Fittings

Abstract

The present invention aims to provide a joint. [Solution] The joint of the present invention is a joint installed in a through-hole provided in the floor slab of a building, and comprises a manifold having a vertical pipe connection part connected to a vertical pipe extending from an upper floor and a horizontal pipe connection part connected to a horizontal pipe, a lower connection part connected to a vertical pipe extending from a lower floor, and an intermediate part connecting the manifold part and the lower connection part and having an inner diameter larger than that of the vertical pipe, wherein at least the intermediate part is embedded in the through-hole of the floor slab, and either the manifold part, the intermediate part, or the lower connection part is made of resin, and a first swivel member is provided inside either the manifold part or the intermediate part, and a second swivel member is provided inside the lower connection part.

Description

Technical Field

[0001] The present invention relates to a joint.

Background Art

[0002] Conventionally, a resin drain pipe joint as described in Patent Document 1 below has been known. This drain pipe joint is installed on each floor by penetrating a floor slab that partitions the upper and lower floors of a building, and is a drain pipe joint that connects the drain pipes on the upper floor and the lower floor in a watertight state. This drain pipe joint includes a resin upper body portion having a receiving port to which the drain pipe on the upper floor is connected, and an upper end connection portion connected to the lower end portion of the upper body portion, which is a portion buried in the floor slab. Further, it has a lower body portion that protrudes downward from the ceiling surface of the floor slab and has a lower end connection portion to which the drain pipe on the lower floor is connected. In addition, the above-described drain pipe joint includes a resin interior member that is configured to be fixed inside the lower body portion and has blades for guiding the flowing drainage.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The above-described drain pipe joint is used in high-rise buildings and the like. However, in the drainage of high-rise buildings, the drainage from each floor accumulates as the lower floors are reached, and the amount of water increases. Therefore, it is required to have high drainage performance that can flow a large amount of drainage such as 7 L / s or more. Further, it is also required that no water seal failure occurs in the joint even when a large amount of drainage is flowing.

[0005] Conventionally, cast iron manifolds, which are easy to manufacture, have been known to have the high drainage performance described above. However, due to limitations such as size constraints and the inability to mold complex shapes, it has been difficult to provide manifolds with high drainage performance using resin manifolds, which are manufactured by injection molding.

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

[0007] To solve the aforementioned problems, the present invention proposes the following embodiments. "1" The joint according to this embodiment is a joint installed in a through hole provided in the floor slab of a building, and comprises a manifold having a vertical pipe connection part connected to a vertical pipe extending from an upper floor and a horizontal pipe connection part connected to a horizontal pipe, a lower connection part connected to a vertical pipe extending from a lower floor, and an intermediate part connecting the manifold part and the lower connection part and having an inner diameter larger than that of the vertical pipe, wherein at least the intermediate part is embedded in the through hole in the floor slab, and either the manifold part, the intermediate part, or the lower connection part is made of resin, and a first swivel member is provided inside either the manifold part or the intermediate part, and a second swivel member is provided inside the lower connection part.

[0008] If an intermediate section with a larger inner diameter and volume than the vertical pipe is placed below the manifold, the wastewater that has passed through the manifold to which the horizontal pipe is connected can be introduced into the intermediate section with a larger volume and flowed through, thereby improving drainage. If a large amount of wastewater flows into the collection point from the upper floor's vertical or horizontal drain pipes, this large volume of wastewater can be guided to the intermediate section with its larger internal volume, and then to the lower connection point, which leads to the lower floor's vertical drain pipe.

[0009] "2" In the joint relating to this embodiment, a configuration can be adopted in which a swivel member is provided inside the manifold portion and the intermediate portion, respectively.

[0010] A portion of the wastewater flowing down from the manifold can be received and swirled by a swirling member, generating a swirling flow. By creating a swirling flow from a portion of the wastewater, it can be straightened and guided downwards. For example, by guiding the wastewater to flow downwards while swirling with the swirling member, it is possible to suppress the backflow of the reflected wastewater towards the horizontal pipe. Therefore, the joint will have superior drainage performance.

[0011] "3" In the joint relating to this embodiment, a configuration can be adopted in which a thermal expansion material is wrapped around the outer circumference of the intermediate portion.

[0012] When heat, such as from a fire, is applied to the thermal expansion material, it expands and closes the penetration holes in the floor slab. Furthermore, when the thermal expansion material expands to close the penetration holes, it prevents the joints from coming loose due to melting during a fire. As a result, smoke and flames from the lower floors do not easily spread to the upper floors, thus providing a fire spread prevention effect.

[0013] "4" In the joint according to this form, the upper part of the intermediate section is a socket into which the lower part of the manifold section is inserted, and the lower part of the intermediate section is a socket into which the upper part of the lower connection section is inserted.

[0014] By fitting the lower part of the manifold into the receiving opening at the top of the intermediate part, the manifold and intermediate parts can be joined as a single unit, creating a connection that does not create a step at the joint that would cause drainage resistance. By fitting the lower part of the intermediate part into the upper part of the lower connection part using the insertion opening, the intermediate part can be joined as a single unit to the lower connection part, creating a connection that does not create a step at the joint that would cause drainage resistance. Therefore, when drainage is routed from the collection section through the intermediate section to the lower connection section, smooth drainage is possible without an increase in drainage resistance at the joint, ensuring good drainage performance.

[0015] "5" In the pipe joint according to this embodiment, a sound-insulating cover can be wrapped around the outer circumference of the intermediate section, and the outer diameter of the intermediate section around which the sound-insulating cover is wrapped is 175 to 190 mm.

[0016] Since the outer periphery of the middle part is covered with a sound insulation cover, even when the drainage water from the collecting part flows into the middle part, a structure with excellent sound insulation performance and difficult leakage of drainage sound to the outside can be provided.

Advantages of the Invention

[0017] According to the joint of the present embodiment, since it has a middle part with an inner diameter larger than the inner diameter of the vertical pipe, the inner volume of the part where the drainage water flows from the collecting part connected with the horizontal pipe into the middle part is large, and a joint with excellent drainage capacity in the part from the collecting part to the middle part can be provided.

Brief Description of the Drawings

[0018] [Figure 1] It is a cross-sectional view showing the structure in which the joint according to the first embodiment of the present invention is installed on a floor slab. [Figure 2] It is a perspective view showing an example of a swivel member applied to the middle part of the joint. [Figure 3] It is a perspective view showing a second example of a swivel member applied to the lower part of the joint. [Figure 4] It is a perspective view showing a third example of a swivel member applied to the lower part of the joint. [Figure 5] It is a cross-sectional view showing the joint according to the second embodiment of the present invention. [Figure 6] It is a cross-sectional view showing the joint according to the third embodiment of the present invention. [Figure 7] It is a cross-sectional view showing the joint according to the fourth embodiment of the present invention. [Figure 8] It is a cross-sectional view showing the joint according to the fifth embodiment of the present invention.

Modes for Carrying Out the Invention

[0019] The joint of the first embodiment according to the present invention will be described below with reference to Figure 1. The joint 1 according to this embodiment is a drain pipe joint applicable to drainage facilities 2 in apartment buildings and other multi-unit dwellings, office buildings, etc. As shown in Figure 1, the drainage system 2 has fittings 1 installed on each floor that penetrate vertically through the floor slab S that separates the upper and lower floors of a building such as an apartment complex or office building. In addition, there are resin vertical drainage pipes 5 that connect the fittings 1 on each floor to each other, and resin horizontal pipes (horizontal drainage branch pipes) 6 that are piped above the floor of each floor and connected to the fittings 1 on each floor. The drainage system 2 is constructed by sequentially stacking the pipes, inserting the lower floor's vertical drain pipe 5 into the upper socket of the lower floor's joint, connecting the lower end of the upper floor's joint 1 to the upper end socket of the vertical drain pipe 5, and connecting the lower end of the vertical drain pipe 5 extending to the upper floor to the upper end socket of the joint 1.

[0020] The joint 1 comprises a manifold 12 having a cylindrical vertical pipe connection 10 connected to a vertical drain pipe 5 extending to the upper floor, and a cylindrical horizontal pipe connection 11 connected to a horizontal pipe 6. The joint 1 also comprises an intermediate section 13 connected to the lower part of the manifold 12, and a lower connection 15 connected to a vertical drain pipe 5 extending to the lower floor. In the joint 1, either the manifold 12, the intermediate section 13, or the lower connecting section 15 is made of a molded resin body. Furthermore, a first swivel member (first swivel vane) 16 is provided inside the manifold 12, a second swivel member (second swivel vane) 17 is provided inside the lower connecting section 15, and a third swivel vane 14 is provided inside the intermediate section 13.

[0021] The joint 1 of this embodiment is installed, for example, in the portion where a through hole 19 is formed that penetrates the floor slab S in the vertical direction, as shown in Figure 1. The vertical pipe connection section 10 is connected to a cylindrical upper connection section 18 provided at the top of the manifold section 12, and is the part to which the lower end of the drain vertical pipe 5 extending to the upper floor is connected via the upper receiving member 20. The upper receiving member 20 has a cylindrical peripheral wall section 21, and a large-diameter section 22 is formed on the upper side of this peripheral wall section 21. The upper receiving member 20 is attached to the manifold section 12 by fitting the lower end of the peripheral wall section 21 into the upper connection section 18 of the manifold section 12. A ring-shaped sealing member 24 made of an elastic material such as rubber is attached to the inner circumference of the large-diameter section 22. In the upper receiving member 20, an inner flange-type vertical pipe receiving section 25 is formed on the inner lower side of the peripheral wall section 21, and is configured so that the lower end of the drain vertical pipe 5 on the upper floor side can be supported by this vertical pipe receiving section 25.

[0022] As shown in Figure 1, one or more (two in the example of Figure 1) horizontal pipe connection sections 11 are formed on the side of the manifold section 12, into which horizontal pipes 6 are inserted and connected. Each horizontal pipe connection section 11 has a cylindrical section 11a and an inner flange section 11b formed on the inner circumference of the tip of the cylindrical section 11a. In the right-hand horizontal pipe connection section 11 shown in Figure 1, the horizontal pipe 6 is inserted via a cylindrical horizontal pipe joint member (bush) 11A. A ring-shaped sealing member 27 is inserted into the inner circumference of this horizontal pipe joint member 11A. The horizontal pipe 6 is inserted into the horizontal pipe joint member 11A via the sealing member 27, and the horizontal pipe joint member 11A is fixed to the cylindrical section 11a by means of adhesive or other means. The horizontal pipe connection section 11 and the horizontal pipe 6 are positioned directly above the floor slab S in the installation state shown in Figure 1. In the example shown in Figure 1, cylindrical sections 11a are formed on both the left and right sides of the manifold 12. However, the left cylindrical section 11a is closed off by a cover plate 26, and the horizontal pipe 6 is connected only to the right cylindrical section 11a.

[0023] A vertical rib 12b is formed on the inner circumference of the manifold 12 at a position adjacent to the part where the horizontal pipe 6 is connected. This vertical rib 12b is a component that prevents wastewater flowing from a specific horizontal pipe 6 into the manifold 12 from flowing back into other horizontal pipes. In the manifold 12, a socket 12A is formed on the lower side of the portion where the horizontal pipe connection 11 is connected. The socket 12A is formed in a cylindrical shape with a larger diameter than the upper connection 18.

[0024] Below the manifold 12, a cylindrical intermediate section 13 is installed so as to be inserted vertically through the through-hole 19 of the floor slab S. The intermediate section 13 has a cylindrical receiving opening 13b formed at the upper end of the main body section 13a, which has a uniform inner diameter, and the receiving opening 13b has a diameter slightly larger than that of the main body section 13a. The intermediate section 13 is integrally connected to the lower part of the manifold section 12 by inserting the insertion opening 12A of the manifold section 12 into this receiving opening 13b. In the intermediate section 13, the inner diameter of the main body section 13a is uniform, and this inner diameter is the same as the inner diameter of the insertion opening 12A of the manifold section 12. Furthermore, a third swivel vane 14 is provided at the center of the inner surface of the intermediate section 13, inclined to intersect with the axis of the intermediate section 13.

[0025] The majority of the intermediate section 13 is embedded in the through-hole 19 of the floor slab S. Furthermore, the intermediate section 13 is embedded in the through-hole 19 of the floor slab S by a filler material 29 such as mortar, with the lower end of the inlet 13c slightly protruding below the floor slab S. A thermal expansion material 35 is wrapped around the outer periphery of the intermediate portion 13, specifically the portion located on the inside side of the through hole 19, so as to cover the outer periphery of the intermediate portion 13. The thermal expansion material 35 consists of a graphite-based thermal expansion material or the like. For example, the thermal expansion material 35 consists of a thermal expansion fire-resistant sheet such as thermal expansion graphite with a thermal expansion initiation temperature set to 240°C or higher, and expands in the event of a fire to seal the through-holes 19 in the floor slab S. In addition, the expansion of the thermal expansion material 35 can prevent the joint 1 from falling due to melting during a fire. It is preferable that the position where the thermal expansion material 35 is provided is such that it does not interfere with the step in the portion where the receiving opening 13b is provided.

[0026] A first sound-insulating cover 36, which has a two-layer structure, is wound around the outer circumference of the intermediate section 13. The cover 36 consists of an inner layer a made of sound-absorbing material such as rock wool and an outer layer b made of sound-insulating material such as EPDM (ethylene-propylene-diene rubber). The inner layer a may also be a two-layer structure consisting of a fire-resistant material such as fiber-reinforced mortar and an outer layer b made of a sound-insulating sheet. The outer layer b made of a sound-insulating sheet is not required. In the main body portion 13a of the intermediate section 13, the outer diameter of the portion including the first sound insulation cover 36 is preferably in the range of 175 to 190 mm, and more preferably in the range of 180 to 186 mm. An outer diameter within this range has the advantage of making it easy to apply filling materials such as mortar to through holes 19 with a typical inner diameter formed in the building slab S.

[0027] The lower connecting section 15 is a component that makes up the lower part of the joint 1, and consists of a cylindrical socket 15a, a large-diameter cylindrical section 15b, a tapered section 15c, and a small-diameter cylindrical section 15d, all integrally molded coaxially from top to bottom. The inner diameter of the socket 15a is set to be approximately equal to the outer diameter of the socket 13c of the intermediate section 13.

[0028] The tapered section 15c is a part of the tube that is gradually narrowed so that the lower part has a smaller diameter without changing the wall thickness. Its axial length is longer than that of the large-diameter cylindrical section 15b, and it is positioned to protrude a predetermined length below the floor slab S. As shown in Figure 1, the small-diameter cylindrical section 15d is the part into which the upper end of the drainage vertical pipe 5 extending to the lower floor is inserted and connected. The upper end of the ferrule pipe 30 is fitted into the small-diameter cylindrical section 15d and fixed by means of adhesive or other means. A stopper section 15f with a narrowed inner diameter is formed where the tapered section 15c and the small-diameter cylindrical section 15d are connected, and the upper end of the ferrule pipe 30 is positioned by contacting the stopper section 15f. The lower end of the junction pipe 30 is fitted into the upper end of the drainage vertical pipe 5 that extends to the floor below.

[0029] The first swirling blade 16 is formed to protrude inward from the peripheral wall of the collection section 12 and extends inclined with respect to the central axis of the collection section 12. This first swirling blade 16 is provided to receive a portion of the wastewater flowing down from the drainage vertical pipe 5 and cause it to swirl along the first swirling blade 16 to generate a swirling flow. The installation position of the first swirling blade 16 is preferably such that the upper surface of the blade (the surface that the wastewater hits) is in a blind spot when the connection part of the horizontal pipe 6 is viewed from outside the collection section 12. By positioning it this way, when a cleaning tool is inserted from the horizontal pipe 6 during cleaning, it is possible to prevent the cleaning tool from being pushed upstream by the first swirling blade 16. In Figure 1, the first swirling blade 16 and the horizontal pipe 6 are arranged in the above-described relationship. The second swirling blade 17 is formed to extend diagonally upward and downward inside the lower connection section 15. The second swirling blade 17 generates a swirling flow in a portion of the wastewater flowing through the lower connection section 15, thereby straightening the wastewater flow and improving drainage performance.

[0030] In the joint 1, a second sound insulation cover 37 is provided below the first sound insulation cover 36. The second sound insulation cover 37 has a two-layer structure, consisting of an inner layer a made of a sound-absorbing material such as rock wool and an outer layer b made of a sound-insulating material such as EPDM (ethylene-propylene-diene rubber). The inner layer a may also be a two-layer structure consisting of a fire-resistant material such as fiber-reinforced mortar and an outer layer b made of a sound-insulating sheet. The outer layer b made of a sound-insulating sheet is not required. In the example shown in Figure 1, the upper end of the second sound insulation cover 37 is positioned to cover the lower end of the intermediate section 13 and the receiving opening 15a below it. In this example, the lower end of the first sound insulation cover 36 and the upper end of the second sound insulation cover 37 are abutted together, and the outer layer b that covers the lower end of the inner layer a of the first sound insulation cover 36 is abutted against the outer layer b that covers the upper end of the inner layer a of the second sound insulation cover 37. The lower end of the first sound insulation cover 36 and the upper end of the second sound insulation cover 37 may be arranged in an overlapping configuration.

[0031] The joint 1, covered by the first and second sound insulation covers 36 and 37, is attached to the floor slab S so as to penetrate the through-hole 19 in the floor slab S and to position the thermal expansion material 35 inside the through-hole 19. More specifically, the joint 1 is attached to the floor slab S with the receiving end 13b of the intermediate section 13 positioned slightly below the upper end of the through hole 19, and the lower end of the intermediate section 13 protruding slightly below the floor slab S. In this state, the intermediate section 13 is embedded in the through hole 19 by a filler material 29 such as mortar that fills the through hole 19 around the joint 1.

[0032] As shown in Figure 1, the joint 1 attached to the floor slab S is provided by connecting the drainage vertical pipe 5 extending to the upper floor and the drainage vertical pipe 5 extending to the lower floor, and the drainage from each floor flows into the collection section 12 via the horizontal pipe 6. Drainage from the upper floor flows from the vertical drain pipe 5 extending to the upper floor into the manifold section 12 of the joint 1. However, since the first swirling vane 16 is provided inside the manifold section, a portion of the drainage is transformed into a swirling flow, which is then straightened and guided downwards. For example, when the drainage is guided by the first swirling vane 16 to flow downwards while swirling, it is possible to suppress the reflected flow of the drainage from flowing back into the horizontal pipe. Therefore, the joint 1 has excellent drainage performance.

[0033] In the joint 1, the intermediate section 13 is cylindrical and has the same inner diameter as the collection section 12. Drainage flowing in from the upper floor's vertical drain pipe 5 passes through the collection section 12, which has a larger inner diameter than the vertical drain pipe 5, and then enters the internal space of the intermediate section 13. Since the intermediate section 13 has a larger diameter than the vertical drain pipe 5, and the internal space volume of the intermediate section 13 is sufficiently large, the intermediate section 13 ensures sufficient volume for the drainage outlet of the joint 1, thus giving the joint 1 high drainage performance. For example, even if a large amount of drainage flows from the vertical drain pipe 5 into the collection section 12 and the intermediate section 13, the inside of the collection section 12 and the intermediate section 13 is unlikely to become negatively pressurized, so there is no hindrance to drainage, and the drainage performance is excellent.

[0034] Furthermore, no reduced diameter section is formed at the bottom of the manifold 12, allowing wastewater to flow to the lower connection section 15 while maintaining the same inner diameter. If a reduced diameter section were formed below the manifold 12, the manifold 12 would be prone to becoming a region where wastewater from the horizontal pipe 6 and wastewater from the vertical drain pipe 5 mix, increasing the wastewater volume and potentially leading to a full-water state. In such a state, abnormal negative pressure or positive pressure regions may be generated at the bottom of the manifold 12, potentially causing drainage problems. Therefore, by making the lower part of the manifold 12 a region with a large internal volume while maintaining the same inner diameter, drainage performance can be improved compared to a configuration with a reduced diameter section. The main part of the joint 1 is a split structure consisting of two members, a manifold 12 and an intermediate 13. Because it is made from a molded resin body, there are fewer shape constraints when molding each part, making it easy to manufacture.

[0035] For example, if the manifold 12 and the intermediate section 13 are integrally molded in the joint 1, complex shapes of the manifold 12 and intermediate section 13 may not be moldable due to constraints on mold removal. This would impose constraints on the shape of the manifold 12 and intermediate section 13 obtained as molded products, potentially causing problems when molding shapes that can handle large amounts of wastewater, such as 7 L / s or more. In this respect, if the manifold 12 and the intermediate section 13 are molded as separate parts, the degree of freedom in molding them individually is improved. Furthermore, if the outer diameter of the intermediate section 13 is made to have a sufficient inner diameter, such as 175 to 190 mm, combined with the configuration that does not have a reduced diameter section as described above, it is possible to provide a configuration that can handle large amounts of wastewater, such as 7 L / s or more.

[0036] The joint 1 shown in Figure 1 is equipped with an upper receiving member 20 and covers the portion that receives the drainage vertical pipe 5 on the upper floor with a sealing member 24, so that water leakage is less likely to occur in the portion that receives the drainage vertical pipe 5 on the upper floor.

[0037] The joint 1 shown in Figure 1, when a fire occurs on a floor below the floor slab S, expands due to the heat of the fire, preventing the joint 1 from melting and falling, and the thermal expansion material 35 also seals 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 can exhibit fire resistance.

[0038] In the building, the wastewater collected in the horizontal pipe 6 flows into the joint 1. When the flow rate is high, the wastewater occupies most of the space inside the horizontal pipe 6, but when the flow rate is low, it flows along the lower end of the horizontal pipe 6. For example, in Figure 1, wastewater flowing from the horizontal pipe 6 into the manifold 12 of the joint 1 is guided downwards upon hitting the vertical rib 12b, thereby preventing backflow of wastewater to the other horizontal pipe. For example, wastewater that flows downwards through the vertical drain pipe 5 is treated appropriately by wastewater treatment equipment (not shown).

[0039] The joint 1 shown in Figure 1 is covered by a first sound-insulating cover 36 and a second sound-insulating cover 37, and therefore has excellent sound insulation properties. For example, even if drainage passes through the inside, the structure makes it difficult for the drainage sound to leak to the outside. Furthermore, the first sound insulation cover 36 is attached to the outer surface of the intermediate section 13, and the second sound insulation cover 37 is attached to the outer surface of the lower connection section 15. Therefore, the first sound insulation cover 36 can be tightened to the outer surface of the intermediate section 13, and the second sound insulation cover 37 can be tightened to the outer surface of the lower connection section 15. Since the first sound insulation cover 36 and the second sound insulation cover 37 can be tightened individually, they can be fitted tightly to each other individually, and their individual positions can be finely adjusted. This prevents deformation and sagging of the sound insulation covers.

[0040] In the joint 1 shown in Figure 1, the manifold 12, intermediate section 13, and lower connection section 15 are arranged with a socket and a receiving end from top to bottom. Specifically, the receiving end 13b of the intermediate section 13 is provided on the outside of the socket 12A of the manifold 12, and the receiving end 15a of the lower connection section 15 is located on the outside of the socket 13c of the intermediate section 13. With the above configuration, the inner diameter of the outlet 12A of the manifold 12, the inner diameter of the main body 13a of the intermediate section 13, and the inner diameter of the large-diameter cylindrical section 15b are made approximately the same, allowing them to be connected without any steps. Because the connection is without steps, problems such as increased drainage resistance due to the drain hitting a step do not occur. In the configuration of Figure 1, the inner diameter of the large-diameter cylindrical section 15b is slightly larger than the inner diameter of the main body 13a, but the step that occurs at the joint between the outlet 13c of the intermediate section 13 and the large-diameter cylindrical section 15b is a downward step and therefore does not affect the drainage flow.

[0041] By the way, in the joint 1 of the first embodiment shown in Figure 1, the first swirling vane 16 is provided inside the manifold 12, but in addition to the first swirling vane 16, a flow deflection plate may also be provided so as to protrude inward diagonally up and down from the inner surface of the peripheral wall of the manifold 12. Separately from the first swirling vane 16, the flow deflection plate may be used to create a swirling or deflected flow in the drainage flow, thereby straightening the drainage flow and making it smoother. Also, if a flow deflection plate is provided, the first swirling vane 16 may be omitted.

[0042] Figure 2 shows another structural example of the first swivel vane 16 provided in the manifold 12 of the joint 1 shown in Figure 1. The structure shown in Figure 2 illustrates an example in which the first swirling blade 38 is formed on the inner surface side of the manifold 12 by creating an inwardly recessed recess 12d in a part of the peripheral wall of the manifold 12. The first rotating blade 38 may be integrated with the manifold 12, or it may be a separate component from the manifold 12.

[0043] Figure 3 shows a second structural example of the second swivel vane 17 provided at the lower connection portion 15 in the joint 1 shown in Figure 1. The structure shown in Figure 3 illustrates an example in which a second swivel blade 17 is formed inside the tapered portion 15c by creating an inwardly recessed recess 39 in a part of the wall portion that constitutes the tapered portion 15c of the lower connection portion 15. The second rotating blade 17 may be integrated with the lower connecting part 15, or it may be a separate component.

[0044] Figure 4 shows an interior member that is desirable as a swivel member when placed inside the lower connection part 15. This interior member 45 has a structure that can slow down and swivel the flowing drainage. The interior component 45 consists of a cylindrical portion 46, a reduction guide 47 formed below the cylindrical portion 46 with a phase shift of 180°, and a swivel guide 48. As shown in Figure 5, the cylindrical portion 46 of the interior member 45 is composed of a cylindrical body 46a that fits into the large-diameter cylindrical portion 15b, 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 vane members 48a, and these vane members 48a generate a swirling flow in the drainage.

[0045] Figure 5 shows a second embodiment of the joint according to the present invention. The joint 50 of the second embodiment has substantially the same configuration as the joint 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 an inclined portion 11c that is inclined diagonally upward. The other configurations are the same as those of the first embodiment. An inclined portion 11c extends integrally from the cylindrical portion 11a of the manifold 12, and a second cylindrical portion 11d is formed at the tip of the inclined portion 11c. The horizontal pipe 6 is connected to the second cylindrical portion 11d via a horizontal pipe joint member 11A. Because of the inclined portion 11c, the second cylindrical portion 11d is positioned slightly higher than the cylindrical portion 11a, and the horizontal pipe (not shown) connected to the inclined portion 11c is connected to the manifold 12 at a position slightly higher than the base end of the inclined portion 11c.

[0046] The configuration with an inclined section 11c creates a downward-sloping flow in the drainage when it flows from the horizontal pipe 6 into the collection section 12, allowing the drainage from the horizontal pipe 6 to be smoothly introduced into the intermediate section 13. As a result, there is less risk of the drainage from the horizontal pipe 6 blocking the bottom of the collection section 12 and less risk of obstructing the flow of drainage from the vertical drainage pipe 5.

[0047] As shown in the second embodiment in Figure 5, it is not necessary to orient the horizontal tube perpendicular to the axis of the cylindrical portion 11a; the connection portion of the horizontal tube may be connected to the cylindrical portion 11a such that it has a bent axis. In the joint 50 of the second embodiment, the other components are the same as those of the joint 1 of the first embodiment, so the same reference numerals are used for the same components and their descriptions are omitted. Regarding other effects and advantages, the joint 50 of the second embodiment can obtain the same effects and advantages as the joint 1 of the first embodiment.

[0048] Figure 6 shows a third embodiment of the joint according to the present invention. The joint 60 of this third embodiment has substantially the same configuration as the joint 1 of the first embodiment, but differs in that the sound insulation cover 61 wrapped around the outer circumference of the intermediate portion 13 and the outer circumference of the lower connection portion 15 has a two-layer structure consisting of an inner layer 61a made of fire-resistant mortar and an outer layer 61b made of fire-resistant sheet. The other configurations are the same as those of the first embodiment. As shown in Figure 6, a sound-insulating cover 61 having an inner layer 61a of fire-resistant mortar may be provided. Furthermore, if an inner layer 61a of fire-resistant mortar is provided, the outer layer 61b in the tapered section 15c may be omitted.

[0049] In the configuration shown in Figure 6, the configuration with an inner layer 61a of fire-resistant mortar and an outer layer 61b of fire-resistant sheet provides excellent sound insulation as well as excellent fire resistance.

[0050] Figure 7 shows a fourth embodiment of the joint according to the present invention. The joint 70 of the fourth embodiment has substantially the same configuration as the joint 1 of the first embodiment, but differs in that (1) the manifold portion 12 and the intermediate portion 13 are integrally molded, and (2) the first sound insulation cover 36 and the second sound insulation cover 37 are integrally molded. The other configurations are the same as those of the first embodiment. In the joint 70 of the fourth embodiment, the lower end portion 12c of the manifold 12 (the portion that was the socket 12A of the manifold 12) and the upper end portion of the intermediate portion 13 are connected in the joint 1 of the first embodiment. Furthermore, in this joint 70, the intermediate portion 13 and the lower connection portion 15 are covered by the third sound insulation cover 71. The third sound insulation cover 71 is formed by integrally forming the first sound insulation cover 36 and the second sound insulation cover 37. The third sound insulation cover 71 has an inner layer a and an outer layer b, similar to the first sound insulation cover 36 and the second sound insulation cover 37. The third sound insulation cover 71 may be divided into the first sound insulation cover 36 and the second sound insulation cover 37. In this case, for example, a configuration can be adopted in which the third sound insulation cover 71 is divided into the first sound insulation cover 36 and the second sound insulation cover 37 at the receiving opening 15a of the lower connection portion 15. This configuration can also be similarly adopted in the joint 80 of the fifth embodiment described later. In the joint 70 of the fourth embodiment, the other components are equivalent to those of the joint 1 of the first embodiment, so the same reference numerals are used for the same components and their descriptions are omitted. Regarding other effects and advantages, the joint 70 of the fourth embodiment can obtain the same effects and advantages as the joint 1 of the first embodiment.

[0051] Figure 8 shows a fifth embodiment of the joint according to the present invention. The joint 80 of the fifth embodiment has a configuration almost identical to that of the joint 70 of the fourth embodiment, but differs in that (1) a water-stopping rubber sheet 81 (water-stopping sheet, rubber ring) is provided, and (2) a vibration-damping rubber sheet 82 (vibration-damping rubber ring, vibration-damping sheet, vibration-damping ring) is provided. The other configurations are the same as those of the fourth embodiment.

[0052] The waterproof rubber sheet 81 is a rubber ring that spans the outer surface of the upper end of the outer layer b of the third sound insulation cover 71 (or the first sound insulation cover 36) and the outer surface of the lower end 12c of the manifold 12. The waterproof rubber sheet 81 prevents water from entering between, for example, the third sound insulation cover 71 (or the first sound insulation cover 36) and the lower end (insertion opening 12A) or intermediate part 13 of the manifold 12. In this embodiment, the waterproof rubber sheet 81 is a two-tiered cylindrical shape. The upper part of the waterproof rubber sheet 81 has a smaller diameter than the lower part and is fitted to the lower end 12c of the manifold 12. The lower part of the waterproof rubber sheet 81 is fitted to the upper end of the third sound insulation cover 71 (or the first sound insulation cover 36). Furthermore, it is also possible to use a double-ring configuration (double rubber ring) as the waterproof rubber sheet 81, which is arranged both inside and outside the upper end of the third sound insulation cover 71 (or the first sound insulation cover 36). In this case, the double rubber rings sandwich the upper end of the third sound insulation cover 71 (or the first sound insulation cover 36) in the radial direction.

[0053] The vibration-damping rubber sheet 82 is positioned on the outer circumferential surface of the intermediate section 13. The vibration-damping rubber sheet 82 suppresses vibrations of the joint 80 caused, for example, by impacts from drainage received by the third swivel vane 14. The vibration-damping rubber sheet 82 is annular in shape and is provided around the entire circumference of the intermediate section 13. The vibration-damping rubber sheet 82 is positioned between the intermediate section 13 and the thermal expansion material 35. On the outer circumferential surface of the intermediate section 13, the vibration-damping rubber sheet 82 and the thermal expansion material 35 are laminated in this order from the radial inside to the outside. The outer diameter of the portion of the joint 80 where the vibration-damping rubber sheet 82 and the thermal expansion material 35 are positioned (the outer diameter of the thermal expansion material 35) is less than or equal to the outer diameter of the socket 15a of the lower connection section 15. In the joint 80 of the fifth embodiment, the other components are equivalent to those of the joint 70 of the fourth embodiment, so the same reference numerals are used for the same components and their descriptions are omitted. Regarding other effects and advantages, the joint 80 of the fifth embodiment can obtain the same effects and advantages as the joint 70 of the fourth embodiment.

[0054] Although each embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration of the present invention is not limited to these embodiments, and modifications, combinations, deletions, etc. of the configuration that do not depart from the spirit of the present invention are also included in the present invention. [Explanation of Symbols]

[0055] S...Floor slab, 1...Joint, 2...Drainage equipment, 5...Drainage vertical pipe, 6...Horizontal pipe (drainage horizontal branch pipe), 10...Downstream pipe connection, 11...Horizontal pipe connection, 12...Collection, 12A...Socket, 13...Intermediate section, 13b...Receiving port, 13c...Socket, 15...Lower connection, 15a...Receiving port, 16...First swivel vane (first swivel member), 17...Second swivel vane (second swivel member), 19...Through hole, 20...Upper receiving port member, 36...First sound insulation cover, 37...Second sound insulation cover, 50, 60...Joint.

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 lower connection part connects to the vertical pipe extending from the lower floor, The aforementioned manifold and the aforementioned lower connection are connected, and an intermediate section with a larger inner diameter than the aforementioned vertical pipe is provided. Equipped with, At least the intermediate portion is embedded in the through-hole of the floor slab, The assembly portion, the intermediate portion, or the lower connecting portion are made of resin. A first pivoting member is provided inside either the collection section or the intermediate section. A joint characterized in that a second swivel member is provided inside the lower connecting portion.

2. The joint according to claim 1, wherein a swivel member is provided inside the respective manifold and intermediate sections.

3. The joint according to claim 1 or claim 2, wherein a thermal expansion material is wrapped around the outer circumference of the intermediate portion.

4. The upper part of the intermediate section is a socket into which the lower part of the manifold is inserted. The joint according to any one of claims 1 to 3, wherein the lower part of the intermediate portion is a socket that is inserted into the upper part of the lower connecting portion.

5. The joint according to any one of claims 1 to 4, wherein a sound-insulating cover is wrapped around the outer circumference of the intermediate portion, and the outer diameter of the intermediate portion around which the sound-insulating cover is wrapped is 175 to 190 mm.

Images