Central bundle tube optical cable

Abstract

The utility model discloses a kind of center beam tube optical cables, belong to optical cable technical field.The utility model includes optical fiber, optical fiber is externally covered and is provided with fibre paste, fibre paste outer wall is sleeved with center beam tube, center beam tube is externally provided with reinforcing sleeve, reinforcing sleeve is externally sleeved with sheath assembly, the inner wall of sheath assembly is fixedly connected with corrugated buffer layer, sheath assembly includes sheath body, recess is opened in the outer wall of sheath body, pull rope is inlaidly arranged in recess, pull rope one end is extended and is provided with pull ear.The utility model is cooperated by corrugated buffer layer and sheath assembly, the corrugated buffer layer of rubber material improves bending tolerance and anti-lateral pressure capacity, can also guide tear path, the "V" shape recess of sheath assembly is cooperated with pull rope to realize that sheath does not need tool and is quickly stripped, improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical cable technology, specifically a central loose tube optical cable. Background Technology

[0002] As an important carrier in the field of optical communication transmission, the central loose tube optical cable is widely used in short-distance communication, campus networks, monitoring cabling, and outdoor overhead and pipeline laying scenarios due to its compact structure, light weight, and low cost, so as to achieve stable transmission of optical signals and basic protection.

[0003] The plastic sheath of existing optical cables has a fixed thickness. When cutting the plastic sheath with scissors or knives, it is difficult to control the force. If the force is too small, it is not easy to cut the plastic sheath. If the force is too large, it is easy to cut the optical fiber inside the cable, which is inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a central loose tube optical cable. Through the cooperation of a corrugated buffer layer and a sheath assembly, the rubber corrugated buffer layer improves bending resistance and lateral pressure resistance, and can also guide the tear path. The "V" shaped groove of the sheath assembly cooperates with the pull rope to realize quick sheath peeling without tools, thereby improving construction efficiency.

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

[0006] This utility model is a central loose tube optical cable, including an optical fiber, an outer sheath of fiber grease, a central loose tube sleeved on the outer wall of the fiber grease, a reinforcing sleeve outside the central loose tube, a sheath assembly outside the reinforcing sleeve, a corrugated buffer layer fixedly connected to the inner wall of the sheath assembly, the sheath assembly including a sheath body, a groove on the outer wall of the sheath body, a pull rope embedded in the groove, and a pull lug extending from one end of the pull rope.

[0007] Furthermore, the fiber paste is located between the optical fiber and the central loose tube, with the optical fiber arranged in a ring shape inside the central loose tube.

[0008] Furthermore, the reinforcing sleeve is arranged in an interlaced spiral mesh around the outside of the central bundle tube, and the reinforcing sleeve is located between the central bundle tube and the corrugated buffer layer.

[0009] Furthermore, the corrugated buffer layer is arranged in a spiral corrugated shape, and the corrugated buffer layer is distributed around the inner side of the sheath body along the axial direction of the sheath assembly.

[0010] Furthermore, the opening section of the groove is set in a "V" shape, and the pull rope side is set against the side wall of the groove.

[0011] This utility model has the following beneficial effects:

[0012] This invention combines a corrugated buffer layer and a sheath assembly. The corrugated buffer layer, made of rubber, enhances bending resistance and lateral pressure resistance, and also guides the tearing path. The "V"-shaped groove of the sheath assembly, in conjunction with the pull rope, enables quick peeling of the sheath without tools, thus improving construction efficiency.

[0013] 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

[0014] Figure 1 A schematic diagram of the structure of a centrally bundled optical cable;

[0015] Figure 2 A schematic diagram of the internal structure of a centrally bundled optical cable;

[0016] Figure 3 This is a schematic diagram of the exploded structure of a centrally located optical fiber cable.

[0017] Figure 4 This is a schematic diagram of the corrugated buffer layer and sheath assembly.

[0018] In the diagram: 1. Optical fiber; 2. Fiber enamel; 3. Central bundle tube; 4. Reinforcing sleeve; 5. Corrugated buffer layer; 6. Sheath assembly; 601. Sheath body; 602. Groove; 603. Pull cord; 604. Pull lug. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a central loose tube optical cable, including an optical fiber 1, the optical fiber 1 is covered with fiber grease 2, the fiber grease 2 can buffer the friction and vibration between the optical fibers 1 and isolate moisture, the fiber grease 2 is located between the optical fiber 1 and the central loose tube 3, the fiber grease 2 fills the gap between the two, the optical fiber 1 is distributed in a ring shape inside the central loose tube 3, the ring distribution method improves the internal space utilization of the central loose tube 3, increases the capacity of the optical fiber 1, realizes the stable arrangement of multi-core optical fibers 1 in the loose tube space, and reduces the transmission loss of optical fiber 1 caused by compression and moisture.

[0021] The outer wall of the fiber optic cable 2 is fitted with a central loose tube 3, and a reinforcing sleeve 4 is provided outside the central loose tube 3. The reinforcing sleeve 4 is arranged in an interlaced spiral mesh around the outside of the central loose tube 3. The mesh structure disperses the axial tensile force and lateral pressure, enhances the overall structural strength of the optical cable, and maintains a certain degree of flexibility. The reinforcing sleeve 4 is located between the central loose tube 3 and the corrugated buffer layer 5, which improves the tensile and torsional resistance of the optical cable, prevents the central loose tube 3 and the internal optical fiber 1 from being damaged by external forces, and is suitable for construction scenarios such as aerial and traction.

[0022] The reinforcing sleeve 4 is covered with a sheath assembly 6. A corrugated buffer layer 5 is fixedly connected to the inner wall of the sheath assembly 6. The corrugated buffer layer 5 is made of rubber to enhance the bending resistance of the optical cable and prevent fiber 1 loss due to bending during construction. The corrugated buffer layer 5 is set in a spiral corrugated shape to disperse lateral impact force through the spiral corrugated structure and guide the tearing path of the sheath assembly 6. The corrugated buffer layer 5 is distributed around the inner side of the sheath body 601 along the axial direction of the sheath assembly 6 to enhance the optical cable's resistance to lateral pressure, protect the internal reinforcing sleeve 4 and central loose tube 3, and cooperate with the subsequent tearing operation to ensure that the path is neat when the sheath is peeled off, avoiding deviation and damage to the internal structure.

[0023] The sheath assembly 6 includes a sheath body 601, with a groove 602 on the outer wall of the sheath body 601. A pull rope 603 is fitted into the groove 602, and a pull lug 604 extends from one end of the pull rope 603. The opening cross-section of the groove 602 is V-shaped. One side of the pull rope 603 is set against the side wall of the groove 602. The pull lug 604 facilitates gripping. The function is to use the force-concentrating effect of the V-shaped groove to concentrate the tearing of the sheath body 601 when the pull rope 603 is under force, so as to achieve rapid peeling of the sheath and improve construction efficiency. It is especially suitable for field emergency repair scenarios. Moreover, the contact structure between the pull rope 603 and the groove 602 ensures that the tearing process is stable and controllable.

[0024] When it is necessary to peel off the sheath, hold the pull lug 604 and pull the pull cord 603. Because the groove 602 is "V" shaped, the pulling force is concentrated in the groove, causing the sheath body 601 to tear along the direction of the pull cord 603. At the same time, the spiral corrugation of the corrugated buffer layer 5 guides the tearing path to remain regular, avoiding deviation from the internal reinforcing sleeve 4 and central bundle tube 3, so as to achieve quick and stable peeling of the sheath without tools, which is convenient for subsequent operations.

[0025] 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. A centrally located loose tube optical cable, comprising an optical fiber (1), characterized in that: The optical fiber (1) is covered with fiber grease (2), the outer wall of the fiber grease (2) is fitted with a central loose tube (3), the outer wall of the central loose tube (3) is fitted with a reinforcing sleeve (4), the outer wall of the reinforcing sleeve (4) is fitted with a sheath assembly (6), the inner wall of the sheath assembly (6) is fixedly connected with a corrugated buffer layer (5), the sheath assembly (6) includes a sheath body (601), the outer wall of the sheath body (601) is provided with a groove (602), a pull rope (603) is embedded in the groove (602), and a pull lug (604) extends from one end of the pull rope (603).

2. The central loose tube optical cable according to claim 1, characterized in that, The fiber paste (2) is located between the optical fiber (1) and the central bundle tube (3), and the optical fiber (1) is distributed in a ring shape inside the central bundle tube (3).

3. A central loose tube optical cable according to claim 2, characterized in that, The reinforcing sleeve (4) is arranged in an interlaced spiral mesh around the outside of the central bundle tube (3), and the reinforcing sleeve (4) is located between the central bundle tube (3) and the corrugated buffer layer (5).

4. A central loose tube optical cable according to claim 1, characterized in that, The corrugated buffer layer (5) is arranged in a spiral corrugated shape, and the corrugated buffer layer (5) is distributed around the inner side of the sheath body (601) along the axial direction of the sheath assembly (6).

5. A central loose tube optical cable according to claim 4, characterized in that, The groove (602) has a "V" shaped opening section, and the pull rope (603) is positioned on one side against the side wall of the groove (602).

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