CN213843625U - Double-core rubber-insulated-wire optical fiber branch structure - Google Patents
Double-core rubber-insulated-wire optical fiber branch structure Download PDFInfo
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- CN213843625U CN213843625U CN202023081025.9U CN202023081025U CN213843625U CN 213843625 U CN213843625 U CN 213843625U CN 202023081025 U CN202023081025 U CN 202023081025U CN 213843625 U CN213843625 U CN 213843625U
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Abstract
The utility model discloses a two core rubber-insulated-wire optical fiber branch structures, including two fine rubber-insulated-wire optical cables, branch cover and two branch sleeve pipes, two optic fibre in the middle of two fine rubber-insulated-wire optical cables include the sheath and are located the sheath, and the tip of two optic fibre is worn out from the right-hand member of sheath and is penetrated respectively in the middle of two branch sleeve pipes, and the right-hand member of sheath inserts in the branch cover from the left end of branch cover, and in two branch sleeve pipe's left end was drawn together from the right-hand member of branch cover and is inserted the branch cover, and the right-hand member of branch cover presss from both sides two branch sleeve pipe's left end tightly. The left ends of the two branch sleeves are closed, so that the distance between the left ends of the two branch sleeves is eliminated, the design width of the branch sleeve is reduced, the branch sleeve is miniaturized, and the manufacturing cost of the branch sleeve is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a two core rubber-insulated-wire optical fiber branch structures belongs to the optic fibre field.
[ background of the invention ]
At present, single-fiber optical fiber access is basically used for fiber to the home, but in recent years, the market of the double-core rubber-insulated-wire optical cable shows a good development trend, particularly in the field of broadcasting and television in China, one fiber of the double-core rubber-insulated-wire optical cable is used for video transmission, and the other fiber of the double-core rubber-insulated-wire optical cable is used for a network.
Two parallel reinforcing components are arranged on two sides of two optical fibers in the double-core rubber-insulated-wire optical cable, and a sheath is extruded outside the optical fibers, so that in the process of prefabricating two ends or one end of the double-core rubber-insulated-wire optical cable into ends, the sheath needs to be stripped, the two optical fibers are sleeved into two hollow tubes, the exposed optical fibers are positioned in a splitter for protection, and meanwhile, the splitter positions the end parts of the rest sheaths and the end parts of the hollow tubes. Although this way can realize branching well, when entering home, the branching device cannot penetrate into the pipe fitting or cannot smoothly penetrate the pipe (possibly hooking other cables in the pipe fitting), and is very inconvenient in the actual use process.
[ Utility model ] content
The utility model aims to solve the technical problem that overcome prior art not enough and provide a two core rubber-insulated-wire fiber branch structure that the volume is littleer.
Solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a twin-core rubber-insulated-wire optical fiber branch structure, including the double-fiber rubber-insulated-wire optical cable, branch cover and two branch sleeve pipes, the double-fiber rubber-insulated-wire optical cable includes the sheath and is located two optic fibre in the middle of the sheath, the tip of two optic fibre is worn out from the right-hand member of sheath and is penetrated respectively in the middle of two branch sleeve pipes, the right-hand member of sheath inserts in the branch cover from the left end of branch cover, the left end of two branch sleeve pipes is closed together from the right-hand member of branch cover and is inserted in the branch cover, the right-hand member of branch.
The utility model has the advantages that:
the sheaths at the end parts of the two optical fibers are stripped, so that the end parts of the two optical fibers in the middle of the sheaths are exposed, and the end parts of the two optical fibers can be respectively and smoothly inserted into the middle of the two branch sleeves. The left end of the branch sleeve positions the right end of the sheath, and the right end of the branch sleeve positions the left end of the branch sleeve, so that the relative position between the right end of the sheath and the left end of the branch sleeve is fixed, the optical fibers exposed outside the sheath and the branch sleeve are prevented from being damaged due to movement relative to the sheath and the branch sleeve, the branch sleeve protects the optical fibers from the outside, and the basic function of the double-core rubber-insulated-wire optical fiber branch structure is realized through the structure. The left ends of the two branch sleeves are closed, so that the distance between the left ends of the two branch sleeves is eliminated, the design width of the branch sleeve is reduced, the branch sleeve is miniaturized, and the manufacturing cost of the branch sleeve is reduced. Meanwhile, the left ends of the two branch sleeves can be matched with each other for limiting after being closed, the left ends of the two branch sleeves can be positioned at the same time only by one positioning hole at the right end of the branch sleeve, the positioning structure of the branch sleeve is simplified, and the left ends of the two branch sleeves can be placed into the positioning hole at the same time during positioning.
The branch sleeve comprises a hot melting pipe and a heat shrink pipe sleeved outside the hot melting pipe, and the inner wall of the heat shrink pipe is laminated with the outer wall of the hot melting pipe.
Leave the space between hot melt pipe inner wall and the sheath outer wall, laminate between branch's sheathed tube outer wall and the hot melt pipe inner wall.
The right-hand member outer wall of sheath is embraced tightly to the left end of pyrocondensation pipe, and the sheathed tube left end outer wall of branch is embraced tightly to the right-hand member of pyrocondensation pipe.
The right-hand member of sheath is sealed with the left end of pyrocondensation pipe, and the sheathed tube left end of branch is sealed with the right-hand member of pyrocondensation pipe.
The pyrocondensation pipe includes the center tube, is located the first toper pipe of center tube left end and is located the second conical pipe of center tube right-hand member, and the left end internal diameter of first toper pipe is less than the right-hand member internal diameter of first toper pipe, and the left end internal diameter of second conical pipe is greater than the right-hand member internal diameter of second conical pipe, and the outer wall laminating of center tube inner wall and hot melt pipe, the both ends of hot melt pipe push up respectively on the tip inner wall of first toper pipe and second conical pipe.
The right-hand member of optic fibre extends to branch sheathed tube right-hand member, and branch sheathed tube right-hand member is provided with fiber connector.
Other features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention will be further explained with reference to the drawings:
FIG. 1 is a schematic plane view of a branch structure of a dual core covered optical fiber according to the prior art in a comparative example of the present invention;
fig. 2 is a schematic plane structure diagram of a branch structure of a dual-core covered optical fiber according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 2.
[ detailed description ] embodiments
The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
In the following description, the appearances of the indicating orientation or positional relationship, such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are only for convenience in describing the embodiments and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
Comparative example:
referring to fig. 1, in the prior art, the dual-core covered optical fiber branching structure includes a dual-fiber covered optical cable, a rectangular parallelepiped splitter 5, two branching sleeves 3, and two optical fiber connectors 4. The double-fiber covered wire optical cable comprises a sheath 1 and two optical fibers 2 positioned in the middle of the sheath 1, the right ends of the sheath 1 are stripped, so that the right ends of the two optical fibers 2 are exposed, the right ends of the two optical fibers 2 penetrate into the left ends of two branch sleeves 3 respectively, and two optical fiber connectors 4 are installed at the right ends of the two branch sleeves 3 respectively. The left ends of the two branch sleeves 3 and the right end of the rest part of the sheath 1 are locked and positioned by a branching device 5. Three positioning holes are formed in the corresponding branching devices 5, three times of positioning operation is needed to be carried out, the right end of the sheath 1 and the left ends of the two branching sleeves 3 are respectively installed at the three positioning holes, and the positioning operation is relatively complex. Meanwhile, as the two branch sleeves 3 are separated from each other, a certain distance is reserved between the two positioning holes at the right end of the splitter 5, so that the size of the splitter 5 is large, and the splitter 5 is difficult to penetrate in the house.
Example (b):
referring to fig. 2-3, the present embodiment provides a dual-core covered optical fiber branch structure, which includes a dual-fiber covered optical cable, a branch jacket and two branch sleeves 3.
Double-fiber rubber-insulated-wire cable includes sheath 1 and is located two optic fibre 2 in the middle of sheath 1, and the right-hand member of two optic fibre 2 all wears out from the right-hand member of sheath 1 to penetrate two branch sleeve pipes 3 from the left end of two branch sleeve pipes 3 respectively in the middle of, the right-hand member of every optic fibre 2 extends to the right-hand member that corresponds branch sleeve pipe 3, and the right-hand member of every branch sleeve pipe 3 all is provided with fiber connector 4.
The branch sleeve is roughly tubular, the left end and the right end of the branch sleeve are respectively provided with a positioning hole, the right end of the sheath 1 is inserted into the branch sleeve from the positioning hole at the left end of the branch sleeve, the left end of the sheath 1 is positioned by the left end of the branch sleeve, the left ends of the two branch sleeves 3 are closed, and are simultaneously inserted into the branch sleeve from the positioning hole at the right end of the branch sleeve, and the left ends of the two branch sleeves 3 are clamped together by the right end of the branch sleeve so as to simultaneously position the left ends of the two branch sleeves 3. The optical fiber 2 between the right end of the jacket 1 and the left end of the branched jacket 3 is located in the middle of the branched jacket, and the branched jacket protects the optical fiber 2. The branch sleeve fixes the relative position between the right end of the sheath 1 and the left end of the branch sleeve 3, and prevents the optical fiber 2 in the branch sleeve from being damaged due to bending movement in the branch sleeve, thereby improving the stability and the service life of the optical fiber 2 and ensuring the optical fiber branch function.
The right end of the branch sleeve keeps the left ends of the two branch sleeves 3 in a close state, so that the distance between the left ends of the two branch sleeves 3 is eliminated, the requirement on the inner diameter of the branch sleeve is reduced, the branch sleeve is miniaturized, the inner diameter of the branch sleeve is approximately equal to the sum of the diameters of the two branch sleeves 3, and the manufacturing cost of the branch sleeve is reduced. In the process of entering a house, the branch sleeve with smaller volume can be more easily penetrated.
The branched jacket includes a heat fusion pipe 52 and a heat shrinkage pipe 51.
After the double-fiber rubber-insulated-wire optical cable is branched on the two branch sleeves 3, the left end of the sheath 1 penetrates through the middle of the hot melting pipe 52, then the hot melting pipe 52 moves rightwards and the left ends of the two branch sleeves 3 are closed together until the inner wall of the right end of the hot melting pipe 52 simultaneously blocks the left ends of the two branch sleeves 3, so that the inner wall of the right end of the hot melting pipe 52 and the outer wall of the left end of the branch sleeve 3 are tightly attached, and the left ends of the two branch sleeves 3 are tightly clamped together. The inner diameter of the respective thermofusion tube 52 is equal to or slightly smaller than the sum of the outer diameters of the two branch sleeves 3. Meanwhile, in order to allow the heat fusion pipe 52 to smoothly move on the jacket 1, a gap is left between the inner wall of the heat fusion pipe 52 and the outer wall of the jacket 1.
And then moving a round tubular heat shrinkable tube 51 with an inner diameter slightly larger than the outer diameter of the hot melt tube 52 from the left end of the sheath 1 to the right to sleeve outside the hot melt tube 52, wherein the length of the heat shrinkable tube 51 is larger than that of the hot melt tube 52, and both ends of the hot melt tube 52 are arranged between both ends of the heat shrinkable tube 51. At this time, the heat shrinkable tube 51 is heated, and the heat shrinkable tube 51 gradually shrinks and deforms until the inner wall of the heat shrinkable tube 51 is attached to the outer wall of the heat fusion tube 52, and the left end of the heat shrinkable tube 51 is attached to the right end outer wall of the sheath 1, so that the right end of the sheath 1 is positioned.
Preferably, after the heat shrinkable tube 51 is heated, the right end of the sheath 1 seals the left end of the heat shrinkable tube 51, and the right end of the heat shrinkable tube 51 is deformed to tightly hold the two branch sleeves 3, so that the right end of the heat shrinkable tube 51 is sealed by the two branch sleeves 3, and at this time, the right end of the heat shrinkable tube 51 can also play a role in positioning the left end of the branch sleeve 3, and the contamination can be prevented from entering the branch sleeves after the two ends of the heat shrinkable tube 51 are sealed.
The heat-fusible tube 52 plays a role of a skeleton in the process of heating the heat-shrinkable tube 51, so as to ensure the basic shape of the heat-shrinkable tube 51 after heat shrinkage, and the position where the end of the heat-shrinkable tube 51 starts to shrink when heated is the end of the heat-fusible tube 52.
The heat shrinkable tube 51 after heat shrinkage includes a central tube 511, a first tapered tube 512 at the left end of the central tube 511, and a second tapered tube 513 at the right end of the central tube 511. The inner diameter of the first tapered tube 512 is gradually reduced from right to left, the edge of the left end opening of the first tapered tube 512 holds the outer wall of the right end of the sheath 1, and the right end opening of the first tapered tube 512 is located at the left end of the thermofussion tube 52. The inner diameter of the second tapered pipe 513 gradually decreases from left to right, the left end opening of the second tapered pipe 513 is located at the right end of the hot melting pipe 52, and the right end opening of the second tapered pipe 513 is not a standard circular hole but a hole matched with the outer wall shapes of the two branch sleeves 3, so that the two branch sleeves 3 can seal the right end opening of the second tapered pipe 513. The inner wall of the central tube 511 is attached to the outer wall of the hot melting tube 52, two ends of the hot melting tube 52 are respectively supported on the right end opening edge of the first tapered tube 512 and the left end opening edge of the second tapered tube 513, and the hot melting tube 52 is axially and radially positioned by the heat shrinkable tube 51 so as to prevent the hot melting tube 52 from being separated from the heat shrinkable tube 51 and ensure the stable structure of the branch sleeve.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (7)
1. The utility model provides a two core rubber-insulated-wire optical fiber branch structure, a serial communication port, including two fine rubber-insulated-wire optical cables, branch cover and two branch sleeve pipes, two fine rubber-insulated-wire optical cables include the sheath and are located two optic fibre in the middle of the sheath, the tip of two optic fibre is worn out from the right-hand member of sheath and is penetrated respectively in the middle of two branch sleeve pipes, the right-hand member of sheath inserts in the branch cover from the left end of branch cover, the left end of two branch sleeve pipes is closed together from the right-hand member of branch cover and is inserted in the branch cover, the right-hand member of branch cover presss from both sides the left end of two branch sleeve pipes tightly.
2. The bifilar rubber-insulated-wire optical fiber branch structure of claim 1, wherein the branch sleeve comprises a hot-melting tube and a heat shrink tube sleeved outside the hot-melting tube, and an inner wall of the heat shrink tube is attached to an outer wall of the hot-melting tube.
3. The bifilar-rubber-insulated-wire optical fiber branching structure of claim 2, wherein a gap is left between the inner wall of the hot-melt pipe and the outer wall of the sheath, and the outer wall of the branching sleeve and the inner wall of the hot-melt pipe are attached.
4. The bifilar rubber-insulated-wire optical fiber branch structure of claim 3, wherein the left end of the heat shrink tube tightly embraces the right end outer wall of the sheath, and the right end of the heat shrink tube tightly embraces the left end outer wall of the branch sleeve.
5. The double-core rubber-insulated-wire optical fiber branching structure of claim 4, wherein the heat-shrinkable tube comprises a central tube, a first tapered tube located at the left end of the central tube and a second tapered tube located at the right end of the central tube, the inner diameter of the left end of the first tapered tube is smaller than that of the right end of the first tapered tube, the inner diameter of the left end of the second tapered tube is larger than that of the right end of the second tapered tube, the inner wall of the central tube is attached to the outer wall of the hot-melting tube, and two ends of the hot-melting tube are respectively supported against the inner walls of the ends of the first tapered tube and the second tapered tube.
6. The bifilar rubber-insulated-wire fiber branch structure of claim 4, wherein the right end of the sheath seals the left end of the heat shrink tube, and the left end of the branch sleeve seals the right end of the heat shrink tube.
7. The bifilar-covered fiber optic branching structure of any of claims 1-6, wherein a right end of the optical fiber extends to a right end of a branching ferrule, the right end of the branching ferrule being provided with a fiber optic connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081025.9U CN213843625U (en) | 2020-12-18 | 2020-12-18 | Double-core rubber-insulated-wire optical fiber branch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081025.9U CN213843625U (en) | 2020-12-18 | 2020-12-18 | Double-core rubber-insulated-wire optical fiber branch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213843625U true CN213843625U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023081025.9U Active CN213843625U (en) | 2020-12-18 | 2020-12-18 | Double-core rubber-insulated-wire optical fiber branch structure |
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| Country | Link |
|---|---|
| CN (1) | CN213843625U (en) |
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