Novel sound absorption and noise reduction structure

Abstract

The utility model discloses a novel sound absorption and noise reduction structure, which comprises a sound absorption and noise reduction structure, the sound absorption and noise reduction structure sequentially comprises a sound absorption surface layer, a composite noise reduction layer, a shielding layer, a separation layer and a base layer from a sound facing surface, the bottom surface of the base layer is provided with a hardened surface, and the shielding layer is a metal shielding layer. The optimized sound absorption and noise reduction structure is convenient to install and use, light in structural combination, simple in overall structural combination, convenient for large-scale production, very suitable for improving various sound environments, better in sound absorption and noise reduction effect and higher in absorption coefficient.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction materials technology, specifically a novel sound-absorbing and noise-reducing structure. Background Technology

[0002] Sound-absorbing and noise-reducing materials are effective at reducing sound propagation and noise levels, and are widely used in various places requiring a quiet environment, such as homes, offices, recording studios, and karaoke rooms. These materials achieve noise reduction by absorbing and dissipating the energy of sound waves, reducing sound reflection and propagation. However, existing materials lack a protective outer shell during use; directly fixing the material to the wall surface is inconvenient, and the exposed material layer affects aesthetics.

[0003] Based on this, the applicant proposes a novel sound-absorbing and noise-reducing structure. Utility Model Content

[0004] To address the aforementioned problems, this application provides a novel sound-absorbing and noise-reducing structure, employing the following technical solution:

[0005] A novel sound-absorbing and noise-reducing structure includes a sound-absorbing and noise-reducing structure, wherein the sound-absorbing and noise-reducing structure comprises, in sequence from the sound-facing surface, a sound-absorbing surface layer, a composite noise-reducing layer, a shielding layer, a separating layer, and a base layer, wherein the bottom surface of the base layer is provided with a hardened surface, and the shielding layer is a metal shielding layer.

[0006] Furthermore, the outer surface of the separator is covered with a plastic sealant layer, and the thickness of the plastic sealant layer is 0.5-1mm.

[0007] Furthermore, the sound-absorbing surface layer includes an aluminum honeycomb perforated sound-absorbing panel, and a protective mesh is provided on the sound-absorbing surface layer, and the protective mesh is made of metal. The protective mesh reduces damage caused by exposed surfaces during use, and the metal mesh also provides a shielding effect.

[0008] Furthermore, the composite noise reduction layer includes a polyester structural board, which is made by stacking and hot-pressing a first polyester fiber board, a polyester film, a second polyester fiber board, and a polyester fiber mesh. The polyester structural board exhibits superior sound absorption, particularly for low-frequency sounds. Furthermore, depending on the application area, the thickness of the polyester fiber board and polyester film, as well as the mesh count of the polyester fiber mesh, can be designed and optimized according to the specific low-frequency components requiring noise reduction. The polyester structural board is also lightweight, and its manufacturing process is simple, facilitating bonding and cutting.

[0009] Furthermore, the base layer is provided with raised structures, and 3-8 raised structures are distributed per square centimeter on the surface of the base layer.

[0010] Furthermore, the maximum height of the protrusion structure does not exceed 70% of the total thickness of the separator layer.

[0011] Furthermore, the separator layer is a foam-filled layer placed on the base layer, and the sides of the separator layer are flattened.

[0012] Furthermore, the foam filling of the separator layer is a multi-level porous foam metal, and the thickness of the separator layer is greater than 1 cm. Using foam metal as the separator layer has good sound absorption, heat insulation, and noise reduction effects.

[0013] Furthermore, a rubber layer is adhered to the bottom surface of the base layer. The rubber layer provides protection during use, facilitates assembly and installation, and is also suitable for installation and assembly on other structures, particularly automobiles.

[0014] Furthermore, the sound-absorbing and noise-reducing structure is encased in a protective shell, and a connecting structure is provided on the outside of the protective shell.

[0015] During use, the protective shell can protect the noise reduction structure as a whole and reduce damage. The connection structure is designed to facilitate assembly and splicing. The connection structure can be one or a combination of mortise and tenon, interlocking fasteners, or adhesive fasteners.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model optimizes the sound absorption and noise reduction structure, making it easy to install and use. Furthermore, the structure is lighter and simple to assemble for mass production. It is also very suitable for improving various acoustic environments, resulting in better sound absorption and noise reduction effects and a higher absorption coefficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a novel sound-absorbing and noise-reducing structure according to this utility model;

[0020] Figure 2 This is an exploded view of a novel sound-absorbing and noise-reducing structure shown in this utility model;

[0021] Figure 3 This is a schematic diagram of a novel sound-absorbing and noise-reducing structural partition layer shown in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of a novel sound-absorbing and noise-reducing base layer as shown in this utility model.

[0023] In the diagram: S01, sound-absorbing surface layer; S02, composite noise reduction layer; S03, shielding layer; S04, separation layer; S05, base layer; S051, raised structure; S06, protective shell; S07, foam metal; S08, plastic sealant layer. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] For specific examples, please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a novel sound-absorbing and noise-reducing structure includes a sound-absorbing and noise-reducing structure 1. From the sound-facing surface, the sound-absorbing and noise-reducing structure 1 comprises, in sequence, a sound-absorbing surface layer S01, a composite noise-reducing layer S02, a shielding layer S03, a separating layer S04, and a base layer S05. The bottom surface of the base layer S05 has a hardened surface. The shielding layer S03 is a metal shielding layer, which effectively blocks the propagation of electromagnetic waves. The sound-absorbing surface layer S01 includes an aluminum honeycomb perforated sound-absorbing panel, and a protective mesh, also made of metal, is provided on the sound-absorbing surface layer S01. The protective mesh reduces damage caused by exposed surfaces during use, and the metal mesh also provides a shielding effect.

[0026] The composite noise reduction layer S02 includes a polyester structural board, which is made by stacking and hot pressing a first polyester fiber board, a polyester film, a second polyester fiber board, and a polyester fiber mesh. The polyester structural board has a better sound absorption effect, especially for low-frequency sounds. In addition, according to different application areas, the parameters of the polyester fiber board, polyester film, and polyester fiber mesh can be designed and optimized according to the actual needs of noise reduction of low-frequency components. Furthermore, the polyester structural board is lightweight, and the manufacturing process is simple and convenient for bonding and cutting.

[0027] A raised structure S051 is provided on the base layer S05, with 3-8 raised structures S051 distributed per square centimeter on the surface of the base layer S05. The maximum height of the raised structure S051 does not exceed 70% of the total thickness of the separator layer S04. The separator layer S04 is a filling foam layer provided on the base layer S05, and the sides of the separator layer S04 are flattened to facilitate bonding with other structural layers. The filling foam of the separator layer S04 is a multi-level porous foam metal S07. In this embodiment, the optimal porosity of the multi-level porous foam metal S07 is 60-90%. The thickness of the separator layer S04 is greater than 1. The foam metal S07 used in this application has good sound absorption, heat insulation and noise reduction effects. The preparation process of the foam metal S07 can refer to the method disclosed in the existing application CN111515395B. The bottom surface of the base layer S05 is glued with a rubber layer, and the outside of the separator layer S04 is wrapped with a plastic sealing layer S08, and the thickness of the plastic sealing layer S08 is 0.5-1mm. Wrapping the plastic sealing layer S08 outside the separator layer S04 can reduce wear and facilitate the fit with the outer protective shell. The base layer S05 is an integral structure, which is made into the required shape structure by molding. It is mainly made of polyester fiber material.

[0028] Furthermore, the sound-absorbing and noise-reducing structure 1 consists of, from the sound-facing surface, a sound-absorbing surface layer S01, a composite noise-reducing layer S02, a shielding layer S03, a separating layer S04, and a base layer S05. An adhesive layer may be further provided between each of these layers. For example, an adhesive layer may be provided between at least one of the sound-absorbing surface layer S01 and the composite noise-reducing layer S02, and between the composite noise-reducing layer S02 and the shielding layer S03, and between the shielding layer S03 and the separating layer S04. Examples of adhesive layers include polyester resin, vinyl acetate resin, and ethylene-ethylene... Layers of adhesive components including vinyl ester copolymer resin, isobutylene-maleic anhydride copolymer resin, acrylic copolymer resin, acrylic monomers, acrylic oligomers, vinyl chloride resin, polyurethane resin (including moisture-curing type), silanized polyurethane resin, epoxy resin, modified epoxy resin, polyethylene resin and other polyolefin resins, ionomer resins, silicone resins, modified silicone resins, styrene-butadiene rubber, chloroprene rubber, nitrile rubber and other synthetic rubbers, isoprene rubber and other natural rubbers, water glass, silicates and other adhesive components.

[0029] The sound-absorbing and noise-reducing structure is encased in a protective shell S06, and the protective shell S06 has a connecting structure on its exterior. During use, the protective shell S06 can protect the overall noise-reducing structure and reduce damage. The connecting structure facilitates assembly and splicing. The connecting structure can be one or a combination of mortise and tenon joints, interlocking fasteners, or adhesive fasteners.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A new sound-absorbing noise-reducing structure, comprising a sound-absorbing noise-reducing structure (1), characterized in that: The sound absorption noise reduction structure (1) is sequentially provided with a sound absorption surface layer (S01), a composite noise reduction layer (S02), a shielding layer (S03), a separation layer (S04) and a base layer (S05) from the sound surface, the bottom surface of the base layer (S05) is provided with a hardened surface, the shielding layer (S03) is a metal shielding layer, the sound absorption noise reduction structure (1) is wrapped with a protective shell (S06) outside, and the protective shell (S06) is provided with a connecting structure outside.

2. The novel sound absorption and noise reduction structure according to claim 1, characterized in that, The separation layer (S04) is wrapped with a plastic sealing layer (S08) outside, and the thickness of the plastic sealing layer (S08) is 0.5-1mm.

3. The novel sound absorption and noise reduction structure according to claim 1, characterized in that, The sound absorption surface layer (S01) comprises an aluminum honeycomb perforated sound absorption plate, and a protective net is arranged on the sound absorption surface layer (S01), and the protective net is a metal net.

4. The novel sound absorption and noise reduction structure according to claim 1, characterized in that, The composite noise reduction layer (S02) comprises a polyester structural plate, and the polyester structural plate comprises a first polyester fiber plate, a polyester film, a second polyester fiber plate and a polyester fiber net which are made by stacking and hot pressing.

5. The novel sound absorption and noise reduction structure according to claim 1, characterized in that, The base layer (S05) is provided with a convex structure (S051), and the convex structure (S051) is distributed at 3-8 per square centimeter on the surface of the base layer (S05).

6. The novel sound absorption and noise reduction structure according to claim 5, characterized in that, The highest height of the convex structure (S051) is not more than 70% of the total thickness of the separation layer (S04).

7. The novel sound absorption and noise reduction structure according to claim 6, characterized in that, The separation layer (S04) is a filled foam layer arranged on the base layer (S05), and the side surface of the separation layer (S04) is flat treated.

8. The novel sound absorption and noise reduction structure according to claim 7, characterized in that, The filled foam of the separation layer (S04) is a foam metal (S07) with multiple levels of pores, and the thickness of the separation layer (S04) is greater than 1cm.

9. The novel sound absorption and noise reduction structure according to claim 1, characterized in that, The bottom surface of the base layer (S05) is pasted with a rubber layer.

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