Optical fiber ribbon optical cable with external reinforcing member

Abstract

The utility model belongs to the technical field of optical cables, and discloses an optical fiber ribbon optical cable with an outer reinforcing member, which is provided with an outer protective layer and a cable core, the outer protective layer is extruded outside the cable core, the cable core is composed of a cable core main body with a circular cross section, and a plurality of first placing grooves with outward openings are arranged on the cable core main body at intervals around the center of the cable core main body. At least one loose tube is clamped in each first placing groove, an outer reinforcing piece is arranged on each loose tube, and at least one optical fiber ribbon is arranged on each loose tube; the optical cable has the beneficial effects of high mechanical strength of the loose tube, better protection on the optical fiber ribbon, more stable structure, higher fiber core density and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of optical cable, especially a kind of optical fiber ribbon cable with outer reinforcing member. BACKGROUND

[0002] With the continuous growth of broadband, high-speed access demand, user's demand to optical fiber ribbon cable is higher and higher, and there are dozens of optical fibers in each loose tube of optical fiber ribbon cable, therefore, the reinforcement and protection of loose tube have important role.

[0003] In the prior art, CN114545578A discloses a voltage-resistant rat-proof optical cable, which has an outer protective layer, a central reinforcing member and at least three loose tubes. The loose tube is composed of a loose tube body and a support component located on both sides of the loose tube body and upward. At least one optical communication component is arranged in the loose tube body. The bottom edge of the loose tube body is attached to the central reinforcing member. The outer protective layer is composed of an outer protective layer body. Multiple V-shaped expansion slots are formed at the outer edge of the outer protective layer body. A clamping groove is formed on the outer edge of the outer protective layer body between two adjacent expansion slots. Each clamping groove clamps a rat-proof component. A buffer layer and an armor layer are arranged between the loose tube and the outer protective layer. The upper end of the support component is in contact with the inner wall of the armor layer.

[0004] The above-mentioned prior art has the following shortcomings: 1. The central reinforcing member can only accommodate one layer of loose tube, which makes the core density of the optical cable not high; 2. The loose tube has no reinforcement of the reinforcing member, and the tensile strength is poor; 3. The stability of the internal structure of the optical cable is weak. UTILITY MODEL CONTENT

[0005] To solve the above problems, the utility model aims to disclose an optical fiber ribbon cable with an outer reinforcing member, which is realized by the following technical scheme.

[0006] An optical fiber ribbon cable with an outer reinforcing member has an outer protective layer, a tape layer and a cable core. The tape layer is wrapped around the cable core. The outer protective layer is extruded outside the tape layer. The cable core is composed of a cable core body with a circular cross-section. A plurality of first placement slots with outward opening are arranged around the center of the cable core body. At least one loose tube is clamped in each first placement slot. The loose tube is provided with an outer reinforcing member. The loose tube is provided with at least one optical fiber ribbon.

[0007] The above-mentioned optical fiber ribbon cable with an outer reinforcing member has at least one pair of first limiting grooves arranged between the two side walls of the first placement slot. The loose tube is clamped with a corresponding pair of first limiting grooves.

[0008] The optical fiber ribbon cable with outer reinforcing members has a second placement slot between two first placement slots, at least one pair of second limiting slots is arranged between the side walls of the second placement slot, and at least one loose tube is arranged in each second placement slot.

[0009] The optical fiber ribbon cable with outer reinforcing members has a loose tube composed of a loose tube body, and a limiting block is arranged on the left side and the right side of the loose tube body above the center of the loose tube body.

[0010] The optical fiber ribbon cable with outer reinforcing members has an inner sleeve layer arranged on the upper side and the lower side of the inner cavity of the loose tube body, a fiber ribbon cavity is formed between the two inner sleeve layers, at least one fiber ribbon is arranged in the fiber ribbon cavity, and an elastic cavity is formed between the inner sleeve layer and the corresponding side of the loose tube body.

[0011] The optical fiber ribbon cable with outer reinforcing members has a height of the loose tube in the first placement slot being smaller than the depth of the first placement slot and greater than the distance between two adjacent pairs of first limiting slots.

[0012] The optical fiber ribbon cable with outer reinforcing members has a height of the loose tube in the second placement slot being smaller than the depth of the second placement slot and greater than the distance between two adjacent pairs of second limiting slots.

[0013] The optical fiber ribbon cable with outer reinforcing members has the first placement slot bottom being in extrusion contact with the adjacent loose tube body.

[0014] The optical fiber ribbon cable with outer reinforcing members has the first placement slot having a plurality of loose tubes, and the adjacent two loose tubes are in extrusion contact.

[0015] The optical fiber ribbon cable with outer reinforcing members has the second placement slot bottom being in extrusion contact with the adjacent loose tube body.

[0016] The optical fiber ribbon cable with outer reinforcing members has the second placement slot having a plurality of loose tubes, and the adjacent two loose tubes are in extrusion contact.

[0017] The optical fiber ribbon cable with outer reinforcing members has the outermost loose tube of the first placement slot or the second placement slot being completely located in the corresponding first placement slot or second placement slot.

[0018] The optical fiber ribbon cable with outer reinforcing members has a center reinforcing member arranged in the center of the cable core body.

[0019] The optical fiber ribbon cable with outer reinforcing members has the material of the outer protective layer being polyethylene.

[0020] The optical fiber ribbon cable with outer reinforcing member has a water-blocking tape or a steel tape or an aluminum tape as the tape layer.

[0021] The optical fiber ribbon cable with outer reinforcing member has high-density polyethylene as the material of the cable core.

[0022] The optical fiber ribbon cable with outer reinforcing member has the loose tube body and the inner sleeve layer integrally formed.

[0023] The optical fiber ribbon cable with outer reinforcing member has polybutylene terephthalate or modified polypropylene as the material of the loose tube body and the inner sleeve layer.

[0024] The optical fiber ribbon cable with outer reinforcing member has the optical fiber ribbon formed by at least two optical fibers through a resin and a tape.

[0025] The optical fiber ribbon cable with outer reinforcing member has a phosphorized steel wire as the central reinforcing member.

[0026] The optical fiber ribbon cable with outer reinforcing member has a phosphorized steel wire as the outer reinforcing member.

[0027] The application has the following beneficial effects: 1. Two outer reinforcing members are directly arranged in the loose tube body, improving the mechanical strength of the loose tube.

[0028] 2. Adjacent two loose tubes are in contact with each other and are clamped and fixed with the cable core, so that the structure of the optical cable is more stable.

[0029] 3. The loose tube is located in the first placement groove or the second placement groove, and the cable core can protect the loose tube to prevent damage to the loose tube.

[0030] 4. The cable core has the first placement groove or the second placement groove, the depth of the first placement groove is greater than the depth of the second placement groove, the adjacent two first placement grooves can be closer, and the depth of the first placement groove is deeper relative to the second placement groove, so that the cable core can accommodate more loose tubes and thus more optical fiber ribbons.

[0031] 5. Two outer reinforcing members are directly arranged in the loose tube body, so that the outer reinforcing members can be conveniently fixed with equipment and conveniently connected.

[0032] 6. The upper and lower sides of the loose tube are provided with elastic cavities, so that the loose tube has better shock resistance, and the inner sleeve layer on the inner side of the loose tube can better protect the internal optical fiber ribbon.

[0033] 7. The outer reinforcing members in the loose tube are dispersedly distributed in the optical cable, so that the optical cable is more uniformly stressed when subjected to tension. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram of the cable core of the embodiment 1 of the utility model.

[0035] Figure 2 is the front view of the embodiment 1 of the utility model.

[0036] Figure 3 is a schematic diagram of the cable core of the embodiment 1 of the utility model.

[0037] Figure 4 is the front view of the cable core of the embodiment 1 of the utility model.

[0038] Figure 5 is a schematic diagram of the loose tube of the embodiment 1 of the utility model.

[0039] Figure 6 is the front view of the loose tube of the embodiment 1 of the utility model.

[0040] Figure 7 is a schematic diagram of the cable core of the embodiment 2 of the utility model.

[0041] Figure 8 is the front view of the cable core of the embodiment 2 of the utility model.

[0042] In the figure, 1. outer sheath, 2. wrapping layer, 3. cable core, 31. cable core main body, 32. first placement slot, 33. first limiting slot, 34. central reinforcing member, 35. second placement slot, 36. second limiting slot, 4. loose tube, 41. loose tube main body, 42. limiting block, 43. elastic cavity, 44. inner sleeve layer, 45. optical fiber ribbon cavity, 46. outer reinforcing member, 5. optical fiber ribbon. DETAILED DESCRIPTION

[0043] Embodiment 1: as Figures 1 to 6 An optical fiber ribbon cable with outer reinforcing member has outer sheath 1, wrapping layer 2 and cable core 3, wrapping layer 2 is coated on the outside of cable core 3, outer sheath 1 is extruded on the outside of wrapping layer 2, cable core 3 is composed of the cable core main body 31 with circular cross section, six first placement slots 32 with outward opening are arranged on the cable core main body 31 at the center of cable core main body 31, at least one pair of first limiting slots 33 are arranged at the interval and equidistance on the two side walls of first placement slot 32, and a central reinforcing member 34 is arranged at the center of cable core main body 31.

[0044] At least one loose tube 4 is arranged in each first placement slot 32. The height of the loose tube 4 is less than the depth of the first placement slot 32 and greater than the distance between two adjacent pairs of first limiting slots 33. The loose tube 4 is composed of a loose tube body 41. An inner sleeve layer 44 is arranged on the upper side and the lower side of the inner cavity of the loose tube body 41. An optical fiber ribbon accommodating cavity 45 is formed between the two inner sleeve layers 44. At least one optical fiber ribbon 5 is arranged in the optical fiber ribbon accommodating cavity 45. An elastic cavity 43 is formed between the inner sleeve layer 44 and the corresponding side of the loose tube body 41. A limiting block 42 is arranged on the left side and the right side of the loose tube body 41 above the center of the loose tube body 41. An outer strength member 46 is arranged in the limiting block 42.

[0045] Embodiment 2: as Figure 7 and Figure 8 , and referring to Figure 1 and Figure 2 , Figure 5 and Figure 6 , an optical fiber ribbon cable with an outer strength member, comprising an outer sheath 1, a wrapping layer 2 and a cable core 3. The wrapping layer 2 is wrapped on the cable core 3. The outer sheath 1 is extruded on the wrapping layer 2. The cable core 3 is composed of a cable core body 31 with a circular cross section. Six first placement slots 32 with open outward are arranged on the cable core body 31 at intervals around the center of the cable core body 31. At least one pair of first limiting slots 33 is arranged at intervals and equidistantly on the two side walls of the first placement slot 32. A second placement slot 35 is arranged between two adjacent first placement slots 32. At least one pair of second limiting slots 36 is arranged at intervals and equidistantly on the two side walls of the second placement slot 35. The depth of the first placement slot 32 is greater than the depth of the second placement slot 35. A central strength member 34 is arranged at the center of the cable core body 31.

[0046] At least one loose tube 4 is arranged in each first placement slot 32 and each second placement slot 35. The height of the loose tube 4 in the first placement slot 32 is less than the depth of the first placement slot 32 and greater than the distance between two adjacent pairs of first limiting slots 33. The height of the loose tube 4 in the second placement slot 35 is less than the depth of the second placement slot 35 and greater than the distance between two adjacent pairs of second limiting slots 36. The loose tube 4 is composed of a loose tube body 41. An inner sleeve layer 44 is arranged on the upper side and the lower side of the inner cavity of the loose tube body 41. An optical fiber ribbon accommodating cavity 45 is formed between the two inner sleeve layers 44. At least one optical fiber ribbon 5 is arranged in the optical fiber ribbon accommodating cavity 45. An elastic cavity 43 is formed between the inner sleeve layer 44 and the corresponding side of the loose tube body 41. A limiting block 42 is arranged on the left side and the right side of the loose tube body 41 above the center of the loose tube body 41. An outer strength member 46 is arranged in the limiting block 42.

[0047] The first placement slot 32 bottom is in extrusion contact with the adjacent loose tube body 41 in the above-mentioned optical fiber ribbon cable with an outer strength member.

[0048] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the first placement groove 32 has a plurality of the loose tubes 4, and adjacent two of the loose tubes 4 are in contact with each other.

[0049] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the second placement groove 35 has a bottom in contact with the main body 41 of the adjacent loose tube.

[0050] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the second placement groove 35 has a plurality of the loose tubes 4, and adjacent two of the loose tubes 4 are in contact with each other.

[0051] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the outermost loose tube 4 of the first placement groove 32 or the second placement groove 35 is completely located in the corresponding first placement groove 32 or the second placement groove 35.

[0052] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the material of the outer jacket 1 is polyethylene.

[0053] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the wrapping layer 2 is a water-blocking tape or a steel tape or an aluminum tape.

[0054] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the material of the cable core 3 is high-density polyethylene.

[0055] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the loose tube main body 41 and the inner sleeve layer 44 are integrally formed.

[0056] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the material of the loose tube main body 41 and the inner sleeve layer 44 is polybutylene terephthalate or modified polypropylene.

[0057] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the optical fiber ribbon 5 is formed by at least two optical fibers through a resin and a tape.

[0058] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the central strength member 34 is a phosphorized steel wire.

[0059] The optical fiber ribbon cable with outer strength members as in any preceding embodiment, wherein the outer strength member 46 is a phosphorized steel wire.

[0060] The application can be used as an intelligent sensor and an intelligent sensing element; as voice and image can be transmitted, the application can also be used as a physical sensor such as a voice sensor and an image sensor; as the light signal is transmitted through the total reflection principle, the application can also be used as a distance sensor; the optical fiber in the application is an optical waveguide, so the application can be used as an optical waveguide such as an array optical waveguide and a diffraction optical waveguide; the application can also be used in the field of optical calculation, as optical calculation, optical network calculation, and as part of optical chip calculation.

[0061] The application has the following beneficial effects: 1. Two outer reinforcing members 46 are directly arranged in the loose tube body 41, so that the mechanical strength of the loose tube 4 is improved.

[0062] 2. Adjacent two loose tubes 4 are in extrusion contact with each other and are clamped and fixed with the cable core 3, so that the structure of the optical cable is more stable.

[0063] 3. The loose tube 4 is located in the first placing groove 32 or the second placing groove 35, and the cable core 3 can protect the loose tube 4 to prevent the loose tube 4 from being damaged.

[0064] 4. The cable core 3 has the first placing groove 32 or the second placing groove 35, the depth of the first placing groove 32 is greater than that of the second placing groove 35, so that adjacent two first placing grooves 32 can be closer, and the depth of the first placing groove 32 is greater relative to the second placing groove 35, so that the cable core 3 can accommodate more loose tubes 4, thereby being capable of accommodating more optical fiber ribbons.

[0065] 5. Two outer reinforcing members 46 are directly arranged in the loose tube body 41, so that the outer reinforcing members 46 can be conveniently fixed with equipment and conveniently connected.

[0066] 6. The upper and lower sides of the loose tube 4 are provided with elastic cavities 43, so that the loose tube 4 has better anti-vibration effect, and the inner sleeve layer 44 on the inner side of the loose tube 4 can better protect the internal optical fiber ribbon.

[0067] 7. The outer reinforcing members 46 in the loose tube 4 are dispersedly distributed in the optical cable, so that the optical cable is more uniformly stressed when subjected to tension.

[0068] The above-mentioned embodiments are only preferred technical solutions of the application, and should not be regarded as limiting the application. The protection scope of the application should be based on the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features recorded in the claims. That is, equivalent replacement improvements within the scope are also within the protection scope of the application.

Claims

1. A fiber optic ribbon cable with outer strength members, having an outer jacket (1), a wrapping layer (2) and a cable core (3), the wrapping layer (2) being wrapped around the cable core (3), characterized in that: The outer protective layer (1) is extruded outside the wrapping layer (2), the cable core (3) is composed of a cable core body (31) with a circular cross section, a plurality of first placement slots (32) with outward opening are arranged on the cable core body (31) at intervals around the center of the cable core body (31), at least one loose tube (4) is clamped in each first placement slot (32), the loose tube (4) is provided with an outer reinforcing member (46), the loose tube (4) is provided with at least one optical fiber ribbon (5), and the center of the cable core body (31) is provided with a central reinforcing member (34).

2. A fiber optic ribbon cable having outer strength members as recited in claim 1, wherein: At least one pair of first limiting grooves (33) is arranged at intervals between the two side walls of the first placement slot (32), and the loose tube (4) is clamped with a corresponding pair of first limiting grooves (33).

3. A fiber optic ribbon cable having outer strength members as recited in claim 2, wherein: A second placement slot (35) is arranged between the two adjacent first placement slots (32), at least one pair of second limiting grooves (36) is arranged at intervals between the two side walls of the second placement slot (35), at least one loose tube (4) is arranged in each second placement slot (35), and the loose tube (4) is clamped with a corresponding pair of second limiting grooves (36).

4. A fiber optic ribbon cable having outer strength members as claimed in Claim 3 wherein: The loose tube (4) is composed of a loose tube body (41), and a limiting block (42) is arranged on the left side and the right side of the loose tube body (41) above the center of the loose tube body (41), and an outer reinforcing member (46) is arranged in the limiting block (42).

5. A fiber optic ribbon cable having outer strength members as recited in claim 4, wherein: An inner sleeve layer (44) is arranged on the upper side and the lower side of the inner cavity of the loose tube body (41), an optical fiber ribbon cavity (45) is formed between the two inner sleeve layers (44), at least one optical fiber ribbon (5) is arranged in the optical fiber ribbon cavity (45), and an elastic cavity (43) is formed between the inner sleeve layer (44) and the corresponding side of the loose tube body (41).

6. A fiber optic ribbon cable having outer strength members as claimed in Claim 5 wherein: The height of the loose tube (4) in the first placement slot (32) is less than the depth of the first placement slot (32) and greater than the distance between the two adjacent pairs of first limiting grooves (33).

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