Electronic device, sound generation unit and speaker module

Abstract

The present application relates to the technical field of terminals, and in particular to an electronic device, a sound generation unit and a speaker module. The electronic device comprises a cover plate and a speaker module. The speaker module comprises a housing member and a sound generation unit, wherein a first magnetic circuit assembly of the sound generation unit is fixed to a frame, a diaphragm is arranged around the first magnetic circuit assembly, an inner peripheral edge of the diaphragm is fixedly connected to the first magnetic circuit assembly, an outer peripheral edge of the diaphragm is fixedly connected to the frame, and a first voice coil is located in a first magnetic gap of the first magnetic circuit assembly; and the housing member and the first magnetic circuit assembly are fixedly connected to the same surface of the cover plate, and the cover plate, the housing member, the diaphragm and the first magnetic circuit assembly enclose a front cavity of the speaker module. The area of a vibrating portion of the diaphragm is relatively small, such that the volume of the front cavity is relatively small, which is conducive to increasing the high-frequency cut-off frequency of the speaker module; and the volume of a rear cavity required by the speaker module is relatively small, which is conducive to reducing the overall volume of the speaker module. In this way, the speaker module occupies a thinner space in the electronic device, which is conducive to a slim design of the electronic device.

Description

Electronic devices, sound units and speaker modules

[0001] This application claims priority to Chinese Patent Application No. 202510113529.2, filed on January 23, 2025, entitled "Electronic Device, Sound Generating Unit and Speaker Module", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of terminal technology, and in particular to an electronic device, a sound generating unit, and a speaker module. Background Technology

[0003] With the increasing demand for thinner and lighter terminal devices, these devices are becoming increasingly thinner, posing a significant challenge to the thickness of loudspeakers. In traditional loudspeakers, as the thickness decreases, the diaphragm's displacement also decreases, leading to a reduction in speaker performance. Current technologies can increase the vibrating area of ​​the loudspeaker diaphragm to improve performance, but this requires a larger rear cavity. Therefore, there is a need for a thin, lightweight loudspeaker with high sound quality. Summary of the Invention

[0004] The purpose of this application is to provide an electronic device, a sound generating unit, and a speaker module.

[0005] In a first aspect, embodiments of this application provide an electronic device, which includes a cover plate and a speaker module. The speaker module includes a housing and a sound-emitting unit. The sound-emitting unit includes a frame, a diaphragm, a first magnetic circuit assembly, and a first voice coil. The first magnetic circuit assembly is fixed to the frame, the diaphragm is disposed around the first magnetic circuit assembly, the inner periphery of the diaphragm is fixedly connected to the first magnetic circuit assembly, and the outer periphery of the diaphragm is fixedly connected to the frame. The first voice coil is located in the first magnetic gap of the first magnetic circuit assembly and is fixedly connected to the vibrating part of the diaphragm. The frame is fixed to the housing, and the housing and the first magnetic circuit assembly are fixedly connected to the same surface of the cover plate. The cover plate, the housing, the diaphragm, and the first magnetic circuit assembly form the front cavity of the speaker module.

[0006] For example, the inner periphery of the diaphragm may be a second folded ring portion and / or a third folded ring portion, and the outer periphery of the diaphragm may be a mounting portion. The vibrating portion of the diaphragm may be the part of the diaphragm that vibrates under force.

[0007] For example, the front cavity can be connected to the external space of the electronic device to enable sound generation.

[0008] For example, the housing may have a first cavity, which together with the internal space of the sound-emitting unit constitutes the rear cavity of the speaker module. It is understood that the rear cavity and the front cavity may be isolated by a diaphragm.

[0009] For example, the height of the speaker module can be less than 3 millimeters. The height space occupied by the speaker module in the electronic device can be less than 3 millimeters.

[0010] In this embodiment, since the diaphragm is arranged around the first magnetic circuit assembly, the diaphragm effectively reuses the height space occupied by the first magnetic circuit assembly, and there is no need to provide additional space for the vibration of the diaphragm. Therefore, the sound-generating unit can be made thinner. Furthermore, the first magnetic circuit assembly directly contacts the cover plate of the electronic device to form the front cavity, and there is no need to set up additional space to form the front cavity. Therefore, the speaker module occupies a thinner space in the electronic device, which is beneficial to the thin design of the electronic device.

[0011] Furthermore, since the first magnetic circuit assembly is also used to form the front cavity, the diaphragm needs to avoid the first magnetic circuit assembly. As a result, the area of ​​the vibrating part of the diaphragm is smaller, and thus the volume of the front cavity is smaller. This is beneficial to improve the high-frequency cutoff frequency of the speaker module, thereby improving the sound quality of the electronic device.

[0012] Furthermore, due to the smaller diaphragm area, the required rear cavity volume of the speaker module is smaller, which helps to reduce the overall size of the speaker module.

[0013] In some implementations, the cover plate can be any one of the back cover, the middle frame, and the display screen.

[0014] In this embodiment, the position of the speaker module in the electronic device is flexibly set according to the space available in the electronic device.

[0015] In some embodiments, the sound-generating unit further includes a first top plate, which is fixedly connected to the first magnetic circuit assembly and the cover plate.

[0016] In this embodiment, the diaphragm is fixedly connected to the first magnetic circuit assembly via the first top plate, which is beneficial for setting a diaphragm of appropriate size and shape; and, the connection between the first magnetic circuit assembly and the cover plate via the first top plate is beneficial for flexibly setting the thickness, shape and material of the first top plate so that it can be better fixedly connected to the cover plate.

[0017] In some implementations, the first top plate is made of a magnetically conductive material.

[0018] In this embodiment, since the first top plate and the first magnetic circuit assembly are connected, the first top plate can be used as part of the first magnetic circuit assembly and form a magnetic circuit.

[0019] The first and second top plates not only serve to fix and connect the diaphragm, but also to seal the connection between the diaphragm and the frame. The first top plate also forms a magnetic circuit, which helps to increase the magnetic field strength of the first magnetic gap, thereby increasing the driving force when the first magnetic circuit assembly interacts with the first voice coil. Furthermore, there is no need to place a magnetic conductor on the top side of the first magnetic circuit assembly, which is beneficial for the thinner design of the sound unit.

[0020] In some embodiments, the first top plate has a first surface that is opposite to the first magnetic circuit assembly, and the top surface of the housing is a third surface, with the first surface and the third surface being flush.

[0021] In this embodiment, the first surface of the sound-emitting unit extends to the highest point of the speaker module in the height space of the speaker module, thereby making full use of the height space of the speaker module, reducing the influence of the thickness of the sound-emitting unit on the thickness of the speaker module, and facilitating the thin design of the speaker module.

[0022] In some embodiments, the vibrating portion of the diaphragm is recessed relative to the first surface.

[0023] For example, the height of the vibrating part is lower than the height of the first top plate.

[0024] In this embodiment, the height space required for the vibration of the vibrating part coincides with the height space of the first magnetic circuit assembly. This is equivalent to reusing the height space required for setting the first magnetic circuit assembly, eliminating the need to provide additional vibration space in the height direction for the diaphragm's vibration, which is beneficial for the thin design of the sound-generating unit. Therefore, by reducing the height of the diaphragm, making it lower than the height of the first top plate, it is beneficial for the thin design of the speaker module.

[0025] In some embodiments, the speaker module further includes a first ring member made of metal; the first ring member is located between the inner edge of the diaphragm and the first magnetic circuit assembly, and is fixedly connected to the inner edge of the diaphragm and the first magnetic circuit assembly.

[0026] In this embodiment, the first ring has a large rigidity. After it is fixedly connected to the diaphragm, it can make the fixation of the diaphragm to the first top plate more reliable, and it can also support the diaphragm, thereby improving the fixation effect of the diaphragm and facilitating the deformation of the diaphragm.

[0027] In some embodiments, the first magnetic circuit assembly includes a first magnet layer, a first washer layer, and a second magnet layer, which are stacked sequentially along the vibration direction of the first voice coil.

[0028] In this embodiment, the first magnetic circuit assembly is equivalent to forming two sets of magnetic circuit structures, and is guided by the first center washer and the first side washer. Therefore, the first magnetic gap of the first magnetic circuit assembly has a strong magnetic field strength. Furthermore, the two sets of magnetic circuit structures are arranged in the direction of the central axis of the first voice coil. The magnetic field strength linearity of the first magnetic gap in the direction of the central axis of the first voice coil is good, which is beneficial to improving the sound quality of the sound unit.

[0029] In some embodiments, the first magnetic circuit assembly includes a first central magnetic element and a first side magnetic element, with a first magnetic gap formed between the first central magnetic element and the first side magnetic element; the first central magnetic element includes a first central magnet, a first central washer, and a second central magnet, the first central magnet, the first central washer, and the second central magnet are arranged along the vibration direction of the first voice coil, the first voice coil surrounds the first central washer and is disposed opposite to the first central washer, and the thickness of the first central washer is greater than or equal to the thickness of the first voice coil.

[0030] For example, the diaphragm vibrates in the same direction as the first voice coil.

[0031] In this embodiment, the thickness of the first and second center washers is increased, the linearity of the BL value of the first and second magnetic gaps is improved, thereby reducing the distortion of the sound unit and improving the sound quality of the sound unit.

[0032] In some embodiments, the middle portions of the first central magnet, the first central washer, and the second central magnet are respectively provided with through holes, and the area of ​​the through hole of the first central washer is larger than the area of ​​the through hole of the first central magnet and the area of ​​the through hole of the second central magnet.

[0033] In this embodiment, by opening a through hole in the first magnetic circuit assembly, material is removed from the first magnetic circuit assembly, and the area of ​​the through hole in the first central washer is large, thereby reducing the weight of the first magnetic circuit assembly without reducing the magnetic strength of the first magnetic circuit assembly.

[0034] In some embodiments, the first magnetic circuit assembly includes a first central magnetic element and a first side magnetic element, with a first magnetic gap formed between the first central magnetic element and the first side magnetic element;

[0035] The first side magnetic component includes a first side magnetic part and a second side magnetic part, and a first central magnetic component is located between the first side magnetic part and the second side magnetic part. In the arrangement direction of the first side magnetic part and the second side magnetic part, the distance between the ends of the first side magnetic part and the second side magnetic part is less than the width of the first central magnetic component.

[0036] In this embodiment, the gap between the first side magnetic part and the second side magnetic part is small, and both have a large volume, which makes full use of the space occupied by the first magnetic circuit assembly and is beneficial to improving the magnetic field strength of the first magnetic gap.

[0037] In some embodiments, the sound-generating unit further includes a second magnetic circuit assembly and a second voice coil; the second magnetic circuit assembly is fixed to the frame, the diaphragm is arranged around the second magnetic circuit assembly, the inner periphery of the diaphragm is fixedly connected to the second magnetic circuit assembly, the outer periphery of the diaphragm is fixedly connected to the frame, the second voice coil is located in the second magnetic gap of the second magnetic circuit assembly and is fixedly connected to the vibrating part of the diaphragm; the second magnetic circuit assembly is fixedly connected to the same surface of the cover plate as the first magnetic circuit assembly, and the second magnetic circuit assembly is used to form the front cavity of the speaker module.

[0038] In this embodiment, by setting a first magnetic circuit component and a second magnetic circuit component with an interval, that is, setting two sets of magnetic circuit components, compared with one set of magnetic circuit components, this embodiment is equivalent to having two more sets of magnetic circuit components inside the sound unit, that is, increasing the equivalent rear cavity of the sound unit, which is beneficial to improving the low frequency sound quality of the sound unit.

[0039] Furthermore, through the cooperation of the first magnetic circuit assembly and the first voice coil, and the cooperation of the second magnetic circuit assembly and the second voice coil, the two sets of driving mechanisms jointly drive the diaphragm to vibrate. This helps to reduce the deformation of the diaphragm during vibration, improve the stability of the diaphragm vibration, and thus improve the sound quality. In addition, the two sets of driving mechanisms also allow the diaphragm to be designed as a long strip shape with a large length-to-width ratio, making the sound unit more adaptable.

[0040] In some embodiments, the diaphragm includes a mounting portion, a first folded ring portion, a vibrating portion, a second folded ring portion, and a third folded ring portion. The first folded ring portion is fixedly connected to the mounting portion and the vibrating portion, while the second and third folded ring portions are fixedly fixed to the vibrating portion at intervals. The mounting portion is fixedly connected to the frame, the second folded ring portion is fixedly connected to the first magnetic circuit assembly, and the third folded ring portion is fixedly connected to the second magnetic circuit assembly. In this embodiment, by providing the first, second, and third folded ring portions, deformable structures are connected to both the inner and outer edges of the vibrating portion, which helps to make the vibrating portion vibrate smoothly. Furthermore, since the second and third folded ring portions are spaced apart, the vibrating portion has an approximate figure-eight shape, resulting in higher overall strength and greater stability during vibration.

[0041] In some implementations, the diaphragm is a one-piece molded structural component.

[0042] For example, the diaphragm can be integrally molded by compression molding or other methods.

[0043] In this embodiment, the diaphragm has better overall integrity, better reliability, and is easier to manufacture.

[0044] In some embodiments, the speaker module further includes a support member, which includes a support frame, a first support portion, a second support portion, a first bending portion, and a second bending portion. The first support portion and the second support portion are fixed to the support frame at intervals. The first bending portion and the second bending portion are respectively fixed to opposite sides of the support frame. The arrangement direction of the first bending portion and the second bending portion is perpendicular to the arrangement direction of the first support portion and the second support portion. The first bending portion and the second bending portion extend along the arrangement direction of the first support portion and the second support portion, and protrude from one side of the support frame. The support frame is fixed to the vibrating part of the diaphragm. The first support portion is fixedly connected to the first voice coil, and the second support portion is fixedly connected to the second voice coil.

[0045] In this embodiment, the support member is an integral structural component with strong support capacity. When the two ends of the first and second support members are subjected to force, the arrangement of the first and second support members can strengthen the support frame, improve the bending resistance of the support member, and thus reduce the deformation of the support member under force. The support member has better support performance, which is beneficial to improving the sound quality of the sound unit.

[0046] The first and second voice coils are connected to the vibrating part of the diaphragm through a support member, which allows for flexible setting of the position of the vibrating part; it also helps to ensure uniform vibration throughout the vibrating part, thereby improving the sound quality of the sound unit.

[0047] In some embodiments, the speaker module further includes a flexible circuit board, which includes an outer ring portion, a first deformable portion, a first fixed portion, a second deformable portion, and a second fixed portion. The first deformable portion is fixedly connected to the outer ring portion and the first fixed portion, and the second deformable portion is fixedly connected to the outer ring portion and the second fixed portion. The outer ring portion is fixed to the frame, the first fixed portion is fixedly connected to the first voice coil, and the second fixed portion is fixedly connected to the second voice coil.

[0048] In this embodiment, the flexible circuit board is used to transmit electrical signals to the first voice coil and the second voice coil. In addition, the flexible circuit board is also used to position the first voice coil and the second voice coil to prevent the axis of the first voice coil and the axis of the second voice coil from deflecting, so that the first voice coil and the second voice coil vibrate in a straight and stable manner.

[0049] In some embodiments, the speaker module further includes a first reinforcing member and a second reinforcing member; the first reinforcing member includes a first end, a connecting portion, and a second end, the connecting portion of the first reinforcing member connects the first end and the second end, the first end of the first reinforcing member is fixedly connected to an outer ring portion, and the second end of the first reinforcing member is fixedly connected to a first fixing portion; the second reinforcing member includes a first end, a connecting portion, and a second end, the connecting portion of the second reinforcing member connects the first end and the second end, the first end of the second reinforcing member is fixedly connected to an outer ring portion, and the second end of the second reinforcing member is fixedly connected to a second fixing portion.

[0050] In this embodiment, the connecting portion of the first reinforcing member can deform in the direction of the central axis of the first voice coil and reinforce the flexible circuit board in a direction perpendicular to the central axis of the first voice coil, thereby improving the positioning effect of the flexible circuit board on the first voice coil. The connecting portion of the second reinforcing member can deform in the direction of the central axis of the second voice coil and reinforce the flexible circuit board in a direction perpendicular to the central axis of the second voice coil, thereby improving the positioning effect of the flexible circuit board on the second voice coil.

[0051] In some embodiments, the basin stand includes a frame, a first plate, and a second plate;

[0052] Ventilation holes are provided on the side walls of the frame; the bottom wall of the frame has a first opening and a second opening, which are spaced apart; a first plate is fixed and sealed to the frame and covers the first opening; a second plate is fixed and sealed to the frame and covers the second opening.

[0053] In this embodiment, the basin stand has a simple structure and is easy to manufacture.

[0054] In some embodiments, the basin stand includes a frame, a first plate, and a second plate;

[0055] The bottom wall of the frame has a third opening. The first plate and the second plate are fixed to the frame at intervals and partially cover the third opening respectively. The interval between the frame, the first plate and the second plate forms a ventilation hole.

[0056] In this embodiment, the first plate and the second plate are used to form the base plate of the basket frame. The basket frame is essentially a separate unit, which is easy to manufacture. Furthermore, the first plate, the second plate, and the frame are used to form a vent hole on the bottom side of the sound unit. Since the bottom area of ​​the sound unit is large, the area of ​​the vent hole can be set to be large, so that the sound unit can have a large air volume through the vent hole, which is beneficial to improving the loudness of the sound unit at low frequencies and thus improving the low-frequency sound quality.

[0057] In some embodiments, the first magnetic circuit assembly is fixed to the first plate, the second magnetic circuit assembly is fixed to the second plate, and the first and second plates are made of magnetically conductive materials.

[0058] In this embodiment, since the first magnetic circuit assembly is fixed to the first plate, the first plate can serve as a magnetic conductor for the first magnetic circuit assembly, thereby increasing the magnetic field strength of the first magnetic gap and improving the driving force on the first voice coil. Furthermore, the first magnetic circuit assembly does not require a magnetic conductor, reducing its height. Similarly, since the second magnetic circuit assembly is fixed to the second plate, the second plate can serve as a magnetic conductor for the second magnetic circuit assembly, thereby increasing the magnetic field strength of the second magnetic gap and improving the driving force on the second voice coil. Again, the second magnetic circuit assembly does not require a magnetic conductor, reducing its height.

[0059] Secondly, embodiments of this application provide a sound-generating unit, including a frame, a diaphragm, a first magnetic circuit assembly, a second magnetic circuit assembly, a first voice coil, and a second voice coil; the first magnetic circuit assembly is fixed to the frame, the diaphragm is disposed around the first magnetic circuit assembly, the inner periphery of the diaphragm is fixedly connected to the first magnetic circuit assembly, the outer periphery of the diaphragm is fixedly connected to the frame, and the first voice coil is located in the first magnetic gap of the first magnetic circuit assembly and is fixedly connected to the vibrating part of the diaphragm; the second magnetic circuit assembly is fixed to the frame, the diaphragm is disposed around the second magnetic circuit assembly, the inner periphery of the diaphragm is fixedly connected to the second magnetic circuit assembly, the outer periphery of the diaphragm is fixedly connected to the frame, and the second voice coil is located in the first magnetic gap of the second magnetic circuit assembly and is fixedly connected to the vibrating part of the diaphragm.

[0060] In this embodiment, since the diaphragm surrounds the first and second magnetic circuit components, it effectively reuses the height space occupied by the first and second magnetic circuit components, eliminating the need to provide additional space for diaphragm vibration. Therefore, the sound-generating unit can be made thinner. Furthermore, the diaphragm needs to avoid the first and second magnetic circuit components, resulting in a smaller vibrating area. This allows for a smaller front cavity, which in turn helps to increase the high-frequency cutoff frequency of the sound-generating unit, thereby improving sound quality.

[0061] Furthermore, by setting a first magnetic circuit assembly and a second magnetic circuit assembly at intervals, i.e., setting two sets of magnetic circuit assemblies, compared to a single set of magnetic circuit assemblies, this embodiment effectively creates space between two sets of magnetic circuit assemblies inside the sound-generating unit, thus increasing the equivalent rear cavity of the sound-generating unit and improving its low-frequency sound quality. Moreover, through the cooperation of the first magnetic circuit assembly and the first voice coil, and the cooperation of the second magnetic circuit assembly and the second voice coil, the two driving mechanisms jointly drive the diaphragm to vibrate, which helps reduce diaphragm deformation during vibration, improves the stability of diaphragm vibration, and further enhances sound quality. Additionally, the two driving mechanisms also allow the diaphragm to be designed as a long strip shape with a large aspect ratio, making the sound-generating unit more adaptable.

[0062] In some embodiments, the first magnetic circuit assembly includes a first central magnetic element and a first side magnetic element, with a first magnetic gap formed between the first central magnetic element and the first side magnetic element; the first central magnetic element includes a first central magnet, a first central washer, and a second central magnet, the first central magnet, the first central washer, and the second central magnet are arranged along the vibration direction of the first voice coil, the first voice coil surrounds the first central washer and is disposed opposite to the first central washer, and the thickness of the first central washer is greater than or equal to the thickness of the first voice coil.

[0063] In this embodiment, the thickness of the first and second center washers is increased, the linearity of the BL value of the first and second magnetic gaps is improved, thereby reducing the distortion of the sound unit and improving the sound quality of the sound unit.

[0064] In some embodiments, the sound-generating unit further includes a support member, which includes a support frame, a first support portion, a second support portion, a first bending portion, and a second bending portion. The first support portion and the second support portion are fixed to the support frame at intervals. The first bending portion and the second bending portion are respectively fixed to opposite sides of the support frame. The arrangement direction of the first bending portion and the second bending portion is perpendicular to the arrangement direction of the first support portion and the second support portion. The first bending portion and the second bending portion extend along the arrangement direction of the first support portion and the second support portion, and protrude from one side of the support frame. The support frame is fixed to the vibrating part of the diaphragm. The first support portion is fixedly connected to the first voice coil, and the second support portion is fixedly connected to the second voice coil.

[0065] In this embodiment, the support member is an integral structural component with strong support capacity. When the two ends of the first and second support members are subjected to force, the arrangement of the first and second support members can strengthen the support frame, improve the bending resistance of the support member, and thus reduce the deformation of the support member under force. The support member has better support performance, which is beneficial to improving the sound quality of the sound unit.

[0066] The first and second voice coils are connected to the vibrating part of the diaphragm through a support member, which allows for flexible setting of the position of the vibrating part; it also helps to ensure uniform vibration throughout the vibrating part, thereby improving the sound quality of the sound unit.

[0067] In some embodiments, the diaphragm includes a mounting portion, a first folded ring portion, a vibrating portion, a second folded ring portion, and a third folded ring portion; the first folded ring portion is fixedly connected to the mounting portion and the vibrating portion, and the second folded ring portion and the third folded ring portion are fixedly fixed to the vibrating portion at intervals; the mounting portion is fixedly connected to the frame, the second folded ring portion is fixedly connected to the first magnetic circuit assembly, and the third folded ring portion is fixedly connected to the second magnetic circuit assembly.

[0068] In this embodiment, by providing a first folded ring, a second folded ring, and a third folded ring, the inner and outer edges of the vibrating part are connected with deformable structures, which helps to make the vibrating part vibrate smoothly. Furthermore, since the second folded ring and the third folded ring are arranged at intervals, the vibrating part has an approximate figure-eight shape, and the overall strength of the vibrating part is high, making it more stable during vibration.

[0069] In some implementations, the diaphragm is a one-piece molded structural component.

[0070] For example, the diaphragm can be integrally molded by compression molding or other methods.

[0071] In this embodiment, the diaphragm has better overall integrity, better reliability, and is easier to manufacture.

[0072] Thirdly, embodiments of this application provide a speaker module, including a housing and a sound-emitting unit as provided in any embodiment of the second aspect, wherein the sound-emitting unit is fixed to the housing.

[0073] In this embodiment, the sound-generating unit has a small thickness and good sound quality, and it is easy to set a smaller rear cavity. Therefore, the volume of the housing is easier to set to be smaller, resulting in a small speaker module with good sound quality.

[0074] In some embodiments, the sound-generating unit further includes a first top plate and a second top plate. The first top plate is fixed to the top side of the first magnetic circuit assembly and has a first surface facing away from the first magnetic circuit assembly. The second top plate is fixed to the top side of the second magnetic circuit assembly and has a second surface facing away from the first magnetic circuit assembly. The top surface of the housing is a third surface, and the first surface, the second surface and the third surface are flush.

[0075] In this embodiment, the first and second surfaces of the sound-emitting unit extend to the highest point of the speaker module in the height space of the speaker module, thereby making full use of the height space of the speaker module, reducing the influence of the thickness of the sound-emitting unit on the thickness of the speaker module, and facilitating the thin design of the speaker module. Attached Figure Description

[0076] To illustrate the technical solutions in the embodiments or background art of this application, the accompanying drawings used in the embodiments or background art of this application will be described below.

[0077] Figure 1A is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0078] Figure 1B is an exploded view of the electronic device shown in Figure 1A;

[0079] Figure 2 is a schematic block diagram of the audio playback process of the electronic device shown in Figure 1A in some usage scenarios;

[0080] Figure 3 is an exploded structural diagram of the speaker module shown in Figure 1A in some embodiments;

[0081] Figure 4 is a schematic diagram of the internal structure of the speaker module shown in Figure 1A;

[0082] Figure 5 is an exploded structural diagram of the housing component shown in Figure 3;

[0083] Figure 6 is a structural schematic diagram of the sound-generating unit shown in Figure 3 in some embodiments;

[0084] Figure 7 is an exploded structural diagram of the sound-generating unit shown in Figure 6 in some embodiments;

[0085] Figure 8 is an exploded structural diagram of the basin rack shown in Figure 7 in some embodiments;

[0086] Figure 9A is an exploded structural diagram of the first magnetic circuit assembly and the second magnetic circuit assembly shown in Figure 7;

[0087] Figure 9B is an exploded structural diagram of the first and second magnetic circuit components shown in Figure 7 in some other embodiments;

[0088] Figure 10 is a schematic diagram of a portion of the structure of the sound-generating unit shown in Figure 6 in some embodiments;

[0089] Figure 11 is a schematic diagram of the circuit board assembly shown in Figure 7 in some embodiments;

[0090] Figure 12A is a schematic diagram of a portion of the structure of the sound-generating unit shown in Figure 6 in some embodiments;

[0091] Figure 12B is a sectional view taken along point AA in Figure 12A;

[0092] Figure 13A is a structural schematic diagram of the support member shown in Figure 7 in some embodiments;

[0093] Figure 13B is a structural schematic diagram of the support member shown in Figure 7 in some other embodiments;

[0094] Figure 14 is a schematic diagram of a portion of the structure of the sound-generating unit shown in Figure 7 in some embodiments;

[0095] Figure 15 is a structural schematic diagram of the diaphragm, the first top plate, and the second top plate shown in Figure 7;

[0096] Figure 16 is a structural schematic diagram of the diaphragm, first top plate, and second top plate shown in Figure 15 from another perspective.

[0097] Figure 17A is a structural schematic diagram of the sound-generating unit shown in Figure 6 in some embodiments;

[0098] Figure 17B is a front view of the sound-generating unit shown in Figure 17A;

[0099] Figure 18 is a structural schematic diagram of the speaker module shown in Figure 3 in some embodiments;

[0100] Figure 19 is a schematic diagram of the internal structure of the electronic device shown in Figure 1A in some embodiments;

[0101] Figure 20 is an exploded structural diagram of the speaker module shown in Figure 1A in some other embodiments;

[0102] Figure 21 is an exploded structural diagram of the sound-generating unit shown in Figure 20 in some embodiments;

[0103] Figure 22 is an exploded structural diagram of the basin stand shown in Figure 21;

[0104] Figure 23 is a cross-sectional schematic diagram of the speaker module shown in Figure 20. Detailed Implementation

[0105] The embodiments of this application are described below with reference to the accompanying drawings.

[0106] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," "joining," and "joining" should be interpreted broadly. For example, "joining" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Movable connection" refers to a connection where the relative positional relationship can change after connection. "Rotary connection" refers to a connection where the relative positional relationship can change. "Sliding connection" refers to a connection where the relative positional relationship can change. Furthermore, the integrated structure obtained by a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to connect the two components. Components A and B can be arranged relative to each other such that component A is projected along the target direction to obtain projection C, and component B is projected along the target direction to obtain projection D, with projection C and projection D at least largely overlapping. In some embodiments, the majority overlap can be any of the following: projection C is entirely within projection D; or projection D is entirely within projection C; or projection C and projection D intersect each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0107] The directional terms mentioned in the embodiments of this application, such as "top," "bottom," "inner," "outer," "upper," and "lower," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0108] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. "Multiple" means at least two.

[0109] Please refer to Figures 1A and 1B. Figure 1A is a structural schematic diagram of an electronic device 1000 provided in an embodiment of this application, and Figure 1B is an exploded structural schematic diagram of the electronic device 1000 shown in Figure 1A.

[0110] In some embodiments, the electronic device 1000 can be a mobile phone, tablet computer, multimedia player, headphones, speaker, laptop computer, in-vehicle device, foldable terminal device, television, or wearable device, etc., that has audio playback capabilities. Wearable devices can be smart bracelets, smartwatches, smart headsets, smart glasses, etc. The electronic device 1000 in the embodiment shown in Figure 1A is illustrated using a mobile phone as an example. Of course, other types of electronic devices 1000 can also adopt similar structures, which will not be elaborated further below.

[0111] For example, electronic device 1000 may include housing 100, display screen 200, and speaker module 300. Housing 100 is used to protect the internal electronic components of electronic device 1000. Housing 100 may include middle frame 1001 and rear cover 1002, middle frame 1001 is connected to rear cover 1002, and middle frame 1001 and rear cover 1002 are disposed opposite to each other.

[0112] For example, the mid-frame 1001 may be located between the display screen 200 and the back cover 1002. The display screen 200 may be fixed to one side of the mid-frame 1001, and the back cover 1002 may be fixed to the side of the mid-frame 1001 facing away from the display screen 200. The display screen 200, together with the mid-frame 1001 and the back cover 1002, may enclose the interior of the electronic device 1000.

[0113] The display screen 200 can be a flexible display screen or a rigid display screen. The display screen 200 can be an organic light-emitting diode (OLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MOLED) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD) display screen, etc.

[0114] For example, the middle frame 1001 may be provided with sound outlet holes 1003. The number of sound outlet holes 1003 can be one or more. Figure 1A shows a plurality of sound outlet holes 1003. In other embodiments, the sound outlet holes 1003 may also be located on the back cover 1002, the display screen 200, the connection between the middle frame 1001 and the display screen 200, or the connection between the middle frame 1001 and the back cover 1002, etc. For example, there may be four sets of sound outlet holes, each set having multiple small holes, with all four sets located on two opposite sides of the middle frame, and four sets of sound outlet holes distributed on each side.

[0115] For example, the speaker module 300 can be installed in the housing 100, located inside the electronic device 1000. Figure 1A illustrates the speaker module 300 with dashed lines. There can be multiple speaker modules 300; these modules can operate independently or collaboratively. Different speaker modules 300 can operate in the same frequency band or in adjacent frequency bands. For example, there can be four speaker modules 300.

[0116] The speaker module 300 may have a diaphragm for vibrating and producing sound, and the diaphragm may be exposed on the surface of the speaker module 300. The speaker module 300 may be fixed to the housing 100 and together with the housing 100 form a sound outlet channel (also called a front cavity), which is connected to the sound outlet hole. When the diaphragm vibrates, it pushes the air in the sound outlet channel, causing the air in the sound outlet channel to vibrate and produce sound, which is then transmitted through the sound outlet hole, thus enabling the speaker module 300 to play sound to the outside of the electronic device 1000 through the sound outlet hole 1003.

[0117] Please refer to Figure 1A and Figure 2. Figure 2 is a schematic block diagram of the audio playback process of the electronic device 1000 shown in Figure 1A in some usage scenarios.

[0118] In some embodiments, the audio playback process of the speaker module 300 can be as follows: the electronic device 1000 decodes the audio file into a digital signal, performs digital-to-analog conversion on the digital signal to restore it to an analog signal, then amplifies the analog signal and inputs it to the speaker module 300 for audio playback. Specifically, when the voice coil of the speaker module 300 receives a current signal, the energized voice coil vibrates magnetically in the magnetic field environment of the magnetic circuit assembly of the speaker module 300, thereby causing the diaphragm to vibrate and produce sound.

[0119] In other embodiments, the electronic device 1000 may also include a plurality of speaker modules 300, which can be used to emit sound from multiple audio tracks to form stereo.

[0120] It should be noted that Figure 1A only schematically shows some components of the electronic device 1000, and the actual shape and size of these components are not limited by Figure 1A and the following figures. It should be understood that when the electronic device 1000 is in other forms, the electronic device 1000 may not include the display screen 200, or the electronic device 1000 may include multiple display screens 200.

[0121] Please refer to Figures 3 and 4. Figure 3 is an exploded structural diagram of the speaker module 300 shown in Figure 1A in some embodiments, and Figure 4 is an internal structural diagram of the speaker module 300 shown in Figure 1A.

[0122] In some embodiments, the speaker module 300 may include a housing 10 and a sound-emitting unit 20. The housing is used to fix the sound-emitting unit. For ease of description, the speaker module 300 is defined to have a length direction, a width direction, and a thickness direction. The length direction of the speaker module 300 may be parallel to the X-direction, the width direction may be parallel to the Y-direction, and the thickness direction may be parallel to the Y-direction. These directions are arranged perpendicularly to each other. The speaker module 300 and its components or structures are defined with the diaphragm exposed on one side ("top") and the side opposite to the top side ("bottom").

[0123] The housing 10 can serve as a load-bearing structure for the sound-generating unit 20, supporting and positioning the sound-generating unit 20.

[0124] For example, the housing 10 may have a first mounting groove 101. The first mounting groove 101 may be generally rectangular, and its shape may be approximately the same as that of the sound-generating unit 20. The first mounting groove 101 may be formed in the central region of the housing 10, and the housing 10 may surround the groove space of the first mounting groove 101. The first mounting groove 101 may be a through groove that penetrates the housing 10, that is, the opening size of the first mounting groove 101 on the top and bottom sides of the housing 10 is approximately the same.

[0125] For example, housing 10 may have a sound outlet groove 102. The sound outlet groove 102 may be generally rectangular and may communicate with the first mounting groove 101.

[0126] For example, the housing component 10 may have a mounting hole 103. The mounting hole 103 may penetrate the housing component 10. There may be multiple mounting holes 103, and the multiple mounting holes 103 may be arranged at intervals. The mounting hole 103 is used to pass through a fastener, which can be fixedly connected to the housing of the electronic device to install the speaker module 300 into the electronic device.

[0127] The housing 10 can form a cavity to improve the sound quality of the speaker module 300.

[0128] For example, referring to Figures 3 and 4, the housing 10 may have a first cavity 104a. The first cavity 104a may be a semi-open cavity. The first cavity 104a may have a connecting hole 1041a, which connects the first cavity 104a and the first mounting groove 101 in the housing 10. The first cavity 104a may be used to form the rear cavity of the speaker module 300. Within the housing 10, the housing 10 may have a thin-walled structure to maximize the volume of the first cavity 104a.

[0129] The sound-generating unit 20 can be roughly rectangular thin plate structure.

[0130] For example, the sound-generating unit 20 has a diaphragm 41 and a frame 1, with the diaphragm 41 fixed to the frame 1. A second cavity 201 can be formed between the diaphragm 41 and the frame 1, and the second cavity 201 can be a semi-open cavity. For example, the diaphragm 41 may have a vent 202. The vent 202 can be located on the side wall of the sound-generating unit 20. There can be multiple vents 202 to increase the flow of gas at the vents 202. One side of the diaphragm 41 is exposed outside the sound-generating unit 20. The vent 202 can connect the space on the other side of the diaphragm 41 to the external space of the sound-generating unit 20. For example, the vent 202 can be connected to the connecting hole 1041a to connect the first cavity 104a and the second cavity 201; and the vent 202 and the connecting hole 1041a can be sealed together so that the first cavity 104a and the second cavity 201 together form the rear cavity of the speaker module 300. In this case, the speaker module 300 has a larger rear cavity, which is beneficial to improving the low-frequency sound quality of the speaker module 300.

[0131] It is understandable that the sound-generating unit 20 produces sound through the vibration of the diaphragm 41.

[0132] It is understood that the sound-generating unit 20 can be sealed to the side wall of the first mounting groove 101 so that the first cavity 104a and the second cavity 201 are sealed and connected, forming the rear cavity of the speaker module 300.

[0133] Please refer to Figures 4 and 5. Figure 5 is an exploded structural diagram of the housing component 10 shown in Figure 3. The viewpoint in Figure 5 is the same as that in Figure 3 after being flipped. Figure 3 is roughly a top view, while Figure 5 is roughly a bottom view.

[0134] In some embodiments, housing 10 may include a main housing 104 and a base plate 105.

[0135] For example, the main housing 104 may generally be a cover structure. The main housing 104 may form a cover space 1041, which may be used to form a first cavity 104a. The main housing 104 may have a mating groove 1042. The mating groove 1042 may be formed on the bottom surface of the main housing 104, and the shape of the mating groove 1042 may be approximately the same as the shape of the base plate 105, and the depth of the mating groove 1042 may be less than the thickness of the base plate 105.

[0136] For example, the main housing 104 may have a first connecting hole 1043, which may be generally rectangular and extends through the main housing 104.

[0137] For example, the fixing hole 103 may be provided in the main housing 104.

[0138] For example, the base plate 105 may be generally plate-shaped. For instance, the base plate 105 may be a flat thin plate. The base plate 105 may have a second connecting hole 1051, which may be generally rectangular and extends through the base plate 105.

[0139] For example, the base plate 105 is fixedly connected to the main housing 104. The base plate 105 can be fixed to the mating groove 1042. The connection between the base plate 105 and the main housing 104 can be sealed to enclose the enclosure space 1041 through the base plate 105, that is, the base plate 105 and the main housing 104 enclose the first cavity 104a. The first connecting hole 1043 and the second connecting hole 1051 can communicate to form the first mounting groove 101 (as shown in FIG. 4). The sound outlet groove 102 can be formed in the main housing 104. On the periphery of the first mounting groove 101, the main housing 104 and the base plate 105 can be spaced apart to form a connecting hole 1041a, so that in the housing member 10, the connecting hole 1041a connects the space of the first cavity 104a and the first mounting groove 101.

[0140] Please refer to Figures 6 and 7. Figure 6 is a structural schematic diagram of the sound-emitting unit 20 shown in Figure 3 in some embodiments, and Figure 7 is an exploded structural schematic diagram of the sound-emitting unit 20 shown in Figure 6 in some embodiments.

[0141] In some embodiments, the sound-generating unit 20 includes a frame 1, a first magnetic circuit assembly 2, a second magnetic circuit assembly 3, and a vibration assembly 4.

[0142] For example, the basin frame 1 can be generally rectangular in shape, and the basin frame 1 can enclose a receiving space. The material of the basin frame 1 can be plastic or the like. The basin frame 1 can serve as the outer shell of the sound-emitting unit 20 and is used to install other components of the sound-emitting unit 20.

[0143] For example, the first magnetic circuit assembly 2 can form a first magnetic gap 2a, and the second magnetic circuit assembly 3 can form a second magnetic gap 3a. The first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 are respectively fixed to the basin frame 1. The first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 can be arranged side by side with an interval.

[0144] For example, the vibrating component 4 may include a diaphragm 41, a first voice coil 42, and a second voice coil 43. The diaphragm 41 is deformable. The diaphragm 41 can be fixed to the frame 1. The first voice coil 42 can be located in a first magnetic gap 2a, and the second voice coil 43 can be located in a second magnetic gap 3a. The first voice coil 42 can be movably connected to the frame 1 and fixedly connected to the diaphragm 41. The second voice coil 43 can be movably connected to the frame 1 and fixedly connected to the diaphragm 41. The first voice coil 42 and the second voice coil 43 can each be formed by winding wire. The first voice coil 42 and the second voice coil 43 can be arranged along a first direction. For example, the first direction can be the length direction of the speaker module 300.

[0145] It is understood that the sound-generating unit 20 may include more or fewer components. When the sound-generating unit 20 includes more components, it may also include a circuit board assembly 5, a support member 6, an annular member 7, a first top plate 8, and a second top plate 9.

[0146] Please refer to Figures 7 and 8. Figure 8 is an exploded structural diagram of the basin stand 1 shown in Figure 7 in some embodiments.

[0147] In some embodiments, the basin stand 1 may include a frame 11, a first plate 12, and a second plate 13.

[0148] For example, the outer edge of the frame 11 can be rectangular. The frame 11 as a whole can be approximately figure-eight shaped. The frame 11 can have a first opening 111 and a second opening 112. The shape of the first opening 111 can be approximately the same as the shape of the first plate 12, and the shape of the second opening 112 can be approximately the same as the shape of the second plate 13. A reinforcing rib 113 can be formed between the first opening 111 and the second opening 112, which can strengthen the overall strength of the frame 11.

[0149] For example, ventilation holes 202 can be provided at intervals on the frame 11. Ventilation holes 202 can be provided on all four side walls of the outer edge of the frame 11.

[0150] For example, the first plate 12 and the second plate 13 can each be generally thin plate-shaped structures. The first plate 12 and the second plate 13 can each be rectangular structures.

[0151] In this design, the first plate 12 and the second plate 13 are fixedly connected to the frame 11. The first plate 12 is installed in the first opening 111 and covers and seals the first opening 111. The first plate 12 can be sealed to the frame 11. The second plate 13 is installed in the second opening 112 and covers and seals the second opening 112. The second plate 13 can be sealed to the frame 11. In this configuration, the basin frame 1 has a simple structure and is easy to manufacture. In some other embodiments, the basin frame 1 can also be a one-piece molded structural component.

[0152] For example, the first plate 12 and the second plate 13 can each be made of a magnetically conductive material. In this case, the first plate 12 and the second plate 13 can serve as magnetically conductive components of the speaker module 300. The materials of the first plate 12 and the second plate 13 are not limited thereto.

[0153] For example, the basin stand 1 may also have a second mounting groove 14. The second mounting groove 14 may be located on the frame 11, the shape of the second mounting groove 14 may be approximately the same as the shape of the frame 11, and the size of the second mounting groove 14 may be smaller than the size of the frame 11.

[0154] For example, the basin stand 1 may also have a first clearance groove 15 and a second clearance groove 16. The first clearance groove 15 and the second clearance groove 16 may each be approximately annular in structure. The first clearance groove 15 may be located on the first plate 12. The second clearance groove 16 may be located on the second plate 13.

[0155] Please refer to Figures 7 and 9A. Figure 9A is an exploded structural diagram of the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 shown in Figure 7.

[0156] In some embodiments, the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 may be arranged along a first direction. The first magnetic circuit assembly 2 may include a first central magnetic element 21 and a first side magnetic element 22, with the first side magnetic element 22 surrounding the first central magnetic element 21. A first magnetic gap 2a is formed between the first side magnetic element 22 and the first central magnetic element 21. For example, the first direction may be parallel to the X direction.

[0157] The first central magnetic component 21 can be roughly rectangular in shape.

[0158] For example, the first central magnetic component 21 may include a first central magnet 211, a first central washer 212, and a second central magnet 213, which are stacked sequentially, and their shapes and sizes may be substantially the same. The first central magnet 211 may be located on the top side of the first central washer 212.

[0159] The first magnetic element 22 can be roughly ring-shaped. The first magnetic element 22 includes a first magnetic part 221 and a second magnetic part 222, which are spaced apart, and the first central magnetic element 21 is located between the first magnetic part 221 and the second magnetic part 222.

[0160] For example, the first side magnetic component 22 may include a first side magnet 224, a first side washer 225, and a second side magnet 226, which are stacked sequentially. The first side magnet 224 may be located on top of the first side washer 225. The shapes of the first side magnet 224 and the first side washer 225 may be substantially the same. The shape of the second side magnet 226 may be substantially the same as that of the first side washer 225, but the outer dimensions of the second side magnet 226 may be larger than those of the first side washer 225.

[0161] In this configuration, both ends of the first side magnetic part 221 and the second side magnetic part 222 are rounded. Therefore, in the arrangement direction of the first side magnetic part 221 and the second side magnetic part 222, as shown in the Y direction of Figure 9A, the distance between the ends of the first side magnetic part 221 and the second side magnetic part 222 is less than the width of the first central magnetic element 21; that is, the width of the first clearance space 223 is less than the width of the first central magnetic element 21. At this time, the interval between the first side magnetic part 221 and the second side magnetic part 222 is small, and their volumes are relatively large, fully utilizing the space occupied by the first magnetic circuit assembly 2, which is beneficial for increasing the magnetic field strength of the first magnetic gap 2a.

[0162] For example, the first side magnet 224 may include four sub-magnets, which are spaced apart and each has a rounded corner. Similarly, the first side washer 225 may also include four sub-wafers, which are spaced apart and each has a rounded corner. The second side magnet 226 includes four sub-magnets, which are spaced apart and each has a rounded corner. The sub-magnets of the first side magnet 224, the sub-wafers of the first side washer 225, and the sub-magnets of the second side magnet 226 are respectively configured in a one-to-one correspondence. In other examples, the first side magnet 224 may include two sub-magnets or other numbers of sub-magnets; this embodiment does not impose a specific limitation.

[0163] In some embodiments, the first magnetic circuit assembly 2 may include a first magnet layer 23, a first washer layer 24, and a second magnet layer 25, which are stacked sequentially along the vibration direction (i.e., the Z direction) of the first voice coil 42.

[0164] The first magnet layer 23 may include a first central magnet 211 and a first side magnet 224; the first washer layer 24 may include a first central washer 212 and a first side washer 225; and the second magnet layer 25 may include a second central magnet 213 and a second side magnet 226.

[0165] In some embodiments, the second magnetic circuit assembly 3 may include a second central magnetic element 31 and a second side magnetic element 32, the second side magnetic element 32 surrounding the second central magnetic element 31. A second magnetic gap 3a is formed between the second side magnetic element 32 and the second central magnetic element 31.

[0166] For example, the second central magnetic element 31 may include a third central magnet 311, a second central washer 312, and a fourth central magnet 313.

[0167] For example, the second magnetic element 32 may include a third magnetic part 321 and a fourth magnetic part 322.

[0168] For example, the second side magnetic element 32 may include a third side magnet 324, a second side washer 325, and a fourth side magnet 326.

[0169] The specific structures of the second central magnetic element 31 and the second side magnetic element 32 can be referred to the relevant settings of the first central magnetic element 21 and the first side magnetic element 22, which will not be described in detail in this embodiment.

[0170] In some embodiments, the second magnetic circuit assembly 3 includes a third magnet layer 33, a second washer layer 34, and a fourth magnet layer 35, which are stacked sequentially along the vibration direction (i.e., the Z direction) of the first voice coil 42.

[0171] For example, the third magnet layer 33 may include a third central magnet 311 and a third side magnet 324, the second washer layer 34 may include a second central washer 312 and a second side washer 325, and the fourth magnet layer 35 may include a fourth central magnet 313 and a fourth side magnet 326.

[0172] Please refer to Figure 9B, which is an exploded structural diagram of the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 shown in Figure 7 in some other embodiments. The first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 shown in Figure 9B may include most of the technical features of the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 shown in Figure 9A. For the technical features that are the same in both, this embodiment will not repeat them. The following mainly describes the differences between the two.

[0173] In some embodiments, the middle portions of the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 may be hollowed out.

[0174] For example, through holes can be formed in the middle portions of the first central magnet 211, the first central washer 212, and the second central magnet 213. The through holes 2111 of the first central magnet 211, 2121 of the first central washer 212, and 2131 of the second central magnet 213 can be coaxially arranged, and each can be approximately rectangular. The size of the through hole 2121 of the first central washer 212 can be larger than that of the through holes 2111 of the first central magnet 211 and 2131 of the second central magnet 213. For example, the area of ​​the through hole 2121 of the first central washer 212 can be less than half the area of ​​the first central washer 212. In this example, by forming through holes in the first magnetic circuit assembly 2, material is removed from the first magnetic circuit assembly 2, and the area of ​​the through hole 2121 of the first central washer 212 is relatively large, thereby reducing the weight of the first magnetic circuit assembly 2 without reducing its magnetic strength.

[0175] For example, the third central magnet 311 can have a through hole 3111, the second central washer 312 can have a through hole 3121, and the fourth central magnet 313 can have a through hole 3131. For details, please refer to the relevant settings of the first magnetic circuit assembly 2. This embodiment will not repeat them.

[0176] Please refer to Figure 10, which is a schematic diagram of the structure of part of the sound-generating unit 20 shown in Figure 6 in some embodiments.

[0177] In some embodiments, the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 may be mounted on the basin frame 1.

[0178] For example, the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 can be located in the spaces on both sides of the reinforcing rib 113. The first magnetic circuit assembly 2 can be fixed to the first plate 12, and the first magnetic gap 2a and the first clearance groove 15 can be correspondingly arranged in the plate surface direction of the first plate 12. For example, the first magnetic gap 2a and the first clearance groove 15 can overlap in the Z direction. The second central magnet 213 (see Figure 9A) and the second side magnet 226 (see Figure 9A) are fixed to the first plate 12. The second magnetic circuit assembly 3 can be fixed to the second plate 13, and the second magnetic gap 3a and the second clearance groove 16 can be correspondingly arranged in the plate surface direction of the second plate 13. For example, the second magnetic gap 3a and the second clearance groove 16 can overlap in the Z direction. The fourth central magnet 313 (see Figure 9A) and the fourth side magnet 326 (see Figure 9A) are fixed to the second plate 13.

[0179] Two first clearance spaces 223 are formed between the two ends of the first side magnetic part 221 and the two ends of the second side magnetic part 222, and the two first clearance spaces 223 are arranged along the first direction. Two second clearance spaces 323 are formed between the two ends of the third side magnetic part 321 and the two ends of the fourth side magnetic part 322, and the two second clearance spaces 323 are arranged along the first direction.

[0180] In some embodiments, when the first plate 12 and the second plate 13 are made of magnetically conductive material, since the first magnetic circuit assembly 2 is fixed to the first plate 12, the first plate 12 can serve as a magnetically conductive element for the first magnetic circuit assembly 2, thereby increasing the magnetic field strength of the first magnetic gap 2a. This is beneficial for increasing the driving force on the first voice coil 42, and the first magnetic circuit assembly 2 does not need to be equipped with a magnetically conductive element, thus reducing the height of the first magnetic circuit assembly 2. Similarly, since the second magnetic circuit assembly 3 is fixed to the second plate 13, the second plate 13 can serve as a magnetically conductive element for the second magnetic circuit assembly 3, thereby increasing the magnetic field strength of the second magnetic gap 3a. This is beneficial for increasing the driving force on the second voice coil 43, and the second magnetic circuit assembly 3 does not need to be equipped with a magnetically conductive element, thus reducing the height of the second magnetic circuit assembly 3.

[0181] Please refer to Figure 11, which is a schematic diagram of the structure of the circuit board assembly 5 shown in Figure 7 in some embodiments.

[0182] In some embodiments, the circuit board assembly 5 may include a flexible circuit board 51, a first reinforcement 52, and a second reinforcement 53.

[0183] The flexible circuit board 51 can be deformed. The main deformable direction of the flexible circuit board 51 is its thickness direction (e.g., the Z-direction), and the flexible circuit board 51 can have relatively low stiffness in its thickness direction. The deformability of the flexible circuit board 51 in its thickness direction can be minimized, while its stiffness can be maximized.

[0184] The flexible circuit board 51 may be conductive.

[0185] For example, the flexible circuit board 51 may include an outer ring portion 511, a first deformable portion 512, a first fixing portion 513, a second deformable portion 514, and a second fixing portion 515. The first deformable portion 512 is fixedly connected to the outer ring portion 511 and the first fixing portion 513. The second deformable portion 514 is fixedly connected to the outer ring portion 511 and the second fixing portion 515. The outer ring portion 511 may be a rectangular ring structure. The first deformable portion 512 and the second deformable portion 514 are respectively bent strip structures. The first fixing portion 513 and the second fixing portion 515 are respectively sheet structures. The first fixing portion 513 and the second fixing portion 515 may be arranged along the length direction of the flexible circuit board 51.

[0186] For example, the flexible circuit board 51 can be a one-piece structure. For instance, the flexible circuit board 51 can be formed by one-piece cutting.

[0187] Among them, the first reinforcing member 52 and the second reinforcing member 53 also have deformation capabilities.

[0188] For example, the first reinforcing member 52 may include a first end 521, a connecting portion 522, and a second end 523, with the connecting portion 522 fixedly connecting the first end 521 and the second end 523. The first end 521 and the second end 523 may each be a flat plate structure to facilitate fixation to the flexible circuit board 51. In the Y direction, the length of the first end 521 may be greater than the length of the second end 523; in the X direction, the width of the first end 521 may be less than the width of the second end 523. The connecting portion 522 may be a curved thin plate structure to facilitate deformation. In this case, the shape of the first reinforcing member 52 is designed to adapt and connect the first end 521 of the first reinforcing member 52 to the shape of the outer ring portion 511 of the flexible circuit board 51, and to adapt and connect the second end 523 of the first reinforcing member 52 to the shape of the first fixing portion 513 of the flexible circuit board 51, thereby improving the reinforcing effect of the first reinforcing member 52 on the flexible circuit board 51.

[0189] For example, the second reinforcing member 53 may include a first end portion 531, a connecting portion 532, and a second end portion 533. The specific structure of the second reinforcing member 53 can be referred to the structure of the first reinforcing member 52, and will not be described again in this example.

[0190] Please refer to Figures 12A and 12B. Figure 12A is a schematic diagram of the structure of part of the sound-generating unit 20 shown in Figure 6 in some embodiments, and Figure 12B is a cross-sectional view taken along point AA in Figure 12A.

[0191] In some embodiments, the first voice coil 42 is located in the first magnetic gap 2a and is movably connected to the frame 1.

[0192] For example, a first voice coil 42 surrounds a first central magnetic element 21, and a first side magnetic element 22 surrounds the first voice coil 42.

[0193] For example, the flexible circuit board 51 connects the first voice coil 42 and the frame 1. The outer ring 511 of the flexible circuit board 51 is located in the second mounting groove 14 and is fixedly connected to the groove wall of the second mounting groove 14. The first fixing part 513 can be fixedly connected to the first voice coil 42. Furthermore, the first fixing part 513 can be electrically connected to the first voice coil 42. The first fixing part 513 can be located in a first clearance space 223 away from the second magnetic circuit assembly 3. The first deformable part 512 can be located in the space between the frame 11 and the first magnetic circuit assembly 2. Since the first deformable part 512 can elastically deform, the first voice coil 42 can move relative to the frame 1. The first voice coil 42 can move mainly along the central axis direction. The main deformation direction corresponding to the first deformable part 512 is the central axis direction of the first voice coil 42. In the direction perpendicular to the central axis of the first voice coil 42 (the direction in the XY plane in Figure 12B), the first deformable part 512 is used to position the first voice coil 42 and prevent the first voice coil 42 from deflecting during sound generation. At this time, the flexible circuit board 51 is used to transmit electrical signals to the first voice coil 42 and the second voice coil 43. In addition, the flexible circuit board 51 is also used to position the first voice coil 42 and the second voice coil 43 to prevent the axis of the first voice coil 42 and the axis of the second voice coil 43 from deflecting, so that the first voice coil 42 and the second voice coil 43 vibrate in a straight and stable manner.

[0194] For example, in the direction of the central axis of the first voice coil 42 (Z direction in Figure 12B), the first voice coil 42 can be located on the top side of the first clearance groove 15. In this case, the first clearance groove 15 increases the distance between the first voice coil 42 and the first plate 12, which is equivalent to increasing the space required for the vibration of the first voice coil 42, thereby facilitating the thin design of the sound-generating unit 20.

[0195] For example, the first reinforcing member 52 is fixedly connected to the flexible circuit board 51. The first end 521 of the first reinforcing member 52 is fixedly connected to the bottom side of the outer ring portion 511, and the second end 523 of the first reinforcing member 52 is fixedly connected to the bottom side of the first fixing portion 513. The connecting portion 522 of the first reinforcing member 52 is located on the bottom side of the first deformable portion 512. The connecting portion 522 of the first reinforcing member 52 can deform in the direction of the central axis of the first voice coil 42, and reinforces the flexible circuit board 51 in a direction perpendicular to the central axis of the first voice coil 42, thereby improving the positioning effect of the flexible circuit board 51 on the first voice coil 42.

[0196] In some embodiments, the second voice coil 43 is located in the second magnetic gap 3a and is movably connected to the frame 1.

[0197] Similarly, the second fixing part 515 can be fixedly connected to the second voice coil 43. Furthermore, the second fixing part 515 can be electrically connected to the second voice coil 43. The first fixing part 513 can be located within a second clearance space 323 away from the first magnetic circuit assembly 2. The second deformable part 514 can be located within the space between the frame 11 and the second magnetic circuit assembly 3. Because the second deformable part 514 can elastically deform, the second voice coil 43 can move relative to the frame 1. The second voice coil 43 can vibrate primarily along its own central axis. The main deformation direction corresponding to the second deformable part 514 is parallel to the central axis direction of the second voice coil 43. In a direction perpendicular to the central axis of the second voice coil 43, the second deformable part 514 positions the second voice coil 43 to prevent deflection during movement.

[0198] For example, in the direction of the central axis of the second voice coil 43 (Z direction in Figure 12B), the second voice coil 43 can be located on the top side of the second clearance groove 16 (refer to Figure 10). In this case, the second clearance groove 16 increases the distance between the second voice coil 43 and the second plate 13, which is equivalent to increasing the space required for the vibration of the second voice coil 43, thereby facilitating the thinner design of the sound-generating unit 20.

[0199] For example, the second reinforcing member 53 is fixedly connected to the flexible circuit board 51. The first end 531 of the second reinforcing member 53 is fixedly connected to the bottom side of the outer ring portion 511, the second end 533 of the second reinforcing member 53 is fixedly connected to the bottom side of the second fixing portion 515, and the connecting portion 532 of the second reinforcing member 53 is located on the bottom side of the second deformable portion 514. The connecting portion 532 of the second reinforcing member 53 can deform in the direction of the central axis of the second voice coil 43, and reinforce the flexible circuit board 51 in a direction perpendicular to the central axis of the second voice coil 43, thereby improving the positioning effect of the flexible circuit board 51 on the second voice coil 43.

[0200] Please refer to Figure 13A, which is a structural schematic diagram of the support member 6 shown in Figure 7 in some embodiments. The viewpoint of Figure 13A is the viewpoint of the support member 6 in Figure 7 after being flipped, and Figure 13A is roughly a bottom viewpoint.

[0201] In some embodiments, the outer edge of the support 6 can be a generally rectangular thin plate structure.

[0202] For example, the support member 6 may form a first receiving hole 61 and a second receiving hole 62 that are spaced apart. The first receiving hole 61 and the second receiving hole 62 pass through the support member 6. The support member 6 as a whole may have a generally figure-eight shaped structure.

[0203] For example, the support member 6 may include a support frame 63, a first support portion 64, and a second support portion 65. The first support portion 64 is fixedly connected to the support frame 63. For instance, the first support portion 64 may include two opposing first support pieces 641 and 642. The first support portion 64 may protrude towards the bottom relative to the support frame 63, and in a direction perpendicular to the support frame 63, the projection of the first support portion 64 coincides with the first receiving hole 61. The second support portion 65 may include two opposing first support pieces 651 and 652. The second support portion 65 may protrude towards the bottom relative to the support frame 63, and in a direction perpendicular to the support frame 63, the projection of the second support portion 65 coincides with the second receiving hole 62.

[0204] In this embodiment, the support member 6 is an integral structural component with strong support capacity.

[0205] Please refer to Figure 13B, which is a structural schematic diagram of the support member 6 shown in Figure 7 in some other embodiments. The support member 6 shown in Figure 13B may include most of the technical features of the support member 6 shown in Figure 13A. For the technical features that are the same in both, this embodiment will not repeat them. The following mainly describes the differences between the two.

[0206] In some embodiments, the support member 6 may further include a first bend 66 and a second bend 67. The first bend 66 and the second bend 67 are fixed to the support frame 63.

[0207] For example, the first bend 66 and the second bend 67 are respectively fixed to two opposite sides of the support frame 63. The first bend 66 and the second bend 67 extend along the arrangement direction of the first support 64 and the second support 65. The first bend 66 and the second bend 67 may protrude toward the bottom side relative to the support frame 63.

[0208] In this embodiment, when the two ends of the arrangement direction of the first support part 64 and the second support part 65 are subjected to force, the arrangement direction of the first support part 64 and the second support part 65 can strengthen the support frame 63, improve the bending resistance of the support member 6, thereby reducing the deformation of the support member 6 under force, and the support performance of the support member 6 is better, which is conducive to improving the sound quality of the sound unit.

[0209] Please refer to Figure 14, which is a schematic diagram of the structure of part of the sound-generating unit 20 shown in Figure 7 in some embodiments.

[0210] In some embodiments, the support 6 may be fixedly connected to the first voice coil 42 and the second voice coil 43.

[0211] For example, the first support portion 64 can be fixedly connected to the sidewall of the first voice coil 42. The first support piece 641 and the second support piece 642 of the first support portion 64 can be located in two first clearance spaces 223. One support piece of the first support portion 64 that is away from the second voice coil 43 (i.e., the first support piece 641 of the first support portion 64) can be fixedly connected to the first fixing portion 513 of the flexible circuit board 51 (see FIG. 12B).

[0212] For example, the second support portion 65 can be fixedly connected to the sidewall of the second voice coil 43. The first support piece 651 and the second support piece 652 of the second support portion 65 can be located in two second clearance spaces 323. One support piece of the second support portion 65 that is away from the first voice coil 42 (i.e., the first support piece 651 of the second support portion 65) can be fixedly connected to the second fixing portion 515 of the flexible circuit board 51 (see FIG. 12B).

[0213] The support frame 63 of the support member 6 can be located in the space between the first magnetic circuit assembly 2, the second magnetic circuit assembly 3 and the frame 11.

[0214] In some embodiments, the first voice coil 42 may have a first end and a second end disposed opposite to each other in its length direction. The first support piece 641 and the second support piece 642 of the first support portion 64 are arranged along a first direction, with the first support piece 641 fixedly connected to the first end of the first voice coil 42 and the second support piece 642 fixedly connected to the second end of the first voice coil 42. The second voice coil 43 may have a first end and a second end disposed opposite to each other in its length direction. The first support piece 651 and the second support piece 652 of the second support portion 65 are arranged along a first direction, with the first support piece 651 fixedly connected to the first end of the second voice coil 43 and the second support piece 652 fixedly connected to the second end of the second voice coil 43. In this case, the length direction of the first voice coil 42 is parallel to the first direction, and the length direction of the first voice coil 42 is the same as the length direction of the sound-emitting unit 20, which is beneficial for the narrow design of the sound-emitting unit 20. The first support member 6 is directly fixedly connected to the two short shafts of the first voice coil 42 through the first support part 64, and directly fixedly connected to the two short shafts of the second voice coil 43 through the second support part 65, which simplifies the structure of the support member 6 and improves the reliability of the sound generating unit 20.

[0215] Please refer to Figures 15 and 16. Figure 15 is a structural schematic diagram of the diaphragm 41, the first top plate 8, and the second top plate 9 shown in Figure 7. Figure 16 is a structural schematic diagram of the diaphragm 41, the first top plate 8, and the second top plate 9 shown in Figure 15 from another perspective. The perspective of Figure 16 is the perspective of Figure 15 after being flipped.

[0216] In some embodiments, the diaphragm 41 may have a first through hole 411 and a second through hole 412, which are arranged side by side and spaced apart. The first through hole 411 and the second through hole 412 may have the same shape.

[0217] For example, the diaphragm 41 may include a mounting portion 413, a first folded ring portion 414, a vibrating portion 415, a second folded ring portion 416, and a third folded ring portion 417. The second folded ring portion 416 and the third folded ring portion 417 are spaced apart. The vibrating portion 415 is fixedly connected to both the second folded ring portion 416 and the third folded ring portion 417, and the vibrating portion 415 surrounds the outer edges of both the second folded ring portion 416 and the third folded ring portion 417. The first folded ring portion 414 is fixedly connected to the vibrating portion 415 and surrounds the outer edge of the vibrating portion 415. The mounting portion 413 is fixedly connected to the first folded ring portion 414 and surrounds its outer edge. The vibrating portion 415 may have a generally figure-eight shaped structure. The second folded ring portion 416 and the third folded ring portion 417 may have approximately the same shape. The first folded ring portion 414, the second folded ring portion 416, and the third folded ring portion 417 are deformable, allowing the vibrating portion 415 to vibrate in a direction parallel to the axis of the first through hole 411 or the axis of the second through hole 412. The axis of the first through hole 411 can be parallel to the Z direction. In this example, by providing the first folded ring portion 414, the second folded ring portion 416, and the third folded ring portion 417, the inner and outer edges of the vibrating portion 415 are connected with deformable structures, which helps to make the vibrating portion 415 vibrate smoothly. Furthermore, since the second folded ring portion 416 and the third folded ring portion 417 are spaced apart, the vibrating portion 415 has an approximate figure-eight shape, resulting in higher overall strength and greater stability during vibration.

[0218] The second folded ring portion 416 forms the first through hole 411, and the third folded ring portion 417 forms the second through hole 412.

[0219] For example, the diaphragm 41 can be a one-piece structural component. In this case, the diaphragm 41 has better overall integrity, better reliability, and is easier to manufacture. For example, the diaphragm 41 can be integrally molded by compression molding or other methods. In some other examples, the diaphragm 41 can also be a split structural component.

[0220] In some embodiments, the first top plate 8 and the second top plate 9 can each be approximately rectangular plate-like structures. The shape of the first top plate 8 can be approximately the same as the shape of the first through hole 411, and the size of the first top plate 8 can be larger than the size of the first through hole 411. The shape of the second top plate 9 can be approximately the same as the shape of the second through hole 412, and the size of the second top plate 9 can be larger than the size of the second through hole 412.

[0221] For example, the stiffness of the first top plate 8 and the second top plate 9 can be greater than the stiffness of the diaphragm 41. For instance, the first top plate 8 and the second top plate 9 can each be made of a rigid material. In some examples, the first top plate 8 and the second top plate 9 can be made of a magnetically conductive material. The materials of the first top plate 8 and the second top plate 9 are not limited thereto.

[0222] In some embodiments, the first top plate 8 and the second top plate 9 can be fixedly connected to the diaphragm 41. The first top plate 8 can cover the first through hole 411 and is fixedly connected to the edge of the second folded ring portion 416. The first top plate 8 and the second folded ring portion 416 can be sealed together. The second top plate 9 can cover the second through hole 412 and is fixedly connected to the edge of the third folded ring portion 417. The second top plate 9 and the third folded ring portion 417 can be sealed together.

[0223] Please refer to Figures 17A and 17B. Figure 17A is a structural schematic diagram of the sound-emitting unit 20 shown in Figure 6 in some embodiments, and Figure 17B is a front view of the sound-emitting unit 20 shown in Figure 17A.

[0224] In some embodiments, the diaphragm 41 may be fixedly connected to the frame 1, the support 6, the first magnetic circuit assembly 2, and the second magnetic circuit assembly 3.

[0225] For example, the mounting portion 413 of the diaphragm 41 can be mated and fixedly connected to the top of the frame 11, and the mounting portion 413 can cover the top of the frame 11 and be sealed at the connection between the two.

[0226] For example, the vibrating part 415 of the diaphragm 41 can be fixedly connected to the support frame 63 of the support member 6. The shape of the vibrating part 415 is adapted to the shape of the support member 6, and the connection area between the two is large, making the connection more reliable. Since the support member 6 is fixedly connected to the first voice coil 42 and the second voice coil 43, the first voice coil 42 and the second voice coil 43 are fixedly connected to the vibrating part 415 of the diaphragm 41. When the first voice coil 42 and the second voice coil 43 vibrate, the vibrating part 415 vibrates synchronously through the drive of the support member 6. At this time, the first voice coil 42 and the second voice coil 43 are connected to the vibrating part 415 of the diaphragm 41 through the support member 6, which is conducive to flexibly setting the position of the vibrating part 415; and it is also conducive to uniform vibration of the vibrating part 415, thereby improving the sound quality of the sound-producing unit 20.

[0227] For example, the first top plate 8 can be fixedly connected to the first magnetic circuit assembly 2. The first top plate 8 can face the first central magnet 211 and is fixedly connected to the first central magnet 211. The second top plate 9 can be fixedly connected to the second magnetic circuit assembly 3. The second top plate 9 can face the second central magnet 213 and is fixedly connected to the second central magnet 213. At this time, the second folded ring portion 416 is equivalent to being fixed between the first side magnetic member 22 and the first top plate 8, and the third folded ring portion 417 is equivalent to being fixed between the second side magnetic member 32 and the second top plate 9. It is understood that when the first voice coil 42 and the second voice coil 43 vibrate, the first top plate 8 and the second top plate 9 do not vibrate. In this example, the diaphragm 41 is fixedly connected to the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 via the first top plate 8 and the second top plate 9, respectively. This facilitates the alignment of the vibrating part 415 of the diaphragm 41 with the position of the support member 6, and also allows for the appropriate size and shape of the first folded ring part 414, the second folded ring part 416, and the third folded ring part 417. In other examples, the diaphragm 41 can be directly connected to the magnetic circuit assembly. In other examples, the second folded ring part 416 can be located between the first side magnet 224 and the first side washer 225, and the second folded ring part 416 can be located between the second side magnet 226 and the second side washer 325.

[0228] For example, the first top plate 8 has a first surface 81, and the second top plate 9 has a second surface 91. The vibrating part 415 can be recessed relative to the first surface 81 of the first top plate 8 and the second surface 91 of the second top plate 9. In other words, the height of the vibrating part 415 is lower than the height of the first top plate 8 and the second top plate 9. The height space between the first top plate 8 and the vibrating part 415 can serve as part of the space for the vibrating part 415 to vibrate upward. The first surface 81 and the second surface 91 can be flush. It can be understood that the space between the vibrating part 415 and the first plate 12 and the second plate 13 can serve as the space for the vibrating part 415 to vibrate downward. At this time, the height space required for the vibration of the vibrating part 415 coincides with the height space of the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3, which is equivalent to reusing the height space required for setting the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3. There is no need to provide a separate vibration space in the height direction for the vibration of the diaphragm 41, which is beneficial to the thin design of the sound generating unit 20. Therefore, by reducing the height of the diaphragm 41 to be lower than the height of the first top plate 8 and the second top plate 9, it is beneficial to the thinner design of the speaker module 300.

[0229] It is understood that the diaphragm 41 can be sealed to the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 of the frame 1 to form the first cavity 104a of the sound-generating unit 20.

[0230] Understandably, the first top plate 8 and the second top plate 9 are exposed relative to the diaphragm 41.

[0231] In this embodiment, when the first voice coil 42 and the second voice coil 43 are energized, the first voice coil 42 interacts with the first magnetic circuit assembly 2, and the second voice coil 43 interacts with the second magnetic circuit assembly 3, causing the first voice coil 42 and the second voice coil 43 to vibrate. At this time, the circuit board assembly 5 energizes the first voice coil 42 and the second voice coil 43 and positions them to prevent them from deflecting or swaying during vibration. Furthermore, the support member 6 drives the vibrating part 415 of the diaphragm 41 to vibrate synchronously along the vibration direction of the first voice coil 42, thereby producing sound.

[0232] In some embodiments, the annular member 7 can be fixedly connected to the diaphragm 41 and surround the first through hole 411 and the second through hole 412. The annular member 7 may include a first ring member 71 and a second ring member 72, both made of metal. The first ring member 71 is located between the second folded ring portion 416 and the first magnetic circuit assembly 2, and is fixedly connected to both. The second ring member 72 is located between the third folded ring portion 417 and the second magnetic circuit assembly 3, and is fixedly connected to both.

[0233] For example, the stiffness of the annular member 7 can be greater than the stiffness of the diaphragm 41. For instance, the annular member 7 can be made of a metallic material, such as steel. The shape of the first annular member 71 can be approximately the same as the shape of the first through hole 411, and the shape of the second annular member 72 can be approximately the same as the shape of the second through hole 412.

[0234] For example, the first ring member 71 is fixed to the side edge of the second folded ring portion 416 opposite to the first top plate 8 and surrounds the first through hole 411. The second ring member 72 is fixed to the side edge of the third folded ring portion 417 opposite to the second top plate 9 and surrounds the second through hole 412.

[0235] In some examples, the first ring 71 can be fixedly connected to the first side magnetic element 22, and the second ring 72 can be fixedly connected to the second side magnetic element 32, so that the diaphragm 41 is also fixedly connected to the first side magnetic element 22 and the second side magnetic element 32.

[0236] In this embodiment, the first ring member 71 and the second ring member 72 have high rigidity. After they are fixedly connected to the diaphragm 41, on the one hand, the fixing of the diaphragm 41 to the first top plate 8 and the second top plate 9 is more reliable, and on the other hand, they can also support the first folded ring portion 414 and the second folded ring portion 416, thereby improving the fixing effect of the first folded ring portion 414 and the second folded ring portion 416 and facilitating the deformation of the first folded ring portion 414 and the second folded ring portion 416.

[0237] In some embodiments, the first top plate 8 and the second top plate 9 are made of magnetically conductive material. In this case, since the first top plate 8 is connected to the first magnetic circuit assembly 2, the first top plate 8 can serve as part of the first magnetic circuit assembly 2 and form a magnetic circuit. Similarly, the second top plate 9 is connected to the second magnetic circuit assembly 3, and the second top plate 9 can serve as part of the second magnetic circuit assembly 3 and form a magnetic circuit.

[0238] In this embodiment, the first top plate 8 and the second top plate 9 are used not only to fix and connect the diaphragm 41, but also to seal the connection between the diaphragm 41 and the frame 1. The first top plate 8 and the second top plate 9 also form a magnetic circuit, which helps to increase the magnetic field strength of the first magnetic gap 2a and the second magnetic gap 3a, thereby increasing the driving force when the first magnetic circuit assembly 2 and the second magnetic circuit assembly 3 interact with the first voice coil 42 and the second voice coil 43, respectively. Furthermore, there is no need to provide magnetic conductive elements on the top side of the first magnetic circuit assembly 2 and the top side of the second magnetic circuit assembly 3, which is beneficial for the thinner design of the sound-generating unit 20.

[0239] In some embodiments, as described above, the first magnet layer, the first washer layer, and the second magnet layer are stacked. In the first magnetic circuit assembly 2, the first central magnet 211 and the first side magnet 224 can form a set of magnetic circuit structures, and the second central magnet 213 and the second side magnet 226 can form a set of magnetic circuit structures. The first magnetic circuit assembly 2 is equivalent to forming two sets of magnetic circuit structures, and the first central washer 212 and the first side washer 225 conduct magnetics, so the first magnetic gap 2a of the first magnetic circuit assembly 2 has a strong magnetic field strength; and the two sets of magnetic circuit structures are arranged in the direction of the central axis of the first voice coil 42, and the magnetic field strength linearity of the first magnetic gap 2a in the direction of the central axis of the first voice coil 42 is good, which is beneficial to improving the sound quality of the sound unit 20.

[0240] In some embodiments, in the axial direction of the first voice coil 42, the thickness of the first center washer 212 is greater than or equal to the thickness of the first voice coil 42, and the thickness of the second center washer 312 is greater than or equal to the thickness of the second voice coil 43. This is equivalent to increasing the thickness of the first center washer 212 and the second center washer 312, improving the linearity of the BL value of the first magnetic gap 2a and the BL value of the second magnetic gap 3a, thereby reducing the distortion of the sound-generating unit 20 and improving the sound quality of the sound-generating unit 20. Here, the BL value refers to the product of the magnetic gap magnetic field strength B and the voice coil conductor length L.

[0241] In some embodiments, by providing a first clearance space 223 in the first magnetic circuit assembly 2 and a second clearance space 323 in the second magnetic circuit assembly 3, movement space is provided for other components of the sound-generating unit 20, and the space occupied by the first side magnetic element 22 and the second side magnetic element 32 is reduced. This improves the utilization rate of the internal space of the sound-generating unit 20, increases the equivalent space of the sound-generating unit 20 used to form the rear cavity, and helps to improve the sound quality of the sound-generating unit 20.

[0242] In some embodiments, by setting a first magnetic circuit component 2 and a second magnetic circuit component 3 with an interval, that is, setting two sets of magnetic circuit components, compared with one set of magnetic circuit components, this embodiment is equivalent to having two more sets of magnetic circuit components inside the sound unit 20, that is, increasing the equivalent rear cavity of the sound unit, which is beneficial to improving the low frequency sound quality of the sound unit 20.

[0243] Furthermore, through the cooperation of the first magnetic circuit assembly 2 and the first voice coil 42, and the cooperation of the second magnetic circuit assembly 3 and the second voice coil 43, the two sets of driving mechanisms jointly drive the diaphragm 41 to vibrate. This helps to reduce the deformation of the diaphragm 41 during vibration, improve the stability of the diaphragm 41 vibration, and thus improve the sound quality. In addition, the two sets of driving mechanisms also allow the diaphragm 41 to be set into a long strip shape with a large length-to-width ratio, making the sound unit more adaptable.

[0244] In some embodiments, the sound-generating unit 20 may not include the second magnetic circuit assembly 3 and the second voice coil 43. In this case, the diaphragm 41, support member 6, flexible circuit board 51 and other components of the sound-generating unit 20 can be adjusted accordingly. This embodiment does not impose specific limitations.

[0245] Please refer to Figure 18, which is a structural schematic diagram of the speaker module 300 shown in Figure 3 in some embodiments.

[0246] In some embodiments, in the speaker module 300, the sound-emitting unit 20 may be located in the first mounting slot 101 and fixedly connected to the housing 10.

[0247] For example, the first top plate 8 and the second top plate 9 are exposed in the sound-generating unit 20. The top surface of the housing 10 can be the third surface 106. The first surface 81, the second surface 91 and the third surface 106 can be arranged flush, and the third surface 106 is located around the first surface 81 and the second surface 91.

[0248] The third surface 106 may be the highest surface of the speaker module 300.

[0249] In the thickness direction (i.e., the Z direction) of the speaker module 300, the height of the vibrating part 415 of the diaphragm 41 is lower than the height of the first surface 81 and / or the second surface 91. When the vibrating part 415 vibrates, the highest point of the vibrating part 415 is lower than the height of the first surface 81 and / or the second surface 91.

[0250] In this example, in the height space of the speaker module 300, the first surface 81 and the second surface 91 of the sound-emitting unit 20 extend to the highest point of the speaker module 300, thereby making full use of the height space of the speaker module 300, reducing the influence of the thickness of the sound-emitting unit 20 on the thickness of the speaker module 300, and facilitating the thin design of the speaker module 300.

[0251] For example, the surface of the sound-emitting unit 20 facing away from the first top plate 8 can be flush with the surface of the bottom plate 105 of the housing 10, so that the structure of the speaker module 300 is more regular.

[0252] Please refer to Figures 18 and 19 in conjunction with Figure 19, which is a schematic diagram of the internal structure of the electronic device 1000 shown in Figure 1A in some embodiments.

[0253] In some embodiments, the electronic device 1000 may have a cover plate 400 for mating with the speaker module 300. Exemplarily, the cover plate 400 may be a mid-frame 1001, to which the speaker module 300 may be fixed.

[0254] For example, the first top plate 8, the second top plate 9, and the housing 10 can be fixedly connected to the middle frame 1001 to form the front cavity 3001. The first surface 81, the second surface 91, and the third surface 106 can face the surface of the middle frame 1001, and the bottom plate 105 can face the display screen 200. The space enclosed between the middle frame 1001 and the diaphragm 41, and the space enclosed between the middle frame 1001 and the sound outlet groove 102 of the housing 10, form the front cavity 3001. The front cavity 3001 connects to the external space of the electronic device 1000 through a sound outlet hole to emit sound to the outside of the electronic device 1000. Connecting the first magnetic circuit assembly 2 and the cover plate 400 via the first top plate 8, and connecting the second magnetic circuit assembly 3 and the cover plate 400 via the second top plate 9, allows for flexible adjustment of the thickness, shape, and material of the first top plate 8 and the second top plate 9, enabling better fixed connection with the cover plate 400.

[0255] For example, the electronic device 1000 may also include foam 110, with the first surface 81, the second surface 91, and the third surface 106 sealed to the middle frame 1001 via the foam 110. The foam 110 may serve both sealing and shock absorption functions.

[0256] The height of the speaker module 300 can be less than 3 millimeters. The height space occupied by the speaker module 300 in the electronic device 1000 can be less than 3 millimeters.

[0257] It is understandable that the front cavity 3001, between the middle frame 1001 and the diaphragm 41, is roughly figure-eight shaped.

[0258] In this embodiment, the first top plate 8, the second top plate 9, and the housing 10 are fixedly connected to the middle frame 1001. The first top plate 8 and the second top plate 9 occupy a certain space, so the volume of the enclosed front cavity 3001 is small, which is beneficial to improve the high frequency cutoff frequency of the speaker module 300, thereby improving the high frequency sound quality of the speaker module 300.

[0259] In some other embodiments, when the sound-generating unit 20 does not have a first top plate 8 and a second top plate 9, the front cavity can be formed by a first magnetic circuit assembly 2 and / or a second magnetic circuit assembly 3. For example, the diaphragm 41, the housing 10, the first magnetic circuit assembly 2, and the middle frame 1001 form the front cavity 3001. For example, when the sound-generating unit 20 has a second magnetic circuit assembly 3, the second magnetic circuit assembly 3 is fixedly connected to the same surface of the cover plate 400 as the first magnetic circuit assembly 2.

[0260] In some other embodiments, the cover plate 400 may be the display screen 200, in which case the speaker module 300 may be fixed to the display screen 200. Exemplarily, the diaphragm 41, the first top plate 8, the second top plate 9, and the housing 10 may be positioned facing the display screen 200 and together with the display screen 200 to form a front cavity 3001. This embodiment does not specifically limit this aspect.

[0261] In some other embodiments, the cover plate 400 may be a rear cover 1002 (refer to FIG. 1A), in which case the speaker module 300 may be fixed to the rear cover 1002. Exemplarily, the diaphragm 41, the first top plate 8, the second top plate 9, and the housing 10 may be disposed toward the rear cover 1002 (refer to FIG. 1A) and together with the rear cover 1002 form a front cavity 3001.

[0262] In the electronic device 1000, the gas flow in the front cavity 3001 of the speaker module 300 can be seen from the arrow in Figure 18.

[0263] In this embodiment, the electronic device includes a cover plate and a speaker module. The speaker module includes a housing and a sound-emitting unit. The sound-emitting unit includes a frame, a diaphragm, a first magnetic circuit assembly, and a first voice coil. The first magnetic circuit assembly is fixed to the frame. The diaphragm is arranged around the first magnetic circuit assembly. The inner periphery of the diaphragm is fixedly connected to the first magnetic circuit assembly, and the outer periphery of the diaphragm is fixedly connected to the frame. The first voice coil is located in the first magnetic gap of the first magnetic circuit assembly and is fixedly connected to the vibrating part of the diaphragm.

[0264] The frame is fixed to the housing component, and the housing component and the first magnetic circuit assembly are fixedly connected to the same surface of the cover plate. The cover plate, housing component, diaphragm and first magnetic circuit assembly form the front cavity of the speaker module.

[0265] For example, the cover can be any one of the back cover, the mid-frame, or the display screen. This allows for flexible placement of the speaker module within the electronic device, taking into account available space.

[0266] For example, the inner periphery of the diaphragm may be a second folded ring portion and / or a third folded ring portion, and the outer periphery of the diaphragm may be a mounting portion. The vibrating portion of the diaphragm may be the part of the diaphragm that vibrates under force.

[0267] For example, the front cavity can be connected to the external space of the electronic device to enable sound generation.

[0268] For example, the housing may have a first cavity, which together with the internal space of the sound-emitting unit constitutes the rear cavity of the speaker module. It is understood that the rear cavity and the front cavity may be isolated by a diaphragm.

[0269] In this embodiment, since the diaphragm is arranged around the first magnetic circuit assembly, the diaphragm effectively reuses the height space occupied by the first magnetic circuit assembly, and there is no need to provide additional space for the vibration of the diaphragm. Therefore, the sound-generating unit can be made thinner. Furthermore, the first magnetic circuit assembly directly contacts the cover plate of the electronic device to form the front cavity, and there is no need to set up additional space to form the front cavity. Therefore, the speaker module occupies a thinner space in the electronic device, which is beneficial to the thin design of the electronic device.

[0270] Furthermore, since the first magnetic circuit assembly is also used to form the front cavity, the diaphragm needs to avoid the first magnetic circuit assembly. As a result, the area of ​​the vibrating part of the diaphragm is smaller, and thus the volume of the front cavity is smaller. This is beneficial to improve the high-frequency cutoff frequency of the speaker module, thereby improving the sound quality of the electronic device.

[0271] Furthermore, due to the smaller diaphragm area, the required rear cavity volume of the speaker module is smaller, which helps to reduce the overall size of the speaker module.

[0272] Please refer to Figure 20, which is an exploded structural diagram of the speaker module 300 shown in Figure 1A in some other embodiments. The speaker module 300 shown in the embodiment of Figure 20 includes most of the technical features of the speaker module 300 shown in the embodiment of Figure 3. The technical features that are the same in both will not be described again. The following mainly describes the differences between the two.

[0273] In some embodiments, the speaker module 300 may include a housing 10 and a sound-emitting unit 20, with the sound-emitting unit 20 fixed to the housing 10. The main difference between the speaker module 300 of the embodiment in FIG20 and the speaker module 300 of the embodiment in FIG4 lies in the provision of the first mounting groove 101 in the housing 10.

[0274] For example, the housing component 10 may have a first mounting groove 101, and the bottom wall of the first mounting groove 101 may have a first mating hole 107 and a second mating hole 108. The first mating hole 107 and the second mating hole 108 may be through holes. The shape and size of the first mating hole 107 and the second mating hole 108 may be approximately the same, and both may be approximately rectangular holes. The first mating hole 107 and the second mating hole 108 are spaced apart and arranged side by side.

[0275] The bottom wall of the housing 10 may include a first mating plate 109, a second mating plate 1010, and a third mating plate 1011. The first mating plate 109 is located on the side of the first mating hole 107 away from the second mating hole 108, the second mating plate 1010 is located between the first mating hole 107 and the second mating hole 108, and the third mating plate 1011 is located on the side of the second mating hole 108 away from the first mating hole 107.

[0276] Other structures of the housing 10 can be referred to the relevant description of the embodiment in Figure 4, and will not be repeated in this embodiment.

[0277] Please refer to Figures 21 and 22. Figure 21 is an exploded structural diagram of the sound-generating unit 20 shown in Figure 20 in some embodiments, and Figure 22 is an exploded structural diagram of the frame 1 shown in Figure 21. The sound-generating unit 20 shown in the embodiment of Figure 21 includes most of the technical features of the sound-generating unit 20 shown in the embodiment of Figure 7. The technical features that are the same in both will not be described again. The following mainly describes the differences between the two.

[0278] In some embodiments, the frame 1 of the sound-generating unit 20 may include a frame 11, a first plate 12, and a second plate 13. The main difference between the sound-generating unit 20 of the embodiment in FIG19 and the sound-generating unit 20 of the embodiment in FIG6 lies in the structure of the frame 11.

[0279] For example, the frame 11 can be a generally rectangular frame structure. The frame 11 can have a first fixing groove 114 and a second fixing groove 115. The first fixing groove 114 and the second fixing groove 115 can have the same shape, and the first fixing groove 114 and the second fixing groove 115 can be arranged side by side and spaced apart.

[0280] For example, the frame 11 may also have a first docking groove 116, a second docking groove 117, and a third docking groove 118. The first docking groove 116 may be located on the side of the first fixing groove 114 away from the second fixing groove 115, the second docking groove 117 may be located between the first fixing groove 114 and the second fixing groove 115, and the third docking groove 118 may be located on the side of the second fixing groove 115 away from the first fixing groove 114.

[0281] For example, the frame 11 may also have a first opening groove 119 and a second opening groove 1110. The first opening groove 119 may be located on the side of the first mating groove 116 away from the third mating groove 118. The first opening groove 119 and the first mating groove 116 may form a stepped groove. The second opening groove 1110 may be located on the side of the third mating groove 118 away from the first mating groove 116. The second opening groove 1110 and the third mating groove 118 may form a stepped groove. For example, the first opening groove 119 and the second opening groove 1110 are located at opposite ends of the length of the frame 11.

[0282] For example, the frame 11 can be a rectangular frame structure formed by connecting four side strips in sequence. A third opening 1111 can be formed on the bottom side of the frame 11. The first mating groove 116, the second mating groove 117, the third mating groove 118, the first opening groove 119, and the second opening groove 1110 can be located at the third opening 1111.

[0283] For example, the first plate 12 can be installed in the first fixing groove 114, and the second plate 13 can be installed in the second fixing groove 115. In this case, the first plate 12 and the second plate 13 respectively partially cover the third opening 1111, effectively sealing the third opening 1111. The gap between the frame, the first plate, and the second plate forms a vent 202. It is understood that the first mating groove 116 and the first opening groove 119 each form a vent 202, the second mating groove 117 each forms a vent 202, and the third mating groove 118 and the second opening groove 1110 each form a vent 202.

[0284] It is understood that the sound-generating unit 20 may further include a first magnetic circuit assembly 2, a second magnetic circuit assembly 3, a vibration assembly 4, a circuit board assembly 5, a support member 6, an annular member 7, a first top plate 8, and a second top plate 9. The specific structures of the above components can be referred to the relevant descriptions in the embodiments shown in Figures 6 to 19, and will not be repeated in this embodiment.

[0285] In this embodiment, the first plate 12 and the second plate 13 are used to form the base plate of the basket frame 1. The basket frame 1 is equivalent to a split configuration, which is easy to manufacture. Furthermore, the first plate 12, the second plate 13, and the frame 11 are used to form a vent 202 on the bottom side of the sound unit 20. Since the bottom area of ​​the sound unit is large, the area of ​​the vent 202 can be set to be large, so that the sound unit 20 can have a large air volume in the vent 202, which is beneficial to improve the loudness of the sound unit 20 at low frequencies, thereby improving the low-frequency sound quality.

[0286] In some embodiments, in the speaker module 300, the sound-emitting unit 20 can be fixed in the first mounting groove 101 and fixedly connected to the housing 10.

[0287] For example, the first docking groove 116 docks with the first docking plate 109 and the two can be sealed together; the second docking groove 117 and the second docking plate 1010 can dock together and the two can be sealed together; and the third docking groove 118 and the third docking plate 1011 can dock together and the two can be sealed together.

[0288] The first opening slot 119 connects the internal space and the external space of the sound-generating unit 20, that is, the first opening slot 119 connects the first cavity 104a and the second cavity 201, and seals the connection between the first cavity 104a and the second cavity 201; the second docking slot 117 and the second docking plate 1010 form an opening connecting the internal space and the external space of the sound-generating unit 20, so that the first cavity 104a and the second cavity 201 are connected; the second opening slot 1110 connects the internal space and the external space of the sound-generating unit 20, that is, the first opening slot 119 connects the first cavity 104a and the second cavity 201, and seals the connection between the first cavity 104a and the second cavity 201.

[0289] Therefore, the second cavity 201 of the sound-emitting unit 20 is connected to the first cavity 104a of the housing 10 through the middle and both ends of the sound-emitting unit 20. The connection channel between the first cavity 104a and the second cavity 201 has a large cross-sectional area and smooth airflow.

[0290] In addition, since the housing 10 is connected to the frame 1 of the sound unit 20, the area of ​​the first plate 12 and the second plate 13 can be smaller. When the first plate 12 and the second plate 13 are made of magnetic materials, the weight of the first plate 12 and the second plate 13 is lower, which is beneficial to the lightweight design of the speaker module 300.

[0291] Please refer to Figures 21 and 23. Figure 23 is a cross-sectional view of the speaker module 300 shown in Figure 20.

[0292] In some embodiments, in the speaker module 300, the sound-emitting unit 20 may be located in the first mounting slot 101 and fixedly connected to the housing 10.

[0293] For example, the first docking plate 109 can dock with the first docking groove 116, the second docking plate 1010 can dock with the second docking groove 117, and the third docking plate 1011 can dock with the third docking groove 118, thereby sealing the bottom of the sound-emitting unit 20 with the housing 10. The first opening groove 119, the second docking groove 117, and the second opening groove 1110 are not blocked, allowing the sound-emitting unit 20 to communicate with the first cavity of the housing through these three openings, forming the rear cavity of the speaker module 300.

[0294] In this embodiment, the housing 10 is mated with the sound-generating unit 20, fixing the sound-generating unit 20 and forming the rear cavity of the speaker module 300. The second mating plate 1010 is used to seal the bottom side of the sound-generating unit 20 and also to support the housing 10 itself to improve the strength of the speaker module 300.

[0295] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0296] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0297] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device (1000), characterized by, Includes cover plate (400) and speaker module (300), The loudspeaker module (300) includes a housing (10) and a sound-generating unit (20). The sound-generating unit (20) includes a frame (1), a diaphragm (41), a first magnetic circuit assembly (2), and a first voice coil (42). The first magnetic circuit assembly (2) is fixed to the frame (1). The diaphragm (41) is arranged around the first magnetic circuit assembly (2). The inner periphery of the diaphragm (41) is fixedly connected to the first magnetic circuit assembly (2), and the outer periphery of the diaphragm (41) is fixedly connected to the frame (1). The first voice coil (42) is located at the first magnetic gap (2a) of the first magnetic circuit assembly (2) and is fixedly connected to the vibrating part (415) of the diaphragm (41). The basket (1) is fixed to the housing (10), the housing (10) and the first magnetic circuit assembly (2) are fixedly connected to the same surface of the cover plate (400), and the cover plate (400), the housing (10), the diaphragm (41) and the first magnetic circuit assembly (2) form the front cavity (3001) of the speaker module (300).

2. The electronic device (1000) according to claim 1, characterized by, The cover plate (400) is any one of the rear cover (1002), the middle frame (1001), and the display screen (200).

3. The electronic device (1000) according to claim 1 or 2, characterized in that, The sound-generating unit (20) further includes a first top plate (8), which is fixedly connected to the first magnetic circuit assembly (2) and the cover plate (400).

4. The electronic device (1000) according to claim 3, characterized in that, The first top plate (8) is made of magnetic material.

5. The electronic device (1000) according to any one of claims 1 to 4, characterized in that, The first top plate (8) has a first surface (81) that is away from the first magnetic circuit assembly (2), and the top surface of the housing (10) is a third surface (106) that is flush with the first surface (81).

6. The electronic device (1000) according to claim 5, characterized in that, The vibrating part (415) of the diaphragm (41) is recessed relative to the first surface (81).

7. The electronic device (1000) according to any one of claims 1 to 6, characterized in that, The speaker module (300) further includes a first ring (71), which is made of metal. The first ring (71) is located between the inner edge of the diaphragm (41) and the first magnetic circuit assembly (2), and is fixedly connected to the inner edge of the diaphragm (41) and the first magnetic circuit assembly (2).

8. The electronic device (1000) according to any one of claims 1 to 7, characterized in that, The first magnetic circuit assembly (2) includes a first magnet layer (23), a first washer layer (24) and a second magnet layer (25), which are stacked sequentially along the vibration direction of the first voice coil (42).

9. The electronic device (1000) according to any one of claims 1 to 8, characterized in that, The first magnetic circuit assembly (2) includes a first central magnetic element (21) and a first side magnetic element (22), and a first magnetic gap (2a) is formed between the first central magnetic element (21) and the first side magnetic element (22); the first central magnetic element (21) includes a first central magnet (211), a first central washer (212) and a second central magnet (213), the first central magnet (211), the first central washer (212) and the second central magnet (213) are arranged along the vibration direction of the first voice coil (42), the first voice coil (42) surrounds the first central washer (212) and is disposed opposite to the first central washer (212), and the thickness of the first central washer (212) is greater than or equal to the thickness of the first voice coil (42).

10. The electronic device (1000) according to claim 9, characterized in that, The first central magnet (211), the first central washer (212), and the second central magnet (213) are respectively provided with through holes in their middle portions. The area of ​​the through hole (2121) of the first central washer (212) is larger than the area of ​​the through hole (2111) of the first central magnet (211) and the area of ​​the through hole (2131) of the second central magnet (213).

11. The electronic device (1000) according to any one of claims 1 to 8, characterized in that, The first magnetic circuit assembly (2) includes a first central magnetic element (21) and a first side magnetic element (22), and the first magnetic gap (2a) is formed between the first central magnetic element (21) and the first side magnetic element (22); The first side magnetic element (22) includes a first side magnetic part (221) and a second side magnetic part (222). The first central magnetic element (21) is located between the first side magnetic part (221) and the second side magnetic part (222). In the arrangement direction of the first side magnetic part (221) and the second side magnetic part (222), the distance between the end of the first side magnetic part (221) and the end of the second side magnetic part (222) is less than the width of the first central magnetic element (21).

12. The electronic device (1000) according to any one of claims 1 to 11, characterized in that, The sound-generating unit (20) also includes a second magnetic circuit assembly (3) and a second voice coil (43); The second magnetic circuit assembly (3) is fixed to the frame (1), the diaphragm (41) is arranged around the second magnetic circuit assembly (3), the inner periphery of the diaphragm (41) is fixedly connected to the second magnetic circuit assembly (3), the outer periphery of the diaphragm (41) is fixedly connected to the frame (1), the second voice coil (43) is located at the second magnetic gap (3a) of the second magnetic circuit assembly (3), and is fixedly connected to the vibrating part (415) of the diaphragm (41); The second magnetic circuit assembly (3) is fixedly connected to the same surface of the cover plate (400) as the first magnetic circuit assembly (2), and the second magnetic circuit assembly (3) is used to form the front cavity (3001) of the speaker module (300).

13. The electronic device (1000) according to claim 12, characterized in that, The diaphragm (41) includes a mounting portion (413), a first folded ring portion (414), a vibrating portion (415), a second folded ring portion (416), and a third folded ring portion (417); The first folded ring portion (414) is fixedly connected to the mounting portion (413) and the vibration portion (415), and the second folded ring portion (416) and the third folded ring portion (417) are fixed to the vibration portion (415) at intervals; The mounting part (413) is fixedly connected to the basin frame (1), the second folding ring part (416) is fixedly connected to the first magnetic circuit assembly (2), and the third folding ring part (417) is fixedly connected to the second magnetic circuit assembly (3).

14. The electronic device (1000) according to claim 13, characterized in that, The diaphragm (41) is a one-piece molded structural component.

15. The electronic device (1000) according to any one of claims 12 to 14, characterized in that, The speaker module (300) further includes a support member (6), which includes a support frame (63), a first support portion (64), a second support portion (65), a first bending portion (66), and a second bending portion (67). The first support portion (64) and the second support portion (65) are fixed to the support frame (63) at intervals. The first bending portion (66) and the second bending portion (67) are respectively fixed to opposite sides of the support frame (63). The arrangement direction of the first bending portion (66) and the second bending portion (67) is perpendicular to the arrangement direction of the first support portion (64) and the second support portion (65). The first bending portion (66) and the second bending portion (67) extend along the arrangement direction of the first support portion (64) and the second support portion (65) and protrude from one side of the support frame (63). The support frame (63) is fixed to the vibrating part (415) of the diaphragm (41), the first support part (64) is fixedly connected to the first voice coil (42), and the second support part (65) is fixedly connected to the second voice coil (43).

16. The electronic device (1000) according to any one of claims 12 to 15, characterized in that, The speaker module (300) further includes a flexible circuit board (51), which includes an outer ring portion (511), a first deformable portion (512), a first fixed portion (513), a second deformable portion (514), and a second fixed portion (515). The first deformable portion (512) is fixedly connected to the outer ring portion (511) and the first fixed portion (513), and the second deformable portion (514) is fixedly connected to the outer ring portion (511) and the second fixed portion (515). The outer ring (511) is fixed to the frame (1), the first fixing part (513) is fixedly connected to the first voice coil (42), and the second fixing part (515) is fixedly connected to the second voice coil (43).

17. The electronic device (1000) according to claim 16, characterized in that, The speaker module (300) also includes a first reinforcing member (52) and a second reinforcing member (53); The first reinforcing member (52) includes a first end (521), a connecting portion (522), and a second end (523). The connecting portion (522) of the first reinforcing member (52) connects the first end (521) and the second end (523). The first end (521) of the first reinforcing member (52) is fixedly connected to the outer ring portion (511), and the second end (523) of the first reinforcing member (52) is fixedly connected to the first fixing portion (513). The second reinforcing member (53) includes a first end (531), a connecting portion (532), and a second end (533). The connecting portion (532) of the second reinforcing member (53) connects the first end (531) and the second end (533). The first end (531) of the second reinforcing member (53) is fixedly connected to the outer ring portion (511), and the second end (533) of the second reinforcing member (53) is fixedly connected to the second fixing portion (515).

18. The electronic device (1000) according to any one of claims 12 to 17, characterized in that, The basin stand (1) includes a frame (11), a first plate (12), and a second plate (13); The side wall of the frame (11) is provided with a ventilation hole (202); the bottom wall of the frame (11) has a first opening (111) and a second opening (112), the first opening (111) and the second opening (112) are spaced apart, the first plate (12) is fixed and sealed to the frame (11) and covers the first opening (111), and the second plate (13) is fixed and sealed to the frame (11) and covers the second opening (112).

19. The electronic device (1000) according to any one of claims 12 to 17, characterized in that, The basin stand (1) includes a frame (11), a first plate (12), and a second plate (13); The bottom wall of the frame (11) has a third opening (1111), the first plate (12) and the second plate (13) are fixed to the frame (11) at intervals and respectively partially cover the third opening (1111), and the interval between the frame (11), the first plate (12) and the second plate (13) forms a vent (202).

20. The electronic device (1000) according to claim 18 or 19, characterized in that, The first magnetic circuit assembly (2) is fixed to the first plate (12), and the second magnetic circuit assembly (3) is fixed to the second plate (13). The materials of the first plate (12) and the second plate (13) are magnetically conductive materials.

21. A sound-generating unit (20), characterized in that, It includes a frame (1), a diaphragm (41), a first magnetic circuit assembly (2), a second magnetic circuit assembly (3), a first voice coil (42), and a second voice coil (43); The first magnetic circuit assembly (2) is fixed to the frame (1), the diaphragm (41) is arranged around the first magnetic circuit assembly (2), the inner periphery of the diaphragm (41) is fixedly connected to the first magnetic circuit assembly (2), the outer periphery of the diaphragm (41) is fixedly connected to the frame (1), the first voice coil (42) is located at the first magnetic gap (2a) of the first magnetic circuit assembly (2) and is fixedly connected to the vibrating part (415) of the diaphragm (41); The second magnetic circuit assembly (3) is fixed to the frame (1), the diaphragm (41) is arranged around the second magnetic circuit assembly (3), the inner periphery of the diaphragm (41) is fixedly connected to the second magnetic circuit assembly (3), the outer periphery of the diaphragm (41) is fixedly connected to the frame (1), the second voice coil (43) is located at the second magnetic gap (3a) of the second magnetic circuit assembly (3) and is fixedly connected to the vibrating part (415) of the diaphragm (41).

22. The sound-generating unit (20) according to claim 21, characterized in that, The first magnetic circuit assembly (2) includes a first central magnetic element (21) and a first side magnetic element (22), and a first magnetic gap (2a) is formed between the first central magnetic element (21) and the first side magnetic element (22); the first central magnetic element (21) includes a first central magnet (211), a first central washer (212) and a second central magnet (213), the first central magnet (211), the first central washer (212) and the second central magnet (213) are arranged along the vibration direction of the first voice coil (42), the first voice coil (42) surrounds the first central washer (212) and is disposed opposite to the first central washer (212), and the thickness of the first central washer (212) is greater than or equal to the thickness of the first voice coil (42).

23. The sound-generating unit (20) according to claim 21 or 22, characterized in that, The speaker module (300) further includes a support member (6), which includes a support frame (63), a first support portion (64), a second support portion (65), a first bending portion (66), and a second bending portion (67). The first support portion (64) and the second support portion (65) are fixed to the support frame (63) at intervals. The first bending portion (66) and the second bending portion (67) are respectively fixed to opposite sides of the support frame (63). The arrangement direction of the first bending portion (66) and the second bending portion (67) is perpendicular to the arrangement direction of the first support portion (64) and the second support portion (65). The first bending portion (66) and the second bending portion (67) extend along the arrangement direction of the first support portion (64) and the second support portion (65) and protrude from one side of the support frame (63). The support frame (63) is fixed to the vibrating part (415) of the diaphragm (41), the first support part (64) is fixedly connected to the first voice coil (42), and the second support part (65) is fixedly connected to the second voice coil (43).

24. The sound-generating unit (20) according to any one of claims 21 to 23, characterized in that, The diaphragm (41) includes a mounting portion (413), a first folded ring portion (414), a vibrating portion (415), a second folded ring portion (416), and a third folded ring portion (417); The first folded ring portion (414) is fixedly connected to the mounting portion (413) and the vibration portion (415), and the second folded ring portion (416) and the third folded ring portion (417) are fixed to the vibration portion (415) at intervals; The mounting part (413) is fixedly connected to the basin frame (1), the second folding ring part (416) is fixedly connected to the first magnetic circuit assembly (2), and the third folding ring part (417) is fixedly connected to the second magnetic circuit assembly (3).

25. The sound-generating unit (20) according to claim 24, characterized in that, The diaphragm (41) is a one-piece molded structural component.

26. A loudspeaker module (300), characterized in that, It includes a housing (10) and a sound-generating unit (20) as claimed in any one of claims 21 to 25, the sound-generating unit (20) being fixed to the housing (10).

27. The speaker module (300) according to claim 26, characterized in that, The sound-generating unit (20) further includes a first top plate (8) and a second top plate. The first top plate (8) is fixed to the top side of the first magnetic circuit assembly (2). The first top plate (8) has a first surface (81) facing away from the first magnetic circuit assembly (2). The second top plate is fixed to the top side of the second magnetic circuit assembly (3). The second top plate has a second surface facing away from the first magnetic circuit assembly. The top surface of the housing component (10) is the third surface (106), and the first surface (81), the second surface and the third surface (106) are flush.

Images