Environment-friendly high-frequency signal transmission line

Abstract

The utility model provides an environmental protection high frequency signal transmission line. The utility model discloses solve the problem that current high frequency signal transmission line product can not satisfy environmental protection and performance requirement simultaneously. It includes conductor, insulating layer, the conductor has at least two, and each conductor is covered with insulating layer outside, foaming layer, different insulating layer is wrapped and makes the outer surface of adjacent insulating layer meet, and the first interval is formed between different insulating layer and foaming layer, and the first interval is along the axial direction of conductor setting, middle layer, the setting of foaming layer is covered outside, double -sided copper foil layer, is set in the outside of middle layer, shielding layer, is covered in the outside of double -sided copper foil layer, is used for the signal interference of isolation outside, sheath layer, covers the outside of shielding layer. The utility model sets up foaming layer and the first interval, has improved dielectric constant, has promoted the anti attenuation performance of product, has improved the overall performance and reliability of cable significantly. The utility model also has the advantages of simple structure, low cost, long service life etc.

Description

Technical Field

[0001] This utility model relates to a signal transmission line, specifically an environmentally friendly high-frequency signal transmission line. Background Technology

[0002] High-frequency signal transmission lines (also known as Mini Serial Attached SCSI cables) are cables used for data transmission, primarily for connecting storage devices such as hard disk drives, RAID arrays, and host bus adapters (HBAs). Existing high-frequency signal transmission lines offer high transmission speeds and simple structures. Their non-metallic components are typically made of materials such as fluorinated ethylene propylene copolymer (FEP, Fluorinated Ethylene Propylene Copolymer, Polytetrafluoroethylene Propylene) and polytetrafluoroethylene (PTFE). However, PFAS materials (PFAS stands for Per- and polyfluoroalkyl substances, meaning perfluorinated compounds, such as PTFE) are less environmentally friendly and do not meet environmental protection requirements. Simply replacing the material does not achieve the desired product performance. Utility Model Content

[0003] To address the problem that existing high-frequency signal transmission line products in the background art cannot simultaneously meet environmental protection and performance requirements, this utility model provides an environmentally friendly high-frequency signal transmission line.

[0004] The technical solution of this utility model is: an environmentally friendly high-frequency signal transmission line, including a conductor, and further comprising:

[0005] The conductor has at least two conductors, and each conductor is covered with an insulating layer.

[0006] A foam layer encapsulates different insulating layers, causing the outer surfaces of adjacent insulating layers to abut against each other; a first gap is formed between the different insulating layers and the foam layer, and the first gap is arranged along the axial direction of the conductor;

[0007] The middle layer is set to cover the foam layer;

[0008] A double-sided copper foil layer is located on the outside of the middle layer;

[0009] The shielding layer, which covers the outside of the double-sided copper foil layer, is used to isolate external signal interference;

[0010] The sheath layer covers the outside of the shielding layer.

[0011] As a further improvement of this utility model, a drainage line is provided between the intermediate layer and the double-sided copper foil layer, and the intermediate layer, the double-sided copper foil layer and the drainage line cooperate with each other to form a second gap.

[0012] As a further improvement of this utility model, the outer surface of the middle layer is recessed to form a groove, and the drainage line is located inside the groove.

[0013] As a further improvement of this utility model, there are two drainage lines, and the lines connecting the centers of the different drainage lines and the centers of the different conductors are on the same straight line.

[0014] As a further improvement of this utility model, the conductor is integrally formed using silver-plated copper, and the drain line is integrally formed using tin-plated copper.

[0015] As a further improvement of this utility model, the foamed layer has two layers, and the foamed layer is made of PP material through foaming.

[0016] As a further improvement of this utility model, there are two conductors, and the insulating layer covers the different conductors. The insulating layer is integrally molded from LLDPE material.

[0017] As a further improvement of this utility model, the middle liner is integrally molded from LLDPE material.

[0018] As a further improvement of this utility model, at least one layer of aluminum foil is wrapped around the double-sided copper foil layer to form the shielding layer.

[0019] As a further improvement of this utility model, the shielding layer is wrapped with flame-retardant Mylar to form the sheath layer.

[0020] The beneficial effects of this invention are that the addition of a foaming layer and a first gap improves the dielectric constant, enhances the product's anti-attenuation performance, and significantly improves the overall performance and reliability of the cable. This invention also has advantages such as simple structure, low cost, and long service life. Attached Figure Description

[0021] Appendix Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0022] In the diagram, 1 is the conductor; 2 is the insulating layer; 3 is the foaming layer; 31 is the first gap; 4 is the middle jacket layer; 41 is the second gap; 42 is the groove; 5 is the double-sided copper foil layer; 6 is the shielding layer; 7 is the sheath layer; and 8 is the drain line. Detailed Implementation

[0023] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0024] Depend onFigure 1 As shown, an environmentally friendly high-frequency signal transmission line includes a conductor 1, and further includes:

[0025] Insulating layer 2, wherein there are at least two conductors 1, and each conductor 1 is covered with insulating layer 2;

[0026] The foam layer 3 encloses the different insulating layers 2 and makes the outer surfaces of adjacent insulating layers 2 abut against each other; a first gap 31 is formed between the different insulating layers 2 and the foam layer 3, and the first gap 31 is arranged along the axial direction of the conductor 1;

[0027] The middle layer 4 is provided to cover the foam layer 3;

[0028] Double-sided copper foil layer 5 is located on the outside of the middle layer 4;

[0029] The shielding layer 6 is wrapped around the outside of the double-sided copper foil layer 5 and is used to isolate external signal interference.

[0030] The sheath layer 7 covers the shielding layer 6. The beneficial effects of this invention are that the foaming layer and the first gap improve the dielectric constant, enhance the product's anti-attenuation performance, and significantly improve the overall performance and reliability of the cable. This invention also has the advantages of simple structure, low cost, and long service life. At a frequency of 16 GHz, this product exhibits attenuation of at least 5.2 dB. The cable maintains good linearity across a frequency range up to 30 GHz. These properties were measured using a 3-meter test cable. This high-frequency signal transmission line is environmentally friendly, has a wide range of applications, is lightweight, has strong bending resistance, strong signal transmission capability, and good flame retardant properties.

[0031] A drainage line 8 is provided between the intermediate layer 4 and the double-sided copper foil layer 5. The intermediate layer 4, the double-sided copper foil layer 5, and the drainage line 8 cooperate to form a second gap 41. Specifically, the first and second gaps are hollow, which provides transmission performance, improves the dielectric constant, and enhances anti-attenuation performance. The drainage line provides electrostatic protection and electromagnetic interference shielding for the wire.

[0032] The outer surface of the inner layer 4 is recessed to form a groove 42, and the drainage line 8 is disposed inside the groove 42. Specifically, there are two drainage lines 8, and the lines connecting the centers of the different drainage lines 8 to the centers of the different conductors 1 are on the same straight line. This structure limits the drainage lines and prevents displacement. The structure is simple and the limiting is reliable. The groove is usually semi-circular or arc-shaped.

[0033] The conductor 1 is integrally formed from silver-plated copper, and the drain line 8 is integrally formed from tin-plated copper. Silver-plated copper conductors have high oxidation resistance, good conductivity, and strong weldability.

[0034] The foam layer 3 has two layers and is made of PP material (Polypropylene). Two parallel insulated conductors are coated with two layers of hot-melt PP foam film and then extruded. This effectively protects the insulation layer, enhances mechanical strength, and provides multiple functions such as heat insulation, corrosion resistance, aging prevention, shielding, and insulation, significantly improving the overall performance and reliability of the cable.

[0035] The aforementioned conductor 1 consists of two strands, and the insulating layer 2 covers each conductor 1. The insulating layer 2 is integrally molded using LLDPE material (linear low-density polyethylene (LLDPE) is a molecular structure formed by copolymerizing ethylene with a small amount of α-olefins on the main chain of linear ethylene, with very short comonomer branches). Specifically, the inner sheath 4 is integrally molded using LLDPE material. The insulating layer uses LLDPE material, which has high crystallinity, high strength, toughness, and rigidity, providing good insulation performance and aging resistance, laying the foundation for the stability of signal transmission. This utility model uses environmentally friendly and low-cost materials, does not use PFAS materials, is more environmentally friendly, and is a practitioner of the concept of green cables. This utility model has a small wire diameter, small size, and light weight, and can be used in a wide range of scenarios.

[0036] The double-sided copper foil layer 5 is wrapped with at least one layer of aluminum foil to form the shielding layer 6. The double-sided copper foil layer makes the wrapping flexible without increasing product rigidity, provides high tensile strength, and the excellent conductivity of copper effectively prevents internal signals from being emitted. Furthermore, it can withstand high operating temperatures, ensuring the stability of the wire in high-temperature environments. The aluminum foil shielding layer, with an overlap rate of 25%, effectively isolates external signal interference. This invention exhibits strong bending resistance; the impedance change of the wire when folded after being wrapped around an iron rod with a diameter equal to one wire is less than 3.5 ohms.

[0037] The shielding layer 6 is wrapped with flame-retardant Mylar to form the sheath layer 7. This flame-retardant Mylar material has certain water-resistant and flame-retardant effects; adding this wrapping tape can prevent moisture from damaging the wire insulation in humid environments. This product has good flame-retardant properties and meets VW-1 requirements.

[0038] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modification that utilizes the inventive concept will be included within the scope of protection of this utility model patent.

Claims

1. An environmentally friendly high-frequency signal transmission line, comprising a conductor (1), characterized in that: Also includes: The insulating layer (2) is provided. The conductor (1) has at least two conductors, and each conductor (1) is covered with an insulating layer (2). The foam layer (3) wraps around the different insulating layers (2) and makes the outer surfaces of adjacent insulating layers (2) abut against each other; a first gap (31) is formed between the different insulating layers (2) and the foam layer (3), and the first gap (31) is arranged along the axial direction of the conductor (1); The middle layer (4) is provided to cover the foam layer (3); A double-sided copper foil layer (5) is disposed on the outside of the middle layer (4); The shielding layer (6) is wrapped around the outside of the double-sided copper foil layer (5) to isolate external signal interference; The sheath layer (7) covers the outside of the shielding layer (6).

2. The environmentally friendly high-frequency signal transmission line according to claim 1, characterized in that... A drainage line (8) is provided between the intermediate layer (4) and the double-sided copper foil layer (5), and the intermediate layer (4), the double-sided copper foil layer (5) and the drainage line (8) cooperate to form a second gap (41).

3. The environmentally friendly high-frequency signal transmission line according to claim 2, characterized in that... The outer surface of the inner layer (4) is recessed to form a groove (42), and the drainage line (8) is located inside the groove (42).

4. The environmentally friendly high-frequency signal transmission line according to claim 2, characterized in that... There are two drainage lines (8), and the lines connecting the centers of the different drainage lines (8) and the centers of the different conductors (1) are on the same straight line.

5. The environmentally friendly high-frequency signal transmission line according to claim 2, characterized in that... The conductor (1) is integrally formed with silver-plated copper, and the drain line (8) is integrally formed with tin-plated copper.

6. The environmentally friendly high-frequency signal transmission line according to claim 1, characterized in that... The foamed layer (3) has two layers and is made of PP material through foaming.

7. The environmentally friendly high-frequency signal transmission line according to claim 1, characterized in that... The conductor (1) has two conductors, and the insulating layer (2) covers the different conductors (1). The insulating layer (2) is integrally formed using LLDPE material.

8. The environmentally friendly high-frequency signal transmission line according to claim 1, characterized in that... The middle layer (4) is integrally molded using LLDPE material.

9. The environmentally friendly high-frequency signal transmission line according to claim 1, characterized in that... The double-sided copper foil layer (5) is wrapped with at least one layer of aluminum foil to form the shielding layer (6).

10. An environmentally friendly high-frequency signal transmission line according to claim 9, characterized in that... The shielding layer (6) is wrapped with flame-retardant Mylar to form the sheath layer (7).

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