Drainage manifolds and buildings

Abstract

This invention provides a configuration for resin-made drainage manifolds that can prevent water and other liquids from accumulating inside the soundproof cover. [Solution] The drainage manifold 1 has a pipe body 10 and at least one branch pipe connection part 40 that connects a branch pipe 3 to the pipe body 10. In the drainage manifold 1, the pipe body 10 is routed so as to penetrate the floor slab X of the building T. The drainage manifold 1 is made of resin. The drainage manifold 1 has a sound-insulating cover 12 located on the outer circumferential surface of the pipe body 10 and a cover member 18 located on the outer circumferential surface of the pipe body 10 in one axial direction relative to the sound-insulating cover 12. The sound-insulating cover 12 has a projection 1221 that protrudes radially inward from the inner circumferential surface of the sound-insulating cover 12. The sound-insulating cover 12 is positioned on the outer circumferential surface of the pipe body 10 such that the projection 1221 is located in a position that overlaps radially with respect to the cover member 18.

Description

Technical Field

[0001] The present invention relates to a resin drainage collector pipe and a building, which has a pipe body and at least one lateral branch pipe connection part for connecting a lateral branch pipe to the pipe body, and the pipe body is arranged to penetrate a floor slab of a building.

Background Art

[0002] A resin drainage collector pipe having a pipe body and at least one lateral branch pipe connection part for connecting a lateral branch pipe to the pipe body, and the pipe body is arranged to penetrate a floor slab of a building is known. As such a drainage collector pipe, for example, Patent Document 1 discloses a covered collecting joint made of resin configured to be inserted into a floor slab.

[0003] The covered collecting joint of Patent Document 1 includes a collecting joint, a sound insulation cover covering the collecting joint, and a buffer material.

[0004] The collecting joint includes an upper connecting pipe and a lower connecting pipe connected to the upper connecting pipe. The sound insulation cover has flexibility and includes an upper sound insulation cover wound around the upper connecting pipe from the outside in the radial direction, and a lower sound insulation cover having a tubular shape through which the lower connecting pipe is inserted.

[0005] The lower sound insulation cover includes a pipe body and a sheet body attached to the inner peripheral surface of the pipe body. A locking portion is provided on the inner peripheral surface of the pipe body. The locking portion supports the sheet body from below.

[0006] The buffer material is adhesively fixed to the outer peripheral surface of the collecting joint. The buffer material is disposed between the outer peripheral surface of the collecting joint and the inner peripheral surface of the pipe body. The buffer material supports the locking portion from below. Thereby, detachment of the lower sound insulation cover from the collecting joint is suppressed.

Prior Art Documents

Patent Documents

[0007] [Patent Document 1] Patent No. 7044609 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] By the way, while the drainage manifold is stored, or after the drainage manifold is installed in the building's floor slab, water droplets may form on the drainage manifold due to condensation, or rain may blow into the storage area before installation and cause rainwater to accumulate. In the covered manifold joint of Patent Document 1, there is no gap between the lower connecting pipe, the sheet body, the locking part, and the cushioning material, so if water or the like accumulates in the space formed by the lower connecting pipe, the sheet body, the locking part, and the cushioning material, it is difficult for the water or the like to be discharged to the outside of the space.

[0009] Therefore, there is a need to prevent water and other liquids from accumulating inside the soundproof cover attached to the drainage manifold.

[0010] The objective of the present invention is to realize a configuration in a resin-made drainage manifold that can suppress the accumulation of water or other substances inside a sound-insulating cover attached to the drainage manifold. [Means for solving the problem]

[0011] A drainage manifold according to one embodiment of the present invention comprises a pipe body and at least one lateral branch pipe connection portion for connecting a lateral branch pipe to the pipe body. The drainage manifold is a resin drainage manifold that is installed so that the pipe body penetrates the floor slab of a building. The drainage manifold comprises a sound-insulating cover located on the outer circumferential surface of the pipe body and a cover member located on the outer circumferential surface of the pipe body in one axial direction relative to the sound-insulating cover. The sound-insulating cover has a projection that protrudes radially inward from the inner circumferential surface of the sound-insulating cover. The sound-insulating cover is arranged on the outer circumferential surface of the pipe body such that the projection is located at a position that overlaps radially with respect to the cover member or at a position that is spaced apart axially (first configuration).

[0012] In the above configuration, if the protruding portion overlaps the cover member in the radial direction, the intrusion of water and the like can be suppressed by the protruding portion and the cover member.

[0013] In the above configuration, if the protruding portion is spaced apart from the cover member in the axial direction, a gap is formed between the protruding portion and the cover member.

[0014] In the above case, when the sound insulation cover is not spaced apart in the axial direction from the cover member, the sound insulation cover and the cover member can prevent the intrusion of water, etc. Also, in the above case, when the sound insulation cover including the protrusion is spaced apart in the axial direction from the cover member, water, etc. accumulated inside the sound insulation cover can be discharged through the gap.

[0015] Therefore, it is possible to prevent water or other substances from accumulating inside the soundproof cover.

[0016] In the first configuration described above, the sound-insulating cover has an axial end located on one side in the axial direction from the protrusion. In the drain manifold, the protrusion and the axial end are located in a position that overlaps radially with respect to the cover member, or the protrusion is located in a position that is spaced apart axially from the cover member, while the axial end is located in a position that overlaps radially with respect to the cover member or is spaced apart axially (second configuration).

[0017] In the above configuration, if the protrusion and the axial end are located in a position that overlaps radially with respect to the cover member, the intrusion of water or the like can be suppressed by the protrusion or the axial end and the cover member.

[0018] In the above configuration, if the protruding portion is positioned at a distance from the cover member in the axial direction, while one axial end is positioned at a distance from the cover member in the radial direction, the intrusion of water or the like into the sound-insulating cover can be suppressed by the one axial end of the sound-insulating cover and the cover member.

[0019] Furthermore, in the above case, if the sound-insulating cover, including the axial end, is spaced apart from the cover member in the axial direction, water or the like accumulated inside the sound-insulating cover can be discharged through the gap.

[0020] Therefore, it is possible to prevent water or other substances from accumulating inside the soundproof cover.

[0021] In the second configuration described above, the sound insulation cover comprises a sound-absorbing sheet located radially outward from the pipe body, and a cylindrical outer casing located radially outward from the sound-absorbing sheet and extending axially in one direction more than the sound-absorbing sheet in the axial direction. The outer casing includes the protruding portion and the axial end, the protruding portion protrudes radially inward from the inner circumferential surface of the outer casing at a position axially one direction from the sound-absorbing sheet, with a protruding length smaller than the radial thickness of the sound-absorbing sheet. The axial end is located axially one direction from the sound-absorbing sheet and the protruding portion. The sound insulation cover is arranged on the outer circumferential surface of the pipe body such that the protruding portion is positioned to contact the cover member (third configuration).

[0022] In the above configuration, the protruding portion comes into contact with the cover member. This makes it possible to more reliably prevent water or other substances from entering the sound-insulating cover beyond the protruding portion.

[0023] In any one of the first to third configurations described above, the cover member is composed of a cushioning material attached to the outer circumferential surface of the pipe body. The protruding portion overlaps the cover member in the radial direction (fourth configuration).

[0024] According to the above configuration, the protruding portion contacts the buffer material. As a result, the buffer material is deformed, and the cover member can be more closely attached to the protruding portion. Therefore, the intrusion of water or the like into the sound insulation cover can be more reliably suppressed by the cover member and the protruding portion.

[0025] In the building according to an embodiment of the present invention, the drainage collecting pipe according to the first configuration is arranged in a state of penetrating the floor slab (fifth configuration).

[0026] According to the above configuration, it is possible to more reliably prevent the intrusion of water or the like into the sound insulation cover, or to provide a building provided with a drainage collecting pipe that can discharge water or the like accumulated in the sound insulation cover.

Effect of the Invention

[0027] The drainage collecting pipe according to an embodiment of the present invention includes a sound insulation cover located on the outer peripheral surface of the pipe body, and a cover member located on one side in the axial direction with respect to the sound insulation cover on the outer peripheral surface of the pipe body. The sound insulation cover has a protruding portion that protrudes radially inward from the inner peripheral surface of the sound insulation cover. The sound insulation cover is arranged on the outer peripheral surface of the pipe body such that the protruding portion is located at a position overlapping or axially spaced from the cover member when viewed in the radial direction.

[0028] Thereby, the intrusion of water or the like into the sound insulation cover can be suppressed, or the water or the like accumulated in the sound insulation cover can be discharged. Therefore, it is possible to suppress the accumulation of water or the like in the sound insulation cover.

Brief Description of the Drawings

[0029] s [Figure 1] FIG. 1 is a perspective view showing a schematic configuration of a drainage collecting pipe. [Figure 2] FIG. 2 is a cross-sectional view showing a cross-section of the drainage collecting pipe cut along line II-II in FIG. 1. [Figure 3] FIG. 3 is a process diagram showing an example of a construction method of the drainage collecting pipe. [Figure 4]Figure 4 is a partially enlarged view of the schematic configuration of the drainage manifold according to Modification 1. [Figure 5] Figure 5 is a partially enlarged view of the schematic configuration of the drainage manifold according to Modification 2. [Figure 6] Figure 6 is a partially enlarged view of the schematic configuration of the drainage manifold according to Modification 3. [Figure 7] Figure 7 is a cross-sectional view showing the cross-section of the drainage manifold cut along the line VII-VII in Figure 6. [Modes for carrying out the invention]

[0030] The following describes each embodiment with reference to the drawings. In each drawing, the same parts are denoted by the same reference numerals, and the description of those parts will not be repeated. Note that the dimensions of the components in each drawing do not faithfully represent the dimensions of the actual components or the dimensional ratios of each component.

[0031] In the following explanation, the axial direction of the pipe body 10 of the drainage manifold 1 is referred to as the "axial direction." The radial direction of the pipe body 10 is referred to as the "radial direction." The circumferential direction of the pipe body 10 is referred to as the "circumferential direction."

[0032] Furthermore, in the following explanation, the expressions "fix," "connect," and "attach" (hereinafter referred to as "fixing, etc.") include not only cases where components are directly fixed to each other, but also cases where they are fixed to each other via other components. In other words, in the following explanation, the expressions "fixing, etc." include both direct and indirect fixing of components to each other.

[0033] [Embodiment] (Drainage collection pipe) Figure 1 is a perspective view showing the schematic configuration of the drainage manifold 1. Figure 2 is a cross-sectional view showing the drainage manifold 1 cut along the line II-II in Figure 1.

[0034] As shown in Figures 1 and 2, the drainage manifold 1 comprises a vertical pipe body 10, an upper vertical pipe connection 20, a lower vertical pipe connection 30, a horizontal branch pipe connection 40, a sound-insulating cover 12, and a cover member 18. In this embodiment, the drainage manifold 1 is made of a resin material. The drainage manifold 1 may be formed integrally by injection molding or the like, or it may be made up of multiple parts.

[0035] As shown in Figure 2, the drainage manifold 1 is a manifold joint installed at the junction of the drainage riser 2 and the drainage branch pipe 3 in a multi-story building T such as an apartment building or commercial building.

[0036] The drainage manifold 1 is installed in a through-hole X1 that penetrates the floor slab X of the building T vertically. The drainage riser 2 is located above or below the floor slab X and extends vertically, with its end connected to the drainage manifold 1. The drainage lateral branch pipe 3 extends along the upper surface of the floor slab X, with its end connected to the drainage manifold 1.

[0037] The upper riser connection 20 is located at the upper end of the drain manifold 1, and the lower end of the upper floor drain riser 2 is connected to it. The lower riser connection 30 is located at the lower end of the drain manifold 1, and the upper end of the lower floor drain riser 2 is connected to it. The horizontal branch pipe connection 40 is located on the upper side of the drain manifold 1, and the end of the horizontal drain branch pipe 3 is connected to it.

[0038] As a result, the wastewater from the upper floors flowing through the upper-side drain riser 2 flows from the upper-side riser connection 20 into the drain manifold 1, and then flows down to the lower floors via the lower-side drain riser 2 connected to the lower-side riser connection 30 of the drain manifold 1. In addition, the wastewater collected in the horizontal drain branch pipe 3 flows from the horizontal branch pipe connection 40 into the drain manifold 1, where it merges with the wastewater from the upper floors, and then flows down to the lower floors via the lower-side drain riser 2.

[0039] As shown in Figures 1 and 2, the pipe body 10 is formed in a substantially cylindrical shape extending along the axis P1. The upper riser connection 20, the lower riser connection 30, and the lateral branch pipe connection 40 are also each formed in a cylindrical shape. The upper riser connection 20 is connected to the upper end of the pipe body 10. The lower riser connection 30 is connected to the lower end of the pipe body 10. The lateral branch pipe connection 40 is connected to the upper side of the pipe body 10. In this embodiment, the three lateral branch pipe connection 40 are each connected to the pipe body 10 at positions 90 degrees apart when viewed axially from the pipe body 10. Furthermore, the three lateral branch pipe connection 40 are connected to the pipe body 10 at the same axial position relative to the pipe body 10. The upper riser connection 20, the lower riser connection 30, and the lateral branch pipe connection 40 are each connected to the pipe body 10 so as to connect to the internal space of the pipe body 10.

[0040] In this embodiment, the upper riser pipe connection 20 is constructed separately from the pipe body 10 and is connected to the upper end of the pipe body 10. The lateral branch pipe connection 40 is also constructed separately from the pipe body 10 and is connected to the upper side of the pipe body 10. The lower riser pipe connection 30 is formed integrally with the pipe body 10. The upper riser pipe connection 20 and the lateral branch pipe connection 40 may be provided integrally with the pipe body 10. The lower riser pipe connection 30 may be constructed separately from the pipe body 10 and connected to the pipe body 10.

[0041] Furthermore, the pipe body 10 has multiple (three in this embodiment) branch pipe connection openings 13 at its upper part, to which the branch pipe connection parts 40 are connected. The branch pipe connection openings 13 protrude cylindrically from the outer circumferential surface of the upper part of the pipe body 10. The branch pipe connection parts 40 are connected to the branch pipe connection openings 13.

[0042] The pipe body 10 has a reduced diameter section 11 at its lower end, where the inner and outer diameters gradually decrease from the axial center towards the lower end. The inner diameter of the upper part of the pipe body 10 is smaller than the inner diameter of the axial center. The lower riser connection section 30 is connected to the lower end of the reduced diameter section 11.

[0043] The sound insulation cover 12 is located on the outer circumferential surface of the axial central and lower parts of the pipe body 10. The sound insulation cover 12 is tapered in diameter along the reduced diameter portion 11 of the pipe body 10, decreasing from the axial central portion towards the lower end. The sound insulation cover 12 has a sound-absorbing sheet 121 and an outer casing 122.

[0044] The sound-absorbing sheet 121 is located radially outward from the pipe body 10. The sound-absorbing sheet 121 is made of, for example, a porous sound-absorbing material. Known materials can be used for the sound-absorbing material. The sound-absorbing sheet 121 may also be a vibration insulator formed of, for example, fire-resistant inorganic fibers.

[0045] The outer casing 122 is a cylindrical member located radially outward from the sound-absorbing sheet 121 and extending axially in one direction more than the sound-absorbing sheet 121. The outer casing 122 is made of, for example, a sound-insulating material. Known materials can be used for the sound-insulating material.

[0046] The cover member 18 is located on the outer circumferential surface of the pipe body 10, on one side in the axial direction relative to the sound insulation cover 12. The cover member 18 is attached to the outer circumferential surface of the pipe body 10. The cover member 18 is provided around the entire circumference of the outer circumferential surface of the pipe body 10. The cover member 18 is made of, for example, a cushioning material.

[0047] (Detailed structure of the drainage manifold) Referring to Figure 2, the detailed structure of the drainage manifold 1 will be described. The outer casing 122 of the sound insulation cover 12 has a protruding portion 1221 and one axial end portion 1222.

[0048] The protrusions 1221 protrude radially inward from the inner circumferential surface of the outer casing 122 at a position axially relative to the sound-absorbing sheet 121, with a protrusion length smaller than the radial thickness of the sound-absorbing sheet 121. The protrusions 1221 are provided around the entire circumference of the inner circumferential surface of the outer casing 122 of the sound-insulating cover 12.

[0049] The axial end portion 1222 is located axially to the left of the sound-absorbing sheet 121 and the protrusion 1221.

[0050] The protrusion 1221 and the axial end 1222 are positioned to overlap the cover member 18 in the radial direction. The protrusion 1221 is in contact with the outer circumferential surface of the cover member 18, while the axial end 1222 is spaced radially outward from the cover member 18.

[0051] In other words, the sound-insulating cover 12 is positioned on the outer surface of the pipe body 10 such that the protruding portion 1221 is in contact with the cover member 18.

[0052] Thus, when the protrusion 1221 is positioned to overlap the cover member 18 in the radial direction, the protrusion 1221 comes into contact with the cover member 18, and the protrusion 1221 and the cover member 18 can prevent water and other substances from entering the sound-insulating cover 12.

[0053] Therefore, it is possible to prevent water or other liquids from accumulating inside the soundproof cover 12.

[0054] Furthermore, in the above configuration, since the protrusion 1221 is in contact with the entire circumference of the cover member 18, it is possible to more reliably prevent water or other substances from entering the sound-insulating cover 12 beyond the protrusion 1221.

[0055] In the above configuration, the outer casing 122 of the sound insulation cover 12 has an axial end 1222 that is located on one side in the axial direction from the protrusion 1221. Also, as described above, the protrusion 1221 and the axial end 1222 are located in positions that overlap radially with respect to the cover member 18. As described above, the protrusion 1221 is in contact with the outer circumferential surface of the cover member 18, while the axial end 1222 is spaced radially outward from the cover member 18.

[0056] This allows water droplets and the like flowing along the outer surface of the exterior part 122 to be guided downward by the axial end 1222. As a result, the waterproofness between the sound insulation cover 12 and the cover member 18 can be improved. Therefore, the accumulation of water and the like inside the sound insulation cover 12 can be more effectively suppressed.

[0057] One axial end 1212 of the sound-absorbing sheet 121 is in contact with the cover member 18 which includes the cushioning material. The one axial end 1212 of the sound-absorbing sheet 121 may also be in axial contact with the protrusion 1221.

[0058] According to the above configuration, the protrusion 1221 that overlaps the cover member 18 in the radial direction comes into contact with the cushioning material that makes up the cover member 18. As a result, the cushioning material deforms, allowing the cover member 18 to adhere more tightly to the protrusion 1221. Therefore, the cover member 18 and the protrusion 1221 can more reliably suppress the intrusion of water and other substances into the sound insulation cover 12.

[0059] Furthermore, a building T in which the drainage manifold 1 is arranged to penetrate the floor slab X can provide a building T that can more reliably prevent water and other substances from entering the sound insulation cover 12.

[0060] (Installation method for drainage manifolds) Figure 3 is a process diagram showing an example of the installation method for the drainage manifold 1. As shown in Figure 3, first, the drainage manifold 1, with the sound-insulating cover 12 attached to the pipe body 10, is inserted into a through-hole X1 that penetrates the floor slab X of the building T vertically (step S1). As a result, the drainage manifold 1 is positioned relative to the floor slab X of the building T with the pipe body 10 penetrating the floor slab X.

[0061] The sound insulation cover 12 may be attached to the pipe body 10 in advance before construction, or it may be attached to the pipe body 10 during construction by, for example, the following procedure. Referring to Figure 2, first, the flat sound-absorbing sheet 121 is deformed into a cylindrical shape. Next, the deformed cylindrical sound-absorbing sheet 121 is inserted into the outer casing 122 from above, and moved until one axial end 1212 of the sound-absorbing sheet 121 contacts the protruding part 1221 of the outer casing 122. In this way, the sound insulation cover 12 is attached to the pipe body 10 by inserting the pipe body 10 into the sound insulation cover 12 with the sound-absorbing sheet 121 inserted into the outer casing 122. The cover member 18 may be attached to the pipe body 10 before the sound insulation cover 12 is attached to the pipe body 10, or it may be attached to the pipe body 10 after the sound insulation cover 12 is attached to the pipe body 10.

[0062] Next, the upper and lower floor drain risers 2 and drain branch pipes 3 are connected to the drain manifold 1 (step S2). Specifically, the lower riser connection 30 of the drain manifold 1 is connected to the upper end of the lower floor drain riser 2. The penetration hole X1 in the floor slab X is then sealed with cement mortar 81, and the lower riser connection 30 and the lower floor drain riser 2 are covered with drain manifold covering material 82. Furthermore, the upper riser connection 20 is connected to the lower end of the upper floor drain riser 2, and the branch pipe connection 40 is connected to the end of the drain branch pipe 3. With these steps, the construction of the drain manifold is completed.

[0063] When inserting the drainage manifold 1 into the through-hole X1, the sound-insulating cover 12 may move from a position where it does not overlap the cover member 18 in the radial direction to a position where it does overlap.

[0064] [Example 1] Figure 4 shows a schematic configuration of a drain manifold 1A according to Modification 1. In the drain manifold 1 according to Embodiment 1 described above, the protruding portion 1221 is located in a position that overlaps with the cover member 18 in the radial direction, whereas in the drain manifold 1A according to Modification 1, the protruding portion 1221 is located in a position that is spaced apart from the cover member 18 in the axial direction, which is different from Embodiment 1. In the following, components similar to those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted, and only the parts that differ from Embodiment 1 will be described.

[0065] As shown in Figure 4, the drainage manifold 1A comprises a vertical pipe body 10, a sound-insulating cover 12, and a cover member 18. The sound-insulating cover 12 comprises a sound-absorbing sheet 121 and an outer casing 122.

[0066] The protrusion 1221 is located at a distance D1 in the axial direction from the cover member 18. A portion of the axial end 1222 is located in a position that overlaps the cover member 18 in the radial direction.

[0067] As described above, when the protrusion 1221 is spaced apart from the cover member 18 in the axial direction, a gap SP1 is formed between the protrusion 1221 and the cover member 18. In this case, a part of the sound insulation cover 12 and the cover member 18 are in close contact, so the intrusion of water, etc. into the gap SP1 can be suppressed. In other words, the intrusion of water, etc. can be suppressed by the axial end 1222 of the sound insulation cover 12 and the cover member 18.

[0068] In addition, in the construction method of the drainage manifold 1 shown in Figure 3, when inserting the drainage manifold 1 into the through hole X1, the protruding portion 1221 may move to a position axially separated from the position where it is in contact with the cover member 18 by a distance D1.

[0069] [Differentiation 2] Figure 5 shows a partial schematic configuration of the drainage manifold 1B according to Modification 2. The drainage manifold 1B according to Modification 2 differs from the drainage manifold 1A according to Modification 1 in that the entire sound insulation cover 12, including one axial end 1222, is spaced axially apart from the cover member 18. In the following, components similar to those in Modification 1 are denoted by the same reference numerals and their explanations are omitted, and only the parts that differ from Modification 1 will be described.

[0070] As shown in Figure 5, the drainage manifold 1B comprises a vertical pipe body 10, a sound-insulating cover 12, and a cover member 18. The sound-insulating cover 12 comprises a sound-absorbing sheet 121 and an outer casing 122.

[0071] The protrusion 1221 is located at a distance D1 in the axial direction relative to the cover member 18. The axial end 1222 is located at a distance D2 in the axial direction relative to the cover member 18. Therefore, a gap SP21 is formed between the protrusion 1221 and the cover member 18. Additionally, a gap SP22 is located between the cover member 18 and the axial end 1222.

[0072] As described above, when the sound insulation cover 12, including the axial end 1222, is spaced apart from the cover member 18 in the axial direction, water and other substances accumulated inside the sound insulation cover 12 can be discharged through the gap SP22 located between the cover member 18 and the axial end 1222.

[0073] [Difference 3] Figure 6 is a perspective view showing the schematic configuration of the drainage manifold 1C. Figure 7 is a cross-sectional view showing the cross-section of the drainage manifold 1C cut along the line VII-VII in Figure 6. The drainage manifold 1C according to Modification 3 has a different axial length from the drainage manifold 1 according to Embodiment 1. The drainage manifold 1 according to Embodiment 1 is, for example, mainly used on upper floors, while the drainage manifold 1C according to Modification 3 is, for example, mainly used on middle and lower floors. In the following, components similar to those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted, and only the parts that differ from Embodiment 1 will be described.

[0074] As shown in Figures 6 and 7, the drainage manifold 1C comprises a vertical pipe body 10, an upper vertical pipe connection 20, a lower vertical pipe connection 30, a horizontal branch pipe connection 40, a sound insulation cover 12, and a cover member 18.

[0075] As shown in Figure 7, the outer casing 122 of the sound insulation cover 12 has a protrusion 1221 and one axial end 1222. The sound insulation cover 12 is positioned on the outer circumferential surface of the pipe body 10 such that the protrusion 1221 is in contact with the cover member 18.

[0076] The axial length of the pipe body 10 of the drainage manifold 1C according to Modification 3 is shorter than the axial length of the pipe body 10 of the drainage manifold 1 according to Embodiment 1. Therefore, the drainage manifold C can be suitably arranged for the middle and lower floors.

[0077] (Other embodiments) Although embodiments of the present invention have been described above, the embodiments described above are merely examples for carrying out the present invention. Therefore, the invention is not limited to the embodiments described above, and it is possible to carry out the invention by appropriately modifying the embodiments described above without departing from the spirit of the invention.

[0078] In Embodiment 1 and Modifications 1 to 3 (hereinafter referred to as "Each Embodiment"), the three lateral branch pipe connections 40 are each connected to the pipe body 10 at positions 90 degrees apart when viewed in the axial direction of the pipe body 10. However, the pipe body may have two or fewer lateral branch pipe connections connected to it. The pipe body may not have any lateral branch pipe connections connected to it. Furthermore, the spacing between the lateral branch pipe connections connected to the pipe body may be at angles other than 90 degrees when viewed in the axial direction of the pipe body.

[0079] In each of the above embodiments, the multiple lateral branch pipe connections 40 are connected to the pipe body 10 at the same axial position. However, the multiple lateral branch pipe connections may be connected to the pipe body at different axial positions.

[0080] In each of the above embodiments, the branch pipe connection portion 40 is connected to the branch pipe connection opening 13 provided in the main pipe body 10. However, the branch pipe connection portion may be directly connected to the main pipe body.

[0081] In each of the above embodiments, the sound insulation cover 12 has a sound-absorbing sheet 121 and an exterior part 122. However, the sound insulation cover may have another functional sheet. The sound insulation cover may have a vibration-damping sheet. The vibration-damping sheet may be located between the pipe body and the sound-absorbing sheet.

[0082] In each of the above embodiments, the cover member 18 is made of, for example, a cushioning material. However, the cover member may be made of a material other than a cushioning material.

[0083] In each of the above embodiments, the cover member 18 is provided around the entire circumference of the outer surface of the pipe body 10. The protrusion 1221 is provided around the entire circumference of the inner surface of the outer casing 122 of the sound insulation cover 12. However, the cover member may be provided only on a part of the outer surface of the pipe body in the circumferential direction. The protrusion may be provided on a part of the inner surface of the outer casing of the sound insulation cover in the circumferential direction. [Industrial applicability]

[0084] The present invention is applicable to a resin drainage manifold having a vertical pipe body and a lateral branch pipe connection portion that extends laterally from the pipe body, wherein the pipe body is installed so as to penetrate the floor slab of a building. [Explanation of Symbols]

[0085] 1 Drainage collection pipe 2 Drain standpipe 3 Drainage side branch pipe 10 Pipe body 12 Soundproofing Cover 121 Sound-absorbing sheet 1212 One end in the axial direction 122 Exterior part 1221 Protrusion 1222 One end in the axial direction 13. Opening for connecting lateral branch pipes 18 Cover component 20 Upper riser connection 30 Lower riser connection 40. Horizontal branch pipe connection 81 Cement mortar 82 Drainage collecting pipe covering material SP1, SP21, SP22 gap T Building X Floor slab X1 through hole P1 Axis of the drainage manifold

Claims

1. A resin drainage manifold having a pipe body and at least one branch pipe connection portion for connecting a branch pipe to the pipe body, wherein the pipe body is installed so as to penetrate the floor slab of a building, A sound-insulating cover located on the outer surface of the pipe body, A cover member located on the outer surface of the pipe body in one axial direction relative to the sound insulation cover, It has, The aforementioned soundproof cover is The sound-insulating cover has a protruding portion that extends radially inward from the inner circumferential surface, The protruding portion is positioned on the outer surface of the pipe body such that it overlaps with the cover member in the radial direction, or the entire sound-insulating cover is positioned such that it is spaced apart from the cover member in the axial direction. The aforementioned drainage manifold is installed with one end in the axial direction aligned downwards in the vertical direction of the building. Drainage collection pipe.

2. In the drainage manifold according to claim 1, The sound-insulating cover has one axial end located on one side in the axial direction from the protrusion, The aforementioned protrusion and the aforementioned axial end are positioned to overlap with the cover member in the radial direction, or The protruding portion is positioned at a distance from the cover member in the axial direction, while one end of the axial portion is positioned at a distance from the cover member in the axial direction. Drainage collection pipe.

3. In the drainage manifold according to claim 2, The aforementioned soundproof cover is A sound-absorbing sheet located radially outward from the main body of the pipe, A cylindrical outer casing is located radially outward from the sound-absorbing sheet and extends axially in one direction more than the sound-absorbing sheet in the axial direction, It has, The exterior portion includes the protruding portion and the axial end portion, The aforementioned protrusions extend radially inward from the inner circumferential surface of the outer casing at a position on one axial side relative to the sound-absorbing sheet, with a protrusion length smaller than the radial thickness of the sound-absorbing sheet. The aforementioned axial end is located axially to the side of the sound-absorbing sheet and the protruding portion. The sound-insulating cover is positioned on the outer surface of the pipe body such that the protruding portion is in contact with the cover member. Drainage collection pipe.

4. In a drainage manifold according to any one of claims 1 to 3, The cover member is composed of a cushioning material attached to the outer surface of the pipe body. The aforementioned protrusion overlaps the cover member in the radial direction, Drainage collection pipe.

5. A building in which the drainage manifold described in claim 1 is arranged to penetrate the floor slab.

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