Fittings, drainage systems, and buildings

Abstract

To provide a joint.SOLUTION: A joint is installed in an open hole formed on a floor slab of a building and has an aggregate part having a vertical pipe connection part to be connected to a vertical pipe extending from the upper floor and a horizontal pipe connection part to be connected to a horizontal pipe, an upper cylindrical part that connects the vertical pipe connection part and the aggregate part and has a larger inner diameter than that of the vertical pipe, and a lower connection part to be connected to the vertical pipe extending from the lower floor. At least any of the upper cylindrical part, the aggregate part, and the lower connection part is formed of resin. A first rotary member is disposed in either the upper cylindrical part or the aggregate part. A second rotary member is disposed in the lower connection part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a joint. [Background technology]

[0002] A resin drain pipe joint has been known in the past, as described in Patent Document 1. This drain pipe joint is installed on each floor of a building, penetrating the floor slab separating the upper and lower floors, and connects the drain pipe on the upper floor with the drain pipe on the lower floor in a watertight manner. This drain pipe joint has an upper body made of resin and equipped with a socket to which the drain pipe of the upper floor is connected, an upper end connection part that is embedded in the floor slab and connected to the lower end of the upper body, and a lower body that protrudes downward from the ceiling surface of the floor slab and equipped with a lower end connection part to which the drain pipe of the lower floor is connected.The above-mentioned drain pipe joint also has a resin interior member that can be fixed inside the lower body and is equipped with vanes that guide the drainage water flowing down. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-58849 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned drainage pipe joints are used in high-rise buildings, etc., but the lower the floors in a high-rise building, the greater the amount of water collected from the drainage water from each floor, so the joints are required to have high drainage performance capable of discharging large amounts of wastewater, such as 7 L / s or more.In addition, the joints are required to not break the water seal even when a large amount of wastewater is discharged.

[0005] While cast iron joints, which are easy to manufacture, have been known to have the high drainage performance described above, it has been difficult to provide resin joints with high drainage performance due to size restrictions imposed by injection molding and the inability to mold them into complex shapes.

[0006] In view of the above circumstances, an object of the present invention is to provide a joint having high drainage performance. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention proposes the following aspects. "1" The joint of this form is a joint to be installed in a through hole provided in the floor slab of a building, and comprises a vertical pipe connection portion to be connected to a vertical pipe extending from an upper floor, a collecting portion having a horizontal pipe connection portion to be connected to a horizontal pipe, an upper tubular portion that connects the vertical pipe connection portion and the collecting portion and has an inner diameter larger than the inner diameter of the vertical pipe, and a lower connecting portion that is connected to a vertical pipe extending from a lower floor, and is characterized in that at least one of the upper tubular portion, the collecting portion, and the lower connecting portion is made of resin, and a first swivel member is provided inside either the upper tubular portion or the collecting portion, and a second swivel member is provided inside the lower connecting portion.

[0008] According to this embodiment, the upper cylindrical portion has an inner diameter larger than the inner diameter of the vertical pipe extending from the upper floor, so the internal volume of the portion where wastewater flows from the vertical pipe to the joint is large, and the portion from the vertical pipe to the joint has excellent drainage capacity.

[0009] [2] In the joint according to this embodiment, a configuration can be adopted in which a swivel member is provided inside each of the upper tubular portion and the collecting portion.

[0010] A portion of the wastewater flowing down from the vertical pipe can be received by the swirling member and swirled to generate a swirling flow. This portion of the wastewater can be made into a swirling flow, straightened, and then guided downward. For example, if the swirling member guides the wastewater downward while swirling it, the reflected flow of the wastewater can be prevented from flowing back into the horizontal pipe. This results in the joint having excellent drainage performance.

[0011] "3" In the joint of this embodiment, the upper part of the upper tubular portion can be a socket into which the lower part of the vertical pipe connection portion is inserted, and the lower part of the upper tubular portion can be a spigot into which the upper part of the collection portion is inserted.

[0012] By fitting the vertical pipe connector into the socket of the upper tubular part, the upper tubular part and the vertical pipe connector can be joined together, and the vertical pipe can be joined to the upper tubular part. By fitting the lower part of the upper tubular part as a spigot into the upper part of the collecting part, the upper tubular part can be joined together with the collecting part, and drainage from the vertical pipe can be directed to the upper tubular part and collecting part, which have a larger internal volume.

[0013] [4] In the joint according to this embodiment, a configuration can be adopted in which a first sound-insulating cover covering the outer surface of the upper tubular portion and a second sound-insulating cover covering the outer surface of the collecting portion are provided.

[0014] By covering the outer surface of the upper tubular section with a first sound-insulating cover and the outer surface of the collecting section with a second sound-insulating cover, a structure can be achieved that has excellent sound insulation and is less likely to leak drainage noise to the outside, even when wastewater from the vertical pipe flows into the upper tubular section or collecting section. Since the first sound insulating cover and the second sound insulating cover are provided separately, they can be tightened and attached separately. Because they can be tightened separately, the position of each sound insulating cover can be finely adjusted, preventing deformation and deflection of the sound insulating covers.

[0015] [5] In the pipe joint according to this embodiment, a configuration can be adopted in which the first sound-insulating cover and the second sound-insulating cover are provided so that their end faces face each other.

[0016] By arranging the end faces of the first sound-insulating cover and the second sound-insulating cover facing each other, it is possible to eliminate the overlapping portion between the first sound-insulating cover and the second sound-insulating cover, thereby realizing a configuration with fewer portions protruding from the outer surface of the joint.

[0017] [6] In the pipe joint according to this embodiment, a configuration can be adopted in which a sound insulating cover is provided to cover the outer surfaces of the upper tubular portion and the collecting portion.

[0018] By providing the first sound insulating cover and the second sound insulating cover as one common sound insulating cover, it is possible to provide a configuration in which the outer surfaces of the upper tubular portion and the collecting portion are covered by a seamless sound insulating cover.

[0019] [7] In the pipe joint according to this embodiment, a configuration can be adopted in which the collecting portion and the lower connecting portion are connected together and an intermediate portion having the same inner diameter from one end to the other end is provided.

[0020] If an intermediate section with a larger internal volume is disposed below the collecting section, the wastewater that has passed through the collecting section can be introduced into the intermediate section with a larger internal volume and flow therein, thereby further improving the drainage performance. If a large amount of wastewater flows into the collection section from the vertical drainage pipes on the upper floors or the horizontal pipes in total, the wastewater can be smoothly guided to the intermediate section and then to the vertical drainage pipes on the lower floors. [Effects of the Invention]

[0021] According to this form of fitting, since it has an upper tubular portion with an inner diameter larger than the inner diameter of the vertical pipe extending from the upper floor, the internal volume of the part where wastewater flows from the vertical pipe into the fitting is large, and a fitting can be provided with excellent drainage capacity in the part from the vertical pipe to the fitting. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a cross-sectional view showing a structure in which a joint according to a first embodiment of the present invention is installed in a floor slab. [Figure 2] FIG. 2 is a cross-sectional view showing an example of a sound-insulating cover made of an inner layer material and an outer layer material that is applied to the joint. [Figure 3] 10 is a cross-sectional view showing another example of a sound-insulating cover made of an inner layer material, an intermediate layer material, and an outer layer material that can be applied to the joint. FIG. [Figure 4] FIG. 10 is a perspective view showing a second example of a swivel member applied to a lower part of the joint. [Figure 5] FIG. 10 is a perspective view showing a third example of a swivel member applied to the lower part of the joint. [Figure 6] FIG. 4 is a cross-sectional view showing a joint according to a second embodiment of the present invention. [Figure 7] FIG. 10 is a cross-sectional view showing another example of a swivel member applied to the upper part of the joint. [Figure 8] FIG. 10 is a cross-sectional view showing a joint according to a third embodiment of the present invention. [Figure 9] FIG. 10 is a cross-sectional view showing a joint according to a fourth embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view showing another example of a swivel member applied to the upper part of the joint. [Figure 11] FIG. 10 is a cross-sectional view showing a joint according to a fifth embodiment of the present invention. [Figure 12] FIG. 10 is a cross-sectional view showing a joint according to a sixth embodiment of the present invention. [Figure 13] FIG. 10 is a cross-sectional view showing a joint according to a seventh embodiment of the present invention. [Figure 14] FIG. 13 is a cross-sectional view showing a joint according to an eighth embodiment of the present invention. [Figure 15] FIG. 13 is a cross-sectional view showing a joint according to a ninth embodiment of the present invention. [Figure 16] FIG. 19 is a cross-sectional view showing a joint according to a tenth embodiment of the present invention. [Figure 17] FIG. 20 is a cross-sectional view showing a joint according to an eleventh embodiment of the present invention. [Figure 18] FIG. 22 is a cross-sectional view showing a joint according to a twelfth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] A joint according to a first embodiment of the present invention will be described below with reference to Figures 1 to 5. The joint 1 according to this embodiment is a drainage pipe joint that is applied to drainage equipment 2 in apartment buildings such as condominiums, office buildings, and the like. As shown in Figure 1, the drainage equipment 2 has joints 1 installed on each floor, vertically penetrating the floor slab S that separates the upper and lower floors of a building such as an apartment building or a building. Also provided are vertical drainage pipes 5 made of resin that connect the joints 1 on each floor, and horizontal pipes (horizontal drainage branch pipes) 6 made of resin that are piped on the floor of each floor and connected to the joints 1 on each floor. The drainage equipment 2 is constructed by stacking the drainage vertical pipe 5 on the lower floor into the upper receiving port of the joint on the lower floor, inserting the lower end of the joint 1 on the upper floor into the upper spigot of the drainage vertical pipe 5 to connect it, and then connecting the lower end of the drainage vertical pipe 5 extending to the upper floor to the upper spigot of the joint 1.

[0024] The joint 1 comprises a collecting section 12 having a cylindrical vertical pipe connection section 10 connected to a vertical drainage pipe 5 extending to an upper floor, and a cylindrical horizontal pipe connection section 11 connected to a horizontal pipe 6. The joint 1 also comprises an upper cylindrical section 13 that connects the vertical pipe connection section 10 and the collecting section 12 and has an inner diameter larger than the inner diameter of the vertical drainage pipe 5, and a lower connecting section 15 that is connected to the vertical drainage pipe 5 extending to a lower floor. In joint 1, at least one of upper tubular portion 13, collecting portion 12, and lower connecting portion 15 is made of a molded resin body. A first swirl vane (first swirl member) 16 is provided inside upper tubular portion 13, and a second swirl vane (second swirl member) 17 and a third swirl vane (third swirl member) 18 are provided inside lower connecting portion 15.

[0025] The joint 1 of this embodiment is installed, for example, at a portion where a through-hole 19 that passes through a floor slab S in the vertical direction is formed, as shown in FIG. The upper tubular portion 13 is the portion to which the lower end spigot of the vertical drainage pipe 5 extending from the upper floor is connected via an upper receiving member 20. The upper receiving member 20 has a cylindrical peripheral wall portion 21, with an outer flange portion 22 formed on the outer periphery of this peripheral wall portion 21 and an inner flange portion 23 formed on the inner periphery of the lower end of the peripheral wall portion 21. The upper receiving member 20 is fitted to the upper tubular portion 13 by inserting the lower side of the peripheral wall portion 21 into the receiving port 13A at the upper end of the upper tubular portion 13. A sealing member 25 made of an elastic material such as rubber is housed inside the upper receiving member 20.

[0026] The seal member 25 has a cylindrical wall portion 26, an inner flange-type vertical pipe receiving portion 27 formed on the inner periphery of the bottom of the cylindrical wall portion 26, and a seal body portion 28 formed on the inner periphery of the upper part of the cylindrical wall portion 26. The seal member 25 is housed inside the upper receiving member 20 with the vertical pipe receiving portion 27 in contact with the inner flange portion 23 of the upper receiving member 20. The lower end of the vertical drainage pipe 5 on the upper floor side is inserted into the part inside the upper receiving member 20 where the seal member 25 is provided, and the vertical drainage pipe 5 is supported by the vertical pipe receiving part 27. In addition, a ring-cap type cover member 29 is provided on top of the cylindrical wall part 26, and the upper surface side of the seal main body part 28 through which the vertical drainage pipe 5 is inserted is covered with the cover member 29.

[0027] The upper tubular portion 13 has a spigot 13B formed at its lower end with a reduced diameter, and this spigot 13B is inserted into the socket 12A at the upper end of the collecting portion 12 and fitted to the top of the collecting portion 12. As shown in Figure 1, one or more horizontal pipe connection sections 11 are formed on the side of the collecting section 12, into which horizontal pipes 6 are inserted and connected. The horizontal pipe connection section 11 has a cylindrical section 11a and an inner flange section 11b formed on the base end side of the cylindrical section 11a. The horizontal pipe 6 is inserted into the horizontal pipe connection section 11 via a cylindrical horizontal pipe joint member (bush) 11A, and a ring-shaped plate-shaped cover member 11D is attached to the section where the horizontal pipe 6 passes through the horizontal pipe joint member 11A. The horizontal pipe 6 inserted into the horizontal pipe connection section 11 is fixed to the horizontal pipe connection section 11 by a fixing means such as adhesive. In the installed state shown in Figure 1, the horizontal pipe connection section 11 is positioned directly above the floor slab S.

[0028] A vertical rib 12b is formed on the inner periphery of the collecting section 12 at a position adjacent to the part where the horizontal pipe 6 is connected. This vertical rib 12b is a member that prevents wastewater that has flowed into the collecting section 12 from a specific horizontal pipe 6 from flowing back into other horizontal pipes. The collecting portion 12 is cylindrical and has the same inner diameter from its top end to its bottom end. A spigot 12B at the bottom end of the collecting portion 12 is fitted into the top end of the lower connecting portion 15.

[0029] The lower connecting portion 15 is a member that constitutes the lower portion of the joint 1, and is formed with a large diameter cylindrical portion 15a, a tapered portion 15b, and a small diameter cylindrical portion 15c that are coaxially formed from top to bottom. The inner diameter of the large-diameter cylindrical portion 15a is set to be approximately equal to the outer diameter of the spigot 12B of the collecting portion 12. The axial length of the large-diameter cylindrical portion 15a is set to be slightly smaller than the axial length of the collecting portion 12. In FIG. 1, the axial length of the large-diameter cylindrical portion 15a is formed to be approximately half the thickness of the floor slab S.

[0030] The tapered section 15b is a section in which the tube body is gradually narrowed so that the diameter becomes smaller at the bottom without changing the wall thickness dimension, and its axial length is longer than that of the large diameter cylindrical section 15a, and it is positioned so as to protrude a predetermined length below the floor slab S. As shown in Figure 1, the small-diameter cylindrical portion 15c is the portion into which the upper end of the vertical drainage pipe 5 of the lower floor is inserted and connected, and is configured to protrude downward by a certain distance from the ceiling surface of the floor slab S. A stopper portion 15d, which abuts against the upper end surface of the upper end insertion port of the vertical drainage pipe 5 of the lower floor, is formed inside the small-diameter cylindrical portion 15c on an extension line of the tapered portion 15b. As shown in Figure 1, a recessed portion 15f is formed around the stopper portion 15d to prevent an increase in the wall thickness of the stopper portion 15d and its vicinity.

[0031] The first swirl vane 16 is supported by a support piece 16a extending downward from the lower end of the peripheral wall portion 21 of the upper receiving member 20, and is formed so as to be located inside the center portion in the height direction of the upper tubular portion 13. The first swirl vane 16 has a curved plate 16b with a tapered shape, and the curved plate 16b is arranged with its concave portion facing upward so as to face below the vertical drainage pipe 5. The first swirl vane 16 is provided to receive a portion of the wastewater flowing down from the vertical drainage pipe 5 and swirl it along the curved plate 16b, thereby generating a swirling flow.

[0032] The second swirl vane 17 is made up of an arc-shaped blade plate 17a formed to extend obliquely up and down inside the lower connecting portion 15. The third swirl vane 18 has a curved plate 18b with a tapered shape like the first swirl vane 16, and is arranged below the large-diameter cylindrical portion 15a with its concave portion facing upward. Each of these swirl vanes generates a swirling flow in a portion of the wastewater, rectifying the wastewater and contributing to improved drainage performance.

[0033] In the joint 1, a first sound-insulating cover 30 is provided to cover the outer periphery of the upper tubular portion 13 and the outer periphery of the peripheral wall portion 21 above it, and a second sound-insulating cover 31 is provided to cover the outer periphery of the lower part of the upper tubular portion 13 and the outer periphery of the collecting portion 12. In the configuration shown in FIG. 1 , the lower end of the first sound-insulating cover 30 is arranged as an overlapping portion 30a to cover the upper end of the second sound-insulating cover 31, and a waterproof tape 33 is wrapped around the overlapping portion 30a covering the upper end of the second sound-insulating cover 31 to cover this overlapping portion. The second sound-insulating cover 31 is arranged to cover the outer periphery of the cylindrical portion 11a of the horizontal pipe connecting portion 11 where the cylindrical portion 11a is provided. The second sound-insulating cover 31 is formed up to a position covering the upper end of the lower connecting portion 15. The upper end of the first sound-insulating cover 30 is formed up to the upper end of the tubular wall portion 26 of the upper receiving member 20 or the peripheral portion of the cover member 29, and the upper end of the first sound-insulating cover 30 is protected by a waterproof tape 34 wrapped around it.

[0034] As an example, the first sound-insulating cover 30 and the second sound-insulating cover 31 have a two-layer structure consisting of an inner layer a made of an inner layer material such as soft urethane foam and an outer layer b made of an exterior material such as a butyl rubber sheet with a synthetic resin adhesive, as shown in Fig. 2. The inner layer a may also have a two-layer structure in which the outer layer b is made of a fire-resistant material such as fiber-mixed mortar and a sound-insulating sheet. The outer layer b made of a sound-insulating sheet does not have to be provided. The waterproof tape 33 is made of a butyl rubber sheet with a polyolefin film or the like, and can be attached to the area where it is used, making the area waterproof.

[0035] A thermal expansion material 35 made of a graphite-based thermal expansion material or the like is attached to the outer periphery of the large-diameter cylindrical portion 15a of the lower connecting portion 15. As an example, the thermal expansion material 35 is made of thermally expandable graphite or the like with a thermal expansion start temperature set to 240°C or higher, and expands in the event of a fire to block the through-hole 19 in the floor slab S.

[0036] A third sound-insulating cover 36 is provided on the lower connecting portion 15, covering the area from the thermal expansion material-attached portion at the upper end to the small-diameter cylindrical portion 15c. The third sound-insulating cover 36 may, for example, be configured with an inner layer a such as a fiber-mixed mortar layer and an outer layer b such as a sound-insulating sheet, but the outer layer b made of a sound-insulating sheet need not be provided, and the cover may have a structure similar to that of the first sound-insulating cover 30 and the second sound-insulating cover 31 described above. As an example, a two-layer structure may be used, consisting of an inner layer a made of an inner layer material such as soft urethane foam and an outer layer b made of an exterior material such as a butyl rubber sheet with a synthetic resin adhesive, as shown in FIG. 2.

[0037] The joint 1 covered with the first to third sound-insulating covers 30, 31, 36 passes through the through-hole 19 of the floor slab S and is attached to the floor slab S so that the thermal expansion material 35 is disposed inside the through-hole 19. More specifically, the joint 1 is fixed to the floor slab S with a filler 37 such as mortar that is filled in the through-hole 19 so as to fill the through-hole 19 around the joint 1, with the large-diameter cylindrical portion 15a positioned on the upper inner side of the through-hole 19.

[0038] As shown in Figure 1, joint 1 attached to floor slab S connects the upper floor drainage vertical pipe 5 with the lower floor drainage vertical pipe 5, and drainage water from each floor flows into collection section 12 via horizontal pipe 6. Upper floor drainage water flows from the upper floor drainage vertical pipe 5 into collection section 12 via upper tubular section 13 of joint 1. Because first swirl vanes 16 are installed inside upper tubular section 13, a portion of the drainage water is converted into a swirling flow, straightened, and directed downward. For example, if the first swirl vanes 16 guide the drainage water downward while swirling, the reflected flow of the drainage water can be prevented from flowing back toward the horizontal pipe. Therefore, joint 1 has excellent drainage performance.

[0039] In the joint 1, the upper tubular portion 13 is cylindrical and has the same inner diameter as the collecting portion 12, and the wastewater flowing in from the vertical drain pipe 5 on the upper floor side reaches the internal space of the upper tubular portion 13, which has a larger inner diameter than the vertical drain pipe 5. The upper tubular portion 13 has a larger diameter than the vertical drain pipe 5 and the internal space volume of the upper tubular portion 13 is sufficiently large, so providing the upper tubular portion 13 ensures sufficient volume for the wastewater introduction portion of the joint 1, and therefore the joint 1 has high drainage performance. For example, even if a large amount of wastewater flows into the upper tubular portion 13 from the vertical drain pipe 5, the interior of the upper tubular portion 13 is unlikely to become negative pressure, so drainage is not hindered and the drainage is excellent.

[0040] Furthermore, no reduced diameter section is formed at the bottom of the collecting section 12, allowing wastewater to flow up to the lower connection section 15 while maintaining the same inner diameter. If a reduced diameter section were formed at the bottom of the collecting section 12, the wastewater from the horizontal pipes 6 and the wastewater from the vertical drainage pipes 5 would mix in the collecting section 12, increasing the amount of wastewater and making the collecting section 12 prone to becoming a region that could become full. For this reason, depending on the full-water state, an abnormal negative pressure region or positive pressure region could be created at the bottom of the collecting section 12, which could cause problems with drainage. Therefore, by making the bottom of the collecting section 12 a region with a larger internal volume while maintaining the same inner diameter, drainage can be improved compared to a configuration with a reduced diameter section. The upper side of the joint 1 has a divided structure consisting of two parts, the collection part 12 and the upper tubular part 13, and is therefore made from a molded resin body. There are few shape restrictions when molding each part, making it easy to manufacture. For example, if the collecting portion 12 and the upper tubular portion 13 of the fitting 1 are molded as a single unit, there is a risk that it will be impossible to mold the collecting portion 12 and the upper tubular portion 13 in a complex shape due to issues such as restrictions on molding. This places restrictions on the shapes of the collecting portion 12 and the upper tubular portion 13 obtained as a molded product, which may cause problems when molding a shape that can pass a large amount of wastewater, such as 7 L / s or more. In this regard, if the collecting portion 12 and the upper tubular portion 13 are molded separately, the degree of freedom in molding them individually increases, making it possible to manufacture a molded product that can pass a large amount of wastewater, such as 7 L / s or more.

[0041] The joint 1 shown in Figure 1 has an upper receiving member 20 on top of the upper tubular portion 13, and the portion that receives the vertical drainage pipe 5 on the upper floor side is covered with the seal main body portion 28, so that the portion that receives the vertical drainage pipe 5 on the upper floor side is less likely to leak.

[0042] In the case of the joint 1 shown in Figure 1, when a fire breaks out on a floor below the floor slab S, the heat of the fire causes the thermal expansion material 35 to expand, preventing the joint 1 from melting and falling, and the thermal expansion material 35 also blocks the internal space of the lower connection part 15. This prevents flames, smoke, etc. from passing through the internal space of the joint 1 and rising to floors above the floor slab S. Therefore, the joint 1 is able to exhibit fire resistance. In this case, the thermal expansion material 35 is provided between the second swirl vane 17, the third swirl vane 18 and the vertical rib 12b, so that when the thermal expansion material 35 thermally expands, these swirl vanes 17, 18 and the vertical rib 12b do not hinder the thermal expansion.

[0043] In a building, wastewater collected in horizontal pipe 6 flows into joint 1. When the flow rate is high, the wastewater occupies most of the space inside horizontal pipe 6, but when the flow rate is low, the wastewater flows along the lower end of horizontal pipe 6. For example, in Fig. 1, wastewater that flows from the horizontal pipe 6 into the collecting section 12 of the joint 1 hits the vertical rib 12b and is guided downward, preventing the wastewater from flowing back into other horizontal pipes. For example, wastewater that flows downward through the vertical drainage pipe 5 is treated appropriately by wastewater treatment equipment (not shown).

[0044] The joint 1 shown in Fig. 1 has excellent sound insulation properties because it is covered with a first sound-insulating cover 30, a second sound-insulating cover 31, and a third sound-insulating cover 36. For example, even if drainage water passes through the inside, the structure makes it difficult for the drainage noise to leak to the outside. Furthermore, the first sound-insulating cover 30 is attached to the outer surface of the upper tubular portion 13, and the second sound-insulating cover 31 is attached to the outer surfaces of the upper tubular portion 13 and the collecting portion 12. Therefore, the first sound-insulating cover 30 can be fastened to the outer surface of the upper tubular portion 13, and the second sound-insulating cover 31 can be fastened to the outer surfaces of the upper tubular portion 13 and the collecting portion 12. Because the first sound-insulating cover 30 and the second sound-insulating cover 31 can be fastened and attached individually, they can be tightly attached individually and their individual positions can be finely adjusted. This prevents deformation and deflection of the sound-insulating covers.

[0045] In the joint 1 of the first embodiment shown in Figure 1, the first swirl vane 16 is provided inside the upper tubular portion 13. However, in addition to the first swirl vane 16, a deflector vane may be provided so as to protrude diagonally upward and downward from the inner surface of the peripheral wall of the upper tubular portion 13. In addition to the first swirl vane 16, a deflector vane may be used to generate a swirling flow or a deflected flow in the wastewater flow, thereby rectifying the wastewater and smoothing its flow. Furthermore, if a deflector vane is provided, the first swirl vane 16 may be omitted. Furthermore, in the fitting 1 of the first embodiment, the vertical pipe connection portion 10 and the upper tubular portion 13 are separate components that are integrated by fitting together, but the vertical pipe connection portion 10 and the upper tubular portion 13 may also be formed from a single molded resin component.

[0046] FIG. 3 is a cross-sectional view showing an example of the joint 1 shown in FIG. 1 in which the third sound-insulating cover 36 has a three-layer structure. The third sound-insulating cover 40 shown in Fig. 3 has a three-layer structure consisting of an inner layer material 41 made of soft urethane foam, a middle layer material 42 made of glass wool heat-insulating material, and an outer layer material 43 made of aluminum foil with a synthetic resin adhesive or glass cloth, etc. The structure is the same as that shown in Fig. 1 in that a thermal expansion material 35 is wound around the portion corresponding to the outside of the large-diameter cylindrical portion 15a. The third sound insulating cover 40 having a three-layer structure shown in FIG. 3 can also provide the same sound insulating effect as the third sound insulating cover 36 shown in FIG.

[0047] FIG. 4 shows a second structural example of the second swirl vane 17 provided at the lower connecting portion 15 in the joint 1 shown in FIG. The structure shown in Figure 4 shows an example in which a recess 44 recessed inward is formed in a part of the wall portion constituting the tapered portion 15b of the lower connecting portion 15, thereby forming a second swirl vane 17 inside the tapered portion 15b. The second swirl vane 17 may be integral with the lower connection portion 15 or may be a separate member.

[0048] FIG. 5 shows an interior member as a swiveling member that is desirable when placed inside the lower connection part 15. This interior member 45 has a structure that can slow down and swirl the drainage water flowing down. The interior member 45 is composed of a cylindrical portion 46 , a deceleration guide 47 formed below the cylindrical portion 46 with a phase shift of 180°, and a turning guide 48 . 5, the cylindrical portion 46 of the interior member 45 is made up of a cylindrical main body 46a that is fitted into the large diameter cylindrical portion 15a, a reduction guide support portion 46b that supports the reduction guide 47, and a swivel guide support portion 49 that supports the swivel guide 48. The swivel guide 48 is equipped with a plurality of blade members 48a, and these blade members 48a generate a swirling flow in the wastewater.

[0049] FIG. 6 shows a second embodiment of a joint according to the present invention. A joint 50 of this second embodiment differs from the structure of the first embodiment in the position where the first swirl vane 16 is provided. In the first embodiment, the first swirl blade 16 is supported by the support piece 16a that extends downward from the lower end of the peripheral wall portion 21 of the upper receiving member 20. In the second embodiment, the first swirl vane 16 is supported by a support piece 16a extending downward from the lower end of the peripheral wall of the upper cylindrical portion 13.

[0050] In the second embodiment, the first swirl vane 16 is formed so as to be located inside the center in the height direction of the collecting section 12. The shape of the first swirl vane 16 is the same as the configuration in the first embodiment, and it is arranged so that the concave portion of the curved plate 16b faces upward and faces below the upper tubular section 13. The first swirl vane 16 in the second embodiment receives a portion of the wastewater flowing down from the vertical drainage pipe 5 and swirls it along the curved plate 16b, thereby generating a swirling flow. The joint 50 of the second embodiment has other configurations similar to those of the joint 1 of the first embodiment, so the same components are given the same reference numerals and their description will be omitted. Regarding other operational effects, the joint 50 of the second embodiment can obtain operational effects equivalent to those of the joint 1 of the first embodiment.

[0051] FIG. 7 shows another example of the structure of the first swirl vane 16 provided in the collecting portion 12 in the joint 50 shown in FIG. In the structure shown in FIG. 7, a recess 12d is formed in a part of the peripheral wall of the collecting portion 12, thereby forming a first swirl vane 52 on the inner side of the collecting portion 12. In the structure shown in FIG. The first swirl vane 52 may be configured integrally with the collecting portion 12 or may be configured separately from the collecting portion 12.

[0052] FIG. 8 shows a third embodiment of a joint according to the present invention. A joint 60 of this third embodiment differs from the first embodiment in the configuration of the upper tubular portion 13. In the configuration of the first embodiment, a spigot 13B having a smaller diameter than the peripheral wall of the upper tubular portion 13 is formed at the lower end of the upper tubular portion 13, but in the joint 60 of the third embodiment, a socket 13d having a larger diameter than the peripheral wall is formed at the lower end of the upper tubular portion 13. The upper end of the assembly portion 12 is fitted into this socket 13d.

[0053] In the fitting structure between the lower end of the upper tubular portion 13 and the upper end of the assembly portion 12, either one may have a spigot formed thereon, or either one may have a socket formed thereon. In any case, the fitting structure of the spigot and socket makes it possible to realize a structure in which the upper tubular portion 13 and the assembly portion 12 can be separated and yet can be reliably joined. The joint 60 of the third embodiment has other configurations similar to those of the joint 1 of the first embodiment, so the same components are given the same reference numerals and their description will be omitted. Regarding other functions and effects, the joint 60 of the third embodiment can obtain the same functions and effects as the joint 1 of the first embodiment.

[0054] 9 shows a fourth embodiment of a joint according to the present invention, and in this fourth embodiment, the configuration of the first swirl vane 16 of the joint 65 is different from that of the third embodiment. The other configurations are the same as those of the third embodiment. In the fourth embodiment, a ring member 66, the overall configuration of which is shown in Figure 10, is fitted between the upper tubular portion 13 and the collecting portion 12, and the first swirl vane 16 is supported by a support piece 16a extending downward from the lower end of the peripheral wall of this ring member 66.

[0055] The ring member 66 has a peripheral wall 66a with a constant thickness, and a peripheral protrusion 66b is formed in the center of the outer surface of the peripheral wall 66a in the height direction. A spigot 66A that can be inserted into the socket 13d of the upper tubular portion 13 shown in Figure 8 is formed on the upper side of the peripheral protrusion 66b of the ring member 66. A spigot 66B that can fit into the upper end of the assembly portion 12 shown in Figure 8 is formed on the lower side of the peripheral protrusion 66b of the ring member 66.

[0056] The ring member 66 has its spigot portion 66A fitted into the socket 13d of the upper tubular portion 13 and its spigot portion 66B fitted into the socket 12A of the collecting portion 12, joining the upper tubular portion 13 and the collecting portion 12. In this state, the ring member 66 supports the first swirl vane 16 so that it is positioned inside the collecting portion 12. In the fourth embodiment, the first swirl vane 16 is formed so as to be located inside the center in the height direction of the collecting section 12. The shape of the first swirl vane 16 is the same as the configurations of the first and third embodiments, and it is arranged so as to face below the upper tubular section 13 with the concave surface of the curved plate 16b facing upward.

[0057] The first swirl vane 16 of the fourth embodiment receives a portion of the wastewater flowing down from the vertical drainage pipe 5 and swirls it along the curved plate 16b, thereby generating a swirling flow. The joint 65 of the fourth embodiment has other configurations similar to those of the joint 1 of the third embodiment, so the same components are given the same reference numerals and their description will be omitted. Regarding other operational effects, the joint 65 of the fourth embodiment can obtain operational effects equivalent to those of the joint 60 of the third embodiment.

[0058] Figure 11 shows a fifth embodiment of a fitting according to the present invention. A fitting 70 of this fifth embodiment has a configuration substantially equivalent to that of the fitting 1 of the first embodiment, but differs in that the horizontal pipe 6 is connected to the cylindrical portion 11a of the horizontal pipe connection portion 11 via a pipe fitting portion 72 having an inclined portion 72b inclined obliquely upward. The remaining configuration is equivalent to that of the first embodiment. The pipe joint 72 has a first cylindrical portion 72a, an inclined portion 72b, and a second cylindrical portion 72c. Because of the inclined portion 72b, the second cylindrical portion 72c is located at a slightly higher position than the first cylindrical portion 72a, and a horizontal pipe (not shown) connected to the pipe joint 72 is connected to the collecting portion 12 at a position slightly higher than the cylindrical portion 11a.

[0059] By providing the pipe joint part 72 having the inclined part 72b, it is possible to create a downward diagonal flow of wastewater when it flows from the horizontal pipe 6 into the collecting part 12, and the wastewater from the horizontal pipe 6 can be smoothly introduced into the lower connecting part 15. Therefore, there is less risk that the wastewater from the horizontal pipe 6 will block the bottom side of the collecting part 12, and there is less risk that the flow of wastewater from the vertical drainage pipe 5 will be blocked.

[0060] It is not necessary to orthogonally orthogonalize the horizontal pipe to the axis of the cylindrical portion 11a as in the fourth embodiment shown in Figure 11, and the connecting portion of the horizontal pipe may be connected to the cylindrical portion 11a so as to have a bent axis. Since the other configuration of the joint 70 of the fourth embodiment is the same as that of the joint 1 of the first embodiment, the same components are designated by the same reference numerals and their description will be omitted. Regarding other operational effects, the joint 70 of the fourth embodiment can obtain operational effects equivalent to those of the joint 1 of the first embodiment.

[0061] 12 shows a sixth embodiment of a joint according to the present invention. A joint 75 of this sixth embodiment has a configuration substantially equivalent to that of the joint 1 of the first embodiment, but differs in the installation state of the first sound-insulating cover 30 and the second sound-insulating cover 31. In the sixth embodiment, the end face of the lower end 30b of the first sound-insulating cover 30 and the end face of the upper end 31b of the second sound-insulating cover 31 are butted together so as not to overlap, and a waterproof tape 76 is wrapped around them to cover the butted and opposed portions. The other configurations are equivalent to those of the first embodiment. The first sound insulating cover 30 and the second sound insulating cover 31 may be installed with their ends overlapping as in the first embodiment, or may be installed with their ends butted together so as not to overlap as in the sixth embodiment.

[0062] 13 shows a seventh embodiment of a joint according to the present invention. A joint 80 of this seventh embodiment has a configuration substantially equivalent to that of the joint 1 of the first embodiment, but differs in the state of the first sound-insulating cover 30 and the second sound-insulating cover 31. In the seventh embodiment, the first sound-insulating cover 30 and the second sound-insulating cover 31 are configured as a single common sound-insulating cover 81. The configuration of the sound-insulating cover 81 is equivalent to that of the first sound-insulating cover 30 and the second sound-insulating cover 31. As an example, the two-layer structure of the inner layer a and outer layer b described above can be adopted. The first sound insulating cover 30 and the second sound insulating cover 31 may be separate bodies as in the first embodiment, or may be a common body as in the seventh embodiment. When a common sound insulating cover 81 is used, the waterproof tape 33 can be omitted.

[0063] 14 shows an eighth embodiment of a joint according to the present invention. A joint 85 of this eighth embodiment has a configuration substantially identical to that of the joint 1 of the first embodiment, but differs in the structures of the first sound-insulating cover 30 and the second sound-insulating cover 31. In the eighth embodiment, the first sound-insulating cover 30 and the second sound-insulating cover 31 are formed by a single common sound-insulating cover 86. As one example, the sound-insulating cover 86 can be formed into a two-layer structure having an inner layer a made of a fire-resistant material such as fiber-mixed mortar and an outer layer b made of a sound-insulating sheet. Note that the outer layer b made of a sound-insulating sheet need not be provided.

[0064] The first sound-insulating cover 30 and the second sound-insulating cover 31 may be separate bodies as in the first embodiment, or may be a common cover made of fiber-mixed mortar as in the eighth embodiment. When a common sound-insulating cover 86 is used, the waterproof tapes 33 and 34 can be omitted.

[0065] FIG. 15 shows a ninth embodiment of a joint according to the present invention. The joint 90 of this ninth embodiment has a similar configuration to the joint 1 of the first embodiment, but differs in that a cylindrical intermediate portion 91 of the same inner diameter is connected below the collecting portion 12, and a lower connecting portion 15 is connected below the intermediate portion 91. The intermediate portion 91 is provided to pass through the through-hole 19 of the floor slab S, and the lower connection portion 15 is connected to the lower end of the intermediate portion 91 which is provided to protrude slightly below the floor slab S. In the lower connection portion 15 of the ninth embodiment, a socket 15g is formed in the upper part of the large diameter cylindrical portion 15a, and the lower end of the intermediate portion 91 is fitted into this socket 15g. A socket 91A with a slightly larger diameter is formed at the upper end of the intermediate portion 91, and a spigot 12B at the lower end of the collecting portion 12 is fitted into this socket 91A. The inner diameter of the intermediate portion 91 is approximately the same as the inner diameter of the collecting portion 12 and the upper cylindrical portion 13. The outer diameter of the intermediate portion 91 is, for example, 175 to 190 mm, and in the configuration of Figure 15, for example, the inner diameter is the same from the upper end to the lower end.

[0066] Since the intermediate portion 91 is configured to be housed in the through-hole 19 of the floor slab S, the thermal expansion material 35 is wrapped around the outer periphery of the intermediate portion 91. Also, a fourth sound-insulating cover 92 having a configuration similar to that of the third sound-insulating cover 36, which has a two-layer structure combining an inner layer a made of a fire-resistant material such as fiber-mixed mortar and an outer layer b made of a sound-insulating sheet, is wrapped around the outer periphery of the intermediate portion 91. The outer layer b made of a sound-insulating sheet does not have to be provided.

[0067] 15, the upper part of the fourth sound-insulating cover 92 is below the second sound-insulating cover 31 and covers the periphery of the spigot 12B at the lower end of the collection part 12, and the lower part of the fourth sound-insulating cover 92 covers up to a part slightly above the socket 15g. The lower end of the second sound-insulating cover 31 and the upper end part of the fourth sound-insulating cover 92 are butted together, and the part of the outer layer b that covers the upper end of the inner layer a of the fourth sound-insulating cover 92 butts against the lower end of the second sound-insulating cover 31. Additionally, the lower end of the fourth sound-insulating cover 92 and the upper end of the second sound-insulating cover 31 butt against each other. The outer layer b is formed so as to cover the end of the inner layer a at the lower end of the fourth sound-insulating cover 92, and the outer layer b is formed so as to cover the end of the inner layer a at the upper end of the second sound-insulating cover 31, so that the lower end of the fourth sound-insulating cover 92 and the upper end of the second sound-insulating cover 31 are connected with their outer layers butted against each other. The other configurations are the same as those of the first embodiment.

[0068] The joint 90 of the ninth embodiment has other configurations similar to those of the joint 1 of the first embodiment, so the same components are given the same reference numerals and their description will be omitted. The fitting 90 has an upper tubular portion 13 and a collecting portion 12 with an inner diameter larger than that of the vertical drainage pipe 5 shown in Figure 1, and the internal volume of the upper tubular portion 13 and the collecting portion 12 into which the wastewater flows from the vertical drainage pipe 5 is increased, thereby improving drainage performance, which is the same as the configuration of the first embodiment.

[0069] In the configuration of the ninth embodiment, an intermediate section 91 with a large internal volume is further arranged below the collection section 12, so that the wastewater that has passed through the collection section 12 can be introduced into the intermediate section 91 with a large internal volume and flowed therethrough, thereby further improving drainage performance. Therefore, even if a large amount of wastewater flows into the collection section 12 from the vertical drainage pipe 5 on the upper floor side or the horizontal pipe, the wastewater can be smoothly guided to the intermediate section 91 and then to the vertical drainage pipe on the lower floor side. Regarding other operational effects, the joint 90 of the ninth embodiment can obtain operational effects equivalent to those of the joint 1 of the first embodiment.

[0070] 16 shows a tenth embodiment of a joint according to the present invention, and the tenth embodiment of a joint 95 differs from the third embodiment in the fitting structure of the spigot and socket between the upper tubular portion 13 and the assembly portion 12. The rest of the configuration is the same as that of the third embodiment. In the fitting 60 of the third embodiment, a socket 13d having a larger diameter than the peripheral wall portion is formed at the lower end of the upper tubular portion 13. However, in the fitting 95 of this embodiment, the upper end of the collection portion 12 has an enlarged socket 12A. In this case, there is no need to narrow the diameter (inner diameter) of the spigot 13B at the lower end of the upper tubular portion 13. If the inner diameter of the spigot 13B is not narrowed, the internal step of the fitting 95 is eliminated, the internal volume of the fitting 95 is expanded, and drainage performance is improved. The joint 95 of the tenth embodiment has other configurations similar to those of the joint 60 of the third embodiment, so the same components are denoted by the same reference numerals and their description will be omitted. As for other functions and effects, the joint 95 of the tenth embodiment can obtain the same functions and effects as the joint 60 of the third embodiment.

[0071] 17 shows an eleventh embodiment of a joint according to the present invention, and the joint 100 of this eleventh embodiment differs from the configuration of the tenth embodiment in that it is provided with the aforementioned deflector plate 101 instead of the first swirl vane 16. The other configurations are the same as those of the tenth embodiment. In the eleventh embodiment, the deflector plate 101 is provided on a portion of the inner surface of the upper part of the upper tubular portion 13 that is located below the upper receiving member 20. The deflector plate 101 is provided on a portion of the inner surface of the upper part of the collecting portion 12 that is located below the upper tubular portion 13. The deflector plate 101 may be provided on only one of these two portions, or on both. It is preferable that the deflector plate 101 is molded integrally with either the upper tubular portion 13 or the collecting portion 12 (not molded as a separate member and combined). The joint 100 of the eleventh embodiment has other configurations similar to those of the joint 95 of the tenth embodiment, so the same components are given the same reference numerals and their description will be omitted. Regarding other operational effects, the joint 100 of the eleventh embodiment can obtain operational effects equivalent to those of the joint 95 of the tenth embodiment.

[0072] 18 shows a twelfth embodiment of a joint according to the present invention, and the joint 105 of this twelfth embodiment differs from the configuration of the eleventh embodiment in that the upper tubular portion 13 is provided with a plurality of upper and lower tubular bodies 106. The other configurations are the same as those of the eleventh embodiment. In the twelfth embodiment, the upper tubular portion 13 includes two upper and lower tubular bodies 106. In other words, the upper tubular portion 13 is divided into two upper and lower tubular bodies 106. The vertically adjacent tubular bodies 106 are fixed by fitting together. In this embodiment, the upper end of the lower tubular body 106 is enlarged in diameter to form a socket 106A. The lower end of the upper tubular body 106 is not reduced in diameter and forms a spigot 106B. In the illustrated example, the deflector plate 101 is provided on the uppermost tubular body 106 among the multiple tubular bodies 106, but it may also be provided on another tubular body 106. The joint 105 of the twelfth embodiment has other configurations similar to those of the joint 100 of the eleventh embodiment, so the same components are given the same reference numerals and their description will be omitted. Regarding other operational effects, the joint 105 of the twelfth embodiment can obtain operational effects equivalent to those of the joint 100 of the eleventh embodiment.

[0073] Each embodiment of the present invention has been described above in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to these embodiments, and the present invention also includes changes, combinations, deletions, etc. of the configuration within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0074] S...floor slab, 1...joint, 2...drainage equipment, 5...vertical drainage pipe, 6...horizontal pipe (horizontal drainage branch pipe), 10...vertical pipe connection part, 11...horizontal pipe connection part, 12...collection part, 13...upper tubular part, 13A...receptacle, 13B...spigot, 15...lower connection part, 16...first swirl blade (first swirl member), 17...second swirl blade (second swirl member), 18...third swirl blade (third swirl member), 19...through hole, 20...upper receiving member, 30...first sound-insulating cover, 31...second sound-insulating cover, 36...third sound-insulating cover, 50, 60, 65, 70, 75, 80, 85, 90...joint, 81...sound-insulating cover.

Claims

1. A joint installed in a through-hole provided in the floor slab of a building, A vertical pipe connecting section that connects to a vertical pipe extending from the upper floor, A manifold having a horizontal pipe connection part that connects to a horizontal pipe, The vertical pipe connection part and the manifold part are connected, and the upper cylindrical part has an inner diameter larger than the inner diameter of the vertical pipe, The lower connection part connects to the vertical pipe extending from the lower floor, Equipped with, The vertical pipe connection, the upper cylindrical section, the manifold section, and the lower connection section are made of resin. The vertical pipe connection section and the upper cylindrical section are constructed as separate parts. The upper cylindrical portion and the manifold portion are formed as a single unit. A first rotating member is integrally provided inside the aforementioned manifold. A joint in which a second swivel member is integrally provided inside the lower connecting portion.

2. A longitudinal rib extending in the axial direction of the manifold is formed inside the manifold, The joint according to claim 1, wherein a thermal expansion material is provided on the outer circumference of the joint at a position that is within the through hole and between the longitudinal rib and the second swivel member.

3. The joint according to claim 1 or 2, further comprising a sound-insulating cover that covers the lower connection portion, wherein the upper end of the sound-insulating cover covers the lower end of the manifold portion.

4. The joint according to any one of claims 1 to 3, wherein a sound-insulating cover is provided to cover the outer surfaces of the upper cylindrical portion and the manifold portion.

5. The joint according to any one of claims 1 to 4, which connects the manifold and the lower connecting portion and has an intermediate portion having the same inner diameter from one end to the other.

6. A drainage system comprising: a joint according to any one of claims 1 to 5; a drainage vertical pipe for an upper floor connected to the vertical pipe connection; a drainage vertical pipe for a lower floor connected to the lower end of the lower connection; and a horizontal pipe connected to the horizontal pipe connection.

7. A building comprising the drainage equipment described in Claim 6.

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