JPH0583838A - Communication line housing box and communication line laying/recovering method - Google Patents

Abstract

(57) [Abstract] [Purpose] A communication line such as an optical fiber cable can be smoothly drawn in and out of the communication line storage box with a constant tension in both cases of drawing and sending. To [Structure] When the handle 9 is rotated, the rotary plate 7 is rotated. The communication line 5 is taken in through the insertion hole 10 of the rotary plate, is drawn in by the draw-in roller that rotates in synchronization with the rotation of the rotary plate, and is stored around the winding cylinder. By twisting the communication wire due to the rotation of the rotating plate and storing the twisted wire on the winding cylinder every one rotation, it is possible to prevent the communication wire from being rotated outside the winding cylinder. In the case of sending out, on the contrary, the roller is rotated by drawing out the communication line, and the rotating plate is rotated in conjunction therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication wire storage box used for laying a communication wire such as a copper wire or an optical fiber wire, and a communication wire laying and collecting method.

[0002]

2. Description of the Related Art When laying a communication wire such as a conducting wire or an optical fiber wire, a communication wire of a predetermined length is stored in a storage box and is laid on the site while being pulled out from the storage box. ing.

The container for accommodating the optical fiber line described in European Patent Application Publication No. 0296860 discloses that when the container is housed in the container, the communication line is dropped by gravity, retracted, and installed. This is to draw out the stored communication line.

18 to 20 are explanatory views of the communication line storage section in the above specification, FIG. 18 is an explanatory view of a state in which the communication line is drawn into the communication line storage section, and FIG. FIG. 20 is an explanatory diagram of a housed state, and FIG. 20 is an explanatory diagram of a state of pulling out the communication line from the housing section. In the figure, 91 is a communication line, 92 is a communication line housing, 93 is a central hole, 94 is an upper guide, 95 is a lower guide, 96 is a drawing roller, 9
7 is a roller driving force transmission unit, 98 is a pull-in angle adjusting device, 99 is a gear, 100 is a drive motor, 101 is a motor case, 102 is a cable intake device, and 103 is a guide cap.

As shown in FIG. 20, the communication line storage portion 92 has a cylindrical appearance, and has a cylindrical central hole 93 at the center. The central hole 93 penetrates the bottom portion of the communication line storage portion 92, and therefore the portion for storing the communication line 91 has an annular shape.

FIG. 18 shows a state in which the cable intake device 102 is set in the communication line storage portion 92, the lower guide 95 is set thereon, and the upper guide 94 is further set thereon. The motor case 101 provided at the lower center of the cable intake device 102 is adapted to be inserted into the central hole 93 of the communication wire housing 92. Drive motor 100 mounted on motor case 101
Drives the pull-in roller 96 to rotate by the gear 99 via the roller driving force transmitting portion 97, and the upper guide 9
The communication line 91 introduced from No. 4 is drawn along the locus 104. At the same time, the gear 99 applies a rotational force to the pull-in angle adjusting device 98 to change the angle of the pull-in roller 96, and the locus 104 of the communication line 91 is pulled in while gradually shifting its position.

FIG. 19 shows the communication line 9 in the communication line housing 92.
1 shows a part of the state in which 1 is accommodated, and the communication line 91 is accommodated while changing its position, although it is irregular. The communication line storage unit 92 that has been pulled in is removed from the cable intake device 102.

At the time of laying the communication line, as shown in FIG. 20, the guide cap 103 is put on the communication line housing portion 92, and the communication line 91 is pulled out from the upper hole.

Note that FIG. 20 shows the state in which the guide cap 103 is obliquely removed for the sake of explanation.

On the other hand, as the use of optical communication technology has expanded in recent years, there has been an increasing demand for easy installation of optical fiber cables, and optical fibers with connectors attached to both ends have been used instead of the conventional fusion splicing. Shipping fiber,
A method of simply connecting both ends at the site and then processing the excess length is spreading. At this time, it is unsuitable to process the excess length because it is extremely low in manufacturability to manufacture a cable with a length that exactly matches the length of the installation location at the time of shipment, as it is extremely low in manufacturability. Processing is becoming essential. As a surplus length storage technique that can be used in such a case, it is possible to use the communication line storage unit as described in FIG.

However, in the above-mentioned prior art,
Use of a drive motor and a structure that can be inserted in the center make the device large, the movement of the drawing roller is complicated and the number of parts is large, it is expensive, it is difficult to adjust for the same reason, the method of dropping by weight for,
Since a very large floor area is required, and because the communication line is extended with a cap guide for the extension as shown in FIG. 20, the extension tension is extremely unstable. there were.

Therefore, the prior art described with reference to FIGS. 18 to 20 is used when the optical fiber is housed in the factory or during the installation work as described in the specification thereof. Later, it was not used in applications to handle excess length in the installed state.

On the other hand, conventionally, as a method of obtaining a cable having high tensile strength performance, a method of twisting a communication wire around the outer circumference of the tensile strength wire is known. Since such a cable has a large cross-sectional area and low flexibility, when a connector is attached to both ends of the cable and an extra length is generated in the vicinity of the terminal, it is large for storing the cable. I needed space.

There is also a demand for pulling out or pulling in a communication line while being connected to a communication network due to movement of equipment, construction of a building, etc. after the optical cable is once laid. The most demanded items are so-called drop communication lines from users of each communication line to branch points placed on utility poles, etc. The amount is required to be 10 m or more. Since the communication line storage box capable of processing such an extra length is always attached to the line, it is also necessary to have a low price and a small size in order to be widely used.

[0015]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and the storage box can be placed vertically and is compact, and in any case of pulling in or sending out a communication line, An object of the present invention is to provide a communication wire storage box that can be smoothly drawn in and sent out, and a communication wire laying and collecting method.

[0016]

According to a first aspect of the present invention, in a communication wire storage box, a fixed winding cylinder and a circumference of the winding cylinder are rotated to wind a communication wire around the winding cylinder. A mechanism for pulling out from the winding cylinder, and the mechanism for winding or pulling out, characterized in that when winding or pulling out the communication line, it has means for not rotating the communication line outside the communication line storage box, According to a second aspect of the present invention, in the communication wire storage box of the first aspect, a tensile strength wire passage hole is provided in a rotation center portion of a mechanism that rotates around a winding cylinder and winds or draws the communication wire around the winding cylinder. It is characterized by being.

According to a third aspect of the present invention, in the communication wire storage box, the winding cylinder, the rotating member having the communication wire communication hole and rotating on the front surface of the winding cylinder, and the rotating member are disposed in the vicinity of the communication wire communication hole. It has a retracting roller that rotates in synchronization with the rotation of the rotating member, and clamps and retracts the communication line from the communication line passage hole by the retracting roller,
Alternatively, in the communication wire storage box according to claim 3, the drawing roller is based on a difference between the rotation of the rotating member and the motion of the fixed member. It is characterized by being rotated.

According to a fifth aspect of the present invention, in the communication wire storage box, the winding cylinder around which the communication wire is wound, and the winding wire while guiding the communication wire supplied from the extension direction of the central axis of the winding cylinder between the brim of the winding cylinder. A communication wire guide that rotates around the wire is provided, and in the communication wire storage box of claim 5, the communication wire guide can be separated from the winding cylinder. is there.

According to a seventh aspect of the present invention, there is provided a method for laying and collecting a communication line, wherein the communication line is wound around or pulled out from the winding cylinder by a winding or drawing mechanism that rotates around a fixed winding cylinder. It is characterized in that the communication line is not rotated when it is pulled out.

In a method of laying a communication wire according to an eighth aspect of the present invention, the communication wire guided between the collars of the winding cylinder is extended by the communication wire guide that rotates along the circumference of the winding cylinder. It is characterized in that the communication line supplied in the direction is wound around the body of the winding body.

According to a ninth aspect of the present invention, in the communication wire collecting method, the communication wire supplied from the extending direction of the central axis of the winding cylinder is guided by the communication wire guide which rotates along the circumference of the winding cylinder to form the collar of the winding cylinder. It is characterized in that it is dropped in between and wound around the body of the winding cylinder.

According to a tenth aspect of the present invention, in the method of laying a communication wire, the communication wire is taken out from the periphery of the winding cylinder, and the tensile strength wire is pulled out from the tensile strength wire through hole in the center of the winding cylinder to surround the strength wire. The communication wire is sent while winding the wire around the wire. In the method of laying the communication wire according to claim 10, a plurality of winding cylinders are arranged in series and the tensile strength wire is passed through them. One of the tensile strength wires is passed through the hole, and a plurality of communication wires are taken out and wound around the same tensile strength wire. In claim 12, in the communication wire laying method of claim 11, After temporarily cutting the tensile strength wires passing through the tensile strength wire through holes of the plurality of winding cylinders and removing the tensile strength wires from the tensile strength wire through holes of some of the winding cylinders, the tensile strength wires are removed. It is characterized in that it is re-connected while being passed through the tensile strength wire through hole of another winding cylinder, and the communication line wound on a part of the winding cylinder is branched at this point. 13. The method for laying a communication wire according to claim 12, wherein a part of the branched communication wires is separated from a tensile strength wire through hole of a winding cylinder and a tensile strength wire is inserted through a tensile strength wire through hole of another winding cylinder. It is characterized in that it is sent out while passing a part of the communication wire branched through the other tensile strength wire around the other tensile strength wire.

According to a fourteenth aspect of the present invention, in the communication wire collecting method, the communication wire is taken in from a communication wire guide which rotates along the circumference of the winding cylinder, and the tensile strength wire is drawn in from the communication wire through hole of the winding cylinder. The communication line wound around the tensile strength line is collected.

[0024]

[Operation] The present invention draws a communication wire around a winding cylinder by a fixed winding cylinder and a mechanism that rotates around the winding cylinder and winds or draws a communication wire around the winding cylinder. By pulling it out, it is possible to prevent the communication line from being rotated outside the winding cylinder.

Therefore, by rotating the communication line guide while the lower end of the communication line is still connected by the connector and without disconnecting the upper port, the user can use the communication line at home. A long communication line can be easily wound around the fixed winding cylinder.

Further, by dividing the communication line guide into halves, the communication line guide and the communication line guide fixing portion can be separated from the winding cylinder, and the remaining portion fixed is the communication line extra length. It is possible to limit only the part and the winding cylinder which is the minimum necessary for winding this. Therefore, the extra length storage box of the present invention is inexpensive and can be made as small as possible in a range that does not adversely affect the communication line characteristics.

When the communication line is stored, a twist is added once to the communication line that is stored while the communication line guide makes one rotation outside the circumference of the winding cylinder. Can be resolved.

Further, a tensile strength wire through hole may be provided in the winding cylinder to draw out or pull in the tensile strength wire, and the communication wire is wound around the tensile strength wire while being sent out or wound around the tensile strength wire. The communication line can be collected.

[0029]

1 to 4 are for explaining a first embodiment of a communication storage box according to the present invention. FIG. 1 is a perspective view showing a diagonally front view with a part cut away. 2 is an explanatory view of the drive mechanism, FIG. 3 is an enlarged view of the drive unit, and FIG. 4 is a front view of the rotary plate. In the figure, 1 is a main body of a communication line storage box, 2 is a winding cylinder, 3 is a side plate, 4 is a lower end hole of a communication line, 5 is a communication line, 6 is a lower side connector, 7 is a rotating plate, and 8 is a rotating plate. Rotating shaft of rotating plate, 9 handle, 10 communication line guide, 11 drive unit, 12 toothed rail, 13 planetary gear, 14, 15
Is a bevel gear, and 16 and 17 are drawing rollers.

Winding cylinder 2 whose central axis is placed in the horizontal direction
One end of is fixed to the side plate portion 3 of the communication wire storage box body portion 1. The lower opening of the communication wire 5 wound around the winding body 2 is fed through the lower opening 4 of the side plate portion 3, and the lower opening side connector 6 is attached to the end thereof. A rotating plate 7 is provided at the other end of the winding cylinder 2, and a rotating shaft 8 of the rotating plate 7 penetrates the inside of the winding cylinder 2 and is provided with a removable handle 9. The rotary plate 7 is a side plate that rotates with respect to the winding cylinder 2. As can be seen from the front view of FIG. 4, the rotary plate 7 has a communication line guide 1
0 is opened. The communication line 5 wound around the winding cylinder 2 passes through the communication line guide 10 and is drawn in or sent out.

A drive unit 11 is provided to make the moving speed of the communication line proportional to the rotating speed of the rotary plate 7. As shown in FIG. 2, in this embodiment, the driving force of the drive unit 11 is such that the planetary gear 13 of the drive unit 11 comes into contact with the toothed rail 12 provided on the storage box body 1 that does not rotate. Since the rotating shaft of the rotating shaft is rotatably supported inside the rotating plate 7, the rotation of the rotating plate 7 causes the planetary gear 13 to rotate.
Is transmitted by rotating. The rotation of the rotary plate 7 is
The mechanism is such that the handle 9 is inserted into the central axis of the back surface of the storage box main body 1 and is manually rotated.

The planetary gear 13 has a spur gear portion and a bevel gear portion, and the spur gear portion meshes with the toothed rail 12 described above.
The bevel gear unit transmits the rotational force to the two bevel gears 14 and 15. Since the two bevel gears 14 and 15 mesh with the planetary gear 13 from the opposite directions, they rotate in the opposite directions. Bevel gear 1
Pull-in rollers 16 and 17 are interlocked with 4 and 15, respectively, and the rotation of the pull-in rollers 16 and 17 causes the communication line 5 to be drawn in or sent out from the communication line guide 10. This pull-in roller 1
As shown in FIG. 3, the surfaces 6 and 17 are always aligned in the direction perpendicular to the circular hole of the communication line guide.

At the time of drawing in the communication line, by rotating the handle 9 connected to the central axis of the rotary plate 7, the rotary plate 7 rotates and the communication line guide 10 rotates. At the same time, the planetary gear 13 on the rotary plate 7 rotates to move on the toothed rail 12, and its force is transmitted to the pull-in rollers 16 and 17 by the bevel gears 14 and 15, and the pull-in roller 16 and
17 rotates, and the communication line 5 has a length proportional to the rotation angle.
Pull in. Since the drawn-in communication line 5 has a constant length for one rotation of the rotary plate 7, it is sequentially stacked on the winding cylinder 2 without being entangled. In order to prevent the twist generated for one rotation of the rotating plate from being transmitted to the outside of the communication line storage box, the twisting is performed in the communication line storage box in the vicinity of the communication line storage box while holding it around the winding cylinder 2. However, the communication line outside the communication line storage box is not twisted.

On the other hand, when the communication line 5 is pulled out, the pull-in rollers 16 and 17 are rotated when the communication line 5 is pulled out, and the drive source 11 that interlocks therewith is rotated in the opposite direction. Can be adjusted appropriately. At this time, a load can be applied to the central shaft or rotation can be assisted if necessary. At the time of pulling out, the twist given inside the communication line storage box does not cause the twist outside the communication line storage box.

Due to this structure, the drive mechanism 11 is
It's much simpler, cheaper, and easier to adjust than traditional ones. Further, it is not necessary to install a large motor near the central axis, and the size can be reduced. The feeding tension of the communication line can be easily adjusted, and the tension can be set in accordance with the span of installation and other conditions. further,
Since it can be made vertical, the ground floor area can be very small.

Inside the rotating plate 7, the communication line guide 1
A fixed side plate having a diameter smaller than 0 may be provided and fixed to the winding cylinder 2. Thereby, the drawn communication line can be prevented from coming into contact with and rubbing against the rotary plate 7. In this case, it is not always necessary to use the rotary plate, and a rotary arm provided with a communication line guide may be used.

If a rotating plate fixing mechanism is added as a mechanism for fixing the communication line to the communication line storage box, it is possible to prevent the rotating plate from rotating for some reason when not in use, which is useful. is there. Also, if a rubber-like material with a hole about the outer diameter of the communication line is used as the communication line guide, it is possible to add a weak frictional resistance to the communication line transmission, and avoid unnecessary movement of the communication line. It is useful because

Further, the method of applying the pulling force to the communication line storage box is not limited to the method of directly attaching the handle to the rotating shaft of the rotating plate to rotate it as described in the embodiment, but the method of rotating using the gear system. It is also possible to drive from the plate side. In addition, making the handle detachable is also useful in terms of downsizing the device, and is also useful for avoiding accidents of accidentally turning the handle.

Next, an example of a prototype of the communication line storage box described with reference to FIGS. 1 to 4 will be described. The winding cylinder 2 has a diameter of 8
0 mm, 80 mm in length, and 200 mm in outer diameter of the rotary plate, the device described in FIG.
Pulling-in roller 16 and 17 so that m / min.
Set the diameter of.

In this state, the lower end of the communication line is taken out from the lower opening 4, and the detachable handle 9 is turned to rotate the 50m long diameter 2m.
The m optical fiber communication line 5 was pulled in. As a result, it was possible to retract the entire length in 2 minutes by rotating the handle. Next, the upper end of the retracted communication line 5 was pulled to send it out. Even in this case, there was no trouble such as entanglement of the unit, and the full length could be delivered in just over a minute.

Next, the diameter of the winding cylinder 2 and 1 of the rotary plate 7
The collapsed state was evaluated by changing the drawing dose per rotation, that is, by changing the degree of freedom of the stored communication line. As a result, the diameter of the winding cylinder 2 is small and the rotating plate 7
It was found that the larger the drawing dose per one rotation, the more easily the winding collapse occurs, and that the winding amount is limited when the winding cylinder 2 has a large diameter.

As the communication line, a line covered with polyethylene, vinyl chloride or the like is used for evaluation. From this result, as shown in FIG. 21, by using an apparatus having a structure in which the drawing dose per one rotation of the rotary plate 7 is 2.5π times or less the diameter of the winding cylinder, there is no collapse of the winding.
The device can be used under more suitable conditions.

The reason for this is that the communication wire drawn into the main body at a constant speed has a slightly different wound shape every turn, and the slight overlapped portion causes the communication wire to slide sideways and wind. This is considered to prevent the collapse, and it is considered that when the degree of freedom of the communication line becomes larger than a certain degree, the collapse of the winding due to the side slip frequently occurs.

Here, the amount of sending and drawing of the communication wire per one rotation of the rotary plate can be adjusted by the diameter of the drawing roller and the gear ratio of the drive unit.

FIG. 5 is a perspective view of a second embodiment of the communication storage box according to the present invention as seen obliquely from the front with a part cut away. In the figure, parts similar to those in FIG. 1 are assigned the same reference numerals and explanations thereof are omitted. 18 is a tensile strength wire, 19 is a tensile strength wire transmission hole,
20 is a tensile strength wire supply drum. In this embodiment, a communication wire can be twisted around the outer circumference of the tensile strength wire, and a cable in which the communication wire is twisted around the outer circumference of the tensile strength wire can be collected.

The tensile strength wire passage hole 19 penetrates the rotary shaft 8 of the rotary plate 7 and is open to the side plate portion 3 side. The rotating plate 7 is
Although it can be rotated by an appropriate drive mechanism in the same manner as described in FIG. 1, it is not shown. The handle may be provided by interposing a gear mechanism. The tensile strength wire 18 is pulled out from the tensile strength wire supply drum 20 through the tensile strength wire through hole 19, and at the time of recovery work, the tensile strength wire through hole 19 is pulled out.
Through the tensile strength wire supply drum 20. An interlocking mechanism such as a gear system that interlocks the member that interlocks with the movement of the tensile strength wire and the rotating plate 7 may be provided so that the communication wire moves at a constant ratio with respect to the pulling-in and pulling-out speed of the tensile strength wire 18. Good. The interlocking mechanism can be removed,
Only the communication line may be supplied by the handle. The communication line guide 10, the drive unit 11, the toothed rail 12, the planetary gear 13, the bevel gears 14, 15, the drawing rollers 16, 17 and the like may be the same as those described in FIGS. To do.

When pulling out the communication line at a constant speed when pulling out the tensile strength wire through the tensile strength wire feed hole 19, the rotary plate 7 is rotated in conjunction with this and the communication wire 5 is pulled into the tensile strength wire 18.
Supply while wrapping around. After pulling out for a predetermined length,
The tensile strength wire 18 may be placed as it is behind the storage box, or may be cut and held by a known method. Since the tensile strength wire is not a communication wire, it is easy to connect or hold it by a known method such as caulking prevention or adhesion. It is also possible to cut the tensile strength wire 18 and supply only the communication wire 5 at a place where the tensile strength wire is unnecessary.

When pulling in the communication line, the tensile strength line 18 is
When pulled through the tensile strength wire through hole 19 at a constant speed, the rotary plate 7 rotates in conjunction with this and the communication line 5 of a predetermined length is
Unwind from the tensile strength wire 18 and collect. The retracted communication line 5 is stored in the storage box. Since the pulled-in tensile strength wire 18 comes out behind the storage box, it can be cut and removed as necessary, or cut and stopped.
It may be stored behind the storage box.

As described above, the communication line which is difficult to use again after being cut is stored compactly in a state where the cross-sectional area is small, and when used, it is used as a tensile strength cable having a tensile strength wire. You can also

Further, even in a wiring form in which a portion where the tensile strength wire is unnecessary is partially present, such as laying from outside to indoors, it is possible to supply only the communication line, so that the length is continuous and the structure is different. There is an advantage that a cable having a portion can be laid.

During installation, in order to prevent the tensile strength wire and the communication wire from being displaced, the pulled tensile strength wire and the communication wire can be locally fixed to each other. It is advisable to use an adhesive or a retaining band.

The amount of sending and drawing of the communication wire per one rotation of the rotary plate 7 can be adjusted by the diameter of the drawing roller and the gear ratio of the drive unit. By adjusting the sending and drawing amount of the wire, it is possible to correspond to the desired winding pitch of the communication wire with respect to the tensile strength wire.

Although it has been described that the rotation speed of the rotary plate 7, that is, the moving speed of the communication line and the moving speed of the tensile strength line are interlocked with each other to have a constant ratio, it is not always necessary to interlock them, and the tensile strength is not necessarily required. If it can be laid so that the communication line is not loosened significantly with respect to the line, the strength of the communication line and the communication characteristics are not impaired, and there is no practical problem.

A prototype of the communication line storage box described with reference to FIG. 5 will be described. The winding cylinder 2 has a diameter of 80 mm and a length of 8
The apparatus described in FIG. 5 was used, in which the outer diameter of the rotary plate was 0 mm and the outer diameter of the rotary plate was 200 mm. At this time, it was designed as a gear system in which a 36-cm optical fiber single-cord cord was pulled in and out by one rotation of the rotary plate 7.
The tip of an optical fiber single-core cord is passed through the lower hole 4 of this device, and the rotating plate 7 is rotated by a handle to drive it to 50 m.
The long optical fiber single-core cord was stored in 1 minute and 40 seconds.

On the other hand, the tensile strength wire 18 has a diameter of 1.2 m.
A vinyl chloride-coated wire having a diameter of 2 mm was used for the galvanized steel stranded wire of m. For one rotation of the rotating plate 7,
The gear system was designed so that the 35 cm tensile strength line would move.

Next, the rotating plate 7 constitutes a gear mechanism so as to rotate by the movement of the tensile strength wire 18, and the tensile strength wire 18 is drawn through the tensile strength wire feed hole 19 in the center of the storage box at a drawing speed of 20 m / min. 40 meters long.

As a result, the rotary plate 7 was rotated, the optical fiber single-core cords were wound around the tensile strength wire 18 at a pitch of 35 cm, and the optical fiber cable could be laid. Subsequently, in order to carry out the recovery method, the tensile strength wire 18 was cut just behind the storage box and pulled back over 20 m. At this time, the pullback speed was changed from 5 m / min to 30 m / min, but the rotary plate 7 was rotated according to the pullback speed,
The optical fiber single-core cord could be smoothly collected in the storage box.

FIG. 6 is a schematic configuration diagram of the third embodiment of the present invention. In this embodiment, a communication line guide having a simplified structure is used. In the figure, 2 is a winding cylinder, 5 is a communication line, 6 is a lower opening side connector, 21 is a communication line guide tube,
22 is a support arm, 23 is a winding body collar, 24 is a central axis, and 25 is a curved surface guide. FIG. 3A shows a state in which the communication wire 5 is wound around the winding drum 2. The guide cylinder 21 provided as the communication line guide corresponds to the circular hole of the communication line guide 10 of the embodiment described in FIG. The communication line guide cylinder 21 in this embodiment is composed of a cylindrical portion that faces the communication wire 5 from the outside, and a bent portion that guides the direction of the communication wire toward the winding cylinder 2. The winding cylinder 2 is provided with a winding cylinder collar 23 to prevent the winding collapse. The communication line guide tube 21 is
It is supported by a support arm 22 from a central shaft 24 that is the center of rotation. When pulling in the communication line 5, the communication line 5 is supported by hand near the communication line guide cylinder 21 so that the communication line does not rotate, and the communication line guide cylinder 21 is gripped by a hand or another jig to By rotating the communication wire guide cylinder 21 around the winding drum 2 with the support arm 22 around the shaft 24, the communication wire 5 can be wound around the winding drum 2.

The communication line guide cylinder 21 is provided for the communication line 5 when it is not needed.
It is preferable to have a half-divided structure so as to be able to separate it from each other, and to integrate it with a fastening band or the like not shown. Since the communication wire guide tube 21 is configured to be separable, an unnecessary portion for holding the communication wire other than the winding cylinder 2 after the installation and collection work is completed, for example,
It is possible to remove the support arm 22, the communication line guide tube 21, and the like, and it is possible to make the storage box very simple without winding or drawing.

In order to pull out the communication wire wound around the winding barrel 2, it is sufficient to pull out the communication wire guide cylinder 21 while rotating it in the direction opposite to the above-described rotation direction.

When the communication line 5 is pulled out, (B)
As shown in the figure, the support arm 22 and the communication line guide tube 21
By attaching the hemispherical curved surface guide 25 to the winding cylinder 2 from which the above is removed, the communication wire slides on the surface of the curved guide 25 while changing the drawing direction of the communication wire to rotate on the circumference of the winding cylinder 2. While you can pull it out.

As one of the methods of using the communication line storage box of the present invention, at the factory or the like, the lower end side of the communication line to which a connector is attached is pulled out from the lower opening hole of the communication line storage box and this device is operated. Then, it is shipped with the communication wire of the specified length pulled in, transported to the installation site, the connector on the lower opening side is connected to the connection end near the communication wire storage box, the communication wire is sent out, and the other end It would be useful to take the cable to the side of the optical cable you want to connect to it and connect it.

Therefore, the cable can be effectively used as a cable used in an emergency such as when the laying length is unclear or as a cable for pulling in a customer.

7 to 12 are explanatory views of an embodiment of a method of laying a communication wire using the communication wire storage box described in the third embodiment. 7 to 11 show, in order, the manner in which three communication lines are dropped from a wiring device provided on a utility pole to three consumer homes. In the figure, 5 is a communication line, 3
1, 32, 33 are tensile strength wires, 34 are detents, 35,
36 and 37 are communication line storage boxes, 38 is a break point, 39 is a tensile strength wire T branching tool, 40 is a wiring device, 41, 42 and 43 are tensile strength wire drums, 44 is an optical cable connector, 45 is a consumer house, and 46 is a connection It is a point. The communication line 5 used at this time is
It is an optical fiber core wire having a diameter of 3 mm described in the first and second embodiments.

FIG. 7 is an explanatory diagram of a state in which three communication lines are connected to the wiring device. The tensile strength wire 31 is fed from the tensile strength wire drum 41 to the center of the communication wire storage boxes 35, 36, 37 around which the communication wire 5 is wound, and is fixed to the detent tool 34 of the wiring device 40. At the same time, each communication line 5 is connected to the wiring device 40 by the optical cable connector 44.

FIG. 8 shows the feeding process. Tensile strength line 3
1 is drawn out from the tensile strength wire drum 41, and the communication wire storage boxes 35, 36, 37 are not drawn around the tensile strength wire 31, and the communication wires 5 are sequentially drawn out. The three communication lines 5 are wound around and wound up.

FIG. 9 shows the preparation process for the first branch. At the time of reaching the first customer's house, the tensile strength line 31 is cut at the cutting point 3
The communication line storage box 37, in which the communication line 5 to be pulled down is stored, is detached from above the tensile strength wire 31 and another tensile strength wire drum 42 is prepared to be pulled down through the tensile strength wire 32.

FIG. 10 shows the first branching step. The tensile strength wire 31 cut at the cutting point 38 described in FIG. 9 is connected. The tensile strength wire T-branch 39 is attached to the connection point. Then, the tensile strength line 32 is attached to the tensile strength line T branching tool 39.
Connect. While pulling out the tensile strength wire 32 from the tensile strength wire drum 42, the communication wire 5 is wound around it. As a result, the communication line 5 can be pulled down and installed in the home of the customer. The other communication line storage boxes 35 and 36 are installed along with the tensile strength wire drum 41 while winding the communication wire 5 toward other consumers while similarly feeding out the tensile strength wire 31.

FIG. 11 is an explanatory diagram of the withdrawn state. Similarly to the case where the communication line storage box 37 is pulled down to the customer's home 45, the communication line storage box 36 is pulled down to another customer's home at the connection point 46. The communication wire storage box 35 advances the tensile strength wire 31 as it is while advancing the communication wire 5 around it, and drops it down to another customer's home.

In the customer's house 45, the communication line storage box 37 is separated from the tensile strength wire drum 42, the tensile strength wire 32 is held by the holding device 47, and the lower end of the communication wire 5 is connected to the optical cable connector 44 to be connected. Is completed.

In the above-mentioned method, a plurality of communication lines can be supported by one tensile strength wire as compared with the conventional communication wire laying method, so that the size of the entire cable becomes small, and
There is no tensile strength wire in the communication line that is stored as extra length,
It has the feature that the volume required to store the extra length is very small.

Further, since the tensile strength wires can be easily connected, the tensile strength wires can be branched at free positions,
Since the route of the communication line can be configured in accordance with this, it is possible to configure a network with a high degree of freedom.

FIG. 12 is a structural diagram of a carriage suitable for use in the work described with reference to FIGS. In the figure, 50 is a communication line storage box, 51 is a tensile strength wire feed tube, 52 is a tensile strength wire drum, 53 is a tensile strength wire, 54 is a communication wire, and 55 is a dolly. The trolley | bogie 55 is comprised so that the tensile strength wire drum 52 can be rotatably supported by the lower part, and the tensile strength wire 53 is comprised.
Is pulled out from the tensile strength wire drum 52 through the tensile strength wire feed tube 51. The communication wire storage box 50 is stacked so that the tensile strength wire feed tube 51 passes through the center thereof, and is fixed so as not to rotate by a positioning mechanism provided on the surface of the tensile strength wire feed tube (not shown). If the upper end of the communication line 54 is fixed to the tensile strength line near the retaining portion (not shown) of the tensile strength line 53 and the carriage 55 is moved,
At the same time, the communication wire 54 is pulled out from the communication wire storage box 50, and is installed while being wound around the tensile strength wire 53.

If another usable tensile strength wire is already laid when laying the communication wire, the communication wire and the tensile strength wire to be laid are suspended by the laid tensile strength wire. Therefore, it is possible to easily install the cable in the air. Even when such aerial installation is performed, by applying the method of the present invention, it is possible to twist and support a plurality of communication wires with respect to one tensile strength wire.
This is advantageous in that the weight is significantly reduced as compared with the case where a tensile strength wire is provided for each communication line.

On the other hand, when the cable is replaced or relocated, the function of pulling in and out of the communication line storage box can be fully utilized.

13A and 13B are explanatory views of a communication line storage box and a storage method according to a fourth embodiment of the present invention. FIG. 13A is an explanatory view at the time of retracting, and FIG. 13B is an explanatory view at the time of extending. is there. In the figure, 61 is a communication wire, 62 is a communication wire upper opening, 63 is a communication wire lower opening, 64 is a winding drum, 65 is a collar, 66 is a winding drum central axis, 67 is a lower opening hole, 68 is a communication wire guide, 69 Is a communication line guide entrance, 70 is an arm, 71 is a communication line guide fixing part, and 72 is a winding body fixing part.

The lower end 63 of the communication line 61 is a winding drum 64.
It is taken out from a lower opening 67 provided in the body of the robot and connected to a device or other communication line. The communication line guide 68 is
It is used when the communication line 61 is wound, and is supported by an arm 70 that rotates around a winding drum central axis 66. The arm 70 is supported by a communication line guide fixing portion 71 which is detachable from the winding body 64. The winding cylinder 64 is fixed to the winding cylinder fixing portion 72, and the winding cylinder itself does not rotate.

The arm 70 is rotated to move the communication line guide 68.
When the winding wire is rotated about the center axis 66 of the winding cylinder, the communication wire 61 introduced from the communication wire guide inlet 69 is drawn by the communication wire guide 68 and directed in the circumferential direction of the winding cylinder 64 while changing the direction by 90 °. And the collar 65 of the winding drum 64
And is wrapped around a fixed winding cylinder 64.

The wound communication line 61 can be easily fixed by, for example, packing a fixing tool such as a sponge between the collars 65 of the winding body 64 as a collapse collapse preventing tool, and preventing the collapse of the winding. .. In addition to this, various methods such as a method of winding a cloth tape around the wound communication line and a method of fixing the upper mouth at an appropriate place can be used as a method for preventing the winding barrel from being unwound.

On the other hand, at the time of pulling out the communication line, the above-mentioned winding collapse preventing tool is removed, and the communication line is pulled from a position slightly apart in the axial direction of the winding cylinder.
As shown in FIG. 3 (B), the communication line can be easily pulled out while the drawn-out portion rotates around the brim 65 of the winding cylinder. 73 and 74 are other communication lines connected to the lower and upper openings of the communication line 61 by connectors 75 and 76.

As a specific example, a vinyl chloride-coated optical fiber cable having a diameter of 2 mm was stored and unwound. As the winding cylinder 64 shown in FIG. 13 (A), a body diameter of 6 cm,
A plastic winding cylinder with a collar diameter of 14 cm and a collar width of 2 cm was manufactured. The communication wire guide fixing part was fixed to the inside of the cylinder, and the outside of the collar was wrapped and the circumference of the center of the cylinder was 7.5 cm in radius. A communication line guide rotating above was provided. The communication line guide has a cylindrical shape with an inner diameter of 6 mm and can be divided in half. In addition, this communication line guide is shown in FIG.
As shown in Fig. 4, a pressing roller 77 that presses the wrapped communication wire against the winding cylinder to prevent the arrangement from being disturbed during winding and prevents collapse of the winding, and a roller presser that generates a force to press the winding wire toward the winding cylinder. Spring 78
Attached. The width of the pressing roller 77 was set to 1.8 cm, which was slightly smaller than the inner width of the collar of the winding cylinder. The communication line guide 68 is divided in half and is configured to be attachable to and detachable from the communication line 61. Reference numeral 79 is a communication line guide integrated metal fitting, which is a half-divided communication line guide 68.
After inserting the communication line so as to sandwich the communication line, the communication line guide 68 is fastened and integrated by the band-shaped integrated metal fitting 79. Further, in order to remove the communication line guide 68, the integrated metal fitting 79 is removed to remove the communication line guide 6.
8 can be divided, and the communication line guide 68 can be easily removed from the communication line by removing the communication line guide fixing portion 71 from the winding cylinder.

Using this communication line storage box, the above-mentioned communication line was stored for 70 m. First, the communication wire lower opening was guided and fixed to the inside of the winding cylinder through a lower opening formed in an oblique direction so that the communication wire would not be bent at an acute angle to cause an abnormality. Next, the winding cylinder was fixed. In this state, a communication line guide or the like having the structure shown in FIG. 14 was connected to the winding drum as shown in FIG. 13 (A), and the communication line guide was divided and passed through the communication line to be integrated.

Next, the communication line guide was held by hand from the side and rotated clockwise around the axis of the winding cylinder. As a result,
The communication wire was wound around the winding cylinder as the communication wire guide rotated, and was completely wound up in 5 minutes. During the winding, the communication wire was wound around the entire width of the collar of the winding drum by the pressing roller evenly, and the wound state was also good without extremely thick or thin portions. Further, during this period, since the optical lines connected to the upper and lower ports were not cut, no increase in transmission loss was observed.

After the winding was completed, the winding cylinder was filled with sponges from all sides to prevent the communication wire from being broken, and then the communication wire guide and other jigs were separated. As a result, only the winding cylinder with a small diameter and the communication wire wound around it remained, and the communication wire of 70 m was stored very compactly.

Next, an attempt was made to extend the communication line by standing 1 m away from the winding cylinder on its axis. After removing the sponge, by simply pulling, the communication line is extended while releasing the twist generated during storage and changing the position to be extended so that it rotates on the brim of the winding drum. The delivery is completed.

FIG. 15 is a perspective view of the fifth embodiment of the present invention. In the figure, 61 is a communication line, 64 is a winding cylinder, and 65.
A collar, 68 is a communication line guide, 80 is a circling tool, 81 is a guide rail, and 82 is an elastic plate. In this embodiment, the guide rail 81 is formed around the brim 65 of the winding cylinder 64, and the orbiting tool 80 to which the communication line guide 68 is attached is circulated on the guide rail 81. Since the guide rail 81 is sufficient to have a groove formed on the side surface of the brim, the communication line guide can be attached with a simple structure.

The elastic plate 82 is provided in order to hold down the wound communication wire and prevent the winding collapse.
It is preferable to use rubber or the like.

FIG. 16 is for explaining the sixth embodiment of the present invention. FIG. 16A is a schematic perspective view,
FIG. 3B is a perspective view of a main part. In the figure, 61 is a communication line, 64 is a winding cylinder, 65 is a collar, 68 is a communication line guide, 69 is a communication line guide inlet, 70 is an arm, 83 is a drive unit, 84 is a crank arm, 85 is a handle, and 86 is a handle. The crank 87 is a crank length adjusting unit. In this embodiment, the crank arm 84 provided in the drive unit 83 is manually rotated by the handle 85, and the rotational force is transmitted to the arm 70 by the crank 86, and the communication line guide 68
Was circularly moved around the central axis of the winding cylinder 64. The communication line 61 can be drawn through the communication line guide 68 and wound around the winding cylinder 64.

In this structure, by adjusting the length of the crank 86 by the crank length adjusting section 87,
It is possible to easily drive the communication line guide 68 of the winding cylinder 64 installed in a place where it is difficult to work.

As means for driving the communication line guide 68,
An electric device such as a motor can be used. In particular, when the storage box is installed at a high place and the communication line is laid, driving by a motor or the like is effective, and it is convenient to operate it by remote control using an infrared controller or the like.

Further, the winding cylinder 64 and the communication line guide 68
It is also useful to add a mechanism for reciprocally moving any of the above in the direction of the central axis of the winding cylinder to wind the communication wire around the cylinder evenly.

FIG. 17 shows an example of a drive shaft used in the traverse mechanism. By providing a spiral groove 89 in the opposite direction to the rotary shaft 88 so as to form one, and by providing an outer cylinder 90 having a guide pin that is prevented from rotating and engaged with the spiral groove, the rotary shaft 88 Can be rotated to reciprocate the outer cylinder 90. The outer tube 90 allows the communication wires to be aligned and wound by traversing the exit of the communication wire guide with the width between the collars of the winding cylinder. The traverse mechanism may be used to reciprocate the winding cylinder in the central axis direction. The adoption of the traverse mechanism is useful in that the communication line can be wound without causing any abnormality except the collapse of the winding.

In the above-mentioned embodiments, the communication line guides 68 each have a cylindrical shape, but the present invention is not limited to this. Such as roller and ring
It is possible to use another method in which the traveling direction of the communication line is directed from the central axis direction of the winding cylinder and the communication line can be guided into the collar of the winding cylinder.

When the winding cylinder is left for a long period of time, it is better to cover it with some kind of cover. It is useful for preventing damage due to external force on communication lines and deterioration due to solar radiation. In addition, the present invention can be used not only for storing the extra length of the communication line but also for storing the long communication line in a compact manner, and can be used for storing and transporting the communication line.

The smaller the diameter of the winding cylinder for storing the communication line, the better the storage efficiency. However, since the communication line is wound around the drum of the winding cylinder once for each rotation, the optical cable is used. When applied to, the cable diameter is limited because the transmission loss occurs because the cable is turned. When the diameter of the winding cylinder is 25 mm or less, for the single mode fiber, 1.
It has been confirmed that a loss increase of 0.02 dB / 50 m or more occurs in the 55 μm band. This increase in loss is a value that cannot be ignored over long distances. Therefore, for an optical cable with a diameter of up to 4 mm, it is desirable that the winding cylinder has a diameter of 25 mm or more.

[0096]

As is apparent from the above description, according to the present invention, it is possible to easily carry out the work of winding a communication line such as a copper wire or an optical fiber on the site and pulling it out at the site of installation, and to make an extra length. It is also effective for the treatment of the above, and there is an effect that it is possible to provide a communication line storage box which is very practical in terms of manufacturing cost and maintenance. There is also an effect that it can be applied to installation using tensile strength wires.

Further, the portion fixed to a house or the like can be only a small and inexpensive winding cylinder, and a simple jig can be connected to this to easily accommodate a long communication line extra length. Therefore, it is effective when used as a system for withdrawing optical fiber communication lines from customers.

Further, by making a jig such as a communication line guide separable from the winding cylinder, these jigs can be shared by a plurality of winding cylinders, which is economically effective.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a communication storage box according to the present invention as seen from a diagonally front side with a part cut away.

FIG. 2 is an explanatory diagram of a drive mechanism shown in FIG.

FIG. 3 is an enlarged view of a driving unit in FIG.

4 is a front view of the rotary plate of FIG. 1. FIG.

FIG. 5 is a perspective view of a communication storage box according to a second embodiment of the present invention as seen obliquely from the front with a part cut away.

FIG. 6 is a schematic configuration diagram of a third embodiment of the present invention.

FIG. 7 is an explanatory diagram of an attaching step in an embodiment of the communication wire laying method of the present invention.

FIG. 8 is an explanatory view of a feeding process in an embodiment of the communication wire laying method of the present invention.

FIG. 9 is an explanatory diagram of a branch preparation step in one embodiment of the communication wire laying method of the present invention.

FIG. 10 is an explanatory diagram of a branching step in one embodiment of the communication wire laying method of the present invention.

FIG. 11 is an explanatory view of a branched state in an embodiment of the communication wire laying method of the present invention.

FIG. 12 is a structural diagram of a trolley used in an embodiment of the communication wire laying method of the present invention.

FIG. 13 is an explanatory diagram of the fourth embodiment of the present invention.

FIG. 14 is a perspective view of the communication line guide in FIG.

FIG. 15 is a perspective view of a fifth embodiment of the present invention.

FIG. 16 is an explanatory diagram of the sixth embodiment of the present invention.

FIG. 17 is an explanatory diagram of an example of a traverse mechanism.

FIG. 18 is an explanatory diagram of a state in which a communication line is pulled into the communication line storage unit in the communication line storage unit according to the related art.

FIG. 19 is an explanatory diagram of a state in which the communication line is housed in FIG. 18.

FIG. 20 is an explanatory diagram showing a state where the communication line is pulled out from the storage section.

FIG. 21 is an explanatory diagram of a method for selecting the diameter of the winding cylinder.

[Explanation of symbols]

 1 Communication Line Storage Box Main Body 2 Winding Cylinder 3 Side Plate 5 Communication Line 7 Rotating Plate 9 Handle 10 Communication Line Guide 11 Drive Part 12 Toothed Rail 13 Planetary Gear 14,15 Bevel Gear 16,17 Pulling Roller 61 Communication Line 62 Communication Line upper port 63 Communication line lower port 64 Winding body 65 Collar 68 Communication line guide 70 Arm 71 Communication line guide fixing part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (31) Priority claim number Japanese Patent Application No. 3-167701 (32) Priority date Hei 3 (1991) June 12 (33) Priority claim country Japan (JP) (72) Inventor Shigeru Tanaka 1 Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa Sumitomo Electric Industries, Ltd. Yokohama Works (72) Inventor Shigeru Tomita 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Hiroyuki Akimoto 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation

Claims (14)

[Claims] 1. A fixed winding cylinder, and a mechanism for rotating around the winding cylinder and winding a communication wire around the winding cylinder or pulling out the communication wire from the winding cylinder, and the winding or pulling mechanism is a communication wire. A communication line storage box having means for preventing the communication line outside the communication line storage box from rotating during winding or drawing. 2. A tensile strength wire through hole is provided at a center of rotation of a mechanism that rotates around a winding cylinder and winds a communication wire around the winding cylinder or pulls out the communication wire from the winding cylinder. Communication line storage box described in. 3. A winding cylinder, a rotating member having a communication wire transmission hole and rotating on the front surface of the winding cylinder, and a rotating member arranged near the communication wire transmission hole and rotating in synchronization with rotation of the rotating member. A communication line storage box, which has a pull-in roller for pulling in or sending out the communication line from the communication line through hole by sandwiching the communication line with the pull-in roller. 4. The communication wire storage box according to claim 3, wherein the pull-in roller is rotated based on a difference between the rotation of the rotating member and the movement of the fixed member. 5. A winding cylinder around which the communication wire is wound, and a communication wire guide that rotates around the winding cylinder while guiding the communication wire supplied from the extension direction of the central axis of the winding cylinder between the collars of the winding cylinder. Communication line storage box characterized by the following. 6. The communication line storage box according to claim 5, wherein the communication line guide is separable from the winding cylinder. 7. A method for laying and collecting a communication line by winding or drawing a communication line to or from the winding cylinder by a winding or drawing mechanism that rotates around a fixed winding cylinder. , A method of laying and collecting communication lines, characterized in that the communication lines are not rotated. 8. A communication wire guide, which rotates along the circumference of the winding cylinder, winds the communication wire wound between the collars of the winding cylinder and the communication wire supplied in the extension direction of the central axis of the winding cylinder. A method for laying a communication wire, which comprises winding the wire around a body. 9. A communication line supplied from the extension direction of the center axis of the winding cylinder is dropped between the collars of the winding cylinder by a communication line guide that rotates along the circumference of the winding cylinder.
A method for collecting communication lines, characterized by winding around a body of a winding body. 10. A communication wire is taken out from around the winding cylinder, a tensile strength wire is pulled out from a tensile strength wire through hole at a central portion of the winding cylinder, and the communication wire is sent while being wound around the tensile strength wire. Characteristic communication line installation method. 11. A plurality of winding cylinders are arranged in series,
The communication wire laying method according to claim 10, wherein a single tensile strength wire is passed through the tensile strength wire passage holes to take out a plurality of communication wires and are wound around the same tensile strength wire. 12. The tensile strength wire passing through the tensile strength wire through holes of a plurality of winding cylinders is cut once, and the tensile strength wire is removed from the tensile strength wire through holes of some of the winding cylinders, and then the tensile strength wire is replaced with another wire. 12. The communication wire laying method according to claim 11, wherein the communication wire is reconnected in a state of being passed through the tensile strength wire passage hole of the winding cylinder, and the communication wire wound on a part of the winding cylinder is branched at this point. . 13. A tensile strength wire that is different from the tensile strength wires that are passed through the tensile strength wire through holes of the winding cylinders of some of the branched communication wires is passed through the tensile strength wire through holes. The communication wire laying method according to claim 12, wherein the communication wire is sent while winding a part of the branched communication wire around another tensile strength wire. 14. A communication wire is taken in from a communication wire guide that rotates along the circumference of the winding cylinder, and a tensile strength wire is drawn from a communication wire through hole of the winding cylinder so that the wire is wrapped around the strength wire. A communication line collecting method, comprising collecting the communication line.