Sound production module and electronic device

Abstract

The embodiment of the application provides a sound production module and electronic equipment, and relates to the electronic field. The sound production module comprises a frame, a diaphragm, a magnetic circuit assembly, a first voice coil and a second voice coil. The frame is provided with a receiving cavity. The diaphragm is arranged on one side of the frame and covers the receiving cavity. The magnetic circuit assembly is arranged in the receiving cavity and has a magnetic gap. The first voice coil and the second voice coil are connected with the diaphragm. At least part of the first voice coil and at least part of the second voice coil are arranged in the magnetic gap. When the first voice coil or the second voice coil is in a working state, the diaphragm is driven to move.

Description

Technical Field

[0001] This application belongs to the field of electronics, and in particular relates to a sound-generating module and an electronic device. Background Technology

[0002] With the rapid development of electronic technology, smartphones and tablets have become increasingly popular and are gradually becoming an indispensable part of people's daily lives. To meet people's ever-increasing demands for electronic devices...

[0003] As electronic devices become increasingly thinner and lighter, the volume of sound modules is also decreasing. Ordinary sound modules generate a lot of heat during operation, and if the heat cannot be dissipated in time, it can lead to damage to electronic devices. Summary of the Invention

[0004] This application provides a sound-generating module and an electronic device, which can at least solve the problem of high heat generation in the sound-generating module.

[0005] An embodiment of this application provides a sound-generating module, including a frame, a diaphragm, a magnetic circuit assembly, a first voice coil, and a second voice coil; the frame is provided with a receiving cavity; the diaphragm is disposed on one side of the frame and covers the receiving cavity; the magnetic circuit assembly is disposed within the receiving cavity and has a magnetic gap; the first voice coil and the second voice coil are connected to the diaphragm, at least a portion of the first voice coil and at least a portion of the second voice coil are disposed within the magnetic gap, and the first voice coil or the second voice coil drives the diaphragm to move when it is in a working state.

[0006] The sound-generating module provided in this application embodiment has a multi-voice coil structure by setting a first voice coil and a second voice coil. This increases the heat transfer area of ​​the voice coils, allowing heat to be quickly conducted into the air, improving heat dissipation, reducing heat accumulation, and minimizing the need for the sound-generating module to operate continuously at high temperatures. Applying the sound-generating module to electronic devices can reduce the risk of heat accumulating inside the electronic devices and damaging internal electronic components. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a cross-sectional view of the sound-emitting module according to an embodiment of this application;

[0009] Figure 2 This is another cross-sectional view of the sound-emitting module according to an embodiment of this application;

[0010] Figure 3This is an exploded structural diagram of the sound-generating module according to an embodiment of this application;

[0011] Figure 4 This is an exploded structural diagram of the magnetic circuit assembly of the sound-generating module according to an embodiment of this application;

[0012] Figure 5 This is a bottom view of the magnetic circuit assembly of the sound-generating module according to an embodiment of this application;

[0013] Figure 6 This is a top view of the connection component of the sound-generating module according to an embodiment of this application.

[0014] Explanation of reference numerals in the attached figures:

[0015] 100. Sound-generating module;

[0016] 10. Sink stand; 11. Receiving cavity; 12. First sink stand; 13. Second sink stand;

[0017] 20. Diaphragm;

[0018] 30. Magnetic circuit assembly; 30a. Magnetic gap; 31. First magnet; 32. Second magnet; 33. First pole piece; 331. First part; 332. Second part; 34. Second pole piece; 35. Third pole piece; 36. Third magnet; 37. Fourth magnet; 38. First magnetic cover; 39. Second magnetic cover;

[0019] 40. First voice coil;

[0020] 50. Second voice coil;

[0021] 60. First circuit board;

[0022] 70. Second circuit board;

[0023] 80. Bracket. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0025] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] To address the existing technical problems, embodiments of this application provide a sound-generating module and an electronic device. For a better understanding of this application, the following description is provided in conjunction with... Figures 1 to 6 The sound-emitting module 100 and electronic device according to embodiments of this application will be described in detail.

[0028] The sound-generating module provided in the embodiments of this application will be introduced first below.

[0029] Please see Figures 1 to 3 , Figure 1 This is an angled cross-sectional view of the sound-emitting module according to an embodiment of this application; Figure 2 This is another cross-sectional view of the sound-emitting module according to an embodiment of this application; Figure 3 This is an exploded structural diagram of the sound-generating module according to an embodiment of this application.

[0030] like Figures 1 to 3 As shown, the sound-generating module 100 provided in this application includes a frame 10, a diaphragm 20, a magnetic circuit assembly 30, a first voice coil 40, and a second voice coil 50. The frame 10 is provided with a receiving cavity 11. The diaphragm 20 is disposed on one side of the frame 10 and covers the receiving cavity 11. The magnetic circuit assembly 30 is disposed within the receiving cavity 11 and has a magnetic gap 30a. The first voice coil 40 and the second voice coil 50 are connected to the diaphragm 20, and at least a portion of the first voice coil 40 and at least a portion of the second voice coil 50 are disposed within the magnetic gap 30a. When the first voice coil 40 or the second voice coil 50 is in a working state, it drives the diaphragm 20 to move.

[0031] The frame 10 is the basic component of the sound-generating module 100. The frame 10 provides a mounting base for other components of the sound-generating module 100, such as the diaphragm 20 and the magnetic circuit assembly 30. The frame 10 has a receiving cavity 11. Specifically, a first opening communicating with the receiving cavity 11 is formed on one side of the frame 10, and a second opening communicating with the receiving cavity 11 is formed on the other side of the frame 10. The first opening and the second opening are arranged opposite to each other.

[0032] It should be noted that the shape, size and material of the aforementioned basin stand 10 can be set according to actual needs. For example, the aforementioned basin stand 10 can be round, rectangular or triangular, etc., and is not limited here.

[0033] In this embodiment, the basin stand 10 can be an integral structure, for example, it can be integrally formed by compression molding, bending, cold pressing, etc. The basin stand 10 can also be a split structure, for example, it includes a first basin stand, a second basin stand, a third basin stand, etc., and the first basin stand, the second basin stand, the third basin stand, etc. are spliced ​​together to form the basin stand 10.

[0034] The diaphragm 20 is the sound-producing part of the sound-producing module 100. The diaphragm 20 is disposed on one side of the frame 10 and covers the receiving cavity 11, so that the frame 10 has at least one sound outlet. Specifically, the diaphragm 20 seals the first opening. The first voice coil 40 and / or the second voice coil 50 can be fixed to the diaphragm 20 by adhesive bonding, so that the diaphragm 20 can vibrate with the first voice coil 40 and / or the second voice coil 50, thereby causing the sound-producing module 100 to emit sound.

[0035] In the embodiments of this application, the first voice coil 40 and the second voice coil 50 are connected to the diaphragm 20. This can be understood as both the first voice coil 40 and the second voice coil 50 being connected to the diaphragm 20; or, the first voice coil 40 is connected to the second voice coil 50, and the second voice coil 50 is connected to the diaphragm 20, that is, the first voice coil 40 is indirectly connected to the diaphragm 20; or, the second voice coil 50 is connected to the first voice coil 40, and the first voice coil 40 is connected to the diaphragm 20, that is, the second voice coil 50 is indirectly connected to the diaphragm 20.

[0036] The magnetic circuit assembly 30 is disposed within the receiving cavity, and the magnetic circuit assembly 30 has a magnetic gap 30a, which has magnetic lines of force, that is, a magnetic field.

[0037] In the embodiments of this application, when the first voice coil 40 or the second voice coil 50 is energized, the current-carrying wire is subjected to the Ampere force in the magnetic field, so at least a portion of the first voice coil 40 or at least a portion of the second voice coil 50 located in the magnetic gap 30a is subjected to the Ampere force and thus generates displacement. Furthermore, by adjusting the magnitude and direction of the current on the first voice coil 40 or the second voice coil 50, the displacement amplitude and displacement direction of the first voice coil 40 or the second voice coil 50 can be controlled, thereby driving the diaphragm 20 to emit sound waves through vibration.

[0038] The sound-generating module 100 provided in this embodiment of the application has a multi-voice coil structure by setting a first voice coil 40 and a second voice coil 50. This increases the heat transfer area of ​​the voice coils, allowing heat to be quickly conducted into the air, improving heat dissipation, reducing heat accumulation, and minimizing the need for the sound-generating module 100 to operate continuously at high temperatures. Applying the sound-generating module 100 to electronic devices can reduce the risk of heat accumulating inside the electronic devices and damaging internal electronic components.

[0039] In some optional embodiments, when one of the first voice coil 40 and the second voice coil 50 is in operation and the temperature reaches a preset threshold, the system switches to the other of the first voice coil 40 and the second voice coil 50 being in operation.

[0040] In this embodiment, when one of the first voice coil 40 and the second voice coil 50 is in operation and its temperature reaches a preset threshold, the system switches to the other of the first voice coil 40 and the second voice coil 50 being in operation. Specifically, when the first voice coil 40 is in operation (i.e., energized and causing the diaphragm 20 to vibrate and produce sound), the second voice coil 50 stops working. When the temperature of the first voice coil 40 reaches the threshold, it is de-energized and stops working. At this time, the second voice coil 50 is in operation (i.e., energized and causing the diaphragm 20 to vibrate and produce sound). When the temperature of the second voice coil 50 reaches the threshold, it is de-energized and stops working. At this time, the first voice coil 40 is in operation. This cycle repeats continuously, thereby achieving alternating operation of the first voice coil 40 and the second voice coil 50 and reducing the continuous operation of either the first voice coil 40 or the second voice coil 50 at high temperatures.

[0041] In these optional embodiments, by setting one of the first voice coil 40 and the second voice coil 50 to be in working state, when the first voice coil 40 is in working state and the temperature reaches a preset threshold, the second voice coil 50 is switched to working state, and the first voice coil 40 stops working. When the second voice coil 50 is in working state and the temperature reaches the preset threshold, the first voice coil 40 is switched to working state, and the second voice coil 50 stops working. This achieves alternating operation of the first voice coil 40 and the second voice coil 50, reducing the heat generated by the first voice coil 40 or the second voice coil 50 continuously operating at high temperatures, and further reducing heat accumulation.

[0042] In some alternative embodiments, such as Figure 1 and Figure 2 It also includes a first circuit board 60 and a second circuit board 70. The first circuit board 60 is connected to the first voice coil 40. The second circuit board 70 is connected to the second voice coil 50. When the first voice coil 40 is in operation and its temperature reaches a first threshold, the first voice coil 40 is de-energized, and the second voice coil 50 is energized. When the second voice coil 50 is in operation and its temperature reaches a second temperature threshold, the second voice coil 50 is de-energized, and the first voice coil 40 is energized.

[0043] In this embodiment of the application, the sound-generating module 100 includes a first circuit board 60 and a second circuit board 70. One end of the first circuit board 60 is connected to the first voice coil 40, and the other end of the first circuit board 60 is connected to an external circuit. One end of the second circuit board 70 is connected to the second voice coil 50, and the other end of the second circuit board 70 is connected to an external circuit, thereby energizing the first voice coil 40 through the first circuit board 60 and energizing the second voice coil 50 through the second circuit board 70.

[0044] Optionally, the first circuit board 60 and the first voice coil 40 are bonded together with thermally conductive adhesive.

[0045] Optionally, the second circuit board 70 and the second voice coil 50 are bonded together with thermally conductive adhesive.

[0046] For example, the first voice coil 40 is bonded to the first circuit board 60 by thermally conductive adhesive. The first voice coil 40 includes a first lead and a second lead. The first circuit board 60 includes a first pad, a second pad, a third pad, and a fourth pad. The second lead of the first voice coil 40 is spot-welded to the first pad of the first circuit board 60 to conduct electricity. The first lead is spot-welded to the second pad to conduct electricity. The first pad and the third pad are connected to each other. The second pad and the fourth pad are connected to each other. The third pad and the fourth pad serve as external pads for the core and are connected to the external circuit.

[0047] For example, the second voice coil 50 is bonded to the second circuit board 70 by thermally conductive adhesive. The second voice coil 50 includes a third lead and a fourth lead. The second circuit board 70 includes a fifth pad, a sixth pad, a seventh pad, and an eighth pad. The third lead of the second voice coil 50 is spot-welded to the fifth pad of the second circuit board 70 to conduct electricity. The fourth lead is spot-welded to the sixth pad to conduct electricity. The fifth pad and the seventh pad are connected to each other. The sixth pad and the eighth pad are connected to each other. The sixth pad and the eighth pad serve as external pads for the core and are connected to the external circuit.

[0048] Optionally, the first circuit board 60 is a flexible circuit board.

[0049] Optionally, the second circuit board 70 is a flexible circuit board.

[0050] In this embodiment, based on the set temperature rise coefficient 'a', the DC resistance Re of the voice coil, and the detected current voice coil resistance Rg, the temperature threshold 't' is calculated using the formula Rg = Re + a × (t - 25), which determines the first threshold of the first voice coil 40 and the second threshold of the second voice coil 50. Specifically, when the intelligent power amplifier detects that the temperature of the first voice coil 40 exceeds the first threshold, the intelligent power amplifier driver pauses the operation of the first voice coil 40, thereby driving the second voice coil 50 to operate. When the second voice coil 50 is operating, if the intelligent power amplifier also detects that the temperature of the second voice coil 50 exceeds the second threshold, the intelligent power amplifier driver pauses the operation of the second voice coil 50 and continues to drive the first voice coil 40 to operate.

[0051] In these optional embodiments, by setting a first circuit board 60 and a second circuit board 70, with the first circuit board 60 connected to the first voice coil 40 and the second circuit board 70 connected to the second voice coil 50, the first voice coil 40 and the second voice coil 50 can be independently controlled. When the sound-generating module 100 is in working state, one of the first voice coil 40 and the second voice coil 50 can be energized, which can improve the sensitivity of the first voice coil 40 and the second voice coil 50 being energized.

[0052] In some optional embodiments, the first voice coil 40 and the second voice coil 50 are arranged along the movement direction of the diaphragm 20, the first voice coil 40 is connected to the diaphragm 20, and the second voice coil 50 is connected to the diaphragm 20 through the first voice coil 40.

[0053] In this embodiment, the first voice coil 40 and the second voice coil 50 are at least partially disposed in the magnetic gap 30a. The first voice coil 40 is connected to the diaphragm 20, a portion of the first voice coil 40 is connected to the diaphragm 20, and another portion of the first voice coil 40 extends into the magnetic gap 30a. The second voice coil 50 is connected to the first voice coil 40, and both the first and second voice coils are arranged along the direction of movement of the diaphragm 20. Specifically, the second voice coil 50 is connected to the first voice coil 40. The second voice coil 50 can be directly connected to the first voice coil 40, or it can be connected to the first voice coil 40 via a connector or the like. More specifically, when the first voice coil 40 is in the working state, it drives the second voice coil 50 and the diaphragm 20 to vibrate and produce sound; when the second voice coil 50 is in the working state, it drives the first voice coil 40 and the diaphragm 20 to vibrate and produce sound.

[0054] In this embodiment, the second voice coil 50 may be partially located within the magnetic gap 30a, or the second voice coil 50 may be entirely located within the magnetic gap 30a.

[0055] In these alternative embodiments, the first voice coil 40 and the second voice coil 50 are arranged along the direction of movement of the diaphragm 20, which can increase the contact area between the voice coil and the air in the magnetic gap 30a, thereby quickly conducting heat to the air and achieving a better heat dissipation effect.

[0056] In some alternative embodiments, such as Figure 1 and Figure 2 The sound-generating module 100 also includes a bracket 80, which is disposed in the accommodating cavity 11. The first voice coil 40 and the second voice coil 50 are disposed on opposite sides of the bracket 80, and the first voice coil 40, the first circuit board 60, the second voice coil 50 and the second circuit board 70 are connected to the bracket 80. The bracket 80 is hollow, and a part of the magnetic circuit assembly 30 is disposed in the bracket 80.

[0057] In this embodiment, the first voice coil 40, the first circuit board 60, the second voice coil 50, and the second circuit board 70 are connected to the bracket 80. There are various connection methods, such as bonding, welding, plugging, snapping, or connecting through connectors.

[0058] Optionally, the first voice coil 40, the first circuit board 60, the second voice coil 50, and the second circuit board 70 are bonded to the bracket 80 with thermally conductive adhesive.

[0059] In these optional embodiments, the bracket 80 is hollow, a portion of the magnetic circuit assembly 30 is disposed within the bracket 80, and the first voice coil 40 and the second voice coil 50 are disposed on opposite sides of the bracket 80, such that at least a portion of the first voice coil 40 and at least a portion of the second voice coil 50 are disposed within the magnetic gap 30a. When the first voice coil 40 or the second voice coil 50 is in the working state, it is ensured that the first voice coil 40 or the second voice coil 50 cuts more magnetic field lines, thereby ensuring the sound production effect of the sound-producing module 100. In addition, the first voice coil 40, the first circuit board 60, the second voice coil 50 and the second circuit board 70 are connected to the bracket 80 to form a whole, thereby improving the vibration consistency of the first voice coil 40 and the second voice coil 50 within the magnetic gap 30a.

[0060] See also Figure 4 , Figure 4 This is an exploded structural diagram of the magnetic circuit assembly of the sound-generating module according to an embodiment of this application.

[0061] In some alternative embodiments, such as Figure 1 and Figure 4 As shown, the magnetic circuit assembly 30 includes a first magnet 31 and a second magnet 32. The first magnet 31 is disposed within the accommodating cavity 11. The second magnet 32 ​​is arranged around the first magnet 31 at intervals to form magnetic gaps 30a, and the second magnet 32 ​​is connected to the basin frame 10.

[0062] In this embodiment, the second magnet 32 ​​is spaced around the first magnet 31 to form a magnetic gap 30a, and a strong magnetic gap 30a is formed between the first magnet 31 and the second magnet 32. The second magnet 32 ​​is arranged around the first magnet 31, wherein the second magnet 32 ​​may have a ring structure, or the second magnet 32 ​​may include a plurality of sub-magnets, which are circumferentially spaced around the first magnet 31.

[0063] For example, the second magnet 32 ​​includes four sub-magnets, which are spaced apart around the first magnet 31. This arrangement ensures that the magnetic gap 30a between the first magnet 31 and the second magnet 32 ​​has a high magnetic flux, while allowing the gap between adjacent sub-magnets to extend from the first circuit board 60 and the second circuit board 70 and connect to external circuitry.

[0064] In this embodiment, the magnetic circuit assembly 30 may also include other magnetic steel components, and the arrangement of multiple magnetic steel components can accelerate the diffusion of heat.

[0065] In these alternative embodiments, the first voice coil 40 or the second voice coil 50 can share the same magnetic circuit assembly 30, reducing the number of magnetic circuit assemblies 30 and thus lowering the cost of the sound-generating module 100. Simultaneously, the second magnet 32 ​​is spaced around the first magnet 31, resulting in a smaller space occupied by the magnetic circuit assembly 30 and a smaller sound-generating module 100, meeting current user demands for thinner and lighter electronic devices. Furthermore, the arrangement of the first magnet 31 and the second magnet 32 ​​increases heat conduction, facilitating the dissipation of internal heat from the sound-generating module 100 and improving heat dissipation.

[0066] In some alternative embodiments, such as Figure 1 and Figure 4 As shown, the magnetic circuit assembly 30 further includes a first pole piece 33, a second pole piece 34, and a third pole piece 35. A first portion 331 of the first pole piece 33 is disposed on the side of the first magnet 31 facing the diaphragm 20. A second portion 332 of the first pole piece 33 extends along the direction of the frame 10 and connects to the frame 10, and is disposed on the side of the second magnet 32 ​​facing away from the diaphragm 20. The first pole piece 33 is located in a through groove, which communicates with the magnetic gap 30a. The second pole piece 34 is spaced around the first portion 331, and is disposed on the side of the second magnet 32 ​​facing the diaphragm 20. The second pole piece 34 is connected to the frame 10. The third pole piece 35 is disposed on the side of the first magnet 31 facing away from the first portion 331, and the second portion 332 is spaced around the third pole piece 35.

[0067] In this embodiment, the first portion 331 of the first pole piece 33 and the third pole piece 35 are respectively disposed on opposite sides of the first magnet 31 to constrain the magnetic field lines of the first magnet 31, thereby ensuring that the magnetic gap 30a between the first magnet 31 and the second magnet 32 ​​has a high magnetic field strength. The second pole piece 34 and the second portion 332 of the first pole piece 33 are respectively disposed on opposite sides of the second magnet 32 ​​to constrain the magnetic field lines of the second magnet 32, thereby ensuring that the magnetic gap 30a between the first magnet 31 and the second magnet 32 ​​has a high magnetic field strength. The second pole piece 34 is spaced around the first portion 331 of the first pole piece 33, therefore, the gap between the second pole piece 34 and the first portion 331 of the first pole piece 33 communicates with the magnetic gap 30a, forming a clearance space, allowing the first voice coil 40 and the second voice coil 50 to connect. The second part 332 of the first pole piece 33 is arranged around the third pole piece 35 at intervals. Therefore, the gap between the second pole piece 34 and the first part 331 of the first pole piece 33 is connected to the magnetic gap 30a, so that the air in the magnetic gap 30a can be connected to the outside gas, thus accelerating the diffusion of heat.

[0068] Optionally, the projected area of ​​the first magnet 31 on the first part 331 of the first pole piece 33 is smaller than the area of ​​the first part 331; the projected area of ​​the first magnet 31 on the third pole piece 35 is smaller than the area of ​​the third pole piece 35.

[0069] Optionally, the projected area of ​​the second magnet 32 ​​on the second part 332 of the first pole piece 33 is smaller than the area of ​​the second part 332; the projected area of ​​the second magnet 32 ​​on the second pole piece 34 is smaller than the area of ​​the third pole piece 35.

[0070] In this embodiment, the first pole piece 33 includes a first part 331 and a second part 332. The first part 331 is disposed on the side of the first magnet 31 facing the diaphragm 20, and the second part 332 extends along the direction of the frame 10 and is connected to the frame 10. The first part 331 protrudes towards the diaphragm relative to the second part 332, and the first pole piece 33 is provided with a through groove. The through groove is provided so that the first voice coil 40 is connected to the second voice coil 50, and it is beneficial for the air in the magnetic gap 30a to diffuse to the outside through the through groove.

[0071] In these alternative embodiments, the magnetic circuit assembly 30 further includes a first pole piece 33, a second pole piece 34, and a third pole piece 35, which can constrain the magnetic field lines of the first magnet 31 and the second magnet 32 ​​so that the magnetic gap 30a between the first magnet 31 and the second magnet 32 ​​has a high magnetic field strength.

[0072] See also Figure 5 and Figure 6 , Figure 5 This is a bottom view of the magnetic circuit assembly of the sound-generating module according to an embodiment of this application; Figure 6 This is a top view of the connection component of the sound-generating module according to an embodiment of this application.

[0073] In some alternative embodiments, such as Figures 4 to 6 As shown, the washbasin frame 10 includes a first washbasin frame 12 and a second washbasin frame 13. The first washbasin frame 12 and the second washbasin frame 13 are spaced apart along the movement direction of the diaphragm 20, and the first washbasin frame 12 and the second washbasin frame 13 form a receiving cavity 11. The diaphragm 20 is disposed on the side of the first washbasin frame 12 opposite to the second washbasin frame 13. A second magnet 32 ​​is disposed between the first washbasin frame 12 and the second washbasin frame 13. A first pole piece 33 is connected to the first washbasin frame 12, and a second pole piece 34 is connected to the second washbasin frame 13.

[0074] In this embodiment, the basin frame 10 includes a first basin frame 12 and a second basin frame 13, which are spaced apart along the movement direction of the diaphragm 20. A second magnet 32 ​​is disposed between the first basin frame 12 and the second basin frame 13. The basin frame 10 adopts a split first basin frame 12 and second basin frame 13 design, with a first pole piece 33 connected to the first basin frame 12 and a second pole piece 34 connected to the second basin frame 13. This facilitates assembly to form the sound-generating module 100 and simplifies the overall assembly process of the sound-generating module 100. Furthermore, the second magnet 32, disposed between the first basin frame 12 and the second basin frame 13, can directly transfer heat to the outside air or other components, thereby further improving the heat dissipation effect.

[0075] Optionally, the first electrode 33 is mounted on the first basin frame 12.

[0076] Optionally, the second pole piece 34 is mounted on the second basin frame 13.

[0077] In some alternative embodiments, such as Figure 1 and Figure 4 As shown, it also includes a third magnet 36 and a fourth magnet 37. The third magnet 36 is disposed within the accommodating cavity 11 and is located on the side of the third pole piece 35 facing away from the first magnet 31. The fourth magnet 37 is arranged at intervals around the third magnet 36 and is connected to the second part 332.

[0078] In this embodiment, the sound-generating module 100 includes a first magnet 31, a second magnet 32, a third magnet 36, and a fourth magnet 37. The second magnet 32 ​​is arranged around the first magnet 31 at intervals to form a first gap, and the fourth magnet 37 is arranged around the third magnet 36 at intervals to form a second gap. The first gap and the second gap form a magnetic gap 30a.

[0079] In this embodiment, the first magnet 31 and the third magnet 36 are arranged along the movement direction of the diaphragm 20, and the magnetic pole of the first magnet 31 facing the third magnet 36 is the same as the magnetic pole of the third magnet 36 facing the first magnet 31. Specifically, the polarity of the first magnet 31 facing the third magnet 36 is the S pole, and the magnetic pole of the third magnet 36 facing the first magnet 31 is the S pole.

[0080] In this embodiment, the second magnet 32 ​​and the fourth magnet 37 are arranged along the movement direction of the diaphragm 20, and the magnetic pole of the second magnet 32 ​​facing the fourth magnet 37 is the same as the magnetic pole of the fourth magnet 37 facing the second magnet 32. Specifically, the polarity of the second magnet 32 ​​facing the fourth magnet 37 is N, and the magnetic pole of the fourth magnet 37 facing the second magnet 32 ​​is N.

[0081] In these alternative embodiments, this configuration can further enhance the magnetic field strength of the magnetic gap 30a, thereby increasing the vibration amplitude of the first voice coil 40 and the second voice coil 50.

[0082] In some optional embodiments, a first magnetic cover 38 and a second magnetic cover 39 are also included. The first magnetic cover 38 is disposed within the receiving cavity 11 and is located on the side of the third magnet 36 opposite to the third pole piece 35. The second magnetic cover 39 is disposed around the first magnetic cover 38 at intervals and is connected to the fourth magnet 37.

[0083] Optionally, the first electrode 33, the second electrode 34, and the third electrode 35 are made of the same material as the first magnetic cover 38 and the second magnetic cover 39.

[0084] In these optional embodiments, the first magnetic shield 38 and the second magnetic shield 39 can constrain the magnetic field lines of the third magnet 36 and the fourth magnet 37, so that the magnetic gap 30a has a high magnetic field strength. Moreover, the first magnetic shield 38 and the second magnetic shield 39 are spaced apart, and the air in the magnetic gap 30a can diffuse to the outside through the gap between the first magnetic shield 38 and the second magnetic shield 39, which is beneficial to the air diffusion in the magnetic gap 30a.

[0085] In some alternative embodiments, a dome is also included, which is disposed on one side of the frame 10, and the first voice coil 40 is connected to the diaphragm 20 through the dome.

[0086] The electronic device provided in this application includes the hinge module 100 provided in the above embodiments.

[0087] In this application embodiment, the electronic device may be a mobile phone, tablet computer, laptop computer, handheld computer, vehicle-mounted sound module, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc.

[0088] Other configurations and operations of the sound-generating module according to the embodiments of this application are known to those skilled in the art and will not be described in detail here. In this specification, the terms "one embodiment," "some embodiments," "exemplarily," "in the embodiments of this application," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sound-generating module, characterized in that, include: The basin stand is equipped with a receiving cavity; A diaphragm, wherein the diaphragm is disposed on one side of the frame and covers the receiving cavity; A magnetic circuit assembly, wherein the magnetic circuit assembly is disposed within the accommodating cavity, and the magnetic circuit assembly has a magnetic gap; A first voice coil and a second voice coil are connected to the diaphragm. At least a portion of the first voice coil and at least a portion of the second voice coil are disposed within the magnetic gap. When either the first voice coil or the second voice coil is in operation, it drives the diaphragm to move. The sound-generating module further includes a first circuit board and a second circuit board. The first circuit board is connected to the first voice coil, and the second circuit board is connected to the second voice coil. When the first voice coil is in the working state and the temperature reaches a first threshold, the first voice coil stops being powered on, and the second voice coil is powered on. When the second voice coil is in the working state and the temperature reaches the second temperature threshold, the second voice coil stops being energized, and the first voice coil is energized. The magnetic circuit assembly includes a first magnet, a second magnet, a third magnet, and a fourth magnet. The second magnet is arranged around the first magnet at intervals to form a first gap, and the fourth magnet is arranged around the third magnet at intervals to form a second gap. The first gap and the second gap form the magnetic gap. The first magnet and the third magnet are arranged along the direction of movement of the diaphragm, and the second magnet and the fourth magnet are also arranged along the direction of movement of the diaphragm.

2. The sound-generating module according to claim 1, characterized in that, The first voice coil and the second voice coil are arranged along the direction of movement of the diaphragm. The first voice coil is connected to the diaphragm, and the second voice coil is connected to the diaphragm through the first voice coil.

3. The sound-generating module according to claim 2, characterized in that, Also includes: A bracket is disposed within the accommodating cavity. The first voice coil and the second voice coil are disposed on opposite sides of the bracket, and the first voice coil, the first circuit board, the second voice coil, and the second circuit board are connected to the bracket. The bracket is hollow, and a portion of the magnetic circuit assembly is disposed within the bracket.

4. The sound-generating module according to claim 3, characterized in that, The first magnet is disposed within the accommodating cavity; the second magnet is connected to the basin frame.

5. The sound-generating module according to claim 4, characterized in that, The magnetic circuit assembly also includes: The first pole piece has a first portion disposed on the side of the first magnet facing the diaphragm, and a second portion of the first pole piece extends toward the frame and is connected to the frame, and the second portion is disposed on the side of the second magnet facing away from the diaphragm. The first pole piece has a through groove that communicates with the magnetic gap. The second pole piece is arranged at intervals around the first portion, and the second pole piece is disposed on the side of the second magnet facing the diaphragm. The second pole piece is connected to the frame. The third pole piece is disposed on the side of the first magnet that is away from the first part, and the second part is disposed around the third pole piece at intervals.

6. The sound-generating module according to claim 5, characterized in that, The basin frame includes a first basin frame and a second basin frame, the first basin frame and the second basin frame are spaced apart along the movement direction of the diaphragm, and the first basin frame and the second basin frame form the receiving cavity, and the diaphragm is disposed on the side of the first basin frame away from the second basin frame; The second magnet is disposed between the first basin stand and the second basin stand; The first electrode is connected to the first basin frame, and the second electrode is connected to the second basin frame.

7. The sound-generating module according to claim 6, characterized in that, The third magnet is disposed within the accommodating cavity, and is located on the side of the third pole piece opposite to the first magnet; the fourth magnet is connected to the second part.

8. The sound-generating module according to claim 7, characterized in that, The magnetic circuit assembly also includes: A first magnetic cover is disposed within the accommodating cavity and is located on the side of the third magnet that is away from the third pole piece. The second magnetic shield is arranged at intervals around the first magnetic shield, and the second magnetic shield is connected to the fourth magnetic steel component.

9. An electronic device, characterized in that, Includes the sound-generating module as described in any one of claims 1 to 8.

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