Lead sheath computer cable

Abstract

The invention discloses a lead sheath computer cable, and relates to the technical field of cables, the lead sheath computer cable comprises a middle wire core, the middle wire core is formed by twisting a plurality of wires, and each wire comprises a conductor, an insulating layer and a first shielding layer; the outer ring of the middle wire core is provided with a flame-retardant layer, the gap between the middle wire core and the flame-retardant layer is filled with branch wire cores, the outer ring of the flame-retardant layer is fixedly provided with a second shielding layer, and the outer ring of the second shielding layer is fixedly provided with a lead sheath; a non-metal protective sleeve is fixedly arranged on the outer ring of the lead sheath, a plurality of metal pipes are fixedly installed in the non-metal protective sleeve, and the metal pipes make contact with the lead sheath, the mechanical performance of the cable is improved through the arrangement of the lead sheath, and alloy made of some metal according to a certain proportion is adopted to replace pure lead so as to reduce the usage amount of lead; meanwhile, good mechanical strength and pressure resistance are kept; the problems that in the prior art, a ceramic silicone rubber cable is poor in anti-pressure capacity and prone to being damaged under high-strength pressure are solved.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a lead sheathed computer cable. Background Art

[0002] Computer cables are cables used for electrical equipment and need to have properties such as temperature resistance, flame retardancy, pressure resistance, and electromagnetic shielding, while also ensuring the stability of signal transmission.

[0003] The Chinese invention with publication number CN113539564A proposes a ceramic silicone rubber insulated intrinsically safe flame retardant computer cable: the processing method of the cable includes the following steps: S1, preparing the conductor; S2, preparing the halogen-free flame retardant tape; S3, pre-treating the ceramic powder; S4, preparing the ceramic silicone rubber insulation material; S5, preparing the insulating sheath; S6, cable integration preparation, the computer cable uses environmentally friendly ceramic silicone rubber as the insulation layer and the sheath layer, and the tape filling and the like are all made of halogen-free low-smoke materials;

[0004] However, the existing technology still has shortcomings:

[0005] Although ceramic silicone rubber has excellent temperature resistance and flame retardancy, it is easily damaged under physical impact or high-intensity pressure, affecting the practicality of the cable. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a lead sheathed computer cable, which solves the problem that the ceramic silicone rubber cable in the prior art has weak compression resistance and is easily damaged under physical impact or high-intensity pressure.

[0007] To achieve the above-mentioned purpose, the present invention proposes a lead sheathed computer cable, comprising an intermediate core, wherein the intermediate core is formed by twisting a plurality of conductors, wherein the conductor comprises a conductor, an insulating layer, and a first shielding layer; the insulating layer is fixedly installed on the outer ring of the conductor, and a plurality of conductors provided with the insulating layer are twisted with the first shielding layer fixedly installed on the outer layer to form the conductor, and a plurality of the conductors are twisted to form the intermediate core, the outer ring of the intermediate core is provided with a flame retardant layer, the gap between the intermediate core and the flame retardant layer is filled with a branch core, the outer ring of the flame retardant layer is fixedly provided with a second shielding layer, and the outer ring of the second shielding layer is fixedly provided with a lead sheath; the outer ring of the lead sheath is fixedly provided with a non-metallic protective sheath, and a plurality of metal tubes are fixedly installed in the non-metallic protective sheath, and the metal tubes are in contact with the lead sheath.

[0008] As a further solution of the present invention: the metal tubes are symmetrically arranged in the non-metallic protective sleeve at equal distances.

[0009] As a further solution of the present invention: the conductor is a copper wire, and the insulating layer is made of polyvinyl chloride and is fixedly arranged on the outer ring of the conductor to insulate the conductor.

[0010] As a further solution of the present invention: the first shielding layer and the second shielding layer are both made of copper foil braided mesh, and the braiding density of the copper foil is greater than 80%.

[0011] As a further solution of the present invention: the lead sheath is made of lead alloy.

[0012] As a further solution of the present invention: the addition ratios of other metal elements in the lead alloy are 0.1% antimony, 0.3% tin, 0.02% silver, 0.03% copper and 0.06% bismuth.

[0013] As a further solution of the present invention: the metal tube is made of aluminum alloy, and the non-metallic protective sleeve is made of polyethylene.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The method comprises the following steps: wrapping an insulating layer around the outer layer of a conductor, twisting a plurality of conductors provided with insulating layers, and fixing a first shielding layer on the outer layer to form a conductor; then twisting a plurality of conductors to form an intermediate core; fixing a flame retardant layer made of polyvinyl chloride (PVC) with a flame retardant on the outer ring of the intermediate core; filling a branch core in the gap between the intermediate core and the flame retardant layer; fixing a second shielding layer on the outer ring of the flame retardant layer; and fixing a lead sheath made of a lead alloy on the outer ring of the second shielding layer; according to the use requirements, a non-metallic protective sheath made of a plastic material with excellent insulation, corrosion resistance and wear resistance can be fixedly provided on the outer ring of the lead sheath; fixing a plurality of metal tubes in the non-metallic protective sheath; the metal tubes are symmetrically arranged in the non-metallic protective sheath at equal distances; and one end of the metal tubes is in contact with the lead sheath to complete the production of the cable; and the overall compression resistance of the cable is enhanced by providing the lead sheath;

[0016] The lead sheath is made of lead alloy, and tin, antimony, copper and other metals are added to the lead in a certain proportion to form an alloy to improve the performance of lead and reduce its toxicity. In the present invention, the addition ratio of other metal elements selected by the research and development group is 0.1% antimony, 0.3% tin, 0.02% silver, 0.03% copper and 0.06% bismuth. The addition of these elements is intended to improve the strength, flexibility, ductility and processing characteristics of the lead-based alloy, while maintaining uniform distribution and stable composition to ensure the consistency and density of the lead alloy. Lead alloying reduces the amount of lead used to a certain extent, while maintaining good mechanical strength and compressive resistance; preferably, a non-toxic polymer such as epoxy resin or polyurethane can be coated on the outer ring of the lead sheath to form a barrier to prevent the release of lead and improve the corrosion resistance and wear resistance of the lead sheath.

[0017] In order to further improve the safety of lead sheathed cables, non-toxic polymers such as epoxy resin or polyurethane can be coated on the outer ring of the lead sheath to form a barrier to prevent the release of lead and improve the corrosion resistance and wear resistance of the lead sheath. Metal tubes can also be symmetrically arranged at equal distances inside the non-metallic protective sheath. The metal tubes are in contact with the lead sheath to enhance the mechanical strength of the cable, provide physical protection, and enhance the heat dissipation performance of the cable. The non-metallic protective sheath is provided to provide electrical insulation protection for the cable to prevent short circuit or leakage of the wires. At the same time, it can also resist corrosion to the cable by chemicals, moisture and other environmental factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the cable installation bracket of the present invention.

[0021] In the figure: 1. middle core; 2. branch core; 3. wire; 4. conductor; 5. insulation layer; 6. first shielding layer; 7. flame retardant layer; 8. second shielding layer; 9. lead sheath; 10. metal tube; 11. non-metallic protective cover; 12. slider; 13. mounting plate; 14. bolt; 15. side hole; 16. support plate; 17. adjustment ring; 18. mounting table. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0023] Embodiment 1:

[0024] like Figure 1 , 3As shown, a lead sheathed computer cable, a lead sheathed computer cable, includes an intermediate core 1, the intermediate core 1 is the main conductor in the cable, responsible for transmitting current or signals, and is the core part of the cable, the intermediate core 1 is formed by twisting a plurality of wires 3, the wire 3 includes a conductor 4, an insulating layer 5, and a first shielding layer 6; the conductor 4 is a highly conductive metal, in this embodiment, it is a copper wire, the insulating layer 5 is fixedly installed on the outer ring of the conductor 4, a plurality of conductors 4 provided with insulating layers 5 are twisted and the outer layer is fixedly installed with the first shielding layer 6 to form the wire 3, a plurality of wires 3 are twisted to form the intermediate core 1, the outer ring of the intermediate core 1 is provided with a flame retardant layer 7, the gap between the intermediate core 1 and the flame retardant layer 7 is filled with a branch core 2, the branch core 2 is a conductor for distributing current or signals; the current or signal can be distributed to multiple terminals or devices; the outer ring of the flame retardant layer 7 is fixedly provided with a second shielding layer 8, and the outer ring of the second shielding layer 8 is fixedly provided with a lead sheath 9;

[0025] The insulating layer 5 is made of polyvinyl chloride (PVC) and is fixedly arranged on the outer ring of the conductor 4 to insulate the conductor 4 to prevent short circuit and improve durability; the first shielding layer 6 is made of a copper foil woven mesh, the weaving density of the copper foil is greater than 80%, and the main function of the first shielding layer 6 is to reduce electromagnetic interference (EMI) and radio frequency interference (RFI) and improve the transmission quality of the signal; the flame retardant layer 7 is made of polyvinyl chloride (PVC) with a flame retardant added. The PVC material is easy to process and has low cost; the addition of flame retardants can significantly improve its flame retardant properties. The second shielding layer 8 is made of a copper foil woven mesh like the first shielding layer 6. The second shielding layer 8 is provided to further enhance the electromagnetic interference shielding effect of the cable and ensure the integrity of the signal, which is particularly important in the application of high frequency or sensitive signals; the lead sheath 9 is made of lead alloy, and tin, antimony, copper and other metals are added to the lead in a certain proportion to form an alloy to improve the performance of the lead and reduce its toxicity. In this embodiment, the addition ratios of other metal elements are antimony 0.1%, tin 0.3%, silver 0.02%, copper 0.03% and bismuth 0.06%. The addition of these elements is intended to improve the strength, flexibility, ductility and processing characteristics of the lead-based alloy, while maintaining uniform distribution and stable composition to ensure the consistency and density of the lead alloy. Lead alloying reduces the amount of lead used to a certain extent while maintaining good mechanical strength and compressive resistance. Preferably, a non-toxic polymer such as epoxy resin or polyurethane can be coated on the outer ring of the lead sheath 9 to form a barrier to prevent the release of lead and improve the corrosion resistance and wear resistance of the lead sheath.

[0026] When in use, the cable is installed on the mounting platform 18. When the cable is installed, a mounting bracket is used in conjunction with the cable, instead of directly fixing the cable on the mounting platform 18, so as to improve the heat dissipation efficiency of the cable, enhance the mechanical protection of the cable, and facilitate maintenance and inspection;

[0027] As an implementation method in this embodiment, the mounting bracket includes a slider 12, a mounting plate 13, a support plate 16, and an adjustment ring 17; the slider 12, the mounting plate 13, and the support plate 16 are each provided with a pair, the slider 12 is slidably connected to the mounting plate 13, a plurality of side holes 15 are provided on the side of the mounting plate 13, and the slider 12 is provided with side holes 15 of the same specification. The slider 12 and the mounting plate 13 can be fixedly connected by tightening a pair of side holes 15 with screws, one end of the support plate 16 is fixedly connected to the slider 12, and the other end is fixedly connected to the adjustment ring 17, an adjusting ring 17 is fixedly installed between a pair of support plates 16, and the adjusting ring 17 is a metal ring with a certain elasticity. A notch is opened on the adjusting ring 17 to facilitate the clamping of the cable. A pair of threaded holes are opened on the mounting plate 13, and bolts 14 are connected to the threads in the threaded holes. The mounting plate 13 is fixedly connected to the mounting platform 18 through the bolts 14; a pair of sliders 12 are slid toward each other, and then the sliders 12 are fixedly connected to the mounting plate 13 through the side holes 15, so as to adjust the notch of the adjusting ring 17 and facilitate the clamping of cables of different diameters.

[0028] Embodiment 2:

[0029] like Figure 2 As shown, a lead sheathed computer cable comprises an intermediate core 1, which is formed by twisting a plurality of conductors 3, wherein the conductor 3 comprises a conductor 4, an insulating layer 5, and a first shielding layer 6; the conductor 4 is a highly conductive metal, which is a copper wire in this embodiment, and the insulating layer 5 is fixedly installed on the outer ring of the conductor 4, and a plurality of conductors 4 provided with insulating layers 5 are twisted and the outer layer is fixedly installed with the first shielding layer 6 to form the conductor 3, and a plurality of conductors 3 are twisted to form the intermediate core 1, and the outer ring of the intermediate core 1 is provided with a flame retardant layer 7, and the intermediate core 1 and the flame retardant The gaps between the layers 7 are filled with a branch core 2, which is a conductor for distributing current or signals; the current or signal can be distributed to multiple terminals or devices; the outer ring of the flame retardant layer 7 is fixedly provided with a second shielding layer 8, and the outer ring of the second shielding layer 8 is fixedly provided with a lead sheath 9; the outer ring of the lead sheath 9 is fixedly provided with a non-metallic protective sheath 11, and a plurality of metal tubes 10 are fixedly installed in the non-metallic protective sheath 11, and the metal tubes 10 are symmetrically arranged in the non-metallic protective sheath 11, and the metal tubes 10 are in contact with the lead sheath 9;

[0030] The metal tube 10 is made of aluminum alloy. The purpose of the metal tube 10 is to enhance the mechanical strength of the cable, provide physical protection, and enhance the heat dissipation performance of the cable. The non-metallic protective sheath 11 is made of a plastic material with excellent insulation, corrosion resistance and wear resistance, and is polyethylene (PE) in this embodiment. The function of the non-metallic protective sheath 11 is to provide electrical insulation protection for the cable, prevent short circuit or leakage of the wire, and also resist corrosion of the cable by chemicals, moisture and other environmental factors. In this embodiment, attention should be paid to the end treatment of the cable during use. When using a wire stripper, the metal tube 10 should be skipped to avoid damage to the cable. For the end treatment of the cable, first, a special wire stripper should be used according to the length to be used, and the flame retardant layer 7 and subsequent structures at the end of the cable should be carefully stripped off, usually leaving an appropriate length of the middle wire core 1 exposed, and a suitable connector or terminal should be selected according to the needs. Insert the exposed middle core 1 and branch core 2 into the connector or terminal, and use a crimping tool to crimp them to ensure a firm connection. For the exposed middle core 1 and branch core 2 after crimping, you can choose to use heat shrink tubing, insulating tape and other materials for insulation treatment to prevent short circuits and external environmental influences. After the overall connection of the cable is completed, it is necessary to carry out necessary electrical tests to ensure that the cable connection is normal and meets the use requirements. After the inspection is completed, the limited installation can be carried out. By setting up several groups of mounting brackets, the cable is raised. The width of the mounting bracket can be adjusted according to the diameter of the cable. The cable is raised by several groups of mounting brackets to leave space between the cable and the mounting board to promote air circulation and help heat dissipation. Good air circulation can prevent the cable from overheating and extend the service life of the cable. Directly fixing the cable on the mounting board may cause the cable to contact the board surface, thereby forming heat accumulation. Using a mounting bracket can reduce this contact and reduce the possibility of heat accumulation.

[0031] Working principle:

[0032] A first shielding layer 6 and a second shielding layer 8 are made of a copper foil braided mesh, an insulating layer 5 is wrapped around the outer layer of a conductor 4, a plurality of conductors 4 provided with insulating layers 5 are twisted together and the outer layers are fixedly installed with the first shielding layer 6 to form a wire 3, then a plurality of wires 3 are twisted together to form an intermediate core 1, a flame retardant layer 7 made of polyvinyl chloride (PVC) with a flame retardant added is fixedly provided on the outer ring of the intermediate core 1, a branch core 2 is filled in the gap between the intermediate core 1 and the flame retardant layer 7, a second shielding layer 8 is fixedly provided on the outer ring of the flame retardant layer 7, and a lead sheath 9 made of a lead alloy is fixedly provided on the outer ring of the second shielding layer 8; according to the use requirements, a plastic having excellent insulation, corrosion resistance and wear resistance can be fixedly provided on the outer ring of the lead sheath 9. A non-metallic protective sleeve 11 is made of a material, and a plurality of metal tubes 10 are fixedly installed in the non-metallic protective sleeve 11. The metal tubes 10 are symmetrically arranged in the non-metallic protective sleeve 11, and one end of the metal tube 10 is in contact with the lead sheath 9. The cable is manufactured. When installed and used, a mounting bracket is used in conjunction with the mounting bracket. The mounting bracket is fixedly installed on the mounting table, and the cable is inserted into the mounting bracket to provide support and limit for the cable; the width of the mounting bracket is adjustable, and the mounting plate 13 and the mounting table 18 are fixedly connected by bolts 14; a pair of sliders 12 are slid toward each other, and the sliders 12 are fixedly connected to the mounting plate 13 through the side holes 15, so as to adjust the notch of the adjustment ring 17 and facilitate the insertion of cables of different diameters.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A lead sheathed computer cable, characterized in that: The invention comprises an intermediate core (1), wherein the intermediate core (1) is formed by twisting a plurality of conductors (3), wherein the conductor (3) comprises a conductor (4), an insulating layer (5), and a first shielding layer (6); the insulating layer (5) is fixedly mounted on the outer ring of the conductor (4), and a plurality of conductors (4) provided with the insulating layer (5) are twisted together and the outer layer is fixedly mounted with the first shielding layer (6) to form the conductor (3); a plurality of the conductors (3) are twisted together to form the intermediate core (1), and the outer ring of the intermediate core (1) is A flame retardant layer (7) is provided, the gap between the intermediate core (1) and the flame retardant layer (7) is filled with a branch core (2), the outer ring of the flame retardant layer (7) is fixedly provided with a second shielding layer (8), the outer ring of the second shielding layer (8) is fixedly provided with a lead sheath (9); the outer ring of the lead sheath (9) is fixedly provided with a non-metallic protective sheath (11), a plurality of metal tubes (10) are fixedly installed in the non-metallic protective sheath (11), and the metal tubes (10) are in contact with the lead sheath (9).

2. A lead sheathed computer cable according to claim 1, characterized in that: The metal tubes (10) are symmetrically arranged at equal distances inside the non-metallic protective sleeve (11).

3. A lead sheathed computer cable according to claim 1, characterized in that: The conductor (4) is a copper wire, and the insulating layer (5) is made of polyvinyl chloride (PVC) and is fixedly arranged on the outer ring of the conductor (4) to perform insulation treatment on the conductor (4).

4. A lead sheathed computer cable according to claim 1, characterized in that: The first shielding layer (6) and the second shielding layer (8) are both made of copper foil braided mesh, and the braiding density of the copper foil is greater than 80%.

5. A lead sheathed computer cable according to claim 1, characterized in that: The lead sheath (9) is made of lead alloy.

6. A lead sheathed computer cable according to claim 5, characterized in that: The addition ratios of other metal elements in the lead alloy are antimony 0.1%, tin 0.3%, silver 0.02%, copper 0.03% and bismuth 0.06%.

7. A lead sheathed computer cable according to claim 1, characterized in that: The metal pipe (10) is made of aluminum alloy, and the non-metallic protective sleeve (11) is made of polyethylene (PE).

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