JP7014683B2 - Soundproof unit - Google Patents

Description

The present invention relates to a soundproof unit that is arranged at the upper end of a wall-like body such as a soundproof wall to reduce noise generated from noise sources such as a railroad on which a train travels, a roadway on which an automobile travels, and a runway on which an aircraft takes off and land. It is a thing.

A soundproof unit that is placed at the upper end of a soundproof wall or the like to reduce noise has been conventionally used, and various configurations have been proposed. For example, in Patent Document 1, a first branch wall inclined toward the sound source side and a second branch wall inclined toward the anti-sound source side form a side V-shaped main body portion, and the tip of the first branch wall is formed. A first tip wall inclined to the anti-sound source side is formed, and a second tip wall inclined to the sound source side is formed at the tip of the second branch wall, and the distance between the first and second tip walls is formed. Disclosed is a soundproofing device installed on the upper part of a soundproofing wall main body, characterized in that the distance between the first and second branch walls is 55 to 88%.

Japanese Unexamined Patent Publication No. 11-286910

The soundproofing device shown in Patent Document 1 is provided with tip walls at the tips of a first branch wall and a second branch wall provided in a V-shape on the side surface, thereby performing sound insulation and sound reduction by a diffraction effect. However, the present invention provides a soundproofing unit that effectively reduces noise and the like by a configuration different from the above.

In order to achieve the above object, the present invention has the following configuration.
That is, the soundproof unit according to the present invention is a soundproof unit arranged at the upper end of the soundproof wall.
An inclined plate portion having an anterior inclined plate and a posterior inclined plate protruding in an inclined manner toward the upper side of the front side and the upper side of the rear side, which are the sound source side, respectively.
It is equipped with a sound insulation plate unit having a front side sound insulation plate and a rear side sound insulation plate arranged at intervals in the front and rear.
The front inclined plate and the rear inclined plate of the inclined plate portion are arranged in a substantially V shape in which the lower part is connected.
The front side sound insulating plate and the rear side sound insulating plate of the sound insulating plate portion are connected to the lower portion and the upper portion is connected to the inclined plate portion, respectively, and the sound insulating plate portion and the inclined plate portion form a cylindrical wall. It is characterized in that it is provided so as to be configured.

According to the soundproofing unit according to the present invention, the soundproofing unit is provided with an inclined plate portion having an anterior inclined plate and a posterior inclined plate that project in an inclined manner toward the upper side of the front side and the upper side of the rear side, which are the sound source sides, respectively, and the lower part of each inclined plate. Because the noise from the sound source side is blocked by the front inclined plate and is insulated, the noise diffracted at the tip position enters between the front inclined plate and the rear inclined plate. It is attenuated in this way.
Further, since the sound insulation plate portion in which the front side sound insulation plate and the rear side sound insulation plate are arranged at intervals in the front-rear direction is provided, the noise from the sound source can be effectively insulated by the two sound insulation plates.
Further, since the lower part of each sound insulating plate is connected and the upper part is connected to the inclined plate portion, the sound insulating plate portion and the inclined plate portion are provided so as to form a cylindrical wall of the cylindrical body. The rigidity of the plate is improved, and the sound insulation effect in the sound insulation plate portion is improved.

Further, if side plates are arranged on both sides in the left-right direction and the front sound insulation plate and the rear sound insulation plate of the sound insulation plate portion are fixed to the respective side plates, the rigidity of each sound insulation plate is further improved and the sound insulation plate is further improved. This is preferable because the sound insulation effect in the section is improved.

Further, it is preferable to store the sound absorbing material inside the tubular body because the noise passing through the sound insulating plate portion is attenuated by the sound absorbing material.

Further, if a rib portion projecting to either the front or the rear is formed on either the front side sound insulation plate or the rear side sound insulation plate, the rigidity of the sound insulation plate on which the rib portion is formed is improved, and the sound insulation effect is improved. Therefore, it is preferable.

Further, if the front cover portion is arranged in front of the sound insulating plate portion and the sound absorbing material is arranged between the front cover portion and the front sound insulating plate, the noise passing through the front cover portion is attenuated by the sound absorbing material. This is preferable because the noise passing through the sound insulating plate portion is effectively attenuated.

Further, if the upper cover portion is arranged above the inclined plate portion and the sound absorbing material is arranged between the upper cover portion and the inclined plate portion, the noise diffracted at the position of the tip of the front inclined plate portion is said to be. It is preferable because it passes through the upper cover portion and is attenuated by the sound absorbing material.

According to the soundproofing unit according to the present invention, the noise passing above can be diffracted and attenuated by the inclined plate portion, and the noise passing through can be effectively increased by increasing the rigidity of each soundproofing plate portion of the soundproofing plate portion arranged below the diffracted plate portion. Can be attenuated.

It is a front view which shows one Embodiment of the soundproofing unit which concerns on this invention. It is a plan view of FIG. It is a right side view of FIG. It is a rear view of FIG. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is sectional drawing which shows the other embodiment of the soundproofing unit which concerns on this invention. It is sectional drawing which shows the other embodiment of the soundproofing unit which concerns on this invention.

Embodiments of the invention will be specifically described with reference to the drawings.
1 is a front view showing an embodiment of the soundproofing unit 1 according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a right side view of FIG. 1, and FIG. 4 is FIG. It is a rear view of FIG. 5, and FIG. 5 is a sectional view taken along the line AA of FIG.
In FIG. 2, the vertical direction in the figure is the front-back direction, and the left-right direction in the figure is the left-right direction.
The soundproofing unit 1 shown in FIG. 1 is formed in a substantially rectangular box-shaped outer shape.
Specifically, the soundproofing unit 1 has a front surface composed of a front cover portion 61, a rear surface composed of a rear sound insulating plate 22, an upper surface composed of an upper cover portion 62, and a lower surface composed of a lower plate 9. The left and right side surfaces are composed of side plates 8.
The front cover portion 61 and the upper cover portion 62 are formed with a large number of through holes for passing noise to the inside of the soundproof unit 1 over substantially the entire surface.
Further, each side plate 8 is provided with a mounting portion 81 projecting to the outside side, and each mounting portion 81 is fitted into the inside of the groove provided in the strut, and the strut space is erected at intervals. It is installed so that it can be installed in.

The soundproofing unit 1 shown in FIG. 1 has substantially the same vertical cross section between the side plates 8 arranged on the left and right sides over the entire length in the left and right direction.
A front soundproof plate 21 is housed and attached to the inside of the soundproof unit 1.
The front sound insulation plate 21 is arranged in front of the rear sound insulation plate 22 at intervals, the lower end thereof is connected to and fixed to the lower plate 9, and the side ends on both the left and right sides are connected to the side plates 8. Each is connected and fixed.
Further, the left and right side ends of the rear sound insulating plate 22 are located laterally outward from each side plate 8, and the plate surface is connected to and fixed to each side plate 8.
By providing the sound insulation plate portion 2 in which the front side sound insulation plate 21 and the rear side sound insulation plate 22 are arranged in the front-rear direction, the noise passing through the sound insulation plate portion 2 can be effectively reduced.

The front sound insulating plate 21 is formed with a rib portion 21a projecting forward over the entire length in the left-right direction.
The rib portion 21a is formed by bending the front sound insulating plate 21, and two rib portions 21a are formed with an interval in the vertical direction.
By forming each of the rib portions 21a, the rigidity of the front sound insulating plate 21 is improved, and the sound insulating effect thereof is enhanced.

Inside the soundproofing unit 1, a front inclined plate 31 and a rear inclined plate 32 are housed and attached.
The upper end of the front inclined plate 31 is arranged at the corner of the soundproof unit 1 to which the front cover portion 61 and the upper cover portion 62 are connected, and the lower end thereof is connected to the upper part of the front sound insulating plate 21 to connect the front end to the front side. The sound insulation plate 21 is provided so as to project in an inclined manner from the upper end to the upper front side.
The front inclined plate 31 and the front sound insulating plate 21 are formed of one plate body, and the upper portion of the plate body constituting the front sound insulating plate 21 is bent to form the front inclined plate 31.

The upper end of the rear inclined plate 32 is arranged at the corner of the soundproof unit 1 to which the rear sound insulating plate 22 and the upper cover portion 62 are connected, and the lower end thereof is connected to the lower part of the front inclined plate 31. , It is provided so as to project in an inclined manner from the lower part of the front side inclined plate 31 to the upper part of the rear side.
As shown in FIG. 5, the front inclined plate 31 and the rear inclined plate 32 are provided so as to form an inclined plate portion 3 having a substantially V-shaped side view.

The soundproofing unit 1 houses the sound absorbing material S inside.
Specifically, the sound absorbing material S1 is arranged and stored between the front cover portion 61 and the front sound insulating plate 21, and the spacer K1 is arranged between the sound absorbing material S1 and the front sound insulating plate 21. , A gap is provided between the front sound insulating plate 21 and the sound absorbing material S1.
Further, the sound absorbing material S3 is arranged and stored between the front sound insulating plate 21 and the rear sound insulating plate 22, and the spacer K3 is arranged between the sound absorbing material S3 and the front sound insulating plate 21 to arrange the spacer K3 on the front side. A gap is provided between the sound insulating plate 21 and the sound absorbing material S3.
Further, the sound absorbing material S2 is arranged and stored between the inclined plate portion 3 composed of the front inclined plate 31 and the rear inclined plate 32 and the upper cover portion 62.
As each of the sound absorbing materials S1, S2, and S3, a sound absorbing material of a known material such as glass wool or a cotton-like body of synthetic resin fiber can be used.

The soundproofing unit 1 is provided so as to effectively attenuate the noise from the sound source in front.
Specifically, the noise from the sound source passes through the front cover portion 61 and enters the inside, is reduced by the sound absorbing material S1, and is attenuated by being insulated by the front sound insulating plate 21 and the front inclined plate 31. It is provided.
Further, since the soundproofing unit 1 is provided with a soundproofing plate portion 2 in which the rear side soundproofing plate 22 is arranged behind the front side soundproofing plate 21, the noise passing through the front side soundproofing plate 21 is reduced by the sound absorbing material S3. At the same time, the sound insulation plate 22 on the rear side can further insulate and attenuate the sound.

Further, when the noise from the sound source in front passes above the soundproofing unit 1, the soundproofing unit 1 is diffracted at the corner portion of the soundproofing unit 1 where the upper end of the front inclined plate 31 is located, and passes through the upper cover portion 62. It is provided so as to enter between the inclined plates 31 and 32 and diffract. Further, the noise that has passed through the upper cover portion 62 can be attenuated by the sound absorbing material S2.

The front side sound insulating plate 21 and the rear side sound insulating plate 22 constituting the sound insulating plate portion 2 are connected to the front inclined plate 31 and the rear inclined plate 32 of the inclined plate portion 3 at the upper ends thereof, and the lower ends thereof are the lower plate 9. Is connected to.
In other words, the front side sound insulating plate 21, the rear side sound insulating plate 22, the front side inclined plate 31, the rear side inclined plate 32, and the lower plate 9 are connected to each other by connecting their respective ends to form a cylindrical wall. Is provided so as to constitute. By providing the sound insulating plate portion 2 and the inclined plate portion 3 in this way, the rigidity of each of the sound insulating plates 21 and 22 and the rear inclined plate 32 is improved, and the sound insulating effect thereof is enhanced.

The soundproofing unit 1 shown in FIG. 1 is a combination of a soundproofing plate portion 2 which is arranged so as to form a tubular wall of a cylindrical body to improve the soundproofing effect, and an inclined plate portion 3 which can effectively attenuate diffracted sound. As a result, a high soundproofing effect can be obtained, so that the size of the soundproofing unit 1 can be designed to be smaller. Specifically, since the size of the thickness in the front-rear direction can be made smaller, it is possible to make the protrusion to the front sound source side smaller in the state where the soundproofing unit 1 is installed. By providing the soundproofing unit 1 in this way, for example, when the soundproofing unit 1 is installed on the side of the road, it is less likely that a vehicle or the like will come into contact with the soundproofing unit 1 protruding from the sound source side and damage it. Therefore, it is preferable.
Further, since the soundproofing unit 1 can obtain a high noise attenuation effect by the sound absorbing materials S1, S2, and S3 arranged inside the soundproofing unit 1, the size of the soundproofing unit 1 can be made smaller.

FIG. 6 is a cross-sectional view showing another embodiment of the soundproofing unit 1 according to the present invention.
In the soundproofing unit 1 shown in FIG. 6, the rear side soundproofing plate 22 constituting the soundproofing plate portion 2 is housed inside the soundproofing unit 1, and the rear surface of the soundproofing unit is composed of the rear side cover portion 63. The main point different from the soundproofing unit 1 shown in FIG. 1 is that the sound absorbing material S4 is arranged between the portion 63 and the rear soundproofing plate 22.
That is, the soundproofing unit 1 shown in FIG. 6 is formed in a substantially rectangular box-shaped outer shape like the soundproofing unit 1 shown in FIG. 1, with a front cover portion 61 on the front surface, an upper cover portion 62 on the upper surface, and an upper cover portion 62 on the lower surface. The lower plate 9 and the side plates 8 are provided on the left and right side surfaces, and a large number of through holes for passing noise to the inside of the soundproof unit 1 are formed in the front cover portion 61 and the upper cover portion 62 over substantially the entire surface. is doing.
Further, each side plate 8 is provided with a mounting portion 81 for fitting into the groove provided in the support column.

As shown in FIG. 6, a front side sound insulating plate 21 is arranged inside the soundproofing unit 1, and a sound absorbing material S1 is arranged and stored between the front side sound insulating plate 21 and the front side cover portion 61.
Further, inside the soundproofing unit 1, an inclined plate portion 3 in which the front inclined plate 31 and the rear inclined plate 32 are arranged in a substantially V shape is provided, and between the inclined plate portion 3 and the upper cover portion 32. The sound absorbing material S2 is arranged and stored in the space.

The rear sound insulation plate 22 of the soundproof unit 1 shown in FIG. 6 is arranged between the front sound insulation plate 21 and the rear cover portion 63, and the lower end thereof is connected to and fixed to the lower plate 9, and the upper end thereof is fixed. It is connected to and fixed to the lower surface of the rear inclined plate 32.
The front side sound insulation plate 21 and the rear side sound insulation plate 22 are fixed by connecting the side ends on both the left and right sides to the side plate 8 respectively.
Further, a sound absorbing material S3 is arranged and stored between the front sound insulating plate 21 and the rear sound insulating plate 22.
By arranging the front side sound insulation plate 21 and the rear side sound insulation plate 22 at intervals in this way, the noise passing through the front side sound insulation plate 21 is reduced by the sound absorbing material S3 as in the soundproof unit 1 shown in FIG. The sound can be further insulated and attenuated by the rear sound insulating plate 22. The noise that has passed through the rear sound insulating plate 22 is further attenuated by the sound absorbing material S4 arranged behind the noise absorbing plate 22.
Further, since the front side sound insulation plate 21, the rear side sound insulation plate 22, the rear side inclined plate 32, and the lower plate 9 are connected to form a cylindrical wall, each sound insulation plate 21 is provided. , 22 and the rear inclined plate 32 are improved in rigidity, and the sound insulation effect thereof is enhanced.

Like the front cover portion 61 and the upper cover portion 62, the rear cover portion 63 has a large number of through holes formed over substantially the entire surface, and is provided so as to allow noise to pass inside the soundproof unit 1. ..
When the noise from the front exceeds the upper part of the soundproofing unit 1, the soundproofing unit 1 is diffracted at the corner of the soundproofing unit 1 where the upper end of the rear inclined plate 32 is located, passes through the rear cover portion 63, and passes through the rear cover portion 63 to pass through the sound absorbing material S4. It is provided so as to be attenuated by.
As shown in FIG. 6, a spacer K4 is arranged between the sound absorbing material S4 and the rear sound insulating plate 22 so as to form a gap.

FIG. 7 is a cross-sectional view showing another embodiment of the soundproofing unit 1 according to the present invention.
The soundproofing unit 1 shown in FIG. 7 is different from the soundproofing unit 1 shown in FIG. 6 only in that the intermediate plate 33 is arranged between the front inclined plate 31 and the rear inclined plate 32.
Specifically, the intermediate plate 33 is arranged so that the plate surface faces in the vertical direction, and the lower end of the front inclined plate 31 and the lower end of the rear inclined plate 32 are connected to and connected to the intermediate plate 33, respectively. ing. In other words, the soundproofing unit 1 shown in FIG. 7 is formed by connecting the front inclined plate 31, the intermediate plate 33, and the rear inclined plate 32 to form an inclined plate portion 3 having a substantially V-shaped side view. ..

Further, the soundproofing unit 1 shown in FIG. 7 has a tubular shape by connecting the front side soundproofing plate 21 constituting the soundproofing plate portion 2, the rear side soundproofing plate 22, the intermediate plate 33 constituting the inclined plate portion 3, and the lower plate 9. It is provided so as to form a cylindrical wall of the body, and the rigidity of each of the sound insulation plates 21 and 22 is increased to improve the sound insulation effect.

The soundproofing unit 1 according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.
For example, in each of the soundproofing units 1 shown in FIGS. 1, 6 and 7, the rib portion 21a formed on the front soundproofing plate 21 is formed over the entire length of the front soundproofing plate 21 in the left-right direction, but the present invention is limited to this. It may be formed only partially, not a thing. Further, the cross-sectional shape of the rib portion 21a, the projecting direction, and the like may be changed to another form capable of improving the rigidity of the front sound insulating plate 21.
Further, although the rib portion 21a is formed on the front side sound insulation plate 21 constituting the sound insulation plate portion 2, the front side sound insulation plate 21 may be provided in a flat plate shape without forming the rib portion 21a, and the rib portion 21 may be provided on the rear side sound insulation plate 22. A portion may be formed.

Further, in each of the soundproofing units 1, the sound absorbing material S1 is arranged between the front cover portion 61 and the front sound insulating plate 21, but the present invention is not limited to this, and the sound absorbing material S1 may not be arranged. The front cover portion 61 may not be provided.
Further, in each of the soundproofing units 1, the sound absorbing material S2 is arranged between the upper cover portion 62 and the inclined plate portion 3, but the present invention is not limited to this, and the sound absorbing material S2 may not be arranged. The upper cover portion 62 may not be provided.
Further, in each of the soundproofing units 1, the sound absorbing material S3 is arranged between the front side sound insulating plate 21 and the rear side sound insulating plate 22, but the present invention is not limited to this, and the sound absorbing material S3 may not be arranged. ..

Further, in each of the soundproofing units 1, the front cover portion 61, the upper cover portion 62, and the rear cover portion 63 are formed of a so-called punching plate provided with a large number of through holes on the entire surface, but the present invention is limited to this. It may be formed of another member such as a plate body provided with a slit or a net-like body through which sound can easily pass.

1 Sound insulation unit 2 Sound insulation plate 21 Front sound insulation plate 22 Rear sound insulation plate 3 Inclined plate 31 Front sound insulation plate 32 Rear sound insulation plate 33 Intermediate plate 61 Front cover 62 Upper cover 63 Rear cover 8 Side plate 81 Mounting Part 9 lower plate

Claims (6)

A soundproof unit placed at the top of a soundproof wall,
An inclined plate portion having an anterior inclined plate and a posterior inclined plate protruding in an inclined manner toward the upper side of the front side and the upper side of the rear side, which are the sound source side, respectively.
It is equipped with a sound insulation plate unit having a front side sound insulation plate and a rear side sound insulation plate arranged at intervals in the front and rear.
The front inclined plate and the rear inclined plate of the inclined plate portion are arranged in a substantially V shape in which the lower part is connected.
The front side sound insulation plate and the rear side sound insulation plate of the sound insulation plate portion are connected to the lower portion and the upper portion is connected to the inclined plate portion, respectively, and the sound insulation plate portion and the inclined plate portion form a cylindrical wall. A soundproof unit characterized by being provided so as to be configured. The soundproofing unit according to claim 1, wherein side plates are arranged on both sides in the left-right direction, and the front side sound insulation plate and the rear side sound insulation plate of the sound insulation plate portion are fixed to each side plate, respectively. The soundproofing unit according to claim 1 or 2, wherein the sound absorbing material is housed inside the tubular body. The soundproofing unit according to any one of claims 1 to 3, wherein a rib portion projecting to either the front side or the rear side is formed on either the front side sound insulation plate or the rear side sound insulation plate. A front cover portion arranged in front of the sound insulation plate portion is provided.
The soundproofing unit according to any one of claims 1 to 4, wherein a sound absorbing material is arranged between the front cover portion and the front sound insulating plate. The upper cover portion arranged above the inclined plate portion is provided, and the upper cover portion is provided.
The soundproofing unit according to any one of claims 1 to 5, wherein a sound absorbing material is arranged between the upper cover portion and the inclined plate portion.

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