JPH06306974A - Sound-insulating wall - Google Patents

Abstract

PURPOSE:To improve sound-insulating performance by holding a porous body by a first hard member and a second hard member, in which holes for absorbing a sound are dispersed and formed, and forming a wall material and integrally molding the two wall materials by an elastic spacer. CONSTITUTION:A first hard member 13 is stuck on one side of a porous body 12 so as to hold a porous body 12 while a second hard member 15, in which holes 14 for absorbing a sound are dispersed and formed, is pasted on the other side, thus shaping a wall material 9. A sound-insulating wall 4 is molded integrally through elastic spacers 11, in which pressure-sensitive adhesives are attached on both surfaces having natural frequency largely different from the wall material 9, so as to form an intermediate air layer between both two wall materials 9. Accordingly, aerial vibrations in the intermediate air layer are damped, thus further improving sound-insulating performance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall for partitioning a passage and a room in a building, or a sound insulation wall by a dry method used as a partition wall.

[0002]

2. Description of the Related Art Conventional sound insulation walls are generally classified into a wet construction method and a dry construction method. When using the wet method, although it has excellent sound insulation, it requires many steps and days such as formwork assembly, bar arrangement, concrete placement, curing, formwork removal, plastering, curing, paint finishing. It requires a large number of craftsmen, and also carries in reinforcing bars, concrete, and temporary formwork materials, and often carries out temporary formwork materials that are unnecessary after placing concrete, increasing the construction period and increasing the construction cost. There is a drawback to

Therefore, a sound insulation wall by the dry method according to the present invention was developed for the purpose of simplifying the construction, shortening the construction period, and reducing the construction cost. Conventionally, a light-celled concrete panel (ALC panel) or the like has been used. Build a stand alone, and put a plaster board etc. on it, or put a light weight steel frame as the lower bone, put a rock wool layer etc. between them and screw the plaster board to the light weight steel frame with screws, and on each of the plaster boards on both sides Furthermore, it is configured by pasting a plaster board.

[0004]

However, when a light-celled concrete panel (ALC panel) is used, the sound input from one side, that is, air vibration, is directly caused by the wall itself due to the small mass of the ALC panel. In addition, there is a drawback that the sound is easily transmitted to the other and the sound insulation performance is low.

In the case of a lightweight steel frame as the lower bone,
Although some air vibration can be dampened by passing through the rockwool layer between the plasterboards, much of the air vibration in the middle air layer causes the opposite plasterboard to vibrate, resulting in sound waves passing to the opposite side. Further, since the plasterboard is fixed to the lightweight steel frame with screws, there is a drawback that air vibration directly propagates from the plasterboard to the other side through the screws and the lightweight steel frame, resulting in low sound insulation performance.

The present invention has been made in view of the above-mentioned circumstances, and the sound insulation wall of the invention according to claim 1 can improve the sound insulation performance by attenuating air vibration in multiple stages by the porous body. And for the purpose of
The sound insulation wall of the invention according to claim 1 is intended to further improve the sound insulation performance by synergistically reducing the multi-stage air vibration by the porous body and the muffler effect.
An object of the sound insulation wall of the invention is to eliminate the pressure increase due to air vibration and to further improve the sound insulation performance.

[0007]

In order to achieve the above-mentioned object, the sound insulation wall of the invention according to claim 1 has a first hard plate material and a second hard plate material in which sound absorbing holes are dispersedly formed. The two wall materials formed by sandwiching the porous body with and the second hard plate materials face each other, and an intermediate air layer is formed between the facing second hard plate materials. It is integrally configured through elastic spacers having different natural frequencies.

In order to achieve the above-mentioned object, the sound insulation wall of the invention according to claim 2 comprises a first hard plate material,
Two wall materials constituted by sandwiching a porous body with a second hard plate material in which first holes for sound absorption are dispersedly formed, and a second wall material for venting air.
And a second hard plate member facing both sides of the porous plate member, and an intermediate air layer between the porous plate member and the second hard plate member. Is formed integrally with an elastic spacer having a natural frequency greatly different from that of the wall material.

In order to achieve the above-mentioned object, the sound insulation wall of the invention according to claim 3 has a partial pressure release hole in the wall material of the claim 2 which is the vibration input side. While forming, at the position facing the pressure relief hole,
A silencer for preventing direct sound from the vibration input side is provided in the intermediate air layer.

[0010]

According to the structure of the sound insulation wall of the invention according to claim 1,
As shown in the cross-sectional view of the main part for explaining the sound insulation effect of FIG. 7, as sound is input from one of the walls to the first hard plate member 13, its air vibrations propagate to the porous body 12 and When the damped air vibrations are propagated through the body 12 and the damped air vibrations propagate from the sound absorbing holes to the intermediate air layer 10, a part of the air vibrations is generated on the second hard plate member 15 on the side opposite to the input side. Reflected by the sound absorbing hole 14 formed in the second hard plate member 15 on the input side and propagated into the porous body 12 to be attenuated. Further, another air vibration is directly or after repeating reflection. Hole 1 formed in the second hard plate member 15 on the side opposite to the input side
4 propagates into the porous body 12 and is attenuated. Further, the vibration energy of the wall material is attenuated by elastic spacers having different natural frequencies. These phenomena can prevent sound from propagating from one of the walls to the other.

Further, according to the structure of the sound insulation wall of the present invention as defined in claim 2, as shown in the cross-sectional view of the main part for explaining the sound insulation effect of FIG. 8, the sound is applied to the first hard plate member 13 from one of the walls. , The air vibrations propagate to the porous body 12,
When it is damped while passing through the inside of the porous body 12 and the damped air vibration propagates from the sound absorbing first hole 14a formed in the second hard plate member 15 on the input side to the intermediate air layer 10a, it becomes porous. Part of the air vibration is absorbed by the plate member 17 and attenuated, and is reflected by the porous plate member 17 and propagates into the porous body 12 through the first hole 14a formed in the second hard plate member 15 on the input side. Damped and another air vibration propagates to the other intermediate air layer 10a from the second air vent hole 16 formed in the porous plate member 17 directly or after repeating reflection. Further, a part of the air vibration is reflected by the second hard plate member 15 on the side opposite to the input side, propagates from the second hole 16 to the intermediate air layer 10a on the input side, and is perforated from the first hole 14a. Another air vibration propagating to the body 12 is attenuated, and another air vibration is directly or after repeating reflection, from the first hole 14a formed in the second hard plate member 15 on the side opposite to the input side, from the porous body. It enters into 12 and attenuates. Further, the vibration energy of the wall material is attenuated by elastic spacers having different natural frequencies.
These phenomena can prevent sound from propagating from one of the walls to the other.

Further, according to the structure of the sound insulation wall of the invention of claim 3, even if the pressure in the intermediate air layer increases due to the propagation of the air vibration in the intermediate air layer, the pressure release hole causes the input side to enter. Can escape to. Further, it is possible to prevent the sound from directly entering from the pressure relief hole by the silencer.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a plan view of a main part of a building, in which a sound insulating wall 4 for partitioning a passage 3 is provided between a ceiling 1 and a floor 2, and a soundproof wall 5 is provided on the opposite side of the sound insulating wall 4 from the passage 3. The partition walls 6 or the partition walls 6 form the compartments R, R. The sound insulation wall 4 is attached to each of the ceiling 1 and the floor 2 via a runner 7 and an elastic material 8 as shown in the longitudinal sectional view of the main part of FIG.

Further, the sound insulation wall 4 is composed of two wall members as shown in FIG. 3 which is a partially omitted exploded perspective view showing the first embodiment of the sound insulation wall according to the present invention, and FIG. 9 and 9 are integrally formed via elastic spacers 11 having adhesives on both sides so as to form an intermediate air layer 10 therebetween. The elastic spacer 11 is made of rubber or plastic (for example, soft polyethylene) and has a natural frequency greatly different from that of the wall material 9, for example, a diameter of 30 mm,
It is formed into a cylindrical shape with a height of 5 mm and is vertically and horizontally interposed at a pitch of 100 mm.

Each of the wall members 9 and 9 has a first hard plate member 13 attached to one side of the porous member 12 so as to sandwich the porous member 12, and a second hard plate member having sound absorbing holes 14 formed on the other side. It is configured by attaching 15. The porous body 12 has, for example, an inorganic porous structure in which shirasu is foamed. An iron powder or the like may be mixed therein to increase the weight.

The first and second hard plate members 13, 15 are
Wollastonite needle-shaped crystals are ground to form fibrous materials, rock wool, glass fibers, inorganic fibers such as metal fibers such as stainless fibers, cement paste, and a solid binder such as acrylic resin emulsion or phenol resin. Is impregnated with. The sound absorbing holes 14 ... Are dispersedly formed in the second hard plate member 15 with a diameter of 5 mm and a pitch of 100 mm vertically and horizontally, for example.

Then, in the factory, both wall materials 9, 9 are
The sound insulating wall is integrally molded by integrating the second hard plate members 15 and 15 so as to face each other through the elastic spacer 11.

FIG. 5 is a partially omitted exploded perspective view showing a second embodiment of the sound insulating wall according to the present invention, and FIG. 6 is a longitudinal sectional view of the main part. The difference from the first embodiment is as follows. . That is, between the second hard plate members 15 and 15 in which the first holes 14a for sound absorption are dispersedly formed, the porous plate member 17 in which the second holes 16 for air bleeding are dispersedly formed is interposed. The second hard plate members 15 and 15 are integrated through the same elastic spacers 11 as those in the first embodiment so that the intermediate air layer 10a is formed on each of both surface sides of the wall member 9,
9 and the porous plate material 17 are integrally molded.

As the porous plate member 17, similar to the porous body 12, for example, an inorganic porous structure in which shirasu is foamed is adopted. An iron powder or the like may be mixed therein to increase the weight.

The second holes 16 for venting air have a diameter of 10 mm and are formed vertically and horizontally at a pitch of 100 mm, for example. The elastic spacers 11 ... Are interposed vertically and horizontally at a pitch of 200 mm.

A pressure relief hole 18 is partially formed at a position close to the ceiling U of the one of the two wall members 9 on the vibration input side, and at a position facing the pressure relief hole 18, an intermediate pressure relief hole 18 is formed. A muffler 19 is provided in the air layer 10a to prevent direct sound from the vibration input side. The muffler 19 is formed by adhering a porous molded body 19b made of the same material as the porous plate material 17 to an iron plate 19a. The other structure is the same as that of the first embodiment, and the description thereof is omitted by giving the same drawing numbers.

In the above embodiment, the case where the wall for partitioning the passage 3 and the private room R side is applied to the sound insulation wall 4 has been described.
According to the present invention, for example, when a musical instrument such as a piano is placed on one side, or when audio equipment such as a speaker is placed, the sound insulation wall is configured so that the private room R side becomes the input side. Can also be applied to.

[0023]

As described above, according to the sound insulation wall of the present invention, the air vibration is first damped by one porous body, and the damped air vibration is directly absorbed by the sound absorption wall. It propagates through the hole to the other porous body, and after being reflected by the second hard plate material, propagates to one of the porous bodies through the sound absorbing hole to be attenuated, and as a whole, is attenuated in at least two stages by the porous body. In addition, the elastic spacer that integrates the facing wall materials together attenuates the vibration energy passing through this elastic spacer, so that the synergistic effect of these can significantly improve the sound insulation performance. It was

According to the sound insulation wall of the invention of claim 2, first, the air vibration is damped by one porous body, and the damped air vibration is directly passed through another sound absorbing hole through another porous body. To the body, and after being reflected by the second hard plate material, propagates to and attenuates either one of the porous bodies through the sound absorbing holes, and is attenuated in at least two stages by the porous body as a whole, and is porous. The plate material absorbs and damps air vibrations, and at the same time, it can be damped by the muffler effect as it passes through the second air vent hole formed in the porous plate material, and the wall materials facing each other are integrated. Since the elastic spacer attenuates the vibration energy passing through the elastic spacer, it is possible to significantly improve the sound insulation performance by the synergistic effect thereof.

Further, according to the sound insulation wall of the present invention as defined in claim 3, the pressure in the intermediate air layer, which has become high due to the propagation of air vibrations in the intermediate air layer, is released from the depressurization hole to the input side, and Since the sound deadening body prevents direct sound from entering due to the formation of the pressure relief hole, it is possible to suppress plate vibration of the wall material on the side opposite to the input side due to air vibration, and at the intermediate air layer. The air vibration of can be attenuated, and the sound insulation performance can be further improved.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a building.

FIG. 2 is a vertical sectional view of a main part of FIG.

FIG. 3 is a partially omitted exploded perspective view showing a first embodiment of the sound insulation wall according to the present invention.

FIG. 4 is a cross-sectional view of a main part.

FIG. 5 is a partially omitted exploded perspective view showing a second embodiment of the sound insulation wall according to the present invention.

FIG. 6 is a vertical sectional view of a main part.

FIG. 7 is a cross-sectional view of a main part for explaining a sound insulation effect.

FIG. 8 is a cross-sectional view of a main part for explaining a sound insulation effect.

[Explanation of symbols]

 4 ... Sound insulation wall 9 ... Wall material 10, 10a ... Intermediate air layer 11 ... Elastic spacer 12 ... Porous body 13 ... First hard plate material 14 ... Hole 14a ... First hole 15 ... Second hard plate material 16 ... Second Hole 17 ... Porous plate material 18 ... Pressure release hole 19 ... Silencer

Claims (3)

[Claims] 1. Two wall materials constituted by sandwiching a porous body between a first hard plate material and a second hard plate material in which sound absorbing holes are dispersedly formed, and the second hard plate materials are opposed to each other. In addition, the sound insulating wall is characterized in that it is integrated via an elastic spacer having a natural frequency greatly different from that of the wall material so as to form an intermediate air layer between the opposing second hard plate materials. 2. A wall member formed by sandwiching a porous body between a first hard plate member and a second hard plate member in which first sound absorbing holes are dispersedly formed, and a second air vent member. A porous plate member having holes dispersed therein, and facing the second hard plate member on both sides of the porous plate member,
It is characterized in that the porous plate member and the second hard plate member are integrated with each other through an elastic spacer having a natural frequency greatly different from that of the wall member so as to form an intermediate air layer between the porous plate member and the second hard plate member. Sound insulation wall. 3. A direct pressure sound from the vibration input side is formed in a portion of the wall material of claim 2 which is on the vibration input side, in which a pressure relief hole is partially formed and at a position facing the pressure relief hole. A sound insulation wall with a sound deadening element that prevents the entry of air into the middle air layer.