JP2021167557A - Drainage piping joint - Google Patents

Abstract

To provide a drainage piping joint capable of exhibiting optimum damping performance, vibration insulation performance, and sound insulation performance.SOLUTION: A drainage piping joint 100 includes a pipe body 110 to be arranged in a through-hole of a floor slab S when installed in a building, an upward vertical pipe connection part 120 to which a drainage vertical pipe 520 protruded upward from the floor slab S for drain water from upstairs to flow thereinto is connected, a drainage pipe connection part 130 to which a drainage vertical pipe 530 protruded downward from the floor slab S for the drain water to flow downstairs therefrom is connected, and a lateral branch pipe connection part 140 to which a drainage lateral branch pipe 510 is connected above the floor slab S. On the outer periphery of the pipe body 110, an outer layer member 700 is provided so as to be wound thereon. The outer layer member 700 includes a three-layer structure consisting of a damping material 714, a vibration insulation body 720, and a sound insulation cover 730 sequentially from the inner layer.SELECTED DRAWING: Figure 5

Description

The present invention relates to a drainage pipe joint provided through a floor slab of a building, and more particularly to a drainage pipe joint capable of exhibiting optimum vibration damping performance, vibration insulation performance, and sound insulation performance.

Water supply and drainage facilities will be installed in apartment buildings and office buildings. A typical drainage facility is a drainage pipe structure equipped with vertical pipes that penetrate each floor of the building, horizontal pipes installed in each floor, and drainage pipe joints that connect them. Widely known.
Then, such a drainage pipe joint includes a pipe body arranged in the through hole of the floor slab and a drainage vertical pipe protruding above the floor slab to allow drainage from the upper floor to flow in when the drainage pipe joint is installed in a building. The upper pipe connection part to be connected, the lower pipe connection part to connect the drainage stand pipe that protrudes below the floor slab and allows the drainage to flow down to the lower floor, and the horizontal branch pipe to connect the drainage lateral branch pipe above the floor slab. It has a connection part. Further, many pipe bodies are provided with a portion (for example, a swivel blade, a drift plate, etc.) that changes the flow of drainage in the drainage pipe joint. Further, as such a drainage pipe joint, one formed of one or a plurality of resin injection-molded products is widely known.

In a building equipped with a drainage pipe structure using such a drainage pipe joint, when a fire or the like occurs downstairs, flames, soot, and toxic gas are emitted to the upper floor through the burnt or melted part of the drainage pipe structure. In order to prevent the drainage pipe joint from flowing out to, a heat-expandable fireproof material is separately provided on the outer circumference of the pipe material or buried in the wall of the pipe material to provide a through hole for the floor slab in the event of a fire. The state of being closed by this heat-expandable fireproof material is maintained.

As such a technique, Japanese Patent No. 6576711 (Patent Document 1) is a drainage pipe joint that is piped through a floor slab of a building, and is a joint body to which the drainage pipe is connected and the joint body. A first covering material for covering the outer surface of the portion penetrating the floor slab is provided, the joint body is made of a thermoplastic resin, and the first covering material is arranged in this order from the inside. Between the first sound absorbing layer made of a sponge material, the second sound absorbing layer made of an aggregate of inorganic fibers, the waterproof and sound insulating skin layer, and the first sound absorbing layer and the second sound absorbing layer. Disclosed is a drainage pipe joint that is sandwiched and integrally includes a thermal expansion material that is provided around the joint body in an annular shape.

Japanese Patent No. 6576711

In the drainage joint disclosed in Patent Document 1 described above,
The outer surface of the portion of the joint body that penetrates the floor slab is covered with the first covering material, and the outer surface of the portion protruding from the upper surface of the floor slab is covered with the second covering material. Kara ・ First sound absorbing layer (urethane foam) made of sponge material
-A second sound absorbing layer (glass wool) composed of an aggregate of thermal expansion material and inorganic fibers sandwiched between the first sound absorbing layer and the second sound absorbing layer.
-Waterproof and sound-insulating skin layer (aluminum glass cloth)
(2) The composition of the second covering material is from the inside ・ Upper sound absorbing layer (felt) made of sound absorbing material
-Upper sound insulation layer (butyl rubber) made of sound insulation material
The structure is disclosed.

However, in the structure disclosed in Patent Document 1, the thermal expansion material is provided in an annular shape around the large-diameter straight pipe portion of the joint body, and the thermal expansion material has a first sound absorbing layer and a second sound absorbing layer. It only discloses that it is sandwiched between layers and that the thermal expansion material contained in the first coating material is backfilled with mortar, which provides optimum vibration damping performance and vibration insulation performance. -It cannot be said that sound insulation performance can be exhibited.

The present invention has been developed in view of the above-mentioned problems, and an object of the present invention is a drainage pipe joint provided through a floor slab of a building, which has optimum vibration damping performance and vibration. It is to provide a drainage pipe joint capable of exhibiting insulation performance and sound insulation performance.

In order to achieve the above object, the drainage pipe joint according to the present invention takes the following technical measures.
That is, the drainage pipe joint according to the present invention has a pipe body arranged in a through hole of a floor slab and a drainage stand that protrudes above the floor slab and allows drainage from an upper floor to flow in when the drainage pipe joint is installed in a building. A horizontal pipe connecting portion for connecting a pipe, a drainage pipe connecting portion for connecting a drainage pipe which protrudes below the floor slab and drains drainage to the lower floor, and a horizontal branch pipe for connecting a drainage lateral branch pipe above the floor slab. A drainage pipe joint provided with a branch pipe connecting portion, characterized in that it is provided with a vibration damping material integrally provided on at least a part of the outer peripheral surface of a portion of the pipe body that passes through the through hole. do.

Preferably, the damping material can be configured to be adhered or adhered to the entire surface of the outer peripheral surface on which the damping material is provided.
More preferably, the damping material can be formed in the form of a sheet and wound around the outer peripheral surface.
More preferably, it can be configured so that a vibration insulator is provided on the outer periphery of the vibration damping material.

More preferably, it can be configured so that a sound insulation cover is provided on the outer periphery of the vibration insulator.
More preferably, the vibration insulator can be configured to be fixed to the sound insulation cover on the outer layer side.
More preferably, the pipe body includes at least a straight pipe portion and a reduced diameter portion below the straight pipe portion, and the vibration insulator covers the sound insulation cover in a height range corresponding to the straight pipe portion. It can be configured to be fixed intermittently in the circumferential direction.

More preferably, the vibration insulator can be configured to be fixed by spotting at two to four locations in the circumferential direction of the sound insulation cover on the outer layer side.
More preferably, the drainage pipe joint is formed of one or more resin injection-molded products, and a sheet-shaped heat-expandable refractory material is provided on the outer peripheral surface in place of at least a part of the vibration damping material. It can be configured to include a portion.

More preferably, the drainage pipe joint is formed of one or more resin injection molded products, and the pipe body includes at least a straight pipe portion and a reduced diameter portion below the straight pipe portion, and the vibration. A heat-expandable fireproof material is provided on the inner layer side of the insulator in place of a part of the vibration damping material, and at a position above the heat-expandable fireproof material and at a height corresponding to the straight pipe portion. The vibration insulator can be configured to be fixed to the sound insulation cover on the outer layer side.

More preferably, the damping material is formed to contain a butyl-based or asphalt-based material, and the sound insulation cover is formed to include a rubber-based, elastomer-based or olefin-based material. Can be done.
More preferably, the sound insulation cover includes a non-stretchable cover body having a length corresponding to the overall length of the vibration insulator in the vertical direction, and is between the cover body and the outer surface of the drainage pipe joint. The elastic material may be provided only on the upper end portion of the above, or on the upper end portion and the lower end portion.

More preferably, the elastic material can be configured to be provided on the inner peripheral surface of the cover body or the outer surface of the drainage pipe joint.
More preferably, the cover body can be configured to be made of a hard resin.
More preferably, the sound insulation cover can be configured to come into contact with the outer surface of the drainage pipe joint via a ring-shaped elastic ring elastic material corresponding to the outer diameter of the drainage pipe joint. ..

More preferably, the vibration insulator is fixed on the outer layer side by continuously or intermittently fixing one outer circumference of the vibration insulator at at least one position in the height direction of the sound insulation cover on the outer layer side. It can be configured to be fixed to the sound insulation cover.

According to the present invention, it is possible to provide a drainage pipe joint provided through a floor slab of a building, which can exhibit optimum vibration damping performance, vibration insulation performance, and sound insulation performance.

It is (A) top view and (B) side view which shows the drainage pipe structure which adopted the drainage pipe joint 100 which concerns on 1st Embodiment of this invention. It is a figure which shows the drainage pipe structure of FIG. 1, (A) is the perspective view which shows the state after the outer layer member 700 is provided in the drainage pipe joint 100, It is a perspective view which shows the state before being provided. It is a figure which shows the drainage pipe joint 100 | It is a perspective view which shows the state before the 612 and the thermal expansion refractory sheet 712 are provided. (A) is an exploded view of the drainage pipe joint 100 shown in FIG. 3 (B), and is a perspective view of the pipe main body 110 (B) through which the pipe wall is seen through. It is 5-5 cross-sectional view of FIG. 1 which shows the drainage pipe structure which adopted the drainage pipe joint 100. FIG. 5 is a partially enlarged cross-sectional view of FIG. 5 (without a recessed cross section). FIG. 5 is a partially enlarged cross-sectional view of FIG. 5 (with a recessed cross section). (A) is a development view of rock wool which is an example of a vibration insulator 720 (formed by a fire-resistant inorganic fiber) forming an outer layer member 700 having a three-layer structure shown in FIG. It is a development view of rock wool which is an example of a certain vibration insulator 726. It is (A) top view and (B) side view which shows the drainage pipe structure which adopted the drainage pipe joint 200 which concerns on 2nd Embodiment of this invention. It is a figure which shows the drainage pipe structure of FIG. 9, (A) is the perspective view which shows the state after the outer layer member 800 is provided in the drainage pipe joint 200, (B) is the outer layer member 800 in the drainage pipe joint 200 It is a perspective view which shows the state before being provided. It is a figure which shows the drainage pipe joint 200 | It is a perspective view which shows the state before the 612 and the thermal expansion refractory sheet 712 are provided. (A) An exploded view of the drainage pipe joint 200 shown in FIG. 11 (B), (B) a cross-sectional view of the pipe body 210, and (C) a recess 212 filled with a heat-expandable fireproof material 612. It is sectional drawing of the pipe main body 210 for demonstrating. It is 13-13 sectional view of FIG. 1 which shows the drainage pipe structure which adopted the drainage pipe joint 200. FIG. 13 is a partially enlarged cross-sectional view of FIG. It is a figure for demonstrating the arrangement of the heat-expandable refractory material (A)-(E). It is sectional drawing which shows the drainage pipe structure which adopted the drainage pipe joint 101 which concerns on modification 1 of this invention. It is a figure for demonstrating the state which set the sound insulation cover in a pipe body in the drainage pipe joint 101 of FIG. It is sectional drawing which shows the drainage pipe structure which adopted the drainage pipe joint 101 which concerns on the 2nd modification of this invention. It is a figure for demonstrating the state which set the sound insulation cover in a pipe body in the drainage pipe joint 103 of FIG. It is a figure for demonstrating the construction method of setting the pipe main body in the sound insulation cover embedded in the slab in the drainage pipe joint 101 of FIG. It is a figure for demonstrating the construction method of setting the pipe main body in the sound insulation cover embedded in the slab in the drainage pipe joint 103 of FIG.

In the following, the drainage pipe joint 100 according to the first embodiment of the present invention will be referred to with reference to FIGS. 1 to 8, and the drainage pipe joint 200 according to the second embodiment of the present invention will be shown with reference to FIGS. 9 to 15. Will be explained in detail including the construction method with reference to. Here, the perspective views shown in FIGS. 2 to 4 and 10 to 12 are schematically shown, and the consistency with other figures (for example, FIGS. 5 and 13) is completely one. If not (for example, the presence or absence of a drainage pipe connected to the drainage pipe joint 100 or the drainage pipe joint 200, other than the receiving portion of the rising pipe connecting portion 120 and the receiving portion of the lateral branch pipe connecting portion 140) The presence or absence of the vibration damping material 714 and the shape of the swivel blade 114). Further, in the following description, the outer peripheral surface and the outer surface and the outer side, the outer layer side and the outer peripheral side and the outer side, and the inner layer side and the inner peripheral side and the inner side may not be clearly distinguished from each other.

<Overview>
As shown in FIGS. 1 and 5, and 9 and 13, the drainage pipe structure using the drainage pipe joint 100 or the drainage pipe joint 200 according to the embodiment of the present invention has a floor slab S in a building up and down. The drainage pipe joint 100 or the drainage pipe joint 200 provided in the through hole, and the upper floor side connected to the drainage pipe joint 100 or the drainage pipe joint 200 above the floor slab S to allow the drainage from the upper floor to flow in. The drainage vertical pipe 520, the drainage lateral branch pipe 510 (here, three) connected to the drainage pipe joint 100 or the drainage pipe joint 200 above the floor slab S, and these drainage below the floor slab S. It has a drainage stand pipe 530 or a 90 degree vent pipe 540 on the lower floor side which is connected to the pipe joint 100 or the drainage pipe joint 200 and allows drainage to flow out to the lower floor. The difference is that the drainage pipe structure using the drainage pipe joint 100 is adopted on a floor other than the lowest floor, and the drainage pipe structure using the drainage pipe joint 200 is adopted on the lowest floor. The drainage pipe structure has the same structure. It should be noted that these drainage pipe structures are examples, and the drainage pipe joint according to the present invention is not adopted only for the illustrated drainage pipe structure.

Here, the drainage pipe joint 100 or the drainage pipe joint 200 used in these drainage pipe structures and the drainage pipe connected to these drainage pipe joints are made of non-fireproof resin. However, the drainage pipe joint according to the present invention may be limited to such a non-fireproof resin product or may include a non-resin material such as cast iron without being limited to the resin product. Therefore, in the following, the drainage pipe joint 100, the drainage pipe joint 200, and the drainage pipe connected to these drainage pipe joints will be described as being made of non-fireproof resin, and the case is not limited to the resin. , Will be described as needed in the explanation. Here, "non-fire resistance" refers to a property that can be deformed, melted, or burned by heat when a fire breaks out in a building, and corresponds to, for example, a resin-made one. When resin is used, for example, vinyl chloride, polyethylene, polybutene, polypropylene, nylon, or the like is used for the drainage pipe joint 100, the drainage pipe joint 200, and the pipes connected to these (drainage horizontal branch pipe 510, upper floor side). The drainage stand pipe 520, the drainage stand pipe 530 on the lower floor side, and the 90 degree vent pipe 540) are molded. For the drainage stand pipe, for example, a so-called fireproof two-layer pipe may be used.

The drainage pipe joint 100 is shown in FIGS. 4 (A) and 5, and the drainage pipe joint 200 is one or more (seven here, although it is an example) as shown in FIGS. 12 (A) and 13. It is made of a resin injection molded product. Then, as shown in FIGS. 1, 4 (A) and 5, the drainage pipe joint 100 includes a pipe body 110 arranged in a through hole of the floor slab S and its floor when it is installed in a building. The upper pipe connection part 120 that connects the drain pipe 520 that protrudes above the slab S and allows the drainage from the upper floor to flow in, and the drain pipe that protrudes below the floor slab S and drains the drainage to the lower floor (here, drainage). A drainage pipe connecting portion 130 for connecting the vertical pipe 530) and a horizontal branch pipe connecting portion 140 for connecting the drainage lateral branch pipe 510 above the floor slab S are provided. Further, as shown in FIGS. 9, 12 (A) and 13, the drainage pipe joint 200 has a pipe body 210 arranged in a through hole of the floor slab S and a floor slab when it is installed on a building. A drainage pipe connecting portion 120 that connects a drainage stand pipe 520 that protrudes above S and allows drainage from the upper floor to flow in, and a drainage pipe that protrudes below the floor slab S and drains drainage to the lower floor (here, the mounting member T). A drainage pipe connection portion 230 for connecting a 90-degree vent pipe 540) suspended on the lower floor side of the floor slab S, and a horizontal branch pipe connection portion 140 for connecting the drainage lateral branch pipe 510 above the floor slab S. To be equipped. As described above, the drainage pipe joint 100 and the drainage pipe joint 200 are different between the pipe body 110 and the pipe body 210, and are different between the drainage pipe connection portion 130 and the drainage pipe connection portion 230, and the outer layer member 700 (described later). It differs from the outer layer member 800. That is, the drainage pipe joint 100 and the drainage pipe joint 200 are common above the floor slab S. These common parts are designated by the same reference numerals in the drainage pipe joint 100 and the drainage pipe joint 200.

As shown in these figures, as a common part, in the drainage pipe joint 100 and the drainage pipe joint 200, the horizontal branch pipe connection portion 140 is provided with openings at three locations at 90 ° intervals in a plan view. A first lateral branch pipe connecting member 144 for connecting the chamber 142 and the drainage lateral branch pipe corresponding to the position of the opening, a second lateral branch pipe connecting member 146, and a third lateral branch pipe. It is composed of a connecting member 148. Here, although not limited to, the first lateral branch pipe connecting member 144, the second lateral branch pipe connecting member 146, and the third lateral branch pipe connecting member 148 are all not reduced in diameter or the like. Although the drainage horizontal branch pipe 510 is connected, the pipe diameter may change.

The pipe body 110 included in the drainage pipe joint 100 and the pipe body 210 included in the drainage pipe joint 200 differ in the following points. The pipe main body 210 has a shorter length in the drainage direction with respect to the pipe main body 110, does not have the reduced diameter portion 118 (tapered shape) provided in the pipe main body 110, and has a lateral branch pipe connection portion in the pipe main body 110 provided in the pipe main body 110. The swivel vane 114 as a protruding portion protruding from the inner surface of the pipe body 110 between the 140 and the drain pipe connecting portion 130 is not provided. A recess 112 corresponding to this protrusion (here, the swirl vane 114) is formed on the outer surface of the pipe body 110, and a putty-like heat-expandable refractory material 612 is formed in the recess 112 as shown in FIG. It is filled. On the other hand, the pipe body 210 is provided with a recess 212 in place of the recess 112 provided in the tube body 110, and as shown in FIG. 11, the portion of the recess 212 is filled with a putty-like heat-expandable refractory material 612.

Here, the heat-expandable refractory material 612 filled in the portion of the recess 112 or the portion of the recess 212 will be described. The heat-expandable fire-resistant material 612 is, for example, a resin composition containing a resin component containing butyl rubber as a main component, a phosphorus compound, neutralized heat-expandable graphite, a hydrous inorganic substance, and a metal carbonate, or an epoxy resin. It is formed from a resin composition containing a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. For this heat-expandable refractory material 612, for example, the trade name "Fiblock" (expanded 5 to 40 times at a reaction temperature of 200 ° C.) manufactured by Sekisui Chemical Co., Ltd. is used. In addition, the product name "Thermal Expansion Heat Resistant Sealing Material IP" manufactured by Inaba Denki Sangyo Co., Ltd. (expansion starts at 120 ° C and the volume expands more than 4 times) and Furukawa Techno Material Co., Ltd. The trade name "Heat Mel" (expansion start temperature 120 ° C., remarkable expansion temperature 260 ° C., expands 4 to 8 times) and the like can be used as the heat-expandable fire-resistant material 612.

The heat-expandable refractory material 612 is not limited to the above, and a wide variety of materials having different reaction temperatures and expansion rates can be used. Therefore, the reaction temperature and pipe diameter required according to the construction site in the building. It is possible to select and use the most suitable one that satisfies various conditions such as.
The heat-expandable fireproof material 612 is formed in the form of a non-hardening, non-drying putty, and has a recess 112 on the outer surface of the pipe body 110 of the drainage pipe joint 100 or a recess 212 on the outer surface of the pipe body 210 of the drainage pipe joint 200. However, the pipe body 110 or the pipe body 210 is filled up to the outer diameter (the amount capable of sufficiently achieving the desired fire resistance together with the heat-expandable fire-resistant sheet 712 described later or without providing the heat-expandable fire-resistant sheet 712). It is filled.

Here, the protruding portion provided in the pipe body 110 is not limited to the swirl vane 114 as long as it is a portion that changes the flow of drainage in the drainage pipe joint 100, and may be a drift plate or the like. As long as the recess 112 corresponding to the outer surface of the pipe body 110 is formed, the method is not limited to the swirling blade or the drift plate. Further, the recess 212 included in the tube body 210 is not limited to the shape shown in the figure. In any of the drainage pipe joints 100 and the drainage pipe joint 200, the heat-expandable fireproof material 612 is filled in the recesses on the outer peripheral surface of these drainage pipe joints. As shown in FIG. 12B, the recess provided in the pipe body 210 is formed as the diameter of the pipe body 210 is reduced, but the inner wall of the pipe body 210 expands on the downstream side thereof. Therefore, in order to distinguish it from the reduced diameter portion 118 included in the pipe main body 110, the pipe main body 210 will not be described as having a reduced diameter portion (tapered portion).

Further, as shown in FIGS. 3 and 5, the sheet-shaped heat-expandable refractory sheet 712 is wound around the outer peripheral surface of the pipe body 110 corresponding to the height position corresponding to the floor slab S of the pipe body 110. As shown in FIGS. 11 and 13, the sheet-shaped heat-expandable refractory sheet 712 is wound around the outer peripheral surface of the pipe body 110 so as to correspond to the height position corresponding to the floor slab S of the pipe body 210. It is provided. The heat-expandable refractory material 612 and the heat-expandable refractory sheet 712 are separated in the vertical direction in the pipe body 110, whereas they are not separated in the vertical direction and overlap each other in the radial direction in the pipe body 210. It has a part that is. The alternate long and short dash line in FIGS. 3 and 11 means to be removed.

In a building adopting such a drainage pipe structure, when the drainage pipe joint 100 or the drainage pipe joint 200 or the like burns, the heat expandable fireproof material 612 and the heat expandable fireproof sheet 712 are radially oriented. It expands inward, and the main body of the drainage pipe joint 100 or the drainage pipe joint 200 crushes the hollow portion thereof to close the drainage pipe joint 100 or the drainage pipe joint 200. As a result, the drainage pipe structure using the drainage pipe joint 100 or the drainage pipe joint 200 can block the pipeline so that flames, smoke, etc. do not flow in the event of a fire.

Here, such a heat-expandable refractory (heat-expandable refractory material 612, heat-expandable refractory sheet 712) is provided only for resin as described above, and as will be described later, such heat If the heat-expandable refractory sheet 712 of the expandable refractory is not provided (for whatever reason), it is preferable to provide a vibration damping material 714 instead of the heat-expandable refractory sheet 712. ..
Refer to FIGS. 5 to 7 for the drainage pipe joint 100, and refer to FIGS. 13 to 14 for the drainage pipe joint 200. The outer layer member 700 and the outer layer member 800 provided so as to be wound around the outer layer member 800 will be described.

As shown in these figures, the outer layer member 700 and the outer layer member 800 have a three-layer structure, and the vibration damping material 714 (or the heat-expandable fireproof sheet 712) is provided from the outer surface of the drainage pipe joint 100 or the drainage pipe joint 200. ), The vibration insulator 720 or the vibration insulator 820 formed of the fire-resistant inorganic fiber, and the sound insulation cover 730 are provided in this order on the outer surface of the pipe body 110 or the outer surface of the pipe body 210 and the drainage pipe connection portion 230. The vibration insulator 720 and the vibration insulator 820 have different shapes when deployed, as will be described in detail later.
The portion of the recess 112 or the recess 212 is filled with a heat-expandable refractory material 612 to exhibit fire resistance (fire spread prevention function), and the hollow 112 or the recess 212 is a putty-like heat-expandable fire resistance. Since it is filled with the material 612, vibration damping performance and sound insulation performance are also exhibited.

Then, in the drainage pipe joint 100, the vibration damping material 714 covers the outer surface (for example, an adhesive or an adhesive, etc.) of the pipe body 110 so as to cover the heat-expandable refractory material 612 filled in the recess 112. It is pasted in). Then, regarding the fire resistance performance, at the position of the pipe body 110 above the portion of the recess 112 filled with the heat-expandable fire-resistant material 612, the heat-expandable fire-resistant sheet 712 replaces the vibration damping material 714 with the outer surface of the pipe body 110. It is pasted on. The heat-expandable refractory sheet 712 attached to the outer surface of the pipe body 110 in this way also exhibits damping performance (although the performance may not be the same) as with the damping material 714. Further, in the drainage pipe joint 200, the vibration damping material 714 is attached to the outer surface of the drainage pipe connection portion 230 (for example, with an adhesive or an adhesive). With regard to fire resistance, a heat-expandable fire-resistant sheet 712 is attached to the outer surface of the pipe body 210 instead of the vibration damping material 714 at the position of the pipe body 210 above the drain pipe connection portion 230 (furthermore. A heat-expandable refractory material 612 is filled in the recess 212 on the inner peripheral side in the radial direction). The heat-expandable refractory sheet 712 attached to the outer surface of the pipe body 210 in this way also exhibits damping performance (although the performance may not be the same) as with the damping material 714.

As will be described in detail later, the coefficient of thermal expansion differs between the heat-expandable refractory material 612 and the heat-expandable refractory sheet 712. Here, it is generally said that a thermally expandable refractory material has a low coefficient of shape retention after expansion when the coefficient of thermal expansion is high, and a high form retention after expansion when the coefficient of thermal expansion is low. If the coefficient of thermal expansion is low, sufficient fire resistance may not be exhibited, and if the shape retention is low, the thermal expansion material may fall. Considering the characteristics of this trade-off and the coefficient of thermal expansion (and the absolute value of the difference, etc.), the coefficient of thermal expansion corresponds to each position, weight, shape, reaction rate, expansion start temperature, etc. The heat-expandable material contained in the refractory material 612 and the heat-expandable fire-resistant sheet 712 is selected.

As described above, the innermost layer 710 in this three-layer structure is either the heat-expandable refractory sheet 712 or the damping material 714.
The vibration damping material 714 is formed of a butyl-based (butyl rubber, etc.) or asphalt-based (rubber asphalt, modified asphalt, etc.) material, and the sound insulation cover 730 is a rubber-based material (EPDM (ethylene propylene diene rubber, etc.), etc.). The vibration insulator 720 and the vibration insulator 820 formed by containing an elastomer-based or olefin-based (polyethylene resin, etc.) material and formed of fire-resistant inorganic fibers are aggregates (porous) of fire-resistant inorganic fibers. Material).

Here, examples of the inorganic fiber include artificial mineral fibers, such as glass wool, rock wool, and ceramic fibers, which are preferable in terms of high sound absorption performance in addition to high vibration insulation performance. Vibration caused by drainage flowing down the pipe body 110 or the pipe body 210 and the drain pipe connection portion 230 (for example, vibration generated by hitting the swirling blade 114) is suppressed by the vibration damping material 714, and is further formed of this rock wool or the like. The vibration insulator 720 blocks the vibration (and / or absorbs the noise caused by the vibration), and the sound insulating cover 730 made of a rubber cover made of EPDM or the like blocks the propagation of the noise caused by the vibration. .. Here, rock wool is a general term for those manufactured mainly from steel slag such as natural rock or blast furnace slag, and glass wool is a general term for cotton-like materials composed of glass fibers, both of which are refractory. And has flame-shielding properties.

In the following, a case where butyl rubber is used as the vibration damping material 714, rock wool is used as the vibration insulator 720, and a rubber cover made of EPDM is used as the sound insulation cover 730 may be described. The material is just one example.
When this rock wool is used as the vibration insulator 720, it is preferable to use sheet-shaped rock wool manufactured by papermaking. However, the rock wool sheet produced by fabrication in this way is not processed to form a three-dimensional shape (straight pipe portion + reduced diameter portion (tapered portion)) of the pipe body 110 in the drainage pipe joint 100 by sewing or the like. Difficult, flat-shaped rock wool sheet without sewing or the like (in the following, it may be simply referred to as rock wool, but even in that case, the shape of the vibration insulator 720 in the present invention is preferably sheet-like). For example, even if it is set on the pipe body 110 by a method such as sticking it with tape, it may fall in the event of a fire. Therefore, the developed shape (planar shape) of the rock wool sheet is shown in FIG. 8A, for example.

By doing so, even if the floor slab S is thin, the cut can be made to appear only at one place in the vertical direction (vertical direction in the pipe body 110). Further, in the developed view of the rock wool sheet shown in FIG. 8 (B), the cut is the same in that the cut appears only at one place in the vertical direction, but the three-dimensional shape of the pipe body 110 (straight pipe portion +). In order to correspond to the reduced diameter portion (tapered portion)), FIG. On the other hand, in FIG. 8B, the rectangle and the partial ring shape are joined by an arc. In the case of the developed view shown in FIG. 8 (A), the cut is at the position of the floor slab S, so even if there is a cut in this part (this part may be mechanically weak or inferior in fire resistance). Since the position is the position of the floor slab S and the floor slab S does not burn, there is no problem in the fire resistance of the rock wool and it does not fall in the event of a fire. On the other hand, in the developed view of the rock wool sheet shown in FIG. 8B, not only when the joint portion shown by the dotted line is not at the position of the floor slab S, but also when it is at the position of the floor slab S. There is a possibility that the rock wool sheet may fall from the position of this joint due to the short length of the joint and the heavy weight of the ring-shaped joint that is joined downward. .. The shape of the vibration insulator 720 and the details of the action and effect based on the shape will be described later. Regarding the vibration insulator 820, the pipe main body 210 and the drainage pipe connection portion 230 in which the vibration insulator 820 is provided in the drainage pipe joint 200 have a substantially straight pipe shape and have a three-dimensional shape (straight) like the pipe main body 110. Since the pipe portion + reduced diameter portion (tapered portion)) is not provided, the developed rock wool sheet shown in FIG. 8 (A) described above may not be adopted, but may be adopted. ..

Further, the vibration insulator 720 in which this rock wool is adopted is loose and covers the entire circumference in order to suppress noise propagation due to resonance with respect to the vibration damping material 714 on the inner layer side or the heat-expandable fireproof sheet 712. It is provided so that it is fixed at several points in the circumferential direction instead of being fixed. In particular, the rock wool is fixed (more specifically, the rock wool is fixed to the rubber cover made of EPDM as the sound insulation cover 730). It is above the heat-expandable fire-resistant material 612 and the heat-expandable fire-resistant sheet 712) to prevent the rock wool from falling in the event of a fire. Further, as an example of the mounting method for preventing the drop, joining with an adhesive, double-sided tape or the like can be mentioned.

In the following, it is a manufacturing method (not a construction method) of the drainage pipe joint 100 provided with the outer layer member 700 of the three-layer structure or the drainage pipe joint 200 provided with the outer layer member 800, and the outer layer member 700 or the outer layer member 800. The mounting procedure will be described.
First, the recess 112 or the recess 212 is filled with a putty-like heat-expandable refractory material 612. Then, the heat-expandable refractory sheet 712 is attached. In the drainage pipe joint 100, the heat-expandable refractory sheet 712 is separated from the putty-like heat-expandable refractory material 612, but in the drainage pipe joint 200, all of the putty-like heat-expandable refractory material 612 or A heat-expandable refractory sheet 712 is attached so as to cover a part of the sheet. Further, the damping material 714 is attached to the outer peripheral surface of the pipe body 110 or the drainage pipe connecting portion 230 with an adhesive or an adhesive. At this time, the innermost layer 710 in this three-layer structure includes either a heat-expandable refractory sheet 712 or a vibration damping material 714. Although it is not layered, in these drainage pipe joints 100 and 200, there is a heat-expandable refractory material 612 filled in the recess 112 or the recess 212 on the inner layer side of the heat-expandable fireproof sheet 712. do.

After providing the heat-expandable fireproof sheet 712 and the vibration damping material 714, the rock wool sheet as the vibration insulator 720 (expanded view is shown in FIG. 8A) or the vibration insulator 820 (deployment). Wrap a rock wool sheet (not shown but rectangular). Further, it is covered with a rubber cover made of EPDM as a sound insulation cover 730 from above. Here, the rubber cover made of EPDM as the sound insulation cover 730 exhibits water stopping property, sound insulation property, and vibration insulation property. The EPDM rubber cover as the sound insulation cover 730 may be integrally molded and adhered to the drainage pipe joint 100 or the drainage pipe joint 200 to exhibit water stopping property, or may not be adhered (rubber). It is also possible to develop the water stopping property only by the tension (which is expressed by the elasticity of the material). In this case, as shown in the cross-sectional shape shown in FIGS. 5 to 7 or 13 to 14, the upper end of the EPDM rubber cover as the sound insulation cover 730 has an annular and thick upper end. It is also preferable to provide an annular and thick lower end water stop portion 734 (although the diameter is different) at the water stop portion 732 and / or the lower end portion to enhance the water stoppage.

According to these drainage pipe joints 100 or drainage pipe joints 200 outlined above, they are made of one or more resin injection molded products, are provided through the floor slab S of a building, and are fire resistant. It can fully demonstrate its performance and suppress drainage vibration. In particular, in the outer layer member 700 or the outer layer member 800 having a three-layer structure, a vibration damping material 714 using butyl rubber as an example as the innermost layer 710 is applied to the outer surface of the pipe body 110 or the outer surface of the pipe body 210 and the drain pipe connection portion 230. The vibration insulator 720 or the vibration insulator 820 (the developed shape is different from the vibration insulator 720), which is provided in close contact with each other and suppresses the vibration extremely effectively, and the rock wool sheet is used as an example as an intermediate layer, is loosely and numbered. It is fixed at a place to express sound absorption, fire resistance, sound insulation and vibration insulation, and a sound insulation cover 730 using EPDM rubber cover as an example is provided as the outermost layer to stop water, sound insulation and vibration. Insulation is exhibited, and vibration due to drainage flowing down the pipe body 110 or the pipe body 210 and the drain pipe connection portion 230 (for example, generated by hitting the swirling blade 114) is suppressed by the vibration damping material 714, and then vibration insulation is performed. Since the body 720 or the vibration insulator 820 further blocks the vibration, and the sound insulation cover 730 blocks the generation of noise due to the vibration, the drainage vibration can be suppressed extremely effectively. Further, two heat-expandable refractory materials (heat-expandable fire-resistant material 612 and heat-expandable fire-resistant sheet 712) are provided, and the outside thereof is covered with a plurality of layers including a layer exhibiting fire resistance. Therefore, the fire resistance performance can be fully exhibited.

Next, the drainage pipe joint 100 or the drainage pipe joint 200 will be described in more detail below. It should be noted that the drainage pipe joint 100 is referred to with reference to FIGS. 1 to 8 and the drainage pipe joint 200 is referred to with reference to FIGS. 9 to 15, which is the same as the above-mentioned outline. Further, the configuration common to the drainage pipe joint 100 and the drainage pipe joint 200 may be described as represented by the drainage pipe joint 100.

<Damping material: Basically, drainage pipe joints are not limited to resin>
The damping material 714 of the innermost layer 710 that constitutes the outer layer member 700 of the drainage pipe joint 100 is integrally provided on at least a part of the outer peripheral surface of the portion of the pipe body 110 that passes through the through hole of the floor slab S. There is. It should be noted that the present invention is not limited to the one provided on the entire outer peripheral surface of the pipe main body 110, and even if the one is provided only on a part of the outer peripheral surface of the pipe main body 110 (the position depends on the floor slab S). If so) it doesn't matter. Further, the damping material 714 of the innermost layer 710 constituting the outer layer member 800 of the drainage pipe joint 200 is integrally provided on at least a part of the outer peripheral surface of the portion of the pipe body 210 passing through the through hole of the floor slab S. It is also provided in the drainage pipe connection portion 230. In addition, it is not limited to the one provided on the entire outer peripheral surface of the pipe main body 210, and even if it is provided only on a part of the outer peripheral surface of the pipe main body 210 (the position depends on the floor slab S). If so) it doesn't matter. Here, unlike FIGS. 10 to 14, the pipe body 210 is integrally provided with a vibration damping material 714 instead of the heat-expandable refractory sheet 712.

Then, it is preferable that the vibration damping material 714 is integrally provided on the outer peripheral surface on which the vibration damping material 714 is provided by being adhered or adhered to the entire surface. Further, it is preferable that the vibration damping material 714 is formed in a sheet shape and wound around the outer peripheral surface.
As described above, the vibration damping material 714 using butyl rubber as an example as the innermost layer 710 is provided at least a part of the outer peripheral surface (outer surface) of the pipe body 110 or the outer peripheral surface (outer surface) of the pipe body 210 and the drainage pipe connecting portion 230. By providing the drainage pipe joint in close contact with the drainage pipe joint, vibration generated in the drainage pipe joint can be suppressed extremely effectively.

Further, it is also preferable to use a two-layer structure outer layer member provided with a vibration insulator 720 or a vibration insulator 820, for example, rock wool on the outer periphery of the vibration damping material 714, and further, the vibration insulator 720 or the vibration insulation. It is also preferable to use an outer layer member having a three-layer structure in which a sound insulating cover 730 made of EPDM as an example is provided on the outer periphery of the body 820. When adopting this three-layer structure, it is preferable that the vibration insulator 720 or the vibration insulator 820 is provided so as to be fixed to the sound insulation cover 730 on the outer layer side instead of the vibration damping material 714 on the inner layer side.

More specifically, in the drainage pipe joint 100, the pipe body 110 includes at least a straight pipe portion 116 and a reduced diameter portion 118 below the straight pipe portion 116, and in this case, the vibration insulator 720. Is preferably provided so as to be intermittently fixed in the circumferential direction of the sound insulation cover 730 in the height range corresponding to the straight pipe portion 116. Further, in the drainage pipe joint 100 and the drainage pipe joint 200, the vibration insulator 720 or the vibration insulator 820 is provided so as to be fixed at two to four points in the circumferential direction of the sound insulation cover 730 on the outer layer side. Is preferable.

In this way, the vibrating insulator 720 or the vibrating insulator 820 (the developed shape is different from the vibrating insulator 720) using the rock wool sheet as an example as the intermediate layer is loosely and not the vibration damping material 714 on the inner layer side in several places. By fixing it to the sound insulation cover 730 on the outer layer side, sound absorption and fire resistance (when a heat-expandable fire resistance material is provided in place of / in addition to the vibration damping material 714), sound insulation and vibration insulation are exhibited. By providing a sound insulation cover 730, which is an example of a rubber cover made of EPDM, as the outermost layer to develop water resistance, sound insulation, and vibration insulation, vibration generated in the drainage pipe joint can be suppressed extremely effectively. Can be done.

As described above, when these drainage pipe joints 100 and drainage pipe joints 200 are formed of one or more (seven in this case) resin injection-molded products (non-fire resistant) (drainage pipes). (When the joint is limited to resin), instead of at least a part of the vibration damping material 714, a sheet-shaped heat-expandable fireproof sheet 712 is placed in the through hole of at least the floor slab S in the pipe body 110 or the pipe body 210. It is also preferable to provide a portion provided (pasted) on the outer peripheral surface of the portion passing through. In this case, in the drainage pipe joint 100, a sheet-shaped heat-expandable refractory sheet 712 is provided in the pipe body 110 in place of a part of the vibration damping material 714 provided in the pipe body 110. In the drainage pipe joint 200, a sheet-shaped heat-expandable refractory sheet 712 is provided (attached) to the pipe body 210 in place of all of the vibration damping materials 714 provided in the pipe body 210.

In this way, when the drainage pipe joint 100 or the drainage pipe joint 200 or the like burns, the heat-expandable fireproof sheet 712 expands inward in the radial direction due to the heat, and the drainage pipe joint 100 or the drainage pipe joint 200 is hollow. By crushing the portion to close the drainage pipe joint 100 or the drainage pipe joint 200, the drainage pipe structure using these drainage pipe joints 100 or the drainage pipe joint 200 is a pipe so that flames, smoke, etc. do not flow in the event of a fire. The road can be blocked.

Further, in the drainage pipe joint 100, the pipe body 110 includes at least a straight pipe portion 116 and a reduced diameter portion 118 below the straight pipe portion 116, and in this case, the inner layer of the vibration insulator 720. A heat-expandable fireproof sheet 712 is provided on the side in place of a part of the vibration damping material 714, and vibration insulation is provided at a position above the heat-expandable fireproof sheet 712 and at a height corresponding to the straight pipe portion 116. It is also preferable that the body 720 is fixed to the sound insulation cover 730 on the outer layer side.

In this way, even if the drainage pipe joint 100 or the like burns, the position is higher than the height position of the drainage pipe joint 100 blocked by the heat-expandable fireproof sheet 712, and the straight pipe portion 116 Since the vibration insulator 720 is fixed to the sound insulation cover 730 on the outer layer side at the corresponding height position, it is possible to prevent the vibration insulator 720 from falling in the event of a fire.

<Sound insulation cover: Basically, drainage pipe joints are not limited to resin>
The outermost layer sound insulation cover 730 constituting the outer layer member 700 of the drainage pipe joint 100 is above and below the vibration insulator 720 provided at least on the outer periphery of the portion of the pipe body 110 that passes through the through hole of the floor slab S. It is provided on the outer periphery of the vibration insulator 720 over the entire length in the direction. The outermost sound insulation cover 730 constituting the outer layer member 800 of the drainage pipe joint 200 is above and below the vibration insulator 820 provided at least on the outer periphery of the portion of the pipe body 210 that passes through the through hole of the floor slab S. It is provided on the outer periphery of the vibration insulator 820 over the entire length in the direction.

High sound insulation performance can be exhibited by providing a sound insulation cover 730, for example, a rubber cover made of EPDM, on the outer periphery of the vibration insulator 720 or the vibration insulator 820 over the entire length in the vertical direction.
Taking an EPDM rubber cover as an example, the sound insulation cover 730 has a water blocking effect, a sound insulation effect, and a vibration insulation effect. Therefore, in addition to the above-mentioned sound insulation performance, high water stopping performance and high vibration insulation performance can be exhibited.

Further, the sound insulation cover 730 preferably includes an upper end water stop portion 732 and / or a lower end water stop portion 734 at the upper end portion, and an upper end water stop portion 732 and / or a lower end water stop portion 734. The 734 is provided so as to come into contact with the outer surface of the drainage pipe joint 100 or the drainage pipe joint 200 (including the case where the drainage pipe joint 100 is brought into contact with the outer surface of the drainage pipe joint 100 or the drainage pipe joint 200). The upper end water stop portion 732 and the lower end water stop portion 734 are formed by a thick portion thicker than the main body of the sound insulation cover 730. Therefore, high water stopping performance can be exhibited and the strength is also excellent.

Further, the sound insulation cover 730 is integrated with a cover body having a length corresponding to the total length of the vibration insulator 720 or the vibration insulator 820 in the vertical direction including the upper end water stop portion 732 and / or the lower end water stop portion 734. It is preferably molded and the sound insulation cover 730 itself has elasticity.
When the sound insulation cover 730 itself has elasticity in this way, the elasticity of the sound insulation cover 730 itself can be used to provide the vibration insulator 720 or the vibration insulator 820 on the outer circumference thereof over the entire length in the vertical direction. can.

<Vibration insulator: Basically, the drainage pipe joint is not limited to resin, but a reduced diameter part is required>
In the drainage pipe joint 100, the pipe body 110 includes at least a straight pipe portion 116 and a reduced diameter portion 118 below the straight pipe portion 116, and in this case, the outer layer member 700 of the drainage pipe joint 100. The vibration insulator 720 of the intermediate layer constituting the pipe body 110 is provided at least on the outer periphery of the portion of the pipe body 110 that passes through the through hole of the floor slab S. The vibration insulator 720 is a sheet having a predetermined shape shown in FIG. 8 (A) in the deployed state (here, the shape of the vibration insulator 726 shown in FIG. 8 (B) may be used. (No), the edges of this sheet are brought into contact with each other and wound around the outer peripheral surface of the straight pipe portion 116 and the outer peripheral surface of the reduced diameter portion 118. Further, after the drainage pipe joint 100 is installed in the building, in a state where there is no attachment on the outer periphery of the vibration insulator 720, the vibration insulator 720 is as shown in FIGS. 5 to 8. , The edge 720S1 or the edge 726S1 shown in FIG. 8 (A) or FIG. The lower floor side of the floor slab S with the contacted portion at one location (the one-point chain line portion where the edge 720S2 or the edge 726S2 shown in FIG. 8 (A) or FIG. 8 (B) are in contact with each other). It is provided so as to be exposed to.

Therefore, even when the floor slab S is thin, the cut of the vibrating insulator 720 or the vibrating insulator 726 is one place in the vertical direction (vertical direction in the pipe body 110) (the cut where the end edges 720S2 or the end edges 726S2 are brought into contact with each other). ), So that the floor slab S does not burn, and the break of the vibration insulator 720, which has a weak strength from the floor slab S, is in the vertical direction (vertical direction in the pipe body 110) 1 Since it appears only in the location, there is no problem in the fire resistance of the vibration insulator 720, and it is possible to prevent the vibration insulator from falling in the event of a fire.

Further, more specifically, as shown in FIG. 8A, the predetermined shape of the vibration insulator 720 is a partial ring shape, and the floor is formed from the outer circumference of the ring shape to the inner circumference of the ring. A plurality of (here, five) fine grooves 722 having a length L (2) corresponding to a length L (1) of the vibration insulator 720 covered with the slab S and having a predetermined width are provided. The outer peripheral side of the ring is above the pipe body 110. A straight pipe so as to close each of the plurality of fine grooves 722 (so that the groove sides 722S forming the respective fine grooves 722 are brought into contact with each other and the edge edges 720S1 of the sheet are brought into contact with each other). It is wound around the outer peripheral surface of the portion 116, and the edge edges 720S2 of the sheet are brought into contact with each other and wound around the outer peripheral surface of the reduced diameter portion 118.

By wrapping the vibration insulator 720 around the outer peripheral surface of the pipe body 110 as a sheet having such a developed shape, the pipe body 110 becomes the straight pipe portion 116 and the reduced diameter portion 118 below the straight pipe portion 116. Even if the vibration insulator 720 is provided with at least the above, there is no problem in the fire resistance of the vibration insulator 720 and the vibration insulator does not fall in the event of a fire.
In particular, when a rock wool sheet made by fabrication is adopted as the vibration insulator 720, the rock wool sheet manufactured by fabrication has a three-dimensional shape (straight pipe) of the pipe body 110 in the drainage pipe joint 100 by sewing or the like. Even if it is difficult to form the portion + reduced diameter portion (tapered portion), the vibration insulator 720 can be provided on the pipe body 110 without sewing or the like, and the vibration insulator 720 will fall in the event of a fire. Can be prevented.

<Thermal expandable refractory material: Drainage pipe joints are basically limited to resin>
In the drainage pipe joint 100 or the drainage pipe joint 200, two types of heat-expandable fire-resistant materials having different coefficients of thermal expansion are provided, that is, a heat-expandable fire-resistant material 612 and a heat-expandable fire-resistant sheet 712. , FIG. 15 will be described in detail with reference to FIG.
First, in these drainage pipe joints 100 or drainage pipe joints 200, when two types of thermally expandable refractory materials are provided at different positions in the radial direction, they are provided on the inner layer side as shown in FIG. 15 (A). It is preferable that the heat-expandable refractory material to be used has a higher coefficient of thermal expansion than the heat-expandable refractory material provided on the outer layer side.

Next, in these drainage pipe joints 100 or drainage pipe joints 200, when two types of thermally expandable refractory materials are provided at different positions in the vertical direction, they are provided on the upper side as shown in FIG. 15 (B). It is preferable that the heat-expandable refractory material to be used has a higher coefficient of thermal expansion than the heat-expandable refractory material provided on the lower side. As will be described later, there is a case where the relationship of the coefficient of thermal expansion in the vertical direction is not established (for example, the drainage pipe joint 100).

Here, as described above, it is generally said that a thermally expandable refractory material has a low coefficient of shape retention after expansion when the coefficient of thermal expansion is high, and a high form retention after expansion when the coefficient of thermal expansion is low. Therefore, as shown in FIGS. 15 (A) and 15 (B), if the coefficient of thermal expansion is low, sufficient fire resistance may not be exhibited, and if the shape retention is low, the thermal expansion material may fall. A relationship is established with the characteristic of a trade-off that there is a possibility that it will end up. In consideration of such characteristics (using the characteristics), two types of heat-expandable refractory materials are selected according to their respective positions, weights, shapes, reaction rates, expansion start temperatures, and the like. ..

As a characteristic of the shape of the heat-expandable refractory material, the putty-like heat-expandable refractory material used in the present embodiment generally has a putty-like heat-expandable refractory material as shown in FIG. Has a higher coefficient of thermal expansion than the sheet-shaped heat-expandable refractory material.
With reference to FIG. 15 (D), the arrangement of the heat-expandable refractory material may be adopted for the drainage pipe joint (installed in the through hole of the floor slab S, regardless of the presence or absence of the reduced diameter portion) 4 Two examples will be described.

First, the second example shown in FIG. 15 (D) corresponds to FIG. 15 (A), and corresponds to the drainage pipe joint 200 according to the second embodiment. When the positions in the height direction are the same (the same here means that there is no difference in the height direction enough to consider the arrangement of the heat-expandable refractory material), but the positions in the radial direction are different. The coefficient of thermal expansion of the heat-expandable refractory material on the inner layer side in the radial direction is higher than the coefficient of thermal expansion of the heat-expandable refractory material on the outer layer side. More specifically, in the drainage pipe joint 200, a putty-like thermal expansion refractory material 612 filled in the recess 212 is adopted as the thermal expansion refractory material on the inner layer side, and the thermal expansion refractory material on the outer layer side. As a result, a heat-expandable refractory sheet 712 provided so as to be in contact with the outer layer of the putty-like heat-expandable refractory material 612 filled in the recess 212 is adopted. Since the putty-shaped material has a higher coefficient of thermal expansion than the sheet-shaped material, the heat-expandable refractory material 612 on the inner layer side has a higher coefficient of thermal expansion than the heat-expandable refractory sheet 712 on the outer layer side.

Next, the third example shown in FIG. 15 (D) corresponds to FIG. 15 (B) and has the same radial position (the same here is the same as the heat-expandable refractory material). It means that there is no difference in the radial direction enough to consider the arrangement of), and if the position in the height direction is different, the coefficient of thermal expansion of the heat-expandable refractory material on the upper side in the height direction is the heat on the lower side. It is higher than the coefficient of thermal expansion of the expandable refractory material.
Further, in the fourth example shown in FIG. 15 (D), when both the radial position and the height direction are different, the coefficient of thermal expansion is on the upper side in the height direction and on the inner layer side in the radial direction. A high thermal expansion fireproof material is arranged, and a thermal expansion fireproof material having a low coefficient of thermal expansion is arranged on the lower side in the height direction and the outer layer side in the radial direction.

Finally, the drainage pipe joint 100 according to the first embodiment, which is the first example shown in FIG. 15 (D), corresponds to the first example. In this case, since two types of heat-expandable fireproof materials are provided at different positions in the vertical direction, normally, as shown in FIG. 15 (B) (and the third example of FIG. 15 (D)). A heat-expandable fire-resistant material with a high coefficient of thermal expansion is placed above the height position (as in the eyes and the fourth example), and a heat-expandable fire-resistant material with a low coefficient of thermal expansion is placed below the height position. However, in the drainage pipe joint 100, a putty-like thermal expansion fireproof material 612 filled in the recess 112 is adopted as the lower thermal expansion fireproof material, and as the upper thermal expansion fireproof material. , A sheet-shaped heat-expandable fireproof sheet 712 is adopted. Since the putty shape has a higher coefficient of thermal expansion than the sheet shape, the lower thermal expansion refractory material 612 has a higher coefficient of thermal expansion than the upper thermal expansion refractory sheet 712. Not along.

This is because, in the drainage pipe joint 100, the pipe body 110 is provided with a reduced diameter portion 118 below the straight pipe portion 116, and the putty-like thermal expansion coefficient 612 is adopted for the reduced diameter portion 118. Then, the reduced diameter portion 118 having a small pipe diameter is quickly closed with a putty-like thermal expansion fireproof material 612 having a high coefficient of thermal expansion. On the other hand, since the morphological stability is low (because it is easy to fall), the outer layer side of the heat-expandable refractory material 612 is coated with a vibration insulator 720 typified by rock wool which also has fire resistance and flame insulation. At the same time, by holding the diameter-reduced portion 118 whose pipe diameter is gradually decreasing, the putty-like heat-expandable refractory material 612 is prevented from falling, and the low morphological stability is compensated. ing.

As described above, there may be exceptions in the height direction in the arrangement of the heat-expandable refractory material based on the coefficient of thermal expansion. The heat-expandable refractory material in FIG. 15 (D) is represented by a rectangle showing a sheet shape, but the heat-expandable refractory material in FIG. 15 (D) is a putty shape even if it is a sheet shape. It may be any of a sheet-like and sheet-like combination, a putty-like and putty-like combination, and a sheet-like and putty-like combination, and two types of thermal expansion with different coefficients of thermal expansion. If a refractory material is used, it is also within the scope of the present invention that a third type of heat-expandable refractory material is used not only at two places but also at a third place.

Further, in addition to the above-mentioned example of arranging the heat-expandable refractory material, when the straight pipe portion 116 and the reduced diameter portion 118 below the straight pipe portion 116 are provided at least as in the pipe main body 110, the straight pipe portion 116 is directly provided. Another example is that two types of heat-expandable refractory materials are provided at different positions in the radial direction in the height range of the pipe portion 116.
Further, as another example, two types of heat-expandable refractory materials having different coefficients of thermal expansion are provided in the straight pipe portion 116 and the diameter-reduced portion 118, respectively. For example, the drainage pipe joint 100 is such an example.

Another example is that the two types of heat-expandable refractories having different coefficients of thermal expansion are provided so as to have portions that overlap each other. For example, the drainage pipe joint 200 is such an example.
Another example is that at least one of the two types of heat-expandable refractory materials having different coefficients of thermal expansion is provided at a position corresponding to the floor slab S. For example, the drainage pipe joint 100 and the drainage pipe joint 200 are such examples, and the heat-expandable fireproof sheet 712 is obstructed by the floor slab S and cannot expand to the outer layer side, but expands to the inner layer side in the radial direction. Instead, the hollow portion of the drainage pipe joint 100 or the drainage pipe joint 200 can be quickly crushed and closed.

As described above, the heat-expandable fireproof materials having different thermal expansion rates are in the form of a sheet and are provided in an annular shape around the straight pipe portion 116 included in the drainage pipe joint 100, or in the form of a putty. Therefore, it is preferable that the drainage pipe joint 100 is provided with either a recess 112 or a filling form provided by filling the recess 212 of the drainage pipe joint 200. As described above, the vibration damping property can be exhibited by the sheet-shaped heat-expandable refractory material provided in the annular form and the putty-shaped heat-expandable refractory material provided in the filled form.

<Construction method of drainage pipe joints: Basically, drainage pipe joints are limited to resin>
The construction method of arranging the drainage pipe joint in the through hole of the floor slab S of the building and constructing it will be described below.
The drainage pipe joint preferably adopted in this construction method has the following structural features in the drainage pipe joint 100 and the drainage pipe joint 200. In the following, the drainage pipe joint 100 will be described as a representative.

The drainage pipe joint 100 is formed entirely of one or more resin injection-molded products, and when it is installed in a building, the pipe body 110 is arranged in the through hole of the floor slab S, and the pipe body 110 thereof. An upper pipe connection 120 that connects a drain pipe 520 that protrudes above the floor slab S and allows drainage from the upper floor to flow in, and a drain pipe that protrudes below the floor slab S and drains drainage to the lower floor (here). A drainage pipe joint including a drainage pipe connecting portion 130 for connecting the drainage vertical pipe 530) and a horizontal branch pipe connecting portion 140 for connecting the drainage lateral branch pipe 510 above the floor slab S, further structurally. As a feature of the above, the upper pipe connecting portion 120 or the lateral branch pipe connecting portion 140 is formed of a transparent resin, and a vibration damping material 714 is integrally provided with the pipe main body 110 on at least a part of the outer peripheral surface of the pipe main body 110. The receiving portion of the upper pipe connecting portion 120 or the receiving portion of the lateral branch pipe connecting portion 140 is not provided with a shield that makes the transparent resin invisible. As described above, before the construction of the drainage pipe joint 100, the vibration damping material 714 is integrated with the pipe body 110 on at least a part of the outer peripheral surface of the portion of the pipe body 110 that passes through the through hole of the floor slab S. The upper pipe connecting portion 120 or the lateral branch pipe connecting portion 140 is formed of a transparent resin, and the receiving portion of the upper pipe connecting portion 120 or the receiving portion of the lateral branch pipe connecting portion 140 is made of the transparent resin. Does not have a shield that makes it invisible.

As shown in FIG. 5, in the drainage pipe joint 100, the upper pipe connection portion 120 or the lateral branch pipe connection portion 140 is formed of a transparent (colorless transparent and colored transparent) resin, and the upper pipe connection is made before construction. The receiving portion of the portion 120 or the receiving portion of the lateral branch pipe connecting portion 140 is not provided with a shield that makes the transparent resin invisible. Here, before the construction, the damping material 714 is provided other than the receiving portion of the rising pipe connecting portion 120 or the receiving portion of the lateral branch pipe connecting portion 140, but these damping materials are provided. It is also possible that the 714 is not provided at all and is provided after the construction.

The construction method of arranging the drainage pipe joint 100 further having such structural features in the through hole of the floor slab S of the building is to fit the upper pipe connection portion 120 and the drainage pipe 520. The combined state is visually recognized (while recognizing) through the transparent resin of the upper pipe connection part 120, and the drainage vertical pipe 520 is connected to the upper pipe connection part 120, or the horizontal branch pipe connection part 140 and the drainage side The fitted state with the branch pipe 510 is visually recognized (while recognizing) through the transparent resin of the lateral branch pipe connecting portion 140, and the drainage lateral branch pipe 510 is connected to the lateral branch pipe connecting portion 140.

Then, visually confirming (recognizing) the receiving portion of the transparent resin in this way, the drainage vertical pipe 520 is connected to the upper vertical pipe connection portion 120, and the drainage horizontal branch pipe 510 is connected to the horizontal branch pipe connection portion 140. Further, after the arrangement of the drainage pipe joint 100 in the through hole of the floor slab S is completed, the gap between the through hole of the floor slab S and the drainage pipe joint 100 is filled with the mortar M.
Further, after filling the mortar M, a sound insulating member is provided on the outer circumference of the rising pipe connecting portion 120 or the outer circumference of the lateral branch pipe connecting portion 140. This sound insulation member is different from the sound insulation cover 730 described above (including the case where it is the same), and has vibration damping property and / or vibration insulation property in addition to the sound insulation property as the name implies. It is described as a general name. As an example of such a sound insulating member, the above-mentioned vibration damping material 714 is provided in the receiving portion, or in place of / in addition to the above-mentioned vibration damping material 714, the vibration insulator 720 and / or EPDM typified by the above-mentioned rock wool. A sound insulation cover 730 made of a rubber cover made of wood or the like is provided, or instead of this damping material 714 / in addition, a vibration insulator of glass wool different from rock wool and / or a cover made of vinyl chloride or the like is formed. A sound insulation cover is provided. Further, in this case, the receiving portion of the rising pipe connecting portion 120 or the lateral branch pipe connecting portion 140 (including the receiving portion when the damping material 714 is not provided other than the receiving portion before construction). It is also preferable to provide the damping material 714 on the inner layer side of the sound insulating member.

In this case, the sound insulating member is installed so as to cover the drainage pipe joint 100 from the outer peripheral side, or glass wool as a sound absorbing material and a vinyl chloride sound insulating sheet as a sound insulating cover are attached to the sound insulating member. The sound absorbing material made of glass wool is fixed (including the case where it is fixed by sewing, adhesive, etc.) to the vinyl chloride sound insulating cover on the outer layer side (instead of the vibration damping material 714 on the inner layer side). It will be constructed.

As described above, before the construction of the drainage pipe joint 100, the receiving portion of the upper pipe connecting portion 120 or the lateral branch pipe connecting portion 140 formed of the transparent resin is not provided with a shield that makes the transparent resin invisible. Therefore, the fitting state of the upper pipe connecting portion 120 and the drainage standing pipe 520 or the fitting state of the lateral branch pipe connecting portion 140 and the drainage horizontal branch pipe 510 is visually recognized through the transparent resin. Since the drain pipe can be connected, construction mistakes can be suppressed. Further, since the sound insulating member containing rock wool, glass wool or the like as a sound absorbing material is attached to the drainage pipe joint 100 after the mortar M is backfilled, the outer diameter of the drainage pipe joint 100 does not increase when the mortar M is backfilled, and the mortar does not become large. It is easy to backfill M, and it is possible to eliminate the possibility that the water content of the mortar M is scattered on rock wool, glass wool and the like and wets them.

As described above, the connection portion of the drainage pipe of the drainage pipe joint 100 is formed of transparent resin, and the transparent resin of the receiving portion at those connecting portions can be visually observed before construction (the transparent resin of the receiving portion is). In order to start the construction of the drainage pipe joint 100 without a shield that cannot be seen visually), the drainage pipe joint 100 can be connected while visually checking the connection state with other drainage pipes. Since mistakes can be suppressed and a sound insulating member containing rock wool, glass wool, etc. as a sound absorbing material is provided after backfilling the mortar, it is easy to backfill the mortar M, and the water content of the mortar M makes rock wool, glass wool, etc. The possibility of getting wet can be eliminated. Then, after the construction of the drainage pipe joint 100, as described above, drainage vibration can be suppressed extremely effectively, fire resistance can be sufficiently exhibited, and high water stopping performance can be exhibited. Or

<Modification example>
In the above-described embodiment, the sound insulation cover 730 is formed by including a rubber-based (EPDM (ethylene propylene diene rubber) or the like), elastomer-based or olefin-based (polyethylene resin or the like) material, and is elastic ( Although it was common in that it had elasticity), in the deformation examples described below (deformation example 1 and deformation example 2 described later), the sound insulation cover was made of hard resin and was made of an elastic material. The difference is that it is equipped with (rubber packing).

The sound insulation cover 730 forming the outermost layer of the outer layer member of the three-layer structure in the drainage pipe joint according to the above-described embodiment is formed of a rubber-based, elastomer-based or olefin-based material and has elasticity (elasticity). It exhibits water-stopping, sound-insulating and vibration-insulating properties. When the sound insulation cover 730 is set in the drainage pipe joint (more accurately, the sound insulation is provided on the main body side of the drainage pipe joint in which two layers of the vibration damping material 714 and the vibration insulator 720 provided in the pipe body are set. (When setting the cover 730) The main body side and the sound insulation cover are joined with an adhesive to stop water. The workability of the work of setting the sound insulation cover 730 may not be preferable.

Although it is not a major problem of the drainage pipe joint according to the above-described embodiment, when setting the sound insulation cover 730, for example, an adhesive is applied and the sound insulation cover is stretched by using the elasticity of the sound insulation cover. (Increase the inner diameter), set the drainage pipe joint provided with other than the sound insulation cover 730 so that the sound insulation cover 730 is covered, wipe off the adhesive that has squeezed out, and the adhesive solidifies and the sound insulation cover becomes the main body. The procedure is to confirm that the joint has been made to the side. Therefore, if the procedure is complicated, or if it takes time to solidify the adhesive, this setting operation may take time.

On the other hand, the sound insulation cover of the drainage pipe joint according to this modification has a fixed shape because it does not have elasticity (elasticity), and the sound insulation cover is attached to the drainage pipe joint provided other than the sound insulation cover (stretchability). Since it is not provided with (elasticity), it cannot be stretched and should not be stretched), and an elastic material (rubber packing) should be provided between the inner peripheral surface of the sound insulation cover and the outer surface of the drainage pipe joint. Is set. The sound insulation cover is joined to the drainage pipe joint (without using an adhesive or the like) via this elastic material (rubber packing), and thus the elastic material (rubber packing) is combined with the non-stretchable sound insulation cover body. Water-stopping, sound-insulating and vibration-insulating properties are exhibited by the sound-insulating cover.

In the following, two deformation examples (deformation example 1 in which the elastic material (rubber packing) is provided on the sound insulation cover side, deformation example 2 in which the elastic material (rubber packing) is provided on the drainage pipe joint (main body) side) The outline of is explained. When explaining the matters common to the sound insulation cover 731 of the drainage pipe joint 101 according to the first modification and the sound insulation cover 741 of the drainage pipe joint 103 according to the second modification, the same sound insulation cover as in the above-described embodiment will be explained. It may be described as represented by 730.

The sound insulation cover (more specifically, the sound insulation cover 731 or the sound insulation cover 741) of the drainage pipe joint (more specifically, the drainage pipe joint 101 or the drainage pipe joint 103) according to this modification corresponds to the total length of the vibration insulator 720 in the vertical direction. Includes a non-stretchable cover body (more specifically, sound insulation cover body 733 or sound insulation cover body 743) with a length that is only on the upper end between the cover body and the outer surface of the drainage pipe joint. Or, on the upper and lower ends (here not only on the upper end, but also on the upper and lower ends), elastic material (rubber packing) (more specifically, elastic material). (Rubber packing) 735 or elastic material (rubber packing) 745) is provided. Here, the elastic material (rubber packing) provided at the upper end functions as the upper end water stop portion, and the elastic material (rubber packing) provided at the lower end function as the lower end water stop portion. The sound insulation cover comes into contact with the outer surface of the drainage pipe joint via the elastic material (rubber packing) to make the sound insulation cover water-stop, and the elastic material (rubber packing) does not have elasticity. In addition to water-stopping, sound insulation and vibration insulation are exhibited in the sound insulation cover.

Here, the elastic material (rubber packing) is provided on the inner peripheral surface of the sound insulation cover main body (sound insulation cover main body 733) or the outer surface of the drainage pipe joint (the lower part 905 of the water collecting chamber of the horizontal branch pipe connection portion 140). ..
Further, the cover body (sound insulation cover body 733 or sound insulation cover body 743) is preferably made of hard resin.

Further, as shown in the first modification (as shown in FIGS. 16 and 17), the sound insulation cover (sound insulation cover 731) has an outer diameter of the drainage pipe joint (more specifically, a water collecting chamber of the lateral branch pipe connection portion 140). It is preferable to abut the outer surface of the drainage pipe joint via a ring-shaped elastic ring elastic material (rubber ring) 900 corresponding to the outer diameter of the lower portion 905. It should be noted that such an embodiment can also be applied to the second modification (only shown in the first modification and not shown in the second modification).

Further, in the above-described embodiment, it is preferable that the vibration insulator 720 is provided so as to be intermittently fixed in the circumferential direction of the sound insulation cover 730 in the height range corresponding to the straight pipe portion 116. It has been explained that the vibration insulator 720 is preferably provided so as to be fixed by spotting at 2 to 4 points in the circumferential direction of the sound insulation cover 730 on the outer layer side, but instead of this, it is fixed as follows. It is also preferable. The vibration insulator 720 is fixed to the sound insulation cover on the outer layer side by continuously or intermittently fixing one outer circumference of the vibration insulator 720 at at least one position in the height direction of the sound insulation cover 730 on the outer layer side. It is preferable that it is.

In the following, the materials such as the sound insulation cover and the elastic material and the construction method of the drainage pipe joint will be described in more detail (some are divided into the first modification and the second modification).
Here, the elastic material (rubber packing) may be provided on the sound insulation cover side (deformation example 1 described later) or on the drainage pipe joint (main body) side (deformation example 2 described later). Regardless of these differences, the elastic material (rubber packing) constitutes a part of the sound insulation cover. The details will be described later, but the sound insulation cover 731 in the drainage pipe joint 101 according to the first modification is composed of the sound insulation cover main body 733 and the elastic material (rubber packing) 735, and the elastic material (rubber packing) 735 is sound insulating. The sound insulation cover 741 in the drainage pipe joint 103 according to the second modification, which is provided on the inner peripheral surface of the cover body 733, is composed of the sound insulation cover body 743 and the elastic material (rubber packing) 745, and the elastic material (rubber packing). 745 is provided on the outer peripheral surface of the drainage pipe joint 103. Further, this elastic material (rubber packing) is applied only to the upper end portion between the cover body and the outer surface of the drainage pipe joint, or the upper end portion and the lower end portion in both modifications. As described above, the water-stopping property is exhibited. Then, in this modification, the sound insulation cover is configured in this way (that is, the sound insulation cover is configured to include the elastic material (rubber packing)), so that the sound insulation cover 730 according to the above-described embodiment is used. Similarly, in this modification as well, the sound insulation cover 731 or the sound insulation cover 741 exhibits water-stopping property, sound insulation property, and vibration insulation property.

Here, in the drainage pipe joint according to the modification (deformation example 1 and modification 2) described in detail below, the sound insulation cover of the drainage pipe joint according to the above-described embodiment has elasticity (stretchability). The difference is that it was made of a rubber-based material, but it was changed to one made of a hard resin material. Although the difference is that the ring elastic material (rubber ring) 900 is provided as described above, the ring elastic material (rubber ring) 900 can also be adopted in the above-described embodiment. Other structures that are the same as those in the above-described embodiment are designated by the same reference numerals as those in the above-described embodiment. The explanations thereof will not be repeated here because they overlap with the above explanations.

Here, as a hard resin adopted as a cover main body (sound insulation cover main body) of the sound insulation cover in the drainage pipe joint according to the modified example, vinyl chloride and polyethylene can be typically mentioned. Further, as such a hard resin, it is also preferable to form it with a resin material such as an olefin-based material (a resin composition containing 300 to 600 parts by weight of an inorganic filler with respect to 100 parts by weight of the olefin-based resin).

The inorganic filler is not particularly limited, but for example, silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, etc. Aluminum hydroxide, basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawn night, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate, talc, clay, mica, montmorillonite, bentonite , Activated white clay, sepiolite, imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, titanium acid Examples thereof include potassium, magnesium sulfate, lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, and dehydrated sludge.

Of these, calcium carbonate is preferably used as the inorganic filler in terms of the balance between weight and cost. These may be used alone or in combination of two or more.
The olefin-based resin is not particularly limited, and examples thereof include low-density polyethylene, high-density polyethylene, linear low-density polyethylene, atactic polypropylene, isotactic polypropylene, syndiotactic polypropylene, and poly α-olefin.
Further, it may be formed of a material different from the olefin-based material, and for example, a polyvinyl chloride-based resin (described above), a polystyrene resin, an ABS resin, an AS resin, an elastomer material, or the like may be used.
The hard resin used as the sound insulation cover main body of the sound insulation cover in the following modification will be described as vinyl chloride.

Here, the material used as the elastic material (rubber packing) forming a part of the sound insulation cover in the drainage pipe joint according to the modified example is generally a rubber material that can be used as so-called packing, and is typically a rubber material. , EPDM (ethylene propylene diene rubber), SBR (styrene butadiene rubber). In addition to these, thermoplastic elastomers, polyethylene foams, and the like can also be adopted.
The rubber material used as the elastic material (rubber packing) of the sound insulation cover in the following modification will be described as EPDM (ethylene propylene diene rubber).
Further, the material used as the ring elastic material (rubber ring) is not limited, but the same material as the elastic material (rubber packing) described above can be used.

<Modification example 1: Elastic material (rubber packing) on the sound insulation cover side>
The drainage pipe joint 101 according to the first modification will be described in detail with reference to FIGS. 16 and 17. FIG. 16 is a cross-sectional view showing a drainage pipe structure in which the drainage pipe joint 101 according to the first modification is adopted, and FIG. 17 is a sound insulation cover 731 (more accurately, a sound insulation cover main body) in the drainage pipe joint 101 of FIG. To explain the state in which the sound insulation cover 731 composed of 733 and the elastic material (rubber packing) 735, and optionally the vibration insulator 720) are set (for example, not at the construction site but at the manufacturing plant of the drainage pipe joint 101). It is a figure of.

As shown in these figures, the sound insulation cover 731 provided in the drainage pipe joint 101 according to this modification has a length corresponding to the total length of the vibration insulator 720 in the vertical direction and does not have elasticity. The elastic material (rubber packing) 735 is provided only at the upper end portion between the sound insulation cover main body 733 and the outer surface of the drainage pipe joint 101, or at the upper end portion and the lower end portion. .. In these figures, the elastic material (rubber packing) 735 is provided at both ends of the upper end and the lower end between the sound insulation cover main body 733 and the outer surface of the drainage pipe joint 101. However, it may be provided only at the upper end. The elastic material (rubber packing) 735 exhibits the water-stopping property, sound insulation property, and vibration insulation property of the drainage pipe joint 101 (same as the above-described embodiment although the material of the sound insulation cover main body is different from that of the above-described embodiment). be able to. Here, in the case where the elastic material (rubber packing) 735 is provided on the sound insulation cover main body 733 to form the sound insulation cover 731 as in the present modification (more specifically, the sound insulation cover 731 (sound insulation cover main body 733 + elastic material (sound insulation cover main body 733 + elastic material)). The manufacturing method of setting the rubber packing) 735) in the drainage pipe joint (main body) or the sound insulation cover 731 (sound insulation cover main body 733 + elastic material (rubber packing) 735) is set in the through hole, and then the drainage pipe joint (main body) is installed. The elastic material (rubber packing) 735 (more specifically, the upper recess 733DU and the lower recess 733DD) is fitted into the recess (more specifically, the upper recess 733DU and the lower recess 733DD) on the inner peripheral surface of the sound insulation cover main body 733 of the sound insulation cover. To be provided). Here, regarding these two dents, if the elastic material (rubber packing) 735 is provided only on the upper side, the sound insulation cover main body 733 may not be provided with the lower dent 733DD. As shown in FIG. 17, the elastic material (rubber packing) 735 has a cross section because it is easy to insert the drainage pipe joint 101 other than the sound insulation cover 731 from above the sound insulation cover 731 so that it does not return in the middle of insertion. It has a checkered return part.

In this modification, the elastic material (rubber packing) 735 is provided on the inner peripheral surface of the sound insulation cover main body 733, and this point relates to the second modification provided on the outer peripheral surface of the drainage pipe joint. It is different from the drainage pipe joint 103.
As described above, the sound insulation cover main body 733 is made of hard resin, although it is not limited.

In order for the drainage pipe joint 101 according to the present modification to have such a configuration, the outer layer member 701 has a three-layer structure and is elastic from the outer surface of the drainage pipe joint 101 (however, the outermost layer sound insulation cover 731 is formed). The reason why the elastic material (rubber packing) 735 has a small contact area is that the material (rubber packing) 735 is provided with a portion where the sound insulation cover 731 is the innermost layer because the material (rubber packing) 735 comes into contact with the outer surface of the drainage pipe joint 101. (Ignore as), damping material 714 (or heat-expandable fireproof sheet 712), vibration insulator 720 formed of fire-resistant inorganic fibers, sound insulation cover 731 (sound insulation cover body 733 and elastic material (rubber packing) 735). In order, they are provided on the outer surface of the pipe body 110.

As described above, in the drainage pipe joint 101 according to the present modification, the elastic material (rubber packing) 735 is the inner peripheral surface of the sound insulation cover main body 733 of the sound insulation cover 731 (more limitedly, the upper recess 733DU and the lower recess 733DD). ), The sound insulation cover 731 (more accurately, the sound insulation cover main body 733 and the elastic material (rubber packing) 735, and optionally the vibration insulator 720) constituting the sound insulation cover 731) is drained. The joint 101 (more accurately, other than the sound insulation cover main body 733, the elastic material (rubber packing) 735, and the vibration insulator 720 that constitute the sound insulation cover 731) will be set.

Here, as shown in FIG. 17, the sound insulation cover 731 is connected to the drainage pipe joint 101 via a ring-shaped elastic ring elastic material (rubber ring) 900 corresponding to the outer diameter of the drainage pipe joint 101. Contact the outer surface. In the connection between the horizontal branch pipe connecting portion 140 and the pipe main body 110 in the drainage pipe joint 101, the horizontal branch pipe connecting portion 140 is internally fitted into the pipe main body 110 (with the inner peripheral surface of the fitting portion 902 of the pipe main body 110). Since the outer peripheral surface of the fitting portion 904 of the lateral branch pipe connecting portion 140 is joined), the outer peripheral surface of the lateral branch pipe connecting portion 140 and the outer peripheral surface of the pipe main body 110 are indicated by white triangular marks in FIG. As described above, a step is formed in which the pipe body 110 side protrudes. In the state where this step is generated, as shown in FIG. 17, the sound insulation cover 731 (more accurately, the vibration insulator 720 in addition to the sound insulation cover 731) is attached to the drainage pipe joint 101 (more accurately, the sound insulation cover). When setting (other than 731 and vibration insulator 720), it may be difficult to set the sound insulation cover 731 due to this step. Therefore, in order to eliminate this step, a ring elastic material (rubber ring) 900 is provided on the outer peripheral surface of the lower portion 905 of the water collecting chamber of the lateral branch pipe connecting portion 140, and is indicated by a black-painted triangular mark and a white triangular mark. The step is eliminated.

The ring elastic material (rubber ring) 900 has an inner diameter corresponding to the outer diameter of the fitting portion 904 of the lateral branch pipe connecting portion 140 (= outer diameter of the lower part 905 of the water collecting chamber), and its thickness (outer diameter). Corresponds to the outer diameter of the fitting portion 902 of the pipe body 110, and when this ring elastic material (rubber ring) 900 is set in the fitting portion 904 of the lateral branch pipe connecting portion 140, the ring elastic material (rubber ring) 900 The outer diameter of the pipe body 110 becomes substantially equal to the outer diameter of the fitting portion 902 of the pipe body 110 indicated by the white triangle mark, the above-mentioned step is eliminated, and the sound insulation cover 731 is eliminated. (More accurately, in addition to the sound insulation cover 731, the vibration insulator 720 is optional), and the workability of setting the drainage pipe joint 101 (more accurately, other than the sound insulation cover 731 and the vibration insulator 720) is improved. do.
Regarding this ring elastic material (rubber ring) 900, not only in the two modifications, but also in the case where the sound insulation cover body is made of a rubber-based material such as EPDM (that is, all the drainage pipe joints according to the above-described embodiment). It can be preferably applied.

Here, in all the above-described embodiments, the vibration insulator 720 is fixed by spotting at two to four locations in the circumferential direction of the sound insulation cover 730 on the outer layer side, but the present invention is not limited thereto. .. For example, in the drainage pipe joints according to all the above-described embodiments and in the drainage pipe joints according to all the deformation examples (deformation example 1 and deformation example 2), the vibration insulator 720 is a sound insulation cover on the outer layer side. The vibration insulator 720 may be fixed to the sound insulation cover on the outer layer side by continuously or intermittently fixing the outer circumference of the vibration insulator 720 at at least one position in the height direction of the vibration insulator. In this way, the vibration insulator 720, which is an example of a rock wool sheet, is loosely provided as an intermediate layer by fixing it to the sound insulation cover on the outer layer side instead of the vibration damping material 714 on the inner layer side in a continuous or intermittent manner for one outer circumference. As a result, sound absorption and fire resistance (when a heat-expandable fire-resistant material is provided in place of / in addition to the vibration damping material 714), sound insulation and vibration insulation are exhibited, and EPDM rubber (soft) is used as the outermost layer. ) Sound insulation cover 730 with a cover as an example or sound insulation cover 731 (sound insulation cover body 733 and elastic material (rubber packing) 735) with a hard vinyl chloride cover as an example are provided to provide water stoppage, sound insulation and vibration insulation. By expressing, the vibration generated in the drainage pipe joint can be suppressed extremely effectively.
As described above, the drainage pipe joint 101 according to the present modification can also exhibit the same action and effect as the drainage pipe joint according to the above-described embodiment.

<Modification example 2: Elastic material (rubber packing) on the drainage pipe joint (main body) side>
The drainage pipe joint 103 according to the second modification will be described in detail with reference to FIGS. 18 and 19. FIG. 18 is a cross-sectional view showing a drainage pipe structure in which the drainage pipe joint 103 according to the second modification is adopted, and FIG. 19 is a sound insulation cover 741 (more accurately, a sound insulation cover main body) in the drainage pipe joint 103 of FIG. It is a figure for demonstrating the state which sets (only 743) (for example, not in a construction site but in a manufacturing factory of a drainage pipe joint 103).

In the drainage pipe joint 101 according to the first modification and the drainage pipe joint 103 according to the second modification, the elastic material (rubber packing) 735 is formed on the inner peripheral surface of the sound insulation cover body 733 of the sound insulation cover 731 in the drainage pipe joint 101. In contrast to the point that the drainage pipe joint 103 is provided, in the drainage pipe joint 103 (rather than the sound insulation cover main body 743 of the sound insulation cover 741), the outer peripheral surface of the drainage pipe joint 103 (more specifically, the lower part of the water collecting chamber of the lateral branch pipe connection portion 140). The difference is that the elastic material (rubber packing) 745 is provided in 905). Since the other configurations of the drainage pipe joint 103 according to the present modification are the same as those of the drainage pipe joint 101 according to the first modification described above, the detailed description here will not be repeated. In the drainage pipe joint 103 according to the modified example, the ring elastic material (rubber ring) 900 is not shown because it is an optional requirement (basically unnecessary) in the present invention.

In order for the drainage pipe joint 103 according to the present modification to have such a configuration, the outer layer member 703 has a three-layer structure and is elastic from the outer surface of the drainage pipe joint 103 (however, the outermost layer sound insulation cover 741 is formed). The reason why the elastic material (rubber packing) 745 has a small contact area is that the material (rubber packing) 745 is provided with a portion where the sound insulation cover 741 is the innermost layer because the material (rubber packing) 745 comes into contact with the outer surface of the drainage pipe joint 103. 714 (or heat-expandable fire-resistant sheet 712), vibration insulator 720 formed of fire-resistant inorganic fiber, sound insulation cover 741 (sound insulation cover body 743 and drainage pipe joint 103 provided on the outer surface). The elastic material (rubber packing) 745) is provided on the outer surface of the pipe body 110 in this order.

As described above, in the drainage pipe joint 103 according to the present modification, since the elastic material (rubber packing) 745 is provided on the outer peripheral surface of the drainage pipe joint 103, the sound insulation cover 741 (more accurately, the sound insulation cover 741). The drainage pipe joint 103 (more accurately, other than the sound insulation cover main body 743 of the sound insulation cover 741) is set in the sound insulation cover main body 743 only.
As described above, the drainage pipe joint 103 according to the present modification can also exhibit the same action and effect as the drainage pipe joint according to the above-described embodiment.

<Construction method of deformation example 1 and deformation example 2>
With reference to FIGS. 20 and 21, a method of constructing the drainage pipe joint 101 according to the first modification and a method of constructing the drainage pipe joint 103 according to the second modification will be briefly described. This construction method is not the method of manufacturing the drainage pipe joint in the drainage pipe joint manufacturing factory shown in FIGS. 17 and 19, but the through hole made in the floor slab S of the building which is the construction site of the drainage pipe joint. This is a construction method for installing drainage pipe joints.

What is characteristic is that after setting the sound insulation cover in the through hole of the floor slab S and burying the sound insulation cover in the floor slab S with a filler M such as mortar, drainage pipes other than the sound insulation cover are installed in the buried sound insulation cover. This is a construction method for setting joints.
In the method of constructing the drainage pipe joint according to the present invention, the drainage pipe joint with the sound insulation cover set (that is, completed as the drainage pipe joint including the sound insulation cover) is set in the through hole of the floor slab S, and the mortar is used. The drainage pipe joint may be embedded in the floor slab S with a filler M such as (conventional). That is, after setting the sound insulation cover (at a manufacturing plant of the drainage pipe joint) as shown in FIG. 17 and completing the drainage pipe joint 101 as shown in FIG. 16, the completed drainage pipe joint 101 is placed on the floor. By setting the drainage pipe joint 101 in the through hole of the slab S and burying the drainage pipe joint 101 in the floor slab S with a filler M such as mortar, or as shown in FIG. ) Set and complete the drainage pipe joint 103 as shown in FIG. 18, then set the completed drainage pipe joint 103 in the through hole of the floor slab S and use a filler M such as mortar to complete the drainage pipe joint 103. Is constructed by burying it in the floor slab S.

In the drainage pipe joint 101 according to the first modification, as shown in FIG. 20, the sound insulation cover 731 (more accurately, the sound insulation cover 731 composed of the sound insulation cover main body 733 and the elastic material (rubber packing) 735, and more optionally However, after setting the vibration insulator 720) in the through hole of the floor slab S and burying the sound insulation cover 731 in the floor slab S with a filler M such as mortar, the buried sound insulation cover 731 (more accurately, sound insulation). In addition to the cover 731, the drainage pipe joint 101 (more accurately, other than the sound insulation cover 731 and the vibration insulator 720) is set in the vibration insulator 720).

In the drainage pipe joint 103 according to the second modification, as shown in FIG. 21, the sound insulation cover 741 (more accurately, only the sound insulation cover main body 743) is set in the through hole of the floor slab S and a filler such as mortar is set. After burying the sound insulation cover 741 in the floor slab S with M, the drainage pipe joint 101 (more accurately, the sound insulation of the sound insulation cover 741) is connected to the buried sound insulation cover 741 (more accurately, only the sound insulation cover main body 743 of the sound insulation cover 741). Set the cover body (other than 743).

In this way, the sound insulation cover can be installed by first burying it in the through hole of the floor slab S, and then inserting a drainage pipe joint other than the sound insulation cover from above the sound insulation cover to integrate the sound insulation cover. .. Therefore, before placing concrete in the floor slab S, the void pipe is erected vertically on the floor base and fixed, and concrete is poured around the void pipe to form a concrete floor, which is cured, and a cavity is formed inside the void pipe. When the through hole is used, the void pipe of paper, resin or metal is usually pulled out after curing (the metal void pipe may not be pulled out), and the gap between the through hole and the drainage pipe joint is filled with a filler. Although work was required, if a sound insulation cover was used instead of such a void pipe (before the concrete placement of the floor slab S, the sound insulation cover was erected vertically on the floor base and fixed, and concrete was used around it. (Assuming that a concrete floor is constructed by pouring in), it is not necessary to fill the gap between the through hole and the drainage pipe joint with a filler (and because the void pipe is not used in the first place, the work of pulling out the void pipe is unnecessary. Point) is preferable. In this case, the length of the sound insulation cover is preferably equal to or shorter than the thickness of the slab (in that it does not interfere with the on-site work of pouring concrete around the sound insulation cover).

Further, in the case of such construction, when the drainage pipe joint is renewed, it is preferable that only the sound insulation cover can be left in the through hole of the floor slab S and the parts other than the sound insulation cover can be renewed.
Here, in order to shorten the construction period, it is conceivable that the drainage pipe joint is placed in the PC board in advance at the PC board manufacturing factory that manufactures the PC (precast concrete) board. In this case, instead of making a through hole in the floor slab S first and installing a drainage pipe joint in the through hole to fill the gap (the gap between the through hole and the drainage pipe joint) with a filler. It can be assumed that the drainage pipe joint is directly buried in the PC board in the PC board manufacturing factory. Based on such an assumption, it is conceivable to directly bury (place) the sound insulation cover in the PC plate in advance, as in the case of using the sound insulation cover instead of the void tube described above. That is, since the gap between the drainage pipe joint and the through hole in the floor slab is not filled with the filler, in the modified example of the present invention, filling the gap with the filler is an essential requirement in the construction method. It may not be. Even in this case, as described above, the length of the sound insulation cover should be the same as or shorter than the thickness of the slab (here, the thickness of the PC plate) (in the PC plate manufacturing work in which concrete is poured around the sound insulation cover). Preferred (in that it does not get in the way).

As described above, the sound insulation cover is set as shown in FIGS. 17 and 19 without burying any of the parts constituting the drainage pipe joint in the floor slab S first (completed as the drainage pipe joint). The drainage pipe joint shown in FIGS. 16 and 18 completed including the sound insulation cover is inserted into the through hole of the floor slab S, and the outer peripheral surface of the drainage pipe joint (here, the outermost circumference is the sound insulation cover). ) And the inner peripheral surface of the through hole are filled with a filler M such as mortar to construct a drainage pipe joint on the floor slab S, which is not excluded by the present invention.

It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The present invention is preferable for a drainage pipe joint provided through a floor slab S of a building, and is a drainage pipe joint provided through a floor slab of a building, and has optimum vibration damping performance, vibration insulation performance, and vibration insulation performance. It is particularly preferable in that sound insulation performance can be exhibited.

100, 200 Drainage pipe joint 110, 210 Pipe body 112, 212 Indentation 114 Swing blade 120 Standing pipe connection 130, 230 Drainage pipe connection 140 Horizontal branch pipe connection 142 Water collection room 144, 146, 148 Horizontal branch pipe connection Member 520 (Upper floor side) Drainage stand pipe 530 (Lower floor side) Drainage stand pipe 540 (Lower floor side) 90 degrees (Compact) Vent pipe 612 Thermal expansion fireproof material 700, 800 Outer layer member 710 Innermost layer 712 Thermal expansion Fireproof sheet 714 Anti-vibration material 720, 820 Vibration insulator (formed by fire-resistant inorganic fiber) 730 Sound insulation cover

Claims (16)

An upper pipe connection part that connects a pipe body arranged in a through hole of a floor slab when it is installed in a building, and a drainage vertical pipe that protrudes above the floor slab and allows drainage from an upper floor to flow in. A drainage pipe joint provided with a drainage pipe connection portion for connecting a drainage pipe that protrudes below the floor slab and allows drainage to flow out to the lower floor, and a horizontal branch pipe connection portion for connecting a drainage lateral branch pipe above the floor slab. And
A drainage pipe joint comprising a damping material integrally provided on at least a part of an outer peripheral surface of a portion of the pipe body that passes through the through hole. The drainage pipe joint according to claim 1, wherein the vibration damping material is adhered or adhered to the entire surface of the outer peripheral surface on which the vibration damping material is provided. The drainage pipe joint according to claim 1 or 2, wherein the vibration damping material is formed in a sheet shape and wound around the outer peripheral surface. The drainage pipe joint according to any one of claims 1 to 3, wherein a vibration insulator is further provided on the outer periphery of the vibration damping material. The drainage pipe joint according to claim 4, wherein a sound insulation cover is provided on the outer periphery of the vibration insulator. The drainage pipe joint according to claim 5, wherein the vibration insulator is fixed to the sound insulation cover on the outer layer side. The pipe body includes at least a straight pipe portion and a reduced diameter portion below the straight pipe portion.
The drainage pipe according to claim 5 or 6, wherein the vibration insulator is intermittently fixed in the circumferential direction of the sound insulation cover in a height range corresponding to the straight pipe portion. Fitting. The drainage pipe joint according to any one of claims 5 to 7, wherein the vibration insulator is fixed by spotting at two to four points in the circumferential direction of the sound insulation cover on the outer layer side. .. The drainage pipe joint is formed of one or more resin injection molded products.
The invention according to any one of claims 1 to 8, wherein a sheet-shaped heat-expandable refractory material is provided on the outer peripheral surface in place of at least a part of the vibration damping material. Drainage pipe fitting. The drainage pipe joint is formed of one or more resin injection molded products.
The pipe body includes at least a straight pipe portion and a reduced diameter portion below the straight pipe portion.
A heat-expandable fire-resistant material is provided on the inner layer side of the vibration insulator in place of a part of the vibration-damping material, and is located above the heat-expandable fire-resistant material and has a height corresponding to the straight pipe portion. The drainage pipe joint according to any one of claims 5 to 8, wherein the vibration insulator is fixed to the sound insulation cover on the outer layer side at the position. 1. The vibration damping material is formed by containing a butyl-based or asphalt-based material, and the sound insulation cover is formed by containing a rubber-based, elastomer-based or olefin-based material. The drainage pipe joint according to any one of claims 10. The sound insulation cover includes a non-stretchable cover body having a length corresponding to the total length of the vibration insulator in the vertical direction.
5. A claim, wherein an elastic material is provided only at the upper end portion between the cover main body and the outer surface of the drainage pipe joint, or at the upper end portion and the lower end portion. Drainage pipe fittings described in. The drainage pipe joint according to claim 12, wherein the elastic material is provided on the inner peripheral surface of the cover body or the outer surface of the drainage pipe joint. The drainage pipe joint according to claim 12 or 13, wherein the cover body is made of a hard resin. Claims 5 to 5, wherein the sound insulation cover abuts on the outer surface of the drainage pipe joint via a ring-shaped and elastic ring elastic material corresponding to the outer diameter of the drainage pipe joint. The drainage pipe fitting according to any one of items 8 and 10. The vibration insulator is fixed to the sound insulation cover on the outer layer side by continuously or intermittently fixing one outer circumference of the vibration insulator at at least one position in the height direction of the sound insulation cover on the outer layer side. The drainage pipe joint according to claim 5, wherein the drainage pipe joint is fixed.

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