Tensile bending-resistant optical cable structure

Abstract

The utility model discloses a tensile bending-resistant optical cable structure which comprises optical fibers and further comprises a framework, four support arms are arranged on the outer side of the framework along the circumference, each support arm is correspondingly provided with a clamping groove, the optical fibers are installed in the clamping grooves in a one-to-one correspondence mode, an axial penetrating reinforcing core is arranged in the middle of the framework, the reinforcing core is made of aramid fiber materials, and the reinforcing core is made of an optical fiber material. The framework is made of a high-density polyethylene material, the framework and the reinforcing core are connected together through extrusion molding, an elastic layer for wrapping is arranged on the outer side of the framework, an armor layer is formed outside the elastic layer by spirally winding a plastic-coated aluminum strip, an outer sheath is arranged outside the armor layer, and a buffer groove is formed between every two adjacent supporting arms. The elastic layer is made of a polyurethane rubber material, the inner side of the elastic layer is provided with protruding parts, the protruding parts are inserted into the buffer grooves in a one-to-one correspondence manner, the middle part is provided with the reinforcing core, the outer part is provided with the armor layer, the tensile strength of the optical cable is greatly improved, the bending flexibility is ensured, and the matching design of the skeleton and the elastic layer provides good compression-resistant buffer and protects the optical cable.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cables, in particular to a tension-resistant and bending-resistant optical cable structure. Background Art

[0002] Optical cables are manufactured to meet optical, mechanical, and environmental performance specifications. They utilize one or more optical fibers enclosed in a sheath as the transmission medium and can be used individually or in groups. Optical cables primarily consist of optical fibers (hair-thin glass filaments) protected by a plastic sheath and outer sheath. Optical cables consist of a number of optical fibers arranged in a specific pattern, then covered with a sheath or outer sheath to transmit optical signals. Ships are confined to smaller spaces and often experience strong winds and waves. Therefore, optical cables used onboard require excellent bending resistance, tensile strength, and flexibility. Existing optical cables struggle to meet these requirements. Utility Model Content

[0003] The purpose of the present utility model is to provide a tensile and bending-resistant optical cable structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tensile and bending-resistant optical cable structure, comprising an optical fiber and a skeleton, wherein four arms are provided along the circumference of the outer side of the skeleton, and each arm is provided with a corresponding card slot, and the optical fibers are loaded into the card slots one by one, and an axially penetrating reinforcing core is provided in the middle of the skeleton, the reinforcing core is made of aramid fiber, and the skeleton is made of high-density polyethylene. The skeleton and the reinforcing core are connected together by extrusion molding, and an elastic layer is provided on the outer side of the skeleton to form a package, and the outside of the elastic layer is spirally wound with plastic-coated aluminum tape to form an armor layer, and an outer sheath is provided on the outside of the armor layer, and a buffer groove is formed between two adjacent arms, and the elastic layer is made of polyurethane rubber material and a protrusion is provided on the inner side, and the protrusions are inserted into the buffer groove one by one.

[0005] Preferably, the outer sheath is made of low-smoke halogen-free flame-retardant polyolefin material.

[0006] Preferably, the skeleton and the elastic layer are extruded at one time using a co-extrusion die.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a reinforcing core in the middle and an armor layer on the outside, which greatly improves the tensile strength of the optical cable and ensures the bending flexibility. The coordinated design of the skeleton and the elastic layer provides good compressive buffering to protect the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0009] Figure 2 Schematic diagram of the three-dimensional structure of the skeleton.

[0010] In the figure: 1. Strengthening core; 2. Optical fiber; 3. Skeleton; 4. Elastic layer; 5. Armor layer; 6. Outer sheath; 7. Protrusion; 8. Slot. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0012] See also Figure 1-2 The utility model provides a technical solution: a tensile and bending-resistant optical cable structure, including an optical fiber 2 and a skeleton 3. Four arms are provided along the circumference of the outer side of the skeleton 3. Each arm is provided with a card slot 8. The optical fibers 2 are loaded into the card slots 8 one by one. An axially penetrating reinforcing core 1 is provided in the middle of the skeleton 3. The reinforcing core 1 is made of aramid fiber, and the skeleton 3 is made of high-density polyethylene. The skeleton 3 and the reinforcing core 1 are connected together by extrusion molding. The reinforcing core 1 made of aramid fiber has extremely high tensile strength and soft texture, thereby enhancing the tensile strength of the optical cable.

[0013] An elastic layer 4 is provided on the outside of the skeleton 3 to form a wrapping. The skeleton 3 and the elastic layer 4 are extruded at one time by a co-extrusion mold. The outside of the elastic layer 4 is spirally wrapped with a plastic-coated aluminum tape to form an armor layer 5. The outside of the armor layer 5 is provided with an outer sheath 6. The material of the outer sheath 6 is a low-smoke halogen-free flame-retardant polyolefin material. A buffer groove is formed between two adjacent arms. The elastic layer 4 is a polyurethane rubber material with a protrusion 7 on the inside. The protrusions 7 are inserted into the buffer groove one by one. The polyurethane rubber has good elasticity and tensile strength, and mainly provides buffering and pressure resistance for the optical cable. The skeleton 3 has good toughness, which provides good support for the optical fiber 2 while ensuring flexibility.

[0014] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tensile and bending-resistant optical cable structure, comprising an optical fiber (2), characterized in that: The invention also includes a skeleton (3), wherein four arms are provided along the circumference of the outer side of the skeleton (3), and each arm is provided with a corresponding card slot (8), and the optical fibers (2) are installed in the card slots (8) one by one. An axially penetrating reinforcing core (1) is provided in the middle of the skeleton (3), and the reinforcing core (1) is made of aramid fiber material, and the skeleton (3) is made of high-density polyethylene material. The skeleton (3) and the reinforcing core (1) are connected together by extrusion molding. An elastic layer (4) is provided on the outer side of the skeleton (3) to form a wrapping, and the outer side of the elastic layer (4) is spirally wound with plastic-coated aluminum tape to form an armor layer (5), and the outer side of the armor layer (5) is provided with an outer sheath (6). A buffer groove is formed between two adjacent arms, and the inner side of the elastic layer (4) is provided with a protrusion (7) of polyurethane rubber material, and the protrusion (7) is inserted into the buffer groove one by one.

2. The tensile and bending-resistant optical cable structure according to claim 1, characterized in that: The outer sheath (6) is made of low-smoke, halogen-free, flame-retardant polyolefin material.

3. The tensile and bending-resistant optical cable structure according to claim 1, characterized in that: The skeleton (3) and the elastic layer (4) are extruded and formed at one time using a co-extrusion die.

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