Insulated anti-extrusion optical fiber cable

Abstract

The utility model belongs to the technical field of optical fiber cables, and discloses an insulated anti-extrusion optical fiber cable, which comprises a plurality of optical fiber groups and a plurality of loose tubes sleeving the outer sides of the optical fiber groups, and is characterized in that the outer sides of the plurality of loose tubes are jointly sleeved with a plastic-coated aluminum tape; a neck bush and an outer skin protection layer are sequentially arranged on the outer side of the plastic-coated aluminum strip, a plurality of circular ring bodies are arranged on the outer side of the outer skin protection layer at equal intervals, balls protruding out of the outer surface of the circular ring body are embedded in each circular ring body, and the multiple balls are evenly distributed about the axis of the circular ring body. According to the invention, each circular ring body is provided with a plurality of balls, and when a worker pulls the optical fiber cable in the laying process, the balls are in contact with the ground, so that the sheath protection layer is not in contact and friction with the ground, the optical fiber cable is effectively protected, the friction damage of the sheath protection layer caused by laying of the optical fiber cable is reduced, and the service life of the optical fiber cable is prolonged. And the service life of the optical fiber cable is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber cables, in particular to an insulated, extrusion-resistant optical fiber cable. Background Art

[0002] Fiber optic cable is a type of communications cable that consists of two or more glass or plastic optical fiber cores enclosed in a protective sheath, covered by a plastic PVC outer casing. Fiber optic cable uses infrared light for signal transmission and is primarily used for high-speed data transmission over long distances.

[0003] Fiber optic cables consist of optical fibers, protected by a plastic sheath, and a plastic jacket. The optical fibers are typically as thin as a human hair, made of silica glass, and designed to prevent light leakage. The fiber optic cable's glass core is surrounded by a thin glass cladding and further insulated with a primary plastic coating that provides physical protection and prevents excessive bending. High-quality cables also include an additional layer of reinforcing fiber to further protect the cabling core.

[0004] Fiber optic cables in existing general technologies may need to be dragged during installation. However, friction is likely to occur between the cable sheath and the ground, which has a certain impact on the service life of the fiber optic cable. Therefore, it is necessary to improve the design of related technologies to reduce the probability of damage to the fiber optic cable during the dragging and laying process. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an insulated, extrusion-resistant optical fiber cable.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: an insulated anti-extrusion optical fiber cable, comprising an optical fiber group and a loose tube sleeved on the outer side of the optical fiber group, wherein the loose tube and the optical fiber group are provided in multiple groups, and the outer sides of the multiple groups of loose tubes are jointly sleeved with a plastic-coated aluminum strip, the outer sides of the plastic-coated aluminum strip are sequentially provided with an inner liner and an outer protective layer, and the outer side of the outer protective layer is provided with a plurality of annular bodies at equal intervals, each of the annular bodies is embedded with a ball protruding from the outer surface of the annular body, and the ball is provided in multiple groups and is evenly distributed about the axis of the annular body.

[0007] By adopting the above technical solution, multiple balls are set on each ring body. When the staff pulls the optical fiber cable during the laying process, the balls come into contact with the ground, so that the outer protective layer does not come into contact with and rub against the ground, effectively protecting the optical fiber cable and reducing the probability of friction damage to the outer protective layer due to laying the optical fiber cable, thereby shortening the service life of the optical fiber cable.

[0008] Furthermore, the annular body includes a first semicircular ring and a second semicircular ring hinged to one end of the first semicircular ring, and the end of the first semicircular ring away from the hinge axis of the second semicircular ring and the end of the second semicircular ring away from the hinge axis of the first semicircular ring are both integrally formed with a connecting block, and a screw that is clearance-matched with both connecting blocks is provided through the top of the upper connecting block, and a threaded sleeve that is threadedly connected to the lower end of the screw is fixed to the bottom of the lower connecting block.

[0009] By adopting the above technical solution, the screw and the threaded sleeve are threadedly connected, which makes it easy for workers to detachably connect the first semicircular ring and the second semicircular ring so as to install the ring body and the ball on the outside of the optical fiber cable.

[0010] Furthermore, the first semicircular ring includes an inner semicircular ring fitted with the outer surface of the outer protective layer and an outer semicircular ring fitted with the outer surface of the inner semicircular ring. The structure of the second semicircular ring is the same as that of the first semicircular ring. The hinge shaft between the first semicircular ring and the second semicircular ring is used to connect the outer semicircular ring of the first semicircular ring with the outer semicircular ring of the second semicircular ring. The center of the ball is located on the intersection surface between the inner semicircular ring and the outer semicircular ring. The inner semicircular ring is provided with a hemispherical groove for the ball to be installed, and the outer semicircular ring is provided with a through hole for the ball to pass through.

[0011] By adopting the above technical solution, it is convenient for workers to assemble the balls on the first semicircular ring or the second semicircular ring.

[0012] Furthermore, a strip groove is provided on the outside of the outer protective layer, the length direction of the strip groove is parallel to the length direction of the optical fiber cable, a limit strip is provided in the strip groove, the side of the limit strip away from the axis of the outer protective layer protrudes from the surface of the outer protective layer, and the outer side of the limit strip is provided with a card groove that is engaged with the inner semicircular ring.

[0013] By adopting the above technical solution, the limit strip is set in the strip groove and clamped (or fixed). The clamping groove on the limit strip has a good limiting effect on the inner semicircular ring, limiting the position of the inner semicircular ring in the length direction of the optical fiber cable, and enhancing the stability of the first semicircular ring, the second semicircular ring and the ball during use.

[0014] Furthermore, the loose tubes are provided with three groups, and a Y-shaped separator is provided in the plastic-coated aluminum strip for separating the three groups of loose tubes. The side of the Y-shaped separator away from the center of the loose tube abuts against the inner surface of the plastic-coated aluminum strip.

[0015] By adopting the above technical solution, the Y-shaped separator is set to separate multiple groups of loose tubes. The side of the Y-shaped separator away from the center of the loose tube abuts against the inner surface of the plastic-coated aluminum tape, which enhances the compressive resistance of the optical fiber cable to a certain extent.

[0016] Furthermore, an extension portion that fits with the inner surface of the plastic-coated aluminum strip is integrally formed on a side of the Y-shaped separator away from the center of the loose tube.

[0017] Furthermore, an outer filling layer is provided between the Y-shaped separator, the extension portion, the plastic-coated aluminum strip and the loose tube.

[0018] By adopting the above technical solution, with the cooperation of the outer filling layer, the setting of the extension part increases the contact area between the Y-shaped partition and the inner wall of the loose tube, further enhancing the pressure resistance of the optical fiber cable, which is conducive to extending the service life of the optical fiber cable.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. In this application, multiple balls are set on each ring body. When the staff pulls the optical fiber cable during the laying process, the balls come into contact with the ground, so that the outer protective layer does not contact and rub against the ground, effectively protecting the optical fiber cable and reducing the probability of friction damage to the outer protective layer caused by laying the optical fiber cable, thereby shortening the service life of the optical fiber cable;

[0021] 2. In this application, the screw and the threaded sleeve are threadedly connected, so that the staff can easily detachably connect the first semicircular ring and the second semicircular ring so as to install the ring body and the ball bearing on the outside of the optical fiber cable;

[0022] 3. In the present application, the limit strip is arranged in the strip groove and clamped (or fixed). The clamping groove on the limit strip has a good limiting effect on the inner semicircular ring, limiting the position of the inner semicircular ring in the length direction of the optical fiber cable, and enhancing the stability of the first semicircular ring, the second semicircular ring and the ball during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0025] Figure 3 This is a schematic structural diagram of an embodiment of the present invention for highlighting a circular ring;

[0026] Figure 4 yes Figure 3 A magnified schematic diagram of point B in the middle;

[0027] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle limit strip.

[0028] In the figure: 1. Optical fiber group; 2. Loose tube; 3. Plastic-coated aluminum tape; 4. Inner sleeve; 5. Outer protective layer; 51. Strip groove; 6. Ring body; 61. First semicircular ring; 611. Inner semicircular ring; 6111. Hemispherical groove; 612. Outer semicircular ring; 6121. Perforation; 62. Second semicircular ring; 7. Ball; 8. Connecting block; 81. Screw; 82. Threaded sleeve; 9. Limiting strip; 91. Slot; 10. Y-shaped separator; 11. Extension part; 12. Outer filling layer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] like Figure 1-5 As shown, the embodiment of the present application discloses an insulated, extrusion-resistant optical fiber cable, comprising an optical fiber group 1 and a loose tube 2 sleeved on the outside of the optical fiber group 1 (an inner filling layer is provided between the optical fiber group 1 in the loose tube 2, and the inner filling layer is not shown in the figure), the loose tube 2 and the optical fiber group 1 are provided in multiple groups, and the outer sides of the multiple groups of loose tubes 2 are commonly sleeved with a plastic-coated aluminum tape 3, the outer sides of the plastic-coated aluminum tape 3 are sequentially provided with an inner lining 4 and an outer protective layer 5, and the outer sides of the outer protective layer 5 are provided with a plurality of circular bodies 6 at equal intervals, each of the circular bodies 6 is embedded with a ball 7 protruding from the outer surface of the circular body 6, and the ball 7 is provided in multiple groups and evenly distributed about the axis of the circular body 6.

[0031] A plurality of balls 7 are provided on each annular body 6. When the worker pulls the optical fiber cable during the laying process, the balls 7 come into contact with the ground, so that the outer protective layer 5 does not come into contact with and rub against the ground, thereby effectively protecting the optical fiber cable and reducing the probability of friction damage to the outer protective layer 5 due to the laying of the optical fiber cable, thereby shortening the service life of the optical fiber cable.

[0032] The annular body 6 includes a first semicircular ring 61 and a second semicircular ring 62 hinged to one end of the first semicircular ring 61. The end of the first semicircular ring 61 away from the hinge axis of the second semicircular ring 62 and the end of the second semicircular ring 62 away from the hinge axis of the first semicircular ring 61 are both integrally formed with a connecting block 8. A screw 81 that is clearance-matched with both connecting blocks 8 is provided through the top of the upper connecting block 8, and a threaded sleeve 82 that is threadedly connected to the lower end of the screw 81 is fixed to the bottom of the lower connecting block 8.

[0033] The screw 81 and the threaded sleeve 82 are threadedly connected to facilitate the staff to detachably connect the first semicircular ring 61 and the second semicircular ring 62 so as to install the annular body 6 and the ball 7 on the outside of the optical fiber cable.

[0034] To facilitate the staff in assembling the ball 7 on the first semicircular ring 61 or the second semicircular ring 62, the first semicircular ring 61 includes an inner semicircular ring 611 that is bonded to the outer surface of the outer protective layer 5 and an outer semicircular ring 612 that is bonded to the outer surface of the inner semicircular ring 611. The structure of the second semicircular ring 62 is the same as that of the first semicircular ring 61. The hinge shaft between the first semicircular ring 61 and the second semicircular ring 62 is used to connect the outer semicircular ring 612 of the first semicircular ring 61 and the outer semicircular ring 612 of the second semicircular ring 62. The center of the ball 7 is located on the intersection surface between the inner semicircular ring 611 and the outer semicircular ring 612. The inner semicircular ring 611 is provided with a hemispherical groove 6111 for installing the ball 7, and the outer semicircular ring 612 is provided with a through hole 6121 for the ball 7 to pass through.

[0035] A strip groove 51 is provided on the outside of the outer protective layer 5, and the length direction of the strip groove 51 is parallel to the length direction of the optical fiber cable. A limit strip 9 is provided in the strip groove 51, and the side of the limit strip 9 away from the axis of the outer protective layer 5 protrudes from the surface of the outer protective layer 5, and the outer side of the limit strip 9 is provided with a card groove 91 that is engaged with the inner semicircular ring 611.

[0036] The limiting strip 9 is arranged in the strip groove 51 and clamped (or fixed). The clamping groove 91 on the limiting strip 9 plays a good limiting role on the inner semicircular ring 611, limiting the position of the inner semicircular ring 611 in the length direction of the optical fiber cable, and enhancing the stability of the first semicircular ring 61, the second semicircular ring 62 and the ball 7 during use.

[0037] Three groups of loose tubes 2 are provided, and a Y-shaped separator 10 is disposed within the plastic-coated aluminum strip 3 to separate the three groups of loose tubes 2. The side of the Y-shaped separator 10 away from the center of the loose tube 2 abuts the inner surface of the plastic-coated aluminum strip 3. The provision of the Y-shaped separator 10 separates the multiple groups of loose tubes 2, and the side of the Y-shaped separator 10 away from the center of the loose tube 2 abuts the inner surface of the plastic-coated aluminum strip 3, thereby enhancing the compressive strength of the optical fiber cable to a certain extent.

[0038] The Y-shaped separator 10 is integrally formed with an extension portion 11 on one side away from the center of the loose tube 2, which is in contact with the inner surface of the plastic-coated aluminum strip 3. An outer filling layer 12 is provided between the Y-shaped separator 10, the extension portion 11, the plastic-coated aluminum strip 3 and the loose tube 2.

[0039] With the cooperation of the outer filling layer 12, the setting of the expansion part 11 increases the contact area between the Y-shaped partition 10 and the inner wall of the loose tube 2, further enhancing the compressive resistance of the optical fiber cable, which is conducive to extending the service life of the optical fiber cable.

[0040] The operating principle of an insulated, extrusion-resistant optical fiber cable in this embodiment is as follows: a plurality of balls 7 are provided on each annular body 6. When the worker pulls the optical fiber cable during the laying process, the balls 7 come into contact with the ground, so that the outer protective layer 5 does not come into contact with and rub against the ground, thereby effectively protecting the optical fiber cable and reducing the probability of friction damage to the outer protective layer 5 due to the laying of the optical fiber cable, thereby shortening the service life of the optical fiber cable.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An insulated, extrusion-resistant optical fiber cable comprising an optical fiber group (1) and a loose tube (2) sleeved on the outer side of the optical fiber group (1), wherein the loose tube (2) and the optical fiber group (1) are provided in multiple groups, and the outer sides of the multiple groups of loose tubes (2) are collectively sleeved with a plastic-coated aluminum strip (3), and the outer sides of the plastic-coated aluminum strip (3) are sequentially provided with an inner lining (4) and an outer protective layer (5), wherein: A plurality of annular bodies (6) are arranged at equal intervals outside the outer skin protective layer (5), and each of the annular bodies (6) is embedded with a ball (7) protruding from the outer surface of the annular body (6). The ball (7) is provided in plurality and is evenly distributed about the axis of the annular body (6).

2. The insulated, extrusion-resistant optical fiber cable according to claim 1, characterized in that: The annular body (6) comprises a first semicircular ring (61) and a second semicircular ring (62) hinged to one end of the first semicircular ring (61), one end of the first semicircular ring (61) away from the hinge axis of the second semicircular ring (62) and one end of the second semicircular ring (62) away from the hinge axis of the first semicircular ring (61) are both integrally formed with a connecting block (8), a screw (81) that is clearance-matched with both connecting blocks (8) is provided through the top of the upper connecting block (8), and a threaded sleeve (82) that is threadedly connected to the lower end of the screw (81) is fixed to the bottom of the lower connecting block (8).

3. The insulated, crush-resistant optical fiber cable according to claim 2, characterized in that: The first semicircular ring (61) comprises an inner semicircular ring (611) fitted with the outer surface of the outer protective layer (5) and an outer semicircular ring (612) fitted with the outer surface of the inner semicircular ring (611). The structure of the second semicircular ring (62) is the same as that of the first semicircular ring (61). The hinge shaft between the first semicircular ring (61) and the second semicircular ring (62) is used to connect the outer semicircular ring (612) of the first semicircular ring (61) with the outer semicircular ring (612) of the second semicircular ring (62). The center of the ball (7) is located on the intersection surface between the inner semicircular ring (611) and the outer semicircular ring (612). The inner semicircular ring (611) is provided with a hemispherical groove (6111) for installing the ball (7), and the outer semicircular ring (612) is provided with a through hole (6121) for the ball (7) to pass through.

4. The insulated, crush-resistant optical fiber cable according to claim 3, characterized in that: A strip groove (51) is provided on the outside of the outer protective layer (5), the length direction of the strip groove (51) is parallel to the length direction of the optical fiber cable, a limit strip (9) is provided in the strip groove (51), the side of the limit strip (9) away from the axis of the outer protective layer (5) protrudes from the surface of the outer protective layer (5), and a card slot (91) that is engaged with the inner semicircular ring (611) is sleeved on the outside of the limit strip (9).

5. The insulated, crush-resistant optical fiber cable according to claim 4, characterized in that: The loose tubes (2) are provided with three groups, and a Y-shaped separator (10) for separating the three groups of loose tubes (2) is provided in the plastic-coated aluminum strip (3), and the side of the Y-shaped separator (10) away from the center of the loose tube (2) abuts against the inner surface of the plastic-coated aluminum strip (3).

6. The insulated, crush-resistant optical fiber cable according to claim 5, characterized in that: An extension portion (11) is integrally formed on one side of the Y-shaped separator (10) away from the center of the loose tube (2) and is in contact with the inner surface of the plastic-coated aluminum strip (3).

7. The insulated, crush-resistant optical fiber cable according to claim 6, characterized in that: An outer filling layer (12) is provided between the Y-shaped separator (10), the expansion portion (11), the plastic-coated aluminum strip (3) and the loose tube (2).

Images