CN117826352A - Expandable optical fiber ribbon cable - Google Patents
Expandable optical fiber ribbon cable Download PDFInfo
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- CN117826352A CN117826352A CN202410252154.3A CN202410252154A CN117826352A CN 117826352 A CN117826352 A CN 117826352A CN 202410252154 A CN202410252154 A CN 202410252154A CN 117826352 A CN117826352 A CN 117826352A
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- optical fiber
- expansion piece
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 104
- 239000010410 layer Substances 0.000 claims description 108
- 239000011241 protective layer Substances 0.000 claims description 35
- -1 polybutylene terephthalate Polymers 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 8
- 229920001903 high density polyethylene Polymers 0.000 claims description 5
- 239000004700 high-density polyethylene Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4407—Optical cables with internal fluted support member
- G02B6/4409—Optical cables with internal fluted support member for ribbons
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the technical field of cables, and discloses an expandable optical fiber ribbon optical cable, which is provided with an outer protection layer and a framework, wherein the outer protection layer is positioned outside the framework, and is characterized in that: the framework is composed of three supporting plates, at least one middle expansion piece and one tail end expansion piece are arranged between the three supporting plates, the framework is nested and fixed with the adjacent middle expansion pieces, the adjacent two middle expansion pieces are nested and fixed, the tail end expansion pieces are nested and fixed with the adjacent middle expansion pieces, an optical fiber ribbon is arranged between the framework and the middle expansion pieces, an optical fiber ribbon is arranged between the adjacent two middle expansion pieces, an optical fiber ribbon is arranged between the tail end expansion pieces and the adjacent middle expansion pieces, and optical fibers are arranged in the tail end expansion pieces; the invention has the beneficial effects of expandable optical fiber ribbon, convenient optical fiber ribbon taking, stable structure, strong pressure resistance and the like.
Description
Technical Field
The invention belongs to the technical field of cables, and particularly relates to an expandable optical fiber ribbon cable.
Background
In the prior art, as in CN116609898A, a loose tube embedded optical fiber ribbon cable is disclosed, which has a central reinforcing member, a plurality of loose tubes, and an outer jacket, wherein the plurality of loose tubes are located outside the central reinforcing member; the method is characterized in that: the device also comprises a plurality of embedded parts, wherein each embedded part consists of an embedded body, a first embedded end and a second embedded end which are positioned at two ends of the embedded body, the outer edge of the embedded body is a part of a cylindrical surface, and the first embedded end and the second embedded end extend towards the axial direction of the cylinder where the outer edge of the embedded body is positioned; the loose tube is composed of a tube body, a groove is formed in the outer edge of the tube body, a tube cavity extending along the axial direction is formed in the loose tube, at least one optical fiber ribbon is arranged in the tube cavity, and the optical fiber ribbon is composed of a plurality of optical fibers and a bonding layer which integrally covers the optical fibers; the grooves on the loose tubes face the outer jacket, the first embedded end of one embedded part and the second embedded end of the other embedded part are embedded in the groove of each loose tube, the first embedded end and the second embedded end in the groove of each loose tube are clung to each other and clung to the inner wall of the groove of the loose tube, the outer edges of the embedded bodies of all the embedded parts are on the same cylindrical surface, and the outer jacket is coated outside the embedded parts. The prior art has the following defects: 1. the optical fiber ribbon in the cable core cannot be expanded, and 2. The compression resistance is poor.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to disclose an expandable optical fiber ribbon cable, which is realized by adopting the following technical solutions.
An expandable optical fiber ribbon cable having an outer jacket and a backbone, the outer jacket being located outside the backbone, characterized in that: the framework is composed of three supporting plates;
in the same cross section, one end of each of the three support plates is connected at one position, the included angle between every two adjacent support plates is 120 degrees, two sides of the other end of each support plate are respectively provided with a second limiting part, the included angle between each second limiting part and the corresponding support plate is 60 degrees, and a second accommodating groove is formed between every two adjacent support plates;
each second accommodating groove is internally provided with a subunit, each subunit is composed of at least one middle expansion piece and one tail end expansion piece, each middle expansion piece is composed of two first expansion pieces, two first limiting parts and a third supporting block, one ends of the two first expansion pieces are connected, an included angle between the two first expansion pieces is 120 degrees, a first accommodating groove is formed between the two first expansion pieces, one ends of the two first limiting parts are respectively connected with the other ends of the corresponding first expansion pieces, the included angle between the first limiting parts and the corresponding first expansion pieces is 60 degrees, the two first limiting parts are positioned on one side of the first accommodating groove, and a third supporting block is arranged outside the included angle at the joint of the two first expansion pieces;
when the middle expansion piece is arranged in the corresponding second accommodating groove, the third supporting block of the middle expansion piece props against an included angle between the corresponding two supporting plates, the third supporting block of the middle expansion piece is attached to the corresponding two supporting plates, two sides of the third supporting block of the middle expansion piece are provided with at least one optical fiber ribbon, and the first expansion piece of the middle expansion piece, the corresponding supporting plate and the second limiting part are arranged between the first expansion piece and the second limiting part;
when the frame is provided with a plurality of middle expansion pieces, the third support blocks of the middle expansion pieces adjacent to the frame are propped against the included angle between the two corresponding support plates, the third support blocks of the middle expansion pieces adjacent to the frame are attached to the two corresponding support plates, two sides of the third support blocks of the middle expansion pieces adjacent to the frame are provided with at least one optical fiber ribbon between the first expansion piece of the middle expansion piece adjacent to the frame and the corresponding support plate and the second limiting part; the middle expansion piece far away from the center of the cable core is embedded in the second accommodating groove of the adjacent middle expansion piece near the center of the cable core, the third support block of the middle expansion piece far away from the center of the cable core props against the included angle between the two first expansion pieces of the adjacent middle expansion piece near the center of the cable core, the third support block of the middle expansion piece far away from the center of the cable core is respectively attached to the two first expansion pieces of the middle expansion piece near the center of the cable core, two sides of the third support block of the middle expansion piece far away from the center of the cable core, and an optical fiber ribbon is arranged between the first expansion piece far away from the center of the cable core and the corresponding first expansion piece and the first limiting component of the adjacent middle expansion piece near the center of the cable core;
the distance between the other ends of the two first expansion pieces of the middle expansion piece close to the center of the cable core is larger than the distance between the other ends of the two first limiting parts of the middle expansion piece adjacent to the middle expansion piece far from the center of the cable core;
the terminal expansion piece is positioned in the first accommodating groove of the middle expansion piece at the outermost side, at least one loose tube is arranged in the terminal expansion piece, and at least one optical fiber is arranged in the loose tube.
The expandable optical fiber ribbon cable described above is characterized in that: the end expanding piece comprises two first protective layers, two second protective layers and two third protective layers, one ends of the two first protective layers are connected, an included angle between the two first protective layers is 120 degrees, the other ends of the two first protective layers are respectively connected with one end of a corresponding second protective layer, an included angle between the second protective layer and the corresponding third protective layer is 60 degrees, the other ends of the two second protective layers are respectively connected with one end of a corresponding third protective layer, an included angle between the third protective layer and the corresponding second protective layer is 60 degrees, an inlet and an outlet are formed between the other ends of the third protective layers and the corresponding first protective layers, an accommodating cavity is formed between the first protective layers and the corresponding second protective layers and between the third protective layers, and the loose tube is located in the accommodating cavity to form a telescopic groove between the two third protective layers.
The expandable optical fiber ribbon cable described above is characterized in that: each terminal expansion piece is further inserted with a fixing part, each fixing part is composed of a fixing part main body and an inserting piece, one end of each inserting piece is connected with the fixing part main body, the other end of each inserting piece is inserted into a telescopic groove of the corresponding terminal expansion piece, the other end of each inserting piece abuts against an included angle between two first protection layers of the corresponding terminal expansion piece, the inserting piece is attached to the two first protection layers of the corresponding terminal expansion piece, and the fixing part main body is attached to the corresponding second limiting part, the first limiting part and the second protection layer.
The expandable optical fiber ribbon cable described above is characterized in that: all the second limiting parts and the fixing part main bodies form a regular hexagon.
The expandable optical fiber ribbon cable described above is characterized in that: the middle expansion piece is also provided with two fourth supporting blocks, one ends of the two fourth supporting blocks are respectively connected with the other ends of the two first expansion pieces, the two first limiting parts and the two fourth supporting blocks are respectively positioned at two sides of the corresponding first expansion pieces, the fourth supporting blocks support the corresponding supporting plates, the optical fiber belts are positioned among the fourth supporting blocks of the middle expansion piece, the corresponding first expansion pieces and the corresponding supporting plates, and the optical fiber belts are positioned at two sides of the third supporting blocks of the middle expansion piece adjacent to the framework;
in the two adjacent middle expansion pieces, the optical fiber belts are positioned between the fourth support blocks of the middle expansion pieces far from the center of the cable core, the corresponding first expansion pieces and the corresponding first expansion pieces of the middle expansion pieces close to the center of the cable core, wherein the two sides of the third support blocks of the middle expansion pieces far from the center of the cable core are positioned on the optical fiber belts.
The expandable optical fiber ribbon cable described above is characterized in that: the terminal expansion piece is further provided with two second supporting blocks and a first supporting block, one ends of the two second supporting blocks are respectively connected with the other ends of the corresponding first protective layers, the two second protective layers and the two second supporting blocks are located at two sides of the corresponding first protective layers, the second supporting blocks are propped against the first expansion pieces of the middle expansion piece at the outermost side, the first supporting blocks are located at the outer sides of the included angle of the connecting part of the two first protective layers, the first supporting blocks are propped against the included angle between the two first expansion pieces of the middle expansion piece at the outermost side, the first supporting blocks are respectively attached to the two first expansion pieces of the middle expansion piece at the outermost side, and an optical fiber ribbon is arranged between the second supporting blocks, the corresponding first protective layers and the first expansion pieces of the middle expansion piece at the outermost side.
The expandable optical fiber ribbon cable described above is characterized in that: the optical fiber ribbon is formed by combining at least two optical fibers.
The expandable optical fiber ribbon cable described above is characterized in that: the optical fiber is a multimode optical fiber or a single mode optical fiber.
The expandable optical fiber ribbon cable described above is characterized in that: the outer protective layer material is high-density polyethylene or medium-density polyethylene or low-density polyethylene.
The expandable optical fiber ribbon cable described above is characterized in that: the framework is made of high-density polyethylene.
The expandable optical fiber ribbon cable described above is characterized in that: the fixing part is made of polypropylene.
The expandable optical fiber ribbon cable described above is characterized in that: the material of the middle expansion piece is polybutylene terephthalate or modified polypropylene.
The expandable optical fiber ribbon cable described above is characterized in that: the material of the terminal extension piece is polybutylene terephthalate or modified polypropylene.
The expandable optical fiber ribbon cable described above is characterized in that: the loose tube is made of polybutylene terephthalate or modified polypropylene.
The application has the following beneficial effects:
1. according to the requirement, the middle expansion pieces can be expanded and nested layer by layer, and the optical fiber belts are arranged between the two adjacent middle expansion pieces, so that the number of optical fibers in the optical cable can be expanded.
2. The middle expansion piece positioned outside has the function of limiting and fixing the middle expansion piece positioned inside.
3. The middle expansion piece positioned outside has the function of limiting and fixing the end expansion piece positioned inside.
4. The supporting plate of skeleton has arrived the effect of supporting cable core structure, and the second spacing part of skeleton has spacing fixed effect to inside middle extension.
5. The terminal extension piece is spliced with the corresponding fixing part, so that the deformation of the terminal extension piece is limited, the first limiting part of the outer layer-by-layer middle extension piece is limited layer by layer, the cable core structure is more stable, materials such as yarn binding are not needed, and meanwhile, the terminal extension piece is positioned outside the subunit and better protects the subunit together with the framework.
6. When the optical fiber ribbon is taken out, the inner optical fiber ribbon can be taken out only by separating the middle expansion piece by bare hands, the middle expansion piece is not required to be broken and disassembled by a cutter and the like, the optical fiber ribbon is convenient and quick, and the middle expansion piece can be repeatedly utilized, so that the optical fiber ribbon is environment-friendly and the cost is saved.
7. The holding cavity of terminal extension piece is open structure, and loose tube can take out through import and export and expansion tank, need not to break to tear open terminal extension piece such as cutter, convenient and fast, and terminal extension piece can reuse, environmental protection and save the cost.
8. When the optical cable receives pressure, not only there is the support of backing plate, and the third supporting shoe of every intermediate expansion piece and the first supporting shoe of terminal expansion piece are located same straight line simultaneously, can make the center of skeleton to the pressure conduction through the layer upon layer conduction of third supporting shoe and first supporting shoe, reduce the influence of pressure to the optical fiber ribbon and the optic fibre in the subunit.
Drawings
Fig. 1 is a schematic perspective view of a section of embodiment 1.
Fig. 2 is a schematic structural view of the end face of embodiment 1.
Fig. 3 is a schematic perspective view of a section of the skeleton of embodiment 1.
Fig. 4 is a schematic structural view of an end face of the skeleton of example 1.
Fig. 5 is a schematic perspective view of a section of the intermediate expansion member of embodiment 1.
Fig. 6 is a schematic structural view of an end face of the intermediate expansion member of embodiment 1.
Fig. 7 is a schematic perspective view of a section of the end extension member of embodiment 1.
Fig. 8 is a schematic structural view of an end face of the end extension of embodiment 1.
Fig. 9 is a schematic structural view of an end face of the fixing member of embodiment 1.
Fig. 10 is a schematic structural view of the end face of embodiment 2.
Fig. 11 is a schematic structural view of an end face of the intermediate expansion member of embodiment 2.
Fig. 12 is a schematic structural view of the end face of embodiment 3.
Fig. 13 is a schematic structural view of an end face of the end extension of embodiment 3.
In the figure: 1. outer jacket, 2. Securing member, 21. Securing member body, 22. Plug, 3. End extension, 31. First protective layer, 32. Second protective layer, 33. Third protective layer, 34. Receiving cavity, 35. Telescoping slot, 36. Access, 37. First support block, 38. Second support block, 4. Loose tube, 5. Optical fiber, 6. Intermediate extension, 61. First extension piece, 62. First stop member, 63. First receiving slot, 64. Third support block, 65. Fourth support block, 7. Optical fiber ribbon, 8. Backbone, 81. Second stop member, 82. Support plate, 83. Second receiving slot.
Detailed Description
Example 1
As shown in fig. 1 to 9, an expandable optical fiber ribbon cable has an outer sheath 1 and a skeleton 8, wherein the outer sheath 1 is located outside the skeleton 8, and is characterized in that: the skeleton 8 is constituted by three support plates 82;
in the same cross section, one end of each of the three support plates 82 is connected at one position, the included angle between every two adjacent support plates 82 is 120 degrees, two sides of the other end of each support plate 82 are respectively provided with a second limiting part 81, the included angle between each second limiting part 81 and the corresponding support plate 82 is 60 degrees, and a second accommodating groove 83 is formed between every two adjacent support plates 82;
each second accommodating groove 83 is internally provided with a subunit, each subunit is composed of two middle expansion pieces 6 and one tail end expansion piece 3, each middle expansion piece 6 is composed of two first expansion pieces 61, two first limiting parts 62 and one third supporting block 64, one ends of the two first expansion pieces 61 are connected, an included angle between the two first expansion pieces 61 is 120 degrees, a first accommodating groove 63 is formed between the two first expansion pieces 61, one ends of the two first limiting parts 62 are respectively connected with the other ends of the corresponding first expansion pieces 61, an included angle between the first limiting parts 62 and the corresponding first expansion pieces 61 is 60 degrees, the two first limiting parts 62 are positioned on one side of the first accommodating groove 63, and a third supporting block 64 is arranged outside the included angle at the joint of the two first expansion pieces 61;
one middle expansion piece 6 is positioned in the corresponding second accommodating groove 83, the third supporting block 64 of one middle expansion piece 6 butts against the included angle between the corresponding two supporting plates 82, and the third supporting block 64 of one middle expansion piece 6 is attached to the corresponding two supporting plates 82;
two sides of the third supporting block 64 of one middle expansion piece 6, a fiber ribbon 7 is arranged between the first expansion piece 61 of one middle expansion piece 6 and the corresponding supporting plate 82 and the second limiting part 81;
the other middle expansion piece 6 is positioned in the first accommodating groove 63 of the other middle expansion piece 6, the third supporting block 64 of the other middle expansion piece 6 butts against the included angle between the two first expansion pieces 61 of the one middle expansion piece 6, and the third supporting block 64 of the other middle expansion piece 6 is respectively attached to the two first expansion pieces 61 of the one middle expansion piece 6;
the optical fiber ribbon 7 is arranged between the first expansion sheet 61 of the other middle expansion piece 6 and the corresponding first expansion sheet 61 and the first limiting component 62 of the one middle expansion piece 6 at two sides of the third supporting block 64 of the other middle expansion piece 6;
the distance between the other ends of the two first expansion pieces 61 of the other intermediate expansion piece 6 is greater than the distance between the other ends of the two first limit parts 62 of the one intermediate expansion piece 6;
the end expanding piece 3 is located in the first accommodating groove 63 of the other middle expanding piece 6, the end expanding piece 3 is composed of two first protection layers 31, two second protection layers 32 and two third protection layers 33, one ends of the two first protection layers 31 are connected, an included angle between the two first protection layers 31 is 120 degrees, the other ends of the two first protection layers 31 are respectively connected with one end of a corresponding second protection layer 32, an included angle between the second protection layer 32 and the corresponding third protection layer 33 is 60 degrees, the other ends of the two second protection layers 32 are respectively connected with one end of a corresponding third protection layer 33, an included angle between the third protection layer 33 and the corresponding second protection layer 32 is 60 degrees, an inlet and outlet 36 is arranged between the other end of the third protection layer 33 and the corresponding first protection layer 31, an accommodating cavity 34 is formed between the first protection layer 31 and the corresponding second protection layer 32 and the third protection layer 33, a loose tube 4 is arranged in the accommodating cavity 34, at least one 5 is arranged in the loose tube 4, and a groove 35 is formed between the two third protection layers 33;
each end extension piece 3 is further inserted with a fixing component 2, the fixing component 2 is composed of a fixing component main body 21 and an inserting piece 22, one end of the inserting piece 22 is connected with the fixing component main body 21, the other end of the inserting piece 22 is inserted into a telescopic groove 35 of the corresponding end extension piece 3, the other end of the inserting piece 22 abuts against an included angle between two first protection layers 31 of the corresponding end extension piece 3, the inserting piece 22 is attached to two first protection layers 31 of the corresponding end extension piece 3, the fixing component main body 21 is attached to a corresponding second limiting component 81, a corresponding first limiting component 62 and a corresponding second protection layer 32, and all the second limiting components 81 and the fixing component main body 21 form a regular hexagon.
Example 2
Referring to fig. 10, 11, and to fig. 3, 4, 7, 8 and 9, an expandable optical fiber ribbon cable having an outer jacket 1 and a skeleton 8, the outer jacket 1 being located outside the skeleton 8, characterized in that: the skeleton 8 is constituted by three support plates 82;
in the same cross section, one end of each of the three support plates 82 is connected at one position, the included angle between every two adjacent support plates 82 is 120 degrees, two sides of the other end of each support plate 82 are respectively provided with a second limiting part 81, the included angle between each second limiting part 81 and the corresponding support plate 82 is 60 degrees, and a second accommodating groove 83 is formed between every two adjacent support plates 82;
each second accommodating groove 83 is internally provided with a subunit, each subunit is composed of two middle expansion pieces 6 and one tail end expansion piece 3, each middle expansion piece 6 is composed of two first expansion pieces 61, two first limiting parts 62, two fourth supporting blocks 65 and one third supporting block 64, one ends of the two first expansion pieces 61 are connected, an included angle between the two first expansion pieces 61 is 120 degrees, one first accommodating groove 63 is formed between the two first expansion pieces 61, one ends of the two first limiting parts 62 are respectively connected with the other ends of the corresponding first expansion pieces 61, an included angle between the first limiting parts 62 and the corresponding first expansion pieces 61 is 60 degrees, the two first limiting parts 62 are positioned on one side of the first accommodating grooves 63, one ends of the two fourth supporting blocks 65 are respectively connected with the other ends of the two first expansion pieces 61, the two first limiting parts 62 and the two fourth supporting blocks 65 are respectively positioned on two sides of the corresponding first expansion pieces 61, and one third supporting block 64 is arranged at the connecting position of the two first expansion pieces 61;
one middle expansion piece 6 is positioned in the corresponding second accommodating groove 83, the third supporting block 64 of one middle expansion piece 6 is propped against the included angle between the corresponding two supporting plates 82, the third supporting block 64 of one middle expansion piece 6 is attached to the corresponding two supporting plates 82, and the fourth supporting block 65 of one middle expansion piece 6 is propped against the corresponding supporting plate 82;
the optical fiber ribbon 7 is arranged between the fourth supporting block 65 of the middle expanding piece 6, the corresponding first expanding piece 61, the corresponding supporting plate 82 and the second limiting component 81 on two sides of the third supporting block 64 of the middle expanding piece 6;
the other middle expansion piece 6 is positioned in the first accommodating groove 63 of the one middle expansion piece 6, the third supporting block 64 of the other middle expansion piece 6 is propped against the included angle between the two first expansion pieces 61 of the one middle expansion piece 6, the third supporting block 64 of the other middle expansion piece 6 is respectively attached to the two first expansion pieces 61 of the one middle expansion piece 6, and the fourth supporting block 65 of the other middle expansion piece 6 is propped against the first expansion piece 61 of the one middle expansion piece 6;
the third supporting blocks 64 of the other intermediate expansion member 6 are provided on both sides thereof, and an optical fiber ribbon 7 is provided between the fourth supporting block 65 of the other intermediate expansion member 6, the corresponding first expansion piece 61 and the corresponding first expansion piece 61 of one intermediate expansion member 6;
the distance between the other ends of the two first expansion pieces 61 of the other intermediate expansion piece 6 is greater than the distance between the other ends of the two first limit parts 62 of the one intermediate expansion piece 6;
the end expanding piece 3 is located in the first accommodating groove 63 of the other middle expanding piece 6, the end expanding piece 3 is composed of two first protection layers 31, two second protection layers 32 and two third protection layers 33, one ends of the two first protection layers 31 are connected, an included angle between the two first protection layers 31 is 120 degrees, the other ends of the two first protection layers 31 are respectively connected with one end of a corresponding second protection layer 32, an included angle between the second protection layer 32 and the corresponding third protection layer 33 is 60 degrees, the other ends of the two second protection layers 32 are respectively connected with one end of a corresponding third protection layer 33, an included angle between the third protection layer 33 and the corresponding second protection layer 32 is 60 degrees, an inlet and outlet 36 is arranged between the other end of the third protection layer 33 and the corresponding first protection layer 31, an accommodating cavity 34 is formed between the first protection layer 31 and the corresponding second protection layer 32 and the third protection layer 33, a loose tube 4 is arranged in the accommodating cavity 34, at least one 5 is arranged in the loose tube 4, and a groove 35 is formed between the two third protection layers 33;
each end extension piece 3 is further inserted with a fixing component 2, the fixing component 2 is composed of a fixing component main body 21 and an inserting piece 22, one end of the inserting piece 22 is connected with the fixing component main body 21, the other end of the inserting piece 22 is inserted into a telescopic groove 35 of the corresponding end extension piece 3, the other end of the inserting piece 22 abuts against an included angle between two first protection layers 31 of the corresponding end extension piece 3, the inserting piece 22 is attached to two first protection layers 31 of the corresponding end extension piece 3, the fixing component main body 21 is attached to a corresponding second limiting component 81, a corresponding first limiting component 62 and a corresponding second protection layer 32, and all the second limiting components 81 and the fixing component main body 21 form a regular hexagon.
Example 3
Referring to fig. 12, 13, and to fig. 3, 4, 7, 8, 9 and 11, an expandable optical fiber ribbon cable having an outer jacket 1 and a skeleton 8, the outer jacket 1 being located outside the skeleton 8, characterized in that: the skeleton 8 is constituted by three support plates 82;
in the same cross section, one end of each of the three support plates 82 is connected at one position, the included angle between every two adjacent support plates 82 is 120 degrees, two sides of the other end of each support plate 82 are respectively provided with a second limiting part 81, the included angle between each second limiting part 81 and the corresponding support plate 82 is 60 degrees, and a second accommodating groove 83 is formed between every two adjacent support plates 82;
each second accommodating groove 83 is internally provided with a subunit, each subunit is composed of two middle expansion pieces 6 and one tail end expansion piece 3, each middle expansion piece 6 is composed of two first expansion pieces 61, two first limiting parts 62, two fourth supporting blocks 65 and one third supporting block 64, one ends of the two first expansion pieces 61 are connected, an included angle between the two first expansion pieces 61 is 120 degrees, one first accommodating groove 63 is formed between the two first expansion pieces 61, one ends of the two first limiting parts 62 are respectively connected with the other ends of the corresponding first expansion pieces 61, an included angle between the first limiting parts 62 and the corresponding first expansion pieces 61 is 60 degrees, the two first limiting parts 62 are positioned on one side of the first accommodating grooves 63, one ends of the two fourth supporting blocks 65 are respectively connected with the other ends of the two first expansion pieces 61, the two first limiting parts 62 and the two fourth supporting blocks 65 are respectively positioned on two sides of the corresponding first expansion pieces 61, and one third supporting block 64 is arranged at the connecting position of the two first expansion pieces 61;
one middle expansion piece 6 is positioned in the corresponding second accommodating groove 83, the third supporting block 64 of one middle expansion piece 6 is propped against the included angle between the corresponding two supporting plates 82, the third supporting block 64 of one middle expansion piece 6 is attached to the corresponding two supporting plates 82, and the fourth supporting block 65 of one middle expansion piece 6 is propped against the corresponding supporting plate 82;
the optical fiber ribbon 7 is arranged between the fourth supporting block 65 of the middle expanding piece 6, the corresponding first expanding piece 61, the corresponding supporting plate 82 and the second limiting component 81 on two sides of the third supporting block 64 of the middle expanding piece 6;
the other middle expansion piece 6 is positioned in the first accommodating groove 63 of the one middle expansion piece 6, the third supporting block 64 of the other middle expansion piece 6 is propped against the included angle between the two first expansion pieces 61 of the one middle expansion piece 6, the third supporting block 64 of the other middle expansion piece 6 is respectively attached to the two first expansion pieces 61 of the one middle expansion piece 6, and the fourth supporting block 65 of the other middle expansion piece 6 is propped against the first expansion piece 61 of the one middle expansion piece 6;
the third supporting blocks 64 of the other intermediate expansion member 6 are provided on both sides thereof, and an optical fiber ribbon 7 is provided between the fourth supporting block 65 of the other intermediate expansion member 6, the corresponding first expansion piece 61 and the corresponding first expansion piece 61 of one intermediate expansion member 6;
the distance between the other ends of the two first expansion pieces 61 of the other intermediate expansion piece 6 is greater than the distance between the other ends of the two first limit parts 62 of the one intermediate expansion piece 6;
the end extension piece 3 is positioned in the first accommodating groove 63 of the other middle extension piece 6, the end extension piece 3 is composed of two first protection layers 31, two second protection layers 32, two third protection layers 33, two second support blocks 38 and one first support block 37, one ends of the two first protection layers 31 are connected, an included angle between the two first protection layers 31 is 120 degrees, the other ends of the two first protection layers 31 are respectively connected with one end of the corresponding one second protection layer 32, an included angle between the second protection layer 32 and the corresponding third protection layer 33 is 60 degrees, one ends of the two second support blocks 38 are respectively connected with the other ends of the corresponding first protection layers 31, the two second protection layers 32 and the two second support blocks 38 are positioned on two sides of the corresponding first protection layers 31, the second supporting block 38 is propped against the first expansion piece 61 of the other middle expansion piece 6, the other ends of the two second protection layers 32 are respectively connected with one end of a corresponding third protection layer 33, the included angle between the third protection layer 33 and the corresponding second protection layer 32 is 60 degrees, an inlet and outlet 36 is arranged between the other end of the third protection layer 33 and the corresponding first protection layer 31, a containing cavity 34 is formed between the first protection layer 31 and the corresponding second protection layer 32 and the third protection layer 33, a loose tube 4 is arranged in the containing cavity 34, at least one optical fiber 5 is arranged in the loose tube 4, a telescopic groove 35 is formed between the two third protection layers 33, the first supporting block 37 is positioned outside the included angle between the two first expansion pieces 61 of the other middle expansion piece 6, the first supporting block 37 is propped against the included angle between the two first expansion pieces 61 of the other middle expansion piece 6, and the first supporting block 37 is attached to two first expansion pieces 61 of the other intermediate expansion piece 6;
two sides of the first supporting block 37, the second supporting block 38, the corresponding first protective layer 31 and the corresponding first expansion piece 61 of the other middle expansion piece 6 are provided with an optical fiber ribbon 7;
each end extension piece 3 is further inserted with a fixing component 2, the fixing component 2 is composed of a fixing component main body 21 and an inserting piece 22, one end of the inserting piece 22 is connected with the fixing component main body 21, the other end of the inserting piece 22 is inserted into a telescopic groove 35 of the corresponding end extension piece 3, the other end of the inserting piece 22 abuts against an included angle between two first protection layers 31 of the corresponding end extension piece 3, the inserting piece 22 is attached to two first protection layers 31 of the corresponding end extension piece 3, the fixing component main body 21 is attached to a corresponding second limiting component 81, a corresponding first limiting component 62 and a corresponding second protection layer 32, and all the second limiting components 81 and the fixing component main body 21 form a regular hexagon.
An expandable optical fiber ribbon cable described herein, characterized in that: the optical fiber ribbon 7 is formed by combining at least two optical fibers 5.
An expandable optical fiber ribbon cable described herein, characterized in that: the optical fiber 5 is a multimode optical fiber or a single mode optical fiber.
An expandable optical fiber ribbon cable described herein, characterized in that: the material of the outer protective layer 1 is high-density polyethylene or medium-density polyethylene or low-density polyethylene.
An expandable optical fiber ribbon cable described herein, characterized in that: the material of the framework 8 is high-density polyethylene.
An expandable optical fiber ribbon cable described herein, characterized in that: the material of the fixing part 2 is polypropylene.
An expandable optical fiber ribbon cable described herein, characterized in that: the material of the middle expansion piece 6 is polybutylene terephthalate or modified polypropylene.
An expandable optical fiber ribbon cable described herein, characterized in that: the material of the terminal extension piece 3 is polybutylene terephthalate or modified polypropylene.
An expandable optical fiber ribbon cable described herein, characterized in that: the loose tube 4 is made of polybutylene terephthalate or modified polypropylene.
Furthermore, the loose tube 4 and the optical fiber 5 inside the loose tube 4 can be replaced by an electric unit, so that photoelectric co-transmission is realized.
The application has the following beneficial effects:
1. the intermediate expansion pieces 6 can be expanded and nested layer by layer according to the requirement, and the optical fiber ribbons 7 are arranged between two adjacent intermediate expansion pieces 6, so that the number of optical fibers in the optical cable can be expanded.
2. The intermediate expansion piece 6 located outside has a limiting and fixing effect on the intermediate expansion piece 6 located inside.
3. The intermediate expansion piece 6 located on the outside has a limiting and fixing effect on the end expansion piece 3 located on the inside.
4. The supporting plate 82 of the skeleton 8 plays a role in supporting the cable core structure, and the second limiting member 81 of the skeleton 8 has a role in limiting and fixing the inner intermediate expansion member 6.
5. The terminal extension piece 3 is spliced with the corresponding fixing part 2, so that the deformation of the terminal extension piece 3 is limited, the cable core structure is more stable by limiting the first limiting part 62 of the outer layer-by-layer middle extension piece 6 layer by layer, materials such as yarn binding are not needed, and meanwhile, the terminal extension piece 3 is positioned outside the subunit and better protects the subunit together with the framework 8.
6. When the optical fiber ribbon is taken out, the inner optical fiber ribbon 7 can be taken out only by separating the middle expansion piece 6 by bare hands, the middle expansion piece 6 is broken and detached without a cutter and the like, the optical fiber ribbon is convenient and quick, and the middle expansion piece 6 can be repeatedly utilized, so that the optical fiber ribbon is environment-friendly and the cost is saved.
7. The accommodating cavity 34 of the tail end expansion piece 3 is of an open structure, the loose tube 4 can be taken out through the inlet and outlet 36 and the telescopic groove 35, a cutter and the like are not needed to break and disassemble the tail end expansion piece 3, the tail end expansion piece 3 can be reused, and the device is environment-friendly and saves cost.
8. When the optical cable is under pressure, not only is the supporting plate 82 supported, but also the third supporting block 64 of each intermediate expansion piece 6 and the first supporting block 37 of the end expansion piece 3 are positioned on the same straight line, and the pressure can be conducted to the center of the framework 8 through layer-by-layer conduction of the third supporting block 64 and the first supporting block 37, so that the influence of the pressure on the optical fiber ribbon and the optical fibers in the sub-units is reduced.
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 (10)
1. An expandable optical fiber ribbon cable having an outer sheath (1) and a skeleton (8), the outer sheath (1) being located outside the skeleton (8), characterized in that: the framework (8) is composed of three support plates (82); in the same cross section, one end of each of the three support plates (82) is connected at one position, the included angle between every two adjacent support plates (82) is 120 degrees, two sides of the other end of each support plate (82) are respectively provided with a second limiting part (81), the included angle between each second limiting part (81) and the corresponding support plate (82) is 60 degrees, and a second accommodating groove (83) is formed between every two adjacent support plates (82); each second accommodating groove (83) is internally provided with a subunit, each subunit is composed of at least one middle expansion piece (6) and one tail end expansion piece (3), each middle expansion piece (6) is composed of two first expansion pieces (61), two first limiting parts (62) and a third supporting block (64), one ends of the two first expansion pieces (61) are connected, an included angle between the two first expansion pieces (61) is 120 degrees, a first accommodating groove (63) is formed between the two first expansion pieces (61), one ends of the two first limiting parts (62) are respectively connected with the other ends of the corresponding first expansion pieces (61), the included angle between the first limiting parts (62) and the corresponding first expansion pieces (61) is 60 degrees, the two first limiting parts (62) are positioned on one side of the first accommodating groove (63), and a third supporting block (64) is arranged outside the included angle at the joint of the two first expansion pieces (61); when the optical fiber ribbon is provided with the middle expansion piece (6), the middle expansion piece (6) is positioned in the corresponding second accommodating groove (83), the third supporting block (64) of the middle expansion piece (6) is propped against the included angle between the corresponding two supporting plates (82), the third supporting block (64) of the middle expansion piece (6) is attached to the corresponding two supporting plates (82), two sides of the third supporting block (64) of the middle expansion piece (6), and at least one optical fiber ribbon (7) is arranged between the first expansion piece (61) of the middle expansion piece (6) and the corresponding supporting plates (82) and the second limiting part (81); when the optical fiber ribbon is provided with a plurality of middle expansion pieces (6), the third support blocks (64) of the middle expansion pieces (6) adjacent to the framework (8) prop against the included angle between the two corresponding support plates (82), the third support blocks (64) of the middle expansion pieces (6) adjacent to the framework (8) are attached to the two corresponding support plates (82), two sides of the third support blocks (64) of the middle expansion pieces (6) adjacent to the framework (8) are provided with at least one optical fiber ribbon (7) between the first expansion piece (61) of the middle expansion pieces (6) adjacent to the framework (8) and the corresponding support plates (82) and the second limiting parts (81); the middle expansion piece (6) far away from the center of the cable core is embedded in the second accommodating groove (83) of the adjacent middle expansion piece (6) near the center of the cable core, the third support block (64) of the middle expansion piece (6) far away from the center of the cable core is propped against the included angle between the two first expansion pieces (61) of the adjacent middle expansion piece (6) near the center of the cable core, the third support block (64) of the middle expansion piece (6) far away from the center of the cable core is respectively attached to the two first expansion pieces (61) of the middle expansion piece (6) near the center of the cable core, and a ribbon (7) is arranged between the first expansion piece (61) of the middle expansion piece (6) far away from the center of the cable core and the corresponding first expansion piece (61) and the first limiting component (62) of the adjacent middle expansion piece (6) near the center of the cable core; the distance between the other ends of the two first expansion pieces (61) of the middle expansion piece (6) close to the center of the cable core is larger than the distance between the other ends of the two first limiting parts (62) of the middle expansion piece (6) which are adjacent to the middle expansion piece and far from the center of the cable core; the end expansion piece (3) is positioned in a first accommodating groove (63) of the middle expansion piece (6) at the outermost side, at least one loose tube (4) is arranged in the end expansion piece (3), and at least one optical fiber (5) is arranged in the loose tube (4).
2. An expandable optical fiber ribbon cable according to claim 1, wherein: the end expanding piece (3) is composed of two first protection layers (31), two second protection layers (32) and two third protection layers (33), one ends of the two first protection layers (31) are connected, an included angle between the two first protection layers (31) is 120 degrees, the other ends of the two first protection layers (31) are respectively connected with one end of one corresponding second protection layer (32), the included angle between the second protection layer (32) and the corresponding third protection layer (33) is 60 degrees, the other ends of the two second protection layers (32) are respectively connected with one end of one corresponding third protection layer (33), the included angle between the third protection layer (33) and the corresponding second protection layer (32) is 60 degrees, an inlet and outlet (36) is formed between the other end of the third protection layer (33) and the corresponding first protection layer (31), an accommodating cavity (34) is formed between the first protection layer (31) and the corresponding second protection layer (32) and the third protection layer (33), the loose sleeve (4) is located in the accommodating cavity (34), and a telescopic groove (35) is formed between the two third protection layers (33).
3. An expandable optical fiber ribbon cable according to claim 2, wherein: each end extension piece (3) is further inserted with a fixing component (2), the fixing component (2) is composed of a fixing component main body (21) and an inserting piece (22), one end of the inserting piece (22) is connected with the fixing component main body (21), the other end of the inserting piece (22) is inserted into a telescopic groove (35) of the corresponding end extension piece (3), the other end of the inserting piece (22) abuts against an included angle between two first protection layers (31) of the corresponding end extension piece (3), the inserting piece (22) is attached to two first protection layers (31) of the corresponding end extension piece (3), and the fixing component main body (21) is attached to a corresponding second limiting component (81), a corresponding first limiting component (62) and a corresponding second protection layer (32).
4. A scalable fiber optic ribbon cable according to claim 3, wherein: all the second limiting parts (81) and the fixing part main body (21) form a regular hexagon.
5. The expandable optical fiber ribbon cable of claim 4, wherein: the middle expanding piece (6) is further provided with two fourth supporting blocks (65), one ends of the two fourth supporting blocks (65) are respectively connected with the other ends of the two first expanding pieces (61), the two first limiting components (62) and the two fourth supporting blocks (65) are respectively located at two sides of the corresponding first expanding pieces (61), the fourth supporting blocks (65) are propped against the corresponding supporting plates (82), two sides of the third supporting blocks (64) of the middle expanding piece (6) adjacent to the framework (8), and the optical fiber belts (7) are located between the fourth supporting blocks (65) of the middle expanding piece (6), the corresponding first expanding pieces (61) and the corresponding supporting plates (82); in two adjacent intermediate expansion pieces (6), the optical fiber ribbon is positioned between the fourth support block (65) of the intermediate expansion piece (6) far from the center of the cable core, the corresponding first expansion piece (61) and the corresponding first expansion piece (61) of the intermediate expansion piece (6) near the center of the cable core, at both sides of the third support block (64) of the intermediate expansion piece (6) far from the center of the cable core.
6. An expandable optical fiber ribbon cable according to claim 5, wherein: the end expanding piece (3) is further provided with two second supporting blocks (38) and a first supporting block (37), one end of each second supporting block (38) is connected with the other end of the corresponding first protective layer (31), the two second protective layers (32) and the two second supporting blocks (38) are located on two sides of the corresponding first protective layer (31), the second supporting blocks (38) are propped against the first expanding piece (61) of the middle expanding piece (6) on the outermost side, the first supporting blocks (37) are located on the outer side of an included angle of a connecting position of the two first protective layers (31), the first supporting blocks (37) are propped against an included angle between the two first expanding pieces (61) of the corresponding middle expanding piece (6) on the outermost side, the first supporting blocks (37) are attached to the two first expanding pieces (61) of the middle expanding piece (6) on the outermost side, and the second supporting blocks (38), the corresponding first protective layer (31) and the first expanding piece (61) of the middle expanding piece (6) on the outermost side are provided with a fiber ribbon (7).
7. The expandable optical fiber ribbon cable of claim 6, wherein: the optical fiber ribbon (7) is formed by combining at least two optical fibers (5).
8. The expandable optical fiber ribbon cable of claim 7, wherein: the framework (8) is made of high-density polyethylene.
9. The expandable optical fiber ribbon cable of claim 8, wherein: the material of the middle expansion piece (6) is polybutylene terephthalate or modified polypropylene.
10. The expandable optical fiber ribbon cable of claim 9, wherein: the material of the terminal extension piece (3) is polybutylene terephthalate or modified polypropylene.
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| CN117826352B (en) | 2024-04-30 |
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Effective date of registration: 20240527 Address after: 710000 No. 18, information Avenue, new industrial park, high tech Industrial Development Zone, Xi'an, Shaanxi Province Patentee after: FURUKAWA ELECTRIC XI'AN OPTICAL COMMUNICATION Co.,Ltd. Country or region after: China Address before: 215500 No.40 Suzhou Road, high tech Industrial Park, Changshu Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: CHANGSHU BAILIAN PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Country or region before: China |