JP2002275975A - Muffling drain pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measure for preventing the emission of drain noise to rooms from a drain pipe installed by penetrating through floor slabs in a multi-floor building though there is a conventional means by attaching a covering material having a vibration-proof elastic member around the drain pipe but this kind of construction is unable to prevent the water leakage in a direction transmitting through the floor slab. SOLUTION: A vibration insulating body 6 is provided in an extraporating manner around a pipe main body 5 and a waterproof ring 7 is covered and lidded on the upper ring-shaped surface of the vibration insulating body 6 so that any water leak permeating in the thickness direction of the floor slab 2 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise-reducing drain pipe capable of preventing noise at the time of drainage, which is called a skeleton-borne noise.

[0002]

2. Description of the Related Art In a drainage pipe system used in a multi-storey building such as an apartment house, drainage noise is transmitted to a floor slab and radiated into a room with respect to a drainage pipe installed through a floor slab. Various measures have been proposed as measures to prevent so-called body-borne sound. For example, assuming that a sheet metal coating material is provided around the drain pipe, on the inner surface of this coating material, a ring-shaped fire-resistant elastic material and a vibration-proof elastic material are alternately arranged along the pipe axis direction, There is a method in which the inner peripheral surface of each of these elastic materials is brought into contact with the outer surface of the tube, and mortar is filled between the outer surface of the coating material and the inner peripheral surface of the through-hole provided in the floor slab (Japanese Patent Laid-Open No. 10-108). 238661).

[0003] The above-mentioned covering material is composed of two members having a shape such that a hollow frustoconical shape having a diameter slightly larger than the drainage pipe is halved in the vertical direction, facing each other (so that the drainage pipe is held on both sides thereof). Te) to be combined. In addition to this, a fire-resistant vibration absorbing material such as rock wool is packed between the outer peripheral surface of the drain pipe and the inner peripheral surface of the through-hole, or a tape-shaped fire resistant vibration absorbing material is drained. There has been a method in which a mortar is applied by winding around a pipe, and the mortar is filled between the outer surface of the vibration absorbing material and the inner peripheral surface of the through hole.

[0004]

In the countermeasures for preventing the sound from propagating in the skeleton, which has been conventionally adopted, there has been a problem that it is impossible to prevent water leakage around the drain pipe such that the floor slab penetrates in the thickness direction. That is, in the case of using the coating material having the half-split structure, a vertical joining gap is formed along the joining surface, and a lock is formed between the outer peripheral surface of the drain pipe and the inner peripheral surface of the through hole. In the case where a fire-resistant vibration absorbing material such as wool is packed, the rock wool itself has water permeability.

[0005] Therefore, when a water leakage accident occurs during construction or in a dwelling on each floor, water flows from the floor where the water leaked to the lower floor in a state of penetrating the above-mentioned joint gap or rock wool itself. There was a problem that it would. In addition, a fire-resistant vibration-absorbing material formed in a tape shape is wound and applied around a drain pipe, and mortar is packed between the outer surface of the vibration-absorbing material and the inner peripheral surface of the through-hole. The construction was troublesome. The present invention has been made in view of the above circumstances, and it is possible to prevent water leakage that permeates a floor slab in its thickness direction,
It is an object of the present invention to provide a silencing drainage pipe that can be easily constructed.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, the silencing drainage pipe according to the present invention is fitted externally to a pipe main body that is piped through a through hole provided in a floor slab, and a pipe outer peripheral surface of a portion of the pipe main body that passes through the through hole. A vibration insulator that directly or indirectly fills the circumference of the through hole with the inner peripheral surface of the through hole, and a waterproof ring that entirely covers the upper annular surface of the vibration insulator at the level of immersion into the through hole. And

The fact that the space between the vibration insulator and the inner peripheral surface of the through hole is directly or indirectly filled means that the space between the outer peripheral surface of the vibration insulator and the inner peripheral surface of the through hole is filled. It means that mortar or the like may or may not be filled. As described above, since the upper annular surface of the vibration insulator is covered with the waterproof ring, even if water leakage occurs on the floor slab, the vibration insulator is transmitted through the floor slab in the thickness direction through the vibration insulator. Water leakage will be prevented.
Of course, the body propagation sound is absorbed or attenuated by the vibration insulator, and the propagation to the floor slab side is suppressed or eliminated.

It is preferable that the vibration insulator has fire resistance. Further, it is preferable that the vibration insulator be covered with a metal sheath over the entire outer peripheral surface thereof. The inner peripheral surface of the waterproof ring may be provided with irregularities capable of forming a closed space with the outer peripheral surface of the pipe. By doing so, the vibration absorbing effect of the waterproof ring can be further enhanced. The waterproof ring can be made of rubber.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of a silencing drainage pipe 1 according to the present invention. The silencing drainage pipe 1 is installed in a multi-story building such as an apartment house, and vertically penetrates a through hole 3 provided in a floor slab 2 that divides each floor. In the present specification, the floor slab 2 in this case is not limited to one that divides each floor, but may be a building body provided in a horizontal direction and a vertical through hole for piping. Includes all those with

The silencing drainage pipe 1 according to the present invention has, for example, a drainage collecting pipe as shown in the figure as a pipe main body 5 and a vibration insulator 6 and a waterproof ring 7 provided on the pipe main body 5 so as to be fitted externally. It has become. The vibration insulator 6
Has a metal outer skin 8 coated on the entire outer peripheral surface. In the illustrated example, a portion of the sound absorbing drain pipe 1 penetrating through the through hole 3 of the floor slab 2 is provided between the outer peripheral surface of the sound absorbing drain pipe 1 and the inner peripheral surface of the through hole 3 by a mortar 9.
Are filled.

The vibration insulator 6 is formed in a tubular shape to be fitted to the outer peripheral surface 5a of the pipe main body 5 at a portion passing through the through hole 3. In the case of the illustrated example, since the pipe outer peripheral surface 5a of the pipe main body 5 is formed as a tapered pipe with a downward depression,
This vibration insulator 6 is also formed as a tapered hole in which at least the in-cylinder hole 6a becomes smaller in diameter toward the lower part. Therefore, in the vibration insulator 6, the in-cylinder hole 6 a can be brought into surface contact with the outer peripheral surface 5 a of the tube main body 5. Of course, it is in surface contact with the mortar 9 in the through hole 3 via the outer skin 8.

In the vibration insulator 6, the vertical position of the vibration insulator 6 with respect to the floor slab 2 is such that the upper annular surface of the vibration insulator 6 is immersed by a predetermined amount from the upper surface of the floor slab 2 into the through hole 3. The lower annular surface of the vibration insulator 6 is provided so as to be equal to or slightly below the lower surface of the floor slab 2. Such a vibration insulator 6 is formed of a porous sound absorbing material such as rock wool. In the case of rock wool, the vibration insulator 6 itself has fire resistance and flame insulation.

The metal sheath 8 makes the vibration insulator 6 have fire resistance or enhances fire resistance, makes the vibration insulator 6 waterproof, and further enhances the shape retention of the vibration insulator 6. It has an effect such as performing. Although the specific material is not particularly limited, for example, from the viewpoint of weight, formability, cost, and the like, it is preferable to use an aluminum-based alloy or the like. In order to attach the outer skin 8 to the vibration insulator 6, a method utilizing plastic deformation of the outer skin 8, a method of winding with a wire material or the like, or a method of bonding with a fire-resistant adhesive may be used. .

On the other hand, the waterproof ring 7 can entirely cover the upper annular surface of the vibration insulator 6. As described above, the vibration insulator 6 is provided at a level such that its upper annular surface is immersed in the through hole 3 of the floor slab 2, so that most of the waterproof ring 7 is fitted into the through hole 3. In the form of At this time, it is preferable that the upper end of the waterproof ring 7 is protruded upward from the upper surface of the floor slab 2 so that water can be returned. This waterproof ring 7
The inner diameter of the ring is made slightly smaller (about 2 mm in diameter) than the outer diameter of the outer peripheral surface 5a of the tube so that the outer peripheral surface 5a of the inner tube 5 can be brought into contact with the outer peripheral surface 5a without any gap. Is preferred.

[0015] Thereby, the waterproofness becomes better and more reliable. In the illustrated example, since the outer peripheral rib 10 is provided on the pipe main body 5, the inner step 11 for avoiding interference with the outer peripheral rib 10 is provided on the upper annular surface side of the waterproof ring 7. . However, if the outer peripheral rib 10 is not provided on the pipe main body 5, the inner step 1 is attached to the waterproof ring 7.
It is not necessary to provide 1. Such a waterproof ring 7 can be made of rubber. Needless to say, it is preferable to use a flame-retardant or fire-resistant rubber. In addition, it is preferable to select a material having rich elasticity as much as possible.

The sound-absorbing drain pipe 1 having such a configuration may be assembled as a sound-absorbing drain pipe 1 at the time of factory shipment. Also, the mounting of the waterproof ring 7 can be performed very simply and quickly. When assembling the silencing drainage pipe 1, an adhesive may be appropriately applied between the outer peripheral surface 5 a of the pipe main body 5 and the inner peripheral surface of the vibration insulator 6 or the inner peripheral surface of the waterproof ring 7. Good.

In the case of the silencing drain pipe 1, a mortar 9 is filled in the through hole 3 of the floor slab 2 by filling the mortar 9 with the inner peripheral surface of the surrounding through hole 3.
Vibration absorption and waterproofness can be obtained, and conventional disadvantages can be eliminated and eliminated. As shown in FIG. 3, the vibration insulator 6 can be formed into a tubular shape by being assembled to the pipe main body 5 in a state where the vibration insulator 6 is divided in half in the vertical direction (or the number of divisions is larger).

Even in this case, the waterproof ring 7
Water resistance will be maintained. As shown in FIG. 4, concave portions 15 and convex portions 16 are provided alternately on the inner peripheral surface of the waterproof ring 7 so that a closed space by the concave portion 15 is formed between the waterproof ring 7 and the outer peripheral surface 5 of the pipe main body 5. You can also By doing so, the vibration absorption is increased, and the contact area between the waterproof ring 7 and the pipe body 5 is reduced, which is preferable.
Although the concave portion 15 is a circumferential groove in the illustrated example, it is of course possible to divide the concave portion 15 in the circumferential direction.

By the way, the present invention is not limited to the above-described embodiment, and can be appropriately changed according to the embodiment. For example, the shape of the tube main body 5 is not limited at all, and may be a straight tube or the like. Therefore,
Naturally, a case where the spigot on the lower side of the tube main body 5 is a straight type can be considered. In this case, the vibration insulator 6 may be formed in a straight cylindrical shape. For example, as shown in FIGS. 5 and 6, the waterproof ring 7 is provided at an intermediate portion of the vibration insulator 6 in the vertical direction,
May be provided in the lower part of the.

In the vibration insulator 6, the outer cover 8 can be omitted. After installation, the vibration insulator 6
It is not always necessary to fill the mortar 9 around the periphery, and a structure may be employed in which the outer peripheral surface of the vibration insulator 6 or the outer cover 8 directly contacts the inner peripheral surface of the through hole 3.

[0021]

As is apparent from the above description, in the sound deadening drain pipe according to the present invention, a vibration insulator is provided around the pipe body in an external fitting manner, and a waterproof ring is provided on the upper annular surface of the vibration insulator. Is covered, so that water leakage that permeates the floor slab in its thickness direction can be prevented. In addition, construction can be easily performed.

[Brief description of the drawings]

FIG. 1 is a partially crushed side view showing a first embodiment of a sound deadening drainage pipe according to the present invention.

FIG. 2 is a perspective view of a vibration insulator and a waterproof ring employed in the sound deadening drain pipe of FIG. 1;

FIG. 3 is an exploded perspective view showing another embodiment of the vibration insulator.

FIG. 4 is an enlarged sectional view of a main part showing another embodiment of a vibration isolating ring.

FIG. 5 is a cross-sectional view showing another embodiment of the present invention.

FIG. 6 is a cross-sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Silence drainage pipe 2 Floor slab 3 Through-hole 5 Pipe main body 5a Pipe outer peripheral surface 6 Vibration insulator 7 Waterproof ring 8 Outer shell 15 Depression 16 Convex

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F16L 5/04 F16L 5/02 J 55/00 M 55/04 55/00 F

Claims (5)

[Claims] 1. A pipe main body (5) installed in a pipe through a through hole (3) provided in a floor slab (2), and the pipe main body (5) passes through the through hole (3). Vibration insulator (6) which is externally fitted to the outer peripheral surface (5a) of the portion and directly or indirectly fills the space between the inner peripheral surface of the through hole (3) and the inner periphery.
And a waterproof ring (7) for completely covering the upper annular surface of the vibration insulator (6) at a level immersed in the through hole (3). . 2. The silencing drain pipe according to claim 1, wherein said vibration insulator has fire resistance. 3. The silence drainage pipe according to claim 1, wherein the vibration insulator (6) is covered with a metal sheath (8) all around its outer peripheral surface. . 4. The unevenness (1) on the inner peripheral surface of the waterproof ring (7), which can form a closed space between the outer peripheral surface (5a) and the pipe.
5. The method according to claim 1, wherein (5) and (16) are provided.
The sound-deadening drain pipe according to claim 3. 5. The silencing drain pipe according to claim 1, wherein the waterproof ring is made of rubber.