CN201247335Y - Optic cable - Google Patents
Optic cable Download PDFInfo
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- CN201247335Y CN201247335Y CNU2008200052025U CN200820005202U CN201247335Y CN 201247335 Y CN201247335 Y CN 201247335Y CN U2008200052025 U CNU2008200052025 U CN U2008200052025U CN 200820005202 U CN200820005202 U CN 200820005202U CN 201247335 Y CN201247335 Y CN 201247335Y
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- optical cable
- winding part
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- nappe
- messenger wire
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Images
Classifications
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- 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
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4457—Bobbins; Reels
- G02B6/4458—Coiled, e.g. extensible helix
-
- 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
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
- G02B6/4472—Manifolds
- G02B6/4475—Manifolds with provision for lateral branching
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Catching Or Destruction (AREA)
Abstract
The utility model provides an optical cable, which can be compactly contained in a rolling part which is used to change the surplus length and to prevent the optical cable from injury of external force or birds and the like. The optical cable can be easily used in treatment such as erection operations, surplus length adjustment, transportation and the like. Optical cables (11 and 11') are provided with main body parts (12 and 12') which are composed of shells which are used to wrap optical fiber core wires. The optical cable is characterized in that one part of the optical cable is formed by the rolling part (17), the rolling part (17) is composed of a plurality of turns which are formed through rolling the diameter which is bigger than or equal to the admissible bending diameter of the optical fiber, and the rolling part is covered by a tubular cover body (19). Furthermore, spiral slots which are used to keep the turns of the rolling part (17) are formed on the inner surface of the tubular cover body (19).
Description
Technical field
The utility model relates to a kind of at the optical cable that uses when trunk cable is introduced user's dwelling house etc. via connector box.
Background technology
Recently, because the service of broadbands such as image transmission, IP phone, data communication enlarges, utilize the entrant of the data communication services towards family (FTTH:Fiber To The Home) that optical fiber carries out constantly to increase.In this FTTH, from being set up in aerial trunk cable when entering user's dwelling house etc. via connector box, use for example is called the optical cable of the optical cable of registering one's residence mostly.As following optical cable is introduced user's dwelling house H, for example shown in Figure 7, will be laid in the trunk cable C on the electric pole P etc. in street usually, utilize the coupling box branch that is called as connector box K, and the optical fiber that branches out is connected with the optical cable F that registers one's residence.
The optical cable of registering one's residence that uses when introducing this optical cable, the optical fiber that forms usually in the optical cable is 1～several less like this core numbers.Fig. 8 is the figure of an example of the common optical cable of registering one's residence of expression, and it is that the optical cable main part 2 of rectangle and circular messenger wire portion 3 are linked and incorporate structure by neck 4 that Fig. 8 (A) expression makes section.It is that circular optical cable main part 2 ' is similarly linked and incorporate structure by neck 4 with circular messenger wire portion 3 that Fig. 8 (B) expression makes section.
The optical cable main part 2 of Fig. 8 (A) forms at the both sides of optical fibre core 5 configuration tension element 6, and to make them be that the main part crust 7 (for example, long side is that 3mm, short brink are about 2mm) of rectangle coats by section.Optical fibre core 5 is that the glass fibre of 125 μ m is that protection coating about 250 μ m coats and to form by external diameter by making nominal outer diameter.Tension element 6 uses steel wires or high strength fibre is fixed by matrix resin and the nonmetal wire rod that forms.In addition, the otch of V font is set in the side of optical cable main part 2, utilizes this notch portion can easily main part crust 7 be torn and take out inner optical fibre core 5, carry out branch's connection or form line end.
The optical cable main part 2 ' of Fig. 8 (B) forms, and disposes high strength fibre 6 ' such as aromatic polyamide fibre around optical fibre core 5, and to make them be that circular main part crust 7 ' (for example, external diameter is about 2mm) coats by section.High strength fibre 6 ' has optical fibre core is cushioned function with tension element.
The periphery of messenger wire portion 3 by the Support Level 9 for example utilizing messenger wire crust 10 and will be formed by the steel wire about 1.2mm φ coats and forms.Main part crust 7,7 ' uses identical resin materials such as tygon, both forms to link via the narrow neck 4 of width, the disposable formation by extrusion modling with messenger wire crust 10.
In addition, be used for the inside cable of house service, can use with the optical cable main part after the messenger wire portion 3 of removing above-mentioned optical cable 2,2 ' state.This inside cable is used at centralized dwelling houses such as buildings, branches out optical fiber the trunk cable in entering building, and carries out optical fiber distributing to each dwelling house.
Relative with the increase in demand of above-mentioned optical cable installation, the laying operation of wish to register one's residence optical cable or inside cable is changed rapidly.Registering one's residence under the situation of operation from being set up in aerial trunk cable, under the situation of operating environment difference such on electric pole or the bucket car, carry out mostly, cut off optical cable, take out operation such as welding between optical fibre core, the optical fiber and consolidation process in the optical cable and be not easy with specified length, and spended time.For this reason, have a kind of method, it installs the joints of optical fibre at the two ends of the optical cable that cuts off with specified length in advance, realizes alleviating on-the-spot operation.
In the case, in advance the joints of optical fibre are installed at the optical cable two ends and are realized connecting the high efficiency of operation, simultaneously, on optical cable, curled portion is set and makes excess length variable, to absorb the error (for example, with reference to non-patent literature 1) of laying length.In addition, also have a kind of method, it implements the processing of curling on the whole length of optical cable, be wound on the messenger wire of prior setting, lay by stretching in the longitudinal direction, thereby the simplification (for example, with reference to patent documentation 1) of operation is laid in realization.
Patent documentation 1: the spy opens communique 2005-No. 292205
Non-patent literature 1: family Mao Banghong, and other 2 people " " substrate is whole
Effectively utilize The may と The Ru light ケ-Block Le skill Intraoperative ", NTT skill Intraoperative ジ ヤ-Na Le, the logical letter of the Electricity of civic organization mood Association meeting, in Dec, 2006, P.64-65 "
The utility model content
But, above-mentioned non-patent literature 1 disclosed optical cable, being laid in optical cable in the underground pipeline with gateway as object, but at the protection of the curled portion that is used to change excess length or accommodate open particularly.
In addition, patent documentation 1 disclosed optical cable is the optical cable that does not have messenger wire portion, is can be from being set up in the optical cable of registering one's residence in the air, and wire coils such as being laid in optical cable between the electric pole or messenger wire is laid around forming curled portion.This optical cable still exists owing to curl processing and need carry out winding work and at the problem in the processing of curl in the transportation processing part stretching, extension or bending etc. on the messenger wire of prior laying along whole length.
In addition, if will carry out the optical cable that curls is supported on the state that strips out and is set up on the aerial messenger wire etc., then may be because ice and snow is sticking pays or external pressure and crooked or cut off, in addition, may wave or vibrate and cause producing friction and sustaining damage by what blast produced.In addition, the coiling wire loop that may will be curled by birds such as crows is pullled or is moved back and forth as the material of the usefulness of nesting sometimes, in addition, also has insect problem such as nidificate on winding part.
The utility model is exactly In view of the foregoing to propose; its purpose is to provide a kind of optical cable; it can be accommodated compactly and be used to adjust the winding part of excess length and protect it not to be subjected to damages such as external force or birds, can easily lay processing such as operation, excess length adjustment, transportation.
The related optical cable of the utility model has the main part that is formed by crust covering optical fibre core, it is characterized in that, the part of optical cable is formed by winding part, this winding part is by constituting with the multi-turn wire turn that forms of reeling more than or equal to the diameter of allowing bending diameter of optical fiber, and this winding part is surrounded by the nappe of tubular.In addition, also can form the spiral groove of the wire turn that keeps winding part at the inside surface of the nappe of above-mentioned tubular.
Above-mentioned winding part can be processed to form by curling.In the winding part after the curling processing, on at least 1 position in centre position, make the coiling direction counter-rotating, or in order to make winding part when stretching along its length, do not produce in the coiling and reverse, and with the processing of after opposite direction is reversed, curling in advance of above-mentioned winding part, thereby reduce reversing that stretching by winding part causes.
In addition, in winding part, insert messenger wire, perhaps insert messenger wire, make wire turn be wound on messenger wire and stretch on every side by the guiding tube that is arranged in the winding part.In addition, prevent from the screen body that foreign matter enters to enter winding part in the setting of the two ends of nappe to prevent above-mentioned foreign matter.In addition, in the end of cable of a side joints of optical fibre are installed at least, to realize the shortening of activity duration.
The effect of utility model
According to the utility model, the winding part that the excess length of absorption optical cable installation error in length is used can prevent to cause damage by external force by nappe, in addition, can prevent that wire turn is loose, prevents that winding part stretches or be crooked in transportation.In addition, behind the erecting optical cables, can prevent from the infringement that is subjected to be suppressed at Min. in intrusions such as winding part accumulated snow, birds or insects.
Description of drawings
Fig. 1 is the figure of the summary of explanation embodiment of the present utility model.
Fig. 2 is the figure of an example of the related optical cable of explanation the utility model.
Fig. 3 is the figure of the curling processing of the cylindric winding part in explanation the utility model.
Fig. 4 is the figure that the example of counter-rotating portion is set on the winding part that is illustrated in the utility model.
Fig. 5 is the figure that inserts the example of messenger wire in the winding part that is illustrated in the utility model.
Fig. 6 is the figure of expression with the example of the nappe openings at two ends obturation in the utility model.
Fig. 7 is the figure of the method for registering one's residence of the existing optical cable of explanation.
Fig. 8 is the figure of the configuration example of the existing optical cable of registering one's residence of explanation.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.Fig. 1 (A) and Fig. 1 (B) are that explanation uses the related optical cable of the utility model to carry out the figure of the state that optical cable registers one's residence, and Fig. 1 (C) and Fig. 1 (D) are the figure of the configuration example of the optical cable that uses of expression the utility model.In the drawings, 11,11 ' expression optical cable, 12,12 ' expression main part, 13 expression messenger wire portions, 14 expression necks, the integrated linking portion of 15 expressions, 16 expression separating parts, 17 expression winding parts, the 18 expression joints of optical fibre, 19 expression nappes.
The employed optical cable 11 of the utility model for example is the optical cable with rectangle optical cable section identical with the optical cable of explanation among Fig. 8 (A) shown in Fig. 1 (C), or does not have the optical cable of messenger wire portion 13.Omit the detailed description of optical cable 11, and the main part 12 of optical cable forms more than or equal to 1 optical fibre core both sides configuration tension element, and to make them be that the main part crust (for example, long side is that 3mm, short brink are about 2mm) of rectangle coats by section.Optical fibre core is that the glass fibre of 125 μ m is that protection coating about 250 μ m coats and to form by external diameter by making nominal outer diameter.Tension element is formed by the fixing nonmetal wire rod of matrix resin by steel wire or with high strength fibre.In addition, also the V notched cut that can be provided for tearing in the side of optical cable main part 12 also can be the shape that does not have otch.
In addition, as other optical cables 11 ' that the utility model uses, shown in Fig. 1 (D), be optical cable with circular optical cable section identical with the optical cable of explanation among Fig. 8 (B).Omit the detailed description of this optical cable 11 ', and the main part 12 ' of optical cable forms dispose high strength fibre such as aromatic polyamide fibre around optical fibre core, and to make them be that circular main part crust (for example, external diameter is about 2mm) coats by section.High strength fibre has optical fibre core is cushioned and as the function of tension element.
Above-mentioned optical cable 11,11 ' messenger wire portion 13 for example coat by the peripheries such as steel wire about utilizing the messenger wire crust with 1.2mm φ and form.Aforementioned body portion 12,12 ' crust and the crust of messenger wire portion 13 use identical resin material disposable formation by extrusion modling such as tygon, main part 12,12 ' and messenger wire portion 13 between via the narrow neck 14 integrated bindings of width.Thus, constitute make main part 12,12 ' and messenger wire portion 13 between integrated binding, but can also cut off neck 14 and they are easily separated with hand as required.
The related optical cable of the utility model is shown in Fig. 1 (A), for example as from being erected at trunk cable C on the electric pole P to the optical cable use of registering one's residence of introducings optical fiber such as dwelling house H.The fiber optic tap that carries out from trunk cable C is undertaken by connector box K, and the optical fiber that branches out is connected with optical cable 11,11 ' optics.Optical cable 11,11 ' by main part 12,12 ' and the part 15 of messenger wire portion 13-body binding, and main part 12,12 ' and messenger wire portion 13 separated portions 16 constitute.On the main part 12,12 ' of separating part 16,, form the cylindric winding part 17 that produces excess length to be wound on the form in the isolated messenger wire portion 13.This winding part 17 surrounds protection by nappe 19 described later.
Trunk cable C or other structure mounting fixing parts R that messenger wire portion 13 is provided with in advance by utilization, and lay along the laying route tensioning of optical cable.On the trunk cable C that is provided with in advance, be laid with under the situation of spiral suspension bracket S, also can utilize this spiral suspension bracket S to lay optical cable 11,11 '.In addition,, the joints of optical fibre 18 are installed on a side end at least and are laid, thereby realize laying the shortening of operation preferably by in advance optical cable 11,11 ' being cut into the length of regulation.In addition, the joints of optical fibre 18 can be installed at operation field, but also can be standby with prior mounted state.
The nappe 19 of winding part 17 and this winding part 17 of encirclement is laid in Fig. 1 (A) near the optical cable end side of dwelling house side H, but also can be laid near the connector box K side shown in Fig. 1 (B).This is to be connected with connector box K side by which that main part 12,12 ' part 15 is arranged at integrated binding and make main part 12,12 ' separated portions 16, the situation of the laying route of optical cable etc. is reconnoitred, and the initiating terminal when selecting to lay determines.In addition, also can according to be from about a direction, or optical cable is pulled out from winding part 17 from this both direction, and change winding part 17 and cover the position of the nappe 19 of this winding part 17.
Fig. 2 is the figure of an example of the related optical cable of explanation the utility model.The example that does not have messenger wire portion 13 of explanation among illustrated optical cable presentation graphs 1 (C) and Fig. 1 (D), be equal to only illustrate make main part 12,12 ' and messenger wire portion 13 separated portions 16 in main part 12,12 '.This optical cable shown in Fig. 2 (A) constitutes, with main part 12, a part of 12 ' and even integral body is wound as cylindric and form winding part 17, this winding part 17 is housed in the nappe 19 or surrounds, to keep the reeling condition of winding part 17 by nappe 19.
By utilizing the above-mentioned nappe 19 encirclement winding parts 17 that tubular is accommodated part 19a that have,, also can keep the reeling condition of winding part 17 even do not carry out curling processing described later.Processing just can form the winding part 17 of generation excess length if do not curl, and then when pulling out winding part, can make and set up Shi Buhui and produce distortion owing to unclamping free end, is easy to suppress the increase of loss.
In addition, shown in Fig. 2 (B), also can make the inside surface of accommodating part 19a of the tubular of nappe 19, become the shape that is provided with spiral groove 19d.By this spiral helicine groove 19d, can accommodate winding part 17 with the state of proper alignment, so that the wire turn of the winding part 17 of being accommodated can not produce winding.
Especially, using under the situation of steel wire, because rigidity is big and show as winding diameter is flexibly increased, so keep winding form and accommodate in mode with the inside surface butt of nappe 19 as the tension element of optical cable.Thus, spiral helicine groove 19c can be set by inside surface, each wire turn is fitly arranged automatically by groove 19c, improve the accommodating property of winding part 17 at nappe 19.
Above-mentioned cylindric winding part 17 is reeled with the diameter D that allows bending diameter more than or equal to optical cable.The bending diameter D of preferred this moment, it is to be less than or equal to the loss that can have problems on actual use the under the state that winding part 17 is launched that loss is suppressed.For example, preferably using at wavelength is the optical fibre core that 1.55 μ m, the bending diameter bending loss during as 30mm is less than or equal to the 0.5dB/10 circle.In addition, preferably use that to be at wavelength that 1.55 μ m, the bending diameter bending loss during as 15mm is less than or equal to the 0.5dB/10 circle such, allow that bending diameter is the optical fibre core of minor diameter.
In addition, as the optical fiber of the optical cable that satisfies above-mentioned condition, for example preferably use when wavelength is 1.3 μ m according to the definition of Petermann-I, mode field diameter (MFD:Mode FieldDiameter) is less than or equal to the optical fiber of 9.0 μ m.In addition, the mode field diameter when making wavelength be 1.55 μ m is 8.0 μ m, can suppress because microbend or the bending loss that side pressure produces makes and allow that bending diameter diminishes.
According to foregoing, make optical cable 11,11 ' bending diameter D for for example about 30mm.In the case, the length L by making the winding part 17 on the cylinder can produce the excess length about 20m for for example (about 300 circles) about 1m.
, returning Fig. 1 here, by from being set up in optical cable that aerial trunk cable C produces to registering one's residence of dwelling house H 11,11 ' laying distance, for example is about 45～50m.In the case, make main part 12,12 ' and the part 15 of messenger wire portion 13 integrated bindings for about 40m, main part 12,12 ' and messenger wire portion 13 separated portions 16 be about 10m, be wound as this part cylindric and as the excess length amount.In addition, preferably the joints of optical fibre 18 are installed in advance at main part 12,12 ' two ends.
Fig. 3 is that expression is by the curling figure that is processed to form an example of winding part 17 cylindraceous.Winding part 17 can use related nappe of the utility model or boundling band to keep reeling condition, but only reel merely wire turn is intersected, and when accommodating to above-mentioned nappe, just more is difficult to keep with cylindric fitly the arrangement.Thus, shown in Fig. 3 (A), the main part that does not have curl characteristics 12,12 ' that will separate with messenger wire portion 13 uses cylindric coiling mould 20 to arrange with specified diameter and reels.
Then, shown in Fig. 3 (B), carry out heat treated by heating arrangement 21 and, the wire turn of winding part 17 is fixed as with cylindric arrangement, keep its reeling condition the processing of curling of the main part 12 that comprises outer skin portion, 12 ' integral body.This can be flexible as coil spring along the length direction of messenger wire portion 13 through the winding part cylindraceous 17 of the processing of curling.As heating unit 21a, can use the whole bag of tricks such as heater heats or infrared ray heating.
In addition, in the optical cable 11 shown in Fig. 1 (C), use at the tension element of main part 12 under the situation of steel wire,, can't be difficult to carry out the shape maintenance the tension element processing of curling to the curl heating of degree of processing of resin.Therefore, optical cable 11 is for example to use the optical cable that high strength fibre is formed by the nonmetal tension element of the fixing FRP of matrix resin as object.
Fig. 4 is the figure of other embodiments of expression winding part.Winding part 17 usually with coiling direction be a direction helical coil around, the lateral surface of wire turn all is positioned at the outside along whole wire turn, medial surface all is positioned at the inboard along whole wire turn.Therefore, stretch in the longitudinal direction, main part 12,12 ' is produced reverse, increase the loss of inner optical fibre core if winding part 17 two ends are fixed.Therefore,, above-mentioned reversing can be alleviated at least 1 position of the centre of winding part 17, the increase of loss can be reduced by the counter-rotating portion 22 that makes the coiling direction counter-rotating is set.In addition, under the situation that a plurality of counter-rotating portion 22 is set, counter-rotating portion 22 is set on the odd number position.
In addition, also can replace on winding part 17, being provided with counter-rotating portion 22, add man-hour but curl in that main part 12,12 ' is reeled, when reversing, reel in advance, the processing of curling then with when the stretching and winding part 17, can not make main part 12,12 ' produce and reverse.In addition, because optical fibre core and main part crust in the main part are one, so when laying, can reduce by the increase of reversing the loss that causes in that winding part 17 is pulled out.
After winding part 17 keeps winding form by above-mentioned curling processing, perhaps do not curl processing and utilize nappe 19 to surround the wire turn of reeling, become not can loosely with the state of cylindric arrangement maintenance.In addition, can insert the messenger wire portion 13 of separating part 16 in winding part 17, becoming shown in Fig. 1 (A) reels remains on state in the messenger wire portion 13.In addition, messenger wire portion 13 also can cooperate with the situation of operation field and adopts the form of not inserting in the winding part 17.
As above-mentioned winding part 17 is handled after, in optical cable 11,11 ', the part 15 of integrated binding is twined and boundling with specified diameter, in addition, will twine also boundling separately from winding part 17 extended separated messenger wire portions 13.By under this state, carrying out the harness keeping, can solve at the problem in the processing of winding part 17 elongations of accommodating or surrounding by nappe 19 in the transportation, bending etc.In addition, just do not having messenger wire portion originally, only under the situation of the optical cable that constitutes by main part, will twine and boundling with specified diameter, carrying out the harness keeping with the winding part 17 that surrounds by nappe except the part of the linearity the winding part 17.
Fig. 5 (A) is that expression messenger wire portion 13 inserts in the winding part 17, the wire turn of winding part is pulled out and is supported on the figure of the form in this messenger wire portion.Messenger wire portion 13 can be Fig. 1 (A) and messenger wire main part 12,12 ' separated portions 16, in addition, also can be the messenger wire of preparing separately.
In addition, because the winding part 17 that is made of the multi-turn wire turn keeps with cylindric arrangement by nappe 19, so can messenger wire portion 13 easily be inserted in the winding part 17 with the both ends open 19b of nappe 19 as guide portion.
Fig. 5 (B) is expression in order messenger wire to be easy to insert in the winding part 17 and the figure of the example that in advance guiding tube 22 is inserted.Can be as long as guiding tube 22 has from the length of the degree of passing between the both ends open 19b of nappe 19.The messenger wire portion 13 that is made of steel wire can be by guiding tube 22 guiding, successfully insert in the winding part 17 and are not stuck.After messenger wire portion 13 inserts in the winding part 17, guiding tube 22 can be stayed in the winding part 17, also can remove.
Fig. 6 is the figure of expression with the example of the both ends open obturation of nappe 19, and Fig. 6 (A) expression does not have the example of messenger wire portion, and the example of messenger wire portion is inserted in Fig. 6 (B) expression.At the two ends of nappe 19, form the main part 12 of erecting optical cables, extract extraction mouth, the opening 19b of wire turns 12 ' time in the nappe 19 that surrounds winding part 17 out.Preferred above-mentioned opening 19b forms bigger opening so that the wire turn of inside is extracted out like a cork, if but opening 19b is bigger, and then inside enters sleet easily, insect or birds are entered and nests.
For the problems referred to above, in the utility model, preferably after the wire turn of the winding part 17 that the lid 19 that will be covered surrounds is pulled out and is set up from opening 19b, the excess length of remaining wire turn as erecting optical cables is housed in the nappe 19, and makes openings at two ends 19b become state by screen body 23 obturations.In addition.Also can make screen body 23 have the function of the anchor clamps that are drawn out of as the wire turn that prevents winding part 17 behind the optical cable installation.
Claims (8)
1. optical cable, it has by crust and covers the main part that optical fibre core forms, it is characterized in that,
The part of optical cable is formed by winding part, and this winding part is by constituting with the multi-turn wire turn that forms of reeling more than or equal to the diameter of allowing bending diameter of optical fiber, and this winding part is surrounded by the nappe of tubular.
2. optical cable according to claim 1 is characterized in that,
Inside surface at the nappe of above-mentioned tubular forms the spiral helicine groove that keeps above-mentioned wire turn.
3. optical cable according to claim 1 is characterized in that,
In the above-mentioned winding part, at least 1 position in centre position, make the coiling direction counter-rotating.
4. optical cable according to claim 1 is characterized in that,
Above-mentioned winding part produces the side of reversing and reverses in the opposite direction in reeling when stretching along its length.
5. according to any described optical cable in the claim 1 to 4, it is characterized in that,
In above-mentioned winding part, insert messenger wire.
6. according to any described optical cable in the claim 1 to 4, it is characterized in that,
Configuration is used to make the guiding tube of messenger wire insertion in above-mentioned winding part.
7. according to any described optical cable in the claim 1 to 4, it is characterized in that,
Prevent the screen body that foreign matter enters in the setting of the two ends of above-mentioned nappe.
8. according to any described optical cable in the claim 1 to 4, it is characterized in that, in the end of cable of a side joints of optical fibre are installed at least.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007055962A JP2008216785A (en) | 2007-03-06 | 2007-03-06 | Optical cable |
| JP2007055962 | 2007-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247335Y true CN201247335Y (en) | 2009-05-27 |
Family
ID=39738293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200052025U Expired - Fee Related CN201247335Y (en) | 2007-03-06 | 2008-03-06 | Optic cable |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2008216785A (en) |
| CN (1) | CN201247335Y (en) |
| TW (1) | TW200900772A (en) |
| WO (1) | WO2008108421A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819078A (en) * | 2012-08-14 | 2012-12-12 | 江苏通鼎光电股份有限公司 | Round self-supporting indoor and outdoor drop cable |
| CN105954845A (en) * | 2016-06-23 | 2016-09-21 | 南京华信藤仓光通信有限公司 | Dual self-holding optical fiber ribbon type wiring optical cable |
| CN106483617A (en) * | 2016-12-12 | 2017-03-08 | 海鹰企业集团有限责任公司 | Excess fiber length production method |
| CN106680956A (en) * | 2017-03-17 | 2017-05-17 | 海鹰企业集团有限责任公司 | Integrated optical fiber extra length generating method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955211B (en) * | 2011-08-26 | 2014-10-29 | 上海宽岱电讯科技发展有限公司 | Combined butterfly-shaped optical cable |
| CN114167559A (en) * | 2021-11-11 | 2022-03-11 | 安徽电信规划设计有限责任公司 | Protection device for preventing overhead optical cable from being bitten by rats and pecked by birds |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000081531A (en) * | 1998-09-04 | 2000-03-21 | Nec Eng Ltd | Method for connecting optical parts by using tube housing type optical fiber |
| JP2000131582A (en) * | 1998-10-22 | 2000-05-12 | Hitachi Cable Ltd | Optical information receptacle |
| JP2004075226A (en) * | 2002-08-12 | 2004-03-11 | Daiden Co Ltd | Filamentary material bundle |
| JP2004219545A (en) * | 2003-01-10 | 2004-08-05 | Sumitomo Electric Ind Ltd | Optical fiber code |
| JP2005292205A (en) * | 2004-03-31 | 2005-10-20 | Sumitomo Electric Ind Ltd | Optical fiber cable and laying method therefor |
| JP2007017617A (en) * | 2005-07-06 | 2007-01-25 | Nippon Telegr & Teleph Corp <Ntt> | Spiral optical communication cord |
| JP2007020278A (en) * | 2005-07-06 | 2007-01-25 | Nippon Telegr & Teleph Corp <Ntt> | Device for fixing communication cord |
| JP2007133163A (en) * | 2005-11-10 | 2007-05-31 | Nippon Telegr & Teleph Corp <Ntt> | Cable fixing article and cable construction method |
| JP2007304439A (en) * | 2006-05-12 | 2007-11-22 | Ntt Advanced Technology Corp | Method for installing optical curling cord in piping |
| JP2007310115A (en) * | 2006-05-18 | 2007-11-29 | Fujikura Ltd | Optical cable |
-
2007
- 2007-03-06 JP JP2007055962A patent/JP2008216785A/en active Pending
-
2008
- 2008-03-05 TW TW097107688A patent/TW200900772A/en unknown
- 2008-03-06 WO PCT/JP2008/054012 patent/WO2008108421A1/en active Application Filing
- 2008-03-06 CN CNU2008200052025U patent/CN201247335Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819078A (en) * | 2012-08-14 | 2012-12-12 | 江苏通鼎光电股份有限公司 | Round self-supporting indoor and outdoor drop cable |
| CN105954845A (en) * | 2016-06-23 | 2016-09-21 | 南京华信藤仓光通信有限公司 | Dual self-holding optical fiber ribbon type wiring optical cable |
| CN106483617A (en) * | 2016-12-12 | 2017-03-08 | 海鹰企业集团有限责任公司 | Excess fiber length production method |
| CN106680956A (en) * | 2017-03-17 | 2017-05-17 | 海鹰企业集团有限责任公司 | Integrated optical fiber extra length generating method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008108421A1 (en) | 2008-09-12 |
| TW200900772A (en) | 2009-01-01 |
| JP2008216785A (en) | 2008-09-18 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20170306 |