High-speed signal transmission cable

Abstract

The utility model relates to a high-speed signal transmission cable which not only can effectively improve the signal transmission capability of a cable core, but also can effectively improve the anti-bending effect of the cable core, and comprises a cable core wire, the cross section of the cable core wire is of a plum blossom-shaped structure; the cable core wire is provided with a silica gel core wire sleeve, the section of the inner wall of the silica gel core wire sleeve is of a convex-concave plum blossom-shaped structure and is matched with the convex-concave plum blossom-shaped structure on the cross section of the cable core wire to form the cable wire, a PET film layer is arranged on the surface of the cable wire, an aluminum foil shielding layer is arranged on the PET film layer, and a PE film layer is arranged on the aluminum foil shielding layer. The high-speed cable has the advantages that: 1, the high-speed cable can completely meet and exceed the technical requirements of a cable core required by a high-speed cable, the high-speed cable manufactured by the high-speed cable has strong high-speed signal transmission capability, and signals in high-speed transmission are hardly interfered by external clutters; and secondly, 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 not found in countless bending tests.

Description

Technical Field

[0001] This utility model relates to a high-speed signal transmission 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, entitled "Cable," describes an invention whose main objective is to provide a cable with good shielding and stable signal transmission capabilities. 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 to existing technologies, 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 42 GHz. 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 to design a high-speed signal transmission cable with a staggered core wire 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 in a quincunx pattern (see...). Figure 1The design of the core wire (with a quincunx pattern) is one of the technical features of this utility model. The purpose of this design is that when the cable core wire surface (longitudinally) has a quincunx structure, it is equivalent to having multiple reinforcing ribs (petals) on the cable core wire 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 cable structure formed by the quincunx pattern on the core wire surface after the cable core wire is covered with silicone rubber, and the recessed areas between the quincunx patterns being covered with silicone rubber, is the second technical feature of this utility model. The purpose of this design is that when the cable core wire is covered with silicone rubber, the core wire is firmly positioned by the silicone rubber sleeve, without any air gaps for rotation. Simultaneously, due to the vacuum covering method used when covering the core wire with silicone rubber, the core wire and the silicone rubber sleeve are in an oxygen-free (air-free, gas-free) sealed fit. 3. The design of the cable wire (silicone rubber sleeve) with a spiral edge wrapped with PET film is the third technical feature of this utility model. The purpose of this design is that: A modified EVA hot melt adhesive is coated on the surface 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. 4. The design of the PET film spirally pressed and wrapped with a gapless aluminum foil shielding layer is the fourth technical feature of this utility model. The purpose of this design is that: The modified EVA hot melt adhesive is coated on the side of the gapless aluminum foil that contacts the PET film. Therefore, when the gapless aluminum foil is spirally wound onto the surface of the PET film in a vacuum environment, an oxygen-free (air-free, gas-free) sealed adhesive bond is formed between the gapless aluminum foil layer and the PET film layer. This not only protects the gapless aluminum foil layer but also reliably blocks external noise interference to the high-speed transmission signal of the core wire. 5. The design of the gapless aluminum foil shielding layer spirally pressed and wrapped with PE film is the fifth technical feature of this utility model. The purpose of this design is as follows: In this invention, a modified EVA hot melt adhesive is coated on the surface where the PE film and the silicone sheath contact. Therefore, when the PE film is spirally wound onto the surface of the gapless aluminum foil in a vacuum environment, it can form an oxygen-free (air-free, gas-free) sealed adhesive bond with the surface of the gapless aluminum foil. The gapless aluminum foil shielding layer blocks external noise interference to the high-speed transmission signal of the core wire. 6. The design that the width of the concave arc is greater than the width of the plum blossom petals is the sixth technical feature of this invention. The purpose of this design is that when the width of the concave arc opening is greater than the width of the convex arc, it can prevent the insulation sleeves of two core wires from forming a plum blossom-shaped insulation sheath. When multiple plum blossom-shaped insulation sheaths are used to form a cable, the cables can be arranged in an interlaced manner, reducing the size (or diameter) of the assembled cable. 7. The design of the gapless aluminum foil is the seventh technical feature of this invention.The purpose of this design is as follows: When high-speed cables use aluminum foil as the shielding layer, the thickness of the aluminum foil 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 invention uses nano-sized aluminum powder, smaller than the air gaps, to treat the aluminum foil surface, so that all the air gaps in the aluminum foil surface are repaired by the nano-sized aluminum powder, resulting in an air gap-free aluminum foil.

[0005] Technical solution: A high-speed signal transmission cable includes a cable core wire, the cross-section of which has a quincunx-shaped structure, the cable core wire has a silicone core wire sleeve, and the inner wall of the silicone core wire sleeve has a convex-concave quincunx-shaped structure that matches the convex-concave quincunx-shaped structure on the cross-section of the cable core wire to form a cable wire, a PET film layer on the surface of the cable wire, 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 wire core 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 speed 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 countless bending tests. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the cross-section of a stylus wire used in high-speed signal transmission cables. Detailed Implementation

[0008] Example 1: Refer to Appendix Figure 1 A high-speed signal transmission cable includes a cable core 1 with a quincunx-shaped cross-section. The cable core is covered by a silicone core sleeve 5, the inner wall of which has a convex-concave quincunx-shaped cross-section matching the convex-concave quincunx-shaped cross-section of the cable core. A PET film layer 2 is present on the cable surface, followed by an aluminum foil shielding layer 3, and then a PE film layer 4. The cable core 1 and the silicone sheath are in an oxygen-free, sealed fit. The PET film layer 2 on the cable surface is also in an oxygen-free, sealed fit. The air-gap-free aluminum foil shielding layer 3 is in an oxygen-free, sealed fit with the PET film layer 2. The PE film layer 4 is in an oxygen-free, sealed fit with the air-gap-free aluminum foil shielding layer 3.

[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 signal transmission cable, comprising cable core (1), characterized in that: The cross-section of the cable core (1) is a plum blossom-shaped structure. The cable core has a silicone core sleeve (5) and the inner wall of the silicone core sleeve has a convex and concave plum blossom-shaped structure that matches the convex and concave plum blossom-shaped structure on the cross-section of the cable core to form a cable. There is a PET film layer (2) on the surface of the cable, an aluminum foil shielding layer (3) on the PET film layer, and a PE film layer (4) on the aluminum foil shielding layer (3).

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

3. The high-speed signal transmission cable according to claim 1, characterized in that: The PET film layer (2) on the cable surface is oxygen-free and sealed to the cable surface.

4. The high-speed signal transmission cable according to claim 1, characterized in that: The aluminum foil shielding layer (3) and the PET film layer (2) are oxygen-free sealed together.

5. The high-speed signal transmission cable according to claim 1, characterized in that: The PE film layer (4) and the aluminum foil shielding layer (3) are oxygen-free and sealed together.

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