Single-core circular leading-in optical cable

Abstract

The utility model discloses a single-core circular leading-in optical cable, which enables an optical unit not to be easily extruded from two sides and ensures that the optical unit performs stable and reliable data transmission. The optical fiber connector comprises a tight tube optical fiber which comprises an optical fiber and a tight tube part; the first aramid yarn wrapping layer is formed by combining a plurality of aramid yarns; an inner sheath; the second aramid yarn wrapping layer is formed by combining a plurality of aramid yarns; and an outer sheath; the periphery of the tight tube optical fiber is coated with the first aramid yarn coating layer, the periphery of the first aramid yarn coating layer is coated with the inner sheath, the periphery of the inner sheath is coated with the second aramid yarn coating layer, the periphery of the second aramid yarn coating layer is coated with the outer sheath, and the outer sheath is coated with the first aramid yarn coating layer and the second aramid yarn coating layer. The two sides of the outer sheath in the longitudinal cutting state are each internally provided with a cylindrical cavity, the cylindrical cavities are filled with reinforcing lines, and the reinforcing lines arranged on the two sides of the optical unit are arranged in a horizontal state.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cable structures, in particular to a single-core circular lead-in optical cable. Background Art

[0002] With the development of optical communication networks, optical cables have become the main component of optical cable lines. The existing circular optical cables have an optical unit at the center, and an inner sheath and an outer sheath are set outside the optical unit. In actual use, the strength of this structure is relatively low, and the two sides are easily squeezed by other cables, which in turn causes the optical unit to be squeezed, which may interfere with data transmission. Therefore, it is urgent to develop a stable and reliable circular optical cable that ensures that the optical unit is not squeezed from the side. Summary of the invention

[0003] In view of the above problems, the utility model provides a single-core circular lead-in optical cable, which makes it difficult for the optical unit to be squeezed on both sides, thereby ensuring that the optical unit performs stable and reliable data transmission.

[0004] A single-core circular optical cable, characterized in that it comprises:

[0005] A tight-buffered optical fiber, comprising an optical fiber and a tight-buffered portion;

[0006] A first aramid yarn covering layer, which is formed by combining a plurality of aramid yarns;

[0007] Inner sheath;

[0008] A second aramid yarn covering layer, which is formed by combining a plurality of aramid yarns;

[0009] and an outer sheath;

[0010] The outer periphery of the tight-buffered optical fiber is coated with the first aramid yarn coating layer, the outer periphery of the first aramid yarn coating layer is coated with the inner sheath, the outer periphery of the inner sheath is coated with the second aramid yarn coating layer, and the outer periphery of the second aramid yarn coating layer is coated with the outer sheath. A column cavity is respectively provided on both sides of the outer sheath in a longitudinal section, and a reinforcement wire is plugged in the column cavity. The reinforcement wires arranged on both sides of the optical unit are arranged in a horizontal state.

[0011] It is further characterized by:

[0012] A tear rope is also provided at a position where the second aramid yarn coating layer is in contact with the outer sheath, and the tear rope is used to reliably tear off the outer sheath at the corresponding position;

[0013] The upper surface of the outer sheath is provided with a contoured inwardly concave arc groove, which is used to position and place the upper cable, so that the upper cable is not easy to slide off, ensuring that the position of the assembled cable group is stable and reliable. At the same time, the configuration of the contoured inwardly concave arc groove enables the arrangement direction of the entire incoming optical cable to be reliably identified;

[0014] The upper surface of the outer sheath is provided with an inwardly concave notch groove, and the inwardly concave notch groove is filled with a color strip, and the color strip has different colors according to different lines, so that it can be quickly and reliably distinguished later;

[0015] The reinforcement line is made of glass fiber reinforced plastic, which ensures the stability and reliability of the reinforcement line.

[0016] After adopting the above technical scheme, the outer periphery of the optical unit composed of the tight-buffered optical fiber is sequentially coated with the first aramid yarn coating layer, the inner sheath, the second aramid yarn coating layer, and the outer sheath, wherein the outer sheath has corresponding reinforcement wires built into the positions on both sides corresponding to the optical unit, the first aramid yarn coating layer forms an inner reinforcement structure, and the second aramid yarn coating layer forms an outer reinforcement structure, and the two combined with the reinforcement wires can reliably protect the optical unit, and the arrangement of the reinforcement wires on both sides makes it difficult for the optical unit to be squeezed on both sides, thereby ensuring that the optical unit can perform stable and reliable data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the longitudinal structure of the first specific embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the longitudinal structure of the second specific embodiment of the utility model;

[0019] The names corresponding to the serial numbers in the figure are as follows:

[0020] Tight-buffered optical fiber 10, optical fiber 11, tight-buffered portion 12, first aramid yarn coating layer 20, inner sheath 30, second aramid yarn coating layer 40, outer sheath 50, column cavity 51, contoured inwardly concave arc groove 52, inwardly concave notch groove 53, reinforcing wire 60, tear cord 70, and color strip 80. DETAILED DESCRIPTION

[0021] Single core round drop cable, see Figure 1 , which includes a tight-buffered optical fiber 10, a first aramid yarn coating layer 20, an inner sheath 30, a second aramid yarn coating layer 40, and an outer sheath 50;

[0022] The tight-buffered optical fiber 10 comprises an optical fiber 11 and a tight-buffered portion 12; a first aramid yarn coating layer 20 is formed by combining a plurality of aramid yarns; a second aramid yarn coating layer 40 is formed by combining a plurality of aramid yarns;

[0023] The outer periphery of the tight-sleeved optical fiber 10 is coated with a first aramid yarn coating layer 20, the outer periphery of the first aramid yarn coating layer 20 is coated with an inner sheath 30, the outer periphery of the inner sheath 30 is coated with a second aramid yarn coating layer 40, and the outer periphery of the second aramid yarn coating layer 40 is coated with an outer sheath 50. A column cavity 51 is respectively provided on both sides of the outer sheath 50 in a longitudinal section state, and a reinforcing wire 60 is plugged in the column cavity 51. The reinforcing wires 60 arranged on both sides of the tight-sleeved optical fiber 10 are arranged in a horizontal state.

[0024] During specific implementation: the optical fiber 11 is a single-core optical fiber of G.657A2, the outer diameter of the tight-fitting part 12 is 0.9±0.05mm, and its material is PVC or LSZH, the thickness of the inner sheath 30 is 0.40±0.05mm, and its material is LSZH, and the outer diameter after coating is 2.4±0.1mm, the outer sheath 50 is made of black HDPE, and the outer diameter after coating is 5.0±0.2mm, and the diameter of each reinforcement wire 60 is 0.5mm, and its material is glass fiber reinforced plastic.

[0025] In a specific implementation, a tear rope 70 is further provided at the position where the second aramid yarn coating layer 40 is in contact with the outer sheath. The tear rope 70 is used to reliably tear off the outer sheath at the corresponding position. The color of the tear rope 70 is red for reliable identification.

[0026] In the specific embodiment 1, see Figure 1 The upper surface of the outer sheath 50 is provided with a contoured concave arc groove 52, which is used to position and place the upper cable, so that the upper cable is not easy to slide and fall off, ensuring that the position of the assembled cable group is stable and reliable. At the same time, the setting of the contoured concave arc groove 52 makes the layout direction of the entire introduced optical cable reliably identifiable.

[0027] In the specific embodiment 2, see Figure 2 The upper surface of the outer sheath 50 is provided with an inwardly recessed notch 53, and the inwardly recessed notch 53 is filled with a color strip 80. The color strip 80 has different colors according to different lines, so that it can be quickly and reliably distinguished later, without repeatedly pulling the main line to distinguish the lines. After the color strip 80 is filled in place, the outer sheath 50 and the color strip 80 form a circular surface structure as a whole.

[0028] The outer periphery of the optical unit composed of the tight-buffered optical fiber is sequentially coated with a first aramid yarn coating layer, an inner sheath, a second aramid yarn coating layer, and an outer sheath, wherein the outer sheath has corresponding reinforcement wires built into the positions on both sides corresponding to the optical unit. The first aramid yarn coating layer forms an inner reinforcement structure, and the second aramid yarn coating layer forms an outer reinforcement structure. The two combined with the reinforcement wires can reliably protect the optical unit. The arrangement of the reinforcement wires on both sides makes it difficult for the optical unit to be squeezed on both sides, thereby ensuring stable and reliable data transmission of the optical unit.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Single core round optical cable, characterized in that: It includes: A tight-buffered optical fiber, comprising an optical fiber and a tight-buffered portion; A first aramid yarn covering layer, which is formed by combining a plurality of aramid yarns; Inner sheath; A second aramid yarn covering layer, which is formed by combining a plurality of aramid yarns; and an outer sheath; The outer periphery of the tight-buffered optical fiber is coated with the first aramid yarn coating layer, the outer periphery of the first aramid yarn coating layer is coated with the inner sheath, the outer periphery of the inner sheath is coated with the second aramid yarn coating layer, and the outer periphery of the second aramid yarn coating layer is coated with the outer sheath. A column cavity is respectively provided on both sides of the outer sheath in a longitudinal section, and a reinforcement wire is plugged in the column cavity. The reinforcement wires arranged on both sides of the optical unit are arranged in a horizontal state.

2. The single-core round optical cable according to claim 1, characterized in that: A tear rope is also provided at a position of the second aramid yarn coating layer that is in contact with the outer sheath, and the tear rope is used to reliably tear off the outer sheath at the corresponding position.

3. The single-core round optical cable according to claim 1, characterized in that: The upper surface of the outer sheath is provided with a contoured inwardly concave arc groove.

4. The single-core round optical cable according to claim 1, characterized in that: The upper surface of the outer sheath is provided with an inwardly concave notch groove, and the inwardly concave notch groove is filled with a color strip, and the color of the color strip is different according to different lines.

5. The single-core round optical cable according to claim 1, characterized in that: The material of the reinforcement line is glass fiber reinforced plastic.

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