Hollow optical fiber cable structure with low elongation, high tensile strength and high protectiveness

Abstract

The utility model relates to a hollow optical fiber cable structure with low elongation, high tensile strength and high protectiveness. The hollow optical fiber cable structure comprises at least one optical fiber reinforcing module and an optical cable sheath, the optical fiber reinforcement module comprises an optical fiber core wire and an optical fiber reinforcement core; a channel hole is formed in the optical fiber reinforcing core and penetrates through the two ends of the optical fiber reinforcing core; the number of the optical fiber core wire is at least one, the optical fiber core wire is arranged in the channel hole in the length direction of the channel hole, and the length of the optical fiber core wire is equal to that of the optical fiber reinforcing core; the optical cable sheath wraps the outer surface of the optical fiber reinforcing core, and the optical fiber reinforcing core and the channel hole are exposed outside. According to the structure of the hollow optical fiber reinforced core, the optical fiber core wires are wrapped in the optical fiber reinforcer together when the optical fiber reinforced core is produced, and the optical fiber core wires are in a free moving state.

Description

Technical Field

[0001] The utility model relates to an optical fiber cable reinforcement core, in particular to a hollow optical fiber cable structure with low elongation, high tensile strength and high protection. Background Art

[0002] As a key component of modern communication networks, indoor optical cables are responsible for efficiently and stably transmitting optical signals to user terminals. They are an indispensable infrastructure for building smart homes, data centers, office buildings, etc. With the continuous advancement of technology, the types of indoor optical cables are increasing, and each type has its own unique characteristics, advantages and potential disadvantages.

[0003] At present, the commonly used indoor optical cables on the market include: butterfly optical cables, tight-buffered optical cables, branch optical cables, flame-retardant optical cables, etc. These optical cables have the following defects: 1. Complex manufacturing process: The optical cable factory needs to arrange the components in relative positions first, and then combine them together through an extruder and a specific mold. 2. There are certain requirements for construction technology: Fiber optic connection and fusion require professional technology and equipment support, and the construction difficulty and cost are relatively high. 3. Fragility: The optical fiber inside the optical cable is relatively fragile. During installation and use, excessive bending, pulling and other operations should be avoided to avoid damaging the optical fiber. 4. Bending radius limit: Different types of optical cables have different bending radius requirements, which must be strictly followed during installation to avoid affecting transmission performance. 5. The optical cable suspension line reinforcement is a metal part, which interferes with signal propagation.

[0004] Compared with the patent document CN1472560A, the patent describes a butterfly optical cable, such as Figure 1 As shown, 11 is the optical fiber core, 12 is the optical fiber reinforcement core, and 14 is the lifting reinforcement. After the components are arranged in relative positions, they are finally combined together through an extruder and a specific mold. After cooling, a butterfly-shaped optical fiber cable is finally formed.

[0005] The current solution has the following defects: 1. The technical process is relatively complex and requires specific molds and equipment. 2. The optical fiber sheath is easily damaged, and once damaged, it will affect the use of optical fiber communication. 3. Due to the large differences in the tension coefficients of various materials such as optical fiber, optical fiber reinforcement core, hanging reinforcement, and sheath (the hanging line reinforcement pay-off tension is 950g-1050g; the optical fiber reinforcement core pay-off tension is 480g-520g; the optical fiber pay-off tension is 90g-110g; the optical cable take-up tension is 1400g-1600g), when the optical cable is bent or pulled, the most fragile optical fiber core is most easily damaged. 4. For some special requirements for the adhesion between the optical fiber reinforcement core and the sheath, the optical fiber reinforcement core needs to be sprayed. Utility Model Content

[0006] The utility model aims to provide a hollow optical fiber cable structure with low elongation, high tensile strength and high protection, and a hollow optical fiber reinforcement core structure. The optical fiber core wire is wrapped together in the optical fiber reinforcement member during the production of the optical fiber reinforcement core and is in a free-moving state.

[0007] In order to achieve the purpose of the above utility model, the utility model provides a low elongation, high tensile strength and high protection hollow optical fiber cable structure, comprising at least one optical fiber reinforcement module and an optical cable sheath;

[0008] The optical fiber reinforcement module includes an optical fiber core wire and an optical fiber reinforcement core;

[0009] A channel hole is provided in the optical fiber reinforcement core, and the channel hole passes through two ends of the optical fiber reinforcement core;

[0010] The number of the optical fiber core wire is at least one, the optical fiber core wire is arranged in the channel hole along the length direction of the channel hole, and the length of the optical fiber core wire is equal to the length of the optical fiber reinforcement core;

[0011] The optical cable sheath covers the outer surface of the optical fiber reinforcement core, and the optical fiber reinforcement core and the channel hole are exposed to the outside.

[0012] Optionally, the cross-section of the channel hole is circular, the number of the optical fiber core wire is one, the diameter of the channel hole is larger than the outer diameter of the optical fiber core wire, and the optical fiber core wire is arranged in the channel hole.

[0013] Optionally, the cross-section of the channel hole is a waist-shaped hole; the number of the optical fiber core wires is at least two, the inner wall width of the channel hole is greater than the outer diameter of the optical fiber core wire, and the optical fiber core wire is arranged in the channel hole.

[0014] Specifically, the number of the optical fiber cores is 4.

[0015] Optionally, the optical fiber reinforcement core is circular.

[0016] Optionally, the optical fiber reinforcement core is elliptical.

[0017] Specifically, the material of the optical fiber core is glass fiber.

[0018] Preferably, when the number of the optical fiber reinforcement modules is ≥2, the optical fiber reinforcement cores have different colors.

[0019] Compared with the prior art, the utility model also has the following advantages:

[0020] (1) The appearance of the optical cable is simple, which greatly reduces the process difficulty of the optical cable factory during production. There is no need to arrange multiple parts. It only needs to wrap the sheath around the optical fiber reinforcement core, and the shape is standardized;

[0021] (2) Since the optical fiber is wrapped in the middle of the optical fiber reinforcement, even if the cable sheath is damaged, it will not affect the optical fiber, thus improving the protection of the optical fiber;

[0022] (3) Since the optical fiber is in a free-moving state in the reinforcement, the optical fiber will not be affected when the optical cable is bent or pulled due to the different tension coefficients of each component;

[0023] (4) Compared with existing optical cables, the cross-sectional area of ​​the optical cables will be reduced by 1 / 3-1 / 2, but the tensile strength will be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a butterfly optical cable in the background technology;

[0025] Figure 2 An exploded view of the low elongation, high tensile strength and high protection hollow optical fiber cable structure having only one optical fiber core in Example 1;

[0026] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0027] Figure 4 It is a structural schematic diagram of a hollow optical fiber cable structure with low elongation, high tensile strength and high protection having only one optical fiber core wire in Example 1;

[0028] Figure 5 It is a structural schematic diagram of a hollow optical fiber cable structure with low elongation, high tensile strength and high protection having only four optical fiber cores in Example 1;

[0029] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0030] Figure 7 This is a structural schematic diagram of a low-elongation, high-tensile-strength, and high-protection hollow optical fiber cable structure in Example 2. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] The utility model discloses a hollow optical fiber cable structure with low elongation, high tensile strength and high protection, comprising an optical fiber sheath and an optical fiber strengthening module.

[0034] The optical fiber reinforcement module includes an optical fiber core 1 and an optical fiber reinforcement core 2;

[0035] From the inside to the outside, it includes an optical fiber core 1, an optical fiber reinforcement core 2 and an optical cable sheath 3.

[0036] A channel hole 4 is provided in the optical fiber reinforcement core 2 , and the channel hole 4 passes through both ends of the optical fiber reinforcement core 2 .

[0037] The number of the optical fiber core wire 1 is at least one, and the optical fiber core wire 1 is arranged in the channel hole 4 along the length direction of the channel hole 4, and the length of the optical fiber core wire 1 is equal to the length of the optical fiber reinforcement core 2.

[0038] In this embodiment, if Figures 2 to 4 As shown, the cross section of the channel hole 4 is circular, the number of the optical fiber core wire 1 is one, the diameter of the channel hole 4 is larger than the outer diameter of the optical fiber core wire 1 , and the optical fiber core wire 1 is arranged in the channel hole 4 .

[0039] In addition, if Figure 5 and Figure 6 As shown, the cross section of the channel hole 4 can also be set to a waist-shaped hole; the number of the optical fiber core wires 1 is at least two, the inner wall width of the channel hole 4 is greater than the outer diameter of the optical fiber core wire 1, and the optical fiber core wire 1 is arranged in the channel hole 4. Further, the number of the optical fiber core wires 1 is four.

[0040] The optical cable sheath 3 covers the outer surface of the optical fiber reinforcement core 2, and the optical fiber reinforcement core 2 and the channel hole 4 are exposed to the outside.

[0041] Since the optical fiber core 1 is wrapped in the middle of the optical fiber reinforcement core 2, even if the optical cable sheath 3 is damaged, it will not affect the optical fiber core 1, thereby improving the protection of the optical fiber core 1; since the optical fiber core 1 is in a free-moving state in the optical fiber reinforcement core 2, when the optical cable is bent or pulled, it will not be affected by the different tension coefficients of each component. The original metal optical cable suspension wire reinforcement is omitted, and the entire optical fiber cable is completely non-metallic, which does not interfere with the signal.

[0042] Compared with existing optical cables, the cross-sectional area of ​​the optical cable will be reduced by 1 / 3-1 / 2, but the tensile strength will be greatly improved, mainly because the overall tensile strength is improved in the structure: the reinforcing core surrounds the optical fiber core wire as a whole. Because the optical fiber core wire 1 is free to move, even if there is external force interference, it only acts on the optical fiber sheath 3 and the optical fiber reinforcing core 2, and has no effect on the core wire inside.

[0043] The optical fiber reinforcement core 2 can be made into a circular or elliptical shape according to needs, and the number of optical fiber cores in the optical fiber reinforcement core can also be increased according to needs.

[0044] In this embodiment, the optical fiber core wire 1 is made of glass fiber.

[0045] Example 2

[0046] like Figure 7 As shown, in this embodiment, the number of the optical fiber reinforcement modules is 6, and the other structures are the same as those in Embodiment 1. The designer can set the number of optical fiber reinforcement modules according to actual conditions.

[0047] In this embodiment, the colors of the optical fiber reinforcement cores are different and they are distinguished by different colors to facilitate wiring.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hollow optical fiber cable structure with low elongation, high tensile strength and high protection, characterized in that: including at least one optical fiber strengthening module and an optical cable jacket; The optical fiber reinforcement module includes an optical fiber core wire and an optical fiber reinforcement core; A channel hole is provided in the optical fiber reinforcement core, and the channel hole passes through two ends of the optical fiber reinforcement core; The number of the optical fiber core wire is at least one, the optical fiber core wire is arranged in the channel hole along the length direction of the channel hole, and the length of the optical fiber core wire is equal to the length of the optical fiber reinforcement core; The optical cable sheath covers the outer surface of the optical fiber reinforcement core, and the optical fiber reinforcement core and the channel hole are exposed to the outside.

2. A hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to claim 1, characterized in that: The cross section of the channel hole is circular, the number of the optical fiber core wire is one, the diameter of the channel hole is larger than the outer diameter of the optical fiber core wire, and the optical fiber core wire is arranged in the channel hole.

3. The hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to claim 1, characterized in that: The cross section of the channel hole is waist-shaped; the number of the optical fiber core wires is at least two, the inner wall width of the channel hole is greater than the outer diameter of the optical fiber core wire, and the optical fiber core wire is arranged in the channel hole.

4. A hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to claim 3, characterized in that: The number of the optical fiber cores is 4.

5. A hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to any one of claims 1 to 4, characterized in that: The optical fiber reinforcement core is circular.

6. A hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to any one of claims 1 to 4, characterized in that: The optical fiber reinforcement core is elliptical.

7. A hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to any one of claims 1 to 4, characterized in that: The material of the optical fiber core is glass fiber.

8. The hollow optical fiber cable structure with low elongation, high tensile strength and high protection according to claim 1, characterized in that: When the number of the optical fiber reinforcement modules is ≥2, the optical fiber reinforcement cores have different colors.

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