JP2010181598A - Station direction indicator for optical cable core wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To indicate a station direction arrow and a station direction pole number for core wires having the same station direction in a closure, to facilitate selection of the core wire of a drop cable connection destination, and to prevent erroneous disconnection of the core wire, by putting a simple mark on optical fibers (core wires) without damaging it. <P>SOLUTION: A station direction indicator 1 for optical cable core wires, which is used in connecting a drop cable for subscribers, comprises: an indicator body 2 in which, for core wires 6 in an optical closure 51, an arrow 3 indicating a station direction, and characters and symbols 4 for core wire numbers, pole numbers, etc., are described on a flexible sheet; and a stopper 5 which is formed continuously to the indicator body 2 and detachably wound around the core wires 6, to show the station direction, the core wire number, and the like. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a local direction marking device for an optical cable core, which is marked so that it is easy to select a core cable to which the drop cable is connected when a drop cable is pulled from an optical cable to a subscriber's house.

The FTTH aerial optical closure 51 is used when the drop cable 55 is pulled from the optical cable 53 installed between the utility poles 52 to each subscriber (customer) house 54 as shown in the schematic explanatory diagram of FIG. . This FTTH (FIBER To The Home)
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Directly into the subscriber's home 54 as a transmission line
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This is a network configuration method. At the time of this connection work, on the ground of the subscriber's house 54, the closure pole number for pulling down the drop cable 55 and the pole number in the direction of the accommodation station are confirmed. At this time, it collates with the electric pole 52 instruct | indicated with the construction slip.

  Next, the worker climbed the electric pole 52, and on the pole, as shown in the schematic explanatory diagram of FIG. 9, the assigned core wire in the optical closure 51 was confirmed, taken out, and connected to the drop cable core wire 59. Then, this is stored in the optical closure 51. As shown in the figure, the optical closure 51 includes a case 56 in which a coupler and extra length storage tray 57 and a protective sheet 58 are stored. The drop cable 55 in which the drop cable core wire 59 is housed in the coupler and extra length storage tray 57 is pulled down and pulled into each subscriber house 54. When attaching the optical closure 51, a color tube for discriminating a core wire is wound in slot units. The connection point 60 is stored in the coupler and extra length storage tray 57.

  On the pole 52, the tape (4 cores) including the assigned core is taken out from the cable slot (4 core tape × 5) including the assigned core. At this time, the determination is made based on a quick reference table 61 as shown in FIG. Next, the tape (4 cores) including the assigned core wire is divided into 2 cores. Center-cut the two tapes including the assigned core after division. Also at this time, the determination is made based on the quick reference table 61 for identifying the core wire.

  Further, on the utility pole 52, a tube having the same color as the taken-out slot is attached. Of the cut two cores, the two cores on the accommodation station side are stored in the tray.

  Since there is no indication of the direction of the accommodation station or the direction of the accommodation station pole on the core wire / tape etc. in the optical closure 51, the direction of the accommodation station instructed in advance when performing the drop cable connection work for the subscriber home 54 It is necessary to confirm the direction of the accommodation station by confirming the number of the adjacent utility pole 52 based on the current pole number.

  On the ground of the subscriber's house 54, the number of the utility pole 52 in the direction of the accommodation station instructed for construction is confirmed, and after the direction of the accommodation station is recognized, the work on the utility pole 52 is started. The work on the pillar must be stopped and reconfirmed on the ground of the subscriber's house 54, which may reduce work efficiency. If they are mistaken, the core wire is erroneously cut and post-processing is required.

As a technique for identifying a plurality of optical fiber cores used in an optical fiber communication facility as described above, for example, as shown in Japanese Patent Application Laid-Open No. 2006-84520 “Identifier for Optical Fiber Core Wires” of Patent Document 1, an optical fiber is disclosed. A band-shaped covering material that can partially cover the peripheral surface of the core wire and can be colored extends in one direction while drawing a helix, and has an inner diameter D at the radial center of the helix and extends in the one direction. An optical fiber core housing part is formed, and a gap having a width W in which the optical fiber core wires can be inserted between the strip-shaped covering materials adjacent in the one direction is formed and attached to the peripheral surface of the optical fiber core wire. An identifier has been proposed that makes it possible to identify a plurality of optical fiber cores one by one.
JP 2006-84520 A

  However, when the same type of cables are congested and a plurality of light closures 51 are installed on the same power pole 52, there is a problem that the work efficiency of the check work is reduced. This was especially true when working on the pole of the utility pole 52.

  An optical fiber (core wire) is thin and easy to break, and has a property of being weak against bending, tension, vibration, and pressure. It was not possible to enter the direction of the containment station, the core number of the connection destination, etc. directly on the pen.

  The “identifier for optical fiber core wire” in Patent Document 1 is a technique that facilitates identification of each optical fiber core wire, but does not facilitate selection of a connection destination core wire. In addition, this identifier has a complicated structure, is easily bulky, and cannot be manufactured at a low cost.

  The present invention has been developed to solve such problems. That is, the object of the present invention is to attach a simple mark to the optical fiber without breaking the optical fiber, thereby indicating the local direction arrow and the local power pole number for the core wires having the same accommodation direction in the optical closure. Another object of the present invention is to provide a local direction marking device for an optical cable core wire that can easily select a core wire to which a drop cable is connected and prevent erroneous disconnection of the core wire.

  According to the present invention, when performing the drop cable connection work for the subscriber, the optical fiber cable core direction indication for indicating the accommodation station direction, the cable number, etc. on the fiber core (6) in the optical closure (51). A marking instrument body (2) which is an instrument (1) and has an arrow (3) indicating the direction of the accommodation station and a character / symbol (4) such as a core number / telephone pole number on a flexible sheet. And a hook part (5) continuously formed on the marking instrument body (2) and detachably wound around the core wire (6). A direction marking device is provided.

For example, the direction marking instrument (1) includes a substantially semicircular hooking part (5) formed on a neck (5a) continuous from one side of a substantially square marking instrument body (2). It is configured to be inserted into the latching long hole (7) opened in (2) and attached to the core wire (6).
The direction marking device (1) has a hooking portion (5) coated with an adhesive (9) on one end in the longitudinal direction of a substantially rectangular marking device main body (2), and the marking device main body (2). In a state of being wound around the wire (6), it can be configured to be attached to a core wire (6) by being affixed to a part of the indicating instrument body (2).

The directional marking instrument (1) has a first slit (10) on the front end side in the longitudinal direction of the substantially rectangular marking instrument body (2) and an opening on the opposite side of the first slit (10). In the state where the latching portions (5) each provided with the slit (11) are wound around the core wire (6), the first slit (10) and the second slit (11) are inserted into each other to insert the core wire ( 6) can be configured to be attached.
The direction marking device (1) is provided on a hooking portion (5) in which a round hole (13) is formed at the tip of a neck portion (12) continuous from one side of a substantially rectangular marking device body (2). The main body (2) can be configured to be thinly rolled in the longitudinal direction and inserted into the core (6).

  In the invention of the above configuration, the local direction arrow (3) and the characters / symbols (4) such as the local direction telephone pole number are the direction indicating instrument for the core wire (6) having the same direction toward the accommodating station when the drop cable is connected. Since it is marked by (1), the target core wire (6), that is, the core wire (6) to which the drop cable is connected is easily selected from among the many core wires (6) in the optical closure (51). Can be selected. Thereby, the erroneous cutting of the core wire (6) can be prevented. Since it is the structure which inserts the latching | locking part (5) of a marking instrument main body (2) in the latching long hole (7) of the same marking instrument main body (2), it can be easily attached to a core wire (6). .

  Since the direction marking device (1) is made of a flexible sheet material, the direction marking device (1) is easily broken and does not break the core wire (6) that is weak against bending, pressure, and the like. Furthermore, since the direction marking device (1) is made of a thin sheet material, it is not bulky and can be easily stored. In addition, the direction indicator (1) can be used any number of times to be detachable.

Moreover, in the direction marking instrument (1) of the latching part (5) to which the adhesive (9) is applied, the adhesive surface of the latching part (5) can be pasted on any place of the marking instrument body (2). The inner diameter around which the core wire (6) is wound can be adjusted according to the size of the bundle such as the core wire (6).
In the direction marking device (1) composed of the first slit (10) and the second slit (11), the slit (10, 11) is easily inserted into each other after being wound around the core wire (6). Therefore, it can be easily attached to the core wire (6). Since the direction marking device (1) has a structure in which two slits (10, 11) are provided in a single marking device body (2) having a simple shape, the manufacturing cost can be reduced.
In the direction marking instrument (1) of the latching part (5) in which the round hole (13) is formed, the marking instrument body (2) is thinly rolled in the longitudinal direction and inserted into the round hole (13). It is possible to prevent a drop due to an external force such as movement in a core / tape selection operation in the optical closure (51).

  The optical fiber cable core direction marking device of the present invention can be attached to the cable core in the optical closure when detaching a drop cable for a subscriber, and indicates the direction of the accommodation station, the cable number, etc. It is a marking device to do.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a local direction marking device for an optical cable core according to a first embodiment. FIG. 2 is a perspective view showing a state in which the direction marking device of Example 1 is attached to a bundle of optical cores. FIG. 3 is a perspective view showing a state in which the direction marking device of Embodiment 1 is attached to the optical cable in the drop closure.
The optical fiber cable core direction indicator device 1 according to the first embodiment is an indicator device in which an arrow 3 indicating the accommodation station direction and a character / symbol 4 such as a core number are written on a substantially square indicator device body 2. A neck portion 5a continuous from one side of the marking instrument body 2 was formed, and a substantially semicircular hooking portion 5 for retaining the neck portion 5a was formed. The hooking portion 5 is inserted into the hooking long hole 7 opened in the marking instrument body 2 in a state of being wound around the core wire 6 or the like, and the attachment to the optical core wire 6 is completed.

  Since this latching part 5 can be extracted from the latching long hole 7, the direction marking instrument 1 can be easily removed from the optical fiber core 6. The latching long hole 7 is further provided with a notch 8 so that the latching part 5 can be easily inserted and cannot be removed. Therefore, this direction marking device 1 can be used any number of times.

  The marking instrument body 2 and the latching portion 5 of the present invention are preferably made of a flexible material so that it can be easily wound around the core wire 6. For example, the marking instrument body 2 and the latching portion 5 are made of a single sheet material having flexibility. The core wire 6 (optical fiber) is thin and easy to break, and has the disadvantages that it is weak against bending, tension, vibration and pressure. Therefore, a soft material, that is, a material having flexibility is preferable so that the core wire 6 (optical fiber) is not broken when the sign device is attached or when the sign device is attached. At the same time, if it is flexible, it can be easily wound around the core wire 6 (optical fiber).

  The marking instrument body 2 can be colored as necessary, and can be matched to the color of the core wire 6. Further, by applying a phosphorescent paint to the marking instrument body 2, the arrow 3, characters / symbols 4 can be clearly distinguished even during night work.

  Therefore, the local direction marking instrument 1 of the present invention uses a sheet made of, for example, soft vinyl chloride. As described above, this not only does not break the core wire 6 (optical fiber), but also has a feature that it can be easily stored without being heavy because it is in the form of a sheet. Moreover, since it is a detachable structure, it can be used any number of times. In addition, the raw material of the direction marking instrument 1 is not limited to this vinyl chloride, and other synthetic resins having flexibility can be used. Furthermore, it is also possible to use paper that has been subjected to waterproofing treatment.

  This station direction marking device 1 is used for the drop cable connection work by marking the station direction arrow 3 and the character / symbol 4 of the station direction telephone pole number on the core wire 6 having the same accommodation station direction in the optical closure 51. In addition, as shown in FIG. 2, the target core wire 6, that is, the core wire 6 to which the drop cable is connected can be easily selected from among the many core wires 6.

  As shown in FIG. 3, the local direction marking device 1 of the present invention can of course be attached to an optical cable in the case 56 of the optical closure 51. In the illustrated example, for easy understanding, a state in which the local direction marking device 1 is attached to one optical cable is shown.

4A and 4B show a modification of the optical fiber cable core direction indicator according to the first embodiment, where FIG. 4A is a front view and FIG. 4B is a state wound around the cable.
The local direction marking instrument 1 in the illustrated example has a shape in which the marking instrument main body 2 portion and the latching portion 5 are formed in a substantially square shape in a state where this is wrapped around the core wire 6. The shape of the local direction marking instrument 1 is not limited to a shape that is substantially square when attached in this way. The station direction marking device 1 can be detachably wound around the core wire 6, and it is sufficient that the station direction arrow 3 and the character / symbol 4 of the station direction utility pole number are written there. Therefore, as shown in FIG. 4, the whole may have a strip shape, and the latching portion 5 may be a semicircular stopper formed at the tip of the elongated neck portion 5a. If it is such a shape, the area which contacts the local direction marking instrument 1, the core wire 6, and an optical cable will become small, and there exists the characteristic that the burden to the core wire 6 and an optical cable is reduced.

FIG. 5: shows the local direction marking instrument for optical cable core wires of Example 2, (a) is a front view, (b) is the state wound around the core wire.
The local direction marking device 1 of the second embodiment is also a substantially rectangular marking device body (2) that has a strip shape as a whole. This marking device main body 2 has a local arrow 3 and a local power pole number character / symbol 4 written thereon. The latching part 5 having the adhesive 9 applied to a part in the longitudinal direction of the marking instrument body 2 is attached to a part of the marking instrument body 2 with the marking instrument body 2 wound around the core wire 6. Configured.

  In the local direction marking device 1 of the second embodiment, the hanging portion 5 to which the adhesive 9 is applied can be freely pasted on any location of the marking device body 2, so that the bundle of the core wire 6 or the like is large or small (large or small outside diameter). The size of the core wire 6 can be varied according to the above. Moreover, in the local direction marking instrument 1 of this Example 2, it can be used any number of times until the adhesive strength of the adhesive 9 is extremely reduced.

FIG. 6: shows the local direction marking instrument for optical cable core wires of Example 3, (a) is a front view, (b) is the state wound around a core wire, (c) is the wound state.
The local direction marking instrument 1 of Example 3 has a first slit 10 on the distal end side in the longitudinal direction of the substantially rectangular marking instrument body 2 and a second slit 11 having an opening opposite to the first slit 10. The first slit 10 and the second slit 11 are inserted into each other in a state where the provided latching portion 5 is wound around the core wire 6.

  In the local direction marking instrument 1 of Example 3, after winding this around the core wire 6, it can be easily attached by simply inserting the first slit 10 and the second slit 11 to each other. Since this local direction marking instrument 1 has a simple shape in which two slits 10 and 11 are provided in one marking instrument body 2, it can be manufactured at low cost and can be easily stored.

FIG. 7: shows the local direction marking instrument for optical cable core wires of Example 4, (a) is a front view, (b) is the state wound around the core wire.
In the local direction marking device 1 of the fourth embodiment, the marking device main body 2 is thinned in the longitudinal direction at the latching portion 5 in which the round hole 13 is formed at the tip of the neck portion 12 continuous from one side of the substantially rectangular marking device main body 2. It was configured to be rolled and inserted and attached to the core wire 6.

  In the local direction marking instrument 1 according to the fourth embodiment, the marking instrument body 2 is thinly rounded and inserted into the round hole 13 in the longitudinal direction. The local direction marking instrument 1 has a feature that an area in contact with the core wire 6 and the optical cable is reduced, and a burden on the core wire 6 and the optical cable is reduced.

  In the present invention, the central arrow 6 and the character / symbol 4 such as the local power pole number are indicated for the core 6 having the same accommodation direction in the optical closure 51 without breaking the core 6. As long as the core wire 6 to which the drop cable is connected can be easily selected and the erroneous cutting of the core wire 6 can be prevented, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. Of course.

  The station direction marking device for an optical cable core of the present invention is not only used when selecting a core cable to which a drop cable is connected in the construction of dropping a drop cable from an optical cable to a subscriber's house, but also has a plurality of cables, harnesses, It can also be used for the operation of selecting a specific wire from other wires.

It is a front view which shows the local direction marking instrument for optical cable core wires of Example 1. FIG. It is a perspective view which shows the state which attached the direction marking instrument of Example 1 to the bundle | flux of an optical core wire. It is a perspective view which shows the state which attached the direction marking instrument of Example 1 to the optical cable in a drop closure. The modification of the local direction marking instrument for optical cable cores of Example 1 is shown, (a) is a front view, (b) is the state wound around the core. The optical fiber cable core direction indication instrument of Example 2 is shown, (a) is a front view, (b) is the state wound around the cable. The optical fiber cable core direction indicator of Example 3 is shown, (a) is a front view, (b) is a state wound around the core wire, and (c) is a wound state. The optical fiber cable core direction indication instrument of Example 4 is shown, (a) is a front view, (b) is the state wound around the cable. It is a schematic explanatory drawing which shows the state which draws 1233808206171_2 into a subscriber's house from a drop closure as a transmission line. It is a schematic explanatory drawing which shows the state in a drop closure. It is a surface view which shows an example of a core wire identification quick reference table.

DESCRIPTION OF SYMBOLS 1 Station direction marking device for optical cable core wires 2 Marking device main body 3 Arrow which shows accommodation station direction 4 Characters and symbols, such as a core number and a telephone pole number 5 Latching part 6 Core wire 7 Latching long hole 9 Adhesive 10 1st Slit 11 Second slit 12 Neck 13 Round hole 51 Light closure

Claims (5)

When performing drop cable connection work for subscribers, the optical fiber cable core direction indicator (1) is used to indicate the direction of the accommodation station, the core number, etc. on the optical fiber (6) in the optical closure (51). And
On the flexible sheet, an arrow (3) indicating the direction of the accommodation station, and a marking instrument body (2) in which characters / symbols (4) such as a core number / electric pole number are written,
An optical cable core direction indicator for an optical cable, comprising: a hook portion (5) continuously formed on the core wire (6) and detachably wound around the core wire (6). Instruments.   The direction marking device (1) includes a substantially semicircular hooking portion (5) formed on a neck (5a) continuous from one side of a substantially rectangular marking device main body (2). The local direction marking device for an optical cable core wire according to claim 1, wherein the device is attached to the core wire (6) by being inserted into a latching long hole (7) opened in a).   The direction marking device (1) has a hooking portion (5) coated with an adhesive (9) on one end in the longitudinal direction of a substantially rectangular marking device main body (2), and the marking device main body (2). The optical cable core station according to claim 1, wherein the optical cable core wire is configured to be attached to a core wire (6) by being attached to a part of the marking instrument body (2) while being wound around the wire (6). Direction marking device.   The directional marking instrument (1) has a first slit (10) on the front end side in the longitudinal direction of the substantially rectangular marking instrument body (2) and an opening on the opposite side of the first slit (10). In the state where the latching portions (5) each provided with the slit (11) are wound around the core wire (6), the first slit (10) and the second slit (11) are inserted into each other to insert the core wire ( It is comprised so that it may attach to 6), The local direction marking instrument for optical cable core wires of Claim 1 characterized by the above-mentioned.   The direction marking device (1) is provided on a hooking portion (5) in which a round hole (13) is formed at the tip of a neck portion (12) continuous from one side of a substantially rectangular marking device body (2). The local direction marking device for an optical cable core wire according to claim 1, wherein the main body (2) is configured to be thinly rolled in the longitudinal direction and inserted into the core wire (6).

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