Waterproof composite cable

Abstract

The utility model discloses a waterproof composite cable. The waterproof composite cable comprises an outer sleeve, a central reinforcing member, a plurality of optical transmission units and a plurality of conductors. The outer sleeve is provided with an accommodating cavity and is made of a flexible rubber material; the plurality of optical transmission units are arranged in the accommodating cavity and are distributed on the periphery of the central reinforcing piece; the plurality of conductors are arranged in the accommodating cavity. The surface of the outer sleeve is coated with the first waterproof layer, the surface of the first waterproof layer is coated with the first metal braid layer, the first metal braid layer is coated with the second waterproof layer, and the second metal braid layer is coated with the second metal braid layer, so that when a mouse bites the outer sleeve to the second metal braid layer, the mouse is difficult to bite the second metal braid layer; the internal structure of the composite cable is effectively protected from being damaged, underground water easily permeates into gaps of the metal braided layers, the internal first waterproof layer and the internal second waterproof layer can effectively prevent underground water from permeating into the accommodating cavity, and the two metal braided layers can bring dual protection to the composite cable.

Description

Technical Field

[0001] The utility model relates to the technology of cable field, in particular to a waterproof composite cable. Background Art

[0002] Optical fiber cables are manufactured to meet optical, mechanical, or environmental performance specifications. They utilize one or more optical fibers enclosed in a sheath as the transmission medium and can be used individually or in groups. Optical fiber cables primarily consist of optical fibers (hair-thin glass filaments) protected by a plastic sheath and outer sheath. They contain no metals such as gold, silver, copper, or aluminum and are generally not worth recycling. Optical fiber cables are communications lines that utilize a specific number of optical fibers arranged into a core, encased in a sheath, and sometimes even covered with an outer protective layer, to transmit optical signals. With the advent of the information age, the amount of information transmitted has exploded. As an effective means of high-capacity, long-distance transmission, optical fiber cables have gained widespread and extensive application, with their application gradually expanding from long-distance trunk lines to metropolitan area networks and access networks.

[0003] To facilitate widespread application, existing optical cables are often combined with electrical cables to form composite cables that transmit both electrical and optical signals. Whether optical, electrical, or composite cables, they generally need to be buried underground. To facilitate wiring, they often use flexible cable sheaths. However, these materials lack rigidity and are susceptible to burrowing rats, which can chew through the sheaths and ultimately damage the internal structure of the composite cable. Furthermore, groundwater can seep into the composite cable, further damaging it. Therefore, improvements to existing composite cables are necessary. Utility Model Content

[0004] In view of this, the present invention aims to address the shortcomings of the existing technology and its main purpose is to provide a waterproof composite cable, which can solve the problems that the existing composite cable is easily bitten by mice after being buried under the surface, damaging the internal structure of the composite cable, and groundwater will penetrate into the composite cable, further damaging the composite cable.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A waterproof composite cable comprises an outer sleeve, a central reinforcement, a plurality of optical transmission units and a plurality of conductors; the outer sleeve has a receiving cavity, the outer sleeve is made of a flexible rubber material, the surface of the outer sleeve is covered with a first waterproof layer, the surface of the first waterproof layer is covered with a first metal braided layer, the first metal braided layer is covered with a second waterproof layer, the second waterproof layer is covered with a second metal braided layer, the surface of the second metal braided layer is covered with a flexible layer, the flexible layer is also made of a flexible rubber material, and the surface of the flexible layer is covered with a weather-resistant layer; the central reinforcement is arranged in the receiving cavity; the plurality of optical transmission units are arranged in the receiving cavity and distributed around the periphery of the central reinforcement, each optical transmission unit comprises an inner sleeve, an optical fiber and a fiber paste, the inner sleeve is arranged in the receiving cavity, the optical fiber is arranged in the inner sleeve, the fiber paste is filled in the inner sleeve and wraps the optical fiber; the plurality of conductors are arranged in the receiving cavity and distributed around the central reinforcement and the optical transmission unit.

[0007] As a preferred solution, the central reinforcement is made of TPU material.

[0008] As a preferred solution, the first waterproof layer and the second waterproof layer are both water-blocking yarns, which absorb water and swell, and have excellent waterproof effects.

[0009] As a preferred solution, the first metal braided layer and the second metal braided layer are both stainless steel braided layers. The stainless steel braided layer has a certain strength and a certain deformation ability, and will not affect the wiring of the composite cable.

[0010] As a preferred solution, the weather-resistant layer is made of F46 resin. F46 resin is a copolymer of tetrafluoroethylene and hexafluoropropylene, with the content of hexafluoropropylene accounting for about 15%. It is a modified material of polytetrafluoroethylene and has excellent processing performance and weather resistance.

[0011] As a preferred solution, the multiple light transmission units are evenly distributed at circumferential intervals around the periphery of the central reinforcement.

[0012] As a preferred solution, the plurality of conductors are evenly distributed at circumferential intervals around the central reinforcement and the periphery of the optical transmission unit.

[0013] As a preferred solution, the device further includes a cable paste, which fills the accommodating cavity and wraps the central reinforcement member, the multiple optical transmission units and the multiple conductors.

[0014] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0015] By coating the surface of the outer sleeve with a first waterproof layer, the surface of the first waterproof layer is coated with a first metal braided layer, the first metal braided layer is coated with a second waterproof layer, and the second waterproof layer is coated with a second metal braided layer, when mice gnaw the outer sleeve to the second metal braided layer, it is difficult for the mice to bite the second metal braided layer, effectively protecting the internal structure of the composite cable from damage. The gaps in the metal braided layer are easily penetrated by groundwater, while the first waterproof layer and the second waterproof layer inside can effectively prevent groundwater from penetrating into the accommodating cavity, and the two metal braided layers can provide double protection for the composite cable.

[0016] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of a preferred embodiment of the present utility model.

[0018] Description of the accompanying drawings:

[0019] 10. Outer sleeve 101, accommodating cavity

[0020] 11. First waterproof layer 12. First metal braided layer

[0021] 13. Second waterproof layer 14. Second metal braided layer

[0022] 15. Flexible layer 16. Weather-resistant layer

[0023] 20. Central reinforcement 30. Optical transmission unit

[0024] 31. Inner tube 32. Optical fiber

[0025] 33. Fiber paste 40. Conductor

[0026] 50. Cable grease. DETAILED DESCRIPTION

[0027] Please refer to Figure 1 As shown, it shows the specific structure of a preferred embodiment of the present invention, including an outer sleeve 10, a central reinforcement 20, a plurality of optical transmission units 30 and a plurality of conductors 40.

[0028] The outer sleeve 10 has a receiving cavity 101. The outer sleeve 10 is made of flexible rubber. The surface of the outer sleeve 10 is covered with a first waterproof layer 11. The surface of the first waterproof layer 11 is covered with a first metal braided layer 12. The first metal braided layer 12 is covered with a second waterproof layer 13. The second waterproof layer 13 is covered with a second metal braided layer 14. The surface of the second metal braided layer 14 is covered with a flexible layer 15. The flexible layer 15 is also made of flexible rubber. The surface of the flexible layer 15 is covered with a weather-resistant layer 16. In this embodiment, the first waterproof layer 11 is covered with a first metal braided layer 12. The first metal braided layer 12 is covered with a second waterproof layer 13. The second waterproof layer 13 is covered with a second metal braided layer 14. The surface of the second metal braided layer 14 is covered with a flexible layer 15. The flexible layer 15 is also made of flexible rubber. The surface of the flexible layer 15 is covered with a weather-resistant layer 16. Layer 11 and the second waterproof layer 13 are both water-blocking yarns, which can absorb water and swell, and have excellent waterproof effects; and the first metal braided layer 12 and the second metal braided layer 14 are both stainless steel braided layers, which have a certain strength and a certain deformation ability, and will not affect the composite cable arrangement; in addition, the weather-resistant layer 16 is made of F46 resin, which is a copolymer of tetrafluoroethylene and hexafluoropropylene, with a hexafluoropropylene content of about 15%. It is a modified material of polytetrafluoroethylene and has excellent processing performance and weather resistance.

[0029] The central reinforcement member 20 is disposed in the accommodating cavity 101 . In this embodiment, the central reinforcement member 20 is made of TPU material.

[0030] The multiple optical transmission units 30 are arranged in the accommodating cavity 101 and distributed around the periphery of the central reinforcement 20. Each optical transmission unit 30 includes an inner sleeve 31, an optical fiber 32 and a fiber paste 33. The inner sleeve 31 is arranged in the accommodating cavity 101, the optical fiber 32 is arranged in the inner sleeve 31, and the fiber paste 33 is filled in the inner sleeve 31 and wraps the optical fiber 32. In this embodiment, the multiple optical transmission units 30 are evenly distributed around the periphery of the central reinforcement 20 at circumferential intervals.

[0031] The plurality of conductors 40 are disposed in the accommodating cavity 101 and distributed around the central reinforcement 20 and the optical transmission unit 30 . In this embodiment, the plurality of conductors 40 are evenly distributed around the central reinforcement 20 and the optical transmission unit 30 at circumferential intervals.

[0032] Furthermore, the cable jelly 50 is included. The cable jelly 50 is filled in the accommodating cavity 101 and wraps the central reinforcement member 20 , the plurality of optical transmission units 30 and the plurality of conductors 40 .

[0033] The design focus of the utility model is that: by coating the surface of the outer sleeve with a first waterproof layer, the surface of the first waterproof layer is coated with a first metal braided layer, the first metal braided layer is coated with a second waterproof layer, and the second waterproof layer is coated with a second metal braided layer, when a mouse gnaws the outer sleeve to the second metal braided layer, it is difficult for the mouse to bite the second metal braided layer, thereby effectively protecting the internal structure of the composite cable from damage. The gaps in the metal braided layers are easily penetrated by groundwater, while the first waterproof layer and the second waterproof layer inside can effectively prevent groundwater from penetrating into the accommodating cavity, and the two metal braided layers can provide double protection for the composite cable.

[0034] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A waterproof composite cable, characterized by: It includes an outer sleeve, a central reinforcement, multiple optical transmission units and multiple conductors; the outer sleeve has a accommodating cavity, the outer sleeve is made of flexible rubber material, the surface of the outer sleeve is covered with a first waterproof layer, the surface of the first waterproof layer is covered with a first metal braided layer, the first metal braided layer is covered with a second waterproof layer, the second waterproof layer is covered with a second metal braided layer, the surface of the second metal braided layer is covered with a flexible layer, the flexible layer is also made of flexible rubber material, and the surface of the flexible layer is covered with a weather-resistant layer; the central reinforcement is arranged in the accommodating cavity; the multiple optical transmission units are arranged in the accommodating cavity and distributed around the periphery of the central reinforcement, each optical transmission unit includes an inner sleeve, an optical fiber and a fiber paste, the inner sleeve is arranged in the accommodating cavity, the optical fiber is arranged in the inner sleeve, the fiber paste is filled in the inner sleeve and wraps the optical fiber; the multiple conductors are arranged in the accommodating cavity and distributed around the central reinforcement and the optical transmission unit.

2. The waterproof composite cable according to claim 1, characterized in that: The central reinforcement is made of TPU material.

3. The waterproof composite cable according to claim 1, characterized in that: The first waterproof layer and the second waterproof layer are both water-blocking yarns.

4. The waterproof composite cable according to claim 1, characterized in that: The first metal braided layer and the second metal braided layer are both stainless steel braided layers.

5. The waterproof composite cable according to claim 1, characterized in that: The weather-resistant layer is made of F46 resin.

6. The waterproof composite cable according to claim 1, characterized in that: The plurality of light transmission units are evenly distributed around the periphery of the central reinforcement member in a circumferential direction.

7. The waterproof composite cable according to claim 1, characterized in that: The plurality of conductors are circumferentially spaced and uniformly distributed around the central reinforcement and the periphery of the optical transmission unit.

8. The waterproof composite cable according to claim 1, characterized in that: The invention further comprises a cable jelly which is filled in the accommodating cavity and wraps the central reinforcement member, the plurality of optical transmission units and the plurality of conductors.

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