JP2023096368A - Drain piping device - Google Patents

Abstract

To provide a drain piping device capable of coping with even the case where the thickness of the rising part of a foundation is different.SOLUTION: In a drain piping device 11 that communicates the space enclosed by a rising part 3 of a foundation concrete 1 of a building with the exterior of the foundation concrete 1, the lengths between both end openings of the drain piping device 11, that is, the lengths from an inflow port 13A as one end opening of an inner sleeve pipe 11B to an outflow port 13B as the other end opening of an outer sleeve pipe 11A can be changed according to the thicknesses of the rising part 3, making it possible to accommodate vertical tops with different foundation thicknesses without preparing multiple types of drainage pipes of different lengths.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a drain piping device for discharging water accumulated in the foundation of a building to the outside.

Conventionally, when water accumulates in the space surrounded by the raised part of the foundation, the water is drained by the drain pipe by installing a drainage pipe to penetrate the raised part of the foundation formed by the raft foundation construction method. There has been proposed a device that can be discharged to the outside (for example, see Patent Documents 1 and 2).

JP 2012-207499 A JP 2020-66941 A

Generally, the thickness of the upright portion of the foundation is 120 mm or more, but the thickness may be 150 mm, 160 mm, or more depending on the specifications of the housing maker and housing. For this reason, it is necessary to manufacture drainage pipes of length corresponding to each thickness. It was necessary to process the water drainage pipe on site.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drain piping system that can cope with different thicknesses of the upright portions of the foundation.

In order to solve the above problems, the drain piping device according to claim 1 of the present invention is
A drain piping device that communicates a space surrounded by the upright portion of a building foundation with the outside of the foundation,
It is characterized in that the length between the openings at both ends of the drain piping device can be changed according to the thickness of the rising portion.
According to this feature, since the length between the openings at both ends of the drainage piping device can be changed according to the thickness of the upright portion of the foundation, it is possible to It is possible to correspond to the rising portion of the foundation with different thickness.

A draining piping device according to claim 2 of the present invention is the draining piping device according to claim 1,
Consisting of a plurality of tubular bodies that are polymerized with each other,
It is characterized in that the length between the openings at both ends of the drain piping device can be changed by changing the overlapping range of the tubular bodies.
According to this feature, it is possible to change the length between the openings at both ends of the drain piping device by changing the overlapping range of the tubular bodies.

A draining piping device according to claim 3 of the present invention is the draining piping device according to claim 1,
consists of multiple tubes,
It is characterized in that the length between both end openings of the drain piping device can be changed by connecting the tubular bodies to each other.
According to this feature, it is possible to change the length between the openings at both ends of the drain piping device by connecting the tubular bodies to each other.

1 is a cross-sectional view showing an underfloor drainage structure using a drain piping device as Example 1 of the present invention. FIG. It is an exploded perspective view showing composition of a drainage piping device. It is an exploded perspective view which shows the internal structure of the drainage piping apparatus except a cover member. It is sectional drawing which shows the internal structure of a drainage piping apparatus. FIG. 4 is an enlarged cross-sectional view showing a locking state between a concave groove portion of an outer sleeve tube and a ridge portion of an inner sleeve tube; (a) and (b) are cross-sectional views showing an example of changing the overlapping length dimension. (a) to (c) are diagrams showing an example of construction of an underfloor drainage structure using a drain piping device. (a) is a state in which the lid member is attached to the outer sleeve tube, and (b) is a cross-sectional view illustrating the state in which the lid member is attached to the outer sleeve tube after the decorative treatment. FIG. 5 is a vertical cross-sectional view showing the internal structure of a drain piping device as Modification 1 of the present invention. FIG. 10 is an exploded perspective view showing the configuration of a drain piping device as Embodiment 2 of the present invention. FIG. 11 is a sectional view showing the internal structure of the drain piping device of FIG. 10; (a) to (c) are cross-sectional views showing an example of changing the length dimension of the drainage path. (a) is a state in which the lid member is attached to the outer sleeve tube, and (b) is a cross-sectional view illustrating the state in which the lid member is attached to the outer sleeve tube after the decorative treatment. 8A is a cross-sectional view showing a state in which a cover member is attached to a main tube as Modification 2 of the present invention, and FIG. 8B is a cross-sectional view showing a state in which the cover member is attached to the main tube after decorative treatment. (a) is a cross-sectional view showing a state in which an engaging tube as Modification 3 of the present invention is connected to a main tube, and (b) is a state in which an engaging tube as Modification 4 of the present invention is connected to a main tube. FIG. 11C is a cross-sectional view showing a state, and (c) is a cross-sectional view showing a state in which an engaging tube as Modified Example 5 of the present invention is connected to a main tube; (a) is a perspective view showing the configuration of a drain piping device as Modification 6 of the present invention, (b) and (c) are states in which the length of the drainage path is changed by changing the engagement mode of the engagement pipe. It is a cross-sectional view showing the. (a) is a cross-sectional view showing the configuration of a drain piping device as Modification 7 of the present invention; It is a cross-sectional view showing the. (a), (b) is a longitudinal cross-sectional view showing a modification of the shape of the drain piping device. It is a figure which shows the state which attached the slope and installed the drainage piping apparatus.

[Mode 1]
Form 1 is a drain piping device that communicates a space surrounded by a rising portion of a building foundation with the outside of the foundation,
It is characterized in that the length between the openings at both ends of the drain piping device can be changed according to the thickness of the rising portion.
According to this feature, since the length between the openings at both ends of the drainage piping device can be changed according to the thickness of the upright portion of the foundation, it is possible to It becomes possible to correspond to the rising portion of the foundation with different thickness.

[Mode 2]
Mode 2 is the drain piping device according to Mode 1,
Consisting of a plurality of tubular bodies that are polymerized with each other,
It is characterized in that the length between the openings at both ends of the drain piping device can be changed by changing the overlapping range of the tubular bodies.
According to this feature, it is possible to change the length between the openings at both ends of the drain piping device by changing the overlapping range of the tubular bodies.

[Mode 3]
Mode 3 is the drain piping device according to Mode 1,
It is characterized in that the superposition range can be changed by sliding one tubular body with respect to the other tubular body.
According to this feature, the polymerization range can be changed with a simple operation.

[Mode 4]
Mode 4 is the drain piping device according to Mode 3,
An engaging portion capable of engaging the other tubular body with respect to the one tubular body,
The engaging portion includes a plurality of engaging portions having different overlapping ranges.
According to this feature, the one tubular body and the other tubular body are engaged with each other by engaging the other tubular body with the engaging portion corresponding to the thickness of the raised portion of the foundation. Positional deviation can be prevented.

[Mode 5]
Mode 5 is the drain piping device according to Mode 4,
The locking portion is characterized in that the locking force in the direction of increasing the overlapping range is larger than the locking force in the direction of decreasing the overlapping range.
According to this feature, it is possible to prevent the length from becoming shorter than the set length during construction.

[Mode 6]
Mode 6 is the drain piping device according to Mode 2,
The other tubular body is screwed to one tubular body,
The overlapping range can be changed by rotating the other tubular body with respect to the one tubular body.
According to this feature, the polymerization range can be changed with a simple operation.

[Mode 7]
Mode 7 is the drain piping device according to any one of Modes 2 to 6,
At least one end of the one tubular body or the other tubular body is provided with a finger hook portion.
This feature facilitates the work of changing the polymerization range.

[Mode 8]
Mode 8 is the drain piping device according to Mode 1,
consists of multiple tubes,
It is characterized in that the length between both end openings of the drain piping device can be changed by connecting the tubular bodies to each other.
According to this feature, it is possible to change the length between the openings at both ends of the drain piping device by connecting the tubular bodies to each other.

[Mode 9]
Mode 9 is the drain piping device according to Mode 8,
The plurality of tubular bodies includes a main tube and a connecting tube,
It is characterized in that the connecting pipe can be connected to the main pipe.
According to this feature, by connecting the connecting pipe to the main pipe, it is possible to change the length between the openings at both ends of the drain piping device.

[Mode 10]
Mode 10 is the drain piping device according to Mode 9,
It is characterized in that the connecting pipe can be connected to the connecting pipe.
According to this feature, it is possible to not only connect the connecting pipe to the main pipe, but also to connect the connecting pipe to the connecting pipe, thereby making it possible to correspond to three or more lengths.

[Mode 11]
Mode 11 is the drain piping device according to any one of Modes 2 to 10,
An elastic member or a non-vulcanized member is provided on the outer peripheral surface of the tubular body.
According to this feature, there is no gap between the concrete of the foundation and the tubular body, and it is possible to prevent insects and the like from entering through the gap.

[Form 12]
Mode 12 is the drain piping device according to Mode 11,
The elastic member or the non-vulcanized member is characterized by containing an antitermitant.
According to this feature, the anti-termite effect against termites can be enhanced.

[Mode 13]
Mode 13 is the drain piping device according to Mode 11 or 12,
The elastic member or the non-vulcanized member is provided so as to cover at least the outer end portion or the vicinity of the outer end portion of the outer peripheral surface of the tubular body.
According to this feature, it is possible to effectively prevent the entry of pests and the like.

[Mode 14]
Mode 14 is the drain piping device according to Mode 13,
The elastic member or the non-vulcanized member is
including a first member and a second member having a hardness lower than that of the first member;
The first member is provided at or near the outer end of the outer peripheral surface of the tubular body, and the second member is provided at the inner side of the first member.
According to this feature, by providing the first member having a relatively high hardness at or near the outer end, it is possible to prevent the elastic member or the non-vulcanized member from flowing out. By providing the second member having a relatively low hardness on the inner side of the member, it is possible to reliably prevent the formation of a gap between the concrete of the foundation and the tubular body.

[Mode 15]
Mode 15 is the drain piping device according to any one of Modes 1 to 14,
A closing member for closing the opening is attached to the external opening.
According to this feature, it is possible to prevent insects and the like from entering through the outer opening.

[Mode 16]
Mode 16 is the drain piping device according to Mode 15,
The closure member comprises a collar,
The flange is formed with an inclined surface that is inclined toward the attachment direction to the external opening so as to be thin from the center side to the outer edge side.
This feature improves the design when the closing member is attached.

[Mode 17]
Mode 17 is the drain piping device according to Mode 15 or 16,
The closure member comprises a collar,
The outer diameter of the flange is larger than the outer diameter of the outer opening.
According to this feature, when the closing member is attached, the collar portion overlaps the outer surface of the base around the outer opening or the decorative surface when the decorative treatment is applied, so that the design is improved.

[Mode 18]
Mode 18 is the drain piping device according to any one of Modes 15 to 17,
The closing member is characterized by comprising a threaded portion that is screwed to the inner peripheral surface of the pipe.
According to this feature, it is possible to prevent the external opening from being easily unsealed by the closing member.

[Mode 19]
Form 19 is the drain piping device according to form 18,
The closing member comprises a sealing member in contact with the inner peripheral surface of the pipe,
The sealing member is characterized in that when the threaded portion is screwed together, it contacts the inner peripheral surface of the pipe over a predetermined range closer to the opening on the outer side than the range in which it is screwed into the inner peripheral surface of the pipe.
According to this feature, the outer surface of the base is decorated, and the thickness from the outer side opening to the outer surface of the base or the decorated surface when the decorative treatment is applied is increased, so that the threaded portion of the closing member can be adjusted. The seal member can be brought into contact with the inner peripheral surface of the pipe even if it cannot be screwed all the way in.

[Form 20]
Form 20 is the drain piping device according to form 18,
The closing member comprises a sealing member in contact with the inner peripheral surface of the pipe,
The sealing member is characterized in that when the threaded portion is screwed together, the sealing member contacts the inner peripheral surface of the pipe over a predetermined range on the inner side of the range in which it is screwed into the inner peripheral surface of the pipe.
According to this feature, the outer surface of the base is decorated, and the thickness from the outer side opening to the outer surface of the base or the decorated surface when the decorative treatment is applied is increased, so that the threaded portion of the closing member can be adjusted. The seal member can be brought into contact with the inner peripheral surface of the pipe even if it cannot be screwed all the way in.

[Mode 21]
Mode 21 is the drain piping device according to any one of Modes 1 to 20,
It is characterized in that the end surface of the external opening becomes vertical when the tubular body is arranged at a predetermined angle.
According to this feature, when the tubular body is installed with a predetermined angular slope, the outer surface of the base and the end surface of the outer opening can be aligned.

EMBODIMENT OF THE INVENTION Below, embodiment of the drainage piping apparatus which concerns on this invention is described below based on an Example.

Embodiment 1 A drain piping device as Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 8. FIG. FIG. 1 is a cross-sectional view showing an underfloor drainage structure using a drain piping device as Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view showing the configuration of the drain piping device. FIG. 3 is an exploded perspective view showing the internal structure of the drain piping device excluding the lid member. FIG. 4 is a cross-sectional view showing the internal structure of the drain piping device. FIG. 5 is an enlarged cross-sectional view showing a locking state between the groove portion of the outer sleeve tube and the ridge portion of the inner sleeve tube. 6(a) and 6(b) are cross-sectional views showing an example of changing the overlapping length dimension. FIGS. 7A to 7C are diagrams showing an example of construction of an underfloor drainage structure using a drain piping device. FIG. 8 is a sectional view showing (a) a state in which the lid member is attached to the outer sleeve tube, and (b) a state in which the lid member is attached to the outer sleeve tube after the decorative treatment.

[Configuration of Drainage Piping Device 11]
As shown in FIG. 1, the foundation concrete 1 (foundation) of the present embodiment as an underfloor structure of a building such as a house is mainly composed of reinforcing bars and concrete. A so-called raft foundation is formed by a raised portion 3 erected on the peripheral edge portion of the bottom concrete portion 2 . A plurality of reinforcing bars (not shown) are arranged so as to intersect vertically and horizontally inside the base concrete portion 2 and the rising portion 3 . Since the rising portion 3 is provided in a frame shape at the peripheral portion of the base concrete portion 2 in a plan view, for example, it may be surrounded by the rising portion 3 due to inundation under the floor caused by rainfall during construction of a house or heavy rain after construction of a house. Water may collect in the open space. An underfloor drainage structure 10 is provided as a drainage path for draining the water accumulated in the space surrounded by the rising portion 3 to the outside of the foundation concrete 1. - 特許庁

As shown in FIG. 1, the underfloor drainage structure 10 includes a drainage piping device 11 that communicates a space surrounded by the rising portion 3 of the basic concrete 1 of the building with the outside of the basic concrete 1, a lid member 12, have. The drain piping device 11 is for draining the water accumulated in the space surrounded by the upright portion 3 to the outside of the foundation concrete 1, and includes an inflow port 13A facing the foundation among openings at both ends in the pipe axial direction. , and an outflow port 13B that communicates with the inflow port 13A and faces the outside of the foundation. It flows in and flows out of the foundation from the outflow port 13B. When water is not drained using the drain piping device 11, the outflow port 13B is closed by the cover member 12, thereby preventing entry of water, pests such as termites, small animals, dust, garbage, etc. into the foundation concrete 1. It's like

As shown in FIGS. 2 to 4, the drain piping device 11 includes an outer sleeve pipe 11A (pipe body) formed cylindrically from, for example, polyvinyl chloride resin (PVC), and a polyethylene resin material, for example. It has an inner sleeve tube 11B (tubular body) formed in a cylindrical shape from a material (PE) or the like, and anti-termite sheets 11C and 11C' wound around the outer peripheral surface of the outer sleeve tube 11A.

The axial length of the outer sleeve tube 11A is a predetermined length L1 (for example, L1=120 mm), and the axial length of the inner sleeve tube 11B is a predetermined length L2 (for example, L1 = 120 mm). In addition, since the outer diameter dimension L7 of the inner sleeve tube 11B is shorter than the inner diameter dimension L5 of the outer sleeve tube 11A (L7<L5), the inner sleeve tube 11B can be inserted into the outer sleeve tube 11A. By sliding the inner sleeve pipe 11B in the axial direction with respect to the outer sleeve pipe 11A to change the overlapped dimension L3 (overlapping range), the total length of the drain piping device 11 can be changed. In other words, the length L4 of the drainage path from the inlet 13A to the outlet 13B can be changed stepwise to any length longer than the length L1.

At the end of the outer sleeve tube 11A on the outflow port 13B side, an enlarged diameter portion 21 having longer inner and outer diameters than other portions is formed. can be inserted. In addition, on the inner peripheral surface of the outer sleeve tube 11A, a plurality of annular grooves 22 perpendicular to the tube axis are provided at predetermined intervals L20 (for example, L20 = 10 mm) from the opening end on the inlet 13A side. In this embodiment, 10) are formed.

One end of the inner sleeve tube 11B can be inserted into the outer sleeve tube 11A, and the other end of the inner sleeve tube 11B has an inlet 13A. On the outer peripheral surface of the inner sleeve tube 11B, a plurality of (for example, L20 = 10 mm) annular convex streaks 32 perpendicular to the tube axis are provided at predetermined intervals L20 (for example, L20 = 10 mm) from the opening end on the side opposite to the outflow port 13B. In this embodiment, 10) are formed. The outer diameter dimension L8 of the ridge portion 32 is slightly longer than the inner diameter dimension L5 of the outer sleeve tube 11A (L8>L5). It is insertable, and the protrusion 32 is fitted into the recessed groove 22 and locked, thereby restricting the axial movement of the inner sleeve tube 11B with respect to the outer sleeve tube 11A.

More specifically, as shown in FIG. 5, the concave groove portion 22 and the ridge portion 32 are formed to have a substantially triangular shape when viewed in longitudinal section along the pipe axis direction. , the tip of which is inserted into the recessed groove portion 22 as a locked portion to be locked. In the locked state, when an external force exceeding the locking force is applied in the pipe axial direction, the tip of the protruding portion 32 is elastically deformed to deviate from the concave groove portion 22 and become slidable in the pipe axial direction.

The protruding portion 32 has an inclined surface 32A on the side of the inlet 13A and an inclined surface 32B on the side of the outlet 13B. The inclination angle θ2 of the inclined surface 32B with respect to the pipe axis is formed to be larger than the inclination angle θ1 of the inclined surface 32A with respect to a line parallel to the tube axis (θ2>θ1).

That is, since the inclined surface 32B has a larger inclination angle with respect to the tube axis than the inclined surface 32A, the inclined surface 32B contacts the inner surface of the groove 22 when the inner sleeve tube 11B is pushed into the outer sleeve tube 11A. The locking force is larger than the locking force when the inclined surface 32A is locked to the inner surface of the concave groove portion 22 when the inner sleeve tube 11B is pulled out from the outer sleeve tube 11A. With such a structure, it is possible to prevent the length from becoming shorter than the set length during construction.

In addition, in this embodiment, a plurality of engaging portions are formed by a plurality of ridges 32 formed on the outer peripheral surface of the inner sleeve tube 11B and a plurality of recessed grooves 22 formed on the inner peripheral surface of the outer sleeve tube 11A. Although the form in which the overlapping dimension L3 can be changed by changing the number of locking means that are in the locking state at the same time among the means has been exemplified, the present invention is not limited to this, and the outer sleeve tube 11A The overlapping dimension L3 can be changed by engaging one of the ridges 32 formed on the outer peripheral surface of the inner sleeve tube 11B with one of the plurality of grooves 22 formed on the inner peripheral surface, or By engaging one of the plurality of ridges 32 formed on the outer peripheral surface of the inner sleeve tube 11B with one concave groove 22 formed on the inner peripheral surface of the outer sleeve tube 11A, the overlapping length L3 is obtained. may be changeable.

A seal member may be provided at the end of the inner sleeve tube 11B on the outflow port 13B side so as to be in close contact with the inner peripheral surface of the outer sleeve tube 11A. It is possible to prevent water from seeping into the concrete from the gap between the outer sleeve pipe 11A and the inner sleeve pipe 11B after the construction of .

In addition, a flange portion 33 as a finger hook portion protruding outward is formed at the end portion on the inlet 13A side of the outer peripheral surface of the inner sleeve tube 11B. Since the outer diameter dimension L9 of the flange portion 33 is longer than the outer diameter dimension L6 of the outer sleeve pipe 11A (L9>L6), even when the flange portion 33 approaches the end of the outer sleeve pipe 11A, Since the flange portion 33 protrudes outward from the outer peripheral surface of the outer sleeve tube 11A, a finger can be easily put on the flange portion 33. As shown in FIG.

In this embodiment, as an example of the finger hooking portion, the form in which the annular flange portion 33 is applied to the outer peripheral surface of the inner sleeve tube 11B is exemplified, but the present invention is not limited to this. A finger hook portion may be formed only on a part of the inner sleeve tube 11B in the circumferential direction. Also, the finger hook may be formed near the end instead of the end.

The anti-termite sheets 11C and 11C' are formed as sheets having a predetermined thickness (for example, 2 to 5 mm) by incorporating an anti-termite agent into an elastic member or a non-vulcanized member. Recycled butyl rubber may be mentioned, and regenerated butyl rubber may be used alone, or regenerated butyl rubber may be mixed with one or more kinds of natural rubber, synthetic rubber, thermoplastic elastomer, and the like. In addition, reinforcing agents, fillers, plasticizers, softeners, anti-aging agents, pressure-sensitive adhesives, processing aids, coloring agents, cross-linking agents, cross-linking aids, etc. may be appropriately blended into the elastic member or the unvulcanized member. .

In addition, the termite-proof sheet 11C′ as the first member has higher hardness than the termite-proof sheet 11C as the second member, and is provided at the end on the outflow port 13B side (outside end). is provided on the inlet 13A side (inner side) of the anti-termite sheet 11C'. In this embodiment, the termite-preventing sheet 11C′ provided at the end on the outflow port 13B side has a higher hardness than the termite-preventing sheet 11C on the inflow port 13A side, but the present invention is not limited to this. The hardness of the anti-termite sheets 11C and 11C' may be the same or substantially the same. Also, the anti-termite sheets 11C and 11C' may be formed separately, or may be integrally formed by two-color molding or the like. Further, if provided at least at the end on the outflow port 13B side (external end) or near the end on the outflow port 13B side (near the external end) on the outer peripheral surface of the outer sleeve tube 11A, other portions may not be provided.

The lid member 12 closes the tubular portion 40 having an outer diameter L10 smaller than the inner diameter L5′ (L10<L5′) of the enlarged diameter portion 21 of the outer sleeve tube 11A, and an opening at one end of the tubular portion 40. and a disk-shaped cover plate 41 provided to do so. An annular guide portion 42, which can be inserted into the enlarged diameter portion 21 of the outer sleeve tube 11A and cannot be inserted deeper than the enlarged diameter portion 21, protrudes from the outer peripheral surface of the cylindrical portion 40. A seal member 43 made of a rubber material or the like is fitted in a concave groove formed on the outer peripheral surface of the guide portion 42 .

Therefore, when the cylindrical portion 40 is inserted into the outflow port 13B of the outer sleeve tube 11A and the guide portion 42 is positioned within the enlarged diameter portion 21, the sealing member 43 is pressed against the inner peripheral surface of the enlarged diameter portion 21. , the outflow port 13B is closed by the cover member 12 in a water-sealed state.

In addition, since the outer diameter dimension L11 of the cover plate 41 is longer than the outer diameter dimension L6′ of the enlarged diameter portion 21 of the outer sleeve tube 11A (L11>L6′), the cover plate 41 becomes the outer sleeve. The flange 41A of the cover plate 41 is arranged to protrude outward from the outer peripheral surface of the outer sleeve tube 11A when the outlet 13B is closed by contacting the end surface of the tube 11A around the outlet 13B. . In addition, an inclined surface 41B is formed on the outer peripheral edge of the cover plate 41 and is inclined toward the outflow port 13B so as to become thinner from the center to the outside.

A recessed portion 44 having a rectangular opening is formed at approximately the center of the outer surface of the lid plate 41. A tool such as a screwdriver is inserted into the recessed portion 44 to pull out the lid member 12 in the direction of the tube axis. , the cover member 12 can be removed from the outer sleeve tube 11A.

The cover member 12 is attached by being inserted into the outer sleeve tube 11A. However, as in a second embodiment described later, the cover member 12 is attached by being screwed into the outer sleeve tube 11A. There may be.

As shown in FIGS. 6(a) and 6(b), the drainage piping device 11 configured in this manner allows the inner sleeve pipe 11B to be inserted through the opening of the outer sleeve pipe 11A on the side opposite to the outflow port 13B. By changing the overlapping dimension L3 that overlaps (overlaps) by sliding the inner sleeve pipe 11B with respect to the outer sleeve pipe 11A in the pipe axial direction, the overall length of the drain piping device 11, that is, the inlet port 13A to the outflow port 13B can be changed to any length dimension longer than the length dimension L1.

Specifically, as shown in FIG. 6(a), when almost the entire inner sleeve tube 11B is inserted into the outer sleeve tube 11A, the overlapping dimension L3 becomes long, so the length dimension of the drainage path is L4 is short. On the other hand, as shown in FIG. 6(b), when a part of the inner sleeve tube 11B is inserted into the outer sleeve tube 11A, the overlapping dimension L3 becomes short, so the drainage path length dimension L4 becomes long. dimension. Therefore, the drainage path length dimension L4 can be changed according to the thickness dimension of the rising portion 3 .

Further, when the inner sleeve tube 11B is slid in the tube axial direction with respect to the outer sleeve tube 11A, the ridges 32 are fitted into the grooves 22 and locked, so that the desired length of the drainage path can be achieved. After changing to L4, the desired drainage path length dimension L4 is maintained without restricting the axial movement of the inner sleeve tube 11B with respect to the outer sleeve tube 11A using an adhesive, a screw member, or the like. Therefore, displacement of the inner sleeve tube 11B with respect to the outer sleeve tube 11A is prevented. In addition, since the locked state is released by applying an external force larger than the locking force in the tube axial direction in the locked state, the length can be easily changed.

This embodiment shows an example in which the length dimension of the outer sleeve tube 11A is 120 mm, and ten recessed groove portions 22 of the outer sleeve tube 11A and ten protruded streak portions 32 of the inner sleeve tube 11B are formed at intervals of 10 mm. The drainage path length dimension L4 can be changed in the range of 120 to 220 mm (+ the thickness of the flange 33), but the interval between the concave groove portion 22 and the convex ridge portion 32 can be changed to an interval other than 10 mm (for example, 1 mm, 2 mm, 5 mm, 15 mm, etc.), and the number of the groove portions 22 and the protrusion portions 32 may be set to a number other than ten (for example, two, five, fifteen, etc.). Also, the range in which the length L4 of the drainage path can be changed is not limited to 120 to 220 mm (+the thickness of the flange 33), and by making the lengths of the outer sleeve tube 11A and the inner sleeve tube 11B different, It may be possible to change to a range other than the above.

[Construction Example of Underfloor Drainage Structure 10 Using Drain Piping Device 11]
Next, a construction example of the underfloor drainage structure 10 using the drain piping device 11 will be described with reference to FIGS. 7 and 8. FIG.

First, as shown in FIG. 7(a), reinforcing bars (not shown) are placed in the portions where the concrete for forming the base concrete portion 2 and the rising portion 3 is placed. In addition, an outer formwork FA for forming the outer surface of the upright portion 3 is installed. In addition, as described above, regarding the water drain piping device 11 to be used, by sliding the inner sleeve pipe 11B in the pipe axial direction with respect to the outer sleeve pipe 11A and changing the overlapping dimension L3 to overlap (overlap), The drainage path length dimension L4 is set in advance according to the thickness dimension of the rising portion 3 to be constructed. Incidentally, the cover member 12 is removed from the outer sleeve tube 11A.

Next, as shown in FIG. 7(b), the bottom slab concrete portion 2 is placed. The drainage piping device 11 is placed before the bottom concrete portion 2 is hardened. For example, by pressing the drainage piping device 11 against the bottom concrete portion 2 , the bottom portion of the drainage piping device 11 can be installed so as to be embedded in the bottom concrete portion 2 . By pressing the lower surface of the drainage piping device 11 against the bottom concrete portion 2 before hardening, the air between the bottom surface of the drainage piping device 11 and the bottom concrete portion 2 can be preferably removed.

Also, when pressing the lower surface of the drainage piping device 11 against the unhardened base concrete portion 2, the lower end of the inlet 13A of the inner sleeve pipe 11B is positioned at the same height as or slightly below the upper surface of the base concrete portion 2. This makes it easier for the water accumulated on the upper surface of the bottom concrete portion 2 to flow into the inlet 13A. In addition, the end face of the outer sleeve pipe 11A on the outflow port 13B side is pressed against the inner surface of the outer formwork FA to prevent concrete from entering between the inner surface and the end face of the formwork FA. In addition, a collection channel or guideway may be installed separately or formed on the concrete surface for facilitating the flow of water into the inlet 13A.

In addition, in the drainage piping device 11, the inclination angle θ2 of the inclined surface 32B of the protruding portion 32 is larger than the inclination angle θ1 of the inclined surface 32A (θ2>θ1), so that the overlapping length L3 is set as the long dimension. The locking force in the sliding direction is greater than the locking force in the sliding direction that makes the overlapping dimension L3 short. However, since it is larger than the locking force that restricts the slide movement in the removal direction, after the drainage piping device 11 is arranged on the base concrete portion 2 before hardening and before the concrete hardens, for example, the mold It is possible to prevent the length from becoming shorter than the set length due to external force such as contact when installing the frame FB.

Further, since the lower portion of the flange portion 33 of the inner sleeve pipe 11B is installed so as to be embedded in the concrete, when the concrete of the base concrete portion 2 hardens and the concrete of the rising portion 3 is placed, the concrete that flows into Thus, the inner sleeve tube 11B is prevented from being displaced in the tube axial direction due to being pushed by the inner sleeve tube 11B.

Although not particularly shown, a pair of seat portions for fixing to the upper surface of the base concrete portion 2 may protrude from both sides of the pipe axis at the lower portion of the outer peripheral surface of the outer sleeve pipe 11A. By protruding a pile portion embedded in the bottom plate concrete portion 2 at the lower part of the outer peripheral surface of the drain piping device 11, the drain piping device 11 may be prevented from rolling in the circumferential direction. Furthermore, the mounting surfaces of the outer sleeve pipe 11A on the pair of seat portions may be formed to be slightly inclined. It is easy to incline downward toward the bottom, and drainage can be promoted.

Next, as shown in FIG. 7(c), the inner formwork FB is installed. At this time, the inner surface of the inner formwork FB is brought into contact with the end surface of the inner sleeve pipe 11B on the side of the inlet 13A so as to be pressed so that the concrete does not enter from between the inner surface and the end surface of the formwork FB. . As a result, the drain piping device 11 is sandwiched between the forms FA and FB from both sides of the pipe axis. An O-ring or the like for preventing concrete from entering may be provided on the contact surface of the flange portion 33 with the formwork FB. After that, concrete for the rising portion 3 is placed.

After the concrete of the rising portion 3 has hardened, the formwork FA and FB are removed to form the underfloor drainage structure 10 in which the drainage piping device 11 is disposed so as to penetrate the rising portion 3 in the thickness direction. .

When the underfloor drainage structure 10 is configured, the inlet 13A is arranged substantially flush with the inner surface of the rising portion 3, and the outlet 13B is arranged substantially flush with the outer surface of the rising portion 3. In addition, by arranging the lower end of the inlet 13A at the same height as or slightly below the upper surface of the base concrete portion 2, the water accumulated on the upper surface of the base concrete portion 2 easily flows into the inlet 13A.

The water that has flowed into the interior from the inflow port 13A is guided through the drain piping device 11 toward the outflow port 13B, and then flows out of the foundation from the outflow port 13B. In addition, since the inner sleeve tube 11B is inserted into the outer sleeve tube 11A so as to overlap, the lower portion of the inner peripheral surface of the inner sleeve tube 11B is higher than the lower portion of the inner peripheral surface of the outer sleeve tube 11A. , the water flowing inside from the inlet 13A is smoothly guided from the inner sleeve pipe 11B to the outer sleeve pipe 11A. The outer sleeve tube 11A and the inner sleeve tube 11B may be overlapped so that the outer sleeve tube 11A is inserted inside the inner sleeve tube 11B.

In addition, since the anti-termite sheets 11C and 11C' containing the anti-termite agent are arranged on the outer peripheral surface of the outer sleeve pipe 11A, there is no gap between the concrete and the outer sleeve pipe 11A, and the Intrusion of pests such as termites, dust, garbage, etc. can be prevented, and the anti-termite effect against termites can be enhanced.

Also, the termite-proof sheet 11C' is provided so as to cover at least the end portion of the outer peripheral surface of the outer sleeve tube 11A on the outflow port 13B side, thereby effectively preventing entry of termites. Further, since the anti-termite sheet 11C' is harder than the anti-termite sheet 11C, it is possible to prevent the outflow of the anti-termite sheet 11C'. By providing the low anti-termite sheet 11C, it is possible to reliably prevent the formation of a gap between the concrete and the outer peripheral surface of the outer sleeve pipe 11A.

As shown in FIG. 8( a ), the ridges 32 of the inner sleeve pipe 11B that are not engaged with the concave grooves 22 are exposed on the outer peripheral surface, so that the inner sleeve pipe 11B stands upright after the concrete hardens. Detachment from the upper part 3 is preferably restricted.

In addition, as shown in FIG. 8A, after the concrete of the rising portion 3 has hardened, the cover member 12 is attached to the outflow port 13B to prevent termites from entering through the outflow port 13B. When the cover member 12 is attached, the flange portion 41A of the cover plate 41 overlaps the surface of the concrete extending further outward from the end face of the outer sleeve tube 11A around the outflow port 13B. Since the boundary between the end face of the outer sleeve pipe 11A and the concrete surface is concealed, the design is improved.

In addition, since an inclined surface 41B inclined toward the outflow port 13B side is formed on the outer peripheral edge of the cover plate 41 so as to become thin from the center side to the outside, the boundary portion between the cover member 12 and the concrete surface is formed. This is inconspicuous, and the design when the outlet 13B is closed with the lid member 12 is improved.

Further, as shown in FIG. 8(b), after the concrete of the rising portion 3 has hardened, the outer surfaces (surfaces) of the base concrete portion 2 and the rising portion 3 are subjected to decorative treatment such as applying mortar or the like. A coating film portion 5 may be provided.

In this case, the cover plate 41 of the cover member 12 is arranged on the surface side of the coating film portion 5, so that the cover plate 41 is separated from the end surface of the outer sleeve tube 11A. Since it abuts against the inner peripheral surface of the portion 21, the water-sealed state of the outflow port 13B is maintained.

Further, in this embodiment, the configuration in which the length L4 of the drainage path can be changed by changing the overlapping range of the outer sleeve tube 11A and the inner sleeve tube 11B was exemplified, but the present invention is limited to this. Instead, three or more tubular bodies may be overlapped with each other to change the length L4 of the drainage path.

In this embodiment, the outlet is formed at one end of the outer sleeve tube 11A and the inlet is formed at the other end of the inner sleeve tube 11B, but the inlet is formed at one end of the outer sleeve tube 11A. and an outflow port may be formed at the other end of the inner sleeve tube 11B.

[Modification 1]
Next, a drain piping device 11 as Modification 1 of the present invention will be described with reference to FIG. FIG. 9 is a vertical cross-sectional view showing the internal structure of a drain piping device as Modification 1 of the present invention.

In the first embodiment, the outer sleeve tube 11B has a protruding portion 32 formed on the outer peripheral surface of the inner sleeve tube 11B as a locking portion and engaged with a concave groove portion 22 formed on the inner peripheral surface of the outer sleeve tube 11A. A configuration is illustrated in which the inner sleeve tube 11B is slidable in the tube axial direction with respect to the sleeve tube 11A and the axial slide movement of the inner sleeve tube 11B with respect to the outer sleeve tube 11A is restricted. However, the present invention is not limited to this. For example, as shown in FIG. The male threaded portion 35 may be spirally formed on the surface, and the male threaded portion 35 may be screwed into the female threaded portion 25 by rotating the inner sleeve tube 11B around the tube axis. By doing so, the inner sleeve tube 11B can be slid in the tube axial direction relative to the outer sleeve tube 11A, and the axial slide movement of the inner sleeve tube 11B relative to the outer sleeve tube 11A is restricted. be.

In this case, by rotating the inner sleeve pipe 11B forward or backward about the pipe axis to change the overlapping dimension L3 (overlapping range), the total length dimension L4 of the water draining piping device 11 is made larger than the length dimension L1. The length dimension can be changed steplessly. At this time, the length can be changed by a simple operation of rotating the inner sleeve tube 11B around the tube axis, and the length dimension after the change can be maintained. A helical male thread may be formed on the inner peripheral surface of the outer sleeve tube 11A, and a helical female thread may be formed on the outer peripheral surface of the inner sleeve tube 11B.

Moreover, although not shown, the inner sleeve tube 11B may be slidably moved in the tube axial direction while the outer peripheral surface of the inner sleeve tube 11B is in contact with the inner peripheral surface of the outer sleeve tube 11A. In such a configuration, a seal member may be provided at the end of the inner sleeve tube 11B on the outflow port 13B side so as to be in close contact with the inner peripheral surface of the outer sleeve tube 11A. It is possible to prevent water from seeping into the concrete from the gap between the outer sleeve pipe 11A and the inner sleeve pipe 11B after the construction of the foundation.

A drain piping device as a second embodiment of the present invention will be described with reference to FIGS. 10 to 13. FIG. FIG. 10 is an exploded perspective view showing the configuration of a drain piping device as Embodiment 2 of the present invention. 11 is a cross-sectional view showing the internal structure of the drain piping device of FIG. 10. FIG. 12A to 12C are cross-sectional views showing an example of changing the length dimension of the drainage path. 13(a) is a cross-sectional view showing a state in which the lid member is attached to the outer sleeve tube, and FIG. 13(b) is a cross-sectional view showing a state in which the lid member is attached to the outer sleeve tube after the decorative treatment. In the following description, members and parts similar to those of the first embodiment are given the same reference numerals, and detailed description thereof will be omitted.

[Configuration of Drainage Piping Device 11]
As shown in FIGS. 10 and 11, the drainage piping device 51 of the present embodiment used in the underfloor drainage structure 10 has a main body pipe 51A formed in a cylindrical shape, for example, from a polyvinyl chloride resin material (PVC) or the like. (pipe body), and a plurality of connection pipes 51B (pipe bodies) which are formed of polyvinyl chloride resin material (PVC), for example, in a substantially square tubular shape and can be connected (connected) by engaging with the main pipe 51A. and a substantially rectangular cylindrical spacer member 51C that can be attached to the end face of the connecting pipe 51B.

The length of the main tube 51A in the tube axial direction is a predetermined length dimension L51 (for example, L51=120 mm), and the length of the plurality of connecting tubes 51B in the tube axial direction is a predetermined length dimension L52 (eg, L52 = 20 mm). That is, the axial length L51 of the main tube 51A is longer than the axial length L52 of the connecting tube 51B (L51>L52).

The main tube 51A includes a cylindrical portion 52, an enlarged diameter portion 21 formed on the outflow port 13B side of the cylindrical portion 52, and an end portion of the cylindrical portion 52 opposite to the outflow port 13B. and a connected portion 53 to which 51B can be connected. The connected portion 53 has a substantially square tubular shape and is integrally formed with the cylindrical portion 52. The end face on the opposite side of the outflow port 13B has a groove-like shape into which an engaging projection 57 described later can be inserted. The engaging recess 55 is formed in a substantially rectangular frame shape when viewed from the inlet 13A side.

The connecting pipe 51B includes an extension portion 56 having the same inner diameter and outer diameter as the connected portion 53 of the main pipe 51A, and one end surface of the extension portion 56 projecting in the pipe axial direction. It is composed of an engaging convex portion 57 that can be inserted into the engaging concave portion 55 and an engaging concave portion 58 that is formed on the other end surface of the extension portion 56 and into which the engaging convex portion 57 can be inserted. The engaging recess 58 is formed in a substantially rectangular frame shape when viewed from the inlet 13A side, and has the same shape as the engaging recess 55 of the main tube 51A.

Moreover, a sealing member may be provided for at least a part of the engaging convex portion 57 of the connecting pipe 51B to be in close contact with the engaging concave portion 53 or the engaging concave portion 58. It is possible to prevent water from seeping into the concrete later through the gap between the outer sleeve pipe 11A and the inner sleeve pipe 11B.

These connecting pipes 51B are formed so that they can be connected (connected) in the pipe axial direction, and the length of the extension portion 56 of each connecting pipe 51B in the pipe axial direction is an extension dimension L53 (for example, L53=10 mm). ing. Note that the extended dimension L53 is not limited to the above and can be changed in various ways. Also, a plurality of connecting pipes 51B having different extension dimensions L53 (for example, L53=1 mm, 2 mm, 5 mm, 15 mm, etc.) may be provided.

The spacer member 51C is made of a rectangular frame member having the same shape as the engaging projection 57 of the connecting pipe 51B, and when inserted into the engaging recess 58, the end face of the spacer member 51C and the engaging recess of the connecting pipe 51B are aligned. The end face of the spacer member 51C and the end face of the connecting pipe 51B on the side of the engaging recess 58 are substantially flush with each other, and when the spacer member 51C is inserted into the engaging recess 55 of the main tube 51A, become flush.

A female threaded portion 61 is spirally formed at a position near the inlet 13A side of the enlarged diameter portion 21 on the inner peripheral surface of the main tube 51A of this embodiment, and the outer peripheral surface of the cylindrical portion 40 of the lid member 12 is formed. Since a male threaded portion 62 is spirally formed at a position nearer the inlet 13A side than the seal member 43 in , a general-purpose tool such as a screwdriver is inserted into the concave portion 44 of the cover plate 41 to remove the cover member 12. The lid member 12 can be removed from the main tube 51A by pulling it forward while rotating it in the circumferential direction about the tube axis.

The cover member 12 is attached by being screwed into the main tube 51A, but is attached by inserting the cover member 12 into the main tube 51A as in the first embodiment. may

The drainage pipe device 51 configured in this way connects (connects) the connecting pipe 51B to the end surface of the main pipe 51A on the side of the inlet 13A, or engages another connecting pipe 51B with the connecting pipe 51B. By connecting the water drain piping device 51 with the length dimension L51, the length dimension L54 of the drainage path from the inlet 13A to the outlet 13B can be set to any length dimension longer than the length dimension L51. can be changed in stages.

Specifically, as shown in FIG. 12(a), the connecting pipe 51B arranged on the inlet port 13A side of the main pipe 51A is moved to the engagement convex portion of the connecting pipe 51B as shown in FIG. 12(b). By connecting the portion 57 to the main pipe 51A so as to fit into and engage with the engaging recess 55 of the main pipe 51A, the drainage path length dimension L54 of the drain piping device 51 is extended by the extension dimension L53. It extends in the tube axis direction. Next, another connecting pipe 51B arranged closer to the inlet 13A than the connecting pipe 51B engaged with the main pipe 51A is attached to the main pipe 51A, as shown in FIG. 12(c). By engaging with the main pipe 51A so as to be fitted into the engaging recess 55 of the pipe 51A, the drainage path length dimension L54 of the drain piping device 51 is extended in the pipe axial direction by twice the extension dimension L53. extended towards.

When setting the length L54 of the drainage path shown in FIG. , the end face of the connecting pipe 51B becomes flat. Further, the opening of the endmost connecting pipe 51B to which the spacer member 51C is attached functions as the outflow port 13B of the drain piping device 51 (see FIG. 13(c)). When only the main pipe 51A is used and the connecting pipe 51B is not used, the end surface of the main pipe 51A is flattened by fitting the spacer member 51C into the engaging recess 58 of the connecting pipe 51B. The opening of the main pipe 51A functions as the outflow port 13B of the drain piping device 51. As shown in FIG.

In the drain piping device 51 of the second embodiment configured as described above, the connection pipe 51B is connected (connected) to the end surface of the main pipe 51A on the side of the inflow port 13A, or the connection pipe 51B is further connected with another By connecting the connecting pipes 51B and repeating this, the length of the drainage path from the inlet 13A to the outlet 13B is adjusted according to the total length of the drain piping device 51, that is, the number of connections of the connecting pipes 51B. Since L54 can be changed to a desired length, the length dimension can be changed in advance according to the thickness dimension of the rising portion 3 to be constructed. The length dimension L51 of the main pipe 51 is 120 mm, and by connecting the connecting pipe 51B, the drainage path length dimension L4 can be changed to a length of 120 mm or more. Dimension L51 can be changed to another dimension (e.g., 50 mm, 100 mm, 150 mm, etc.), and drainage path length dimension L4 can be changed within a range of less than 120 mm or more than 120 mm. may be Further, not only the connecting pipe 51B having a fixed size, but also a plurality of types of connecting pipes 51B having different lengths L53 may be combined to change the length L4 of the drainage path. You may enable it to correspond.

Then, the drainage piping device 51 in which the drainage path length dimension L54 is set to a desired length dimension in this way can be constructed in the same manner as the construction method described in FIGS. 7 and 8 of the first embodiment. Therefore, an underfloor drainage structure 10 as shown in FIG. 13(a) or FIG. 13(b) can be constructed.

Further, when the male threaded portion 62 is screwed to the female threaded portion 61, the seal member 43 is in close contact with the inner peripheral surface of the pipe over a predetermined range closer to the outflow port 13B than the threaded range between the male threaded portion 62 and the female threaded portion 61. As shown in FIG. 13(b), the surface of the basic concrete 1 is decorated, and the thickness from the outflow port 13B to the surface of the basic concrete 1 is increased, so that the threaded portion of the cover member 12 is maximized. Even if it cannot be screwed all the way in, the seal member 43 can be brought into close contact with the inner peripheral surface of the pipe, so that the water sealing state can be maintained.

[Modification 2]
Next, a drain piping device 51 and a lid member 12 as Modified Example 2 of the present invention will be described with reference to FIG. 14 . FIG. 14A is a cross-sectional view showing a state in which a lid member is attached to a main pipe as Modification Example 2 of the present invention, and FIG. .

In the second embodiment, the sealing member 43 of the lid member 12 is configured such that when the male threaded portion 62 and the female threaded portion 61 are screwed together, the sealing member 43 is in a predetermined range closer to the outflow port 13B than the threading range between the male threaded portion 62 and the female threaded portion 61. 14(a), the present invention is not limited to this. For example, as shown in FIG. A female threaded portion 61 is helically formed on the enlarged diameter portion 21 on the inner peripheral surface of the lid member 12, and a male threaded portion is formed on the outer peripheral surface of the tubular portion 40 of the lid member 12 at a position closer to the outflow port 13B side than the seal member 43. 62 may be spirally formed.

By doing so, as shown in FIG. 14(b), the surface of the basic concrete 1 is decorated, and the thickness from the outflow port 13B to the surface of the basic concrete 1 increases, so that the cover member 12 Even if the threaded portion cannot be screwed all the way in, the sealing member 43 can be brought into close contact with the inner peripheral surface of the pipe, so that the water sealing state can be maintained.

As shown in FIG. 14(b), a female threaded portion 61 is formed on the inner peripheral surface of the enlarged diameter portion 21, and a male threaded portion 62 is formed on the outer peripheral surface of the enlarged diameter portion formed on the cylindrical portion 40. This prevents the sealing member 43 from coming into close contact with the female threaded portion 61 when the cover member 12 is inserted into the outlet 13B. may

[Modifications 3 to 5]
Next, drain pipe devices 51 as modified examples 3 to 5 of the present invention will be described with reference to FIG. 15(a) is a cross-sectional view showing a state in which an engagement tube as Modification 3 of the present invention is connected to a main tube; FIG. 11C is a cross-sectional view showing a state in which the engaging tube is connected to the main tube as Modification 5 of the present invention;

In the second embodiment, the connecting pipe 51B connected to the main pipe 51A closest to the inflow port 13A side, that is, the connecting pipe 51B forming the inflow port 13A of the draining pipe device 51 has a spacer member 51C in the engagement concave portion 58 of the connecting pipe 51B. However, the present invention is not limited to this, and for example, the inlet 13A of the drain piping device 51 is formed as in the third modification shown in FIG. The connecting pipe 51B may be different in function, shape, etc. from the connecting pipe 51B connected to the outflow port 13B side of the connecting pipe 51B.

Specifically, as the connecting pipe 51B forming the inflow port 13A of the drain piping device 51, for example, the outer peripheral surface and the inner peripheral surface of the extension part 56 are connected to the inflow port 13A so that the inflow port 13A is expanded in diameter. By doing so, the water accumulated on the upper surface of the bottom slab concrete part 2 is smoothly guided to the inside of the drain pipe device 51. - 特許庁

Further, in the second embodiment, the engaging projection 57 is formed on one end surface of the extension portion 56, and the engaging recess portion 58 into which the engaging projection portion 57 can be inserted is formed on the other end surface of the extension portion 56. However, the present invention is not limited to this. For example, as in Modification 4 shown in FIG. A stepped portion 70 is formed on the inner peripheral surface with which the engaging protrusion 57 can be engaged, and the engaging protrusion 57 and the spacer member 51C are engaged with the inner peripheral surface of the extension portion 56 of each connecting pipe 51B. A stepped portion 71 may be formed as a possible engaged portion.

15(c), a stepped portion 72 with which the engaging convex portion 57 can be engaged is formed on the outer peripheral surface of the end portion of the connected portion 53 that is engaged with the connecting pipe 51B. is formed, and a stepped portion 73 as an engaged portion with which the engaging convex portion 57 and the spacer member 51C can be engaged may be formed on the outer peripheral surface of the extension portion 56 of each connecting pipe 51B.

[Modification 6]
Next, a drain piping device as Modification 6 of the present invention will be described with reference to FIG. 16 . 16, (a) is a perspective view showing the configuration of a water drain piping device as Modification 6 of the present invention, (b) and (c) show the length dimension of the drainage path by changing the engagement mode of the engagement pipe. is a cross-sectional view showing a state in which .

In Embodiment 2 and Modifications 2 to 5, the length of the drainage path is increased or decreased by engaging another engagement tube with the engagement tube engaged with the main tube 51A and increasing or decreasing the number of engagement tubes. Although the changeable form has been exemplified, the present invention is not limited to this, and as shown in FIG. The length dimension may be changeable.

As shown in FIG. 16(a), for example, a substantially rectangular frame-shaped stepped portion 80 is formed on the inner peripheral surface of the connected portion 53 of the main tube 51A. Three side portions 80A to 80C of the 80D are formed with engaging recesses 81A to 81C having predetermined lengths in the tube axial direction. The engaging convex portion 57 of the connecting pipe 51B protrudes in the shape of a square frame from the end surface of the extension portion 56 so as to be able to be inserted into the inner peripheral surface of the connected portion 53. Engagement projections 57A to 57C that can be engaged with the engagement recesses 81A to 81C are projected from three of the four sides. The projecting lengths of the engaging projections 57A to 57C in the tube axis direction become longer in the order of the engaging projections 57A, 57B, and 57C (projection length 57A<57B<57C). On the other hand, the engagement recesses 81A to 81C are formed so that the engagement protrusion 57C having the longest projecting length can be fitted.

As shown in FIG. 16(b), the engaging protrusion 57A is engaged with the engaging recess 81A, the engaging protrusion 57B is engaged with the engaging recess 81B, and the engaging protrusion 57C is engaged with the engaging recess. When the connecting pipe 51B is connected to the connecting portion 53 so as to be engaged with the connecting portion 81C, the tip surface of the engaging projection 57 contacts the side portion 80D of the connecting portion 53. It is the length dimension of the portion 56 in the tube axis direction.

Further, as shown in FIG. 16(c), the engagement protrusion 57A is engaged with the engagement recess 81B, and the engagement protrusion 57B is engaged with the engagement recess 81C. When the connecting pipe 51B is connected, the longest engaging convex portion 57C abuts on the side portion 80D, so that none of the engaging convex portions 57A to 57C are engaged with the engaging concave portions 81A to 81C, and the extended dimension L53 is the longest dimension because it is the sum of the length dimension of the extension portion 56 in the tube axis direction and the projection dimension of the engaging convex portion 57C.

Although not shown in particular, the connecting pipe 51B is connected to the connected portion 53 so that the engaging convex portion 57A is engaged with the engaging concave portion 81C and the engaging convex portion 57C is engaged with the engaging concave portion 81A. Then, since the engaging projection 57B contacts the side portion 80D, none of the engaging projections are engaged with the engaging recess 81B, and the extension dimension L53 is the length dimension of the extension portion 56 in the pipe axis direction. and the projection dimension of the engaging projection 57B. Further, when the connecting pipe 51B is connected to the connected portion 53 so that the engaging convex portion 57B is engaged with the engaging concave portion 81A and the engaging convex portion 57C is engaged with the engaging concave portion 81B, the engaging convex portion Since the portion 57A is in contact with the side portion 80D, none of the engaging protrusions are engaged with the engaging recess 81C, and the extension dimension L53 is equal to the length dimension of the extension portion 56 in the tube axis direction and the engagement protrusion. The dimension is obtained by adding the projection dimension of the portion 57A.

In this manner, by changing the manner of engagement of the connecting pipe 51B with the main pipe 51A, it may be possible to change the length dimension of the drainage path to a plurality of types. In this case, without preparing a plurality of connecting pipes 51B, four extension dimensions L53 can be changed simply by rotating the connecting pipe 51B about the pipe axis by a predetermined angle. In this modified example, each of the three engaging projections can be selectively engaged with each of the three engaging recesses. may be selectively engageable.

Further, after connecting the connecting pipe 51B of the present modification to the main pipe 51A, a single or a plurality of connecting pipes 51B of the second embodiment are further connected to the ends of the connecting pipe 51B of the present modification to form a drainage path. The length dimension may be changed to be longer.

[Modification 7]
Next, a drain piping device as Modification 7 of the present invention will be described with reference to FIG. 17, (a) is a cross-sectional view showing the configuration of a water drain piping device as Modification 7 of the present invention, (b) and (c) show the length dimension of the drainage path by changing the engagement mode of the engagement pipe. is a cross-sectional view showing a state in which .

As shown in FIG. 17(a), the outer sleeve tube 11A of this modified example has an engaging groove 90 formed in the inner peripheral surface on the inlet 13A side. The engagement groove 90 includes a guide portion 90A extending in the pipe axial direction from the end on the side of the inflow port 13A toward the outflow port 13B, and an engaging groove 90A extending in the circumferential direction from different positions in the longitudinal direction of the guide portion 90A. Joint portions 90B to 90F are provided. On the other hand, the inner sleeve tube 11B has an insertion portion 91 which can be inserted into the outer sleeve tube 11A. A possible engaging projection 92 projects outwardly.

In the drain piping device 11 of this modified example configured in this way, as shown in FIG. 91 is inserted into the outer sleeve tube 11A and slid so that the engaging projection 92 moves along the guide portion 90A. By rotating the inner sleeve tube 11B around the tube axis, the engaging projection 92 is engaged with the engaging portion 90F, thereby restricting the sliding movement of the inner sleeve tube 11B in the tube axis direction and reducing the length of the drainage path. This is the mode with the shortest length dimension. .

Further, as shown in FIG. 17(c), when the inner sleeve tube 11B is rotated around the tube axis when the engaging projection 92 reaches the engaging portion 90C, the engaging projection 92 moves toward the engaging portion 90C. 90C to restrict the sliding movement of the inner sleeve tube 11B in the tube axial direction, and the portion that is not inserted into the outer sleeve tube 11A becomes the extended dimension L3', as shown in FIG. 17(B). The length of the drainage path is longer by the extension dimension L3'.

In this manner, the length of the drainage path may be changed by changing the manner of engagement of the inner sleeve tube 11B with the outer sleeve tube 11A. In this case, without preparing a plurality of tubular bodies, the length of the drainage path can be adjusted stepwise simply by inserting the inner sleeve tube 11B into the outer sleeve tube 11A to a predetermined depth and then rotating it around the tube axis by a predetermined angle. can be changed to Incidentally, the number of engaging portions 90B to 90F can be changed variously, and is not limited to five as described above.

Further, in the drainage piping device 11 of the first embodiment and the drainage piping devices 51 of the second embodiment and modifications 1 to 6, basically, the outer sleeve pipe 11A (pipe body) and the inner sleeve pipe The tubular bodies such as 11B (tubular body) and the cylindrical portion 52 of the main tube 51A were formed so that the cross-sectional shape orthogonal to the tube axis was circular or substantially circular, as shown in FIG. 18(a). As shown in FIG. 18B, the vertical cross-sectional shape perpendicular to the tube axis may be formed in a substantially rectangular frame shape, or may be formed in a non-annular or non-rectangular frame shape as shown in FIG. 18(b). may In other words, the shape is arbitrary as long as it is annular.

Further, as shown in FIGS. 18(a) and 18(b), since the lower portion is formed flat, the base concrete portion in a semi-hardened state as described with reference to FIG. 7(b) 2, the stability is improved when the drain piping device 11 is placed.

Also, as shown in FIG. 19(a), the drain piping device 11 described in the first embodiment, and as shown in FIG. 19(b), the drain piping device 51 described in the second embodiment. , the pipe axis of at least a part of the pipe body of the drain piping device 11 (one-dot chain line in FIG. 19) is arranged so as to gently incline downward from the inlet 13A to the outlet 13B, so that the inlet 13A can be preferably guided to the outflow port 13B.

Further, as shown in FIGS. 19A and 19B, the outer sleeve tube 11A and the main tube 51A are configured such that the tube axis of the other portion is bent with respect to the tube axis of the enlarged diameter portion 21. However, the drainage piping device 11 of the first embodiment and the drainage piping devices 51 of the second embodiment and modifications 1 to 6 are arranged so that the pipe axis gently slopes downward from the inlet 13A to the outlet 13B. , and the inflow port 13A and the outflow port 13B may be obliquely arranged with respect to the tube axis (see, for example, the inflow port 13A in FIG. 19A).

In this way, when the drain piping devices 11 and 51 are arranged at a predetermined angle, the end face of the outflow port 13B becomes vertical (see FIG. 19), so that the drain piping devices 11 and 51 are tilted at a predetermined angle. When the base is installed with a , the outer surface of the foundation and the end surface of the outlet 13B can be aligned.

Further, in Example 2 and Modifications 2 to 6, a form in which the drainage path length dimension L54 can be changed by connecting the connecting pipe 51B to the main pipe 51A and further engaging another connecting pipe 51B is illustrated. However, the present invention is not limited to this, and regardless of the type of the main pipe 51A or the connecting pipe 51B, by connecting (connecting) a plurality of pipe bodies in the pipe axial direction, the drainage path length dimension L54 may be changeable. That is, even if it is possible to change the drainage path length L54 by connecting (connecting) a plurality of connecting pipes 51B in the pipe axial direction without using the main pipe 51A according to the thickness dimension of the rising portion 3. good.

[Action/effect]
As described above, the drainage piping device 11 in the first embodiment of the present invention is a drainage piping device 11 that communicates the space surrounded by the rising portion 3 of the basic concrete 1 of the building with the outside of the basic concrete 1. Depending on the thickness of the rising portion 3, between the openings at both ends of the drain piping device 11, that is, from the inlet 13A, which is one end opening of the inner sleeve tube 11B, to the outlet opening, which is the other end opening of the outer sleeve tube 11A. The length up to 13B can be changed. By doing so, it is possible to change the length between the openings at both ends of the drainage pipe device 11 according to the thickness of the upright portion 3 of the foundation, so it is possible to prepare a plurality of types of drainage pipes with different lengths. In addition, it is possible to correspond to the rising portions of foundations having different thicknesses.

Moreover, it is composed of a plurality of tubular bodies (outer sleeve tube 11A and inner sleeve tube 11B) that overlap each other, and the overlapping range (overlapping dimension L3) of the outer sleeve tube 11A and the inner sleeve tube 11B can be changed. In this way, by changing the overlapping range of the inner sleeve tube 11B with the outer sleeve tube 11A, the length from the inlet 13A to the outlet 13B can be changed.

By sliding the inner sleeve tube 11B, which is the other tube, with respect to the outer sleeve tube 11A, which is one tube, the overlapping range (overlapping dimension L3) can be changed with a simple operation. can be changed.

Further, a protruding portion 32 is provided as a locking portion capable of locking the outer sleeve tube 11A and the inner sleeve pipe 11B, and the locking portion includes a plurality of protruding portions 32 with different overlapping ranges. In this way, by locking the outer sleeve tube 11A and the inner sleeve tube 11B with the protruding portion 32 corresponding to the thickness of the rising portion 3, the positional deviation of the outer sleeve tube 11A and the inner sleeve tube 11B can be prevented. can be prevented.

In addition, the protrusion 32 has a locking force in the sliding direction that increases the overlapping range (overlapping dimension L3), and is larger than a locking force in the sliding direction that reduces the overlapping range. It is possible to prevent the length from becoming shorter than the set length.

Further, in the drain piping device 11 of Modification 1, the inner sleeve pipe 11B is screwed to the outer sleeve pipe 11A, and the inner sleeve pipe 11B is rotated with respect to the outer sleeve pipe 11A to overlap the range (polymerization By being able to change the dimension L3), it is possible to change the overlapping range with a simple operation.

Further, by providing the flange portion 33 as a finger hook portion at the end portion of the inner sleeve pipe 11B that does not overlap with the outer sleeve pipe 11A, it becomes easy to change the overlapping range.

Further, the water drain piping device 51 of the second embodiment is a water drain piping device 51 that communicates between the space surrounded by the rising portion 3 of the basic concrete 1 of the building and the outside of the basic concrete 1, and has a main pipe 51A. and a connecting pipe 51B, and depending on the thickness of the rising portion 3, the pipes are connected to each other, for example, the main pipe 51A and the connecting pipe 51B, or the connecting pipes 51B are connected to each other. By doing so, the length from the inflow port 13A to the outflow port 13B can be changed. By doing so, it is possible to change the length between the openings at both ends of the drainage pipe device 51 according to the thickness of the upright portion 3 of the foundation, so it is possible to prepare a plurality of types of drainage pipes with different lengths. In addition, it is possible to correspond to the rising portions of foundations having different thicknesses.

In addition, the plurality of tubular bodies includes the main tube 51A and the connecting tube 51B, and the connecting tube 51B can be connected to the main tube 51A, and the connecting tube 51B can be connected to the connecting tube 51B. Since it is possible, it is possible to not only connect the connecting pipe 51B to the main pipe 51A, but also connect the connecting pipe 51B to the connecting pipe 51B, so that it is possible to correspond to three or more types of lengths. .

By providing termite-proof sheets 11C and 11C' as elastic members or non-vulcanized members on the outer peripheral surfaces of the outer sleeve pipe 11A and the main pipe 51A, the concrete of the rising portion 3 and the outer sleeve pipe 11A and the main pipe 51A There is no gap between them, and it is possible to prevent insects such as termites, dust, garbage, etc. from entering through the gaps.

In addition, the anti-termite sheets 11C and 11C' contain an anti-termite agent to enhance the anti-termite effect against termites.

In addition, the anti-termite sheets 11C and 11C' are provided at least on the outer peripheral surface of the outer sleeve tube 11A and the main tube 51A at the end on the side of the outflow port 13B (external side end) or near the end on the side of the outflow port 13B (external side). By being provided so as to cover the end portion), it is possible to effectively prevent the entry of pests such as termites, dust, garbage, and the like.

Also, the termite-proof sheets 11C and 11C' include a termite-proof sheet 11C' as a first member and an termite-proof sheet 11C having a hardness lower than that of the termite-proof sheet 11C. An anti-termite sheet 11C' is provided on the outer peripheral surface on the side of the outflow port 13B (external side edge) or near the end on the side of the outflow port 13B (near the edge on the external side). By providing the termite-proof sheet 11C with a relatively high hardness on the inlet 13A side (inside), it is possible to prevent the outflow of the termite-proof sheet, while the termite-proof sheet 11C' is relatively closer to the inlet 13A side than the termite-proof sheet 11C'. By providing the anti-termite sheet 11C having a low hardness at the bottom, it is possible to reliably prevent the formation of gaps between the foundation concrete and the outer sleeve pipe 11A or the main pipe 51A.

In addition, by attaching a cover member 12 as a closing member for closing the outlet 13B to the outlet 13B, it is possible to prevent insects, small animals, dust, garbage, etc. from entering from the outlet 13B.

Further, the lid member 12 has a flange portion 41A on the outer peripheral edge portion, and the flange portion 41A is formed with an inclined surface 41B that is inclined toward the mounting direction to the outflow port 13B so as to be thinner from the center side to the outer edge side. As a result, the boundary between the lid member 12 and the outer surface of the foundation or the decorative surface when decorated becomes inconspicuous, and the design when the lid member 12 is attached to the outflow port 13B is improved. do.

In addition, since the outer diameter of the flange portion 41A is larger than the outer diameter of the outlet port 13B, when the cover member 12 is attached to the outlet port 13B, the outer surface of the base around the outlet port 13B is formed by the flange portion 41A. Since it overlaps with the decorative surface when the decorative treatment is applied, the boundary between the outflow port 13B and the outer surface of the foundation or the decorative surface when the decorative treatment is applied is hidden, so that the design is improved.

In addition, since the cover member 12 is provided with a male threaded portion 62 as a threaded portion that is screwed into a female threaded portion 61 formed on the inner peripheral surface of the pipe, the closing of the outflow port 13B by the cover member 12 can be easily released. You can prevent it from slipping.

In addition, the cover member 12 is provided with a seal member 43 that is in close contact with the inner peripheral surface of the pipe. By closely contacting the inner peripheral surface of the pipe over a predetermined range on the side of 13B (see FIG. 13), the outer surface of the foundation is decorated, and the thickness from the outlet 13B to the outer surface of the foundation increases. Even if the male screw portion 62 cannot be screwed all the way in, the sealing member 43 can be brought into close contact with the inner peripheral surface of the pipe.

As described above, Embodiments 1 and 2 and Modifications 1 to 7 of the present invention have been described with reference to the drawings. Any additions are included in the invention.

1 Foundation concrete 2 Base concrete part 3 Rising part 10 Underfloor drainage structure 11 Drainage piping device 11A Outer sleeve pipe (pipe body)
11B Inner sleeve tube (tubular body)
12 Lid member 13A Inflow port 13B Outflow port 51 Drain piping device 51A Main pipe (tubular body)
51B connecting pipe (pipe body)

Claims (3)

A drain piping device that communicates a space surrounded by the upright portion of a building foundation with the outside of the foundation,
A drain pipe device, wherein a length between openings at both ends of the drain pipe device can be changed according to a thickness of the rising portion. Consisting of a plurality of tubular bodies that are polymerized with each other,
The drain pipe device according to claim 1, wherein the length between the openings at both ends of the drain pipe device can be changed by changing the overlapping range of the tubular bodies. consists of multiple tubes,
The drainage piping device according to claim 1, wherein the length between the openings at both ends of the drainage piping device can be changed by connecting the tubular bodies.

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