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WO2010010642A1 - Procédé de passage de câble et protecteur utilisé dans celui-ci - Google Patents

Procédé de passage de câble et protecteur utilisé dans celui-ci Download PDF

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Publication number
WO2010010642A1
WO2010010642A1 PCT/JP2009/000609 JP2009000609W WO2010010642A1 WO 2010010642 A1 WO2010010642 A1 WO 2010010642A1 JP 2009000609 W JP2009000609 W JP 2009000609W WO 2010010642 A1 WO2010010642 A1 WO 2010010642A1
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WO
WIPO (PCT)
Prior art keywords
cable
main
protective device
building
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/000609
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English (en)
Japanese (ja)
Inventor
大塚洋一
池畑浩一
高橋信
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mirait One Corp
Original Assignee
Todentsu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Todentsu Corp filed Critical Todentsu Corp
Publication of WO2010010642A1 publication Critical patent/WO2010010642A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • G02B6/44785—Cable clamps
    • 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
    • G02B6/4477—Terminating devices ; Cable clamps with means for strain-relieving to interior strengths element

Definitions

  • the present invention generally relates to a cable drawing method, and in particular, a method for drawing a communication cable such as an optical fiber cable or a signal transmission cable from an optical fiber trunk cable system constituting an optical wiring network into a building such as a house and the like.
  • the present invention relates to a facility, and a member for protecting an indoor system used in these cases when the cable is abnormally pulled.
  • Patent Document 1 This type of cable drawing method is disclosed in Patent Document 1. According to this, an optical rosette that uses a splice such as an adhesive method or a mechanical method installed in a home, and is connected to a closure that is connected to the optical rosette at one end and the other end is installed outdoors.
  • a splice such as an adhesive method or a mechanical method installed in a home
  • An optical fiber cable main body comprising a sheath covering the outer peripheral portion of the optical fiber cord, and one side surface of the sheath excluding a portion located in the house of the optical fiber cable main body is integrally formed on the outer peripheral portion via a connecting portion.
  • an optical fiber cable comprising a metal support wire and a support wire sheath covering the metal support wire It is. Thereby, it becomes possible to connect between the optical rosette in a house and the closure branched from the outdoor optical fiber trunk cable with one optical fiber cable.
  • an optical fiber cable (hereinafter, abbreviated as an optical cable as appropriate) from the building to the main cable side.
  • an optical fiber cable hereinafter, abbreviated as an optical cable as appropriate
  • the outer wall part of the building that fixes the optical cable can be damaged, or indoor wiring connected to the optical cable or connected equipment can be pulled to cause disconnection or failure.
  • a cable location that can be cut preferentially or easily over other locations by such an abnormal tensile action is provided in the previous stage of drawing the optical cable indoors.
  • the support line is partially removed to form only the optical fiber cable main body, or only the support line
  • the present invention has been made in view of the above-described problems, and the object of the present invention is to take measures against an abnormal tensile action of a cable with a simple operation without using an expensive tool.
  • a specific aspect of the present invention is an optical fiber transmission main line for optical signal transmission having an optical fiber cord and a tensile body wire attached to both sides or one side of the optical fiber cord and the main line.
  • a branch cable having a support line is branched from the trunk cable system and drawn into the building, and the branch cable is first fixed from the trunk cable system to the outer wall of the building or other building outer shape.
  • the protective device is more than the other cable locations. It is configured such that a cable portion that hits the edge of the cable can be preferentially cut at the edge.
  • another specific aspect of the present invention includes an optical fiber main line for optical signal transmission having an optical fiber cord and a tensile body wire attached to both sides or one side thereof, and the main line.
  • a protective device for use in a method of branching a branch cable having a supporting line for supporting the installation from the trunk cable system and drawing it into the building, and a through hole for loosely inserting at least two of the main lines
  • a main fixing portion is formed by first fixing the branch cable to the outer wall of the building or other building outer shape from the trunk cable system, and between the main fixing portion and the cable inlet of the building.
  • the supporting wire is removed from at least a part of the branch cable to be delivered, and the cable portion where only the main wire remains is wound into a ring shape by the removal, thereby forming a winding part.
  • the branch cable is pulled from the building toward the trunk cable system, and the size of the winding portion is reduced. It is configured such that a cable portion that hits the edge of the protective device can be preferentially cut at the edge over other cable portions.
  • FIG. 6 is a perspective view showing a protective device according to another embodiment of the present invention. It is a perspective view which shows the one aspect
  • One embodiment of the present invention is a branch line having an optical fiber main line for optical signal transmission having an optical fiber cord and a tensile body wire attached to both sides or one side thereof, and a support line attached to the main line and responsible for erection.
  • a method of branching a cable from a trunk cable system and drawing the cable into a building the step of forming a main fixing portion for first fixing the branch cable from the trunk cable system on an outer wall of the building or other building outer shape; and , Removing the support wire from at least a part of the branch cable delivered between the main fixing portion and the cable entrance of the building, and winding the cable portion where only the main wire remains by the removal into a ring shape Forming a winding part, and attaching a protective device so that at least a part of the winding part is inserted into the winding part.
  • the protective device has a cable location that hits the edge of the protective device rather than other cable locations when the branch cable is pulled from the building in the direction of the trunk cable system and the size of the winding portion is reduced.
  • the method is characterized in that it can be preferentially cut at the edge (claim 1).
  • the cable part that hits the edge of the protective device is prioritized over the other cable parts with respect to the abnormal pulling of the branch cable in the winding part formed by winding the cable part with only the main line remaining in a ring shape.
  • a protective device that can be cut at the edge is attached. The attachment is performed in a simple form in which the wound cable portion is inserted through the protective device. Therefore, it is not necessary to separate the conventional optical fiber cable body into an optical fiber cord and other parts (such as a tensile body), and an expensive tool is not used.
  • no special tools are required for cable winding work and protection equipment installation, and only manual work is required. Therefore, the entire installation work can be simplified, and measures against abnormal tensile action of the cable can be realized reliably. it can.
  • a sub fixing part for fixing the branch cable to the outer shape of the building is provided on the cable inlet side, and the main fixing part and the sub fixing are provided.
  • the position of the winding portion, and thus the position of the cable to be cut when an abnormal pulling of the cable occurs, is defined, and a more stable safety measure is achieved.
  • the support wire may have a core wire formed of a plastic material having higher rigidity than the main wire (Claim 3).
  • the main fixing portion may be configured based on an S metal fitting and / or the sub-fixing portion may be configured based on a wiring cleat. ). This is advantageous because the present invention can be realized with simple and inexpensive members that have been conventionally used.
  • Another embodiment according to the present invention includes an optical fiber main line for optical signal transmission having an optical fiber cord and a tensile body wire attached to both sides or one side of the optical fiber cord, and a support line attached to the main line and responsible for installation.
  • a main fixing portion that is first fixed from the trunk cable system is formed on an outer wall of the building or other building outer shape, and at least a part of the branch cable that is handed over between the main fixing portion and the cable inlet of the building In a situation in which the supporting wire is removed and the cable portion where only the main wire remains by the removal is wound in a ring shape to form a winding portion, the winding is formed in the through hole.
  • the edge of the protective device is more than other cable points. It is comprised so that the cable location which hits can be cut
  • this protective device by attaching the winding portion formed by winding the cable portion with only the main wire remaining in a ring shape into the through hole, the protective device can be attached to the winding portion and the winding Can be held. Therefore, a very simple mounting operation is sufficient. Moreover, this protective device can cut
  • the main body is formed with a slit that can be inserted into the cylindrical hollow portion by inserting a cable crossing portion of the cable portion from the side surface.
  • the protector which is very easy to manufacture can be provided.
  • the slit may be formed to be curved and extend on the side surface of the main body (Claim 7).
  • the main body has a substantially flat main body instead of a cylindrical main body structure, and the main body has a through-hole extending in the thickness direction of the main body for loosely inserting the cable portion, and the flat plate shape.
  • a slit that can communicate with the through hole from a side portion of the main body and can be inserted into the through hole by inserting the cable crossing portion of the cable portion from the side surface may be formed (Claim 8). .
  • the fixing device can be fixed using this additional part (claim 10).
  • the protective device can be easily fixed to the outer wall of the building, for example.
  • Example 1 1 and 2 show a cable installation configuration configured by a cable drawing method according to an embodiment of the present invention.
  • the branch cable 10 branched from the trunk cable system (not shown) is delivered toward the outer wall 20 of the building via a predetermined branching facility such as a utility pole 35 and a closure 36 installed therein.
  • the branch cable 10 is an optical cable also called an IF drop in this example, and its structure is roughly divided into two.
  • the main line 11 for optical communication and the main line 11 associated with the main line 11 It is composed of a support wire 12 for facilitating an overhead wire and stabilizing or reinforcing the cable installation state.
  • the main line 11 is indicated by a white line and the support line 12 is indicated by a black line.
  • FIG. 3 shows a more detailed configuration of the optical cable 10 in which the main line 11 and the support line 12 attached to the main line are coupled by a connecting part (neck part) 100 with their side parts facing each other.
  • the main line 11 includes an optical fiber cord 110 disposed in the center, tensile strength body wires 111 arranged on both sides of the cord at a predetermined interval, and a sheath portion that covers the entire optical fiber cord 110 and the tensile strength body wire 111. 112.
  • the tensile body wire 111 is also called a tension member, and is a thin line made of a synthetic resin material that can reinforce against tension such as G-FRP and K-FRP.
  • the sheath portion 112 is formed of a thermoplastic resin, and a pair of opposed V grooves 11v formed along the optical fiber cord 110 is formed between one and the other of the tensile body wires 111 on the outer surface thereof. (Upper and lower in FIG. 3). Using the V groove 11v, the optical fiber cord 110 is stripped from the sheath portion 112.
  • the optical fiber cord 110 includes an optical fiber core wire 11a, a high-strength fiber 11b that covers the core wire, and a flame-retardant sheath 11c formed of polyethylene or the like that covers the fiber 11b.
  • the support wire 12 includes a support core wire 120 and a sheath portion 121 that covers the core wire, and is coupled to the main wire 11 via the connecting portion 100 in a form facing one strength body wire 111.
  • the sheath portion 121 is preferably formed of the same material as the sheath portion 112 of the main line 11, and more preferably formed integrally with the sheath portion 112 and the connecting portion 100.
  • the core wire 120 of the support wire 12 is preferably formed of a plastic material having higher rigidity than the main wire 11, for example, a steel material.
  • the main line 11 and the support line 12 are separated by cutting the connecting portion 100 having a relatively small strength in the longitudinal direction.
  • the separation and separation of the main line 11 and the support line 12 as well as the separation of the optical fiber cord 110 or the optical fiber core wire 11a from the main line 11 and the other portions are the methods and forms described in Patent Document 1 and JP 2004-205609A.
  • the connecting portion 100 is depicted as a substantially flat extending portion having a thickness of about one-fifth of the sheath portions 112 and 121.
  • the connecting portion 100 may be appropriately sized and shaped as appropriate.
  • the branch cable 10 from the trunk cable facility is firstly attached to the outer wall 20 as the outer portion of the building into which the cable is to be drawn from the trunk cable system by the main fixing portion 30 formed on the outer wall.
  • the main fixing portion 30 includes an S metal fitting 31, a hooking loop 32, and a C metal fitting 33.
  • the S bracket 31 winds the support wire 12 and adjusts the length of the support wire 12 so that the support wire 12 is fixed by the frictional force of the wound portion with respect to the normal tension of the support wire 12.
  • Possible retractable metal fittings Possible retractable metal fittings.
  • the hooking loop 32 attached to the S metal fitting 31 is hooked from above by a substantially C-shaped hook portion 34 provided on the C metal fitting 33 and is held by the C metal fitting 33.
  • the C metal fitting 33 is fixed to the outer wall 20.
  • the main fixing portion 30 fixes the support wire 12 having a normal tension to the outer wall 20 and also fixes the branch cable 10 as described above.
  • the S metal fitting 31 and the C metal fitting 33 are simple and inexpensive attachment members used conventionally.
  • a sub-fixing part 41 is provided on the cable inlet 21 side.
  • the sub-fixing portion 41 is configured by a so-called wiring cleat as a fixing tool that can be held and fixed to the outer wall 20 by a holding structure that holds the branch cable 10.
  • This wiring cleat is a simple and inexpensive member conventionally used.
  • the branch cable 10 is wound around a protective tape 12 a at a site where it branches into a main line 11 and a support line 12.
  • the protective tape 12a is used to stop the separation of the main line 11 and the support line 12 at the branch portion.
  • the cable drawing work requires a step of removing a part of the support wire 12 from the branch cable portion delivered between the main fixing portion 30 and the cable drawing port 21.
  • the remaining cable portion 10p of only the main line 11 obtained by such removal forms a cable winding portion 11r in a ring shape as shown in FIG. 2 (in this example, it is wound once).
  • the winding device 11r is attached with a protector 50 that bears the main features of the present invention for holding the winding by inserting the wound cable portion 10p.
  • Protective device 50 is a member for protecting the indoor system when the cable is abnormally pulled, and has an edge having a cable cutting function.
  • the protective device 50 is configured such that when the branch cable 10 is pulled from the building in the direction of the trunk cable system, the cable portion that hits the edge of the protective device 50 can be cut preferentially at the edge over the other cable portions. Has been.
  • a protective device 50 is attached which can cut the location at its edge preferentially over other cable locations. The attachment is performed in a simple form in which the wound cable portion 11r is inserted through the protective device 50. Therefore, it is not necessary to separate the conventional optical fiber cable main body (main line 11) into the optical fiber cord 110 (see FIG. 3) and other portions, and an expensive tool is not used. Moreover, no special tools are required for the cable winding operation and the installation of the protective device 50, and only a manual operation is required. Therefore, the entire installation operation is simplified, and a countermeasure for the abnormal tensile action of the cable is surely realized. Can do.
  • the auxiliary fixing portion 41 is not necessarily provided, but by providing the auxiliary fixing portion 41, the position of the winding portion 11r, and thus the position of the cable 10 to be cut when an abnormal pull occurs in the cable 10, It has an additional effect that more stable safety measures can be taken.
  • FIG. 4 and 5 are so-called sleeve types of the protective device 50, and show different examples of specific forms. Although both have a cylindrical body, FIG. 4 shows a protective device 51 having a slit 5s extending in a relatively simple curve. On the other hand, FIG. 5 shows a protective device 52 having a slit 5s' extending in a relatively complicated curve.
  • the protective device 51 is made of, for example, a moldable metal material such as aluminum or stainless steel, or a hard plastic. In the longitudinal direction, there are through holes, that is, hollow portions 500 for loosely inserting at least two main wires 11 of the cable 10. As described above, the protective device 51 holds the winding by inserting the cable portion wound around the through hole 500 in the winding portion 11r between the main fixing portion 30 and the cable lead-in port 21. It is attached to the winding part 11r.
  • the protective device 51 formed with a length of the protective device 51 of about 30 mm, a diameter of the hollow portion of 7 to 9 mm, and a slit width of 1.8 mm at the maximum is used to hold the winding portion and to be described later.
  • the diameter of the ring of the winding part 11r of the cable loosely inserted was set to a minimum of 100 mm.
  • the protection device 51 tightly wraps the main wire 11 around the protection device 51 and further strikes the edge 5e of the protection device 51 as the pulling progresses.
  • the cable portion is configured to be preferentially cut at the edge 5e over other cable portions.
  • the length of the protective device 51 is a suitable size for such a cable.
  • the protective device 51 has a cylindrical main body, and has a slit 5s that can be inserted into the cylindrical hollow portion 500 by inserting the cable crossing portion 11c of the wound cable portion 11r from the side surface of the cylindrical body. Since it is formed on this main body, it can be attached very easily and is very easy to manufacture. In addition, since the slit 5s is formed to bend and extend on the side surface of the main body, once the main wire 11 is inserted into the hollow portion 500 of the protective device 51 and attached, the main wire 11 is slit from the hollow portion. There is an advantage that it is difficult to come off through 5s.
  • the slit 5 s ′ has the same configuration and operational effects as those shown in FIG. 4 except that the curved shape of the slit 5s ′ is complicated.
  • the slit 5 s ′ is curved in an S shape as shown in FIG. 5, and leads to an additional effect that the inserted cable is less likely to come off than the slit 5 s extending in an arc shape in FIG. 4.
  • the slit formed in the protective device may extend linearly, and even if the outer periphery of the protective device is wrapped with tape after the cable is inserted, at least a part of the slit can be prevented from falling off.
  • the end portions of the protective device main body forming the slit wall surface are overlapped, and the slit gap in the direction perpendicular to the main body side surface is overlapped. May be eliminated. According to this, the protectors 51 and 52 change the center of gravity so that the overlapped portion faces down.
  • the cable crossing portion 11c always takes the form of contacting the protective device portion facing the slit portion, that is, located at a position away from the slit portion that can form the cable dropout path, and dropped. It will contribute to prevention.
  • Example 1 ' 7 and 8 show a protective device 151 that is a modification of the protective devices 51 and 52.
  • Pipes 153a and 153b divided in the longitudinal direction are accommodated in a protective case 152 formed of two members 152a and 152b that are engaged with each other so as to be freely opened and closed.
  • the protective case 152 is made of plastic. In the case where the protective case 152 is made of hard plastic or the like, the shapes of the pipes 153a and 153b may be directly formed thereon.
  • the protective device 151 has a mounting hole 154 and can be fixed to the outer wall 20 of the building by inserting a wood screw or the like, for example. By this fixing, the cable cutting position at the time of abnormality can be determined. For this, see also the description in the second embodiment.
  • FIG. 9 shows a protective device 53 according to another embodiment of the present invention.
  • the protective device 53 has a substantially flat main body 530.
  • the main body 530 communicates with the through-hole 531 from the side hole 532 of the flat body 530 and the through-hole 531 extending in the thickness direction of the main body 530 for loosely inserting the wound cable portion.
  • a slit 53 s that can be inserted into the through-hole 531 by inserting the cable crossing portion 11 c of the cable portion from the side surface is formed.
  • Such a relatively simple protective device is easy to manufacture. Further, since the main body is flat, storage and handling are facilitated.
  • the slit 53s has an arcuate cross section as shown in FIG.
  • the main line 11 loosely inserted into the protective device 53 is unlikely to come off the protective device 53. Instead of this, it is possible to tap so as to block at least a part of the slit 53s.
  • the protective device 53 further includes an incidental portion 533 that extends or is connected to the flat plate-like body 530 at a right angle.
  • an incidental portion 533 that extends or is connected to the flat plate-like body 530 at a right angle.
  • a wood screw or the like can be inserted into the attachment hole 533a of the auxiliary portion 533 so that the protective device 53 can be fixed.
  • this fixing has an advantage that the cable cutting position at the time of abnormality can be determined.
  • the angle formed by the flat plate-like main body 530 and the incidental portion 533 is a right angle, but may be an appropriate angle other than this as appropriate.
  • the pulling direction of the cable 10 is not limited.
  • the protective device 53 when the protective device 53 is fixed, there is an abnormality. If the wound main wire 11 is fixed in a direction corresponding to the pulling direction of the cable 10 so as to contact a predetermined edge portion of the through hole 531, the main wire 11 is easily cut.
  • the mode in which the cable is routed substantially horizontally from the main fixing portion 30 to the service port 21 has been described.
  • the present invention is not limited to this, and the cable routing may be vertical.
  • the present invention can be applied in any form such as slanting or forming a corner.
  • These steps may be performed in the order as described above, but the order is not necessarily limited, and may be appropriately replaced in time series or performed in parallel. The top-level concept is also intended for such replacement and parallel processing.
  • the cable winding number of the winding part 11r is set to 1, you may make it 2 or more, and the detail of a cable is not necessarily limited to what was demonstrated with reference to FIG. Of course.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

L'invention concerne une contre-mesure prise contre l'action de traction anormale d'un câble par simple travail sans utiliser d'outil coûteux. L'invention concerne un procédé consistant à brancher un câble de branchement (10), ayant une ligne principale à fibre optique (11) destinée à transmettre des signaux optiques et un fil porteur (12) qui lui est fixé, à partir d'un système de câbles de ligne de jonction et à amener le câble de branchement dans un bâtiment. Une partie de fixation principale (30) destinée à fixer le câble de branchement (10) sur la paroi externe (20) à une première position à partir du système de câbles de ligne de jonction est formée, une partie du fil porteur (12) est retirée d'une partie du câble (10) s'étendant entre la partie de fixation principale (30) et l'entrée du service de câble (21) du bâtiment, la partie (10p) du câble où seule la ligne principale à fibre optique (11) reste en raison du retrait est enroulée sous forme d'un anneau de manière à former une partie enroulée (11r) et un protecteur (50) destiné à passer sur la partie enroulée du câble et à maintenir la partie enroulée est fixé sur la partie enroulée (11r). Le protecteur (50) est agencé de telle manière que la partie du câble, venant en butée contre le bord du protecteur (50), puisse être coupée par le bord de préférence aux autres parties du câble lorsque le câble (10) est tiré depuis le bâtiment dans la direction du système de câbles de ligne de jonction.
PCT/JP2009/000609 2008-07-25 2009-02-16 Procédé de passage de câble et protecteur utilisé dans celui-ci Ceased WO2010010642A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008191696A JP4293381B1 (ja) 2008-07-25 2008-07-25 ケーブル引込方法
JP2008-191696 2008-07-25

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WO2010010642A1 true WO2010010642A1 (fr) 2010-01-28

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2012627B1 (en) * 2014-04-15 2016-04-11 Draka Comteq Bv Protection element for protecting a fiber network component against damage thereof, tapping box, method of installing a network, and communications network.
CN107086506A (zh) * 2017-05-22 2017-08-22 南通中远船务工程有限公司 主干电缆走向设计方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000188164A (ja) * 1998-12-21 2000-07-04 Alps Electric Co Ltd 回転コネクタ
JP2000306167A (ja) * 1999-04-16 2000-11-02 Furukawa Electric Co Ltd:The 侵入検知線
JP2004219611A (ja) * 2003-01-14 2004-08-05 Toyokuni Electric Cable Co Ltd 光ファイバーの宅内への配線

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000188164A (ja) * 1998-12-21 2000-07-04 Alps Electric Co Ltd 回転コネクタ
JP2000306167A (ja) * 1999-04-16 2000-11-02 Furukawa Electric Co Ltd:The 侵入検知線
JP2004219611A (ja) * 2003-01-14 2004-08-05 Toyokuni Electric Cable Co Ltd 光ファイバーの宅内への配線

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JP2010032579A (ja) 2010-02-12

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