JP4460563B2 - Housing land piping system - Google Patents

Description

This invention relates to residential plumbing systems using house Chi桝to draw from the underground facilities underground cables, etc., to land in the house or the like.

  Conventionally, city planning without a utility pole has been promoted in consideration of road scenery and disaster prevention. As a method of eliminating the utility pole, there is a method of drawing communication, power cables, etc. from the basement into a residential land such as a house or a company. In this case, pipes and connection boxes that accommodate trunk cables for communication, power, etc. are installed on public roads, etc., and are piped to each residential land by a common lead-in pipe adopting a shared FA system or a single lead-in pipe Is the current situation. Details of the shared FA method are described in Patent Document 1 and the like.

FIG. 1 is a cross-sectional view showing that a wiring pipe 6 in a case where a building is not yet constructed is buried in the ground as a leading pipe.
In the shared FA system, cables 4 of a plurality of business companies are accommodated in the shared FA pipe 2. If each residential land is in the process of construction or is planned to be constructed, the service entrance cannot be established because the cable entrance to each building passing through the common FA pipe 2 is not fixed. Therefore, the wiring pipe 6 that guides the cable 4 to the residential land is used as a leading pipe, and is fastened to the ground, and a water stopcock 8 is attached for waterproofing. When the residential land is created, the vicinity of the wiring pipe 6 is dug up, the wiring pipe 6 is extended to the constructed residential land, the cable 4 is guided to the residential land, and pulled into the building entrance (not shown).

FIG. 2 is a cross-sectional view showing that the cable 4 is routed from the common FA pipe 2 using the wire fitting 20 when a building is constructed. FIG. 3 is a cross-sectional view showing that the cable 4 from the common FA pipe 2 is drawn into the service entrance 12 of the constructed building. As shown in FIG. 2, when the building is already completed, the entrance 12 is provided in the building wall surface 10. A wiring pipe 6 for guiding the cable 4 is attached to the common FA pipe 2, and an end 15 of the wiring pipe 6 is extended to the vicinity of the inlet 12. Further, a waterproof plug 16 described in Patent Document 2 is attached to the end 15 so that rainwater or the like does not enter the wiring pipe 6.
At the time of the line work, for example, 16a which is one of the plurality of waterproof caps (16a, 16b,...) Provided in the waterproof plug 16 is cut off, and the line opening 17 is formed. Provided (see FIG. 3). And the wiring tool 20 shown in patent document 3 is inserted from the wiring opening part 17. FIG. The wire connecting tool 20 is pushed forward to one of the connection boxes (not shown) installed at both ends of the common FA pipe 2 in the longitudinal direction. In this connection box, the cable 4 is attached to the tip end of the wiring tool 20, and the wiring tool 20 is pulled.

In this way, as shown in FIG. 3, the cable 4 is passed through and the cable 4 is drawn into the lead-in port 12. The details of the wiring work by the wiring tool 20 are described in Patent Document 3.
Next, we explain the common line processing when a single company company cable (hereinafter referred to as a dedicated cable) passes through a dedicated pipe buried in the ground and the building is incomplete. To do. Usually, a housing lot is used to separate the work of connecting a dedicated cable between the business company side and the housing land side. A residential land is a small room that facilitates line work and the like.

  FIG. 4 shows a cross-sectional view in which the extra length processing of the dedicated cable 22 is performed using the housing lot 26. As shown in FIG. 4, the housing lot 26 is embedded in the ground within the site of the housing lot, and the housing lot 26 has a peripheral portion 23. The top surface 25 of the housing lot 26 is closed by the lid portion 28, and the bottom surface of the housing lot 26 is closed by the bottom portion 29. The dedicated cable 22 is wound in the housing lot 26 and subjected to extra length processing. In addition, in order to prevent rainwater or the like from entering the conduit 24, the pull-in opening 27 is blocked by the stop cock 30. The operating company will do the work so far in advance. Since the work up to this point is the construction of the equipment of a single business company, it is not necessary to use the wire tool shown in Patent Document 3, and it may be performed by a method unique to each business company.

Next, as shown in FIG. 5, when the building is completed, a pull-out opening 34 for pulling out the dedicated cable 22 is formed in the peripheral portion 23. In addition, a lead-in pipe 36 that guides the dedicated cable 22 is formed from the drawer opening 34 to the entrance 12 of the residential land. The dedicated cable 22 is drawn into the drawing port 12 by the drawing pipe 36. By providing the housing lot in this way, the construction timing on the business company side and the construction timing on the residential land side can be separated, so that the degree of freedom of construction is increased.
Japanese Patent Laying-Open No. 2005-261079 JP 2006-34074 A JP 2005-223972 A

  Even in the case of the shared FA method, there is a request to use a residential land wall, but there are the following problems. (1) It is necessary to simplify the wiring work using the wiring tool shown in Patent Document 3. (2) It is necessary to have an earthquake-resistant structure at a low cost against large external forces such as earthquakes. (3) The depth (position) of the wiring pipe (from the common FA pipe to the residential land wall) varies from place to place due to the convenience of peripheral equipment, etc., but it is necessary to be able to deal with any depth at a low cost. is there. (4) As shown in FIG. 4, when a cable is wound and accommodated in a housing lot, a radius of a circle 38 formed by the cable (hereinafter referred to as an allowable radius of curvature) can be secured, and extra length processing is performed. It is necessary to make it easier. (5) It is necessary to drain rainwater collected in residential land at low cost. (6) It is necessary that the waterproof plug 16 shown in Patent Document 2 can be used.

According to this invention, it is provided with a wiring pipe for guiding a cable, a residential land wall to which the wiring pipe is connected, and a basic crushed stone laid under the residential land wall, and the residential land wall has a drawer opening. A cylindrical peripheral portion, a bottom portion that closes the bottom of the peripheral portion and has a pull-in opening, and a lid that closes the opening of the peripheral portion on the opposite side of the bottom, the inner side of the peripheral portion is is a housing portion for housing the cable, one end of the raceway, the allowable radius of curvature can be secured when the cable has been removed from the one end is wound in the vertical plane at the housing part, the bottom surface at an angle of between 70 degrees pairs to 60 ° section has been drawn into the housing portion from said lead-opening, the basic crushed stone, at least, have been laid in the position of the retraction opening, the drawer opening, the housing part The contained cable is an opening for drawing out the above land桝外side, to the one end of the conduit, are residential plumbing systems waterproof plug is mounted.
Also, the retraction opening may be a residential plumbing system provided in a position away from the center of the bottom portion.
In the residential land piping system, the wiring pipe has at least a curved pipe part or a straight pipe part connected to the curved pipe part, and the one end of the wiring pipe is one end of the curved pipe part or one end of the straight pipe part. Good.
In addition, the diameter of the drawing opening through which the wiring pipe is passed is larger than the diameter of the wiring pipe, and the area between the wiring pipe and the drawing opening draws the water in the housing part from the housing land. A residential land piping system may be used as a drainage section that drains to the outside.
Moreover, the residential land piping system in which the said wiring pipe has a horizontal pipe part which connects the said curved pipe part and a common pipe may be sufficient.

  With the above configuration, since the direction in which the line tool is inserted into the housing lot and the direction in which the line tool is inserted into the conduit are substantially in a straight line, the line work becomes very simple. (1) Can solve the problem. Also, if the diameter of the lead-in opening is larger than the outer diameter of the conduit and the conduit and the lead-in opening are not fixed, the conduit can move freely to some extent, so it has excellent earthquake resistance structure. Therefore, the problem (2) can be solved. If you have a straight pipe part in the conduit, you can change the depth of the conduit by changing only the length of the straight pipe, so you can change the depth of the conduit at a low cost, The problem (3) can be solved. Moreover, since the cable lead-in opening is in the bottom surface, an allowable radius of curvature can be secured, and the problem (4) can be solved. When the diameter of the lead-in opening is larger than the outer diameter of the wiring pipe, rainwater and the like accumulated in the housing lot can be drained from the lead-in opening at a low cost, so the problem (5) can be solved. Since the conduit is drawn into the housing lot, the problem (6) can be solved.

  First, it is shown that the problem cannot be solved by diverting the conventional residential land to the shared FA system. FIG. 6 shows an example in which a conventional housing lot is used for the shared FA system. In the housing lot 40, a pull-in opening 41 for pulling the cable is provided in the peripheral portion 42. A waterproof plug 16 is attached to the pull-in opening 41. The cable 4 is drawn into the housing lot 40 from the drawing opening 41 through the waterproof plug 16.

  At the time of wiring work with a wiring tool (not shown), the lid 44 is removed, the wiring tool is inserted from the upper surface 46 of the housing lot, and the wiring tool that has entered the housing lot 40 is wired from the lead-in opening 41. Insert into tube 48. However, since the direction in which the line tool is inserted into the housing lot 40 is substantially perpendicular to the direction in which the line tool is inserted into the conduit 48, the line work is very difficult. If the waterproof plug 16 is attached to the pull-in opening 41, the operation becomes more difficult. Further, the duct sleeve 49 can be attached because of the seismic structure, but the attachment cost of the duct sleeve 49 is required.

  FIG. 7A is a cross-sectional view showing that the wiring pipe 48 is located at a1 (depth) from the ground surface and the height of the housing lot 40 is h1, and FIG. 7B is a cross-sectional view of the wiring pipe 48 a2 from the ground surface. It is sectional drawing which is in a position (depth) and shows that the height of a housing lot is h2. As shown in FIG. 7A, if the conduit 48 is at the position a1 from the ground surface, the housing lot 40 having a height h1 is required. However, the depth of the wiring pipe 48 differs depending on the place where the wiring pipe 48 is embedded. If the wiring pipe 48 is located at a2 from the ground surface, a housing lot 40 'having a height h2 is required. Therefore, since many types of housing lots must be prepared for each depth of the wiring pipe 48, it is difficult to obtain a mass production effect and cost is increased.

  Further, when the waterproof plug 16 is attached to the lead-in opening 41 even when the cable is wound and accommodated in the housing lot 40, it is difficult to secure the allowable curvature radius of the cable. In addition, in order to drain rainwater and the like accumulated in the housing lot 40, it is necessary to provide a drainage port in the bottom surface portion 45, which increases costs. Thus, conventional residential land cannot be used for the shared FA system.

  FIG. 8 is a perspective view of the housing lot 50 according to the first embodiment of the present invention. The same parts as those in the above-mentioned drawings are denoted by the same reference numerals, duplicate description is omitted, and the same applies to the following. The housing lot 50 accommodates the cable 4 in the peripheral edge 52, a bottom face 54 that closes the bottom of the peripheral edge, a lid 55 that closes the surface opposite to the bottom of the peripheral edge 52, and the peripheral edge 52. The bottom surface 54 has a lead-in opening 56 for pulling in the wiring tube that guides the cable 4, and the peripheral edge 52 is a lead-out opening for pulling out the retracted housing cable. 58. Further, the peripheral edge portion 52 and the bottom surface portion 54 are joined.

  The shape of the housing lot 50 in FIG. 8 is a shape in which the diameter increases from the bottom surface portion 54 toward the lid portion 55, but is cylindrical, triangular, rectangular parallelepiped, or from the bottom surface portion 54 to the lid portion 55. A shape with a narrower diameter may be used.

A residential land piping system using the residential land fence 50 is shown in FIG. A wiring pipe 62 for guiding the cable 4 passing through the shared FA pipe to the housing lot 50, a water distribution layer 60 formed under the housing lot 50, and a waterproof plug 16 attached to an end 62a of the wiring pipe 62; The wiring pipe 62 has at least a curved pipe part 622 for directing the longitudinal direction of the wiring pipe 62 in the direction of the pipe in which the cable 4 is accommodated, and a horizontal connecting the pipe in which the cable 4 is accommodated and the curved pipe part 622. A tube portion 624. Thus, since the wiring pipe 62 is drawn into the housing lot 50, the waterproof plug 16 can be attached, and the above problem (6) can be solved.
In addition, the wiring pipe 62 may also have a straight pipe portion 626 that connects the housing lot 50 and the curved pipe portion 622, and one end of the straight pipe portion 626 may be drawn into the housing lot 50. The merit of providing the straight pipe portion 626 will be described below.

FIG. 10A is a cross-sectional view showing that the wiring pipe 62 is at a position (depth) a3 from the ground surface, and the height of the housing lot 50 is h3, and FIG. 10B is the wiring pipe 62 a4 from the ground surface. It is sectional drawing which is in a position (depth) and shows that the height of the housing lot 50 is h3.
As shown in FIG. 10A, if the wiring pipe 62 is at a3 position from the ground surface, the housing lot 50 having a height of h3 is required. Even when the wiring pipe 62 is at the position a4 from the ground surface, the straight pipe portion 626 ′ longer than the straight pipe portion 626 may be used without changing the housing lot 50. Therefore, even if the depth where the wiring pipe 48 is located changes, a single residential land 50 can be used. That is, the cost can be suppressed by the mass production effect, and the above problem (3) can be solved. In addition, although the short straight pipe part 626 is shown by FIG. 10A, the curved pipe part 622 may be drawn in the housing lot 50 without providing the straight pipe part 626.

Next, the wiring work by the wiring tool 20 will be described with reference to FIG. First, after opening the lid portion 55 shown in FIG. 9, the wire tool 20 is inserted into the housing lot 50 through the opening 61. The waterproof cap of the waterproof plug 16 corresponding to the cable 4 to be connected from the common FA pipe 2 is removed, and a line opening 17 is provided. The wire tool 20 is inserted from the wire opening 17 and pushed to a connection box (not shown). Within the connection box, the cable 4 is attached to the tip of the wire 20 and the wire is pulled back. In this way, the cable connection from the common FA pipe 2 to the housing lot 50 is completed.
Here, the direction in which the line tool 20 is inserted into the housing lot 50 from the opening 61 and the direction in which the line tool 20 is inserted into the line opening 17 (wiring pipe 62) are substantially in a straight line. Therefore, even when the waterproof plug 16 is present, it is very easy to perform the line work by the line tool 20. Therefore, said subject (1) is solved.

  As shown in FIG. 12, the cable 4 is routed by the wire 20, passes through the wiring pipe 62, and is accommodated in the accommodating portion 59. When the cable 4 is accommodated, a circle 70 is usually formed by winding the cable 4. Here, since the cable 4 is guided into the housing lot 50 from the bottom surface of the housing lot 50, even if the waterproof plug 16 is provided, it is easy to make a circle 70, an allowable radius of curvature can be secured, and extra length processing is performed. This makes it possible to solve the problem (4). Thus, the extra length processing can be easily performed by using the housing lot 50 of the first embodiment.

In FIG. 12, an angle formed between the curved pipe portion 622 or the straight pipe portion 626 (the straight pipe portion 626 in FIG. 12) and the bottom face portion 54 is defined as θ. If the value of θ is between 60 degrees and 70 degrees, it is easier to secure the allowable radius of curvature. Further, as shown in FIG. 13, even when the horizontal pipe portion 624 is inclined, it is possible to prevent θ from becoming 90 degrees or more. Therefore, the angle of the curved pipe portion 622 may be changed from 60 degrees to 70 degrees.
When the building is constructed, as shown in FIG. 14, the drawer opening 58 and the drawer wiring pipe 72 are joined, and the cable 4 is drawn from the drawer wiring pipe 72 toward the building. Then, the cable 4 is guided into the building from a housing land entrance not shown.

FIG. 15 shows a cross-sectional view of the housing lot 50 cut in parallel with the bottom surface portion 54 when the diameter of the lead-in opening 56 is larger than the outer diameter of the wiring tube 62. In this case, the conduit free area S shown in FIG. 15 is formed.
When the wiring tube 62 and the drawing opening 56 are not fixed, the wiring tube 62 can move freely within the wiring tube free region S. Therefore, even if a large external force such as an earthquake is applied, the external force is relieved by the conduit free region S, and the conduit 62 and the like are not likely to be damaged and have an excellent earthquake-resistant structure.

  Moreover, since the wiring pipe 62 and the lead-in opening 56 are not fixed, an effect excellent in the earthquake-resistant structure can be obtained while suppressing the cost, and the above problem (2) can be solved. Depending on the outer diameter of the wiring tube 62, it is necessary to determine the diameter of the lead-in opening 56 so as to be larger than the outer diameter of the wiring tube 62.

The conduit free area S also functions as a drainage section 76 that drains rainwater and the like accumulated in the housing lot 50. Regardless of whether or not the wiring pipe 62 and the lead-in opening 56 are fixed, the drainage portion 76 can drain rainwater or the like accumulated in the housing lot 50. With this configuration, the above problem (5) can be solved.
In addition, in the water distribution layer 60 shown in FIG. 9, if the first water distribution layer 602 is a mortar and the second water distribution layer 604 is a basic crushed stone, rainwater and the like drained from the residential land 50 can be distributed efficiently. .
As a modification of this embodiment, as shown in FIG. 16, the drawing opening 56 is provided at the center R of the bottom surface portion 54, but by providing the drawing opening 56 at a position away from the center R, It becomes easier to secure the allowable radius of curvature. In particular, as shown in FIGS. 12 and 13, it is preferable to combine with the curved pipe portion 622 in which the θ is 60 degrees to 70 degrees.

Next, the construction procedure of the housing lot 50 of the present invention will be described using FIG.
First, the soil is dug up to the extent that the wiring tube 62 can be embedded, and the horizontal tube portion 624, the curved tube portion 622, and the straight tube portion 626 are joined in the soil to form the wiring tube 62. The wiring pipe 62 is joined to a common FA pipe (not shown). FIG. 17A is a cross-sectional view of the wiring tube 62 embedded in the site 80 cut from the ground surface and viewed from directly above. FIG. 17B is a cross-sectional view of the buried wiring pipe 62 cut from the ground surface and viewed from the side. As shown in FIG. 17B, the wiring pipe 62 is embedded, and a certain portion of the straight pipe portion 626 and the curved pipe portion 622 comes out to the ground surface, so that a space enough to accommodate the cable is secured and the soil is backfilled. .

  Next, as shown in FIG. 17C, the position (height) of the housing lot 50 is adjusted with the mortar of the first water distribution layer 602 and the basic crushed stone of the second water distribution layer 604. It should be noted that the first water distribution layer 602 is not laid in the vicinity of the location where the lead-in opening 56 of the housing lot 50 is located. This is because the drainage ability by the pull-in opening 56 (drainage part 76) is exhibited.

Next, as shown in FIG. 17D, the housing lot 50 is installed so that the straight pipe portion 626 is inserted into the pull-in opening 56 of the housing lot 50. Note that the curved pipe portion 622 is arranged so as not to belong to the residential land site.
As shown in FIG. 17E, the surrounding space 90 of the housing lot 50 is refilled. Next, as shown in FIG. 17F, the waterproof plug 16 is attached to the end 62 a of the wiring pipe 62 in order to prevent rainwater or the like from entering the wiring pipe 62.
Next, as shown in FIG. 17G, a lid 55 is installed on the upper side of the housing lot 50. In this way, the housing lot 50 is installed.
Further, the horizontal pipe portion 624, the curved pipe portion 622, the straight pipe portion 626, and the housing lot 50 are economical if recycled resources such as a PVC pipe or waste plastic are used.

Sectional drawing which shows that the wiring pipe 6 is buried in the ground as a leading pipe when a building is not yet constructed. Sectional drawing which shows passing the cable 4 from the common FA pipe | tube 2 using the wiring tool 20 when a building is constructed. Sectional drawing which shows drawing in the cable 4 from the common FA pipe | tube 2 to the inlet 12 of the constructed wall surface 10 of a building. Sectional drawing which performs the extra length process of the exclusive cable 22 using the housing lot 26. FIG. Sectional drawing which shows that the exclusive cable 22 is drawn in to the inlet 12 of the building wall surface 10 using the housing lot 26. FIG. Sectional drawing of the housing lot 40 which pulled in the peripheral part 42 and provided the opening part 41, when letting the cable 4 pass from the common FA pipe | tube 2. FIG. FIG. 7A is a cross-sectional view showing that the wiring pipe 48 is located at a1 (depth) from the ground surface and the height of the housing lot 40 is h1, and FIG. 7B is a cross-sectional view of the wiring pipe 48 a2 from the ground surface. It is sectional drawing which is in a position (depth) and shows that the height of a housing lot is h2. The perspective view of the housing lot 50 of Example 1 of this invention. Sectional drawing which shows the residential land piping system which uses the residential land fence 50 of Example 1 of this invention. FIG. 10A is a cross-sectional view showing that the wiring pipe 62 is at a position (depth) a3 from the ground surface, and the height of the housing lot 50 is h3, and FIG. 10B is the wiring pipe 62 a4 from the ground surface. It is sectional drawing which is in a position (depth) and shows that the height of the housing lot 50 is h3. Sectional drawing which shows letting the cable 4 pass by the wiring tool 20 in the residential land piping system of this invention. Sectional drawing which shows that the cable 4 is connected and the surplus length process is performed in the residential land piping system of this invention. Sectional drawing which shows that the angle (theta) which the straight pipe part 626 and the bottom face part 54 make can be changed easily in the residential land piping system of this invention. Sectional drawing which shows that the building is constructed in the residential land piping system of this invention, and the cable 4 is guide | induced into the building by the drawer wiring pipe 72. FIG. In the residential land piping system of this invention, when the diameter of the drawing-in opening part 56 is larger than the outer diameter of the wiring pipe 62, sectional drawing which shows the residential land fence 50 cut in parallel with the bottom face part 54. Sectional drawing at the time of providing the drawing-in opening part 56 in the place away from the center R of the bottom face part 54 in the residential land piping system of this invention. It is the figure which showed the order of installation of the residential land fence 50 of this invention, FIG. 17A is sectional drawing which cut the wiring pipe 62 embed | buried in the site | part 80 horizontally with the ground surface, and was seen from right above. 17B is a cross-sectional view of the embedded wiring pipe 62 cut perpendicularly to the ground surface and viewed from the side, and FIG. 17C is a cross-sectional view showing that the water distribution layer 60 is provided at the place where the residential land wall 50 is installed. FIG. 17D is a cross-sectional view showing that the housing lot is installed, FIG. 17E is a cross-sectional view showing that the surrounding space 90 of the housing lot 50 is backfilled, and FIG. FIG. 17G is a cross-sectional view showing that the waterproof plug 16 is attached to the part 62a, and FIG. 17G is a cross-sectional view showing that the lid part 55 is installed on the upper side of the housing lot 50.

Claims (5)

A conduit for guiding the cable;
A residential land with the above conduit connected to it,
With basic crushed stones laid under the above housing lot,
The housing lot includes a cylindrical peripheral portion having a drawer opening, a bottom portion that closes the bottom of the peripheral portion and has a pull-in opening, and a lid that closes the opening of the peripheral portion opposite to the bottom. And the inside of the peripheral part is a housing part for housing the cable,
One end of the wiring tube, the cable that has been removed from the one end can be secured the allowable radius of curvature when wound in a vertical plane at the housing part, between 70 degrees 60 degrees against to the bottom portion At an angle of from the lead-in opening to the receiving part,
The basic crushed stone is laid at least at the position of the pull-in opening,
The drawer opening is an opening for pulling out the cable housed in the housing part to the outside of the housing lot,
A residential land piping system in which a waterproof plug is attached to the one end of the wiring pipe. In the residential land piping system according to claim 1,
The residential land piping system, wherein the pull-in opening is provided at a position away from the center of the bottom surface. In the residential land piping system according to claim 1 or 2,
The wiring pipe has at least a curved pipe part or a straight pipe part connected to the curved pipe part,
The residential land piping system, wherein the one end of the wiring pipe is one end of the bent pipe part or one end of the straight pipe part. In the residential land piping system in any one of Claims 1-3,
The diameter of the drawing opening through which the conduit is passed is larger than the diameter of the conduit.
A residential land piping system, wherein a region between the wiring pipe and the lead-in opening is a drainage portion that drains the water in the housing portion to the outside of the residential land. In the residential land piping system according to claim 3,
The wiring pipe is a residential land piping system having a horizontal pipe portion connecting the bent pipe portion and the common pipe.

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