Loudspeaker and electronic equipment

Abstract

The utility model discloses a loudspeaker and electronic equipment, and belongs to the technical field of electronic equipment. The loudspeaker comprises a vibration system, the vibration system comprises a voice coil, and the voice coil is provided with main electromagnetic sections which are oppositely arranged; the magnetic circuit system comprises a first magnet, the first magnet comprises a plurality of magnet structures, and the plurality of magnet structures are arranged side by side; the plurality of magnet structures comprise at least one pair of same transverse magnet structures, the two same transverse magnet structures in each pair are transversely magnetized, the magnetizing directions are the same, and the two same transverse magnet structures in the outermost pair of all the same transverse magnet structures are main magnet structures; and the positions of the two oppositely arranged main electromagnetic sections correspond to the positions of the two main magnet structures respectively. The concentrated magnetic lines improve the magnetic induction intensity around the voice coil, and the voice coil is subjected to larger electromagnetic force, so that the vibrating diaphragm is driven to generate stronger vibration, the volume output of the loudspeaker is increased, and more excellent hearing experience is brought to a user.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, and particularly to a loudspeaker and an electronic device. Background Art

[0002] As an electronic device that converts electrical energy into sound energy, a loudspeaker is widely used in various electronic devices.

[0003] Common loudspeakers can be classified into moving coil loudspeakers, electrostatic loudspeakers, piezoelectric loudspeakers, permanent magnet loudspeakers, etc. according to different sound generation principles. Among them, moving coil loudspeakers are commonly used in mobile terminals such as mobile phones and tablet computers due to their simple structure, easy production, and excellent performance.

[0004] In related technologies, a moving coil loudspeaker generally includes a vibration system and a magnetic circuit system. Among them, the magnetic circuit system includes a magnetic bowl arranged on the inner bottom surface of a bracket and a magnet arranged in the magnetic bowl. The outer wall of the magnet and the inner wall of the magnetic bowl form a magnetic gap; the vibration system includes a diaphragm arranged at the open end of the bracket, a dome arranged in the middle of the diaphragm, and a voice coil connected to the lower end of the dome and inserted into the magnetic gap. When an electric current flows through the voice coil, an Ampere force will be generated. The voice coil moves in the magnetic gap under the action of the Ampere force to drive the diaphragm to vibrate. The vibrating diaphragm repeatedly pushes the air to emit sound.

[0005] The magnetic circuit system design of traditional loudspeakers is relatively single, usually adopting a simple layout of a whole magnet. Due to the dispersion of the magnetic field line distribution, the force on the voice coil in the magnetic field is uneven and unstable, which is likely to cause sound distortion. It is difficult to accurately restore the unique timbres of various musical instruments and the delicate emotions of human voices when playing music, greatly reducing the clarity and fidelity of the sound quality. At the same time, the non-concentrated magnetic field lines result in a relatively low magnetic induction intensity around the voice coil, limited electromagnetic force on the voice coil, and thus insufficient vibration intensity of the diaphragm driven by the voice coil. The volume output of the loudspeaker is also limited, and it is impossible to provide users with an excellent auditory experience in different environments. Utility Model Content

[0006] This application provides a loudspeaker and an electronic device. This loudspeaker can improve the sound quality of the loudspeaker without affecting the overall size.

[0007] To achieve the above object, the embodiments of this application adopt the following technical solutions:

[0008] In a first aspect, a loudspeaker is provided. The loudspeaker includes: a vibration system, the vibration system includes a voice coil, and the voice coil has a main electromagnetic segment arranged oppositely; a magnetic circuit system, the magnetic circuit system includes a first magnet, the first magnet includes a plurality of magnet structures, and the plurality of magnet structures are arranged side by side; at least a pair of same-horizontal magnet structures are included in the plurality of magnet structures, wherein, the two same-horizontal magnet structures in each pair are both horizontally magnetized and have the same magnetization direction, and the two same-horizontal magnet structures of the outermost pair among all the same-horizontal magnet structures are both main magnet structures; the positions of the two oppositely arranged main electromagnetic segments respectively correspond to the positions of the two main magnet structures.

[0009] For the loudspeaker provided by the embodiment of the present application, a plurality of magnet structures are arranged side by side and specific same-horizontal magnet structures are adopted, and the magnetization directions of the same-horizontal magnet structures are the same. This makes the magnetic field lines more inclined to concentrate around the main electromagnetic segment of the voice coil. The concentrated magnetic field line distribution makes the force on the voice coil in the magnetic field more uniform and stable, greatly reducing the sound distortion. At the same time, the concentrated magnetic field lines increase the magnetic induction intensity around the voice coil, and the voice coil receives a greater electromagnetic force, thereby driving the diaphragm to generate stronger vibrations, and further increasing the volume output of the loudspeaker, bringing a better auditory experience to the user.

[0010] In one embodiment, the widths of the two main magnet structures are greater than the widths of the other magnet structures. The two main magnet structures have greater widths, which enables them to generate a stronger magnetic field.

[0011] In one embodiment, the plurality of magnet structures are all strip magnets, and the plurality of strip magnets are arranged side by side in sequence along the short side direction of the magnetic circuit system. The strip magnets are arranged side by side in sequence along the short side direction of the magnetic circuit system, optimizing the magnetic field distribution. In addition, the shape of the strip magnets is convenient for manufacturing and installation. By making the cooperation area between the main electromagnetic segment and the main magnet structure longer, the sound quality, volume output, reliability and durability of the loudspeaker are further improved.

[0012] In one embodiment, the plurality of magnet structures include horizontally magnetized horizontal magnet structures and longitudinally magnetized longitudinal magnet structures, at least a pair of same-horizontal magnet structures are included in all the horizontal magnet structures, a longitudinal magnet structure is arranged between two adjacent horizontal magnet structures, the magnetization directions of two adjacent horizontal magnet structures are opposite, and the magnetization directions of two adjacent longitudinal magnet structures are opposite.

[0013] In one embodiment, the magnetization direction of the longitudinal magnet structure between two adjacent horizontal magnet structures with opposite magnetization directions faces the side where the voice coil is located; the magnetization direction of the longitudinal magnet structure between two adjacent horizontal magnet structures with opposite magnetization directions faces the opposite side of the side where the voice coil is located. The addition of the longitudinal magnetic field further enhances the magnetic field intensity around the voice coil, and together with the horizontal magnetic field, makes the magnetic field lines more concentratedly point to the voice coil.

[0014] In one embodiment, the width ratio of the main magnet structure to the width of other magnet structures is 1.2 to 2.0. Within the range of the width ratio of 1.2 - 2.0, the main magnet structure can attract magnetic lines of force to concentrate around it with just the right intensity.

[0015] In one embodiment, the magnetic circuit system includes a chassis, the chassis has a receiving cavity, a first magnet is located in the receiving cavity, and the chassis also has an opening communicating with the receiving cavity; the vibration system includes a diaphragm, the first surface of the diaphragm covers the opening, and a voice coil is provided on the second surface of the diaphragm opposite to the first surface. The voice coil includes at least one layer of coil disks, and the coil disks are at least one - turn rings formed by winding a wire in the same plane. The voice coil has a lower height and is more flattened, which can avoid the influence of the voice coil on the thickness of the speaker, reduce the thickness of the speaker, and enable the speaker to better meet the requirements of thin and light mobile terminals for the thickness of the speaker.

[0016] In one embodiment, the chassis is made of a non - magnetic material. The non - magnetic material chassis will not interfere with the normal distribution of the magnetic field, enabling the magnetic lines of force to act more concentratedly on the voice coil and improving the working efficiency of the voice coil.

[0017] In one embodiment, the height - to - width ratio of the voice coil is 2:10. It can achieve efficient magnetic field utilization and sound output in a narrow space, meeting the user's demand for high - quality audio.

[0018] In one embodiment, there are at least two turns of wire in the coil disks of the same layer, and the adjacent turns of wire are in contact.

[0019] In one embodiment, each layer of coil disks is wound by the same wire, or each layer of coil disks in each layer of coil disks is respectively wound by a single wire.

[0020] In one embodiment, the diaphragm includes a support portion, a connecting portion, and an annular protruding portion. The support portion matches the inner circle of the protruding portion and is connected to the inner circle of the protruding portion. The voice coil is located on the support portion, and the connecting portion surrounds the outer circle of the protruding portion and is connected to one end of the chassis with an opening.

[0021] In one embodiment, there is a receiving groove on the second surface, and the voice coil is located in the receiving groove. Among them, the protruding portion and the support portion form the receiving groove.

[0022] In one embodiment, the vibration system further includes a flexible circuit board. The flexible circuit board is located in the receiving cavity and is connected to the first surface of the diaphragm, and the voice coil is electrically connected to the flexible circuit board.

[0023] The second aspect of the present application provides an electronic device, including a main body, a speaker, and a control part installed in the main body. The speaker is the above - mentioned speaker.

[0024] With the above technical solution, since the electronic device includes the above speaker, it at least has all the beneficial effects of the speaker, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic structural diagram of the electronic device provided by an embodiment of the present application;

[0026] Figure 2 Cross-sectional view of the speaker provided by an embodiment of the present application;

[0027] Figure 3 Cross-sectional view of the main electromagnetic section and the main magnet structure of the speaker provided by an embodiment of the present application;

[0028] Figure 4 Simulation diagram of the magnetic field line distribution when the first magnet is a single integral in the related art;

[0029] Figure 5 Magnetization direction diagram of the embodiment with 5 magnet structures in the present application;

[0030] Figure 6 Simulation diagram of the magnetic field line distribution of the embodiment with 5 magnet structures in the present application;

[0031] Figure 7 Magnetization direction diagram of the embodiment with 6 magnet structures in the present application;

[0032] Figure 8 Simulation diagram of the magnetic field line distribution of the embodiment with 6 magnet structures in the present application;

[0033] Figure 9 Magnetization direction diagram of the embodiment with 7 magnet structures in the present application;

[0034] Figure 10 Simulation diagram of the magnetic field line distribution of the embodiment with 7 magnet structures in the present application;

[0035] Figure 11 Comparison diagram of the BL lines of the embodiment of the present application and the related art using a single integral first magnet;

[0036] Figure 12 Cross-sectional view of the speaker chassis provided by an embodiment of the present application;

[0037] Figure 13 Cross-sectional view of the speaker diaphragm provided by an embodiment of the present application;

[0038] Figure 14 Top view of the speaker diaphragm provided by an embodiment of the present application;

[0039] Figure 15BL line comparison diagram between the embodiment of the present application and the comparative embodiment;

[0040] Among them, the meanings represented by each attached reference numeral are as follows:

[0041] 1. Speaker; 2. Main body;

[0042] 10. Vibration system; 11. Voice coil; 111. Main electromagnetic section; 12. Speaker frame; 121. Accommodating cavity; 122. Opening; 13. Diaphragm; 131. Supporting part; 132. Connecting part; 133. Protruding part; 134. Receiving groove;

[0043] 20. Magnetic circuit system; 21. First magnet; 211. Multiple magnet structures; 2112. Main magnet structure;

[0044] 212. Longitudinal magnet structure; Detailed implementation

[0045] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the implementation manners of the present application in detail with reference to the accompanying drawings.

[0046] It should be understood that in the description of the present application, it is necessary to understand that the orientation or positional relationships indicated by the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present 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 thus cannot be construed as a limitation to the present application.

[0047] The terms "first", "second", "third", "fourth", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. For example, the first pushing part and the second pushing part are only for distinguishing different pushing parts, and do not limit their sequence. The first pushing part can also be named the second pushing part, and the second pushing part can also be named the first pushing part, without departing from the scope of the described embodiments. And the terms "first", "second", "third", "fourth", etc. do not limit that the indicated features must be different.

[0048] In the embodiments of the present application, unless otherwise clearly specified and defined, terms such as "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0049] In the embodiments of the present application, "and / or" is merely a correlation relationship describing the associated objects, indicating that there can be three relationships; for example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0050] It should be noted that in the embodiments of the present application, words such as "in one embodiment", "exemplarily", and "for example" are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "in one embodiment", "exemplarily", or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly, using words such as "in one embodiment", "exemplarily", and "for example" aims to present the relevant concepts in a specific manner.

[0051] In order to make the purpose, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0052] Speakers in the related art can be classified into moving coil speakers, electrostatic speakers, piezoelectric speakers, permanent magnet speakers, etc. according to their different sound generation principles. Among them, moving coil speakers are widely used in mobile terminals such as mobile phones and tablet computers due to their simple structure, easy production, excellent performance, etc.

[0053] In the related art, a moving coil speaker generally includes a vibration system and a magnetic circuit system. Among them, the magnetic circuit system includes a magnetic bowl provided on the inner bottom surface of the bracket and a magnet provided in the magnetic bowl, and the outer wall of the magnet and the inner wall of the magnetic bowl form a magnetic gap; the vibration system includes a diaphragm provided at the open end of the bracket, a dome provided in the middle of the diaphragm, and a voice coil connected to the lower end of the dome and inserted into the magnetic gap. When an electric current flows through the voice coil, an Ampere force will be generated, and the voice coil moves in the magnetic gap under the action of the Ampere force to drive the diaphragm to vibrate, and the vibrating diaphragm repeatedly pushes the air to emit sound.

[0054] The magnetic circuit system design of traditional speakers is relatively single, usually adopting a simple layout of a whole magnet. Due to the dispersion of the magnetic field line distribution, the force on the voice coil in the magnetic field is uneven and unstable, which is likely to cause sound distortion and it is difficult to accurately restore the unique timbres of various musical instruments and the delicate emotions of human voices when playing music, greatly reducing the clarity and fidelity of the sound quality. At the same time, the non-concentrated magnetic field lines result in a relatively low magnetic induction intensity around the voice coil, and the electromagnetic force received by the voice coil is limited, thus the vibration intensity of the diaphragm driven is insufficient, and the volume output of the speaker is also restricted, making it impossible to provide users with an excellent auditory experience in different environments. An embodiment of the present application provides a speaker, which is used for an electronic device, and the electronic device includes a main body and a control unit installed in the main body. It should be noted that the above-mentioned electronic device refers to an Internet hardware product with information collection, processing and connection capabilities, and at the same time can realize functions such as intelligent perception, interaction, and big data services. It is an important carrier of technologies such as the Internet and artificial intelligence, such as smart phones, tablet computers, foldable PCs, laptop computers, and so on.

[0055] Please refer to Figures 2 to 3As shown, in the embodiment of the present application, the loudspeaker includes a vibration system 10 and a magnetic circuit system 20. The vibration system 10 includes a voice coil 11, and the voice coil 11 has main electromagnetic segments 111 arranged oppositely; the magnetic circuit system 20 includes a first magnet 21, and the first magnet 21 includes a plurality of magnet structures 211, and the plurality of magnet structures 211 are arranged side by side; at least a pair of same-horizontal magnet structures are included in the plurality of magnet structures 211, wherein, two same-horizontal magnet structures in each pair are horizontally magnetized, and the magnetization directions are the same, and two same-horizontal magnet structures of the outermost pair among all the same-horizontal magnet structures are both main magnet structures 2112; the positions of the two oppositely arranged main electromagnetic segments 111 respectively correspond to the positions of the two main magnet structures 2112. It should be noted that a loudspeaker is a device that converts an electrical signal into a sound signal, and realizes the playback of sound through the collaborative action of components such as the vibration system 10 and the magnetic circuit system 20. The voice coil 11 is located in the vibration system 10 and is usually a coil made of a conductive material. When an electric current passes through the voice coil 11, it will be subjected to an electromagnetic force in the magnetic field and generate motion, thereby driving the diaphragm 13 of the loudspeaker to vibrate. The voice coil 11 has main electromagnetic segments 111 arranged oppositely, and the positions and force conditions of these main electromagnetic segments 111 in the magnetic field have an important impact on the performance of the loudspeaker. The magnetic circuit system 20 is the part that provides a magnetic field for the voice coil 11 and plays a key control role in the motion of the voice coil 11. A magnet structure is each independent magnet unit that composes the first magnet 21. The plurality of magnet structures 211 are arranged side by side, and a specific magnetic field distribution can be formed. A same-horizontal magnet structure is a pair of magnet structures in the plurality of magnet structures 211 that have the same horizontal magnetization direction, so that the magnetic field is enhanced with each other in a specific direction, improving the intensity and concentration of the magnetic field. Among all the same-horizontal magnet structures, the outermost pair of same-horizontal magnet structures is called the main magnet structure 2112. The main electromagnetic segments 111 are the oppositely arranged parts on the voice coil 11, and their positions correspond to the main magnet structures 2112 to ensure that the voice coil 11 can receive a greater electromagnetic force in the magnetic field, thereby realizing more efficient sound output.

[0056] In the embodiment of the present application, a plurality of magnet structures 211 are arranged side by side and specific same-horizontal magnet structures are adopted, and the magnetization directions of the same-horizontal magnet structures are the same. This makes the magnetic force lines more inclined to concentrate around the main electromagnetic segments 111 of the voice coil 11. The concentrated magnetic force line distribution makes the force received by the voice coil 11 in the magnetic field more uniform and stable, greatly reducing the distortion of the sound. When playing high-fidelity music, it can accurately restore the unique timbres of various musical instruments and human voices, significantly improving the clarity and fidelity of the sound quality. At the same time, the concentrated magnetic force lines increase the magnetic induction intensity around the voice coil 11, and the voice coil 11 receives a greater electromagnetic force, thereby driving the diaphragm 13 to generate stronger vibrations, and further increasing the volume output of the loudspeaker, bringing a better auditory experience to the user.

[0057] The arrangement of multiple magnet structures 211 and the corresponding setting of the main electromagnetic segment 111 and the main magnet structure 2112 achieve a more efficient magnetic field layout within a limited space. This improves the space utilization rate of the speaker, which is crucial for the speaker design of small electronic devices, and ensures the stability of the voice coil 11 during movement. The voice coil 11 is like being on a stable track in a complex and concentrated magnetic field environment.

[0058] In the embodiments of the present application, the widths of the two main magnet structures 2112 are greater than those of other magnet structures. The two main magnet structures 2112 having larger widths enable them to generate a stronger magnetic field. From the principle of magnetic field generation, the larger the size of a magnet, the generally corresponding increase in the magnetic field strength it generates. The main magnet structure 2112 is like a powerful magnetic field source, emitting magnetic field lines into the surrounding space. When multiple magnet structures 211 are arranged side by side, the guiding and converging effect of the wider main magnet structure 2112 on the magnetic field lines is more obvious. They attract the magnetic field lines from other magnet structures and the surrounding space, making the magnetic field lines more concentratedly distributed around the voice coil 11. The concentrated distribution of magnetic field lines further enhances the magnetic induction intensity at the position where the voice coil 11 is located.

[0059] See Figure 3 As shown, the main electromagnetic segment 111 of the voice coil 11 is in this enhanced magnetic field region and can feel a stronger magnetic field force. The stronger magnetic field concentration effect makes the movement of the voice coil 11 in the magnetic field more stable and uniform. The movement of the voice coil 11 directly determines the vibration mode of the speaker diaphragm 13, and the stable and uniform vibration of the diaphragm 13 can greatly reduce the distortion of sound. When playing music, whether it is the delicate timbre of string instruments, the rich tones of wind instruments, or the complex vocal performances, they can all be restored more accurately. The details of each note can be clearly presented, significantly improving the clarity and fidelity of the sound quality. A greater electromagnetic force is one of the key factors in increasing the volume. The powerful magnetic field generated by the wider main magnet structure 2112 makes the voice coil 11 subject to a greater electromagnetic force. The powerful electromagnetic force can more powerfully drive the movement of the voice coil 11, and then drive the diaphragm 13 to generate a stronger vibration. The stronger vibration of the diaphragm 13 pushes the surrounding air, thus generating a greater sound output. Whether in a quiet library or a noisy outdoor square, the speaker can meet the user's needs with sufficient volume.

[0060] In small electronic devices, the space is usually very limited. Although the wider main magnet structure 2112 is relatively large in size, through reasonable layout design, it can provide a powerful magnetic field for the speaker without occupying too much space. This enables small electronic devices such as smartphones and tablets to also have high-quality audio output.

[0061] In large audio systems, the requirements for sound quality are higher. The wider main magnet structure 2112 can provide a stronger magnetic field for the speaker, meeting the needs of professional audio equipment for high volume and high fidelity. Whether in a home theater, concert hall or performance stage, this kind of speaker can bring a shocking auditory experience to users.

[0062] See Figure 3 As shown, the multiple magnet structures 211 in the embodiments of the present application are all strip magnets, and the multiple strip magnets are arranged side by side in sequence along the short side direction of the magnetic circuit system 20. The shape and characteristics of the strip magnets make the generation of the magnetic field more concentrated and stable. Their existence provides a relatively strong magnetic field environment for the voice coil 11, enabling the voice coil 11 to work efficiently therein. The strip magnets are arranged side by side in sequence along the short side direction of the magnetic circuit system 20, optimizing the distribution of the magnetic field. In addition, the shape of the strip magnets is convenient for manufacturing and installation. Their standardized shape makes the production process more efficient and reduces the production cost. At the same time, when assembling the speaker, the arrangement of the strip magnets also makes the installation process more simple and fast, improving the production efficiency.

[0063] On the other hand, the multiple strip magnets are arranged side by side in sequence along the short side direction of the magnetic circuit system 20, and the matching area between the main electromagnetic section 111 and the main magnet structure 2112 is longer. The longer matching area also enhances the effect of the magnetic field on the voice coil 11. More magnetic force lines can interact with the voice coil 11 in a longer area, thereby increasing the magnetic induction intensity around the voice coil 11. A higher magnetic induction intensity means that the voice coil 11 can receive a greater electromagnetic force, which will further enhance the movement power of the voice coil 11, enabling the speaker to produce a greater volume output. The multiple strip magnets are arranged side by side in sequence along the short side direction of the magnetic circuit system 20, not only playing an important role in magnetic field generation, distribution, manufacturing and installation of the strip magnets, but also further improving the sound quality, volume output, reliability and durability of the speaker by making the matching area between the main electromagnetic section 111 and the main magnet structure 2112 longer.

[0064] In the embodiments of the present application, the multiple magnet structures 211 include a horizontally magnetized horizontal magnet structure and a vertically magnetized vertical magnet structure 212. Among all the horizontal magnet structures, there are at least a pair of co-horizontal magnet structures. A vertical magnet structure 212 is arranged between two adjacent horizontal magnet structures. The magnetization directions of two adjacent horizontal magnet structures are opposite, and the magnetization directions of two adjacent vertical magnet structures 212 are opposite. The combination of the horizontally magnetized horizontal magnet structure and the vertically magnetized vertical magnet structure 212 creates a highly complex magnetic field environment for the speaker. From the perspective of the magnetic field generation principle, the horizontal magnet structure and the vertical magnet structure 212 generate magnetic field lines in different directions respectively. The horizontal magnet structure mainly generates a magnetic field in the horizontal direction, while the vertical magnet structure 212 plays a role in the vertical direction. The magnet structures with these two different magnetization directions act together, just like constructing a multi-dimensional magnetic field network in a space. It can provide magnetic field lines in more directions. The multi-directional magnetic field force also improves the stability of the voice coil 11 in the magnetic field. In a magnetic field in a single direction, the voice coil 11 may have unstable movement due to uneven forces, resulting in sound distortion. In this complex magnetic field environment, the voice coil 11 is subjected to relatively uniform forces in all directions, making its movement more stable and reducing the sound distortion caused by unstable movement.

[0065] Since the co-horizontal magnet structures have the same magnetization direction, the force directions can be the same. When the two main electromagnetic segments 111 of the voice coil 11 are in the co-horizontal magnet structure, the magnetic field lines will concentrate around the voice coil 11, thereby increasing the magnetic induction intensity around the voice coil 11. A higher magnetic induction intensity means that the voice coil 11 can receive a greater electromagnetic force, which provides a more powerful driving force for the movement of the voice coil 11. At the same time, the magnetization directions of two adjacent horizontal magnet structures are opposite. This makes the magnetic field in the horizontal direction have both regions of mutual enhancement and regions of mutual cancellation. In the regions of mutual enhancement, the magnetic field intensity will be higher, providing a stronger acting force for the voice coil 11; while in the regions of mutual cancellation, the magnetic field intensity will weaken, thus avoiding the over-concentration of the magnetic field in a certain area. The regular magnetic field distribution can effectively adjust the magnetic field distribution and reduce the influence of the magnetic field non-uniformity on the movement of the voice coil 11. For example, during the movement of the voice coil 11, if the magnetic field is overly concentrated in a certain area, it may cause the voice coil 11 to receive an excessive force in that area, resulting in uneven movement and affecting the sound quality. Through the design of opposite magnetization directions of adjacent horizontal magnet structures, the magnetic field can be balanced between different regions, ensuring that the voice coil 11 receives more uniform forces during the entire movement process and improving the stability and consistency of the sound.

[0066] The magnetization directions of two adjacent longitudinal magnet structures 212 are opposite to each other, and they play a role in adjusting the magnetic field similar to that of the transverse magnet structure in the longitudinal direction. The longitudinal magnet structure 212 cooperates with the transverse magnet structure to further optimize the distribution of the entire magnetic field. In three-dimensional space, the longitudinal magnet structure 212 provides a magnetic force in the vertical direction for the voice coil 11. Together with the transverse magnet structure, the voice coil 11 can be subjected to a relatively uniform magnetic field in three-dimensional space. In summary, the combined action of the transverse magnet structure and the longitudinal magnet structure 212 constructs a complex and optimized magnetic field environment, providing strong support for improving the performance of the speaker.

[0067] In the embodiment of the present application, the magnetization direction of the longitudinal magnet structure 212 between two adjacent transverse magnet structures with opposite magnetization directions faces the side where the voice coil 11 is located; the magnetization direction of the longitudinal magnet structure 212 between two adjacent transverse magnet structures with the same magnetization direction faces the opposite side of the side where the voice coil 11 is located. For the longitudinal magnet structure 212 between two adjacent transverse magnet structures with opposite magnetization directions, its magnetization direction faces the side where the voice coil 11 is located. In this area, the longitudinal magnetic field interacts with the transverse magnetic field to form a specific magnetic field distribution. The addition of the longitudinal magnetic field further enhances the magnetic field intensity around the voice coil 11, and together with the transverse magnetic field, makes the magnetic force lines more concentratedly point to the voice coil 11. It is like constructing a magnetic field "focus" around the voice coil 11, enabling the voice coil 11 to work under a stronger magnetic field and improving the force-receiving effect of the voice coil 11 in the magnetic field.

[0068] Precise magnetic field regulation enables the voice coil 11 to receive a greater electromagnetic force. Whether in the area where the magnetization directions are opposite or the same, the specific magnetization direction of the longitudinal magnet structure 212 helps to increase the magnetic induction intensity around the voice coil 11, thereby increasing the electromagnetic force received by the voice coil 11. The greater electromagnetic force can more powerfully drive the movement of the voice coil 11, enabling the voice coil 11 to respond more quickly and accurately to the changes in the audio signal, improving the sound output quality and dynamic range of the speaker. Through a reasonable magnetic field layout, the stability of the voice coil 11 during movement is greatly improved. In different magnetic field regions, the magnetization direction of the longitudinal magnet structure 212 cooperates with the transverse magnet structure to provide a stable magnetic field environment for the voice coil 11. For example, when playing music, whether it is the delicate performance of the high-pitched part or the strong shock of the low-pitched part, the voice coil 11 can accurately convert the electrical signal into mechanical vibration under the action of a stable magnetic field, bringing a better auditory experience to the user.

[0069] See Figure 4 , which shows the simulation diagram of the magnetic force line distribution when the first magnet 21 is a whole in the related art.

[0070] See Figure 5 andFigure 6 As shown, it presents the simulated magnetic field line distribution diagram of the embodiment with 5 magnet structures in this application.

[0071] See Figure 7 and Figure 8 As shown, it presents the simulated magnetic field line distribution diagram of the embodiment with 6 magnet structures in this application.

[0072] See Figure 9 and Figure 10 As shown, it presents the simulated magnetic field line distribution diagram of the embodiment with 7 magnet structures in this application.

[0073] See Figure 11 As shown, it presents the BL curve of the simulation analysis magnetic circuit system 20 where the first magnet 21 is an integral body and other structures are the same as those of the embodiment with 5 magnet structures in this application in the related art. It can be seen that the BL value is 24.6% higher than that of the comparative example. In a speaker, the BL curve describes the variation relationship of the force coefficient (BL value) with the voice coil displacement. The abscissa is the voice coil displacement, and the unit is usually millimeters (mm). The voice coil displacement refers to the moving distance of the voice coil relative to its initial position in the magnetic field. The ordinate is the BL value, and the unit is Newton per ampere.

[0074] According to the speaker sensitivity formula SPL = 20log(BL * SD / (Re 1 / 2 * Mms), when BL increases by 24.6%, the corresponding sensitivity will increase by 1.91 dB. Among them, SPL: speaker sensitivity; BL: force factor; SD: diaphragm area; Re: voice coil resistance; Mms: vibration system mass.

[0075] In all the above figures, the starting end of the arrow is the N pole and the ending end is the S pole.

[0076] In the embodiment of this application, the width ratio of the main magnet structure 2112 to the widths of other magnet structures is 1.2 to 2.0. The width of the main magnet structure 2112 is greater than that of other magnet structures, and the width ratio is between 1.2 and 2.0. From the principle of magnetic field generation, the size and shape of a magnet have an important impact on the magnetic field strength and distribution it generates. The relatively wide size of the main magnet structure 2112 enables it to generate a stronger magnetic field. Just like a more powerful magnetic source, it can emit more magnetic field lines into the surrounding space. Within the range of the width ratio of 1.2 to 2.0, the main magnet structure 2112 can attract the magnetic field lines to concentrate around it with just the right intensity. Due to its wider size, the main magnet structure 2112 has a stronger attraction for the magnetic field lines, making the magnetic field lines more inclined to be distributed around it. And the voice coil 11 is in this magnetic field region affected by the main magnet structure 2112 and can feel the action of more concentrated magnetic field lines.

[0077] A specific width ratio ensures the rationality of the magnetic field distribution. If the main magnet structure 2112 is too wide, although it can generate a strong magnetic field, it may cause the magnetic field to be overly concentrated in a local area. This makes the magnetic field intensity too high in some areas around the voice coil 11, while relatively low in other areas. Such an uneven magnetic field distribution will affect the uniformity of sound, resulting in some frequencies of sound being overly prominent during music playback, while other frequencies may be weakened, thus affecting the overall performance of the sound quality.

[0078] Conversely, if the main magnet structure 2112 is too narrow, its guiding effect on the magnetic lines of force will be weakened, and it cannot fully play its key role in the magnetic field system. This leads to a decrease in the electromagnetic force acting on the voice coil 11 in the magnetic field, affecting the movement efficiency of the voice coil 11 and the output intensity of the sound. Within this ratio range, the main magnet structure 2112 can generate a strong enough magnetic field to attract the magnetic lines of force without causing the magnetic field to be overly concentrated in a local area. At the same time, other magnet structures can, under the influence of the main magnet structure 2112, jointly construct a more uniform and stable magnetic field environment.

[0079] In traditional speaker technology, it is usually composed of a magnetic circuit system and a vibration system. The magnetic circuit system includes components such as magnets, magnetic bowls, and washers, while the vibration system includes a diaphragm, a dome, and a voice coil, etc. The voice coil is connected to the dome and the diaphragm, and the whole system is connected to a bracket. The voice coil vibrates up and down in the magnetic gap formed by the magnetic bowl and the washer, thereby driving the diaphragm to vibrate and produce sound. To achieve high sensitivity and prevent the voice coil from jumping out of the magnetic gap during large-amplitude operation, in traditional designs, the height of the voice coil is often designed to be relatively high, and the ratio of the height to the width of the voice coil is usually large. However, as electronic products continue to develop towards miniaturization and thinness, small electronic devices such as smartphones and tablets have increasingly strict requirements for the size of speakers. In this trend, the relatively high voice coil limits the overall thickness of the speaker, making it difficult for the speaker to be ultra-thin. A thickness of 2.5 mm basically becomes the thickness limit of a micro speaker.

[0080] Moreover, as the demand for high volume in micro speakers increases, the magnetic gap becomes smaller while the amplitude becomes larger. In this case, the relatively high voice coil is extremely likely to rub against the magnetic bowl, washer, or magnet during vibration in the magnetic gap, thus causing the speaker to produce noise and triggering quality failures, unable to meet users' demands for high-quality audio. See Figure 2 、 Figure 3 、 Figure 12As shown in the figure, the magnetic circuit system 20 in the embodiment of the present application includes a chassis 12. The chassis 12 has a receiving cavity 121. The first magnet 21 is located in the receiving cavity 121. The chassis 12 also has an opening 122 communicating with the receiving cavity 121. The vibration system 10 includes a diaphragm 13. The first surface of the diaphragm 13 covers the opening 122. A voice coil 11 is provided on the second surface of the diaphragm 13 opposite to the first surface. The voice coil 11 includes at least one layer of coil disks. The coil disks are at least one loop of rings formed by winding a wire in the same plane. The diaphragm 13 is the sound generating component of the speaker. The first surface of the diaphragm 13 covers the opening 122 of the chassis 12. The outer edge of the diaphragm 13 is connected to the chassis 12. The voice coil 11 is the vibration component of the speaker. The voice coil 11 is connected to the second surface of the diaphragm 13 and includes at least one layer of coil disks formed by winding a wire in the same plane. The energized coil disks move up and down under the Ampere force in the magnetic field of the first magnet 21 to drive the diaphragm 13 to vibrate.

[0081] When the speaker is working, a current is input to the voice coil 11. When the current flows through the wire of the coil disk, it will pass through the magnetic field of the first magnet 21. When the current passes through the magnetic field, it will be driven by the Ampere force exerted by the magnetic field to drive the coil disk to move, and then drive the diaphragm 13 to move together. By changing the magnitude and direction of the current, the magnitude and direction of the Ampere force will also change, causing the coil disk to move repeatedly in one direction to drive the diaphragm 13 to vibrate. When the diaphragm 13 vibrates, it repeatedly pushes the air around it to vibrate and generate sound.

[0082] The coil disks in the embodiment of the present application are formed by winding a wire in the same plane. The height of the coil disk is the diameter of the wire. The width of the coil disk depends on the number of turns of the wire winding. The voice coil 11 is composed of at least one layer of coil disks. The height of the voice coil 11 is the number of layers of the coil disks multiplied by the diameter of the wire. In the related art, in order to prevent the voice coil 11 from jumping out of the magnetic gap during movement, the voice coil 11 is formed by helically winding the wire longitudinally, so as to ensure that the voice coil 11 has a certain height and enables the voice coil 11 to be inserted deeper into the magnetic gap. Therefore, on the premise of receiving the same Ampere force, the height of the voice coil 11 in the embodiment of the present application is also lower, and the voice coil 11 is more flattened, which can avoid the influence of the voice coil 11 on the thickness of the speaker, reduce the thickness of the speaker, and enable the speaker to better meet the requirements of the thin and light mobile terminal for the thickness of the speaker.

[0083] In addition, since the voice coil 11 is arranged above the diaphragm 13, there is no need to provide a voice coil 11 skeleton for connecting the voice coil 11 to the lower side of the diaphragm 13, which can simplify the structure of the speaker and reduce the thickness of the speaker. Compared with the voice coil 11 in the related art that needs to extend into the magnetic gap, the present application can prevent the voice coil 11 from rubbing against the inner wall of the chassis 12 and the outside of the magnet during vibration, and avoid the noise generated by the rubbing of the voice coil 11.

[0084] Moreover, the chassis 12 also has the function of supporting the diaphragm 13, which is equivalent to replacing the bracket in the related art, and can simplify the structure of the speaker and reduce the thickness of the speaker.

[0085] The chassis 12 in the embodiment of the present application is made of non-magnetic conductive materials. The material of the chassis 12 can be organic materials such as PA, PC, PEI, etc., or it can be metal, preferably non-magnetic conductive materials such as metals like Al, Cu, Ni, etc. or their alloys. In the magnetic circuit system 20, when the height of the first magnet 21 and the chassis 12 remains unchanged, using a chassis 12 made of magnetic conductive materials, the BL value is lower than that of a chassis 12 made of non-magnetic conductive materials. Using a chassis 12 made of non-magnetic conductive materials can effectively avoid the interference of the chassis 12 on the magnetic field. In the magnetic circuit system 20 of the speaker, the distribution and intensity of the magnetic field play a key role in the movement of the voice coil 11 and the output of sound. If the chassis 12 is made of magnetic conductive materials, it will attract a part of the magnetic lines of force, resulting in a change in the magnetic field distribution and affecting the magnetic induction intensity around the voice coil 11. However, the chassis 12 made of non-magnetic conductive materials will not interfere with the normal distribution of the magnetic field, enabling the magnetic lines of force to act more concentratedly on the voice coil 11 and improving the working efficiency of the voice coil 11.

[0086] Making the chassis 12 with organic materials such as PA, PC, PEI, etc., these materials themselves do not have magnetic conductivity, and can minimize the influence on the magnetic field while ensuring the structural strength of the chassis 12. For example, when the speaker is working, the electromagnetic force received by the voice coil 11 in the magnetic field is more stable, thereby reducing the distortion of the sound and improving the clarity and fidelity of the sound quality.

[0087] See Figure 15 As shown, in the comparative example, in the magnetic circuit system 20, on the premise that the height of the first magnet 21 and the chassis 12 are the same as those of the present application, using a chassis 12 made of magnetic conductive materials, the BL value is lower than the BL value of a chassis 12 made of non-magnetic conductive materials.

[0088] In the embodiment of the present application, the ratio of the height to the width of the voice coil 11 is 2:10. In small electronic devices with limited space, such as smartphones, tablets, etc., the voice coil 11 with this ratio can provide excellent audio performance without occupying too much space. It can achieve efficient magnetic field utilization and sound output in a narrow space, meeting the user's demand for high-quality audio.

[0089] In the embodiment of the present application, there are at least two turns of wires in the same layer of coil disk, and the adjacent turns of wires are in contact. In the embodiment of the present application, each layer of coil disk is wound with the same wire, or each layer of coil disk in each layer of coil disks is wound with a separate wire respectively.

[0090] In the embodiments of the present application, there are at least two turns of wires in the same layer of the coil disk, and the adjacent turns of wires are in contact. The number of turns of wires in the coil disk affects the intensity of the Ampere force received by the coil disk when it is energized. Since each turn of wire will receive the Ampere force, generally speaking, the more turns of wires in the coil disk, the greater the Ampere force received by the coil disk. And in one layer of the coil disk, the adjacent turns of wires are in contact with each other, which can also reduce the size of the coil disk in the radial direction or reduce the number of layers in which the coil disks are distributed.

[0091] In the embodiments of the present application, there are various ways to wind the coil disk. The winding methods of the coil disk will be described below. In one of the winding methods, each layer of the coil disk can be wound by the same wire, that is, a wire is first wound into a layer of coil disk on a plane and then continues to wind a coil layer of coil disk on the coil disk on this plane. Just like this, after winding one layer, wind another layer upwards to form the voice coil 11. The advantage of winding each layer of the coil disk by the same wire is that each layer of the coil disk is connected in series. Therefore, the voice coil 11 formed by the coil disks has only two connection ends, that is, the two ends of this wire that forms the voice coil 11, which can minimize the number of connection ends and simplify the wiring.

[0092] In another winding method, each layer of the coil disk in each layer of the coil disks can be respectively wound by a separate wire on the plane where each layer of the coil disk is located, that is, each layer of the coil disk is an independent wire, and each layer of the coil disks forms the voice coil 11.

[0093] The advantage of winding each layer of the coil disk in each layer of the coil disks by a separate wire on the plane where each layer of the coil disk is located is that each layer of the coil disks is juxtaposed. When the wire of one layer of the coil disk is damaged, it does not affect the use of other coil disks. During maintenance, the damaged layer of the coil disk can be replaced separately, saving the maintenance cost.

[0094] See Figure 13 and Figure 14 As shown, the diaphragm 13 in the embodiments of the present application includes a support portion 131, a connection portion 132, and an annular convex portion 133. The support portion 131 matches the inner circle of the convex portion 133 and is connected to the inner circle of the convex portion 133. The voice coil 11 is located on the support portion 131. The connection portion 132 surrounds the outer circle of the convex portion 133 and is connected to one end of the speaker frame 12 having an opening 122.

[0095] The support portion 131 in the embodiment of the present application is the sound - generating structure of the diaphragm 13. The support portion 131 is connected to the inner circle of the convex portion 133, and the convex portion 133 tightens the support portion 131 so that the support portion 131 can only vibrate in the vertical direction and cannot move in the horizontal direction. The convex portion 133 has a fixed shape and a certain elasticity to enable it to tighten the support portion 131. The shape of the convex portion 133 is generally an annular shape and can be processed from materials such as rubber and plastic. The connecting portion 132 surrounds the outer circle of the convex portion 133 and is connected to the side wall of the chassis 12 to connect the convex portion 133 to the side wall of the chassis 12.

[0096] In a possible implementation manner, a receiving groove 134 is provided on the second surface, and the voice coil 11 is located in the receiving groove 134. The receiving groove 134 on the second surface of the diaphragm 13 can play a positioning role, and the installation position of the voice coil 11 is determined through the receiving groove 134, simplifying the assembly of the speaker. In a possible implementation manner, the convex portion 133 and the support portion 131 form the receiving groove 134. In a possible implementation manner, for the speaker provided in the embodiment of the present application, the vibration system 10 further includes a flexible circuit board. The flexible circuit board is located in the accommodation cavity 121 and is connected to the first surface of the diaphragm 13, and the voice coil 11 is electrically connected to the flexible circuit board. Using the flexible circuit board as the power transmission circuit for the voice coil 11, taking advantage of the advantages of the flexible circuit board such as thin thickness and light weight, not only is it beneficial to reduce the thickness and weight of the speaker, but also it can reduce the influence on the vibration of the diaphragm 13 caused by the wiring of the wires.

[0097] In a possible implementation manner, for the speaker provided in the embodiment of the present application, the flexible circuit board includes a middle plate, a ring plate, and an elastic cantilever. The middle plate is located inside the ring plate. The ring plate is connected to the top of the side wall of the chassis 12, and the middle plate and the ring plate are connected by the elastic cantilever; the middle plate has a first contact, and the ring plate has a second contact. The first contact includes a first pole and a second pole, and the first pole and the second pole are respectively electrically connected to the two ends of the wire. The second contact includes a third pole and a fourth pole. The ring plate is connected to the chassis 12 to play a role in fixing the flexible circuit board. The middle plate is connected to the ring plate through the elastic cantilever so that the circuits of the middle plate and the ring plate are connected. The third pole and the fourth pole of the second contact are connected to the power supply of the terminal, and the first pole and the second pole of the first contact are respectively electrically connected to the two ends of the wire. After being powered on, the current flows through the third pole of the second contact, successively through the ring plate, the elastic cantilever, the middle plate, the coil disk, and the fourth pole to form a conductive loop. The elastic cantilever has a certain elasticity and can vibrate together with the diaphragm 13, reducing the influence on the diaphragm 13.

[0098] In a possible implementation, for the loudspeaker provided in the embodiments of the present application, the elastic cantilever includes an arc-shaped plate connected to the middle plate and the ring plate. The arc-shaped plate is located between the middle plate and the ring plate and bends around the middle plate. The arc-shaped elastic cantilever forms a spring-like telescopic structure between the middle plate and the ring plate, which can vibrate together with the diaphragm 13 without pulling on the diaphragm 13, and can reduce the influence on the diaphragm 13. In a possible implementation, for the loudspeaker provided in the embodiments of the present application, the diaphragm 13 has through holes located on the second surface of the diaphragm 13. Both ends of the wire extend through the through holes to the middle plate to be electrically connected to the first pole and the second pole. In this way, both ends of the wire are connected to the first electrode and the second electrode on the middle plate through the through holes on the diaphragm 13, realizing the conduction of the current in the wire.

[0099] In a possible implementation, for the loudspeaker provided in the embodiments of the present application, the axis of the speaker frame 12, the axis of the through holes, the axis of the coil bobbin, and the axis of the middle plate are collinear. In this way, the middle plate is located at the center of the speaker frame 12, the through holes are located at the center of the middle plate, and the coil bobbin is located at the center of the through holes, so that each part of the diaphragm 13 is evenly stressed, ensuring the stability of the sound generated by the diaphragm 13. In a possible implementation, for the loudspeaker provided in the embodiments of the present application, it further includes a second magnet. The second magnet is arranged on the second surface of the diaphragm 13 and is located within the inner circle of the annular coil bobbin. The magnetism of the second magnet is opposite to that of the first magnet 21.

[0100] Since the voice coil 11, the diaphragm 13, and the flexible circuit board itself have a certain mass, affected by gravity, the voice coil 11 and the flexible circuit board will exert a certain pressure on the diaphragm 13. When the loudspeaker is powered on, for the voice coil 11 to drive the diaphragm 13 to move under the Ampere force, it is necessary to first offset the gravity of the voice coil 11, the diaphragm 13, and the flexible circuit board, which will affect the vibration sensitivity of the diaphragm 13. Moreover, the diaphragm 13 is easily deformed or damaged under its own gravity and the pressure of the voice coil 11 and the flexible circuit board for a long time, which easily affects the sound quality of the loudspeaker. By providing a second magnet with magnetism opposite to that of the first magnet 21, the repulsive force between the first magnet 21 and the second magnet is used to offset the gravity of the second magnet, the diaphragm 13, the voice coil 11, and the flexible circuit board, so that the diaphragm 13 is in a suspended state. In this way, when the voice coil 11 is in the powered-on state, the voice coil 11 can directly drive the diaphragm 13 to move under the Ampere force, without first offsetting the gravity of the second magnet, the diaphragm 13, the voice coil 11, and the flexible circuit board and then driving the diaphragm 13 to move, which can make the movement of the voice coil 11 more flexible, thereby improving the sensitivity of the diaphragm 13. In addition, it can also prevent the diaphragm 13 from being deformed or damaged due to the long-term pressure of the voice coil 11 and the flexible circuit board, improving the service life of the diaphragm 13 and ensuring the sound quality of the loudspeaker.

[0101] In the embodiments of the present application, there is no need for a bracket design, and the basin frame 12 is used as a support; at the same time, the design of the magnetic circuit gap is cancelled, greatly reducing the design space. It can be applied not only to smartphones, speakers, but also to wireless headphones, smart screens, smart toys and other fields.

[0102] See Figure 1 As shown, a second aspect of the present application provides an electronic device, including a main body 2, a speaker 1 installed in the main body 2, and a control unit. The control unit is signal-connected to the speaker 1, and the speaker 1 is the above-mentioned speaker 1. The main body 2 of the electronic device usually consists of multiple components such as a housing, a display screen, a battery, a processor, and a memory. In addition, the main body 2 also needs to provide a power supply and a signal connection interface for the speaker 1 to ensure that the speaker 1 can work properly. The control unit is one of the core components of the electronic device and is responsible for processing various signals and instructions. In the connection with the speaker 1, the control unit mainly plays the following roles: First, the control unit receives audio signal sources, such as music files, video audio streams, voice calls, etc., and decodes and processes these signals. Then, the processed audio signal is transmitted to the speaker 1 for playback. The control unit can adjust the parameters of the audio signal, such as the volume size, equalization settings, etc., according to the user's operations and the state of the device. Second, the control unit can also communicate with the speaker 1 bidirectionally to monitor the working state of the speaker 1. For example, when the speaker 1 fails or malfunctions, the control unit can detect it in time and take corresponding measures, such as adjusting the audio output mode, prompting the user to perform maintenance, etc.

[0103] Due to the adoption of the above-mentioned speaker 1, the magnetic field lines can be more concentrated around the voice coil, improving the magnetic induction intensity around the voice coil and enhancing the driving force of the audio movement. When the electronic device plays audio, the sound quality is clearer, the fidelity is higher, and the volume is also larger. Whether playing music, videos or making voice calls, it can bring an excellent auditory experience to users. For the main body 2 of the electronic device with limited space, such as smartphones, tablets, etc., it meets the design trend of modern electronic devices to be thinner and lighter.

[0104] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A loudspeaker, characterized in that, The loudspeaker includes: a vibration system, the vibration system includes a voice coil, and the voice coil has main electromagnetic segments arranged oppositely; a magnetic circuit system, the magnetic circuit system includes a first magnet, the first magnet includes a plurality of magnet structures, and the plurality of magnet structures are arranged side by side; at least one pair of same-lateral magnet structures are included in the plurality of magnet structures, wherein, two same-lateral magnet structures in each pair are both transversely magnetized and have the same magnetization direction, and two same-lateral magnet structures of the outermost pair among all the same-lateral magnet structures are both main magnet structures; The positions of the two oppositely arranged main electromagnetic segments respectively correspond to the positions of the two main magnet structures.

2. The loudspeaker according to claim 1, wherein The widths of the two main magnet structures are greater than the widths of the other magnet structures.

3. The loudspeaker according to claim 1, characterized in that, The plurality of magnet structures are all strip magnets, and the plurality of strip magnets are sequentially arranged side by side along the short side direction of the magnetic circuit system.

4. The loudspeaker according to claim 1, characterized in that, The plurality of magnet structures include transversely magnetized lateral magnet structures and longitudinally magnetized longitudinal magnet structures, at least one pair of the same-lateral magnet structures are included in all the lateral magnet structures, one longitudinal magnet structure is arranged between two adjacent lateral magnet structures, the magnetization directions of two adjacent lateral magnet structures are opposite, and the magnetization directions of two adjacent longitudinal magnet structures are opposite.

5. The loudspeaker according to claim 4, wherein The magnetization direction of the longitudinal magnet structure between two adjacent lateral magnet structures with opposite magnetization directions faces the side where the voice coil is located; the magnetization direction of the longitudinal magnet structure between two adjacent lateral magnet structures with the same magnetization direction faces the opposite side of the side where the voice coil is located.

6. The loudspeaker according to any one of claims 1 to 5, characterized in that, The ratio of the width of the main magnet structure to the width of the other magnet structures is 1.2 to 2.

0.

7. The loudspeaker according to claim 1, characterized in that, The magnetic circuit system includes a chassis, the chassis has a receiving cavity, the first magnet is located in the receiving cavity, and the chassis also has an opening communicating with the receiving cavity; the vibration system includes a diaphragm, the first surface of the diaphragm covers the opening, the voice coil is arranged on the second surface of the diaphragm opposite to the first surface, the voice coil includes at least one layer of coil discs, and the coil discs are at least one turn of rings formed by winding a wire in the same plane.

8. The loudspeaker according to claim 7, characterized in that, The chassis is made of non-magnetic material.

9. The loudspeaker according to claim 7, characterized in that, The ratio of the height of the voice coil to the width of the voice coil is 2:

10.

10. The loudspeaker according to claim 7, characterized in that, There are at least two turns of the wire in the same layer of the coil discs, and the adjacent turns of the wire are in contact.

11. The loudspeaker according to claim 10, characterized in that, Each layer of the coil discs is wound by the same wire, or each layer of the coil discs in each layer of the coil discs is respectively wound by a single wire.

12. The loudspeaker according to claim 7, wherein, The diaphragm includes a support part, a connecting part and an annular convex part, the support part matches with the inner circle of the convex part and is connected with the inner circle of the convex part, the voice coil is located on the support part, the connecting part surrounds the outer circle of the convex part and is connected with one end of the chassis having the opening.

13. The loudspeaker according to claim 12, characterized in that, A receiving groove is arranged on the second surface, and the voice coil is located in the receiving groove, wherein, the convex part and the support part form the receiving groove.

14. The loudspeaker according to claim 7, characterized in that, The vibration system further includes a flexible circuit board, which is located in the accommodation cavity and is connected to the first surface of the diaphragm, and the voice coil is electrically connected to the flexible circuit board.

15. An electronic device, characterized in that, It includes a main body, a speaker installed in the main body, and a control unit. The control unit is signal-connected to the speaker, and the speaker is the speaker described in any one of claims 1-14.

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