CN116577892B - Butterfly-shaped lead-in optical cable with embedded structure - Google Patents
Butterfly-shaped lead-in optical cable with embedded structure Download PDFInfo
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- CN116577892B CN116577892B CN202310862161.0A CN202310862161A CN116577892B CN 116577892 B CN116577892 B CN 116577892B CN 202310862161 A CN202310862161 A CN 202310862161A CN 116577892 B CN116577892 B CN 116577892B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 53
- 239000011241 protective layer Substances 0.000 claims abstract description 97
- 230000003014 reinforcing effect Effects 0.000 claims description 190
- 239000010410 layer Substances 0.000 claims description 106
- 238000004891 communication Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 description 133
- 239000013307 optical fiber Substances 0.000 description 22
- 230000002787 reinforcement Effects 0.000 description 14
- 238000005728 strengthening Methods 0.000 description 8
- 239000004020 conductor Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 229920001179 medium density polyethylene Polymers 0.000 description 4
- 239000004701 medium-density polyethylene Substances 0.000 description 4
- 240000007817 Olea europaea Species 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polybutylene terephthalate Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
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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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- 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
- G02B6/441—Optical cables built up from sub-bundles
-
- 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
- G02B6/443—Protective covering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Abstract
The invention belongs to the field of optical cables, and particularly relates to an embedded butterfly-shaped lead-in optical cable, which is provided with an outer protective layer and a cable core, and is characterized in that: the cable core is composed of four reinforced limiting parts and twelve subunits, the reinforced limiting parts are provided with four vertex angles in the same cross section, a section of arc which is concave towards the middle is formed between every two adjacent vertex angles, the centers of the four reinforced limiting parts are positioned on the four vertex angles of the same large square, each arc of each reinforced limiting part is attached with one subunit, the two adjacent reinforced limiting parts share one subunit, and butterfly units are arranged in the subunits.
Description
Technical Field
The invention belongs to the field of optical cables, and particularly relates to an embedded butterfly-shaped lead-in optical cable.
Background
The butterfly-shaped lead-in optical cable is used for the last kilometer of fiber to the home, and is widely applied to application environments such as intelligent buildings, digital communities, campus networks, local area networks and the like due to the advantages of small outer diameter, light weight, low cost, good flexibility and bending performance, convenient laying and the like.
In the prior art, CN115097588A discloses a multi-unit butterfly-shaped lead-in optical cable which is provided with n identical butterfly-shaped units and n identical clamping components, wherein n is more than or equal to 3, n is an integer, and the number of the butterfly-shaped units is equal to that of the clamping components; the method is characterized in that: the butterfly unit consists of an optical fiber, two reinforcing members positioned on the upper side and the lower side of the optical fiber and a unit sheath, wherein the optical fiber and the reinforcing members are covered by the unit sheath, the upper surface of the unit sheath is provided with a first concave embedding opening, and the lower surface of the unit sheath is provided with a second concave embedding opening; the clamping component is composed of a clamping body; when the butterfly-shaped unit is in an assembled state, the outer edges of all butterfly-shaped units are arranged outside, the outer edges of all butterfly-shaped units are arranged on the same cylindrical surface, adjacent butterfly-shaped units are connected through a clamping component, one end of the clamping component between the adjacent butterfly-shaped units is embedded into a second embedding opening of one butterfly-shaped unit, the other end of the clamping component between the adjacent butterfly-shaped units is embedded into a first embedding opening of the other butterfly-shaped unit, and an inner space surrounded by all butterfly-shaped units and the clamping component is a central cavity.
The above prior art, while enabling the scalability of butterfly drop cables, has the following drawbacks: when there is not reinforcement in the central chamber, structural stability is relatively poor, and when there is reinforcement or other parts in the central chamber, butterfly unit and reinforcement or other parts in the central chamber are the line contact, and two adjacent butterfly units pass through the block part to be connected, and butterfly unit and block part, and butterfly unit and reinforcement's contact surface is little, causes the compressive capacity of optical cable not strong.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose an embedded butterfly-shaped lead-in optical cable which is realized by adopting the following technical scheme.
An embedded butterfly-shaped lead-in optical cable with an outer sheath and a cable core, wherein the outer sheath is extruded outside the cable core, and the embedded butterfly-shaped lead-in optical cable is characterized in that: the cable core consists of four reinforced limiting parts and twelve subunits, wherein in the same cross section, the reinforced limiting parts are provided with four vertex angles, the four vertex angles are positioned on the four vertex angles of the same small square, one side of the small square is horizontally arranged, a section of arc is formed between two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, the four sections of arc are recessed towards the center of the small square, the arc above the reinforced limiting parts is a first arc section, the arc below the reinforced limiting parts is a second arc section, the arc on the left side of the reinforced limiting parts is a third arc section, and the arc on the right side of the reinforced limiting parts is a fourth arc section;
the subunit consists of a butterfly unit and a butterfly unit protection layer, a butterfly unit accommodating cavity is formed in the butterfly unit protection layer, the butterfly unit is positioned in the butterfly unit accommodating cavity, the butterfly unit protection layer consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, and two ends of one fifth arc section are fixedly connected with two ends of the other fifth arc section;
The centers of the four reinforced limiting parts are positioned on four vertexes of the same large square, and one side of the large square is horizontally arranged;
a subunit is arranged above the reinforcing and limiting component at the upper left part, the connecting line of two intersection points of the two fifth arc sections of the butterfly unit protective layer of the subunit is horizontally arranged, and the first arc section of the reinforcing and limiting component at the upper left part is attached to the fifth arc section below the butterfly unit protective layer of the subunit;
a subunit is arranged between the upper left reinforcing and limiting part and the lower left reinforcing and limiting part, the connecting line of two intersection points of the two fifth arc sections of the butterfly unit protective layer of the subunit is horizontally arranged, and the second arc section of the upper left reinforcing and limiting part and the first arc section of the lower left reinforcing and limiting part are respectively attached to the two fifth arc sections of the butterfly unit protective layer of the subunit;
a subunit is arranged below the reinforcing and limiting component at the lower left part, a connecting line of two intersection points of the two fifth arc sections of the butterfly unit protective layer of the subunit is horizontally arranged, and the second arc section of the reinforcing and limiting component at the lower left part is attached to the fifth arc section above the butterfly unit protective layer of the subunit;
a subunit is arranged above the reinforcing and limiting component on the upper right, and a connecting line of two intersection points of the two fifth arc sections of the butterfly unit protective layer of the subunit is horizontally arranged, wherein the first arc section of the reinforcing and limiting component on the upper right is attached to the fifth arc section below the butterfly unit protective layer of the subunit;
A subunit is arranged between the upper right reinforcing and limiting part and the lower right reinforcing and limiting part, the connecting line of two intersection points of the two fifth arc sections of the butterfly unit protective layer of the subunit is horizontally arranged, and the second arc section of the upper right reinforcing and limiting part and the first arc section of the lower right reinforcing and limiting part are respectively attached to the two fifth arc sections of the butterfly unit protective layer of the subunit;
a subunit is arranged below the right lower reinforcing and limiting component, a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer of the subunit is horizontally arranged, and the second arc section of the right lower reinforcing and limiting component is attached to the fifth arc section above the butterfly unit protective layer of the subunit;
a subunit is arranged at the left side of the upper left reinforcing and limiting component, a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer of the subunit is vertically arranged, and the third arc section of the upper left reinforcing and limiting component is attached to the fifth arc section at the right side of the butterfly unit protective layer of the subunit;
a subunit is arranged between the upper left reinforcing and limiting part and the upper right reinforcing and limiting part, a connecting line of two intersection points of two fifth arc sections of the butterfly unit protective layer of the subunit is vertically arranged, and a fourth arc section of the upper left reinforcing and limiting part and the third arc section of the upper right reinforcing and limiting part are respectively attached to the two fifth arc sections of the butterfly unit protective layer of the subunit;
A sub-unit is arranged on the right side of the upper right reinforcing and limiting component, a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer of the sub-unit is vertically arranged, and a fourth arc section of the upper right reinforcing and limiting component is attached to the fifth arc section on the left side of the butterfly unit protective layer of the sub-unit;
a sub-unit is arranged at the left side of the reinforcing and limiting component at the left side, two intersection points of the two sections of the fifth arc sections of the butterfly unit protective layer of the sub-unit are vertically arranged, and the third arc section of the reinforcing and limiting component at the left side is attached to the fifth arc section at the right side of the butterfly unit protective layer of the sub-unit;
a subunit is arranged between the left lower reinforcing and limiting part and the right lower reinforcing and limiting part, two intersection points of the two fifth arc sections of the butterfly unit protective layer of the subunit are vertically arranged, and the fourth arc section of the left lower reinforcing and limiting part and the third arc section of the right lower reinforcing and limiting part are respectively attached to the two fifth arc sections of the butterfly unit protective layer of the subunit;
a sub-unit is arranged on the right side of the right lower reinforcing and limiting component, two intersection points of the two sections of fifth arc sections of the butterfly unit protective layer of the sub-unit are vertically arranged, and the fourth arc section of the right lower reinforcing and limiting component is attached to the fifth arc section on the left side of the butterfly unit protective layer of the sub-unit;
The fifth arc sections of the four butterfly unit protective layers which are adjacent to the same reinforcing limiting component and are not attached to the reinforcing limiting component form a complete cylindrical surface, and a fixing component is arranged between the outer protective layer and the cable core.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the butterfly unit comprises a butterfly protection layer, two reinforcing pieces and a loose tube, wherein the two reinforcing pieces are positioned on two sides of the loose tube, the butterfly protection layer is extruded outside the two reinforcing pieces and the loose tube, at least one optical communication component is arranged in the loose tube, a straight line where a connecting line of the centers of the two reinforcing pieces is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces is a short axis, two intersecting parts of the outer edges of the butterfly protection layer on two sides of the short axis and the outer edge of the butterfly protection layer on two sides of the long axis respectively form a tearing opening for rapidly separating the butterfly protection layer, the loose tube is taken out, and the butterfly protection layers on two sides of the long axis are respectively attached to the inner walls of two sections of fifth arc sections of the corresponding butterfly unit protection layers.
An embedded butterfly-shaped lead-in optical cable with an outer sheath and a cable core, wherein the outer sheath is extruded outside the cable core, and the embedded butterfly-shaped lead-in optical cable is characterized in that: the cable core consists of a reinforcing limiting part and four subunits, wherein the reinforcing limiting part is provided with four vertex angles in the same cross section, the four vertex angles are positioned on the four vertex angles of the same small square, a section of arc is formed between two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, and the four sections of arc are recessed towards the center of the small square;
The subunit consists of a butterfly unit and a butterfly unit protection layer, a butterfly unit accommodating cavity is formed in the butterfly unit protection layer, the butterfly unit is located in the butterfly unit accommodating cavity, the butterfly unit protection layer consists of two sections of fifth arc sections, central angles of the two sections of fifth arc sections are equal, arc diameters of the two sections of fifth arc sections are equal, bending directions of the two sections of fifth arc sections are opposite, two ends of one section of fifth arc section are fixedly connected with two ends of the other section of fifth arc section, four sections of arcs of the reinforcing limiting part are respectively attached to one section of fifth arc section of the butterfly unit protection layer of one subunit, the other section of fifth arc section of the butterfly unit protection layer of the four subunits forms a complete cylindrical surface, and a fixing part is further arranged between the outer protection layer and the cable core.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the butterfly unit comprises a butterfly protection layer, two reinforcing pieces and a loose tube, wherein the two reinforcing pieces are positioned on two sides of the loose tube, the butterfly protection layer is extruded outside the two reinforcing pieces and the loose tube, at least one optical communication component is arranged in the loose tube, a straight line where a connecting line of the centers of the two reinforcing pieces is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces is a short axis, two intersecting parts of the outer edges of the butterfly protection layer on two sides of the short axis and the outer edge of the butterfly protection layer on two sides of the long axis respectively form a tearing opening for rapidly separating the butterfly protection layer, the loose tube is taken out, and the butterfly protection layers on two sides of the long axis are respectively attached to the inner walls of two sections of fifth arc sections of the corresponding butterfly unit protection layers.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the four-section arc of the reinforced limiting part is respectively provided with a first scarf joint component and a second scarf joint component, the first scarf joint component is composed of a first scarf joint strip and a second scarf joint strip, one end of the first scarf joint strip and one end of the second scarf joint strip are respectively and fixedly connected with corresponding arcs on the reinforced limiting part, a first telescopic slot is arranged between the first scarf joint strip and the second scarf joint strip, the distance between the other end of the first scarf joint strip and the other end of the second scarf joint strip is larger than the distance between one end of the first scarf joint strip and one end of the second scarf joint strip, the second scarf joint component is composed of a third scarf joint strip and a fourth scarf joint strip, one end of the third scarf joint strip and one end of the fourth scarf joint strip are respectively and fixedly connected with corresponding arcs on the reinforced limiting part, a second telescopic slot is arranged between the third scarf joint strip and the fourth scarf joint strip, and the distance between the other end of the third scarf joint strip and the other end of the fourth scarf joint strip is larger than the distance between the one end of the third scarf joint strip and the fourth scarf joint strip;
two first dovetail grooves are formed on the outer wall of a fifth arc section of the butterfly unit protective layer attached to the reinforced limiting part, the first scarf joint assembly is in scarf joint with one first dovetail groove, the first scarf joint strip and the second scarf joint strip are attached to two side walls of the first dovetail groove respectively, the second scarf joint assembly is in scarf joint with the other first dovetail groove, and the third scarf joint strip and the fourth scarf joint strip are attached to two side walls of the other first dovetail groove respectively.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: two second dovetail grooves are respectively formed in four sections of arcs of the reinforcing limiting component, two third scarf joint components are arranged on the outer wall of a fifth arc section of the butterfly unit protective layer attached to the reinforcing limiting component, each third scarf joint component is composed of a fifth scarf joint strip and a sixth scarf joint strip, one end of each fifth scarf joint strip and one end of each sixth scarf joint strip are fixedly connected with the corresponding fifth arc section on the butterfly unit protective layer, a third telescopic groove is formed between each fifth scarf joint strip and each sixth scarf joint strip, the distance between the other end of each fifth scarf joint strip and the other end of each sixth scarf joint strip is larger than the distance between one end of each fifth scarf joint strip and one end of each sixth scarf joint strip, and each third scarf joint component is respectively in scarf joint with the corresponding second dovetail grooves, and each fifth scarf joint strip and each sixth scarf joint strip are attached to two side walls of the corresponding second dovetail grooves.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the inside of strengthening spacing part is equipped with at least one electric unit, and electric unit comprises electric conductor and the electric unit sheath of extrusion molding outside the electric conductor.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the material of the outer protective layer is high-density polyethylene or medium-density polyethylene or low-density polyethylene.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the butterfly unit sheath is made of high-density polyethylene or medium-density polyethylene or low-density polyethylene.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the butterfly-shaped protective layer is made of flame-retardant polyolefin.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the loose tube is made of polybutylene terephthalate.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the optical communication component is an optical fiber or an optical fiber ribbon body, the optical fiber ribbon is formed by combining at least two optical fibers, and the optical fiber ribbon body is formed by stacking at least two optical fiber ribbons.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the optical fiber is a single-mode optical fiber or a multimode optical fiber.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the distance between the two vertexes of the reinforced limiting part is larger than the distance between the two ends of the butterfly unit on the long axis.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: two signal wires are arranged in the accommodating cavity of the butterfly unit, are respectively positioned on the connecting lines of two intersection points of the two fifth arc sections of the protective layer of the butterfly unit and are positioned on two sides of the butterfly unit, and can realize photoelectric simultaneous transmission of the subunits.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: two tearing ropes are further arranged in the butterfly unit accommodating cavity, are respectively located on the connecting lines of two intersection points of the two fifth arc sections of the butterfly unit protecting layer and located on two sides of the butterfly unit, are convenient to separate the butterfly unit protecting layer, and take out the butterfly unit inside.
The above-mentioned embedded structure butterfly-shaped introducing optical cable, its characterized in that: the first clamping strip, the second clamping strip, the third clamping strip, the fourth clamping strip, the fifth clamping strip and the sixth clamping strip have elasticity.
The application has the following main beneficial technical effects:
1. the four sections of arcs of the reinforced limiting part are attached to the fifth arcs of the corresponding butterfly unit protecting layers, the reinforced limiting part is in surface contact with the butterfly unit protecting layers, the contact surface between the subunit and the reinforced limiting part is increased, and compared with the line contact between the common cylindrical central reinforcing part and the cylindrical loose tube, the reinforced butterfly unit protecting layer has better extrusion resistance.
2. Four arcs of the reinforcing limiting part are recessed towards the center of the small square, the cross section of the subunit is shaped like an olive, the contact surface of the reinforcing limiting part and the butterfly unit protective layer is an arc contact surface, and compared with planar contact, the contact surface of the arc contact surface is larger, so that the extrusion resistance of the optical cable is further improved.
3. Any two subunits are separated by the reinforcing limiting part, and the subunits are not mutually extruded.
4. When four strengthening limit parts are arranged, the distance between two vertexes of the strengthening limit parts is larger than the distance between two ends of the butterfly unit on the long shaft, so that the butterfly unit between two adjacent strengthening limit parts is completely positioned between the two adjacent strengthening limit parts, and the butterfly unit between the two adjacent strengthening limit parts is better protected.
5. The reinforcing limiting parts are mutually embedded with the subunits, the reinforcing limiting parts and the subunits form a whole, the fixing such as yarn binding or belting is not needed, the production efficiency is better, and the cost is lower.
6. Signal wires are arranged between the two ends of the long shaft of the butterfly unit and the two ends of the long shaft of the butterfly unit accommodating cavity, so that photoelectric simultaneous transmission of the subunits can be realized; or tearing ropes are arranged between the two ends of the long shaft of the butterfly unit and the two ends of the long shaft of the butterfly unit accommodating cavity, so that the butterfly unit protecting layers can be separated conveniently, and the butterfly unit inside the butterfly unit protecting layers can be taken out.
7. All the subunits and the reinforced limiting parts have the same structure, thereby being beneficial to production and quick cable core preparation.
8. When having one and strengthening spacing part, the fifth arc section that laminates when the butterfly unit sheath of four subunits when not strengthening spacing part forms a complete face of cylinder, makes product stable in structure, and is more round, smooth, and when sheath production process, the yield is higher, and is more favorable to laying.
Drawings
Fig. 1 is a schematic perspective view of a stripped end of a segment of example 1.
Fig. 2 is a front view of embodiment example 1.
Fig. 3 is a schematic perspective view of the end of the section of example 2 after stripping.
Fig. 4 is a front view of embodiment example 2.
Fig. 5 is a front view of the butterfly unit and sheath of implementation example 1 or implementation example 2.
Fig. 6 is a schematic perspective view of a section of the reinforced stop member of embodiment 3.
Fig. 7 is a front view of the reinforcement stopper member of embodiment 3.
Fig. 8 is a schematic perspective view of an electrical unit of a section of the reinforcing and limiting member of embodiment example 4 after being peeled off.
Fig. 9 is a front view of the reinforcement stopper member of embodiment example 4.
Fig. 10 is a schematic perspective view of a section of the butterfly unit sheath of embodiment 3 or embodiment 4.
Fig. 11 is a front view of the butterfly unit sheath of example 3 or example 4.
Fig. 12 is a schematic perspective view of an electrical unit of a section of the reinforcing and limiting member of embodiment 5 after being peeled off.
Fig. 13 is a front view of the reinforcement stopper member of embodiment example 5.
Fig. 14 is a schematic perspective view of a section of the butterfly unit sheath of embodiment example 5.
Fig. 15 is a front view of the butterfly unit sheath of example 5.
So that those skilled in the art can better understand and practice the present patent, reference will now be made in detail to the drawings, which are illustrated in the accompanying drawings.
In the figure: 1. the cable comprises a reinforcing limiting component, 11, a reinforcing limiting component main body, 12, a first scarf joint component, 120, a first telescopic groove, 121, a first scarf joint strip, 122, a second scarf joint strip, 13, a second scarf joint component, 130, a second telescopic groove, 131, a third scarf joint strip, 132, a fourth scarf joint strip, 14, a second dovetail groove, 2, a butterfly unit, 21, a butterfly protection layer, 22, a reinforcing piece, 23, a loose tube, 24, an optical communication component, 25, a tearing opening, 3, a butterfly unit protection layer, 31, a butterfly unit containing cavity, 32, a first dovetail groove, 330, a third telescopic groove, 331, a fifth scarf joint strip, 332, a sixth scarf joint strip, 4, a fixed layer, 5, an outer protection layer, 61, an electric conductor and 62.
Detailed Description
Example 1
Please see fig. 1, fig. 2 and fig. 5, an embedded butterfly-shaped drop cable, which has an outer sheath 5 and a cable core, wherein the outer sheath 5 is extruded outside the cable core, and is characterized in that: the cable core consists of a reinforcing limiting part 1 and four subunits, wherein in the same cross section, the reinforcing limiting part 1 is provided with four vertex angles, the four vertex angles are positioned on the four vertex angles of the same small square, a section of arc is formed between every two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, and the four sections of arc are recessed towards the center of the small square;
The subunit consists of a butterfly unit 2 and a butterfly unit protection layer 3, a butterfly unit accommodating cavity 31 is formed in the butterfly unit protection layer 3, the butterfly unit 2 is positioned in the butterfly unit accommodating cavity 31, the butterfly unit protection layer 3 consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, two ends of one fifth arc section are fixedly connected with two ends of the other fifth arc section, four arcs of the reinforcing limiting part 1 are respectively attached to one fifth arc section of the butterfly unit protection layer 3 of one subunit, and the other fifth arc section of the butterfly unit protection layer 3 of the four subunits forms a complete cylindrical surface;
the butterfly unit 2 is composed of a butterfly protection layer 21, two reinforcing pieces 22 and a loose tube 23, wherein the two reinforcing pieces 22 are positioned on two sides of the loose tube 23, the butterfly protection layer 21 is extruded outside the two reinforcing pieces 22 and the loose tube 23, at least one optical communication component 24 is arranged in the loose tube 23, a straight line where a connecting line of the centers of the two reinforcing pieces 22 is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces 22 is a short axis, two intersecting positions of the outer edges of the butterfly protection layers 21 on two sides of the short axis and the long axis respectively form a tearing opening 25 for rapidly separating the butterfly protection layers 21, the loose tube 23 is taken out, the butterfly protection layers 21 on two sides of the long axis are respectively attached to inner walls of two sections of the fifth arc sections of the corresponding butterfly unit protection layers 3, and a fixing component 4 is further arranged between the outer protection layer 5 and a cable core.
Further, glue can be sprayed at the joint of the butterfly unit protective layer 3 and the reinforced limiting part 1, so that the positions of the butterfly unit protective layer 3 and the reinforced limiting part 1 are further fixed.
Example 2 of the embodiment
Please refer to fig. 3, fig. 4 and fig. 5, an embedded butterfly-shaped drop cable with an outer sheath 5 and a cable core, wherein the outer sheath 5 is extruded outside the cable core, and is characterized in that: the cable core is composed of four reinforced limiting parts 1 and twelve subunits, in the same cross section, the reinforced limiting parts 1 are provided with four vertex angles, the four vertex angles are positioned on the four vertex angles of the same small square, one side of the small square is horizontally arranged, a section of arc is formed between two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, the four sections of arc are recessed towards the center of the small square, the arc above the reinforced limiting parts 1 is a first arc section, the arc below the reinforced limiting parts 1 is a second arc section, the arc on the left side of the reinforced limiting parts 1 is a third arc section, and the arc on the right side of the reinforced limiting parts 1 is a fourth arc section;
the subunit consists of a butterfly unit 2 and a butterfly unit protection layer 3, a butterfly unit accommodating cavity 31 is formed in the butterfly unit protection layer 3, the butterfly unit 2 is positioned in the butterfly unit accommodating cavity 31, the butterfly unit protection layer 3 consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, and the two ends of one fifth arc section are fixedly connected with the two ends of the other fifth arc section;
The centers of the four reinforced limiting parts 1 are positioned on four vertexes of the same large square, and one side of the large square is horizontally arranged;
a subunit is arranged above the reinforcing and limiting part 1 at the upper left, and a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the subunit is horizontally arranged, wherein the first arc section of the reinforcing and limiting part 1 at the upper left is attached to the fifth arc section below the butterfly unit protective layer 3 of the subunit;
a subunit is arranged between the upper left reinforcing and limiting part 1 and the lower left reinforcing and limiting part 1, the connecting line of two intersection points of two sections of the fifth arc sections of the butterfly unit protective layer 3 of the subunit is horizontally arranged, and the second arc section of the upper left reinforcing and limiting part 1 and the first arc section of the lower left reinforcing and limiting part 1 are respectively attached to the two fifth arc sections of the butterfly unit protective layer 3 of the subunit;
a subunit is arranged below the reinforcing and limiting part 1 at the lower left, and a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the subunit is horizontally arranged, wherein the second arc section of the reinforcing and limiting part 1 at the lower left is attached to the fifth arc section above the butterfly unit protective layer 3 of the subunit;
A subunit is arranged above the reinforcing and limiting part 1 at the upper right, and a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the subunit is horizontally arranged, wherein the first arc section of the reinforcing and limiting part 1 at the upper right is attached to the fifth arc section below the butterfly unit protective layer 3 of the subunit;
a subunit is arranged between the upper right reinforcing and limiting part 1 and the lower right reinforcing and limiting part 1, the connecting line of two intersection points of two sections of the fifth arc sections of the butterfly unit protective layer 3 of the subunit is horizontally arranged, and the second arc section of the upper right reinforcing and limiting part 1 and the first arc section of the lower right reinforcing and limiting part 1 are respectively attached to the two fifth arc sections of the butterfly unit protective layer 3 of the subunit;
a subunit is arranged below the right lower reinforcing and limiting component 1, a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the subunit is horizontally arranged, and the second arc section of the right lower reinforcing and limiting component 1 is attached to the fifth arc section above the butterfly unit protective layer 3 of the subunit;
a subunit is arranged at the left side of the upper left reinforcing and limiting component 1, a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the subunit is vertically arranged, and the third arc section of the upper left reinforcing and limiting component 1 is attached to the fifth arc section at the right side of the butterfly unit protective layer 3 of the subunit;
A subunit is arranged between the upper left reinforcing and limiting part 1 and the upper right reinforcing and limiting part 1, a connecting line of two intersection points of two fifth arc sections of the butterfly unit protective layer 3 of the subunit is vertically arranged, and a fourth arc section of the upper left reinforcing and limiting part 1 and the third arc section of the upper right reinforcing and limiting part 1 are respectively attached to the two fifth arc sections of the butterfly unit protective layer 3 of the subunit;
a sub-unit is arranged on the right side of the upper right reinforcing and limiting component 1, a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the sub-unit is vertically arranged, and a fourth arc section of the upper right reinforcing and limiting component 1 is attached to the fifth arc section on the left side of the butterfly unit protective layer 3 of the sub-unit;
the left side of the left lower reinforcing and limiting part 1 is provided with a subunit, two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the subunit are vertically arranged, and the third arc section of the left lower reinforcing and limiting part 1 is attached to the right fifth arc section of the butterfly unit protective layer 3 of the subunit;
a subunit is arranged between the left lower reinforcing and limiting part 1 and the right lower reinforcing and limiting part 1, two intersection points of two fifth arc sections of the butterfly unit protective layer 3 of the subunit are vertically arranged, and a fourth arc section of the left lower reinforcing and limiting part 1 and the third arc section of the right lower reinforcing and limiting part 1 are respectively attached to the two fifth arc sections of the butterfly unit protective layer 3 of the subunit;
A sub-unit is arranged on the right side of the right lower reinforcing and limiting component 1, two intersection points of two sections of fifth arc sections of the butterfly unit protective layer 3 of the sub-unit are vertically arranged, and a fourth arc section of the right lower reinforcing and limiting component 1 is attached to the fifth arc section on the left side of the butterfly unit protective layer 3 of the sub-unit;
the fifth arc sections of the four butterfly unit protective layers 3 which are adjacent to the same reinforcing and limiting part 1 and are not attached to the reinforcing and limiting part 1 form a complete cylindrical surface;
the butterfly unit 2 is composed of a butterfly protection layer 21, two reinforcing pieces 22 and a loose tube 23, wherein the two reinforcing pieces 22 are positioned on two sides of the loose tube 23, the butterfly protection layer 21 is extruded outside the two reinforcing pieces 22 and the loose tube 23, at least one optical communication component 24 is arranged in the loose tube 23, a straight line where a connecting line of the centers of the two reinforcing pieces 22 is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces 22 is a short axis, two intersecting positions of the outer edges of the butterfly protection layers 21 on two sides of the short axis and the long axis respectively form a tearing opening 25 for rapidly separating the butterfly protection layers 21, the loose tube 23 is taken out, the butterfly protection layers 21 on two sides of the long axis are respectively attached to inner walls of two sections of the fifth arc sections of the corresponding butterfly unit protection layers 3, and a fixing component 4 is further arranged between the outer protection layer 5 and a cable core.
Example 3
Please refer to fig. 6, 7, 10 and 11, and refer to fig. 1, 2 and 5, an embedded butterfly drop cable is provided with an outer sheath 5 and a cable core, wherein the outer sheath 5 is extruded outside the cable core, and is characterized in that: the cable core consists of a reinforcing limiting part 1 and four subunits, wherein in the same cross section, the reinforcing limiting part 1 is provided with four vertex angles, the four vertex angles are positioned on the four vertex angles of the same small square, a section of arc is formed between every two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, and the four sections of arc are recessed towards the center of the small square;
the four arcs of the reinforcement limiting component 1 are respectively provided with a first scarf joint component 12 and a second scarf joint component 13, the first scarf joint component 12 is composed of a first scarf joint strip 121 and a second scarf joint strip 122, one end of the first scarf joint strip 121 and one end of the second scarf joint strip 122 are respectively and fixedly connected with corresponding arcs on the reinforcement limiting component 1, a first telescopic groove 120 is arranged between the first scarf joint strip 121 and the second scarf joint strip 122, the distance between the other end of the first scarf joint strip 121 and the other end of the second scarf joint strip 122 is larger than the distance between one end of the first scarf joint strip 121 and one end of the second scarf joint strip 122, the second scarf joint component 13 is composed of a third scarf joint strip 131 and a fourth scarf joint strip 132, one end of the third scarf joint strip 131 and one end of the fourth scarf joint strip 132 are respectively and fixedly connected with corresponding arcs on the reinforcement limiting component 1, a second telescopic groove 130 is arranged between the third scarf joint strip 131 and the fourth scarf joint strip 132, and the distance between the other end of the third scarf joint strip 131 and the other end of the fourth scarf joint strip 132 is larger than the distance between the first scarf joint strip 132 and the first end of the fourth scarf joint strip;
The subunit consists of a butterfly unit 2 and a butterfly unit protection layer 3, a butterfly unit accommodating cavity 31 is formed in the butterfly unit protection layer 3, the butterfly unit 2 is positioned in the butterfly unit accommodating cavity 31, the butterfly unit protection layer 3 consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, two ends of one fifth arc section are fixedly connected with two ends of the other fifth arc section, four arcs of the reinforcing limiting part 1 are respectively attached to one fifth arc section of the butterfly unit protection layer 3 of one subunit, two first dovetail grooves 32 are formed on the outer wall of one fifth arc section of the butterfly unit protection layer 3 attached to the reinforcing limiting part 1, the first scarf joint component 12 is in scarf joint with one first dovetail groove 32, the first scarf joint strip 121 and the second scarf joint strip 122 are respectively attached to two side walls of the first dovetail groove 32, the second scarf joint component 13 is attached to the other first dovetail groove 32, and the fourth scarf joint strip 131 is attached to the other fifth arc section of the other dovetail protection layer 32;
The butterfly unit 2 is composed of a butterfly protection layer 21, two reinforcing pieces 22 and a loose tube 23, wherein the two reinforcing pieces 22 are positioned on two sides of the loose tube 23, the butterfly protection layer 21 is extruded outside the two reinforcing pieces 22 and the loose tube 23, at least one optical communication component 24 is arranged in the loose tube 23, a straight line where a connecting line of the centers of the two reinforcing pieces 22 is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces 22 is a short axis, two intersecting positions of the outer edges of the butterfly protection layers 21 on two sides of the short axis and the long axis respectively form a tearing opening 25 for rapidly separating the butterfly protection layers 21, the loose tube 23 is taken out, the butterfly protection layers 21 on two sides of the long axis are respectively attached to inner walls of two sections of the fifth arc sections of the corresponding butterfly unit protection layers 3, and a fixing component 4 is further arranged between the outer protection layer 5 and a cable core.
Example 4
Please refer to fig. 8, 9, 10 and 11, and refer to fig. 1, 2 and 5, an embedded butterfly drop cable is provided with an outer sheath 5 and a cable core, wherein the outer sheath 5 is extruded outside the cable core, and is characterized in that: the cable core consists of a reinforced limiting part 1 and four subunits, wherein at least one electric unit is arranged in the reinforced limiting part 1, the electric unit consists of a conductor 61 and an electric unit protective layer 62 extruded outside the conductor 61, the reinforced limiting part 1 is provided with four vertex angles in the same cross section, the four vertex angles are positioned on the four vertex angles of the same small square, a section of arc is formed between every two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, and the four sections of arc are recessed towards the center of the small square;
The four arcs of the reinforcement limiting component 1 are respectively provided with a first scarf joint component 12 and a second scarf joint component 13, the first scarf joint component 12 is composed of a first scarf joint strip 121 and a second scarf joint strip 122, one end of the first scarf joint strip 121 and one end of the second scarf joint strip 122 are respectively and fixedly connected with corresponding arcs on the reinforcement limiting component 1, a first telescopic groove 120 is arranged between the first scarf joint strip 121 and the second scarf joint strip 122, the distance between the other end of the first scarf joint strip 121 and the other end of the second scarf joint strip 122 is larger than the distance between one end of the first scarf joint strip 121 and one end of the second scarf joint strip 122, the second scarf joint component 13 is composed of a third scarf joint strip 131 and a fourth scarf joint strip 132, one end of the third scarf joint strip 131 and one end of the fourth scarf joint strip 132 are respectively and fixedly connected with corresponding arcs on the reinforcement limiting component 1, a second telescopic groove 130 is arranged between the third scarf joint strip 131 and the fourth scarf joint strip 132, and the distance between the other end of the third scarf joint strip 131 and the other end of the fourth scarf joint strip 132 is larger than the distance between the first scarf joint strip 132 and the first end of the fourth scarf joint strip;
the subunit consists of a butterfly unit 2 and a butterfly unit protection layer 3, a butterfly unit accommodating cavity 31 is formed in the butterfly unit protection layer 3, the butterfly unit 2 is positioned in the butterfly unit accommodating cavity 31, the butterfly unit protection layer 3 consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, two ends of one fifth arc section are fixedly connected with two ends of the other fifth arc section, four arcs of the reinforcing limiting part 1 are respectively attached to one fifth arc section of the butterfly unit protection layer 3 of one subunit, two first dovetail grooves 32 are formed on the outer wall of one fifth arc section of the butterfly unit protection layer 3 attached to the reinforcing limiting part 1, the first scarf joint component 12 is in scarf joint with one first dovetail groove 32, the first scarf joint strip 121 and the second scarf joint strip 122 are respectively attached to two side walls of the first dovetail groove 32, the second scarf joint component 13 is attached to the other first dovetail groove 32, and the fourth scarf joint strip 131 is attached to the other fifth arc section of the other dovetail protection layer 32;
The butterfly unit 2 is composed of a butterfly protection layer 21, two reinforcing pieces 22 and a loose tube 23, wherein the two reinforcing pieces 22 are positioned on two sides of the loose tube 23, the butterfly protection layer 21 is extruded outside the two reinforcing pieces 22 and the loose tube 23, at least one optical communication component 24 is arranged in the loose tube 23, a straight line where a connecting line of the centers of the two reinforcing pieces 22 is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces 22 is a short axis, two intersecting positions of the outer edges of the butterfly protection layers 21 on two sides of the short axis and the long axis respectively form a tearing opening 25 for rapidly separating the butterfly protection layers 21, the loose tube 23 is taken out, the butterfly protection layers 21 on two sides of the long axis are respectively attached to inner walls of two sections of the fifth arc sections of the corresponding butterfly unit protection layers 3, and a fixing component 4 is further arranged between the outer protection layer 5 and a cable core.
Example 5
Please refer to fig. 12, 13, 14, 15, and refer to fig. 1, 2, and 5, an embedded butterfly drop cable, which has an outer sheath 5 and a cable core, wherein the outer sheath 5 is extruded outside the cable core, and is characterized in that: the cable core consists of a reinforced limiting part 1 and four subunits, wherein at least one electric unit is arranged in the reinforced limiting part 1, the electric unit consists of an electric conductor 61 and an electric unit protective layer 62 extruded outside the electric conductor 61, the reinforced limiting part 1 is provided with four vertex angles in the same cross section, the four vertex angles are positioned on the four vertex angles of the same small square, a section of arc is formed between every two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the circular arcs of the four sections of arc are equal, the four sections of arc are recessed towards the center of the small square, and two second dovetail grooves 14 are respectively arranged on the four sections of arc of the reinforced limiting part 1;
The subunit consists of a butterfly unit 2 and a butterfly unit protection layer 3, a butterfly unit accommodating cavity 31 is formed in the butterfly unit protection layer 3, the butterfly unit 2 is positioned in the butterfly unit accommodating cavity 31, the butterfly unit protection layer 3 consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, two ends of one fifth arc section are fixedly connected with two ends of the other fifth arc section, four arcs of the reinforcing limiting part 1 are respectively attached to one fifth arc section of the butterfly unit protection layer 3 of one subunit, two third scarf joint components are arranged on the outer wall of one fifth arc section of the butterfly unit protection layer 3 attached to the reinforcing limiting part 1, the third scarf joint component consists of a fifth scarf joint strip 331 and a sixth scarf joint strip 332, one end of the fifth scarf joint strip 331 and one end of the sixth scarf joint strip 332 are respectively and fixedly connected with corresponding fifth arc sections on the butterfly unit protective layer 3, a third telescopic groove 330 is arranged between the fifth scarf joint strip 331 and the sixth scarf joint strip 332, the distance between the other end of the fifth scarf joint strip 331 and the other end of the sixth scarf joint strip 332 is larger than the distance between one end of the fifth scarf joint strip 331 and one end of the sixth scarf joint strip 332, the two third scarf joint components are respectively in scarf joint with corresponding second dovetail grooves 14, the fifth scarf joint strip 331 and the sixth scarf joint strip 332 are respectively attached to two side walls of the corresponding second dovetail grooves 14, and the other section of the fifth arc sections of the butterfly unit protective layer 3 of the four subunits form a complete cylindrical surface;
The butterfly unit 2 is composed of a butterfly protection layer 21, two reinforcing pieces 22 and a loose tube 23, wherein the two reinforcing pieces 22 are positioned on two sides of the loose tube 23, the butterfly protection layer 21 is extruded outside the two reinforcing pieces 22 and the loose tube 23, at least one optical communication component 24 is arranged in the loose tube 23, a straight line where a connecting line of the centers of the two reinforcing pieces 22 is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces 22 is a short axis, two intersecting positions of the outer edges of the butterfly protection layers 21 on two sides of the short axis and the long axis respectively form a tearing opening 25 for rapidly separating the butterfly protection layers 21, the loose tube 23 is taken out, the butterfly protection layers 21 on two sides of the long axis are respectively attached to inner walls of two sections of the fifth arc sections of the corresponding butterfly unit protection layers 3, and a fixing component 4 is further arranged between the outer protection layer 5 and a cable core.
For the sake of simplicity, only one second dovetail groove 14 is shown in fig. 12, and in practice, two second dovetail grooves 14 are provided for each side wall of the reinforcing stop member 1.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the material of the outer protective layer 5 is high-density polyethylene or medium-density polyethylene or low-density polyethylene.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the butterfly unit sheath 3 is made of high-density polyethylene or medium-density polyethylene or low-density polyethylene.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the butterfly-shaped protective layer 21 is made of flame-retardant polyolefin.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the loose tube 23 is made of polybutylene terephthalate.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the optical communication component 24 is an optical fiber, an optical fiber ribbon, or an optical fiber ribbon body, wherein the optical fiber ribbon is formed by combining at least two optical fibers, and the optical fiber ribbon body is formed by stacking at least two optical fiber ribbons.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the optical fiber is a single-mode optical fiber or a multimode optical fiber.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the distance between the two vertexes of the reinforcement and limit member 1 is greater than the distance between the two ends of the butterfly unit 2 on the long axis.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: two signal wires are further arranged in the butterfly unit accommodating cavity 31, are respectively positioned on the connecting lines of two intersection points of the two fifth arc sections of the butterfly unit protective layer 3 and are positioned on two sides of the butterfly unit 2, and can realize photoelectric simultaneous transmission of the subunits.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: two tearing ropes are further arranged in the butterfly unit accommodating cavity 31, are respectively located on the connecting lines of two intersection points of the two fifth arc sections of the butterfly unit protecting layer 3 and located on two sides of the butterfly unit 2, are convenient to separate the butterfly unit protecting layer 3, and take out the butterfly unit 2 inside.
The application relates to an embedded butterfly-shaped lead-in optical cable, which is characterized in that: the first clamping bar 121, the second clamping bar 122, the third clamping bar 131, the fourth clamping bar 132, the fifth clamping bar 331 and the sixth clamping bar 332 have elasticity.
In the present application, the sub-units of embodiment 1 and embodiment 2 are embedded in the side face of the reinforcing and spacing member 1 recessed toward the middle, and embodiments 3 to 5 are not only embedded in the side face of the reinforcing and spacing member 1 recessed toward the middle, but also further fix the sub-units and the reinforcing and spacing member 1 by the scarf joint assembly and the dovetail groove.
In the present application, the outer edge of the cross section of the butterfly unit sheath 3 resembles an olive shape.
In the present application, the fixing member 4 is mainly used for fixing the structure of the cable core.
The application has the following main beneficial technical effects:
1. The four sections of arcs of the reinforcing limiting part 1 are attached to the fifth arcs of the corresponding butterfly unit protecting layers 3, the reinforcing limiting part 1 is in surface contact with the butterfly unit protecting layers 3, the contact surface between the subunit and the reinforcing limiting part 1 is increased, and compared with the line contact between a common cylindrical center reinforcing part and a cylindrical loose tube, the application has better extrusion resistance.
2. Four arcs of the reinforcing limiting part 1 are recessed towards the center of the small square, the cross section of the subunit is shaped like an olive, the contact surface of the reinforcing limiting part 1 and the butterfly unit protective layer 3 is an arc contact surface, and compared with planar contact, the contact surface of the arc contact surface is larger, so that the extrusion resistance of the optical cable is further improved.
3. Any two sub-units are separated by the reinforcing limiting part 1, and the sub-units are not mutually extruded.
4. When four reinforcing and limiting components 1 are arranged, the distance between two vertexes of the reinforcing and limiting components 1 is larger than the distance between two ends of the butterfly unit 2 on the long axis, so that the butterfly unit 2 between two adjacent reinforcing and limiting components 1 is completely positioned between two adjacent reinforcing and limiting components 1, and the butterfly unit 2 between two adjacent reinforcing and limiting components 1 is better protected.
5. The reinforcing limiting parts 1 are mutually embedded with the subunits, the reinforcing limiting parts 1 and the subunits form a whole, the fixing of yarn binding, tape wrapping and the like is not needed, the production efficiency is better, and the cost is lower.
6. Signal wires are arranged between the two ends of the long axis of the butterfly unit 2 and the two ends of the long axis of the butterfly unit accommodating cavity 31, so that photoelectric simultaneous transmission of the subunits can be realized; or a tearing rope is arranged between the two ends of the long shaft of the butterfly unit 2 and the two ends of the long shaft of the butterfly unit accommodating cavity 31, so that the butterfly unit protective layer 3 can be conveniently separated, and the butterfly unit 2 inside the butterfly unit is taken out.
7. All the subunits and the reinforcing and limiting parts 1 have the same structure, which is beneficial to production and quick cable core preparation.
8. When the reinforced limiting part 1 is arranged, the fifth arc section of the butterfly unit protective layer 3 of the four subunits, which is not attached to the reinforced limiting part 1, forms a complete cylindrical surface, so that the product is stable in structure, more round and smooth, and higher in yield and more beneficial to laying in the sheath production process.
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 (2)
1. The utility model provides an embedded structure butterfly-shaped introducing optical cable, has outer sheath (5) and cable core, and outer sheath (5) extrusion molding is outside the cable core, its characterized in that: the cable core is composed of four reinforced limiting parts (1) and twelve subunits, the reinforced limiting parts (1) are provided with four vertex angles in the same cross section, the four vertex angles are positioned on the four vertex angles of the same small square, one side of the small square is horizontally arranged, one section of arc is formed between two adjacent vertex angles, the central angles of the four sections of arc are equal, the diameters of the arcs of the four sections of arc are equal, the arcs of the four sections of arc are concave towards the center of the small square, the arc above the reinforced limiting parts (1) is a first arc section, the arc below the reinforced limiting parts (1) is a second arc section, the arc on the left side of the reinforced limiting parts (1) is a third arc section, and the arc on the right side of the reinforced limiting parts (1) is a fourth arc section;
the subunit consists of a butterfly unit (2) and a butterfly unit protection layer (3), a butterfly unit accommodating cavity (31) is formed in the butterfly unit protection layer (3), the butterfly unit (2) is positioned in the butterfly unit accommodating cavity (31), the butterfly unit protection layer (3) consists of two fifth arc sections, the central angles of the two fifth arc sections are equal, the arc diameters of the two fifth arc sections are equal, the bending directions of the two fifth arc sections are opposite, and the two ends of one fifth arc section are fixedly connected with the two ends of the other fifth arc section;
The centers of the four reinforced limiting parts (1) are positioned on four vertexes of the same large square, and one side of the large square is horizontally arranged;
a subunit is arranged above the upper left reinforcing and limiting component (1), a connecting line of two intersection points of two sections of the fifth arc sections of the butterfly unit protective layer (3) of the subunit is horizontally arranged, and the first arc section of the upper left reinforcing and limiting component (1) is attached to the fifth arc section below the butterfly unit protective layer (3) of the subunit;
a subunit is arranged between the upper left reinforcing and limiting component (1) and the lower left reinforcing and limiting component (1), a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the subunit is horizontally arranged, and a second arc section of the upper left reinforcing and limiting component (1) and a first arc section of the lower left reinforcing and limiting component (1) are respectively attached to the two fifth arc sections of the butterfly unit protective layer (3) of the subunit;
a subunit is arranged below the left lower reinforcing and limiting component (1), a connecting line of two intersection points of two sections of the fifth arc sections of the butterfly unit protective layer (3) of the subunit is horizontally arranged, and the second arc section of the left lower reinforcing and limiting component (1) is attached to the fifth arc section above the butterfly unit protective layer (3) of the subunit;
A subunit is arranged above the upper right reinforcing and limiting component (1), a connecting line of two intersection points of two sections of the fifth arc sections of the butterfly unit protective layer (3) of the subunit is horizontally arranged, and the first arc section of the upper right reinforcing and limiting component (1) is attached to the fifth arc section below the butterfly unit protective layer (3) of the subunit;
a subunit is arranged between the upper right reinforcing and limiting component (1) and the lower right reinforcing and limiting component (1), the connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the subunit is horizontally arranged, and the second arc section of the upper right reinforcing and limiting component (1) and the first arc section of the lower right reinforcing and limiting component (1) are respectively attached to the two fifth arc sections of the butterfly unit protective layer (3) of the subunit;
a subunit is arranged below the right lower reinforcing and limiting component (1), a connecting line of two intersection points of two sections of the fifth arc sections of the butterfly unit protective layer (3) of the subunit is horizontally arranged, and the second arc section of the right lower reinforcing and limiting component (1) is attached to the fifth arc section above the butterfly unit protective layer (3) of the subunit;
a subunit is arranged at the left side of the upper left reinforcing and limiting component (1), a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the subunit is vertically arranged, and the third arc section of the upper left reinforcing and limiting component (1) is attached to the fifth arc section at the right side of the butterfly unit protective layer (3) of the subunit;
A subunit is arranged between the upper left reinforcing and limiting component (1) and the upper right reinforcing and limiting component (1), a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the subunit is vertically arranged, and a fourth arc section of the upper left reinforcing and limiting component (1) and a third arc section of the upper right reinforcing and limiting component (1) are respectively attached to the two fifth arc sections of the butterfly unit protective layer (3) of the subunit;
a sub-unit is arranged on the right side of the upper right reinforcing and limiting component (1), a connecting line of two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the sub-unit is vertically arranged, and a fourth arc section of the upper right reinforcing and limiting component (1) is attached to the fifth arc section on the left side of the butterfly unit protective layer (3) of the sub-unit;
a subunit is arranged at the left side of the left lower reinforcing and limiting component (1), two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the subunit are vertically arranged, and the third arc section of the left lower reinforcing and limiting component (1) is attached to the right fifth arc section of the butterfly unit protective layer (3) of the subunit;
a subunit is arranged between the left lower reinforcing and limiting component (1) and the right lower reinforcing and limiting component (1), two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the subunit are vertically arranged, and a fourth arc section of the left lower reinforcing and limiting component (1) and a third arc section of the right lower reinforcing and limiting component (1) are respectively attached to two fifth arc sections of the butterfly unit protective layer (3) of the subunit;
A sub-unit is arranged on the right side of the right lower reinforcing and limiting component (1), two intersection points of two sections of fifth arc sections of the butterfly unit protective layer (3) of the sub-unit are vertically arranged, and a fourth arc section of the right lower reinforcing and limiting component (1) is attached to a left fifth arc section of the butterfly unit protective layer (3) of the sub-unit;
the fifth arc sections of the four butterfly unit protective layers (3) which are adjacent to the same reinforcing and limiting component (1) and are not attached to the reinforcing and limiting component (1) form a complete cylindrical surface, and a fixing component (4) is arranged between the outer protective layer (5) and the cable core.
2. An embedded structured butterfly drop cable according to claim 1, wherein: the butterfly unit (2) is composed of a butterfly protection layer (21), two reinforcing pieces (22) and a loose tube (23), wherein the two reinforcing pieces (22) are located on two sides of the loose tube (23), the butterfly protection layer (21) is extruded outside the two reinforcing pieces (22) and the loose tube (23), at least one optical communication component (24) is arranged in the loose tube (23), a straight line where a connecting line of the centers of the two reinforcing pieces (22) is located is a long axis, a straight line perpendicular to the long axis and passing through the middle point of the connecting line of the centers of the two reinforcing pieces (22) is a short axis, two intersecting parts of the short axis and the outer edges of the butterfly protection layers (21) on two sides of the long axis respectively form a tearing opening (25), and the butterfly protection layers (21) on two sides of the long axis are respectively attached to inner walls of two fifth arc sections of the corresponding butterfly unit protection layer (3).
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| CN202310862161.0A CN116577892B (en) | 2023-07-14 | 2023-07-14 | Butterfly-shaped lead-in optical cable with embedded structure |
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