Loudspeaker module and electronic device

Abstract

Provided in the present application are a loudspeaker module and an electronic device. The loudspeaker module comprises a magnetic circuit unit, a loudspeaker unit, a motor unit and a housing, wherein the loudspeaker unit, the magnetic circuit unit and the motor unit are arranged in sequence. The motor unit comprises a counterweight block, a first coil, an elastic member and a first magnetic component, wherein the counterweight block is spaced apart from the magnetic circuit unit, the elastic member is connected between the counterweight block and the housing, the first magnetic component is fixedly connected in the housing, the first coil is fixedly connected to the counterweight block, is located in the magnetic fields of the magnetic circuit unit and the first magnetic component, and is configured to drive the counterweight block to move when energized. The loudspeaker module according to the embodiments of the present application can provide better vibrotactile experience.

Description

Speaker modules and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202422532844.2, filed on October 18, 2024, entitled "Speaker Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electroacoustic conversion technology, and in particular to a loudspeaker module and electronic device. Background Technology

[0003] Electronic devices such as smartphones and smartwatches typically include speakers and motors. The speaker provides the audio experience, while the motor provides the tactile vibration experience, enabling vibration alerts. As electronic devices become increasingly miniaturized, current technology often integrates the speaker and motor into a single design, forming a speaker module, to save space. However, speaker modules suffer from issues such as insufficient motor driving force and weaker vibration feedback. Summary of the Invention

[0004] This application provides a speaker module and an electronic device. The motor inside the speaker module has a strong vibration, which can provide the electronic device with a better tactile vibration experience.

[0005] In a first aspect, embodiments of this application provide a speaker module. The speaker module includes a magnetic circuit unit, a speaker unit, a motor unit, and a housing, wherein the speaker unit, the magnetic circuit unit, and the motor unit are arranged sequentially. The motor unit includes a counterweight, a first coil, an elastic element, and a first magnetic component. The counterweight is spaced apart from the magnetic circuit unit, the elastic element is connected between the counterweight and the housing, the first magnetic component is fixedly connected inside the housing, and the first coil is fixedly connected to the counterweight. The first coil is located in the magnetic field of the magnetic circuit unit and the first magnetic component, and the first coil is used to drive the counterweight to move when energized.

[0006] This embodiment of the application, by setting a first magnetic component, can effectively concentrate the magnetic field lines of the magnetic circuit unit near the first coil, effectively increasing the magnetic field strength at the location of the first coil, increasing the magnetic force experienced by the first coil during movement, thus increasing the force on the counterweight, improving the vibration effect of the motor unit, and enhancing the vibration feel of the first housing. Furthermore, the first magnetic component is fixedly connected inside the first housing; during the movement of the counterweight, the first magnetic component will not move with the counterweight. The first magnetic component and the magnetic circuit unit can form a magnetic field with a relatively stable distribution of magnetic field lines, which is beneficial to improving the stability of the first coil's reciprocating motion within the magnetic field of the first magnetic component and the magnetic circuit unit.

[0007] In one possible implementation, the first magnetic component is located on the side of the counterweight away from the magnetic circuit unit. By positioning the first magnetic component on the side of the counterweight away from the magnetic circuit unit, it is beneficial to increase the magnetic field strength in the area where the first coil is located, allowing the first coil to be located in a magnetic field with a stronger magnetic field strength. This helps to increase the magnetic force experienced by the first coil, thereby effectively improving the vibration effect of the motor unit.

[0008] In one possible implementation, the first magnetic component and the counterweight are spaced apart. In other words, the gap between the first magnetic component and the counterweight helps to avoid the influence of friction on the movement speed of the counterweight when it interferes with the first magnetic component during movement, thus ensuring the vibration effect of the motor unit.

[0009] In one possible implementation, the counterweight includes a recess, with at least a portion of the first magnetic component located within the recess. The partial or complete placement of the first magnetic component within the recess reduces the size of the speaker module in the direction of the magnetic circuit unit and motor unit arrangement, facilitating speaker module miniaturization. It also increases the compactness of the arrangement of the first magnetic component and magnetic circuit unit, thereby increasing the strength of the magnetic field around the first coil, enhancing the magnetic force on the first coil, and consequently increasing the driving force on the counterweight, thus strengthening the vibration effect of the motor unit.

[0010] In one possible implementation, the first coil is located on the side of the counterweight closer to the magnetic circuit unit, with at least a portion of the first coil embedded in the counterweight. By embedding a portion or all of the first coil into the mounting slot, the contact area between the first coil and the counterweight can be increased, which is beneficial for improving the reliability of the connection between the first coil and the counterweight. Furthermore, embedding at least a portion of the first coil into the counterweight reduces the space occupied by the first coil and the counterweight in the speaker module, enabling miniaturization of the speaker module. It also helps to improve the compactness of the arrangement of the first coil, the magnetic circuit unit, and the first magnetic components, increases the magnetic field strength in the area where the first coil is located, and improves the vibration effect of the motor unit.

[0011] In one possible implementation, the surface of the first coil is flush with the surface of the counterweight, which can effectively reduce the space occupied by the first coil and the counterweight in the speaker module, which is conducive to the miniaturization of the speaker module, and also helps to improve the compactness of the arrangement of the first coil, magnetic circuit unit and first magnetic component, thereby improving the vibration effect of the motor unit.

[0012] In one possible implementation, the first magnetic component includes a first sub-magnetic component and a second sub-magnetic component. The first and second sub-magnetic components are arranged in a direction perpendicular to the magnetic circuit unit and the motor unit, and the arrangement direction of the magnetic poles of the first sub-magnetic component is perpendicular to the arrangement direction of the magnetic poles of the second sub-magnetic component. By setting the first and second sub-magnetic components, the magnetic field lines around the first coil can be effectively concentrated, effectively increasing the magnetic field strength at the location of the first coil and increasing the magnitude of the magnetic force on the first coil, thereby effectively improving the vibration effect of the motor unit.

[0013] In one possible implementation, the first magnetic component includes a third sub-magnetic component, which is located on opposite sides of the second sub-magnetic component. The magnetic poles of the third sub-magnetic component are arranged in the opposite direction to those of the second sub-magnetic component. By providing the third sub-magnetic component, the magnetic field lines around the first coil can be effectively concentrated, effectively increasing the magnetic field strength in the area where the first coil is located, and improving the magnetic force on the first coil, thereby effectively improving the vibration effect of the motor unit.

[0014] In one possible implementation, the motor unit includes a second magnetic component fixedly connected within the housing. The second magnetic component is positioned at one end of the counterweight, and the first magnetic component is positioned at the other end. The second and first magnetic components are symmetrically arranged about an axis of symmetry passing through the center of the counterweight and perpendicular to the plane containing the counterweight. The second magnetic component corresponds to the second coil. By providing the second magnetic component, the magnetic field lines of the magnetic circuit unit near the second coil can be effectively concentrated, effectively increasing the magnetic field strength in the area where the second coil is located, increasing the magnetic force experienced by the second coil during movement, improving the vibration effect of the motor unit, and enhancing the vibration of the first housing. The symmetrical arrangement of the second and first magnetic components about the axis of symmetry effectively improves the symmetry of the reciprocating motion of the counterweight.

[0015] In one possible implementation, the motor unit includes a third magnetic component fixedly connected within the housing. The third magnetic component is spaced apart from and correspondingly positioned at the same end of the counterweight as the first magnetic component. The magnetic circuit unit includes a fourth and a fifth magnetic component spaced apart, with the first and fifth magnetic components corresponding to each other, and the third and fourth magnetic components corresponding to each other. The inclusion of the third magnetic component increases the magnetic force on the first coil, thereby effectively enhancing the vibration effect of the motor unit.

[0016] In one possible implementation, the speaker module includes a first electrode plate and a second electrode plate, the first electrode plate being fixed to the counterweight and the second electrode plate being fixed to the housing.

[0017] By setting a first electrode plate and a second electrode plate, with the first electrode plate set on the counterweight and the second electrode plate set on the first housing, the distance between the first and second electrode plates changes as the counterweight moves, which in turn causes a change in capacitance. This allows the amplitude of the counterweight to be measured, and the input signal (alternating current) of the first coil can be adjusted according to the amplitude. This avoids problems such as excessive driving force on the first coil due to excessive alternating current, which could cause the counterweight to collide with the first housing. It also avoids problems such as insufficient driving force on the first coil, which could lead to insufficient vibration of the motor.

[0018] In one possible implementation, the loudspeaker unit includes a diaphragm and a sixth magnetic component, the sixth magnetic component being located between the magnetic circuit unit and the diaphragm. The loudspeaker unit may also include a third coil, one end of which is connected to the diaphragm, and the other end of which is located in the magnetic field of the magnetic circuit unit. The third coil is used to drive the diaphragm to move. The sixth magnetic component is made of a magnetic material and can, while providing structural support for the loudspeaker unit, concentrate the magnetic field lines of the magnetic circuit unit near the third coil, effectively increasing the magnetic field strength at the location of the third coil and increasing the magnetic force of the third coil during movement, thus increasing the amplitude of the diaphragm.

[0019] Secondly, this application provides an electronic device, including a housing and a speaker module as described in any of the foregoing embodiments, wherein the speaker module is located within the housing.

[0020] In one possible implementation, the electronic device includes a detection unit, and the motor unit includes a second coil, which is spaced apart from the first coil. When the first coil and the second coil are energized, the detection unit detects the driving force received by the first coil and the second coil. By detecting changes in the driving force (i.e., the magnetic force in the magnetic field) received by the first coil and the second coil, the input signal (alternating current) of the first coil and / or the second coil can be adjusted. This avoids problems such as excessive driving force on the first coil and / or the second coil due to excessive alternating current, which could cause the counterweight to collide with the first housing. It also avoids problems such as insufficient driving force on the first coil, which could lead to insufficient vibration of the motor. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0022] Figure 2 is a structural schematic diagram of a speaker module provided in an embodiment of this application;

[0023] Figure 3 is a simulation diagram of the magnetic induction intensity of a part of the speaker module shown in Figure 2;

[0024] Figure 4 is a schematic diagram showing the relationship between the amplitude of the first coil of the loudspeaker module shown in Figure 2 and the power conversion factor;

[0025] Figure 5 is a three-dimensional schematic diagram of a portion of the speaker module shown in Figure 2 in some embodiments;

[0026] Figure 6 is an exploded structural diagram of the speaker module shown in Figure 5;

[0027] Figure 7 is a structural schematic diagram of part of the structure shown in Figure 6 from another perspective;

[0028] Figure 8 is a structural schematic diagram of another speaker module provided in an embodiment of this application;

[0029] Figure 9 is a schematic diagram of the magnetic induction intensity of the speaker module shown in Figure 8;

[0030] Figure 10 is a schematic diagram showing the relationship between the amplitude of the first coil shown in Figure 8 and the power conversion factor;

[0031] Figure 11 is a schematic diagram of the structure of the capacitor formed by the first electrode sheet and the second electrode sheet according to an embodiment of this application;

[0032] Figure 12 is a schematic diagram showing the relationship between the amplitude of the first coil and the second coil and the power conversion factor provided in the embodiments of this application. Detailed Implementation

[0033] The embodiments of this application are described below with reference to the accompanying drawings.

[0034] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Multiple" refers to at least two.

[0035] The directional terms mentioned in the embodiments of this application, such as "upper", "inner", "outer", "side", etc., are only for reference to the direction of 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.

[0036] In the embodiments of this application, the relative positional relationships mentioned, such as parallel, perpendicular, and flush, are all limitations relative to the current technological level, not absolute and strict limitations. Slight deviations are allowed, and approximations of parallel, perpendicular, or flush are all acceptable. For example, A and B being parallel means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0037] In the embodiments of this application, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0038] Please refer to Figure 1, which is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of this application. The electronic device 1000 can be a mobile phone, tablet computer, or smartwatch, or other products with sound-emitting function. In this embodiment, the electronic device 1000 is described as a mobile phone. In other embodiments, other types of electronic devices 1000 can also adopt a similar structure, which will not be described in detail below.

[0039] Electronic device 1000 may include a housing 100 and a speaker module 200. The housing 100 may include a frame 11 and a back cover 12. The back cover 12 is fixed to the frame 11. Exemplarily, the back cover 12 may be fixedly connected to the frame 11 by means of adhesive or snap-fit. The back cover 12 and the frame 11 may also be integrally formed, that is, the back cover 12 and the frame 11 are a single structure.

[0040] The electronic device 1000 may include a display screen (not shown in Figure 1), which may be fixed to the side of the frame 11 away from the back cover 12. In this case, the display screen and the back cover 12 may be located on opposite sides of the frame 11. The display screen, frame 11, and back cover 12 together enclose the internal space of the electronic device 1000. The internal space of the electronic device 1000 can be used to house other structural components within the electronic device 1000, such as the speaker module 200, battery 400, etc.

[0041] The electronic device 1000 may include a circuit board 600 and a detection unit 300. The detection unit 300 is fixed to the circuit board 600 and can be electrically connected to the circuit board 600. The detection unit 300 can be a detection chip. The detection unit 300 can be electrically connected to the speaker module 200.

[0042] The electronic device 1000 may also include a battery 400, which is located inside the electronic device 1000 and is used to power the electronic device 1000. The battery 400 is generally large in size and occupies a large amount of internal space in the electronic device 1000. The battery 400 can be a rectangle as shown in Figure 1, or it can be circular, square, or an irregular shape. The embodiments of this application do not specifically limit the shape and position of the battery 400.

[0043] The electronic device 1000 may also include a camera 500, which can be used to capture pictures or videos to meet the shooting needs of the electronic device 1000. In addition, the electronic device 1000 may also be provided with other structural components such as a power button, volume buttons, and a headphone jack, but this application embodiment does not limit this.

[0044] The shapes, positions, and dimensions of the housing 100, speaker module 200, detection unit 300, battery 400, camera 500, and circuit board 600 shown in Figure 1 are merely schematic representations and can be adjusted as needed. Furthermore, Figure 1 is only a schematic diagram of the structure of an electronic device 1000, and the embodiments of this application do not limit the structure of the electronic device 1000.

[0045] Please refer to Figures 2, 3, and 4. Figure 2 is a structural schematic diagram of a loudspeaker module 200 provided in an embodiment of this application. Figure 3 is a simulation schematic diagram of the magnetic induction intensity of a portion of the loudspeaker module 200 shown in Figure 2. Figure 4 is a schematic diagram showing the relationship between the amplitude of the first coil 212 of the loudspeaker module 200 shown in Figure 2 and the power conversion factor. It is understood that, for ease of description, the loudspeaker module 200 shown in Figure 2 is defined to have a first direction Z and a second direction X, wherein the second direction X is perpendicular to the first direction Z. The first direction Z may be parallel to the height direction of the loudspeaker module 200.

[0046] The speaker module 200 may include a motor unit 21, a magnetic circuit unit 22, a speaker unit 23, and a housing 24 (the housing 24 is referred to as the first housing 24 to distinguish it from the second housing mentioned later). The speaker unit 23, the magnetic circuit unit 22, and the motor unit 21 may be arranged sequentially. For example, the speaker unit 23, the magnetic circuit unit 22, and the motor unit 21 may be arranged sequentially along a first direction Z. The magnetic circuit unit 22 is used to generate a magnetic field, the speaker unit 23 is used to vibrate and produce sound, providing an audio experience for the electronic device 1000, and the motor unit 21 may be installed in the first housing 24. The motor unit 21 is used to provide a tactile vibration experience to achieve a vibration reminder function.

[0047] The first housing 24 may include a first sidewall 241, a second sidewall 242, and a bottom wall 243. The first sidewall 241 and the second sidewall 242 are arranged along a second direction X, and the plane containing the bottom wall 243 is perpendicular to the first direction Z. The motor unit 21 may be housed within the space enclosed by the first sidewall 241, the second sidewall 242, and the bottom wall 243.

[0048] The motor unit 21 may include a counterweight 211, a first coil 212, an elastic element 213, and a first magnetic component 214. The counterweight 211 and the magnetic circuit unit 22 may be spaced apart along the first direction Z to avoid interference between the counterweight 211 and the magnetic circuit unit 22 when the counterweight 211 moves. The elastic element 213 is connected between the counterweight 211 and the first housing 24. Understandably, one end of the elastic element 213 is fixedly connected to the first housing 24, and the other end of the elastic element 213 is fixedly connected to the counterweight 211. The elastic element 213 can deform, and the counterweight 211 can move within the first housing 24. In other words, the position of the counterweight 211 within the first housing 24 will change. The counterweight 211 may be a structural component with a certain weight, such as a tungsten steel block, and the elastic element 213 may be a structural component capable of elastic deformation, such as a spring or leaf spring. In this embodiment, the material, shape, and size of the elastic element 213 and the counterweight 211 are not limited.

[0049] The first magnetic component 214 is fixedly connected within the first housing 24. Understandably, the first magnetic component 214 can be fixed to the inner surface of the first housing 24 (e.g., the inner surface of the first sidewall 241, the second sidewall 242, or the bottom wall 243), or it can be fixed to other structural components within the first housing 24. The fixed connection of the first magnetic component 214 within the first housing 24 means that the first magnetic component 214 does not move relative to the first housing 24, and its position relative to the first housing 24 is fixed. The first magnetic component 214 can be fixed within the first housing 24 by adhesive bonding or embedding.

[0050] The first coil 212 is fixedly connected to the counterweight 211. The first coil 212 is located in the magnetic field of the magnetic circuit unit 22 and the first magnetic component 214. The first coil 212 is used to drive the counterweight 211 to move when energized. The first coil 212 can be fixed to the counterweight 211 by means of adhesive or embedding.

[0051] Understandably, after an alternating current is passed through the first coil 212, the first coil 212 will drive the counterweight 211 to move under the action of the magnetic field of the magnetic circuit unit 22 and the first magnetic component 214. During the movement of the counterweight 211, the elastic element 213 will undergo elastic deformation. As a result, the first coil 212 and the counterweight 211 will reciprocate along the second direction X under the action of the elastic force of the elastic element 213 and the force on the first coil 212 in the magnetic field of the magnetic circuit unit 22 and the first magnetic component 214, thereby driving the vibration of the first housing 24, thus generating a vibration sensation and realizing the vibration effect of the motor unit 21.

[0052] It is understood that in this embodiment, the first housing 24 can be fixedly connected to the outer casing 100 of the electronic device 1000 (as shown in Figure 1). When the first housing 24 vibrates, it will cause the outer casing 100 of the electronic device 1000 to vibrate, thereby realizing the vibration reminder function of the motor unit 21 within the electronic device 1000. In some other embodiments, the first housing 24 can be a part of the outer casing 100, and the vibration of the first housing 24 is also the vibration of the outer casing 100, thereby realizing the vibration of the electronic device 1000 and realizing the vibration reminder function of the motor unit 21 within the electronic device 1000. This embodiment does not limit this aspect.

[0053] Referring to Figure 3, the magnetic field lines at the location of the first coil 212 are densely distributed. Referring to Figure 4, the horizontal axis in Figure 4 is the amplitude, and the vertical axis in Figure 4 is the power conversion factor of the first coil 212. The power conversion factor of the first coil 212 is directly proportional to the driving force received by the first coil 212. It can be seen that the power conversion factor of the first coil 212 is larger, that is, the driving force received by the first coil 212 is greater.

[0054] In this embodiment, by providing the first magnetic component 214, the magnetic field lines of the magnetic circuit unit 22 near the first coil 212 can be effectively concentrated, effectively increasing the magnetic field strength at the location of the first coil 212, increasing the magnetic force experienced by the first coil 212 during movement, thus increasing the force on the counterweight 211, improving the vibration effect of the motor unit 21, and enhancing the vibration feel of the first housing 24. Furthermore, the first magnetic component 214 is fixedly connected inside the first housing 24. During the movement of the counterweight 211, the first magnetic component 214 will not move with the movement of the counterweight 211. The first magnetic component 214 and the magnetic circuit unit 22 can form a magnetic field with a relatively stable magnetic field line distribution, which is beneficial to improving the stability of the reciprocating motion of the first coil 212 within the magnetic field of the first magnetic component 214 and the magnetic circuit unit 22.

[0055] Please refer to Figure 2 again. The first magnetic component 214 can be spaced apart from the counterweight 211. In other words, there is a gap between the first magnetic component 214 and the counterweight 211. This helps to avoid the influence of the friction force on the counterweight 211 on its movement speed when the counterweight 211 interferes with the first magnetic component 214 during movement, thus ensuring the vibration effect of the motor unit 21.

[0056] In some embodiments, the first magnetic component 214 may be located on the side of the counterweight 211 away from the magnetic circuit unit 22; that is, the first magnetic component 214 and the magnetic circuit unit 22 may also be arranged along the first direction Z. By setting the first magnetic component 214 on the side of the counterweight 211 away from the magnetic circuit unit 22, it is beneficial to increase the magnetic field strength in the area where the first coil 212 is located, so that the first coil 212 can be located in a magnetic field with a stronger magnetic field strength, which is beneficial to increase the magnetic force on the first coil 212, thereby effectively improving the vibration effect of the motor unit 21.

[0057] Referring to Figure 2, in some embodiments, the counterweight 211 may include a recess 2111. The number of recesses 2111 may be one or two. When there are two recesses 2111, the two recesses 2111 may be located at opposite ends of the counterweight 211. It is understood that the recess 2111 may be formed by the counterweight 211 being recessed inward from the side facing away from the magnetic circuit unit 22. Exemplarily, the counterweight 211 may include a first part 2112 and a second part 2113. The size of the first part 2112 is smaller than the size of the second part 2113. The first part 2112 protrudes from the side of the second part 2113 facing away from the magnetic circuit unit 22. The center of the first part 2112 and the center of the second part 2113 may be parallel to the first direction Z. The recess 2111 may be the space formed by the first part 2112 and the second part 2113.

[0058] At least a portion of the first magnetic component 214 may be located in the recess 2111. For example, a portion or all of the first magnetic component 214 may be located in the recess 2111, which can reduce the size of the speaker module 200 in the first direction A1, which is beneficial to miniaturization of the speaker module 200. It also improves the compactness of the arrangement of the first magnetic component 214 and the magnetic circuit unit 22, which is beneficial to increase the strength of the magnetic field around the first coil 212, which is beneficial to increase the magnetic force on the first coil 212, that is, to increase the driving force on the counterweight 211, and enhance the vibration effect of the motor unit 21.

[0059] Please refer to Figures 2, 5, 6, and 7. Figure 5 is a perspective view of a portion of the speaker module 200 shown in Figure 2 in some embodiments. It should be understood that the structure in Figure 5 is not entirely the same as the structure in Figure 2. Figure 6 is an exploded view of the speaker module 200 shown in Figure 5. Figure 7 is a structural diagram of a portion of the structure shown in Figure 6 from another perspective. The first housing 24 of Figure 6 is not shown in Figure 7; Figure 7 is a structural diagram of the opposite side of the perspective shown in Figure 6.

[0060] The first coil 212 can be located on the side of the counterweight 211 near the magnetic circuit unit 22, and at least a portion of the first coil 212 can be embedded in the counterweight 211. In some examples, the counterweight 211 can be provided with a mounting groove 2114, and a portion or all of the first coil 212 can be embedded in the mounting groove 2114. By setting at least a portion of the first coil 212 embedded in the counterweight 211, the contact area between the first coil 212 and the counterweight 211 can be increased, which is beneficial to improving the reliability of the connection between the first coil 212 and the counterweight 211. In addition, embedding at least a portion of the first coil 212 in the counterweight 211 can reduce the space occupied by the first coil 212 and the counterweight 211 in the speaker module 200, realize the miniaturization of the speaker module 200, and also help to improve the compactness of the arrangement of the first coil 212, the magnetic circuit unit 22 and the first magnetic component 214, increase the magnetic field strength in the area where the first coil 212 is located, and improve the vibration effect of the motor unit 21.

[0061] For example, the first coil 212 may include a first surface 212a located on the side of the first coil 212 facing the magnetic circuit unit 22, and the counterweight 211 may include a second surface 211a located on the side of the counterweight 211 facing the magnetic circuit unit 22. The first surface 212a may be flush with the second surface 211a. In other words, the first coil 212 is embedded in the counterweight 211, which can effectively reduce the space occupied by the first coil 212 and the counterweight 211 in the speaker module 200, which is conducive to the miniaturization of the speaker module 200, and also helps to improve the compactness of the arrangement of the first coil 212, the magnetic circuit unit 22 and the first magnetic component 214, thereby improving the vibration effect of the motor unit 21. In other embodiments, a portion of the first coil 212 is embedded in the counterweight 211, and the first surface 212a may protrude from the second surface 211a, i.e., the first surface 212a is located outside the mounting groove 2114. Alternatively, the first surface 212a may also be embedded in the mounting groove 2114 of the counterweight 211. Or, the first coil 212 may not be embedded in the counterweight 211, and the first coil 212 may be fixed to the second surface 211a. The embodiments of this application do not limit this.

[0062] Referring to Figure 6, the winding direction of the first coil 212 can be perpendicular to the first direction Z; in other words, the first coil 212 can be horizontally arranged, and the plane containing the first coil 212 is perpendicular to the first direction Z. A horizontal arrangement of the first coil 212 helps reduce the size of the motor unit 21 in the first direction Z, thus achieving miniaturization of the motor unit 21 and the speaker module 200. In other embodiments, the plane containing the first coil 212 may not be perpendicular to the first direction Z.

[0063] Referring to Figures 2 and 6, the first coil 212 can be a racetrack-shaped, ring-shaped, square, or other frame-like structure. When the first coil 212 is not energized, the first magnetic component 214 can be positioned corresponding to the first coil 212. In other words, the projection of the first magnetic component 214 on the plane where the first coil 212 is located overlaps with at least a portion of the first coil 212, which helps to increase the magnetic force experienced by the first coil 212 when it is energized.

[0064] The speaker module 200 may further include a second coil 217, which is spaced apart from the first coil 212 and respectively disposed at opposite ends of the counterweight 211. For example, the first coil 212 is disposed at the first end 211b of the counterweight 211, and the second coil 217 is disposed at the second end 211c of the counterweight 211. The first end 211b and the second end 211c are the two ends of the counterweight 211 disposed opposite each other in the second direction X. The winding direction of the second coil 217 and the connection method between the second coil 217 and the counterweight 211 can refer to the connection method between the first coil 212 and the counterweight 211.

[0065] Referring to Figure 2, the motor unit 21 may include a second magnetic component 216, which can be fixedly connected to the first housing 24. The second magnetic component 216 is correspondingly disposed at the second end 211c of the counterweight 211, and the first magnetic component 214 is correspondingly disposed at the first end 211b of the counterweight 211. The second magnetic component 216 can be fixed to the inner wall of the first housing 24 by means of adhesive or embedding, or it can be fixed to other structural components within the first housing 24. This embodiment does not limit this. The second magnetic component 216 does not move relative to the first housing 24, and its position relative to the first housing 24 is fixed. By setting the second magnetic component 216, the magnetic field lines of the magnetic circuit unit 22 near the second coil 217 can be effectively concentrated, which effectively increases the magnetic field strength in the area where the second coil 217 is located, increases the magnetic force on the second coil 217 during movement, and thus increases the force on the counterweight 211, improves the vibration effect of the motor unit 21, and enhances the vibration of the first housing 24.

[0066] In some embodiments, the second magnetic component 216 and the first magnetic component 214 can be symmetrically arranged about an axis of symmetry O, which passes through the center of the counterweight 211 and is perpendicular to the plane containing the counterweight 211. The axis of symmetry O can be parallel to the first direction Z. That is, the first magnetic component 214 and the second magnetic component 216 can be symmetrically arranged about an axis of symmetry O that is parallel to the first direction Z and passes through the center of the counterweight 211, which can effectively improve the symmetry of the reciprocating motion of the counterweight 211.

[0067] In some embodiments, the motor unit 21 may further include a third magnetic component 215. The third magnetic component 215 may be spaced apart from the first magnetic component 214 along the second direction X and correspondingly disposed at the same end of the counterweight 211, that is, the third magnetic component 215 and the first magnetic component 214 may both be disposed at the first end 211b. By providing the third magnetic component 215, it is beneficial to increase the magnetic force received by the first coil 212, thereby effectively enhancing the vibration effect of the motor unit 21. The third magnetic component 215 may be fixedly connected to the first housing 24. Exemplarily, the third magnetic component 215 may be fixed to the inner wall of the first housing 24 by means of adhesive or embedding, or the third magnetic component 215 may be fixed to other structural components within the first housing 24. This application embodiment does not limit this.

[0068] In some examples, the first coil 212 may include a first segment 2121 and a second segment 2122 in the second direction X, with the first segment 2121 being further away from the first portion 2112. A first magnetic component 214 may be provided corresponding to the first segment 2121, and a third magnetic component 215 may be provided corresponding to the second segment 2122.

[0069] Understandably, the structure of the third magnetic component 215 and the positional relationship between the third magnetic component 215 and the counterweight 211 can refer to the relevant design of the first magnetic component 214. In other embodiments, the structure of the third magnetic component 215 and the positional relationship between the third magnetic component 215 and the counterweight 211 can also be different from the relevant design of the first magnetic component 214. This application does not limit this aspect.

[0070] Referring again to Figure 2, the motor unit 21 may further include a seventh magnetic component 219. The seventh magnetic component 219 can be fixedly connected within the first housing 24. The seventh magnetic component 219 and the second magnetic component 216 can both be disposed at the second end 211c of the counterweight 211, and spaced apart along the second direction X. The seventh magnetic component 219 is fixed to the inner wall of the first housing 24 by adhesive or embedding. The seventh magnetic component 219 can also be fixed to other structural components within the first housing 24; this embodiment does not limit this. The seventh magnetic component 219 does not move relative to the first housing 24, and its position relative to the first housing 24 is fixed. By providing the seventh magnetic component 219, the magnetic field lines of the magnetic circuit unit 22 near the second coil 217 can be effectively concentrated, effectively increasing the magnetic field strength at the location of the second coil 217, increasing the magnetic force experienced by the second coil 217 during movement, thus increasing the force on the counterweight 211, improving the vibration effect of the motor unit 21, and enhancing the vibration of the first housing 24.

[0071] In some embodiments, the seventh magnetic component 219 and the third magnetic component 215 can be symmetrically arranged about the axis of symmetry O, which can effectively improve the symmetry of the reciprocating motion of the counterweight 211.

[0072] The magnetic circuit unit 22 may include a fourth magnetic component 221 and a fifth magnetic component 222 spaced apart. The fifth magnetic component 222 may surround at least a portion of the edge of the fourth magnetic component 221, and is spaced apart from the fourth magnetic component 221 in the second direction X. For example, the fifth magnetic component 222 may include a first side magnet 2221 and a second side magnet 2222 spaced apart along the second direction X. The first side magnet 2221 and the second side magnet 2222 are respectively located on opposite sides of the fourth magnetic component 221 in the second direction X, and surround a portion of the fourth magnetic component 221.

[0073] In some other embodiments, the fifth magnetic component 222 may also include a third side magnet (not shown in the figure) and a fourth side magnet (not shown in the figure). The third side magnet and the fourth side magnet are respectively connected between the two opposite ends of the first side magnet 2221 and the second side magnet 2222. In other words, the fifth magnetic component 222 may also be arranged in a ring shape, with the fifth magnetic component 222 surrounding the edge of the fourth magnetic component 221. This application embodiment does not limit this.

[0074] Referring to Figure 2, in some embodiments, the fourth magnetic component 221 may include a magnet 2211, a first magnetic guide plate 2212, and a second magnetic guide plate 2213. The first magnetic guide plate 2212 and the second magnetic guide plate 2213 are fixed on opposite sides of the fourth magnetic component 221 in the first direction Z, with the second magnetic guide plate 2213 closer to the motor unit 21. The magnet 2211 may be made of various metals such as iron and aluminum, nickel, and cobalt. The first magnetic guide plate 2212 and the second magnetic guide plate 2213 are used to concentrate the magnetic field lines between the magnet 2211 and the speaker unit 23.

[0075] In some embodiments, the first magnetic component 214 may be configured corresponding to the first side magnet 2221 (i.e., the fifth magnetic component 222) and the first segment 2121, and the third magnetic component 215 may be configured corresponding to the fourth magnetic component 221. That is, the first side magnet 2221, the first segment 2121, and the first magnetic component 214 have overlapping areas, and the fourth magnetic component 221, the second segment 2122, and the third magnetic component 215 have overlapping areas. It is understood that the second magnetic component 216 may be configured corresponding to the second side magnet 2222 and the second segment 2122, and the seventh magnetic component 219 may also be configured corresponding to the fourth magnetic component 221, and is located on both sides opposite to the third magnetic component 215 of the fourth magnetic component 221. This will not be elaborated further in the embodiments of this application.

[0076] In some embodiments, the side of the first side magnet 2221 facing the fourth magnetic component 221 and the side of the first magnetic component 214 facing the third magnetic component 215 can be flush. Correspondingly, the side of the fourth magnetic component 221 facing the first side magnet 2221 and the side of the third magnetic component 215 facing the first magnetic component 214 can also be flush. In other embodiments, the side of the first side magnet 2221 facing the fourth magnetic component 221 and the side of the first magnetic component 214 facing the third magnetic component 215 may not be flush, and the side of the fourth magnetic component 221 facing the first side magnet 2221 and the side of the third magnetic component 215 facing the first magnetic component 214 may not be flush. This application does not limit this aspect.

[0077] Please refer to Figures 8 to 10. Figure 8 is a structural schematic diagram of another speaker module 200 provided in an embodiment of this application. Figure 9 is a schematic diagram of the magnetic induction intensity of the speaker module 200 shown in Figure 8. Figure 10 is a schematic diagram of the relationship between the amplitude and the power conversion factor of the first coil 212 shown in Figure 8.

[0078] The first magnetic component 214 can be a magnet array. For example, the first magnetic component 214 may include a first sub-magnetic component 2141, a second sub-magnetic component 2142, and a third sub-magnetic component 2143. The third sub-magnetic component 2143 and the second sub-magnetic component 2142 are located on opposite sides of the first sub-magnetic component 2141. In other words, the second sub-magnetic component 2142, the first sub-magnetic component 2141, and the third sub-magnetic component 2143 are arranged sequentially along the second direction X. The arrangement direction of the magnetic poles of the third sub-magnetic component 2143 is opposite to the arrangement direction of the magnetic poles of the second sub-magnetic component 2142, and the arrangement direction of the magnetic poles of the second sub-magnetic component 2142 is perpendicular to the arrangement direction of the magnetic poles of the first sub-magnetic component 2141.

[0079] The first sub-magnetic component 2141 can have one corresponding N pole and one corresponding S pole. The second sub-magnetic component 2142 and the third sub-magnetic component 2143 can also each have one corresponding N pole and one corresponding S pole. The three arrows in Figure 8 indicate the arrangement direction of the magnetic poles of the corresponding first sub-magnetic component 2141, second sub-magnetic component 2142, and third sub-magnetic component 2143. The arrangement direction of the magnetic poles of the first sub-magnetic component 2141, second sub-magnetic component 2142, and third sub-magnetic component 2143 is the direction from the S pole to the N pole.

[0080] Figure 8 only schematically illustrates the magnetic pole arrangement direction of the first sub-magnetic component 2141, the second sub-magnetic component 2142, and the third sub-magnetic component 2143. The magnetic poles of the first sub-magnetic component 2141, the second sub-magnetic component 2142, and the third sub-magnetic component 2143 can also be arranged in other directions.

[0081] In some other embodiments, the first magnetic component 214 may include a first sub-magnetic component 2141 and a second sub-magnetic component 2142, but does not include a third sub-magnetic component 2143; or, the first magnetic component 214 may include a first sub-magnetic component 2141 and a third sub-magnetic component 2143, but does not include a second sub-magnetic component 2142; or, the first magnetic component 214 may include a first sub-magnetic component 2141, but does not include a second sub-magnetic component 2142 and a third sub-magnetic component 2143. The specific structure of the first magnetic component 214 is not limited in the embodiments of this application.

[0082] The third magnetic component 215 may include a fourth sub-magnetic component 2151, a fifth sub-magnetic component 2152, and a sixth sub-magnetic component 2153. The sixth sub-magnetic component 2153 and the fifth sub-magnetic component 2152 are located on opposite sides of the fourth sub-magnetic component 2151, and the arrangement direction of the magnetic poles of the sixth sub-magnetic component 2153 is opposite to the arrangement direction of the magnetic poles of the fifth sub-magnetic component 2152. The arrangement direction of the magnetic poles of the fifth sub-magnetic component 2152 is perpendicular to the arrangement direction of the magnetic poles of the fourth sub-magnetic component 2151.

[0083] The fourth sub-magnetic component 2151 can have one corresponding N pole and one corresponding S pole, and the fifth sub-magnetic component 2152 and the sixth sub-magnetic component 2153 can also each have one corresponding N pole and one corresponding S pole. The three arrows in Figure 8 indicate the direction of the magnetic pole arrangement of the corresponding fourth sub-magnetic component 2151, fifth sub-magnetic component 2152, and sixth sub-magnetic component 2153. The magnetic pole arrangement of the fourth sub-magnetic component 2151, fifth sub-magnetic component 2152, and sixth sub-magnetic component 2153 is the direction from the S pole to the N pole.

[0084] Figure 8 only schematically illustrates the magnetic pole arrangement direction of the fourth sub-magnetic component 2151, the fifth sub-magnetic component 2152, and the sixth sub-magnetic component 2153. The magnetic poles of the fourth sub-magnetic component 2151, the fifth sub-magnetic component 2152, and the sixth sub-magnetic component 2153 can also be arranged in other directions.

[0085] In some other embodiments, the third magnetic component 215 may include a fourth sub-magnetic component 2151 and a fifth sub-magnetic component 2152, but not a sixth sub-magnetic component 2153; or, the third magnetic component 215 may include a fourth sub-magnetic component 2151 and a sixth sub-magnetic component 2153, but not a fifth sub-magnetic component 2152; or, the third magnetic component 215 may include a fourth sub-magnetic component 2151, but not a fifth sub-magnetic component 2152 and a sixth sub-magnetic component 2153. The specific structure of the third magnetic component 215 is not limited in the embodiments of this application.

[0086] As can be seen from Figures 8 to 10, and referring to Figure 9, the magnetic field lines at the location of the first coil 212 are densely distributed. Referring to Figure 10, the horizontal axis in Figure 10 is the amplitude, and the vertical axis in Figure 10 is the power conversion factor of the first coil 212. The power conversion factor of the first coil 212 is directly proportional to the driving force received by the first coil 212. It can be seen that the power conversion factor of the first coil 212 is larger, that is, the driving force received by the first coil 212 is greater.

[0087] By setting the first magnetic component 214 and the third magnetic component 215 as a magnet array, the magnetic field lines around the first coil 212 can be effectively concentrated, the magnetic field strength in the area where the first coil 212 is located can be effectively increased, and the magnetic force on the first coil 212 can be increased, thereby effectively improving the vibration effect of the motor unit 21.

[0088] It is understood that the design of the second magnetic component 216 at the second end 211c of the counterweight 211 can refer to the design of the first magnetic component 214, and the design of the seventh magnetic component 219 can refer to the design of the third magnetic component 215. This application embodiment will not elaborate further on this.

[0089] Please refer to Figures 2 and 11. Figure 11 is a schematic diagram of the structure of the capacitor formed by the first electrode plate 251 and the second electrode plate 252 according to an embodiment of this application. The speaker module 200 may include the first electrode plate 251 and the second electrode plate 252. The first electrode plate 251 is fixed to the counterweight block 211, and the second electrode plate 252 is fixed to the inner wall of the first housing 24.

[0090] In some examples, the first electrode 251 can be fixed to the side of the counterweight 211 facing the first housing 24, and the second electrode 252 can be fixed to the side of the first housing 24 facing the counterweight 211. The first electrode 251 and the second electrode 252 are spaced apart along the second direction X. For example, the first electrode 251 can be fixed to the side of the counterweight 211 facing the first sidewall 241, and the second electrode 252 can be fixed to the first sidewall 241; or, the first electrode 251 can be fixed to the side of the counterweight 211 facing the second sidewall 242, and the second electrode 252 can be fixed to the second sidewall 242.

[0091] According to the formula: Where C is capacitance, ε r denoted by , S represents the area of ​​the first electrode 251 and the second electrode 252 facing each other, k is the electrostatic constant, and d is the distance between the first electrode 251 and the second electrode 252.

[0092] It can be seen that by setting a first electrode plate 251 and a second electrode plate 252, with the first electrode plate 251 set on the counterweight 211 and the second electrode plate 252 set on the first housing 24, as the counterweight 211 moves, the first electrode plate 251 on the counterweight 211 can be driven to move along the second direction X, causing the distance between the first electrode plate 251 and the second electrode plate 252 to change. The change in the distance between the first electrode plate 251 and the second electrode plate 252 can correspondingly cause a change in capacitance, thereby allowing the amplitude of the counterweight 211 to be measured. Based on the amplitude, the input signal (alternating current) of the first coil 212 can be adjusted. This can avoid problems such as excessive driving force on the first coil 212 due to excessive alternating current, causing the counterweight 211 to collide with the first housing 24, and also avoid problems such as insufficient driving force on the first coil 212, resulting in insufficient vibration of the motor. Furthermore, the amplitude of the counterweight 211 during its movement is measured by utilizing the change in the distance between the first electrode plate 251 and the second electrode plate 252. This method has a simple structure, is easy to install, and is small in size, occupying little space. It is advantageous for use in smaller spaces and facilitates the miniaturization of the speaker module 200.

[0093] In some other embodiments, the first electrode 251 can be fixed to the side of the first portion 2112 of the counterweight 211 facing the third magnetic component 215, and the second electrode 252 can be fixed to the third magnetic component 215; or the first electrode 251 can be fixed to the side of the first portion 2112 facing the seventh magnetic component 219, and the second electrode 252 can be fixed to the seventh magnetic component 219, with the first electrode 251 and the second electrode 252 along the second direction X. During the movement of the counterweight 211, the distance between the first electrode 251 and the second electrode 252 will also change, which can correspondingly cause a change in capacitance, thereby realizing the measurement of the amplitude of the counterweight 211. This embodiment will not be described in detail here.

[0094] Please refer to Figures 1, 2, and 12. Figure 12 is a schematic diagram showing the relationship between the amplitude of the first coil 212 and the second coil 217 and the power conversion factor provided in the embodiment of this application. When the first coil 212 and the second coil 217 are energized, the detection unit 300 is used to detect the power conversion factor of the first coil 212 and the power conversion factor of the second coil 217. That is, the detection unit 300 can monitor the driving force (i.e., the magnetic force experienced by the first coil 212 and the second coil 217 in the magnetic field). When the first coil 212 and the second coil 217 are not energized, the counterweight 211 is in its initial position, and the magnetic field strength around the first coil 212 and the second coil 217 is the same. When the counterweight 211 reciprocates along the second direction X and is not in its initial position, the driving force on the first coil 212 and the second coil 217 changes. The detection unit 300 detects the change in the driving force on the first coil 212 and the second coil 217, thereby adjusting the input signal (alternating current) of the first coil 212 and / or the second coil 217. This can avoid problems such as the counterweight 211 hitting the first housing 24 due to excessive driving force caused by excessive alternating current, and also avoid problems such as insufficient driving force on the first coil 212 leading to insufficient vibration of the motor.

[0095] Referring again to Figures 6 and 7, the motor unit 21 may further include an adjusting member 218, which is connected between the elastic member 213 and the first housing 24. The adjusting member 218 may be made of materials such as foam. When the elastic member 213 deforms, the first housing 24 and the elastic member 213 can provide suitable damping for the motor unit 21 by placing the adjusting member 218 (e.g., foam) between them. In some other embodiments, the adjusting member 218 may also be located between the elastic member 213 and the counterweight 211; this embodiment does not limit this.

[0096] In some embodiments, the speaker module 200 may further include a support member 26, which abuts against the magnetic circuit unit 22 and the first housing 24. The support member 26 may be made of a flexible material such as a silicone pad to prevent the magnetic circuit unit 22 from resonating and impacting the first housing 24 in the first direction Z due to the movement of the speaker unit 23, thereby improving the reliability of the speaker module 200. The support member 26 may also be made of a non-flexible material; the material of the support member 26 is not limited in this application embodiment. In other embodiments, the support member 26 may also be made of a magnetic material to concentrate the magnetic field lines between the magnetic circuit unit 22 and the first housing 24, thereby increasing the magnetic field strength at the location of the first coil 212 and / or the second coil 217, and thus increasing the magnetic force received by the first coil 212 and / or the second coil 217.

[0097] In some examples, the counterweight 211 may be provided with a through groove 2115, and the support member 26 may be located in the through groove 2115 and abut against the magnetic circuit unit 22 and the first housing 24, which is beneficial to improve the compactness of the arrangement inside the speaker module 200 and to achieve the miniaturization of the speaker module 200.

[0098] Referring to Figures 6 and 7, the speaker unit 23 may include a diaphragm 231, a frame 232, and a third coil 233. The diaphragm 231 is fixedly connected to the frame 232 and spaced apart from the magnetic circuit unit 22. One end of the third coil 233 is fixedly connected to the diaphragm 231, and the other end of the third coil 233 is arranged around the outside of the fourth magnetic component 221 and located in the magnetic field of the magnetic circuit unit 22 (i.e., between the fourth magnetic component 221 and the fifth magnetic component 222). The third coil 233 is used to drive the diaphragm 231 to move along the first direction Z when energized. After current is passed through the third coil 233, it can cut the magnetic field lines of the magnetic circuit unit 22, causing the diaphragm 231 to reciprocate. That is, the third coil 233 is used to drive the diaphragm 231 to reciprocate in the magnetic field of the magnetic circuit unit 22. During the vibration of the diaphragm 231, it resonates with the surrounding air and emits sound, thereby converting the electrical signal into an acoustic signal and realizing the sound emission function of the speaker unit 23.

[0099] The third coil 233 can be fixed to the diaphragm 231 by means of adhesive or other means, or it can be fixed to other structural components in the speaker unit 23 and fixed to the diaphragm 231 by such structural components. This application embodiment does not limit this.

[0100] The speaker frame 232 provides structural support for the speaker unit 23. For example, the speaker frame 232 can be made of materials such as plastic. When the speaker unit 23 is fixedly connected to the housing 100, the speaker frame 232 can be fixedly connected to the housing 100. Alternatively, the speaker module 200 may also include a second housing (not shown in the figure), in which case the speaker frame 232 can be fixedly connected to the second housing, and the second housing can be fixedly connected to the housing 100. That is, the speaker frame 232 can be fixedly connected to the housing 100 through the second housing.

[0101] Referring to Figure 2, in some embodiments, the loudspeaker unit 23 may include a sixth magnetic component 234 (as shown in Figure 2). The sixth magnetic component 234 may be located between the magnetic circuit unit 22 and the diaphragm 231. For example, the loudspeaker unit 23 may not include the frame 232. The sixth magnetic component 234 can be used to be located between the diaphragm 231 and the magnetic circuit unit 22. The diaphragm 231 is fixed to the sixth magnetic component 234. The sixth magnetic component 234 can provide strength support for the loudspeaker unit 23. The sixth magnetic component 234 is made of a magnetic material. The sixth magnetic component 234 can concentrate the magnetic field lines of the magnetic circuit unit 22 near the third coil 233 while playing a structural support role, effectively increasing the magnetic field strength at the location of the third coil 233, increasing the magnetic force experienced by the third coil 233 during movement, that is, increasing the amplitude of the diaphragm 231. For another example, the loudspeaker unit 23 may include the frame 232 and the sixth magnetic component 234. The sixth magnetic component 234 may also be fixedly connected to the frame 232. This application embodiment does not limit this.

[0102] The above are merely specific embodiments of this application, but 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. A loudspeaker module (200), characterized by It includes a magnetic circuit unit (22), a speaker unit (23), a motor unit (21), and a housing (24), wherein the speaker unit (23), the magnetic circuit unit (22), and the motor unit (21) are arranged in sequence; The motor unit (21) includes a counterweight (211), a first coil (212), an elastic element (213), and a first magnetic component (214). The counterweight (211) is spaced apart from the magnetic circuit unit (22). The elastic element (213) is connected between the counterweight (211) and the housing (24). The first magnetic component (214) is fixedly connected inside the housing (24). The first coil (212) is fixedly connected to the counterweight (211). The first coil (212) is located in the magnetic field of the magnetic circuit unit (22) and the first magnetic component (214). The first coil (212) is used to drive the counterweight (211) to move when energized.

2. The speaker module (200) according to claim 1, characterized in that, The first magnetic component (214) is located on the side of the counterweight (211) away from the magnetic circuit unit (22).

3. The loudspeaker module (200) according to claim 1 or 2, characterized in that The first magnetic component (214) is spaced apart from the counterweight (211).

4. The speaker module (200) according to claim 2, characterized in that, The counterweight (211) includes a recess (2111), and at least a portion of the first magnetic component (214) is located in the recess (2111).

5. The speaker module (200) according to claim 2, characterized in that, The first coil (212) is located on the side of the counterweight (211) near the magnetic circuit unit (22), and at least part of the first coil (212) is embedded in the counterweight (211).

6. The loudspeaker module (200) according to claim 5, characterized in that The surface of the first coil (212) is flush with the surface of the counterweight (211).

7. The speaker module (200) according to claim 1 or 2, characterized in that, The first magnetic component (214) includes a first sub-magnetic component (2141) and a second sub-magnetic component (2142). The first sub-magnetic component (2141) and the second sub-magnetic component (2142) are arranged in a direction perpendicular to the magnetic circuit unit (22) and the motor unit (21). The arrangement direction of the magnetic poles of the first sub-magnetic component (2141) is perpendicular to the arrangement direction of the magnetic poles of the second sub-magnetic component (2142).

8. The loudspeaker module (200) according to claim 7, characterized in that The first magnetic component (214) includes a third sub-magnetic component (2143), which is located on opposite sides of the second sub-magnetic component (2142) and the magnetic poles of the third sub-magnetic component (2143) are arranged in the opposite direction to those of the second sub-magnetic component (2142).

9. The speaker module (200) according to claim 1 or 2, characterized in that, The motor unit (21) includes a second magnetic component (216), which is fixedly connected to the housing (24). The second magnetic component (216) is correspondingly disposed at one end of the counterweight (211), and the first magnetic component (214) is correspondingly disposed at the other end of the counterweight (211). The second magnetic component (216) and the first magnetic component (214) are symmetrically disposed about an axis of symmetry (O), which passes through the center of the counterweight (211) and is perpendicular to the plane in which the counterweight (211) is located.

10. The speaker module (200) according to claim 1 or 2, characterized in that, The motor unit (21) includes a third magnetic component (215), which is fixedly connected to the housing (24). The third magnetic component (215) is spaced apart from the first magnetic component (214) and is correspondingly located at the same end of the counterweight (211). The magnetic circuit unit (22) includes a fourth magnetic component (221) and a fifth magnetic component (222) arranged at intervals. The first magnetic component (214) is arranged correspondingly to the fifth magnetic component (222), and the third magnetic component (215) is arranged correspondingly to the fourth magnetic component (221).

11. The speaker module (200) according to claim 1 or 2, characterized in that, The speaker module (200) includes a first electrode plate (251) and a second electrode plate (252), the first electrode plate (251) being fixed to the counterweight (211) and the second electrode plate (252) being fixed to the housing (24).

12. The speaker module (200) according to claim 1 or 2, characterized in that, The loudspeaker unit (23) includes a diaphragm (231) and a sixth magnetic component (234), the sixth magnetic component (234) being located between the magnetic circuit unit (22) and the diaphragm (231).

13. An electronic device (1000), characterized by, It includes a housing (100) and a speaker module (200) according to any one of claims 1 to 12, the speaker module (200) being located within the housing (100).

14. The electronic device (1000) according to claim 13, characterized by, The electronic device (1000) includes a detection unit (300), and the motor unit (21) includes a second coil (217). The second coil (217) is spaced apart from the first coil (212). When the first coil (212) and the second coil (217) are energized, the detection unit (300) is used to detect the driving force received by the first coil (212) and the second coil.

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