Composite optical fiber cable

Abstract

The utility model discloses a composite optical fiber cable which comprises a cable core, the outer surface of the cable core is fixedly connected with a separation layer, the outer surface of the cable core is provided with a first wire slot, the inner surface of the separation layer is provided with a second wire slot, and an optical fiber is fixedly connected between the first wire slot and the second wire slot. A spiral wire groove is formed in the outer surface of the separation layer, a wire is fixedly connected to the inner surface of the spiral wire groove, through the arrangement of the separation layer and the cable core, internal optical fibers and the wire can be separated and fixed conveniently, the stability of the cable and the wire and the uniformity of the distance can be improved, and mutual interference between lines is reduced; the optical fiber cable has the advantages that the transmission effect is improved, the minimum bending angle of the cable is increased, the optical fiber is protected, and through the arrangement of the tensile layer and the internal tensile rope, the tensile performance of the cable can be improved, the interior can be protected, the cable assembly is prevented from being damaged by external force, and the service life of the cable is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a composite optical fiber cable. Background Technology

[0002] Composite fiber optic cable, also known as optoelectronic composite cable, is a new type of cable that integrates optical fiber and copper power transmission wire. It can simultaneously solve problems such as broadband access, equipment power supply, and signal transmission, and is widely used in the fields of communication, security monitoring, intelligent transportation, industrial manufacturing, and power systems.

[0003] Composite optical fiber cables are laid in a variety of environments. During the laying process, the cables are prone to bending, which can easily damage the optical fibers due to their fragility, increasing the cost of cable laying. At the same time, the cables are prone to breakage and fracture under external forces, which can easily lead to short circuits and affect the use of the cables. After searching, it was found that the technical solution provided by the utility model application with application number CN202120502604.1 also has the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a composite optical fiber cable that facilitates the separation and fixation of internal optical fibers and conductors, improves the stability and spacing uniformity of the cable and conductors, reduces mutual interference between lines, and improves transmission performance. At the same time, the internal cable core increases the minimum bending angle of the cable and protects the optical fibers.

[0005] To achieve the above objectives, a composite optical fiber cable is provided, comprising: a cable core, a separator layer fixedly connected to the outer surface of the cable core, a first groove provided on the outer surface of the cable core, a second groove provided on the inner surface of the separator layer, an optical fiber fixedly connected between the first groove and the second groove, a spiral groove provided on the outer surface of the separator layer, a conductor fixedly connected to the inner surface of the spiral groove, a filler strip provided between the conductors, and a first protective layer fixedly connected to the outer surface of the filler strip;

[0006] The outer surface of the first protective layer is provided with a metal braided layer, the outer surface of the metal braided layer is provided with a second protective layer, the outer surface of the second protective layer is fixedly connected with an inner protective layer, the outer surface of the inner protective layer is fixedly connected with a tensile layer, the inner surface of the tensile layer is provided with tensile ropes, and the outer surface of the tensile layer is fixedly connected with an outer protective layer.

[0007] According to the composite optical fiber cable, the first groove and the second groove are positioned correspondingly, and the cable core is made of rubber, which facilitates the fixing and protection of the optical fiber, increases the minimum bending angle of the cable, and thus avoids the optical fiber from breaking.

[0008] According to the composite optical fiber cable, the separator layer is made of cross-linked polyethylene, which facilitates improved heat dissipation efficiency of the conductor.

[0009] According to the composite optical fiber cable, the outer surface of the separator layer is fixedly connected to the filler strip, which is made of ceramicized silicone rubber, which facilitates further fixing of the conductor and prevents further heat transfer, thus playing a dual role of heat insulation and heat dissipation.

[0010] According to the aforementioned composite optical fiber cable, the metal braided layer is made of copper wire, which effectively shields the interference of external electromagnetic fields on the internal conductors of the cable, and also prevents the internal signals of the cable from leaking outward, thus ensuring the stability of signal transmission.

[0011] According to the composite optical fiber cable, the number of tensile ropes is multiple and arranged in a ring array. The tensile ropes are made of aramid fiber, which has high tensile strength and can provide reliable tensile support for the cable. At the same time, it also has a high elastic modulus and small deformation under stress, which helps to maintain the shape and performance of the cable.

[0012] According to the composite optical fiber cable, both the inner and outer protective layers are made of flame-retardant polyvinyl chloride.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] 1. The separation layer and cable core facilitate the separation and fixation of internal optical fibers and conductors, which can improve the stability and spacing uniformity of cables and conductors, reduce mutual interference between lines, improve transmission effect, and at the same time increase the minimum bending angle of the cable to protect the optical fiber.

[0015] 2. By setting up tensile layers and internal tensile ropes, not only can the tensile strength of the cable be improved, but the internal structure can also be protected to prevent external forces from damaging the cable assembly and extend the service life of the cable.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is an overall structural diagram of a composite optical fiber cable according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a composite optical fiber cable according to the present invention.

[0020] Figure 3This is a partial exploded view of the structure of a composite optical fiber cable according to this utility model;

[0021] Figure 4 This is an exploded view of the internal structure of a composite optical fiber cable according to this utility model.

[0022] Legend:

[0023] 1. Cable core; 2. Separator layer; 3. First cable groove; 4. Second cable groove; 5. Optical fiber; 6. Spiral cable groove; 7. Conductor; 8. Filler strip; 9. First protective layer; 10. Metal braided layer; 11. Second protective layer; 12. Inner protective layer; 13. Tensile layer; 14. Tensile rope; 15. Outer protective layer. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model discloses a composite optical fiber cable, comprising: a cable core 1 made of rubber; a separator layer 2 fixedly connected to the outer surface of the cable core 1 to facilitate the separation of optical fibers 5 and conductors 7, and to facilitate the fixation of optical fibers 5 and conductors 7; the separator layer 2 made of cross-linked polyethylene; a first groove 3 provided on the outer surface of the cable core 1; a second groove 4 provided on the inner surface of the separator layer 2; the positions of the first groove 3 and the second groove 4 corresponding; an optical fiber 5 fixedly connected between the first groove 3 and the second groove 4; a spiral groove 6 provided on the outer surface of the separator layer 2; a conductor 7 fixedly connected to the inner surface of the spiral groove 6; a filler strip 8 provided between the conductors 7; the outer surface of the separator layer 2 fixedly connected to the filler strip 8; the filler strip 8 made of ceramicized silicone rubber to further fix the conductors 7 while improving the efficiency of heat dissipation for the conductors 7; and a first protective layer 9 fixedly connected to the outer surface of the filler strip 8 to facilitate the barrier against metal braided layer 10 together with the second protective layer 11, preventing the metal braided layer 10 from damaging other parts.

[0026] The outer surface of the first protective layer 9 is provided with a metal braided layer 10, which is made of copper wire. This helps to block external electromagnetic fields from interfering with the internal signal transmission of the cable and prevents the signals transmitted inside the cable from radiating outward, thus avoiding electromagnetic interference to surrounding electronic equipment. The outer surface of the metal braided layer 10 is provided with a second protective layer 11, and an inner protective layer 12 is fixedly connected to the outer surface of the second protective layer 11. This helps to protect the inside of the cable after the outer protective layer 15 is damaged. A tensile layer 13 is fixedly connected to the outside of the inner protective layer 12, and tensile ropes 14 are provided inside the tensile layer 13. The tensile layer 13 and tensile ropes 14 not only improve the tensile strength of the cable but also protect the inner protective layer 12 from external damage. There are multiple tensile ropes 14 arranged in a ring array, and the tensile ropes 14 are made of aramid fiber. An outer protective layer 15 is fixedly connected to the outer surface of the tensile layer 13. Both the inner protective layer 12 and the outer protective layer 15 are made of flame-retardant polyvinyl chloride.

[0027] Working Principle: During operation, the position of the optical fiber 5 is fixed by the first groove 3 and the second groove 4 set on the cable core 1 and the separator layer 2. Simultaneously, when the cable is bent, the optical fiber 5 bends along the bending angle of the cable core 1. Due to the large diameter of the cable core 1, the minimum bending angle of the cable is increased, preventing the optical fiber 5 from breaking due to a small bending angle. The spiral groove 6 on the outer surface of the separator layer 2 restricts the position of the conductors 7, ensuring the stability and uniformity of the spacing of the conductors 7, reducing mutual interference between conductors 7, and improving transmission efficiency. The filler strip 8 fills the gaps between the conductors 7, further fixing the conductors 7 while improving the stability of the conductors. 7. To improve heat dissipation efficiency, the metal braided layer 10 can effectively block external electromagnetic fields from interfering with the internal signal transmission of the cable, and at the same time prevent the signals transmitted inside the cable from radiating outward, avoiding electromagnetic interference to surrounding electronic equipment. Meanwhile, the first protective layer 9 and the second protective layer 11 can prevent the metal braided layer 10 from causing friction damage to the cable. The tensile layer 13 and the tensile rope 14 can not only improve the tensile strength of the cable, but also protect the inner protective layer 12, preventing external forces from damaging the inside. The inner protective layer 12 can provide a second layer of protection for the inside of the cable, preventing rainwater and other liquids from entering the inside of the cable and affecting its use after the outer protective layer 15 is damaged.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A composite optical fiber cable, comprising: The cable core (1) is characterized in that a partition layer (2) is fixedly connected to the outer surface of the cable core (1), a first groove (3) is provided on the outer surface of the cable core (1), a second groove (4) is provided on the inner surface of the partition layer (2), an optical fiber (5) is fixedly connected between the first groove (3) and the second groove (4), a spiral groove (6) is provided on the outer surface of the partition layer (2), a conductor (7) is fixedly connected to the inner surface of the spiral groove (6), a filler strip (8) is provided between the conductors (7), and a first protective layer (9) is fixedly connected to the outer surface of the filler strip (8). The outer surface of the first protective layer (9) is provided with a metal braided layer (10), the outer surface of the metal braided layer (10) is provided with a second protective layer (11), the outer surface of the second protective layer (11) is fixedly connected with an inner protective layer (12), the outer surface of the inner protective layer (12) is fixedly connected with a tensile layer (13), the inner surface of the tensile layer (13) is provided with a tensile rope (14), and the outer surface of the tensile layer (13) is fixedly connected with an outer protective layer (15).

2. The composite optical fiber cable according to claim 1, characterized in that, The first groove (3) and the second groove (4) are positioned correspondingly, and the cable core (1) is made of rubber.

3. The composite optical fiber cable according to claim 1, characterized in that, The material of the separator layer (2) is cross-linked polyethylene.

4. The composite optical fiber cable according to claim 1, characterized in that, The outer surface of the separator layer (2) is fixedly connected to the filler strip (8), and the filler strip (8) is made of ceramicized silicone rubber.

5. A composite optical fiber cable according to claim 1, characterized in that, The metal braided layer (10) is made of copper wire.

6. A composite optical fiber cable according to claim 1, characterized in that, The tensile ropes (14) are multiple and arranged in a ring array, and the tensile ropes (14) are made of aramid fiber.

7. A composite optical fiber cable according to claim 1, characterized in that, Both the inner protective layer (12) and the outer protective layer (15) are made of flame-retardant polyvinyl chloride.

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