Indoor composite optical cable based on micro beam tube structure

Abstract

The utility model relates to an indoor composite optical cable based on a micro-beam tube structure, which comprises an outer sheath, an inner sheath, a central reinforcing member, a plurality of micro-beam tube units distributed along the circumferential direction, a waterproof layer and a filling structure, the outer sheath wraps the outermost layer of the optical cable, and the inner side of the outer sheath is provided with a spirally wound nonmetal tensile belt. The inner sheath is coaxially nested in the outer sheath, an annular gap is formed between the inner sheath and the outer sheath, two non-metal reinforcing members are symmetrically embedded in the annular gap and are located at the axis position of the optical cable, and the micro beam tube unit comprises a plurality of optical fibers and a microporous polyester belt wrapping the optical fibers. The micro beam tube units are spirally twisted and arranged by taking the central reinforcing piece as a circle center, the central reinforcing piece is located at the axis position of the optical cable and provides stable support for the whole optical cable, and the micro beam tube units are spirally twisted and arranged by taking the central reinforcing piece as the circle center, so that the optical cable is endowed with good flexibility and bending resistance.

Description

Technical Field

[0001] This utility model relates to the field of optical cables, and in particular to an indoor composite optical cable based on a micro-tube structure. Background Technology

[0002] With the rapid development of information technology, the demand for high-speed and stable network connections indoors is increasing, which has led to continuous improvement in the performance requirements of indoor composite optical cables. Traditional indoor optical cables have exposed many problems when facing complex indoor environments.

[0003] In terms of mechanical performance, some existing indoor optical cables lack sufficient tensile strength. When subjected to tension during cabling, they are prone to internal structural damage, leading to fiber breakage and affecting signal transmission. Moreover, their bending resistance is also poor. When it is necessary to bend the optical cable to adapt to the indoor layout, excessive bending often causes signal attenuation or even interruption. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an indoor composite optical cable based on a micro-tube structure.

[0005] The indoor composite optical cable based on a micro-tube structure provided by this utility model adopts the following technical solution:

[0006] An indoor composite optical cable based on a microtube structure includes an outer sheath, an inner sheath, a central reinforcement, multiple circumferentially distributed microtube units, a water-blocking layer, and a filling structure. The outer sheath covers the outermost layer of the optical cable and has a spirally wound non-metallic tensile tape on its inner side. The inner sheath is coaxially nested inside the outer sheath, forming an annular gap between them. Two non-metallic reinforcements are symmetrically embedded in the annular gap and located at the axis of the optical cable. Each microtube unit includes several optical fibers and a microporous polyester tape covering the optical fibers. The microtube units are spirally twisted around the central reinforcement. The filling structure is a flexible silicone column, which is axially inserted between the central reinforcement and the microtube units.

[0007] Optionally, the spiral twisting pitch of the microtube unit is 80-120mm, and the twisting directions of adjacent microtube units are opposite, forming a bidirectional balanced twisting structure.

[0008] Optionally, the non-metallic reinforcing member is a composite tape of aramid fiber and epoxy resin, and the cross-section of the non-metallic reinforcing member is crescent-shaped with the concave surface facing the optical cable axis.

[0009] Optionally, a pressure-resistant layer is provided between the outer sheath and the inner sheath. The pressure-resistant layer is a ring-shaped skeleton formed by multiple V-shaped corrugated metal sheets hinged together circumferentially.

[0010] Optionally, the surface of the flexible silicone column is provided with a spirally twisted guide groove, and a conductive copper wire is embedded in the guide groove.

[0011] Optionally, the central reinforcement is a glass fiber reinforced plastic round rod.

[0012] Optionally, the water-blocking layer is composed of water-blocking yarn and water-blocking powder, and fills the gap area between the microtube unit and the inner sheath.

[0013] Optionally, the microporous polyester tape has a micropore diameter of 5-8 μm, a porosity of 15-20%, and a tape thickness of 0.08-0.12 mm.

[0014] In summary, this utility model has at least one of the following beneficial technical effects:

[0015] 1. The central reinforcement is located at the core of the optical cable, providing stable support for the entire optical cable. The micro-tube units are arranged in a spiral twist around the central reinforcement. This layout gives the optical cable good flexibility and bending resistance. The filling structure is a flexible silicone column that runs through the central reinforcement and the micro-tube units. It not only fills the gaps and makes the internal structure of the optical cable more compact, but also plays a buffering role. When the optical cable is subjected to external impact, the flexible silicone column can absorb some of the energy.

[0016] 2. When optical cables need to be bent to adapt to complex indoor cabling environments, the stranded structure within this pitch range can effectively disperse bending stress and avoid stress concentration in a local area, thereby reducing the risk of fiber breakage or signal attenuation due to bending.

[0017] 3. A pressure-resistant layer is also provided between the outer sheath and the inner sheath. The pressure-resistant layer is a ring skeleton formed by multiple V-shaped corrugated metal sheets hinged end to end along the circumference. When external pressure is applied to the optical cable, the V-shaped structure can effectively disperse the pressure and prevent the pressure from concentrating at a certain point and causing damage to the internal structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an indoor composite optical cable based on a micro-tube structure.

[0019] Figure 2 This is a side view of an indoor composite optical cable based on a micro-tube structure.

[0020] Figure 3 yes Figure 2 A cross-sectional view along line AA.

[0021] Explanation of reference numerals in the attached drawings: 1. Outer sheath; 2. Inner sheath; 3. Microtube unit; 31. Microporous polyester tape; 32. Optical fiber; 4. Water-blocking layer; 5. Filling structure; 6. Compression-resistant layer; 61. V-shaped corrugated metal sheet; 7. Conductive copper wire; 8. Non-metallic reinforcing member; 9. Central reinforcing member. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] This utility model discloses an indoor composite optical cable based on a micro-tube structure. (Refer to...) Figure 1-3An indoor composite optical cable based on a microtube structure includes an outer sheath (1), an inner sheath (2), a central reinforcement (9), multiple microtube units (3) distributed circumferentially, a water-blocking layer (4), and a filling structure (5). The outer sheath (1) covers the outermost layer of the optical cable, and its inner side is provided with a spirally wound non-metallic tensile tape. The inner sheath (2) is coaxially nested inside the outer sheath (1), and an annular gap is formed between the two. Two non-metallic reinforcements (8) are symmetrically embedded in the annular gap and are located at the axis of the optical cable. The microtube unit (3) includes several optical fibers (32) and a microporous polyester tape (31) covering the optical fibers (32). The microtube unit (3) is spirally twisted with the central reinforcement (9) as the center. The filling structure (5) is a flexible silicone column. The filling structure (5) is axially inserted between the central reinforcement (9) and the micro-tube unit (3). With this design, the central reinforcement (9) is located at the center of the optical cable, providing a stable support for the entire optical cable. The micro-tube unit (3) is spirally twisted with the central reinforcement (9) as the center. This layout gives the optical cable good flexibility and bending resistance. The flexible silicone column inserted between the central reinforcement (9) and the micro-tube unit (3) not only fills the gaps and makes the internal structure of the optical cable more compact, but also plays a buffering role. When the optical cable is subjected to external force impact, the flexible silicone column can absorb some energy.

[0026] The spiral stranding pitch of the micro-tube unit (3) is 80-120mm. The stranding directions of adjacent micro-tube units (3) are opposite, forming a bidirectional balanced stranding structure. When the optical cable needs to be bent to adapt to the complex indoor wiring environment, the stranding structure within this pitch range can effectively disperse the bending stress and avoid stress concentration in a certain local area, thereby reducing the risk of fiber (32) breakage or signal attenuation caused by bending.

[0027] The non-metallic reinforcing member (8) is a composite tape of aramid fiber and epoxy resin. The cross-section of the non-metallic reinforcing member (8) is crescent-shaped, and the concave surface faces the direction of the optical cable axis. An anti-pressure layer (6) is also provided between the outer sheath (1) and the inner sheath (2). The anti-pressure layer (6) is a ring skeleton formed by multiple V-shaped corrugated metal sheets (61) hinged end to end along the circumference. When external pressure is applied to the optical cable, the V-shaped structure can effectively disperse the pressure and avoid the pressure from concentrating at a certain point and causing damage to the internal structure.

[0028] The flexible silicone column has a spirally twisted guide groove on its surface, and a conductive copper wire is embedded in the guide groove (7).

[0029] In this utility model, the water-blocking layer (4) is composed of water-blocking yarn and water-blocking powder, and fills the gap area between the microtube unit (3) and the inner sheath (2);

[0030] In this utility model, the central reinforcing member (9) is a glass fiber reinforced plastic round rod;

[0031] In this invention, the microporous polyester tape (31) has a micropore diameter of 5-8 μm, a porosity of 15-20%, and a tape thickness of 0.08-0.12 mm.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A microstrucmred indoor hybrid fiber cable based on a microstrucmred tube, characterized in that: It includes outer sheath (1), inner sheath (2), center reinforcing member (9), a plurality of circumferentially distributed micro beam tube unit (3), water blocking layer (4) and filling structure (5), the outer sheath (1) is coated in the outermost layer of optical cable, the inner side is provided with spiral wound non-metallic tensile belt, the inner sheath (2) is coaxially nested in the outer sheath (1) inside, the annular gap is formed between the two, the annular gap is symmetrically embedded with two non-metallic reinforcing members (8), and is located in the optical cable axial position, the micro beam tube unit (3) contains several optical fibers (32) and micro-porous polyester tape (31) covering optical fiber (32), the micro beam tube unit (3) is arranged in spiral twist around the center reinforcing member (9) as the center, the filling structure (5) is flexible silica gel column, the filling structure (5) is axially arranged between the center reinforcing member (9) and micro beam tube unit (3).

2. The indoor composite cable based on micro-bundle tube structure according to claim 1, characterized in that: The spiral twist pitch of the micro beam tube unit (3) is 80-120mm, the twist direction of adjacent micro beam tube unit (3) is opposite, forming a bidirectional balanced twist structure.

3. The indoor composite cable based on micro-bundle tube structure according to claim 1, characterized in that: The non-metallic reinforcing member (8) is aramid fiber and epoxy resin composite strip, the non-metallic reinforcing member (8) is crescent in cross section, and the concave surface faces the optical cable axial direction.

4. The indoor composite cable based on microstrucrured tubes according to claim 1, characterized in that: The anti-pressure layer (6) is further provided between the outer sheath (1) and the inner sheath (2), the anti-pressure layer (6) is composed of a plurality of V-shaped corrugated metal sheets (61) which are hingedly connected along the circumference to form an annular skeleton.

5. The indoor composite cable based on microstrucrured tubes according to claim 1, characterized in that: The flexible silica gel column is provided with a spiral twisted guide groove, and a conductive copper wire (7) is embedded in the guide groove.

6. The indoor composite cable based on microstrucrured tubes according to claim 1, characterized in that: The center reinforcing member (9) is a glass fiber reinforced plastic round rod.

7. The indoor composite cable based on microstrucrured tubes according to claim 1, characterized in that: The water blocking layer (4) is composed of water blocking yarn and water blocking powder, and is filled in the gap area between the micro beam tube unit (3) and the inner sheath (2).

8. The indoor composite cable based on microstrucrured tubes according to claim 1, characterized in that: The micro-porous polyester tape (31) has a micro-pore diameter of 5-8μm, a porosity of 15-20%, and a tape thickness of 0.08-0.12mm.

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