JPH07217017A - Soundproof material and soundproof panel - Google Patents

Abstract

PURPOSE:To exhibit high soundproof effect without increasing the weight or thickness more than it requires by arranging a plurality of soundproof members in which cavity parts continued to opening parts are tapered in such a manner that the opening parts are mutually lined up. CONSTITUTION:A cavity part 21 continued to an opening part 20 is tapered, and the inner wall forming the cavity part 21 is formed of sound absorbing materials 25, 25, and the back surface of the inner wall is formed of a soundproof material 22. The cavity part 21 is curved and extended in the right-angled direction to the opening part 20. A plurality of soundproof members 11... are arranged in such a manner that each opening part 20 is mutually lined up to constitute a soundproof panel. Further, a sound absorbing material layer 6 consisting of an air layer 7 and/or a porous material is desirably arranged on the side opposite to the opening part 20 of the sound absorbing member 11 of the soundproof panel 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof member for constructing a wall surface, a ceiling surface or a floor surface of a soundproof box such as a house, a piano practice room, an audio room and a karaoke room, and the soundproof member. It was about the soundproof panel.

[0002]

2. Description of the Related Art As conventional soundproofing materials, there are known sound absorbing materials such as porous materials such as glass wool and rock wool, plate materials such as lauan plywood, etc., and sound insulating materials such as concrete having single and double walls. ing. These conventional soundproofing materials are generally used by being formed in a layer shape or a plate shape.

Known soundproof panels include those in which a plurality of types of soundproof materials having different specific gravities are alternately stacked, and a hollow panel in which an air layer is provided between the soundproof materials. The former one, in which the soundproofing materials are superposed, is called so-called that the mass of the soundproofing material is increased to improve the soundproofing performance.
The mass law is used, and the latter hollow panel uses the distance damping law of enlarging the air layer to improve the soundproof performance.

[0004]

However, in order to improve the soundproofing effect, the conventional soundproofing material is simply formed into a layer or a plate, so that the thickness becomes unnecessarily large or the weight becomes large. I will. Further, the soundproof panel using the mass law has a large weight, and the soundproof panel using the distance attenuation law has a thick wall or the like. This is a major obstacle in the transportation and construction of soundproof materials and panels.

The present invention has been made to solve the above problems, and an object thereof is to provide a soundproof member and a soundproof panel having a high soundproof effect without increasing the weight or thickness more than necessary. I am trying.

[0006]

The invention according to claim 1 is
A soundproof member for absorbing incident sound, which has an opening, forms a tapered hollow portion connected to the opening, and forms an inner wall forming the hollow portion with a sound-absorbing material, and The feature is that the back surface is made of sound insulation material.

According to a second aspect of the present invention, in the soundproof member according to the first aspect, the hollow portion is curved and extends in a direction perpendicular to the opening.

According to a third aspect of the present invention, there is provided a soundproof panel for constructing a soundproof box, wherein a hollow portion having an opening and connected to the opening is tapered, and an inner wall forming the hollow portion is made of a sound absorbing material. And a plurality of soundproof members each having a back surface of the inner wall made of a sound insulating material are arranged so that the openings are aligned with each other.

According to a fourth aspect of the invention, in the soundproof panel according to the third aspect, the hollow portion of the soundproof member is curved and extends in a direction perpendicular to the opening.

The invention according to claim 5 is the invention according to claim 3 or 4.
In the soundproof panel described in (1), the air layer and / or the porous material layer is arranged on the side opposite to the openings of the plurality of soundproof members.

[0011]

According to the soundproof member of the first aspect, when sound enters the hollow portion through the opening, the hollow portion is formed in a tapered shape. A part of the sound absorbing material is absorbed by the sound absorbing material, and the sound that is not absorbed is reflected by the sound insulating material forming the back surface of the inner wall. This reflected sound then strikes the opposite inner wall and is likewise absorbed or reflected. In this way, the incident sound travels along a path much longer than the depth of the soundproofing member, and is repeatedly absorbed and reflected. Therefore, most of the incident sound is absorbed by the soundproofing member, and a high soundproofing effect is obtained.

According to the soundproof member of the second aspect, since the cavity is curved, no matter what incident angle the sound enters, the sound is always reflected in the cavity. Also,
Since the cavity extends in the direction perpendicular to the opening, it follows a very long path. Therefore, the sound that has entered the cavity is absorbed and reflected more times, and the soundproof effect is improved. Also, because the cavity is curved,
Even if a plurality of soundproof members are arranged side by side, the tips do not overlap each other because the depth of the arrangement may be small and the hollow portion is tapered. Can be higher.

According to the soundproof panel of the third aspect, the plurality of soundproof members are formed such that the hollow portion connected to the opening is tapered and the inner wall forming the hollow portion is made up of the soundproof member so that the openings are aligned with each other. It is installed in. Therefore, when a soundproof box is configured by this soundproof panel, when the sound emitted from the sound source enters the soundproof panel and enters the cavity of the soundproof member, the soundproof member operates in the same manner as the soundproof member according to claim 1. That is, the incident sound travels a path that is much longer than the depth of the soundproof member, and is repeatedly absorbed and reflected. As a result, most of the incident sound is absorbed by the soundproof member. Therefore, a high soundproof effect can be obtained without increasing the thickness of the soundproof panel more than necessary, and the weight of the soundproof panel does not increase more than necessary because the hollow portion fulfills its function.

According to the soundproof panel of the fourth aspect, since the hollow portion of the soundproof member is curved and extends in the direction perpendicular to the opening, the hollow portion is always irrespective of the incident angle of sound. The reflection is repeated in the section, and the soundproofing effect is improved. Also, since the cavity of the soundproof member is curved,
The depth for the arrangement may be small, even if it is curved conversely, since the hollow portion is tapered, even if a plurality of soundproof members are arranged side by side, the tips do not overlap, Therefore, the arrangement density can be increased.

According to the soundproof panel of the fifth aspect, the air layer and / or the porous material layer are arranged on the opposite side of the openings of the plurality of soundproof members, so that they do not enter the cavity of the soundproof member. Sounds that try to pass through the soundproof panel and sounds that have passed through the soundproof member are absorbed by these, so that the soundproof effect of the soundproof panel is further improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a soundproof member according to the present invention is arranged on a soundproof panel will be described in detail below with reference to the drawings.

FIG. 1 is an external perspective view of the soundproof panel 1 according to the embodiment, and FIG. 2 is a sectional view taken along the line AA of the soundproof panel 1.
In FIG. 1, the acoustic adjustment panel 3 described later is removed, and a part of the soundproof member 11 is removed. As shown in both figures, the soundproof panel 1 includes a sound adjustment panel 3 in the frame 2 in order from the front surface (sound incident side).
A soundproofing member mounting iron plate 4, a soundproofing member layer 5 composed of a plurality of soundproofing members 11, a sound absorbing material layer 6, and an air layer 7.
The back panel 8 and the back panel 8 are overlapped with each other.

The frame 2 is made of square members such as lauan plywood and MDF, and is formed in a vertically long rectangular shape. On the left and right side surfaces and the upper and lower surfaces of the framework 2, female ridges 9 to which employment ridges (not shown) are fitted are formed. That is, when the soundproof box is formed, the left and right side surfaces and the upper and lower surfaces of the soundproof panels 1, 1 ...
1 ... can be connected without gaps.

The acoustic adjustment panel 3 is provided so as to cover the entire surface of the soundproof panel 1. Depending on the purpose of the soundproof box using the soundproof panel 1, a reflection type sound adjustment panel and a weak sound absorption type sound adjustment are provided. A panel or a strong sound absorption type acoustic adjustment panel is used.

The soundproof member mounting iron plate 4 is provided on the rear surface of the acoustic adjustment panel 3, as shown in FIG. The soundproof member mounting iron plate 4 has a large number of elliptical holes 10 for mounting the soundproof member 11 of the soundproof member layer 5 on the entire panel surface.
10 ... (See FIG. 1).

The soundproof member layer 5 includes a large number of soundproof members 11, 1.
It is composed of 1 ... This soundproof member 11 is shown in FIG.
As shown in the side sectional view of FIG. 4 and the front view of FIG. 4, a main body 22 having a horn shape and forming a cavity 21 having an oval opening 20 on the front side (sound incident side). The collar portion 24 formed integrally with the main body portion 22 and having four mounting holes 23 and the cavity portion 2 attached to the inner peripheral surface of the main body portion 22.
1 and the sound absorbing material 25 forming the inner wall.
The cavity 21 is curved and extends upward or downward while tapering, and its tip is closed. The main body 22 is made of a sound insulating material and is not particularly limited, but in this embodiment, a thin iron material is used as the material. Further, the sound absorbing material 25 is not particularly limited, but in this embodiment, it is made of glass wool in which cotton-like fibers are gathered by melting glass and blowing high-pressure air or steam thereto. These soundproofing members 11, 11 ...
Is the hole 10 of the steel plate 4 for mounting the soundproof member,
10 ..., through the mounting holes 23, 23 ...
By tightening the screws into the screw holes 31, 31, ... of the soundproofing member mounting iron plate 4, the soundproofing member mounting iron plate 4 is attached to the soundproofing member mounting iron plate 4 side by side with high density.

The sound absorbing material layer 6 is made of glass wool. The sound absorbing material layer 6 has a great soundproofing effect for sounds in the middle and high range, but its thickness, density and the like are appropriately selected according to the purpose of use.

The air layer 7 is provided mainly for enhancing the soundproof effect in the middle and high frequencies, and a sound absorbing material may be inserted inside depending on the purpose of use.

The back panel 8 is composed of a particle board, a gypsum board or the like, reflects the sound in the middle and high frequencies from the back side, and is incident from the front side, and the soundproof member layer 5 and the sound absorbing layer 6 are provided. It has the function of absorbing the sound in the low frequency range that has passed through.

Next, the soundproofing operation of the soundproof panel 1 will be described.

A part of the sound incident on the soundproof panel 1 from the front side is reflected or absorbed by the acoustic adjustment panel 3,
Many sounds transmitted through the acoustic adjustment panel 3 have a large opening 20.
The light enters into the cavity 21 of each soundproof member 11 of the soundproof member layer 5 via. Most of the sound that has entered the cavity 21 is absorbed by the soundproof member 11. Specifically, since the soundproof member 11 has a unique resonance frequency, the frequency of the sound incident on the cavity 21 of the soundproof member 11 that is close to the natural resonance frequency is converted into the vibration energy of the soundproof member 11. Then, the soundproof member 11 itself is absorbed. Further, even sounds other than the natural resonance frequency are absorbed by the sound absorbing material 25 attached to the inner wall of the main body portion 22 of the soundproof member 11 or reflected by the inner peripheral surface of the main body portion 22 which is a sound insulating material. . Then, it reaches the sound absorbing material 25 on the opposite side and is absorbed there or reflected by the inner peripheral surface of the main body portion 22. In this way, the sound that has entered the cavity 21 travels a path that is much longer than the depth of the soundproof member 11, repeats the process of absorption and reflection, and finally reaches the tip of the cavity 21. Since it is absorbed by the sound absorbing material 25 attached to, most of the incident sound is absorbed by the soundproof member 11, and a high soundproof effect can be obtained.

Furthermore, since the cavity 21 of the main body 22 of the soundproof member 11 is curved and extends in the direction perpendicular to the opening 20, the sound incident on the cavity 21 from the front side has a different incident angle. Even if the angle is large, after hitting the inner peripheral surface of the main body portion 22, it reaches the absorbing material 25 which is reflected and opposed,
Therefore, the soundproofing effect is improved by repeating absorption or reflection on the inner peripheral surface of the main body portion 22. Further, in the case of simply tapering, sound may be directly input from the front side to the tip of the cavity portion 21, but since the main body portion 22 of the soundproof member 11 is curved, the sound may be stored in the main body portion 22 at least once. Reach the tip after hitting the surface. Further, the distance from the opening surface of the opening 20 of the hollow portion 21 to the tip of the hollow portion 21 is longer than the thickness of the soundproof member layer 5, so that the number of reflections is increased accordingly and the soundproof effect is improved.

Further, since the soundproof members 11 are tapered, even if they are curved, the soundproof members 11 adjacent to each other are curved.
It can be arranged on the panel surface with high density without overlapping with. Further, the gap in the soundproof member layer 5 simultaneously forms an air layer, and has the function of improving the soundproof effect of the sound that has not entered the opening 21 of the soundproof member 11.

Most of the sound transmitted through the soundproof member layer 5 is further absorbed by the sound absorbing material layer 6 and the air layer 7. That is, most of the sound transmitted through the acoustic adjustment panel 3 is absorbed by the soundproof member layer 5, or by the sound absorbing material layer 6 and the air layer 7, so that the soundproofing effect can be further improved.

As described above, according to the soundproof member 11 and the soundproof panel 1 of this embodiment, the sound of the frequency equal to the natural resonance frequency of the soundproof member 11 can be obtained without increasing the thickness of the soundproof panel more than necessary. Can be absorbed by the soundproof member 11 itself, and the sound of other low or high frequencies can be absorbed by the absorber 25 and the main body 22.
High soundproofing effect can be obtained by repeating the reflection by. That is, it is possible to obtain a soundproofing effect over a wide band.

Note that the soundproof member 11 is not limited to the shape shown in this embodiment, and a cavity may be formed in a block-shaped or panel-shaped main body as shown in FIG. 5, for example. . In addition, the opening 20 of the cavity 21
The open surface of the may be square, rectangular, rhombic, circular and polygonal. Further, the tip of the hollow portion 21 does not necessarily have to be closed. However, in order to obtain a high soundproof effect, it is preferable to close the tip of the cavity 21. In addition, the detailed configuration can be appropriately changed without departing from the spirit of the present invention.

Further, the material of the main body portion 22 of the soundproof member 11 as the sound insulating material is not limited to the iron material, and the aluminum material,
It is possible to use resin materials and wood.

[0033]

As described in detail above, according to the soundproof member of the present invention, the sound that has been incident is absorbed by the sound absorbing material that forms the cavity of the soundproof member, or the sound insulating material that constitutes the back surface of the inner wall. By repeating the process of being reflected by the sound absorbing material on the opposite side and being absorbed by the sound absorbing material on the opposite side, most of it is absorbed by the sound insulating member, and a high sound insulating effect can be obtained. Further, in the soundproof panel of the present invention, since a plurality of soundproof members having a high soundproof effect are arranged so that the openings are lined up, it is possible to obtain a high soundproof effect without increasing the weight and thickness of the soundproof panel more than necessary. You can

[Brief description of drawings]

FIG. 1 is an external perspective view of a soundproof panel to which the present invention is applied.

FIG. 2 is a sectional view taken along line AA in the soundproof panel of FIG.

FIG. 3 is a side sectional view of a soundproof member.

FIG. 4 is a front view of a soundproof member.

FIG. 5 is an external perspective view showing another embodiment of the soundproof member.

[Explanation of symbols]

 1 Soundproof Panel 5 Soundproof Member Layer 6 Sound Absorbing Material Layer 7 Air Layer 11 Soundproof Member 20 Opening 21 Cavity 22 Main Body 25 Sound Absorbing Material

Claims (5)

[Claims] 1. A soundproof member for absorbing incident sound, comprising an opening, and forming a taper of a hollow portion connected to the opening, and an inner wall forming the hollow portion being made of a sound absorbing material. A soundproof member, characterized in that the back surface of the inner wall is made of a sound insulating material. 2. The soundproof member according to claim 1, wherein the hollow portion is curved and extends in a direction perpendicular to the opening. 3. A soundproof panel for constructing a soundproof box, wherein a hollow portion having an opening and continuous to the opening is tapered, and an inner wall forming the hollow portion is made of a sound absorbing material, Further, a soundproof panel, characterized in that a plurality of soundproof members each having a back surface of the inner wall made of a sound insulating material are arranged so that the openings are aligned with each other. 4. The soundproof panel according to claim 3, wherein the hollow portion of the soundproof member is curved and extends in a direction perpendicular to the opening. 5. The soundproof panel according to claim 3, wherein an air layer and / or a porous material layer is arranged on the opposite side of the openings of the plurality of soundproof members.