Speaker modules and electronic devices

Abstract

This application provides a loudspeaker module and an electronic device. The loudspeaker module includes a first loudspeaker and a second loudspeaker. The first loudspeaker includes a first magnetic circuit assembly, a first voice coil, and a first diaphragm assembly. The first magnetic circuit assembly includes a first magnetic yoke and a first magnet. The first voice coil is disposed around the first magnet and connected to the first diaphragm assembly. The second loudspeaker is stacked in opposite directions to the first loudspeaker. The second loudspeaker includes a second magnetic circuit assembly, a second voice coil, and a second diaphragm assembly. The second magnetic circuit assembly includes a second magnetic yoke and a second magnet. The second voice coil is disposed around the second magnet and connected to the second diaphragm assembly. The magnetic poles of the first magnet and the second magnet are aligned. This loudspeaker module forms a magnetofluidic loop. The magnetic fields of the first magnet and the second magnet are superimposed, increasing the magnetic flux density and improving the magnetic circuit utilization efficiency of the loudspeaker module.

Description

Technical Field

[0001] This application relates to the field of loudspeakers, and more particularly to a loudspeaker module and electronic device. Background Technology

[0002] The demand for bass in electronic devices such as computers and mobile phones is increasing. To meet low-frequency response requirements, speaker amplitude designs are becoming larger. In this case, the vibration of the speaker's voice coil and diaphragm excites keyboard vibration, which not only affects the user experience but can also resonate with the entire device structure in severe cases, producing noticeable noise. This vibration also limits bass enhancement. To reduce speaker vibration output while improving bass performance, two identical speakers are often connected back-to-back to form a speaker module. Because the two identical speakers vibrate in opposite directions, the overall vibration of the module cancels 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 as a single unit, affecting sound quality. Summary of the Invention

[0003] This application provides a speaker module and electronic device that solves the problem of reduced magnetic circuit efficiency affecting sound quality in existing speaker modules.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, a loudspeaker module is provided, including a first loudspeaker and a second loudspeaker. The first loudspeaker includes a first magnetic circuit assembly, a first voice coil, and a first diaphragm assembly. The first magnetic circuit assembly includes a first magnetic yoke and a first magnet. The first diaphragm assembly and the first magnetic yoke together form a first accommodating space. The first magnet and the first voice coil are located within the first accommodating space. The first voice coil is disposed around the first magnet and connected to the first diaphragm assembly. The second loudspeaker is stacked in reverse order with the first loudspeaker. The second loudspeaker includes a second magnetic circuit assembly, a second voice coil, and a second diaphragm assembly. The second magnetic circuit assembly includes a second magnetic yoke and a second magnet. The second diaphragm assembly and the second magnetic yoke together form a second accommodating space. The second magnet and the second voice coil are located within the second accommodating space. The second voice coil is disposed around the second magnet and connected to the second diaphragm assembly. The magnetic pole directions of the first magnet and the second magnet are aligned. In this way, the first and second speakers of the speaker module together form a magnetic flux loop. The magnetic fields of the first and second magnets are superimposed, and the magnetic field strength of the first and second speakers is increased compared to when they are used alone. The magnetic flux density of the speaker module in the first and second magnetic gaps is increased. Compared with the current speaker module where the magnetic poles of the first and second magnets are arranged in opposite directions, the speaker module in this application has a greater driving strength for the first and second diaphragm assemblies, which improves the magnetic circuit utilization efficiency of the speaker module. Under the same power, the speaker module has a stronger driving force and better performance.

[0006] In one embodiment of the first aspect, the first loudspeaker further includes a first central yoke, which, together with the first conductive yoke, clamps the first magnet. The first central yoke constrains magnetic field lines emanating from a first top surface of the first magnet, causing these lines to emanate from the edge of the first central yoke, thereby increasing the magnetic flux density acting on the first voice coil. The second loudspeaker further includes a second central yoke, which, together with the second conductive yoke, clamps the second magnet. The second central yoke constrains magnetic field lines emanating from a second top surface of the second magnet, causing these lines to emanate from the edge of the second central yoke, thereby increasing the magnetic flux density acting on the second voice coil.

[0007] In one embodiment of the first aspect, the first loudspeaker further includes a first support frame connected between the first diaphragm assembly and the first magnetic yoke. In this embodiment, the distance between the first diaphragm assembly and the first magnetic gap is increased, providing more space for the first voice coil. The first voice coil can be a longer coil to increase the induced magnetic field of the coil, thereby increasing the amplitude of the first diaphragm assembly. The second loudspeaker further includes a second support frame connected between the second diaphragm assembly and the second magnetic yoke. In this embodiment, the distance between the second diaphragm assembly and the second magnetic gap is increased, providing more space for the second voice coil. The second voice coil can be a longer coil to increase the induced magnetic field of the coil, thereby increasing the amplitude of the second diaphragm assembly.

[0008] In one embodiment of the first aspect, the first magnetic yoke, the first voice coil, the first diaphragm assembly, the second magnetic yoke, the second voice coil, and the second diaphragm assembly are arranged along the same center line to make the magnetic field strength at the first voice coil and the second voice coil greater.

[0009] In one embodiment of the first aspect, the first magnetic yoke includes a first support portion and a first edge portion connected to the first support portion. The first edge portion is angled to the first support portion and is arranged around the first magnet. The first magnet is connected to the first support portion, and a first magnetic gap is formed between the first magnet and the first edge portion. The first voice coil extends at least partially into the first magnetic gap. The second magnetic yoke includes a second support portion and a second edge portion connected to the second support portion. The second edge portion is angled to the second support portion and is arranged around the second magnet. The second magnet is connected to the second support portion, and a second magnetic gap is formed between the second magnet and the second edge portion. The second voice coil extends at least partially into the second magnetic gap. The first and second support portions are used to constrain the magnetic lines of force between the first and second magnets. The first and second edge portions are used to constrain the magnetic lines of force in the first and second magnetic gaps, and to ensure that the magnetic circuit passes sequentially through the first and second edge portions, thereby reducing magnetic field loss.

[0010] In one embodiment of the first aspect, the width of the first magnetic gap is the same as the width of the second magnetic gap, so that the driving force acting on the first voice coil and the driving force acting on the second voice coil are the same.

[0011] In one embodiment of the first aspect, the first magnet has four first side surfaces surrounding the first magnet. The first edge portion includes four first segments spaced apart and arranged around the first magnet. Each first segment is parallel to a first side surface, and a first magnetic gap is formed between the first segment and its corresponding first side surface. The first segments can be formed by bending a cross-shaped flat plate edge for ease of processing. Simultaneously, the spaced-apart first segments increase the magnetic flux density gathered by each first segment, thereby increasing the magnetic flux density acting on a local area of ​​the first voice coil. The second magnet has four second side surfaces surrounding the second magnet. The second edge portion includes four second segments spaced apart and arranged around the second magnet. Each second segment is parallel to a second side surface, and a second magnetic gap is formed between the second segment and its corresponding second side surface. The second segments can also be formed by bending a cross-shaped flat plate edge for ease of processing. Simultaneously, the spaced-apart second segments increase the magnetic flux density gathered by each second segment, thereby increasing the magnetic flux density acting on the second voice coil.

[0012] In one embodiment of the first aspect, the first magnetic circuit assembly further includes a first side magnetic structure disposed within the first accommodating space and surrounding the first magnet. The magnetic pole direction of the first side magnetic structure is opposite to that of the first magnet, and a first magnetic gap is formed between the first side magnetic structure and the first magnet. The second magnetic circuit assembly further includes a second side magnetic structure disposed within the second accommodating space and surrounding the second magnet. The magnetic pole direction of the second side magnetic structure is opposite to that of the second magnet, and a second magnetic gap is formed between the second side magnetic structure and the second magnet. The magnetic pole directions of the first and second side magnetic structures are opposite. The first and second side magnetic structures can provide an external magnetic field for the speaker module, enhancing the magnetic field strength in the magnetic circuit formed by the speaker module, thereby further improving the driving force for the vibration of the first and second diaphragm assemblies.

[0013] In one embodiment of the first aspect, the first side magnetic structure includes a plurality of first side magnets, all disposed within the first accommodating space and arranged circumferentially around the first magnets; the second side magnetic structure includes a plurality of second side magnets, all disposed within the second accommodating space and arranged circumferentially around the second magnets. The arrangement of the plurality of first and second side magnets facilitates the fabrication of the first and second side magnetic structures, and allows for greater flexibility in the selection of their quantities.

[0014] In one embodiment of the first aspect, the first speaker and the second speaker are spaced apart, and it is not necessary to connect the first speaker and the second speaker to avoid introducing reliability issues, such as drops, assembly collisions, etc., thereby reducing the installation accuracy requirements of the first speaker and the second speaker, thus reducing the assembly difficulty, realizing the rapid assembly of the speaker module, and avoiding new process costs.

[0015] In one embodiment of the first aspect, the speaker module further includes a third magnet disposed between the first speaker and the second speaker. The magnetic pole direction of the third magnet is consistent with the magnetic 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. 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 thus increasing the amplitude of the first diaphragm assembly and the second diaphragm assembly.

[0016] 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 but spaced apart from the second speaker, or the third magnet is connected to the second speaker but spaced apart from the first speaker. In this way, it is not necessary to have a connection between the first speaker and the second speaker; only the third magnet needs to be placed on the first speaker or the second speaker, avoiding the introduction of reliability issues and reducing assembly difficulty. The third magnet may 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.

[0017] In one embodiment of the first aspect, the first support portion has a first clearance groove on the side facing the second support portion, and the third magnet is at least partially housed in the first clearance groove to reduce the distance between the first magnet and the second magnet.

[0018] In one embodiment of the first aspect, the first clearance 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.

[0019] In one embodiment of the first aspect, the second support portion has a second clearance groove on the side facing the second support portion, and the third magnet is at least partially housed in the second clearance groove to reduce the distance between the first magnet and the second magnet.

[0020] In one embodiment of the first aspect, the second clearance 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.

[0021] Secondly, an electronic device is provided, including the speaker module described in the above embodiments. By setting the speaker module, the electronic device reduces the generation of noise on the keyboard and improves the sound effect of the electronic device.

[0022] In one embodiment of the second aspect, the electronic device is a laptop computer, which includes a casing, a mid-plate, and a keyboard. The mid-plate is disposed within the casing, and the keyboard and the speaker module are fixedly connected to the mid-plate. The first speaker and the second speaker emit sound to the front and back of the mid-plate, respectively, to drive the first diaphragm assembly and the second diaphragm assembly to vibrate synchronously in opposite directions. This causes the first speaker and the second speaker to cancel out at least part of the opposing forces, thereby reducing the vibration of the mid-frame to a certain extent and thus reducing the generation of noise on the keyboard. Attached Figure Description

[0023] Figure 1 This is a magnetic circuit simulation diagram when the speaker is used alone.

[0024] Figure 2 This is a simulation diagram of the magnetic circuit of the current speaker module;

[0025] Figure 3 A three-dimensional structural diagram of a speaker module and a middle plate assembly provided in an embodiment of this application;

[0026] Figure 4 A three-dimensional structural diagram of a speaker module provided in an embodiment of this application;

[0027] Figure 5 for Figure 3 A partial exploded view of the speaker module and the middle plate;

[0028] Figure 6 for Figure 4 A cross-sectional view of the speaker module in the image;

[0029] Figure 7 for Figure 4 Exploded view of the speaker module in the image;

[0030] Figure 8 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15This is a partial cross-sectional view of the speaker module in different embodiments;

[0031] Figure 9 for Figure 8 A simulation diagram of the magnetic circuit of the speaker module. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first limiting part and the second limiting part are only used to distinguish different limiting parts and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0035] It should be noted that in this application, the terms "in one embodiment" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "in one embodiment" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "in one embodiment" or "for example" is intended to present the relevant concepts in a specific manner.

[0036] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0038] With the development of loudspeaker technology, people's demand for bass in electronic devices such as computers and mobile phones is increasing. To meet low-frequency response requirements, loudspeaker amplitude designs are becoming increasingly larger. Current loudspeakers include a diaphragm assembly, a voice coil 20' fixedly connected to the diaphragm assembly, a magnetic circuit assembly 10' disposed 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' can form a magnetic circuit (such as... 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. This displacement drives the diaphragm assembly to vibrate, which in turn vibrates the air to form sound waves, allowing the speaker to produce sound. Taking a laptop speaker as an example, the speaker is mounted on the middle plate inside the keyboard side casing. When the speaker is working, the vibration of the diaphragm assembly excites the keyboard through the middle plate, easily causing key resonance. When the keys resonate, they are prone to colliding with other structures on the casing, generating noise. This noise affects the speaker's sound reproduction and limits bass enhancement. To reduce the speaker's vibration output while improving bass performance, two identical pre-built speakers are often mounted back-to-back on the middle plate to form a speaker module. When this module is working, because the diaphragm assemblies of the two pre-built speakers face opposite directions, their vibration directions are also opposite, causing the vibrations from the two speakers to cancel each other out, thus reducing keyboard vibration and noise generation. However, because the magnetic poles of the two magnets in the speaker module are in opposite directions, the speaker module forms two symmetrical magnetic field loops. The magnetic fields of the two magnetic circuit components 10'' interact, causing some magnetic field lines to cancel each other out. The magnetic flux acting on the voice coil 20'' of each finished speaker (such as...) Figure 2 Area B in the text is compared to the finished speaker used alone (e.g., Figure 1 When the A region in the diagram is reduced, the magnetic circuit efficiency of each finished speaker is lower than when they are not assembled into a single unit, which affects the sound quality.

[0039] To address the aforementioned problems, this application provides a loudspeaker module 100 and an electronic device. Compared to current loudspeaker modules formed by directly connecting two identical loudspeakers in reverse, this loudspeaker module 100 increases the magnetic flux density in the magnetic gap, thereby increasing the magnetic field strength acting on the voice coil and improving magnetic circuit utilization efficiency. This electronic device is a type of electronic device incorporating this loudspeaker module 100, which reduces vibration-generated noise by replacing currently used standalone loudspeakers with the loudspeaker module 100 of this application.

[0040] Specifically, the electronic device includes, but is not limited to, mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, notebook computers, in-vehicle devices, and wearable devices. In the following embodiments, a notebook computer is used as the electronic device for description.

[0041] The electronic device includes a display and a keyboard unit. The display is used to show images, videos, etc. The keyboard unit is rotatably connected to the display. The keyboard unit is used to input commands and data, and controls the display to show images and videos based on the input commands and data. Simultaneously, the keyboard unit is also used to play voice or music. In this embodiment, the keyboard unit includes a housing, a middle plate 90, a keyboard, and a speaker module 100.

[0042] The outer casing protects the internal structure of the keyboard main unit. The middle plate 90 is located within the casing and serves as a supporting "skeleton" for the electronic components inside the keyboard main unit. See also... Figure 3 The keyboard and speaker module 100 are fixed to the middle plate 90 directly or indirectly. The keyboard is used to input commands and data. The speaker module 100 is used to convert audio electrical signals into sound signals. The keyboard host realizes voice and music playback through the speaker module 100.

[0043] Please combine Figure 4 The number of speaker modules 100 can be two, with the two speaker modules 100 disposed at both ends of the keyboard main unit in the width direction. The two speaker modules 100 have the same structure and are symmetrically arranged with respect to the keyboard casing. In other embodiments, the number of speaker modules 100 can also be one or more, and no specific limitation is made here. It should be noted that the position of the speaker modules 100 within the keyboard main unit can be flexibly arranged and is not specifically limited.

[0044] Please see Figure 4 The speaker module 100 includes a first speaker 10 and a second speaker 20. The middle plate 90 may have mounting holes 900, and both the first speaker 10 and the second speaker 20 are disposed within the mounting holes 900, facing opposite directions. For example, please refer to... Figure 5The middle plate 90 includes a first plate portion 91 and a second plate portion 92. The middle plate 90 has a mounting hole 900 that passes through the first plate portion 91 and the second plate portion 92. The mounting hole 900 includes a first hole segment 901 located in the first plate portion 91 and a second hole segment 902 located in the second plate portion 92. A first speaker 10 is mounted in the first hole segment 901, and a second speaker 20 is mounted in the second hole segment 902. The first plate portion 91 and the second plate portion 92 may be spaced apart.

[0045] Please see Figure 6 and Figure 7 The first loudspeaker 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 forms a first receiving space 101. The first magnet 112 is located within the first receiving space 101 and can be connected to the first magnetic yoke 111. The first voice coil 13 is located within the first receiving space 101 and is connected to the first diaphragm assembly 12.

[0046] 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 N pole and the S pole, respectively. In this embodiment, the N pole of the first magnet 112 is close to the first diaphragm assembly 12, and the S pole of the first magnet 112 is away from the first diaphragm assembly 12. The first magnet 112 radiates a magnetic field around itself. The magnetic field lines of the external magnetic field of the first magnet 112 originate from the N pole of the first magnet 112, enter the S pole, and pass through the voice coil. The magnetic field lines of the internal magnetic field of the first magnet 112 extend from the S pole to the N pole. The magnetic field lines 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 capable of generating a magnetic field such as an electromagnet.

[0047] The first magnetic yoke 111 can form a groove-shaped structure, and the first magnet 112 is disposed within the groove-shaped structure. The first magnet 112 is spaced apart from the groove wall of the groove-shaped structure to form a first magnetic gap 102 between the first magnet 112 and the groove wall of the groove-shaped structure. The first voice coil 13 can be a coil made of wire, and the end of the first voice coil 13 away from the first diaphragm assembly 12 can extend into the first magnetic gap 102. The first magnetic yoke 111 surrounds the outer periphery of the first magnet 112 to concentrate the magnetic lines of force emitted by the first magnet 112 into the first magnetic yoke 111, so that more magnetic lines of force can pass through the first voice coil 13. When energized, the first voice coil 13 generates an induced magnetic field. At this time, the first voice coil 13 can be displaced under the magnetic force of the first magnet 112, and drive the first diaphragm assembly 12 to vibrate. The 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 metallic material that can be attracted by a magnet, such as iron, nickel, cobalt, or a metal alloy containing iron, nickel, and cobalt.

[0048] The first diaphragm assembly 12 includes a first diaphragm sheet 121 and a first dome ring 122. The first dome ring 122 is disposed around the edge of the first diaphragm sheet 121 and is connected to the first magnetic yoke 111. The first dome ring 122 has a flat portion, which is used to connect to the side of the first diaphragm sheet 121 facing the first receiving space 101. The first voice coil 13 is connected to the side of the flat portion away from the first diaphragm sheet 121 by means of adhesive or the like.

[0049] Please see Figure 6 and Figure 7 The second loudspeaker 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 forms a second receiving space 201. The second magnet 212 is located within the second receiving space 201 and can be connected to the second magnetic yoke 211. The second voice coil 23 is located within the second receiving space 201 and connected to the second diaphragm assembly 22.

[0050] The second magnet 212 has two magnetic poles with opposite magnetic properties. One pole of the second magnet 212 is close to the second diaphragm assembly 22, and the other pole is away from the second diaphragm assembly 22. The two poles of the second magnet 212 are the N pole and the S pole, respectively. In this embodiment, the N pole of the second magnet 212 is away from the second diaphragm assembly 22, and the S pole of the second magnet 212 is close to the second diaphragm assembly 22. The second magnet 212 radiates a magnetic field around itself. The magnetic field lines of the external magnetic field of the second magnet 212 originate from the N pole of the second magnet 212, enter the S pole, and pass through the voice coil. The magnetic field lines of the internal magnetic field of the second magnet 212 extend from the S pole to the N pole. The magnetic field lines 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 capable of generating a magnetic field such as an electromagnet.

[0051] The second magnetic yoke 211 can form a groove-shaped structure, and the second magnet 212 is disposed within the groove-shaped structure. The second magnet 212 is spaced apart from the groove wall of the groove-shaped structure to form a second magnetic gap 202 between the second magnet 212 and the groove wall of the groove-shaped structure. The second voice coil 23 can be a coil made of wire, and the two ends of the second voice coil 23 away from the second diaphragm assembly 22 can extend into the second magnetic gap 202. The second magnetic yoke 211 surrounds the outer periphery of the second magnet 212 to concentrate the magnetic lines of force emitted by the second magnet 212 into the second magnetic yoke 211, so that more magnetic lines of force can pass through the second voice coil 23. When energized, the second voice coil 23 generates an induced magnetic field. At this time, the second voice coil 23 can be displaced under the magnetic force of the second magnet 212, and drive the second diaphragm assembly 22 to vibrate. The 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.

[0052] The second diaphragm assembly 22 includes a second diaphragm sheet 221 and a second dome ring 222. The second dome ring 222 is disposed around the edge of the second diaphragm sheet 221 and is connected to the second magnetic yoke 211. The second dome ring 222 has a flat portion, which is used to connect to the side of the second diaphragm sheet 221 facing the second receiving space 201. The second voice coil 23 is connected to the side of the flat portion away from the second diaphragm sheet 221 by means of adhesive or other methods.

[0053] In the speaker module 100, the first speaker 10 and the second speaker 20 are stacked in opposite directions. 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 apart from each other, and the orientation of the first diaphragm assembly 12 is opposite to the orientation of the second diaphragm assembly 22. At this time, the first speaker 10 and the second speaker 20 emit sound in opposite directions.

[0054] In the speaker module 100, the magnetic poles of the first magnet 112 and the second magnet 212 are aligned. 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 together form a magnetic flux loop. The magnetic fields of the first magnet 112 and the second magnet 212 are superimposed on each other, and the magnetic field strength of the first speaker 10 and the second speaker 20 is increased compared to when they are used alone. 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 where the magnetic 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.

[0055] It should be noted that the magnetic pole direction mentioned above refers to the direction from the N pole to the S pole inside the magnet. In this embodiment, the magnetic pole direction of the first magnet 112 and the second magnet 212 in the speaker module 100 is from the first diaphragm assembly 12 to the second diaphragm assembly 22. At this time, the first magnet 112 and the second magnet 212 of the speaker module 100 form a magnetic circuit. The path of this magnetic circuit is: S pole inside the first magnet 112 - N pole inside the first magnet 112 - first magnetic gap 102 - side wall of the first magnetic yoke 111 - side wall of the second magnetic yoke 211 - second magnetic gap 202 - S pole inside the second magnet 212 - N pole inside the second magnet 212 - bottom wall of the second magnetic yoke 211 - bottom wall of the first magnetic yoke 111 - S pole of the first magnet 112. In other embodiments, the magnetic pole directions of the first magnet 112 and the second magnet 212 may both be from the second diaphragm assembly 22 to the first diaphragm assembly 12. In this case, 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 will not be elaborated here.

[0056] In use, currents in opposite directions can be applied to the first voice coil 13 and the second voice coil 23. The magnetic forces generated by the first voice coil 13 and the second voice coil 23 through electromagnetic induction are in the same direction. The magnetic current direction in the first magnetic gap 102 is opposite to the magnetic current direction in the second magnetic gap 202. Therefore, the first voice coil 13 and the second voice coil 23 can move synchronously in opposite directions to drive the first diaphragm assembly 12 and the second diaphragm assembly 22 to vibrate synchronously in opposite directions. This allows the first speaker 10 and the second speaker 20 to cancel out at least part of the opposing forces, thereby reducing the vibration of the middle frame to a certain extent and thus reducing the generation of noise on the keyboard.

[0057] 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 configured with opposite magnetic pole directions. During manufacturing, the two finished speakers can be directly installed in reverse so that the installation directions of the two finished speakers are 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, thus forming the speaker module 100 of this application. At this time, due to the reverse installation of the first speaker 10 and the second speaker 20, the magnetic pole directions of the first magnet 112 and the second magnet 212 are consistent, so as to form a stronger magnetic flux loop. The two finished speakers can be quickly assembled to form the speaker module 100 of this application, saving costs and providing high 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 structure of each speaker when manufacturing the integrated speaker module 100.

[0058] Current loudspeakers typically have a center magnet and side magnets. The side magnets surround the center magnet to constrain the magnetic field lines, and a magnetic gap is formed between the center magnet and the side magnets. For this type of loudspeaker, assembly requires separate positioning of the center magnet and side magnets, which is time-consuming and labor-intensive. Furthermore, if two loudspeakers of this type are assembled in reverse, the magnetic pole directions of both the center magnet and the side magnets need to be set accordingly. Since the side magnets not only constrain the magnetic field lines but also generate and guide them, the side magnets of the two loudspeakers need to be aligned. Large alignment errors in the side magnets will affect the direction and strength of the magnetic circuit. Additionally, when two loudspeakers are connected in reverse, the magnetic field lines between the two center magnets are easily affected by the magnetic force of the side magnets, changing their direction and affecting the overall magnetic field strength of the loudspeaker module.

[0059] In this speaker module 100, the magnetic lines of force are constrained by 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 within the first magnetic yoke 111 and the second magnetic yoke 211. This increases 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 less expensive, has a simpler structure, eliminates the step of setting the magnetic pole direction of the side magnet magnetic circuit, and reduces the influence of the error in the arrangement position of the first speaker 10 and the second speaker 20 on the magnetic field, making the assembly of the speaker module 100 faster and more convenient. Taking the first speaker 10 as an example, please refer to... Figure 6The first magnetic gap 102 is formed by the sidewall of the first magnetic yoke 111 and the first magnet 112. During assembly, only the installation position of the first magnet 112 needs to be determined, without considering the position of the side magnets. Furthermore, the width of the first magnetic gap 102 is fixed at all points around the first magnet 112, facilitating rapid assembly of the first speaker 10. The first magnetic yoke 111, surrounding the first magnet 112, protects the first magnet 112 without requiring a separate protective housing, thus saving costs. The second magnetic yoke 211 has the same function for the second speaker 20, which will not be elaborated here. It should be noted that the width of the first magnetic gap 102 refers to the distance between the first magnet 112 and the sidewall of the first magnetic yoke 111.

[0060] When the first speaker 10 and the second speaker 20 are assembled in reverse to form the speaker module 100, the magnetic field in the speaker module 100 is generated only by the first magnet 112 and the second magnet 212. Compared with a speaker module with side magnets, this speaker module 100 eliminates the interference of side magnets. In addition, the first magnetic yoke 111 and the second magnetic yoke 211 in the speaker module 100 not only constrain the magnetic lines of force, but also isolate the first magnetic gap 102 and the second magnetic gap 202, preventing airflow between the first magnetic gap 102 and the second magnetic gap 202 from affecting the first voice coil 13 and the second voice coil 23.

[0061] Specifically, please refer to Figure 6 and Figure 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 set at an angle to the first support portion 1111, so that the first support portion 1111 and the first edge portion 1112 together form a groove-shaped structure. The first support portion 1111 forms the bottom wall of the groove-shaped structure, and the first edge portion 1112 forms the side wall of the groove-shaped structure. Both the first edge portion 1112 and the first support portion 1111 are plate-shaped. The first edge portion 1112 may 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 surrounding the first magnet 112. The first edge portion 1112 and the first magnet 112 are spaced apart, forming a first magnetic gap 102.

[0062] 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 set at an angle to the second support portion 2111, so that the second support portion 2111 and the second edge portion 2112 together form a groove-shaped structure. The second support portion 2111 forms the bottom wall of the groove-shaped structure, and the second edge portion 2112 forms the side wall of the groove-shaped structure. Both the second edge portion 2112 and the second support portion 2111 are plate-shaped. 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, and the second edge portion 2112 circumferentially surrounds the second magnet 212. The second edge portion 2112 and the second magnet 212 are spaced apart, forming a second magnetic gap 202.

[0063] For example, please refer to Figure 6 and Figure 7 The first magnet 112 is a cuboid, having a first top surface, a first bottom surface, and first side surfaces. The first top surface and the first bottom surface face away from each other. There are four first side surfaces, all with equal areas, arranged in a ring around the first top and first bottom surfaces. The included angle between adjacent first side surfaces is 90°. The first support portion 1111 has a square cross-section. Figure 6 The first edge portion 1112 includes four first portions 1112a, which are arranged around the edge of the first support portion 1111 and are all perpendicular to the first support portion 1111. A first bottom surface is connected to the first support portion 1111, and each first 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. The first bottom surface of the first magnet 112 can be glued to the first support portion 1111, or bolt holes can be machined into the first magnet 112 and the first support portion 1111, and bolts can be inserted into these bolt holes to fix the first magnet 112 to the first support portion 1111.

[0064] The second magnet 212 is a cuboid, having a second top surface, a second bottom surface, and second side surfaces. The second top surface and the second bottom surface face away from each other. There are four second side surfaces, all with equal areas, arranged in a ring around the second top surface and the second bottom surface. The included angle between adjacent second side surfaces is 90°. The cross-section of the second support portion 2111 is square. Figure 7The second edge portion 2112 includes four second portions 2112a, which are arranged around the edge of the second support portion 2111 and are all perpendicular to the second support portion 2111. The second bottom surface is connected to the second support portion 2111, and each second portion 2112a is parallel to a second side surface of the second magnet 212. The second support portion 2111 and the second edge portion 2112 are integrally formed. The second bottom surface of the second magnet 212 can be glued to the second support portion 2111, or bolt holes can be machined into the second magnet 212 and the second support portion 2111, and bolts can be inserted into these bolt holes to fix the second magnet 212 to the second support portion 2111.

[0065] In one embodiment, a first magnetic gap 102 is formed between each first portion 1112a and its corresponding first side surface. The widths of the first magnetic gaps 102 formed between the four first portions 1112a and their corresponding first side surfaces are equal, so that the driving force acting on the first voice coil 13 is uniform. A second magnetic gap 202 is formed between each second portion 2112a and its corresponding second side surface. The widths of the second magnetic gaps 202 formed between the four second portions 2112a and their corresponding second side surfaces are equal, so that the driving force acting on the second voice coil 23 is uniform.

[0066] Optionally, the four first portions 1112a are spaced apart. In this case, the first portions 1112a can be formed by bending the edges of a cross-shaped flat plate for ease of processing. Simultaneously, the spaced-apart first portions 1112a increase the magnetic flux density converged by each first portion 1112a, thereby increasing the magnetic flux density acting on the local area of ​​the first voice coil 13. The sidewall area of ​​the groove-shaped structure formed by the first portions 1112a is the same as the area of ​​the first side surface of the first magnet 112, so that the magnetic flux lines in the first magnetic gap 102 are uniformly distributed.

[0067] Four second portions 2112a are spaced apart. Each second portion 2112a can be formed by bending the edge of a cross-shaped flat plate for ease of processing. Simultaneously, the spaced-apart second portions 2112a increase the magnetic flux density converged by each second portion 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 portions 2112a is the same as the area of ​​the second side surface of the second magnet 212, ensuring a uniform distribution of magnetic flux lines in the second magnetic gap 202.

[0068] To improve the confinement of magnetic field lines, please refer to Figure 6 and Figure 7The first magnetic circuit assembly 11 further includes a first central yoke 14. A first magnet 112 is sandwiched between the first magnetic yoke 111 and the first central yoke 14, meaning the first central yoke 14 is connected to the first top surface of the first magnet 112, forming a magnetic gap between the first central yoke 14 and the first edge portion 1112. The first central yoke 14 constrains the magnetic lines of force emanating from the first top surface of the first magnet 112, causing these lines to emanate 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 means of adhesive bonding, snap-fitting, or threaded connection. The first central yoke 14 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. The first diaphragm assembly 12 is spaced apart from the first central yoke 14 to avoid affecting the vibration of the first diaphragm assembly 12. Optionally, the cross-sectional shape of the first central magnetic yoke 14 is a square with the same cross-sectional shape as the first magnet 112, and the edge of the first central magnetic yoke 14 is flush with the first side surface of the first magnet 112, so as to constrain all the magnetic lines of force emitted from the first top surface of the first magnet 112.

[0069] The second magnetic circuit assembly 21 also includes a second central yoke 24. The second magnet 212 is sandwiched between the second magnetic yoke 211 and the second central yoke 24, that is, the second central yoke 24 is connected to the second top surface of the second magnet 212. At this time, a magnetic gap is formed between the second central yoke 24 and the second edge portion 2112. The second central yoke 24 is used to constrain the magnetic lines of force emanating from the second top surface of the second magnet 212, and to make the magnetic lines of force emanate from 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 means of adhesive, snap-fit, threaded connection, etc. The second central yoke 24 can be 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. The second diaphragm assembly 22 is spaced apart from the second central yoke 24 to avoid affecting the vibration of the second diaphragm assembly 22. Optionally, the cross-sectional shape of the second central magnetic yoke 24 is a square with the same cross-sectional shape as the second magnet 212, and the edge of the second central magnetic yoke 24 is flush with the second side surface of the second magnet 212, so as to constrain all the magnetic lines of force emitted from the second top surface of the second magnet 212.

[0070] 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 side magnetic structure. The first side magnetic structure is disposed within the first accommodating space and surrounds the first magnet 112. The first side magnetic structure can be connected to the first magnetic yoke 111, specifically, the first side magnetic structure abuts against the first edge portion 1112, and a first magnetic gap 102 is formed between the first side magnetic structure and the first magnet 112. The first side magnetic structure is magnetic, and the direction of the magnetic poles of the first side magnetic structure is opposite to the direction of the magnetic poles of the first magnet 112. That is, when the N pole of the first magnet 112 is close to the first diaphragm assembly 12 and the S pole is far away from the first diaphragm assembly 12, the S pole of the first side magnetic structure is close to the first diaphragm assembly 12 and the N pole is far away from the first diaphragm assembly 12. The first side 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 improving the driving force for the vibration of the first diaphragm assembly 12.

[0071] Specifically, the first side magnetic structure includes multiple first side magnets, all disposed within the first accommodating space and arranged circumferentially around the first magnet 112. The arrangement of multiple first side magnets facilitates the fabrication of the first side magnetic structure and allows for greater flexibility in the selection of their quantity. The magnetic pole directions of the multiple first side magnets are all the same and opposite to those of the first magnet 112; that is, the S pole of each first side magnet is close to the first diaphragm assembly 12, and the N pole is far from the first diaphragm assembly 12. The first side magnets can be sequentially connected end-to-end to form a ring structure surrounding the first magnet 112, providing a greater magnetic field strength. The first side magnets can also be arranged circumferentially around the first magnet 112 at intervals to improve the flexibility of their installation. The number of first side magnets can be two, with each first side magnet disposed on opposite sides of the first magnet 112, and each first side magnet connected to a corresponding first portion 1112a. The number of first-side magnets can also be four, with each of the four first-side magnets connected to a first section 1112a. In this case, the four first-side magnets are arranged at equal intervals.

[0072] The second magnetic circuit assembly 21 may further include a second magnetic yoke 211, a second magnet 212, a second central magnetic yoke 24, and a second side magnetic structure. The second side magnetic structure is disposed within the second accommodating space and surrounds the second magnet 212. This second side magnetic structure can be connected to the second magnetic yoke 211, specifically by abutting against the second edge portion 2112, forming a second magnetic gap 202 between the second side magnetic structure and the second magnet 212. The second side magnetic structure is magnetic, and the magnetic pole direction of the second side magnetic structure is opposite to that of the magnetic pole direction of the second magnet 212. That is, when the N pole of the second magnet 212 is close to the second diaphragm assembly 22 and the S pole is far away from the second diaphragm assembly 22, the S pole of the second side magnetic structure is close to the second diaphragm assembly 22, and the N pole is far away from the second diaphragm assembly 22. At this time, the magnetic pole direction of the second side magnetic structure is opposite to that of the first side magnetic structure. The second 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.

[0073] Specifically, the second side magnetic structure includes multiple second side magnets, all disposed within the second accommodating space and arranged circumferentially around the second magnet 212. The arrangement of multiple second side magnets facilitates the fabrication of the second side magnetic structure and allows for greater flexibility in the selection of their quantity. The magnetic pole directions of the multiple second side magnets are all the same and opposite to those of the second magnet 212; that is, the S pole of each second side magnet is close to the second diaphragm assembly 22, and the N pole is far from the second diaphragm assembly 22. The second side magnets can be sequentially connected end-to-end to form a ring structure surrounding the second magnet 212, providing a greater magnetic field strength. The second side magnets can also be arranged at intervals circumferentially around the second magnet 212 to improve the flexibility of their installation. The number of second side magnets can be two, with each second side magnet disposed on opposite sides of the second magnet 212, and each second side magnet connected to a corresponding second portion 2112a. The number of second-side magnets can also be four, with each of the four second-side magnets connected to a second section 2112a. In this case, the four second-side magnets are arranged at equal intervals.

[0074] The first magnetic yoke 111 can be directly connected to the first diaphragm assembly 12, or it can be connected 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; there are no restrictions 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 a speaker with a side magnet, connecting the first magnetic yoke 111 and the first diaphragm assembly 12 simplifies the speaker's structure, saves processing steps, and reduces the speaker's size, because a side magnet generally cannot be directly connected to the first diaphragm assembly 12.

[0075] The second magnetic yoke 211 can be directly connected to the second diaphragm assembly 22, or it can be connected 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; there are no restrictions 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 a speaker with a side magnet, connecting the second magnetic yoke 211 and the second diaphragm assembly 22 simplifies the speaker's structure, saves processing steps, and reduces the speaker's size, because a side magnet generally cannot be directly connected to the first diaphragm assembly 22.

[0076] In one embodiment, please refer to Figure 6 The first speaker 10 also includes a first support frame 15. The first magnetic yoke 111 and the first diaphragm assembly 12 are connected through the first support frame 15. The first support frame 15 is located between the first magnetic yoke 111 and the first diaphragm assembly 12. Compared to a speaker where 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 first voice coil 13. The first voice coil 13 can be a longer coil to increase the induced magnetic field of the coil, 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 middle plate 90 through the first support frame 15, specifically by mounting it within the first hole section 901 through the first support frame 15.

[0077] The second speaker 20 also includes a second support frame 25. The second magnetic yoke 211 and the second diaphragm assembly 22 are connected through the second support frame 25. The second support frame 25 is located between the second magnetic yoke 211 and the second diaphragm assembly 22. Compared to a speaker where the second diaphragm assembly 22 and the second magnetic yoke 211 are directly connected, the second speaker 20 in this embodiment increases the distance between the second diaphragm assembly 22 and the second magnetic gap 202, providing more space for the second voice coil 23. The second voice coil 23 can be a longer coil 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 middle plate 90 through the second support frame 25, specifically by mounting it within the second hole section 902 through the second support frame 25.

[0078] The first support frame 15 and the second support frame 25 can be directly connected to form a single unit for the first speaker 10 and the second speaker 20. Alternatively, the first support frame 15 and the second support frame 25 can be mounted on other components of the keyboard, such as indirectly connected via the middle plate 90. Figure 3 The positions of the first speaker 10 and the second speaker 20 are defined. Specifically, the first support frame 15 is connected to the first plate 91, the second support frame 25 is connected to the second plate 92, and the first plate 91 and the second plate 92 are connected to form the middle plate 90.

[0079] In one embodiment, the first speaker 10 and the second speaker 20 are the same size and model, and are aligned. It is understood 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 along 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 perfectly aligned or perfectly parallel; approximate alignment and parallelism are sufficient to reduce limitations on installation accuracy and facilitate rapid installation. Simultaneously, the magnetic flux density in the first magnetic gap 102 and the second magnetic gap 202 is the same, resulting in similar vibration amplitudes for the first diaphragm assembly 12 and the second diaphragm assembly 22, reducing noise generation.

[0080] As one example, please refer to Figure 8 and Figure 9 The first speaker 10 and the second speaker 20 are in contact, that is, the first magnetic yoke 111 and the second magnetic yoke 211 are in contact, so as to reduce the distance between the first magnet 112 and the second magnet 212, thereby increasing the superposition effect of the magnetic fields between the first magnet 112 and the second magnet 212 (e.g., Figure 9 (Region C in the text). Simultaneously, the magnetic field lines 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, reducing magnetic leakage. The first support portion 1111 and the second support portion 2111 can be fixedly connected by adhesive, welding, or other methods, or they can simply support each other without a fixed connection; no restriction is imposed here.

[0081] As one example, please refer to Figure 10The 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, avoiding reliability issues such as drops or assembly collisions. It also reduces the precision requirements for the installation of 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 lines of force between the first magnet 112 and the second magnet 212 are 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 is reduced in this embodiment compared to the embodiment where 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, just enough to accommodate the installation tolerance. For the speaker module 100 on a laptop, the distance between the first speaker 10 and the second speaker 20 can be controlled within 0.4-0.8mm.

[0082] As one example, please refer to Figure 11 and Figure 12The speaker module 100 also includes a third magnet 30. The first speaker 10 and the second speaker 20 are spaced apart, 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, it is not necessary to set a connection between the first speaker 10 and the second speaker 20; the third magnet 30 only needs to be set on the first speaker 10 or the second speaker 20, avoiding the introduction of 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 direction of the third magnet 30 is consistent with the magnetic pole direction of the first magnet 112 and the magnetic pole direction of the second magnet 212, that is, the same magnetic pole of the first magnet 112, the second magnet 212 and the third magnet 30 have the same orientation. 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 are superimposed with the magnetic circuits in the first speaker 10 and the second speaker 20. Compared with the 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 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 either the first speaker 10 or the second speaker 20. Instead, it may be positioned through other structures. This is not a limitation.

[0083] Optionally, both the first support portion 1111 and the second support portion 2111 are closed plate structures, meaning that neither the first support portion 1111 nor the second support portion 2111 has through holes. 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 assembly difficulty. Please refer to [link / reference]. Figure 13 and Figure 14The third magnet 30 can also be connected to both the first support portion 1111 and the second support portion 2111 simultaneously. 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, in order 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 means of bonding, welding, etc., or it can simply be clamped between the first support portion 1111 and the second support portion 2111, without any fixed connection between the third magnet 30 and the first support portion 1111 and the second support portion 2111. This is not a limitation. The cross-sectional area of ​​the third magnet 30 can be the same as that 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.

[0084] Optional, please refer to Figure 13 The first magnetic yoke 111 has a first clearance groove 103 on the side facing the second magnetic yoke 211. Specifically, the first support part 1111 has a first clearance groove 103 on the side facing the second support part 2111. The second support part 2111 is a closed plate structure. The third magnet 30 is at least partially housed in the first clearance groove 103 to reduce the distance between the first magnet 112 and the second magnet 212. Compared with the embodiment where both the first support part 1111 and the second support part 2111 are 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. The first clearance groove 103 can be a through groove, with the third magnet 30 abutting against the first magnet 112, so that the magnetic lines of force of the third magnet 30 directly connect with 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 be spaced apart, and the first magnetic yoke 111 and the second magnetic yoke 211 can abut against each other or be spaced apart. The third magnet 30 can be fixedly connected to the bottom wall of the first clearance groove 103 or the first magnet 112 by means of bonding, welding, etc., without limitation.

[0085] Optional, please refer to Figure 14The second magnetic yoke 211 has a second clearance groove 203 on the side facing the first magnetic yoke 111. Specifically, the second support part 2111 has a second clearance groove 203 on the side facing the first support part 1111. The first support part 1111 is a closed plate structure. The third magnet 30 is at least partially housed in the second clearance groove 203 to reduce the distance between the first magnet 112 and the second magnet 212. Compared with the embodiment where both the first support part 1111 and the second support part 2111 are 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. The second clearance groove 203 can be a through groove, and the third magnet 30 abuts against 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 against the first support part 1111 or be spaced apart, and the first magnetic yoke 111 and the second magnetic yoke 211 can abut against each other or be spaced apart. The third magnet 30 can be fixedly connected to the bottom wall of the second clearance groove 203 or the second magnet 212 by means of bonding, welding, etc., which is not limited here.

[0086] Optional, please refer to Figure 15 The first support portion 1111 has a first clearance groove 103, and the second support portion 2111 has a second clearance groove 203. The third magnet 30 is partially housed in the first clearance groove 103 and partially housed in the second clearance groove 203. Compared to cases where only the first clearance groove 103 or only the second clearance 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. Both the first clearance groove 103 and the second clearance groove 203 can 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 effectively 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 support part 1111 and the second support part 2111 can abut against each other or be spaced apart.

[0087] Finally, it should be noted that the above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A speaker module, characterized in that, include: A first loudspeaker includes a first magnetic circuit assembly, a first voice coil, and a first diaphragm assembly. The first magnetic circuit assembly includes a first magnetic yoke and a first magnet. The first diaphragm assembly and the first magnetic yoke together form a first accommodating space. The first magnet and the first voice coil are located within the first accommodating space. The first voice coil is arranged around the first magnet and connected to the first diaphragm assembly. The second loudspeaker is stacked in reverse order of the first loudspeaker. The second loudspeaker includes a second magnetic circuit assembly, a second voice coil, and a second diaphragm assembly. The second magnetic circuit assembly includes a second magnetic yoke and a second magnet. The second diaphragm assembly and the second magnetic yoke together form a second accommodating space. The second magnet and the second voice coil are located in the second accommodating space. The second voice coil is arranged around the second magnet and connected to the second diaphragm assembly. The magnetic poles of the first magnet and the second magnet are aligned, the first speaker and the second speaker are spaced apart, and the distance between the first speaker and the second speaker is 0.4-0.8 mm.

2. The speaker module according to claim 1, characterized in that, The first speaker further includes a first central yoke, which together with the first magnetic yoke clamps the first magnet; the second speaker further includes a second central yoke, which together with the second magnetic yoke clamps the second magnet.

3. The speaker module according to claim 2, characterized in that, The first loudspeaker further includes a first support frame connected between the first diaphragm assembly and the first magnetic yoke; the second loudspeaker 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, characterized in that, The first magnetic yoke, the first voice coil, the first diaphragm assembly, the second magnetic yoke, the second voice coil, and the second diaphragm assembly are arranged along the same center line.

5. The loudspeaker module according to any one of claims 1 to 4, characterized in that, The first magnetic yoke includes a first support portion and a first edge portion connected to the first support portion. The first edge portion is set at an angle to the first support portion. The first edge portion is arranged around the first magnet. The first magnet is connected to the first support portion. A first magnetic gap is formed between the first magnet and the first edge portion. The first voice coil extends at least partially into the first magnetic gap. The second magnetic yoke includes a second support portion and a second edge portion connected to the second support portion. The second edge portion is set at an angle to the second support portion. The second edge portion is arranged around the second magnet. The second magnet is connected to the second support portion. A second magnetic gap is formed between the second magnet and the second edge portion. The second voice coil extends at least partially 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, characterized in that, The first magnet has four first side surfaces surrounding it. The first edge portion includes four first segments that are spaced apart from each other and are arranged around the first magnet. Each first segment is parallel to a first side surface, and a first magnetic gap is formed between the first segment and the corresponding first side surface. The second magnet has four second side surfaces surrounding it. The second edge portion includes four second segments that are spaced apart from each other and are arranged around the second magnet. Each second segment is parallel to a second side surface, and a second magnetic gap is formed between the second segment and the corresponding second side surface.

8. The loudspeaker module according to any one of claims 1 to 4, characterized in that, The first magnetic circuit assembly further includes a first side magnetic structure, which is disposed within the first accommodating space and surrounds the first magnet. The magnetic pole direction of the first side magnetic structure is opposite to that of the first magnet, and a first magnetic gap is formed between the first side magnetic structure and the first magnet. The second magnetic circuit assembly further includes a second side magnetic structure, which is disposed within the second accommodating space and surrounds the second magnet. The magnetic pole direction of the second side magnetic structure is opposite to that of the second magnet, and a second magnetic gap is formed between the second side magnetic structure and the second magnet.

9. The speaker module according to claim 8, characterized in that, The first side magnetic structure includes a plurality of first side magnets, all of which are disposed within the first accommodating space and arranged circumferentially around the first magnets; the second side magnetic structure includes a plurality of second side magnets, all of which are disposed within the second accommodating space and arranged circumferentially around the second magnets.

10. 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, wherein the magnetic pole direction of the third magnet is consistent with the magnetic pole direction of the first magnet and the second magnet.

11. The loudspeaker module according to claim 10, characterized in that, The third magnet is connected to at least one of the first speaker and the second speaker.

12. The speaker module according to claim 10, characterized in that, The first magnetic yoke has a first clearance groove on the side facing the second magnetic yoke, and the third magnet is at least partially housed in the first clearance groove.

13. The loudspeaker module according to claim 12, characterized in that, The first clearance groove is a through groove, and the third magnet is connected to the first magnet.

14. The speaker module according to claim 12 or 13, characterized in that, The second magnetic yoke has a second clearance groove on the side facing the first magnetic yoke, and the third magnet is at least partially housed in the second clearance groove.

15. The speaker module according to claim 14, characterized in that, The second clearance groove is a through groove, and the third magnet is connected to the second magnet.

16. An electronic device, characterized in that, Includes the speaker module as described in any one of claims 1 to 15.

17. The electronic device according to claim 16, characterized in that, The electronic device is a laptop computer, which includes a shell, a middle plate, and a keyboard. The middle plate is disposed inside the shell, and the keyboard and the speaker module are fixedly connected to the middle plate. The first speaker and the second speaker emit sound to the front and back of the middle plate, respectively.

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