CN216616342U - Sound insulation board structure - Google Patents

Abstract

The utility model relates to a sound insulation board structure, which comprises: a substrate; the reflecting unit is arranged on the substrate and comprises a reflecting groove and a reflecting bulge, and planes are arranged on the reflecting groove and the reflecting bulge; the scattering unit is arranged on the substrate and comprises a scattering groove and a scattering protrusion, and arc surfaces are arranged on the scattering groove and the scattering protrusion. The reflection unit reflects low-frequency sound waves, the scattering unit scatters medium-high frequency sound waves, the sound insulation performance of the material is improved through the coupling effect of reflection and scattering, the sound insulation frequency range is widened, and the purpose of noise isolation is achieved.

Description

Sound insulation board structure

Technical Field

The utility model relates to a sound insulation plate structure.

Background

With the continuous development of industrial technology, environmental pollution is becoming more and more serious. Noise pollution has become the fourth major environmental pollution problem following atmospheric pollution, water pollution, waste pollution. Meanwhile, with the continuous progress of society, the legal consciousness of people gradually rises, and the control on the noise environmental pollution is urgent day by day. The noise refers to the sound transmitted in a medium such as solid, liquid, or gas when the sounding body vibrates irregularly. Sound is generated by the vibration of an object and propagates in a certain medium (e.g., solid, liquid, gas) in the form of waves. Noise pollution is created when noise adversely affects people and the surrounding environment. Since the industrial revolution, the creation and use of various mechanical devices have brought prosperous and advanced people, and meanwhile, more and more noises are generated. The noise not only disturbs people's daily life, but also damages hearing and even induces carcinogenic diseases. Due to the public hazard characteristics and the acoustic characteristics of the noise, the noise has the characteristics of intermittence, locality, dispersity and the like, so that the noise cannot be intensively treated, and a special control method and a special material structure are required. In view of this, it is very important to develop a new sound insulation material with a structure to improve the living environment and the working quality of people.

The sound insulating materials on the market at present are roughly classified into two types. One is to follow the principle of mass law, depending on the frequency range of the sound insulation,

the unit area density of the sound insulation material is designed, and the sound insulation quantity of the material is improved by selecting a proper material combination. For example, chinese patent application nos. CN202010305905.5 and CN201910899697.3 improve sound insulation performance by changing the areal density of the material. The former designs the unit surface density of the material by optimizing the proportion of the base material, thereby improving the medium-high frequency sound insulation; the latter realizes effective isolation of noise through combination of multiple materials according to the frequency range of the noise. But both follow the principle of mass law and have poor isolation effect on low-frequency noise. Another is to improve the sound insulation of the material by optimizing the material structure. For example, chinese patent application nos. cn202022498630.x and CN202110547025.3 are both directed to improving sound insulation performance by designing sound insulation structures. The former improves the low-frequency sound insulation of the material by designing a film-mass fast resonance system; the film structure is overlapped by a plurality of film structures with different parameters, so that the low-frequency noise is effectively isolated. However, both of them use the principle of resonance, and their broadband sound insulation performance is general and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sound insulation plate structure, which solves the problem of broadband sound insulation.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a sound insulation board structure, which comprises:

a substrate;

the reflecting unit is arranged on the substrate and comprises a reflecting groove and a reflecting bulge, and planes are arranged on the reflecting groove and the reflecting bulge;

the scattering unit is arranged on the substrate and comprises a scattering groove and a scattering protrusion, and arc surfaces are arranged on the scattering groove and the scattering protrusion.

Preferably, the reflection unit and the scattering unit are arranged on the substrate in a staggered manner.

Preferably, the outer edge of the substrate extends to the same side to form a protective edge, an accommodating space is formed in the protective edge in a surrounding mode, and the reflection unit and the scattering unit are located in the accommodating space.

Preferably, the reflection groove and the reflection protrusion are rectangular hexahedral shapes.

Further, the reflection groove and the reflection protrusion extend over the entire width of the substrate.

Further, the reflection groove and the reflection protrusion have various widths and/or various depths, respectively.

Preferably, the scattering grooves and the scattering protrusions have various sizes, respectively.

Preferably, the bottom surface of the scattering groove and the surface of the scattering protrusion are both part of a spherical surface.

Preferably, the reflection unit extends on the substrate by a predetermined length, and the scattering unit is distributed in a plurality of points along the extending direction of the reflection unit.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the sound insulation plate structure, the reflection unit reflects low-frequency sound waves, the scattering unit scatters medium-high frequency sound waves, the sound insulation performance of the material is improved through the coupling effect of reflection and scattering, the sound insulation frequency range is widened, and the purpose of noise isolation is achieved.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic perspective view of a section of the reflection unit of FIG. 1;

FIG. 5 is a schematic perspective view of a section of the diffuser unit of FIG. 1;

wherein the reference numerals are as follows:

1. a substrate; 11. protecting edges;

2. a reflection unit; 21. a reflective groove; 22. a reflective bump;

3. a scattering unit; 31. a scattering groove; 32. and (4) scattering the bumps.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the sound insulation board structure comprises a substrate 1, and a plurality of reflection units 2 and a plurality of scattering units 3 arranged in the substrate 1.

The outer edge of the substrate 1 extends to the same side to form a protective edge 11, and an accommodating space is formed in the protective edge 11 in a surrounding mode, wherein the accommodating space is in a shape of a right-angled hexahedron, and the size of the accommodating space is 1200mm (length) x 600mm (width) x 20mm (height). The height can be increased according to requirements, the height of the embodiment is 20mm, and in an application scene, the height can be any value within 20-100 mm. The substrate 1 serves to align and fix the reflection unit 2 and the diffusion unit 3. Meanwhile, the substrate 1 serves as a carrier, forming a support frame.

The reflection unit 2 is composed of 6 reflection grooves 21 and reflection protrusions 22 which are different in size and structure. As shown in fig. 4, the reflection unit 2 includes a reflection groove 21 and a reflection protrusion 22, each of which is shaped like a rectangular parallelepiped. In fact, the reflection of the sound wave can be achieved by providing the reflection grooves 21 and the reflection protrusions 22 with flat surfaces. The reflective groove 21 and the reflective protrusion 22 extend over the entire width of the substrate 1. As shown in fig. 1 and 3, there are three reflective grooves 21 and three reflective protrusions 22, and the three reflective grooves 21 and the three reflective protrusions 22 have different sizes, i.e., at least one of the two parameters, i.e., the width and the depth, is different. The sizes (length, width and height) of the reflection groove 21 and the reflection protrusion 22 are related to the sound insulation frequency, and the sound insulation frequency and the sound insulation performance are adjusted by changing the structural sizes of the reflection groove 21 and the reflection protrusion 22.

As shown in fig. 1, the diffusion unit 3 is disposed on the substrate 1, and the diffusion unit 3 includes diffusion grooves 31 and diffusion protrusions 32. The bottom surface of the scattering groove 31 and the surface of the scattering protrusion 32 are both arc surfaces, and in this example, the bottom surface of the scattering groove 31 and the surface of the scattering protrusion 32 are both parts of a spherical surface. The scattering grooves 31 and the scattering protrusions 32 are distributed in multiple points along the extending direction of the reflection unit 2 and are distributed over the entire width of the substrate 1. The sizes of the scattering grooves 31 and the scattering protrusions 32 are also different in size. The scattering grooves 31 and the scattering protrusions 32 mainly scatter middle and high frequency noise. The sizes (diameter, height) of the scattering grooves 31 and the scattering protrusions 32 are related to the sound insulation frequency, and the sound insulation frequency and the sound insulation performance are adjusted by changing the structure size.

In this example, the reflection units 2 and the scattering units 3 are arranged alternately on the substrate 1.

As shown in fig. 1, when sound waves are incident to the interface I, a part of the sound waves enter the interior of the reflection unit 2 (the reflection groove 21 or the reflection protrusion 22) along the reflection unit 2, and when the incident wavelength is matched with the size of the reflection unit 2, the incident wavelength is totally reflected at the interface of the reflection groove 21 or the reflection protrusion 22, so that the transmission of low-frequency sound wave energy is reduced, and the low-frequency sound insulation effect is achieved. Meanwhile, a part of sound waves enter the interior along the scattering unit 3 (the scattering groove 31 or the scattering protrusion 32), and when the incident wavelength is matched with the size of the scattering unit 3, the incident wavelength is fully scattered at the interface of the scattering groove 31 or the scattering protrusion 32, so that the transmission of medium-high frequency sound wave energy is reduced, and the medium-high frequency sound insulation effect is achieved. Generally, one reflection unit 2 corresponds to one reflection frequency, and total reflection at a single frequency is generated. Similarly, one scattering unit 3 corresponds to one scattering frequency, and single-frequency total scattering is generated. However, due to the proximity coupling effect among the reflection units 2, the proximity coupling effect among the scattering units 3 and the coupling effect between the reflection units 2 and the scattering units 3, a plurality of coupling reflection and scattering frequencies are generated, so that the sound insulation frequency range is widened, and the overall sound insulation performance is improved.

The characteristics or the beneficial effects are as follows:

1) the mass is light, and the surface density is only one fifth of that of the traditional sound insulation material;

2) the sound insulation performance is good, and low-frequency sound insulation (100-400 Hz) can be realized;

3) the material structure can be customized and designed according to the noise frequency range;

4) simple structure, easy installation, low manufacturing and maintenance cost.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (9)

1. An acoustical barrier construction, comprising:

a substrate (1);

the reflection unit (2), the reflection unit (2) is arranged on the substrate (1), the reflection unit (2) comprises a reflection groove (21) and a reflection bulge (22), and planes are arranged on the reflection groove (21) and the reflection bulge (22);

the light-emitting diode light-emitting.

2. The sound barrier structure as claimed in claim 1, wherein: the reflection units (2) and the scattering units (3) are arranged on the substrate (1) in a staggered mode.

3. The sound barrier structure as claimed in claim 1, wherein: the outer edge of the substrate (1) extends towards the same side to form a protective edge (11), an accommodating space is formed in the protective edge (11) in a surrounding mode, and the reflection unit (2) and the scattering unit (3) are located in the accommodating space.

4. The sound barrier structure as claimed in claim 1, wherein: the reflection groove (21) and the reflection protrusion (22) are in the shape of a rectangular parallelepiped.

5. The sound-insulating board structure of claim 4, wherein: the reflection groove (21) and the reflection protrusion (22) extend over the entire width of the substrate (1).

6. The sound-insulating board structure of claim 4, wherein: the reflection groove (21) and the reflection protrusion (22) have a variety of widths and/or a variety of depths, respectively.

7. The sound barrier structure as claimed in claim 1, wherein: the scattering grooves (31) and the scattering protrusions (32) have various sizes, respectively.

8. The sound barrier structure as claimed in claim 1, wherein: the bottom surface of the scattering groove (31) and the surface of the scattering protrusion (32) are parts of a spherical surface.

9. The sound barrier structure as claimed in claim 1, wherein: the reflection unit (2) extends on the substrate (1) for a set length, and the scattering units (3) are distributed in a plurality of points along the extension direction of the reflection unit (2).

Images