JPH11336028A - Sound-absorption block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the absorbing area to improve the sound-absorbing effect by providing a body chiefly made of cement and aggregate and provided with continuous foams at the outside face and the inside of the body and parallelly forming a plurality of grooves on the surface of the body. SOLUTION: Cement, aggregate, and a foaming agent are kneaded together and placed in a square box-shaped form and then hardened while forming foams with the foaming agent to form foams 22 communicating with the outside face 18 and the inside 20 of the body 4. A plurality of grooves 24 are formed on the surface 6 of the body 4 so as to vertically extend in parallel with both side faces 10, 12. Accordingly, a plurality of grooves 24 and protrusion lines 26 between the grooves 24 are alternately formed on the surface 6. In this way, noise can be absorbed by the foams 22 closed in the inside of body 4 and exposed on the surface and further, the absorbing area for noise can be increased by a plurality of grooves 24 formed on the surface 6 of the body 4 and also the shape is varied to call one's attention.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing block, and more particularly to a sound absorbing block capable of improving a sound absorbing effect and improving appearance.

[0002]

2. Description of the Related Art In a living environment, soundproofing measures are taken in order to prevent noises such as a running noise of a vehicle on a highway, a construction sound at a construction site, and a machine noise at a factory. For soundproofing,
In order to absorb generated noise and prevent transmission of noise to the outside, there is a type in which a soundproof wall is constructed by a sound absorbing material.

As such a sound absorbing material, for example, a sound absorbing material formed of glass wool, or a water-absorbing sheet or a perforated metal plate is adhered to the surface of the sound absorbing material to prevent dirt or waterproof. Further, as disclosed in Utility Model Registration No. 3018899, there is a concrete plate in which a sound absorbing block having concrete as a main component and having open cells inside and outside is bonded to one side of a concrete plate.

[0004]

However, the conventional sound absorbing material made of glass wool is liable to be contaminated by exhaust gas or oil adhered to its surface, and has a disadvantage that its appearance is deteriorated.

To cope with such inconveniences, there is a sound absorbing material made of glass wool which is provided with a water-repellent sheet on the surface to impart waterproofness, but has a disadvantage of increasing the cost.

[0006] As disclosed in Utility Model Registration No. 3018899, a concrete plate having a sound absorbing block having concrete as a main component and open cells inside and outside connected to one side of a concrete plate is a sound absorbing block by the open cells of the sound absorbing block. It is soundproofing by the effect and the sound insulation effect of the concrete plate, but the surface of the sound absorption block is formed in a flat surface shape, so the noise absorption area is limited to the surface area, and the sound absorption effect is increased In addition, there is an inconvenience that the appearance of the vehicle becomes inorganic and the driver's attention is lowered because the shape cannot be changed easily.

[0007]

SUMMARY OF THE INVENTION In order to solve such inconveniences, the present invention provides a main body in which cement and aggregate are the main components and continuous air bubbles are formed on the outer surface and the inner side. A plurality of grooves are formed in parallel on the surface.

The sound absorbing block is characterized in that the sound absorbing block is provided by forming bubbles so that the density is higher on the back side than on the front side, and a net-like member is provided inside the main body.

In the sound absorbing block, the back surface of the main body is fixed to a fixing surface of a frame mainly composed of cement and aggregate to form a soundproof wall plate, and the sound absorbing block is fixed to the back surface of the main body. A locking hook portion locked to the locking recess provided on the surface, a sparse surface portion fixed to the fixing surface of the frame body on the back surface of the main body,
A corrugated portion fixed to the fixing surface of the frame is provided on the back surface of the main body.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A sound absorbing block according to the present invention is provided with a plurality of grooves formed in parallel on the surface of a main body mainly composed of cement and aggregate and formed with continuous bubbles inside and outside. By this, noise can be absorbed by bubbles that are included and exposed in the main body, and the noise absorption area can be increased by a plurality of grooves formed parallel to the surface of the main body, and the shape can be increased. Can be changed to give the attention of the viewer.

The sound absorbing block is provided by forming bubbles so that the density is higher on the back side than on the front side of the main body. In addition, noise can be prevented and the strength can be ensured by the back surface having a large density. Further, the sound absorbing block is provided with a mesh member inside the main body,
The strength can be increased without impairing the shape of the internal bubbles that absorb noise.

Further, the sound absorbing block has a back surface of a main body fixed to a fixing surface of a frame mainly composed of cement and aggregate to form a soundproof wall plate, so that a soundproof block surrounding a noise generation source is provided. Can be used as a wall. In this case,
The sound-absorbing block is provided on a back surface of the main body with a locking hook portion locked on a locking recess provided on a fixing surface of the frame body, and a sparse surface portion fixed on the fixing surface of the frame body on the back surface of the main body. Alternatively, by providing a corrugated portion fixed to the fixing surface of the frame on the back surface of the main body, the sound absorbing block can be firmly fixed to the frame and the sound absorbing block can be protected from external pressure.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of the present invention. 1 to 6, reference numeral 2 denotes a sound absorbing block, and reference numeral 4 denotes a main body. The sound absorbing block 2 is, as shown in FIGS.
Front surface 6, back surface 8, both side surfaces 10, 12 and upper and lower surfaces 14, 16
And a vertically long rectangular plate-shaped main body 4 having:

The main body 4 is prepared by kneading cement, aggregate, water, and a foaming agent (not shown), pours the mixture into a rectangular box-shaped mold (not shown), and solidifies while forming bubbles with the foaming agent. As shown in FIG. 1 and FIG. 2, a continuous bubble 22 is formed on the outer surface 18 and the inner portion 20 with the cement and the aggregate as main components.

A plurality of grooves 2 are provided on the surface 6 of the main body 4.
4 is formed so as to be vertically oriented in parallel with both side surfaces 10 and 12. Therefore, on the surface 6 of the main body 4,
A plurality of grooves 24 and ridges 26 between the grooves 24 are formed alternately.

As described above, in the sound absorbing block 2, a plurality of grooves 24 are formed in parallel with the surface 6 of the main body 4 having the cement and the aggregate as the main components and the air bubbles 22 connected to the outer surface 18 and the inner portion 20. It is formed and provided.

Thus, the sound absorbing block 2 can absorb noise by the bubbles 22 which are contained and exposed in the main body 4, and furthermore, the noise can be reduced by the plurality of grooves 24 formed on the surface 6 of the main body 4. Can be increased and the shape can be changed to draw attention to the viewer.

For this reason, the sound absorbing block 2 is
In addition to being able to absorb noise by the air bubbles 22 provided in the main body 4, the groove 24 formed on the surface 6 of the main body 4 can increase the noise absorption area, so that the sound absorbing effect can be improved. By being able to call attention to what is seen, for example, when used for the soundproof wall 32 (see FIG. 16) on an expressway, it is possible to avoid a decrease in the driver's attention and to contribute to an improvement in safety.

The sound absorbing block 2 shown in FIGS.
In FIG. 7, the air bubbles 22 are uniformly formed on the main body 4.
As shown in the figure, the air bubbles 22 may be formed and provided so that the density on the back surface 8 side is higher than that on the front surface 6 side of the main body 4.

As described above, the sound absorbing block 2 formed by forming the bubbles 22 so that the density on the back surface 8 side is higher than that on the front surface 6 side of the main body 4 has a lower density than the back surface 8 side. While the noise is absorbed by the front surface 6 side which has a small amount of concrete and has many air bubbles 22, the density of the surface 6 side is large and the back surface 8 side which has a large amount of concrete and a small amount of air bubbles 22 reduces noise interference and strength. We can fulfill security.

As shown in FIG. 8, the sound absorbing block 2 is provided with a mesh member 28 made of metal or synthetic fiber in the inside 20 of the main body 4 so as to absorb noise.
The strength can be increased without impairing the shape of the zero bubble 22 and, therefore, without impairing noise absorption.

Further, the sound absorbing block 2 shown in FIGS.
Is formed by forming the groove 24 so as to be directed in the vertical direction in parallel with both side surfaces 10 and 12, but as shown in FIGS.
The groove 24 may be formed so as to be directed in the horizontal direction.

That is, the sound absorbing block 2 shown in FIGS.
Are the front surface 6, back surface 8, both side surfaces 10 and 12, upper and lower surfaces 14
16 and a vertically long rectangular plate-shaped main body 4 is provided, similar to the sound absorbing block 2 shown in FIGS. Bubbles 22 are formed and provided.

The surface 6 of the main body 4 has a plurality of grooves 2
4 is formed so as to be oriented in the horizontal direction in parallel with the upper and lower surfaces 14 and 16. Therefore, on the surface 6 of the main body 4,
A plurality of grooves 24 and ridges 26 between the grooves 24 are formed alternately.

As a result, the sound absorbing block 2 shown in FIGS. 9 to 11 absorbs noise by the bubbles 10 which are contained in the main body 4 and are exposed similarly to the sound absorbing block 2 shown in FIGS. And the surface 1 of the body 4
The noise absorbing area can be increased by the plurality of grooves 24 formed in parallel to the two.

For this reason, the sound absorbing block 2 shown in FIGS. 9 to 11 can not only absorb the noise by the air bubbles 22 provided in the main body 4 but also by the groove 24 formed on the surface 6 of the main body 4. The sound absorbing effect can be improved by increasing the absorption area of the.

As shown in FIGS. 12 to 16, the sound absorbing block 2 can form a soundproof wall 32 by forming a soundproof wall plate 30.

As shown in FIGS. 12 and 13, the soundproof wall plate 30 has a surface 3 of a horizontally long rectangular plate-shaped frame member 36 which is mainly composed of cement and aggregate and reinforced by a reinforcing bar 34.
8, two recesses 40 oriented in the horizontal direction are provided in parallel,
A fixing surface 42 for fixing the sound absorbing block 2 in the recess 40.
Is provided.

As shown in FIGS. 14 and 15, the back surface 8 of the main body 4 of the sound absorbing block 2 is fixed to the fixing surface 42 of the concave portion 40 of the frame body 36 with a cement-based adhesive (for example, mortar or the like). Thereby, the soundproof wall plate 30 is formed.

The soundproof wall plate 30 is shown in FIGS.
The sound absorbing block 2 formed by directing the groove 24 shown in FIG. 9 in the vertical direction and the sound absorbing block 2 formed by directing the groove 24 shown in FIGS. It is fixedly provided on the fixing surface 42 of the concave portion 40 of the body 36.

When constructing the soundproof wall 32, FIG.
As shown in FIG. 3, supporting columns 46 having an H-shaped cross section are erected on the ground 44 at equal intervals, and the supporting grooves 48, 48 of the two supporting columns 46, 46 facing each other are arranged in the longitudinal direction of the soundproof wall plate 30. The side edges 50 are engaged and supported, and the soundproof wall boards 30 are sequentially laminated until the working height is reached, thereby constructing the soundproof wall 32.

The sound-insulating wall plate 30 is supported by the support columns 46 such that the surface 6 of the sound-absorbing block 2 fixed to the frame 36 faces the noise source.

As described above, the sound absorbing block 2 has a structure in which the back surface 8 of the main body 4 is formed of a frame 36 mainly composed of cement and aggregate.
By forming the soundproof wall plate 30 by being fixed to the fixing surface 42 of the concave portion 40, the soundproof wall 32 surrounding the noise generation source can be used.

The sound-absorbing block 2 can be changed in shape by a plurality of grooves 24 formed in parallel with the surface 6 of the main body 4 so that the sound-absorbing block 2 can attract attention, but can attract attention. In this case, it is possible to avoid a decrease in the driver's attention and to contribute to an improvement in safety.

As shown in FIG. 17, the sound absorbing block 2 has a locking hook 54 which is locked on a locking recess 52 provided on the fixing surface 42 of the frame 36 on the back surface 8 of the main body 4. Thus, the sound absorbing block 2 can be firmly fixed to the frame body 36 by the locking force, and the sound absorbing block 2 can be protected from external pressure.

Further, as shown in FIG. 18, the sound absorbing block 2 is provided with a sparse surface portion 56 fixed to the fixing surface 42 of the frame 36 on the back surface 8 of the main body 4, thereby increasing the fixing force and increasing the frame strength. 36 and can be firmly fixed.
The sound absorbing block 2 can be protected from external pressure.

Further, as shown in FIG. 19, the sound absorbing block 2 is provided with a corrugated portion 58 fixed to the fixing surface 42 of the frame 36 on the back surface 8 of the main body 4, thereby increasing the fixing force and increasing the frame 36, and the sound absorbing block 2 can be protected from external pressure.

[0038]

As described above, the sound-absorbing block of the present invention can absorb noise by air bubbles contained in and exposed to the main body, and furthermore, by a plurality of grooves formed in parallel with the surface of the main body. The noise absorption area can be increased, and the shape can be changed to call attention to the viewer.

For this reason, the sound absorbing block can not only absorb the noise by the air bubbles provided in the main body, but also can increase the absorption area by the groove formed on the surface of the main body, so that the sound absorbing effect can be improved. In addition to being able to improve, and being able to call attention to what is seen, when used for a soundproof wall on a highway, for example, it is possible to avoid a decrease in the driver's attention and contribute to improvement in safety.

[Brief description of the drawings]

FIG. 1 is an enlarged plan view of a main part of a sound absorbing block according to an embodiment of the present invention, which is partially cut away.

FIG. 2 is an enlarged front view of a main part of the sound absorbing block.

FIG. 3 is a plan view of the sound absorbing block.

FIG. 4 is a front view of the sound absorbing block.

FIG. 5 is a rear view of the sound absorbing block.

FIG. 6 is a side view of the sound absorbing block.

FIG. 7 is a cross-sectional view of the sound absorbing block in which the density is changed between the front side and the back side of the main body.

FIG. 8 is a cross-sectional view of a sound absorbing block in which a net member is provided inside a main body.

FIG. 9 is a plan view of a sound-absorbing block in which a horizontally oriented groove is formed.

FIG. 10 is a front view of a sound-absorbing block having a groove oriented in a horizontal direction.

FIG. 11 is a side view of a sound-absorbing block having a groove oriented in the horizontal direction.

FIG. 12 is a front view of a frame to which the sound absorbing block is fixed.

FIG. 13 is an enlarged sectional view taken along line XIII-XIII in FIG. 12;

FIG. 14 is a front view of the soundproof wall plate.

FIG. 15 is an enlarged sectional view taken along line XV-XV in FIG. 14;

FIG. 16 is a perspective view illustrating the construction of a soundproof wall.

FIG. 17 is a side view of a sound absorbing block provided with a hook on the back surface of the main body.

FIG. 18 is a side view of a sound absorbing block provided with a sparse surface portion on the back surface of the main body.

FIG. 19 is a side view of the sound absorbing block provided with a corrugated portion on the back surface of the main body.

[Explanation of symbols]

 Reference Signs List 2 sound absorbing block 4 main body 6 front surface 8 back surface 10 side surface 12 side surface 14 upper surface 16 lower surface 22 air bubble 24 groove 26 ridge

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[Procedure amendment]

[Submission date] June 24, 1998

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 3

FIG. 9

FIG.

FIG. 2

FIG. 4

FIG. 5

FIG. 6

FIG. 7

FIG. 8

FIG. 10

FIG. 11

FIG.

FIG. 13

FIG. 14

FIG.

FIG. 16

FIG.

FIG.

FIG.

Claims (7)

[Claims] The present invention is characterized in that a body having continuous bubbles formed on an outer surface and an inner surface of a cement and an aggregate as main components is provided, and a plurality of grooves are formed on a surface of the body in parallel. Sound absorbing block. 2. The sound-absorbing block according to claim 1, wherein the sound-absorbing block is formed by forming bubbles so that the density is higher on the back side than on the front side of the main body. 3. The sound absorbing block according to claim 1, wherein the sound absorbing block has a mesh member provided inside a main body. 4. The sound-absorbing block according to claim 1, wherein a back surface of the main body is fixed to a fixing surface of a frame mainly composed of cement and aggregate to form a soundproof wall plate. Sound absorbing block. 5. The sound absorbing block according to claim 4, wherein a locking hook portion is provided on a back surface of the main body, the locking hook portion being locked in a locking recess provided in a fixing surface of the frame. Sound absorbing block. 6. The sound absorbing block according to claim 4, wherein the sound absorbing block has a sparse surface portion fixed to a fixing surface of the frame body on a back surface of the main body. 7. The sound absorbing block according to claim 4, wherein the sound absorbing block has a corrugated portion fixed to a fixing surface of the frame on a back surface of the main body.