A separable optical and electrical hybrid cable and its manufacturing method

Abstract

The present invention discloses a separable optical and electrical hybrid cable and a preparation method thereof. The optical and electrical hybrid cable includes an optical cable and an electrical cable; an aluminum layer A is fixedly connected to the inner wall of the outer sheath A, a filler is filled between the aluminum layers A, two sleeves are arranged in the filler, and optical fibers are arranged in each sleeve; the electrical cable includes an outer sheath B, an aluminum layer B, a copper core cable and a tearing rope; an aluminum layer B is fixedly connected to the inner wall of the outer sheath B, a copper core cable is arranged in the aluminum layer B, a tearing rope is arranged between the copper core cable and the aluminum layer B, and the tearing rope is arranged at one end of the aluminum layer B away from the optical cable; both ends of the optical cable are connected with the electrical cable, the electrical cable is detachably connected with the optical cable, and the electrical cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located; facilitating the separation of the optical cable and the electrical cable; after optimizing the materials of the outer sheath A and the outer sheath B, the flame retardancy of the optical and electrical hybrid cable is greatly improved, and it has low toxicity and will not cause secondary damage in case of fire.

Description

Technical Field

[0001] The present invention relates to the field of optical and electrical hybrid cables, and specifically to a separable optical and electrical hybrid cable and a preparation method thereof. Background Art

[0002] The 5G network refers to the fifth-generation mobile network communication technology, which is a technology with high speed, low cost, low power consumption, and secure and reliable transmission. Its main feature is high transmission speed, with a peak transmission of up to dozens of GB per second. With the rapid development of the mobile Internet, mobile data traffic has maintained rapid growth in recent years. Moreover, with the advent of the big data era, higher requirements are put forward for mobile data communication.

[0003] According to statistics, 60% - 70% of data transmission in the 4G network is mainly concentrated indoors, and it is expected that indoor traffic will further increase in the 5G network era. The 5G network indoor distribution coverage includes outdoor covering indoor mode, traditional DAS system, indoor optical fiber distribution system, and distributed pico base station mode. In the indoor distribution system, both the indoor optical fiber distribution system and the distributed base station mode can use optical and electrical hybrid cables; in the prior art, the optical cable and the electrical cable are coated in the outer sheath, and it is very difficult to separate them separately for use. It can only be separated after damaging the outer sheath. And the electrical cable is mostly a multi-core cable. After the outer sheath is damaged, the multi-core cable is prone to scattering, which is inconvenient for use. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a separable optical and electrical hybrid cable and a preparation method thereof, so as to at least achieve the purpose of easily separating the optical cable from the electrical cable without causing any damage to the optical cable and the electrical cable.

[0005] The purpose of the present invention is achieved by the following technical solutions: A separable optical and electrical hybrid cable includes an optical cable and an electrical cable. The optical cable includes an outer sheath A, an aluminum layer A, a filler, a sleeve, and an optical fiber; the inner wall of the outer sheath A is fixedly connected with the aluminum layer A, the filler is filled between the aluminum layers A, two sleeves are arranged in the filler, and optical fibers are arranged in the sleeves;

[0006] The electrical cable includes an outer sheath B, an aluminum layer B, a copper core cable, and a tearing rope; the inner wall of the outer sheath B is fixedly connected with the aluminum layer B, the copper core cable is arranged in the aluminum layer B, a tearing rope is arranged between the copper core cable and the aluminum layer B, and the tearing rope is arranged at one end of the aluminum layer B far from the optical cable;

[0007] Both ends of the optical cable are connected with the electrical cable, the electrical cable is detachably connected with the optical cable, and the electrical cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located.

[0008] The optoelectronic hybrid cable described in the present invention facilitates the separation of the optical cable and the electric cable. Simply hold the electric cable and the optical cable respectively and stretch them in opposite directions to achieve the separation of the optical cable and the electric cable, without causing any adverse effects on the optical cable and the electric cable. If the two need to be combined for use, directly embed the electric cable into the optical cable, and the separation length of the two can be well adjusted without causing the electric cable to become scattered. The side of the outer sheath A away from the optical fiber can also be set as an arc surface structure to embed the electric cable.

[0009] Furthermore, both ends of the optical cable are in an arc surface structure, and the diameter of the arc surface structure is equal to the diameter of the electric cable, facilitating the fixed connection between the optical cable and the electric cable, not easily coming apart, not causing scattering between the electric cable and the optical fiber, and being convenient for taking.

[0010] Furthermore, the sleeves are arranged on the same horizontal plane.

[0011] A preparation method of a separable optoelectronic hybrid cable includes the following steps:

[0012] S1. Preparation of the optical cable: Put the optical fiber into a mold and extrude the filler. After the filler is cured, demold to form a filler layer; both ends of the filler are in a circular arc shape; pour aluminum liquid on the top and bottom surfaces of the filler layer, and then attach the outer sheath A to the side of the aluminum liquid away from the optical fiber. After the aluminum liquid condenses, an aluminum layer A is formed. Fix the outer sheath A to the filler layer to obtain the optical cable.

[0013] S2. Preparation of the electric cable: Coating an aluminum layer B on the copper core cable and the tearing rope, and then coating an outer sheath B on the side of the aluminum layer away from the copper core cable to obtain the electric cable.

[0014] S3. Assembly of the optoelectronic hybrid cable: Extrude the electric cable into the arc surfaces at both ends of the optical cable respectively to form the optoelectronic hybrid cable.

[0015] Furthermore, the materials of the outer sheath A and the outer sheath B are the same; the raw materials of the outer sheath A include 16 - 19 parts by weight of polyurethane, 4 - 7 parts by weight of silicone, 0.2 - 0.4 parts by weight of ultraviolet absorber, and 0.1 - 0.3 parts by weight of quencher. Put the polyurethane and silicone into a mixer for mixing. The temperature of the mixer is 200°C. After mixing for 10 - 12 minutes, add the ultraviolet absorber and the quencher and mix for 3 - 5 minutes. At this time, the temperature of the mixer is 170°C; extrude the mixed material after mixing into a mold and cure it to form the outer sheath A; use an extruder to coat the mixed material after mixing on the outer wall surface of the aluminum layer B to form the outer sheath B.

[0016] Furthermore, the filler is polyurethane.

[0017] Further, the ultraviolet absorber is 2-hydroxy-4-n-octyloxybenzophenone.

[0018] Further, the quencher is any one of AM-101 and NBC.

[0019] The beneficial effects of the present invention are as follows: The optical and electrical hybrid cable involved in the present invention facilitates the separation of the optical cable and the electrical cable, and will not cause any adverse effects on the optical cable and the electrical cable, facilitating the regulation of the separation length of the electrical cable and the optical cable; at the same time, the structure is simple and the production cost is low; through the selection of the outer sheath material, the optical and electrical hybrid cable can be flame-retardant, and will not produce a large amount of thick smoke at high temperatures, has low toxicity, and will not cause secondary injuries in the event of a fire; under the synergistic effect of the ultraviolet absorber and the quencher, the optical and electrical hybrid cable is not easy to age and the service life is greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the optical cable;

[0022] Figure 3 is a schematic structural diagram of the electrical cable;

[0023] 101 - Outer sheath A, 102 - Aluminum layer A, 103 - Sleeve, 104 - Optical fiber, 201 - Outer sheath B, 202 - Aluminum layer B, 203 - Copper core cable, 204 - Tear cord. DETAILED DESCRIPTION OF THE INVENTION

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0025] Example 1

[0026] A separable fiber-optic and electrical hybrid cable includes an optical cable and an electrical cable. The optical cable includes an outer sheath A101, an aluminum layer A102, a filler, a sleeve 103, and an optical fiber 104. The inner wall of the outer sheath A101 is fixedly connected to the aluminum layer A102. The space between the aluminum layers A102 is filled with a filler. Two sleeves 103 are provided in the filler, and optical fibers 104 are provided in each sleeve 103. The electrical cable includes an outer sheath B201, an aluminum layer B202, a copper core cable 203, and a tearing cord 204. The inner wall of the outer sheath B201 is fixedly connected to the aluminum layer B202. A copper core cable 203 is provided in the aluminum layer B202. A tearing cord 204 is provided between the copper core cable 203 and the aluminum layer B202. The tearing cord 204 is provided at one end of the aluminum layer B202 away from the optical cable. The two ends of the optical cable are in an arc structure, and the diameter of the arc structure is equal to the diameter of the electrical cable. The electrical cable is embedded in the arc structure, and the electrical cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located. The sleeves 103 are arranged on the same horizontal plane. The preparation method of the fiber-optic and electrical hybrid cable includes the following steps:

[0027] S1. Preparation of the optical cable: Place the optical fiber 104 into a mold, and extrude polyurethane filler. After the polyurethane filler is cured, demold to form a filler layer. Both ends of the filler are in a circular arc shape. Pour aluminum liquid on the top and bottom surfaces of the filler layer, and then attach the outer sheath A101 to the side of the aluminum liquid away from the optical fiber 104. After the aluminum liquid condenses, an aluminum layer A102 is formed. Fix the outer sheath A101 and the filler layer to obtain the optical cable. The materials of the outer sheath A101 and the outer sheath B201 are the same. The raw materials of the outer sheath A101 are in parts by weight and include 16 parts of polyurethane, 4 parts of silicone, 0.2 part of 2-hydroxy-4-n-octyloxybenzophenone, and 0.1 part of AM-101;

[0028] S2. Preparation of the electrical cable: Coat the copper core cable 203 and the tearing cord with an aluminum layer B202, and then coat the side of the aluminum layer away from the copper core cable 203 with an outer sheath B201 to obtain the electrical cable;

[0029] S3. Assembly of the fiber-optic and electrical hybrid cable: Extrude the electrical cable into the arc surfaces at both ends of the optical cable at the same time to form the fiber-optic and electrical hybrid cable.

[0030] Example 2

[0031] A separable optical and electrical hybrid cable, comprising an optical cable and an electrical cable. The optical cable includes an outer sheath A101, an aluminum layer A102, a filler, a sleeve 103 and an optical fiber 104. The inner wall of the outer sheath A101 is fixedly connected to the aluminum layer A102. The space between the aluminum layers A102 is filled with a filler. There are two sleeves 103 in the filler, and optical fibers 104 are arranged in each sleeve 103. The electrical cable includes an outer sheath B201, an aluminum layer B202, a copper core cable 203 and a tearing rope 204. The inner wall of the outer sheath B201 is fixedly connected to the aluminum layer B202. A copper core cable 203 is arranged in the aluminum layer B202. A tearing rope 204 is arranged between the copper core cable 203 and the aluminum layer B202. The tearing rope 204 is arranged at one end of the aluminum layer B202 away from the optical cable. The two ends of the optical cable are in an arc structure, and the diameter of the arc structure is equal to the diameter of the electrical cable. The electrical cable is embedded in the arc structure, and the electrical cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located. The sleeves 103 are arranged on the same horizontal plane. The preparation method of the optical and electrical hybrid cable includes the following steps:

[0032] S1. Preparation of the optical cable: Put the optical fiber 104 into a mold, extrude polyurethane filler, and after the polyurethane filler is cured, demold to form a filler layer. Both ends of the filler are in an arc shape. Pour aluminum liquid on the top and bottom surfaces of the filler layer, and then attach the outer sheath A101 to the side of the aluminum liquid away from the optical fiber 104. After the aluminum liquid condenses, an aluminum layer A102 is formed. Fix the outer sheath A101 and the filler layer to obtain the optical cable. The materials of the outer sheath A101 and the outer sheath B201 are the same. The raw materials of the outer sheath A101, by weight, include 17 parts of polyurethane, 6 parts of silicone, 0.3 part of 2-hydroxy-4-n-octyloxybenzophenone, and 0.1 part of AM-101;

[0033] S2. Preparation of the electrical cable: Coat the copper core cable 203 and the tearing rope with an aluminum layer B202, and then coat the outer sheath B201 on the side of the aluminum layer away from the copper core cable 203 to obtain the electrical cable;

[0034] S3. Assembly of the optical and electrical hybrid cable: Extrude the electrical cable into the arc surfaces at both ends of the optical cable respectively to form the optical and electrical hybrid cable.

[0035] Example 3

[0036] A separable optical and electrical hybrid cable, comprising an optical cable and an electrical cable. The optical cable includes an outer sheath A101, an aluminum layer A102, a filler, a sleeve 103 and an optical fiber 104; the inner wall of the outer sheath A101 is fixedly connected with the aluminum layer A102, the filler is filled between the aluminum layers A102, two sleeves 103 are arranged in the filler, and optical fibers 104 are arranged in each sleeve 103; the electrical cable includes an outer sheath B201, an aluminum layer B202, a copper core cable 203 and a tearing rope 204; the inner wall of the outer sheath B201 is fixedly connected with the aluminum layer B202, a copper core cable 203 is arranged in the aluminum layer B202, a tearing rope 204 is arranged between the copper core cable 203 and the aluminum layer B202, and the tearing rope 204 is arranged at one end of the aluminum layer B202 away from the optical cable; both ends of the optical cable are in an arc structure, the diameter of the arc structure is equal to the diameter of the electrical cable, the electrical cable is embedded in the arc structure, and the electrical cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located; the sleeves 103 are arranged on the same horizontal plane. The preparation method of the optical and electrical hybrid cable includes the following steps:

[0037] S1. Preparation of the optical cable: Put the optical fiber 104 into a mold, extrude polyurethane filler, and after the polyurethane filler is cured, demold to form a filler layer; both ends of the filler are in an arc shape; Pour aluminum liquid on the top and bottom surfaces of the filler layer, and then attach the outer sheath A101 to the side of the aluminum liquid away from the optical fiber 104. After the aluminum liquid condenses, an aluminum layer A102 is formed. Fix the outer sheath A101 and the filler layer to obtain the optical cable; the materials of the outer sheath A101 and the outer sheath B201 are the same; the raw materials of the outer sheath A101 are in parts by weight and include 18 parts of polyurethane, 5 parts of silicone, 0.3 part of 2-hydroxy-4-n-octyloxybenzophenone, and 0.2 part of NBC;

[0038] S2. Preparation of the electrical cable: Coat the copper core cable 203 and the tearing rope with an aluminum layer B202, and then coat the outer sheath B201 on the side of the aluminum layer away from the copper core cable 203 to obtain the electrical cable;

[0039] S3. Assembly of the optical and electrical hybrid cable: Extrude the electrical cable into the arc surfaces at both ends of the optical cable at the same time to form the optical and electrical hybrid cable.

[0040] Example 4

[0041] A separable fiber-optic and electrical hybrid cable, comprising an optical cable and an electrical cable. The optical cable includes an outer sheath A101, an aluminum layer A102, a filler, a sleeve 103, and an optical fiber 104. The inner wall of the outer sheath A101 is fixedly connected to the aluminum layer A102. Fillers are filled between the aluminum layers A102. Two sleeves 103 are provided in the fillers, and optical fibers 104 are provided in each of the sleeves 103. The electrical cable includes an outer sheath B201, an aluminum layer B202, a copper core cable 203, and a tearing rope 204. The inner wall of the outer sheath B201 is fixedly connected to the aluminum layer B202. A copper core cable 203 is provided in the aluminum layer B202. A tearing rope 204 is provided between the copper core cable 203 and the aluminum layer B202. The tearing rope 204 is provided at one end of the aluminum layer B202 away from the optical cable. Both ends of the optical cable are in an arc structure, and the diameter of the arc structure is equal to the diameter of the electrical cable. The electrical cable is embedded in the arc structure, and the electrical cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located. The sleeves 103 are arranged on the same horizontal plane. The preparation method of the fiber-optic and electrical hybrid cable includes the following steps:

[0042] S1. Preparation of the optical cable: Put the optical fiber 104 into a mold, extrude polyurethane filler. After the polyurethane filler is cured, demold to form a filler layer. Both ends of the filler are in an arc shape. Pour aluminum liquid on the top and bottom surfaces of the filler layer, and then attach the outer sheath A101 to the side of the aluminum liquid away from the optical fiber 104. After the aluminum liquid condenses, an aluminum layer A102 is formed. Fix the outer sheath A101 and the filler layer to obtain the optical cable. The materials of the outer sheath A101 and the outer sheath B201 are the same. The raw materials of the outer sheath A101, by weight, include 19 parts of polyurethane, 7 parts of silicone, 0.4 part of 2-hydroxy-4-n-octyloxybenzophenone, and 0.3 part of NBC;

[0043] S2. Preparation of the electrical cable: Coating the copper core cable 203 and the tearing rope with an aluminum layer B202, and then coating the outer sheath B201 on the side of the aluminum layer away from the copper core cable 203 to obtain the electrical cable;

[0044] S3. Assembly of the fiber-optic and electrical hybrid cable: Extrude the electrical cable into the arc surfaces at both ends of the optical cable respectively to form the fiber-optic and electrical hybrid cable.

[0045] Perform performance tests on the fiber-optic and electrical hybrid cable prepared in Example 2, and the test results are shown in Table 1.

[0046]

[0047]

[0048] The optoelectronic hybrid cable prepared by the present invention has excellent flame retardancy, very little smoke generation during combustion, and basically does not produce toxic gases. It can be applied under harsh conditions and at the same time has strong ultraviolet resistance.

[0049] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in the relevant field. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. A separable optical and electrical hybrid cable, comprising an optical cable and an electrical cable, characterized in that: The optical cable includes an outer sheath A (101), an aluminum layer A (102), a filler, a sleeve (103), and an optical fiber (104); the inner wall of the outer sheath A (101) is fixedly connected to the aluminum layer A (102), the filler is filled between the aluminum layers A (102), two sleeves (103) are provided in the filler, and optical fibers (104) are provided in each of the sleeves (103); The cable includes an outer sheath B (201), an aluminum layer B (202), a copper core cable (203), and a tearing rope (204); the inner wall of the outer sheath B (201) is fixedly connected to the aluminum layer B (202), a copper core cable (203) is provided in the aluminum layer B (202), a tearing rope (204) is provided between the copper core cable (203) and the aluminum layer B (202), and the tearing rope (204) is provided at one end of the aluminum layer B (202) away from the optical cable; Both ends of the optical cable are connected to the cable, the cable is detachably connected to the optical cable, and the cable is symmetrically arranged with respect to the vertical plane where the symmetry line of the optical cable is located; Both ends of the optical cable are in an arc structure, and the diameter of the arc structure is equal to the diameter of the cable.

2. The separable optical and electrical hybrid cable according to claim 1, characterized in that: The sleeves (103) are arranged on the same horizontal plane.

3. The preparation method of a separable optical and electrical hybrid cable according to claim 1, characterized in that, It includes the following steps: S1. Preparation of the optical cable: Place the optical fiber (104) into a mold, extrude the filler, and after the filler is cured, demold to form a filler layer; both ends of the filler are in an arc shape; pour aluminum liquid on the top and bottom surfaces of the filler layer, and then attach the outer sheath A (101) to the side of the aluminum liquid away from the optical fiber (104). After the aluminum liquid condenses, it forms the aluminum layer A (102), and fixedly connect the outer sheath A (101) to the filler layer to obtain the optical cable; S2. Preparation of the cable: Coat the copper core cable (203) and the tearing rope with the aluminum layer B (202), and then coat the outer sheath B (201) on the side of the aluminum layer away from the copper core cable (203) to obtain the cable; S3. Assembly of the optical and electrical hybrid cable: Simultaneously extrude the cables into the arc surfaces at both ends of the optical cable to form the optical and electrical hybrid cable.

4. The manufacturing method of a separable optical and electrical hybrid cable according to claim 3, characterized in that: The materials of the outer sheath A (101) and the outer sheath B (201) are the same; the raw materials of the outer sheath A (101) include 16-19 parts of polyurethane, 4-7 parts of silicone, 0.2-0.4 parts of ultraviolet absorber, and 0.1-0.3 parts of quencher by weight.

5. The manufacturing method of a separable optical and electrical hybrid cable according to claim 3, characterized in that: The filler is polyurethane.

6. The manufacturing method of a separable optical and electrical hybrid cable according to claim 4, characterized in that: The ultraviolet absorber is 2-hydroxy-4-n-octyloxybenzophenone.

7. The manufacturing method of a separable optical and electrical hybrid cable according to claim 4, characterized in that: The quencher is any one of AM-101 and NBC.

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