Acoustic enhancement particle layer structure in loudspeaker and loudspeaker

Abstract

The utility model provides an acoustic enhancement particle layer structure in a loudspeaker and the loudspeaker, the acoustic enhancement particle layer structure is arranged in a sound cavity which is at least enclosed by a shell of the loudspeaker and a loudspeaker monomer fixed on the shell, and the acoustic enhancement particle layer structure in the loudspeaker comprises a first bonding layer, a second bonding layer, a third bonding layer and a fourth bonding layer, the first bonding layer is arranged on the top wall, opposite to the loudspeaker single body, of the sound cavity, so that a bonding top surface opposite to the loudspeaker single body is formed on the top wall of the sound cavity; the first particle layer is formed by a plurality of acoustically-enhanced particles, and the first particle layer is bonded to the bonding top surface. The acoustic enhancement granular layer structure is used for replacing a powder sheet in a loudspeaker, and solves the problem that the powder sheet cannot well adapt to the shape of a three-dimensional space in the loudspeaker.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to an acoustically enhanced granular layer structure in a loudspeaker and the loudspeaker. Background Art

[0002] As consumer electronics continue to develop, the pursuit of thinner and lighter electronic devices is gradually increasing, which poses a challenge to internal speaker components.

[0003] Due to the constraints of the speaker's appearance and the requirements for acoustic performance, thin acoustic enhancement materials are usually used in speaker components, such as thin sheets of sound-absorbing cotton, sheet-like acoustic enhancement powder, etc.

[0004] The acoustic enhancement ability of sound-absorbing cotton is much worse than that of conventional acoustic enhancement particles and powder sheets. Therefore, in the face of the above-mentioned trend of lightweight and thinning, or when the rear cavity space structure of the speaker is not suitable, or when the appropriate design cycle is missed and powder filling is not considered but the performance is not enough, the existing solutions will be more inclined to use powder sheets to increase the acoustic performance of the speaker.

[0005] However, powder sheets still have the following problems: 1. Existing powder sheets can be cut into shapes in the XY directions, but cannot cope well with changes in the Z direction, especially the bottom of the powder sheet needs to be flat, which will not work if it is a bent or curved surface; 2. The actual application scenarios have high requirements for air circulation. Utility Model Content

[0006] The purpose of the utility model is to provide an acoustically enhanced granular layer structure in a speaker and a speaker, which are used to replace the arrangement of powder sheets in the speaker and solve the problem that the powder sheets cannot adapt well to the three-dimensional space shape in the speaker.

[0007] The technical objectives of the present invention are mainly achieved by the following technical solutions:

[0008] On the one hand, the utility model provides an acoustically enhanced granular layer structure in a speaker, which is arranged in a sound cavity formed by at least a speaker shell and a speaker unit fixed on the shell, and the acoustically enhanced granular layer structure in the speaker includes: a first adhesive layer, which is arranged on the top wall of the sound cavity and opposite to the speaker unit to form a bonding top surface on the top wall of the sound cavity opposite to the speaker unit; a first granular layer formed by a plurality of acoustically enhanced particles, and the first granular layer is bonded to the bonding top surface.

[0009] In a preferred embodiment of the present invention, the bonding top surface includes a first bonding surface and a second bonding surface distributed in a stepped manner, the first bonding surface and the second bonding surface are parallel planes, and the first bonding surface is opposite to the speaker unit.

[0010] In a preferred embodiment of the present invention, the bonding top surface includes a first bonding surface and a second bonding surface that are connected, the first bonding surface is a plane, the second bonding surface is a curved surface, and the first bonding surface is opposite to the speaker unit.

[0011] In a preferred embodiment of the utility model, the acoustic enhancement particle layer structure in the speaker also includes: a second adhesive layer, the second adhesive layer is arranged on the bottom wall of the sound cavity and adjacent to the speaker to form a bonding bottom surface on the bottom wall of the sound cavity; a second particle layer formed by a plurality of acoustic enhancement particles, the second particle layer is bonded to the bonding bottom surface.

[0012] In a preferred embodiment of the present invention, 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 acoustic enhancement particle layer in the first particle layer.

[0013] In a preferred embodiment of the present invention, the acoustic enhancement particle layer structure in the speaker also includes: a third bonding layer, the third bonding layer is arranged on the side wall of the sound cavity and perpendicular to the top wall to form a bonding side surface on the side wall of the sound cavity opposite to the speaker unit; a third particle layer formed by a plurality of acoustic enhancement particles, the third particle layer being bonded to the bonding side surface.

[0014] In a preferred embodiment of the present invention, the bonding side surface has a third bonding surface and a fourth bonding surface that are distributed in a stepped manner, and the third bonding surface and the fourth bonding surface are parallel planes.

[0015] In a preferred embodiment of the present invention, 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 acoustic enhancement particle layer in the first particle layer.

[0016] In a preferred embodiment of the present invention, 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.

[0017] On the other hand, the utility model also provides a speaker, which includes a shell and a speaker unit fixed on the shell, the shell and the speaker unit are surrounded to form a sound cavity, and the inner wall of the sound cavity is provided with the acoustic enhancement granular layer structure as described above.

[0018] Compared with the prior art, the acoustic enhancement granular layer structure in the loudspeaker of the utility model has the following characteristics and advantages:

[0019] The acoustic enhancement particles are bonded to the inner wall of the sound cavity to form a particle layer, which can better adapt to the spatial shape inside the speaker; the thickness of the powder layer (particle layer) is determined by the particle size of the acoustic enhancement particles, and the powder layers of different thicknesses required at different positions inside the speaker can be easily adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0022] Figure 1 It is a schematic diagram of a first embodiment of the acoustically enhanced granular layer structure of the utility model;

[0023] Figure 2 It is a schematic diagram of a second embodiment of the acoustically enhanced granular layer structure of the utility model;

[0024] Figure 3 It is a schematic diagram of a third embodiment of the acoustically enhanced granular layer structure of the utility model;

[0025] Figure 4 It is a schematic diagram of a fourth embodiment of the acoustically enhanced granular layer structure of the utility model;

[0026] Figure 5 It is a schematic diagram of a fifth embodiment of the acoustically enhanced granular layer structure of the present invention.

[0027] Description of reference numerals:

[0028] 10. Speaker; 11. Shell; 12. Speaker unit; 13. Sound cavity;

[0029] 20. bonding top surface; 21. first bonding layer; 22. first particle layer; 23. first bonding surface; 24. second bonding surface;

[0030] 30. bonding bottom surface; 31. second bonding layer; 32. second particle layer;

[0031] 40. bonding side surface; 41. third bonding layer; 42. third particle layer; 43. third bonding surface; 44. fourth bonding surface. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] Implementation method 1:

[0036] like Figure 1 As shown, the utility model provides an acoustically enhanced granular layer structure in a loudspeaker, which is arranged in a sound cavity 13 formed by at least a shell 11 of the loudspeaker 10 and a loudspeaker unit 12 fixed on the shell 11, and the acoustically enhanced granular layer structure in the loudspeaker includes: a first adhesive layer 21, the first adhesive layer 21 is arranged on the top wall of the sound cavity 13 and opposite to the loudspeaker unit 12, so as to form a bonding top surface 20 on the top wall of the sound cavity 13 opposite to the loudspeaker unit 12; a first granular layer 22 formed by a plurality of acoustically enhanced granules, and the first granular layer 22 is bonded to the bonding top surface 20.

[0037] The acoustic enhancement particle layer structure in the loudspeaker described in the utility model, the acoustic enhancement particles are bonded to form a particle layer on the inner wall of the sound cavity 13, which can better adapt to the spatial shape inside the loudspeaker 10; the thickness of the powder layer (particle layer) is determined by the particle size of the acoustic enhancement particles, and the powder layers of different thicknesses required at different positions inside the loudspeaker 10 can be easily adjusted.

[0038] Specifically, Figure 1 As shown, the housing 11 of the loudspeaker 10 has an upper cover body and a lower cover body which are covered 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 toward the upper cover body, and a bonding top surface 20 is formed on the side of the top wall of the loudspeaker 10 facing the loudspeaker unit 12, that is, the inner side surface of the upper cover body facing the loudspeaker unit 12 forms 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 acoustic enhancement particles having an acoustic enhancement effect are bonded to the first bonding layer 21 to form a first particle layer 22. Among them, the acoustic enhancement particles refer to particles containing porous materials with acoustic properties (such as activated carbon, molecular sieves, etc.).

[0039] If the thickness of the adhesive layer is too high, it will affect the filling amount of the acoustic enhancement particles. If it is too thin, it will affect the bonding effect of the acoustic enhancement particles and make it difficult to fix. After a large number of experiments, the thickness of the first adhesive layer 21 is 5μm to 200μm. Preferably, the thickness of the first adhesive layer 21 is 10μm to 100μm.

[0040] Further, such as Figure 1 As shown, 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 speaker 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. The bonding structure of the utility model can well adapt to the shape of the bonding top surface 20.

[0041] Adhesive is coated on 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, and then a layer of acoustic enhancement particles is bonded to the area coated with the above-mentioned adhesive to form a particle layer; that is, in this embodiment, although the top wall of the speaker 10 is a three-dimensional spatial structure, the first bonding layer 21 and the first particle layer 22 described in the utility model have better applicability, and they can still more conveniently cover the above-mentioned three-dimensional bonding top surface 20.

[0042] In another embodiment of the present invention, Figure 2As shown, the bonding top surface 20 includes a first bonding surface 23 and a second bonding surface 24 connected to each other. The first bonding surface 23 is a plane, and the second bonding surface 24 is a curved surface. The first bonding surface 23 is opposite to the speaker unit 12. In this embodiment, the bonding top surface 20 is not a complete plane, but an irregular shape composed of a plane and a curved surface. The above bonding structure of the utility model can well adapt to the irregular bonding top surface 20. This embodiment is similar to the above-mentioned stepped bonding top surface 20, and both can reflect that the technical solution provided by the utility model has a large scope of application. This embodiment is similar to the above-mentioned stepped bonding top surface 20. Figure 1 The difference between the embodiments shown is only in the shape of the bonding top surface 20, which is not discussed here. Figure 2 The specific structure of the illustrated embodiment is omitted here.

[0043] certainly, Figure 1 and Figure 2 Two bonding top surfaces 20 with different spatial structures are only schematically shown, but not limited to this. The spatial shape of the bonding top surface 20 is usually the same as the top wall shape of the speaker 10, that is, the acoustically enhanced granular layer structure described in the utility model can be applied to speakers 10 with other structural forms.

[0044] According to one embodiment of the present utility model, Figure 3 As shown, the bottom wall of the sound cavity 13 adjacent to the speaker unit 12 forms a bonding bottom surface 30 , on which a second bonding layer 31 is coated, and on which a second particle layer 32 formed of acoustic enhancement particles is bonded.

[0045] Specifically, a bonding bottom surface 30 is formed on the side of the bottom wall adjacent to the speaker unit 12 facing the top wall, that is, the inner side surface of the lower cover body facing the upper cover body forms a bonding bottom surface 30, and an adhesive is coated on the bonding bottom surface 30 to form a second bonding layer 31 on the bonding bottom surface 30, and acoustic enhancement particles with acoustic enhancement effect are bonded on the second bonding layer 31 to form a second particle layer 32. Among them, the acoustic enhancement particles refer to particles containing porous materials with acoustic properties (such as activated carbon, molecular sieves, etc.).

[0046] 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 acoustic enhancement particle layer 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 of the corresponding particle size can be selected according to the actual needs at different positions; in this embodiment, Figure 3 As shown, the particle size of the acoustic enhancement particles in the second particle layer 32 is larger than the particle size of the acoustic enhancement particles in the first particle layer 22 .

[0047] If the thickness of the adhesive layer is too high, it will affect the filling amount of the acoustic enhancement particles. If it is too thin, it will affect the bonding effect of the acoustic enhancement particles and make it difficult to fix. After a large number of experiments, the thickness of the second adhesive layer 31 is 5μm to 200μm. Preferably, the thickness of the second adhesive layer 31 is 10μm to 100μm.

[0048] According to one embodiment of the present utility model, Figure 4 As shown, the acoustic cavity 13 also has a side wall perpendicular to the top wall, and the side wall is formed with a bonding side surface 40 opposite to the speaker unit 12, and a third bonding layer 41 is coated on the bonding side surface 40, and a third particle layer 42 formed of acoustic enhancement particles is bonded to the third bonding layer 41. Among them, the acoustic enhancement particles refer to particles containing porous materials with acoustic properties (such as activated carbon, molecular sieve, etc.).

[0049] Specifically, Figure 4 As shown, the bonding side surface 40 has a third bonding surface 43 and a fourth bonding surface 44 which are distributed in a stepped manner, and 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 toward the speaker unit 12. In this embodiment, the bonding side surface 40 is not a complete plane, but a stepped structure composed of two planes located at different positions, and the above bonding structure of the utility model can well adapt to the shape of the above bonding side surface 40.

[0050] Adhesive is coated on 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, and then a layer of acoustic enhancement particles is bonded to the area coated with the above-mentioned adhesive to form a particle layer; that is, in this embodiment, although the side wall of the speaker 10 is a three-dimensional spatial structure, the third bonding layer 41 and the third particle layer 42 of the utility model have better applicability, and they can still more conveniently cover the above-mentioned three-dimensional bonding side 40.

[0051] certainly, Figure 4 A bonding side 40 with a spatial structure is only schematically shown, but not limited to this. The spatial shape of the bonding side 40 is usually the same as the side wall shape of the speaker 10, that is, the acoustically enhanced granular layer structure described in the utility model can be applied to speakers 10 with other structural forms.

[0052] 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 acoustic enhancement particle layer 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 of the corresponding particle size can be selected according to the actual needs at different positions; in this embodiment, Figure 4 As shown, 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 .

[0053] If the thickness of the adhesive layer is too high, it will affect the filling amount of the acoustic enhancement particles. If it is too thin, it will affect the bonding effect of the acoustic enhancement particles and make it difficult to fix. After a large number of experiments, the thickness of the third adhesive layer 41 is 5μm to 200μm. Preferably, the thickness of the third adhesive layer 41 is 10μm to 100μm.

[0054] In order to further improve the acoustic performance of the speaker 10, Figure 4 Further improvements have been made on the basis of the structure shown in FIG. Figure 5 As shown, in this embodiment, a second adhesive layer 31 and a second granular layer 32 are provided on the adhesive bottom surface 30 formed by the bottom wall of the acoustic cavity 13. The structures of the second adhesive layer 31 and the second granular layer 32 have been described in detail above and will not be repeated here.

[0055] Implementation method 2:

[0056] like Figures 1 to 5 As shown, the utility model also provides a speaker 10, which includes a shell 11 and a speaker unit 12 fixed on the shell 11, the shell 11 and the speaker unit 12 surround a sound cavity 13, and the inner wall of the sound cavity 13 is provided with an acoustically enhanced granular layer structure as described in the first embodiment.

[0057] The loudspeaker 10 described in the present invention bonds acoustic enhancement particles to the side walls of the sound cavity 13 by an adhesive, thereby forming a particle layer of a certain thickness on the side walls of the sound cavity 13 to improve the acoustic performance of the loudspeaker 10. The bonding method and the granular acoustic enhancement particles enable the formed particle layer to better adapt to the spatial shape inside the loudspeaker 10, and is widely used in loudspeakers 10 of various structures.

[0058] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An acoustically enhanced granular layer structure in a speaker, which is arranged in a sound cavity formed by at least a speaker housing and a speaker unit fixed to the housing, characterized in that: The acoustically enhanced granular layer structure within the loudspeaker comprises: A first adhesive layer, the first adhesive layer is arranged on a top wall of the sound cavity opposite to the speaker unit, so as to form an adhesive top surface on the top wall of the sound cavity opposite to the speaker unit; A first particle layer is formed by a plurality of acoustic enhancement particles, wherein the first particle layer is bonded to the bonding top surface.

2. The acoustically enhanced granular layer structure in a loudspeaker according to claim 1, characterized in that The bonding top surface includes a first bonding surface and a second bonding surface which are distributed in a stepped manner. The first bonding surface and the second bonding surface are parallel planes. The first bonding surface is opposite to the speaker unit.

3. The acoustically enhanced granular layer structure in a loudspeaker according to claim 1, characterized in that The bonding top surface includes a first bonding surface and a second bonding surface that are connected, the first bonding surface is a plane, the second bonding surface is a curved surface, and the first bonding surface is opposite to the speaker unit.

4. The acoustically enhanced granular layer structure in a loudspeaker according to claim 1, characterized in that The acoustically enhanced granular layer structure within the speaker also includes: a second adhesive layer, the second adhesive layer being disposed on a bottom wall of the acoustic cavity adjacent to the speaker to form an adhesive bottom surface on the bottom wall of the acoustic cavity; A second particle layer is formed by a plurality of acoustic enhancement particles, and the second particle layer is bonded to the bonding bottom surface.

5. The acoustically enhanced granular layer structure in a loudspeaker according to claim 4, characterized in that 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 acoustic enhancement particle layer in the first particle layer.

6. The acoustically enhanced granular layer structure in a loudspeaker according to claim 1, characterized in that The acoustically enhanced granular layer structure within the speaker also includes: a third adhesive layer, the third adhesive layer being disposed on a side wall of the acoustic cavity and perpendicular to the top wall, so as to form an adhesive side surface on the side wall of the acoustic cavity opposite to the speaker unit; A third particle layer is formed by a plurality of acoustic enhancement particles, and the third particle layer is bonded to the bonding side.

7. The acoustically enhanced granular layer structure in a loudspeaker according to claim 6, characterized in that The bonding side surface has a third bonding surface and a fourth bonding surface which are distributed in a stepped manner, and the third bonding surface and the fourth bonding surface are parallel planes.

8. The acoustically enhanced granular layer structure in a loudspeaker according to claim 6, characterized in that 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 acoustic enhancement particle layer in the first particle layer.

9. The acoustically enhanced granular layer structure in a loudspeaker according to claim 4, characterized in that The acoustically enhanced granular layer structure within the speaker also includes: a third adhesive layer, the third adhesive layer being disposed on a side wall of the acoustic cavity and perpendicular to the top wall, so as to form an adhesive side surface on the side wall of the acoustic cavity opposite to the speaker unit; A third particle layer is formed by a plurality of acoustic enhancement particles, and the third particle layer is bonded to the bonding side.

10. The acoustically enhanced granular layer structure in a loudspeaker according to claim 9, characterized in that 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.

11. A loudspeaker, characterized in that: The speaker comprises a shell and a speaker unit fixed on the shell, wherein the shell and the speaker unit surround and form a sound cavity, and an inner wall of the sound cavity is provided with an acoustically enhanced granular layer structure as described in any one of claims 1-10.

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