JPH07119198A - Sound insulation structure, and sound insulation pipe for piping for fluid - Google Patents

Abstract

PURPOSE:To prevent drainage noise from propagating to a building by a method wherein a flanged sound-insulation pipe made up by coating a metal pipe with plastics is fitted into a through hole provided to the building, and a drainpipe is inserted therethrough. CONSTITUTION:A plastic sound insulation pipe 32 having a flange 35, made up by coating a pipe body made of heavy metal with plastics, is fitted into a through hole 31 of a floor panel 21 with the flange 35 held for positioning. Then, a drainpipe 13 of a toilet bowl or the like is inserted into the sound insulation pipe 32 and piping is made therewith. Noise arising from running water is insulated by the sound insulation pipe 32 and prevented from propagating to a building. Thereby, noise inside the building 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 sound insulation structure for a fluid pipe and a sound insulation cylinder.

[0002]

2. Description of the Related Art Conventionally, there is a drainage sound preventing structure for a toilet as described in Japanese Patent Publication No. 3-7768. In this conventional technique, a sound absorbing material is interposed between the drain pipe and the through hole when the drain pipe is installed through the through hole provided in the floor on which the toilet is fixedly installed.

In this prior art, the drainage sound generated in the drainage pipe is transmitted from the inside to the outside of the drainage pipe to the sound absorbing material. The drainage sound transmitted to this sound absorbing material is absorbed by the sound absorbing material. It is possible to prevent the material from being absorbed and transmitted to the floor.

[0004]

However, in the prior art, since the sound absorbing material is only interposed between the outer peripheral portion of the drain pipe and the inner peripheral portion of the floor through hole, the drainage transmitted to the sound absorbing material is not provided. Part or almost all of the sound penetrates the sound absorbing material. Then, as a result of the drainage sound transmitted through the sound absorbing material being transmitted to the floor, it is transmitted to the toilet and the adjacent room with the resonance of the floor and becomes noise.

An object of the present invention is to prevent fluid noise generated in a fluid pipe from being transmitted to a structural portion of a building, and to prevent noise in the building.

[0006]

According to a first aspect of the present invention, in a sound insulation structure for a fluid pipe installed through a through hole provided in a structural portion of a building, a metal body is molded in a plastic molding cylinder. Using a sound insulation cylinder, the sound insulation cylinder having an outer peripheral portion of the through hole charging portion of the fluid pipe,
It is arranged so as to be interposed between the inner peripheral portion of the through hole.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the metal body is a cylindrical metal body made of a heavy metal.

The present invention according to claim 3 is the sound insulation tube according to claim 1 or 2.

According to a fourth aspect of the present invention, in addition to the third aspect of the present invention, the sound insulation cylinder is provided with a collar portion that can be engaged with the peripheral edge portion of the opening of the through hole. is there.

[0010]

[Operation] Since the sound insulation cylinder is a plastic molded cylinder in which a metal body is wrapped and is made of a heavy material, the sound insulation performance is high. Therefore, the fluid noise generated in the fluid piping is
Although the sound is radiated from the inside to the outside of the fluid pipe, the radiated fluid sound is reliably insulated by the sound insulation cylinder. That is, since the fluid sound does not pass through the sound insulation cylinder and is not transmitted to the floor, the floor does not resonate due to the fluid sound transmission to generate noise in the building.

The sound-insulating cylinder is a plastic-molded cylinder in which a metal body is wrapped. The sound-insulating cylinder does not corrode when leaked liquid comes into contact with a joint of a fluid pipe, and its sound-insulating performance is stable for a long period of time.

When the metal body in the sound insulation cylinder is made of a cylindrical metal body made of a heavy metal such as a lead sheet, the sound insulation performance can be further improved.

Since the sound insulation cylinder is provided with the collar portion, the sound insulation cylinder is easily positioned and fixed by locking the collar portion to the peripheral edge portion of the opening of the through hole, so that the attaching property can be improved.

[0014]

1 is a schematic view showing an embodiment of the present invention, FIG.
[Fig. 3] is a schematic view showing a sound insulation cylinder. In FIG. 1, 10 is a building, 11 is a toilet on the second floor, 12 is a toilet bowl, and 13 is a drain pipe connected to the toilet bowl 12.

The building 10 is composed of a wooden building unit 20, and is constructed by joining a plurality of building units 20 in the horizontal and vertical directions. Each building unit 20 is configured by vertically arranging a wall panel 22 on a peripheral edge portion of a floor panel 21. Then, the floor panel 21 is configured by fixing the floor surface material 24 to the upper surface of the floor framework 23 made of floor joists, and the wall panel 22 is one of the wall framework 25 made of an upper frame, a lower frame, and a vertical frame. It is configured by fixing the wall members 26, 26 to the outer surface.

In the building 10, the second floor panel 21 is provided.
A ceiling surface material 28 is fixed to the lower surface of the through the edge 27.

However, the toilet 12 is fixedly installed on the second floor panel 21, and the drain pipe 13 extends through the through hole 31 provided in the floor panel 21 (including the ceiling panel 28) to the first floor side. Be present.

At this time, a sound insulating tube 32 is interposed between the outer peripheral portion of the drainage pipe 13 in which the through hole 31 is inserted and the inner peripheral portion of the through hole 31.

The sound-insulating cylinder 32 is a cast-in-mold molding so that the metal body 33 is wrapped in the plastic molding cylinder 34. As the metal body 33, a tubular metal body made of a heavy metal such as a lead sheet can be used. Here, the heavy metal refers to a metal having a relatively large specific gravity, particularly one having a specific gravity of 4.0 or more.

The sound insulation cylinder 32 is provided with a flange 35 (collar portion) on the outer peripheral portion of the upper end, and the flange 35 and the through hole 31.
It is fixedly installed with the rubber-like elastic body 36 interposed between the upper end opening and the peripheral edge portion.

The rubber-like elastic body 36 damps the vibration due to the drainage sound generated in the toilet bowl 12 by its elastic deformation,
This vibration is prevented from being transmitted to the floor panel 21.

The sound insulation cylinder 32 is fixed by screwing the flange 35 to the floor panel 21, joining the flange 35 and the rubber-like elastic body 36 to the floor panel 21 with an adhesive, or draining the inner surface of the plastic molding cylinder 34. Any method such as bonding to the outer surface of the tube 13 with an adhesive or the like may be used.

The operation of this embodiment will be described below. The sound insulation tube 32 includes a metal body 3 inside a plastic molding tube 34.
The sound insulation performance is high because it encloses 3 and is made of a heavy material. Therefore, the drainage sound generated in the drainage pipe 13 is radiated from the inside to the outside of the drainage pipe 13, and this radiated drainage sound is reliably insulated by the sound insulation tube 32. That is, the drainage sound does not pass through the sound insulation tube 32,
Since it is not transmitted to the floor panel 21, the floor panel 2
There is no possibility that 1 will resonate due to the transmission of drainage noise and generate noise in the space of the toilet 11 and the adjacent room.

The sound-insulating cylinder 32 is formed by enclosing the metal body 33 in the plastic molding cylinder 34, and does not corrode even if the leaked drainage liquid comes into contact with the joint of the drainage pipe 13 or the like.
Its sound insulation performance is stable for a long time.

Since the metal body 33 in the sound insulation cylinder 32 is composed of the cylindrical metal body 33 in which a heavy metal such as a lead sheet is formed into a cylinder, the sound insulation performance can be further enhanced.

Since the sound insulation cylinder 32 is provided with the flange 35, the sound insulation cylinder 32 is easily positioned and fixed by locking the flange 35 to the peripheral edge portion of the upper end opening of the through hole 31 (via the rubber elastic body 36). , Its mountability can be improved.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention. For example, the present invention
It can be applied not only to the drainage pipe of the toilet but also as a sound insulation structure for other water supply and drainage pipes, air ducts and other fluid pipes. The through holes for the fluid piping are not limited to those provided on the floor, but may be those provided on the walls such as the outer wall and the partition wall.

Further, in the sound insulation cylinder of the present invention, the metal body may not necessarily have a cylindrical shape but may be molded by being wrapped in a plastic molding cylinder in a plate shape, a rod shape, or a granular shape.

[0029]

As described above, according to the present invention, it is possible to prevent the fluid sound generated in the fluid pipe from being transmitted to the structural portion of the building and to prevent the noise in the building.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a schematic view showing a sound insulation cylinder.

[Explanation of symbols]

 10 Building 13 Drainage Pipe (Pipe for Fluid) 21 Floor Panel (Structure of Building) 31 Through Hole 32 Sound Insulation Tube 33 Metal Body 34 Plastic Molding Tube 35 Flange (Brim)

Claims (4)

[Claims] 1. A sound insulation structure for a fluid pipe installed through a through hole provided in a structural part of a building, wherein a sound insulation cylinder in which a metal body is wrapped in a plastic molding cylinder is used. A sound insulation structure for a fluid pipe, characterized by being interposed between an outer peripheral portion of the through hole charging portion of the fluid pipe and an inner peripheral portion of the through hole. 2. The sound insulation structure for a fluid pipe according to claim 1, wherein the metal body is a tubular metal body made of a heavy metal. 3. The sound insulation tube according to claim 1 or 2. 4. The sound insulation cylinder according to claim 3, wherein the sound insulation cylinder is provided with a collar portion that can be locked to an opening peripheral edge portion of the through hole.