Resonance acoustic board

Abstract

The utility model discloses a resonance acoustic board and belongs to the technical field of sound absorption. A resonance sound absorption plate comprises a back plate and further comprises a plate body with an air cavity, a mounting groove is formed in the back plate, the plate body is arranged in the mounting groove, a perforated plate is detachably arranged at the top of the mounting groove, the bottom of the perforated plate abuts against the top of the plate body, and through holes of the perforated plate are communicated with the air cavity; the mounting groove is formed in the back plate, the plate body with the air cavity is arranged in the mounting groove in a sliding mode, then the perforated plate is detachably arranged at the opening of the mounting groove, and the bottom end face of the perforated plate abuts against the top end face of the plate body, so that the plate body is fixed in the mounting groove, and the plate body and the back plate are designed in a split mode; on one hand, the plate body is convenient to assemble and disassemble, the replacement of the plate bodies with the air cavities with different depths is realized, the sound absorption frequency is convenient to adjust, on the other hand, the back plate does not need to be assembled, disassembled and replaced, the assembling and disassembling efficiency can be improved, the waste of the back plate can be avoided, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sound absorption technology, and in particular to a resonant sound-absorbing plate. Background Technology

[0002] A resonant sound-absorbing panel is a material or structure used to absorb sound within a specific frequency range. It enhances the absorption of noise in a particular frequency band by utilizing the principle of physical resonance. This type of sound-absorbing panel typically consists of multiple layers, including a panel, an air cavity, and a back panel. It primarily operates based on the principle of a Helmholtz resonator. When sound waves strike the panel, they cause minute vibrations and create pressure fluctuations within the air cavity. If the frequency of the sound wave matches the system's natural resonant frequency, a strong energy conversion occurs, transforming sound energy into heat energy, thus achieving a highly efficient sound absorption effect.

[0003] During use, the depth of the air cavity affects the frequency of sound absorption. For example, a deeper air cavity is suitable for absorbing lower frequency sounds, while a shallower air cavity is more suitable for absorbing high frequency noise. In the existing technology, the air cavity is usually fixedly connected to the back plate, which is often fixed to the wall with screws. Therefore, it is inconvenient to install and remove. When it is necessary to adjust the frequency of noise absorption, the entire air cavity needs to be removed and replaced. This not only increases the replacement time and reduces efficiency, but also wastes the back plate and affects the cost of use. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that it is inconvenient to install, disassemble and replace the air cavity when adjusting the sound absorption frequency, and to propose a resonant sound-absorbing plate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A resonant sound-absorbing panel includes a back plate and a panel body with an air cavity. The back plate has an installation groove, the panel body is disposed in the installation groove, and a perforated plate is detachably disposed on the top of the installation groove. The bottom of the perforated plate abuts against the top of the panel body, and the through holes of the perforated plate are connected to the air cavity.

[0007] To facilitate the assembly and disassembly of the perforated plate, preferably, through grooves are provided on both sides of the perforated plate, and elastic retaining plates are fixedly installed in the through grooves. Retaining slots are provided on both sides of the inner wall of the mounting groove, and the free end of the elastic retaining plate is engaged with the retaining slot.

[0008] To improve overall aesthetics, the top end face of the perforated plate is flush with the top end face of the mounting groove.

[0009] To facilitate the support and fixation of the plate, preferably, a support platform is fixedly provided on the inner wall of the mounting groove, and fixing plates are fixedly provided on all four sides of the plate. The bottom of the fixing plate abuts against the top of the support platform, and the bottom of the perforated plate abuts against the top of the fixing plate.

[0010] Preferably, a sound-absorbing pad is laid between the perforated plate and the plate body, with the top and bottom of the sound-absorbing pad abutting against the perforated plate and the plate body respectively, and the sound-absorbing pad is made of polyurethane foam.

[0011] Preferably, a stepped hole is provided at the bottom of the mounting groove, and a screw is provided in the mounting groove. The screw passes through the stepped hole and is threaded to the wall.

[0012] Compared with the prior art, the present invention provides a resonant sound-absorbing plate with the following advantages:

[0013] 1. This resonant sound-absorbing panel features an installation groove on the back panel. The panel with an air cavity is slidably placed in the installation groove, and a perforated plate is then removed and installed at the opening of the installation groove. The bottom end face of the perforated plate abuts against the top end face of the panel, thus fixing the panel in the installation groove. The panel and back panel are designed separately, which facilitates the assembly and disassembly of the panel and allows for the replacement of panels with air cavities of different depths, making it easy to adjust the sound absorption frequency. On the other hand, it eliminates the need to assemble and disassemble or replace the back panel, which not only improves assembly and disassembly efficiency but also avoids waste of the back panel and reduces usage costs.

[0014] 2. This resonant sound-absorbing panel features an elastic retaining plate fixedly mounted on a perforated plate. A retaining groove is provided inside the mounting slot, allowing the elastic retaining plate to engage with the groove, thus securing the perforated plate within the mounting slot. During disassembly, a flathead screwdriver or a piece of metal can be inserted into the groove to push the free end of the elastic retaining plate away from the retaining groove, allowing the perforated plate to be removed from the mounting slot. This convenient disassembly contributes to improved performance.

[0015] All parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model provides an installation groove on the back plate, in which a plate with an air cavity is slidably placed. A perforated plate is then removed and installed at the opening of the installation groove. The bottom end face of the perforated plate abuts against the top end face of the plate, thus fixing the plate in the installation groove. The plate and back plate are designed as separate units, which facilitates the assembly and disassembly of the plate, allowing for the replacement of plates with air cavities of different depths and convenient adjustment of the sound absorption frequency. Furthermore, it eliminates the need to assemble, disassemble, and replace the back plate, thereby improving assembly and disassembly efficiency, avoiding waste of the back plate, and reducing operating costs. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a resonant sound-absorbing plate proposed in this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of a resonant sound-absorbing plate proposed in this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of a resonant sound-absorbing plate proposed in this utility model. Figure 3 ;

[0019] Figure 4 This is a partial cross-sectional view of a resonant sound-absorbing plate proposed in this utility model.

[0020] In the diagram: 1. Back panel; 101. Mounting groove; 102. Support platform; 103. Slot; 2. Panel; 201. Air cavity; 202. Fixing plate; 3. Perforated plate; 301. Through groove; 302. Elastic retaining plate; 4. Sound-absorbing pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example:

[0024] Reference Figures 1-4A resonant sound-absorbing panel includes a back plate 1 and a panel 2 with an air cavity 201. A mounting groove 101 is formed within the back plate 1. Stepped holes are formed at the bottom inner surface of the mounting groove 101, penetrating the back plate 1. There are two to ten stepped holes; in this case, four are evenly distributed at the bottom inner surface of the mounting groove 101. Screws are installed within the mounting groove 101, passing through the corresponding stepped holes and threaded to the wall to fix the back plate 1 to the wall. The panel 2 is placed within the mounting groove 101. A perforated plate 3 is detachably installed at the top of the mounting groove 101. The perforated plate 3 is made of aluminum, stainless steel, or wood, preferably aluminum. The bottom of the perforated plate 3 is connected to the top of the panel 2. The perforated plate 3 and the through holes of the perforated plate 3 are connected to the air cavity 201. In use, the plate 2 with the air cavity 201 is slidably placed in the mounting groove 101 provided on the back plate 1. Then, the perforated plate 3 is removed from the opening of the mounting groove 101 and the bottom end face of the perforated plate 3 is abutted against the top end face of the plate 2 to fix the plate 2 in the mounting groove 101. The plate 2 and the back plate 1 are designed separately. On the one hand, it is convenient to install and remove the plate 2 to replace the plate 2 with air cavities 201 of different depths and to adjust the sound absorption frequency. On the other hand, it is not necessary to install and remove or replace the back plate 1. This not only improves the efficiency of installation and removal, but also avoids the waste of the back plate 1 and reduces the cost of use.

[0025] Reference Figure 3 and Figure 4 The perforated plate 3 has through slots 301 on both sides, with two to six sets of slots 301. Here, we prefer four sets, that is, two sets on each side, symmetrically distributed. An elastic retaining plate 302 is fixedly installed in the through slot 301. A retaining groove 103 is provided on both sides of the inner wall of the mounting groove 101, and the free end of the elastic retaining plate 302 is engaged with the retaining groove 103. In use, by fixing the elastic retaining plate 302 on the perforated plate 3 and engaging the retaining groove 103 in the mounting groove 101, the perforated plate 3 is fixed in the mounting groove 101. During disassembly, a flathead screwdriver or a plate is inserted into the through slot 301 to push the free end of the elastic retaining plate 302 away from the retaining groove 103, and the perforated plate 3 can be removed from the mounting groove 101. Disassembly is relatively convenient and helps to improve the use effect. Furthermore, after the perforated plate 3 is installed, its top surface is flush with the top surface of the mounting groove 101, which helps to improve the overall appearance and aesthetics. Bolts can also be used to fix the perforated plate 3 into the mounting groove 101.

[0026] Reference Figure 3 and Figure 4A support platform 102 is fixedly installed on the inner wall of the mounting groove 101, and fixing plates 202 are fixedly installed on all four sides of the plate 2. The top end face of the fixing plate 202 is flush with the top end face of the plate 2. The bottom of the fixing plate 202 abuts against the top of the support platform 102, and the bottom of the perforated plate 3 abuts against the top of the fixing plate 202. In use, by fixing the support platform 102 in the mounting groove 101 and fixing the fixing plates 202 on the outer walls of the plate 2, the fixing plates 202 are placed on the support platform 102, which can effectively support and limit the plate 2. Under the action of the perforated plate 3 and the support platform 102, the plate 2 is fixed in the mounting groove 101, improving the use effect.

[0027] Reference Figure 3 and Figure 4 A sound-absorbing pad 4 is laid between the perforated plate 3 and the plate body 2. The top and bottom of the sound-absorbing pad 4 abut against the perforated plate 3 and the plate body 2, respectively. The sound-absorbing pad 4 is made of polyurethane foam, fabric, mineral wool (mineral fiber), or cork, etc. When the frequency of the incident sound wave is consistent with the natural frequency of this system, the air in the perforated plate 3 vibrates violently, which enhances the absorption effect and produces an absorption peak, thus attenuating the sound energy. By setting the sound-absorbing pad 4 between the perforated plate 3 and the plate body 2, the width of the absorption peak can be widened, and the sound absorption effect can be improved.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A resonant sound absorbing panel comprising a back plate (1), characterized in that, It also includes a plate (2) with an air cavity (201), and a mounting groove (101) is provided in the back plate (1). The plate (2) is set in the mounting groove (101). A perforated plate (3) is detachably installed on the top of the mounting groove (101). The bottom of the perforated plate (3) abuts against the top of the plate (2), and the through hole of the perforated plate (3) is connected to the air cavity (201).

2. A resonant sound absorbing panel according to claim 1, wherein The perforated plate (3) has through grooves (301) on both sides, and an elastic card plate (302) is fixedly installed in the through groove (301). The mounting groove (101) has slots (103) on both sides of its inner wall, and the free end of the elastic card plate (302) is engaged with the slot (103).

3. A resonant sound-absorbing plate according to claim 2, characterized in that, The top end face of the perforated plate (3) is flush with the top end face of the mounting groove (101).

4. A resonant sound-absorbing plate according to claim 1, characterized in that, A support platform (102) is fixedly installed on the inner wall of the mounting groove (101), and a fixing plate (202) is fixedly installed on all four sides of the plate (2). The bottom of the fixing plate (202) abuts against the top of the support platform (102), and the bottom of the perforated plate (3) abuts against the top of the fixing plate (202).

5. A resonant sound-absorbing plate according to claim 1, characterized in that, A sound-absorbing pad (4) is laid between the perforated plate (3) and the plate body (2). The top and bottom of the sound-absorbing pad (4) abut against the perforated plate (3) and the plate body (2) respectively, and the material of the sound-absorbing pad (4) is polyurethane foam.

6. A resonant sound-absorbing plate according to claim 1, characterized in that, A stepped hole is provided at the bottom of the mounting groove (101), and a screw is provided in the mounting groove (101). The screw passes through the stepped hole and is threaded to the wall.

Images