CN203324547U - Novel FTTH (Fiber to the Home)-used 8-shaped optical cable and die thereof - Google Patents
Novel FTTH (Fiber to the Home)-used 8-shaped optical cable and die thereof Download PDFInfo
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- CN203324547U CN203324547U CN2013204538902U CN201320453890U CN203324547U CN 203324547 U CN203324547 U CN 203324547U CN 2013204538902 U CN2013204538902 U CN 2013204538902U CN 201320453890 U CN201320453890 U CN 201320453890U CN 203324547 U CN203324547 U CN 203324547U
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Abstract
The utility model discloses a novel FTTH-used 8-shaped optical cable and a die thereof, which belong to optical communication technology, and solve the problem that a present 8-shaped optical cable cannot satisfy the requirements of small external diameter and low weight for a mini optical cable. A KFRP (Kevlar Fiber Reinforced Plastics) messenger wire is wrapped in a sheath of a hoisting part of the optical cable, three to four lapped units are wrapped in a sheath of a cable part, and a KFRP central reinforced piece is arranged at the center of the lapped units, wherein the diameter of the cable part is 8+/-2mm, and the weight of the optical cable is 50+/-5kg per km. The novel FTTH-used 8-shaped optical cable has the advantages that the external diameter of the optical cable is small, the amount of fiber cores is large, production process is simple, and a half-dry structure is helpful for constructional maintenance and suitable for FTTH.
Description
Technical field
The utility model belongs to optical communication technique, specifically for novel 8 word optical cable and the moulds of FTTH.
Background technology
Along with the development of the communication technology, people have been ubiquitous to the demand of information, always can, force the Networks of Fiber Communications develop rapidly, the optical cable miscellaneous that meets network demand arises at the historic moment.
At present, China has huge broadband user colony, and the market development potentiality are very large, is considered to the new hot zones that the FTTx development is built.Within 2012, Chinese netizen's total number of persons reaches 5.64 hundred million, occupies the first in the world, and wherein the broadband number of netizen reaches 1.63 hundred million.But Internet penetration is on the low side, only have 39.9%.Therefore from potential number of users, the FTTx market development of China has a high potential.
So the demand of micro optical cable increases greatly, micro optical cable requires: external diameter is little, lightweight, and dry type or half dry type structure, due to double indoor and outdoors, so require fire-retardant.
Current 8 word optical cables be generally GYTC8S optical cable, GYXTC8S optical cable, the GYTC8S cable outer diameter is all more than 12mm, more than weight 150kg/km, this kind of cable outer diameter is larger, Heavy Weight; Although GYXTC8S optical cable external diameter reduces to some extent, the core number of optical cable generally mostly is most 12 cores, can not meet our current needs.This two classes optical cable is little for requiring external diameter, and under lightweight condition, advantage is not too obvious.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome existing 8 word optical cables to be difficult to meet that the micro optical cable external diameter is little, the defect of lightweight requirement, and a kind of novel 8 word optical cable and moulds for FTTH are provided.
For achieving the above object, novel 8 word optical cables for FTTH of the present utility model, its cross section is the figure of eight, its outermost layer is sheath, its top is lifting section, and its underpart is optical cable section, it is characterized in that: coat the KFRP messenger wire in the sheath of described lifting section, lay KFRP central reinforce member and the 3-4 rhizosphere pine cover unit around the KFRP central reinforce member in the sheath of described optical cable section, filling cable core water-blocking material between the sheath of described optical cable section and pine cover unit.
Optimization technique means as the novel 8 word optical cables for FTTH of the present utility model: the diameter of described optical cable section is 8 ± 2mm.Described pine cover unit comprises ferrule and is distributed in the optical fiber in ferrule, fills fine cream between described optical fiber.The weight of this optical cable is 50 ± 5kg/km.
For achieving the above object, novel 8 word optical cable moulds for FTTH of the present utility model, comprise external mold, internal mold, described external mold has internal taper hole, the small end of described internal taper hole is established figure of eight through hole, described internal mold has a frustum that can stretch into described internal taper hole, the messenger wire that the small end of described frustum is established corresponding described figure of eight through hole wears pipe, cable core wears pipe, form the extrusion molding space between the hole wall of described frustum and internal taper hole, it is characterized in that: the tapering of described frustum is 15 ± 1 °.
Optimization technique means as the novel 8 word optical cable moulds for FTTH of the present utility model: the large 1-3 ° of tapering of the more described frustum of tapering of described internal taper hole.The distance that described frustum is stretched out in the outer end that described messenger wire wears pipe is 8-10mm; The distance that described frustum is stretched out in the outer end that described cable core wears pipe is 16-18mm; The length of described figure of eight through hole is 15-17mm; The outer end that described messenger wire wears pipe is positioned at described figure of eight through hole, and the distance that described messenger wire wears between the outer end of the outer end of pipe and described figure of eight through hole is 9-10mm.
The beneficial effects of the utility model are:
1) cable outer diameter is little, and fiber number is many, and production technology is simple;
2) the half dry type structure, be beneficial to construction maintenance, is applicable to that Fiber to the home.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the utility model optical cable;
Fig. 2 is the another kind of structural representation of the utility model optical cable;
Fig. 3 is the structural representation of the utility model external mold;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the structural representation of the utility model internal mold;
Fig. 6 is the right view of Fig. 5;
Fig. 7 is the schematic diagram that the internal mold of the external mold of Fig. 3 and Fig. 5 is assembled together;
The number in the figure explanation:
The 01-sheath; 02-lifting section; 03-optical cable section; The 04-KFRP messenger wire; The 05-KFRP central reinforce member; 06-pine cover unit, 61-ferrule, 62-optical fiber, the fine cream of 63-; 07-cable core water-blocking material; The diameter of D-optical cable section;
The A-external mold, A1-internal taper hole, A2-figure of eight through hole;
The B-internal mold, the B1-frustum, the B2-messenger wire wears pipe, and the B3-cable core wears pipe;
C-extrusion molding space;
The tapering of α-internal taper hole, the tapering of β-frustum, the length of L1-figure of eight through hole, the L2-messenger wire wears the distance that frustum is stretched out in the outer end of pipe, the L3-cable core wears the distance that frustum is stretched out in the outer end of pipe, and the L4-messenger wire wears the distance between the outer end of the outer end of pipe and figure of eight through hole.
Embodiment
Below in conjunction with Figure of description, the utility model is described further.
Novel 8 word optical cables for FTTH of the present utility model, as shown in Figure 1, 2, its cross section is the figure of eight, its outermost layer is sheath 01, its top is lifting section 02, its underpart is optical cable section 03, coat KFRP messenger wire 04 in the sheath of lifting section 01, laying KFRP central reinforce member 05 and 3-4 rhizosphere in the sheath of optical cable section 03 Figure 1 shows that 3 pine cover unit, Figure 2 shows that 4 pine cover unit around the pine cover unit 06(of KFRP central reinforce member 05), fill cable core water-blocking material 07 between the sheath of optical cable section 03 and pine cover unit.General, KFRP central reinforce member 05, pine cover unit 06 form cable core.
Further, the diameter D of optical cable section 03 is 8 ± 2mm.Pine cover unit 06 comprises ferrule 61 and is distributed in the optical fiber 62 in ferrule 61, fills fine cream 63 between optical fiber 62.The weight of this optical cable is 50 ± 5kg/km.
The utility model has reduced the quantity of stranded unit and gasket for packing, and external diameter reduces 30%.For the weight that reaches optical cable is lighter, messenger wire and central reinforce member all adopt the KFRP material.Optical cable weight guarantees in about 50kg/km, weight reducing 65%.
KFRP is aramid fiber reinforcing optical cable reinforced core, and it has following characteristics:
1) high-strength light: aramid fiber reinforcing optical cable reinforced core density is low, intensity is high, and intensity or modulus all strengthen optical cable strengthening core considerably beyond steel wire and glass fibre;
2) low bulk: aramid fiber reinforcing optical cable reinforced core is in wide temperature range, and linear expansion coefficient is less than steel wire and glass fibre strengthens optical cable strengthening core;
3) shock-resistant, anti-fracture: aramid fiber reinforcing optical cable reinforced core not only has the pulling strengrth (1700Mpa) of superelevation, and shock-resistant, anti-fracture, even still can keep the pulling strengrth of 1300Mpa left and right in the situation that fracture;
4) pliability is good: the aramid fiber reinforcing optical cable reinforced core quality is soft, is easy to bending, and its minimum bend diameter is only 24 times of diameter;
5) make the inside cable compact conformation, attractive in appearance, the bending property excellence, be particularly suitable for the wiring of complex indoor environment.
Novel 8 word optical cable moulds for FTTH of the present utility model, comprise external mold A, internal mold B, external mold A(is referring to Fig. 3, Fig. 4) there is internal taper hole A1, the small end of internal taper hole A1 is established figure of eight through hole A2, internal mold B(is referring to Fig. 5, Fig. 6) there is a frustum B1 that can stretch into internal taper hole A1, the messenger wire that the small end of frustum B1 is established corresponding figure of eight through hole A2 wears pipe B2, cable core wears pipe B3, form extrusion molding space C(between the hole wall of frustum B1 and internal taper hole A1 referring to Fig. 7), the tapering β of frustum B1 is 15 ± 1 ° (referring to Fig. 5).
Further, the tapering α (referring to Fig. 3) of internal taper hole A1 is than the large 1-3 ° of tapering β of frustum.The distance L 2 that frustum B1 is stretched out in the outer end that messenger wire wears pipe B2 is 8-10mm; The distance L 3 that frustum B1 is stretched out in the outer end that cable core wears pipe B3 is 16-18mm; The length L 1 of figure of eight through hole A2 is 15-17mm; The outer end that messenger wire wears pipe B2 is positioned at figure of eight through hole A2, and the distance L 4 that messenger wire wears between the outer end of outer end and figure of eight through hole A2 of pipe B2 is that 9-10mm(is referring to Fig. 7).
Because cable core is nonmetal, and do not have metal tape to carry out armouring, so cable core is soft, just easily cause " 8 " character segment crooked in process of production, the optical cable appearance is the situation such as rounding not.Internal mold of the present utility model adopts plsitive mold, and excessive but the angle (tapering of frustum) of extruding is difficult for, angle is excessive, and protective cover material pressure when extruding is just large, just large to the pressure of cable core, but also can cause " 8 " character segment crooked.Angle too small, optical cable appearance rounding not after sheath, the jog branch of cable core presents.Through checking, above-mentioned interior mould parameter is most suitable.For coordinating internal mold, the external mold size also will accurately be controlled, so that the optical cable moulding is better, the length of above-mentioned figure of eight through hole is most suitable.Interior external mold confined state, according to messenger wire, wear keep 9-10mm between the outer end of the outer end of pipe and figure of eight through hole distance for good, otherwise, after sheath, the optical cable surface is rounding not, crooked situation may appear in " 8 " character segment.
Due to cable core structure with to protect the messenger wire reinforcement outward be all to adopt nonmetallic materials, so the cable core unwrapping wire adopts zero tension force, reinforcement tension force is that 20N is good.
Claims (7)
1. for the novel 8 word optical cables of FTTH, its cross section is the figure of eight, its outermost layer is sheath (01), its top is lifting section (02), its underpart is optical cable section (03), it is characterized in that: coat KFRP messenger wire (04) in the sheath of described lifting section (02), lay KFRP central reinforce member (05) and the 3-4 rhizosphere pine cover unit (06) around the KFRP central reinforce member in the sheath of described optical cable section (03), between the sheath of described optical cable section (03) and pine cover unit (06), fill cable core water-blocking material (07).
2. novel 8 word optical cables for FTTH according to claim 1, it is characterized in that: the diameter (D) of described optical cable section (03) is 8 ± 2mm.
3. novel 8 word optical cables for FTTH according to claim 1 is characterized in that: described pine cover unit (06) comprises ferrule (61) and is distributed in the optical fiber (62) in ferrule, filling fine cream (63) between described optical fiber (62).
4. novel 8 word optical cables for FTTH according to claim 1, it is characterized in that: the weight of this optical cable is 50 ± 5kg/km.
5. for the novel 8 word optical cable moulds of FTTH, comprise external mold (A), internal mold (B), described external mold (A) has internal taper hole (A1), the small end of described internal taper hole (A1) is established figure of eight through hole (A2), described internal mold (B) has a frustum (B1) that can stretch into described internal taper hole (A1), the messenger wire that the small end of described frustum (B1) is established corresponding described figure of eight through hole (A2) wears pipe (B2), cable core wears pipe (B3), form extrusion molding space (C) between the hole wall of described frustum (B1) and internal taper hole (A1), it is characterized in that: the tapering of described frustum (β) is 15 ± 1 °.
6. the novel 8 word optical cable moulds for FTTH according to claim 5, is characterized in that: the large 1-3 ° of the tapering (β) of the more described frustum of the tapering of described internal taper hole (α).
7. novel 8 word optical cable moulds for FTTH according to claim 5 is characterized in that: the distance (L2) that described frustum (B1) stretched out in the outer end that described messenger wire wears pipe (B2) is 8-10mm; The distance (L3) that described frustum (B1) stretched out in the outer end that described cable core wears pipe (B3) is 16-18mm; The length (L1) of described figure of eight through hole (A2) is 15-17mm; The outer end that described messenger wire wears pipe (B2) is positioned at described figure of eight through hole (A2), and the distance (L4) that described messenger wire wears between the outer end of the outer end of pipe (B2) and described figure of eight through hole (A2) is 9-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204538902U CN203324547U (en) | 2013-07-25 | 2013-07-25 | Novel FTTH (Fiber to the Home)-used 8-shaped optical cable and die thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013204538902U CN203324547U (en) | 2013-07-25 | 2013-07-25 | Novel FTTH (Fiber to the Home)-used 8-shaped optical cable and die thereof |
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| CN203324547U true CN203324547U (en) | 2013-12-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297874A (en) * | 2014-09-05 | 2015-01-21 | 宁波鑫通线缆有限公司 | Double-core butterfly optical cable production technology |
| CN108020893A (en) * | 2018-01-09 | 2018-05-11 | 国网湖北省电力有限公司孝感供电公司 | A kind of electric power optical cable melts fiber coating pipe and its manufacture method |
| CN108710186A (en) * | 2018-08-10 | 2018-10-26 | 浙江亨通光网物联科技有限公司 | Extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
| CN109991708A (en) * | 2019-03-27 | 2019-07-09 | 江苏通光信息有限公司 | Novel easily branched 8 shaped optical cable of one kind, molding die and its production technology |
| CN110244420A (en) * | 2019-06-17 | 2019-09-17 | 金陵科技学院 | The treatment process of PBT casing, the central-beam tube type fiber optic cable using and containing the PBT casing |
| CN115625868A (en) * | 2022-09-23 | 2023-01-20 | 四川天邑康和通信股份有限公司 | Butterfly-shaped optical cable apparatus for producing |
-
2013
- 2013-07-25 CN CN2013204538902U patent/CN203324547U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297874A (en) * | 2014-09-05 | 2015-01-21 | 宁波鑫通线缆有限公司 | Double-core butterfly optical cable production technology |
| CN108020893A (en) * | 2018-01-09 | 2018-05-11 | 国网湖北省电力有限公司孝感供电公司 | A kind of electric power optical cable melts fiber coating pipe and its manufacture method |
| CN108710186A (en) * | 2018-08-10 | 2018-10-26 | 浙江亨通光网物联科技有限公司 | Extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
| CN109991708A (en) * | 2019-03-27 | 2019-07-09 | 江苏通光信息有限公司 | Novel easily branched 8 shaped optical cable of one kind, molding die and its production technology |
| CN110244420A (en) * | 2019-06-17 | 2019-09-17 | 金陵科技学院 | The treatment process of PBT casing, the central-beam tube type fiber optic cable using and containing the PBT casing |
| CN115625868A (en) * | 2022-09-23 | 2023-01-20 | 四川天邑康和通信股份有限公司 | Butterfly-shaped optical cable apparatus for producing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
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| CX01 | Expiry of patent term |