, and c. Part a is the middle part between the helical diameter-increasing section 101 and the mating diameter-reducing section 201 or the helical diameter-reducing section 102 and the mating diameter-increasing section 202, and the diameters of the helical core 100 and the mating core 200 in this part are equal. Figure 1The ratio of x1 to x2 is 1. Part b is the connection between the larger diameter end of the spiral increasing section 101 and the smaller diameter end of the matching decreasing section 201, or the connection between the larger diameter end of the spiral decreasing section 102 and the smaller diameter end of the matching increasing section 202; part c is the connection between the smaller diameter end of the spiral decreasing section 102 and the larger diameter end of the matching increasing section 202, or the connection between the smaller diameter end of the spiral increasing section 101 and the larger diameter end of the matching decreasing section 201. Specifically, the diameter ratio of the spiral core 100 and the matching core 200 at part b is 1.2-3:1; the diameter ratio of the spiral core 100 and the matching core 200 at part c is 1:1.2-3, that is... Figure 2 The ratio of x1 to x2. In this embodiment, the diameter ratio of the spiral core 100 and the mating core 200 at part b is 1.2:1; the diameter ratio of the spiral core 100 and the mating core 200 at part c is 1:1.2.

[0044] Therefore, the spiral diameter-increasing section 101, with its gradually increasing diameter, and the spiral diameter-reducing section 102, with its gradually decreasing diameter, achieve a change in the diameter of the wire core when they are arranged and connected at intervals. By having the end with the gradually increasing diameter and the section with the gradually decreasing diameter cooperate with each other, the diameter is kept consistent along the length of the multimedia data communication cable. This ensures that the shielding filling layer 2 fully fills the space between the wire core and the functional outer jacket 3, and that there is sufficient space and ability to release external stress between multiple wire cores, between the wire core and the functional outer jacket 3 and the shielding filling layer 2. This allows the multimedia data communication cable to effectively disperse structural damage caused by contact forces and significantly extend its service life.

[0045] like Figure 1 , Figure 2 As shown, the spiral diameter-increasing section 101 and the spiral diameter-reducing section 102 are used to rotate the spiral at most one turn. This allows the spiral core 100 and the mating core 200 to spirally intertwine while avoiding structural damage caused by excessive winding due to the high strength of the winding structure and direct external force. As a result, the multimedia data communication cable effectively disperses the structural damage caused by contact force and significantly extends its service life.

[0046] It should be noted that the wire core includes the conductor core 11 and the insulation layer.

[0047] The insulation layer consists of multiple spaced insulating sleeves 15 and a combined insulating sleeve for connecting adjacent spaced insulating sleeves 15, with an insulating cavity 14 provided within the combined insulating sleeve. The insulating cavity 14 provides deformation space for the combined insulating sleeve and achieves stable reset and continuous protection of the conductor core 11 when the external force is removed.

[0048] It should be noted that the combined insulating sleeve consists of an inner core insulating sleeve 12 and a mating insulating sleeve 13. An insulating cavity 14 is located between the inner core insulating sleeve 12 and the mating insulating sleeve 13, and the thicknesses of the inner core insulating sleeve 12 and the mating insulating sleeve 13 are equal to the thickness of the spacer insulating sleeve 15. This insulating cavity 14 serves as a space for the deformation of the mating insulating sleeve 13 and effectively disperses and mitigates external forces, thereby significantly reducing the structural damage to the wire core caused by external forces. This allows the multimedia data communication cable to effectively disperse structural damage caused by contact forces and significantly extend its service life.

[0049] To further enhance the structural strength and service life of the mating insulating sleeve 13, multiple reinforcing ribs 131 with equal arc distribution are provided on the inner side of the mating insulating sleeve 13. In this embodiment, there are two reinforcing ribs 131 symmetrically distributed on the inner side of the mating insulating sleeve 13, so that the reinforcing ribs 131 effectively enhance the structural strength of the mating insulating sleeve 13, thereby preventing damage to the mating insulating sleeve 13 from affecting the service life of the wire core. At the same time, the insulating cavity 14 is filled with insulating gas. The insulating gas has a significant effect in effectively preventing the generation of open flames when the mating insulating sleeve 13 is damaged or when there is a risk of fire, thus significantly improving the fire resistance of the multimedia data communication cable.

[0050] Regarding the insulation layer of the multimedia data communication cable, the insulation layer of this application comprises 100 parts by weight of ultra-high molecular weight polyethylene, 100 parts of octene and polyolefin resin, 60 parts of ceramic powder, 12 parts of antimony trioxide, 6 parts of benzoyl peroxide, 3 parts of coupling agent, 2 parts of diphenylmethane bismaleimide, 1 part of lubricant, 1 part of stabilizer and 1 part of irradiation crosslinking agent.

[0051] Meanwhile, the method for preparing the insulating layer in this application includes the following steps:

[0052] ① Add 100 parts by weight of ultra-high molecular weight polyethylene, 100 parts of octene and polyolefin resin, 60 parts of ceramic powder, 12 parts of antimony trioxide, 3 parts of coupling agent, 2 parts of diphenylmethane bismaleimide, 1 part of lubricant and 1 part of stabilizer to a mixer at a temperature of 165℃ and melt mix for 15 minutes. After cooling and drying, introduce it into a twin-screw extruder for melt extrusion to obtain mixed masterbatch.

[0053] ② Add 6 parts by weight of benzoyl peroxide and 1 part by weight of irradiated crosslinking agent to the mixed masterbatch obtained in step ① and mix for 10 min in a mixer, controlling the mixing and melting temperature at 140℃ and the rotation speed at 3000 r / min to obtain crosslinking masterbatch.

[0054] ③ The crosslinked masterbatch obtained in step ② is melt-extruded and formed on the outer side of the conductor core. After irradiation, the finished insulation layer is obtained, and the irradiation dose is 220kGy, the voltage is 2MeV, and the current is 10mA.

[0055] It should be mentioned that the insulator of this multimedia data communication cable is composed of benzoyl peroxide or urethane as the vulcanizing agent, silane coupling agent as the coupling agent, paraffin wax as the lubricant, calcium-zinc composite stabilizer as the stabilizer, and DH-125DF as the irradiation crosslinking agent.

[0056] Example 2

[0057] The difference between Example 2 and Example 1 is that the components for the insulating layer in Example 2 include, by weight, 110 parts of ultra-high molecular weight polyethylene, 110 parts of octene and polyolefin resin, 70 parts of ceramic powder, 15 parts of antimony trioxide, 7 parts of urethane, 4 parts of silane coupling agent, 3 parts of diphenylmethane bismaleimide, 2 parts of paraffin wax, 2 parts of calcium-zinc composite stabilizer, and 1.3 parts of irradiation crosslinking agent DH-125DF.

[0058] Meanwhile, the method for preparing the insulating layer in this application includes the following steps:

[0059] ① Add 110 parts by weight of ultra-high molecular weight polyethylene, 110 parts of octene and polyolefin resin, 70 parts of ceramic powder, 15 parts of antimony trioxide, 4 parts of silane coupling agent, 3 parts of diphenylmethane bismaleimide, 2 parts of paraffin wax and 2 parts of calcium-zinc composite stabilizer to a mixer at a temperature of 167℃ and melt mix for 15 minutes. After cooling and drying, introduce it into a twin-screw extruder for melt extrusion to obtain mixed masterbatch.

[0060] ② Add 7 parts by weight of urethane and 1.3 parts by weight of irradiated crosslinking agent DH-125DF to the mixed masterbatch obtained in step ① and mix for 10 minutes. Control the mixing and melting temperature to 155℃ and the rotation speed to 4000r / min to obtain crosslinking masterbatch.

[0061] ③ The crosslinked masterbatch obtained in step ② is melt-extruded and formed on the outer side of the conductor core. After irradiation, the finished insulation layer is obtained, and the irradiation dose is 220kGy, the voltage is 2MeV, and the current is 10mA.

[0062] Example 3

[0063] The difference between Example 3 and Example 1 is that the components for the insulating layer in Example 3 include 120 parts by weight of ultra-high molecular weight polyethylene, 120 parts by weight of octene and polyolefin resin, 80 parts by weight of ceramic powder, 18 parts by weight of antimony trioxide, 8 parts by weight of urethane, 5 parts by weight of silane coupling agent, 4 parts by weight of diphenylmethane bismaleimide, 3 parts by weight of paraffin, 3 parts by weight of calcium-zinc composite stabilizer, and 1.5 parts by weight of radiation crosslinking agent DH-125DF.

[0064] Meanwhile, the method for preparing the insulating layer in this application includes the following steps:

[0065] ① Add 120 parts by weight of ultra-high molecular weight polyethylene, 120 parts of octene and polyolefin resin, 80 parts of ceramic powder, 18 parts of antimony trioxide, 5 parts of silane coupling agent, 4 parts of diphenylmethane bismaleimide, 3 parts of paraffin wax and 3 parts of calcium-zinc composite stabilizer to a mixer at a temperature of 170℃ and melt mix for 15 minutes. After cooling and drying, introduce it into a twin-screw extruder for melt extrusion to obtain mixed masterbatch.

[0066] ② Add 8 parts by weight of urethane and 1.5 parts by weight of irradiated crosslinking agent DH-125DF to the mixed masterbatch obtained in step ① and mix for 10 minutes. Control the mixing and melting temperature to 165℃ and the rotation speed to 3500r / min to obtain crosslinking masterbatch.

[0067] ③ The crosslinked masterbatch obtained in step ② is melt-extruded and formed on the outer side of the conductor core. After irradiation, the finished insulation layer is obtained, and the irradiation dose is 220kGy, the voltage is 2MeV, and the current is 10mA.

[0068] Example 4

[0069] The difference between Example 4 and Example 1 is that in Example 4, the diameter ratio of the spiral core 100 and the mating core 200 located at part b is 2:1; and the diameter ratio of the spiral core 100 and the mating core 200 located at part c is 1:2.

[0070] Example 5

[0071] The difference between Example 5 and Example 1 is that in Example 5, the diameter ratio of the spiral core 100 and the mating core 200 located at part b is 3:1; and the diameter ratio of the spiral core 100 and the mating core 200 located at part c is 1:3.

[0072] Environmental stress cracking tests were conducted using GB / T2951.8-1997, and the following test results were obtained:

[0073] Example 1 No cracks Example 2 No cracks Example 3 No cracks Example 4 No cracks Example 5 No cracks

[0074] In summary, this application provides a multimedia data communication cable. This cable uses a component-specific insulation layer to achieve effective insulation while maintaining high structural stability and compressive strength. Furthermore, it exhibits effective deformation under external force to disperse the force and provides efficient rebound. By forming an insulating cavity 14 within the insulation layer for filling with insulating gas, the wire core is provided with deformation space to prevent damage from external forces, while also providing effective fire resistance. Simultaneously, the cable utilizes a spiral diameter-increasing section 101 and a spiral diameter-reducing section 101, respectively. The combination of 02 forms a spiral core 100, and the combination of the diameter-increasing section 202 and the diameter-reducing section 201 forms a mating core 200. When the spiral core 100 is spirally wound with the mating core 200, it forms a combination structure with the same diameter along the length direction but extending radially in opposite directions. When combined with the shielding filling layer 2, the multimedia data communication cable can effectively disperse the force applied by external forces in all directions and avoid damage to the conductor core 11 of the core. This enables the multimedia data communication cable to effectively disperse structural damage caused by contact forces and significantly extend its service life.

[0075] The terms “first,” “second,” “third,” “fourth,” etc., used in this application (if applicable) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, or apparatus.

[0076] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0077] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A multimedia data communication cable, comprising at least two spirally wound and mutually insulated cores, and a shielding filler layer (2) and a functional outer jacket (3) sequentially sleeved on the outside of the cores, characterized in that: The number of wire cores is even, and the diameter is composed of two segments of equal length and gradually decreasing and gradually increasing diameter connected in sequence; the diameters of the corresponding mating positions of the multiple wire cores are equal; the wire cores are helical wire cores (100) and mating wire cores (200); the helical wire core (100) includes multiple helical diameter increasing segments (101) and helical diameter decreasing segments (102) arranged at intervals, and the mating wire core (200) includes multiple mating diameter increasing segments (202) and mating diameter decreasing segments (201) arranged at intervals; the diameter of the end of the helical diameter increasing segment (101) connected to the helical diameter decreasing segment (102) gradually decreases towards both ends, and the diameter of the end of the mating diameter increasing segment (202) connected to the mating diameter decreasing segment (201) gradually increases towards both ends, and the helical diameter increasing segment (101) and the mating diameter decreasing segment (201) are helically wound, and the helical diameter decreasing segment (102) and the mating diameter increasing segment (202) are helically wound.

2. The multimedia data communication cable according to claim 1, characterized in that: The spiral increasing section (101) and the spiral decreasing section (102) are used for spiral rotation at most one revolution.

3. The multimedia data communication cable according to claim 1, characterized in that: The wire core includes a conductor core (11) and an insulation layer; the insulation layer consists of a plurality of spaced insulating sleeves (15) and a combined insulating sleeve for connecting two adjacent spaced insulating sleeves (15), and an insulating cavity (14) is provided inside the combined insulating sleeve.

4. A multimedia data communication cable according to claim 3, characterized in that: The combined insulating sleeve consists of an inner core insulating sleeve (12) and a mating insulating sleeve (13). The insulating cavity (14) is located between the inner core insulating sleeve (12) and the mating insulating sleeve (13), and the thickness of the inner core insulating sleeve (12) and the mating insulating sleeve (13) is equal to the thickness of the spacer insulating sleeve (15).

5. A multimedia data communication cable according to claim 4, characterized in that: The inner side of the insulating sleeve (13) is provided with a plurality of reinforcing ribs (131) with equal arc distribution.

6. A multimedia data communication cable according to claim 3, characterized in that: The insulating cavity (14) is filled with insulating gas.

7. A multimedia data communication cable according to claim 3, characterized in that: The insulating layer comprises, by weight, 100-120 parts of ultra-high molecular weight polyethylene, 100-120 parts of octene and polyolefin resin, 60-80 parts of ceramic powder, 12-18 parts of antimony trioxide, 6-8 parts of vulcanizing agent, 3-5 parts of coupling agent, 2-4 parts of diphenylmethane bismaleimide, 1-3 parts of lubricant, 1-3 parts of stabilizer, and 1-1.5 parts of irradiation crosslinking agent; the preparation method of the insulating layer comprises ① mixing 100-120 parts of ultra-high molecular weight polyethylene, 100-120 parts of octene and polyolefin resin, 60-80 parts of ceramic powder, 12- ① Add 18 parts of antimony trioxide, 3-5 parts of coupling agent, 2-4 parts of diphenylmethane bismaleimide, 1-3 parts of lubricant and 1-3 parts of stabilizer to a mixer at a temperature of 165-170℃ and melt mix for 15 minutes. After cooling and drying, introduce the mixture into a twin-screw extruder for melt extrusion to obtain a mixed masterbatch. ② Introduce 6-8 parts by weight of vulcanizing agent and 1-1.5 parts by weight of irradiated crosslinking agent into a mixer and mix for 10 minutes with the mixed masterbatch obtained in step ①. Control the mixing and melting temperature at 140-165℃ and the rotation speed at least 3000 r / min to obtain a crosslinking masterbatch. ③ The cross-linked masterbatch obtained in step ② is melt-extruded and formed on the outside of the conductor core (11), and the finished insulation layer is obtained after irradiation.

8. A multimedia data communication cable according to claim 7, characterized in that: In step ③, the irradiation dose is 220 kGy, the voltage is 2 MeV, and the current is 10 mA.

9. A multimedia data communication cable according to claim 7, characterized in that: The vulcanizing agent is benzoyl peroxide or ethyl carbamate; the coupling agent is a silane coupling agent; the lubricant is paraffin wax; the stabilizer is a calcium-zinc composite stabilizer; and the irradiation crosslinking agent is DH-125DF.

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