Acoustic enhancement particle layer structure in loudspeaker and loudspeaker

Abstract

The present application provides an acoustic enhancement particle layer structure in a loudspeaker and a loudspeaker. The acoustic enhancement particle layer structure is provided in an acoustic cavity which is defined by at least a housing of the loudspeaker and a loudspeaker unit fixed on the housing. The acoustic enhancement particle layer structure in the loudspeaker comprises: a first bonding layer, the first bonding layer being arranged on the top wall of the acoustic cavity opposite to the loudspeaker unit so as to form, on the top wall of the acoustic cavity, a bonding top surface opposite to the loudspeaker unit; and a first particle layer formed by a plurality of acoustic enhancement particles, the first particle layer being bonded to the bonding top surface. The acoustic enhancement particle layer structure of the present application is used for replacing powder sheets in loudspeakers, solving the problem that the powder sheets cannot well adapt to the shapes of three-dimensional spaces in the loudspeakers.

Description

Acoustic enhancement particle layer structure in loudspeaker and loudspeaker

[0001] Related applications

[0002] This application claims priority to Chinese Patent Application No. 202421845776.9, filed on July 31, 2024, and incorporates by reference the entire disclosure of the aforementioned patent application as part of the present application. TECHNICAL FIELD

[0003] The present application relates to the technical field of loudspeakers, and in particular to an acoustic enhancement particle layer structure in a loudspeaker and a loudspeaker. BACKGROUND

[0004] In today's development of consumer electronics, the pursuit of thinness of electronic devices has gradually increased, thereby challenging the internal loudspeaker components.

[0005] Due to the constraints of the loudspeaker shape conditions and the requirements for acoustic performance, thin acoustic enhancement materials such as thin acoustic cotton and sheet-shaped acoustic enhancement powder sheets are usually used in the loudspeaker components.

[0006] The acoustic enhancement capability of acoustic cotton is much worse than that of conventional acoustic enhancement particles and powder sheets, so in the face of the above thinning trend or when the rear cavity space structure of the loudspeaker is not suitable, the existing solution will be more inclined to use powder sheets to increase the acoustic performance of the loudspeaker.

[0007] However, the powder sheet also has the following problems: 1. The existing powder sheet can be cut and shaped in the XY direction, but it cannot well adapt to the Z direction change, especially the bottom of the powder sheet needs to be a flat surface, otherwise it cannot be used if it is a folded surface or a curved surface; 2. It has high requirements for air circulation in actual application scenarios. SUMMARY

[0008] The purpose of the present application is to provide an acoustic enhancement particle layer structure in a loudspeaker and a loudspeaker for replacing the powder sheet arrangement in the loudspeaker to solve the problem that the powder sheet cannot well adapt to the three-dimensional space shape in the loudspeaker.

[0009] The technical purpose of the present application is mainly achieved by the following technical solutions;

[0010] In one aspect, the present application provides a sound-acoustic enhancing particle layer structure in a speaker, which is arranged in a sound cavity enclosed by at least a housing of the speaker and a speaker unit fixed on the housing, the sound-acoustic enhancing particle layer structure in the speaker comprising: a first adhesive layer arranged on a top wall of the sound cavity opposite to the speaker unit to form an adhesive top surface on the top wall of the sound cavity opposite to the speaker unit; a first particle layer formed by a plurality of sound-acoustic enhancing particles, the first particle layer being adhered to the adhesive top surface.

[0011] In one preferred embodiment of the present application, the adhesive top surface comprises a first adhesive surface and a second adhesive surface distributed in a stepped manner, the first adhesive surface and the second adhesive surface being parallel planes, and the first adhesive surface being opposite to the speaker unit.

[0012] In one preferred embodiment of the present application, the adhesive top surface comprises a first adhesive surface and a second adhesive surface connected to each other, the first adhesive surface being a plane, and the second adhesive surface being a curved surface, and the first adhesive surface being opposite to the speaker unit.

[0013] In one preferred embodiment of the present application, the sound-acoustic enhancing particle layer structure in the speaker further comprises: a second adhesive layer arranged on a bottom wall of the sound cavity adjacent to the speaker unit to form an adhesive bottom surface on the bottom wall of the sound cavity; and a second particle layer formed by a plurality of sound-acoustic enhancing particles, the second particle layer being adhered to the adhesive bottom surface.

[0014] In one preferred embodiment of the present application, the particle size of the sound-acoustic enhancing particles in the second particle layer is different from the particle size of the sound-acoustic enhancing particles in the first particle layer.

[0015] In one preferred embodiment of the present application, the sound-acoustic enhancing particle layer structure in the speaker further comprises: a third adhesive layer arranged on a side wall of the sound cavity perpendicular to the top wall to form an adhesive side surface on the side wall of the sound cavity opposite to the speaker unit; and a third particle layer formed by a plurality of sound-acoustic enhancing particles, the third particle layer being adhered to the adhesive side surface.

[0016] In one preferred embodiment of the present application, the adhesive side surface has a third adhesive surface and a fourth adhesive surface distributed in a stepped manner, the third adhesive surface and the fourth adhesive surface being parallel planes.

[0017] In one preferred embodiment of the present application, the particle size of the sound-acoustic enhancing particles in the third particle layer is different from the particle size of the sound-acoustic enhancing particles in the first particle layer.

[0018] In a preferred embodiment of the present application, the thickness of the first adhesive layer is 5-200 μm; and / or, the thickness of the second adhesive layer is 5-200 μm; and / or, the thickness of the third adhesive layer is 5-200 μm.

[0019] In another aspect, the present application also provides a loudspeaker, which comprises a shell and a loudspeaker unit fixed on the shell, the shell and the loudspeaker unit enclosing a sound cavity, and the inner side wall of the sound cavity is provided with the acoustic enhancement particle layer structure as described above.

[0020] Compared with the prior art, the acoustic enhancement particle layer structure in the loudspeaker of the present application has the following features and advantages:

[0021] The acoustic enhancement particles form a particle layer on the inner side wall of the sound cavity by means of adhesion, which can better adapt to the space shape inside the loudspeaker; the thickness of the powder layer (particle layer) is determined by the particle size of the acoustic enhancement particles, and the powder layer with different thicknesses required at different positions inside the loudspeaker can be conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort. The drawings described herein are for illustrative purposes only, and are not intended to limit the scope of the present application in any way. In addition, the shapes and scale of the components in the drawings are only illustrative, and are used to help understand the present application, and are not specific limitations on the shapes and scale of the components in the present application. Those skilled in the art can select various possible shapes and scales to implement the present application according to specific circumstances under the guidance of the present application. In the drawings:

[0023] Fig. 1 is a schematic diagram of a first embodiment of the acoustic enhancement particle layer structure of the present application;

[0024] Fig. 2 is a schematic diagram of a second embodiment of the acoustic enhancement particle layer structure of the present application;

[0025] Fig. 3 is a schematic diagram of a third embodiment of the acoustic enhancement particle layer structure of the present application;

[0026] Fig. 4 is a schematic diagram of a fourth embodiment of the acoustic enhancement particle layer structure of the present application;

[0027] Fig. 5 is a schematic diagram of a fifth embodiment of the acoustic enhancement particle layer structure of the present application.

[0028] 10, speaker; 11, housing; 12, speaker unit; 13, acoustic cavity; 20, bonding top surface; 21, first bonding layer; 22, first particle layer; 23, first bonding surface; 24, second bonding surface; 30, bonding bottom surface; 31, second bonding layer; 32, second particle layer; 40, bonding side surface; 41, third bonding layer; 42, third particle layer; 43, third bonding surface; 44, fourth bonding surface. DETAILED DESCRIPTION

[0029] In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are for purposes of illustration and description only and are not intended to be limiting.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Embodiment One:

[0033] As shown in FIG. 1, the present application provides a speaker acoustic enhancement particle layer structure disposed in an acoustic cavity 13 enclosed by at least a housing 11 of a speaker 10 and a speaker unit 12 fixed on the housing 11, the speaker acoustic enhancement particle layer structure comprising: a first bonding layer 21 disposed on a top wall of the acoustic cavity 13 opposite the speaker unit 12 to form a bonding top surface 20 opposite the speaker unit 12 on the top wall of the acoustic cavity 13; a first particle layer 22 formed by a plurality of acoustic enhancement particles, the first particle layer 22 being bonded to the bonding top surface 20.

[0034] The layer of acoustic enhancement particles is formed on the inner side wall of the sound cavity 13 by means of bonding, which can better adapt to the space shape inside the loudspeaker 10; the thickness of the powder layer (the layer of acoustic enhancement particles) is determined by the particle size of the acoustic enhancement particles, and the powder layer with different thicknesses required at different positions inside the loudspeaker 10 can be conveniently adjusted.

[0035] Specifically, as shown in FIG. 1, the shell 11 of the loudspeaker 10 has an upper cover body and a lower cover body which are combined together, the loudspeaker unit 12 is fixed on the lower cover body, a relatively closed sound cavity 13 is formed between the upper cover body and the lower cover body, the loudspeaker unit 12 is arranged towards the upper cover body, and the top wall of the loudspeaker 10 towards the loudspeaker unit 12 is formed with a bonding top surface 20, that is, the inner side surface of the upper cover body towards the loudspeaker unit 12 is formed with the bonding top surface 20. The bonding top surface 20 is coated with an adhesive to form a first bonding layer 21 on the bonding top surface 20, and the acoustic enhancement particles with acoustic enhancement effect are bonded on the first bonding layer 21 to form a first particle layer 22. The acoustic enhancement particles refer to particles (such as activated carbon, molecular sieve, etc.) containing porous materials with acoustic properties.

[0036] If the thickness of the bonding layer is too high, the filling amount of the acoustic enhancement particles will be affected, and if the thickness is too thin, the bonding effect of the acoustic enhancement particles will be affected and the acoustic enhancement particles are not easy to fix. Through a large number of experiments, it is verified that the thickness of the first bonding layer 21 is 5 μm to 200 μm, and preferably, the thickness of the first bonding layer 21 is 10 μm to 100 μm.

[0037] Further, as shown in FIG. 1, the bonding top surface 20 includes a first bonding surface 23 and a second bonding surface 24 which are distributed in a stepped manner, the first bonding surface 23 and the second bonding surface 24 are parallel planes, and the first bonding surface 23 is opposite to the loudspeaker unit 12. In this embodiment, the bonding top surface 20 is not a complete plane, but a stepped structure composed of two planes at different heights, and the above bonding structure of the present application can well adapt to the shape of the bonding top surface 20.

[0038] The first bonding surface 23, the second bonding surface 24, and the transition surface connecting the first bonding surface 23 and the second bonding surface 24 are all coated with an adhesive, and then a layer of acoustic enhancement particles is bonded on the area coated with the adhesive to form a layer of particles; that is, in this embodiment, although the top wall of the loudspeaker 10 is a three-dimensional space structure, the first bonding layer 21 and the first particle layer 22 of the present application have good applicability, and they can still be more conveniently covered on the bonding top surface 20 with the above three-dimensional shape.

[0039] In another embodiment of the present application, as shown in Fig. 2, the bonding top surface 20 comprises a first bonding surface 23 and a second bonding surface 24 connected to each other, the first bonding surface 23 is a flat surface, and the second bonding surface 24 is a curved surface, and the first bonding surface 23 is opposite to the speaker unit 12. In this embodiment, the bonding top surface 20 is not a complete flat surface, but an irregular shape composed of a flat surface and a curved surface, and the above bonding structure of the present application can well adapt to the irregular bonding top surface 20. This embodiment is similar to the above-mentioned bonding top surface 20 with a stepped shape, and both can reflect that the technical solution provided by the present application has a wide range of applications. The difference between this embodiment and the embodiment shown in Fig. 1 is only the shape of the bonding top surface 20, and therefore the specific structure of the embodiment shown in Fig. 2 will not be described here.

[0040] Of course, Figs. 1 and 2 only schematically show two bonding top surfaces 20 with different spatial structures, but are not limited thereto. Generally, the spatial shape of the bonding top surface 20 is the same as the shape of the top wall of the speaker 10, that is, the acoustic enhancement particle layer structure described in the present application can be applied to a speaker 10 with other structural forms.

[0041] According to an embodiment of the present application, as shown in Fig. 3, the bottom wall adjacent to the speaker unit 12 of the acoustic cavity 13 forms a bonding bottom surface 30, the second bonding layer 31 is coated on the bonding bottom surface 30, and the second particle layer 32 formed by the acoustic enhancement particles is bonded on the second bonding layer 31.

[0042] Specifically, the bonding bottom surface 30 is formed on the side of the bottom wall adjacent to the speaker unit 12 towards the top wall, that is, the inner side of the lower cover body towards the upper cover body forms the bonding bottom surface 30, the adhesive is coated on the bonding bottom surface 30 to form the second bonding layer 31, and the acoustic enhancement particles with acoustic enhancement effect are bonded on the second bonding layer 31 to form the second particle layer 32. The acoustic enhancement particles refer to particles containing porous materials with acoustic properties (such as activated carbon, molecular sieve, etc.).

[0043] Preferably, the particle size of the acoustic enhancement particles in the second particle layer 32 is different from the particle size of the acoustic enhancement particles in the first particle layer 22. Different positions of the acoustic cavity 13 require different thicknesses of the particle layer formed by the acoustic enhancement particles, and since the thickness of the particle layer is determined by the particle size of the acoustic enhancement particles, the acoustic enhancement particles with corresponding particle size can be selected according to the actual needs at different positions. In this embodiment, as shown in Fig. 3, the particle size of the acoustic enhancement particles in the second particle layer 32 is greater than the particle size of the acoustic enhancement particles in the first particle layer 22.

[0044] The thickness of the bonding layer is too high, which will affect the filling amount of the acoustic enhancement particles, and the thickness of the bonding layer is too thin, which will affect the bonding effect of the acoustic enhancement particles and the acoustic enhancement particles are not easy to be fixed. Through a large number of experiments, it is verified that the thickness of the second bonding layer 31 is 5 μm to 200 μm, and preferably, the thickness of the second bonding layer 31 is 10 μm to 100 μm.

[0045] According to one embodiment of the present application, as shown in FIG. 4, the acoustic cavity 13 further has a side wall perpendicular to the top wall, the side wall is formed with a bonding side 40 opposite to the loudspeaker unit 12, the bonding side 40 is coated with a third bonding layer 41, and the third bonding layer 41 is bonded with a third particle layer 42 formed by acoustic enhancement particles. The acoustic enhancement particles refer to particles (such as activated carbon, molecular sieve, etc.) containing porous materials and having acoustic properties.

[0046] Specifically, as shown in FIG. 4, the bonding side 40 has a third bonding surface 43 and a fourth bonding surface 44 distributed in a stepped manner, the third bonding surface 43 and the fourth bonding surface 44 are parallel planes, and the third bonding surface 43 and the fourth bonding surface 44 are both arranged towards the loudspeaker unit 12. In this embodiment, the bonding side 40 is not a complete plane, but a stepped structure composed of two planes located at different positions. The above bonding structure of the present application can well adapt to the shape of the bonding side 40.

[0047] The third bonding surface 43, the fourth bonding surface 44, and the transition surface connecting the third bonding surface 43 and the fourth bonding surface 44 are all coated with an adhesive, and then a layer of acoustic enhancement particles is bonded on the area coated with the adhesive to form a particle layer. That is, in this embodiment, although the side wall of the loudspeaker 10 is a three-dimensional space structure, the third bonding layer 41 and the third particle layer 42 of the present application have better applicability, and they can still conveniently cover the three-dimensional bonding side 40.

[0048] Of course, FIG. 4 only schematically shows a bonding side 40 with a space structure, but is not limited thereto. The space shape of the bonding side 40 is generally the same as the shape of the side wall of the loudspeaker 10, that is, the acoustic enhancement particle layer structure of the present application can be applied to the loudspeaker 10 with other structural forms.

[0049] Preferably, the particle size of the acoustic enhancement particles in the third particle layer 42 is different from the particle size of the acoustic enhancement particles in the first particle layer 22. Different positions of the acoustic cavity 13 have different requirements for the thickness of the particle layer formed by the acoustic enhancement particles. Since the thickness of the particle layer is determined by the particle size of the acoustic enhancement particles, the acoustic enhancement particles with the corresponding particle size can be selected according to the actual needs of different positions. In this embodiment, as shown in FIG. 4, the particle size of the acoustic enhancement particles in the third particle layer 42 is smaller than the particle size of the acoustic enhancement particles in the first particle layer 22.

[0050] The thickness of the adhesive layer is too high, which affects the filling amount of the acoustic enhancement particles, and too thin, which affects the adhesion effect of the acoustic enhancement particles and is not easy to fix. After a large number of experiments, the thickness of the third adhesive layer 41 is 5 μm to 200 μm, preferably, the thickness of the third adhesive layer 41 is 10 μm to 100 μm.

[0051] In order to further improve the acoustic performance of the loudspeaker 10, further improvements are made on the basis of the structure shown in Figure 4, as shown in Figure 5, in this embodiment, the bottom wall of the acoustic cavity 13 forms an adhesive bottom surface 30, which is provided with a second adhesive layer 31 and a second particle layer 32, the structure of the second adhesive layer 31 and the second particle layer 32 has been described in detail above, and will not be repeated here.

[0052] Embodiment two:

[0053] As shown in Figures 1 to 5, the application also provides a loudspeaker 10, which comprises a shell 11 and a loudspeaker monomer 12 fixed on the shell 11, the shell 11 and the loudspeaker monomer 12 form an acoustic cavity 13, and the inner side wall of the acoustic cavity 13 is provided with an acoustic enhancement particle layer structure as described in embodiment one.

[0054] The loudspeaker 10 described in the application uses adhesive to bond acoustic enhancement particles to the side wall of the acoustic cavity 13, and then forms a particle layer of a certain thickness on the side wall of the acoustic cavity 13 to improve the acoustic performance of the loudspeaker 10, the bonding method and the particle-shaped acoustic enhancement particles can make the formed particle layer better adapt to the shape of the space inside the loudspeaker 10, and can be widely used in various loudspeakers 10 with different structures.

[0055] The above-described specific embodiments further detail the purpose, technical solutions and beneficial effects of the application, and it should be understood that the above-described specific embodiments are only for the purpose of the application and do not limit the protection scope of the application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application should be included in the protection scope of the application.

Claims

A layer structure of acoustically enhancing particles within a loudspeaker is provided within an acoustic cavity enclosed at least by a housing of the loudspeaker and a loudspeaker unit fixed to the housing, wherein The acoustic enhancement particle layer structure in the loudspeaker further comprises: a first adhesive layer arranged on a top wall of the acoustic cavity opposite the loudspeaker unit to form an adhesive top surface on the top wall of the acoustic cavity opposite the loudspeaker unit; a first particle layer formed by a plurality of acoustic enhancement particles, the first particle layer being adhered to the adhesive top surface. The layer of acoustically enhancing particles within a loudspeaker of claim 1, wherein, The adhesive top surface comprises a first adhesive surface and a second adhesive surface distributed in a stepped manner, the first adhesive surface and the second adhesive surface being parallel planes, and the first adhesive surface being opposite the loudspeaker unit. The layer of acoustically enhancing particles within a loudspeaker of claim 1, wherein, The adhesive top surface comprises a first adhesive surface and a second adhesive surface connected to each other, the first adhesive surface being a plane, and the second adhesive surface being a curved surface, and the first adhesive surface being opposite the loudspeaker unit. The layer of acoustically enhancing particles within a loudspeaker of claim 1, wherein, The acoustic enhancement particle layer structure in the loudspeaker further comprises: a second adhesive layer arranged on a bottom wall of the acoustic cavity adjacent to the loudspeaker to form an adhesive bottom surface on the bottom wall of the acoustic cavity; a second particle layer formed by a plurality of acoustic enhancement particles, the second particle layer being adhered to the adhesive bottom surface. The layer of acoustically enhancing particles within a loudspeaker of claim 4, wherein, The particle size of the acoustic enhancement particles in the second particle layer is different from the particle size of the acoustic enhancement particles in the first particle layer. The layer of acoustically enhancing particles within a loudspeaker of claim 1, wherein, The acoustic enhancement particle layer structure in the loudspeaker further comprises: a third adhesive layer arranged on a side wall of the acoustic cavity perpendicular to the top wall to form an adhesive side surface on the side wall of the acoustic cavity opposite the loudspeaker unit; a third particle layer formed by a plurality of acoustic enhancement particles, the third particle layer being adhered to the adhesive side surface. The layer of acoustically enhancing particles within a loudspeaker of claim 6, wherein, The adhesive side surface has a third adhesive surface and a fourth adhesive surface distributed in a stepped manner, the third adhesive surface and the fourth adhesive surface being parallel planes. The layer of acoustically enhancing particles within a loudspeaker of claim 6, wherein, The particle size of the acoustic enhancement particles in the third particle layer is different from the particle size of the acoustic enhancement particles in the first particle layer. The layer of acoustically enhancing particles within a loudspeaker of claim 4, wherein, The acoustic enhancement particle layer structure in the loudspeaker further comprises: a third adhesive layer arranged on a side wall of the acoustic cavity perpendicular to the top wall to form an adhesive side surface on the side wall of the acoustic cavity opposite the loudspeaker unit; a third particle layer formed by a plurality of acoustic enhancement particles, the third particle layer being adhered to the adhesive side surface. The layer of acoustically enhancing particles within a loudspeaker of claim 9, wherein, The thickness of the first adhesive layer is 5 μm to 200 μm; and / or, the thickness of the second adhesive layer is 5 μm to 200 μm; and / or, the thickness of the third adhesive layer is 5 μm to 200 μm. A loudspeaker, wherein, The loudspeaker comprises a shell and a loudspeaker unit fixed on the shell, the shell and the loudspeaker unit enclosing an acoustic cavity, and an acoustic enhancement particle layer structure as claimed in any one of claims 1 to 10 is arranged on the inner side wall of the acoustic cavity.

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