Sound absorption material bag, loudspeaker and electronic equipment

Abstract

The utility model provides a sound absorption material bag, loudspeaker and electronic equipment wherein the sound absorption material bag comprises a bag body for holding sound absorption material, the material of the bag body is flexible mesh cloth, and the acoustic resistance rate of the flexible mesh cloth is less than or equal to 30. The bag body of the sound absorption material bag provided by the utility model is made of the flexible mesh cloth, namely, the bag body is of the porous breathable mesh structure, so that the height of the sound absorption material bag can be maximized, and the position of the sound absorption material bag in the rear cavity of the loudspeaker is not limited, so that the space utilization rate of the rear cavity of the loudspeaker is improved, and the sound absorption effect is improved. And the sound absorption efficiency of the sound absorption material is also improved.

Description

Technical Field

[0001] This utility model relates to a sound-absorbing material package, a loudspeaker, and electronic equipment, belonging to the field of electroacoustic product technology. Background Technology

[0002] There are many ways to fill sound-absorbing particles into speaker cabinets. It can be done by filling cans entirely or by creating Blister powder bags, which are bags of sound-absorbing particle material. Currently used Blister powder bags typically consist of a bag containing the sound-absorbing particles, a wool paper or mesh covering the bag, and adhesive backing. After the sound-absorbing particles are made into Blister powder bags, they are placed inside the speaker cabinet to improve low-frequency performance. These sound-absorbing particle material bags are simple to assemble. Once formed, the powder bag can be directly glued to the inside of the cabinet as a component, or it can be fixed inside the speaker cabinet using hot-melt or adhesive methods, or it can be freely placed inside the speaker cabinet. However, because the current Blister powder packs are made of non-breathable materials (such as PET and PEN), when placing them inside the speaker cabinet, the height of the powder pack must be lower than the total height of the speaker cabinet to allow for airflow between the top of the wool paper or mesh and the inside of the speaker cabinet. This significantly limits the product's height. Figure 4 As shown: Dimension A must be ≥0.5mm, otherwise airflow cannot pass through the sound-absorbing material; Dimension B must be ≥0.15mm.

[0003] Therefore, providing a novel sound-absorbing material package, loudspeaker, and electronic device has become a pressing technical problem that needs to be solved in this field. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings and deficiencies, the purpose of this utility model is to provide a sound-absorbing material package, a loudspeaker, and an electronic device.

[0005] To achieve the above objectives, on the one hand, this utility model provides a sound-absorbing material package, including a package body for holding the sound-absorbing material, wherein the material of the package body is a flexible mesh fabric, and the acoustic resistivity of the flexible mesh fabric is less than or equal to 30.

[0006] In one specific embodiment of the sound-absorbing material package described above, the acoustic impedance of the flexible mesh fabric is 15-25.

[0007] This invention does not impose specific requirements on the shape of the package, which can be reasonably selected as needed. In some embodiments of this invention, the package can maintain the same shape as the rear cavity of the speaker in at least one dimension. Additionally, in some embodiments of this invention, the sound-absorbing material package is obtained by molding a flexible mesh fabric.

[0008] As a specific embodiment of the sound-absorbing material package described above in this utility model, the flexible mesh fabric is made of materials such as cotton yarn, silk, Conex, polyurethane mesh, nylon mesh, polyethylene, or polyimide fiber. The materials used in this utility model, such as cotton yarn, silk, Conex, polyurethane mesh, nylon mesh, polyethylene, and polyimide fiber, are all existing conventional materials and can be commercially available. For example, Conex is a meta-aramid fiber produced by Teijin Corporation of Japan.

[0009] In one specific embodiment of the sound-absorbing material package described above in this utility model, the flexible mesh fabric is made of polyurethane mesh or the like.

[0010] As a specific embodiment of the sound-absorbing material package described above in this utility model, the package body is provided with an opening, and a shielding layer is provided at the opening.

[0011] In the sound-absorbing material package described above in this utility model, the material of the package body is flexible mesh fabric, that is, the package body is a porous and breathable mesh structure. Therefore, this utility model does not need to restrict whether the material of the shielding layer is breathable.

[0012] In one specific embodiment of the sound-absorbing material package described above in this utility model, the material of the shielding layer is either breathable or non-breathable.

[0013] As a specific embodiment of the sound-absorbing material package described above in this utility model, the breathable material includes wool paper, mesh fabric or metal mesh, etc.

[0014] And / or the non-breathable material is a plastic material or a metal material, wherein the plastic material includes PET, PEN, PC, PPA or glass fiber reinforced PPA, etc.

[0015] The metal mesh can be made of stainless steel, aluminum, copper, or iron. The breathable material covering layer can be fixed to the opening of the bag body by means of adhesive, heat fusion, or heat riveting.

[0016] The metal material can be stainless steel, aluminum, copper, or iron. The non-breathable covering layer can also be fixed to the opening of the bag by means of adhesive, heat fusion, or heat riveting.

[0017] As a specific embodiment of the sound-absorbing material package described above in this utility model, the sound-absorbing material (or sound-absorbing material) includes sound-absorbing material particles, sound-absorbing material sheets, or sound-absorbing material blocks, etc.

[0018] On the other hand, this utility model also provides a loudspeaker, including one or more acoustic sensors and one or more housings, wherein the one or more acoustic sensors and the one or more housings are combined to form a loudspeaker rear cavity, wherein the sound-absorbing material package described above is directly assembled into the loudspeaker rear cavity. Since the sound-absorbing material package is made of flexible mesh fabric, which has a certain shape but is not absolutely rigid, and the loudspeaker rear cavity does not require complete filling, the sound-absorbing material package described above can be directly assembled into the loudspeaker rear cavity without the need for special methods such as adhesive layers for fixation.

[0019] In one specific embodiment of the loudspeaker described above in this utility model, the loudspeaker is a small loudspeaker.

[0020] In another aspect, this utility model also provides an electronic device, wherein the speaker of the electronic device is the speaker described above.

[0021] As a specific embodiment of the electronic device described above in this utility model, the electronic device includes smartphones, TWS earphones, headphones, smart glasses, smartwatches, VR devices, AR devices, tablet computers, thin and light laptops, portable speakers, televisions, or electric vehicles, etc.

[0022] Compared with the prior art, the beneficial technical effects that this utility model can achieve include:

[0023] The sound-absorbing material package provided by this utility model has a package body made of flexible mesh fabric with a sound resistance of less than or equal to 30, meaning the package body has a porous, breathable mesh structure. This utility model uses a flexible mesh fabric with a sound resistance of less than or equal to 30 as the package body material. This flexible mesh fabric with a sound resistance of less than or equal to 30 has excellent rapid air permeability, ensuring the exchange and interaction between the sound-absorbing material (such as sound-absorbing particles) contained inside the package and the air in the rear cavity outside the package. Furthermore, due to the low sound resistance of the package body material, the pores of the sound-absorbing material can fully interact with the sound waves in the air, allowing the sound waves in the rear cavity to be quickly eliminated.

[0024] In addition, this utility model uses a flexible mesh fabric with a porous and breathable mesh structure as the body material of the sound-absorbing material package. On the one hand, this allows the height of the sound-absorbing material package to be maximized, and the position of the sound-absorbing material package in the rear cavity of the speaker is not restricted. This improves the space utilization of the rear cavity of the speaker and also improves the sound absorption efficiency of the sound-absorbing material. On the other hand, the flexible mesh fabric can be bent to achieve a certain degree of shaping. Finally, since the material of the package itself is not very rigid and has the characteristic of flexibility, the sound-absorbing material will not break due to impact with the package when it moves, thereby avoiding the degradation of the performance of the sound-absorbing material and reducing the noise caused by the direct impact between the sound-absorbing material and the metal shell. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a bottom view of the sound-absorbing material package provided in Embodiment 1 of this utility model.

[0027] Figure 2 This is a top view of the sound-absorbing material package provided in Embodiment 1 of this utility model.

[0028] Figure 3 An exploded view of the sound-absorbing material package provided in Embodiment 1 of this utility model.

[0029] Figure 4 This is a schematic diagram of the sound-absorbing material provided in Comparative Example 1 packaged and placed in the rear cavity of a loudspeaker.

[0030] Figure 5 This is a schematic diagram of the sound-absorbing material packaged and placed in the rear cavity of a loudspeaker according to Embodiment 1 of this utility model.

[0031] Explanation of main icon numbers:

[0032] 001, Shielding layer;

[0033] 002. Sound-absorbing materials;

[0034] 003, Package;

[0035] 100. Sound-absorbing material package. Detailed Implementation

[0036] It should be noted that the term "comprising" and any variations thereof in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method / process, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods / processes, products, or devices.

[0037] In this utility model, the terms "upper," "lower," "inner," "outer," "middle," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to have a specific orientation, or to be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0038] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0039] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "set up," "connected," or "linked" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The "range" disclosed in this utility model is given in the form of a lower limit and an upper limit. There can be one or more lower limits and one or more upper limits, respectively. A given range is defined by selecting a lower limit and an upper limit. The selected lower and upper limits define the boundaries of the particular range. All ranges defined in this way are composable, meaning that any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for specific parameters, it is also expected that ranges of 60-110 and 80-120 are also expected. Furthermore, if the listed minimum range values ​​are 1 and 2, and the listed maximum range values ​​are 3, 4, and 5, then the following ranges are all expected: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5.

[0041] In this invention, unless otherwise specified, the numerical range "ab" represents an abbreviation of any combination of real numbers from a to b, where a and b are both real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" have been listed in this invention, and "0-5" is simply an abbreviation of these numerical combinations.

[0042] Unless otherwise specified, all embodiments and preferred embodiments mentioned in this utility model can be combined with each other to form new technical solutions.

[0043] Unless otherwise specified, all technical features and preferred features mentioned in this utility model can be combined with each other to form new technical solutions.

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying tables, drawings, and embodiments. The embodiments described below are some, but not all, embodiments of this utility model, and are only used to illustrate the present utility model, and should not be considered as limiting the scope of the present utility model. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0045] Example 1

[0046] This embodiment provides a sound-absorbing material package 100, the bottom view, top view and exploded view of which are shown below. Figures 1-3 As shown, from Figures 1-3 As can be seen from the image, the sound-absorbing material package 100 includes:

[0047] The package 003 and the shielding layer 001 are used to hold the sound-absorbing material 002. The package 003 is box-shaped and has an opening. The material of the package 003 is flexible mesh fabric, and the shielding layer 001 is disposed at the opening.

[0048] The material of the shielding layer 001 is wool paper;

[0049] The flexible mesh is a polyurethane mesh with an acoustic resistivity of 30.

[0050] The sound-absorbing material 002 is a granular sound-absorbing material.

[0051] Example 2

[0052] This embodiment provides a sound-absorbing material package 100, the bottom view, top view and exploded view of which are shown below. Figures 1-3 As shown, from Figures 1-3 As can be seen from the image, the sound-absorbing material package 100 includes:

[0053] The package 003 and the shielding layer 001 are used to hold the sound-absorbing material 002. The package 003 is box-shaped and has an opening. The material of the package 003 is flexible mesh fabric, and the shielding layer 001 is disposed at the opening.

[0054] The shielding layer 001 is made of PET.

[0055] The flexible mesh is a polyethylene mesh with an acoustic resistivity of 25.

[0056] The sound-absorbing material 002 is a layered sound-absorbing material, i.e., a sheet of sound-absorbing material.

[0057] Example 3

[0058] This embodiment provides a sound-absorbing material package 100, the bottom view, top view and exploded view of which are shown below. Figures 1-3 As shown, from Figures 1-3 As can be seen from the image, the sound-absorbing material package 100 includes:

[0059] The package 003 and the shielding layer 001 are used to hold the sound-absorbing material 002. The package 003 is box-shaped and has an opening. The material of the package 003 is flexible mesh fabric, and the shielding layer 001 is disposed at the opening.

[0060] The shielding layer 001 is made of PET.

[0061] The flexible mesh is a polyimide mesh with an acoustic impedance of 15.

[0062] The sound-absorbing material 002 is a block-shaped sound-absorbing material.

[0063] Example 4

[0064] This embodiment provides a sound-absorbing material package 100, the bottom view, top view and exploded view of which are shown below. Figures 1-3 As shown, from Figures 1-3 As can be seen from the image, the sound-absorbing material package 100 includes:

[0065] The package 003 and the shielding layer 001 are used to hold the sound-absorbing material 002. The package 003 is box-shaped and has an opening. The material of the package 003 is flexible mesh fabric, and the shielding layer 001 is disposed at the opening.

[0066] The shielding layer 001 is made of PPA+glass fiber plastic material, that is, glass fiber reinforced PPA plastic material;

[0067] The flexible mesh fabric is a Conex mesh fabric with an acoustic impedance of 15.

[0068] The sound-absorbing material 002 is a sound-absorbing block.

[0069] Comparative Example 1

[0070] This comparative example provides a sound-absorbing material package 100, whose structure is similar to the sound-absorbing material package provided in Example 1, including: a package body 003 for holding sound-absorbing material 002 and a shielding layer 001. The package body 003 is box-shaped and has an opening. The material of the package body 003 is flexible mesh fabric, and the shielding layer 001 is disposed at the opening.

[0071] The material of the package 003 is a polyurethane mesh fabric with an acoustic impedance of 42.

[0072] The shielding layer 001 is a mesh fabric;

[0073] The sound-absorbing material 002 is a granular sound-absorbing material.

[0074] The sound-absorbing material packages provided in Embodiment 1 and Comparative Example 1 of this utility model are respectively assembled into the rear cavity of the speaker, such as in a 3411box, as shown in the schematic diagrams below. Figure 5 and Figure 4 As shown. From Figure 4 As can be seen from the example, the sound-absorbing material package provided in Comparative Example 1 is made of polyurethane mesh fabric with a sound resistance of 42. The high sound resistance of this material significantly reduces its rapid air permeability. In this case, dimension A must be ≥ 0.5 mm. If dimension A is too small, it can easily obstruct airflow, thus affecting the sound absorption efficiency of the material. Figure 5 As shown, since the sound-absorbing material package provided in Embodiment 1 of this utility model has a porous and breathable mesh as its body, specifically a polyurethane mesh fabric with a sound resistance of 30, which is a breathable material, the height of the sound-absorbing material package can be maximized, the amount of sound-absorbing material contained in the package is also increased, and the position of the sound-absorbing material package in the rear cavity of the speaker is not restricted. Thus, while improving the space utilization of the rear cavity of the speaker, the sound absorption efficiency of the sound-absorbing material is also improved.

[0075] Test Example 1

[0076] In this test example, the sound-absorbing material packages provided by Comparative Example 1 and Embodiments 1-3 of this utility model were first assembled into the rear cavity of the loudspeaker, such as the 3411box. Then, the SPL (Sound Pressure Level) of the 3411box and the 3411box equipped with the sound-absorbing material packages provided by Comparative Example 1 and Embodiments 1-3 of this utility model were measured using a SoundCheck 15.0 test device with a 2.83V, 5cm free field test method. The experimental results are shown in Table 1 below. The 3411box and the 3411box equipped with the sound-absorbing material packages provided by Comparative Example 1 and Embodiments 1-3 of this utility model are respectively labeled as b0, b1, b2, b3 and b4.

[0077] Table 1

[0078]

[0079] As can be seen from Table 1, since the sound-absorbing material package provided in Comparative Example 1 is made of polyurethane mesh with a sound resistance of 42, its rapid air permeability is significantly reduced. At this time, the A dimension is required to be ≥0.5mm. If the A dimension is small, it is easy to cause airflow obstruction. This structural limitation makes it difficult to maximize the amount of sound-absorbing material in the sound-absorbing material package provided in Comparative Example 1. In contrast, the sound-absorbing material packages provided in Embodiments 1-3 of this utility model have porous breathable mesh as their package body. Specifically, they are polyurethane mesh with a sound resistance of 30, polyethylene mesh with a sound resistance of 25, and polyimide mesh with a sound resistance of 15, respectively. They are all breathable materials with better air permeability, which allows the height of the sound-absorbing material package to be maximized and the amount of sound-absorbing material contained in the package to be maximized, thereby resulting in better sound absorption efficiency.

[0080] As can also be seen from Table 1, compared with the sound-absorbing material package provided in Comparative Example 1, the sound-absorbing material packages provided in Embodiments 1-3 of this utility model have better SPL low-frequency extension effect and better mid-frequency elasticity.

[0081] Furthermore, the sound-absorbing material packages provided in Embodiments 1-3 of this utility model not only extend the SPL at low frequencies, but also significantly reduce the F0. The F0 data for b0, b1, b2, b3 and b4 are shown in Table 2 below.

[0082] Table 2

[0083] F0[Hz] b0 522.05 b1 445.75 b2 422.38 b3 413.91 b4 414.26

[0084] As can be seen from Table 2, for the 3411box without any sound-absorbing material package, its F0 is 522.05Hz. After the 3411box is equipped with the sound-absorbing material package provided in Comparative Example 1, its F0 is reduced by about 76Hz. After the 3411box is equipped with the sound-absorbing material package provided in Embodiments 1-3 of this utility model, as the amount of sound-absorbing material increases, its F0 can be further reduced by about 23Hz, 32Hz and 31Hz respectively on the basis of b1.

[0085] The main difference between the sound-absorbing material package provided in Example 4 and that provided in Example 3 lies in the material of the flexible mesh fabric. Example 3 uses polyimide mesh fabric, while Example 4 uses Conex mesh fabric. However, the acoustic resistivity of the flexible mesh fabric used in both examples is the same, which is 15. Under the premise that the material of the flexible mesh fabric changes but its acoustic resistivity remains the same and the acoustic performance testing conditions are the same, the acoustic performance of the sound-absorbing material package provided in Example 4 is similar to that of the sound-absorbing material package provided in Example 3.

[0086] In summary, the sound-absorbing material package provided in this embodiment is made of flexible mesh fabric, meaning it has a porous, breathable mesh structure. This maximizes the height of the sound-absorbing material package and allows for unrestricted placement within the speaker's rear cavity. This improves both the space utilization of the rear cavity and the sound absorption efficiency of the material. Furthermore, the flexible nature of the package material prevents the sound-absorbing material from breaking upon impact during movement, thus avoiding any degradation in its performance.

[0087] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of the utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model patent should still fall within the scope of this patent.

Claims

1. A sound-absorbing material package, comprising a package body for containing the sound-absorbing material, characterized in that, The package is made of flexible mesh fabric, and the acoustic resistivity of the flexible mesh fabric is less than or equal to 30.

2. The sound-absorbing material package according to claim 1, characterized in that, The acoustic impedance of the flexible mesh is 15-25.

3. The sound-absorbing material package according to claim 1 or 2, characterized in that, The flexible mesh fabric is made of materials including cotton yarn, silk, Conex, polyurethane mesh, nylon mesh, polyethylene, or polyimide fiber.

4. The sound-absorbing material package according to claim 3, characterized in that, The flexible mesh fabric is made of polyurethane mesh.

5. The sound-absorbing material package according to any one of claims 1-2, 4, characterized in that, The package has an opening, and a shielding layer is provided at the opening.

6. The sound-absorbing material package according to claim 5, characterized in that, The shielding layer is made of either a breathable or non-breathable material.

7. The sound-absorbing material package according to claim 6, characterized in that, The breathable material includes wool paper, mesh fabric, or metal mesh; And / or the non-breathable material is a plastic material or a metal material, wherein the plastic material includes PET, PEN, PC, PPA or glass fiber reinforced PPA.

8. The sound-absorbing material package according to any one of claims 1-2, 4, characterized in that, The sound-absorbing material includes sound-absorbing material particles, sound-absorbing material sheets, or sound-absorbing material blocks.

9. A loudspeaker, comprising one or more acoustic sensors and one or more housings, wherein the one or more acoustic sensors and the one or more housings are combined to form a rear cavity of the loudspeaker, characterized in that, The sound-absorbing material package according to any one of claims 1-8 is directly assembled into the rear cavity of the loudspeaker.

10. The loudspeaker according to claim 9, characterized in that, The speaker is a small speaker.

11. An electronic device, characterized in that, The speaker of the electronic device is the speaker as described in claim 9 or 10.

12. The electronic device according to claim 11, characterized in that, The electronic devices include smartphones, TWS earphones, headphones, smart glasses, smartwatches, VR devices, AR devices, tablets, thin and light laptops, portable speakers, televisions, or electric vehicles.

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