Ultrathin loudspeaker module

Abstract

The utility model discloses an ultrathin loudspeaker module which comprises a module shell, a vibration assembly and a magnetic circuit assembly, the module shell comprises an upper shell and a lower shell which are connected, the upper shell is provided with a first window, and the lower shell is provided with a second window corresponding to the first window; the vibration assembly comprises a vibrating diaphragm assembly and a voice coil which are connected, and the vibrating diaphragm assembly is connected with the upper shell and seals the first open window; and the magnetic circuit assembly is connected with the module shell, the magnetic circuit assembly is provided with a magnetic gap for the voice coil to move, the magnetic circuit assembly comprises a yoke, and the yoke is located at the second window. According to the ultra-thin loudspeaker module, a basin frame is omitted, the module structure is simplified, and the production cost of the ultra-thin loudspeaker module is reduced; and the lower shell is provided with a second window for accommodating the yoke, so that the overall thickness of the ultrathin loudspeaker module can be designed to be smaller.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic converter technology, and in particular to an ultra-thin speaker module. Background Technology

[0002] Existing ultra-thin speaker modules consist of a module housing and a speaker unit housed within the housing. The speaker unit includes a frame and a resonating assembly and a magnetic circuit assembly connected to the frame. The module housing comprises a connected upper and lower shell. The simultaneous presence of the frame and upper shell requires significant material consumption, lengthens the speaker module production process, and results in higher manufacturing costs for ultra-thin speaker modules. Furthermore, there is still room for further reduction in the thickness of existing ultra-thin speaker modules. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a low-cost, ultra-thin speaker module.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an ultra-thin speaker module, comprising:

[0005] The module housing includes an upper shell and a lower shell connected together. The upper shell is provided with a first window, and the lower shell is provided with a second window corresponding to the first window.

[0006] A vibration assembly, comprising a connected diaphragm assembly and a voice coil, wherein the diaphragm assembly is connected to the upper shell and closes the first opening;

[0007] A magnetic circuit assembly connected to the module housing, the magnetic circuit assembly having a magnetic gap for the voice coil to move, the magnetic circuit assembly including a yoke located at the second opening.

[0008] Furthermore, the upper shell has a mounting flange that connects to the magnetic circuit assembly.

[0009] Furthermore, the mounting flange is positioned close to the edge of the first window opening.

[0010] Furthermore, the module housing has a rear cavity communicating with the magnetic gap, the rear cavity being filled with sound-absorbing particles, a vent window being provided on the mounting flange, and a breathable isolation element being provided at the vent window for isolating the sound-absorbing particles.

[0011] Furthermore, the breathable insulating component is a metal mesh, a mesh fabric, or a breathable sponge.

[0012] Furthermore, the module housing is provided with an injection hole that communicates with the rear cavity, and a barrier plate is provided at the injection hole.

[0013] Furthermore, the rear cavity is in the shape of a ring frame.

[0014] Furthermore, the magnetic circuit assembly also includes a central magnetic structure and a side magnetic structure respectively disposed on the yoke, the side magnetic structure being disposed around the central magnetic structure, the magnetic gap being formed between the side magnetic structure and the central magnetic structure, and the mounting flange connecting the side magnetic structure.

[0015] Furthermore, the lower shell is made of sheet metal.

[0016] Furthermore, the lower shell is provided with a reinforcing bulge.

[0017] The beneficial effects of this invention are as follows: Compared with existing ultra-thin speaker modules, this ultra-thin speaker module eliminates the frame, simplifies the module structure, and integrates the speaker unit and module housing into a single structure. This not only reduces the consumption of manufacturing materials but also shortens the assembly process, effectively improving the production efficiency and reducing the production cost of the ultra-thin speaker module. Furthermore, the elimination of the frame also allows for an increase in the volume of the rear cavity of the ultra-thin speaker module, improving its acoustic performance. In addition, the second opening on the lower shell to accommodate the yoke allows for a smaller overall thickness of the ultra-thin speaker module. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the ultra-thin speaker module of Embodiment 1;

[0019] Figure 2 This is a cross-sectional view of the ultra-thin speaker module of Embodiment 1 from another perspective;

[0020] Figure 3 This is a schematic diagram of the structure of the ultra-thin speaker module in Embodiment 1.

[0021] Label Explanation:

[0022] 1. Upper shell; 11. First opening; 12. Mounting flange;

[0023] 2. Lower shell; 21. Second window; 22. Reinforcing bulge;

[0024] 3. Diaphragm assembly;

[0025] 4. Voice coil;

[0026] 51. Yoke; 52. Central magnetic structure; 53. Edge magnetic structure;

[0027] 6. Posterior cavity;

[0028] 7. Breathable insulation components;

[0029] 8. Barrier sheet. Detailed Implementation

[0030] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0031] Please refer to Figures 1 to 3 Ultra-thin speaker module, including:

[0032] The module housing includes an upper shell 1 and a lower shell 2 connected together. The upper shell 1 is provided with a first opening 11, and the lower shell 2 has a second opening 21 corresponding to the first opening 11.

[0033] The vibration assembly includes a connected diaphragm assembly 3 and a voice coil 4. The diaphragm assembly 3 is connected to the upper shell 1 and closes the first opening 11.

[0034] A magnetic circuit assembly is connected to the module housing. The magnetic circuit assembly has a magnetic gap for the voice coil 4 to move. The magnetic circuit assembly includes a yoke 51, which is located at the second opening 21.

[0035] As can be seen from the above description, the beneficial effects of this utility model are as follows: Compared with existing ultra-thin speaker modules, this ultra-thin speaker module eliminates the frame, simplifies the module structure, and integrates the speaker unit and the module shell into a single structure. This not only reduces the consumption of manufacturing materials but also shortens the assembly process of the ultra-thin speaker module, effectively improving the production efficiency and reducing the production cost. Furthermore, the elimination of the frame also helps to increase the volume of the rear cavity 6 of the ultra-thin speaker module, improving its acoustic performance. In addition, the second opening 21 on the lower shell 2 to accommodate the yoke 51 allows for a smaller overall thickness design for the ultra-thin speaker module.

[0036] Furthermore, the upper shell 1 has a mounting flange 12, which connects to the magnetic circuit assembly.

[0037] As described above, the mounting flange 12 is used to fix the magnetic circuit assembly.

[0038] Furthermore, the mounting flange 12 is positioned close to the edge of the first window 11.

[0039] As can be seen from the above description, the area of ​​the first window 11 can be set to be larger, so that the ultra-thin speaker module has a larger vibration and sound-generating surface, thereby improving the acoustic performance of the ultra-thin speaker module.

[0040] Furthermore, the module housing has a rear cavity 6 that communicates with the magnetic gap, the rear cavity 6 is filled with sound-absorbing particles, the mounting flange 12 is provided with a vent window, and the vent window is provided with a breathable isolation component 7 for isolating the sound-absorbing particles.

[0041] As described above, filling the rear cavity 6 with sound-absorbing particles helps improve the low-frequency sound effect of the ultra-thin speaker module, thereby enhancing its acoustic performance. The breathable insulating component 7 isolates the sound-absorbing particles, preventing them from entering the magnetic gap and ensuring the operational stability of the ultra-thin speaker module.

[0042] Furthermore, the breathable insulating component 7 is a metal mesh, a mesh fabric, or a breathable sponge.

[0043] As can be seen from the above description, the specific types of breathable insulating components 7 can be selected according to actual needs, which helps to enrich the diversity of ultra-thin speaker modules.

[0044] Furthermore, the module housing is provided with an injection hole that communicates with the rear cavity 6, and a barrier plate 8 is provided at the injection hole.

[0045] As described above, when manufacturing an ultra-thin speaker module, sound-absorbing particles can be injected into the rear cavity 6 through the injection hole, and then the injection hole can be sealed with a barrier plate 8 to prevent the sound-absorbing particles in the rear cavity 6 from escaping out of the rear cavity 6 through the injection hole.

[0046] Furthermore, the rear cavity 6 is in the shape of a ring frame.

[0047] As can be seen from the above description, the rear cavity is continuous, which is conducive to the filling of sound-absorbing particles.

[0048] Furthermore, the magnetic circuit assembly also includes a central magnetic structure 52 and a side magnetic structure 53 respectively disposed on the yoke 51. The side magnetic structure 53 is disposed around the central magnetic structure 52, and a magnetic gap is formed between the side magnetic structure 53 and the central magnetic structure 52. The mounting flange 12 connects the side magnetic structure 53.

[0049] Furthermore, the lower shell 2 is made of metal sheet.

[0050] As can be seen from the above description, the lower shell 2 made of metal sheet can increase the volume of the rear cavity 6, thereby further improving the performance of the ultra-thin speaker module.

[0051] Furthermore, the lower shell 2 is provided with a reinforcing protrusion 22.

[0052] As can be seen from the above description, the presence of the reinforcing convex hull 22 can improve the structural strength of the lower shell 2.

[0053] Please refer to Figures 1 to 3The first embodiment of this utility model is an ultra-thin speaker module, including a module housing, a vibration component, and a magnetic circuit component. The module housing includes an upper shell 1 and a lower shell 2 connected together. The upper shell 1 has a first opening 11, and the lower shell 2 has a second opening 21 corresponding to the first opening 11. The vibration component includes a diaphragm component 3 and a voice coil 4 connected together. The diaphragm component 3 is connected to the upper shell 1 and closes the first opening 11. The magnetic circuit component is connected to the module housing and has a magnetic gap for the voice coil 4 to move. The magnetic circuit component includes a yoke 51, and the yoke 51 is located at the second opening 21.

[0054] In this embodiment, the magnetic circuit assembly further includes a central magnetic structure 52 and a side magnetic structure 53 respectively disposed on the yoke 51. The side magnetic structure 53 is arranged around the central magnetic structure 52, and a magnetic gap is formed between the side magnetic structure 53 and the central magnetic structure 52. The mounting flange 12 connects the side magnetic structure 53. Specifically, the central magnetic structure 52 includes a central magnet and a central washer, and the central magnet connects the central washer to the yoke 51. The side magnetic structure 53 includes a side magnet and a side washer, and the side magnet connects the yoke 51 to the side washer. In other embodiments, a portion of the yoke 51 can be bent to form a magnetically conductive flange to replace the side magnetic structure 53. In this case, the magnetically conductive flange is fixedly connected to the upper shell 1.

[0055] To facilitate the assembly of the magnetic circuit assembly with the upper shell 1, the upper shell 1 has a mounting flange 12, which connects to the magnetic circuit assembly. Preferably, the mounting flange 12 is located near the edge of the first window 11.

[0056] The module housing has a rear cavity 6 that connects to the magnetic gap. Preferably, the rear cavity 6 is in the shape of a ring frame. The rear cavity 6 is filled with sound-absorbing particles. The mounting flange 12 is provided with a vent window that connects the rear cavity 6 and the magnetic gap. A breathable isolation component 7 is provided at the vent window to isolate the sound-absorbing particles. The breathable isolation component 7 is a metal mesh, mesh fabric, or breathable sponge.

[0057] In detail, the module housing is provided with an injection hole that communicates with the rear cavity 6, and a barrier plate 8 is provided at the injection hole to seal the injection hole.

[0058] To make the ultra-thin speaker module thinner while increasing the overall volume of the rear cavity 6, in this embodiment, the lower shell 2 is made of metal sheet. To improve the structural strength of the lower shell 2, a reinforcing protrusion 22 is provided on the lower shell 2.

[0059] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An ultra-thin loudspeaker module, characterized in that, The application relates to a loudspeaker module. The loudspeaker module comprises a module shell, a vibration assembly and a magnetic circuit assembly. The module shell comprises an upper shell and a lower shell connected together, the upper shell is provided with a first window, and the lower shell is provided with a second window corresponding to the first window. The vibration assembly comprises a diaphragm assembly and a voice coil connected together, the diaphragm assembly is connected to the upper shell and covers the first window.

2. The ultra-thin loudspeaker module of claim 1, wherein, The magnetic circuit assembly is connected to the module shell, and the magnetic circuit assembly has a magnetic gap for the voice coil to move in, the magnetic circuit assembly comprises a yoke, and the yoke is located at the second window.

3. The ultra-thin loudspeaker module of claim 2, wherein, The upper shell is provided with a mounting flange connected to the magnetic circuit assembly.

4. The ultra-thin loudspeaker module of claim 2, wherein, The mounting flange is arranged close to the edge of the first window.

5. The ultra-thin loudspeaker module of claim 4, wherein, The module shell is provided with a rear cavity communicating with the magnetic gap, the rear cavity is filled with sound-absorbing particles, the mounting flange is provided with a gas-permeable window, and the gas-permeable window is provided with a gas-permeable isolation piece for isolating the sound-absorbing particles.

6. The ultra-thin loudspeaker module of claim 4, wherein, The gas-permeable isolation piece is a metal mesh, a mesh cloth or a gas-permeable sponge.

7. The ultra-thin loudspeaker module of claim 4, wherein, The module shell is provided with a filling hole communicating with the rear cavity, and the filling hole is provided with a blocking sheet. 8.The ultra-thin loudspeaker module of claim 2, wherein, The rear cavity is in the shape of a ring frame.

9. The ultra-thin loudspeaker module of claim 1, wherein, The magnetic circuit assembly further comprises a center magnetic structure and an edge magnetic structure arranged on the yoke respectively, the edge magnetic structure surrounds the center magnetic structure, the magnetic gap is formed between the edge magnetic structure and the center magnetic structure, and the mounting flange is connected to the edge magnetic structure.

10. The ultra-thin loudspeaker module of claim 9, wherein, The lower shell is made of a metal plate. The lower shell is provided with a reinforcing convex block.

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