Indoor flexible optical cable

Abstract

The utility model discloses an indoor soft optical cable belongs to indoor optical cable technical field, the utility model discloses a cable body and honeycomb framework, the cable body includes cable core, and the outer surface of cable core has the tight cover compound, and the center of honeycomb framework is provided with the support cavity, and the tight cover is cooperated in the support cavity, and the outer ring of honeycomb framework has the buffer layer compound, and honeycomb framework is regular hexagon honeycomb hole array framework, the utility model discloses a structure design of honeycomb framework can effectively ensure the compression flat resistance of cable body, has improved the bending effect of cable body, fills the flame -retardant foaming thermoplastic polyurethane in the honeycomb hole on the honeycomb framework and provides the elastic support for the cable core in the support cavity through the buffer layer of silicon rubber material compound in the outer ring of honeycomb framework, reduces the risk that cable core appears slightly bent.

Description

Technical Field

[0001] This utility model relates to the field of indoor optical cable technology, specifically to an indoor flexible optical cable. Background Technology

[0002] Indoor flexible optical cables are designed specifically for communication cabling inside buildings. They are flexible, easy to bend, and flame-retardant, making them suitable for complex spatial environments. Currently, with the continuous upgrading of network environments, the demand for fiber-to-the-home is increasing, especially for outdoor-to-indoor type optical cables. Their performance requirements are far higher than those of simple indoor optical cables, thus urgently requiring upgrades and improvements to both indoor and outdoor optical cables.

[0003] To improve their resistance to compression and flattening, indoor flexible optical cables on the market are usually armored for compression protection. However, armored optical cables are prone to bending and stiffness, resulting in a large bending radius, poor applicability, and can easily affect the indoor deployment effect of the optical cable. Utility Model Content

[0004] The purpose of this utility model is to provide an indoor flexible optical cable. Through the honeycomb skeleton structure design, the anti-flattening performance of the optical cable body can be effectively ensured, the bending effect of the optical cable body can be improved, and the problem of the optical cable bending stiffness causing a large bending radius can be solved.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is an indoor flexible optical cable, including an optical cable body and a honeycomb skeleton. The optical cable body includes a cable core, and a tight sleeve is laminated on the outer surface of the cable core. A support cavity is opened at the center of the honeycomb skeleton, and the tight sleeve is fitted in the support cavity. A buffer layer is laminated on the outer ring of the honeycomb skeleton. The honeycomb skeleton is a regular hexagonal honeycomb array skeleton.

[0007] Furthermore, the cable core is made up of multiple optical fiber units twisted together.

[0008] Furthermore, the bushing is made of thermoplastic polyester elastomer.

[0009] Furthermore, the buffer layer is made of silicone rubber, and the outer surface of the buffer layer is laminated with a tensile layer, which is made of aramid fibers spirally twisted together.

[0010] Furthermore, the outer surface of the tensile layer is coated with a flexible layer, which is a thermoplastic polyurethane material, and the outer surface of the flexible layer is coated with a wear-resistant layer, which is a high-performance LSZH polyolefin material.

[0011] Furthermore, the honeycomb cells of the honeycomb skeleton are filled with flame-retardant foamed thermoplastic polyurethane, and the honeycomb skeleton is a high-strength, high-elastic modulus, flame-retardant thermoplastic engineering plastic.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, through the structural design of the honeycomb skeleton, provides strong radial support through the special honeycomb hole array structure on the honeycomb skeleton. As a high-strength, high-elastic modulus, flame-retardant thermoplastic engineering plastic, the honeycomb skeleton has high rigidity, creep resistance and good dimensional stability, which allows the impact pressure to be fully absorbed and dispersed by the honeycomb skeleton. This effectively weakens and buffers the impact pressure on the cable core, forming an effective anti-compression protection effect for the cable core. This effectively ensures the anti-flattening performance of the optical cable body, improves the bending effect of the optical cable body, enriches the application range of the optical cable body, ensures the indoor deployment effect of the optical cable body, and also improves the dynamic bending life of the optical cable body.

[0014] 2. This utility model fills the gaps in the honeycomb skeleton by filling the honeycomb holes with flame-retardant foamed thermoplastic polyurethane and adding a buffer layer of composite silicone rubber material on the outer ring of the honeycomb skeleton. This prevents the honeycomb skeleton from deforming too much under pressure, which would affect the roundness of the optical cable body. It can also provide elastic support for the cable core in the support cavity, reducing the risk of micro-bending of the cable core.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a flexible optical cable.

[0017] Figure 2 This is a schematic diagram of the cross-section of a flexible optical cable.

[0018] Figure 3 This is a schematic diagram of the honeycomb skeleton and cable core.

[0019] Figure 4 This is a schematic diagram of a honeycomb skeleton.

[0020] In the diagram: 1. Optical cable body; 2. Cable core; 3. Tightening sheath; 4. Honeycomb skeleton; 401. Support cavity; 5. Buffer layer; 6. Tensile layer; 7. Flexible layer; 8. Wear-resistant layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: an indoor flexible optical cable, including an optical cable body 1 and a honeycomb skeleton 4. The optical cable body 1 includes a cable core 2, which is formed by twisting multiple optical fiber units together. The outer surface of the cable core 2 is coated with a tight sleeve 3, which is a thermoplastic polyester elastomer. The thermoplastic polyester elastomer has good flexibility, elastic recovery rate, flame retardancy, adhesion to optical fibers and low temperature performance. The high elastic recovery rate can ensure that it does not deform under pressure, can buffer the cable core 2 under pressure, and quickly recover after the pressure is released.

[0023] A support cavity 401 is formed at the center of the honeycomb skeleton 4, and the tight sleeve 3 is fitted inside the support cavity 401. A buffer layer 5 is composited on the outer ring of the honeycomb skeleton 4. The honeycomb skeleton 4 is a regular hexagonal honeycomb array skeleton. The honeycomb cells of the honeycomb skeleton 4 are filled with flame-retardant foamed thermoplastic polyurethane to reduce the risk of micro-bending of the cable core 2 and prevent excessive deformation of the honeycomb skeleton 4 under pressure. The honeycomb skeleton 4 is a high-strength, high-elastic-modulus, flame-retardant thermoplastic engineering plastic that can provide elastic support for the cable core 2. The buffer layer 5 is made of silicone rubber, which can absorb impact pressure energy and weaken the impact pressure. A tensile layer 6 is composited on the outer surface of the buffer layer 5. The tensile layer 6 is made of spirally twisted aramid fibers. The optical cable body 1 is provided with the main tensile strength and auxiliary resistance to radial pressure, forming a second protective ring to maintain the integrity of the optical cable body 1. The outer surface of the tensile layer 6 is laminated with a flexible layer 7, which is made of thermoplastic polyurethane material and can provide cushioning and bonding for the optical cable body 1. The outer surface of the flexible layer 7 is laminated with an abrasion-resistant layer 8, which is made of high-performance LSZH polyolefin material and can provide the main compressive and abrasion-resistant surface for the optical cable body 1. The flexible layer 7 and the abrasion-resistant layer 8 form a high compressive double-layer sheath, which is the first and most important outer barrier for the optical cable body 1 to resist external pressure. Its hardness and strength directly determine the upper limit of the compressive flattening resistance of the optical cable body 1.

[0024] When the optical cable body 1 is subjected to external compression or impact, the resulting impact pressure passes through the wear-resistant layer 8, the flexible layer 7, and the tensile layer 6 and acts on the buffer layer 5. Due to the material properties of the buffer layer 5 as silicone rubber, part of the impact pressure is absorbed by the elastic deformation generated by the buffer layer 5. The remaining impact pressure passes through the buffer layer 5 and acts on the honeycomb skeleton 4. The special honeycomb hole array structure on the honeycomb skeleton 4 provides strong radial support, and the honeycomb skeleton 4, as a high-strength, high-elastic modulus, flame-retardant thermoplastic engineering plastic, has high rigidity, creep resistance, and good dimensional stability. This allows the impact pressure to be fully absorbed and dispersed by the honeycomb skeleton 4, thereby effectively weakening and buffering the impact pressure on the cable core 2 and forming an effective pressure-resistant protection effect for the cable core 2.

[0025] By filling the honeycomb holes on the honeycomb skeleton 4 with flame-retardant foamed thermoplastic polyurethane and the buffer layer 5 of composite silicone rubber material on the outer ring of the honeycomb skeleton 4, the gaps on the honeycomb skeleton 4 can be filled, preventing the honeycomb skeleton 4 from deforming too much under pressure and affecting the roundness of the optical cable body 1. It can also provide elastic support for the cable core 2 in the support cavity 401, reducing the risk of micro-bending of the cable core 2.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An indoor flexible optical cable, comprising an optical cable body (1), characterized in that: The optical cable body (1) includes a cable core (2), and the outer surface of the cable core (2) is covered with a tight sleeve (3). It also includes a honeycomb skeleton (4), a support cavity (401) is provided at the center of the honeycomb skeleton (4), the tight sleeve (3) is fitted in the support cavity (401), the outer ring of the honeycomb skeleton (4) is composite with a buffer layer (5), and the honeycomb skeleton (4) is a regular hexagonal honeycomb hole array skeleton.

2. The indoor flexible optical cable according to claim 1, characterized in that, The cable core (2) is made up of multiple optical fiber units twisted together.

3. The indoor flexible optical cable according to claim 1, characterized in that, The tight sleeve (3) is a thermoplastic polyester elastomer.

4. An indoor flexible optical cable according to claim 1, characterized in that, The buffer layer (5) is made of silicone rubber, and the outer surface of the buffer layer (5) is coated with a tensile layer (6), which is made of aramid fibers spirally twisted together.

5. An indoor flexible optical cable according to claim 4, characterized in that, The outer surface of the tensile layer (6) is coated with a soft layer (7), which is a thermoplastic polyurethane material. The outer surface of the soft layer (7) is coated with a wear-resistant layer (8), which is a high-performance LSZH polyolefin material.

6. An indoor flexible optical cable according to any one of claims 1-5, characterized in that, The honeycomb skeleton (4) is filled with flame-retardant foamed thermoplastic polyurethane, and the honeycomb skeleton (4) is a high-strength, high-elastic modulus, flame-retardant thermoplastic engineering plastic.

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