Core wire and cable having the same

Abstract

The utility model relates to a core wire and a cable having the same, the cable comprises a core wire and a metal shielding layer wrapped outside the core wire, the core wire comprises a pair of inner conductors and an insulating layer wrapped outside the pair of inner conductors, the insulating layer is made of a solid material, the outer surface of the insulating layer is in a concave-convex shape, and the outer surface of the insulating layer is in a concave-convex shape. And an air gap is formed between the shielding layer and the insulating layer, so that an air gap is formed between the shielding layer and the insulating layer. The cable provided by the utility model is lower in dielectric constant and more stable in signal transmission.

Description

Technical Field

[0001] The utility model relates to a core wire and a cable with the core wire, in particular to a core wire for transmitting high-frequency signals and a cable with the core wire. Background Art

[0002] With the development and popularization of electronic technology products, signal cables, as a tool for transmitting signals, are widely used in fields such as household appliances, instruments, automation equipment, data centers, servers, switches, data centers, cloud computing, and 5G. The core wire of a cable generally includes an inner conductor for transmitting signals and an insulating layer formed outside the inner conductor. Existing insulating layers commonly use foaming technology to reduce the dielectric coefficient and size of the cable. However, in traditional foaming, the foaming is uneven, which affects the stability of high-frequency signal transmission.

[0003] Therefore, it is necessary to provide a core wire and a cable with the core wire, where the cable has a lower dielectric constant and more stable signal transmission. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a core wire, so that the transmission of high-speed signals in the cable with the core wire is more stable.

[0005] To achieve the above purpose, the utility model can adopt the following technical solutions: A core wire includes a pair of inner conductors and an insulating layer coated outside the pair of inner conductors, and the outer surface of the insulating layer is concave-convex.

[0006] The main purpose of the utility model is to provide a cable, so that the transmission of high-speed signals in the cable is more stable.

[0007] To achieve the above purpose, the utility model can adopt the following technical solutions: A cable includes a core wire and a metal shielding layer wound around the core wire. The core wire includes a pair of inner conductors and an insulating layer coated outside the pair of inner conductors. The insulating layer is made of solid material, and the outer surface of the insulating layer is concave-convex, so that an air gap is formed between the shielding layer and the insulating layer.

[0008] Compared with the prior art, the utility model has the following beneficial effects: The outer surface of the insulating layer of the core wire of the utility model and the cable with the core wire is concave-convex, so that an air gap is formed between the shielding layer and the insulating layer. The cable has a lower dielectric constant and more stable signal transmission. Description of the Drawings

[0009] Figure 1 It is a cross-sectional view of the first embodiment of the core wire conforming to the utility model.

[0010] Figure 2 It is a cross-sectional view of the second embodiment of the core wire conforming to the utility model.

[0011] Figure 3 It is a cross-sectional view of the third embodiment of the core wire of the present utility model.

[0012] Figure 4 It is a cross-sectional view of the fourth embodiment of the core wire of the present utility model.

[0013] Figure 5 It is a cross-sectional view of the fifth embodiment of the core wire of the present utility model.

[0014] Figure 6 It is a cross-sectional view of the sixth embodiment of the core wire of the present utility model.

[0015] Figure 7 It is a cross-sectional view of a cable using the core wire of the second embodiment of the present utility model.

[0016] Description of main component symbols

[0017] Core wires 100, 200, 300, 400, 500, 600

[0018] Inner conductors 11, 31, 51

[0019] Insulation layers 12, 22, 32, 42, 52, 62, 72

[0020] Wave crests 121, 221, 421, 621

[0021] Wave troughs 123, 223, 423, 623

[0022] First insulation layers 311, 411, 511

[0023] Second insulation layers 312, 412, 512, 612

[0024] Connection part 310

[0025] Cable 700

[0026] Shielding layer 73

[0027] Air gap 74 Detailed implementation manners

[0028] Please refer to Figure 1As shown, it is the first embodiment of the core wire 100 that conforms to the present utility model. The core wire 100 includes a pair of inner conductors 11, an insulating layer 12 coated outside the pair of inner conductors 11, and the outer surface of the insulating layer 12 is concave and convex. The concave and convex shape is a wavy shape with serrations. The wavy shape includes wave crests 121 protruding outward and wave troughs 123 recessed inward. The wave crests 121 and wave troughs 123 are evenly arranged along the surface of the insulating layer 12. Each wave crest 121 has the same shape, and each wave trough 123 has the same shape. The insulating layer 12 is made of solid material, so that the mechanical strength inside the core wire 100 is better.

[0029] Please refer to Figure 2 As shown, it is the first embodiment of the core wire 200 that conforms to the present utility model. Compared with the first embodiment, in this embodiment, the sizes of the wave crests 221 and wave troughs 223 on the insulating layer 22 are larger. The wave crest interval and wave trough depth of the wave can be freely adjusted according to requirements.

[0030] Please refer to Figure 3 As shown, it is the third embodiment of the core wire 300 that conforms to the present utility model. Compared with the first embodiment, in this embodiment, the insulating layer 32 includes a first insulating layer 311 coated outside the inner conductor 31 and a second insulating layer 312 coated outside the first insulating layer 311. The material of the first insulating layer 311 can be set to a material different from that of the second insulating layer 312. The first insulating layer 311 is co-formed and coated outside a pair of inner conductors 31 by an extrusion molding method. The first insulating layer 311 is formed in an 8-shaped outside the pair of inner conductors 31. The first insulating layer 311 includes a connecting portion 310 connected between the pair of inner conductors 31.

[0031] Please refer to Figure 4 As shown, it is the fourth embodiment of the core wire 400 that conforms to the present utility model. Compared with the third embodiment, in this embodiment, the sizes of the wave crests 421 and wave troughs 423 outside the second insulating layer 412 of the insulating layer 42 are larger, and the depth of the recessed wave trough 423 is less than the outer surface of the first insulating layer 411.

[0032] Please refer to Figure 5 As shown, it is the fifth embodiment of the core wire 500 that conforms to the present utility model. Compared with the third embodiment, in this embodiment, the first insulating layer 511 of the insulating layer 52 is respectively extruded and formed outside the corresponding inner conductor 51, and the surfaces of the first insulating layers 511 outside the pair of inner conductors 51 are in contact with each other. The second insulating layer 512 is commonly coated outside the first insulating layer 511.

[0033] Please refer to Figure 6As shown, it is the sixth embodiment of the core wire 600 that conforms to the present utility model. Compared with the fifth embodiment, in this embodiment, the sizes of the wave peaks 621 and wave valleys 623 on the outside of the second insulating layer 612 of the insulating layer 62 are larger, and the depth of the depression of the wave valley 623 is less than the outer surface of the first insulating layer 611.

[0034] Please refer to Figure 7 As shown, it is the cable 700 of the second embodiment applying the core wire of the present utility model. In the cable 700, a metal shielding layer 73 is covered outside the insulating layer 72. Since the outer surface of the insulating layer 72 of this core wire is concave-convex, an air gap 74 is formed between the shielding layer 73 and the wave valley of the insulating layer 72.

[0035] For the cable made of the core wire of the present utility model, when winding the shielding layer, an air gap is formed between the metal layer and the concave part of the insulating layer, which can reduce the relative dielectric constant of the insulating layer; reduce the capacitance effect; the dielectric constant of air is 1-1.2, which is lower than that of other materials, thereby accelerating the electromagnetic wave transmission rate, reducing the attenuation loss of the cable at high frequencies, and improving the overall electrical performance of the cable. And the present utility model makes the proportion of the hollow air holes tend to be stable through the precision processing of the insulating layer by the extrusion die, which has great advantages compared with the difficult debugging of the pore uniformity of the traditional insulating layer with a foaming structure.

[0036] However, it can be understood that although many features and advantages of the present utility model have been mentioned in the previous description, including some details of the structure and function, the present utility model is only illustrative, and many details can be changed, especially in the shape, size and arrangement of the components within the scope of the principle represented by the broad general meaning of the terms expressed in the appended claims.

Claims

1. A core wire comprising a pair of inner conductors and an insulating layer covering the pair of inner conductors, characterized in that: The outer surface of the insulating layer is concave-convex. The core wire is used for transmitting high-speed signal cables. The cable includes a shielding layer, which is coated on the outside of the core wire so that an air gap is formed between the shielding layer and the concave part of the insulating layer.

2. The core wire according to claim 1, characterized in that: The concavoconvex shape is wavy, including outwardly protruding crests and inwardly recessed troughs, each crest has the same shape, each trough has the same shape, and the crests and troughs are evenly arranged along the surface of the insulating layer.

3. The core wire according to claim 2, characterized in that: The insulating layer includes a first insulating layer wrapped around the inner conductor and a second insulating layer wrapped around the first insulating layer.

4. The core wire according to claim 3, characterized in that: The material of the first insulating layer is different from the material of the second insulating layer.

5. The core wire according to claim 3, characterized in that: The first insulating layer is formed together outside the pair of inner conductors, and the first insulating layer includes a connecting portion connected between the pair of inner conductors.

6. The core wire according to claim 3, characterized in that: The first insulating layers are respectively extruded and molded outside the corresponding inner conductors, and surfaces of the first insulating layers outside a pair of inner conductors are in contact with each other.

7. The core wire according to claim 3, characterized in that: The depth of the valley is smaller than the outer surface of the first insulating layer.

8. The core wire according to claim 1, characterized in that: The insulating layer is made of solid material.

9. A cable comprising a core wire and a metal shielding layer wrapped around the core wire, wherein the core wire comprises a pair of inner conductors and an insulating layer wrapped around the pair of inner conductors, characterized in that: The insulating layer is made of solid material, and the outer surface of the insulating layer is concave-convex, so that an air gap is formed between the shielding layer and the insulating layer.

10. The cable according to claim 9, characterized in that: The concavoconvex shape is wavy, and the wavy shape includes outwardly protruding crests and inwardly recessed troughs. The crests and troughs are evenly arranged along the surface of the insulating layer, and each crest has the same shape, and each trough has the same shape.

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