Optical fiber ribbon cable with variable optical fiber ribbon cavity

Abstract

The present invention belongs to the field of cables, and in particular relates to an optical fiber ribbon cable with a changeable optical fiber ribbon cavity. The optical fiber ribbon cable comprises an outer sheath and a central reinforcement member, wherein the outer sheath is extruded outside the central reinforcement member, and is characterized in that the central reinforcement member comprises a central reinforcement member body and protrusions spaced around the central reinforcement member body, a second groove is formed between two adjacent protrusions, and the top edges of all the protrusions are located on the same circumference; a plurality of peripheral reinforcement members are further provided between the outer sheath and the central reinforcement member, and the number of peripheral reinforcement members is the same as the number of protrusions; the peripheral reinforcement member comprises a peripheral reinforcement member body and a first extension member located at the top edges of both ends of the peripheral reinforcement member body, the first extension member and the side wall of the peripheral reinforcement member body form a first groove, and the central reinforcement member can rotate around an axis; the present invention has the advantages of simple structure, changeable size and number of optical fiber ribbon cavities, good pressure resistance, and convenient construction.

Description

Technical Field

[0001] The invention belongs to the field of cables, and in particular relates to an optical fiber ribbon cable with a changeable optical fiber ribbon cavity. Background Art

[0002] Fiber optic ribbon cables are widely used in intercity trunk lines and computer room access and outgoing connections due to their convenient splicing and large fiber capacity.

[0003] In the prior art, CN113325533A discloses a skeleton-type optical fiber ribbon cable, which includes a skeleton with a plurality of skeleton grooves uniformly opened in the circumference, a central reinforcement member is placed in the center of the skeleton, and optical fiber units are placed in each skeleton groove. On the outside of the skeleton, a water-blocking tape, a metal tape and an outer sheath are sequentially coated from the inside to the outside. The outer sheath is formed by a reinforcement layer and a sheath layer continuously and alternately arranged along the circumference. The reinforcement layer is located above the skeleton groove, and the left and right edges of the reinforcement layer are outside the edge of the skeleton groove body. The reinforcement layer material and the sheath layer material are made of different resin materials.

[0004] The above-mentioned prior art has the following drawbacks: the size of the skeleton grooves in the optical cable cannot be changed, and the number and size of the skeleton grooves cannot be adjusted. Summary of the Invention

[0005] To solve the above problems, the present invention aims to disclose an optical fiber ribbon cable with a variable optical fiber ribbon cavity, which is achieved by adopting the following technical solutions.

[0006] An optical fiber ribbon cable with a variable optical fiber ribbon cavity comprises an outer sheath and a central reinforcement member, wherein the outer sheath is extruded outside the central reinforcement member. The central reinforcement member is characterized in that the central reinforcement member comprises a central reinforcement member body and protrusions spaced around the central reinforcement member body, a second groove is formed between two adjacent protrusions, a reinforcing steel wire is provided in the central reinforcement member body, and the top edges of all the protrusions are located on the same circumference;

[0007] A plurality of peripheral reinforcements are further provided between the outer protective layer and the central reinforcement, the number of the peripheral reinforcements being the same as the number of the protrusions, the peripheral reinforcements being composed of a peripheral reinforcement body and first extension members located at the top edges of both ends of the peripheral reinforcement body, the first extension members and the sidewalls of the peripheral reinforcement body forming a first groove, the top edges of all the peripheral reinforcements being located on the same circumference, the bottom edges of all the peripheral reinforcements being located on the same circumference, and the curvature of the bottom edges of the peripheral reinforcements being greater than the curvature of the top of the second groove;

[0008] The central reinforcement member can rotate around the axis. When the central reinforcement member rotates until the bottom edge of the surrounding reinforcement member is located above the second groove, the second groove and the corresponding bottom edge of the surrounding reinforcement member form a second optical fiber ribbon cavity. The opposite first grooves of the two adjacent first extension members and the corresponding protrusions form a first optical fiber ribbon cavity. At least one optical fiber ribbon is provided in the first optical fiber ribbon cavity and the second optical fiber ribbon cavity.

[0009] When the central reinforcement member rotates so that the bottom edge of the surrounding reinforcement member is above the protrusion, the opposing first grooves and corresponding second grooves of two adjacent first extension members form a third optical fiber ribbon cavity, in which at least one optical fiber ribbon is disposed.

[0010] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that a second extension component is provided at each bottom edge of the two ends of the peripheral reinforcement body, and the distance between the ends of the two second extension components is smaller than the distance between the two vertices of the corresponding second groove.

[0011] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that a wrapping layer is provided between the peripheral reinforcement member and the outer sheath.

[0012] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that the outer sheath material is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin, or polyvinyl chloride.

[0013] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that the central reinforcement member is made of high-density polyethylene.

[0014] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that the reinforcing steel wire is made of stainless steel.

[0015] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that the optical fiber ribbon is formed by combining at least two optical fibers.

[0016] The optical fiber ribbon cable with a changeable optical fiber ribbon cavity is characterized in that the optical fiber model is G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b or A1c.

[0017] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that the surrounding reinforcement member is made of high-density polyethylene or modified polypropylene.

[0018] The optical fiber ribbon cable with a variable optical fiber ribbon cavity is characterized in that the material of the tape layer is a polyester tape, a water-blocking tape, a steel tape, or an aluminum tape.

[0019] The present invention has the following beneficial effects:

[0020] 1. By rotating the central reinforcement, the fiber ribbon cavity in the optical cable is divided into two small cavities to accommodate fiber ribbons of different sizes, quantities and models; or the central reinforcement is further rotated to make the two layers of fiber ribbon cavities correspond to each other, forming a large cavity, so that the capacity of a single cavity is larger.

[0021] 2. By providing the second extension component, the transverse width of the first optical fiber ribbon cavity is expanded, and an optical fiber ribbon consisting of more optical fibers can be placed, thereby increasing the capacity of the first optical fiber ribbon cavity and accommodating more optical fibers.

[0022] 3. By setting up the second extension component, after the optical cable is laid, when the central reinforcement is rotated to the first optical fiber ribbon cavity and the second optical fiber ribbon cavity is merged into the third optical fiber ribbon cavity, the optical fiber ribbon in the first optical fiber ribbon cavity will not fall into the second optical fiber ribbon cavity, so that the optical fiber ribbon will not be damaged during rotation.

[0023] 4. The setting of surrounding reinforcements improves the cable's ability to resist lateral pressure.

[0024] 5. Multiple peripheral reinforcements are designed as non-integral shapes. When you need to remove the optical fiber ribbon, you only need to remove the corresponding peripheral reinforcement to easily remove the optical fiber ribbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of Example 1 of the present invention.

[0026] Figure 2 This is a structural diagram of Example 2 of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the central reinforcement of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the peripheral reinforcement member of Example 1 or Example 2 of the present invention.

[0029] Figure 5 This is a structural diagram of Example 3 of the present invention.

[0030] Figure 6 This is a schematic structural diagram of the peripheral reinforcement member of Example 3 of the present invention.

[0031] In the figure: 1. outer sheath, 2. wrapping layer, 3. peripheral reinforcement, 31. peripheral reinforcement body, 32. first extension part, 33. first groove, 34. second extension part, 4. first optical fiber ribbon cavity, 5. central reinforcement, 51. central reinforcement body, 52. protrusion, 53. second groove, 54. reinforcing steel wire, 6. second optical fiber ribbon cavity, 7. optical fiber ribbon, 8. third optical fiber ribbon cavity. DETAILED DESCRIPTION

[0032] Example 1

[0033] Please see Figure 1 、 Figure 3 and Figure 4 A fiber optic ribbon cable with a variable fiber ribbon cavity comprises an outer sheath 1, a tape layer 2, and a central reinforcement member 5. The tape layer 2 is located outside the central reinforcement member 5, and the outer sheath 1 is extruded outside the tape layer 2. The central reinforcement member 5 is characterized in that the central reinforcement member 5 comprises a central reinforcement member body 51 and protrusions 52 spaced around the central reinforcement member body 51, a second groove 53 is formed between two adjacent protrusions 52, a reinforcing steel wire 54 is provided in the central reinforcement member body 51, and the top edges of all the protrusions 52 are located on the same circumference;

[0034] A plurality of peripheral reinforcements 3 are further provided between the tape layer 2 and the central reinforcement 5. The number of the peripheral reinforcements 3 is the same as the number of the protrusions 52. The peripheral reinforcement 3 is composed of a peripheral reinforcement body 31 and first extension components 32 located at the top edges of both ends of the peripheral reinforcement body 31. The first extension components 32 and the sidewalls of the peripheral reinforcement body 31 form a first groove 33. The top edges of all the peripheral reinforcements 3 are located on the same circumference, and the bottom edges of all the peripheral reinforcements 3 are located on the same circumference. The curvature of the bottom edges of the peripheral reinforcements 3 is greater than the curvature of the top of the second groove 53.

[0035] The bottom edge of the surrounding reinforcement member 3 is located above the second groove 53. The second groove 53 and the corresponding bottom edge of the surrounding reinforcement member 3 form a second optical fiber ribbon cavity 6. The opposite first grooves 33 of the two adjacent first extension parts 32 and the corresponding protrusions 52 form a first optical fiber ribbon cavity 4. At least one optical fiber ribbon 7 is provided in the first optical fiber ribbon cavity 4 and the second optical fiber ribbon cavity 6.

[0036] Example 2

[0037] Please see Figure 2 、 Figure 3 and Figure 4A fiber optic ribbon cable with a variable fiber ribbon cavity comprises an outer sheath 1, a tape layer 2, and a central reinforcement member 5. The tape layer 2 is located outside the central reinforcement member 5, and the outer sheath 1 is extruded outside the tape layer 2. The central reinforcement member 5 is characterized in that the central reinforcement member 5 comprises a central reinforcement member body 51 and protrusions 52 spaced around the central reinforcement member body 51, a second groove 53 is formed between two adjacent protrusions 52, a reinforcing steel wire 54 is provided in the central reinforcement member body 51, and the top edges of all the protrusions 52 are located on the same circumference;

[0038] A plurality of peripheral reinforcements 3 are further provided between the tape layer 2 and the central reinforcement 5. The number of the peripheral reinforcements 3 is the same as the number of the protrusions 52. The peripheral reinforcement 3 is composed of a peripheral reinforcement body 31 and first extension components 32 located at the top edges of both ends of the peripheral reinforcement body 31. The first extension components 32 and the sidewalls of the peripheral reinforcement body 31 form a first groove 33. The top edges of all the peripheral reinforcements 3 are located on the same circumference, and the bottom edges of all the peripheral reinforcements 3 are located on the same circumference. The curvature of the bottom edges of the peripheral reinforcements 3 is greater than the curvature of the top of the second groove 53.

[0039] The bottom edge of the peripheral reinforcement member 3 is located above the protrusion 52 , and the opposing first grooves 33 of two adjacent first extension members 32 and the corresponding second grooves 53 form a third optical fiber ribbon cavity 8 , in which at least one optical fiber ribbon 7 is disposed.

[0040] The structure described in this embodiment can increase the volume of a single optical fiber ribbon cavity and improve the fiber capacity of a single optical fiber ribbon cavity by rotating the central reinforcement member 5 in Example 1 so that the first optical fiber ribbon cavity 4 and the second optical fiber ribbon cavity 6 of Example 1 are merged into a third optical fiber ribbon cavity 8.

[0041] Example 3

[0042] Please see Figure 5 and Figure 6 A fiber optic ribbon cable with a variable fiber ribbon cavity comprises an outer sheath 1, a tape layer 2, and a central reinforcement member 5. The tape layer 2 is located outside the central reinforcement member 5, and the outer sheath 1 is extruded outside the tape layer 2. The central reinforcement member 5 is characterized in that the central reinforcement member 5 comprises a central reinforcement member body 51 and protrusions 52 spaced around the central reinforcement member body 51, a second groove 53 is formed between two adjacent protrusions 52, a reinforcing steel wire 54 is provided in the central reinforcement member body 51, and the top edges of all the protrusions 52 are located on the same circumference;

[0043] A plurality of peripheral reinforcement members 3 are further provided between the tape layer 2 and the central reinforcement member 5. The number of the peripheral reinforcement members 3 is the same as the number of the protrusions 52. The peripheral reinforcement member 3 is composed of a peripheral reinforcement member body 31 and first extension members 32 located at the top edges of both ends of the peripheral reinforcement member body 31. A second extension member 34 is further provided at the bottom edges of both ends of the peripheral reinforcement member body 31. The distance between the ends of the two second extension members 34 is less than the distance between the two vertices of the corresponding second groove 53.

[0044] The first extension part 32 and the side wall of the peripheral reinforcement body 31 form a first groove 33. The top edges of all peripheral reinforcements 3 are located on the same circumference, and the bottom edges of all peripheral reinforcements 3 are located on the same circumference. The curvature of the bottom edge of the peripheral reinforcement 3 is greater than the curvature of the top of the second groove 53.

[0045] The bottom edge of the peripheral reinforcement member 3 is located above the protrusion 52 , and the opposing first grooves 33 of two adjacent first extension members 32 and the corresponding second grooves 53 form a third optical fiber ribbon cavity 8 , in which at least one optical fiber ribbon 7 is disposed.

[0046] In this embodiment, two second extension components 34 are provided to expand the transverse width of the first optical fiber ribbon cavity 4, to accommodate an optical fiber ribbon consisting of more optical fibers, and to increase the capacity of the first optical fiber ribbon cavity 4 to accommodate more optical fibers.

[0047] The optical fiber ribbon cable with a variable optical fiber ribbon cavity as described in any of the above embodiments is characterized in that the outer sheath 1 is made of low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin, or polyvinyl chloride.

[0048] The optical fiber ribbon cable with a variable optical fiber ribbon cavity as described in any of the above embodiments is characterized in that the central reinforcement member 5 is made of high-density polyethylene.

[0049] The optical fiber ribbon cable with a variable optical fiber ribbon cavity described in any of the above embodiments is characterized in that the reinforcing steel wire 54 is made of stainless steel.

[0050] The optical fiber ribbon cable with a changeable optical fiber ribbon cavity as described in any of the above embodiments is characterized in that the optical fiber ribbon 7 is composed of at least two optical fibers, and the optical fiber model is G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b, or A1c.

[0051] The optical fiber ribbon cable with a variable optical fiber ribbon cavity as described in any of the above embodiments is characterized in that the material of the peripheral reinforcement member 3 is high-density polyethylene or modified polypropylene.

[0052] The optical fiber ribbon cable with a variable optical fiber ribbon cavity described in any of the above embodiments is characterized in that the material of the tape layer 2 is a polyester tape, a water-blocking tape, a steel tape, or an aluminum tape.

[0053] The present invention solves the problem in the prior art that the size of the optical fiber ribbon cavities in the optical cable cannot be changed, and the number and size of the optical fiber ribbon cavities cannot be adjusted.

[0054] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An optical fiber ribbon cable with a variable optical fiber ribbon cavity, comprising an outer sheath (1) and a central reinforcement member (5), wherein the outer sheath (1) is extruded outside the central reinforcement member (5), and is characterized in that The central reinforcement member (5) is composed of a central reinforcement member body (51) and protrusions (52) spaced apart around the central reinforcement member body (51), a second groove (53) is formed between two adjacent protrusions (52), a reinforcing steel wire (54) is provided in the central reinforcement member body (51), and the top edges of all the protrusions (52) are located on the same circumference; A plurality of peripheral reinforcements (3) are further provided between the outer protective layer (1) and the central reinforcement (5), the number of the peripheral reinforcements (3) being the same as the number of the protrusions (52), the peripheral reinforcements (3) being composed of a peripheral reinforcement body (31) and a first extension component (32) located at the top edges of both ends of the peripheral reinforcement body (31), the first extension component (32) and the side wall of the peripheral reinforcement body (31) forming a first groove (33), the top edges of all the peripheral reinforcements (3) being located on the same circumference, the bottom edges of all the peripheral reinforcements (3) being located on the same circumference, and the curvature of the bottom edge of the peripheral reinforcement (3) being greater than the curvature of the top of the second groove (53); The central reinforcement member (5) can rotate around the axis. When the central reinforcement member (5) rotates until the bottom edge of the surrounding reinforcement member (3) is located above the second groove (53), the second groove (53) and the bottom edge of the corresponding surrounding reinforcement member (3) form a second optical fiber ribbon cavity (6). The opposite first grooves (33) of the two adjacent first extension members (32) and the corresponding protrusions (52) form a first optical fiber ribbon cavity (4). At least one optical fiber ribbon (7) is provided in the first optical fiber ribbon cavity (4) and the second optical fiber ribbon cavity (6). When the central reinforcement member (5) is rotated until the bottom edge of the surrounding reinforcement member (3) is located above the protrusion (52), the opposite first grooves (33) of the two adjacent first extension members (32) and the corresponding second grooves (53) form a third optical fiber ribbon cavity (8), and at least one optical fiber ribbon (7) is arranged in the third optical fiber ribbon cavity (8).

2. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 1, characterized in that A second extension component (34) is also provided at each bottom edge of both ends of the peripheral reinforcement body (31), and the distance between the ends of the two second extension components (34) is smaller than the distance between the two vertices of the corresponding second groove (53).

3. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 1 or claim 2, characterized in that A tape layer (2) is further provided between the peripheral reinforcement member (3) and the outer protective layer (1).

4. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 3, characterized in that The outer protective layer (1) is made of low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin, or polyvinyl chloride.

5. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 4, characterized in that The material of the central reinforcement (5) is high-density polyethylene.

6. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 5, characterized in that The reinforcing steel wire (54) is made of stainless steel.

7. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 6, characterized in that The optical fiber ribbon (7) is formed by combining at least two optical fibers.

8. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 7, characterized in that The optical fiber model is G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b or A1c.

9. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 8, characterized in that The peripheral reinforcement member (3) is made of high-density polyethylene or modified polypropylene.

10. The optical fiber ribbon cable with a variable optical fiber ribbon cavity according to claim 9, characterized in that The material of the wrapping layer (2) is polyester tape, water-blocking tape, steel tape or aluminum tape.

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