CN114927282B

CN114927282B - Optical fiber ribbon cable with bending sleeve

Info

Publication number: CN114927282B
Application number: CN202210562152.5A
Authority: CN
Inventors: 王齐红; 包耀文; 任建刚
Original assignee: Changfei Photoelectric Cable Suzhou Co ltd; Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Changfei Photoelectric Cable Suzhou Co ltd; Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2023-05-12
Anticipated expiration: 2042-05-23
Also published as: CN114927282A

Abstract

The invention belongs to the technical field of optical cables, and discloses an optical fiber ribbon optical cable with bending sleeves, which is provided with a reinforcing piece (1), a plurality of insulated wires, a plurality of optical fiber ribbons (5), a plurality of bending sleeves (6), a protective layer (7) and an outer sheath (8), wherein the optical fiber ribbons (5) are composed of a plurality of optical fibers (4) and a bonding layer for wrapping all the optical fibers (4), all the bending sleeves (6) are symmetrically distributed outside the reinforcing piece (1), all the bending sleeves (6) are wrapped by the protective layer (7), and the outer sheath (8) is positioned outside the protective layer (7); the method is characterized in that: the bending sleeve (6) is internally provided with a bent optical fiber ribbon and an insulated wire which are positioned at the lower part of the bending sleeve and are attached to the reinforcing piece, and the invention has the following main beneficial technical effects: the electric power and optical signals are transmitted by the same cable, the construction is faster, the diameter is smaller, the loose tube is more convenient to replace, the material consumption is less, the cost is lower, and the manufacture is easier.

Description

Optical fiber ribbon cable with bending sleeve

Technical Field

The invention belongs to the technical field of optical cables, and discloses an optical fiber ribbon optical cable with a bent sleeve.

Background

In the prior art, loose tubes are circular structures which are stranded around a strength member, and optical fiber ribbons are located inside the loose tubes, such as the layer stranded ribbon cables recommended in the communication industry standard YD/T981 of the people's republic of China, however, such cables have the following drawbacks: for the occasion with less requirement on the number of the optical fiber ribbons, after the loose tubes with large diameters are adopted, the diameters and the cost are increased in order to round the structure of the product; in addition, in order to ensure the consistency of the lengths of the optical fiber bands and ensure the stable consistency of the optical fiber performances, a plurality of optical fiber bands need to be slightly rotated to enter the loose tube, and as the diameter of the diagonal line of the whole optical fiber band or the whole optical fiber band body with a rectangular cross-section structure is larger than the length of a long side, the inner tube of the loose tube at least needs to be larger than the diagonal line of the whole optical fiber band or the whole optical fiber band body, so that the optical fiber band body can not touch the inner wall of the loose tube in the loose tube production, and the optical fiber band body is not stressed to cause the increase of the optical fiber loss and the breakage of the loose tube; the above approach results in a loose tube with a high diameter, a high product diameter, and high costs for the piping leased by the user. On the other hand, with the increasing demand for broadband, the fiber optic ribbon access point typically requires power to accompany, and if only fiber optic access is required, the application is also required as a power consumer, which increases the cost of the consumer, where the consumer refers to an outdoor chassis, a chassis in a corridor, etc.

CN215833665U discloses a cable core and optical fiber ribbon cable of fan-shaped loose tube structure, and the cable core of fan-shaped loose tube structure includes the monomer banded loose tube that a plurality of fan-shaped set up, and adjacent monomer banded loose tube links up the banded loose tube main part that forms the cross-section for circular shape in fan-shaped angle department mutually, and banded loose tube main part is inside to be provided with central reinforcement, and optical fiber ribbon cable includes the cable core of oversheath, strap and fan-shaped loose tube structure, and the strap cladding is at fan-shaped loose tube structure's cable core periphery, and the oversheath sets up at the metal out-of-band. The ribbon loose tubes with the fan-shaped structure are adopted, the optical cable structure is small in size, the ribbon loose tubes are closely arranged, the optical fiber density is high, gaps among the loose tubes in the ribbon optical cable structure are small, the roundness is good after cabling, a gap filling rope structure is not needed to be added, and raw materials are saved. However, the photoelectric composite can not be realized, and the photoelectric composite mode can only replace the optical fiber ribbon in part of the fan-shaped loose tube structure with a power transmission unit, and the main problem of the structure is that the structure is too huge, and all the fan-shaped loose tube structures are identical to each other so as to achieve the purported roundness.

CN113744922a discloses a flame-retardant optical fiber ribbon cable, which has a plurality of optical fiber ribbons, a protective component and a central reinforcing member, and is characterized in that: the protection component consists of a reinforcing sleeve and a plurality of insulating sleeves, wherein a reinforcing hole is formed in the reinforcing sleeve, the insulating sleeve consists of a first insulating wall, a second insulating wall, a third insulating wall and a fourth insulating wall, the first insulating wall and the second insulating wall are arranged in opposite positions, the third insulating wall and the fourth insulating wall are arranged in opposite positions, one end of the first insulating wall is connected with the other end of the fourth insulating wall, one end of the fourth insulating wall is connected with the other end of the second insulating wall, one end of the second insulating wall is connected with the other end of the third insulating wall, one end of the third insulating wall is connected with the other end of the first insulating wall, the inner edge of the third insulating wall and the outer edge of the fourth insulating wall are the same in bending direction and are part of cylindrical surfaces, the axes of the two cylindrical surfaces coincide, the first insulating wall is convex, the second insulating wall is concave, the end line of the other end of the fourth insulating wall and the cylindrical axis of the fourth insulating wall are positioned in a first plane, the uppermost end of one end of the first insulating wall is positioned below the first plane, the other end of the first insulating wall is far away from the first plane than the one end of the first insulating wall, the end line of the uppermost end of the other end of the second insulating wall and the cylindrical axis of the fourth insulating wall are positioned in a second plane, the second insulating wall is positioned below the second plane, the second insulating wall is a concave part positioned below the second plane, the end line of the uppermost end of one end of the second insulating wall and the end line of the uppermost end of the other end of the second insulating wall are positioned in the second plane, the inside of the insulating sleeve is provided with insulating holes, the protective component is of an integrated structure, the insulating sleeve is distributed outside the reinforcing sleeve, the inner edge of the fourth insulating wall coincides with the outer edge of the reinforcing sleeve, the other end of the second insulating wall is tightly attached to the outer edge of the reinforcing sleeve, one end of the first insulating wall is tightly attached to the outer edge of the reinforcing sleeve, the first insulating walls of all the insulating sleeves are protruding parts which are distributed outside the reinforcing sleeve in the same clockwise direction, adjacent insulating sleeves are not contacted and form gaps, in the adjacent insulating sleeves, the concave part of the former insulating sleeve is matched with the protruding part of the latter insulating sleeve, and insulating holes are formed in the insulating sleeves; the optical fiber ribbons are positioned within the insulating holes, each optical fiber ribbon having a plurality of optical fibers therein, and the central strength member is positioned within the strength holes. The protection component is of an integrated structure, the manufacture is complex, the cost is high, and after a single insulating sleeve is damaged, the whole optical cable has a large defect, the whole optical cable needs to be replaced, and the maintenance cost is high.

CN216248472U discloses an easily-stripped rat-proof optical cable, which is provided with an outer protective layer, a first sleeve and at least one optical fiber, and is characterized in that the first sleeve is composed of a first sleeve main body and at least three first limiting components, a first tearing rope is arranged at the top end of each first limiting component, a second sleeve is arranged between each first sleeve and the outer protective layer, each second sleeve is composed of a second sleeve main body and at least three second limiting components, a second tearing rope is arranged at the top end of each second limiting component, at least three second limiting grooves are formed in the inner wall of a second cavity, the first limiting components are clamped into the corresponding second limiting grooves, an inner protective layer is arranged between each second sleeve and the outer protective layer, at least three first limiting grooves are formed in the inner wall of the inner protective layer main body, and the second limiting components of each second sleeve are clamped into the corresponding first limiting grooves. The optical cable is easy to peel by tearing the splitting rope, the optical cable cannot be co-cabled, and the optical cable is lower in cost and smaller in structure.

The prior art can not simultaneously solve the technical problems that 1, the electric power and the optical fiber ribbon are simultaneously connected; 2. how to make the diameter of the ribbon cable smaller; 3. how to make the loose tube easier to replace; 4. how to make the material consumption of the optical cable less and the cost lower.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to disclose a ribbon cable having a curved jacket, which is realized by adopting the following technical scheme.

The optical fiber ribbon cable with the bending sleeves comprises a reinforcing piece, a plurality of insulating wires, a plurality of optical fiber ribbons, a plurality of bending sleeves, a protective layer and an outer sheath, wherein the optical fiber ribbon is composed of a plurality of optical fibers and a bonding layer for wrapping all the optical fibers, all the bending sleeves are symmetrically distributed outside the reinforcing piece, all the bending sleeves are wrapped by the protective layer, and the outer sheath is positioned outside the protective layer; the method is characterized in that: the bending sleeve is composed of a bending sleeve wall body, a bending sleeve cavity is formed in the sleeve wall body, a sleeve cavity is formed in the lower portion of the lower surface of the sleeve wall body, one end face of the bending sleeve is a first end face, the other end face of the bending sleeve is a second end face, the first end face and the second end face are on the same cylindrical surface, the radius of the cylindrical surface where the first end face is located is equal to the radius R of the reinforcing piece, the diameter of the cylindrical surface where the second end face is located is equal to the diameter of the reinforcing piece, the bottom of the first end face and the bottom of the second end face are in the same plane, and the plane passes through the bottom horizontal line of the bending sleeve; the optical fibers are sequentially arranged in a curve shape, and any two adjacent optical fibers are not contacted with each other; the optical fiber ribbon is in a bent shape and is positioned in the sleeve cavity; the insulated wire is composed of an insulating layer and an electric conductor positioned in the insulating layer, and the insulated wire is positioned in the inner cavity of the sleeve; the insulating bottom surface is closely attached to the outer surface of the reinforcing member, and the first end surface and the second end surface are closely attached to the outer surface of the reinforcing member.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the reinforcement also has a central reinforcing element inside.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the insulating wire comprises an insulating layer, a first power transmission body and a second power transmission body, wherein the first power transmission body and the second power transmission body are positioned in the insulating layer, the insulating division bars are arranged in the insulating layer and are used for connecting an upper wall body and a lower wall body of the insulating layer into a whole, the insulating division bars divide the insulating layer into a left part and a right part, and the first power transmission body and the second power transmission body are respectively positioned on the left side and the right side of the insulating division bars in the insulating layer.

Further, the above-mentioned optical fiber ribbon cable with a curved jacket is characterized in that: the first power transmission body is positioned in the first insulating sleeve, the second power transmission body is positioned in the second insulating sleeve, and the first insulating sleeve and the second insulating sleeve are respectively positioned at the left side and the right side of the insulating parting bead inside the insulating layer.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the bending sleeve is deformed into three sections, the three sections are of cuboid-shaped structures, the three sections are called a left section, a middle section and a right section, the lower end face of the left section is a first end face, the lower end face of the right section is a second end face, the upper end of the left section is connected with the left end of the middle section, the right end of the middle section is connected with the upper end of the right section, the left section is parallel to the right section, the middle section is perpendicular to the left section, the sleeve cavity is similar to the bending sleeve in shape, the optical fiber ribbon is also in a shape with two right-angle bends, the sleeve cavity enclosed by the left section, the middle section and the right section is in a door-shaped shape, and the shape of the power transmission wire is consistent with the shape of the sleeve cavity.

The optical fiber ribbon optical cable with the bending sleeves comprises a reinforcing piece, a plurality of insulating wires, a plurality of optical fiber ribbons, a plurality of bending sleeves, a protective layer and an outer sheath, wherein the insulating wires are composed of electric conductors and insulating layers for coating the electric conductors, the lower surface of each insulating layer is called an insulating bottom surface, the radius of each insulating bottom surface is equal to that of the reinforcing piece, the insulating wires are positioned in an inner cavity of each sleeve, each optical fiber ribbon is composed of a plurality of optical fibers and a bonding layer for coating all the optical fibers, each optical fiber ribbon is internally provided with only one layer of optical fibers, all the bending sleeves are symmetrically distributed outside the reinforcing piece, all the bending sleeves are coated by the protective layer, and the outer sheath is positioned outside the protective layer; the method is characterized in that: the optical fiber ribbon is in a bent strip shape, an adhesive layer is arranged between adjacent optical fibers, the optical fiber ribbon is positioned in a sleeve cavity, the bent sleeve is a part of a circular cylinder or a part of an elliptical cylinder, the bent sleeve is formed by a bent sleeve wall body, the bent sleeve cavity is arranged in the sleeve wall body, the lower part of the lower surface of the sleeve wall body is provided with a sleeve cavity, one end face of the bent sleeve is a first end face, the other end face of the bent sleeve is a second end face, the first end face and the second end face are arranged on the same cylindrical surface, the radius of the cylindrical surface where the first end face is positioned is equal to the radius of a reinforcing piece, the diameter of the cylindrical surface where the second end face is positioned is equal to the diameter of the reinforcing piece, the first end face and the second end face are all clung to the outer surface of the reinforcing piece, the bottoms of the outer edges of the adjacent bent sleeves are clung to each other, and the insulating bottom face is clung to the outer surface of the reinforcing piece.

The invention has the following main beneficial technical effects: the electric power and optical signals are transmitted by the same cable, the construction is faster, the diameter is smaller, the loose tube is more convenient to replace, the material consumption is less, the cost is lower, and the manufacture is easier.

Drawings

Fig. 1 is a schematic perspective view of a section of anatomy of example 1.

Fig. 2 is an enlarged schematic cross-sectional structure of fig. 1.

Fig. 3 is a schematic cross-sectional view of the bent sleeve of fig. 1 after being bonded to an insulated wire.

Fig. 4 is a schematic cross-sectional view of the combination of a curved sleeve and a portion of an insulated wire and stiffener of fig. 1.

Fig. 5 is a schematic perspective view of a section of anatomy of example 2.

Fig. 6 is a schematic cross-sectional view showing a combination of a bent sleeve and an insulated wire used in embodiment example 3.

Fig. 7 is a schematic cross-sectional view showing a combination of a bent sleeve and an insulated wire used in embodiment example 4.

Fig. 8 is a schematic cross-sectional structure of the curved sleeve used in embodiment example 5 after being combined with a reinforcing member.

Fig. 9 is an enlarged schematic cross-sectional view of one of the curved sleeves used in fig. 6 in combination with a reinforcement member.

Fig. 10 is a schematic cross-sectional structure of a curved sleeve used in embodiment example 6 in combination with a reinforcing member.

In the figure: 1-stiffener, 2-electrical conductor, 3-insulation, 4-optical fiber, 5-optical fiber ribbon, 6-curved ferrule, 7-protective layer, 8-outer jacket, 11-central stiffener, 21-first power conductor, 22-second power conductor, 31-insulating bottom, 32-insulating spacer, 60-ferrule cavity, 61-first end face, 62-second end face, 600-ferrule cavity, 211-first insulating ferrule, 221-second insulating ferrule, bottom horizontal line of L1-curved ferrule, axis of bilateral symmetry of L2-stiffener, L3-horizontal line passing through geometric center of curved ferrule, upper and lower symmetry axis of L4-stiffener, outer edge radius of R1-curved ferrule, radius of R2-insulating bottom face, radius of R3-stiffener, distance between d-L1 and L3, major axis radius of a-curved ferrule, minor axis radius of b-curved ferrule.

Detailed Description

Example 1

Referring to fig. 1 to 4, an optical fiber ribbon cable with a bending ferrule is provided with a reinforcing member 1, six insulated wires, six optical fiber ribbons 5, six bending ferrules 6, a protective layer 7 and an outer sheath 8, wherein the optical fiber ribbons 5 are composed of a plurality of optical fibers 4 and bonding layers for wrapping all the optical fibers 4, the bending ferrules 6 are positioned outside the reinforcing member 1, all the bending ferrules 6 are symmetrically distributed outside the reinforcing member 1, the protective layer 7 wraps all the bending ferrules 6, the outer sheath 8 is positioned outside the protective layer 7, the left-right symmetry axis of the reinforcing member is L2, the upper-lower symmetry axis of the reinforcing member is L4, and the radius of the reinforcing member is R3; the method is characterized in that: the curved sleeve 6 is a part of a circular cylinder, the curved sleeve 6 is formed by a curved sleeve wall body, a curved sleeve cavity 60 is formed in the sleeve wall body, a sleeve cavity 600 is formed in the lower part of the lower surface of the sleeve wall body, one end face of the curved sleeve 6 is a first end face 61, the other end face of the curved sleeve 6 is a second end face 62, the first end face 61 and the second end face 62 are both part of cylindrical surfaces, the first end face 61 and the second end face 62 are on the same cylindrical surface, the radius of the cylindrical surface where the first end face 61 is located is equal to the radius R3 of the reinforcing piece 1, the diameter of the cylindrical surface where the second end face 62 is located is equal to the diameter of the reinforcing piece 1, the radius of the outer edge of the curved sleeve 6 is R1, the bottom of the first end face 61 and the bottom of the second end face 62 are in the same plane, the plane passes through the bottom horizontal line L1 of the curved sleeve 6, the horizontal line passing through the geometric center of the curved sleeve 6 is L3, the distance between the L1 and the L3 is d, the L1 is located above L3, d 0 is not greater than or equal to the height from the top of the curved sleeve 6 to the L1; the optical fibers 4 are sequentially arranged in a curve shape, and any two adjacent optical fibers 4 are not contacted with each other; ribbon 5 is curved and arcuate, ribbon 5 being positioned within ferrule cavity 60; the insulated wire is composed of an insulating layer 3 and an electric conductor 2 positioned in the insulating layer 3, the upper surface of the insulating layer 3 is a part of a cylinder, the lower surface of the insulating layer 3 is called an insulating bottom surface 31, the radius of the insulating bottom surface is R2, and R2=R3, and the insulated wire is positioned in a sleeve cavity 600; the insulating bottom surface 31 is in close contact with the outer surface of the reinforcing member 1, and the first end surface 61 and the second end surface 62 are in close contact with the outer surface of the reinforcing member 1, and the bottoms of the outer edges of the adjacent curved bushings 6 are in contact with the outer surface of the reinforcing member 1.

In this embodiment, the number of the insulated wires is not limited to six, but may be a plurality of other wires not less than three; the number of optical fiber ribbons 5 is not limited to six, but may be other plural ones not less than three; the number of the bending bushings 6 is not limited to six, and may be a plurality of other ones not less than three; preferably is: the number of insulated wires, curved sleeves, fiber optic ribbons is the same, and may be: the number of insulated conductors, fiber optic ribbons is less than the number of curved ferrules, in which case a portion of the ferrule interior 600 is empty, or/and a portion of the ferrule interior 60 is empty.

In this embodiment, part of the insulated wire may also be replaced by a filler, which is the same shape as the insulating layer but is solid inside or made of a foamed material.

Example 2 of the embodiment

Please refer to fig. 5, and refer to fig. 1 to 4, a fiber optic ribbon cable with a curved ferrule, substantially the same as in embodiment 1, except that: the reinforcement 1 also has a central reinforcing element 11 inside.

Example 3

Please refer to fig. 6, and refer to fig. 1 to 4, a fiber optic ribbon cable with a curved ferrule, substantially the same as in embodiment 1, except that: the insulated wire is composed of an insulating layer 3, a first power transmission body 21 and a second power transmission body 22 which are positioned in the insulating layer 3, wherein an insulating division bar 32 which is used for connecting an upper wall body and a lower wall body of the insulating layer 3 into a whole is arranged in the insulating layer 3, the insulating division bar 32 divides the insulating layer 3 into a left part and a right part, and the first power transmission body 21 and the second power transmission body 22 are respectively positioned on the left side and the right side of the insulating division bar 32 in the insulating layer 3.

Example 4

Please refer to fig. 7, and refer to fig. 1 to 4 and fig. 6, a fiber optic ribbon cable with a curved ferrule is basically the same as in embodiment 3, except that: the first power transmission body 21 is located in the first insulating sleeve 211, the second power transmission body 22 is located in the second insulating sleeve 221, and the first insulating sleeve 211 and the second insulating sleeve 221 are located on the left side and the right side of the insulating division bar 32 in the insulating layer 3 respectively.

An optical fiber ribbon cable having a curved jacket according to any of embodiment 1 to embodiment 4, wherein: the curved sleeve 6 is of a structure smaller than a semicircular column, the connecting line of the bottommost end of the outer edge of the curved sleeve 6 is a diameter or a chord, and the height from the top end of the curved sleeve 6 to L1 is not greater than R1.

An optical fiber ribbon cable having a curved jacket according to any of embodiment 1 to embodiment 4, wherein: each ferrule cavity 60 has only one optical fiber ribbon 5 therein, and each ferrule cavity 60 has a width that accommodates only one optical fiber ribbon 5; or each ferrule cavity 60 may have a width that accommodates only one ribbon 5, with a plurality of ribbons 5 within each ferrule cavity 60.

An optical fiber ribbon cable having a curved jacket according to any of embodiment 1 to embodiment 4, wherein: ribbon 5 is in the shape of a curved circular arc cylinder.

An optical fiber ribbon cable having a curved jacket according to any of embodiment 1 to embodiment 4, wherein: the upper surface of the insulating layer 3 is a part of a cylindrical surface, and the radius of the upper surface of the insulating layer 3 is equal to the radius of the lower surface of the curved sleeve 6.

Example 5

Please refer to fig. 8 and 9, and refer to fig. 1 to 4, a fiber optic ribbon cable having a curved ferrule, substantially as described in any of the above embodiments, except that: the curved ferrule 6 is a part of an elliptical cylinder, the radius of the long axis of the curved ferrule is a, the radius of the short axis of the curved ferrule is b, the line connecting the bottommost end of the outer edge of the curved ferrule 6 is L1, the height from the top end of the curved ferrule 6 to L1 is not greater than a, the ferrule cavity 60 is a part of an elliptical cylinder similar to the outer edge of the curved ferrule 6, the optical fiber ribbon 5 is in the shape of a curved elliptical cylinder, and the ferrule cavity 600 is also in the shape of a part of an elliptical cylinder.

Example 6

Referring to fig. 10, and referring to fig. 1 to 4, a ribbon cable having a curved ferrule is basically the same as any of the above embodiments except that: the curved sleeve 6 is deformed into three sections, the three sections are all rectangular parallelepiped structures, the three sections are called a left section, a middle section and a right section, the lower end face of the left section is identical to the surface of one end of the curved sleeve 6 in any of the above embodiments, the lower end face of the left section is identical to the surface of the other end of the curved sleeve 6 in any of the above embodiments, the upper end of the left section is connected with the left end of the middle section, the right end of the middle section is connected with the upper end of the right section, the left section and the right section are parallel, the middle section and the left section are perpendicular, the sleeve cavity 60 is in a shape similar to the curved sleeve 6, the optical fiber ribbon is also in a shape with two right-angle bends, the sleeve cavity 600 enclosed by the left section, the middle section and the right section is in a door-shaped shape, and the shape of the power transmission wire is consistent with the shape of the sleeve cavity 600.

In this application, through the improvement of shape, structure, solved following technical problem at least:

(1) Technical problem of electric power and optical fiber ribbon access simultaneously: the optical fiber ribbon is arranged in each bending sleeve 6, so that the access of optical signals is realized, and the insulating wire is arranged in the sleeve cavity 600 of each bending sleeve 6, so that the access of electric power is realized, and therefore, the application of the electric power is not required to be an electric power user, the procedure is omitted, and the additional expenditure for applying the access to the electric power user is omitted.

(2) The fiber optic ribbon cable has a smaller diameter: in the prior art, a mode of stranding a plurality of loose tubes is adopted, in order to round products, the dimensional relationship between the reinforcing piece and the loose tubes is required to be satisfied, and according to the structure, the dimensional correspondence between the reinforcing piece, the loose tubes and the cable core is as follows, wherein the diameter of the reinforcing piece is 1mm, and the reinforcing piece can be enlarged or reduced in the same proportion:

loose tube number (root): reinforcement diameter (mm): loose tube diameter (mm): cable core diameter (mm)

3：1：6.46：13.93

4：1：2.41：5.83

5：1：1.43：3.85

6：1：1：3

7：1：0.77：2.53

8：1：0.62：2.24

9：1：0.52：2.04

10：1：0.45：1.89

11：1：0.39：1.78

12：1：0.35：1.7

13：1：0.31：1.63

14：1：0.29：1.57

15：1：0.26：1.52

16：1：0.24：1.48

17：1：0.23：1.45

18：1：0.21：1.42

19：1：0.2：1.39

20：1：0.19：1.37

21：1：0.18：1.35

22：1：0.17：1.33

23：1：0.16：1.32

24：1：0.15：1.3

25：1：0.14：1.29

26：1：0.14：1.27

27：1：0.13：1.26

28：1：0.13：1.25

29：1：0.12：1.24

30：1：0.12：1.23

Taking a 72-core optical fiber ribbon cable as an example, an optical fiber ribbon is 12-fiber ribbon, namely, each optical fiber ribbon has 12 optical fibers, the optical fiber ribbon bandwidth is 3.4mm and the ribbon thickness is 0.4mm according to the specification in YD/T981, in the prior art, according to the extremely ideal structure, the inner diameter of a sleeve is equal to the diagonal length of the optical fiber ribbon or the diagonal length of a plurality of stacked optical fiber ribbon bodies, the optical fiber ribbon is practically impossible to be made into such a small structure, because the optical fiber ribbon needs to be rotated and hit the inner wall of the loose tube to damage the loose tube or break the loose tube when being produced, in addition, the loose tube is contracted to be reduced when being cooled after being made, the transmission performance of the optical fiber is reduced by pressing the optical fiber ribbon, so that the calculation is ideal, the wall thickness of the loose tube is 0.4mm, the cost of the case of adopting 6 optical fiber ribbons in one loose tube is the lowest, namely, the cost of 1 reinforcing piece, the case of 1 loose tube with 6 optical fiber ribbons in the inside is the case of adopting the ideal structure of at least 10.91 times of the diameter of the cable, and the actual outer diameter of the cable is at least 10.91 mm, namely, the practical coefficient of the cable is obtained by at least about 7.91 mm.

Size correspondence

Number of optical fiber ribbons in loose tube (root) loose tube outer diameter (mm)

1 4.22

2 4.29

3 4.41

4 4.56

5 4.74

6 4.96

In this application, if the mode of embodiment 1 is adopted, only one optical fiber ribbon is placed in one loose tube, then the corresponding R1 is greater than 1.8mm, and the outer diameter of the cable core is 11.4mm according to 1.9mm, so that the outer diameter can be obviously reduced because the safety coefficient is not needed to be placed additionally, and if the structure of the curved tube of the partial elliptical ring column of embodiment 2 and the structure of the double right angle folded ring column-shaped curved tube of the embodiment are adopted, the whole outer diameter of the cable core can be smaller.

(3) Make loose tube easier to change: in this application, only need take out or put into individual crooked sleeve pipe, can realize changing, can not lead to the fact the scrapping of whole optical cable owing to single sheathed tube damage.

(4) The material consumption of the optical cable is less, and the cost is lower: the diameter is reduced, so that the consumption of an external protective layer and an external sheath is greatly reduced, and the cost is lower.

(5) The same cable can be laid once, and compared with the optical cable and the cable which are laid for a plurality of times in the prior art, the construction cost is lower.

In the present application, the curved sleeve is not limited to a part of a circular cylinder, a part of an elliptical cylinder, a double right angle folded circular cylinder shape, and may be other shapes.

The optical fiber ribbon cable with the bending sleeves comprises a reinforcing piece 1, a plurality of insulated wires, a plurality of optical fiber ribbons 5, a plurality of bending sleeves 6, a protective layer 7 and an outer sheath 8, wherein the optical fiber ribbons 5 are composed of a plurality of optical fibers 4 and a bonding layer for wrapping all the optical fibers 4, all the bending sleeves 6 are symmetrically distributed outside the reinforcing piece 1, all the bending sleeves 6 are wrapped by the protective layer 7, the outer sheath 8 is positioned outside the protective layer 7, the left-right symmetry axis of the reinforcing piece is L2, the upper-lower symmetry axis of the reinforcing piece is L4, and the radius of the reinforcing piece is R3; the method is characterized in that: the curved sleeve 6 is formed by a curved sleeve wall body, a curved sleeve cavity 60 is formed in the sleeve wall body, a sleeve inner cavity 600 is formed in the lower portion of the lower surface of the sleeve wall body, one end face of the curved sleeve 6 is a first end face 61, the other end face of the curved sleeve 6 is a second end face 62, the first end face 61 and the second end face 62 are on the same cylindrical surface, the radius of the cylindrical surface where the first end face 61 is located is equal to the radius R3 of the reinforcing piece 1, the diameter of the cylindrical surface where the second end face 62 is located is equal to the diameter of the reinforcing piece 1, the bottom of the first end face 61 and the bottom of the second end face 62 are in the same plane, the plane passes through a bottom horizontal line L1 of the curved sleeve 6, the horizontal line passing through the geometric center of the curved sleeve 6 is L3, the L1 is located above the L3, and the distance between the L1 and the L3 is d is more than or equal to 0; the optical fibers 4 are sequentially arranged in a curve shape, and any two adjacent optical fibers 4 are not contacted with each other; ribbon 5 is curved in shape, ribbon 5 being positioned within ferrule cavity 60; the insulated wire is composed of an insulating layer 3 and an electric conductor 2 positioned in the insulating layer 3, the lower surface of the insulating layer 3 is called an insulating bottom surface 31, the radius of the insulating bottom surface is R2, R2 = R3, and the insulated wire is positioned in the sleeve cavity 600; the insulating bottom surface 31 is in close contact with the outer surface of the reinforcing member 1, and the first end surface 61 and the second end surface 62 are in close contact with the outer surface of the reinforcing member 1, and the bottoms of the outer edges of the adjacent curved bushings 6 are in contact with the outer surface of the reinforcing member 1.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the reinforcement 1 also has a central reinforcing element 11 inside.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the insulated wire is composed of an insulating layer 3, a first power transmission body 21 and a second power transmission body 22 which are positioned in the insulating layer 3, wherein an insulating division bar 32 which is used for connecting an upper wall body and a lower wall body of the insulating layer 3 into a whole is arranged in the insulating layer 3, the insulating division bar 32 divides the insulating layer 3 into a left part and a right part, and the first power transmission body 21 and the second power transmission body 22 are respectively positioned on the left side and the right side of the insulating division bar 32 in the insulating layer 3.

Further, the above-mentioned optical fiber ribbon cable with a curved jacket is characterized in that: the first power transmission body 21 is located in the first insulating sleeve 211, the second power transmission body 22 is located in the second insulating sleeve 221, and the first insulating sleeve 211 and the second insulating sleeve 221 are located on the left side and the right side of the insulating division bar 32 in the insulating layer 3 respectively.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the curved sleeve 6 is a part of a circular cylinder, the first end surface 61 and the second end surface 62 are both part of a cylindrical surface, the radius of the outer edge of the curved sleeve 6 is R1, the height from the top end of the curved sleeve 6 to L1 is not greater than R1, the optical fiber ribbon 5 is in a curved arc shape, and the upper surface of the insulating layer 3 is a part of a cylinder.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the curved cannula 6 is a part of an elliptical cylinder, the radius of the long axis of the curved cannula is a, the radius of the short axis of the curved cannula is b, the height from the top end of the curved cannula 6 to L1 is not greater than a, the cannula cavity 60 is a part of an elliptical cylinder similar to the outer edge of the curved cannula 6, the optical fiber ribbon 5 is in the shape of a curved elliptical cylinder, and the cannula cavity 600 is also in the shape of a part of an elliptical cylinder.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the curved sleeve 6 is deformed into three sections, the three sections are all cuboid structures, the three sections are called a left section, a middle section and a right section, the lower end face of the left section is a first end face 61, the lower end face of the right section is a second end face 62, the upper end of the left section is connected with the left end of the middle section, the right end of the middle section is connected with the upper end of the right section, the left section is parallel to the right section, the middle section is perpendicular to the left section, the sleeve cavity 60 is similar to the curved sleeve 6 in shape, the optical fiber ribbon is also provided with two right-angle bent shapes, the sleeve cavity 600 enclosed by the left section, the middle section and the right section is in a door-shaped shape, and the shape of the power transmission wire is consistent with the shape of the sleeve cavity 600.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the stiffener is plastic or metal or a composite material.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the electrical conductor is copper or aluminum or an alloy.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the insulating layer is plastic.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the type of optical fiber is single mode or multimode.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the bending sleeve is of an integral structure, and the material of the bending sleeve is plastic or alloy material, so that the bending sleeve has higher strength and higher pressure resistance.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the protective layer is an aluminum belt or a water-blocking belt or a steel belt or a polyester binding yarn or other coating materials.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the outer sheath is plastic.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the central reinforcing element is steel or iron or glass fibre reinforced plastic, the central reinforcing element being of a different material than the reinforcement.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the first current conductor is copper or aluminum or an alloy.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the second current conductor is copper or aluminum or an alloy.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: when the insulating spacer is provided, the insulating spacer and the insulating layer are of an integrated structure and made of the same material.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the material of the first insulating sleeve is plastic.

In the present application, the method is not limited to the case of the plane over-reinforcement and/or the center reinforcement where the long axis of the curved sleeve is located, but may be the case of the plane over-reinforcement and/or the center reinforcement where the short axis is located, so that the space can be saved more flexibly, and the diameter of the product can be further reduced.

In the application, the circular loose tube is creatively modified, only one part of the circular loose tube is taken, an optical fiber ribbon is placed in the tube wall body, an insulated wire is placed in the original tube cavity, the outer edge of the insulated wire is attached to the inner wall of the tube, the lower edge of the insulated wire is attached to a reinforcing piece, the lower edge of the bent tube is attached to the reinforcing piece, and the left and right symmetrical axis of the bent tube passes through the axis of the reinforcing piece or/and the center reinforcing piece, so that the stability of the structure is ensured, the space is utilized to the greatest extent, the outer diameter and the material consumption of a product are reduced, and the electric/optical cable transmission can be realized; and the sleeve in this application is opened and is shelled more conveniently, faster, change more convenient, even damage, the replacement cost is also lower.

An optical fiber ribbon cable with a bending sleeve comprises a reinforcing piece 1, a plurality of insulating wires, a plurality of optical fiber ribbons 5, a plurality of bending sleeves 6, a protective layer 7 and an outer sheath 8, wherein the insulating wires are composed of an electric conductor 2 and an insulating layer 3 coating the electric conductor, the lower surface of the insulating layer 3 is called an insulating bottom surface 31, the radius of the insulating bottom surface is equal to that of the reinforcing piece, the insulating wires are positioned in a sleeve cavity 600, the optical fiber ribbons 5 are composed of a plurality of optical fibers 4 and a bonding layer coating all the optical fibers 4, each optical fiber ribbon 5 is internally provided with only one layer of optical fibers 4, all the bending sleeves 6 are symmetrically distributed outside the reinforcing piece 1, the protective layer 7 coats all the bending sleeves 6, and the outer sheath 8 is positioned outside the protective layer 7; the method is characterized in that: the optical fiber ribbon 5 is in a bent strip shape, an adhesive layer is arranged between the adjacent optical fibers 4, the optical fiber ribbon 5 is positioned in the sleeve cavity 60, the bent sleeve 6 is a part of a circular cylinder or a part of an elliptical cylinder, the bent sleeve 6 is formed by a bent sleeve wall body, the inside of the sleeve wall body is provided with the bent sleeve cavity 60, the lower part of the lower surface of the sleeve wall body is provided with the sleeve cavity 600, one end face of the bent sleeve 6 is a first end face 61, the other end face of the bent sleeve 6 is a second end face 62, the first end face 61 and the second end face 62 are on the same cylindrical face, the radius of the cylindrical face where the first end face 61 is positioned is equal to the radius of the reinforcing piece 1, the diameter of the cylindrical face where the second end face 62 is positioned is equal to the diameter of the reinforcing piece 1, the first end face 61 and the second end face 62 are both clung to the outer surface of the reinforcing piece, the bottoms of the outer edges of the adjacent bent sleeve 6 are clung to the bottom of the outer edge of the reinforcing piece, and the insulating bottom face is clung to the outer surface of the reinforcing piece.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the plane of bilateral symmetry of each curved cannula passes through the central axis of the stiffener.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: the distance between the plane in which the bottom of the outer edge of the curved sleeve 6 is located and the straight line in which the top of the outer edge of the curved sleeve 6 is located is not greater than: the distance between the axis of the curved sleeve 6 and the line at which the top of the outer rim of the curved sleeve 6 is located.

The above-mentioned optical fiber ribbon cable with curved jacket, characterized in that: when the curved sleeves 6 are part of an elliptical cylinder, the bilateral symmetry plane of each curved sleeve is the plane where the short axis of the curved sleeve 6 is located, and in this way, the product is flatter, the outer diameter of the product is smaller, and the cost is lower, so that the curved sleeve is particularly suitable for small-core optical fiber bands, such as 4-core optical fiber bands and 6-core optical fiber bands.

In this application, only one ribbon, or multiple ribbons, but only one layer, is contained within a ferrule chamber 60, which is contiguous to maximize the space of the ferrule chamber 60.

In this application, after crooked sleeve pipe production is accomplished, can directly go on the sheath extruding machine when producing the product, need not the transposition, saved transposition equipment, can not make the product by the twist off, by the binder stab simultaneously owing to the transposition.

The application has the following main beneficial technical effects: the electric power and optical signals are transmitted by the same cable, the construction is faster, the diameter is smaller, the loose tube is more convenient to replace, the material consumption is less, the cost is lower, and the manufacture is easier.

The above-described embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.

Claims

1. An optical fiber ribbon optical cable with bending sleeves is provided with a reinforcing piece (1), a plurality of insulated wires, a plurality of optical fiber ribbons (5), a plurality of bending sleeves (6), a protective layer (7) and an outer sheath (8), wherein the optical fiber ribbons (5) are composed of a plurality of optical fibers (4) and a bonding layer for wrapping all the optical fibers (4), all the bending sleeves (6) are symmetrically distributed outside the reinforcing piece (1), all the bending sleeves (6) are wrapped by the protective layer (7), the outer sheath (8) is positioned outside the protective layer (7), the left-right symmetry axis of the reinforcing piece is L2, the upper-lower symmetry axis of the reinforcing piece is L4, and the radius of the reinforcing piece is R3; the method is characterized in that: the bending sleeve (6) is formed by a bending sleeve wall body, a bending sleeve cavity (60) is formed in the bending sleeve wall body, a sleeve inner cavity (600) is formed in the lower portion of the lower surface of the sleeve wall body, one end face of the bending sleeve (6) is a first end face (61), the other end face of the bending sleeve (6) is a second end face (62), the first end face (61) and the second end face (62) are arranged on the same cylindrical surface, the radius of the cylindrical surface where the first end face (61) is located is equal to the radius R3 of the reinforcing piece (1), the diameter of the cylindrical surface where the second end face (62) is located is equal to the diameter of the reinforcing piece (1), the bottom of the first end face (61) and the bottom of the second end face (62) are in the same plane, the plane passes through a bottom horizontal line L1 of the bending sleeve (6), the horizontal line passing through the geometric center of the bending sleeve (6) is L3, the L1 is located above L3, and the distance between the L1 and the L3 is d is more than or equal to 0; the optical fibers (4) are sequentially arranged in a curve shape, and any two adjacent optical fibers (4) are not contacted with each other; the optical fiber ribbon (5) is in a bent shape, and the optical fiber ribbon (5) is positioned in the sleeve cavity (60); the insulated wire is composed of an insulating layer (3) and an electric conductor (2) positioned in the insulating layer (3), the lower surface of the insulating layer (3) is called an insulating bottom surface (31), the radius of the insulating bottom surface is equal to the radius of the cylindrical surface where the first end surface (61) is positioned and the radius of the reinforcing piece (1), and the insulated wire is positioned in the sleeve cavity (600); the insulating bottom surface (31) is closely attached to the outer surface of the reinforcement (1), the first end surface (61) and the second end surface (62) are both closely attached to the outer surface of the reinforcement (1), and the bottoms of the outer edges of adjacent curved bushings (6) are abutted against the outer surface of the reinforcement (1).

2. A fiber optic ribbon cable having a curved ferrule as defined in claim 1, wherein: the reinforcement (1) also has a central reinforcement element (11) inside.

3. A fiber optic ribbon cable having a curved ferrule as defined in claim 2, wherein: the insulated wire comprises an insulating layer (3), a first power transmission body (21) and a second power transmission body (22) which are positioned in the insulating layer (3), wherein an insulating division bar (32) which connects an upper wall body and a lower wall body of the insulating layer (3) into a whole is arranged in the insulating layer (3), the insulating division bar (32) divides the insulating layer (3) into a left part and a right part, the first power transmission body (21) is positioned in the insulating layer (3) at the left side of the insulating division bar (32), and the second power transmission body (22) is positioned in the insulating layer (3) at the right side of the insulating division bar (32).

4. A fiber optic ribbon cable having a curved ferrule as defined in claim 3, wherein: the first power transmission body (21) is located in the first insulating sleeve (211), the second power transmission body (22) is located in the second insulating sleeve (221), the first insulating sleeve (211) is located in the insulating layer (3) on the left side of the insulating division bar (32), and the second insulating sleeve (221) is located in the insulating layer (3) on the right side of the insulating division bar (32).

5. A ribbon cable having a curved jacket as claimed in any of claims 1 to 4, wherein: the bending sleeve (6) is a part of a circular cylinder, the first end face (61) and the second end face (62) are both part of another cylindrical surface, the outer edge radius of the bending sleeve (6) is R1, the height from the top end of the bending sleeve (6) to L1 is not more than R1, the optical fiber ribbon (5) is in a bent arc shape, and the upper surface of the insulating layer (3) is a part of a cylinder.

6. A ribbon cable having a curved jacket as claimed in any of claims 1 to 4, wherein: the curved cannula (6) is a part of an elliptical cylinder, the height from the top end of the curved cannula (6) to L1 is not larger than the radius of the long axis of the curved cannula, the cannula cavity (60) is a part of an elliptical cylinder similar to the outer edge of the curved cannula (6), the optical fiber ribbon (5) is in the shape of the curved elliptical cylinder, and the cannula cavity (600) is a part of the elliptical cylinder.

7. A ribbon cable having a curved jacket as claimed in any of claims 1 to 4, wherein: the bending sleeve (6) is deformed into three sections, the three sections are of cuboid-shaped structures, the three sections are called a left section, a middle section and a right section, the lower end face of the left section is a first end face (61), the lower end face of the right section is a second end face (62), the upper end of the left section is connected with the left end of the middle section, the right end of the middle section is connected with the upper end of the right section, the left section and the right section are parallel, the middle section and the left section are perpendicular, the sleeve cavity (60) is similar to the bending sleeve (6), the optical fiber ribbon is also of a shape with two right-angle bends, the sleeve cavity (600) formed by the left section, the middle section and the right section in a surrounding mode is of a door-shaped shape, and the shape of a power transmission wire is consistent with the shape of the sleeve cavity (600).

8. A ribbon cable having a curved jacket as claimed in any of claims 1 to 4, wherein: the material of the reinforcement is plastic or metal; the material of the electric conductor is copper or aluminum; the material of the insulating layer is plastic.

9. An optical fiber ribbon optical cable with bending sleeves is provided with a reinforcing piece (1), a plurality of insulating wires, a plurality of optical fiber ribbons (5), a plurality of bending sleeves (6), a protective layer (7) and an outer sheath (8), wherein the insulating wires are composed of electric conductors (2) and insulating layers (3) for covering the electric conductors, the lower surfaces of the insulating layers (3) are called insulating bottom surfaces (31), the radius of the insulating bottom surfaces is equal to that of the reinforcing piece, the insulating wires are positioned in a sleeve cavity (600), the optical fiber ribbons (5) are composed of a plurality of optical fibers (4) and a bonding layer for covering all the optical fibers (4), each optical fiber ribbon (5) is internally provided with only one layer of optical fibers (4), all the bending sleeves (6) are symmetrically distributed outside the reinforcing piece (1), the protective layer (7) covers all the bending sleeves (6), and the outer sheath (8) is positioned outside the protective layer (7); the method is characterized in that: the optical fiber ribbon (5) is in a bent strip shape, an adhesive layer is arranged between the adjacent optical fibers (4), the optical fiber ribbon (5) is positioned in a sleeve cavity (60), the bent sleeve (6) is a part of a circular cylinder or a part of an elliptical cylinder, the bent sleeve (6) is formed by a bent sleeve wall body, the inside of the sleeve wall body is provided with the bent sleeve cavity (60), the lower part of the lower surface of the sleeve wall body is provided with the sleeve cavity (600), one end surface of the bent sleeve (6) is a first end surface (61), the other end surface of the bent sleeve (6) is a second end surface (62), the first end surface (61) and the second end surface (62) are positioned on the same cylindrical surface, the radius of the cylindrical surface where the first end surface (61) is positioned is equal to the radius of the reinforcing piece (1), the diameter of the second end surface (62) is equal to the diameter of the reinforcing piece (1), the first end surface (61) and the second end surface (62) are both clung to the outer surface of the reinforcing piece, the bottom surface of the adjacent bent sleeve (6) is clung to the outer surface of the reinforcing piece, and the bottom surface of the insulating piece is clung to the outer surface of the reinforcing piece; the distance between the plane where the bottom of the outer edge of the curved sleeve (6) is located and the straight line where the top of the outer edge of the curved sleeve (6) is located is not greater than: the distance between the axis of the curved sleeve (6) and the line at which the top of the outer edge of the curved sleeve (6) is located; each curved sleeve has only one plane of symmetry, the central axis of the stiffener being the axis located at the centre of the stiffener and extending along the centre of the stiffener, the plane of symmetry of each curved sleeve passing through the central axis of the stiffener.

10. A ribbon cable having curved ferrules according to claim 9 wherein the plane of symmetry of each curved ferrule is the plane of the short axis of the curved ferrule (6) when the curved ferrule (6) is part of an elliptical cylinder.