Loudspeaker module and electronic device

Abstract

The present application relates to the technical field of electronic devices, and provides a loudspeaker module and an electronic device, for use in solving the problem of low assembly efficiency of the loudspeaker module. The loudspeaker module comprises a housing, an inner core, and a partition mesh. The housing defines an accommodating space having an opening. The accommodating space comprises a first cavity and a second cavity. The second cavity is arranged at the periphery of the first cavity. At least part of the first cavity is arranged opposite to the opening. The inner core comprises a magnetic bowl. The magnetic bowl is arranged in the first cavity, and the magnetic bowl is opposite to the opening. The partition mesh is arranged between the first cavity and the second cavity. Air holes are formed in the partition mesh. The air holes enable the first cavity to be communicated with the second cavity. The housing comprises a first cover body having an opening and a second cover body arranged opposite to the first cover body. The partition mesh and the first cover body are integrally formed, and / or the partition mesh and the second cover body are integrally formed.

Description

Speaker modules and electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on June 12, 2023, with application number 202321499087.2 and invention name “Speaker Module and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the technical field of electronic devices, and in particular to a speaker module and an electronic device. Background Art

[0003] Speaker modules are used to convert audio electrical signals such as music and voice into sound for playback, and therefore have been increasingly widely used in electronic devices such as mobile phones, tablets, and laptops.

[0004] In the related art, the assembly process of the speaker module is relatively complicated, resulting in a low assembly efficiency of the speaker module.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide a speaker module and an electronic device for solving the problem of low assembly efficiency of the speaker module.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, the present application provides a speaker module. The speaker module includes a shell, a core, and a partition. The shell encloses a storage space having an opening. The storage space includes a first cavity and a second cavity. The second cavity is arranged on the periphery of the first cavity. At least a portion of the first cavity is arranged opposite to the opening. The core includes a magnetic bowl. The magnetic bowl is arranged in the first cavity, and the magnetic bowl is opposite to the opening. The partition is arranged between the first cavity and the second cavity. Air holes are formed on the partition. The air holes connect the first cavity and the second cavity. The shell includes a first cover body having an opening, and a second cover body arranged opposite to the first cover body. The partition is integrally formed with the first cover body; and / or the partition is integrally formed with the second cover body.

[0009] The speaker module of the embodiment of the present application sets the magnetic bowl of the core in the first cavity and makes the magnetic bowl face the opening on the shell so that the magnetic bowl can be exposed, so that the shell does not need to completely cover the core, thereby reducing the thickness of the speaker module, which is conducive to the thinning of the speaker module and further to reducing the thickness of the electronic device. At the same time, the partition net set between the first cavity and the second cavity is integrally formed with the first cover body, and / or the partition net is integrally formed with the second cover body, which can improve their connection strength and simplify the assembly steps of the speaker module, thereby helping to improve the assembly efficiency of the speaker module. It can also avoid the extra components occupying the space of the second cavity in the related art, thereby helping to improve the low-frequency performance of the speaker module.

[0010] In one possible implementation, when the partition net is integrally formed with the first cover body, the first cover body includes a first connecting segment, a second connecting segment extending from the edge of the first connecting segment in a direction away from the second cover body, and a third connecting segment connected to the end of the second connecting segment, the third connecting segment is parallel to the first connecting segment, and the third connecting segment is connected to the partition net.

[0011] In this way, the volume of the space defined between the third connecting section and the first connecting section can be increased, and the height of the partition net can be increased, which is beneficial to improving the low-frequency performance and sound loudness of the speaker module, and further beneficial to improving the user experience.

[0012] In one possible implementation, the speaker module further includes: a first connecting member, the first connecting member simultaneously connecting the partition net and the second cover body, and a portion of the first connecting member extends into a side of the inner core away from the opening and abuts against the inner core.

[0013] Thus, the partition net and the second cover can be connected by the first connecting member while supporting the inner core, which can avoid the need for additional components to support the inner core, thereby helping to reduce costs.

[0014] In one possible implementation, along the thickness direction of the speaker module, the thickness of the third connecting section is greater than or equal to 0.03 mm.

[0015] By limiting the thickness of the third connecting section, the height of the partition net can be increased while ensuring the structural strength of the third connecting section, so that the air permeability area between the first cavity and the second cavity can be larger.

[0016] In a possible implementation manner, an orthographic projection of an outer contour of the vent hole on a plane perpendicular to the first connecting segment at least partially overlaps with an orthographic projection of the second connecting segment on a plane perpendicular to the first connecting segment.

[0017] Therefore, the overlapping part of the orthographic projection of the partition net on the plane perpendicular to the first connecting section and the orthographic projection of the second connecting section on the plane perpendicular to the first connecting section can be additionally provided with air holes, so that the total opening area of ​​the air holes on the partition net can be increased, which is beneficial to improving the air flow between the first cavity and the second cavity, thereby helping to improve the low-frequency performance of the speaker module.

[0018] In one possible implementation, when the partition net and the second cover body are integrally formed, the second cover body includes a fourth connecting segment, a fifth connecting segment extending from the edge of the fourth connecting segment in a direction away from the first cover body, and a sixth connecting segment connected to the end of the fifth connecting segment, wherein the fourth connecting segment is connected to the partition net and is arranged opposite to the first cover body, and the sixth connecting segment extends to the side of the inner core away from the opening and abuts against the inner core.

[0019] This increases the volume of the second cavity and the height of the partition, thereby improving the low-frequency performance and sound loudness of the speaker module, thereby improving the user experience and facilitating the installation of the core.

[0020] In one possible implementation, in the thickness direction of the speaker module, a distance between an edge of the fourth connecting segment close to the first cover body and an edge of the sixth connecting segment away from the first cover body is greater than or equal to 0.12 mm.

[0021] By limiting the distance between the edge of the fourth connecting segment close to the first cover body and the edge of the sixth connecting segment away from the first cover body, the height of the partition net can be increased while ensuring the structural strength of the second cover body, so that the air permeability area between the first cavity and the second cavity can be larger.

[0022] In one possible implementation, there are multiple air holes in the thickness direction of the speaker module, and there is a first spacing between the centers of some of the air holes and the edge of the first cover body. The first spacing is greater than or equal to 0 and less than or equal to 0.25 mm.

[0023] Therefore, by limiting the value range of the first spacing, the partition net can make full use of the area covered in the relevant technology, so that the total opening area of ​​the air holes set on the partition net can be increased, which is beneficial to improving the flow of air between the first cavity and the second cavity, and further beneficial to improving the low-frequency performance and sound loudness of the speaker module.

[0024] In a possible implementation, there is a second distance between the center of some of the air holes and the edge of the second cover body, and the second distance is greater than or equal to 0 and less than or equal to 0.25 mm.

[0025] Therefore, by limiting the value range of the second spacing, the partition net can make full use of the area covered in the relevant technology, so that the total opening area of ​​the air holes set on the partition net can be increased, which is beneficial to improving the flow of air between the first cavity and the second cavity, and further beneficial to improving the low-frequency performance and sound loudness of the speaker module.

[0026] In one possible implementation, a first distance is defined between the center of some of the air holes and the edge of the first cover, and the first distance is greater than or equal to 0 and less than or equal to 0.25 mm. A second distance is defined between the center of some of the air holes and the edge of the second cover, and the second distance is greater than or equal to 0 and less than or equal to 0.25 mm.

[0027] Therefore, by limiting the value range of the first spacing and the second spacing, the total opening area of ​​the air holes set on the partition net can be increased, which is beneficial to improving the flow of air between the first cavity and the second cavity, and further beneficial to improving the low-frequency performance and sound loudness of the speaker module.

[0028] In a possible implementation, the ratio of the total opening area of ​​the ventilation holes to the area of ​​the partition mesh is greater than or equal to 50%.

[0029] By limiting the ratio of the total area of ​​the air vent openings to the area of ​​the partition, the area of ​​air flow between the first cavity and the second cavity can be guaranteed, so that the low-frequency performance and sound loudness of the speaker module can be guaranteed, which is conducive to improving the user experience.

[0030] In one possible implementation, at least one of the first cover, the partition net, and the second cover is made of steel.

[0031] Due to the high structural strength of steel, it can be made thinner while maintaining structural strength. At the same time, it is easy to process and helps reduce costs.

[0032] In a second aspect, the present application provides an electronic device comprising a screen, a back shell, a circuit board, and a speaker module according to any of the above technical solutions. The screen comprises a light-transmitting cover plate and a display screen arranged in a stacked manner. The back shell comprises a frame and a back cover. The light-transmitting cover plate, the frame, and the back cover together enclose a storage space for the electronic device. The display screen, the circuit board, and the speaker module are located within the storage space. The core of the speaker module is electrically connected to the circuit board. A sound outlet is provided in the frame. The sound outlet channel of the speaker module is connected to the sound outlet.

[0033] Among them, the technical effects brought about by any design method in the second aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a perspective view of an electronic device provided in an embodiment of the present application;

[0035] FIG2 is an exploded view of an electronic device provided in an embodiment of the present application;

[0036] FIG3 is a schematic diagram of a cross-sectional structure of the electronic device described in FIG1 along line AA;

[0037] FIG4 is an exploded view of a speaker module provided in an embodiment of the present application;

[0038] FIG5 is a schematic structural diagram of a speaker module in the related art;

[0039] FIG6 is a cross-sectional view of a speaker module provided in an embodiment of the present application;

[0040] FIG7 is a partial perspective view of a first speaker module provided in an embodiment of the present application;

[0041] FIG8 is a partial perspective view of a second speaker module provided in an embodiment of the present application;

[0042] FIG9 is a partial perspective view of a third speaker module provided in an embodiment of the present application;

[0043] FIG10 is a schematic diagram of a cross-sectional structure of the speaker module along line BB described in FIG7 ;

[0044] FIG11 is a schematic diagram of a cross-sectional structure of the speaker module along the CC direction described in FIG8 ;

[0045] FIG12 is a schematic diagram of a cross-sectional structure of the speaker module along the DD direction described in FIG9 ;

[0046] FIG13 is a performance comparison diagram of Solution A and Solution B provided in an embodiment of the present application in a cavity state;

[0047] FIG14 is a performance comparison diagram of Solution A and Solution B provided in an embodiment of the present application after filling 0.15cc of powder;

[0048] FIG15 is a performance comparison diagram of Solution A and Solution B provided in an embodiment of the present application after filling 0.2cc of powder.

[0049] Reference numerals: 100, electronic device; 10, screen; 11, light-transmitting cover; 12, display screen; 20, back shell; 21, back cover; 22, frame; 221, sound outlet; 23, middle plate; 30, circuit board; 31, main circuit board; 32, auxiliary circuit board; 40. Speaker module; 41. Shell; 411. First cover; 4111. First connecting section; 4112. Second connecting section; 4113. Third connecting section; 412. Second cover; 4121. Fourth connecting section; 4122. Fifth connecting section; 4123. Sixth connecting section; 42. Core; 421. Magnetic bowl; 43. Partition; 431. Air vent; 44. Accommodating space; 441. First cavity; 442. Second cavity; 443. Opening; 45. First connecting member; 451. First section; 452. Second section; 46. Sound outlet; 47. Second connecting member; 50. Connecting structure. DETAILED DESCRIPTION

[0050] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being more preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0051] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0052] In the description of the embodiments of this application, the term "and / or" refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects are in an "or" relationship.

[0053] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside" and "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0054] An embodiment of the present application provides an electronic device, which is a type of electronic device having a speaker module. Specifically, the electronic device includes, but is not limited to, mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, notebook computers, vehicle-mounted devices, wearable devices, walkmans, radios, and other electronic devices. Among them, wearable devices include, but are not limited to, smart bracelets, smart watches, smart head-mounted displays, smart glasses, and the like.

[0055] Please refer to Figure 1, which is a three-dimensional diagram of an electronic device provided in an embodiment of the present application. The embodiment of the present application and the embodiments below are exemplified by taking the electronic device as a mobile phone. The electronic device is approximately in the shape of a rectangular plate. On this basis, in order to facilitate the description of the embodiments below, an XYZ coordinate system is established, and the width direction of the electronic device is defined as the X-axis direction, the length direction of the electronic device is defined as the Y-axis direction, and the thickness direction of the electronic device is defined as the Z-axis direction. It can be understood that the coordinate system direction of the electronic device can be flexibly set according to actual needs, and is not specifically limited here. In some other embodiments, the shape of the electronic device can be a square flat plate, a circular flat plate, an elliptical flat plate, etc., which are not specifically limited here.

[0056] Please refer to Figure 1 and Figure 2 together. Figure 2 is an exploded view of an electronic device provided by the present application. In this embodiment, the electronic device 100 includes a screen 10, a back cover 20, a circuit board 30, and a speaker module 40.

[0057] It is understood that Figures 1 and 2 only schematically illustrate some components of the electronic device 100, and the actual shape, size, position, and structure of these components are not limited by Figures 1 and 2 and the following figures. In some other embodiments, the electronic device 100 may not include the screen 10.

[0058] The screen 10 is used to display images, videos, etc. The screen 10 includes a transparent cover plate 11 and a display screen 12. The transparent cover plate 11 and the display screen 12 are stacked and fixedly connected. The transparent cover plate 11 is mainly used to protect the display screen 12 and prevent dust. The material of the transparent cover plate 11 includes but is not limited to glass. The display screen 12 can be a flexible display screen or a rigid display screen. For example, the display screen 12 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a quantum dot light emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0059] The back shell 20 forms the shell of the electronic device and is used to protect the internal electronic components of the electronic device 100. The back shell 20 may include a back cover 21 and a frame 22. The back cover 21 is located on the side of the display screen 12 away from the transparent cover plate 11, and is stacked with the transparent cover plate 11 and the display screen 12 and spaced apart. The frame 22 is located between the back cover 21 and the transparent cover plate 11. The frame 22 can be fixed to the back cover 21. For example, the frame 22 can be fixed to the back cover 21 by adhesive. The frame 22 can also be an integrally molded structure with the back cover 21, that is, the frame 22 and the back cover 21 are a single structural component. The transparent cover plate 11 can be fixed to the frame 22 by adhesive. The transparent cover plate 11, the back cover 21 and the frame 22 together enclose a storage space for the electronic device 100. The storage space accommodates the display screen 12, the circuit board 30 and the speaker module 40.

[0060] Please continue to refer to Figure 2. In some embodiments, the back shell 20 may further include a middle plate 23. The middle plate 23 is arranged in the above-mentioned storage space, and the middle plate 23 is located on the side of the display screen 12 away from the light-transmitting cover plate 11. The edge of the middle plate 23 is fixed to the frame 22. In some embodiments, the edge of the middle plate 23 can be fixed to the frame 22 by gluing, and the middle plate 23 can also be an integrally formed structure with the frame 22, that is, the middle plate 23 and the frame 22 are a whole structural component. The display screen 12 can be located on the side of the middle plate 23 close to the light-transmitting cover plate 11, and the circuit board 30 and the speaker module 40 can be located on the side of the middle plate 23 close to the back cover 21. It should be noted that the whole formed by connecting the middle plate 23 and the frame 22 is also called the middle frame. In some other embodiments, the back shell 20 may also not include the middle plate 23.

[0061] The circuit board 30 is used to house electronic components and establish electrical connections between them. In some embodiments, referring to Figure 2 , the circuit board 30 may include a main circuit board 31 and a secondary circuit board 32. The main circuit board 31 and the secondary circuit board 32 are disposed within the space between the midplane 23 and the back cover 21 and are stacked with the back cover 21. In some embodiments, referring to Figure 2 , both the main circuit board 31 and the secondary circuit board 32 are secured to the midplane 23.

[0062] The main circuit board 31 is used to integrate a control chip. The control chip may be, for example, an application processor (AP), double data rate synchronous dynamic random access memory (DDR), and universal flash storage (UFS). In some embodiments, the main circuit board 31 is electrically connected to the display screen 12 and is used to control the display screen 12 to display images or videos.

[0063] The main circuit board 31 can be a rigid circuit board, a flexible circuit board, or a combination of rigid and flexible circuit boards. The main circuit board 31 can be made of FR-4 dielectric board, Rogers dielectric board, or a combination of FR-4 and Rogers dielectric board. FR-4 is a flame-retardant material grade, and Rogers dielectric board is a high-frequency board.

[0064] The auxiliary circuit board 32 is used to integrate electronic components such as the antenna (such as a 5G antenna) radio frequency front end, universal serial bus (USB) devices, and vibrators.

[0065] The auxiliary circuit board 32 may be a rigid circuit board, a flexible circuit board, or a rigid-flexible circuit board.

[0066] The auxiliary circuit board 32 can be made of a FR-4 dielectric board, a Rogers dielectric board, or a mixed dielectric board of FR-4 and Rogers, etc.

[0067] The auxiliary circuit board 32 is electrically connected to the main circuit board 31 via a connection structure 50 to enable data and signal transmission between the auxiliary circuit board 32 and the main circuit board 31. The connection structure 50 includes, but is not limited to, a flexible printed circuit (FPC), a wire, an enameled wire, or a structure formed by braiding a wire and a flexible material.

[0068] The speaker module 40 is located on the inner side of the back shell 20. The inner side of the back shell 20 refers to the side of the back shell 20 facing the aforementioned storage space. The speaker module 40 is electrically connected to the circuit board 30. Specifically, the speaker module 40 can be electrically connected to the main circuit board 31 or the auxiliary circuit board 32. This allows the speaker module 40 to capture audio signals, such as music and speech, from the circuit board 30 and convert them into sound for playback.

[0069] Please refer to Figure 3, which is a schematic cross-sectional view of the electronic device 100 shown in Figure 1 along the AA direction. The speaker module 40 has a sound output channel 46. The sound signal output by the speaker module 40 is output through the sound output channel 46. The frame 22 is provided with a sound output hole 221. The sound output from the sound output channel 46 is further output through the sound output hole 221 to the outside of the electronic device 100.

[0070] Please refer to Figure 4, which is an exploded view of a speaker module 40 provided in an embodiment of the present application. In some embodiments, the speaker module 40 includes a housing 41, a core 42, and a screen 43. The housing 41 includes a first cover 411 and a second cover 412 disposed opposite to each other.

[0071] Please refer to Figure 5, which is a schematic diagram of the structure of a speaker module in the related art. In the related art, the screen and housing of the speaker module are separate molded parts, requiring additional components to connect the screen to the housing. This additional component connection increases the difficulty of speaker module assembly, reducing assembly efficiency. Furthermore, this component also covers part of the screen surface, reducing the area available for ventilation holes. For example, when connecting the screen to the first and second covers using plastic, the screen, first and second covers must first be positioned before the plastic is connected, slowing down assembly efficiency. When the plastic connects the screen to the first cover, it covers an area of ​​the screen surface dimension W1, reducing the screen surface area by dimension W1. When the plastic connects the screen to the second cover, it covers an area of ​​the screen surface dimension W2, reducing the screen surface area by dimension W2. This reduces the screen height and reduces the area available for ventilation holes. It should be noted that the relevant technology may not be a public document.

[0072] Please refer to Figure 6, which is a cross-sectional view of a speaker module 40 provided in an embodiment of the present application. To address the aforementioned technical issues, the present application provides a speaker module 40. A housing 41 defines a receiving space 44 having an opening 443. The opening 443 allows the receiving space 44 to communicate with the space outside the housing 41.

[0073] The housing 41 includes a first cover 411 having an opening 443 and a second cover 412 disposed opposite the first cover 411. Specifically, in the thickness direction of the speaker module 40 (the Z-axis direction as shown in FIG6 ), the first cover 411 and the second cover 412 are disposed opposite each other.

[0074] In the above embodiment, the thickness direction of the speaker module 40 refers to the direction that is consistent with the thickness direction of the electronic device 100 when the speaker module 40 is installed in the electronic device 100. The thickness direction of the speaker module 40 is also the Z-axis direction mentioned above.

[0075] The accommodating space 44 includes a first cavity 441 and a second cavity 442. The second cavity 442 is arranged on the periphery of the first cavity 441. Exemplarily, the second cavity 442 can be arranged around the periphery of the first cavity 441. Exemplarily, the second cavity 442 can be filled with sound-absorbing particles. The sound-absorbing particles can improve the low-frequency performance and sound loudness of the speaker module 40 without increasing the physical volume of the second cavity 442 of the speaker module 40. The material of the sound-absorbing particles includes but is not limited to one or more of melamine, zeolite particles, glass fiber, and activated carbon.

[0076] At least a portion of the first cavity 441 is disposed opposite the opening 443. Specifically, a portion of the first cavity 441 may be disposed opposite the opening 443. Alternatively, the entire first cavity 441 may be disposed opposite the opening 443. The phrase "at least a portion of the first cavity 441 is disposed opposite the opening 443" means that the orthographic projection of the outer contour of at least a portion of the first cavity 441 on the plane where the opening 443 lies lies within the outer contour of the opening 443.

[0077] The inner core 42 includes a magnetic bowl 421. The magnetic bowl 421 is arranged in the first cavity 441, and the magnetic bowl 421 is opposite to the opening 443. Specifically, the inner core 42 can be arranged as a whole in the first cavity 441. Since the thickness of the inner core 42 itself is relatively large, in order to avoid increasing the thickness of the speaker module 40 by adding the shell 41 on both sides of the inner core 42 along the Z-axis direction, the magnetic bowl 421 is exposed by making it opposite to the opening 443, so that the shell 41 does not need to completely cover the inner core 42, thereby reducing the thickness of the speaker module 40, which is beneficial to the thinning of the speaker module 40, and further beneficial to reducing the thickness of the electronic device 100.

[0078] It should be noted that the inner core 42 can be used to seal the opening 443. Specifically, the inner edge of the opening 443 forms a sealed connection with the inner core 42. The sealed connection between the inner edge of the opening 443 and the inner core 42 can be sealed by filling with a sealant. Sealing with a sealant is convenient and suitable for sealing gaps of various shapes, thus having a wide range of applications. Examples of sealants include, but are not limited to, one or more of: shadowless adhesive, polyurethane, silicone rubber, polysulfide rubber, chloroprene rubber, and epoxy resin sealants.

[0079] Please refer to Figure 7, which is a partial perspective view of the first speaker module 40 provided in an embodiment of the present application. A partition 43 is disposed between a first cavity 441 and a second cavity 442. Air holes 431 are formed in the partition 43. Air holes 431 connect the first cavity 441 and the second cavity 442. In other words, airflow within the first cavity 441 can flow into the second cavity 442 through the air holes 431.

[0080] The size of the air holes 431 must be smaller than the size of the sound-absorbing particles. Therefore, because the sound-absorbing particles are located on the side of the screen 43 away from the core 42, and the air holes 431 are smaller than the size of the sound-absorbing particles, the screen 43 can prevent the sound-absorbing particles from entering the core 42 while connecting the first cavity 441 and the second cavity 442. This prevents the screen 43 from interfering with the movement of the core 42, which helps improve the reliability of the speaker module 40.

[0081] In some embodiments, the screen 43 can be integrally formed with the first cover 411. This arrangement can enhance the connection strength between the screen 43 and the first cover 411 and simplify the assembly steps of the speaker module 40, thereby improving the assembly efficiency of the speaker module 40. Furthermore, the connection between the screen 43 and the first cover 411 is not covered, thereby increasing the area available for the air holes 431 on the screen 43 compared to related art.

[0082] When the partition net 43 and the first cover body 411 are integrally formed, a guide slope may be provided at the connection between the partition net 43 and the first cover body 411 , so that the filling of the sealant is facilitated.

[0083] Please refer to Figure 8, which is a partial stereoscopic view of the second speaker module 40 provided in an embodiment of the present application. In other embodiments, the partition net 43 can be integrally formed with the second cover body 412. This arrangement can improve the connection strength between the partition net 43 and the second cover body 412 and simplify the assembly steps of the speaker module 40, thereby facilitating improved assembly efficiency of the speaker module 40. At the same time, the connection between the partition net 43 and the second cover body 412 will not be covered, so that the area of ​​the air vents 431 on the partition net 43 can be increased compared to the related art.

[0084] Please refer to Figure 9, which is a partial perspective view of a third speaker module 40 provided in an embodiment of the present application. In yet other embodiments, the partition net 43 can be integrally formed with the first cover 411 and the second cover 412. This arrangement can improve the connection strength between the partition net 43 and the first and second covers 411 and 412, and can further simplify the assembly steps of the speaker module 40, thereby improving the assembly efficiency of the speaker module 40. At the same time, the area of ​​the partition net 43 that can be provided with the air vents 431 can be increased compared to the related art.

[0085] According to the speaker module 40 of the embodiment of the present application, the magnetic bowl 421 of the core 42 is disposed within the first cavity 441, with the magnetic bowl 421 facing the opening 443 of the housing 41, allowing the magnetic bowl 421 to be exposed. This eliminates the need for the housing 41 to completely enclose the core 42, thereby reducing the thickness of the speaker module 40 and, in turn, the thickness of the electronic device 100. Furthermore, the partition 43 disposed between the first cavity 441 and the second cavity 442 is integrally formed with the first cover 411, and / or the partition 43 is integrally formed with the second cover 412. This improves the connection strength and simplifies the assembly steps of the speaker module 40, thereby improving the assembly efficiency of the speaker module 40. Furthermore, it avoids the need for additional components to occupy space in the second cavity 442, as in the related art, thereby improving the low-frequency performance of the speaker module 40.

[0086] Please refer to Figure 10, which is a schematic diagram of the cross-sectional structure of the speaker module 40 described in Figure 7 along the BB direction. In some embodiments, when the partition net 43 is integrally formed with the first cover body 411, the first cover body 411 includes a first connecting segment 4111, a second connecting segment 4112 extending from the edge of the first connecting segment 4111 in a direction away from the second cover body 412, and a third connecting segment 4113 connected to the end of the second connecting segment 4112. The third connecting segment 4113 is parallel to the first connecting segment 4111. The third connecting segment 4113 is connected to the partition net 43. Specifically, the first connecting segment 4111, the second connecting segment 4112, and the third connecting segment 4113 are connected in sequence, wherein one end of the second connecting segment 4112 is connected to the first connecting segment 4111, and the other end of the second connecting segment 4112 extends in a direction away from the second cover body 412 and is connected to the third connecting segment 4113. Since the partition net 43 and the first cover body 411 are integrally formed, and the second connecting section 4112 is tilted, and the third connecting section 4113 is parallel to the first connecting section 4111, compared with the original second cavity 442, the volume of the space defined between the third connecting section 4113 and the first connecting section 4111 can be increased, and the height of the partition net 43 can also be increased, which is beneficial to improving the low-frequency performance and sound loudness of the speaker module 40, and further beneficial to improving the user experience.

[0087] Here, “parallel” means approximately parallel within a certain error range, and the error range can be a range where the deviation angle relative to absolute parallelism is less than or equal to 5°.

[0088] Continuing with Figure 10 , in some embodiments, the thickness H1 of the third connecting segment 4113 along the thickness direction of the speaker module 40 is greater than or equal to 0.03 mm. By limiting the thickness H1 of the third connecting segment 4113, the height of the partition 43 can be increased while maintaining the structural strength of the third connecting segment 4113, thereby increasing the ventilation area between the first cavity 441 and the second cavity 442.

[0089] For example, along the thickness direction of the speaker module 40 , the thickness H1 of the third connecting section 4113 may be 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, or 0.08 mm.

[0090] Continuing with FIG. 10 , in some embodiments, the orthographic projection of the outer contour of the air vent 431 on a plane perpendicular to the first connecting segment 4111 at least partially overlaps with the orthographic projection of the second connecting segment 4112 on a plane perpendicular to the first connecting segment 4111. Thus, additional air vents 431 can be provided in the overlapping portion of the orthographic projection of the screen 43 on a plane perpendicular to the first connecting segment 4111 and the orthographic projection of the second connecting segment 4112 on a plane perpendicular to the first connecting segment 4111. This increases the total opening area of ​​the air vents 431 on the screen 43, facilitating improved airflow between the first cavity 441 and the second cavity 442, thereby enhancing the low-frequency performance of the speaker module 40.

[0091] Please continue to refer to Figure 10. In some embodiments, the speaker module 40 also includes a first connecting member 45. The first connecting member 45 connects the partition net 43 and the second cover body 412 at the same time. Part of the first connecting member 45 extends into the side of the core 42 away from the opening 443 and abuts against the core 42. Specifically, part of the partition net 43 extends into the first connecting member 45, so that the partition net 43 is connected to the first connecting member 45, and part of the second cover body 412 extends into the first connecting member 45, so that the second cover body 412 is connected to the first connecting member 45. In this way, the core 42 can be supported while the partition net 43 and the second cover body 412 are connected by the first connecting member 45, which can avoid the need to set up additional components to support the core 42, thereby helping to reduce costs.

[0092] The first connecting member 45 may be made of plastic, including but not limited to polycarbonate (PC), PC+glass fiber, and ABS plastic (acrylonitrile butadiene styrene plastic).

[0093] Exemplarily, the first connector 45 is formed in a horizontal "L" shape and includes a first section 451 and a second section 452 that are sequentially connected. The first section 451 connects both the screen 43 and the second cover 412, while the second section 452 extends away from the second cavity 442 and into the side of the inner core 42 away from the opening 443, thereby abutting against the inner core 42.

[0094] Please refer to Figure 11, which is a schematic diagram of the cross-sectional structure of the speaker module 40 described in Figure 8 along the CC direction. In some embodiments, when the partition net 43 is integrally formed with the second cover body 412, the second cover body 412 includes a fourth connecting segment 4121, a fifth connecting segment 4122 extending from the edge of the fourth connecting segment 4121 in a direction away from the first cover body 411, and a sixth connecting segment 4123 connected to the end of the fifth connecting segment 4122. The fourth connecting segment 4121 is connected to the partition net 43 and is arranged opposite to the first cover body 411, and the sixth connecting segment 4123 extends to the side of the core 42 away from the opening 443 and abuts against the core 42. Specifically, the fourth connecting segment 4121, the fifth connecting segment 4122 and the sixth connecting segment 4123 can define a positioning step for positioning the core 42. Because the screen 43 and the second cover 412 are integrally formed, the volume of the second cavity 442 can be increased compared to related art, and the height of the screen 43 can also be increased, thereby improving the low-frequency performance and sound loudness of the speaker module 40, thereby improving the user experience. It also facilitates the installation of the core 42.

[0095] For example, the fifth connecting segment 4122 and the sixth connecting segment 4123 may be perpendicular to each other. This arrangement can increase the contact area between the sixth connecting segment 4123 and the core 42, thereby ensuring support for the core 42 and improving the reliability of the speaker module 40.

[0096] Continuing with FIG. 11 , in some embodiments, a spacing H2 between an edge of the fourth connecting segment 4121 proximal to the first cover 411 and an edge of the sixth connecting segment 4123 distal to the first cover 411 in the thickness direction of the speaker module 40 is greater than or equal to 0.12 mm. By limiting the spacing H2 between the edge of the fourth connecting segment 4121 proximal to the first cover 411 and the edge of the sixth connecting segment 4123 distal to the first cover 411, the height of the partition 43 can be increased while maintaining the structural strength of the second cover 412, thereby increasing the ventilation area between the first cavity 441 and the second cavity 442.

[0097] For example, the value of the interval H2 may be 0.12 mm, 0.13 mm, 0.14 mm, or 0.15 mm.

[0098] In some embodiments, the speaker module 100 further includes a second connecting member 47, which is connected to both the first cover 411 and the partition 43. The second connecting member 47 is similar to the first connecting member 45 and will not be described in detail here.

[0099] Please refer to Figure 12, which is a schematic diagram of the cross-sectional structure of the speaker module 40 along the DD direction described in Figure 9. In some implementations, when the partition 43 is integrally formed with the first cover 411 and the second cover 412, the above description is the same and will not be repeated here.

[0100] Continuing with FIG. 12 , in some embodiments, the speaker module 40 includes a plurality of air holes 431 in the thickness direction. A first spacing L1 is defined between the center of some of the air holes 431 and the edge of the first cover 411. The first spacing L1 is greater than or equal to 0 and less than or equal to 0.25 mm. Specifically, when the first spacing L1 is equal to 0, the center of the air hole 431 can be located at the edge of the first cover 411, in which case the air hole 431 can be formed in a semicircular shape. Thus, by limiting the range of values ​​for the first spacing L1, the screen 43 can fully utilize the area covered in the related art, increasing the total opening area of ​​the air holes 431 on the screen 43. This helps improve the airflow between the first cavity 441 and the second cavity 442, thereby improving the low-frequency performance and sound loudness of the speaker module 40. The term "plurality" refers to two or more. The first spacing L1 also applies to the embodiment shown in FIG. 10 .

[0101] Exemplarily, the value of the first spacing L1 can be 0mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0mm or 0.25mm, etc.

[0102] Please continue to refer to Figure 12. In other embodiments, there is a second spacing L2 between the center of the air vent 431 and the edge of the second cover 412, and the second spacing L2 is greater than or equal to 0 and less than or equal to 0.25 mm. Specifically, when the second spacing L2 is equal to 0, the center of the air vent 431 can be located at the edge of the second cover 412, and the air vent 431 can be formed in a semicircular shape. Therefore, by limiting the value range of the second spacing L2, the partition net 43 can make full use of the area covered in the related art, so that the total opening area of ​​the air vent 431 on the partition net 43 can be increased, which is conducive to improving the flow of air between the first cavity 441 and the second cavity 442, and further conducive to improving the low-frequency performance and sound loudness of the speaker module 40. Among them, the second spacing L2 is also applicable to the embodiment shown in Figure 11.

[0103] Exemplarily, the value of the second spacing L2 can be 0mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0mm or 0.25mm, etc.

[0104] Please continue to refer to Figure 12. In some other embodiments, there is a first spacing L1 between the center of some of the air holes 431 and the edge of the first cover body 411. The first spacing L1 is greater than or equal to 0 and less than or equal to 0.25 mm. There is a second spacing L2 between the center of some of the air holes 431 and the edge of the second cover body 412, and the second spacing L2 is greater than or equal to 0 and less than or equal to 0.25 mm. This arrangement can increase the total air permeability area of ​​the partition net 43. Therefore, by limiting the value range of the first spacing L1 and the second spacing L2, the total opening area of ​​the air holes 431 set on the partition net 43 can be increased, which is beneficial to improving the flow of air between the first cavity 441 and the second cavity 442, and further beneficial to improving the low-frequency performance and sound loudness of the speaker module 40.

[0105] The following compares the performance of two spacers 43 of different heights in the speaker module 40. In solution A, the height of the spacer 43 is 2 mm, while in solution B, the height of the spacer 43 is 1.6 mm.

[0106] Please refer to Figures 13, 14, and 15. Figure 13 is a performance comparison chart of Scheme A and Scheme B provided in an embodiment of the present application in an empty cavity state. Figure 14 is a performance comparison chart of Scheme A and Scheme B provided in an embodiment of the present application after 0.15cc of powder is filled. Figure 15 is a performance comparison chart of Scheme A and Scheme B provided in an embodiment of the present application after 0.2cc of powder is filled. In Figures 13 to 15, the solid line represents Scheme A, the dashed line represents Scheme B, the horizontal axis represents the frequency of the speaker module 40, and the vertical axis represents the sensitivity of the speaker module 40.

[0107] Table 1 can be obtained by arranging the data in Figures 13, 14, and 15.

[0108] Table 1

[0109] Referring to Table 1, we can see that, when both Plan A and Plan B are filled with 0.15cc of powder, Plan A's sensitivity improves by 0.3dB at a frequency of 200 and by 0.4dB at a frequency of 300. This shows that, with the same powder filling volume, Plan A's low-frequency performance is significantly improved, with an average sensitivity of approximately 0.35dB higher.

[0110] When both Plan A and Plan B were filled with 0.2cc of powder, Plan A's sensitivity improved by 0.3dB at a frequency of 200, 0.5dB at a frequency of 300, and 1dB at a frequency of 500. This shows that, with the same powder filling volume, Plan A's low-frequency performance improved significantly, with an average sensitivity of approximately 0.4dB higher.

[0111] In summary, when the height of the partition net 43 is increased, the number of air holes 431 can be increased, thereby improving the air flow between the first cavity 441 and the second cavity 442, so that the sensitivity of the speaker module 40 can be improved, which is beneficial to improving the low-frequency performance and sound loudness of the speaker module 40.

[0112] In some embodiments, the ratio of the total opening area of ​​the vents 431 to the area of ​​the screen 43 is greater than or equal to 50%. By limiting the ratio of the total opening area of ​​the vents 431 to the area of ​​the screen 43, the area for airflow between the first cavity 441 and the second cavity 442 can be guaranteed, thereby ensuring the low-frequency performance and loudness of the speaker module 40, which is conducive to improving the user experience.

[0113] Exemplarily, the ratio of the total opening area of ​​the air pores 431 to the area of ​​the partition mesh 43 can be 50%, 52%, 55%, 58%, 60%, 62%, 65%, 68%, 70%, 72%, 75%, 78%, 80%, 82%, 85% or 90%, etc.

[0114] In some embodiments, at least one of the first cover 411, the screen 43, and the second cover 412 is made of steel. Steel, due to its high structural strength, can be lightweight while maintaining structural strength. Furthermore, it is easy to manufacture, which helps reduce costs.

[0115] For example, the first cover 411 , the partition 43 , and the second cover 412 may all be made of steel.

[0116] In some embodiments, the second cover 412 may be provided with a filling port (not shown). The shapes of the filling port include, but are not limited to, circular, square, polygonal, etc. The filling port communicates with a portion of the rear cavity. Sound-absorbing particles can be poured into the second cavity 442 through the filling port. The filling port may be provided with a cover to seal the filling port. Specifically, the cover may be bonded to the edge of the first housing 41 at the filling port.

[0117] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A speaker module, characterized in that: include: A housing, wherein the housing encloses a receiving space having an opening, the receiving space comprising a first cavity and a second cavity, the second cavity being arranged at the periphery of the first cavity, and at least a portion of the first cavity being arranged opposite to the opening; A core, the core comprising a magnetic bowl, the magnetic bowl is disposed in the first cavity, and the magnetic bowl is opposite to the opening; A partition net, the partition net is arranged between the first cavity and the second cavity, and a vent hole is formed on the partition net, and the vent hole communicates the first cavity and the second cavity; Wherein, the shell comprises a first cover body having the opening, and a second cover body arranged opposite to the first cover body; the partition net is integrally formed with the first cover body; and / or the partition net is integrally formed with the second cover body.

2. The speaker module according to claim 1, characterized in that: When the partition net is integrally formed with the first cover body, the first cover body includes a first connecting section, a second connecting section extending from the edge of the first connecting section in a direction away from the second cover body, and a third connecting section connected to the end of the second connecting section, the third connecting section is parallel to the first connecting section, and the third connecting section is connected to the partition net.

3. The speaker module according to claim 2, characterized in that: The speaker module further includes: a first connecting member, the first connecting member simultaneously connects the partition net and the second cover body, and a portion of the first connecting member extends into a side of the inner core away from the opening and abuts against the inner core.

4. The speaker module according to claim 2 or 3, characterized in that: Along the thickness direction of the speaker module, the thickness of the third connecting section is greater than or equal to 0.03 mm.

5. The loudspeaker module according to any one of claims 2 to 4, characterized in that: An orthographic projection of an outer contour of the vent hole on a plane perpendicular to the first connecting section at least partially overlaps with an orthographic projection of the second connecting section on a plane perpendicular to the first connecting section.

6. The loudspeaker module according to any one of claims 1 to 5, characterized in that: When the partition net and the second cover body are integrally formed, the second cover body includes a fourth connecting segment, a fifth connecting segment extending from the edge of the fourth connecting segment in a direction away from the first cover body, and a sixth connecting segment connected to the end of the fifth connecting segment, wherein the fourth connecting segment is connected to the partition net and is arranged opposite to the first cover body, and the sixth connecting segment extends to a side of the inner core away from the opening and abuts against the inner core.

7. The speaker module according to claim 6, characterized in that: In the thickness direction of the speaker module, a distance between an edge of the fourth connecting section close to the first cover body and an edge of the sixth connecting section away from the first cover body is greater than or equal to 0.12 mm.

8. The speaker module according to any one of claims 1 to 7, characterized in that: In the thickness direction of the speaker module, there are multiple air holes, and there is a first distance between the centers of some of the air holes and the edge of the first cover body, and the first distance is greater than or equal to 0 and less than or equal to 0.25 mm; and / or, there is a second distance between the centers of some of the air holes and the edge of the second cover body, and the second distance is greater than or equal to 0 and less than or equal to 0.25 mm.

9. The loudspeaker module according to any one of claims 1 to 8, characterized in that: The ratio of the total opening area of ​​the air holes to the area of ​​the partition net is greater than or equal to 50%.

10. The loudspeaker module according to any one of claims 1 to 9, characterized in that: A material of at least one of the first cover, the partition, and the second cover includes steel.

11. An electronic device, characterized in that: include: A screen, a back shell, a circuit board, and a speaker module as described in any one of claims 1 to 10; The screen includes a light-transmitting cover plate and a display screen which are stacked, the back shell includes a frame and a back cover, and the light-transmitting cover plate, the frame and the back cover together enclose a storage space for the electronic device; The display screen, the circuit board, and the speaker module are located in the storage space, the core of the speaker module is electrically connected to the circuit board, a sound outlet hole is provided on the frame, and the sound outlet channel of the speaker module is connected to the sound outlet hole.

Images