JP4184726B2 - Fixing member and communication cable fixing method using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing member for fixing a communication cable in a branch pipe rod located at the end of the branch pipe when the communication cable is laid on the main pipe and the branch pipe which are underground pipes and the use of the fixing member. The present invention relates to a communication cable fixing method.
[0002]
[Prior art]
Currently, construction of a high-speed / ultra-high-speed communication network is underway, and there are two methods for laying a communication cable as a medium: an aerial method and an underground method. The communication cable laying in the underground burial method has characteristics such as protecting the spatial environment (aesthetics of the ground landscape, etc.) and being resistant to disasters such as earthquakes and typhoons, compared to the laying method in the aerial method. In particular, sewer pipes in underground pipes have branch pipes (mounting pipes) that are connected to the main pipes already led to homes, and the upper part of the pipes are vacant spaces, so communication with each home is possible. It is attracting attention as an important infrastructure for the FTTH (Fiber To The Home) project that draws in cables.
[0003]
When laying a communication cable in each house using a sewer pipe, the communication cable passes from the sewer main to the branch pipe, and the branch pipe tub at the end of the branch pipe (refers to the sewage basin, on the residential land or on the road) ) Is led to each house by digging underground.
[0004]
A branch cable (communication cable) of about 24 to 200 cores is laid from the communication base to the underground pipe main, and each house is connected to each house by a connecting branch box in a manhole that connects the underground pipe mains. Branch out a cable (communication cable) of about 2 to 4 cores (more than the housing complex) for laying. And, there is a method of laying cables from manholes and so on to each house from the main pipe through branch pipes, and it is planned to lay communication cables in all houses, but in reality it is an empty house or for the time being Some homes do not want to be laid.
[0005]
Therefore, since the timing of laying the communication cable varies depending on the house, conventionally, the branch pipe 10B and the drain pipe 10C shown in FIG. 10 are connected to the extra length of the communication cable to the termination box provided in each house. The communication cable 10E and the sheath tube 10D into which the communication cable 10E is inserted are circulated on the inner surface of the tube rod 10A and fixed with a fastener 10F such as a saddle. Further, when laying the communication cable 10E, the communication cable 10E is inserted into the communication pipe 10G newly connected to the branch pipe rod 10A, and is protected to the vicinity of the outer wall of each house with the communication pipe 10G. 10E was led and the communication cable 10E was wired to the termination box provided in each house.
[0006]
[Problems to be solved by the invention]
However, in the case where the diameter of the branch pipe rod is small, such as φ150 mm or less, it is difficult to fix the communication cable and the sheath tube through which the communication cable is inserted by placing a hand in the branch pipe rod, It took time to attach the fasteners to the wall in the branch pipe cage. In addition, it was difficult to work because many of the branch pipe rods having a depth of 70 cm or more were used so that the rat would not crawl up from the branch pipe rods.
[0007]
In addition, when the communication cable is inserted into a bendable sheath (guide tube) like the tension guide method (registered trademark), the sheath tube is fixed to the upper side of the main pipe and the branch pipe of the underground conduit. Therefore, it was necessary to apply tension to the sheath tube in the branch tube tub located at the end of the branch tube and fix the sheath tube so that it does not loosen in the main pipe or branch pipe of the underground conduit. In addition, in the conventional method of fixing the communication cable and the sheath tube through which the communication cable is inserted with the saddle, it is difficult to apply sufficient tension to the sheath tube, and it is difficult to loosen the sheath tube in the main tube or the branch tube. There was a problem in fixing to the upper side of.
[0008]
In the present invention, in consideration of the above-mentioned problems, a communication cable and a sheath through which the communication cable is inserted in a branch pipe rod located at the end of the branch pipe of the underground pipe branching into the main pipe Can be fixed with tension applied to the tube It is a first object of the present invention to provide a fixing member and a communication cable fixing method using the same. In addition, it is possible to easily fix the communication cable and the sheath tube through which the communication cable is inserted even if the branch pipe is small and it is difficult to fix the communication cable and the sheath tube through which the communication cable is inserted. And a communication cable fixing method using the same fixing member Second Objective.
[0009]
[Means for Solving the Problems]
The fixing member according to claim 1 for solving the above-described problem is laid from the main pipe inside a branch pipe rod located at an end of the branch pipe of the underground pipe branching into the main pipe. A fixing member capable of holding and fixing a communication cable or a sheath tube through which the communication cable is inserted, and is equal to the inner surface shape of the branch pipe rod It has an outer surface shape and can be deformed so that the outer periphery is widened. To be equal to the inner surface shape of the branch pipe Meet any of the configured, And the fixing member main body which has at least 1 part | minute parting part in the circumferential direction, the wedge piece fitted to the said parting part of the said fixing member main body, and the communication currently formed in the inner surface of the said fixing member main body or the said wedge piece It is comprised with the fastener which fixes the sheath tube in which the cable or the communication cable was penetrated.
With such a configuration, the fastener is directly attached to the branch pipe by fixing the communication cable or the sheath tube through which the communication cable is inserted with the fastener formed on the inner surface of the fixing member main body or the wedge piece. Even if the work is not required and the branch pipe is small, it is possible to easily fix the communication cable or the sheath tube through which the communication cable is inserted.
[0010]
In the fixing member according to claim 2, a communication cable laid from the main pipe is inserted inside the branch pipe rod located at the end of the branch pipe of the underground pipe pipe where the branch pipe branches from the main pipe. A fixing member that can hold and fix the sheath tube, and is equal to the inner surface shape of the branch pipe rod It has an outer surface shape and can be deformed so that the outer periphery is widened. To be equal to the inner surface shape of the branch pipe Meet any of the configured, And the fixing member main body which has at least 1 part | minute parting part in the circumferential direction, the wedge piece fitted to the said parting part of the said fixing member main body, and the communication currently formed in the inner surface of the said fixing member main body or the said wedge piece A fastener and biasing means for loosely fitting a sheath tube through which a cable is inserted, and the book is fixed to the sheath tube through which the communication cable is inserted and the biasing means is sandwiched between the fastener and the book And a fastening material that holds the sheath tube in a biased state biased in a direction away from the tube.
With such a configuration, the communication cable sheath tube is loosely fitted with the fastener formed on the inner surface of the fixing member main body or the wedge piece, and the urging member is compressed between the sheath tube and the fastener by the tightening material. However, it is possible to install a sheath pipe through which a communication cable is inserted in the main pipe and the upper part of the branch pipe, and the flow of sewage and the like in the main pipe and the branch pipe. Does not hinder. In addition, the said fastening material may consist of a hollow tube, and may be latched with respect to the said sheath tube penetrated by the said hollow tube.
[0011]
Claim 4 The fixing member according to claim 1. Any of ~ 3 In the above, the dividing portion of the fixing member main body is formed with a tapered surface inclined with respect to the axial direction thereof, and the wedge piece is formed with a tapered edge adapted to the tapered surface. It is.
With such a configuration, when the taper surface is tapered toward the lower side of the branch pipe ridge, a force for moving the fixed member main body to the lower side of the branch pipe tub by forming a fastener on the fixed member main body. However, it works from the communication cable or the sheath tube through which the communication cable is inserted, so that the tapered surface bites into the tapered edge of the wedge piece, and the fitting state with the wedge piece is further increased. In addition, when the tapered surface is tapered toward the lower side of the branch pipe ridge, a force for trying to move the wedge piece to the lower side of the branch pipe ridge is applied to the wedge piece by forming a fastener on the wedge piece. Working from the inserted sheath tube, the taper edge bites into the tapered surface of the fixing member main body, and the fitting state with the fixing member main body is further enhanced.
[0012]
Claim 5 The fixing member according to claim 4 And a wedge is formed on the wedge piece. The tapered edge is formed so that the wedge piece tapers in a direction opposite to the direction away from the main pipe, and the tapered surface is formed so as to match the tapered edge. It is characterized by.
With such a configuration, when the taper surface is tapered toward the lower side of the branch pipe ridge, a force for trying to move the wedge piece to the lower side of the branch pipe ridge is generated by forming a fastener on the wedge piece. Or it works from the sheath tube through which the communication cable is inserted, and the taper edge bites into the tapered surface of the fixing member main body, and the fitting state with the fixing member main body is further enhanced.
[0013]
Claim 6 The fixing member according to claim 4 or 5 In The tapered edge is formed with an inclined edge that is inclined so that the cross-sectional shape of the wedge piece along the direction orthogonal to the axial direction tapers from the outer surface to the inner surface of the fixing member body, The tapered surface is formed with an inclined surface inclined from the outer surface to the inner surface of the fixing member main body so as to match the tapered edge. It is characterized by this.
With such a configuration, even if vibration due to an earthquake or a vehicle is transmitted to the fixing member and the wedge piece in the branch pipe rod, the wedge piece does not fall off inside the branch pipe rod and come off.
[0014]
The communication cable fixing method according to claim 7, wherein the communication cable is laid from the main pipe inside the branch pipe rod located at the end of the branch pipe of the underground pipe branching from the main pipe. A communication cable fixing method using a fixing member capable of holding and fixing a sheath pipe through which a communication cable is inserted, and is equal to the inner surface shape of the branch pipe rod It has an outer surface shape and can be deformed so that the outer periphery is widened. To be equal to the inner surface shape of the branch pipe Meet any of the configured, And by fitting and attaching a wedge piece to the divided part of the fixing member main body having at least one divided part in the circumferential direction, and a fastener formed on the inner surface of the fixed member main body or the wedge piece, The communication cable or a sheath tube through which the communication cable is inserted is fixed.
According to such a method, the fastener is directly attached to the branch pipe rod by fixing the communication cable or the sheath tube through which the communication cable is inserted with the fastener formed on the inner surface of the fixing member main body or the wedge piece. Even if the branch pipe rod is a small one that does not need to be attached and does not need to be attached, the communication cable or the sheath tube through which the communication cable is inserted can be easily fixed.
[0015]
The communication cable fixing method according to claim 8, wherein the communication cable laid from the main pipe inside the branch pipe rod located at the end of the branch pipe of the underground pipe branching into the main pipe is branched. A communication cable fixing method using a fixing member capable of holding and fixing a inserted sheath tube, which is equal to the inner surface shape of the branch pipe rod It has an outer surface shape and can be deformed so that the outer periphery is widened. To be equal to the inner surface shape of the branch pipe Meet any of the configured, The wedge member is fitted and attached to the divided portion of the fixing member main body having at least one divided portion in the circumferential direction, and the fastener formed on the inner surface of the fixing member main body or the wedge piece, and The urging means positioned on the upper part of the fastener is loosely fitted with the sheath pipe through which the communication cable is inserted, and the urging means is attached to the fastener by a fastening material attached to the sheath pipe through which the communication cable is inserted. The sheath tube through which the communication cable is inserted is applied to the sheath tube through which the communication cable is inserted, and the sheath tube through which the communication cable is inserted is held at the upper part in the branch pipe. It is characterized by.
According to such a method, the sheath tube through which the communication cable is inserted is loosely fitted by the fastener formed on the inner surface of the fixing member main body or the wedge piece, and the biasing member is attached to the fastener by the tightening material. By holding while compressing, it is possible to install a sheath pipe through which a communication cable is inserted on the upper side of the main pipe and the branch pipe, and the sewage in the main pipe and the branch pipe Etc. can be prevented from being disturbed.
[0016]
Claim 9 The communication cable fixing method according to claim 1, 7 or 8 In A taper edge is formed on the wedge piece so as to taper in a direction away from the main pipe, and a taper surface adapted to the taper edge is formed on the dividing surface of the fixing member. The fastening member is formed on the fixing member main body.
According to such a method, the force to move the fixing member main body to the lower side of the branch pipe works from the communication cable or the sheath pipe through which the communication cable is inserted, and the tapered surface bites into the tapered edge of the wedge piece. The engagement state with the wedge piece is further enhanced, and the taper surface of the fixing member main body bites into the taper edge of the wedge piece, so that the outer periphery of the fixing member main body expands, and the outer surface of the fixing member main body and the wedge piece and the branch pipe The frictional force with the inner surface of the heel increases, and the fixing holding force of the fixing member main body and the wedge piece increases.
[0017]
Claim 10 The communication cable fixing method according to claim 1, 7 or 8 In A taper edge is formed on the wedge piece so as to taper in a direction opposite to a direction away from the main pipe, and a taper surface adapted to the taper edge is formed on the divided surface of the fixing member. Cage In addition, a fastener is formed on the wedge piece.
According to such a method, the force to move the wedge piece to the lower side of the branch pipe works from the communication cable or the sheath pipe through which the communication cable is inserted, and the tapered edge bites into the tapered surface of the fixing member body. The fitting state with the fixing member main body is further enhanced, and the outer periphery of the fixing member main body is expanded by the taper edge of the wedge piece biting into the tapered surface of the fixing member main body, branching from the outer surface of the fixing member main body and the wedge piece. The frictional force with the inner surface of the tube rod increases, and the fixing holding force of the fixing member main body and the wedge piece increases.
[0018]
Claim 11 The communication cable fixing method according to claim 1, 9 or 10 In The tapered edge is formed with an inclined edge that is inclined so that the cross-sectional shape of the wedge piece along the direction orthogonal to the axial direction tapers from the outer surface to the inner surface of the fixing member body, The tapered surface is formed with an inclined surface inclined from the outer surface to the inner surface of the fixing member main body so as to match the tapered edge, The wedge piece is fitted into the fixing member main body.
By such a method, even if vibration due to an earthquake or a vehicle is transmitted to the fixing member and the wedge piece in the branch pipe rod, the wedge piece does not fall off inside the branch pipe rod and come off.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In the following description, the underground pipe line is described as a sewer pipe, but the pipe line system and pipe type are not particularly limited.
[0020]
FIG. 1 is a cross-sectional view showing an example of an outline of an underground conduit. In FIG. 1, reference numeral 1 denotes a main pipe of a sewer pipe, which is piped between a manhole 2 and another manhole 3. The branch pipes 4 and 5 branch from the upper side of the main pipe 1 at the branch pipe ports 6 and 7. Connected up to.
[0021]
In general, the main pipe 1 is laid at a depth of several meters along the road. As shown in FIG. 2, branch pipe ports 6 and 7 are formed on the upper side of the main pipe 1 on the oblique side. 5 is connected to the branch pipe rods 8 and 9 at different angles from the branch pipe ports 6 and 7.
[0022]
In addition, there are two types of sewer systems: a shunt system that uses rainwater as a separate pipe, and a confluence system that flows rainwater and sewage together. In these sewer systems, in the case of a shunt system, the attachment pipes connected to the sewer attachment pipe which is a branch pipe and the rainwater pipes connected to the rainwater pipe correspond to the branch pipes 8 and 9 of this embodiment. In the case of the merging type, the attachment pipe rod corresponds to the branch pipe rods 8 and 9 of this embodiment. In addition, when the power cable is supplied to each home by underground piping, the power fence connected to the power pipe corresponds to the branch pipes 8 and 9 of the present embodiment and can be used. .
[0023]
FIG. 3 shows the situation of each ridge as an example of sewerage. The drainage pipe 35 connected to the drainage pipe 30 of the bathroom, toilet, kitchen, etc. of the house 20 or the joining pipe 34 for joining the drainage pipe 31 from the drainage pipe 35, the drainage pipe 32 and the branch pipes 8,9 In many cases, a connecting rod 33 for connecting the drain pipe 10 is installed as a sewage tank for inspection in the residential land. The present invention can also be applied to the case where the communication cable 18 or the sheath tube 16 into which the communication cable 18 is inserted is fixed in the inspection sewage tank using a fixing member described later. In particular, as a communication user, if the communication cable 18 is routed as close as possible to the outer wall of the residential land as much as possible, there is less risk of disconnection and the aesthetic value is high. In many cases, the communication cable 18 is laid using, for example.
[0024]
First, when laying a communication cable or the like in the main pipe 1, a TV camera or the like is used in the main pipe 1, the distance between the manholes 2 and 3, and each branch pipe 4 in the main pipe 1 from the manhole 2. 5, the distance from the branch pipes 6 and 7, the distance from the branch pipes 4 and 5 to the branch pipe rods 8 and 9, the depth of the branch pipe rods 8 and 9 are accurately measured (see FIG. 1).
[0025]
Next, the communication cable 18 to the termination box of each house where the communication cable 18 is desired and the sheath pipe 16 through which the communication cable 18 is inserted are laid to the branch pipes 8 and 9. In this embodiment described later, a case where the communication cable 18 uses the sheath tube 16 inserted in the sheath tube in advance will be described, but the communication cable 18 itself can be similarly applied.
[0026]
As a method for laying the communication cable 18 and the sheath pipe 16 through which the communication cable 18 is inserted to the branch pipes 8 and 9, a known method can be used. For example, in a manhole where about 24 to 200 cores of communication cables are laid from the communication base to the mains in the underground pipelines and the underground pipelines are connected to each other, the connection branch boxes are used to form each house. Branch the communication cable of 2 to 4 cores (more than the housing complex) for laying up to the end box, and branch from the main pipe by inserting the communication cable into a sheath pipe (guide pipe) for protection of the communication cable. Lay down the branch pipe through the pipe.
[0027]
In addition, referring to FIG. 1, an example of a communication cable to the branch pipe and a laying method of the sheath pipe through which the communication cable is inserted will be described. A sheath pipe ( Guide tube) is installed with fixed members arranged at a predetermined interval, or a tension wire rope is inserted into the sheath tube, and both ends of the wire rope are fixed in manholes 2 and 3 located at both ends of the sheath tube. Then, tension can be applied to the wire rope for tension, and the sheath pipe can be installed in the upper part of the main pipe 1. A communication cable is inserted into a sheath pipe installed in the upper part of the main pipe 1, and a hole is provided in the sheath pipe at positions close to the branch pipe ports 6 and 7 in the branch pipes 4 and 5 located between the manholes 2 and 3. The communication cable taken out from the hole is laid to the branch pipe rods 8 and 9 located at the end of the branch pipe. The laying of the communication cable up to the branch pipe and the sheath pipe through which the communication cable is inserted is not particularly limited.
[0028]
The communication cable laid up to the branch pipes 8 and 9 in this way and the sheath pipe into which the communication cable is inserted are fixed in the branch pipes 8 and 9 by a fixing member described later, and the communication cable 18 is desired to be installed. You can route the communication cable to the termination box of each house you do.
[0029]
The communication cable 18 has a stainless steel tube as a tension material inside, a four-core optical fiber is passed through the stainless steel tube, and a cable having a thickness of about 5 mm whose outer surface is coated with polyethylene resin. In this embodiment, it can be used suitably. The communication cable 18 can be a two-core type or other types in addition to the four-core type.
[0030]
In addition, the sheath tube 16 into which the communication cable 18 is inserted is preferably used in the present embodiment, but has a stainless steel spiral shape, but is not particularly limited, and a tube or spiral made of other materials. Even those that are not shaped can be selected depending on the type of underground conduit.
[0031]
As described above, the communication cable 18 laid on the branch pipe rods 8 and 9 and the sheath pipe 16 through which the communication cable 18 is inserted are fixed by the fixing member 50 shown in FIG.
[0032]
FIG. 4 is a basic configuration diagram showing the configuration of the fixing member. In FIG. 4, the fixing member main body 11 is equal to the inner surface shape of the branch pipe rods 8 and 9. Has an outer shape Or It can be deformed so that the outer periphery expands, and when the outer periphery expands, its outer shape To be equal to the inner surface shape of branch pipe rods 8 and 9 It is configured. The fixing member body 11 is In addition, at least one part 11A is provided in the circumferential direction. Although the fixing member main body 11 shows an example having one divided portion 11A in this embodiment, even if it has two or more divided portions, the wedge pieces corresponding to the number of divided portions As long as the fixing member can be formed, the number of divided portions is not limited.
[0033]
Further, the wedge pieces 12 can be fitted into the dividing portions 11A of the fixing member main body 11, and the same number of wedge pieces 12 as the number of the dividing portions 11A of the fixing member main body 11 are required. In addition, by providing two or more dividing portions 11A, it can be applied to the case where the shape of the branch pipe rods 8 and 9 is a square shape.
[0034]
As the material of the fixing member main body 11 and the wedge piece 12, a molded product formed of a metal such as stainless steel, a hard plastic such as PE, PP, or PVC, an engineering plastic, or FRP can be used. Particularly suitable are molded products made of hard plastic such as PE, PP, PVC, etc., which have good workability and are light and inexpensive.
[0035]
A taper surface 24A that is inclined with respect to the axial direction is formed on the dividing portion 11A of the fixing member main body 11 described above, and a tapered edge 24B that fits the taper surface 24A is formed on the wedge piece 12. . FIG. 4 illustrates a state in which the tapered surface 24A tapers downward (corresponding to the lower side of the branch pipe ridge).
[0036]
Further, the fastener 13 shown in FIG. 4 is a saddle-like one and is fixed to the wedge piece 12 with a screw 13B via a washer 13A, and a sheath tube 16 through which a communication cable 18 is inserted is formed so as to be freely fitted. . The fastener 13 may be a fastener 13 that is fixed to the inner surface of the fixing member main body 11 with a screw 13B via a washer 13A and into which the sheath tube 16 into which the communication cable 18 is inserted can be loosely fitted.
[0037]
Moreover, the fastener 13 should just be formed in the inner surface of the fixing member main body 11 or the wedge piece 12, and what can fix the sheath tube 16 itself in which the communication cable 18 or the communication cable 18 was penetrated can also be used. There is no particular limitation.
[0038]
In this way, the fastener is formed on the fixing member main body 11 or the wedge piece 12, and the sheath pipe 16 through which the communication cable 18 is inserted is fixed, thereby directly attaching the fastener 13 in the branch pipe rods 8 and 9. The communication cable 18 and the sheath tube 16 through which the communication cable 18 is inserted can be easily fixed even if the branch pipe rods 8 and 9 are small ones that are difficult to work.
[0039]
Further, the fastening material 15 shown in FIG. 4 is a hollow tube, the sheath tube 16 through which the communication cable 18 is inserted is inserted into the hollow tube, and the communication cable 18 is screwed by the screw portion 15B formed in the fastening material 15 with the screw 15A. The sheath tube 16 through which is inserted can be fixed.
[0040]
Further, when the sheath tube 16 through which the communication cable 18 is inserted is fixed by the tightening material 15, the sheath tube 16 through which the communication cable 18 is inserted is fixed to the fixing member main body 11 or the wedge piece 12 so as to be freely fitable. The communication cable 18 is inserted by the screw 15A through the screw 15B formed in the tightening material 15 through the washer 19A, the urging means 14 (spring, etc.) and the washer 19B. The formed sheath tube 16 can also be fixed.
[0041]
Further, a tapered inclined surface 25A is formed on the tapered surface 24A of the fixing member main body 11 shown in FIG. 5 from the outer surface toward the inner surface, and the inclined edge 25B matching the inclined surface 25A is formed on the tapered edge 24B of the wedge piece 12. By forming it, there is no possibility that the wedge piece 12 falls off inside the branch pipe rods 8 and 9. In addition, by forming the support piece 21A as shown in FIG. 6 in the divided portion 21B of the fixing member main body 21, the same effect can be obtained.
[0042]
Further, the tapered inclined surface 25A described above is formed by a notch in which the outer surface on the notch side is longer than the inner surface. This inclined surface 25A corresponds to the dividing portion 11A of the fixing member main body 11 and corresponds to the inclined surface 25A tapered from the outer surface to the inner surface of the tapered surface 24A inclined with respect to the axial direction. The tapered edge 24B of the wedge piece 12 adapted to the tapered surface 24A of 11A has an inclination adapted to the inclined surface 25A is defined as an inclined edge 25B.
[0043]
FIG. 7 shows an example of a distal end processing structure of a sheath tube through which a communication cable is inserted. A terminal device 20 through which the communication cable 18 can pass is provided at the end of the sheath tube 16 through which the communication cable 18 is inserted. The communication cable 18 is attached to the end of the sheath tube 16 through which the communication cable 18 is inserted. The terminal device 20 is a hollow tube, and a step 20D is provided on the inner surface so as to match the step between the end of the sheath tube 16 through which the communication cable 18 is inserted and the communication cable 18. When the terminal device 20 is attached to the end of the sheath tube 16 through which the communication cable 18 is inserted, the gap between the communication cable 18 and the terminal device 20 is sealed with a clay-like airtight agent 20B, for example, epoxy mortar, etc. Water or insects are prevented from entering the sheath tube 16 through which the cable 18 is inserted.
[0044]
Further, the gap between the sheath tube 16 through which the communication cable 18 is inserted and the terminal device 20 is sealed with a clay-like airtight agent or the like, so that water, insects, etc. are further contained in the sheath tube 16 through which the communication cable 18 is inserted. Can be prevented from entering. When the sheath tube 16 through which the communication cable 18 is inserted has a spiral shape as shown in FIG. 7, use a screw thread 20 </ b> C that fits in the spiral groove inside the terminal device 20. It is preferable to fix together with screw 20A.
[0045]
The sheath pipe 16 into which the communication cable 18 is inserted can be fixed in the branch pipe cages 8 and 9 by the fixing member 50 configured as described above.
[0046]
FIG. 8 shows a basic structure diagram of the structure for fixing the communication cable in the branch pipe. In FIG. 8, the branch pipe to which the branch pipes 4 and 5, the drain pipe 10 and the rising pipe 17 to the ground are connected. The fixing member 50 located in the rising pipes 17 and 8 is held and fixed in a tensioned state to the sheath pipe 16 through which the communication cable 18 laid in the branch pipes 4 and 5 is inserted. Can do.
[0047]
As shown in FIG. 8, when the sheath pipe 16 through which the communication cable 18 is inserted is installed in the upper part of the branch pipes 4 and 5, the inner surface of the wedge piece 12 that fits into the dividing portion 11 </ b> A of the fixing member main body 11. A fastener 13 capable of loosely fitting the sheath tube 16 through which the communication cable 18 is inserted is formed, and an urging means 14 such as a spring is disposed above the fastener 13 so that the urging means 14 is compressed. Attach the fastening material 15 held by the cable to the sheath tube 16 through which the communication cable 18 is inserted, thereby generating tension in the sheath tube 16 through which the communication cable 18 is inserted, and the sheath tube 16 through which the communication cable 18 is inserted into the branch tube 4 and 5 can be installed on top.
[0048]
Moreover, as an example of the embodiment, a fastener 13 is formed on the inner surface of the fixing member main body 11 so that the sheath tube 16 into which the communication cable 18 is inserted can be loosely fitted. The urging means 14 is arranged, and the fastening material 15 that holds the urging means 14 in a compressed state is attached to the sheath pipe 16 through which the communication cable 18 is inserted, so that the sheath pipe 16 through which the communication cable 18 is similarly inserted is attached. Can be installed in the upper part of the branch pipes 4 and 5.
[0049]
Furthermore, the sheath tube 16 through which the communication cable 18 is inserted may be fixed by forming a fastener 13 for fixing the sheath tube 16 through which the communication cable 18 is inserted on the inner surface of the fixing member main body 11 or the wedge piece 12. Is possible. Depending on the shape of branch pipe rods 8 and 9, riser pipe 17 may not be required. External shape Is equal to the inner surface shape of the branch pipe rods 8 and 9, or It can be deformed so that the outer periphery expands, and when the outer periphery expands, its outer shape To be equal to the inner surface shape of branch pipe rods 8 and 9 Composed The fixing member main body 11 having at least one dividing portion 11A in the circumferential direction and the wedge piece 12 fitted to the dividing portion 11A of the fixing member main body 11 are applicable.
[0050]
When the sheath tube 16 through which the communication cable 18 is inserted is fixed in a state where tension is generated, a tapered surface 24A inclined with respect to the axial direction is formed on the dividing portion 11A of the fixing member main body 11. The wedge piece 12 is formed with a taper edge 24B that fits the taper surface 24A. When the taper surface 24A is tapered toward the lower side of the branch pipe rods 8 and 9, the wedge piece 12 communicates with the inner surface of the fixing member main body 11. A fastener 13 that can be loosely fitted to the sheath tube 16 through which the cable 18 is inserted is formed, and an urging means 14 such as a spring is disposed on the upper portion of the fastener 13 so that the fixing member main body 11 is attached. The force of moving the lower side of the branch pipe rods 8 and 9 by the compression of the biasing means 14 works, the fitting force with the wedge piece 12 is increased, and the fixed state is further increased, which is preferable.
[0051]
And the taper surface 24A of the fixing member main body 11 bites into the taper edge 24B of the wedge piece 12, so that the outer periphery of the fixing member main body 11 spreads, and the outer surface of the fixing member main body 11 and the wedge piece 12 and the branch pipe rods 8 and 9 When the inner surface or the rising pipe 17 is formed on the branch pipe rods 8 and 9, the frictional force with the inner surface of the rising pipe 17 is increased, and the fixing and holding force of the fixing member main body 11 and the wedge piece 12 is further increased.
[0052]
In addition, by forming the fastener 13 that fixes the sheath tube 16 through which the communication cable 18 is inserted on the inner surface of the fixing member body 11, the fixing member body 11 is branched by the sheath tube 16 through which the communication cable 18 is inserted. Since the force which moves to the lower side of the eaves 8 and 9 works, the fitting force with the wedge piece 12 increases, and the fixed state is further increased, which is preferable.
[0053]
When the taper surface 24A is tapered toward the lower side of the branch pipe rods 8 and 9, the fastener 13 is formed on the inner surface of the wedge piece 12 so that the sheath pipe 16 into which the communication cable 18 is inserted can be loosely fitted. By placing the biasing means 14 such as a spring on the upper portion of the fastener 13, the wedge piece 12 has a force to move to the lower side of the branch pipe rods 8 and 9 by the compression of the biasing means 14. This is preferable because the fitting force with the fixing member main body 11 increases and the fixed state increases.
[0054]
And the taper edge 24B of the wedge piece 12 bites into the taper surface 24A of the fixing member main body 11, so that the outer periphery of the fixing member main body 11 spreads, and the outer surfaces of the fixing member main body 11 and the wedge piece 12 and the branch pipe rods 8 and 9 When the inner surface or the rising pipe 17 is formed on the branch pipe rods 8 and 9, the frictional force with the inner surface of the rising pipe 17 is increased, and the fixing and holding force of the fixing member main body 11 and the wedge piece 12 is further increased.
[0055]
Further, by forming the fastener 13 for fixing the sheath pipe 16 through which the communication cable 18 is inserted on the inner surface of the wedge piece 12, the wedge piece 12 is connected to the branch pipe rod 8 by the sheath pipe 16 through which the communication cable 18 is inserted. 9 is preferable because a force to move downward is exerted, the fitting force with the fixing member main body 11 is increased, and the fixing state is further increased.
[0056]
FIG. 9 shows an example in which the communication cable 18 fixed to the branch pipes 8 and 9 is led to each house. The branch pipes 8 and 9 include communication pipes different from the drainage path. 27 is connected, and the communication pipe 27 is connected to an underground box 28 which is a communication dedicated cage formed near the outer wall. A normal tube type is applied to the communication tube 27, and a smaller normal bag is used for the underground box 28. The communication cable 18 passes through the underground box 28 and is connected to the home LAN cable by a termination box 26 provided on the outer wall. In addition, when the communication cable 18 is led to the vicinity of the outer wall with only the L-shaped communication pipe without forming the underground box 28, or when excavation work for installing such a communication pipe is impossible, There are various methods, such as building a pole near the branch pipes 8 and 9 and pulling up the communication cable 18 to the ground and then guiding it to the termination box 26 or connecting it to a home receiver wirelessly. Can be mentioned. The material and shape of the underground box 28 are not particularly limited.
[0057]
By using the communication cable 18 or the fixing method of the sheath tube 16 through which the communication cable 18 is inserted as described above, the communication cable 18 or the sheath tube 16 can be easily connected to the branch pipe rods 8 and 9 of each house where the communication cable 18 is laid. It can be fixed in a state where it is fixed and tension is maintained, and the communication cable 18 or the sheath pipe 16 is laid on the upper side of the main pipe 1 and the branch pipes 4 and 5, so that the inside of the main pipe 1 and the branch pipe The flow of sewage and the like in 4, 5 can be prevented from being obstructed.
[0058]
【The invention's effect】
As described above, the present invention can be held and fixed in a state where tension is applied to a communication cable or a sheath pipe through which the communication cable is inserted in the branch pipe rod. In addition, there is an effect that the communication cable or the sheath tube through which the communication cable is inserted can be easily fixed even if the work is small and difficult to work in the branch pipe rod.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of an outline of an underground conduit.
FIG. 2 is a cross-sectional view showing an arrangement state of branch pipes.
FIG. 3 is a diagram showing the situation of each culvert as an example of sewerage.
FIG. 4 is a basic configuration diagram of an embodiment showing a configuration of a fixing member according to the present invention.
FIG. 5 is a top view of an embodiment of a fixing member main body and a wedge piece according to the present invention.
FIG. 6 is a perspective view showing a fixing member according to another embodiment of the present invention.
FIG. 7 is a basic configuration diagram of an embodiment showing a distal end portion processing configuration of a sheath tube through which a communication cable according to the present invention is inserted.
FIG. 8 is a basic structural view of an embodiment showing a fixing structure of a sheath pipe through which a communication cable is inserted in a branch pipe rod according to the present invention.
FIG. 9 is a schematic view showing an example of a state of laying communication cables in each house according to the present invention.
FIG. 10 is a schematic diagram showing an example of a conventional communication cable fixing state.
[Explanation of symbols]
4,5 branch pipe
8,9 Branch pipe
10 Drain pipe
11 Fixed member body
11A Dividing part
12 wedges
13 Fastener
14 Biasing means (spring)
15 Fastening material
16 sheath tube
17 Rise pipe
18 Communication cable
24A Tapered surface
24B inclined surface
25A taper edge
25B inclined edge
50 Fixing member

Claims (11)

Hold the communication cable laid from the main pipe or the sheath pipe through which the communication cable is inserted inside the branch pipe rod located at the end of the branch pipe of the underground pipe where the branch pipe branches into the main pipe A fixing member that can be fixed,
It has an outer surface shape equal to the inner surface shape of the branch pipe rod , and can be deformed so that the outer periphery is widened, and when the outer periphery is widened, the outer surface shape becomes equal to the inner surface shape of the branch pipe rod. A fixing member body that satisfies any one of the above and has at least one divided portion in the circumferential direction;
A wedge piece that fits into the dividing portion of the fixing member body;
The fixing member in the branch pipe rod comprised by the fastener which fixes the communication tube currently formed in the inner surface of the said fixing member main body or the said wedge piece, or the sheath pipe | tube through which the communication cable was penetrated. Holding and fixing the sheath pipe through which the communication cable laid from the main pipe is inserted inside the branch pipe rod located at the end of the branch pipe of the underground pipe branching into the main pipe A fixing member capable of
It has an outer surface shape equal to the inner surface shape of the branch pipe rod , and can be deformed so that the outer periphery is widened, and when the outer periphery is widened, the outer surface shape becomes equal to the inner surface shape of the branch pipe rod. A fixing member body that satisfies any one of the above and has at least one divided portion in the circumferential direction;
A wedge piece that fits into the dividing portion of the fixing member body;
A fastener and a biasing means for loosely fitting a sheath tube through which a communication cable formed on the inner surface of the fixing member main body or the wedge piece is inserted;
The sheath tube is fixed in a sheath tube through which the communication cable is inserted and is biased toward the direction away from the main tube by sandwiching the biasing means with the fastener. The fixing member in the branch pipe rod comprised with the fastening material which hold | maintains.   The fixing member in the branch pipe rod according to claim 2, wherein the fastening material is formed of a hollow tube and is locked to the sheath tube inserted through the hollow tube.   The tapered portion of the fixing member main body is formed with a tapered surface inclined with respect to the axial direction thereof, and the wedge piece is formed with a tapered edge that fits the tapered surface. The fixing member in the branch pipe rod of any one of -3. A fastener is formed on the wedge piece,
The tapered edge is formed so that the wedge piece tapers in a direction opposite to a direction away from the main pipe,
The fixing member in the branch pipe rod according to claim 4, wherein the tapered surface is formed so as to match the tapered edge. The tapered edge is formed with an inclined edge that is inclined so that the cross-sectional shape of the wedge piece along the direction orthogonal to the axial direction tapers from the outer surface to the inner surface of the fixing member main body,
The branched pipe rod according to claim 4 or 5, wherein an inclined surface inclined from an outer surface to an inner surface of the fixing member main body is formed on the tapered surface so as to match the tapered edge. Inside fixing member. Hold the communication cable laid from the main pipe or the sheath pipe through which the communication cable is inserted inside the branch pipe rod located at the end of the branch pipe of the underground pipe where the branch pipe branches into the main pipe A communication cable fixing method using a fixing member that can be fixed,
It has an outer surface shape equal to the inner surface shape of the branch pipe rod , and can be deformed so that the outer periphery is widened, and when the outer periphery is widened, the outer surface shape becomes equal to the inner surface shape of the branch pipe rod. The fixing member main body or the wedge is fitted to and attached to the divided portion of the fixing member main body satisfying any one of the above and having at least one divided portion in the circumferential direction. A communication cable fixing method in a branch pipe cage, wherein the communication cable or a sheath tube through which the communication cable is inserted is fixed by a fastener formed on an inner surface of the piece. Holding and fixing the sheath pipe through which the communication cable laid from the main pipe is inserted inside the branch pipe rod located at the end of the branch pipe of the underground pipe branching into the main pipe A communication cable fixing method using a fixing member capable of
It has an outer surface shape equal to the inner surface shape of the branch pipe rod , and can be deformed so that the outer periphery is widened, and when the outer periphery is widened, the outer surface shape becomes equal to the inner surface shape of the branch pipe rod. The fixing member main body or the wedge is fitted to and attached to the divided portion of the fixing member main body satisfying any one of the above and having at least one divided portion in the circumferential direction. The sheath tube through which the communication cable was inserted was loosely fitted to the fastener formed on the inner surface of the piece and the urging means located at the upper portion of the fastener, and attached to the sheath tube through which the communication cable was inserted. The communication cable is inserted by compressing the urging means between the fastener and the sheath tube through which the communication cable is inserted and applying an urging force in a direction away from the main tube by a fastening material. Split the sheath tube Communication cable fixing method of the branch pipe 桝内, characterized in that to hold the top of the tube.   A taper edge is formed on the wedge piece so as to taper in a direction away from the main pipe, and a taper surface adapted to the taper edge is formed on the dividing surface of the fixing member. The method of fixing a communication cable in a branch pipe rod according to claim 7 or 8, wherein the fastener is formed on a fixing member main body.   A taper edge is formed on the wedge piece so as to taper in a direction opposite to a direction away from the main pipe, and a taper surface adapted to the taper edge is formed on the divided surface of the fixing member. 9. The method of fixing a communication cable in a branch pipe rod according to claim 7 or 8, wherein a fastener is formed on the wedge piece.   The tapered edge is formed with an inclined edge that is inclined so that the cross-sectional shape of the wedge piece along the direction orthogonal to the axial direction tapers from the outer surface to the inner surface of the fixing member body, The tapered surface is formed with an inclined surface that is inclined from the outer surface to the inner surface of the fixing member main body so as to match the tapered edge, and the wedge piece is fitted to the fixing member main body. The communication cable fixing method in the branch pipe rod according to claim 9 or 10.

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