Half-cavity loudspeaker module

Abstract

The utility model discloses a half-cavity loudspeaker module, which comprises a module shell, a loudspeaker monomer, three-dimensional mesh cloth and sound absorption particles, and is characterized in that the module shell is provided with a mounting cavity and an open rear cavity communicated with the mounting cavity, and the open rear cavity is communicated with the outer surface of the module shell to form an open window; the loudspeaker single body is mounted at the mounting cavity and is provided with an air hole; the three-dimensional screen cloth comprises an inner connecting part, an isolation part and a shielding part which are connected in sequence, the isolation part is arranged around the inner connecting part, the inner connecting part and the isolation part are both connected with the loudspeaker single body to shield the air hole, and the outer edge of the shielding part is fixedly connected with the edge of the open window to define a powder filling rear cavity with a partial area of the module shell; and the sound-absorbing particles are filled in the powder filling rear cavity. The half-cavity loudspeaker module is filled with the sound-absorbing particles, so that the low-frequency performance of the half-cavity loudspeaker module is greatly improved, the performance of the half-cavity loudspeaker module is improved, and the half-cavity loudspeaker module can achieve high performance.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, and particularly relates to a semi-cavity loudspeaker module. Background Art

[0002] With the development of society, the thickness of the loudspeaker module is getting smaller and smaller. Some loudspeaker modules begin to adopt a semi-cavity design to reduce the overall thickness of the loudspeaker module. The biggest feature of the semi-cavity loudspeaker module is that it has an open rear cavity. The open window of the open rear cavity contacts other components inside the whole machine of an electronic device (including but not limited to mobile phones, smart watches, etc.), thereby closing the open rear cavity.

[0003] In order to pursue low-frequency performance, the industry usually adopts the method of pouring sound-absorbing particles into the rear cavity to improve the low-frequency performance of the loudspeaker module. However, the rear cavity of the semi-cavity loudspeaker module is open, and it is difficult to pour sound-absorbing particles. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a semi-cavity loudspeaker module with good low-frequency performance.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is: a semi-cavity loudspeaker module, comprising:

[0006] A module housing, the module housing having an installation cavity and an open rear cavity communicating with the installation cavity, the open rear cavity communicating with the outer surface of the module housing to form an open window;

[0007] A loudspeaker unit, the loudspeaker unit being installed at the installation cavity, the loudspeaker unit having air holes;

[0008] A three-dimensional mesh cloth, the three-dimensional mesh cloth comprising an inner connecting portion, a separating portion and a shielding portion connected in sequence, the separating portion surrounding the inner connecting portion, the inner connecting portion and the separating portion both connecting to the loudspeaker unit to shield the air holes, and an outer edge of the shielding portion being fixedly connected to an edge of the open window to enclose a powder-filled rear cavity with a partial area of the module housing;

[0009] Sound-absorbing particles, the sound-absorbing particles being poured into the powder-filled rear cavity.

[0010] In one embodiment, a cross-section of the separating portion is U-shaped.

[0011] In one embodiment, the inner connecting portion and the shielding portion are coplanar.

[0012] In one embodiment, the inner connecting portion is planar or ring-shaped.

[0013] In one embodiment, it further includes a sealing cotton disposed along the outer edge of the shielding portion, and the sealing cotton is located on the side of the shielding portion away from the speaker unit.

[0014] In one embodiment, the sealing cotton and the three-dimensional mesh are connected as an integral structure.

[0015] In one embodiment, the three-dimensional mesh is a woven mesh.

[0016] In one embodiment, the three-dimensional mesh is a metal mesh.

[0017] In one embodiment, a perfusion port communicating with the post-powder filling cavity is provided on the module housing, and an isolation sheet is provided at the perfusion port.

[0018] The beneficial effects of the present utility model are as follows: The semi-cavity speaker module of the present utility model is filled with sound-absorbing particles, which greatly improves its low-frequency performance, is beneficial to improving the performance of the semi-cavity speaker module, and enables the semi-cavity speaker module to achieve high performance. The semi-cavity speaker of the present utility model uses a three-dimensional mesh and a module housing to enclose a post-powder filling cavity, with a simple structure and easy processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the semi-cavity speaker module according to Embodiment 1 of the present utility model;

[0021] Figure 2 It is a partial cross-sectional view of the semi-cavity speaker module according to Embodiment 1 of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the three-dimensional mesh in the semi-cavity speaker module according to Embodiment 1 of the present utility model.

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Module housing; 11. Post-powder filling cavity; 12. Perfusion port;

[0025] 2. Speaker unit;

[0026] 3. Three-dimensional mesh; 31. Inner connection portion; 32. Isolation portion; 33. Shielding portion;

[0027] 4. Sealing cotton;

[0028] 5. Separation sheet Detailed implementation mode

[0029] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings.

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0033] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0035] Embodiment 1

[0036] Please refer toFigures 1 to 3 In the first embodiment of the present utility model, there is provided a half - cavity speaker module, which includes a module housing 1, a speaker unit 2, a three - dimensional mesh cloth 3, and sound - absorbing particles (not shown in the figure). The module housing 1 has an installation cavity and an open rear cavity communicating with the installation cavity. The open rear cavity communicates with the outer surface of the module housing 1 to form an open window. The speaker unit 2 is installed at the installation cavity, and the speaker unit 2 has air - permeable holes (not shown in the figure). The three - dimensional mesh cloth 3 includes an inner connecting portion 31, an isolating portion 32, and a shielding portion 33 connected in sequence. The isolating portion 32 surrounds the inner connecting portion 31. Both the inner connecting portion 31 and the isolating portion 32 are connected to the speaker unit 2 to shield the air - permeable holes. The outer edge of the shielding portion 33 is fixedly connected to the edge of the open window to enclose a powder - filling rear cavity 11 with a partial area of the module housing 1. In other words, the powder - filling rear cavity 11 is formed by isolating at least a partial area from the open rear cavity. The sound - absorbing particles are filled in the powder - filling rear cavity 11.

[0037] It is easy to understand that when the air - permeable holes of the speaker unit 2 are provided on the side surface of the speaker unit 2, the isolating portion 32 shields the air - permeable holes; when the air - permeable holes of the speaker unit 2 are provided on the yoke of the speaker unit 2, the inner connecting portion 31 shields the air - permeable holes; when the air - permeable holes of the speaker unit 2 communicate with its side surface and the yoke, the inner connecting portion 31 and the isolating portion 32 cooperate with each other to jointly shield the air - permeable holes.

[0038] For the convenience of processing and manufacturing the three - dimensional mesh cloth 3, it is preferred that the cross - section of the isolating portion 32 is U - shaped. During production, the isolating portion 32 can be formed by pressing.

[0039] Optionally, the inner connecting portion 31 and the shielding portion 33 are arranged in the same plane. Of course, it is also possible that the inner connecting portion 31 and the shielding portion 33 present a height difference in the thickness direction of the half - cavity speaker module.

[0040] In this embodiment, the inner connecting portion 31 is planar. In other embodiments, it is also acceptable that the inner connecting portion 31 is in a ring - frame shape.

[0041] The half - cavity speaker module further includes a sealing cotton 4 arranged along the outer edge of the shielding portion 33. The sealing cotton 4 is located on the side of the shielding portion 33 away from the speaker unit 2. During assembly, the half - cavity speaker module is directly bonded and fixed in the electronic device through the sealing cotton 4. The presence of the sealing cotton 4 facilitates the assembly work of the half - cavity speaker module and the whole machine.

[0042] Optionally, the sealing cotton 4 and the three-dimensional mesh cloth 3 are connected as an integral structure. That is to say, the three-dimensional mesh cloth 3 and the sealing cotton 4 can be pre-connected to form a whole, and then the three-dimensional mesh cloth 3 is fixedly connected to the module housing 1. This can make the connection between the sealing cotton 4 and the three-dimensional mesh cloth 3 more convenient and is conducive to improving production efficiency.

[0043] The three-dimensional mesh cloth 3 can be a woven mesh cloth or a metal mesh, and specific selection and setting need to be made according to actual needs.

[0044] The module housing 1 is provided with a perfusion port 12 communicating with the post-powder-filling cavity 11, and an isolation piece 5 is provided at the perfusion port 12.

[0045] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A semi-cavity speaker module, characterized in that: include A module housing, wherein the module housing has a mounting cavity and an open rear cavity communicating with the mounting cavity, wherein the open rear cavity communicates with an outer surface of the module housing to form an open window; A speaker unit, the speaker unit is installed in the installation cavity, and the speaker unit has an air hole; A three-dimensional mesh, the three-dimensional mesh comprising an inner connecting portion, an isolating portion and a shielding portion connected in sequence, the isolating portion being arranged around the inner connecting portion, the inner connecting portion and the isolating portion both being connected to the speaker unit to shield the vent hole, the outer edge of the shielding portion being fixedly connected to the edge of the open window to enclose a partial area of ​​the module housing to form a powder filling rear cavity; Sound-absorbing particles are poured into the powder-filled rear cavity.

2. The semi-cavity speaker module according to claim 1, characterized in that: The isolation portion has a U-shaped cross section.

3. The semi-cavity speaker module according to claim 2, characterized in that: The inner connecting portion and the shielding portion are arranged on the same plane.

4. The semi-cavity speaker module according to claim 2, wherein: The inner connecting portion is in a plane shape or a ring frame shape.

5. The semi-cavity speaker module according to claim 1, wherein: It also includes sealing cotton arranged along the outer edge of the shielding portion, and the sealing cotton is located on a side of the shielding portion away from the speaker unit.

6. The semi-cavity speaker module according to claim 5, wherein: The sealing cotton and the three-dimensional mesh cloth are connected to form an integrated structure.

7. The semi-cavity speaker module according to claim 1, wherein: The three-dimensional mesh is a woven mesh.

8. The semi-cavity speaker module according to claim 1, wherein: The three-dimensional mesh is a metal mesh.

9. The semi-cavity speaker module according to claim 1, wherein: The module housing is provided with a filling port connected to the powder filling rear cavity, and an isolation sheet is provided at the filling port.

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