Coaxial cable with long service life

Abstract

The utility model is applicable to the technical field of cables, and provides a coaxial cable with long service life, which comprises a cable core, an insulating medium layer, a shielding layer and an outer sleeve layer, and the insulating medium layer comprises an insulating layer and a buffer anti-bending layer, the buffer anti-bending layer comprises a wavy buffer rubber layer, interlayers wrapping the inner and outer side surfaces of the buffer rubber layer, and a plurality of elastic wire cores inserted in the buffer rubber layer, and through the arrangement of the buffer anti-bending layer, when the cable is impacted from the outside, the wavy buffer rubber layer in the buffer anti-bending layer deforms to a certain extent, and meanwhile, the elastic wire cores are prevented from being damaged. According to the utility model, the buffer bending-resistant layer is arranged to play a role in compression resistance and buffering, the arrangement of the plurality of elastic cable cores also correspondingly improves the compression resistance and buffering effect of the buffer bending-resistant layer, in addition, when the cable is repeatedly bent, the plurality of elastic cable cores help the cable to rapidly and elastically recover to the original state, and the phenomena of cable core deformation and core breakage caused by repeated bending of the cable are reduced; and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a coaxial cable with a long service life. Background Art

[0002] The name of coaxial cable is related to its structure. Coaxial cable is also one of the most common transmission media in local area networks. The pair of conductors used to transmit information is made according to the structure that a cylindrical outer conductor is sheathed outside the inner conductor (a thin core), and the two conductors are isolated from each other by insulating materials. The center of the outer conductor and the center axis core wire are on the same axis, so it is called coaxial cable.

[0003] During the continuous operation of the automatic device, the existing coaxial cable is prone to deformation of the entire cable or the core structure after being subjected to repeated extrusion and bending. In addition, since elastic recovery cannot be achieved, the core is also prone to core breakage, resulting in a short service life. Therefore, it is necessary to design corresponding technical solutions to solve the existing technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a coaxial cable with a long service life, so as to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A coaxial cable with a long service life comprises a copper wire core, an insulating medium layer, a shielding layer and a jacket layer, wherein the insulating medium layer comprises an insulating layer and a buffer anti-bending layer, wherein the buffer anti-bending layer comprises a wavy buffer rubber layer, a partition layer wrapped around the inner and outer sides of the buffer rubber layer, and a plurality of elastic wire cores inserted in the buffer rubber layer.

[0007] As a further solution of the utility model: the insulating layer includes a polyethylene inner insulating layer and an ETFE outer insulating layer, the inner surface of the polyethylene inner insulating layer is coated on the surface of the copper wire core, and the inner surface of the ETFE outer insulating layer is coated on the outer surface of the polyethylene inner insulating layer.

[0008] As a further solution of the utility model: the insulation layer includes an aluminum ceramic fiber insulation layer and a fluororubber wrapped moisture-proof layer.

[0009] As a further solution of the utility model: the aluminum ceramic fiber insulation layer and the fluororubber wrapped moisture-proof layer have the same thickness.

[0010] As a further solution of the utility model: a buffer anti-bending layer is further arranged between the shielding layer and the outer jacket layer, and the two buffer anti-bending layers are arranged concentrically.

[0011] As a further solution of the utility model: the elastic wire core includes a thick wire core and a thin wire core, and a plurality of the thick wire cores and the thin wire cores are arranged at intervals.

[0012] As a further solution of the utility model: the outer jacket layer includes a polyurethane coating and a polytetrafluoroethylene layer.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a buffer anti-bending layer. When the cable receives an impact from the outside, the wavy buffer rubber layer in the buffer anti-bending layer undergoes a certain deformation and can play a compressive buffering role. The provision of multiple elastic cores also correspondingly improves the compressive buffering effect of the buffer anti-bending layer. In addition, when the cable is repeatedly bent, the multiple elastic cables help the cable to quickly elastically recover to its original state, reducing the phenomenon of core deformation and even core breakage caused by repeated bending of the cable, thereby improving the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a coaxial cable with a long service life;

[0016] Figure 2 for Figure 1 sectional view of

[0017] Figure 3 for Figure 2 A magnified view of the middle buffer bending layer;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the middle insulation layer;

[0019] Figure 5 for Figure 3 Schematic diagram of the structure of the middle partition;

[0020] In the figure: 1. Copper wire core; 2. Insulating medium layer; 3. Shielding layer; 4. Jacket layer; 5. Insulating layer; 6. Buffer anti-bending layer; 7. Buffer rubber layer; 8. Interlayer; 9. Elastic wire core; 10. Polyethylene inner insulation layer; 11. ETFE outer insulation layer; 12. Aluminum ceramic fiber insulation layer; 13. Fluororubber wrapped moisture-proof layer; 14. Thick wire core; 15. Thin wire core; 16. Polytetrafluoroethylene layer; 17. Polyurethane coating. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] Example 1

[0023] See also Figure 1-5A coaxial cable with a long service life, comprising a copper core 1, an insulating dielectric layer 2, a shielding layer 3 and a jacket layer 4, wherein the insulating dielectric layer 2 comprises an insulating layer 5 and a buffer anti-bending layer 6, wherein the buffer anti-bending layer 6 comprises a wavy buffer rubber layer 7, an interlayer 8 wrapped on the inner and outer sides of the buffer rubber layer 7, and a plurality of elastic cores 9 inserted in the buffer rubber layer 7, wherein the insulating layer 5 comprises a polyethylene inner insulating layer 10 and an ETFE outer insulating layer 11, wherein the inner surface of the polyethylene inner insulating layer 10 is coated on the surface of the copper core 1, and the inner surface of the ETFE outer insulating layer 11 is coated on the outer surface of the polyethylene inner insulating layer 10, and the interlayer 8 comprises an aluminum ceramic fiber thermal insulation layer 12 and a fluororubber wrapped moisture-proof layer 13, the aluminum ceramic fiber insulation layer 12 and the fluororubber wrapped moisture-proof layer 13 are of equal thickness, the outer jacket layer 4 includes a polyurethane coating 17 and a polytetrafluoroethylene layer 16, and by arranging a buffer anti-bending layer 6, when the cable receives an impact from the outside, the wavy buffer rubber layer 7 in the buffer anti-bending layer 6 undergoes a certain deformation and can play a compressive buffering role, and the arrangement of multiple elastic cores 9 also correspondingly improves the compressive buffering effect of the buffer anti-bending layer 6. In addition, when the cable is repeatedly bent, the multiple elastic cables help the cable to quickly elastically recover to its original state, reduce the deformation of the core caused by repeated bending of the cable, and even the phenomenon of core breaking, thereby improving the service life of the cable.

[0024] Example 2

[0025] This embodiment is improved on the basis of embodiment 1, specifically:

[0026] See also Figure 2 and Figure 3 The elastic core 9 includes a thick core 14 and a thin core 15, and a plurality of thick cores 14 and thin cores 15 are arranged at intervals. Under a lighter load, the buffer rubber layer 7 and the thick core 14 are used for pressure buffering. Under a heavier load, the buffer rubber layer 7, the thick core 14 and the thin core 15 are used for joint pressure bearing, which can meet the graded compressive buffering under different conditions and further improve the compressive buffering effect of the buffer anti-bending layer 6.

[0027] Furthermore, a buffering and anti-bending layer 6 is arranged between the shielding layer 3 and the outer jacket layer 4. The two buffering and anti-bending layers 6 are arranged concentrically. Through such an arrangement, the buffering effect and anti-bending effect of the entire cable are further improved, and correspondingly, the service life of the cable is also improved.

[0028] 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 basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, 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 are included in the present invention.

[0029] 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 coaxial cable with a long service life, comprising a copper wire core (1), an insulating medium layer (2), a shielding layer (3) and a jacket layer (4), characterized in that: The insulating medium layer (2) comprises an insulating layer (5) and a buffer anti-bending layer (6), wherein the buffer anti-bending layer (6) comprises a wavy buffer rubber layer (7), an interlayer (8) wrapped around the inner and outer sides of the buffer rubber layer (7), and a plurality of elastic wire cores (9) inserted into the buffer rubber layer (7).

2. The coaxial cable with a long service life according to claim 1, characterized in that: The insulating layer (5) comprises a polyethylene inner insulating layer (10) and an ETFE outer insulating layer (11); the inner surface of the polyethylene inner insulating layer (10) is coated on the surface of the copper wire core (1), and the inner surface of the ETFE outer insulating layer (11) is coated on the outer surface of the polyethylene inner insulating layer (10).

3. The coaxial cable with a long service life according to claim 1, characterized in that: The insulation layer (8) comprises an aluminum ceramic fiber heat insulation layer (12) and a fluororubber wrapped moisture-proof layer (13).

4. The coaxial cable with a long service life according to claim 3, characterized in that: The aluminum ceramic fiber heat insulation layer (12) and the fluororubber wrapped moisture-proof layer (13) have the same thickness.

5. The coaxial cable with a long service life according to claim 1, characterized in that: A buffer anti-bending layer (6) is also provided between the shielding layer (3) and the outer jacket layer (4), and the two layers of the buffer anti-bending layers (6) are concentrically arranged.

6. The coaxial cable with a long service life according to claim 1, characterized in that: The elastic wire core (9) comprises a thick wire core (14) and a thin wire core (15), and a plurality of thick wire cores (14) and thin wire cores (15) are arranged at intervals.

7. The coaxial cable with a long service life according to claim 1, characterized in that: The outer shell layer (4) comprises a polyurethane coating (17) and a polytetrafluoroethylene layer (16).

Images