Flexible membrane assembly and light sound insulation board applying same

Abstract

The utility model relates to a flexible membrane assembly and a light sound insulation board applying the flexible membrane assembly, the flexible membrane assembly comprises a first flexible membrane, a second flexible membrane and at least one mass block, the first flexible membrane and the second flexible membrane are stacked and connected with each other; limiting cavities which are in one-to-one correspondence with the mass blocks and are used for limiting the mass blocks are formed between the first flexible film and the second flexible film, and the mass blocks are arranged in the limiting cavities. According to the flexible membrane assembly, the limiting cavity for limiting the mass block is formed between the first flexible membrane and the second flexible membrane, it can be guaranteed that the mass block is not prone to falling off, the structural stability of the flexible membrane assembly is better, and the service life is longer. According to the light sound insulation board adopting the flexible membrane assembly, due to the fact that the structural stability of the flexible membrane assembly is good, the effective duration of the sound insulation effect of the light sound insulation board can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation boards, in particular to a flexible membrane component and a lightweight sound insulation board using the flexible membrane component. Background Art

[0002] Thin-film acoustic metamaterial insulation panels offer excellent low-frequency sound insulation performance due to their localized resonance. This overturns the "mass density law" of traditional insulation panels, making lightweight sound insulation technology feasible. This has become a research hotspot for many scholars in recent years. By placing a mass block on the surface of a flexible film, the resonant frequency can be adjusted, thereby increasing the width of the sound insulation band.

[0003] In practical applications, the mass block is typically a metal block bonded to one surface of the flexible membrane. Due to vibration, there's a risk of the metal block falling off after prolonged use, which in turn weakens the sound insulation effect. Furthermore, to prevent the metal block from falling off, a strong adhesive is often required, which is relatively expensive. Utility Model Content

[0004] The purpose of the utility model is to provide a flexible membrane component and a lightweight sound insulation board using the same, wherein the mass block is not easy to fall off and has a long service life.

[0005] To achieve the above-mentioned purpose, the present utility model discloses a flexible membrane assembly, which includes a first flexible membrane, a second flexible membrane and at least one mass block. The first flexible membrane and the second flexible membrane are stacked and connected to each other, and a limiting chamber corresponding to the mass block and used to limit the mass block is formed between the first flexible membrane and the second flexible membrane, and the mass block is placed in the limiting chamber.

[0006] Preferably, the first flexible film is provided with a first fitting area and at least one first molding area, and the first fitting area surrounds the periphery of the first molding area; the second flexible film is provided with a second fitting area and at least one second molding area, and the second fitting area surrounds the periphery of the second molding area; the first molding area and the second molding area correspond one to one and cooperate to form a limiting cavity, the first fitting area corresponds to the second fitting area, and a partial area or the entire area of ​​the first fitting area is connected to the second fitting area.

[0007] Preferably, a partial area or the entire area of ​​the first bonding area is bonded or hot-melt connected to the second bonding area.

[0008] Preferably, the first forming area and / or the second forming area is a concave structure.

[0009] Preferably, the mass block is a solid block; or, the mass block is composed of a plurality of filaments, strips or particles; or, the mass block is liquid.

[0010] Preferably, the mass block is a solid block, or the mass block is composed of a plurality of filaments, strips or particles, and the mass block is filled or bonded in the limiting chamber.

[0011] Preferably, the mass block is liquid, the limiting chamber is a closed chamber, and an injection channel corresponding to the limiting chamber is formed between the first flexible membrane and the second flexible membrane. One end of the injection channel is connected to the limiting chamber, and the other end of the injection channel is suspended.

[0012] Preferably, the mass block is a liquid with a density of not less than 1.5 kg / m³; the mass block is mineral oil or inorganic or organic matter.

[0013] Preferably, the material of the first flexible film and the second flexible film is one of polyimide, polyethylene, polyvinyl chloride, polypropylene, silicone rubber, PEI, PET, PAR, PPS, and PEEK.

[0014] The utility model also discloses a lightweight sound insulation board, which includes a frame and at least one of the above-mentioned flexible membrane components. The frame is provided with hollow holes corresponding one-to-one to the mass blocks, and the mass blocks are located at the center of the hollow holes. The first flexible membrane and / or the second flexible membrane are connected to the frame; the frame is made of a hard material or a flexible material.

[0015] The utility model has the following beneficial effects:

[0016] This utility model forms a limiting cavity for the mass between the first and second flexible membranes, ensuring that the mass is not easily dislodged. This improves the structural stability of the flexible membrane assembly and extends its service life. Lightweight sound insulation panels employing this flexible membrane assembly also ensure a long-lasting sound insulation effect due to its structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of Example 1.

[0018] Figure 2 This is a schematic diagram of the decomposition of Example 1.

[0019] Figure 3 It is a cross-sectional view of embodiment 1.

[0020] Figure 4 This is a schematic diagram of Example 3.

[0021] Figure 5 This is a schematic diagram of Example 5.

[0022] Figure 6 This is a cross-sectional view of Example 5.

[0023] Figure 7 This is a cross-sectional view of Example 6.

[0024] Figure 8 Schematic diagram of the first connection method between the frame and the flexible membrane assembly in Example 7.

[0025] Figure 9 This is a schematic diagram of the second connection method between the frame and the flexible membrane assembly in Example 7.

[0026] Figure 10 Schematic diagram of the first combination of the frame and the flexible membrane assembly in Example 7.

[0027] Figure 11 This is a schematic diagram of the second combination of the frame and the flexible membrane assembly of Example 7.

[0028] Figure 12 Schematic diagram of the third combination of the frame and the flexible membrane assembly of Example 7.

[0029] Figure 13 Schematic diagram of the fourth combination of the frame and the flexible membrane assembly of Example 7.

[0030] Note: For ease of viewing, the first flexible membrane and the second flexible membrane in the above drawings are thickened.

[0031] Description of main components symbols:

[0032] First flexible film 11, first laminating area 111, first molding area 112, second flexible film 12, second laminating area 121, second molding area 122, limiting chamber 13, injection channel 14, mass block 15, connection node 16;

[0033] Frame 20 , first frame body 21 , second frame body 22 , hollow hole 23 . DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0035] Example 1

[0036] like Figures 1 to 3As shown, this embodiment discloses a flexible membrane assembly comprising a first flexible membrane 11, a second flexible membrane 12, and at least one mass 15. The first and second flexible membranes 11, 12 are thin films made of any of polyimide, polyethylene, polyvinyl chloride, polypropylene, silicone rubber, PEI, PET, PAR, PPS, and PEEK, while the mass 15 is a solid block, such as a metal block. The first and second flexible membranes 11, 12 are stacked and interconnected, and a limiting chamber 13 is formed between the first and second flexible membranes 11, 12, corresponding one-to-one with the mass 15 and used to limit the mass 15. The mass 15 is positioned within the limiting chamber 13.

[0037] Taking the flexible membrane assembly with only one mass block 15 as an example for specific description, a first bonding area 111 and at least one first molding area 112 are provided on the first flexible membrane 11, and the first bonding area 111 surrounds the outer periphery of the first molding area 112. A second bonding area 121 and at least one second molding area 122 are provided on the second flexible membrane 12, and the second bonding area 121 surrounds the outer periphery of the second molding area 122. The first molding area 112 and the second molding area 122 correspond one-to-one and cooperate to form a limiting cavity 13. The first bonding area 111 corresponds to the second bonding area 121, and the entire area of ​​the first bonding area 111 is bonded or hot-melted to the second bonding area 121. By connecting the first bonding area 111 and the second bonding area 121, the limiting cavity 13 can be formed. During assembly, the first flexible membrane 11 can be laid flat, and then the mass blocks 15 can be placed in each first molding area 112. Then, the second flexible membrane 12 can be covered on the first flexible membrane 11, and then the bonding areas can be hot-melted. The formed limiting chamber 13 can effectively limit the mass block 15, and the mass block 15 is not easy to fall off.

[0038] Example 2

[0039] This embodiment differs from the first embodiment in that the mass block 15 is also bonded to the limiting chamber 13, i.e., one surface of the mass block 15 is bonded to the first flexible membrane 11, and the other surface of the mass block 15 is bonded to the second flexible membrane 12. This arrangement enhances the positional stability of the mass block 15 and makes it less likely to fall off.

[0040] Example 3

[0041] The difference between this embodiment and any of the above embodiments is that only a local area of ​​the first bonding area 111 is bonded or hot-melt-connected to the second bonding area 121. For example, the connection nodes 16 continuously surround the limiting cavity 13, as shown in the figure. In another example, the connection nodes 16 intermittently surround the limiting cavity 13. This arrangement can reduce the number of connection nodes 16 between the first flexible film 11 and the second flexible film 12, thereby improving processing efficiency.

[0042] Example 4

[0043] This embodiment differs from any of the above embodiments in that mass 15 is composed of a plurality of filaments, strips, or particles. The filaments can be metal wires, the strips can be metal bars, and the particles can be metal pellets. This configuration of mass 15 can be waste or scrap from processing, allowing for recycling and saving material costs. Furthermore, it provides more options. The filaments, strips, or particles can be bonded together to avoid disorganization.

[0044] Example 5

[0045] like Figures 5-6 As shown, the difference between this embodiment and the first embodiment is that the mass block 15 is liquid. In order to prevent liquid loss, the limiting chamber 13 is required to be a closed chamber. In addition, an injection channel 14 corresponding to the limiting chamber 13 is formed between the first flexible membrane 11 and the second flexible membrane 12. One end of the injection channel 14 is connected to the limiting chamber 13, and the other end of the injection channel 14 is suspended (i.e., connected to the outside of the flexible membrane). When assembling the flexible membrane assembly, the first flexible membrane 11 and the second flexible membrane 12 are first connected, and then liquid is injected from the suspended end of the injection channel 14 so that the liquid fills the limiting chamber 13. Then, the injection channel 14 is blocked. This embodiment uses liquid as the mass block 15. The wear between it and the flexible membrane is almost zero, and it can also fill all parts of the limiting chamber 13, providing a new option. In addition, the resonance frequency of different liquids is different, providing more choices.

[0046] In addition, in order to prevent the liquid from volatilizing, the density of the liquid used as the mass block 15 is required to be no less than 1.5 kg / m³. The liquid can also be mineral oil, inorganic matter, or organic matter.

[0047] Example 6

[0048] like Figure 7 As shown, the difference between this embodiment and the fifth embodiment is that the first molding area 112 and / or the second molding area 122 are in a concave structure. In this case, the first molding area 112 and the second molding area 122 are both in a concave structure for display, see the figure. After such a setting, the space of the limiting chamber 13 can be expanded. When the same liquid is used, the weight of the mass block 15 of this embodiment can be larger than that of the fifth embodiment; and when the weight of the mass block 15 is required to be constant, a liquid with a lower density can be used in this embodiment compared with the fifth embodiment. Of course, when the mass block 15 is a solid block, or when the mass block 15 is composed of a number of filaments, strips or particles, the first molding area 112 and / or the second molding area 122 can also be in a concave structure. The formation of the concave structure can be achieved by locally stamping a flexible film.

[0049] Example 7

[0050] This embodiment discloses a lightweight sound insulation board, which includes a frame 20 and a flexible membrane assembly as described in any of the above embodiments. The frame 20 is provided with hollow holes 23 corresponding one to one with the mass blocks 15, and the mass blocks 15 are located at the center of the hollow holes 23. The first flexible membrane 11 and / or the second flexible membrane 12 are connected to the frame 20. Generally speaking, the hollow holes 23 are preferably arranged in an array on the frame 20. For example, the flexible membrane assembly can be arranged on one side of the frame 20, and the first flexible membrane 11 can be bonded and fixed to the frame 20. This is the first connection method. Figure 8 As shown; for example, the frame 20 is divided into a first frame 21 and a second frame 22, the flexible membrane assembly is placed between the first frame 21 and the second frame 22, the first frame 21 and the second frame 22 simultaneously clamp and fix the first flexible membrane 11 and the second flexible membrane 12, this is the second connection method, such as Figure 9 The frame 20 and the flexible membrane assembly can be matched in various ways. For example, a frame 20 has only one hollow hole 23, and corresponds to a set of flexible membrane assemblies with only one mass block 15. This is a matching method 1. Figure 10 For example, a frame 20 is provided with 16 hollow holes 23 (arranged in a 4*4 array), and the frame 20 corresponds to a set of flexible membrane components, and the set of flexible membrane components is correspondingly provided with 16 mass blocks 15 (arranged in a 4*4 array). This is the second matching method. Figure 11 Alternatively, the frame 20 corresponds to 16 sets of flexible membrane components, each set of flexible membrane components has only one mass block 15, this is the collocation method three, such as Figure 12 or, the frame 20 corresponds to four sets of flexible membrane components, each Tongan flexible membrane component corresponding to the set of four mass blocks 15, this is the collocation mode four, such as Figure 13 shown.

[0051] In this embodiment, the frame 20 can be supported by a hard material, that is, the frame 20 is a hard frame and cannot be bent. As an alternative, the frame 20 can also be made of a flexible material, that is, the frame 20 can be bent and deformed to a certain extent to adapt to complex installation occasions.

[0052] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A flexible membrane assembly, characterized in that: The invention comprises a first flexible membrane, a second flexible membrane and at least one mass block, wherein the first flexible membrane and the second flexible membrane are stacked and connected to each other, and a limiting cavity corresponding to each mass block and used to limit the mass block is formed between the first flexible membrane and the second flexible membrane, and the mass block is placed in the limiting cavity.

2. The flexible membrane assembly according to claim 1, characterized in that: The first flexible film is provided with a first bonding area and at least one first molding area, and the first bonding area surrounds the outer periphery of the first molding area; the second flexible film is provided with a second bonding area and at least one second molding area, and the second bonding area surrounds the outer periphery of the second molding area; the first molding area and the second molding area correspond one to one and cooperate to form a limiting cavity, the first bonding area corresponds to the second bonding area, and a partial area or the entire area of ​​the first bonding area is connected to the second bonding area.

3. The flexible membrane assembly according to claim 2, characterized in that: A partial area or the entire area of ​​the first bonding area is bonded or hot-melt connected to the second bonding area.

4. The flexible membrane assembly according to claim 2, characterized in that: The first forming area and / or the second forming area is in a concave structure.

5. The flexible membrane assembly according to claim 1, characterized in that: The mass block is a solid block; or, the mass block is composed of a plurality of filaments, strips or particles; or, the mass block is liquid.

6. The flexible membrane assembly according to claim 5, characterized in that: The mass block is a solid block, or is composed of a plurality of filaments, strips or particles, and the mass block is filled or bonded in the limiting cavity.

7. The flexible membrane assembly according to claim 5, characterized in that: The mass block is liquid, the limiting chamber is a closed chamber, and an injection channel corresponding to the limiting chamber is formed between the first flexible membrane and the second flexible membrane. One end of the injection channel is connected to the limiting chamber, and the other end of the injection channel is suspended.

8. The flexible membrane assembly according to claim 5, characterized in that: The mass block is a liquid with a density of not less than 1.5 kg / m³; the mass block is mineral oil or inorganic or organic matter.

9. The flexible membrane assembly according to claim 1, characterized in that: The material of the first flexible film and the second flexible film is one of polyimide, polyethylene, polyvinyl chloride, polypropylene, silicone rubber, PEI, PET, PAR, PPS, and PEEK.

10. A lightweight sound insulation board, characterized by: It comprises a frame and at least one flexible membrane assembly according to any one of claims 1 to 9, wherein the frame is provided with hollow holes corresponding one-to-one to the mass blocks, and the mass blocks are located at the center of the hollow holes, and the first flexible membrane and / or the second flexible membrane are connected to the frame; the frame is made of a hard material or a flexible material.

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