Loudspeaker module and electronic equipment

Abstract

The invention provides a loudspeaker module and electronic equipment, the loudspeaker module comprises a first loudspeaker and a second loudspeaker, the first loudspeaker comprises a first magnetic circuit assembly, a first voice coil and a first diaphragm assembly, and the first magnetic circuit assembly comprises a first magnetic conductive yoke and a first magnet; the first voice coil is arranged around the first magnet and is connected with the first diaphragm assembly; the second loudspeaker and the first loudspeaker are reversely stacked, the second loudspeaker comprises a second magnetic circuit assembly, a second voice coil and a second vibrating diaphragm assembly, the second magnetic circuit assembly comprises a second magnetic conductive yoke and a second magnet, and the second voice coil is arranged around the second magnet and connected with the second vibrating diaphragm assembly; the first magnet and the second magnet are consistent in magnetic circuit magnetic pole direction. The loudspeaker module forms a magnetic current loop, the magnetic fields of the first magnet and the second magnet are mutually superposed, the magnetic flux density is increased, and the magnetic circuit utilization efficiency of the loudspeaker module is improved.

Description

Speaker modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on August 31, 2022, with application number 202211053374.0 and application name “Speaker Module and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of loudspeakers, and in particular to a loudspeaker module and an electronic device. Background Art

[0003] The demand for bass in electronic devices such as computers and mobile phones is getting higher and higher. In order to meet the low-frequency response, the amplitude of the speaker is designed to be larger and larger. In this case, the vibration of the speaker's voice coil and diaphragm will stimulate the vibration of the keyboard, which not only affects the user experience, but in severe cases it can even resonate with the entire machine structure and produce obvious noise. The existence of this vibration also limits the enhancement of the bass. In order to reduce the vibration force output of the speaker and improve the bass capability at the same time, two identical speakers are often connected back to back to form a speaker module. Since the vibration directions of the two identical speakers are opposite, the overall vibration is canceled out. However, due to the mutual influence of the magnets in the two speakers, the magnetic circuit efficiency of each speaker is reduced compared to when they are not assembled into one, which affects the sound effect.

[0004] Summary of the Invention

[0005] The present application provides a speaker module and an electronic device, which solve the problem of reduced magnetic circuit efficiency affecting sound quality in existing speaker modules.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, a speaker module is provided, comprising a first speaker and a second speaker, the first speaker comprising a first magnetic circuit assembly, a first voice coil and a first diaphragm assembly, the first magnetic circuit assembly comprising a first magnetic yoke and a first magnet, the first diaphragm assembly and the first magnetic yoke are jointly arranged to form a first accommodation space, the first magnet and the first voice coil are located in the first accommodation space, the first voice coil is arranged around the first magnet and is connected to the first diaphragm assembly; the second speaker is stacked in reverse to the first speaker, the second speaker comprising a second magnetic circuit assembly, a second voice coil and a second diaphragm assembly, the second magnetic circuit assembly comprising a second magnetic yoke and a second magnet, the second diaphragm assembly and the second magnetic yoke are jointly arranged to form a second accommodation space, the second magnet and the second voice coil are located in the second accommodation space, the second voice coil is arranged around the second magnet and is connected to the second diaphragm assembly; wherein the magnetic circuit pole directions of the first magnet and the second magnet are consistent. In this way, the first speaker and the second speaker of the speaker module jointly form a magnetic flow circuit, the magnetic fields of the first magnet and the second magnet are superimposed on each other, and the magnetic field strength of the first speaker and the second speaker is increased compared to when the two are used separately. The magnetic flux density of the speaker module in the first magnetic gap and the second magnetic gap is increased. Compared with the current speaker module in which the magnetic circuit poles of the first magnet and the second magnet are set in opposite directions, the speaker module in this application has a greater driving strength for the first diaphragm assembly and the second diaphragm assembly, which improves the magnetic circuit utilization efficiency of the speaker module. At the same power, the speaker module has stronger driving force and better performance.

[0008] In one embodiment of the first aspect, the first speaker further comprises a first central magnetic yoke, the first central magnetic yoke and the first magnetically conductive yoke jointly clamping the first magnet, the first central magnetic yoke being configured to constrain magnetic flux lines emitted from a first top surface of the first magnet and direct such flux lines to be emitted from an edge of the first central magnetic yoke, thereby increasing the magnetic flux density acting on the first voice coil. The second speaker further comprises a second central magnetic yoke, the second central magnetic yoke and the second magnetically conductive yoke jointly clamping the second magnet, the second central magnetic yoke being configured to constrain magnetic flux lines emitted from a second top surface of the second magnet and direct such flux lines to be emitted from an edge of the second central magnetic yoke, thereby increasing the magnetic flux density acting on the second voice coil.

[0009] In one embodiment of the first aspect, the first speaker further comprises a first support frame connected between the first diaphragm assembly and the first magnetically conductive yoke. The first speaker in this embodiment increases the distance between the first diaphragm assembly and the first magnetic gap, providing a larger space for the installation of the first voice coil. The first voice coil can use a longer coil disk to increase the coil's induced magnetic field, thereby increasing the amplitude of the first diaphragm assembly. The second speaker further comprises a second support frame connected between the second diaphragm assembly and the second magnetically conductive yoke. The second speaker in this embodiment increases the distance between the second diaphragm assembly and the second magnetic gap, providing a larger space for the installation of the second voice coil. The second voice coil can use a longer coil disk to increase the coil's induced magnetic field, thereby increasing the amplitude of the second diaphragm assembly.

[0010] In one embodiment of the first aspect, the first magnetic conductive yoke, the first magnetic circuit assembly, the first voice coil, the first diaphragm assembly, the second magnetic conductive yoke, the second magnetic circuit assembly, the second voice coil and the second diaphragm assembly are arranged on the same center line so that the magnetic field strength at the first voice coil and the second voice coil is greater.

[0011] In one embodiment of the first aspect, the first magnetically conductive yoke includes a first support portion and a first edge portion connected to the first support portion, the first edge portion being arranged at an angle to the first support portion, the first edge portion being arranged around the first magnet, the first magnet being connected to the first support portion, a first magnetic gap being formed between the first magnet and the first edge portion, and the first voice coil at least partially extending into the first magnetic gap. The second magnetically conductive yoke includes a second support portion and a second edge portion connected to the second support portion, the second edge portion being arranged at an angle to the second support portion, the second edge portion being arranged around the second magnet, the second magnet being connected to the second support portion, a second magnetic gap being formed between the second magnet and the second edge portion, and the second voice coil at least partially extending into the second magnetic gap. The first and second support portions are configured to confine magnetic lines of force between the first and second magnets, and the first and second edge portions are configured to confine the magnetic lines of force within the first and second magnetic gaps, and to ensure that the magnetic circuit passes through the first and second edge portions sequentially, thereby reducing magnetic field loss.

[0012] In an embodiment of the first aspect, a width of the first magnetic gap is the same as a width of the second magnetic gap, so that a driving force acting on the first voice coil and a driving force acting on the second voice coil are the same.

[0013] In one embodiment of the first aspect, the first magnet has four first sides, which surround the first magnet. The first edge portion includes four first subsections, which surround the first magnet and are spaced apart from each other. Each first subsection is parallel to one of the first sides, and the first magnetic gap is formed between each first subsection and the corresponding first side. In this case, the first subsections can be formed by bending a cross-shaped flat edge to facilitate processing. The spaced apart first subsections increase the density of magnetic flux lines gathered by each first subsection, thereby increasing the magnetic flux density acting on the local area of ​​the first voice coil. The second magnet has four first sides, which surround the second magnet. The second edge portion includes four second subsections, which surround the second magnet and are spaced apart from each other. Each second subsection is parallel to two of the first sides, and the second magnetic gap is formed between each second subsection and the corresponding first side. In this case, the second subsections can be formed by bending a cross-shaped flat edge to facilitate processing. The spaced apart second subsections increase the density of magnetic flux lines gathered by each second subsection, thereby increasing the magnetic flux density acting on the second voice coil.

[0014] In one embodiment of the first aspect, the first magnetic circuit assembly further comprises a first edge magnetic structure, the first edge magnetic structure being disposed within the first accommodating space and surrounding the first magnet, the magnetic circuit pole direction of the first edge magnetic structure being opposite to the magnetic circuit pole direction of the first magnet, and a first magnetic gap being formed between the first edge magnetic structure and the first magnet; the second magnetic circuit assembly further comprises a second edge magnetic structure, the second edge magnetic structure being disposed within the second accommodating space and surrounding the second magnet, the magnetic circuit pole direction of the second edge magnetic structure being opposite to the magnetic circuit pole direction of the second magnet, and a second magnetic gap being formed between the second edge magnetic structure and the second magnet, the magnetic circuit pole directions of the first edge magnetic structure and the second edge magnetic structure being opposite. The first edge magnetic structure and the second edge magnetic structure can provide an external magnetic field for the speaker module, thereby enhancing the magnetic field strength in the magnetic circuit formed by the speaker module, thereby further increasing the driving force for the vibration of the first diaphragm assembly and the second diaphragm assembly.

[0015] In one embodiment of the first aspect, the first edge magnet structure includes a plurality of first edge magnets, each of which is disposed within the first accommodating space and arranged circumferentially around the first magnet; and the second edge magnet structure includes a plurality of second edge magnets, each of which is disposed within the second accommodating space and arranged circumferentially around the second magnet. The provision of the plurality of first edge magnets and the plurality of second edge magnets facilitates the processing of the first edge magnet structure and the second edge magnet structure, and provides greater flexibility in quantity selection.

[0016] In an embodiment of the first aspect, the first speaker and the second speaker are spaced apart, and there is no need to connect the first speaker and the second speaker, thereby avoiding the introduction of reliability issues such as falling, assembly collision, etc., thereby reducing the installation accuracy requirements of the first speaker and the second speaker, thereby reducing the assembly difficulty, realizing rapid assembly of the speaker module, and avoiding the introduction of new process costs.

[0017] In an embodiment of the first aspect, the first speaker abuts the second speaker to reduce the distance between the first magnet and the second magnet, thereby increasing the superposition effect of the magnetic fields between the first magnet and the second magnet.

[0018] In an embodiment of the first aspect, the speaker module also includes a third magnet arranged between the first speaker and the second speaker, the magnetic circuit pole direction of the third magnet is consistent with the magnetic circuit pole direction of the first magnet and the second magnet, the third magnet provides an external magnetic field for the first speaker and the second speaker, and the magnetic lines of force of the third magnet are superimposed on the magnetic circuits in the first speaker and the second speaker. Compared with the embodiment without the third magnet, the speaker module in this embodiment enhances the magnetic flux density in the first magnetic gap and the second magnetic gap, thereby increasing the driving force on the first voice coil and the second voice coil, and further increasing the amplitude of the first diaphragm assembly and the second diaphragm assembly.

[0019] In one embodiment of the first aspect, the third magnet is connected to at least one of the first speaker and the second speaker. For example, the third magnet is connected to the first speaker and spaced apart from the second speaker, or the third magnet is connected to the second speaker and spaced apart from the first speaker. In this way, there is no need to set a connection between the first speaker and the second speaker. It is sufficient to set the third magnet on the first speaker or the second speaker, avoiding the introduction of reliability issues and reducing assembly difficulty. The third magnet can also be connected to both the first speaker and the second speaker to reduce the distance between the first magnet and the second magnet, thereby enhancing the magnetic field strength of the speaker module.

[0020] In an embodiment of the first aspect, the first support portion defines a first avoidance groove on a side facing the second support portion, and the third magnet is at least partially accommodated in the first avoidance groove to reduce the distance between the first magnet and the second magnet.

[0021] In an embodiment of the first aspect, the first avoidance groove is a through groove, and the third magnet is connected to the first magnet so that the magnetic lines of force of the third magnet are directly connected to the magnetic lines of force of the first magnet, while further reducing the distance between the first magnet and the second magnet.

[0022] In an embodiment of the first aspect, the second support portion is provided with a second avoidance groove on a side facing the second support portion, and the third magnet is at least partially accommodated in the second avoidance groove to reduce the distance between the first magnet and the second magnet.

[0023] In an embodiment of the first aspect, the second avoidance groove is a through groove, and the third magnet is connected to the second magnet so that the magnetic lines of force of the third magnet are directly connected to the magnetic lines of force of the second magnet, while further reducing the distance between the first magnet and the second magnet.

[0024] In a second aspect, an electronic device is provided, comprising the speaker module as described in the above embodiments. By providing the above speaker module, the electronic device reduces the noise generated on the keyboard and improves the sound effect of the electronic device.

[0025] In an embodiment of the second aspect, the electronic device is a laptop computer, which includes a shell, a middle plate and a keyboard, the middle plate is arranged in the shell, the keyboard and the speaker module are fixedly connected to the middle plate, the first speaker and the second speaker emit sound toward the front and back of the middle plate respectively, so as to drive the first diaphragm assembly and the second diaphragm assembly to vibrate synchronously in opposite directions, so that the first speaker and the second speaker offset each other at least partially, so as to reduce the vibration of the middle frame to a certain extent, and thereby reduce the generation of noise on the keyboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a simulation diagram of the magnetic circuit when the current speaker is used alone;

[0027] FIG2 is a magnetic circuit simulation diagram of the current speaker module;

[0028] FIG3 is a three-dimensional structural diagram of a speaker module and a mid-plate assembled according to an embodiment of the present application;

[0029] FIG4 is a three-dimensional structural diagram of a speaker module provided in an embodiment of the present application;

[0030] FIG5 is a partial exploded view of the speaker module and the mid-plate in FIG3 ;

[0031] FIG6 is a cross-sectional view of the speaker module in FIG4 ;

[0032] FIG7 is an exploded view of the speaker module in FIG4 ;

[0033] Figures 8, 10, 11, 12, 13, 14, and 15 are partial cross-sectional views of the speaker module in different embodiments;

[0034] FIG. 9 is a magnetic circuit simulation diagram of the speaker module in FIG. 8 . DETAILED DESCRIPTION

[0035] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0036] In the description of this application, it should be understood that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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 should not be understood as a limitation on this application.

[0037] To facilitate a clear description of the technical solutions of the embodiments of the present application, the words "first" and "second" are used in the embodiments of the present application to distinguish between identical or similar items with substantially the same functions and effects. For example, the first and second limiting portions are merely used to distinguish between different limiting portions and do not define their order. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or execution order, and the words "first" and "second" do not necessarily indicate differences.

[0038] It should be noted that, in this application, words such as "in one embodiment" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this application as "in one embodiment" or "for example" should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "in one embodiment" or "for example" is intended to present the relevant concepts in a concrete manner.

[0039] In this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0041] With the advancement of speaker technology, people's demand for bass in electronic devices such as computers and mobile phones is increasing. To meet low-frequency response requirements, speakers are being designed with increasingly larger amplitudes. Current speakers include a diaphragm assembly, a voice coil 20' fixedly connected to the diaphragm assembly, a magnetic circuit assembly 10' positioned on one side of the voice coil 20' of the diaphragm assembly, and a bracket for connecting the diaphragm assembly and the magnetic circuit assembly 10'. The magnetic circuit assembly 10' forms a magnetic circuit (as shown in Figure 1). When energized, the voice coil 20' generates an induced magnetic field. Under the magnetic force of the magnetic circuit assembly 10', it displaces. The displacement of the voice coil 20' drives the diaphragm assembly to vibrate, thereby driving air vibrations to form sound waves, allowing the speaker to produce sound. For example, a laptop speaker is mounted on the middle plate inside the keyboard-side housing of the laptop. When the speaker is operating, the vibration of the diaphragm assembly stimulates the keyboard to vibrate through the middle plate, which can easily cause the keyboard keys to resonate. When the keys resonate, they can collide with other structures in the housing, generating noise. This noise affects the speaker's sound quality and limits the enhancement of the bass. In order to reduce the output of the speaker's vibration force and improve the bass capability at the same time, two identical finished speakers are often installed directly opposite to each other on the middle plate to form a speaker module. When the speaker module is working, since the diaphragm assemblies of the two finished speakers are oriented in opposite directions, the vibration directions of the diaphragm assemblies on the two finished speakers are also opposite, so that the vibrations generated by the two speakers cancel each other out, thereby weakening the vibration of the keyboard and reducing the generation of noise. However, since the magnetic poles of the two magnets in the speaker module are in opposite directions, the speaker module will form two symmetrical magnetic line loops. The magnetic fields of the two magnetic circuit assemblies 10" affect each other, resulting in some magnetic lines of force being canceled out. The magnetic flux of each finished speaker acting on the voice coil 20" (such as area B in Figure 2) is reduced compared to when the finished speaker is used alone (such as area A in Figure 1), resulting in a decrease in the magnetic circuit efficiency of each finished speaker compared to when they are not assembled into one, affecting the sound effect.

[0042] To address the aforementioned issues, the present application provides a speaker module 100 and an electronic device. Compared to existing speaker modules 100 formed by directly docking two identical speakers in reverse, this speaker module 100 increases the magnetic flux density in the magnetic gap, thereby increasing the magnetic field strength acting on the voice coil, thereby improving the efficiency of the magnetic circuit. This electronic device is a type of electronic device that includes this speaker module 100. By replacing existing standalone speakers with the speaker module 100 described in this application, the noise generated by vibration is reduced.

[0043] Specifically, the electronic device includes, but is not limited to, a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a personal computer, a notebook computer, a vehicle-mounted device, and a wearable device. In the following embodiments, the electronic device is described as a laptop computer.

[0044] This electronic device includes a display and a keyboard host. The display is used to display images, videos, etc. The keyboard host is rotatably connected to the display. The keyboard host is used to input commands and data and, based on the input commands and data, controls the display to display images and videos. The keyboard host is also used to play voice or music. In this embodiment, the keyboard host includes a housing, a mid-plate 90, a keyboard, and a speaker module 100.

[0045] The outer shell protects the keyboard host's internal structure. The middle plate 90, located within the housing, serves as a supporting "frame" for the keyboard host's electronic components. Referring to Figure 3 , the keyboard and speaker module 100 are directly or indirectly secured to this middle plate 90. The keyboard is used for inputting commands and data. The speaker module 100 converts electrical audio signals into sound signals. The keyboard host uses the speaker module 100 to play voice and music.

[0046] Referring to Figure 4 , the number of speaker modules 100 can be two, with the two speaker modules 100 positioned at opposite ends of the keyboard housing in the width direction. The two speaker modules 100 have identical structures and are symmetrically positioned relative to the keyboard housing. In other embodiments, the number of speaker modules 100 can be one or three or more, and this is not specifically limited here. It should be noted that the position of the speaker module 100 within the keyboard housing can be flexibly set and is not specifically limited.

[0047] Referring to Figure 4 , the speaker module 100 includes a first speaker 10 and a second speaker 20 . A mounting hole 900 may be defined in the middle plate 90 , with the first speaker 10 and the second speaker 20 both being positioned within the mounting hole 900 and facing opposite directions. For example, referring to Figure 5 , the middle plate 90 includes a first plate portion 91 and a second plate portion 92 . The middle plate 90 includes a mounting hole 900 extending through the first plate portion 91 and the second plate portion 92 . The mounting hole 900 includes a first hole section 901 located in the first plate portion 91 and a second hole section 902 located in the second plate portion 92 . The first speaker 10 is mounted within the first hole section 901 , and the second speaker 20 is mounted within the second hole section 902 . The first plate portion 91 and the second plate portion 92 may be spaced apart.

[0048] 6 and 7 , the first speaker 10 includes a first magnetic circuit assembly 11, a first voice coil 13, and a first diaphragm assembly 12. The first magnetic circuit assembly 11 includes a first magnetic yoke 111 and a first magnet 112. The first diaphragm assembly 12 is connected to the first magnetic yoke 111 and encloses a first accommodating space 101. The first magnet 112 is located within the first accommodating space 101 and can be connected to the first magnetic yoke 111. The first voice coil 13 is located within the first accommodating space 101 and is connected to the first diaphragm assembly 12.

[0049] The first magnet 112 has two magnetic poles with opposite magnetic properties. One of the magnetic poles of the first magnet 112 is close to the first diaphragm assembly 12, and the other magnetic pole is away from the first diaphragm assembly 12. The two magnetic poles of the first magnet 112 are the north pole and the south pole, respectively. In this embodiment, the north pole of the first magnet 112 is close to the first diaphragm assembly 12, and the south pole of the first magnet 112 is away from the first diaphragm assembly 12. The first magnet 112 emits a magnetic field around itself. The magnetic lines of force of the external magnetic field of the first magnet 112 are emitted from the north pole of the first magnet 112, enter the south pole, and pass through the voice coil. The magnetic lines of force of the internal magnetic field of the first magnet 112 extend from the south pole to the north pole. The magnetic lines of force inside and outside the first magnet 112 together form a magnetic circuit. The first magnet 112 can be a permanent magnet such as a ferrite magnet, an alnico magnet, or a neodymium iron boron magnet, or it can be a device that can generate a magnetic field, such as an electromagnet.

[0050] The first magnetic yoke 111 can form a slot-like structure, with the first magnet 112 disposed within the slot. The first magnet 112 is spaced from the slot walls, forming a first magnetic gap 102 between the first magnet 112 and the slot walls. The first voice coil 13 can be a coil disk wound with a wire, with the end of the first voice coil 13 away from the first diaphragm assembly 12 extending into the first magnetic gap 102. The first magnetic yoke 111 surrounds the first magnet 112 to focus the magnetic flux emitted by the first magnet 112 within the first magnetic yoke 111, allowing more magnetic flux to pass through the first voice coil 13. When energized, the first voice coil 13 generates an induced magnetic field. The magnetic force of the first magnet 112 causes the first voice coil 13 to displace, driving the first diaphragm assembly 12 to vibrate. This vibration of the first diaphragm assembly 12 drives the air to vibrate, thereby generating sound waves. The first magnetic yoke 111 can be integrally formed from a metal material that can be attracted by a magnet, such as iron, nickel, cobalt, or a metal alloy containing iron, nickel, or cobalt.

[0051] The first diaphragm assembly 12 includes a first diaphragm 121 and a first dome ring 122. The first dome ring 122 is disposed around the edge of the first diaphragm 121 and is connected to the first magnetic yoke 111. The first dome ring 122 has a flat portion that is connected to the side of the first diaphragm 121 facing the first accommodating space 101. The first voice coil 13 is connected to the side of the flat portion away from the first diaphragm 121 by gluing or other means.

[0052] 6 and 7 , the second speaker 20 includes a second magnetic circuit assembly 21, a second voice coil 23, and a second diaphragm assembly 22. The second magnetic circuit assembly 21 includes a second magnetic yoke 211 and a second magnet 212. The second diaphragm assembly 22 is connected to the second magnetic yoke 211 and encloses a second accommodating space 201. The second magnet 212 is located within the second accommodating space 201 and can be connected to the second magnetic yoke 211. The second voice coil 23 is located within the second accommodating space 201 and is connected to the second diaphragm assembly 22.

[0053] The second magnet 212 has two magnetic poles with opposite magnetic properties. One of the magnetic poles of the second magnet 212 is close to the second diaphragm assembly 22, and the other is away from the second diaphragm assembly 22. The two magnetic poles of the second magnet 212 are respectively the north pole and the south pole. In this embodiment, the north pole of the second magnet 212 is away from the second diaphragm assembly 22, and the south pole of the second magnet 212 is close to the second diaphragm assembly 22. The second magnet 212 emits a magnetic field around itself. The magnetic lines of force of the external magnetic field of the second magnet 212 are emitted from the north pole of the second magnet 212, enter the south pole, and pass through the voice coil. The magnetic lines of force of the internal magnetic field of the second magnet 212 extend from the south pole to the north pole. The magnetic lines of force inside and outside the second magnet 212 together form a magnetic circuit. The second magnet 212 can be a permanent magnet such as a ferrite magnet, an alnico magnet, or a neodymium iron boron magnet, or it can be a device that can generate a magnetic field, such as an electromagnet.

[0054] The second magnetic yoke 211 can form a slot-like structure, with the second magnet 212 disposed within the slot. The second magnet 212 is spaced from the slot walls, forming a second magnetic gap 202 between the second magnet 212 and the slot walls. The second voice coil 23 can be a coil disk wound with a wire, with the ends of the second voice coil 23 facing away from the second diaphragm assembly 22 extending into the second magnetic gap 202. The second magnetic yoke 211 surrounds the outer periphery of the second magnet 212 to focus the magnetic flux emitted by the second magnet 212 within the second magnetic yoke 211, allowing more magnetic flux to pass through the second voice coil 23. When energized, the second voice coil 23 generates an induced magnetic field. The magnetic force of the second magnet 212 causes the second voice coil 23 to displace, driving the second diaphragm assembly 22 to vibrate. This vibration of the second diaphragm assembly 22 drives the air to vibrate, thereby generating sound waves. The second magnetic yoke 211 can be integrally formed from a metal material that can be attracted by a magnet, such as iron, nickel, cobalt, or a metal alloy containing iron, nickel, and cobalt.

[0055] The second diaphragm assembly 22 includes a second diaphragm 221 and a second dome ring 222. The second dome ring 222 is disposed around the edge of the second diaphragm 221 and is connected to the second magnetic yoke 211. The second dome ring 222 has a flat portion that is connected to the side of the second diaphragm 221 facing the second accommodating space 201. The second voice coil 23 is connected to the side of the flat portion away from the second diaphragm 221 by gluing or other means.

[0056] In the speaker module 100, the first speaker 10 and the second speaker 20 are stacked in reverse, that is, the first magnetic yoke 111 and the second magnetic yoke 211 are close to each other, the first diaphragm assembly 12 and the second diaphragm assembly 22 are far away from each other, and the direction of the first diaphragm assembly 12 is opposite to the direction of the second diaphragm assembly 22. At this time, the first speaker 10 and the second speaker 20 emit sound in opposite directions.

[0057] In the speaker module 100 , the magnetic poles of the first magnet 112 and the second magnet 212 are in the same direction. That is, in the speaker module 100 , the same magnetic poles of the first magnet 112 and the second magnet 212 face the same direction. In this way, the first speaker 10 and the second speaker 20 of the speaker module 100 jointly form a magnetic flow circuit, and the magnetic fields of the first magnet 112 and the second magnet 212 are superimposed on each other. The magnetic field strength of the first speaker 10 and the second speaker 20 is increased compared to when the two are used separately. The magnetic flux density of the speaker module 100 in the first magnetic gap 102 and the second magnetic gap 202 is increased. Compared with the current speaker module 100 in which the magnetic circuit poles of the first magnet 112 and the second magnet 212 are set in opposite directions, the speaker module 100 in this application has a greater driving strength for the first diaphragm assembly 12 and the second diaphragm assembly 22, which improves the magnetic circuit utilization efficiency of the speaker module 100. Under the same power, the speaker module 100 has a stronger driving force and better performance.

[0058] It should be noted that the aforementioned magnetic circuit pole direction refers to the direction from the north pole to the south pole within the magnet. In this embodiment, the magnetic circuit pole directions of the first magnet 112 and the second magnet 212 in the speaker module 100 are both from the first diaphragm assembly 12 to the second diaphragm assembly 22. At this point, the first magnet 112 and the second magnet 212 of the speaker module 100 form a magnetic circuit, the path of which is the south pole within the first magnet 112 - the north pole within the first magnet 112 - the first magnetic gap 102 - the side wall of the first magnetic yoke 111 - the side wall of the second magnetic yoke 211 - the second magnetic gap 202 - the south pole within the second magnet 212 - the north pole within the second magnet 212 - the bottom wall of the second magnetic yoke 211 - the bottom wall of the first magnetic yoke 111 - the south pole of the first magnet 112. In other embodiments, the magnetic pole directions of the magnetic circuits of the first magnet 112 and the second magnet 212 may also be from the second diaphragm assembly 22 to the first diaphragm assembly 12. At this time, the path of the magnetic circuit of the speaker module 100 is opposite to the path direction of the magnetic circuit in this embodiment, which is not repeated here.

[0059] During use, currents in opposite directions can be applied to the first voice coil 13 and the second voice coil 23. The direction of the magnetic force generated by electromagnetic induction by the first voice coil 13 and the second voice coil 23 is the same, and the direction of the magnetic flow in the first magnetic gap 102 is opposite to the direction of the magnetic flow in the second magnetic gap 202. Therefore, the first voice coil 13 and the second voice coil 23 can move in opposite directions synchronously to drive the first diaphragm assembly 12 and the second diaphragm assembly 22 to vibrate in opposite directions synchronously, so that the first speaker 10 and the second speaker 20 offset each other at least partially, so as to reduce the vibration of the center frame to a certain extent, and thereby reduce the generation of noise on the keyboard.

[0060] The first speaker 10 and the second speaker 20 can be two finished speakers with the same structure and capable of working independently. The magnets in the two finished speakers are set to have opposite directions of magnetic circuit poles. During production, the two finished speakers can be directly installed in reverse so that the installation directions of the two finished speakers are respectively the same as the installation directions of the first speaker 10 and the second speaker 20 in the speaker module 100 in the above embodiment, thereby forming the speaker module 100 in the present application. At this time, the speaker module 100 makes the magnetic circuit pole directions of the first magnet 112 and the second magnet 212 consistent due to the reverse installation of the first speaker 10 and the second speaker 20, so as to form a stronger magnetic flow circuit. The two finished speakers can be quickly assembled to form the speaker module 100 in the present application, which saves costs and has strong assembly flexibility. The position and model of the first speaker 10 and the second speaker 20 can be adjusted as needed, eliminating the steps of adjusting and improving the structures of each speaker when preparing the integrated speaker module 100.

[0061] Current speakers are usually equipped with a central magnet and side magnets. The side magnets are circumferentially arranged around the central magnet to constrain the magnetic lines of force, forming a magnetic gap between the central magnet and the side magnets. For this speaker, when assembling, the central magnet and the side magnets need to be positioned separately, which is time-consuming and labor-intensive. At the same time, if two speakers of this type are used to assemble the speaker module in reverse, the magnetic circuit pole directions of the central magnet and the side magnets need to be set accordingly. At the same time, since the side magnets can not only constrain the magnetic lines of force, but also generate magnetic lines of force and guide the direction of the magnetic lines of force, it is necessary to align the side magnets of the two speakers. If the alignment error of the side magnets of the two speakers is large, it will affect the direction and strength of the magnetic circuit. In addition, when the two speakers are reversely docked, the magnetic lines of force between the two central magnets are easily affected by the magnetic force of the side magnets and change direction, causing the overall magnetic field strength of the speaker module to be affected.

[0062] In the present speaker module 100, the speaker module 100 constrains the magnetic lines of force through the first magnetic yoke 111 and the second magnetic yoke 211, so that the magnetic lines of force in the magnetic circuit formed by the speaker module 100 converge in the first magnetic yoke 111 and the second magnetic yoke 211, thereby increasing the magnetic flux density in the first magnetic gap 102 and the second magnetic gap 202. Compared with the method of setting side magnets for constraint, setting the first magnetic yoke 111 and the second magnetic yoke 211 is lower in cost and simpler in structure, and eliminates the step of setting the magnetic pole direction of the side magnet magnetic circuit, reducing the influence of the error in the arrangement position of the first speaker 10 and the second speaker 20 on the magnetic field, so that the assembly of the speaker module 100 is faster and more convenient. Taking the first speaker 10 as an example, please refer to Figure 6. The first magnetic gap 102 is formed by the side walls of the first magnetic yoke 111 and the first magnet 112. During assembly, it is only necessary to determine the installation position of the first magnet 112 without considering the position of the side magnets. At the same time, the width of the first magnetic gap 102 at all locations around the first magnet 112 is fixed, which facilitates the rapid assembly of the first speaker 10. The first magnetic yoke 111 is arranged around the first magnet 112 to protect the first magnet 112 without having to set up a separate protective shell, saving costs. For the second speaker 20, the function of the second magnetic yoke 211 is the same and will not be repeated here. It should be noted that the width of the above-mentioned first magnetic gap 102 refers to the distance between the first magnet 112 and the side walls of the first magnetic yoke 111.

[0063] When the first speaker 10 and the second speaker 20 are reversely assembled to form the speaker module 100, the magnetic field within the speaker module 100 is generated solely by the first magnet 112 and the second magnet 212. Compared to speaker modules with side magnets, this speaker module 100 eliminates interference from the side magnets. Furthermore, the first and second magnetic yokes 111 and 211 in the speaker module 100 not only constrain the magnetic lines of force but also isolate the first and second magnetic gaps 102 and 202, preventing airflow between the first and second magnetic gaps 102 and 202 from affecting the first and second voice coils 13 and 23.

[0064] Specifically, referring to Figures 6 and 7 , the first magnetic yoke 111 includes a first support portion 1111 and a first edge portion 1112 connected to the first support portion 1111. The first edge portion 1112 is arranged at an angle with the first support portion 1111, so that the first support portion 1111 and the first edge portion 1112 together form a slot-like structure, with the first support portion 1111 forming the bottom wall of the slot-like structure and the first edge portion 1112 forming the sidewalls of the slot-like structure. The first edge portion 1112 and the first support portion 1111 are both plate-shaped, and the first edge portion 1112 can be perpendicular to the first support portion 1111. The first magnet 112 is mounted on the first support portion 1111, and the first edge portion 1112 is circumferentially disposed around the first magnet 112. The first edge portion 1112 and the first magnet 112 are spaced apart and form a first magnetic gap 102.

[0065] The second magnetic yoke 211 includes a second support portion 2111 and a second edge portion 2112 connected to the second support portion 2111. The second edge portion 2112 is arranged at an angle with the second support portion 2111, so that the second support portion 2111 and the second edge portion 2112 together form a groove-like structure. The second support portion 2111 forms the bottom wall of the groove-like structure, and the second edge portion 2112 forms the sidewall of the groove-like structure. The second edge portion 2112 and the second support portion 2111 are both plate-shaped, and the second edge portion 2112 can be perpendicular to the second support portion 2111. The second magnet 212 is mounted on the second support portion 2111. The second edge portion 2112 circumferentially surrounds the second magnet 212, and the second edge portion 2112 and the second magnet 212 are separated to form a second magnetic gap 202.

[0066] For example, referring to Figures 6 and 7, the first magnet 112 is a cube having a first top surface, a first bottom surface, and a first side surface. The first top surface is opposite to the first bottom surface. There are four first side surfaces, each of which has an equal area and is arranged around the first top surface and the first bottom surface. The angle between two adjacent first side surfaces is 90°. The cross-section of the first support portion 1111 is square. As shown in Figure 6, the first edge portion 1112 includes four first sub-portions 1112a, which are arranged around the edge of the first support portion 1111 and are all perpendicular to the first support portion 1111. The first bottom surface is connected to the first support portion 1111, and each first sub-portion 1112a is parallel to a first side surface of the first magnet 112. The first support portion 1111 and the first edge portion 1112 are integrally formed. Among them, the first bottom surface of the first magnet 112 can be glued to the first support part 1111 by glue, or the first magnet 112 and the first support part 1111 can be fixed to the first support part 1111 by processing bolt holes on the first magnet 112 and the first support part 1111, and inserting bolts into the bolt holes of the first magnet 112 and the first support part 1111.

[0067] The second magnet 212 is a square, having a second top surface, a second bottom surface, and a first side surface. The second top surface and the second bottom surface are opposite to each other. The second magnet 212 has four first side surfaces, each of which has an equal area and is disposed around the second top surface and the second bottom surface. The angle between two adjacent first side surfaces is 90°. The second support portion 2111 has a square cross-section. As shown in FIG7 , the second edge portion 2112 includes four second sub-portions 2112a, which are disposed around the edge of the second support portion 2111 and are perpendicular to the second support portion 2111. The second bottom surface is connected to the second support portion 2111, and each second sub-portion 2112a is parallel to a side surface of the second magnet 212. The second support portion 2111 and the second edge portion 2112 are formed as two parts. Among them, the second bottom surface of the second magnet 212 can be glued to the second support part 2111 by glue, or the second magnet 212 and the second support part 2111 can be fixed to the second support part 2111 by processing bolt holes on the second magnet 212 and the second support part 2111, and inserting bolts into the bolt holes of the second magnet 212 and the second support part 2111.

[0068] As one of the embodiments, a first magnetic gap 102 is formed between each first section 1112a and its corresponding first side surface, and the widths of the first magnetic gaps 102 formed between the four first sections 1112a and their corresponding first side surfaces are equal, so that the driving force acting on the first voice coil 13 is uniform. Two second magnetic gaps 202 are formed between each second section 2112a and its corresponding first side surface, and the widths of the second magnetic gaps 202 formed between the four second sections 2112a and their corresponding first side surfaces are equal, so that the driving force acting on the second voice coil 23 is uniform.

[0069] Optionally, the four first sections 1112a are spaced apart. In this case, the first sections 1112a can be formed by bending the edges of a cross-shaped flat plate to facilitate processing. The spaced-apart first sections 1112a also increase the density of the magnetic flux lines gathered by each first section 1112a, thereby increasing the magnetic flux density acting on the local area of ​​the first voice coil 13. The sidewall area of ​​the groove-like structure formed by the first sections 1112a is equal to the area of ​​the first side surface of the first magnet 112, ensuring a uniform distribution of magnetic flux lines within the first magnetic gap 102.

[0070] The four second segments 2112a are spaced apart. These segments 2112a can be formed by bending the edges of a cross-shaped flat plate, facilitating processing. The spacing of the second segments 2112a increases the density of the magnetic flux lines gathered by each segment 2112a, thereby increasing the magnetic flux density acting on the second voice coil 23. The sidewall area of ​​the groove-like structure formed by the second segments 2112a is equal to the area of ​​the first side surface of the second magnet 212, ensuring a uniform distribution of magnetic flux lines within the second magnetic gap 202.

[0071] To improve the confinement of magnetic flux, as shown in Figures 6 and 7 , the first magnetic circuit assembly 11 further includes a first central yoke 14. The first magnet 112 is sandwiched between the first conductive yoke 111 and the first central yoke 14. Specifically, the first central yoke 14 is connected to the first top surface of the first magnet 112, creating a magnetic gap between the first central yoke 14 and the first edge portion 1112. The first central yoke 14 is used to confine the magnetic flux emanating from the first top surface of the first magnet 112, directing it from the edge of the first central yoke 14, thereby increasing the magnetic flux density acting on the first voice coil 13. The first central yoke 14 can be fixedly connected to the first magnet 112 by gluing, snapping, or threading. The first central yoke 14 can be integrally formed from a metal material that is attractive to magnets, such as iron, nickel, cobalt, or a metal alloy containing iron, nickel, or cobalt. The first diaphragm assembly 12 is spaced apart from the first central yoke 14 to avoid affecting its vibration. Optionally, the cross-sectional shape of the first center magnetic yoke 14 is a square with the same cross-sectional shape as the first magnet 112, and the edge of the first center magnetic yoke 14 is flush with the first side surface of the first magnet 112, so as to constrain all magnetic lines of force emitted from the first top surface of the first magnet 112.

[0072] The second magnetic circuit assembly 21 also includes a second central yoke 24. The second magnet 212 is sandwiched between the second conductive yoke 211 and the second central yoke 24. Specifically, the second central yoke 24 is connected to the second top surface of the second magnet 212, forming a magnetic gap between the second central yoke 24 and the second edge portion 2112. The second central yoke 24 is used to constrain the magnetic flux lines emanating from the second top surface of the second magnet 212 and direct them toward the edge of the second central yoke 24, thereby increasing the magnetic flux density acting on the second voice coil 23. The second central yoke 24 can be fixedly connected to the second magnet 212 by gluing, snapping, or threading. The second central yoke 24 can be formed from a metal material that is attractive to magnets, such as iron, nickel, cobalt, or a metal alloy containing iron, nickel, or cobalt. The second diaphragm assembly 22 is spaced apart from the second central yoke 24 to avoid affecting its vibration. Optionally, the cross-sectional shape of the second center magnetic yoke 24 is a square with the same cross-sectional shape as the second magnet 212, and the edge of the second center magnetic yoke 24 is flush with the first side surface of the second magnet 212, so as to constrain all magnetic lines of force emitted by the second magnet 212 from the second top surface.

[0073] In other embodiments, the first magnetic circuit assembly 11 may further include a first magnetic yoke 111, a first magnet 112, a first central magnetic yoke 14, and a first edge magnetic structure. The first edge magnetic structure is disposed within the first accommodating space and surrounds the first magnet 112. The first edge magnetic structure may be connected to the first magnetic yoke 111. Specifically, the first edge magnetic structure abuts the first edge portion 1112, and a first magnetic gap 102 is formed between the first edge magnetic structure and the first magnet 112. The first edge magnetic structure is magnetic, and the magnetic pole direction of the magnetic circuit of the first edge magnetic structure is opposite to the magnetic pole direction of the magnetic circuit of the first magnet 112. That is, when the north pole of the first magnet 112 is close to the first diaphragm assembly 12 and the south pole is away from the first diaphragm assembly 12, the south pole of the first edge magnetic structure is close to the first diaphragm assembly 12, and the north pole is away from the first diaphragm assembly 12. The first edge magnetic structure can provide an external magnetic field, thereby enhancing the magnetic field strength in the magnetic circuit formed by the speaker module 100, thereby further increasing the driving force for the vibration of the first diaphragm assembly 12.

[0074] Specifically, the first edge magnet structure includes a plurality of first edge magnets, each of which is disposed within the first accommodating space and arranged circumferentially around the first magnet 112. The arrangement of the plurality of first edge magnets facilitates the processing of the first edge magnet structure and provides greater flexibility in the number of magnets. The magnetic circuit pole directions of the plurality of first edge magnets are all identical and opposite to those of the first magnet 112. That is, the south pole of each first edge magnet is close to the first diaphragm assembly 12, and the north pole is away from the first diaphragm assembly 12. The first edge magnets can be sequentially butted end to end to form a ring-shaped structure surrounding the first magnet 112, thereby providing a greater magnetic field strength. The first edge magnets can also be arranged circumferentially at intervals around the first magnet 112 to enhance the flexibility of their installation. The number of first edge magnets can be two, with the two first edge magnets disposed on opposite sides of the first magnet 112, each connected to a corresponding first subsection 1112a. The number of the first side magnets may also be four, and the four first side magnets are respectively connected to a first sub-portion 1112a. In this case, the four first side magnets are arranged at equal intervals.

[0075] The second magnetic circuit assembly 21 may further include a second magnetic conductive yoke 211, a second magnet 212, a second central magnetic yoke 24, and a second edge magnetic structure. The second edge magnetic structure is disposed within the second accommodating space and surrounds the second magnet 212. The second edge magnetic structure may be connected to the second magnetic conductive yoke 211. Specifically, the second edge magnetic structure abuts the second edge portion 2112, forming a second magnetic gap 202 between the second edge magnetic structure and the second magnet 212. The second edge magnetic structure is magnetic, and the magnetic pole direction of the magnetic circuit of the second edge magnetic structure is opposite to the magnetic pole direction of the magnetic circuit of the second magnet 212. That is, when the north pole of the second magnet 212 is close to the second diaphragm assembly 22 and the south pole is away from the second diaphragm assembly 22, the south pole of the second edge magnetic structure is close to the second diaphragm assembly 22, and the north pole is away from the second diaphragm assembly 22. In this case, the magnetic pole direction of the second edge magnetic structure is opposite to that of the first edge magnetic structure. The second edge magnetic structure can provide an external magnetic field to enhance the magnetic field strength in the magnetic circuit formed by the speaker module 100 , thereby further increasing the driving force for the vibration of the second diaphragm assembly 22 .

[0076] Specifically, the second edge magnet structure includes a plurality of second edge magnets, each of which is disposed within the second accommodation space and arranged circumferentially around the second magnet 212. The arrangement of the plurality of second edge magnets facilitates the processing of the second edge magnet structure and provides greater flexibility in the number of second edge magnets. The magnetic circuit pole directions of the plurality of second edge magnets are all identical and opposite to those of the second magnet 212. That is, the south pole of each second edge magnet is adjacent to the second diaphragm assembly 22, and the north pole is distal to the second diaphragm assembly 22. The second edge magnets can be sequentially butted end-to-end to form a ring-shaped structure surrounding the second magnet 212, thereby providing a greater magnetic field strength. The second edge magnets can also be spaced apart circumferentially around the second magnet 212 to enhance the flexibility of their installation. The number of second edge magnets can be two, with the two second edge magnets disposed on opposite sides of the second magnet 212, each second edge magnet connected to a corresponding second subsection 2112a. The number of the second side magnets may also be four, and the four second side magnets are respectively connected to a second sub-portion 2112a. In this case, the four second side magnets are arranged at equal intervals.

[0077] The first magnetic yoke 111 and the first diaphragm assembly 12 can be connected directly or through other structures. For example, the first magnetic yoke 111 and the first diaphragm assembly 12 can be directly connected through the middle plate 90, which is not limited here. When the first magnetic yoke 111 and the first diaphragm assembly 12 are directly connected, the first magnetic yoke 111 plays a supporting and connecting role, eliminating the inconvenience of setting up a shell. Compared with speakers with side magnets, connecting the first magnetic yoke 111 to the first diaphragm assembly 12 simplifies the structure of the speaker, saves processing steps, and reduces the size of the speaker, because side magnets generally cannot be directly connected to the first diaphragm assembly 12.

[0078] The second magnetic yoke 211 and the second diaphragm assembly 22 can be connected directly or through other structures. For example, the second magnetic yoke 211 and the second diaphragm assembly 22 can be directly connected through the middle plate 90, which is not limited here. When the second magnetic yoke 211 and the second diaphragm assembly 22 are directly connected, the second magnetic yoke 211 plays a supporting and connecting role, eliminating the inconvenience of setting up a shell. Compared with speakers with side magnets, connecting the second magnetic yoke 211 and the second diaphragm assembly 22 simplifies the structure of the speaker, saves processing steps, and reduces the size of the speaker, because side magnets generally cannot be directly connected to the first diaphragm assembly 22.

[0079] In one embodiment, referring to FIG6 , the first speaker 10 further includes a first support frame 15 , through which the first magnetic yoke 111 and the first diaphragm assembly 12 are connected. The first support frame 15 is disposed between the first magnetic yoke 111 and the first diaphragm assembly 12 . Compared to a speaker in which the first diaphragm assembly 12 is directly connected to the first magnetic yoke 111 , the first speaker 10 in this embodiment increases the distance between the first diaphragm assembly 12 and the first magnetic gap 102 , providing more space for the installation of the first voice coil 13 . The first voice coil 13 can use a longer coil disk to increase the coil's induced magnetic field, thereby increasing the amplitude of the first diaphragm assembly 12 . The first support frame 15 facilitates the connection of the first speaker 10 to other components. For a laptop computer, the first speaker 10 can be connected to the mid-plate 90 via the first support frame 15 , specifically by being installed within the first hole section 901 via the first support frame 15 .

[0080] The second speaker 20 also includes a second support frame 25, through which the second magnetic yoke 211 and the second diaphragm assembly 22 are connected. The second support frame 25 is disposed between the second magnetic yoke 211 and the second diaphragm assembly 22. Compared to a speaker in which the second diaphragm assembly 22 is directly connected to the second magnetic yoke 211, the second speaker 20 in this embodiment increases the distance between the second diaphragm assembly 22 and the second magnetic gap 202, providing a larger space for the installation of the second voice coil 23. The second voice coil 23 can use a longer coil disk to increase the induced magnetic field of the coil, thereby increasing the amplitude of the second diaphragm assembly 22. The second support frame 25 facilitates the connection of the second speaker 20 to other components. For a laptop computer, the second speaker 20 can be connected to the midboard 90 via the second support frame 25, specifically by being installed in the second hole section 902 via the second support frame 25.

[0081] The first support frame 15 and the second support frame 25 can be directly connected to form a whole with the first speaker 10 and the second speaker 20. Alternatively, the first support frame 15 and the second support frame 25 may not be directly connected, but rather may be mounted on other components of the keyboard, such as being indirectly connected via a middle plate 90 (as shown in FIG3 ) to define the positions of the first speaker 10 and the second speaker 20. Specifically, the first support frame 15 is connected to a first plate portion 91, and the second support frame 25 is connected to a second plate portion 92. The first plate portion 91 and the second plate portion 92 are connected to form the middle plate 90.

[0082] As one embodiment, the first speaker 10 and the second speaker 20 are of the same size and are aligned. It is understandable that the first diaphragm assembly 12, the first voice coil 13, the first magnetic circuit assembly 11, the second diaphragm assembly 22, the second voice coil 23, and the second diaphragm assembly 22 are arranged on the same center line to increase the magnetic field strength at the first voice coil 13 and the second voice coil 23. In other embodiments, the first speaker 10 and the second speaker 20 may not be completely aligned or completely parallel, but may be roughly aligned and roughly parallel to reduce the restrictions on installation accuracy and facilitate quick installation. At the same time, the magnetic flux density in the first magnetic gap 102 and the second magnetic gap 202 is the same, so that the vibration amplitudes of the first diaphragm assembly 12 and the second diaphragm assembly 22 are similar, reducing the generation of noise.

[0083] As one embodiment, please refer to Figures 8 and 9. The first speaker 10 and the second speaker 20 are in contact with each other, that is, the first magnetic yoke 111 and the second magnetic yoke 211 are in contact with each other, so as to reduce the distance between the first magnet 112 and the second magnet 212, thereby increasing the superposition effect of the magnetic field between the first magnet 112 and the second magnet 212 (such as area C in Figure 9). At the same time, the magnetic lines of force between the first magnet 112 and the second magnet 212 are constrained and conducted through the first magnetic yoke 111 and the second magnetic yoke 211, thereby reducing magnetic leakage. The first support portion 1111 and the second support portion 2111 can be fixedly connected by bonding, welding, etc., or they can simply support each other without a fixed connection, which is not limited here.

[0084] As one embodiment, referring to FIG10 , the first speaker 10 and the second speaker 20 are spaced apart, that is, the first magnetic yoke 111 and the second magnetic yoke 211 are spaced apart. This eliminates the need to connect the first speaker 10 and the second speaker 20, thus avoiding reliability issues such as drops and assembly collisions. This reduces the installation precision requirements for the first speaker 10 and the second speaker 20, thereby reducing assembly difficulty and enabling rapid assembly of the speaker module 100 while avoiding new process costs. Because the distance between the first magnet 112 and the second magnet 212 is increased, and the magnetic flux between the first magnet 112 and the second magnet 212 is lost in the gap between the first magnetic yoke 111 and the second magnetic yoke 211, the magnetic flux density acting on the first voice coil 13 and the second voice coil 23 in this embodiment is reduced compared to the embodiment in which the first speaker 10 and the second speaker 20 are in contact. In practical applications, the distance between the first speaker 10 and the second speaker 20 should not be too large, and can accommodate installation tolerances. For the speaker module 100 on a laptop computer, the distance between the first speaker 10 and the second speaker 20 can be controlled within 0.4-0.8 mm.

[0085] As one embodiment, referring to Figures 11 and 12, the speaker module 100 further includes a third magnet 30. The first speaker 10 is spaced apart from the second speaker 20, and the third magnet 30 is located between the first speaker 10 and the second speaker 20 and is connected to at least one of the first speaker 10 and the second speaker 20. For example, the third magnet 30 is connected to the first speaker 10 and spaced apart from the second speaker 20, or the third magnet 30 is connected to the second speaker 20 and spaced apart from the first speaker 10. In this way, there is no need to connect the first speaker 10 and the second speaker 20. Only the third magnet 30 needs to be provided on the first speaker 10 or the second speaker 20, thereby avoiding reliability issues and reducing assembly difficulty. The third magnet 30 can also be connected to both the first speaker 10 and the second speaker 20 to reduce the distance between the first magnet 112 and the second magnet 212, thereby enhancing the magnetic field strength of the speaker module 100. In the speaker module 100, the magnetic pole orientation of the third magnet 30 is consistent with that of the first magnet 112 and the second magnet 212. That is, the same magnetic poles of the first magnet 112, the second magnet 212, and the third magnet 30 are oriented in the same direction. The third magnet 30 provides an external magnetic field for the first speaker 10 and the second speaker 20. The magnetic lines of force of the third magnet 30 overlap with the magnetic circuits of the first speaker 10 and the second speaker 20. Compared to an embodiment without the third magnet 30, the speaker module 100 in this embodiment enhances the magnetic flux density in the first magnetic gap 102 and the second magnetic gap 202, thereby increasing the driving force on the first voice coil 13 and the second voice coil 23, and thus increasing the vibration amplitude of the first diaphragm assembly 12 and the second diaphragm assembly 22. In other embodiments, the third magnet 30 may also be located between the first speaker 10 and the second speaker 20 but has no connection with the first speaker 10 and the second speaker 20 , but is positioned by other structures, which is not limited here.

[0086] Optionally, the first support portion 1111 and the second support portion 2111 are both closed plate-like structures, that is, no through-holes are provided on the first support portion 1111 and the second support portion 2111. The third magnet 30 can be installed on the first support portion 1111 and spaced apart from the second support portion 2111, or installed on the second support portion 2111 and spaced apart from the first support portion 1111. In this case, the first speaker 10 and the second speaker 20 can still be flexibly installed, reducing the difficulty of assembly. Referring to Figures 13 and 14, the third magnet 30 can also be connected to the first support portion 1111 and the second support portion 2111 at the same time. In this case, the magnetic lines of force between the first magnet 112 and the third magnet 30 are constrained by the first support portion 1111, and the magnetic lines of force between the second magnet 212 and the third magnet 30 are constrained by the second support portion 2111, to reduce magnetic leakage. The third magnet 30 can be fixedly connected to the first support portion 1111 and / or the second support portion 2111 by bonding, welding, or the like, or can be simply clamped between the first support portion 1111 and the second support portion 2111. The third magnet 30 has no fixed connection with either the first support portion 1111 or the second support portion 2111, and this is not limited here. The cross-sectional area of ​​the third magnet 30 can be the same as the cross-sectional area of ​​the first magnet 112 and the second magnet 212, so that the magnetic lines of force between the first magnet 112 and the second magnet 212 are evenly distributed, and the influence on the direction of the magnetic lines of force in the first edge portion 1112 and the second edge portion 2112 is reduced.

[0087] Optionally, please refer to Figure 13, the first magnetic yoke 111 is provided with a first avoidance groove 103 on the side facing the second magnetic yoke 211, specifically, the first support portion 1111 is provided with a first avoidance groove 103 on the side facing the second support portion 2111, the second support portion 2111 is a closed plate structure, and the third magnet 30 is at least partially accommodated in the first avoidance groove 103 to reduce the distance between the first magnet 112 and the second magnet 212. Compared with the embodiment in which the first support portion 1111 and the second support portion 2111 are both closed plate structures, this arrangement enhances the superposition effect of the magnetic fields between the first magnet 112, the second magnet 212 and the third magnet 30, thereby increasing the magnetic field strength of the first magnetic gap 102 and the second magnetic gap 202. Among them, the first avoidance groove 103 can be a through groove, and the third magnet 30 abuts against the first magnet 112, so that the magnetic lines of force of the third magnet 30 are directly connected to the magnetic lines of force of the first magnet 112, while further reducing the distance between the first magnet 112 and the second magnet 212. At this time, the third magnet 30 can abut against the second support portion 2111, or they can be spaced apart, and the first magnetic yoke 111 and the second magnetic yoke 211 can abut against each other, or they can be spaced apart. The third magnet 30 can be fixedly connected to the bottom wall of the first avoidance groove 103 or the first magnet 112 by bonding, welding, etc., which is not limited here.

[0088] Optionally, please refer to Figure 14, the second magnetic yoke 211 is provided with a second avoidance groove 203 on the side facing the first magnetic yoke 111, specifically, the second support portion 2111 is provided with a second avoidance groove 203 on the side facing the first support portion 1111, the first support portion 1111 is a closed plate-like structure, and the third magnet 30 is at least partially accommodated in the second avoidance groove 203 to reduce the distance between the first magnet 112 and the second magnet 212. Compared with the embodiment in which the first support portion 1111 and the second support portion 2111 are both closed plate-like structures, this arrangement enhances the superposition effect of the magnetic fields between the first magnet 112, the second magnet 212 and the third magnet 30, thereby increasing the magnetic field strength of the first magnetic gap 102 and the second magnetic gap 202. The second avoidance groove 203 can be a through groove, and the third magnet 30 abuts the second magnet 212 so that the magnetic lines of force of the third magnet 30 directly connect with the magnetic lines of force of the second magnet 212, while further reducing the distance between the first magnet 112 and the second magnet 212. At this time, the third magnet 30 can abut the first support portion 1111 or be spaced apart, and the first magnetic yoke 111 and the second magnetic yoke 211 can abut or be spaced apart. The third magnet 30 can be fixedly connected to the bottom wall of the second avoidance groove 203 or the second magnet 212 by bonding, welding, etc., which is not limited here.

[0089] Optionally, referring to FIG15 , the first support portion 1111 defines a first avoidance groove 103, and the second support portion 2111 defines a second avoidance groove 203. The third magnet 30 is partially accommodated in the first avoidance groove 103 and partially accommodated in the second avoidance groove 203. Compared to the case where only the first avoidance groove 103 or only the second avoidance groove 203 is provided, this arrangement further reduces the distance between the first magnet 112 and the second magnet 212, thereby further enhancing the magnetic flux density of the first magnetic gap 102 and the second magnetic gap 202. The first avoidance groove 103 and the second avoidance groove 203 can both be through grooves, and the third magnet 30 abuts against both the first magnet 112 and the second magnet 212. Thus, the first magnet 112, the second magnet 212, and the third magnet 30 form a larger magnet, which not only enhances the magnetic flux density of the first magnetic gap 102 and the second magnetic gap 202, but also further reduces magnetic flux loss. At this time, the first supporting portion 1111 and the second supporting portion 2111 may be in contact with each other or spaced apart from each other.

[0090] Finally, it should be noted that the above are only specific embodiments of this application, but the scope of protection of this application is not limited to them. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A speaker module, characterized in that: include: A first speaker includes a first magnetic circuit assembly, a first voice coil, and a first diaphragm assembly, wherein the first magnetic circuit assembly includes a first magnetic yoke and a first magnet, the first diaphragm assembly and the first magnetic yoke together enclose a first accommodation space, the first magnet and the first voice coil are located in the first accommodation space, and the first voice coil is disposed around the first magnet and connected to the first diaphragm assembly; a second speaker stacked opposite to the first speaker, the second speaker comprising a second magnetic circuit assembly, a second voice coil, and a second diaphragm assembly, the second magnetic circuit assembly comprising a second magnetically conductive yoke and a second magnet, the second diaphragm assembly and the second magnetically conductive yoke together forming a second accommodation space, the second magnet and the second voice coil being located within the second accommodation space, the second voice coil being disposed around the second magnet and connected to the second diaphragm assembly; The magnetic pole directions of the magnetic circuits of the first magnet and the second magnet are consistent.

2. The speaker module according to claim 1, wherein: The first speaker further includes a first central magnetic yoke, which together with the first magnetically conductive yoke holds the first magnet; the second speaker further includes a second central magnetic yoke, which together with the second magnetically conductive yoke holds the second magnet.

3. The speaker module according to claim 2, wherein: The first speaker further includes a first support frame connected between the first diaphragm assembly and the first magnetic yoke; the second speaker further includes a second support frame connected between the second diaphragm assembly and the second magnetic yoke.

4. The speaker module according to claim 3, wherein: The first magnetic conductive yoke, the first magnetic circuit assembly, the first voice coil, the first diaphragm assembly, the second magnetic conductive yoke, the second magnetic circuit assembly, the second voice coil and the second diaphragm assembly are arranged on the same center line.

5. The speaker module according to any one of claims 1 to 4, characterized in that: The first magnetically conductive yoke includes a first supporting portion and a first edge portion connected to the first supporting portion, the first edge portion and the first supporting portion are arranged at an angle, the first edge portion is arranged around the first magnet, the first magnet is connected to the first supporting portion, a first magnetic gap is formed between the first magnet and the first edge portion, and the first voice coil at least partially extends into the first magnetic gap; the second magnetically conductive yoke includes a second supporting portion and a second edge portion connected to the second supporting portion, the second edge portion and the second supporting portion are arranged at an angle, the second edge portion is arranged around the second magnet, the second magnet is connected to the second supporting portion, a second magnetic gap is formed between the second magnet and the second edge portion, and the second voice coil at least partially extends into the second magnetic gap.

6. The speaker module according to claim 5, characterized in that: The width of the first magnetic gap is the same as the width of the second magnetic gap.

7. The speaker module according to claim 5, wherein: The first magnet has four first side surfaces, which are arranged around the first magnet; the first edge portion includes four first divisions, which are arranged around the first magnet and spaced apart from each other; each first division is parallel to one of the first side surfaces, and a first magnetic gap is formed between the first division and the corresponding first side surface; the second magnet has four first side surfaces, which are arranged around the second magnet; the second edge portion includes four second divisions, which are arranged around the second magnet and spaced apart from each other; each second division is parallel to two of the first side surfaces, and a second magnetic gap is formed between the second division and the corresponding first side surface.

8. The loudspeaker module according to any one of claims 1 to 4, characterized in that: The first magnetic circuit component also includes a first edge magnetic structure, which is arranged in the first accommodating space and surrounds the first magnet. The magnetic circuit pole direction of the first edge magnetic structure is opposite to the magnetic circuit pole direction of the first magnet, and a first magnetic gap is formed between the first edge magnetic structure and the first magnet; the second magnetic circuit component also includes a second edge magnetic structure, which is arranged in the second accommodating space and surrounds the second magnet. The magnetic circuit pole direction of the second edge magnetic structure is opposite to the magnetic circuit pole direction of the second magnet, and a second magnetic gap is formed between the second edge magnetic structure and the second magnet.

9. The speaker module according to claim 8, wherein: The first edge magnet structure includes multiple first edge magnets, which are all arranged in the first accommodating space and circumferentially around the first magnet; the second edge magnet structure includes multiple second edge magnets, which are all arranged in the second accommodating space and circumferentially around the second magnet.

10. The loudspeaker module according to any one of claims 1 to 9, characterized in that: The first speaker is spaced apart from the second speaker.

11. The loudspeaker module according to any one of claims 1 to 9, characterized in that: The first speaker abuts against the second speaker.

12. The loudspeaker module according to any one of claims 1 to 9, characterized in that: The speaker module further includes a third magnet disposed between the first speaker and the second speaker, and a magnetic circuit and magnetic pole direction of the third magnet is consistent with a magnetic circuit and magnetic pole direction of the first magnet and the second magnet.

13. The speaker module according to claim 12, wherein: The third magnet is connected to at least one of the first speaker and the second speaker.

14. The speaker module according to claim 12, wherein: The first magnetic conductive yoke is provided with a first avoidance groove on a side facing the second magnetic conductive yoke, and the third magnet is at least partially accommodated in the first avoidance groove.

15. The speaker module according to claim 14, wherein: The first avoidance groove is a through groove, and the third magnet is connected to the first magnet.

16. The loudspeaker module according to any one of claims 12 to 15, characterized in that: The second magnetic conductive yoke is provided with a second avoidance groove on a side facing the first magnetic conductive yoke, and the third magnet is at least partially accommodated in the second avoidance groove.

17. The speaker module according to claim 16, wherein: The second avoidance groove is a through groove, and the third magnet is connected to the second magnet.

18. An electronic device, characterized in that: Comprising the speaker module according to any one of claims 1 to 17.

19. The electronic device according to claim 18, wherein: The electronic device is a laptop computer, which includes a shell, a middle plate and a keyboard. The middle plate is arranged in the shell, the keyboard and the speaker module are fixedly connected to the middle plate, and the first speaker and the second speaker respectively emit sound toward the front and back of the middle plate.

Images