Loudspeaker and electronic equipment

Abstract

The invention provides a loudspeaker and electronic equipment. The loudspeaker comprises a vibration system which comprises a vibrating diaphragm and a voice coil, and the voice coil is fixed on the vibrating diaphragm; the magnetic circuit system and the vibration system are arranged in a spaced mode, the magnetic circuit system comprises a magnetic circuit assembly and an upper magnetic conduction assembly, and the upper magnetic conduction assembly is located on the side, close to the vibrating diaphragm, of the magnetic circuit assembly and fixedly connected with the magnetic circuit assembly; the adjusting magnet is fixed to the vibration system, at least part of the adjusting magnet is located in the magnetic gap of the upper magnetic conduction assembly, the polarization direction of the adjusting magnet is parallel to the vibrating diaphragm, the adjusting magnet is provided with a first end and a second end which are oppositely arranged in the polarization direction, and the first end is close to the upper magnetic conduction assembly relative to the second end; repulsive force is generated between the first end and the upper magnetic conductive assembly. The loudspeaker provided by the embodiment of the invention can meet the rigidity requirement of a vibration system while having better low-frequency performance, and the swing of the voice coil during movement is smaller.

Description

Technical Field

[0001] The present application relates to the field of loudspeakers, and in particular to a loudspeaker and an electronic device. Background Art

[0002] Traditional speaker designs usually include a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil disposed on the diaphragm. The magnetic circuit system provides a magnetic field for the position where the voice coil is located. When current is input to the voice coil, the voice coil will deviate from its equilibrium position under the action of the Ampere force and move back and forth, pushing the diaphragm to vibrate. At this time, the vibration system will undergo elastic deformation and generate an elastic restoring force to resist the elastic deformation. The elastic restoring force will suppress the vibration of the diaphragm, causing the resonant frequency of the speaker to increase and the low-frequency performance of the speaker to decrease.

[0003] At present, the elastic restoring force of the vibration system is usually reduced by reducing the thickness of the folding ring structure on the diaphragm, or selecting a material with a lower Young's modulus to prepare the folding ring structure on the diaphragm. However, this will cause the voice coil to deflect or tilt left and right when doing reciprocating motion, that is, polarization occurs, causing the voice coil to rub against the magnetic circuit component and produce noise, affecting the acoustic performance of the speaker. Summary of the invention

[0004] The embodiments of the present application provide a speaker and an electronic device including the speaker, aiming to provide a speaker with smaller voice coil swing and better low-frequency performance, and an electronic device including the speaker.

[0005] In a first aspect, a loudspeaker is provided. The loudspeaker comprises a vibration system, comprising a diaphragm and a voice coil, wherein the voice coil is fixed to the diaphragm; a magnetic circuit system, which is spaced apart from the vibration system, and comprises a magnetic circuit assembly and an upper magnetic conductive assembly, wherein the upper magnetic conductive assembly is located on a side of the magnetic circuit assembly close to the diaphragm and is fixedly connected to the magnetic circuit assembly; an adjusting magnet, which is fixed to the vibration system, wherein at least part of the adjusting magnet is located in a magnetic gap of the upper magnetic conductive assembly, wherein the adjusting magnet has a first end and a second end which are arranged opposite to each other, wherein the first end is close to the upper magnetic conductive assembly relative to the second end, wherein the first end generates a repulsive force with a portion of the upper magnetic conductive assembly facing the first end, and wherein the second end generates a repulsive force with a portion of the upper magnetic conductive assembly facing the second end.

[0006] It can be understood that the speaker in this embodiment fixes the adjustment magnet on the vibration system, and when the voice coil is in the equilibrium position, at least part of the adjustment magnet can be located in the magnetic gap of the upper magnetic conductive component. The adjustment magnet has a first end and a second end that are arranged opposite to each other. The first end is close to the upper magnetic conductive component relative to the second end. The first end generates a repulsive force with the portion of the upper magnetic conductive component facing the first end, and the second end generates a repulsive force with the portion of the upper magnetic conductive component facing the second end. In other words, the polarity of the first end of the adjustment magnet is the same as the polarity of the portion of the upper magnetic conductive component facing the first end. The polarity of the second end of the adjustment magnet is the same as the polarity of the portion of the upper magnetic conductive component facing the second end. At this time, a repulsive force can be generated between the first end and the upper magnetic conductive component. A repulsive force can also be generated between the second end and the upper magnetic conductive component. The adjustment magnet can be subjected to a repulsive force from the upper magnetic conductive component. As the absolute value of the displacement of the voice coil relative to its equilibrium position increases, the absolute value of the total repulsive force to which the adjustment magnet is subjected also increases, and the two approximately satisfy a linear relationship, and the linearity of the two is high. The direction of the total repulsive force on the regulating magnet is opposite to the direction of the elastic restoring force of the vibration system itself. The total repulsive force on the regulating magnet can act on the vibration system. In this way, the force exerted by the regulating magnet on the vibration system (that is, the total repulsive force on the regulating magnet in this embodiment) can be equivalent to an elastic component, and the elastic coefficient of the elastic component can be Km. At this time, the resonant frequency F0 of the speaker can be:

[0007]

[0008] It can be seen from the above expression that when the total repulsive force on the regulating magnet in this embodiment acts on the vibration system, it can offset at least part of the elastic restoring force of the vibration system itself in the speaker, thereby reducing the influence of the elastic restoring force of the vibration system itself on the vibration of the diaphragm. In this way, under the condition that the thickness and material of the diaphragm are exactly the same, the resonant frequency F0 of the speaker in this embodiment is smaller, and the low-frequency performance of the speaker is better. In other words, the speaker in this embodiment can meet the stiffness requirements of the vibration system itself while having good low-frequency performance, and the swing of the voice coil is smaller when it moves.

[0009] Secondly, compared to the speaker in which the force acting on the adjusting magnet from the upper magnetic component is an attractive force, the force acting on the adjusting magnet from the upper magnetic component is a repulsive force, which can effectively avoid the problem that when the distance between the adjusting magnet and the upper magnetic component is too close, the attractive force from the upper magnetic component on the adjusting magnet increases sharply, causing the adjusting magnet to be adsorbed on the upper magnetic component, making the voice coil unable to move normally, which is conducive to ensuring the normal operation of the speaker. In other words, the distance between the adjusting magnet and the upper magnetic component in this embodiment can be small, which is conducive to realizing the miniaturization of the speaker.

[0010] In a possible implementation, the size of the adjusting magnet in the first direction is larger than the size of the magnetic gap of the upper magnetic conductive component in the first direction, and the first direction is along the thickness direction of the diaphragm. In this way, the size of the adjusting magnet is larger, and the repulsive force of the adjusting magnet from the upper magnetic conductive component is larger, so that the force of the adjusting magnet on the vibration system is increased, thereby offsetting the elastic restoring force of the vibration system of the speaker itself, so that the speaker can have better low-frequency performance.

[0011] Secondly, compared with the smaller size of the adjusting magnet, the repulsive force from the first upper magnet and the second upper magnet is smaller. When the displacement of the voice coil moving along the first direction or the second direction is large, the adjusting magnet is far away from the first upper magnet and the second upper magnet, so that the total repulsive force from the first upper magnet and the second upper magnet to the adjusting magnet is sharply reduced, so that the total repulsive force to the adjusting magnet at this time does not satisfy the linear relationship with the displacement of the voice coil, and the linearity of the two is low. However, the size of the adjusting magnet in the first direction in this embodiment is large, even if the displacement of the voice coil moving along the first direction or the second direction is large, the distance between the adjusting magnet and the first upper magnet and the second upper magnet is still close, so that the relationship between the total repulsive force from the first upper magnet and the second upper magnet to the adjusting magnet and the displacement of the voice coil can be closer to a linear relationship, and the linearity of the two is high. In other words, the speaker in this embodiment increases the size of the adjusting magnet in the first direction, so that even when the speaker works at high power and large amplitude, the total repulsive force to the adjusting magnet can still maintain a linear relationship with the displacement of the voice coil, and the linearity of the two is high. That is, the speaker in this embodiment can meet high power requirements while improving low-frequency performance.

[0012] In a possible implementation, the distance between the surface of the adjusting magnet facing away from the diaphragm and the diaphragm is a first distance, the distance between the surface of the voice coil facing away from the diaphragm and the diaphragm is a second distance, and the first distance is less than or equal to the second distance. In this way, in the thickness direction of the diaphragm, the lower surface of the adjusting magnet (i.e., the surface of the adjusting magnet facing away from the diaphragm) will not exceed the lower surface of the voice coil (i.e., the surface of the voice coil facing away from the diaphragm), thereby preventing the adjusting magnet from colliding with other components when the voice coil moves in the direction away from the diaphragm, thereby affecting the normal operation of the speaker.

[0013] In one possible implementation, the upper magnetic conductive component includes a first upper magnetic conductive body and a second upper magnetic conductive body, the second upper magnetic conductive body surrounds the first upper magnetic conductive body and is spaced apart from the first upper magnetic conductive body, and the gap between the first upper magnetic conductive body and the second upper magnetic conductive body constitutes at least a part of the magnetic gap of the upper magnetic conductive component; the adjusting magnet is fixedly connected to the side surface of the voice coil, at least a part of the adjusting magnet is located between the first upper magnetic conductive body and the second upper magnetic conductive body, and the part of the adjusting magnet facing the first upper magnetic conductive body repels the part of the first upper magnetic conductive body facing the adjusting magnet.

[0014] It can be understood that when the voice coil is in a stationary state, compared with the thickness direction of the diaphragm, the adjustment magnet in this embodiment and the first upper magnetic conductor and the second upper magnetic conductor that provide repulsive force to the adjustment magnet are arranged on the left, middle and right. The arrangement direction of the three is perpendicular to the direction of movement of the voice coil (that is, perpendicular to the thickness direction of the diaphragm). In this way, when the voice coil is energized and moves, the adjustment magnet has little effect on the amplitude of the voice coil, and the amplitude of the voice coil is only limited by the distance between the voice coil and other components of the speaker in its direction of movement. In other words, the speaker in this embodiment can achieve large amplitude and high power operation, which is beneficial to improving the acoustic performance of the speaker.

[0015] In a possible implementation, the adjusting magnet includes a first part and a second part which are spaced apart, and the first part and the second part are both fixedly connected to the side of the voice coil facing the first upper magnetic conductor, or the first part and the second part are both fixedly connected to the side of the voice coil facing the second upper magnetic conductor. In this way, the adjusting magnet has a smaller size and a smaller mass, thereby preventing the adjusting magnet from pulling the voice coil due to excessive mass, thereby affecting the normal operation of the voice coil.

[0016] In a possible implementation, the upper magnetic conductive component is provided with a first avoidance groove, the opening of the first avoidance groove faces the adjusting magnet, and at least a portion of the adjusting magnet is located in the first avoidance groove. In this way, by providing the first avoidance groove to avoid the adjusting magnet, the adjusting magnet can also utilize the size space of the upper magnetic conductive component, and the overall structure of the speaker is more compact, which is conducive to realizing a miniaturized setting of the speaker.

[0017] In one possible implementation, the upper magnetic conductive component includes a first upper magnetic conductive body and a second upper magnetic conductive body, the second upper magnetic conductive body surrounds the first upper magnetic conductive body and is spaced apart from the first upper magnetic conductive body, the first upper magnetic conductive body has a first avoidance hole, the first avoidance hole passes through the surface of the first upper magnetic conductive body facing the diaphragm and the surface of the first upper magnetic conductive body facing away from the diaphragm, and the first avoidance hole constitutes a part of the magnetic gap of the upper magnetic conductive component; the loudspeaker also includes a connecting bracket, the connecting bracket is located on the inner side of the voice coil and is fixedly connected to the diaphragm, and the adjusting magnet is fixedly connected to the connecting bracket; at least part of the adjusting magnet is located in the first avoidance hole, and the part of the adjusting magnet facing the first upper magnetic conductive body repels the part of the first upper magnetic conductive body facing the adjusting magnet.

[0018] It is understandable that, compared to fixing the adjusting magnet on the side of the voice coil, when the working power of the speaker is large, the current on the voice coil increases, causing the voice coil to heat up and the temperature to rise. As the temperature of the voice coil rises, the high temperature will cause the adjusting magnet in contact with the voice coil to demagnetize, which reduces the linearity between the total repulsive force on the adjusting magnet and the displacement of the voice coil, affecting the low-frequency performance of the speaker. In this embodiment, the adjusting magnet is fixed to the connecting bracket connected to the diaphragm, and avoidance holes are provided in the first upper magnetic conductor and the first magnet to avoid the connecting bracket and the adjusting magnet fixed to the connecting bracket, so as to effectively avoid the increase in the temperature of the adjusting magnet due to the heating of the voice coil, thereby preventing the demagnetization phenomenon, so that the speaker can meet the high power requirements while still having good low-frequency performance.

[0019] In one possible implementation, the speaker also includes a lower magnet, a center bracket, a first magnetic component and a second magnetic component. The lower magnet is fixedly connected to the surface of the magnetic circuit component facing away from the upper magnetic component. The magnetic circuit component is provided with a second avoidance hole. The second avoidance hole is connected to the first avoidance hole. At least part of the lower magnet is exposed relative to the second avoidance hole. The first magnetic component is fixedly connected to the diaphragm, and the second magnetic component is fixedly connected to the surface of the lower magnet facing the second avoidance hole. The center bracket is connected between the first magnetic component and the second magnetic component, and at least part of the adjustment magnet is located between the first upper magnet and the center bracket. The first magnetic component generates an attraction force with the adjustment magnet, and the second magnetic component generates an attraction force with the adjustment magnet.

[0020] It can be understood that when the amplitude of the voice coil is large, the displacement of the voice coil along the thickness direction of the diaphragm is large, and the distance between the adjusting magnet and the first upper magnetic conductor is far, the total repulsive force on the adjusting magnet will decrease sharply, so that the force of the adjusting magnet on the vibration system at this time does not satisfy the linear relationship with the displacement of the voice coil, and the linearity of the two is low. In this embodiment, by respectively arranging the first magnetic member and the second magnetic member at both ends of the central bracket, the first magnetic member and the second magnetic member can generate an attractive force with the adjusting magnet. At this time, the force of the adjusting magnet on the vibration system can be the sum of the total repulsive force (that is, the repulsive force of the upper magnetic conductor assembly) received by the adjusting magnet and the attractive force received by the adjusting magnet from the magnetic assembly. In this way, even if the displacement of the voice coil along the thickness direction of the diaphragm is large, the distance between the adjusting magnet and the first upper magnetic conductor is far, resulting in a sharp decrease in the total repulsive force received by the adjusting magnet, the total attractive force received by the adjusting magnet can compensate for the sharply reduced total repulsive force, so that the force of the adjusting magnet on the vibration system can still maintain a linear relationship with the displacement of the voice coil. That is, the speaker in this embodiment can meet high power requirements while improving low-frequency performance.

[0021] In addition, the polarization direction of the adjusting magnet in this embodiment is parallel to the diaphragm. Even if the adjusting magnet moves along with the voice coil in the direction away from the diaphragm and approaches the lower magnetic conductor, the forces exerted by the lower magnetic conductor on the first end and the second end of the adjusting magnet are equal in magnitude and opposite in direction, thereby effectively avoiding the lower magnetic conductor from generating additional repulsive or attractive force on the adjusting magnet, affecting the normal operation of the speaker.

[0022] In one possible implementation, the first magnetic member is a soft magnet; or, the first magnetic member is a permanent magnet, the polarization direction of the first magnetic member is parallel to the thickness direction of the diaphragm, and the polarity of the part of the first magnetic member facing the center bracket is opposite to the polarity of the part of the adjusting magnet facing the center bracket.

[0023] It is understandable that, under the condition that the size of the first magnetic member is the same, when the first magnetic member is a soft magnet, the mass of the first magnetic member is smaller, which is conducive to reducing the overall mass of the speaker and achieving a lightweight setting. When the first magnetic member is a permanent magnet, the coercive force of the first magnetic member is stronger, and the first magnetic member is not easily affected by the magnetic field of other components inside the speaker, which is conducive to ensuring the attraction between the first magnetic member and the adjustment magnet.

[0024] In a possible implementation, the distance from the first magnetic member to the second end of the adjusting magnet is equal to the distance from the second magnetic member to the second end of the adjusting magnet. In this way, when the voice coil is in a balanced position, the attraction of the first magnetic member to the adjusting magnet and the attraction of the second magnetic member to the adjusting magnet can be equal and opposite, that is, they can cancel each other out, thereby preventing the first magnetic member and the second magnetic member from exerting a force on the adjusting magnet, causing the balanced position of the voice coil to deviate from the designed position, and affecting the normal operation of the speaker.

[0025] In a possible implementation, the diaphragm includes a vibrating portion and a folding ring portion, the vibrating portion is annular, and the folding ring portion connects the inner periphery of the vibrating portion and the first magnetic member. Thus, compared with the case where the diaphragm is not provided with a folding ring portion, and the first magnetic member is directly fixedly connected to the vibrating portion, the vibrating portion of the diaphragm in this embodiment can be indirectly connected to the first magnetic member through the folding ring portion, so that the vibrating portion is easy to vibrate, which is beneficial to improving the acoustic performance of the speaker.

[0026] In a possible implementation, the connecting bracket is made of a non-magnetic material, so that the connecting bracket can avoid affecting the magnetic field inside the speaker and affecting the normal operation of the speaker.

[0027] In a possible implementation, the projection of the adjusting magnet on the plane where the upper magnetic conductive component is located is symmetrically arranged about the center of the upper magnetic conductive component. In this way, the sum of the horizontal components of the repulsive force exerted on the adjusting magnet by the first upper magnetic conductive component and the second upper magnetic conductive component is , thereby preventing the adjusting magnet from exerting a component of force in the horizontal direction on the voice coil, causing the voice coil to deflect and affecting the normal operation of the speaker.

[0028] In a possible implementation, when no current is input to the voice coil, the force exerted by the regulating magnet on the vibration system is 0, and when current is input to the voice coil, the direction of the force exerted by the regulating magnet on the vibration system is opposite to the direction of the elastic restoring force of the vibration system itself. In this way, the force exerted by the regulating magnet on the vibration system is opposite to the elastic restoring force of the vibration system itself, thereby offsetting at least part of the elastic restoring force of the vibration system and improving the low-frequency performance of the speaker.

[0029] In a second aspect, an electronic device is provided. The electronic device includes a device housing and the above-mentioned speaker, and the speaker is arranged inside the device housing. The speaker in the electronic device of this embodiment can meet the stiffness requirements of the vibration system itself while having good low-frequency performance, and the swing of the voice coil is small when it moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the implementation methods of the present application or the background technology, the drawings required for use in the implementation methods of the present application or the background technology will be described below.

[0031] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A schematic structural diagram of a speaker of an electronic device in one embodiment is shown;

[0033] Figure 3 yes Figure 2 A schematic diagram of the exploded structure of a loudspeaker in some embodiments is shown;

[0034] Figure 4 yes Figure 2 The schematic diagram of the exploded structure of the magnetic circuit system shown;

[0035] Figure 5 yes Figure 4 The assembly structure diagram of the magnetic circuit system shown;

[0036] Figure 6 yes Figure 2 The illustrated schematic diagram of a partial cross-sectional structure of a loudspeaker in one embodiment cut along AA;

[0037] Figure 7 yes Figure 3 The exploded structural diagram of the support member and the circuit board shown;

[0038] Figure 8 yes Figure 7 A schematic diagram of the structure of the assembly structure of the structure shown in another viewing angle;

[0039] Fig. 9 yes Figure 2 The illustrated schematic diagram of a partial cross-sectional structure of a loudspeaker in one embodiment cut along AA;

[0040] Fig.10 yes Figure 2 A schematic structural diagram of the assembly structure of the vibration system and the adjustment magnet shown in another perspective;

[0041] Fig.11 yes Figure 3 A schematic structural diagram of the assembly structure of the vibration system, the adjustment magnet, the support member and the circuit board shown in another perspective;

[0042] Fig.12 yes Figure 2 The illustrated schematic diagram of a partial cross-sectional structure of a loudspeaker in one embodiment cut along AA;

[0043] Fig.13 yes Figure 3 A schematic diagram of the assembly of a portion of the loudspeaker shown;

[0044] Fig.14 yes Fig.13 A schematic diagram of the structure shown in another perspective;

[0045] Fig.15a yes Figure 2 The cross-sectional structure diagram of a loudspeaker in one embodiment cut along AA is shown;

[0046] Fig.15b yes Fig.15a The structure shown hides the schematic cross-sectional structure of the shell;

[0047] Fig.16 yes Fig.14 A schematic diagram of the cross-sectional structure of the loudspeaker when the voice coil is in a balanced position;

[0048] Fig.17 yes Fig.14 The schematic diagram of the cross-sectional structure of the voice coil of the loudspeaker shown is shown at one moment when the first current is inputted into the voice coil of the loudspeaker;

[0049] Fig.18 yes Fig.14A schematic diagram of a cross-sectional structure of the loudspeaker shown when a second current is input into the voice coil of the loudspeaker at a certain moment;

[0050] Fig.19 yes Fig.14 The schematic diagram of the simulation curve of the voice coil displacement of the loudspeaker and the repulsive force of the upper magnetic conductive component on the regulating magnet is shown;

[0051] Fig. 20 yes Fig.14 The schematic diagram of the simulation of the frequency response curve of the loudspeaker shown and the general loudspeaker unit;

[0052] Fig.21 yes Fig.14 A schematic diagram of a partial cross-section structure of a loudspeaker in another embodiment at another viewing angle is shown;

[0053] Fig. 22 yes Fig.21 A schematic cross-sectional structure diagram of a loudspeaker in yet another embodiment is shown;

[0054] Fig.23 yes Fig. 22 The shown figure is a schematic diagram of the cross-sectional structure of a loudspeaker in yet another embodiment. DETAILED DESCRIPTION

[0055] The embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0056] In the description of the implementation mode of the present application, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. The directional terms mentioned in the implementation mode of the present application, such as "upper", "lower", "inner", "outer", etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the implementation mode of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the implementation mode of the present application. "Multiple" means at least two.

[0057] In the embodiments of the present application, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.

[0058] In the implementation manner of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0059] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in another embodiment", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0060] It is to be understood that the specific implementations described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0061] Figure 1 It is a structural diagram of an electronic device 1000 provided in an embodiment of the present application.

[0062] like Figure 1 As shown, the electronic device 1000 may be a mobile phone, a tablet computer, a multimedia player, a headset, a stereo, a laptop computer, a vehicle-mounted device, a foldable terminal device, a television or a wearable device, or other devices with a speaker and / or a microphone. The wearable device may be a smart bracelet, a smart watch, a smart head display, smart glasses, etc. Figure 1 The electronic device 1000 in the illustrated embodiment is described by taking a mobile phone as an example.

[0063] Exemplarily, the electronic device 1000 may include a speaker 100, a device housing 200, and a display screen 300. The device housing 200 may include a frame 201 and a back cover 202, wherein the frame 201 is connected to the back cover 202 and is arranged around the back cover 202. The frame 201 is provided with a sound outlet 203. The number of the sound outlet 203 may be one or more. Figure 1 The number of the sound outlet holes 203 shown in the figure is multiple. In other embodiments, the sound outlet holes 203 can also be set in the back cover 202.

[0064] Exemplarily, the display screen 300 may be fixed to the frame 201. The display screen 300, the frame 201, and the back cover 202 may enclose the interior of the electronic device 1000. The display screen 300 may be an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode, or a liquid crystal display (LCD), etc.

[0065] Exemplarily, the speaker 100 may be located inside the electronic device 1000. Figure 1 The speaker 100 is indicated by a dotted line. The speaker 100 can play sound to the outside of the electronic device 1000 through the sound outlet 203. In other embodiments, the electronic device 1000 may also include multiple speakers 100, and the multiple speakers 100 can be used to emit sounds of multiple tracks to form stereo. It should be noted that Figure 1 Some components of the electronic device 1000 are shown schematically only, and the actual shapes and sizes of these components are not subject to Figure 1 It should be understood that when the electronic device 1000 is in other forms, the electronic device 1000 may not include the display screen 300 , or the electronic device 1000 may include multiple display screens 300 .

[0066] The above specifically introduces the relevant configuration of the speaker 100 in the electronic device 1000 , and the following will introduce the specific structure of the speaker 100 in conjunction with the relevant drawings.

[0067] Figure 2 yes Figure 1 The structure diagram of the speaker 100 of the electronic device 1000 shown in one embodiment. Figure 3 yes Figure 2 The illustrated schematic diagram is an exploded structural diagram of the speaker 100 in some embodiments.

[0068] like Figure 2 and Figure 3 As shown, the speaker 100 may include a housing 10, a vibration system 20, a magnetic circuit system 30, a circuit board 40, a support member 50, and an adjustment magnet 61. The vibration system 20 may include a diaphragm 21 and a voice coil 22. The magnetic circuit system 30 may include a first magnet 31, a second magnet 32, a first upper magnetic conductor 33, a second upper magnetic conductor 34, and a lower magnetic conductor 35.

[0069] Exemplarily, the materials of the first magnet 31 and the second magnet 32 ​​can all be hard magnetic materials, also known as permanent magnetic materials (permanent magnets) or permanent magnetic materials (permanent magnets), that is, the first magnet 31 and the second magnet 32 ​​are permanent magnets. It is understood that hard magnetic materials are permanent magnetic materials that can retain magnetism for a long time. For example, magnets, etc. The materials of the first upper magnetizer 33, the second upper magnetizer 34, and the lower magnetizer 35 can all be magnetic conductive materials.

[0070] In some implementations, the magnetic circuit system 30 may not include the lower magnetic conductor 35 .

[0071] Figure 4 yes Figure 2 The exploded structural diagram of the magnetic circuit system 30 is shown. Figure 5 yes Figure 4 The schematic diagram of the assembly structure of the magnetic circuit system 30 is shown. Figure 6 yes Figure 2 The illustrated diagram is a partial cross-sectional structural diagram of an embodiment of the loudspeaker 100 cut along AA.

[0072] like Figures 4 to 6 As shown, the magnetic circuit system 30 can be symmetrically arranged about the first axis T1. Among them, the second magnet 32 ​​can be arranged around the peripheral side surface of the first magnet 31. The second magnet 32 ​​can be arranged at intervals from the peripheral side surface of the first magnet 31. The first magnet 31 and the second magnet 32 ​​can both be symmetrically arranged about the first axis T1. The surface of the second magnet 32 ​​facing the peripheral side surface of the first magnet 31 is the inner peripheral side surface of the second magnet 32. The gap between the peripheral side surface of the first magnet 31 and the inner peripheral side surface of the second magnet 32 ​​is the first gap N1. The first magnet 31 and the second magnet 32 ​​can constitute the magnetic circuit component 30a of the magnetic circuit system 30.

[0073] Exemplarily, the first magnet 31 may be roughly in the shape of a rectangular disk. The peripheral side of the first magnet 31 may include a first side 311, a second side 312, a third side 313 and a fourth side 314. The first side 311 may be disposed opposite to the third side 313. The second side 312 may be disposed opposite to the fourth side 314. The second magnet 32 ​​may include a plurality of sub-magnets, for example, may include a first sub-magnet 321, a second sub-magnet 322, a third sub-magnet 323 and a fourth sub-magnet 324. The first sub-magnet 321, the second sub-magnet 322, the third sub-magnet 323 and the fourth sub-magnet 324 may all be in the shape of a long strip. The first sub-magnet 321 may face the first side 311 and be spaced apart from the first side 311. The second sub-magnet 322 may face the second side 312 and be spaced apart from the second side 312. The third sub-magnet 323 may face the third side 313 and be spaced apart from the third side 313. The fourth sub-magnet 324 may face the fourth side surface 314 and be spaced apart from the fourth side surface 314. The surface of the first sub-magnet 321 facing the first magnet 31, the surface of the second sub-magnet 322 facing the first magnet 31, the surface of the third sub-magnet 323 facing the first magnet 31, and the surface of the fourth sub-magnet 324 facing the first magnet 31 may together constitute at least a portion of the inner peripheral side surface of the second magnet 32.

[0074] like Figures 4 to 6 As shown, the first magnet 31 and the second magnet 32 ​​can be located on the same side of the lower magnet 35 and fixedly connected to the lower magnet 35. The lower magnet 35 can be symmetrically arranged about the first axis T1. The first upper magnet 33 can be fixedly connected to the surface of the first magnet 31 facing away from the lower magnet 35. The second upper magnet 34 can be fixedly connected to the surface of the second magnet 32 ​​facing away from the lower magnet 35. At this time, the second upper magnet 34 can surround the peripheral side surface of the first upper magnet 33 and be spaced apart from the peripheral side surface of the first upper magnet 33. The first upper magnet 33 and the second upper magnet 34 can be symmetrically arranged about the first axis T1. Among them, the surface of the second upper magnet 34 facing the first upper magnet 33 is the inner peripheral side surface of the second upper magnet 34. The magnetic gap between the peripheral side surface of the first upper magnet 33 and the inner peripheral side surface of the second upper magnet 34 is the second gap N2. The first upper magnetic conductor 33 and the second upper magnetic conductor 34 may constitute the upper magnetic conductor component 30b of the magnetic circuit system 30. The second gap N2 may constitute at least part of the magnetic gap of the upper magnetic conductor component 30b. That is, the first gap N1 and the second gap N2 may together constitute at least part of the magnetic gap of the magnetic circuit system 30.

[0075] Exemplarily, the shape of the first upper magnetic conductor 33 may be substantially the same as the shape of the first magnet 31. The second upper magnetic conductor 34 may include a first magnetic conductor 341, a second magnetic conductor 342, a third magnetic conductor 343, and a fourth magnetic conductor 344. The first magnetic conductor 341, the second magnetic conductor 342, the third magnetic conductor 343, and the fourth magnetic conductor 344 may be fixedly connected to the first sub-magnet 321, the second sub-magnet 322, the third sub-magnet 323, and the fourth sub-magnet 324 in a one-to-one correspondence. At this time, the surface of the first magnetic conductor 341 facing the first upper magnetic conductor 33, the surface of the second magnetic conductor 342 facing the first upper magnetic conductor 33, the surface of the third magnetic conductor 343 facing the first upper magnetic conductor 33, and the surface of the fourth magnetic conductor 344 facing the first upper magnetic conductor 33 may together constitute at least a portion of the inner peripheral side surface of the second upper magnetic conductor 34. In some embodiments, the second upper magnetic conductor 34 may also include four connecting portions. The four connection parts can be connected one by one between the first magnetic conductive part 341 and the second magnetic conductive part 342 , between the second magnetic conductive part 342 and the third magnetic conductive part 343 , between the third magnetic conductive part 343 and the fourth magnetic conductive part 344 , and between the fourth magnetic conductive part 344 and the first magnetic conductive part 341 .

[0076] In other embodiments, the first magnet 31 may also be in the shape of a disk. The second magnet 32 ​​may also be in the shape of a ring, that is, the second magnet 32 ​​may be an integrally formed structure. In this case, the first upper magnetic conductor 33 may also be in the shape of a disk. The second upper magnetic conductor 34 may also be in the shape of a ring, which is an integrally formed structure. It should be understood that the arrangement of the magnetic circuit component 30a of the magnetic circuit system 30 and the arrangement of the upper magnetic conductor component 30b are quite diverse, and the present application does not specifically limit the arrangement of the magnetic circuit component 30a and the upper magnetic conductor component 30b.

[0077] Figure 7 yes Figure 3 The support member 50 and the circuit board 40 are shown in a schematic exploded structure diagram. Figure 8 yes Figure 7 A schematic structural diagram of the assembly structure of the structure shown at another viewing angle.

[0078] like Figure 7 and Figure 8 As shown, the support member 50 may include a support body 51 and a fixing protrusion 52. The number of the fixing protrusions 52 may be multiple, for example, four. The four fixing protrusions 52 may be located on the same side of the support body 51 and fixedly connected to the support body 51. It should be noted that although the support member 50 is described as two parts in this embodiment, it does not affect the support member 50 being an integrally formed structure, that is, the support body 51 may be integrally formed with the fixing protrusion 52.

[0079] Exemplarily, the circuit board 40 can be fixed to the surface of the support body 51 facing the fixing protrusion 52. The circuit board 40 can be a hard circuit board 40, a soft circuit board 40, or a hard-soft circuit board 40. Exemplarily, the circuit board 40 can include a first sub-board 40a and a second sub-board 40b arranged at intervals. The first sub-board 40a can include a first connecting portion 41 and a second connecting portion 42. The second sub-board 40b can include a third connecting portion 43 and a fourth connecting portion 44.

[0080] Fig. 9 yes Figure 2 The illustrated diagram is a partial cross-sectional structural diagram of an embodiment of the loudspeaker 100 cut along AA. Fig.10 yes Figure 2 The structure schematic diagram of the assembly structure of the vibration system 20 and the adjustment magnet 61 from another perspective is shown.

[0081] like Fig. 9 and Fig.10 As shown, the diaphragm 21 can be a flat diaphragm, or a diaphragm with a folded ring structure. Exemplarily, the diaphragm 21 can be a diaphragm with a folded ring structure. Among them, the diaphragm 21 can include a vibration part 211 and a first folded ring part 212. The first folded ring part 212 can be fixedly connected to the outer peripheral edge of the vibration part 211. At least part of the first folded ring part 212 can be arched toward one side of the diaphragm 21 to form a folded ring structure. It should be understood that the outer peripheral edge of the vibration part 211 can be the outer peripheral side surface of the vibration part 211, or it can be a part of the vibration part 211 close to its outer peripheral side surface. In this embodiment, the outer peripheral edge of the vibration part 211 can be a part close to its outer peripheral side surface. The vibration part 211 and the first folded ring part 212 can be a split structure. In other embodiments, the outer peripheral edge of the vibration part 211 can be the outer peripheral side surface of the vibration part 211. That is, the first folded ring part 212 can be fixedly connected to the outer peripheral side surface of the vibration part 211. In some embodiments, the vibration portion 211 and the first folding ring portion 212 may be integrally formed, that is, the diaphragm 21 may be an integrally formed structure.

[0082] Exemplarily, the voice coil 22 may be roughly annular in structure. The voice coil 22 may be fixedly connected to the vibration portion 211 of the diaphragm 21. In the present embodiment, the first folded ring portion 212 may be arched along a side facing the voice coil 22. Exemplarily, the voice coil 22 may have a winding axis. The voice coil 22 may be formed by a wire or a plurality of wires being wound multiple times around the winding axis as a reference. In the present embodiment, the voice coil 22 may be wound around the winding axis and formed by being wound multiple times in a direction parallel to the winding axis. In other embodiments, the voice coil 22 may also be wound multiple times along a plane perpendicular to the winding axis.

[0083] Exemplarily, the adjustment magnet 61 may be a permanent magnet. The adjustment magnet 61 may be fixed to the side of the voice coil 22. The side of the voice coil 22 refers to the side of the voice coil 22 facing the voice coil hole (i.e., the inner peripheral side of the voice coil 22) or the side of the voice coil 22 facing away from the voice coil hole (i.e., the outer peripheral side of the voice coil 22). For example, the adjustment magnet 61 may be fixed to the inner peripheral side of the voice coil 22.

[0084] Exemplarily, the adjustment magnet 61 may be symmetrically arranged about the central axis of the voice coil 22. In this embodiment, the central axis of the voice coil 22 is also the winding axis of the voice coil 22. The adjustment magnet 61 may be symmetrically arranged about the central axis of the voice coil 22, or may be approximately symmetrical, for example, the distance error is within 0.1 mm and / or the angle error is within 5°.

[0085] Exemplarily, the adjustment magnet 61 may include a first part 611 and a second part 612. The first part 611 and the second part 612 may be symmetrically arranged about the central axis of the voice coil 22. The first part 611 and the second part 612 may be arranged at intervals, for example, the first part 611 and the second part 612 may be two independent and spaced permanent magnets. Alternatively, the first part 611 may also be connected to the second part 612, for example, the first part 611 may be connected to the second part 612, and together with the second part 612, form a ring-shaped permanent magnet. In this embodiment, the first part 611 and the second part 612 may be two independent permanent magnets. The shape and size of the first part 611 and the second part 612 may be exactly the same. The first part 611 and the second part 612 may both be roughly in the shape of a long strip. The first part 611 and the second part 612 may be fixed to the inner peripheral side of the voice coil 22 at intervals, and may be symmetrically arranged about the central axis of the voice coil 22.

[0086] In other embodiments, the first part 611 of the adjustment magnet 61 may also include a plurality of permanent magnets disposed at intervals. The second part 612 may also include a plurality of permanent magnets disposed at intervals.

[0087] Fig.11 yes Figure 3 The structure schematic diagram of the assembly structure of the vibration system 20, the adjustment magnet 61, the support member 50 and the circuit board 40 shown in another viewing angle. Fig.12 yes Figure 2 The illustrated diagram is a partial cross-sectional structural diagram of an embodiment of the loudspeaker 100 cut along AA.

[0088] like Fig.11 and Fig.12As shown, the diaphragm 21 can be fixedly connected to the support body 51 of the support member 50. Among them, the first folding ring portion 212 of the diaphragm 21 can be fixedly connected to the support body 51. The voice coil 22 and the adjustment magnet 61 can be located on the side of the diaphragm 21 facing the support member 50. At this time, the first connection portion 41, the second connection portion 42, the third connection portion 43 and the fourth connection portion 44 of the circuit board 40 can be electrically connected to the voice coil 22. In this way, external devices of the speaker 100 (such as a battery of the electronic device 1000, etc.) can transmit current signals to the voice coil 22 through the circuit board 40.

[0089] Fig.13 yes Figure 3 FIG. 1 is a schematic diagram of a partial structural assembly of a speaker 100 . Fig.14 yes Fig.13 A schematic diagram of the structure shown in another perspective. Fig.15a yes Figure 2 The cross-sectional structure diagram of the speaker 100 in one embodiment is shown in FIG. 1 , which is cut along the AA line. For ease of understanding, Fig.14 The diaphragm 21 and the housing 10 are hidden therein.

[0090] like Figure 13 to Figure 15a As shown, the surface of the support body 51 of the support member 50 facing the fixing protrusion 52 can be fixedly connected to the surface of the second upper magnetic conductor 34 facing away from the second magnet 32. The fixing protrusion 52 of the support member 50 can be fixedly connected to the lower magnetic conductor 35. At this time, the diaphragm 21 can be spaced apart from the first upper magnetic conductor 33 of the magnetic circuit system 30. The diaphragm 21 can also be spaced apart from the second upper magnetic conductor 34. The first connecting portion 41 of the circuit board 40 can be located between the first sub-magnet 321 and the second sub-magnet 322. The second connecting portion 42 of the circuit board 40 can be located between the first sub-magnet 321 and the fourth sub-magnet 324. The third connecting portion 43 of the circuit board 40 can be located between the second sub-magnet 322 and the third sub-magnet 323. The fourth connecting portion 44 of the circuit board 40 can be located between the third sub-magnet 323 and the fourth sub-magnet 324. In this way, the multiple connecting parts of the circuit board 40 (i.e., the first connecting part 41, the second connecting part 42, the third connecting part 43 and the fourth connecting part 44 in the present embodiment) can utilize the space between the multiple sub-magnets in the second magnet 32 ​​(i.e., the first sub-magnet 321, the second sub-magnet 322, the third sub-magnet 323 and the fourth sub-magnet 324 in the present embodiment), and the overall structure of the speaker 100 is more compact.

[0091] Exemplarily, a portion of the voice coil 22 may be located between the magnetic gaps of the magnetic circuit system 30, and a portion of the voice coil 22 may be located in the space between the diaphragm 21 and the magnetic circuit system 30. At this time, at least a portion of the adjustment magnet 61 fixed to the inner peripheral side of the voice coil 22 may be located between the voice coil 22 and the first upper magnetic conductor 33. That is, at least a portion of the adjustment magnet 61 may be located in the second gap N2 between the first upper magnetic conductor 33 and the second upper magnetic conductor 34. The central axis of the voice coil 22 may coincide with the first axis T1 of the magnetic circuit system 30. That is, the voice coil 22 may be symmetrically arranged about the first axis T1. The adjustment magnet 61 may also be symmetrically arranged about the first axis T1. At this time, the projection of the adjustment magnet 61 on the plane where the upper magnetic conductor component 30b is located may be symmetrically arranged about the center of the upper magnetic conductor component 30b. The center of the upper magnetic conductor component 30b may be located on the first axis T1. It should be noted that the plane where the upper magnetic conductive component 30 b is located may be a center plane where the upper magnetic conductive component 30 b is parallel to the diaphragm 21 .

[0092] Exemplarily, the housing 10 may include a top 11 and a frame 12. The frame 12 may be fixedly connected to the periphery of the top 11. The top 11 and the frame 12 may enclose an inner cavity 10a of the housing 10. The top 11 may be provided with a through hole 111. The through hole 111 may communicate with the inner cavity 10a. The vibration system 20 may be fixedly connected to the top 11 of the housing 10.

[0093] Exemplarily, the first folding ring portion 212 of the diaphragm 21 can be fixedly connected to the wall surface of the through hole 111 of the top 11. At least part of the diaphragm 21 can be exposed relative to the through hole 111 of the shell 10. At this time, the diaphragm 21 can close the through hole 111, so that the inner cavity 10a of the shell 10 can be isolated from the outside of the shell 10. In other embodiments, the shell 10 can also be provided with an air outlet. The inner cavity 10a of the shell 10 can be connected to the outside of the shell 10 through the air outlet.

[0094] Exemplarily, a portion of the voice coil 22 may be located in the through hole 111, and a portion of the voice coil 22 may be located in the inner cavity 10a. A portion of the support member 50 may be located in the through hole 111, and a portion of the support member 50 may be located in the inner cavity 10a. The adjustment magnet 61 and the magnetic circuit system 30 may both be located in the inner cavity 10a. In some embodiments, the first folding ring portion 212 of the diaphragm 21 may also be fixedly connected to the surface of the top 11 facing the inner cavity 10a. At this time, the voice coil 22, the support member 50, the adjustment magnet 61, and the magnetic circuit system 30 may all be located in the inner cavity 10a.

[0095] Fig.15b yes Fig.15a The structure shown hides the schematic cross-sectional structure of the housing 10 .

[0096] like Fig.15bAs shown, the polarity of the portion of the first magnet 31 facing the diaphragm 21 may be opposite to the polarity of the portion of the second magnet 32 ​​facing the diaphragm 21. The polarity of the portion of the first magnet 31 facing away from the diaphragm 21 may be opposite to the polarity of the portion of the second magnet 32 ​​facing away from the diaphragm 21. That is, the polarization direction of the first magnet 31 is opposite to the polarization direction of the second magnet 32. The polarization direction refers to the direction in which the N pole points to the S pole in the magnet. The polarity of the first upper magnetic conductor 33 is the same as the polarity of the portion of the first magnet 31 facing the diaphragm 21. The polarity of the second upper magnetic conductor 34 is the same as the polarity of the portion of the second magnet 32 ​​facing the diaphragm 21. The polarity of the portion of the adjusting magnet 61 facing the first upper magnetic conductor 33 is the same as the polarity of the portion of the first upper magnetic conductor 33 facing the adjusting magnet 61, that is, the two repel each other. The polarity of the portion of the adjusting magnet 61 facing the second upper magnetic conductor 34 is the same as the polarity of the portion of the second upper magnetic conductor 34 facing the adjusting magnet 61 , that is, the two repel each other. The polarization direction of the adjusting magnet 61 may be parallel to the diaphragm 21 .

[0097] Exemplarily, the adjustment magnet 61 may have a first end 61a and a second end 61b disposed opposite to each other in its polarization direction. The first end 61a is closer to the upper magnetic conductive component 30b relative to the second end 61b. The repulsive force generated by the first end 61a and the portion of the upper magnetic conductive component 30b facing the first end 61a is greater than the repulsive force generated by the second end 61b and the portion of the upper magnetic conductive component 30b facing the second end 61b. Taking the first part 611 of the adjustment magnet 61 as an example, the first part 611 is located between the first upper magnetic conductive body 33 and the second upper magnetic conductive body 34. The spacing between the first part 611 and the first upper magnetic conductive body 33 may be smaller than the spacing between the first part 611 and the second upper magnetic conductive body 34. At this time, the end of the first part 611 close to the first upper magnetic conductive body 33 may constitute the first end 61a of the first part 611. The end of the first part 611 facing away from the first upper magnetic conductive body 33 may constitute the second end 61b of the first part 611. That is, the first part 611 may have a first end 61a and a second end 61b disposed opposite to each other in its polarization direction. Similarly, the second part 612 may also have a first end 61a and a second end 61b disposed opposite to each other in its polarization direction, and the first end 61a is closer to the upper magnetic conductive component 30b relative to the second end 61b. In other words, the first end 61a of the adjustment magnet 61 in this embodiment is the end of the adjustment magnet 61 close to the first upper magnetic conductive body 33, and the second end 61b is the end of the adjustment magnet 61 close to the second upper magnetic conductive body 34.

[0098] It should be understood that when the adjustment magnet 61 may include a plurality of independent and spaced permanent magnets (i.e., the first part 611 and the second part 612 in this embodiment), each permanent magnet has a first end 61a and a second end 61b in its polarization direction. That is, the adjustment magnet 61 may have a plurality of first ends 61a and a plurality of second ends 61b. In some embodiments, the adjustment magnet 61 may also be an annular permanent magnet. At this time, the adjustment magnet 61 may have an annular first end 61a and an annular second end 61b. That is, the adjustment magnet 61 may also have only a first end 61a and a first second end 61b. For example, the spacing between the inner peripheral side of the adjustment magnet 61 and the first upper magnet 33 is smaller than the spacing between the outer peripheral side of the adjustment magnet 61 and the second upper magnet 34. At this time, the inner peripheral side of the adjustment magnet 61 may constitute the first end 61a, and the outer peripheral side of the adjustment magnet 61 may constitute the second end 61b.

[0099] In this embodiment, the polarity of the portion of the first magnet 31 facing the diaphragm 21 can be an N pole, and the polarity of the portion facing away from the diaphragm 21 can be an S pole. The polarity of the portion of the second magnet 32 ​​facing the diaphragm 21 can be an S pole, and the polarity of the portion facing away from the diaphragm 21 can be an N pole. At this time, the polarity of the first upper magnetic conductor 33 can be an N pole. The polarity of the second upper magnetic conductor 34 can be an S pole. The first end 61a of the adjustment magnet 61 can be an N pole. The second end 61b of the adjustment magnet 61 can be an S pole. It should be understood that Fig.15a The following figures only illustrate one embodiment of the magnetization method of the first magnet 31 and the second magnet 32. The first magnet 31 and the second magnet 32 ​​may also adopt other magnetization methods, such as Halbach array, etc., which is not specifically limited in the present application.

[0100] For example, when current is input to the voice coil 22, the voice coil 22 may be affected by the magnetic field force, and the voice coil 22 may generate an Ampere force parallel to the thickness direction of the diaphragm 21, and move along the direction to cut the magnetic flux lines. At this time, the voice coil 22 may push the diaphragm 21 to move back and forth along the direction. The voice coil 22 may also drive the adjustment magnet 61 to move back and forth along the direction. In other words, when current is input to the voice coil 22, the voice coil 22, the diaphragm 21, and the adjustment magnet 61 may move together in the same direction as a whole.

[0101] In some embodiments, the outer peripheral side of the first upper magnetic conductor 33 may be partially recessed inward to form a first avoidance groove 33a. The outer peripheral side of the first magnet 31 may be partially recessed inward to form a second avoidance groove 31a. The first avoidance groove 33a may be connected to the second avoidance groove 31a, and may be stacked with the second avoidance groove 31a in the thickness direction of the diaphragm 21. At least a portion of the adjustment magnet 61 may be located in the first avoidance groove 33a. When the voice coil 22 is energized and the adjustment magnet 61 moves with the voice coil 22, the adjustment magnet 61 may move in the first avoidance groove 33a and the second avoidance groove 31a. In this way, by providing the first avoidance groove 33a and the second avoidance groove 31a to avoid the adjustment magnet 61, the adjustment magnet 61 may also utilize the size space of the first upper magnetic conductor 33 and the first magnet 31, and the overall structure of the speaker 100 is more compact, which is conducive to realizing the miniaturization of the speaker 100.

[0102] In other embodiments, the adjusting magnet 61 may also be fixed to the outer peripheral side of the voice coil 22. In this case, the adjusting magnet 61 may be located between the outer peripheral side of the voice coil 22 and the inner peripheral side of the second magnetic conductor. The first avoidance groove 33a may be formed on the inner peripheral side of the second magnetic conductor. The second avoidance groove 31a may be formed on the inner peripheral side of the second magnet 32. The first end 61a of the adjusting magnet 61 may be the end of the adjusting magnet 61 close to the second upper magnetic conductor 34, and the second end 61b may be the end of the adjusting magnet 61 close to the first upper magnetic conductor 33.

[0103] Fig.16 yes Fig.14 The cross-sectional structure diagram of the voice coil 22 of the loudspeaker 100 is shown in FIG. 1 , when the voice coil 22 of the loudspeaker 100 is in a balanced position. Fig.17 yes Fig.14 The cross-sectional structure diagram of the voice coil 22 of the loudspeaker 100 shown is a schematic diagram of the cross-sectional structure at a certain moment when the first current is inputted. Fig.18 yes Fig.14 The cross-sectional structure diagram of the voice coil 22 of the loudspeaker 100 shown is a schematic diagram at a certain moment when the second current is inputted.

[0104] like Figures 16 to 18As shown, the first part 611 of the adjustment magnet 61 can be subjected to the repulsive force from the first upper magnet 33 and the repulsive force from the second upper magnet 34. The second part 612 of the adjustment magnet 61 can be subjected to the repulsive force from the first upper magnet 33 and the repulsive force from the second upper magnet 34. The above repulsive forces can be decomposed into a vertical component along the thickness direction of the speaker 100 and a horizontal component along the thickness direction perpendicular to the speaker 100. It can be understood that the projection of the adjustment magnet 61 on the plane where the upper magnetic conductive component 30b is located can be symmetrically arranged about the center of the upper magnetic conductive component 30b, so that the sum of the horizontal components of the repulsive force from the first upper magnet 33 and the second upper magnet 34 to the adjustment magnet 61 is 0. In order to simplify the description, unless otherwise specified, the following repulsive force, repulsive force, etc. all refer to the vertical component of the force, and its horizontal component is ignored.

[0105] Exemplarily, the second gap N2 between the first upper magnetic conductor 33 and the second upper magnetic conductor 34 may include a first space N21 and a second space N22 that are connected. The first space N21 and the second space N22 may be stacked along the thickness direction of the speaker 100. The first space N21 and the second space N22 may have the same shape and size. Figures 17 to 19 The first space N21 and the second space N22 are schematically framed by dotted lines. The interface between the first space N21 and the second space N22 is the first interface M1. At this time, the portion of the first part 611 of the adjustment magnet 61 that is located above the first interface M1 (that is, located in the first space N21) is the first upper magnetic portion 6111. The portion of the first part 611 of the adjustment magnet 61 that is located below the first interface M1 (that is, located in the second space N22) is the first lower magnetic portion 6112. That is, the first upper magnetic portion 6111 and the first lower magnetic portion 6112 can be stacked along the thickness direction of the speaker 100. The portion of the second part 612 of the adjustment magnet 61 that is located above the first interface M1 is the second upper magnetic portion 6121. The portion of the second part 612 of the adjustment magnet 61 that is located below the first interface M1 is the second lower magnetic portion 6122. That is, the second upper magnetic portion 6121 and the second lower magnetic portion 6122 can be stacked along the thickness direction of the diaphragm 21.

[0106] When no current is input to the voice coil 22 and the voice coil 22 is in a balanced position, the diaphragm 21 is not deformed. At this time, the elastic restoring force of the vibration system 20 itself is 0. The first upper magnetic part 6111 and the first lower magnetic part 6112 of the first part 611 of the adjustment magnet 61 can be symmetrically arranged about the first interface M1. The volume of the first upper magnetic part 6111 and the volume of the first lower magnetic part 6112 can be equal. The first upper magnetic part 6111 can be subjected to a first repulsive force f1 along the first direction from the first upper magnetic conductor 33 and the second upper magnetic conductor 34. The first lower magnetic part 6112 can be subjected to a second repulsive force f2 along the second direction from the first upper magnetic conductor 33 and the second upper magnetic conductor 34. Among them, the first direction can be the direction in which the voice coil 22 points to the diaphragm 21. The first direction can be parallel to the thickness direction of the diaphragm 21. The second direction is opposite to the first direction. The first repulsive force f1 and the second repulsive force f2 are equal in magnitude and opposite in direction. That is, the first repulsive force f1 and the second repulsive force f2 can cancel each other out.

[0107] At this time, the second upper magnetic part 6121 and the second lower magnetic part 6122 of the second part 612 can be symmetrically arranged about the first interface M1. The volume of the second upper magnetic part 6121 can be equal to the volume of the second lower magnetic part 6122. The second upper magnetic part 6121 can be subjected to the third repulsive force f3 along the first direction from the first upper magnet 33 and the second upper magnet 34. The second lower magnetic part 6122 can be subjected to the fourth repulsive force f4 along the second direction from the first upper magnet 33 and the second upper magnet 34. The third repulsive force f3 is equal to the fourth repulsive force f4 in magnitude and opposite in direction. That is, the third repulsive force f3 and the fourth repulsive force f4 can offset each other. At this time, the total repulsive force of the adjusting magnet 61 from the first upper magnet 33 and the second upper magnet 34 is 0. That is, the repulsive force of the upper magnetic component 30b on the adjusting magnet 61 is 0. At this time, the force of the adjusting magnet 61 on the vibration system 20 can be 0.

[0108] When the voice coil 22 inputs the first current, the voice coil 22 can move in the first direction and push the diaphragm 21 to move in the first direction. At this time, the adjustment magnet 61 can move in the first direction together with the voice coil 22. As the distance that the adjustment magnet 61 moves in the first direction gradually increases, the volume of the first upper magnetic part 6111 located above the first interface M1 in the first part 611 gradually increases, and the volume of the first lower magnetic part 6112 located below the first interface M1 gradually decreases. At the same time, the first repulsive force f1 on the first upper magnetic part 6111 gradually increases, and the second repulsive force f2 on the first lower magnetic part 6112 gradually decreases.

[0109] When the adjusting magnet 61 moves along the first direction with the voice coil 22 until the volume of the first upper magnetic part 6111 is greater than the volume of the first lower magnetic part 6112, the diaphragm 21 may bulge along the first direction and deform. At this time, the vibration system 20 itself has an elastic restoring force for resisting the vibration of the vibration system 20. The direction of the elastic restoring force is opposite to the direction in which the diaphragm 21 bulges (in this embodiment, that is, the direction of the elastic restoring force of the vibration system 20 is the second direction at this time). The first repulsive force f1 received by the first upper magnetic part 6111 may be greater than the second repulsive force f2 received by the first lower magnetic part 6112. At the same time, the volume of the second upper magnetic part 6121 may be greater than the volume of the second lower magnetic part 6122. The third repulsive force f3 received by the second upper magnetic part 6121 may be greater than the fourth repulsive force f4 received by the second lower magnetic part 6122. At this time, the total repulsive force on the adjusting magnet 61 from the first upper conductive magnet 33 and the second upper conductive magnet 34 (that is, the repulsive force of the upper conductive component 30b on the adjusting magnet 61) is the first magnetic repulsive force F1, and satisfies:

[0110] F1=f1-f2+f3-f4

[0111] The direction of the first magnetic repulsive force F1 is the first direction. The direction of the first magnetic repulsive force F1 is the same as the direction of movement of the voice coil 22 , and is opposite to the direction of the elastic restoring force of the vibration system 20 itself.

[0112] When the voice coil 22 inputs the second current, the voice coil 22 can move in the second direction and push the diaphragm 21 to move in the second direction. The second direction can be opposite to the first direction. The second direction can be parallel to the thickness direction of the diaphragm 21. At this time, the adjustment magnet 61 can move in the second direction together with the voice coil 22. As the distance moved by the adjustment magnet 61 in the second direction increases, the volume of the first upper magnetic part 6111 located above the first interface M1 in the first part 611 decreases, and the volume of the first lower magnetic part 6112 located below the first interface M1 increases. At the same time, the first repulsive force f1 on the first upper magnetic part 6111 decreases, and the second repulsive force f2 on the first lower magnetic part 6112 increases.

[0113] When the adjusting magnet 61 moves along the second direction with the voice coil 22 until the volume of the first upper magnetic part 6111 is smaller than the volume of the first lower magnetic part 6112, the diaphragm 21 may bulge along the second direction and deform. At this time, the vibration system 20 itself has an elastic restoring force, and the direction of the elastic restoring force is opposite to the direction in which the diaphragm 21 bulges (in this embodiment, that is, the direction of the elastic restoring force of the vibration system 20 is the first direction at this time). The first repulsive force f1 received by the first upper magnetic part 6111 may be smaller than the second repulsive force f2 received by the first lower magnetic part 6112. At the same time, the volume of the second upper magnetic part 6121 may be smaller than the volume of the second lower magnetic part 6122. The third repulsive force f3 received by the second upper magnetic part 6121 may be smaller than the fourth repulsive force f4 received by the second lower magnetic part 6122. At this time, the sum of the total repulsive force on the adjusting magnet 61 from the first upper conductive magnet 33 and the second upper conductive magnet 34 (that is, the repulsive force of the upper conductive component 30b on the adjusting magnet 61) is the second magnetic repulsive force F2, and satisfies:

[0114] F2=f2-f1+f4-f3

[0115] The direction of the second magnetic repulsion force F2 is the second direction. The direction of the second magnetic repulsion force F2 is the same as the direction of movement of the voice coil 22 and is opposite to the direction of the elastic restoring force of the vibration system 20 itself.

[0116] Fig.19 yes Fig.14 The figure is a schematic diagram of a simulation curve of the displacement of the voice coil 22 of the loudspeaker 100 and the repulsive force of the upper magnetic conductive component 30 b on the adjusting magnet 61 . Fig. 20 yes Fig.14 The schematic diagram of the simulation of the frequency response curve of the loudspeaker 100 and a general loudspeaker unit is shown. Wherein, when no current is input to the voice coil 22, that is, when the voice coil 22 is in a stationary state, the displacement of the voice coil 22 is 0. When the displacement of the voice coil 22 is positive, it means that the voice coil 22 moves in a first direction relative to its stationary state, and vice versa, it means that the voice coil 22 moves in a second direction relative to its stationary state. When the force exerted by the regulating magnet 61 on the vibration system 20 is positive, it means that the direction of the force is along the first direction, and vice versa, it means that the direction of the force is along the second direction. Wherein, Fig.19 Curve 1 represents a general speaker, and curve 2 represents Fig.15a A loudspeaker 100 is shown.

[0117] like Fig.19 and Fig. 20As shown, as the absolute value of the displacement of the voice coil 22 after the current is input, the absolute value of the total repulsive force on the adjusting magnet 61 also increases, and the absolute value of the force of the adjusting magnet 61 on the vibration system 20 increases. The displacement of the voice coil 22 and the total repulsive force on the adjusting magnet 61 can be roughly linear, that is, the displacement of the voice coil 22 and the force of the adjusting magnet 61 on the vibration system 20 can be roughly linear. Among them, the force of the adjusting magnet 61 on the vibration system 20 can be the total repulsive force on the adjusting magnet 61. The force of the adjusting magnet 61 on the vibration system 20 can be equivalent to an elastic component, and the elastic coefficient of the elastic component can be Km. The direction of the elastic force of the elastic component (that is, the repulsive force of the upper magnetic conductive component 30b on the adjusting magnet 61 in this embodiment) is opposite to the direction of the elastic restoring force of the vibration system 20.

[0118] It can be understood that the resonance frequency F0 of a general speaker unit can be:

[0119]

[0120] Wherein, Ks is the equivalent elastic coefficient of the elastic restoring force of the vibration system in the speaker unit. It can be seen from the above expression that the elastic restoring force of the vibration system will suppress the vibration of the diaphragm, resulting in a higher resonance frequency of the speaker unit and poor low-frequency performance of the speaker. The purpose of reducing the elastic restoring force of the vibration system itself can be achieved by reducing the equivalent elastic coefficient of the elastic restoring force by reducing the thickness of the folding ring structure of the diaphragm or selecting a material with a lower Young's modulus to prepare the folding ring structure of the diaphragm. However, the low equivalent elastic coefficient of the vibration system will cause the voice coil to easily deflect or tilt during movement, that is, polarization will occur, making the voice coil easy to rub against the magnetic circuit system during movement, affecting the normal operation of the speaker unit.

[0121] In the speaker 100 of the present embodiment, the adjusting magnet 61 is arranged on the side of the voice coil 22. When the voice coil 22 is in a balanced position, at least part of the adjusting magnet 61 can be located in the magnetic gap of the upper magnetic conductive component 30b (in the present embodiment, the adjusting magnet 61 can be located in the second gap N2 between the first upper magnetic conductive component 33 and the second upper magnetic conductive component 34). At the same time, the polarization direction of the adjusting magnet 61 is parallel to the diaphragm 21. The adjusting magnet 61 has a first end 61a and a second end 61b arranged opposite to each other in its polarization direction. The first end 61a is closer to the upper magnetic conductive component 30b than the second end 61b. A repulsive force is generated between the first end 61a and the upper magnetic conductive component 30b. In other words, the polarity of the first end 61a of the adjusting magnet 61 is the same as the polarity of the part of the upper magnetic conductive component 30b facing the first end 61a. The polarity of the second end 61b of the adjusting magnet 61 is the same as the polarity of the part of the upper magnetic conductive component 30b facing the second end 61b. (In this embodiment, the polarity of the portion of the adjusting magnet 61 facing the first upper magnet 33 is the same as the polarity of the portion of the first upper magnet 33 facing the adjusting magnet 61. The polarity of the portion of the adjusting magnet 61 facing the second upper magnet 34 is the same as the polarity of the portion of the second upper magnet 34 facing the adjusting magnet 61.) At this time, the adjusting magnet 61 can be subjected to the repulsive force from the upper magnetic conductive component 30b. As the absolute value of the displacement of the voice coil 22 relative to its equilibrium position increases, the absolute value of the total repulsive force on the adjusting magnet 61 also increases accordingly, and the two approximately satisfy a linear relationship, and the linearity of the two is relatively high. The direction of the total repulsive force on the adjusting magnet 61 is opposite to the direction of the elastic restoring force of the vibration system 20 itself. The total repulsive force on the adjusting magnet 61 can act on the vibration system 20. In this way, the force of the adjusting magnet 61 on the vibration system 20 (in this embodiment, the total repulsive force on the adjusting magnet 61) can be equivalent to an elastic component, and the elastic coefficient of the elastic component can be Km. At this time, the resonant frequency F0 of the speaker 100 can be:

[0122]

[0123] It can be seen from the above expression that when the total repulsive force on the adjustment magnet 61 in this embodiment acts on the vibration system 20, it can offset at least part of the elastic restoring force of the vibration system 20 itself in the speaker 100, thereby reducing the influence of the elastic restoring force of the vibration system 20 itself on the vibration of the diaphragm 21. In this way, under the condition that the thickness and material of the diaphragm 21 are exactly the same, the resonant frequency F0 of the speaker 100 in this embodiment is smaller, and the low-frequency performance of the speaker 100 is better. In other words, the speaker 100 in this embodiment can meet the stiffness requirements of the vibration system 20 itself while having good low-frequency performance, and the swing of the voice coil 22 is smaller when it moves.

[0124] Secondly, compared with the speaker in which the force applied to the adjusting magnet from the upper magnetic conductive component is an attractive force, the force applied to the adjusting magnet 61 from the first upper magnetic conductive component 33 and the second upper magnetic conductive component 34 is a repulsive force, thereby effectively avoiding the problem that when the distance between the adjusting magnet 61 and the first upper magnetic conductive component 33 or the second upper magnetic conductive component 34 is too close, the attractive force applied to the adjusting magnet 61 from the first upper magnetic conductive component 33 or the second upper magnetic conductive component 34 increases sharply, causing the adjusting magnet 61 to be adsorbed on the first upper magnetic conductive component 33 or the second upper magnetic conductive component 34, so that the voice coil 22 cannot move normally, which is conducive to ensuring the normal operation of the speaker 100. In other words, the distance between the adjusting magnet 61 and the first upper magnetic conductive component 33 and the second upper magnetic conductive component 34 in the present embodiment can be small, which is conducive to realizing the miniaturization of the speaker 100.

[0125] In addition, when the voice coil 22 is in a stationary state, compared to the first direction, the adjustment magnet 61 in this embodiment and the first upper conductive magnet 33 and the second upper conductive magnet 34 that provide repulsive force to the adjustment magnet 61 are arranged on the left, middle, and right. The arrangement direction of the three is perpendicular to the direction of movement of the voice coil 22 (that is, perpendicular to the first direction / second direction). In this way, when the voice coil 22 is energized and moves along the first direction or the second direction, the adjustment magnet 61 will not affect the amplitude of the voice coil 22, and the amplitude of the voice coil 22 is only limited by the distance between the voice coil 22 and other components of the speaker 100 in its direction of movement. In other words, the speaker 100 in this embodiment can achieve large amplitude and high power operation, which is conducive to improving the acoustic performance of the speaker 100.

[0126] In addition, the polarization direction of the adjusting magnet 61 in this embodiment is perpendicular to the first direction. Even if the adjusting magnet 61 moves along the second direction with the voice coil 22 and approaches the lower magnet 35, the forces exerted by the lower magnet 35 on the S pole and the N pole of the adjusting magnet 61 are equal in magnitude and opposite in direction, thereby effectively avoiding the lower magnet 35 from generating additional repulsive force or attractive force on the adjusting magnet 61, thereby affecting the normal operation of the speaker 100.

[0127] In some implementations, the inner cavity 10a of the speaker 100 may also be a closed space. In this case, the resonant frequency F0 of the speaker 100 may be:

[0128]

[0129] Wherein, Kb is the equivalent elastic coefficient of the air in the inner cavity 10a of the loudspeaker 100 and satisfies:

[0130]

[0131] Wherein, ρ is the air density, C is the air sound velocity, Sd is the vibration area of ​​the loudspeaker 100, and V is the volume of the inner cavity 10a. It can be seen from the above expression that the air in the inner cavity 10a can be equivalent to an elastic component. The air in the inner cavity 10a can generate an equivalent elastic force, and the direction of the elastic force is the same as the direction of the elastic restoring force of the vibration system 20. The loudspeaker 100 in this embodiment is provided with an adjustment magnet 61, and the adjustment magnet 61 can be subjected to a repulsive force from the upper magnetic conductive component 30b, and the direction of the repulsive force is opposite to the direction of the elastic restoring force of the vibration system 20. The adjustment magnet 61 applies the repulsive force to the vibration system 20, thereby offsetting at least part of the equivalent elastic force of the air in the inner cavity 10a of the loudspeaker 100, so as to reduce the influence of the equivalent elastic force of the air in the inner cavity 10a of the loudspeaker 100 on the movement of the diaphragm 21. In this way, under the condition that the size of the loudspeaker 100 is the same and the volume of the inner cavity 10a of the loudspeaker 100 is the same, the resonance frequency F0 of the loudspeaker 100 in this embodiment is smaller, and the low-frequency performance of the loudspeaker 100 is better. Under the condition that the resonance frequency F0 is the same, the volume of the inner cavity 10a of the loudspeaker 100 in this embodiment can be smaller, which is conducive to realizing the miniaturization of the loudspeaker 100. In other words, the loudspeaker 100 in this embodiment can meet the requirements of miniaturization while having better low-frequency performance.

[0132] In some embodiments, the size of the adjustment magnet 61 in the first direction may be larger than the size of the second gap N2 in the first direction. In this way, the size of the adjustment magnet 61 is larger, and the repulsive force of the adjustment magnet 61 from the first upper magnetic conductor 33 and the second upper magnetic conductor 34 is larger, so that the force of the adjustment magnet 61 on the vibration system 20 is increased, so that the elastic restoring force of the vibration system 20 of the speaker 100 can be offset to a greater extent, so that the speaker 100 can have better low-frequency performance.

[0133] Secondly, compared with the smaller size of the adjusting magnet 61, the repulsive force from the first upper conductive magnet 33 and the second upper conductive magnet 34 is smaller. When the displacement of the voice coil 22 moving along the first direction or the second direction is large, the adjusting magnet 61 is far away from the first upper conductive magnet 33 and the second upper conductive magnet 34, so that the total repulsive force from the first upper conductive magnet 33 and the second upper conductive magnet 34 to the adjusting magnet 61 is sharply reduced, so that the total repulsive force to the adjusting magnet 61 at this time does not satisfy a linear relationship with the displacement of the voice coil 22, and the linearity of the two is low. However, the size of the adjusting magnet 61 in the first direction in this embodiment is large, even if the displacement of the voice coil 22 moving along the first direction or the second direction is large, the distance between the adjusting magnet 61 and the first upper conductive magnet 33 and the second upper conductive magnet 34 is still close, so that the relationship between the total repulsive force from the first upper conductive magnet 33 and the second upper conductive magnet 34 to the adjusting magnet 61 and the displacement of the voice coil 22 can be closer to a linear relationship, and the linearity of the two is high. In other words, the speaker 100 in this embodiment increases the size of the adjustment magnet 61 in the first direction, so that even when the speaker 100 works at high power and large amplitude, the total repulsive force on the adjustment magnet 61 can still maintain a linear relationship with the displacement of the voice coil 22, and the linearity of the two is high. That is, the speaker 100 in this embodiment can meet the high power demand while improving the low-frequency performance.

[0134] In some other embodiments, in the first direction, the distance between the surface of the adjusting magnet 61 facing away from the diaphragm 21 and the diaphragm 21 is a first distance. The distance between the surface of the voice coil 22 facing away from the diaphragm 21 and the diaphragm 21 is a second distance. The first distance may be less than or equal to the second distance. In this way, in the first direction, the lower surface of the adjusting magnet 61 (i.e., the surface of the adjusting magnet 61 facing away from the diaphragm 21) will not exceed the lower surface of the voice coil 22 (i.e., the surface of the voice coil 22 facing away from the diaphragm 21), thereby preventing the adjusting magnet 61 from colliding with the lower magnetic conductor 35 when the voice coil 22 moves in the second direction, thereby affecting the normal operation of the speaker 100.

[0135] Fig.21 yes Fig.14 The illustrated diagram is a partial cross-sectional structural diagram of the loudspeaker 100 in another embodiment at another viewing angle.

[0136] like Fig.21 As shown, the structure of the speaker 100 in this embodiment is similar to Fig.14The structure of the loudspeaker 100 shown is roughly the same, and the same parts will not be repeated. The differences between the two will be described below. The first upper magnetic conductor 33 in this embodiment can be provided with a first avoidance hole 33b. The first avoidance hole 33b can be symmetrically arranged about the first axis T1. The first avoidance hole 33b can penetrate the surface of the first upper magnetic conductor 33 facing the diaphragm 21 and the surface of the first upper magnetic conductor 33 facing away from the diaphragm 21. The first magnet 31 can be provided with a second avoidance hole 31b. The second avoidance hole 31b can be symmetrically arranged about the first axis T1. At this time, the first magnet 31 and the first upper magnetic conductor 33 can both be roughly annular. The second avoidance hole 31b can be connected to the first avoidance hole 33b. The first avoidance hole 33b and the second avoidance hole 31b can be stacked along the first direction. The first avoidance hole 33b can constitute a part of the magnetic gap of the upper magnetic conductor component 30b. The loudspeaker 100 can also include a connecting bracket 62. The material of the connecting bracket 62 can be a non-magnetic material, such as plastic. The connecting bracket 62 can be symmetrically arranged about the first axis T1. The connecting bracket 62 can be fixed to the surface of the diaphragm 21 facing the first avoidance hole 33b. The end of the connecting bracket 62 facing away from the diaphragm 21 can be spaced apart from the lower magnetic conductor 35.

[0137] Exemplarily, at least a portion of the connecting bracket 62 may be located within the first avoidance hole 33b. The connecting bracket 62 may be spaced apart from the inner peripheral side of the first upper magnet 33. The adjusting magnet 61 may be fixed to the outer peripheral side of the connecting bracket 62. The adjusting magnet 61 may be symmetrically arranged about the first axis T1. The polarity of the portion of the adjusting magnet 61 facing the first upper magnet 33 may be the same as the polarity of the portion of the first upper magnet 33 facing the adjusting magnet 61. The polarity of the portion of the adjusting magnet 61 facing the connecting bracket 62 may be opposite to the polarity of the portion of the adjusting magnet 61 facing the first upper magnet 33.

[0138] It is understandable that, compared with fixing the adjustment magnet to the side of the voice coil, when the working power of the speaker is large, the current on the voice coil increases, causing the voice coil to heat up and the temperature to rise. As the temperature of the voice coil rises, the high temperature will cause the adjustment magnet in contact with the voice coil to demagnetize, so that the linearity between the total repulsive force on the adjustment magnet and the displacement of the voice coil is reduced, affecting the low-frequency performance of the speaker. In this embodiment, the adjustment magnet 61 is fixed to the connecting bracket 62 connected to the diaphragm 21, and avoidance holes are set in the first upper magnetic conductor 33 and the first magnet 31 to avoid the connecting bracket 62 and the adjustment magnet 61 fixed to the connecting bracket 62, so that the temperature of the adjustment magnet 61 due to the heating of the voice coil 22 can be effectively avoided, resulting in demagnetization, so that the speaker 100 can meet the high power requirements while still having good low-frequency performance.

[0139] In some embodiments, the end of the connecting bracket 62 facing away from the diaphragm 21 may be spaced apart from the first avoidance hole 33b. In this case, the adjusting magnet 61 may be fixed to the surface of the connecting bracket 62 facing away from the diaphragm 21. At least a portion of the adjusting magnet 61 may be located in the first avoidance hole 33b.

[0140] In some embodiments, the speaker 100 may not include the lower magnetic conductor 35. The surface of the first magnet 31 facing away from the diaphragm 21 and the surface of the second magnet 32 ​​facing away from the diaphragm 21 may also be fixedly connected to the housing 10 (please refer to the embodiment of the present invention). Fig.15a As shown). At this time, the housing 10 may also be provided with a third avoidance hole (not shown). The third avoidance hole may be connected to the second avoidance hole 31b. In this way, when the size of the adjusting magnet 61 in the first direction is large, the distance from the surface of the adjusting magnet 61 facing away from the diaphragm 21 to the diaphragm 21 is greater than the distance from the surface of the voice coil 22 facing away from the diaphragm 21 to the diaphragm 21, and the amplitude of the voice coil 22 is large, the third avoidance hole may avoid the adjusting magnet 61, thereby meeting the high-power working requirements while improving the low-frequency performance of the speaker 100.

[0141] Fig. 22 yes Fig.21 The shown figure is a schematic diagram of the cross-sectional structure of the loudspeaker 100 in yet another embodiment.

[0142] like Fig. 22 As shown, the structure of the speaker 100 in this embodiment is similar to Fig.21The structure of the loudspeaker 100 shown is roughly the same, and the same parts are not repeated. The difference is that the loudspeaker 100 in this embodiment can also include a first magnetic member 63, a second magnetic member 64 and a center bracket 65. The first magnetic member 63 and the second magnetic member 64 can constitute a magnetic assembly. The first magnetic member 63 can be fixedly connected to the surface of the diaphragm 21 facing the first avoidance hole 33b. The second magnetic member 64 can be fixedly connected to the surface of the lower magnet 35 facing the second avoidance hole 31b. The center bracket 65 can be connected between the first magnetic member 63 and the second magnetic member 64. Among them, the first magnetic member 63 and the second magnetic member 64 can both be soft magnets. The first magnetic member 63 and the second magnetic member 64 can be symmetrically arranged about the first axis T1. The adjustment magnet 61 can be fixedly connected to the surface of the diaphragm 21 facing the first avoidance hole 33b through the connecting bracket 62. The material of the center bracket 65 can be a non-magnetic material, such as plastic. At this time, the part of the adjustment magnet 61 facing the first upper magnet 33 can constitute the first end 61a of the adjustment magnet 61. The portion of the adjusting magnet 61 facing the center bracket 65 may constitute the second end 61b of the adjusting magnet 61. Exemplarily, the distance from the first magnetic member 63 to the second end 61b may be equal to the distance from the second magnetic member 64 to the second end 61b. It should be noted that the distance from the first magnetic member 63 to the second end 61b may be completely equal to the distance from the second magnetic member 64 to the second end 61b, or may be approximately equal, for example, the error range between the two is within 0.1 mm.

[0143] Exemplarily, the adjusting magnet 61 may be subjected to a first suction force from the first magnetic component 63, and a second suction force from the second magnetic component 64. That is, the magnetic component may generate an attractive force on the adjusting magnet 61. The above-mentioned suction forces may be decomposed into a vertical component along the thickness direction of the speaker 100 and a horizontal component along the thickness direction perpendicular to the speaker 100. It is understandable that the projection of the adjusting magnet 61 on the plane where the upper magnetic conductive component 30b is located may be symmetrically arranged about the center of the upper magnetic conductive component 30b, and the distance from the first magnetic component 63 to the second end 61b may be equal to the distance from the second magnetic component 64 to the second end 61b, so that the sum of the horizontal components of the suction force from the first magnetic component 63 and the second magnetic component 64 to the adjusting magnet 61 is 0. In order to simplify the description, unless otherwise specified, the following attractive force, suction force, etc. refer to the vertical component of the force, and the horizontal component thereof is ignored.

[0144] Exemplarily, when the voice coil 22 is not powered and is in a balanced position, the diaphragm 21 is not deformed. The elastic restoring force of the vibration system 20 is 0. In the first direction, the distance from the adjusting magnet 61 to the first magnetic component 63 is equal to the distance from the adjusting magnet 61 to the second magnetic component 64. The attractive forces from the first magnetic component 63 and the second magnetic component 64 to the adjusting magnet 61 can offset each other. At this time, the attractive force from the magnetic component to the adjusting magnet 61 is 0.

[0145] When the voice coil 22 inputs the first current, the voice coil 22 can move in the first direction and push the diaphragm 21 to move in the first direction. At this time, the adjusting magnet 61 can move in the first direction together with the voice coil 22. When the adjusting magnet 61 moves along the first direction with the voice coil 22 until the volume of the first upper magnetic part 6111 is greater than the volume of the first lower magnetic part 6112, the diaphragm 21 can deform along the first protrusion. At this time, the distance between the adjusting magnet 61 and the first magnetic part 63 is closer, and the distance between the adjusting magnet 61 and the second magnetic part 64 is farther. The first suction force received by the adjusting magnet 61 can be greater than the second suction force received by the adjusting magnet 61. At this time, the attraction force received by the adjusting magnet 61 from the magnetic component is the first magnetic attraction force F3, and the first magnetic attraction force F3 can be the difference between the first attraction force and the second attraction force. Among them, the direction of the first magnetic attraction force F3 is the first direction. The direction of the first magnetic attraction force F3 is the same as the direction of the first magnetic repulsion force F1, and is opposite to the direction of the elastic restoring force of the vibration system 20 itself.

[0146] When the voice coil 22 inputs the second current, the voice coil 22 can move in the second direction and push the diaphragm 21 to move in the second direction. At this time, the adjusting magnet 61 can move in the second direction with the voice coil 22. When the adjusting magnet 61 moves in the second direction with the voice coil 22 until the volume of the first upper magnetic part 6111 is smaller than the volume of the first lower magnetic part 6112, the diaphragm 21 can bulge in the second direction and deform. At this time, the distance between the adjusting magnet 61 and the first magnetic part 63 is farther, and the distance between the adjusting magnet 61 and the second magnetic part 64 is closer. The first suction force received by the adjusting magnet 61 can be less than the second suction force received by the adjusting magnet 61. At this time, the attraction force received by the adjusting magnet 61 from the magnetic component is the second magnetic attraction force F4, and the second magnetic attraction force F4 can be the difference between the second attraction force and the first attraction force. Among them, the direction of the second magnetic attraction force F4 is the second direction. The direction of the second magnetic attraction force F4 is the same as the direction of the second magnetic repulsion force F2, and is opposite to the direction of the elastic restoring force of the vibration system 20 itself.

[0147] It is understandable that when the amplitude of the voice coil is large, the displacement of the voice coil moving in the first direction or the second direction is large, and the distance between the adjusting magnet and the first upper magnetic conductor is far, the total repulsive force on the adjusting magnet will decrease sharply, so that the force of the adjusting magnet on the vibration system at this time does not satisfy the linear relationship with the displacement of the voice coil, and the linearity of the two is low. In this embodiment, by respectively providing the first magnetic member 63 and the second magnetic member 64 at both ends of the center bracket 65, the first magnetic member 63 and the second magnetic member 64 can generate an attractive force with the adjusting magnet 61. At this time, the force of the adjusting magnet 61 on the vibration system 20 can be the sum of the total repulsive force (that is, the repulsive force of the upper magnetic conductor component 30b) on the adjusting magnet 61 and the attractive force from the magnetic component on the adjusting magnet 61. In this way, even if the displacement of the voice coil 22 along the first direction or the second direction is large, the distance between the adjustment magnet 61 and the first upper magnet 33 is large, resulting in a sharp decrease in the total repulsive force on the adjustment magnet 61, and the total attractive force on the adjustment magnet 61 can compensate for the sharply reduced total repulsive force, so that the force of the adjustment magnet 61 on the vibration system 20 can still maintain a linear relationship with the displacement of the voice coil 22. That is, the speaker 100 in this embodiment can meet the high power demand while improving the low-frequency performance.

[0148] In some embodiments, the diaphragm 21 may further include a second folded ring portion 213. The vibration portion 211 of the diaphragm 21 may be roughly annular. The second folded ring portion 213 may connect the inner periphery of the vibration portion 211 and the first magnetic member 63. The second folded ring portion 213 may protrude relative to the vibration portion 211 in a direction away from the voice coil 22 to form a folded ring structure. In this way, compared to the diaphragm 21 not having the second folded ring portion 213, the first magnetic member 63 is directly fixedly connected to the vibration portion 211. In this embodiment, the vibration portion 211 of the diaphragm 21 may be indirectly connected to the first magnetic member 63 via the second folded ring portion 213, so that the vibration portion 211 is easy to vibrate, which is beneficial to improving the acoustic performance of the speaker 100.

[0149] In some embodiments, Fig.23 As shown, the first magnetic member 63 and the second magnetic member 64 can also be permanent magnets. The polarization direction of the first magnetic member 63 is opposite to the polarization direction of the second magnetic member 64, and both are parallel to the first direction. The polarity of the portion of the first magnetic member 63 facing the second magnetic member 64 is the same as the polarity of the portion of the adjustment magnet 61 facing the connecting bracket 62.

[0150] It should be noted that, in the absence of conflict, the features in the embodiments of the present application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0151] It should be noted that all the above drawings are illustrative illustrations of the present application and do not represent the actual size of the product. Moreover, the size ratio relationship between the components in the drawings is not intended to limit the actual product of the present application.

[0152] The above are only some implementation methods of the present application, and the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A loudspeaker (100), characterized in that: include: A vibration system (20) comprising a diaphragm (21) and a voice coil (22), wherein the voice coil (22) is fixed to the diaphragm (21); A magnetic circuit system (30) is arranged at a distance from the vibration system (20), the magnetic circuit system (30) comprising a magnetic circuit component (30a) and an upper magnetic conductive component (30b), the upper magnetic conductive component (30b) being located on a side of the magnetic circuit component (30a) close to the vibration membrane (21) and fixedly connected to the magnetic circuit component (30a); An adjusting magnet (61) is fixed to the vibration system (20), at least a portion of the adjusting magnet (61) is located in the magnetic gap of the upper magnetic conductive component (30b), the adjusting magnet (61) has a first end (61a) and a second end (61b) arranged opposite to each other, the first end (61a) is closer to the upper magnetic conductive component (30b) relative to the second end (61b), the first end (61a) generates a repulsive force with a portion of the upper magnetic conductive component (30b) facing the first end (61a), and the second end (61b) generates a repulsive force with a portion of the upper magnetic conductive component (30b) facing the second end (61b).

2. The loudspeaker (100) according to claim 1, characterized in that The size of the adjusting magnet (61) in a first direction is greater than the size of the magnetic gap of the upper magnetic conductive component (30b) in the first direction, and the first direction is along the thickness direction of the diaphragm (21).

3. The loudspeaker (100) according to claim 1 or 2, characterized in that: The distance between the surface of the adjusting magnet (61) facing away from the diaphragm (21) and the diaphragm (21) is a first distance, the distance between the surface of the voice coil (22) facing away from the diaphragm (21) and the diaphragm (21) is a second distance, and the first distance is less than or equal to the second distance.

4. The loudspeaker (100) according to any one of claims 1 to 3, characterized in that: The upper magnetic conductive component (30b) comprises a first upper magnetic conductive body (33) and a second upper magnetic conductive body (34), wherein the second upper magnetic conductive body (34) surrounds the first upper magnetic conductive body (33) and is spaced apart from the first upper magnetic conductive body (33), and the gap between the first upper magnetic conductive body (33) and the second upper magnetic conductive body (34) constitutes at least a part of the magnetic gap of the upper magnetic conductive component (30b); The adjusting magnet (61) is fixedly connected to the side surface of the voice coil (22), and at least a portion of the adjusting magnet (61) is located between the first upper magnetic conductor (33) and the second upper magnetic conductor (34), and the portion of the adjusting magnet (61) facing the first upper magnetic conductor (33) repels the portion of the first upper magnetic conductor (33) facing the adjusting magnet (61).

5. The loudspeaker (100) according to claim 4, characterized in that: The adjusting magnet (61) comprises a first part (611) and a second part (612) which are arranged at intervals, wherein the first part (611) and the second part (612) are both fixedly connected to the side of the voice coil (22) facing the first upper magnetic conductor (33), or the first part (611) and the second part (612) are both fixedly connected to the side of the voice coil (22) facing the second upper magnetic conductor (34).

6. The loudspeaker (100) according to claim 5, characterized in that The upper magnetic conductive component (30b) is provided with a first avoidance groove (33a), the opening of the first avoidance groove (33a) faces the adjustment magnet (61), and at least a part of the adjustment magnet (61) is located in the first avoidance groove (33a).

7. The loudspeaker (100) according to any one of claims 1 to 3, characterized in that: The upper magnetic conductive component (30b) comprises a first upper magnetic conductive body (33) and a second upper magnetic conductive body (34); the second upper magnetic conductive body (34) surrounds the first upper magnetic conductive body (33) and is spaced apart from the first upper magnetic conductive body (33); the first upper magnetic conductive body (33) has a first avoidance hole (33b); the first avoidance hole (33b) penetrates a surface of the first upper magnetic conductive body (33) facing the diaphragm (21) and a surface of the first upper magnetic conductive body (33) facing away from the diaphragm (21); the first avoidance hole (33b) constitutes a part of the magnetic gap of the upper magnetic conductive component (30b); The loudspeaker (100) further comprises a connecting bracket (62), wherein the connecting bracket (62) is located on the inner side of the voice coil (22) and is fixedly connected to the diaphragm (21), and the adjusting magnet (61) is fixedly connected to the connecting bracket (62); At least part of the adjusting magnet (61) is located in the first avoidance hole (33b), and the part of the adjusting magnet (61) facing the first upper magnetic conductor (33) repels the part of the first upper magnetic conductor (33) facing the adjusting magnet (61).

8. The loudspeaker (100) according to claim 7, characterized in that: The loudspeaker (100) further comprises a lower magnetic conductor (35), a central support (65), a first magnetic component (63) and a second magnetic component (64); the lower magnetic conductor (35) is fixedly connected to a surface of the magnetic circuit component (30a) facing away from the upper magnetic circuit component (30b); the magnetic circuit component (30a) is provided with a second avoidance hole (31b); the second avoidance hole (31b) is connected to the first avoidance hole (33b); at least a portion of the lower magnetic conductor (35) is exposed relative to the second avoidance hole (31b); The first magnetic member (63) is fixedly connected to the diaphragm (21), the second magnetic member (64) is fixedly connected to the surface of the lower magnetic conductor (35) facing the second avoidance hole (31b), the central bracket (65) is connected between the first magnetic member (63) and the second magnetic member (64), and at least a portion of the adjustment magnet (61) is located between the first upper magnetic conductor (33) and the central bracket (65); The first magnetic member (63) generates an attractive force with the adjusting magnet (61), and the second magnetic member (64) generates an attractive force with the adjusting magnet (61).

9. The loudspeaker (100) according to claim 8, characterized in that: The first magnetic member (63) is a soft magnet; Alternatively, the first magnetic member (63) is a permanent magnet, the polarization direction of the first magnetic member (63) is parallel to the thickness direction of the diaphragm (21), and the polarity of the portion of the first magnetic member (63) facing the center bracket (65) is opposite to the polarity of the portion of the adjusting magnet (61) facing the center bracket (65).

10. The loudspeaker (100) according to claim 8 or 9, characterized in that: The distance from the first magnetic member (63) to the second end (61b) of the adjusting magnet (61) is equal to the distance from the second magnetic member (64) to the second end (61b) of the adjusting magnet (61).

11. The loudspeaker (100) according to claim 9 or 10, characterized in that: The diaphragm (21) comprises a vibration part (211) and a folding ring part, the vibration part (211) is ring-shaped, and the folding ring part connects the inner periphery of the vibration part (211) and the first magnetic part (63).

12. The loudspeaker (100) according to any one of claims 7 to 11, characterized in that: The connecting bracket (62) is made of a non-magnetic material.

13. The loudspeaker (100) according to any one of claims 1 to 12, characterized in that: The projection of the adjusting magnet (61) on the plane where the upper magnetic conductive component (30b) is located is arranged symmetrically with respect to the center of the upper magnetic conductive component (30b).

14. The loudspeaker (100) according to any one of claims 1 to 13, characterized in that: When no current is input to the voice coil (22), the force exerted by the adjusting magnet (61) on the vibration system (20) is 0; when current is input to the voice coil (22), the direction of the force exerted by the adjusting magnet (61) on the vibration system (20) is opposite to the direction of the elastic restoring force of the vibration system (20) itself.

15. An electronic device (1000), characterized in that: The invention comprises a device housing (200) and a loudspeaker (100) according to any one of claims 1 to 14, wherein the loudspeaker (100) is arranged inside the device housing (200).

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