A flexible ultra-thin coaxial line

Abstract

The utility model discloses a flexible ultra-fine coaxial line, comprising a coaxial line main body and connectors at two ends, wherein a harness sleeve is arranged on the coaxial line main body, and bending protection ends are arranged at both ends of the harness sleeve, and the coaxial line main body comprises a central conductor, an insulating layer, an outer conductor, a second insulating layer, a flexible surface layer and an outer sheath, and the insulating layer is coated on the outer surface of the central conductor; the beneficial effects of the utility model are as follows: the internal structure of the traditional ultra-fine coaxial line is still retained, and a central axis and an auxiliary axis are added to the seven main conductor lines to improve the axis rigidity, and the surface toughness is enhanced by adding a flexible surface layer to the outer layer, so that while retaining the flexible function of the ultra-fine coaxial line itself, the wire material is made more stable, and is not easy to break or be damaged when subjected to external tension and repeated bending, and is not easy to cause failure when put into use in equipment.

Description

Technical Field

[0001] The utility model relates to the field of connecting line manufacturing, in particular to a flexible and extremely fine coaxial line. Background Art

[0002] Ultra-fine coaxial line is a special type of coaxial line with a very small outer diameter, usually at the millimeter or sub-millimeter level. Ultra-fine coaxial line is usually used for high-frequency signal transmission, such as microwave communication, radar system and satellite communication. The structure of ultra-fine coaxial line consists of inner conductor, insulation layer and outer conductor. The inner conductor is a thin wire, usually made of conductive materials such as copper or silver, used to transmit signals. The insulation layer is a layer of insulating material used to isolate the inner conductor and the outer conductor to prevent signal leakage and interference. The outer conductor is a metal shielding layer used to shield external interference signals.

[0003] The reason why ultra-fine coaxial cable is usually used is that it has higher flexibility than shielded FPC / FFC and can maintain stable electrical characteristics even when bent, but ultra-fine coaxial cable is more easily damaged than ordinary coaxial cable. The diameter of ultra-fine coaxial cable is smaller, and the wire is more fragile. It is easy to break due to external pressure, tension or repeated bending, resulting in wire damage. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] The technical problem to be solved by the utility model is that the ultra-thin coaxial line is more easily damaged than the ordinary coaxial line. The diameter of the ultra-thin coaxial line is smaller, the wire is more fragile, and it is easy to break after being subjected to external pressure, tension or repeated bending, resulting in wire damage.

[0006] (II) Technical solution

[0007] In order to solve the above problems, the utility model provides the following technical solutions:

[0008] A flexible ultra-fine coaxial cable comprises a coaxial cable body and connectors at both ends, the coaxial cable body is provided with a wiring harness sleeve, and both ends of the wiring harness sleeve are provided with bending protection ends, the coaxial cable body comprises a center conductor, an insulating layer, an outer conductor, a second insulating layer, a flexible surface layer and an outer sheath, the insulating layer is coated on the outer surface of the center conductor, the center conductor comprises a main conductor wire, a center axis and an auxiliary axis, the outer conductor is arranged on the outer surface of the insulating layer, the second insulating layer is coated on the outer surface of the outer conductor, the outer conductor is arranged between the insulating layer and the second insulating layer, the flexible surface layer is arranged on the outer surface of the second insulating layer, and the outer sheath is coated on the outer surface of the flexible surface layer.

[0009] Furthermore, two ends of the coaxial line body are connected to the two-end connectors, and the two-end connectors are provided with protective covers.

[0010] Furthermore, the wiring harness sleeve is made of foam material, and the bent protection end is fixedly bonded to both ends of the wiring harness sleeve by adhesive.

[0011] Furthermore, the bending protection end is made of soft rubber material.

[0012] Furthermore, the central axis is arranged at the center of the conductor line, and the auxiliary axis is arranged between the conductor line and the insulating layer.

[0013] Furthermore, the central shaft and the auxiliary shaft are made of the same material, which is steel wire, and the diameter of the auxiliary shaft is smaller than the diameter of the central conductor.

[0014] Furthermore, the flexible surface layer is made of low-density polyethylene, and a plurality of the flexible surface layers are in strip shape and are arranged along the outer surface of the second insulating layer.

[0015] Furthermore, the outer sheath is made of PVC material, and an anti-slip protrusion is provided at the connection between the wiring harness sleeve and the outer sheath.

[0016] (III) Beneficial effects

[0017] The beneficial effects of the utility model are:

[0018] The internal structure of the traditional ultra-fine coaxial line is still retained, and a central axis and an auxiliary axis are added to the seven main conductor lines to improve the axis stiffness. The surface toughness is enhanced by adding a flexible surface layer to the outer layer. While retaining the flexible function of the ultra-fine coaxial line itself, the wire is made more stable, and is not easy to break or be damaged when subjected to external tension and repeated bending, and is not prone to malfunction when put into use in equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the coaxial line body;

[0021] Markings in the figure: 1-coaxial line body, 2-connectors at both ends, 3-wire harness, 4-bend protection end, 1a-center conductor, 1b-insulating layer, 1c-outer conductor, 1d-second insulating layer, 1e-flexible surface, 1f-outer sheath, 1aa-main conductor, 1ab-center axis, 1ac-auxiliary axis. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] See also Figure 1-2 A flexible ultra-fine coaxial cable shown in the figure includes a coaxial cable body 1 and connectors 2 at both ends. The coaxial cable body 1 is provided with a wiring harness sleeve 3, and both ends of the wiring harness sleeve 3 are provided with bending protection ends 4. The coaxial cable body 1 includes a center conductor 1a, an insulating layer 1b, an outer conductor 1c, a second insulating layer 1d, a flexible surface layer 1e and an outer sheath 1f. The insulating layer 1b is coated on the outer surface of the center conductor 1a. The center conductor 1a includes a main conductor wire 1aa, a center axis 1ab and an auxiliary axis 1ac. The outer conductor 1c is arranged on the outer surface of the insulating layer 1b, and the second insulating layer 1d is coated on the outer surface of the outer conductor 1c. The outer conductor 1c is arranged between the insulating layer 1b and the second insulating layer 1d. The flexible surface layer 1e is arranged on the outer surface of the second insulating layer 1d, and the outer sheath 1f is coated on the outer surface of the flexible surface layer 1e.

[0025] Both ends of the coaxial line body 1 are connected to the connectors 2 at both ends. The connectors 2 at both ends are provided with protective covers. The protective covers are the cover bodies on the connectors 2 at both ends. They are usually closed to protect the terminal rows on the connectors at both ends from being damaged by dust. When in use, the protective covers can be opened for plugging.

[0026] The wiring harness sleeve 3 is made of foam material, and the bending protection end 4 is fixed and bonded to the two ends of the wiring harness sleeve 3 by adhesive. The wiring harness sleeve 3 is used to protect the coaxial cable body 1 and provide external pressure resistance and friction. The bending protection end 4 is at the two ends of the wiring harness sleeve 3, namely the wiring end. After the multiple wires of the coaxial cable body 1 are connected to the connectors 2 at both ends, they enter the bending protection end 4 from the wiring end, and then enter the wiring harness sleeve 3 after passing through the bending protection end 4 for wiring bundling. When the ultra-thin coaxial cable and all connecting wires are connected, the bending amplitude at both ends is the largest. The bending protection end 4 is used to protect the two ends of the wire body from excessive bending and damage.

[0027] The bending protection end 3 is made of soft rubber material, which can effectively protect the outside of the wire body, reduce the bending force, and restore the deformation after the insertion and bending are completed.

[0028] The central axis 1ab is arranged at the center of the conductor wire 1aa, and the auxiliary axis 1ac is arranged between the conductor wire 1aa and the insulating layer 1b. The central axis 1ab and the auxiliary axis 1ac are interspersed in the conductor wire 1aa. The strength of the coaxial cable body 1 is improved through the rigidity of the central axis 1ab, and the overall hardness of the wire body is improved during use. The main function of the central axis 1ab and the auxiliary axis 1ac is to improve the strength, and they do not participate in data transmission. Data transmission is still carried out through the seven conductors of the conductor wire 1aa.

[0029] The central axis 1ab and the auxiliary axis 1ac are made of the same material, which is steel wire. The diameter of the auxiliary axis 1ac is smaller than the diameter of the conductor wire.

[0030] The flexible surface layer 1e is made of low-density polyethylene. Several flexible surface layers 1e are in strip shape and are arranged along the outer surface of the second insulating layer 1d. The flexible surface layer 1e serves as external protection and cooperates with the internal center axis 1ab to improve the strength and surface toughness. When the wire begins to be squeezed and bent, the external structure is the first to be subjected to force. The force on the coaxial cable body 1 is reduced through layer-by-layer filtering of the wire harness sleeve, the bending protection end 4 and the flexible surface layer 1e, and it can be restored after bending to enhance the service life and stability.

[0031] The outer sheath 1f is made of PVC, and an anti-slip protrusion is provided at the connection between the harness sleeve 3 and the outer sheath 1f to make the connection between the harness sleeve 3 and the coaxial line body 1 better and less likely to slip off.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flexible ultra-thin coaxial line, characterized by: The invention comprises a coaxial line body (1) and connectors (2) at both ends; the coaxial line body (1) is provided with a wire harness sleeve (3); both ends of the wire harness sleeve (3) are provided with bending protection ends (4); the coaxial line body (1) comprises a central conductor (1a), an insulating layer (1b), an outer conductor (1c), a second insulating layer (1d), a flexible surface layer (1e) and an outer sheath (1f); the insulating layer (1b) is coated on the outer surface of the central conductor (1a); the central conductor (1a) comprises a main conductor line (1aa), a central axis (1ab) and an auxiliary axis (1ac), the outer conductor (1c) is arranged on the outer surface of the insulating layer (1b), the second insulating layer (1d) is coated on the outer surface of the outer conductor (1c), the outer conductor (1c) is arranged between the insulating layer (1b) and the second insulating layer (1d), the flexible surface layer (1e) is arranged on the outer surface of the second insulating layer (1d), and the outer coating (1f) is coated on the outer surface of the flexible surface layer (1e).

2. The flexible ultra-thin coaxial line according to claim 1, characterized in that: The two ends of the coaxial line body (1) are connected to the two-end connectors (2), and the two-end connectors (2) are provided with protective covers.

3. The flexible ultra-thin coaxial line according to claim 2, characterized in that: The wiring harness sleeve (3) is made of foam material, and the bent protection end (4) is fixedly bonded to two ends of the wiring harness sleeve (3) by adhesive.

4. The flexible ultra-thin coaxial line according to claim 1, characterized in that: The bending protection end (4) is made of soft rubber.

5. The flexible ultra-thin coaxial line according to claim 1, characterized in that: The central axis (1ab) is arranged at the center of the conductor line (1aa), and the auxiliary axis (1ac) is arranged between the conductor line (1aa) and the insulating layer (1b).

6. The flexible ultra-thin coaxial line according to claim 1, characterized in that: The central shaft (1ab) and the auxiliary shaft (1ac) are made of the same material, both are steel wires, and the diameter of the auxiliary shaft (1ac) is smaller than the diameter of the conductor wire.

7. The flexible ultra-thin coaxial line according to claim 1, characterized in that: The flexible surface layer (1e) is made of low-density polyethylene, and a plurality of the flexible surface layers (1e) are in the shape of strips and are arranged along the outer surface of the second insulating layer (1d).

8. The flexible ultra-thin coaxial line according to claim 1, characterized in that: The outer cover (1f) is made of PVC material, and an anti-slip protrusion is provided at the connection between the wiring harness sleeve (3) and the outer cover (1f).

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