Optical fiber ribbon optical cable with forming part

Abstract

The invention belongs to the technical field of optical cables, and discloses an optical fiber ribbon optical cable with forming parts, the optical fiber ribbon optical cable is provided with a cable core and an outer sheath located outside the cable core, the number of optical fiber ribbons in the cable core can be changed by changing the number of the forming parts and the size of ribbon containing channels formed between the adjacent forming parts, and the optical fiber ribbons are located in the ribbon containing channels. Each optical fiber ribbon in each ribbon accommodating channel is of an integrated structure, and each optical fiber ribbon in each ribbon accommodating channel is provided with at least three bends; the outer sheath wraps the cable core. The invention has the main beneficial technical effects of simple structure, easy manufacture, easy storage, more saved manufacturing space, higher space utilization rate, less non-fiber material consumption and low cost, and is more suitable for large-core optical fiber ribbons.

Description

Technical Field

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

[0002] With the popularization of broadband, users have put forward new demands for bandwidth. For this reason, optical fiber ribbons and optical cables are widely used. However, in the optical cables in the prior art, the width of the optical fiber ribbon used will affect the consumption of non-fiber materials of the optical cable, and thus affect the cost of the optical cable. For example, when the number of optical fibers in the optical fiber ribbon is large, the length of the optical fiber ribbon is usually longer in the cross section. For example, the typical size is 12 fiber ribbons with a nominal length of 3.4 mm. As the number of optical fibers in the ribbon increases, the length of the ribbon increases. And for layer-twisted or center-beam-tube optical cable, it is to place the optical fiber ribbon in the inner cavity of the loose tube of circular cross section, in order to make the length of the optical fiber ribbon in the loose tube as long as possible, so as not to make the optical cable in use due to the excessive difference in the length of the optical fiber ribbon and cause internal stress, so that the optical and mechanical properties of the optical fiber ribbon are affected; in the production process of the loose tube, the optical fiber ribbon must not touch the loose tube inner wall, so when the optical fiber ribbon is in the loose tube, it is necessary to have a gap between the inner wall of the loose tube, and usually the internal diameter of the loose tube is at least more than 1.2 times the diagonal length of the optical fiber ribbon stack; for the optical fiber ribbon with a larger core number, the waste of the loose tube space is caused, and the loose tube is increased, and the consumption of other materials outside the loose tube is increased, that is, the consumption of non-fiber materials is increased, and the cost is increased. There is no corresponding solution in the prior art.

[0003] CN117031668A discloses a non-metallic outdoor optical cable for communication, which has a cable core, a non-metallic reinforcement layer, and an outer sheath; the cable core is composed of 3n identical bending parts and reinforcement parts, the bending parts are composed of a bending body and an optical fiber ribbon located inside the bending body, and the bending parts are stacked in the same bending direction and n parts are stacked into three stacks, n is a positive integer, and on a plane perpendicular to the axis of the optical cable, the inner surfaces of the three stacks form a central cavity, and the outer surfaces of the three stacks and the first side surfaces of the three stacks form the outer surface of the cable core, and the reinforcement parts are located in the central cavity and the three stacks are all attached to the reinforcement parts. It is spliced ​​by a single optical fiber ribbon bent into a bow shape.

[0004] CN116577889A discloses a special-shaped butterfly-shaped optical cable, which includes a cable core and an outer sheath. The cable core is composed of a special-shaped butterfly-shaped introduction unit and two identical protection modules. The special-shaped butterfly-shaped introduction unit is an integral structure formed by extrusion, and the special-shaped butterfly-shaped introduction unit is a special structure. The protection module is composed of an integral structure of a clamping convex column, a protection body, and a protection extension body. One end of the clamping convex column is connected to one end of the protection body, and the other end of the protection body is connected to one end of the protection extension body. The protection body and the protection extension body are both curved structures. In the combined state, the two protection modules are clamped with the special-shaped butterfly-shaped introduction unit to form a cable core with a cylindrical surface. The outer sheath is located outside the cable core. The core is expanded by unidirectional extension.

[0005] CN115657241A discloses a ribbon optical fiber sensing cable, comprising a central reinforcement member and an optical fiber unit layer outside the central reinforcement member, wherein the optical fiber unit layer comprises at least one flat ribbon optical fiber unit continuously spirally wound around the central reinforcement member, and the optical fiber unit with a flat ribbon structure can better fit the surface of the central reinforcement member or the inner armor layer, thereby improving the sensitivity of the detection signal by reducing the gap.

[0006] CN104808303A discloses a reel-type optical unit cable and its manufacturing process, comprising an optical unit and a jacket layer, wherein the optical unit comprises a reel-type optical fiber ribbon and an aramid fiber in the center, and the reel-type optical fiber ribbon is wrapped with a water-blocking material, a cable tie, and a sleeve in sequence. It is realized by winding, but it is inconvenient to assemble and separate.

[0007] The above-mentioned prior arts cannot effectively solve the corresponding technical problems. Summary of the invention

[0008] To solve the above problems, the purpose of the present invention is to disclose an optical fiber ribbon cable with a molded component, which is achieved by adopting the following technical solutions.

[0009] A fiber optic cable with molded components comprises a cable core and an outer sheath located outside the cable core, wherein the number of fiber optic ribbons in the cable core can be changed by changing the number of molded components and the size of fiber optic channels formed between adjacent molded components, the fiber optic ribbons are located in the fiber optic channels, each fiber optic ribbon in each fiber optic channel is an integrated structure, and each fiber optic ribbon in each fiber optic channel has at least three bends.

[0010] The optical fiber ribbon cable with molded components described above is characterized in that: each molded component is composed of at least three bodies connected in sequence as a whole, and bends are formed between adjacent bodies; through bending, the distance between the upper surface and the lower surface of the molded component is converted into a path between the upper surface and the lower surface of the molded component; the path contains at least three bends, and adjacent molded components are arranged in parallel.

[0011] An optical fiber ribbon cable with molding components, comprising a cable core and an outer sheath located outside the cable core, characterized in that: the cable core is composed of multiple optical fiber ribbons and multiple identical molding components, each molding component is composed of n bodies connected in sequence, bends are formed between adjacent bodies, the bending directions of the bends with odd numbers are the same, the bending directions of the bends with even numbers are the same, and the bending directions of the bends with odd numbers are opposite to the bending directions of the bends with even numbers; the bodies with odd numbers are parallel, the bodies with even numbers are parallel, and the bodies with odd numbers are not parallel to the bodies with even numbers; the molding components are distributed in rows, the surfaces of the upper ends of all the molding components are in a first plane, the surfaces of the lower ends of all the molding components are in a second plane, a band-containing channel is formed between adjacent molding components, the optical fiber ribbon is located in the band-containing channel, and the optical fiber ribbon in each band-containing channel has n-1 bends; the outer sheath covers the cable core, n≥3, and n is a positive integer.

[0012] A fiber optic cable with a molding component, comprising a cable core and an outer sheath located outside the cable core, characterized in that: the cable core is composed of multiple optical fiber ribbons and multiple identical molding components, each molding component is composed of a first body, a second body, a third body, and a fourth body connected in sequence as one, a first bend is formed between the first body and the second body, a second bend is formed between the second body and the third body, and a third bend is formed between the third body and the fourth body, the first bend is in the same direction as the third bend, and the second bend is in the opposite direction to the first bend; the molding components are distributed in a row, the surfaces of the upper ends of all the molding components are in the first plane, the surfaces of the lower ends of all the molding components are in the second plane, a belt-containing channel is formed between adjacent molding components, the optical fiber ribbon is located in the belt-containing channel, and the optical fiber ribbon in the belt-containing channel has three bends; the outer sheath covers the cable core.

[0013] The present application has the following major beneficial technical effects: simple structure, easy to manufacture, easy to store, more space-saving manufacturing, higher space utilization, more suitable for large-core optical fiber ribbons, less consumption of non-fiber materials, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure after dissection of Example 1.

[0015] Figure 2 for Figure 1 Schematic diagram of the enlarged cross-section structure.

[0016] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of a section of the two molded parts used in the dissection.

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged cross-section structure.

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of Example 2 after the optical fiber ribbon is removed.

[0019] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure of a section of the two molded parts used in the dissection.

[0020] Figure 7 for Figure 6 Schematic diagram of the enlarged cross-section structure. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand and implement this patent, the marks in the drawings are now described in detail in conjunction with the drawings in the specification.

[0022] In the figure: 1 - optical fiber ribbon, 2 - molding component, 3 - filling component, 4 - outer sheath, 20 - ribbon receiving channel, 21 - first body, 22 - second body, 23 - third body, 24 - fourth body.

[0023] Implementation Example 1: Please see Figures 1 to 4 , an optical fiber ribbon cable with a molding component, comprising a cable core and an outer sheath 4 located outside the cable core, characterized in that: the cable core is composed of a plurality of optical fiber ribbons 1 and a plurality of identical molding components 2, each molding component 2 is composed of a first body 21, a second body 22, a third body 23, and a fourth body 24 connected in sequence, a first bend is formed between the first body 21 and the second body 22, a second bend is formed between the second body 22 and the third body 23, and a third bend is formed between the third body 23 and the fourth body 24, the first bend is in the same direction as the third bend, and the second bend is in the opposite direction to the first bend; the molding components 2 are distributed in a row, the upper surfaces of all the molding components 2 are in the first plane, the lower surfaces of all the molding components 2 are in the second plane, a belt channel 20 is formed between adjacent molding components 2, the optical fiber ribbon 1 is located in the belt channel 20, and the optical fiber ribbon 1 in the belt channel 20 has three bends; the outer sheath 4 covers the cable core.

[0024] The optical fiber ribbon cable with molded components described above is characterized in that there are also multiple filling components 3, the filling components 3 are embedded in the space to the left of the leftmost molded component 2 in the cable core, and the filling components 3 are also embedded in the space to the right of the rightmost molded component 2 in the cable core.

[0025] The optical fiber ribbon cable with a molding component described above is characterized in that the cross section of the filling component 3 is a right triangle.

[0026] The optical fiber ribbon cable with a molded component described above is characterized in that a reinforcing member is provided inside the filling component 3 .

[0027] The optical fiber ribbon cable with a molded component described above is characterized in that a reinforcement member is provided inside the partial filling component 3 .

[0028] The optical fiber ribbon cable with molded components described above is characterized in that the material of the reinforcement member is copper, aluminum, iron, steel, glass fiber reinforced plastic, copper alloy or aluminum alloy.

[0029] The optical fiber ribbon cable with molded parts described above is characterized in that there is at least one protective layer between the cable core and the outer sheath 4, and the material of the protective layer is steel belt or aluminum belt or water-blocking belt or non-woven fabric or polyester belt or glass fiber reinforced plastic belt or mica belt.

[0030] Implementation Example 2: Please see Figures 5 to 7 , and refer to Figures 1 to 4 , an optical fiber ribbon cable with a molded component, is basically the same as implementation example 1, except that: the tops of the first bend angle, the second bend angle, and the third bend angle are all curved and have no sharp protrusions. In this way, when the optical fiber ribbon is located in the ribbon containing channel 20, although the optical fiber ribbon is also in a bent state, it does not have a sharp bending angle, which is more conducive to the structural stability of the optical fiber ribbon.

[0031] The optical fiber ribbon described in the present application is composed of multiple optical fibers and an adhesive layer covering all the optical fibers. In the original state, the optical fiber ribbon is arranged in rows and adjacent optical fibers do not contact each other. The covering refers to overall covering or edge bonding.

[0032] The optical fiber ribbon cable with molding components described in the present application has a cable core and an outer sheath located outside the cable core, characterized in that: the cable core is composed of multiple optical fiber ribbons and multiple identical molding components, each molding component is composed of n bodies connected in sequence as one, and bends are formed between adjacent bodies. The preferred manner is: the bending directions of the bends with odd numbers are the same, the bending directions of the bends with even numbers are the same, and the bending directions of the bends with odd numbers are opposite to the bending directions of the bends with even numbers; at the same time, the preferred manner is: the bodies with odd numbers are parallel, the bodies with even numbers are parallel, and the bodies with odd numbers are not parallel to the bodies with even numbers; the molding components are distributed in rows, the surfaces of the upper ends of all the molding components are in the first plane, the surfaces of the lower ends of all the molding components are in the second plane, and a band-containing channel is formed between adjacent molding components, and the optical fiber ribbons are located in the band-containing channel, The optical fiber ribbon in each of the fiber-containing channels has n-1 bends; the outer sheath covers the cable core, n≥3, and n is a positive integer.

[0033] In the present application, the optical fiber ribbon in each receiving channel is not limited to the one in the drawings, but may be multiple, and multiple optical fiber ribbons are distributed in a stacked manner, that is, there is at least one optical fiber ribbon in each receiving channel.

[0034] In the present application, the number of optical fiber ribbons 1 is expanded by the molding component 2, and the number of optical fiber ribbons 1 in a single receiving channel 20 is controlled by the width of the receiving channel 20; in the present application, the number of optical fibers in the optical fiber ribbon 1 is controlled by the molding component 2 and the path of the receiving channel 20 formed by the molding component 2; the straight fiber is curved by having at least two bends in the receiving channel 20 and the curved path, so that the path length of the receiving channel 20 is much larger than the distance between the upper surface and the lower surface of the molding component 2, thereby achieving the purpose of placing an optical fiber ribbon with a larger number of cores in a smaller space without causing degradation of the mechanical and optical properties of the optical fiber.

[0035] In the present application, the filling component can be used as a filler to stabilize the cable core structure. In addition, when it has a reinforcement member inside, it can increase the mechanical properties of the optical cable. When it is a good conductor, it can also be used to transmit electricity and / or electrical signals, thereby achieving the purpose of optical and electrical transmission on the same cable, saving access costs, multiple laying costs, and the like.

[0036] In the present application, each molded component is an integrated structure and can be formed in one step by extrusion. Its cross-section is similar to or called a corrugated structure. It is very convenient to store and can be stored in a stacked manner, which significantly saves space and does not require cable reels to wind loose tubes. At the same time, due to the stacking and there is basically no gap between the upper and lower layers, the space utilization rate is higher, and the production site can be better utilized.

[0037] In the present application, each molded component is preferably a vertically symmetrical structure. In this case, the cross-section of the cable core can be rectangular, so that when the outer sheath is a matching shape, it can be suitable for laying in a rectangular pipe space.

[0038] In the present application, each molded component is preferably parallel to the upper and lower surfaces. In this case, even if it is not symmetrical up and down, it can form a parallelogram-like cross-section. When the outer sheath is a matching shape, it can be suitable for laying in a parallelogram-shaped pipeline space.

[0039] Furthermore, the optical fiber ribbon cable with molded components described in the present application comprises a cable core and an outer sheath located outside the cable core, and is characterized in that the number of optical fiber ribbons in the cable core can be changed by changing the number of molded components and the size of the fiber-receiving channels formed between adjacent molded components, the optical fiber ribbons are located in the fiber-receiving channels, each optical fiber ribbon in each fiber-receiving channel is an integrated structure, and each optical fiber ribbon in each fiber-receiving channel has at least three bends.

[0040] The optical fiber ribbon cable with molded components described above is characterized in that: each molded component is composed of at least three bodies connected in sequence as a whole, and bends are formed between adjacent bodies; through bending, the distance between the upper surface and the lower surface of the molded component is converted into a path between the upper surface and the lower surface of the molded component; the path contains at least three bends, and adjacent molded components are arranged in parallel.

[0041] The optical fiber ribbon cable with a molded component described in the present application is characterized in that the material of the molded component 2 is plastic, and can also be other materials, such as copper, steel, iron, other alloys, etc., but there is no doubt that plastic is the easiest to shape, the easiest to manufacture, and the lowest cost.

[0042] The optical fiber ribbon cable with molded components described in the present application is characterized in that: when there is no reinforcement inside the filling component 3, the material of the filling component 3 is plastic, and can also be foamed plastic, which can reduce material consumption and material weight; when there is a reinforcement inside, the material of the filling component 3 can also be the above-mentioned material, and the material of the reinforcement is copper or aluminum or iron or steel or glass fiber reinforced plastic or copper alloy or aluminum alloy.

[0043] The optical fiber ribbon cable with molded parts described in the present application is characterized in that the material of the outer sheath 4 is plastic.

[0044] The present application has the following major beneficial technical effects: simple structure, easy to manufacture, easy to store, more space-saving manufacturing, higher space utilization, more suitable for large-core optical fiber ribbons, less consumption of non-fiber materials, and low cost.

[0045] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An optical fiber ribbon cable with a molded component, comprising a cable core and an outer sheath located outside the cable core, characterized in that: The number of optical fiber ribbons in the cable core can be changed by changing the number of molding components and the size of the fiber-containing channels formed between adjacent molding components. The optical fiber ribbons are located in the fiber-containing channels. Each optical fiber ribbon in each fiber-containing channel is an integrated structure. Each optical fiber ribbon in each fiber-containing channel has at least three bends.

2. The optical fiber ribbon cable with a molded component according to claim 1, characterized in that: Each forming component is composed of at least three bodies connected in sequence as a whole, and bends are formed between adjacent bodies; through the bending, the distance between the upper surface and the lower surface of the forming component is converted into a path between the upper surface and the lower surface of the forming component; the path contains at least three bends, and adjacent forming components are arranged in parallel.

3. An optical fiber ribbon cable with a molded component, comprising a cable core and an outer sheath located outside the cable core, characterized in that: The cable core is composed of multiple optical fiber ribbons and multiple identical molding components, each molding component is composed of n bodies connected in sequence, and bends are formed between adjacent bodies. The bending directions of the bends with odd numbers are the same, and the bending directions of the bends with even numbers are the same, and the bending directions of the bends with odd numbers are opposite to the bending directions of the bends with even numbers; the bodies with odd numbers are parallel, the bodies with even numbers are parallel, and the bodies with odd numbers are not parallel to the bodies with even numbers; the molding components are distributed in rows, the surfaces of the upper ends of all molding components are in the first plane, and the surfaces of the lower ends of all molding components are in the second plane, and a band-containing channel is formed between adjacent molding components, the optical fiber ribbon is located in the band-containing channel, and the optical fiber ribbon in each band-containing channel has n-1 bends; the outer sheath covers the cable core, n≥3, and n is a positive integer.

4. The optical fiber ribbon cable with a molded component according to claim 3, characterized in that: There is at least one optical fiber ribbon in each ribbon-containing channel, and multiple optical fiber ribbons are distributed in a stacked manner.

5. An optical fiber ribbon cable with a molded component, comprising a cable core and an outer sheath located outside the cable core, characterized in that: The cable core is composed of multiple optical fiber ribbons and multiple identical molding components. Each molding component is composed of a first body, a second body, a third body, and a fourth body connected in sequence. A first bend is formed between the first body and the second body, a second bend is formed between the second body and the third body, and a third bend is formed between the third body and the fourth body. The first bend is in the same direction as the third bend, and the second bend is in the opposite direction to the first bend. The molding components are distributed in rows, the surfaces of the upper ends of all molding components are in the first plane, the surfaces of the lower ends of all molding components are in the second plane, and a belt-containing channel is formed between adjacent molding components. The optical fiber ribbon is located in the belt-containing channel, and the optical fiber ribbon in the belt-containing channel has three bends. The outer sheath covers the cable core.

6. An optical fiber ribbon cable with a molded component according to any one of claims 1 to 5, characterized in that: There are also a plurality of filling components, the filling components being embedded in the space on the left side of the leftmost shaped component in the cable core, and the filling components being embedded in the space on the right side of the rightmost shaped component in the cable core.

7. The optical fiber ribbon cable with a molded component according to claim 6, characterized in that: The filling member has a reinforcement member inside.

8. The optical fiber ribbon cable with a molded component according to claim 7, characterized in that: The material of the reinforcement member is copper or aluminum or iron or steel or glass fiber reinforced plastic or copper alloy or aluminum alloy.

9. The optical fiber ribbon cable with a molded component according to claim 8, characterized in that: There is at least one protective layer between the cable core and the outer sheath, and the material of the protective layer is steel tape, aluminum tape, water-blocking tape, non-woven fabric, polyester tape, glass fiber reinforced plastic tape, or mica tape.

10. The optical fiber ribbon cable with a molded component according to claim 9, characterized in that: The material of the molded part is plastic, and the material of the outer sheath is plastic.

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