KR20170077487A

KR20170077487A - Soundproof panel for the sound proofing wall of road

Info

Publication number: KR20170077487A
Application number: KR1020150187411A
Authority: KR
Inventors: 배우수; 윤영란
Original assignee: 배우수; 윤영란
Priority date: 2015-12-28
Filing date: 2015-12-28
Publication date: 2017-07-06

Abstract

The present invention minimizes the transmission loss and leakage of noise in a soundproofing wall in which a plurality of panels equipped with a sound absorbing function are installed to reduce traffic noise on a road, thereby improving the sound absorption performance and improving the durability of the panel The present invention relates to a sound-absorbing panel for a sound-
In other words, a sound-absorbing panel is composed of a front plate having concave / convex portions on its surface so as to have reinforcements and voids in the state of forming innumerable treads into which noise flows, and a rear plate coupled to the rear In the arm; A first sound absorbing material formed in a flat plate shape in an inner space formed by the front plate and the rear plate, and a second sound absorbing material having a mosaic-type bending portion extending a sound absorbing area while maintaining a space on a surface contacting the first sound absorbing material Wherein a plurality of frames are laid up and down in the width direction so that the first and second sound absorbing materials are in close contact with the inner surface of the front plate in a superimposed state while exerting a resisting force on the inner surface of the rear plate, The sound absorbing material is made of a PE material having a specific gravity ranging from 28 to 35K, and the second sound absorbing material is made of a recycled PU material having a specific gravity ranging from 38 to 47K.

Description

[0001] The present invention relates to a soundproof panel for a soundproof wall,

The present invention relates to a sound absorbing panel for a road soundproof wall, and more particularly, to a sound absorbing panel for a road soundproof wall, in which a plurality of panels having a sound absorbing function are stacked to reduce traffic noise on a road, The sound absorbing material is closely attached to and supported by a plurality of frames provided inside the panel by minimizing the transmission loss and leakage of noise to increase the sound absorbing performance and to improve the durability To a sound absorbing panel for a road soundproofing wall.

Generally, in order to reduce the damage due to the noise generated from a traffic vehicle, a plurality of pillars are installed at regular intervals so as to stand vertically and then a soundproofing plate having a sound absorption function is stacked There are various types of soundproofing walls that are designed to block noise.

The soundproof wall is formed with a perforated plate on the surface of the soundproof plate against which noises are struck so that the sound absorption energy is absorbed again from the soundproof plate installed inside the soundproof plate after resonance, The noise generated is prevented from diffusing and propagating to the residential area located at the back of the soundproof panel.

Most of these soundproofing boards have the effect of absorbing the noise inside the soundproofing plate because the front plate is made of one plate and thus it is difficult to manufacture and handle, and since the support strength of the front plate is weak, it is easily deformed by wind pressure or external small impact. It is pointed out that the noise deficiency is insufficient and the noise passing through the tachometer is not absorbed by the sound absorbing material.

As an example of the prior art for solving the above-mentioned defects, a front plate is made of ABS resin having a thickness of 5 mm, and an impregnated sound hole is formed so as to occupy a ratio of 45 to 70% per unit area, and a sound absorbing material and a silk (Refer to Patent Registration No. 10-103695), which is assembled so as to accommodate a mesh, has been proposed. However, since the front plate is composed of a plurality of front plates, it is troublesome in the process of assembling to the main body, There is a problem that the noise is generated due to the blinking due to the wind and it is easily damaged by the external force.

In order to improve the sound-absorbing performance of the sound-absorbing plate, a sound-absorbing material, a carbon sound-absorbing plate in which natural charcoal carbon is inserted, and a sound-insulating material for blocking noise are sequentially disposed between the rear lid, which is fastened to a front- An eco-friendly wave type carbon sound insulation plate (Patent No. 10-0864005) in which an attached filter unit is inserted has been proposed.

In the conventional art, the air introduced into the front pier is purified while passing through the multiple filter portions, so that clean air is discharged to the rear cover side to reduce pollution, and the natural charcoal of the filter portion regulates the temperature and humidity inside the sound- However, since the structure of the sound absorbing material having different properties of the filter part, the carbon sound absorbing panel and the sound insulating material is integrally attached thereto, it is relatively suitable for air purification, while the performance for blocking noise is relatively low.

That is, although the filter unit is composed of a plurality of materials having different sound-absorbing performances, since each material is in close contact with a single body, there is almost no change in the medium when the noise passes, and individual sound-absorbing performance is lost, Can not be blocked.

Further, since the filter portion interposed between the front pier plate and the rear lid is supported by a single bent portion formed laterally in the central portion of the rear lid, when a shearing force is applied to the bent portion of the rear lid, bending deformation occurs There is a problem that the supporting force against the filter portion is lost and the sound absorption performance is deteriorated.

The object of the present invention is to provide a soundproofing plate which is capable of absorbing the noise introduced through the ridges of the front plate and passing through the curved surface formed between the two sound absorbing materials having different specific gravity and the air layer A sound absorbing panel for a road noise barrier which can dissipate sound waves while diffusing and diffusing the sound waves to improve the sound absorption performance.

Another object of the present invention is to provide a sound absorbing panel for a road soundproofing wall which can be supported by a plurality of frames attached to the inner side surface of a rear plate so as to increase the durability of the sound absorbing material interposed between the front plate and the rear plate.

In order to achieve the above object, according to the present invention, there is provided a front plate having a convexo-concave portion on its surface so as to have a convexo-concave portion and a cavity in a state of forming innumerable tongues into which noise flows, A sound-absorbing panel comprising: A first sound absorbing material formed in a flat plate shape in an inner space formed by the front plate and the rear plate, and a second sound absorbing material having a mosaic-type bending portion extending a sound absorbing area while maintaining a space on a surface contacting the first sound absorbing material Wherein a plurality of frames are laid up and down in the width direction so that the first and second sound absorbing materials are in close contact with the inner surface of the front plate in a superimposed state while exerting a resisting force on the inner surface of the rear plate, Wherein the sound absorbing material is a flat plate type PE material having a specific gravity ranging from 28 to 35K, and the second sound absorbing material is a regenerated PU material having a specific gravity ranging from 38 to 47K.

In the sound-absorbing panel for a road sound barrier according to the present invention, the noise introduced through the ridge of the front plate is divided into a cavity formed by the concave-convex portion of the front plate, first and third sound-absorbing materials having different specific gravity, It is possible to effectively extinguish the noise of various bands in the process of sequentially passing through the air space formed by the frame and the isolated space formed between the rear plates by the plurality of frames.

In addition, the plurality of frames provided on the back panel improve the durability by alleviating the shock applied to the sound-absorbing panel, and the second sound-absorbing material is manufactured using the recycled PU material, thereby recycling the resources and reducing the manufacturing cost There is also an economic advantage.

1A and 1B are an exploded perspective view showing a part of a sound-absorbing panel for a road sound barrier according to the present invention,
FIG. 2 is a cross-sectional view showing a laminated state of the sound-absorbing panel for the road sound barrier,
FIGS. 3A and 3B are perspective views showing a construction process and a completed state of the sound-absorbing panel for a road sound-deadening wall according to the present invention.
3 is a cross-sectional view showing a laminated state of the sound-absorbing panel for the road sound-deadening wall.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sound absorbing panel for a road sound barrier according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a sound absorbing panel for a road sound barrier according to the present invention, and FIG. 2 is a cross-sectional view showing a laminated state of the sound absorbing panel for the road sound barrier, The present invention relates to a sound absorbing panel for a road sound barrier, which can be installed in a densely populated area or on a road side of a section requiring a quiet pass, thereby effectively preventing noise generated due to vehicle passage and enhancing durability life.

The sound-absorbing panel includes a front plate (10) having a concavo-convex portion (12) on its surface so as to be provided with a space along with reinforcement in a state where a number of treads (11) And a rear plate 20 coupled to the rear surface to maintain the inner space.

A knuckle portion 13 bent rearward is formed at an upper portion of the front plate 10 to receive the upper portion of the rear plate 20. An insertion portion 14 are formed so as to penetrate through the knuckle portion 13 from the outside of the knuckle portion 13 with the lower end face of the rear plate sandwiched therebetween.

A plurality of frames 21 are laid on the inner surface of the rear plate 20 so as to be arranged vertically in the width direction so as to be in close contact with the front plate 10 with the sound absorbing material to be described next, And is attached by a tie.

The first sound absorbing material 30 made of a PE material having a specific gravity in the range of 28 to 35 K and the first sound absorbing material 30 having a specific gravity in the range of 28 to 35 K are formed in the inner space formed by the front plate 10 and the rear plate 20, A second sound absorbing material 40 of a regenerated PU material having a specific gravity in the range of 38 to 47K is provided in order to provide a mosaic-type bending portion 41 so as to extend the sound absorption area.

The thickness of the first sound absorbing material 30 of the PE material is 20 to 30 mm and the thickness of the second sound absorbing material 40 of the PU material is 40 to 50 mm so that the bending portion 41 formed on one side of the first sound absorbing material 30 30).

3A and 3B are perspective views showing a construction process and a completed state of a sound-absorbing panel for a road sound-deadening wall according to the present invention, in which a plurality of sound-absorbing panels are stacked so as to be supported on both struts B standing upright in a vertically- The sound barrier is completed by making the front plate 10 provided with the numerous treads 11 face the road where the noise is generated.

The noise introduced into the inner space with the back plate 20 through the rudder 11 of the front plate 10 is absorbed by the first sound absorbing material 30 and the second sound absorbing material 40 of the overlapped PE material, In the first sound absorbing material 30 having relatively small specific gravity, the sound is absorbed and destroyed first, and the sound waves that have not yet disappeared are absorbed and absorbed by the second sound absorbing material 40 having a relatively large specific gravity.

When the sound wave that has not decayed from the first sound absorbing material 30 is directed to the second sound absorbing material 40, the mosaic-type bending portion 41 provided on one side of the first sound absorbing material 30 functions to expand the sound absorbing area, Since the space is formed between the first sound absorbing material 30 and the second sound absorbing material 40 so that the sound absorbing performance is improved in proportion to the expanded sound absorbing area while the sound waves are passed through the air layer in which the medium is different, Diffuse and diffuse to efficiently dissipate sound waves of a specific band.

The plurality of frames 21 provided on the rear plate 20 support the first sound absorbing material 30 and the second sound absorbing material 40 so as to keep the state isolated from the second sound absorbing material 40 absorbing and extinguishing the noise. Thus, the phenomenon that the resonance sound is transmitted to the rear plate is blocked.

That is, the noise introduced through the tread 11 includes a gap formed by the concave-convex portion 12 formed on the surface of the front plate 10; First and third sound absorbing materials 30 and 40 having different specific gravity; An air layer provided by a bent portion therebetween; And an isolated space formed between the rear plate (20) by the plurality of frames (21); So that the noise of various bands is destroyed.

In addition, the plurality of frames 21 provided on the rear plate 20 serve to enhance the durability by exerting stress corresponding to the pressure applied to the long sound-absorbing panels or the outflow.

Since the second sound absorbing material 40 is manufactured using the regenerated PU material, there is an economical advantage that the resources can be recycled and the manufacturing cost can be reduced.

10: front plate 11:
12: concave / convex portion 13: knuckle portion
14: insertion portion 20: rear plate
21: frame 30: first sound absorbing material
40: second sound absorbing material 41: bent portion

Claims

A front plate 10 provided with a concave / convex portion 12 on its surface so as to form a number of troughs 11 into which noises are introduced, And a rear plate (20) coupled to the front panel
A knuckle part (13) bent backward to receive the upper part of the rear plate (20) is formed on the front plate (10), and an insertion part 14 are formed so as to penetrate from the outside of the knuckle portion 13 through the screw in a state of sandwiching the lower end face of the rear plate,
The inner space formed by the front plate 10 and the rear plate 20 has a first sound absorbing material 30 formed in a flat plate shape and a mosaic type sound absorbing material 30 for expanding a sound absorbing area while maintaining a space on a surface contacting the first sound absorbing material And a second sound absorbing material 40 having a bent portion 41 of the first sound absorbing material 40 interposed therebetween,
The first and second sound absorbing members 30 and 40 are in contact with the inner surface of the front plate 10 while being superposed on the inner surface of the rear plate 20, 21. A sound absorbing panel for a road soundproofing wall, comprising:

The PU according to claim 1, wherein the first sound absorbing material (30) is made of a PE material having a specific gravity ranging from 28 to 35 K and the second sound absorbing material (40) is made of a recycled PU material having a specific gravity ranging from 38 to 47K And a sound absorbing panel for a road soundproofing wall.