High-speed cable

Abstract

The utility model relates to a high-speed cable capable of effectively improving the signal transmission capability of a cable core and effectively improving the anti-bending effect of the cable core, which comprises a cable core wire made of silver-copper alloy, a plurality of concave arc grooves are symmetrically arranged on the cross section of the cable core wire, and the concave arc grooves are arranged on the cross section of the cable core wire. A cable core wire is wrapped by vulcanized silica gel to form a concave-convex matching cable wire, a PET film layer is wound on a spiral pressing edge of the cable wire, an air-gap-free aluminum foil shielding layer is wound on a spiral pressing edge of the PET film layer, and a PE film layer is wound on a spiral pressing edge of the air-gap-free aluminum foil shielding layer. The high-speed cable has the advantages that: 1, the high-speed cable not only can completely meet and exceed the technical requirements of a wire core required by a high-speed cable, but also has strong high-speed signal transmission capability, and signals in high-speed transmission are hardly interfered by external clutters; and 2, the mechanical property is very excellent, the anti-bending and anti-bending effects are very excellent, and the phenomena of fracture, damage and core wire breakage are avoided in 10000 times of bending tests.

Description

Technical Field

[0001] This utility model relates to a high-speed cable that can effectively improve the signal transmission capability of the cable core and effectively improve the bending resistance of the core, belonging to the field of core wire manufacturing. Background Technology

[0002] US202017033595A, a utility model entitled "Cable," describes a cable whose main objective is to provide a cable with good shielding effect and stable signal transmission capability. To achieve this objective, the cable includes: a core wire comprising an inner conductor and an insulation layer formed by extrusion around the inner conductor; a shielding layer covering the core wire; and an outer insulation layer covering the shielding layer; wherein the shielding layer is silver-plated copper foil, and there is no insulation layer between the core wire and the silver-plated copper foil. Compared with the prior art, the advantage of this invention is that using silver-plated copper foil as the shielding layer increases the shielding effect of the signal cable, thereby protecting the signal cable from external interference during signal transmission and ensuring the reliability of signal transmission. The cable of this invention has the capability to transmit high-speed data signals with frequencies greater than 42GHz. However, this invention merely uses silver-plated copper foil as the shielding layer to enhance the shielding effect of the signal cable, but it does not improve the signal transmission capability of the cable core, nor does it improve the mechanical strength of the core. Summary of the Invention

[0003] Design objective: To overcome the shortcomings of the prior art and design a high-speed cable that can effectively improve both the bending resistance and transmission efficiency of the core wire.

[0004] Design Scheme: To achieve the above design objectives, this utility model features the following structural design: 1. The cross-section of the cable core is designed with multiple concave arc grooves (see...). Figure 1The design of the PE film spirally pressed onto the aluminum foil shielding layer is one of the technical features of this utility model. The purpose of this design is that when the cable core surface (longitudinally) has a concave-convex annular structure, it is equivalent to having multiple reinforcing ribs on the cable core surface. These reinforcing ribs effectively improve the mechanical strength of the core wire, while the longitudinal grooves between the reinforcing ribs provide space for the cable core wire to bend, thus resulting in excellent bending resistance. 2. The design of the PE film spirally pressed onto the aluminum foil shielding layer is another technical feature of this utility model. The purpose of this design is that a modified EVA hot melt adhesive is applied to the surface of the PE film that contacts the silicone sheath. Therefore, when the PE film is spirally wound onto the surface of the aluminum foil in a vacuum environment, it can form an oxygen-free (air-free, gas-free) sealed adhesive bond with the aluminum foil surface, while the aluminum foil shielding layer blocks external noise interference to the high-speed transmission signal of the core wire. 3. The design of the PET film spirally pressed onto the aluminum foil shielding layer is a third technical feature of this utility model. The purpose of this design is that the modified EVA hot melt adhesive is applied to the side of the aluminum foil that contacts the PET film. Therefore, when the aluminum foil is spirally wound onto the PET film surface in a vacuum environment, an oxygen-free (air-free, gas-free) sealed adhesive bond is formed between the aluminum foil layer and the PET film layer. This not only protects the aluminum foil layer but also reliably blocks external noise from interfering with the high-speed transmission signal of the core wire. 4. The design of spirally pressing and wrapping PET film on the cable (silicone sheath) is the fourth technical feature of this utility model. The purpose of this design is that the modified EVA hot melt adhesive is applied to the side of the PET film that contacts the silicone sheath. Therefore, when the PET film is spirally wound onto the surface of the silicone sheath in a vacuum environment, an oxygen-free (air-free, gas-free) sealed adhesive bond is formed between the PET film and the silicone sheath surface. 5. The design of the convex and concave strips on the surface of the cable core wire after being covered with vulcanized silicone to form a matching concave-convex cable structure after being covered with vulcanized silicone is the fifth technical feature of this utility model. The purpose of this design is that after the cable core is covered with silicone rubber, the core is firmly positioned by the silicone rubber sleeve, without any air gaps for rotation. Simultaneously, due to the vacuum wrapping method used when covering the core with silicone rubber, the core and the silicone rubber sleeve are in an oxygen-free (air-free, gas-free) sealed fit. 6. The aluminum foil design employs a gapless aluminum foil design, which is the sixth technical feature of this utility model. The purpose of this design is that when high-speed cables use gapless aluminum foil as a shielding layer, the aluminum foil thickness is between 0.005mm and 0.05mm. Due to the limitations of the rolling process, there are air gaps on the aluminum foil surface that are invisible to the naked eye. The presence of these air gaps directly affects the effectiveness of noise shielding. This utility model uses nano-sized aluminum powder smaller than the air gap pores to treat the aluminum foil surface, so that all the air gap pores in the aluminum foil surface are repaired by the nano-sized aluminum foil, resulting in a gapless aluminum foil.

[0005] Technical solution: A high-speed cable includes a cable core wire. The cross-section of the cable core wire has multiple concave arc grooves. The cable core wire has a silicone core wire sleeve, and the grooves and protrusions on the inner wall of the silicone core wire sleeve match the protrusions and grooves on the surface of the core wire to form a cable wire. The surface of the cable wire has a PET film layer, an aluminum foil shielding layer on the PET film layer, and a PE film layer on the aluminum foil shielding layer.

[0006] Compared with the prior art, this utility model has two advantages: First, it not only fully meets but also exceeds the technical requirements of the core wires required for high-speed cables. The high-speed cables it produces not only have strong high-speed signal transmission capabilities, but the signals transmitted at high speeds are also almost unaffected by external noise interference. Second, it has excellent mechanical properties and excellent bending and folding resistance. No cracking, damage, or core wire breakage was found in 10,000 bending tests. Attached Figure Description

[0007] Figure 1 This is a cross-sectional diagram of a high-speed cable. Detailed Implementation

[0008] Example 1: Refer to Appendix Figure 1 A high-speed cable includes a cable core 1, i.e., a copper core wire, used for transmitting data signals or current signals. The cross-section of the cable core 1 has multiple symmetrical concave arc grooves. The cable core is covered with vulcanized silicone to form a concave-convex matching cable 1 and a silicone core sleeve 2. A PET film layer 3 is spirally wound around the cable core, and a gapless aluminum foil shielding layer 4 is spirally wound around the PET film layer. A PE film layer 5 is spirally wound around the gapless aluminum foil shielding layer 4. The cable core 1 and the silicone sleeve are in an oxygen-free sealed fit. The PET film layer 3 on the cable surface is in an oxygen-free sealed fit with the cable surface. The gapless aluminum foil shielding layer and the PET film layer 3 are in an oxygen-free sealed fit. The PE film layer and the gapless aluminum foil shielding layer are in an oxygen-free sealed fit.

[0009] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of this utility model, these textual descriptions are merely simple textual descriptions of the design concept of this utility model, and not limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model shall fall within the protection scope of this utility model.

Claims

1. A high-speed cable, comprising a cable core (1), characterized in that: The cross-section of the cable core (1) is symmetrical with multiple concave arc grooves. The cable core has a silicone core sleeve (2), and the grooves and protrusions on the inner wall of the silicone core sleeve match the protrusions and grooves on the surface of the core to form a cable. There is a PET film layer (3) on the surface of the cable. There is an aluminum foil shielding layer (4) on the PET film layer. There is a PE film layer (5) on the aluminum foil shielding layer (4).

2. The high-speed cable according to claim 1, characterized in that: The cable core (1) and the silicone sheath are sealed together in an oxygen-free environment.

3. The high-speed cable according to claim 1, characterized in that: The PET film layer (3) on the cable surface is oxygen-free and sealed to the cable surface.

4. The high-speed cable according to claim 1, characterized in that: The PE film layer and the air-gap-free aluminum foil shielding layer are oxygen-free and sealed together.

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