Pressure-resistant mesh fiber optic ribbon cable

Abstract

This invention relates to the technical field of cables, and particularly to a pressure-resistant mesh fiber optic ribbon cable, which reduces cable diameter, has good flexibility, consumes less material, and lowers production costs. It includes a semi-circular sheath with an integrally formed base at the bottom, forming a notch between the base and the sheath. Transmission components are provided at both ends of the sheath. Each transmission component includes a sleeve and several circular ribbons disposed within the sleeve. The circular ribbons are arranged in a linear array, and adjacent circular ribbons in each horizontal row are connected by a hanger. Two symmetrically arranged support members are connected at the notch, with the tops of the support members tilted outwards to form a triangular structure between the sheath and the support members. The surface of the sheath is sequentially provided with an isolation sleeve, a steel tape armor layer, an outer jacket, and a wear-resistant heat-reflective coating.

Description

Technical Field

[0001] This invention relates to the technical field of cables, and in particular to pressure-resistant mesh fiber optic ribbon cables. Background Technology

[0002] With the development of the internet and the continuous advancement of communication technology, ribbon optical cables have found wide applications in the communications field. As a solution capable of meeting high-density transmission requirements and providing greater bandwidth, ribbon optical cables will play a crucial role in 5G base stations, data centers, and fiber optic networks. With the popularization and promotion of 5G, the ribbon optical cable market will continue to grow. In conclusion, ribbon optical cables have broad application areas and promising market prospects.

[0003] Existing ribbon optical cables are flat structures with full-coverage fiber ribbons, consuming a lot of raw materials. The flat structure is large, with a sleeve size of 3.0*0.3mm, increasing the overall size of the cable and raising costs. Furthermore, flat-shaped ribbon optical cables are difficult to peel, have poor flexibility and are easy to bend, and the edge fibers are easily damaged, resulting in high attenuation and affecting performance. Traditional ribbon optical cables use fiber grease to block water, which is difficult to clean during construction and may even pollute the environment, causing construction trouble and increasing splicing time. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a pressure-resistant mesh fiber optic cable, which reduces the cable diameter, has good flexibility, consumes less material, and reduces production costs.

[0005] The pressure-resistant mesh fiber optic ribbon cable of the present invention includes a semi-circular sheath, a base integrally formed at the bottom of the sheath, a notch formed between the base and the sheath, and transmission components provided at both ends of the sheath. The transmission components include a sleeve and a plurality of circular ribbons disposed within the sleeve. The circular ribbons are arranged in a linear array, and adjacent circular ribbons in each horizontal row are connected by a hanger. Two symmetrically arranged support members are connected at the notch. The top of the support members is inclined outward to form a triangular structure between the sheath and the support members. The surface of the sheath is sequentially provided with an isolation sleeve, a steel tape armor layer, an outer jacket, and a wear-resistant heat-reflective coating.

[0006] As a preferred embodiment of the present invention, the circular band includes a sheath and a cable core disposed within the sheath, and the sheath has a 0.01*0.01mm tear groove.

[0007] As a preferred embodiment of the present invention, the size of the wrapping sleeve is 1.2mm, and the size of the neck strap is 0.2*0.2mm.

[0008] As a preferred embodiment of the present invention, a water-blocking yarn is provided inside the sleeve, and the water-blocking yarn is evenly distributed in a circle and between the sleeve and the sleeve.

[0009] As a preferred embodiment of the present invention, a water-blocking strip is provided on the outside of the sleeve.

[0010] As a preferred embodiment of the present invention, a non-metallic reinforcing member is provided in the middle of the sheath.

[0011] In a preferred embodiment of the present invention, the sleeve is made of polypropylene.

[0012] As a preferred embodiment of the present invention, the cable core inside the sheath consists of twelve cables.

[0013] As a preferred embodiment of the present invention, the water-blocking yarn is a fine 300D water-blocking yarn.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the semi-circular structure has good stability and good wind and pressure resistance; the non-metallic reinforcing FRP inside the sheath is lightweight and has excellent tensile strength; the circular strips greatly reduce the cable diameter, making it lightweight, requiring less material, and low in cost; at the same time, the circular strips form a mesh, which has the advantages of good flexibility and good bending resistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the transmission component;

[0017] The following labels are used in the attached diagram: 1. Water-blocking tape; 2. Tear groove; 3. Sheath; 4. Non-metallic reinforcement; 5. Circular strip; 6. Water-blocking yarn; 7. Sleeve; 8. Support; 9. Hanger; 10. Isolation sleeve; 11. Steel strip armor layer; 12. Outer jacket; 13. Abrasion-resistant heat-reflective coating. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0021] Example

[0022] Reference Figure 1 and Figure 2 This embodiment provides a pressure-resistant mesh fiber optic ribbon cable, including a semi-circular sheath 3. The bottom of the sheath 3 is integrally formed with a base, and a notch is formed between the base and the sheath 3. The integral formation of the base and the sheath 3 can provide a solid foundation and enhance the structural stability of the entire cable. It helps to prevent the cable from deforming under external pressure, especially during installation or laying. The design of the base can provide additional support for the internal transmission components, especially at the notch formed between the sheath and the base. This helps to keep the position of the transmission components stable and avoid displacement or damage caused by external factors.

[0023] Both ends of the sheath 3 are provided with transmission components. The transmission components include a sleeve 7 and several circular strips 5 disposed inside the sleeve 7. The circular strips 5 are arranged in a linear array, and adjacent circular strips 5 in each horizontal row are connected by a hanger 9. Two symmetrically arranged support members 8 are connected at the notch. The top of the support member 8 is inclined outward so that a triangular structure is formed between the sheath 3 and the support member 8. The surface of the sheath 3 is sequentially provided with an isolation sleeve 10, a steel strip armor layer 11, an outer jacket 12, and a wear-resistant heat-reflective coating 13.

[0024] The sheath 3 is semi-circular with a notch in the middle. Its semi-circular structure provides good stability and excellent wind and pressure resistance. The semi-circular sheath 3 also better disperses external pressure, reducing direct impact on internal components. A non-metallic reinforcing member 4, made of FRP (fiberglass reinforced plastic), is located in the middle of the sheath 3. This member is lightweight and has excellent tensile strength. The sheath 3 is made of high flame-retardant, low-smoke, halogen-free material, offering excellent flame-retardant properties. Transmission components are located at both ends of the sheath 3. Each transmission component includes a sleeve 7 and several circular parallel strips 5 arranged in a linear array within the sleeve 7. Adjacent circular parallel strips 5 in each horizontal row are connected by a neck 9. Each circular parallel strip 5 includes a sheath and cable cores within the sheath. The sheath has a 0.01*0.01mm tear groove 2 for easy stripping. The sheath is 1.2mm in size, the neck 9 is 0.2*0.2mm in size, and there are twelve cable cores within the sheath. Figure 1As shown, twelve cable cores are evenly distributed inside the sheath, which has a circular cross-section. With this arrangement, the circular cable cores are small, with an overall size of 1.2mm. The central connecting neck is 90.2*0.2mm, and multiple connections are available. The number of connections can be increased as needed, forming a mesh. The number of connections is determined by the number of cores. The mesh structure is soft, flexible, and will not bend. In this embodiment, there are four circular cable cores in each horizontal row and four in each vertical row. Each horizontal row is considered one band, and each band measures 1.2*5.4mm. Each transmission component has 288 cable cores. The sheath size is 9.5mm, which is 3mm smaller than the previous flat cable size of 12.5mm, resulting in a smaller overall cable diameter and reduced material costs.

[0025] The support member 8 forms a triangular structure between the sheath 3 and the support member 8. This geometry can significantly improve the overall stability of the cable. The triangle is one of the most stable structures and can effectively disperse and resist external pressure. It also improves the compressive strength: Since the support members 8 are inclined outward from the bottom of the sheath 3, they can effectively disperse the pressure in the vertical direction and prevent the sheath 3 from deforming or being damaged by external pressure. This is crucial for protecting the internal optical fiber components.

[0026] The materials used in the isolation sleeve 10 are polyethylene, polyvinyl chloride and polyurethane, which can provide electrical insulation, prevent current leakage, reduce moisture penetration, protect the internal optical fiber from corrosion, and improve the overall mechanical strength and durability of the cable.

[0027] The steel strip armor layer 11 is made of galvanized steel strip or stainless steel strip, woven into a mesh and wrapped around the outside of the isolation sleeve 10 to enhance the mechanical strength of the cable, resist external pressure and damage, provide protection against rodent bites, and provide additional protection in buried or direct burial applications.

[0028] The outer jacket 12 is made of polyethylene, polyvinyl chloride and polyurethane, providing additional mechanical protection, preventing wear and scratches, resisting ultraviolet (UV) radiation, extending the cable's lifespan, and different colors can be selected as needed for easy identification and marking;

[0029] The abrasion-resistant heat-reflective coating 13 uses silicone resin, acrylic coating, and fluoropolymer coating to reflect heat, reduce the surface temperature of the cable, reduce heat damage, increase surface hardness, improve abrasion resistance, reduce wear, improve the appearance quality of the cable, and make it more durable.

[0030] Through the protective measures of the isolation sleeve 10, steel tape armor layer 11, outer jacket 12, and wear-resistant heat-reflective coating 13, the pressure-resistant mesh fiber optic cable can withstand more external pressure and environmental influences, thereby ensuring the long-term reliability and transmission performance of the cable. The selection of these materials not only takes into account mechanical strength, but also considers factors such as chemical corrosion resistance, temperature resistance, and UV resistance, ensuring that the cable can maintain good performance in a variety of environments.

[0031] As a preferred embodiment of the present invention, a water-blocking yarn 6 is provided inside the sleeve 7. The water-blocking yarn 6 is evenly distributed between the circular strip 5 and the sleeve 7. The water-blocking yarn 6 is a fine 300D water-blocking yarn 6, which has a fast water absorption speed, high expansion ratio, and strong tensile strength. The outer side of the sleeve 7 has a water-blocking strip 1, which can play a very good role in water permeability.

[0032] As a preferred embodiment of the present invention, the sleeve 7 is made of polypropylene to improve flexibility.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pressure-resistant mesh fiber optic ribbon cable, characterized in that, The sleeve (3) is semi-circular. The bottom of the sleeve (3) is integrally formed with a base. A notch is formed between the base and the sleeve. Transmission components are provided at both ends of the sleeve (3). The transmission components include a sleeve (7) and several circular strips (5) arranged in the sleeve (7). The circular strips (5) are arranged in a linear array and adjacent circular strips (5) in each horizontal row are connected by a hanger (9). Two symmetrically arranged support members (8) are connected at the notch. The top of the support member (8) is inclined outward so that a triangular structure is formed between the sleeve (3) and the support member (8). The surface of the sleeve (3) is sequentially provided with an isolation sleeve (10), a steel strip armor layer (11), an outer jacket (12), and a wear-resistant heat-reflective coating (13).

2. The compression-resistant mesh fiber optic ribbon cable as described in claim 1, characterized in that, The circular band (5) includes a sheath and a cable core disposed inside the sheath, and the sheath has a 0.01*0.01mm tear groove (2).

3. The compression-resistant mesh fiber optic ribbon cable as described in claim 2, characterized in that, The size of the wrapping sleeve is 1.2mm, and the size of the neck strap (9) is 0.2*0.2mm.

4. The compression-resistant mesh fiber optic ribbon cable as described in claim 3, characterized in that, Water-blocking yarn (6) is provided inside the sleeve (7), and the water-blocking yarn (6) is evenly distributed between the circular strip (5) and the sleeve (7).

5. The compression-resistant mesh fiber optic ribbon cable as described in claim 4, characterized in that, A water-blocking strip (1) is provided on the outside of the sleeve (7).

6. The compression-resistant mesh fiber optic ribbon cable as described in claim 5, characterized in that, A non-metallic reinforcing member (4) is provided in the middle of the sheath (3).

7. The compression-resistant mesh fiber optic ribbon cable as described in claim 6, characterized in that, The sleeve (7) is made of polypropylene.

8. The compression-resistant mesh fiber optic ribbon cable as described in claim 3, characterized in that, The cable core inside the sheath consists of twelve strands.

9. The compression-resistant mesh fiber optic ribbon cable as described in claim 4, characterized in that, The water-blocking yarn (6) is a fine 300D water-blocking yarn.

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