KR102089503B1 - Frame for soundproof panels - Google Patents

Abstract

The present invention is to provide a frame for a soundproof plate that effectively absorbs noise while causing interference between incident sound waves and reflected sound waves in multiple diffraction.
To this end, in the present invention, a panel groove in which a border portion of the transparent panel is inserted is formed on the first surface, and a plurality of sound-absorbing holes are drilled at regular intervals on the second surface, and the second surface and the third surface opposite to the second surface. A hollow body having a mounting slot for mounting a membrane for dividing the space therebetween, installed inside the third surface of the body, but at regular intervals perpendicular to the direction of noise passing through the sound absorbing hole and the membrane A plurality of one-off ribs are formed, and the second diffraction block is formed on the diffraction block and the mounting slot in the body horizontally and in the direction of noise passing through the sound absorbing hole and the membrane at regular intervals on both sides of the first diffraction rib. Disclosed is a frame for a sound insulation board comprising a membrane that absorbs noise passing through.

Description

Frame for diffraction noise extinction type transparent sound insulation board without sound absorbing material {FRAME FOR SOUNDPROOF PANELS}

The present invention relates to a soundproof plate frame for reducing noise of a vehicle generated on a road, etc. More specifically, a diffraction noise extinguishing type transparent soundproof plate without a sound absorbing material that effectively absorbs noise while causing interference between incident sound waves and reflected sound waves in multiple diffraction It is about a dragon frame.

Today, a sound barrier is most commonly used for the purpose of reducing noise around the road, and this is a barrier-type structure in which sound barriers that block noise from the vehicle from entering the houses around the road are stacked and combined at a constant height between the supports. It is installed on the edges of roads, railways, or around factories.

There are various types of soundproofing plates (soundproof walls) depending on the characteristics, uses and materials of acoustic performance, and the sound absorbing type (considering the effect of the reflected sound on the other side of the road where the soundproofing wall is installed), reflective (soundproof) type It is classified as transparent (considering the expectation of infringement of sunshine and view rights and anticipation of freezing).

Among these, the sound-absorbing soundproof plates mainly used are representative of a gallery type having a slit-shaped opening on a metal plate surface and a punching type having a circular opening.

However, the conventional sound-absorbing sound-absorbing plate is composed of a panel-shaped plate, and has a structure that lowers the potential of sound waves (acoustics) flowing through holes formed on its surface by sound absorption. There is an increasing problem.

In addition, due to the structural characteristics that depend on the sound absorbing effect through a porous material made of sponge, such as glass wool and rock wool, the panel thickness must be made thick to maximize the sound absorbing performance, so the robustness and assembly are significantly reduced. There is a problem.

On the other hand, the transparent soundproof plate is usually made of a form surrounding the four sides of the transparent panel with a frame, as an example of such a transparent soundproof frame, the Republic of Korea Patent Publication No. 10-1506729 discloses a soundproof wall frame.

That is, as shown in Figure 1, the main frame 10, the main frame 10 is detachably coupled to the outer sound absorbing cover 20 formed with a first sound absorbing hole 21, and this outer sound absorbing cover ( The inner sound absorbing cover 30, which is coupled to the main frame 10 from the inside of the 20 and has a second sound absorbing hole 31, and a sound absorbing material disposed between the outer sound absorbing cover 20 and the inner sound absorbing cover 30 ( 40).

However, this is a structure in which sound energy is reduced by simply absorbing noise when passing through the sound absorbing material 40 and the inner sound absorbing cover 30 by being guided to the outer sound absorbing cover 20, so there is a limit that the sound absorption effect is not excellent.

The above-mentioned background technology or prior art is only to help the inventor understand the technical significance of the present invention as the information possessed by the inventor or acquired in the process of deriving the present invention, and the technology to which the present invention belongs prior to the filing of the present invention It does not mean that it is a technology widely known in the field.

KR 10-1375769 B1 (2014.03.12) KR 10-1506729 B1 (2015.03.23) KR 10-1679363 B1 (2016.11.18) KR 10-1637921 B1 (2016.07.04) KR 10-1668676 B1 (2016.10.18) KR 10-1643598 B1 (2016.07.22) KR 10-2015-0142969 A (2015.12.23)

Accordingly, the present inventor puts emphasis on solving the limitations and problems of the existing transparent soundproof frame while comprehensively considering the above-mentioned matters, and induces interference and resonance of sounds (incident and reflected sound). As a result, the present invention was devised as a result of continuous research with the utmost efforts to develop a frame for a soundproof plate of a new structure capable of promoting the effect of reducing the acoustic potential.

Therefore, the technical problem and object to be solved by the present invention is to provide a frame for a soundproofing plate that induces acoustic interference by multiple diffraction, and also produces resonance to maximize a noise reduction effect.

Here, the technical problems and objectives to be solved by the present invention are not limited to the technical problems and objectives mentioned above, and other technical problems and objectives not mentioned will be clearly understood by those skilled in the art from the following description.

A specific means according to an embodiment of the present invention for achieving the above object and solving the technical problem, the panel groove is formed in which the rim portion of the transparent panel is inserted on the upper surface, the sound absorbing hole on one side of the regular space A hollow body formed with a mounting slot for mounting a membrane that divides a space between both sides on the inside, and has a plurality of holes therein, a membrane that is mounted on a mounting slot in the body and absorbs noise passing therethrough, and the inside of the other side of the body In the apparatus, a plurality of first diffraction ribs are formed at regular intervals parallel to the direction of noise flowing through the sound absorbing hole and the membrane, and the sound absorbing holes are spaced at both sides of the first diffraction rib. A number of second diffraction ribs are formed horizontally in the direction of noise flowing through the membrane. Proposes a frame for sound insulation board, characterized in that the employed, including block.

Accordingly, the present invention can effectively attenuate noise by effectively inducing reflection and interference of multi-diffraction sound (incident and reflected sound waves).

In a preferred embodiment of the present invention, the main body can maximize the noise reduction effect by reducing the acoustic potential by causing resonance by forming the first and second extinction spaces with the membrane interposed therebetween.

In a preferred embodiment of the present invention, by inducing the diffraction of noise on the surface of the diffraction block, the activated carbon particles are settled together to amplify the interference, thereby more effectively reducing the acoustic potential.

In a preferred embodiment of the present invention, the membrane is made of a porous plate in which a plurality of micropores are drilled at regular intervals, and a porous material that is attached to one side of the porous plate and converts sound energy passing through it into vibrational energy and attenuates it. High frequency noise as well as low frequency noise can be more effectively reduced.

Embodiments of the present invention with means and configurations for achieving the above object and solving the technical problem, the noise is primarily attenuated (attenuation) while passing through the sound-absorbing hole and the membrane of the main body, and also the main body In the first and second extinction spaces (cavities), sound waves are absorbed by the interference phenomenon, and the transmission paths of sound (incident and reflected sound waves) are multiplied by the first and second diffraction ribs, so noise reduction is reduced. The effect can be maximized.

In addition, unlike the prior art, since a thick porous sound absorbing material is not required, the overall thickness can be reduced, thereby improving the space efficiency due to transport and storage, as well as the ease and convenience of installation.

Here, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing an example of a frame for a sound insulation board according to the prior art.
2 is a perspective view showing a soundproof plate frame according to an embodiment of the present invention.
3 is a cross-sectional view showing a frame for a sound insulation board according to an embodiment of the present invention.
Figure 4 is a local enlarged cross-sectional view for explaining the state of use of the soundproof plate frame according to an embodiment of the present invention.
5 is a cross-sectional view showing a frame for a sound insulation board according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Prior to this, terms to be described later are defined in consideration of the functions in the present invention, which clearly indicates that they should be interpreted in terms of concepts consistent with the technical spirit of the present invention and commonly recognized or commonly recognized in the art.

In addition, if it is determined that a detailed description of known functions or configurations related to the present invention may obscure the subject matter of the present invention, the detailed description will be omitted.

Here, the attached drawings are exaggerated or simplified for a convenience and clarity of description and understanding of the structure and operation of the technology, and it is revealed that each component does not exactly match the actual size and shape.

In addition, in the present specification, and / or the term means a combination of a plurality of related described items or any of the plurality of related listed items, and when a part includes a certain component, this is a particularly contrary description. It does not mean that other components are not excluded, but that other components can be further included.

That is, it means that a feature, number, step, operation, component, part, or combination thereof described in the present specification exists, and one or more other features or number, step operation component, part, or combination thereof. It should be understood that it does not exclude the possibility of the existence or addition of things.

And terms such as top, bottom, top, bottom, or top, bottom, top, and bottom are used for convenience to distinguish the relative positions of each component. For example, the upper side of the drawing may be named and referred to as the upper side and the lower side as the lower side.

In addition, terms such as first and second may be used to describe various components. That is, terms such as first and second may be used only for the purpose of distinguishing one component from another component. For example, the first component may be referred to as the second component without departing from the scope of the present invention, and the second component may also be referred to as the first component.

In the following description, when a soundproof wall is installed on a roadside, the direction facing the road is defined as the front, and the direction in which noise is introduced is defined as the front.

2 to 4, the frame for a soundproofing plate according to another embodiment of the present invention is installed at four edges of a transparent panel (P) constituting a transparent soundproofing plate that is stacked between a prop and a main body ( 100), the membrane 200 and the diffraction block 300.

The main body 100 has a constant length, and its cross section is formed in a square pipe shape, and a panel groove 110 into which an edge portion of the transparent panel P is inserted is formed on the upper surface, and noise is rearward from the front side on one side. As it flows into the absorption or scattering, the sound absorbing holes 120 diffracting noise in different directions are drilled at regular intervals.

In addition, a mounting slot 130 for mounting the membrane 200 dividing the space between both sides is formed in the hollow interior (cavity) of the main body 100.

In addition, the main body 100 has first and second extinction spaces 160 and 170 formed between both sides and the membrane 300.

That is, the first and second extinction spaces 160 and 170 are formed such that a part of noise reflected by the incident angle and noise coming through the sound absorbing hole 120 are synthesized to cause extinction interference.

Here, by varying the areas formed by the first and second extinction spaces 160 and 170, noise in different frequency bands can be attenuated. For example, the first extinction space 160 of the small cavity may absorb noise in the high frequency band, and the second extinction space 170 of the large cavity may absorb noise in the low frequency band.

On the other hand, one side of the body 100 in which the sound absorbing hole 120 is formed is molded and processed separately from the body 100 in order to secure the ease of processing of the sound absorbing hole 120, etc. It can also be removed in a custom way.

That is, the inner space of the main body 100 forms a hemispherical locking projection 140, a sound absorbing hole 120 is formed to correspond to this, and a hemispherical locking recess 150 is formed in a portion forming one side of the main body 100. By forming), it is elastically deformed by elasticity when attaching and detaching each other, so that it is simple and easy to detach and maintain a stable bonding state.

In addition, the size (diameter), number, spacing (cavity), and volume and aperture ratio of the sound absorbing hole 120 can be appropriately adjusted and designed according to the installation height of the soundproof wall, the wind load at the installation site, and the noise frequency band. .

In addition, the sound absorbing hole 120 may be formed in a circular or a slot hole shape having a long axis and a short axis. For example, it can be formed by drilling a long hole of a certain length on one side of the main body 100 and pressing a portion of its edge to protrude to the outside.

In addition, the sound absorbing hole 120 may be formed at an inclined angle to induce a vortex of noise.

Here, the main body 100 may be molded by extruding an aluminum alloy, a galvanized steel sheet, or the like in a predetermined cross-sectional shape having a thickness that ensures bending rigidity and prevents structural deformation.

On the other hand, in the middle of the upper surface of the panel groove 110, the holder (H) and the screw coupling to insert the nut when fixing the transparent panel (P), and when tightening with a bolt to keep the nut so that the nut is not detached The nut groove 111 is formed along the longitudinal direction.

That is, the holder H is formed so that the transparent panel P can be firmly supported and fixed to the panel groove 110 of the main body by the tightening force of the bolt and the nut.

The membrane 200 absorbs noise passing between the first extinction space 160 and the second extinction space 170 of the main body and attenuates the sound absorbing effect due to viscous friction of the air or vibration loss of fibers along with diffraction. It is fitted in a sliding manner to the mounting slot 130 in the body.

In addition, the membrane 200 has a certain length and is provided with a thin plate-shaped perforated plate 210 in which a plurality of micro-pores for absorbing and dispersing noise are drilled at regular intervals, and sound passing through one side of the perforated plate 210 A porous material 220 that converts energy to vibration energy and attenuates it is attached.

That is, when the sound wave is incident on the porous material 220 using the mass of the porous material 220, the membrane 200 converts the sound wave energy into vibration and thermal energy through friction with the fine fibers to attenuate noise. Noise can be absorbed and attenuated.

Here, the diameter of the micro-pores of the perforated plate 210 is smaller than the diameter of the sound-absorbing holes 120 of the main body, thereby effectively absorbing low-frequency noise and maximizing the amount of noise attenuation.

In addition, the porous material 220 is breathable, and may be made of a porous material such as rock wool, glass fiber, felt, or cloth, or a fiber length, which exhibits sound absorption effects due to viscous friction of air or vibration loss of fibers.

The diffraction block 300 is installed inside the other side of the main body 100 so as to attenuate noise introduced through the sound absorbing hole 120 and the membrane 200 from the front through reflection, diffraction, and mutual interference.

In addition, the diffraction block 300 has a plurality of first diffraction ribs 310 at regular intervals parallel to the direction of noise flowing through the sound absorbing hole 120 and the membrane 200, and the first diffraction block 300 is formed. A plurality of second diffraction ribs 320 are formed in a multi-stage shape parallel to the direction of the noise flowing through the sound absorbing hole 120 and the membrane 200 at regular intervals on both sides of the rib 310.

For example, the first diffraction rib 310 may be formed in the form of a partition wall dividing and dividing the cavity between the upper and lower surfaces of the main body 100 into a plurality, and the second diffraction rib 320 has a partition wall having a different length. It may be formed to divide a plurality of cavities between the left and right sides of the body 100.

Meanwhile, as illustrated in FIG. 4, activated carbon particles 330 may be settled on the surface of the diffraction block 300 to amplify interference by inducing diffraction of noise.

That is, when the noise hits the bulging activated carbon particles 330 of the diffraction block 300, the reflection, diffraction, and mutual interference phenomena are amplified, so that the transmission path of the noise becomes longer and the acoustic potential can be reduced more effectively.

Here, the diffraction block 300 may be integrally formed along the longitudinal direction in the inner space of the main body 100, but is not limited thereto.

For example, the diffraction block 300 has a thickness that ensures bending stiffness and can be formed by extruding an aluminum alloy or the like integrally with the body 100.

On the other hand, as shown in FIG. 5, the diffraction block 300 'is molded and processed separately from the main body 100 so that the activated carbon particles 330 can be easily and easily set (coated), and then fitted into each other. It can also be attached or detached using a male or female combination method.

That is, the diffraction block 300 'has a thickness that ensures bending rigidity and can be molded by extruding an aluminum alloy or the like separately from the main body 100.

The frame for a soundproofing plate according to an embodiment of the present invention configured as described above passes through noise generated inside the soundproofing plate to the sound absorbing holes 120, the first and second extinguishing spaces 160, 170, and the membrane 200 in stages. And the absorption of reflection, diffraction, and mutual interference, and the loss of acoustic potential by lengthening the transmission path of the sound (incident and reflected sound) by multiple diffraction by the first and second diffraction ribs 310 and 320 This is done effectively, and the effect of noise attenuation in the even frequency band can be obtained.

That is, the noise is primarily absorbed while passing through the sound absorbing holes 120, and is absorbed and passed through the porous material 220 secondarily by the fine holes formed in the porous plate 210 of the membrane. The vibration is converted into thermal energy by attenuating the frictional resistance of the inner surface of the micropores and the friction between the fibers, and then attenuated by the diffraction block 300.

At this time, some of the noise is reflected to the first and second extinction spaces 160 and 170 corresponding to the incident angle, and some are absorbed by friction with the porous material 220 (consuming energy while vibrating), and the rest of the noise Since it escapes behind the diffraction block 300, it is possible to maximize the amount of noise attenuation.

On the other hand, the present invention is not limited by the above-described embodiments and the accompanying drawings, and can be variously modified and applied in various ways that are not exemplified without departing from the scope of the technical spirit of the present invention. It is apparent to those of ordinary skill in the art to which the present invention pertains that the invention may be broadly applied by changing to other equivalent embodiments.

Therefore, the contents related to modifying and applying the technical features of the present invention should be interpreted as being included within the technical spirit and scope of the present invention.

100: main body 110: panel groove
111: nut groove 120: sound absorption hole
130: mounting slot 140: locking portion
150: jam portion 160: the first extinction space
170: second extinction space 200: membrane
210: perforated plate 220: porous material
300: diffraction block 310: first diffraction rib
320: second diffraction rib 330: activated carbon particles
P: Transparent panel H: Holder

Claims (5)

A hollow panel main body 100 in which a panel groove 110 into which an edge portion of the transparent panel is inserted is formed on the upper surface, and a plurality of sound absorption holes 120 are drilled at regular intervals on one side, and a mounting slot 130 is formed inside. ; A membrane 200 which is mounted on the mounting slot 130 in the main body 100 to divide the space into first and second extinction spaces and absorb noise passing therethrough; Installed inside the other side of the main body 100, and includes a diffraction block 300 to absorb noise introduced through the sound absorbing hole 120 and the membrane 200;
The membrane 200 is attached to one side of the perforated plate 210, which has a plurality of micropores at regular intervals, and is attached to one side of the perforated plate 210, and converts sound energy passing through it into vibration and thermal energy through friction. What is made of a damping porous material 220 is applied;
The diffraction block 300 is formed to be integrally formed in the inner space of the main body 100 or detachably formed in the inner space of the main body 100, but the first diffraction ribs are spaced vertically at regular intervals ( A plurality of 310 is formed, the second diffraction rib 320 horizontally and in the direction of the noise flowing through the sound absorbing hole 120 and the membrane 200 at regular intervals on both sides of the first diffraction rib 310 ) Is formed a large number of protrusions, the sound-proof plate frame, characterized in that the activated carbon particles 330 are protruded to increase the interference by inducing the diffraction of noise on the surface. delete delete delete delete

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