Piping installation

Abstract

To provide a piping facility capable of making rainwater flowing down on a surface of an upper pipe body on a floor slab flow into a lower pipe body under the floor slab, and capable of restraining the rainwater from leaking to a lower story via the floor slab.SOLUTION: A pipe connecting body 4 buried in a floor slab 103 is composed of an adjusting connecting cylindrical body 6 for fitting a lower end part of an upper pipe body 2 via a water passing clearance 12 and a connecting base body 7 for fitting an upper end part of a lower pipe body 3, and the lower end part of the upper pipe body 2 is closely fitted to the adjusting connecting cylindrical body 6 by a sealant 32 arranged in the water passing clearance 12. The length of the adjusting connection cylindrical body 6 is adjusted based on the thickness of the floor slab 103, and the connection base body 7 is provided with a fitting cylindrical part 21 for fitting the lower part of the adjusting connection cylindrical body 6, a lower fitting cylindrical part 22 for fitting the upper end part of the lower pipe body 3, and a funnel part 23 for making rainwater flowing in from the fitting cylindrical part 21 flow down to the inside of the lower pipe body 3.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a piping system that penetrates an outdoor floor slab and drains rainwater downward. [Background technology]

[0002] Generally, buildings such as multi-story houses are provided with drainage pipes on their roofs and balconies to drain rainwater, and the drainage pipes penetrate the floor slabs of the roofs and balconies (see, for example, Patent Document 1). Specifically, as shown in FIG. 6, a pipe 91 (composing the aforementioned drainage pipe) that drains rainwater collected from a rain gutter is attached along a wall 104 of a building 101. The pipe 91 is then inserted into a through-hole 92 that vertically penetrates a floor slab 103 of a balcony 102 provided in the building 101, and is extended to a balcony on a lower floor. The installation in which the pipe 91 is installed drains rainwater down into a drainage ditch or the like on the ground. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 7-35887 (see Figures 2 and 4) Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, on outdoor balconies and the like, rainwater that falls during rainfall may flow down the outer surface of the pipe body arranged on the balcony. In the case of the conventional configuration described above, rainwater that flows down the outer surface of the pipe body 91 in this way flows through the through-holes 92 in the floor slab 103 to the lower floors (Figure 6). Some multi-story houses and the like described above have bicycle parking areas or inner balconies directly below the rooftop or outdoor balconies. In these cases, there is a risk that rainwater that flows down the outer surface of the pipe body and passes through the floor slab may wet or soil items placed on the bicycles or inner balconies (e.g., washing machines, laundry, etc.).

[0005] The present invention proposes a piping system that can cause rainwater running along the outer surface of a pipe placed on a floor slab to flow into the interior of a pipe placed below the floor slab, thereby preventing the rainwater from passing through the floor slab and leaking to lower floors. [Means for solving the problem]

[0006] The present invention comprises an upper pipe body arranged on an outdoor floor slab, a lower pipe body arranged below the floor slab, and a pipe connector that is buried in the floor slab and connects the lower end of the upper pipe body to the upper end of the lower pipe body, thereby communicating the upper pipe body with the lower pipe body. The pipe connector is composed of a cylindrical adjustable connecting cylinder that opens above the floor slab and has a length adjusted based on the thickness of the floor slab, and a connecting base that opens below the floor slab and to which the adjustable connecting cylinder part is connected. The adjustable connecting cylinder is an upper fitting into which the lower end of the upper pipe is fitted via a water-passing gap. This piping equipment is characterized in that it has an inlet portion, the connecting base having a cylindrical fitting portion that opens upward and into which the lower part of the adjusting connecting cylinder is fitted, a lower fitting inlet portion that is connected to the upper fitting inlet of the adjusting connecting cylinder fitted into the fitting cylinder portion and into which the upper end of the lower pipe body is fitted, and a guide water channel that is provided between the fitting cylinder portion and the lower fitting inlet portion and that allows water that flows in from the fitting cylinder portion to flow down to the lower pipe body fitted into the lower fitting inlet portion, and further, the lower end of the upper pipe body is tightly fitted into the upper fitting inlet portion of the adjusting connecting cylinder via a sealing material arranged in the water passage gap.

[0007] With this configuration, even if rainwater that flows down the outer surface of the upper pipe body during rainfall flows into the inside of the pipe connector through the water-passing gap, the rainwater can be made to flow down into the inside of the lower pipe body, thereby preventing items placed in bicycle parking areas under the floor slab or on inner balconies, etc. from getting wet or dirty due to the rainwater. Here, the sealing material may crack or develop a very small gap between the upper pipe body and the adjustable connecting tube due to poor hardening or deterioration over time. Similarly, cracks and gaps may occur when a person comes into contact with the upper pipe body or the lower pipe body, or when the outdoor upper pipe body (and lower pipe body) is exposed to a storm. Earthquakes can also cause similar cracks. Because such cracks are sometimes difficult to see, water can pass through even when the sealing material appears to be tightly fitted. In contrast, the configuration of the present invention allows water that penetrates through cracks in the sealing material to flow down to the lower pipe body. This can prevent rainwater that runs along the outer surface of the upper pipe body during rainfall from passing through the floor slab and leaking below the floor slab.

[0008] Furthermore, the present invention is configured such that the pipe connector is composed of two components, an adjustable connecting cylinder and a connecting base, and the length of the adjustable connecting cylinder is adjusted based on the thickness of the floor slab. That is, during construction, the adjustable connecting cylinder is cut based on the thickness of the floor slab to adjust its length, and the length-adjusted adjustable connecting cylinder is inserted into the fitting cylindrical portion of the connecting base to form the pipe connector. In this way, the pipe connector of the present invention can be appropriately adapted to floor slabs of various thicknesses, making it extremely versatile. [Effects of the Invention]

[0009] According to the piping system of the present invention, rainwater running along the outer surface of the upper pipe during rainfall can be caused to flow down into the lower pipe by the pipe connector, preventing the rainwater from passing through the floor slab and leaking below the floor slab. This prevents bicycles in the bicycle parking area below the floor slab and objects installed on the inner balcony from getting wet or dirty due to rainwater flowing down the outer surface of the upper pipe. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 2 is a cross-sectional view showing the installed state of the piping equipment 1 of the present embodiment. [Figure 2] 10 is an enlarged cross-sectional view showing a pipe connector 4 embedded in a floor slab 103. FIG. [Figure 3] FIG. 3 is an exploded cross-sectional view of a pipe connector 4. [Figure 4] 10 is a cross-sectional view showing a state in which the pipe connector 4 is embedded in a floor slab 103. FIG. [Figure 5] FIG. 10 is a cross-sectional view showing the construction state of a piping installation 1 of another example. [Figure 6] FIG. 10 is a cross-sectional view showing the state of construction of a pipe body 91 having a conventional configuration. DETAILED DESCRIPTION OF THE INVENTION

[0011] An embodiment of the present invention will be described with reference to the accompanying drawings. The piping equipment 1 of this embodiment is disposed on a balcony 102 of a building 101 such as an apartment building or office building, and comprises an upper pipe body 2 installed on a floor slab 103 that forms the floor of the balcony 102, a lower pipe body 3 installed below the floor slab 103, and a pipe connector 4 buried in the floor slab 103, with the upper pipe body 2 and the lower pipe body 3 being connected by the pipe connector 4. Here, the upper pipe body 2 and the lower pipe body 3 form a vertical pipe for draining water from the upper floors of the building 101 to the lower floors, and are attached along a wall 104 of the building 101.

[0012] In this embodiment, the upper tubular body 2, the lower tubular body 3, and the pipe connector 4 are made of a hard synthetic resin such as polypropylene resin or vinyl chloride resin.

[0013] As shown in Figures 2 to 4, the pipe connector 4 is composed of two members: an adjustable connecting cylinder 6 and a connecting base 7. The adjustable connecting cylinder 6 is cylindrical and opens in the vertical direction, and the lower end of the upper pipe body 2 is fitted into an upper fitting inlet portion 11 that opens upward. The inner diameter of the adjustable connecting cylinder 6 is set to a diameter dimension larger than the outer diameter of the lower end of the upper pipe body 2, and when the lower end of the upper pipe body 2 is fitted into the upper fitting inlet portion 11, a gap (hereinafter referred to as a water-passing gap) 12 is formed between the outer peripheral surface of the lower end and the inner peripheral surface of the upper fitting inlet portion 11.

[0014] The connecting base 7 is formed by concentrically and integrally forming an upwardly opening cylindrical fitting portion 21, a downwardly opening cylindrical lower fitting portion 22, and a substantially conical cylindrical funnel portion 23 provided between the fitting portion 21 and the lower fitting portion 22, and the fitting portion 21 and the lower fitting portion 22 are connected via the funnel portion 23.

[0015] The fitting tubular portion 21 is provided so that the lower portion of the adjustable connecting tubular body 6 can be fitted into it from above, and is formed to be shorter than the length (vertical length) of the adjustable connecting tubular body 6. As a result, when the adjustable connecting tubular body 6 is fitted into the fitting tubular portion 21 (pipe connector 4), the upper end of the adjustable connecting tubular body 6 is located higher than the upper end of the fitting tubular portion 21. The inner circumferential surface of the fitting tubular portion 21 is formed in a tapered shape that slopes slightly outward from the lower end to the upper end. Here, the inner diameter of the fitting tubular portion 21 at the upper end is slightly larger than the outer diameter of the adjustable connecting tubular body 6, and the inner diameter at the lower end of the fitting tubular portion 21 is equal to or slightly smaller than the outer diameter of the adjustable connecting tubular body 6. According to this configuration, the adjustable connecting cylinder 6 can be easily fitted into the fitting cylinder portion 21, and the fitting can be performed in a state where it is positioned and fixed concentrically.

[0016] The funnel portion 23 has an inlet 25 at its upper end, the inlet 25 having an inner diameter (aperture) equal to or slightly smaller than the inner diameter of the adjustable connecting cylinder 6, and an outlet 26 at its lower end, the inlet 25 having an inner diameter (aperture) equal to or slightly smaller than the inner diameter of the lower pipe 3. Here, the inner diameter of the inlet 25 is larger than the inner diameter of the outlet 26, and the inner peripheral surface of the funnel portion 23 is tapered, sloping outward from the outlet 26 toward the inlet 25.

[0017] The lower fitting cylindrical portion 22 is provided so that the upper end of the lower tubular body 3 can be fitted into it from below, and the inner circumferential surface of the lower fitting cylindrical portion 22 is tapered, sloping slightly outward from the upper end to the lower end. Here, the inner circumferential surface of the lower fitting cylindrical portion 22 is tapered so that the inner diameter at the lower end of the lower fitting cylindrical portion 22 is slightly larger than the outer diameter of the lower tubular body 3, and the inner diameter at the upper end of the lower fitting cylindrical portion 22 is equal to or slightly smaller than the outer diameter of the lower tubular body 3. With this configuration, the upper end of the lower tubular body 3 can be easily fitted into the lower fitting cylindrical portion 22, and the fitting allows the upper end of the lower tubular body 3 to be fitted in a concentrically positioned and fixed state.

[0018] In this embodiment, the fitting cylindrical portion 21 and the funnel portion 23 are connected via an annular support portion 28 that seats the lower end of the adjusting connecting cylindrical body 6 fitted into the fitting cylindrical portion 21. The funnel portion 23 and the lower fitting cylindrical portion 22 are also connected via an annular abutment portion 29 that abuts the upper end of the lower pipe body 3 fitted into the lower fitting cylindrical portion 22.

[0019] The pipe connector 4 is embedded in the floor slab 103 when constructing the balcony 102. Specifically, a positioning plate (not shown) is attached to a predetermined position of the formwork that forms the bottom surface of the floor slab 103, and a cylindrical spacer 31 is positioned and placed on the formwork using the plate. The lower insertion tubular portion 22 of the pipe connector 4 is then inserted from above the spacer 31, and the upper end of the spacer 31 supports the support portion 28 of the pipe connector 4. Furthermore, the upper end opening of the adjustable connecting cylinder 6 of the pipe connector 4 is closed with a curing lid (not shown). This curing lid is connected to the plate with long bolts. Here, the adjustable connecting cylinder 6 of the pipe connector 4 is adjusted in the vertical direction by cutting the adjustable connecting cylinder 6 so that the upper end 6a (see FIG. 4) of the adjustable connecting cylinder 6 is flush with the upper surface of the floor slab 103 when the adjustable connecting cylinder 6 is fitted into the connecting base 7. With the pipe connectors 4 thus placed in the formwork, concrete is poured, and after curing, the formwork, the plate, and the curing cover are removed to form a floor slab 103 with the pipe connectors 4 embedded in it, as shown in Figure 4. In this embodiment, the spacers 31 are embedded in the floor slab 103 together with the pipe connectors 4.

[0020] 2, the upper end of the lower pipe 3 is fitted from below into the lower fitting cylindrical portion 22 of the pipe connector 4 embedded in the floor slab 103, and the lower end of the upper pipe 2 is fitted from above into the upper fitting inlet portion 11 of the adjustable connecting cylindrical body 6. Then, a sealant 32 is filled into the water-passing gap 12 generated between the inner peripheral surface of the upper fitting inlet portion 11 and the outer peripheral surface of the upper pipe 2, and the upper end of the upper pipe 2 is tightly fitted into the upper fitting inlet portion 11 by the sealant 32.

[0021] Here, a caulking material is used as the sealing material 32, and upon hardening, it tightly fits the upper end of the upper pipe body 2 and the upper fitting opening 11. In this embodiment, either a caulking material with excellent weather resistance but low resistance to ultraviolet light (hereinafter referred to as weak ultraviolet resistance) or a caulking material that can be painted to become UV resistant but has low durability and adhesion (hereinafter referred to as weak durability) is used. Both have their advantages and disadvantages. Therefore, when a weak ultraviolet resistance caulking material is used, additives are easily degraded by ultraviolet light, causing cracking and thinning. On the other hand, when a weak durability caulking material is used, it is prone to deterioration over time, and its weak adhesion can easily cause very small gaps between the outer surface of the upper pipe body 2 and the inner surface of the upper fitting opening 11. Furthermore, both caulking materials are prone to cracking due to insufficient hardening. When cracks or other imperfections occur in the sealing material 32, water can penetrate through the cracks, but the intrusion of other debris and other impurities is prevented.

[0022] As described above, the piping equipment 1 of this embodiment is configured such that the lower end of the upper pipe 2 is connected to the upper fitting inlet portion 11 of the pipe connector 4 embedded in the floor slab 103, and the upper end of the lower pipe 3 is connected to the lower fitting tubular portion 22 of the pipe connector 4, so that water flowing down inside the upper pipe 2 flows into the inside of the lower pipe 3 through the funnel portion 23. In this embodiment, the lower end of the upper pipe 2 is fitted into the upper fitting inlet portion 11 of the pipe connector 4 via the water passage gap 12, and the lower end of the upper pipe 2 is tightly fitted into the upper fitting inlet portion 11 by the sealant 32 filled in the water passage gap 12. Here, as described above, the sealant 32 is prone to cracks, etc., and because these cracks, etc. are difficult to visually recognize at a glance, the cracked state is easily left unattended. Even in such a state, according to the configuration of this embodiment, even if rainwater seeps into the inside of the pipe connector 4 through cracks or the like that occur in the sealing material 32, the rainwater can be made to flow down to the lower pipe body 3. Note that the sealing material 32 is prone to cracks or the like when the upper pipe body 2 or the lower pipe body 3 receives a physical shock (when a person comes into contact with the sealing material 32, when it is subjected to a rainstorm, when an earthquake occurs, etc.). Therefore, with the configuration of this embodiment, even if rainwater that falls on the balcony 102 during rainfall flows down the outer surface of the upper pipe body 2 and enters the inside of the pipe connector 4, the rainwater can flow into the inside of the lower pipe body 3, preventing the rainwater from leaking into the bicycle parking area or inner balcony provided on the floor below the balcony 102 and preventing the bicycles and objects installed on the inner balcony from getting wet or dirty by the rainwater. In addition, the sealant 32 prevents other debris from entering, preventing the lower pipe body 3 from becoming clogged with debris.

[0023] Furthermore, the pipe connector 4 of this embodiment is composed of two members, the adjustable connecting cylinder 6 and the connecting base 7, and the adjustable connecting cylinder 6 can be cut according to the thickness of the floor slab 103 to adjust the length of the adjustable connecting cylinder 6. The length of the adjustable connecting cylinder 6 can be adjusted at the construction site. As a result, the configuration of this embodiment can appropriately accommodate floor slabs 103 of various thicknesses. Furthermore, the length of the adjustable connecting cylinder 6 can be adjusted at the construction site, which has the excellent advantages of being highly versatile and reducing the cost and time required for construction.

[0024] In the above-described embodiment, the funnel portion 23 of the connecting base 7 constitutes the guide waterway according to the present invention. The lower fitting cylindrical portion 22 of the connecting base 7 corresponds to the lower fitting inlet portion according to the present invention.

[0025] The present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present invention. For example, in the embodiment, the device is installed on an outdoor balcony, but the present invention is not limited to this and it can be installed on an outdoor veranda, rooftop, or the like.

[0026] In the above-described embodiment, the length of the adjustable connecting cylinder that constitutes the pipe connector is adjusted so that its upper end is flush with the upper surface of the floor slab, but this is not limited to this, and the length adjustment of the adjustable connecting cylinder can be changed as appropriate. For example, as shown in FIG. 5, the length of the adjustable connecting cylinder 6 can be adjusted so that the upper end 6a of the adjustable connecting cylinder 6 protrudes above the upper surface of the floor slab 103. [Explanation of symbols]

[0027] 1. Piping equipment 2 Upper tube 3 Lower tube 4 pipe connection body 6 Adjustment connection cylinder 7 Connecting base 11 Upper fitting part 12 Water flow gap 21 Fitting cylinder 22 Lower fitting cylinder part (lower fitting opening part) 23 Funnel section (guide channel) 25 entrance 26 Outlet 28 Support part 29 Contact part 31 Spacer 32 Sealing material 91 Body 92 Through hole Building 101 102 Balcony 103 Floor slab 104 Wall

Claims

[Claim 1] an upper pipe body disposed on an outdoor floor slab; A lower pipe body disposed under the floor slab; a pipe connector that is embedded in the floor slab and connects the lower end of the upper pipe body to the upper end of the lower pipe body, thereby communicating the upper pipe body with the lower pipe body; The device is provided with: The pipe connector is A cylindrical adjustable connecting cylinder that opens above the floor slab and has a length adjusted based on the thickness of the floor slab; a connecting base that opens downwardly from the floor slab and to which the adjustable connecting tube portion is connected; It is composed of the adjustable connecting cylinder has an upper fitting opening into which the lower end of the upper pipe body is fitted via a water-passing gap; The linking substrate is a cylindrical fitting portion that is open upward and into which the lower portion of the adjusting and connecting cylinder is fitted; a lower fitting opening portion that communicates with the upper fitting opening portion of the adjusting and connecting cylinder that is fitted into the fitting cylinder portion, and into which the upper end of the lower pipe body is fitted; a guide waterway provided between the fitting cylindrical portion and the lower fitting inlet portion, for allowing water flowing in from the fitting cylindrical portion to flow down to the lower pipe body fitted into the lower fitting inlet portion; Equipped with Furthermore, the piping equipment is characterized in that the lower end of the upper pipe body is tightly fitted into the upper fitting inlet portion of the adjustable connecting cylinder body via a sealing material arranged in the water passage gap.

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