Sound production device and electronic equipment

Abstract

The utility model discloses a sounding device and an electronic device, and relates to the electroacoustic transduction technology field, the sounding device comprises a housing, a magnetic circuit system and a vibration system, a bass magnetic circuit part in the magnetic circuit system is provided with a first bass magnetic gap and a second bass magnetic gap, and a treble magnetic circuit part is arranged at the outer side of the bass magnetic circuit part. A first bass voice coil of a bass vibration unit in the vibration system corresponds to a first bass magnetic gap, a second bass voice coil of the bass vibration unit corresponds to a second bass magnetic gap, and a high-pitch vibration unit is connected to a shell and is opposite to a high-pitch magnetic circuit part in a spaced mode. Wherein the bass vibration unit is provided with a bass radiation surface, the treble vibration unit is provided with a treble radiation surface, and an included angle is formed between the bass radiation surface and the treble radiation surface. According to the sound production device, the utilization rate of the magnetic circuit system is effectively improved, and the BL value is improved, so that the loudness and the sensitivity of the sound production device are improved, and full frequency and miniaturization are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducer, in particular to a sound generating device and an electronic device using the sound generating device. Background Art

[0002] In recent years, convenient electronic devices (such as mobile phones, headphones, and computers) have become an integral part of people's daily lives. With the rapid advancement of technology, people's demand for sound quality from electronic devices has also increased, and full-range and miniaturized speakers have become mainstream demands.

[0003] In the related art, a common full-range solution is to integrate a woofer and tweeter into a single electronic device. However, due to space limitations within the device, the dimensions of the two units are significantly limited, which compromises the speaker's full-range performance, resulting in lower performance and an inability to achieve superior sound quality. Furthermore, woofers typically employ a single voice coil solution, which does not effectively utilize the magnetic field generated by the magnetic circuit system. Furthermore, the voice coil's ability to drive the diaphragm is also unsatisfactory, reducing the woofer's BL value. Furthermore, the magnetic energy in the central magnetic region of the magnetic circuit system is inefficiently utilized, failing to be effectively utilized, thus impacting the loudness and sensitivity of the woofer. Utility Model Content

[0004] The main purpose of the present utility model is to provide a sound-producing device and an electronic device, aiming to provide a sound-producing device with a high magnetic field utilization rate. The sound-producing device integrates the bass and treble units into one, thereby occupying a smaller space and having a higher adaptability to the space of the entire machine. The magnetic circuit system is optimized and a dual voice coil is used to further improve the utilization rate of the magnetic circuit system and increase the BL value, thereby improving the loudness and sensitivity of the sound-producing device.

[0005] To achieve the above-mentioned purpose, the present invention provides a sound-generating device, which includes:

[0006] shell;

[0007] a magnetic circuit system connected to the housing, the magnetic circuit system comprising a bass magnetic circuit portion and a treble magnetic circuit portion, the bass magnetic circuit portion having a first bass magnetic gap and a second bass magnetic gap, the treble magnetic circuit portion being located outside the bass magnetic circuit portion; and

[0008] a vibration system comprising a bass vibration unit and a treble vibration unit, the bass vibration unit comprising a bass diaphragm and a first bass voice coil and a second bass voice coil connected to the bass diaphragm, the first bass voice coil being arranged corresponding to the first bass magnetic gap, and the second bass voice coil being arranged corresponding to the second bass magnetic gap; the treble vibration unit being connected to the housing and being arranged opposite to and spaced apart from the treble magnetic circuit portion;

[0009] The bass vibration unit has a bass radiation surface, the treble vibration unit has a treble radiation surface, and the bass radiation surface and the treble radiation surface are arranged at an angle.

[0010] In one embodiment, the housing includes a frame body and a mounting side wall, wherein the mounting side wall is provided on one side of the frame body and encloses an outer wall of the frame body to form a mounting space, and the mounting side wall is provided with a mounting hole communicating with the mounting space;

[0011] The periphery of the bass diaphragm is connected to one end of the frame body, the bass magnetic circuit part and the treble magnetic circuit part are arranged in the installation space, the treble magnetic circuit part is arranged corresponding to the installation hole, and the treble vibration unit is connected to the installation side wall and covers the installation hole.

[0012] In one embodiment, the tweeter magnetic circuit includes a first magnet, a second magnet, and a third magnet disposed in the mounting space. The first magnet, the second magnet, and the third magnet are stacked in a direction parallel to the tweeter radiation surface. The first magnet is away from the woofer diaphragm, and the third magnet is connected to the frame body.

[0013] The tweeter vibration unit includes a tweeter diaphragm and a tweeter voice coil connected to the tweeter diaphragm. The tweeter diaphragm is connected to the mounting side wall and covers the mounting hole. The tweeter voice coil is located in the mounting hole and is opposite to and spaced apart from the tweeter magnetic circuit part.

[0014] In one embodiment, the first magnet, the second magnet, and the third magnet are all magnetized in a direction perpendicular to the tweeter radiation surface, and the magnetization direction of the second magnet is opposite to the magnetization direction of the first magnet and the third magnet;

[0015] Alternatively, the second magnet is magnetized in a direction perpendicular to the tweeter radiation surface, and the first magnet and the third magnet are magnetized in a direction parallel to the tweeter radiation surface, and the magnetization direction of the first magnet is opposite to that of the third magnet, and the magnetic pole of the first magnet on the side close to the second magnet is the same as the magnetic pole of the second magnet on the side close to the tweeter radiation surface;

[0016] And / or, the tweeter diaphragm is a planar diaphragm, and the material of the planar diaphragm is any one of PEN, LCP, PEEK, carbon paper, and magnesium-lithium alloy;

[0017] And / or, the tweeter voice coil is fixed to a side of the tweeter diaphragm facing the tweeter magnetic circuit portion, the tweeter voice coil is a flat voice coil formed by winding enameled wire, and the central axis of the flat voice coil is perpendicular to the tweeter radiation surface; or, the tweeter voice coil includes a coil structure formed by a circuit board and a conductive circuit arranged on the circuit board;

[0018] And / or, the tweeter diaphragm is a planar diaphragm, and a reinforcement portion is provided in the central area of ​​the tweeter diaphragm.

[0019] In one embodiment, the bass magnetic circuit portion includes a magnetic yoke and a central magnetic portion, a common magnetic portion and a side magnetic portion arranged on the magnetic yoke, the common magnetic portion is located on the outside of the central magnetic portion and is spaced from the central magnetic portion to form a first bass magnetic gap, the side magnetic portion is located on the outside of the common magnetic portion and is spaced from the common magnetic portion to form a second bass magnetic gap, and the treble magnetic circuit portion is located on the outside of the side magnetic portion.

[0020] In one embodiment, the central magnetic portion includes a first central magnet, a central magnetic conductive plate, and a second central magnet arranged in a stacked manner; the common magnetic portion includes a first common magnet, a common magnetic conductive plate, and a second common magnet arranged in a stacked manner; the side magnetic portion includes a side magnet and a side magnetic conductive plate arranged in a stacked manner; and the side magnetic conductive plate is connected to the housing.

[0021] Wherein, the first central magnet, the central magnetic conductive plate and the second central magnet respectively correspond to the first common magnet, the common magnetic conductive plate and the second common magnet in a direction parallel to the bass radiating surface;

[0022] An inner ring hole is provided in the center of the bass diaphragm, the outer periphery of the bass diaphragm is connected to the outer shell, the inner periphery of the bass diaphragm is connected to the bass magnetic circuit part, and the top surface height of the diaphragm is lower than the top surface height of the bass magnetic circuit part.

[0023] In one embodiment, the first central magnet and the second central magnet are both magnetized along the vibration direction of the bass diaphragm, and the magnetic poles of the first central magnet and the second central magnet close to the central magnetic conductive plate are the same;

[0024] The first common magnet and the second common magnet are both magnetized along the vibration direction of the bass diaphragm, and the magnetic poles of the first common magnet and the second common magnet close to the common magnetic conductive plate are the same, and the side magnets are magnetized along the vibration direction of the bass diaphragm;

[0025] The magnetic poles of the first central magnet and the second central magnet close to the central magnetic conductive plate are opposite to the magnetic poles of the first common magnet and the second common magnet close to the common magnetic conductive plate;

[0026] The magnetic poles of the side magnets close to the side magnetic conductive plates are the same as the magnetic poles of the first central magnet close to the central magnetic conductive plates, and the magnetic poles of the side magnets close to the side magnetic conductive plates are opposite to the magnetic poles of the first common magnet close to the common magnetic conductive plates.

[0027] In one embodiment, the magnetically conductive yoke includes a first magnetic yoke and a second magnetic yoke, the first central magnet, the first common magnet, and the side magnets are connected to the first magnetic yoke, and the second central magnet and the second common magnet are connected to the second magnetic yoke;

[0028] The inner periphery of the bass diaphragm is connected to the second magnetic yoke so that a portion of the second magnetic yoke corresponds to the inner annular hole.

[0029] In one embodiment, the bass diaphragm includes an inner ring portion, a first fold ring arranged around the inner ring portion, a straight portion arranged around the first fold ring, a second fold ring arranged around the straight portion, and a fixed portion connected to the outer side of the second fold ring, the fixed portion is connected to the outer shell, the inner ring portion forms the inner ring hole, and the inner ring portion is connected to the periphery of the second magnetic yoke.

[0030] In one embodiment, the inner ring portion, the first fold ring, the straight portion, the second fold ring and the fixing portion are an integrally formed structure;

[0031] And / or, the top surface height of the edge magnetic portion is lower than the top surface height of the common magnetic portion, the protrusion direction of the first fold is toward a direction away from the magnetic circuit system, the protrusion direction of the second fold is opposite to the protrusion direction of the first fold, the first fold is at least partially opposite to the second bass magnetic gap, and the second fold is at least partially opposite to the edge magnetic portion;

[0032] And / or, a avoidance structure is provided on the periphery of the second common magnet adjacent to the second bass magnetic gap;

[0033] And / or, the second magnetic yoke includes a protrusion and an edge portion connected to the protrusion, the inner ring portion is connected to the edge portion so that the protrusion passes through the inner ring hole, the protrusion forms a recessed groove facing the central magnetic portion, and the second central magnet has a protrusion protruding from the second common magnet, and the protrusion is accommodated and confined in the recessed groove.

[0034] In one embodiment, the common magnetic portion is provided with an avoidance gap connecting the first bass magnetic gap and the second bass magnetic gap;

[0035] The bass vibration unit also includes a skeleton, which includes a main body and a connecting part connected to the main body. The main body is connected to the bass diaphragm, and the connecting part is located in the avoidance gap. The two ends of the connecting part are respectively connected to the first bass voice coil and the second bass voice coil.

[0036] In one embodiment, an escape space is formed between the edge magnetic portion and the housing;

[0037] The bass vibration unit further includes a centering support plate, one end of which is connected to the housing, and the other end of which is located in the avoidance space;

[0038] The skeleton further includes an extension portion, one end of which is connected to the periphery of the main body portion, and the other end of which extends toward the centering support piece and is connected to the centering support piece.

[0039] In one embodiment, the main body is arranged in a rectangular ring, the connecting portion includes a plurality of connecting portions, the plurality of connecting portions are respectively arranged corresponding to the four corners of the main body, and the common magnetic portion is provided with an avoidance notch corresponding to each of the connecting portions;

[0040] And / or, a first connecting surface and a second connecting surface are respectively provided at both ends of the connecting portion, the first connecting surface is connected to the first woofer voice coil, and the second connecting surface is connected to the second woofer voice coil;

[0041] And / or, the shell has two long sides and two short sides connected end to end, the centering supports include two, the two centering supports are symmetrically arranged and respectively correspond to the two short sides, and the tweeter magnetic circuit part and the tweeter vibration unit are arranged corresponding to the long sides.

[0042] In one embodiment, a size of the sound-generating device along the vibration direction of the bass vibration unit is smaller than a size of the sound-generating device along the vibration direction of the treble vibration unit.

[0043] In one embodiment, the sound-emitting device is installed in a housing of a sound-emitting module and forms mutually isolated bass front cavity, treble front cavity, and rear cavity with the housing. The housing is provided with a bass sound outlet hole connected to the bass front cavity and a treble sound outlet hole connected to the treble front cavity. Sound waves of the bass diaphragm are radiated to the outside through the bass sound outlet hole, and sound waves of the treble radiation surface are radiated to the outside through the treble sound outlet hole.

[0044] Wherein, the volume of the rear cavity is ≤1.5cc.

[0045] The present utility model also provides an electronic device, which includes the above-mentioned sound-generating device.

[0046] The sound-generating device of the present invention integrates the bass and treble units by configuring the magnetic circuit system to include a bass magnetic circuit portion and a treble magnetic circuit portion, and configuring the vibration system to include a bass vibration unit and a treble vibration unit. The periphery of the bass diaphragm is connected to the housing, and the treble vibration unit is connected to the housing and is disposed opposite and spaced from the treble magnetic circuit portion, thereby integrating the bass and treble units. Furthermore, by configuring the bass magnetic circuit portion of the magnetic circuit system to have a first bass magnetic gap and a second bass magnetic gap, the first bass voice coil of the bass vibration unit of the vibration system is disposed correspondingly to the first bass magnetic gap, and the second bass voice coil is disposed correspondingly to the second bass magnetic gap, forming a dual voice coil structure. Current is then passed through the first and second bass voice coils, causing the two voice coils to vibrate within the magnetic fields of the first and second bass magnetic gaps formed by the bass magnetic circuit portion of the magnetic circuit system, respectively, and driving the bass diaphragm to vibrate and produce sound, thereby improving the BL value. Furthermore, by configuring the bass radiation surface formed by the bass vibration unit and the treble radiation surface formed by the treble vibration unit at an angle, the bass and treble sounds of the sound-generating device do not interfere with each other, thereby improving the sound effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0048] Figure 1 A structural diagram of an embodiment of a sound-generating device provided by the present utility model;

[0049] Figure 2 A cross-sectional schematic diagram of an embodiment of a sound-generating device provided by the present utility model;

[0050] Figure 3 This is an exploded schematic diagram of an embodiment of the sound-generating device provided by the present utility model;

[0051] Figure 4 A partial structural diagram of an embodiment of a sound-generating device provided by the present utility model;

[0052] Figure 5 This is an exploded schematic diagram of an embodiment of the bass magnetic circuit provided by the present invention;

[0053] Figure 6 This is a structural diagram of an embodiment of a bass diaphragm provided by the present invention;

[0054] Figure 7A schematic structural diagram of an embodiment of a skeleton provided by the present invention;

[0055] Figure 8 This is a structural diagram of an embodiment of a sound module provided by the present invention;

[0056] Figure 9 This is an exploded schematic diagram of an embodiment of a sound module provided by the present invention;

[0057] Figure 10 A cross-sectional schematic diagram of an embodiment of a sound module provided by the present utility model;

[0058] Figure 11 This is a cross-sectional schematic diagram from another perspective of an embodiment of the sound module provided by the present invention.

[0059] Description of Figure Numbers:

[0060] 100. Sound-generating device; 1. Housing; 11. Frame body; 111. Long side; 112. Short side; 113. Avoidance space; 12. Mounting sidewall; 121. Mounting space; 122. Mounting hole; 2. Magnetic circuit system; 21. Bass magnetic circuit portion; 211. Magnetic yoke; 2111. First magnetic yoke; 2112. Second magnetic yoke; 2113. Raised portion; 2114. Edge portion; 2115. Recessed groove; 212. Central magnetic portion; 2121. First central magnet ; 2122, center magnetic plate; 2123, second center magnet; 2124, protrusion; 213, common magnetic part; 2131, first common magnet; 2132, common magnetic plate; 2133, second common magnet; 2134, avoidance structure; 2135, avoidance gap; 214, side magnetic part; 2141, side magnet; 2142, side magnetic plate; 215, first bass magnetic gap; 216, second bass magnetic gap; 22, treble magnetic circuit part; 221, first First magnet; 222, second magnet; 223, third magnet; 3, vibration system; 31, bass vibration unit; 311, bass diaphragm; 3111, inner ring; 3112, inner ring hole; 3113, first fold; 3114, flat portion; 3115, second fold; 3116, fixing portion; 3117, bass radiation surface; 312, first bass voice coil; 313, second bass voice coil; 314, skeleton; 3141, main body; 3142, connecting portion; 3143. Extension part; 3144. First connecting surface; 3145. Second connecting surface; 315. Centering support plate; 32. Tweeter vibration unit; 321. Tweeter diaphragm; 322. Tweeter voice coil; 323. Tweeter radiation surface; 400. Shell; 411. Bass sound outlet; 412. Tweeter sound outlet; 413. Tweeter sound guide; 414. Upper shell; 415. Lower shell; 421. Bass front cavity; 422. Tweeter front cavity; 430. Rear cavity; 500. Sound module.

[0061] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0063] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0064] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0065] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0066] In recent years, convenient electronic devices (such as mobile phones, headphones, and computers) have become part of people's daily lives. With the rapid development of science and technology, people's demands for the sound quality of electronic devices are getting higher and higher, and full-frequency and miniaturization of speakers have become mainstream demands. With the multifunctional and miniaturized design of portable terminal electronic products, higher requirements are placed on the vibration and acoustic performance of miniature sound-generating devices. Usually, a sound-generating device generally includes a magnetic circuit system and a vibration system, wherein the vibration system includes a diaphragm and a voice coil coupled to one side of the diaphragm. The energized voice coil can drive the diaphragm to vibrate under the action of the magnetic circuit system, thereby realizing the sound of the sound-generating device.

[0067] In the related art, a common full-frequency solution is to assemble a woofer and a tweeter in one electronic device at the same time. However, due to the limited space of the electronic device, the size of the two units is greatly restricted, which affects the full-frequency effect of the speaker, resulting in lower performance and inability to achieve better sound quality. At the same time, a single voice coil solution is usually used in small rear cavity sound-emitting devices (usually the rear cavity is less than 1.5cc). The voice coil has a low utilization rate of the magnetic field generated by the magnetic circuit system, and the vibration effect of the voice coil driving the diaphragm is also not ideal, thereby reducing the BL value of the woofer. In addition, the utilization rate of the magnetic energy in the middle area of ​​the central magnet in the magnetic circuit system is low and cannot be effectively utilized, thus affecting the loudness and sensitivity of the woofer. The loudness of miniature sound-emitting devices generally cannot meet the demand, so it is an important task to further improve the utilization rate of the magnet and enhance the sensitivity of the sound-emitting device.

[0068] Based on the above ideas and problems, the present invention proposes a sound-generating device 100. It is understandable that the sound-generating device 100 is applied to electronic devices, which may be mobile phones, computers, headphones, watches, etc., without limitation herein.

[0069] Please refer to Figures 1 to 7 As shown, in the embodiment of the present invention, the sound-generating device 100 includes a housing 1, a magnetic circuit system 2 and a vibration system 3. The magnetic circuit system 2 is connected to the housing 1. The magnetic circuit system 2 includes a bass magnetic circuit portion 21 and a treble magnetic circuit portion 22. The bass magnetic circuit portion 21 has a first bass magnetic gap 215 and a second bass magnetic gap 216. The treble magnetic circuit portion 22 is located outside the bass magnetic circuit portion 21. The vibration system 3 includes a bass vibration unit 31 and a treble vibration unit 32. The bass vibration unit 31 includes a bass diaphragm 311 and a connection In the bass diaphragm 311, there are a first bass voice coil 312 and a second bass voice coil 313, and the first bass voice coil 312 is arranged corresponding to the first bass magnetic gap 215, and the second bass voice coil 313 is arranged corresponding to the second bass magnetic gap 216. The tweeter vibration unit 32 is connected to the housing 1 and is opposite to and spaced from the tweeter magnetic circuit part 22; wherein, the bass vibration unit 31 has a bass radiation surface 3117, and the tweeter vibration unit 32 has a tweeter radiation surface 323, and the bass radiation surface 3117 and the tweeter radiation surface 323 are arranged at an angle.

[0070] In this embodiment, the housing 1 is used to install, fix, support and protect components such as the vibration system 3 and the magnetic circuit system 2, that is, the housing 1 provides an installation base for components such as the vibration system 3 and the magnetic circuit system 2. It can be understood that the housing 1 can be a mounting shell, a shell or a box body with a mounting cavity, that is, the housing 1 defines a receiving space, which is not limited here. Optionally, the housing 1 is a rectangular structure, and the housing 1 has two opposite long sides 111 and two short sides 112, and the two ends of the short side 112 are respectively connected to the two long sides 111, and the two ends of the long side 111 are respectively connected to the two short sides 112, so that the housing 1 defines a receiving space.

[0071] It is understood that when the housing 1 is metal, the magnetic circuit system 2 is fixed to the housing 1 by bonding or welding. In another embodiment, when the housing 1 is plastic injection molded, the side magnetic conductive plate 2142 of the magnetic circuit system 2 is first injection molded into the housing 1 as an insert, or the magnetic circuit system 2 is fixed to the housing 1 by bonding, and then the other parts are bonded and fixed, which is not limited here.

[0072] In this embodiment, the magnetic circuit system 2 is disposed within the receiving space and connected to the housing 1. It is understood that by configuring the bass magnetic circuit portion 21 of the magnetic circuit system 2 to have a first bass magnetic gap 215 and a second bass magnetic gap 216, and configuring the bass vibration unit 31 of the vibration system 3 to include a bass diaphragm 311 and a first bass voice coil 312 and a second bass voice coil 313 connected to the bass diaphragm 311, the first bass voice coil 312 of the bass vibration unit 31 is configured to correspond to the first bass magnetic gap 215, and the second bass voice coil 313 is configured to correspond to the second bass magnetic gap 216, thereby forming a dual voice coil structure. At the same time, the treble magnetic circuit part 22 of the magnetic circuit system 2 is located on the outside of the side magnetic part 214, and the treble vibration unit 32 of the vibration system 3 is connected to the outer shell 1, and is opposite to and spaced apart from the treble magnetic circuit part 22, so that the bass and treble units are integrated into one, which makes the occupied space smaller and the spatial adaptability of the whole machine higher, thereby realizing the full-frequency and miniaturization of the sound-emitting device 100, and by optimizing the bass magnetic circuit part 21 of the magnetic circuit system 2, the bass vibration unit 31 adopts inner and outer double voice coils to further improve the utilization rate of the magnetic circuit system 2, and improve the BL value, thereby improving the loudness and sensitivity of the sound-emitting device 100.

[0073] In one embodiment, the bass magnetic circuit portion 21 includes a magnetic yoke 211 and a central magnetic portion 212, a common magnetic portion 213 and a side magnetic portion 214 provided on the magnetic yoke 211. The common magnetic portion 213 is located on the outside of the central magnetic portion 212 and is spaced from the central magnetic portion 212 to form a first bass magnetic gap 215. The side magnetic portion 214 is located on the outside of the common magnetic portion 213 and is spaced from the common magnetic portion 213 to form a second bass magnetic gap 216. The treble magnetic circuit portion 22 is located on the outside of the side magnetic portion 214.

[0074] In this embodiment, the first bass voice coil 312 and the second bass voice coil 313 are annular racetrack voice coils, one end of the first bass voice coil 312 and the second bass voice coil 313 are connected to the bass diaphragm 311, and the other ends of the first bass voice coil 312 and the second bass voice coil 313 are suspended in the first bass magnetic gap 215 and the second bass magnetic gap 216, respectively, which is not limited here.

[0075] It should be noted that, by supplying current to the first bass voice coil 312 and the second bass voice coil 313, the first bass voice coil 312 and the second bass voice coil 313 transfer electrical energy to the first bass magnetic gap 215 and the second bass magnetic gap 216 of the bass magnetic circuit part 21, so that the magnetic field generated by the magnetic circuit system 2 converts the electrical energy into mechanical energy, thereby causing the first bass voice coil 312 and the second bass voice coil 313 to vibrate, and at the same time drive the bass diaphragm 311 to vibrate and produce sound, further converting the mechanical energy into sound energy.

[0076] It can be understood that after receiving the externally varying AC signal, the first bass voice coil 312 disposed within the first bass magnetic gap 215, driven by the magnetic field force of the bass magnetic circuit portion 21 of the magnetic circuit system 2, performs a reciprocating motion cutting through the magnetic field lines, thereby driving the bass diaphragm 311 of the bass vibration unit 31 of the vibration system 3 to vibrate and produce sound. Simultaneously, after receiving the transmitted AC signal, the second bass voice coil 313, driven by the magnetic field force of the bass magnetic circuit portion 21 in the magnetic circuit system 2 at the second bass magnetic gap 216, performs a reciprocating motion cutting through the magnetic field lines, thereby fully utilizing the magnetic field of the magnetic circuit system 2. This allows the first bass voice coil 312 and the second bass voice coil 313 to cooperate to increase the driving force on the bass diaphragm 311, thereby effectively improving the BL value of the sound-generating device 100 and enhancing the vibration effect of the bass diaphragm 311.

[0077] In this embodiment, the first bass voice coil 312 and the second bass voice coil 313 can be connected in series or in parallel via a conductive structure, which is not limited here. In order to achieve electrical connection between the first bass voice coil 312 and the second bass voice coil 313 and the external circuit. In one embodiment, the vibration system 3 also includes a centering support plate or a connector or a skeleton 314, one end of which is connected to the first bass voice coil 312 and the second bass voice coil 313, and is connected to the leads of the first bass voice coil 312 and the second bass voice coil 313, and the other end of the centering support plate or the connector or the skeleton 314 is connected to the housing 1.

[0078] As can be understood, taking the centering damper as an example, the two ends of the centering damper are electrically connected to the leads and external circuitry of the first and second bass voice coils 312, 313, respectively. In this embodiment, the centering dampers can be disposed at the bottom of the first and second bass voice coils 312, 313, located at the four corners of the sound-producing device 100 or along the minor or major axis of the sound-producing device 100. Of course, the centering dampers can also be disposed at the tops of the first and second bass voice coils 312, 313, and located between the first and second bass voice coils 312, 313 and the bass diaphragm 311, but this is not a limitation here.

[0079] In one embodiment, the direction of the current in the second bass voice coil 313 is opposite to the direction of the current in the first bass voice coil 312. It is understood that the current in the second bass voice coil 313 flows counterclockwise, and the current in the first bass voice coil 312 flows clockwise. This arrangement ensures that the vibration direction of the first bass voice coil 312 in the first bass magnetic gap 215 and the vibration direction of the second bass voice coil 313 in the second bass magnetic gap 216 are the same, thereby ensuring that the bass diaphragm 311 vibrates in the same direction at the same time, thereby improving the vibration effect on the bass diaphragm 311.

[0080] In this embodiment, the magnetic yoke 211 of the bass magnetic circuit part 21 in the magnetic circuit system 2 is opposite to the bass diaphragm 311, and the central magnetic part 212, the common magnetic part 213 and the side magnetic part 214 are all arranged on the side of the magnetic yoke 211 facing the bass diaphragm 311. The bass magnetic circuit part 21 can be connected to the outer shell 1 through the side magnetic part 214 and / or the magnetic yoke 211.

[0081] Alternatively, the magnetic yoke 211 may be a magnetic plate or a magnetic frame, and is not limited here. The magnetic yoke 211 is used to support and secure the central magnetic portion 212, the common magnetic portion 213, and the edge magnetic portion 214. In this embodiment, the magnetic yoke 211 is bonded to the central magnetic portion 212, the common magnetic portion 213, and the edge magnetic portion 214, and the edge magnetic portion 214 is bonded to the housing 1.

[0082] It can be understood that by arranging the tweeter magnetic circuit part 22 on the outside of the side magnetic part 214, and connecting the tweeter vibration unit 32 to the outer shell 1, and arranging it opposite to and spaced apart from the tweeter magnetic circuit part 22, the tweeter magnetic circuit part 22 is used to drive the tweeter vibration unit 32 to vibrate and make sound, and at the same time, the bass radiation surface 3117 of the bass vibration unit 31 and the treble radiation surface 323 of the tweeter vibration unit 32 are set at an angle, so that the bass sound and the treble sound of the sound-emitting device 100 do not interfere with each other, thereby improving the sound effect.

[0083] In one embodiment, if Figures 1 to 3 、 Figure 6As shown, an inner ring hole 3112 is provided in the center of the bass diaphragm 311, the outer periphery of the bass diaphragm 311 is connected to the outer shell 1, the inner periphery of the bass diaphragm 311 is connected to the bass magnetic circuit part 21, and the top surface height of the diaphragm 31 is lower than the top surface height of the bass magnetic circuit part 21.

[0084] It can be understood that by setting the bass diaphragm 311 as a ring structure, the inner periphery of the bass diaphragm 311 is connected to the magnetic circuit system 2, so that part of the magnetic circuit system 2 corresponds to the inner ring hole 3112, and the top surface height of the diaphragm 31 is lower than the top surface height of the bass magnetic circuit part 21. In this way, when the sound-emitting device 100 is applied to a module or electronic device, the magnetic circuit system 2 of the sound-emitting device 100 can be used to abut the inner wall of the shell of the electronic device, so that a bass front cavity is formed between the bass diaphragm 311 and the shell, that is, there is no need to increase the front cavity space, and the height difference between the magnetic circuit system 2 and the bass diaphragm 311 in the vibration system 3 can be used to form a front sound cavity structure, thereby effectively reducing the Z-direction height of the electronic device.

[0085] The sound-generating device 100 of the present invention connects the magnetic circuit system 2 to one end of the housing 1, and sets the magnetic circuit system 2 as a bass magnetic circuit part 21 and a treble magnetic circuit part 22, and sets the vibration system 3 as a bass vibration unit 31 and a treble vibration unit 32, so that the periphery of the bass diaphragm 311 is connected to the housing 1, and the treble vibration unit 32 is connected to the housing 1, and is opposite to and spaced apart from the treble magnetic circuit part 22, thereby realizing the integration of the bass and treble units into one; at the same time, by setting the bass magnetic circuit part 21 of the magnetic circuit system 2 as a magnetic yoke 211 and a central magnetic part 212, a common magnetic part 213 and a side magnetic part 214 provided on the magnetic yoke 211, the common magnetic part 213 is located on the outside of the central magnetic part 212, and is spaced apart from the central magnetic part 212 to form a first bass magnetic gap 215, and the side magnetic part 214 is located on the outside of the common magnetic part 213, and is spaced apart from the common magnetic part 214 to form a first bass magnetic gap 215. The magnetic part 213 is used to separate to form a second bass magnetic gap 216, so that the first bass voice coil 312 of the bass vibration unit 31 in the vibration system 3 is set corresponding to the first bass magnetic gap 215, and the second bass voice coil 313 is set corresponding to the second bass magnetic gap 216, forming an inner and outer double voice coil structure. In this way, current is passed through the first bass voice coil 312 and the second bass voice coil 313, so that the two voice coils vibrate in the magnetic fields of the first bass magnetic gap 215 and the second bass magnetic gap 216 formed by the bass magnetic circuit part 21 of the magnetic circuit system 2 respectively and drive the bass diaphragm 311 to vibrate and make sound, so as to improve the BL value; further, by setting the bass radiation surface 3117 formed by the bass vibration unit 31 and the treble radiation surface 323 formed by the treble vibration unit 32 to an angle setting, the bass sound and the treble sound of the sound-generating device 100 do not interfere with each other, thereby improving the sound effect.

[0086] In one embodiment, the housing 1 includes a frame body 11 and a mounting side wall 12. The mounting side wall 12 is arranged on one side of the frame body 11 and is enclosed with the outer wall of the frame body 11 to form an mounting space 121. The mounting side wall 12 is provided with a mounting hole 122 connected to the mounting space 121; the periphery of the bass diaphragm 311 is connected to one end of the frame body 11, the bass magnetic circuit part 21 and the treble magnetic circuit part 22 are arranged in the mounting space 121, the treble magnetic circuit part 22 is arranged corresponding to the mounting hole 122, and the treble vibration unit 32 is connected to the mounting side wall 12 and covered in the mounting hole 122.

[0087] In this embodiment, if Figures 1 to 4 As shown, by setting the outer shell 1 as a frame body 11 and an installation side wall 12, the frame body 11 is made into a square or rectangular frame, so that the frame body 11 is used to install and fix the bass magnetic circuit part 21 of the magnetic circuit system 2 and the bass vibration unit 31 of the vibration system 3, and at the same time, the installation side wall 12 is set on one side of the frame body 11, and is enclosed with the outer wall of the frame body 11 to form an installation space 121, and an installation hole 122 connected to the installation space 121 is provided on the installation side wall 12, so that the installation space 121 formed by the installation side wall 12 and the frame body 11 can be used to install and fix the treble magnetic circuit part 22 of the magnetic circuit system 2, and at the same time, the installation side wall 12 is used to install and fix the treble vibration unit 32 of the vibration system 3.

[0088] It is understood that the plane connecting the frame body 11 and the bass diaphragm 311 of the bass vibration unit 31 is arranged at an angle to the plane connecting the mounting side wall 12 and the tweeter vibration unit 32, so that the bass radiation surface 3117 of the bass vibration unit 31 is arranged at an angle to the tweeter radiation surface 323 of the tweeter vibration unit 32. Optionally, the bass radiation surface 3117 and the tweeter radiation surface 323 are arranged perpendicularly.

[0089] In this embodiment, if Figures 1 to 4 As shown, the bass diaphragm 311 of the bass vibration unit 31 in the vibration system 3 vibrates in the vertical direction, that is, the bass radiation surface 3117 of the bass vibration unit 31 is horizontally set (that is, perpendicular to the vertical direction), and the bass vibration unit 31 radiates sound waves in the vertical direction. The treble vibration unit 32 in the vibration system 3 vibrates in the horizontal direction, that is, the treble radiation surface 323 of the treble vibration unit 32 is vertically set (that is, perpendicular to the horizontal direction), and the treble vibration unit 32 radiates sound waves in the horizontal direction.

[0090] In one embodiment, the tweeter magnetic circuit portion 22 includes a first magnet 221, a second magnet 222 and a third magnet 223 arranged in the installation space 121, and the first magnet 221, the second magnet 222 and the third magnet 223 are stacked in a direction parallel to the tweeter radiation surface 323, the first magnet 221 is away from the bass diaphragm 31, and the third magnet 223 is connected to the frame body 11; the tweeter vibration unit 32 includes a tweeter diaphragm 321 and a tweeter voice coil 322 connected to the tweeter diaphragm 321, the tweeter diaphragm 321 is connected to the installation side wall 12 and covers the installation hole 122, the tweeter voice coil 322 is located in the installation hole 122, and is opposite to and spaced apart from the tweeter magnetic circuit portion 22.

[0091] In this embodiment, if Figures 2 to 4 As shown, by setting the tweeter magnetic circuit part 22 to the first magnet 221, the second magnet 222 and the third magnet 223 which are stacked, the first magnet 221, the second magnet 222 and the third magnet 223 are stacked in a direction parallel to the tweeter radiation surface 323, so that the tweeter diaphragm 321 and the tweeter voice coil 322 of the tweeter vibration unit 32 are opposite to and spaced apart from the first magnet 221, the second magnet 222 and the third magnet 223.

[0092] Optionally, the tweeter voice coil 322 is a planar, annular voice coil. In this embodiment, the tweeter voice coil 322 has two long axis sides and two short axis sides connected end to end. Optionally, the two long axis sides or the two short axis sides of the tweeter voice coil 322 correspond to the connection between the first magnet 221 and the second magnet 222, and the connection between the second magnet 222 and the third magnet 223, respectively. This allows the magnetic lines of force generated by the tweeter magnetic circuit portion 22 to smoothly pass through the two long axis sides or the two short axis sides of the tweeter voice coil 322.

[0093] In this embodiment, the tweeter diaphragm 321 can be a planar diaphragm, and the tweeter voice coil 322 is fixed to the side of the tweeter diaphragm 321 facing the tweeter magnetic circuit part 22, and is opposite to and spaced from the tweeter magnetic circuit part 22.

[0094] In one embodiment, tweeter diaphragm 321 is a planar diaphragm made of any one of PEN, LCP, PEEK, carbon paper, and a magnesium-lithium alloy. In this embodiment, the manufacturing process for the planar diaphragm is simple, reducing production costs. Alternatively, the planar diaphragm can be made of any one of PEN, LCP, PEEK, carbon paper, and a magnesium-lithium alloy. These materials offer high rigidity and low density, resulting in a lightweight planar diaphragm and improved sound performance.

[0095] Optionally, the tweeter diaphragm 321 is a planar diaphragm, and a reinforcement portion is provided in the central region of the tweeter diaphragm 321. It is understood that providing the reinforcement portion in the central region of the planar diaphragm can further increase the rigidity of the planar diaphragm and improve its sound performance. The reinforcement portion can be made of any one of PEN, LCP, PEEK, carbon paper, and magnesium-lithium alloy, and the material can be flexibly selected according to needs and is not limited here.

[0096] Of course, in other embodiments, the tweeter diaphragm 321 includes a folding ring portion and a reinforcement portion arranged at the center of the folding ring portion. In this way, after the material and thickness of the reinforcement portion are determined, the width or material of the folding ring portion can be further adjusted to adjust the resonance frequency to meet usage requirements.

[0097] In one embodiment, the tweeter voice coil 322 is fixed to the side of the tweeter diaphragm 321 facing the tweeter magnetic circuit part 22. The tweeter voice coil 322 is a flat voice coil formed by winding enameled wire, and the central axis of the flat voice coil is perpendicular to the tweeter radiation surface 323; or, the tweeter voice coil 322 includes a coil structure formed by a circuit board and a conductive circuit arranged on the circuit board.

[0098] As will be appreciated, the tweeter voice coil 322 can be formed by winding enameled wire; alternatively, the tweeter voice coil 322 can include a coil structure formed by a circuit board and conductive traces arranged on the circuit board. Compared to conventional annular voice coils, flat voice coils have a smaller axial dimension, further reducing the space occupied by the sound device 100 along the vibration direction of the tweeter vibration unit 32.

[0099] In one embodiment, the first magnet 221 , the second magnet 222 and the third magnet 223 are magnetized in a direction perpendicular to the tweeter radiation surface 323 , and the magnetization direction of the second magnet 222 is opposite to that of the first magnet 221 and the third magnet 223 .

[0100] In this embodiment, by magnetizing the first magnet 221, the second magnet 222 and the third magnet 223 of the tweeter magnetic circuit part 22, the first magnet 221, the second magnet 222 and the third magnet 223 are all magnetized in a direction perpendicular to the tweeter radiation surface 323, that is, the first magnet 221, the second magnet 222 and the third magnet 223 are all magnetized in a horizontal direction, and the magnetizing direction of the second magnet 222 is opposite to the magnetizing direction of the first magnet 221 and the third magnet 223. This effectively improves the magnetic field strength of the tweeter magnetic circuit part 22, increases the number of magnetic lines of force passing through the tweeter voice coil 322, increases the magnetic field force on the tweeter voice coil 322, effectively improves the BL value, and improves the sensitivity of the sound-emitting device 100.

[0101] It can be understood that the magnetic pole of the first magnet 221 facing the tweeter voice coil 322 is the same as the magnetic pole of the third magnet 223 facing the tweeter voice coil 322, and the magnetic pole of the second magnet 222 facing the tweeter voice coil 322 is opposite to the magnetic poles of the first magnet 221 and the third magnet 223 facing the tweeter voice coil 322.

[0102] In this embodiment, when the second magnet 222 is magnetized from left to right, the first magnet 221 and the third magnet 223 are magnetized from right to left. That is, when the south pole of the second magnet 222 is on the left and the north pole is on the right, the south pole of the first magnet 221 and the third magnet 223 are on the right and the north pole is on the left, and vice versa.

[0103] In another embodiment, the second magnet 222 is magnetized in a direction perpendicular to the tweeter radiation surface 323, and the first magnet 221 and the third magnet 223 are magnetized in a direction parallel to the tweeter radiation surface 323, and the magnetization direction of the first magnet 221 is opposite to the magnetization direction of the third magnet 223, and the magnetic pole of the first magnet 221 close to the second magnet 222 is the same as the magnetic pole of the second magnet 222 close to the tweeter radiation surface 323.

[0104] In this embodiment, the magnetization direction of the second magnet 222 is arranged at an angle to the magnetization directions of the first magnet 221 and the third magnet 223. Optionally, the magnetization direction of the second magnet 222 is arranged perpendicular to the magnetization directions of the first magnet 221 and the third magnet 223. Specifically, the second magnet 222 is magnetized in a direction perpendicular to the tweeter radiation surface 323, that is, the second magnet 222 is magnetized in a horizontal direction, and the first magnet 221 and the third magnet 223 are magnetized in a direction parallel to the tweeter radiation surface 323, that is, the first magnet 221 and the third magnet 223 are magnetized in a vertical direction.

[0105] Optionally, the magnetization direction of the first magnet 221 is opposite to that of the third magnet 223, and the magnetic pole of the first magnet 221 on the side closest to the second magnet 222 is the same as the magnetic pole of the second magnet 222 on the side closest to the tweeter radiating surface 323. As can be understood, this allows the tweeter magnetic circuit portion 22 to form a Halbach magnetic array, which has a magnetic field enhancement side facing the tweeter voice coil 322. This effectively increases the magnetic field strength, the number of magnetic field lines passing through the tweeter voice coil 322, and the magnetic field force acting on the tweeter voice coil 322, effectively improving the BL value and enhancing the sensitivity of the sound-generating device 100.

[0106] It should be noted that Figure 2The arrow in the illustrated magnetic circuit system 2 indicates the direction from the south pole to the north pole, i.e., the magnetization direction. In this embodiment, when the second magnet 222 is magnetized from left to right, the first magnet 221 is magnetized from bottom to top, and the third magnet 223 is magnetized from top to bottom. That is, when the south pole of the second magnet 222 is on the left and the north pole is on the right, the north pole of the first magnet 221 is at the top and the south pole is at the bottom, and the north pole of the third magnet 223 is at the bottom and the south pole is at the top, and vice versa.

[0107] In one embodiment, the central magnetic portion 212 includes a first central magnet 2121, a central magnetic plate 2122 and a second central magnet 2123 that are stacked, the common magnetic portion 213 includes a first common magnet 2131, a common magnetic plate 2132 and a second common magnet 2133 that are stacked, the side magnetic portion 214 includes a side magnet 2141 and a side magnetic plate 2142 that are stacked, and the side magnetic plate 2142 is connected to the outer shell 1; wherein the first central magnet 2121, the central magnetic plate 2122 and the second central magnet 2123 correspond one-to-one with the first common magnet 2131, the common magnetic plate 2132 and the second common magnet 2133 in a direction parallel to the bass radiation surface 3117.

[0108] In this embodiment, if Figures 2 to 5 As shown, by setting the central magnetic part 212 of the bass magnetic circuit part 21 as a first central magnet 2121, a central magnetic plate 2122 and a second central magnet 2123 which are stacked, and setting the common magnetic part 213 as a first common magnet 2131, a common magnetic plate 2132 and a second common magnet 2133 which are stacked, the first central magnet 2121, the central magnetic plate 2122 and the second central magnet 2123 of the central magnetic part 212 are respectively stacked with the first common magnet 2131, the common magnetic plate 2132 and the second common magnet 2133 of the common magnetic part 213. The common magnetic conductive plate 2132 and the second common magnet 2133 correspond to each other in a vibration direction perpendicular to the bass diaphragm 311. In this way, the common magnetic portion 213 is shared by the central magnetic portion 212 and the side magnetic portion 214, and a first bass magnetic gap 215 and a second bass magnetic gap 216 are formed, so that the first bass voice coil 312 and the second bass voice coil 313 can fully utilize the magnetic field of the magnetic circuit system 2, improve the magnetic energy utilization rate of the magnetic circuit system 2, thereby improving the loudness and sensitivity of the sound-emitting device 100, thereby improving product performance.

[0109] It is understood that the bass radiating surface 3117 is arranged perpendicular to the vibration direction of the bass diaphragm 311, and the vibration direction of the bass diaphragm 311 is consistent with the sound wave radiation direction of the bass diaphragm 311. Optionally, the side magnetic conductive plate 2142 of the side magnetic portion 214 can be bonded to the housing 1. In this embodiment, the side magnetic conductive plate 2142 and the housing 1 can be integrally formed.

[0110] In one embodiment, the magnetic yoke 211 includes a first magnetic yoke 2111 and a second magnetic yoke 2112, the first central magnet 2121, the first common magnet 2131 and the side magnet 2141 are connected to the first magnetic yoke 2111, and the second central magnet 2123 and the second common magnet 2133 are connected to the second magnetic yoke 2112; the inner periphery of the bass diaphragm 311 is connected to the second magnetic yoke 2112 so that part of the second magnetic yoke 2112 corresponds to the inner ring hole 3112.

[0111] In this embodiment, if Figures 1 to 3 、 Figure 5 As shown, by setting the magnetic yoke 211 and the first magnetic yoke 2111 and the second magnetic yoke 2112 arranged opposite to each other, an installation space is formed between the first magnetic yoke 2111 and the second magnetic yoke 2112, the central magnetic portion 212, the common magnetic portion 213 and the side magnetic portion 214 are all arranged on the first magnetic yoke 2111, and the second magnetic yoke 2112 is connected to the end of the central magnetic portion 212 and the common magnetic portion 213 away from the first magnetic yoke 2111.

[0112] It can be understood that the central magnetic part 212 and the common magnetic part 213 are arranged between the first magnetic yoke 2111 and the second magnetic yoke 2112, that is, the first central magnet 2121 of the central magnetic part 212 and the first common magnet 2131 of the common magnetic part 213 are connected to the first magnetic yoke 2111, and the second central magnet 2123 of the central magnetic part 212 and the second common magnet 2133 of the common magnetic part 213 are connected to the second magnetic yoke 2112. By setting the bass diaphragm 311 as a ring structure, the inner ring of the bass diaphragm 311 is connected to the second magnetic yoke 2112, so that part of the second magnetic yoke 2112 corresponds to the inner ring hole 3112, and the side magnetic portion 214 is located between the magnetic yoke 211 and the bass diaphragm 311, so that the magnetic flux lines generated by the central magnetic portion 212 and the magnetic flux lines generated by the common magnetic portion 213 can effectively form a magnetic circuit passing through the first bass magnetic gap 215, and the magnetic flux lines generated by the common magnetic portion 213 and the magnetic flux lines generated by the side magnetic portion 214 can form a magnetic circuit passing through the second bass magnetic gap 216, effectively increasing the density of the magnetic flux of the first bass magnetic gap 215 and the second bass magnetic gap 216, so that the first bass voice coil 312 and the second bass voice coil 313 are in a more reasonable magnetic field, thereby alleviating the distortion of the audio output by the sound-generating device 100 and improving the sound quality of the audio output by the sound-generating device 100.

[0113] It can be understood that by connecting the inner periphery of the bass diaphragm 311 to the second magnetic yoke 2112, the bass diaphragm 311 and the second magnetic yoke 2112 are sealed, thereby improving the sealing performance. At the same time, part of the second magnetic yoke 2112 corresponds to the inner ring hole 3112. In this way, when the sound-generating device 100 is applied to a module or electronic device, the second magnetic yoke 2112 of the magnetic circuit system 2 of the sound-generating device 100 can be used to abut against the inner wall of the shell of the electronic device, so that a bass front cavity is formed between the bass diaphragm 311 and the shell, that is, there is no need to increase the front cavity space. The front sound cavity structure can be formed by utilizing the height difference between the second magnetic yoke 2112 of the magnetic circuit system 2 and the bass diaphragm 311 in the vibration system 3, thereby effectively reducing the Z-direction height of the electronic device.

[0114] Optionally, the central magnetic portion 212, the common magnetic portion 213 and the edge magnetic portion 214 are all magnetized in the vertical direction, the magnetization direction of the common magnetic portion 213 is opposite to that of the central magnetic portion 212 and the edge magnetic portion 214, and the magnetization direction of the central magnetic portion 212 and the edge magnetic portion 214 is the same. Such an arrangement can optimize the nonlinear performance of BL.

[0115] In one embodiment, the first central magnet 2121 and the second central magnet 2123 are magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3, and the magnetic poles of the first central magnet 2121 and the second central magnet 2123 near the central magnetic plate 2122 are the same; the first common magnet 2131 and the second common magnet 2133 are magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3, and the magnetic poles of the first common magnet 2131 and the second common magnet 2133 near the common magnetic plate 2132 are the same, and the side magnets 2141 are magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3. The vibration direction of the mid-bass diaphragm 311 is magnetized; the magnetic poles of the first center magnet 2121 and the second center magnet 2123 close to the center magnetic plate 2122 are opposite to the magnetic poles of the first common magnet 2131 and the second common magnet 2133 close to the common magnetic plate 2132; the magnetic poles of the side magnet 2141 close to the side magnetic plate 2142 are the same as the magnetic poles of the first center magnet 2121 close to the center magnetic plate 2122, and the magnetic poles of the side magnet 2141 close to the side magnetic plate 2142 are opposite to the magnetic poles of the first common magnet 2131 close to the common magnetic plate 2132.

[0116] In this embodiment, if Figure 2 and Figure 3 As shown, the vibration direction of the bass diaphragm 311 in the vibration system 3 can be selected to be the vertical direction. Optionally, the first common magnet 2131 and the second common magnet 2133 of the common magnetic portion 213 are magnetized in the vertical direction, and the first central magnet 2121 and the second central magnet 2123 of the central magnetic portion 212 are magnetized in the vertical direction.

[0117] It should be noted that Figure 2The arrows in the illustrated magnetic circuit system 2 are from the south pole to the north pole, i.e., the magnetization direction. The first central magnet 2121 and the second central magnet 2123 of the central magnetic portion 212 are magnetized vertically in opposite directions. The first common magnet 2131 and the second common magnet 2133 of the common magnetic portion 213 are magnetized vertically in opposite directions. It will be appreciated that this arrangement allows the central magnetic portion 212, the common magnetic portion 213, and the side magnetic portion 214 to form a magnetic circuit that passes through the first and second woofer voice coils 312, 313 within the first and second woofer magnetic gaps 215, 216.

[0118] It can be understood that the magnetization direction of the first central magnet 2121 is opposite to the magnetization direction of the second central magnet 2123. In this way, the magnetic flux lines of the first central magnet 2121 and the second central magnet 2123 of the central magnetic part 212 are concentrated on the central magnetic conductive plate 2122. The magnetic field with a strong magnetic field strength generated by the central magnetic part 212 passes through the first woofer magnetic gap 215, thereby increasing the density of the magnetic flux in the first woofer magnetic gap 215, increasing the number of magnetic flux lines passing through the first woofer voice coil 312, and increasing the magnetic field force on the first woofer voice coil 312, thereby effectively improving the BL value. At the same time, the magnetization direction of the first common magnet 2131 is opposite to the magnetization direction of the second common magnet 2133, so that the magnetic flux lines of the first common magnet 2131 and the second common magnet 2133 of the common magnetic part 213 are gathered on the common magnetic conductive plate 2132, and the magnetic field with a strong magnetic field strength generated by the common magnetic part 213 passes through the first bass magnetic gap 215 and the second bass magnetic gap 216, thereby increasing the density of the magnetic flux in the first bass magnetic gap 215 and the second bass magnetic gap 216, increasing the number of magnetic flux lines passing through the first bass voice coil 312 and the second bass voice coil 313, and increasing the magnetic field force on the first bass voice coil 312 and the second bass voice coil 313, thereby effectively improving the BL value.

[0119] It should be noted that if Figure 2 As shown, when the first central magnet 2121 is magnetized from bottom to top, the second central magnet 2123 is magnetized from top to bottom, the first common magnet 2131 is magnetized from top to bottom, the second common magnet 2133 is magnetized from bottom to top, and the side magnet 2141 is magnetized from bottom to top. That is, the N pole of the first central magnet 2121 is at the top and the S pole is at the bottom, the N pole of the second central magnet 2123 is at the bottom and the S pole is at the top, the N pole of the first common magnet 2131 is at the bottom and the S pole is at the top, the N pole of the second common magnet 2133 is at the top and the S pole is at the bottom, and the N pole of the side magnet 2141 is at the top and the S pole is at the bottom, and vice versa.

[0120] It can be understood that when the first central magnet 2121 is magnetized from bottom to top, when the second magnet 222 of the tweeter magnetic circuit portion 22 is magnetized from left to right, the first magnet 221 and the third magnet 223 are both magnetized from right to left; or, when the second magnet 222 is magnetized from left to right, the first magnet 221 is magnetized from bottom to top, and the third magnet 223 is magnetized from top to bottom, which is not limited here.

[0121] In this embodiment, if Figure 2 As shown, the magnetization direction of the side magnets 2141 of the side magnet portion 214 is the same as the magnetization direction of the first central magnet 2121, and opposite to the magnetization direction of the first common magnet 2131. Optionally, the magnetic poles of the side magnets 2141 near the side magnetic conductive plate 2142 are the same as the magnetic poles of the first central magnet 2121 near the central magnetic conductive plate 2122, and the magnetic poles of the side magnets 2141 near the side magnetic conductive plate 2142 are opposite to the magnetic poles of the first common magnet 2131 near the common magnetic conductive plate 2132, which is not limited here.

[0122] It can be understood that the first central magnet 2121 and the second central magnet 2123 have the same magnetic poles near the central magnetic conductive plate 2122, that is, the magnetic poles of the first central magnet 2121 and the second central magnet 2123 near the central magnetic conductive plate 2122 are both north poles or south poles. The first common magnet 2131 and the second common magnet 2133 have the same magnetic poles near the common magnetic conductive plate 2132, that is, the magnetic poles of the first common magnet 2131 and the second common magnet 2133 near the common magnetic conductive plate 2132 are both south poles or north poles.

[0123] Optionally, when the magnetic poles of the first central magnet 2121 and the second central magnet 2123 close to the central magnetic conductive plate 2122 are both N poles, the magnetic poles of the first common magnet 2131 and the second common magnet 2133 close to the common magnetic conductive plate 2132 are both S poles, and vice versa. Such an arrangement can enable the central magnetic portion 212 and the side magnetic portion 214 to form a magnetic circuit of the first bass voice coil 312 passing through the first bass magnetic gap 215 and the second bass magnetic gap 216, which is not limited here.

[0124] In one embodiment, the first center magnet 2121 includes multiple first center magnets 2121, which are arranged adjacent to each other and located between the central magnetic plate 2122 and the first magnetic yoke 2111 of the magnetic yoke 211; wherein the multiple first center magnets 2121 are all magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3, and the magnetization directions of the multiple first center magnets 2121 are the same.

[0125] Optionally, multiple first central magnets 2121 are arranged flat between the first magnetic yoke 2111 of the magnetic yoke 211 and the central magnetic plate 2122. The multiple first central magnets 2121 are magnetized vertically, and the magnetization directions of the multiple first central magnets 2121 are the same. That is, the multiple first central magnets 2121 are magnetized in the direction of movement of the first woofer voice coil 312, and the multiple first central magnets 2121 can be magnetized simultaneously upward or downward, without limitation.

[0126] In one embodiment, the second central magnet 2123 includes a plurality of second central magnets 2123, which are arranged adjacent to each other and located on the side of the central magnetic conductive plate 2122 facing away from the first central magnet 2121; wherein the plurality of second central magnets 2123 are all magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3, and the magnetization directions of the plurality of second central magnets 2123 are the same.

[0127] Optionally, multiple second central magnets 2123 are arranged flat on the side of the central magnetic conductive plate 2122 facing away from the first central magnet 2121. The multiple second central magnets 2123 are all magnetized vertically, and the magnetization direction of the multiple second central magnets 2123 is the same. That is, the multiple second central magnets 2123 are all magnetized in the direction of movement of the first woofer voice coil 312, and the multiple second central magnets 2123 can be magnetized simultaneously upward or downward, without limitation.

[0128] In one embodiment, the first common magnet 2131 includes a plurality of first common magnets 2131, which are arranged adjacent to each other and located between the common magnetic plate 2132 and the first magnetic yoke 2111 of the magnetic yoke 211; wherein the plurality of first common magnets 2131 are all magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3, and the magnetization directions of the plurality of first common magnets 2131 are the same.

[0129] Optionally, multiple first shared magnets 2131 are arranged flat between the first magnetic yoke 2111 of the magnetic yoke 211 and the shared magnetic plate 2132. The multiple first shared magnets 2131 are magnetized vertically, and the magnetization directions of the multiple first shared magnets 2131 are the same. That is, the multiple first shared magnets 2131 are magnetized in the direction of movement of the first bass voice coil 312, and the multiple first shared magnets 2131 can be magnetized simultaneously upward or downward, without limitation.

[0130] In one embodiment, the second common magnet 2133 includes a plurality of second common magnets 2133, which are arranged adjacent to each other and located on the side of the common magnetic conductive plate 2132 facing away from the first common magnet 2131; wherein the plurality of second common magnets 2133 are all magnetized along the vibration direction of the bass diaphragm 311 in the vibration system 3, and the magnetization directions of the plurality of second common magnets 2133 are the same.

[0131] Optionally, multiple second shared magnets 2133 are arranged flat on the side of the shared magnetic plate 2132 facing away from the first shared magnet 2131. The multiple second shared magnets 2133 are all magnetized vertically, and the magnetization direction of the multiple second shared magnets 2133 is the same. That is, the multiple second shared magnets 2133 are all magnetized in the direction of movement of the first bass voice coil 312, and the multiple second shared magnets 2133 are magnetized simultaneously upward or downward, without limitation.

[0132] In one embodiment, the bass diaphragm 311 includes an inner ring portion 3111, a first fold ring 3113 arranged around the inner ring portion 3111, a straight portion 3114 arranged around the first fold ring 3113, a second fold ring 3115 arranged around the straight portion 3114, and a fixing portion 3116 connected to the outer side of the second fold ring 3115, the fixing portion 3116 is connected to the outer shell 1, the inner ring portion 3111 forms an inner ring hole 3112, and the inner ring portion 3111 is connected to the periphery of the second magnetic yoke 2112.

[0133] In this embodiment, if Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, the inner ring portion 3111 , the first fold ring 3113 , the straight portion 3114 , the second fold ring 3115 and the fixing portion 3116 of the bass diaphragm 311 may be an integrally formed structure, thereby ensuring the vibration performance and structural strength of the bass diaphragm 311 .

[0134] In this embodiment, the top surface height of the edge magnetic portion 24 is lower than the top surface height of the common magnetic portion 23, the protruding direction of the first fold ring 313 of the diaphragm 31 is toward the direction away from the magnetic circuit system 2, and the protruding direction of the second fold ring 315 is opposite to the protruding direction of the first fold ring 313. The first fold ring 313 is at least partially opposite to the second bass magnetic gap 216, and the second fold ring 315 is at least partially opposite to the edge magnetic portion 24. The protruding direction of the first fold ring 313 is toward the direction away from the magnetic circuit system 2, and the first fold ring 313 is at least partially opposite to the second bass magnetic gap 216, thereby avoiding interference between the first fold ring 313 and the second yoke 212 and the common magnetic part 23; at the same time, the top surface height of the edge magnetic part 24 is lower than the top surface height of the common magnetic part 23, and the protruding direction of the second fold ring 315 is opposite to the protruding direction of the first fold ring 313, and the second fold ring 315 is at least partially opposite to the edge magnetic part 24. When the sound-emitting device 100 is installed on a sound module or electronic equipment, the sound output area of ​​the front cavity can be increased, which facilitates the smooth transmission of sound waves from the diaphragm 31 and improves the sound quality of the sound-emitting device 100.

[0135] In one embodiment, the bass diaphragm 311 further includes a reinforcement portion disposed on the straight portion 3114. As will be appreciated, the reinforcement portion effectively strengthens the structural strength of the bass diaphragm 311, thereby improving the connection stability between the first bass voice coil 312 and the second bass voice coil 313 and preventing the bass diaphragm 311 from tearing when the first bass voice coil 312 and the second bass voice coil 313 drive the bass diaphragm 311 to vibrate.

[0136] In one embodiment, a avoidance structure 2134 is provided on the periphery of the second common magnet 2133 adjacent to the second bass magnetic gap 216 .

[0137] In this embodiment, if Figure 2 、 Figure 3 and Figure 6 As shown, by setting an avoidance structure 2134 on the edge of the second common magnet 2133 of the common magnetic part 213, that is, setting a rounded corner, a chamfered corner, a cut corner or a step structure on the edge of the second common magnet 2133, the bass diaphragm 311 can be avoided, and at the same time, magnetic leakage can be effectively prevented to improve the BL value.

[0138] Optionally, the avoidance structure 2134 is at least one of an inclined surface, a rounded corner, a chamfer, and a step structure.

[0139] In one embodiment, the avoidance structure 2134 may be an inclined surface. Optionally, the angle formed between the avoidance structure 2134 and the surface of the second common magnet 2133 facing away from the common magnetic conductive plate 2132 is greater than 90° and less than 180°. In this embodiment, the angle formed between the inclined surface of the avoidance structure 2134 and the surface of the second common magnet 2133 facing away from the common magnetic conductive plate 2132 may further be in the range of 100° to 150°, which is not limited here. Optionally, the angle is 100°, 110°, 120°, 130°, 140°, 150°, etc., which is not limited here.

[0140] It is understood that the avoidance structure 2134 surrounds the circumference of the second common magnet 2133 on the side facing away from the common magnetic conductive plate 2132, that is, the avoidance structure 2134 is a single annular inclined surface. Of course, in other embodiments, the avoidance structure 2134 includes multiple avoidance structures 2134, and the multiple avoidance structures 2134 are spaced apart and surround the circumference of the second common magnet 2133 on the side facing away from the common magnetic conductive plate 2132. In this case, two adjacent avoidance structures 2134 are not connected and also have a certain distance between them. Alternatively, the avoidance structure 2134 includes multiple adjacent avoidance structures 2134, and the adjacent avoidance structures 2134 are connected end to end to form a closed annular structure, and surround the circumference of the second common magnet 2133 on the side facing away from the common magnetic conductive plate 2132. In this case, adjacent avoidance structures 2134 in the multiple avoidance structures 2134 are adjacent and form an annular structure. Optionally, the angles formed by the multiple avoidance structures 2134 and the surface of the second common magnet 2133 facing away from the common magnetic conductive plate 2132 can be the same, different, or at least partially the same, which is not limited here.

[0141] In one embodiment, the second magnetic yoke 2112 includes a protrusion 2113 and an edge portion 2114 connected to the protrusion 2113, the inner ring portion 3111 is connected to the edge portion 2114 so that the protrusion 2113 passes through the inner ring hole 3112, and the protrusion 2113 forms a recessed groove 2115 facing the central magnetic portion 212. The second central magnet 2123 has a protrusion 2124 protruding from the second common magnet 2133, and the protrusion 2124 is accommodated and confined in the recessed groove 2115.

[0142] In this embodiment, if Figures 1 to 3 、 Figure 5 As shown, by setting the second magnetic yoke 2112 as a protrusion 2113 passing through the inner ring hole 3112, and setting an edge portion 2114 on the periphery of the protrusion 2113, it is convenient to connect the inner ring portion 3111 of the bass diaphragm 311 with the edge portion 2114 to achieve sealing. It can be understood that when the sound-emitting device 100 is applied to an electronic device, in order to reduce the Z-direction height of the electronic device, the protrusion 2113 of the sound-emitting device 100 can be used to abut against the inner wall of the shell of the electronic device. There is no need to increase the front cavity space. The front sound cavity structure can be formed by utilizing the height difference between the protrusion 2113 and the bass diaphragm 311 in the vibration system 3, which is not limited here.

[0143] It can be understood that by providing a recessed groove 2115 in the raised portion 2113 of the second magnetic yoke 2112, a portion of the second central magnet 2123 is accommodated and confined within the recessed groove 2115. In other words, the second central magnet 2123 has a protruding portion 2124 that protrudes from the second common magnet 2133, and the protruding portion 2124 is accommodated and confined within the recessed groove 2115. This allows the second central magnet 2123 of the central magnetic portion 212 to support and secure the second magnetic yoke 2112, while also increasing the thickness of the second central magnet 2123, thereby further enhancing the magnetic field strength of the central magnetic portion 212.

[0144] In one embodiment, the common magnetic portion 213 is provided with an avoidance gap 2135 connecting the first bass magnetic gap 215 and the second bass magnetic gap 216; the bass vibration unit 31 also includes a skeleton 314, the skeleton 314 includes a main body 3141 and a connecting portion 3142 connected to the main body 3141, the main body 3141 is connected to the bass diaphragm 311, the connecting portion 3142 is located in the avoidance gap 2135, and the two ends of the connecting portion 3142 are respectively connected to the first bass voice coil 312 and the second bass voice coil 313.

[0145] In this embodiment, if Figures 3 to 5 、 Figure 7 As shown, by providing the skeleton 314, the first bass voice coil 312 and the second bass voice coil 313 are connected to the bass diaphragm 311 through the skeleton 314. This ensures that the first bass voice coil 312 and the second bass voice coil 313 are in a more reasonable magnetic field, that is, the area with the largest magnetic flux density, thereby effectively improving the BL value.

[0146] In one embodiment, the skeleton 314 includes a main body 3141 and a connecting portion 3142. The main body 3141 is connected to the bass diaphragm 311. The connecting portion 3142 is located in the avoidance gap 2135 so that the two ends of the connecting portion 3142 are respectively connected to the first bass voice coil 312 and the second bass voice coil 313.

[0147] It can be understood that when there is only one skeleton 314, optionally, the main body 3141 is arranged in a rectangular ring, and the connecting parts 3142 include multiple, and the multiple connecting parts 3142 are respectively arranged corresponding to the four corners of the main body 3141, and the common magnetic part 213 is provided with an avoidance gap 2135 corresponding to each connecting part 3142.

[0148] In this embodiment, the main body 3141 of the skeleton 314 is connected to the straight portion 3114 of the bass diaphragm 311, with multiple connecting portions 3142 spaced apart. Optionally, the multiple connecting portions 3142 are disposed at the four corners of the main body 3141. The shared magnetic portion 213 is provided with a clearance notch 2135 corresponding to each connecting portion 3142, such that each connecting portion 3142 is located within a clearance notch 2135. Optionally, the four corners of the shared magnetic portion 213 are each provided with a clearance notch 2135.

[0149] Of course, the skeleton 314 may also include multiple skeletons, for example, the skeleton 314 includes two or four skeletons. Optionally, the skeleton 314 includes two, and the bass diaphragm 311 has two long axis sides and two short axis sides connected end to end; the two skeletons 314 are arranged at intervals along the long axis sides or the short axis sides, and are symmetrically arranged. Each skeleton 314 includes a main body 3141 and two connecting parts 3142. Optionally, the skeleton 314 includes four, and the four skeletons 314 are respectively arranged corresponding to the four corners of the common magnetic part 213. Each skeleton 314 includes a main body 3141 and a connecting part 3142.

[0150] In this embodiment, the side magnetic portions 214 and the common magnetic portion 213 may each be configured as a rectangular frame. Optionally, each corner of the common magnetic portion 213 is provided with an escape notch 2135. Optionally, the number of connecting portions 3142 of the skeleton 314 matches the number of escape notches 2135, and the number of such notches is arranged in a one-to-one correspondence, which is not limited herein.

[0151] In one embodiment, if Figure 3 and Figure 7 As shown, a first connecting surface 3144 and a second connecting surface 3145 are respectively provided at both ends of the connecting portion 3142 . The first connecting surface 3144 is connected to the first bass voice coil 312 , and the second connecting surface 3145 is connected to the second bass voice coil 313 .

[0152] In this embodiment, the first connecting surface 3144 is connected to the outer sidewall of the first bass voice coil 312. The first connecting surface 3144 corresponds to a corner of the first bass voice coil 312 and may optionally be a concave arc surface. The second connecting surface 3145 is connected to the inner sidewall of the second bass voice coil 313. The second connecting surface 3145 corresponds to a corner of the second bass voice coil 313 and may optionally be a convex arc surface, which is not limited herein.

[0153] In one embodiment, an escape space 113 is formed between the edge magnet portion 214 and the outer shell 1; the bass vibration unit 31 also includes a centering support piece 315, one end of the centering support piece 315 is connected to the outer shell 1, and the other end of the centering support piece 315 is located in the escape space 113; the skeleton 314 also includes an extension portion 3143, one end of the extension portion 3143 is connected to the periphery of the main body portion 3141, and the other end of the extension portion 3143 extends toward the centering support piece 315 and is connected to the centering support piece 315.

[0154] In this embodiment, if Figure 3 and Figure 4 As shown, by providing a clearance space 113 between the housing 1 and the edge magnet portion 214 and disposing a centering damper 315, the centering damper 315 is fixed to the housing 1, with one end of the centering damper 315 extending into the clearance space 113. By providing an extension portion 3143 on the frame 314, the extension portion 3143 extends toward and connects to the centering damper 315. Thus, the lead wires of the first and second woofer voice coils 312 and 313 are guided through the frame 314 to the centering damper 315, then to the housing 1 via the centering damper 315, where they are connected to the external circuit. The frame 314 not only connects and secures the first and second woofer voice coils 312 and 313, but also prevents the first and second woofer voice coils 312 and 313 from swinging or polarizing during vibration.

[0155] It can be understood that by providing the centering support 315, the centering support 315 can be used to connect the leads of the first bass voice coil 312 and the second bass voice coil 313 to the external circuit, and the centering support 315 can also be used to avoid problems such as swinging or polarization of the first bass voice coil 312 and the second bass voice coil 313 during vibration.

[0156] In one embodiment, the housing 1 has two long sides 111 and two short sides 112 connected end to end, and the centering support plates 315 include two. The two centering support plates 315 are symmetrically arranged and respectively correspond to the two short sides 112. The tweeter magnetic circuit part 22 and the tweeter vibration unit 32 are arranged corresponding to the long side 111.

[0157] In this embodiment, if Figure 1 、 Figure 3 and Figure 4 As shown, two centering supports 315 are symmetrically arranged along the two long sides 111 or the two short sides 112 of the housing 1. Each centering support 315 includes an outer fixing portion, an elastic wall portion, and an inner fixing portion, which are connected in sequence. The outer fixing portion is connected to the housing 1 and / or the edge magnetic portion 214, and the inner fixing portion is connected to the extension portion 3143. The inner fixing portion is provided with an inner soldering pad. The leads of the first woofer voice coil 312 and the second woofer voice coil 313 extend along the extension portion 3143 to the inner soldering pad.

[0158] Optionally, two centering supports 315 are symmetrically distributed along the two short sides 112 of the housing 1, and the treble magnetic circuit portion 22 and the treble vibration unit 32 are arranged corresponding to the long sides 111. In this way, the centering supports 315 can not only connect the first woofer voice coil 312 and the second woofer voice coil 313 to the external circuit, but also serve to center the first woofer voice coil 312 and the second woofer voice coil 313. At the same time, the treble magnetic circuit portion 22 and the treble vibration unit 32 are arranged corresponding to the long sides 111, which can provide the treble vibration unit 32 with a larger vibration space, thereby improving the treble sound effect.

[0159] In this embodiment, if Figure 3 and Figure 4 As shown, the outer fixing portion, elastic wall portion, and inner fixing portion of centering support 315 can be integrally formed. This effectively ensures the structural strength of centering support 315 while simplifying the processing steps for centering support 315. It will be appreciated that to ensure the deformability of centering support 315, the elastic wall portion has at least one bend.

[0160] Optionally, the outer fixing portion, the elastic wall portion, and the inner fixing portion of the centering support 315 may be located in the same plane. Of course, in other embodiments, the outer fixing portion and the inner fixing portion of the centering support 315 may also be located in different planes.

[0161] In one embodiment, the edge magnet portion 214 forms a closed, integral ring structure. The annular edge magnet portion 214 surrounds the common magnet portion 213 and is spaced apart from the common magnet portion 213 to form an annular second low-pitched magnet gap 216. Alternatively, the edge magnet portion 214 can be in the shape of a circular ring or a rectangular ring.

[0162] Of course, the edge magnetic parts 214 include multiple, adjacent edge magnetic parts 214 are connected end to end to form a closed ring structure; or, the edge magnetic parts 214 include multiple, multiple edge magnetic parts 214 are spaced and arranged around the common magnetic part 213, and there are gaps between adjacent edge magnetic parts 214, which is not limited here.

[0163] In this embodiment, the common magnetic part 213 is arranged around the central magnetic part 212. Optionally, the common magnetic part 213 can be a closed integral annular structure, the annular common magnetic part 213 surrounds the central magnetic part 212, and is spaced from the central magnetic part 212 to form an annular first bass magnetic gap 215. Optionally, the common magnetic part 213 can be in the form of a circular ring or a rectangular ring, etc. Of course, the common magnetic part 213 includes a plurality of common magnetic parts 213, and the plurality of common magnetic parts 213 are arranged around the central magnetic part 212, and the adjacent common magnetic parts 213 are connected end to end to form a closed annular structure; or, the common magnetic part 213 includes a plurality of common magnetic parts 213, and the plurality of common magnetic parts 213 are spaced and arranged around the central magnetic part 212, and there is a gap between the adjacent common magnetic parts 213, and the gap can be an avoidance gap 2135, which is used to provide avoidance space for the skeleton 314, which is not limited here.

[0164] In one embodiment, the common magnetic portion 213 includes a plurality of common magnetic portions 213 , which are disposed around the outer side of the central magnetic portion 212 , and adjacent common magnetic portions 213 are connected end to end to form a closed ring structure.

[0165] It can be understood that each of the multiple common magnetic parts 213 includes a first common magnet 2131, a common magnetic conductive plate 2132 and a second common magnet 2133 that are stacked. At this time, adjacent first common magnets 2131 in adjacent common magnetic parts 213 are connected end to end to form a closed ring structure, adjacent common magnetic conductive plates 2132 are connected end to end to form a closed ring structure, and adjacent second common magnets 2133 are connected end to end to form a closed ring structure, so that multiple common magnetic parts 213 are connected end to end to form a closed ring structure, which is not limited here.

[0166] In one embodiment, if Figures 3 to 5 As shown, the common magnetic portion 213 includes a plurality of common magnetic portions 213 , which are disposed around the outer side of the central magnetic portion 212 , and adjacent common magnetic portions 213 are spaced apart to form gaps.

[0167] It is understood that each of the multiple shared magnetic portions 213 includes a first shared magnet 2131, a shared magnetic conductive plate 2132, and a second shared magnet 2133 that are stacked. In this case, adjacent first shared magnets 2131 in adjacent shared magnetic portions 213 are spaced apart to form a gap, adjacent shared magnetic conductive plates 2132 are spaced apart to form a gap, and adjacent second shared magnets 2133 are spaced apart to form a gap, so that the multiple shared magnetic portions 213 are spaced apart and surrounded to form a ring structure with gaps, which is not limited here. Optionally, the gaps formed by the spacing between adjacent shared magnetic portions 213 are avoidance gaps 2135.

[0168] In this embodiment, the first shared magnet 2131 and the second shared magnet 2133 of the shared magnetic portion 213 may be permanent magnets. It is understood that the first shared magnet 2131, the shared magnetic plate 2132, and the second shared magnet 2133 of the shared magnetic portion 213 are stacked along the moving direction of the first bass voice coil 312. Specifically, the first shared magnet 2131 is connected to the first magnetic yoke 2111 of the magnetic yoke 211, the second shared magnet 2133 is connected to the second magnetic yoke 2112 of the magnetic yoke 211, the shared magnetic plate 2132 is stacked between the first shared magnet 2131 and the second shared magnet 2133, and the second shared magnet 2133 is stacked on the side of the shared magnetic plate 2132 facing away from the first shared magnet 2131.

[0169] In one embodiment, at least a portion of the projection of the common magnetic conductive plate 2132 along the vibration direction perpendicular to the bass diaphragm 311 overlaps with the projections of the first bass voice coil 312 and the second bass voice coil 313 along the vibration direction perpendicular to the bass diaphragm 311 .

[0170] As can be understood, this arrangement allows the magnetic flux lines of the first common magnet 2131 and the second common magnet 2133 of the common magnetic portion 213 to converge on the common magnetic conductive plate 2132 and pass through the first bass magnetic gap 215 and the second bass magnetic gap 216, thereby increasing the density of the magnetic flux in the first bass magnetic gap 215 and the second bass magnetic gap 216. This allows the first bass voice coil 312 and the second bass voice coil 313 to be located in a more reasonable magnetic field, thereby alleviating distortion of the audio output by the sound-generating device 100 and improving the sound quality of the audio output by the sound-generating device 100. Optionally, the horizontal projection of the common magnetic conductive plate 2132 is located within the horizontal projection of the first bass voice coil 312 and the second bass voice coil 313.

[0171] Optionally, the thickness of the common magnetic conductive plate 2132 is less than or equal to the thickness of the first common magnet 2131 , and the thickness of the common magnetic conductive plate 2132 is less than or equal to the thickness of the second common magnet 2133 , which is not limited here.

[0172] In one embodiment, at least a portion of the projection of the central magnetic plate 2122 along the vibration direction perpendicular to the bass diaphragm 311 overlaps with the projection of the first bass voice coil 312 along the vibration direction perpendicular to the bass diaphragm 311 .

[0173] As can be understood, this arrangement allows the magnetic flux lines of the first central magnet 2121 and the second central magnet 2123 of the central magnetic portion 212 to converge on the central magnetic conductive plate 2122 and pass through the first woofer magnetic gap 215, thereby increasing the density of the magnetic flux in the first woofer magnetic gap 215 and placing the first woofer voice coil 312 in a more reasonable magnetic field, thereby alleviating distortion of the audio output by the sound-generating device 100 and improving the sound quality of the audio output by the sound-generating device 100. Optionally, the horizontal projection of the central magnetic conductive plate 2122 is located within the horizontal projection of the first woofer voice coil 312.

[0174] Optionally, the thickness of the central magnetic conductive plate 2122 is less than or equal to the thickness of the first central magnet 2121, and the thickness of the central magnetic conductive plate 2122 is less than or equal to the thickness of the second central magnet 2123, without limitation. In this embodiment, the thickness of the central magnetic conductive plate 2122 is optionally equivalent to the thickness of the shared magnetic conductive plate 2132.

[0175] In this embodiment, if Figure 2 As shown, the thickness of the first central magnet 2121 along the vibration direction of the bass diaphragm 311 may be the same as the thickness of the first common magnet 2131 along the vibration direction of the bass diaphragm 311. Optionally, the thickness of the central magnetic conductive plate 2122 along the vibration direction of the bass diaphragm 311 may be the same as the thickness of the side magnetic conductive plates 2142 along the vibration direction of the bass diaphragm 311.

[0176] In one embodiment, the thickness of the second central magnet 2123 along the vibration direction of the bass diaphragm 311 is greater than or equal to the thickness of the second common magnet 2133 along the vibration direction of the bass diaphragm 311. That is, the surface of the second central magnet 2123 facing away from the central magnetic plate 2122 protrudes beyond the surface of the second common magnet 2133 facing away from the common magnetic plate 2132, forming a protrusion 2124. In other words, the thickness of the central magnetic portion 22 is greater than the thickness of the common magnetic portion 23. This maximizes the size of the magnetic circuit system 2 within limited reserved space while also taking into account the vibration area of ​​the diaphragm 31, thereby ensuring the sound performance of the sound-generating device 100.

[0177] It can be understood that the bass vibration unit 31 of the vibration system 3 is provided with a through structure for the protrusion to pass through. In this way, when the sound-emitting device 100 is applied to an electronic device, in order to reduce the Z-direction height of the electronic device, the protrusion 2124 of the magnetic circuit system 2 in the sound-emitting device 100 can be used to abut against the inner wall of the shell of the electronic device. There is no need to increase the front cavity space. The front sound cavity structure can be formed by utilizing the height difference between the protrusion 2124 of the magnetic circuit system 2 and the bass vibration unit 31 of the vibration system 3, which is not limited here.

[0178] Of course, in other implementations, the thickness of the second central magnet 2123 along the direction of movement of the first bass voice coil 312 may be the same as the thickness of the second common magnet 2133 along the direction of movement of the first bass voice coil 312. The bass diaphragm 311 of the bass vibration unit 31 and the central magnetic portion 212 are disposed opposite and spaced apart from each other; or, the bass diaphragm 311 of the bass vibration unit 31 and the central magnetic portion 212 are connected and sealed, which is not limited here.

[0179] In one embodiment, the dimension of the sound-generating device 100 along the vibration direction of the bass vibration unit 31 is smaller than the dimension of the sound-generating device 100 along the vibration direction of the treble vibration unit 32. It is understood that this configuration allows the sound-generating device 100 to have a flat structure, which facilitates a thin design of the application end when adapted to the application end, thereby improving the user experience.

[0180] In one embodiment, the sound-emitting device 100 is installed in the shell 400 of the sound-emitting module 500, and forms a mutually isolated bass front cavity 421, treble front cavity 422 and rear cavity 430 between the shell 400. The shell 400 is provided with a bass sound outlet 411 connected to the bass front cavity 421 and a treble sound outlet 412 connected to the treble front cavity 422. The sound waves of the bass diaphragm 311 are radiated to the outside through the bass sound outlet 411, and the sound waves of the treble radiation surface 323 are radiated to the outside through the treble sound outlet 412; wherein, the volume of the rear cavity 430 is ≤1.5cc.

[0181] In this embodiment, if Figures 8 to 11 As shown, the housing 400 of the sound module 500 has an installation space, and the sound device 100 is disposed in the installation space of the housing 400, and forms a front cavity and a rear cavity 430 separated from the housing 400. It can be understood that in order to avoid interference between the sound of the bass vibration unit 31 and the sound of the treble vibration unit 32 of the sound device 100, the front cavity formed by the sound device 100 and the housing 400 includes a bass front cavity 421 and a treble front cavity 422.

[0182] In one embodiment, if Figures 9 to 11 As shown, the housing 400 is further provided with a treble sound guide 413, which is arranged corresponding to the treble vibration unit 32 of the sound-generating device 100 and encloses a treble front cavity 422. It can be understood that the woofer vibration unit 31 of the sound-generating device 100 and the housing 400 enclose a woofer front cavity 421.

[0183] In order to facilitate the smooth transmission of the sounds generated by the bass diaphragm 311 and the tweeter diaphragm 321 of the sound-emitting device 100 to the outside world, the shell 400 is provided with a bass sound outlet 411 connected to the bass front cavity 421 and a tweeter sound outlet 412 connected to the tweeter front cavity 422, so that the sound waves of the bass diaphragm 311 are radiated to the outside world through the bass sound outlet 411, and the sound waves of the tweeter diaphragm 321 are radiated to the outside world through the tweeter sound outlet 412.

[0184] It is understandable that the bass sound outlet 411 and the treble sound outlet 412 can be arranged on different sides of the housing 400 to achieve different sound effects. Figure 8 and Figure 9 As shown, the bass sound hole 411 and the treble sound hole 412 are optionally located on the same side of the housing 400 and are spaced apart. Optionally, the bass sound hole 411 includes multiple bass sound holes 411, which are located on opposite sides or around the treble sound hole 412, which is not limited here.

[0185] It is understood that in order to balance the air pressure within the sound-generating device 100, the sound-generating device 100 is also provided with a pressure relief hole. Thus, when the bass diaphragm 311 vibrates, the sound waves on the side of the bass diaphragm 311 facing away from the bass front cavity 421 are radiated through the pressure relief hole to the rear cavity 430, thereby balancing the air pressure on both sides of the bass diaphragm 311. Optionally, the pressure relief hole is provided on the housing 1 of the sound-generating device 100; alternatively, the pressure relief hole is provided on the magnetic yoke 211 of the magnetic circuit system 2 of the sound-generating device 100, without limitation. In this embodiment, the pressure relief hole is optionally provided on the first magnetic yoke 2111 of the magnetic yoke 211 of the magnetic circuit system 2.

[0186] Of course, in order to balance the air pressure on the two opposite sides of the tweeter diaphragm 321 of the sound-emitting device 100, the sound-emitting device 100 is also provided with a pressure relief hole, which connects the rear cavity 430 with the space between the tweeter magnetic circuit part 22 and the tweeter vibration unit 32. In this way, when the tweeter diaphragm 321 vibrates, the sound waves on the side of the tweeter diaphragm 321 facing away from the tweeter front cavity 422 are radiated to the rear cavity 430 through the pressure relief hole, thereby balancing the air pressure on both sides of the tweeter diaphragm 321.

[0187] In this embodiment, the sound device 100 is installed in the housing 400 of the sound module 500, and the volume of the rear cavity 430 is optionally less than or equal to 1.5cc. Optionally, the volume of the rear cavity 430 is 1.5cc, 1.4cc, 1.3cc, 1.2cc, 1.1cc, 1cc, 0.9cc, 0.8cc, 0.7cc, 0.6cc, 0.5cc, 0.4cc, 0.3cc, 0.2cc, 0.1cc, etc., without limitation herein.

[0188] It can be understood that by setting the magnetic circuit system 2 of the sound-generating device 100 to a bass magnetic circuit part 21 and a treble magnetic circuit part 22, and setting the bass magnetic circuit part 21 to a magnetic yoke 211 and a central magnetic part 212, a common magnetic part 213 and a side magnetic part 214 provided on the magnetic yoke, the central magnetic part 212 and the side magnetic part 214 share the common magnetic part 213, respectively forming a first bass magnetic gap 215 and a second bass magnetic gap 216, and setting the bass vibration unit 31 of the vibration system 3 to an inner and outer double voice coil structure, so that the first bass voice coil 312 is set corresponding to the first bass magnetic gap 215, and the second bass magnetic gap 216 is formed. The coil 313 is arranged corresponding to the second bass magnetic gap 216, so that current is passed through the first bass voice coil 312 and the second bass voice coil 313, so that the two voice coils vibrate in the magnetic fields of the first bass magnetic gap 215 and the second bass magnetic gap 216 formed by the bass magnetic circuit part 21 respectively, and drive the bass diaphragm 311 to vibrate and make sound, so as to improve the BL value. At the same time, the first bass voice coil 312 and the second bass voice coil 313 can make full use of the magnetic fields of the central magnetic part 212 and the common magnetic part 213, improve the magnetic energy utilization rate of the magnetic circuit system 2, thereby improving the loudness and sensitivity of the sound-emitting device 100, so as to improve product performance.

[0189] The present invention also provides an electronic device including the aforementioned sound-generating device 100. The specific structure of the sound-generating device 100 is similar to that of the aforementioned embodiments. Since the present electronic device utilizes all the technical solutions of all the aforementioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and thus will not be described in detail here.

[0190] In one embodiment, the electronic device further comprises a device housing having an installation space, and the sound generating device 100 is disposed in the installation space of the device housing. Of course, in other embodiments, the electronic device may comprise a sound generating module 500, which is not limited here.

[0191] In this embodiment, the electronic device further includes a flexible circuit board (FPCB), one end of which is electrically connected to the sound-generating device 100, and the other end of which is used to connect to an external power source. As will be appreciated, the FPCB is used to electrically connect the external circuit to the first woofer voice coil 312, the second woofer voice coil 313, and the tweeter voice coil 322 of the sound-generating device 100. The FPCB has inner and outer solder pads. The inner pads are electrically connected to the sound-generating device 100, while the outer pads are used to connect to external terminals.

[0192] In this embodiment, the device housing has an installation space, the sound-generating device 100 is disposed within the installation space of the device housing, and at least one end of the flexible printed circuit board connected to the sound-generating device 100 is located within the installation space of the device housing. Of course, in other embodiments, the entire flexible printed circuit board may be disposed within the installation space of the device housing, and this is not limited here.

[0193] It is understood that the electronic device can be a headset, a mobile phone, an MP3, an MP4, a computer, a tablet computer, a smart wearable device, etc., and is not limited here. In the electronic device, the sound device 100 can be assembled into the housing of the electronic device in a module or in a single unit.

[0194] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-generating device, characterized in that: The sound-generating device comprises: shell; a magnetic circuit system connected to the housing, the magnetic circuit system comprising a bass magnetic circuit portion and a treble magnetic circuit portion, the bass magnetic circuit portion having a first bass magnetic gap and a second bass magnetic gap, the treble magnetic circuit portion being located outside the bass magnetic circuit portion; and a vibration system comprising a bass vibration unit and a treble vibration unit, the bass vibration unit comprising a bass diaphragm and a first bass voice coil and a second bass voice coil connected to the bass diaphragm, the first bass voice coil being arranged corresponding to the first bass magnetic gap, and the second bass voice coil being arranged corresponding to the second bass magnetic gap; the treble vibration unit being connected to the housing and being arranged opposite to and spaced apart from the treble magnetic circuit portion; The bass vibration unit has a bass radiation surface, the treble vibration unit has a treble radiation surface, and the bass radiation surface and the treble radiation surface are arranged at an angle.

2. The sound-generating device according to claim 1, wherein: The housing includes a frame body and a mounting side wall, wherein the mounting side wall is provided on one side of the frame body and encloses an installation space with the outer wall of the frame body, and the mounting side wall is provided with a mounting hole communicating with the installation space; The periphery of the bass diaphragm is connected to one end of the frame body, the bass magnetic circuit part and the treble magnetic circuit part are arranged in the installation space, the treble magnetic circuit part is arranged corresponding to the installation hole, and the treble vibration unit is connected to the installation side wall and covers the installation hole.

3. The sound-generating device according to claim 2, wherein: The tweeter magnetic circuit comprises a first magnet, a second magnet, and a third magnet disposed in the mounting space. The first magnet, the second magnet, and the third magnet are stacked in a direction parallel to the tweeter radiation surface. The first magnet is away from the woofer diaphragm, and the third magnet is connected to the frame body. The tweeter vibration unit includes a tweeter diaphragm and a tweeter voice coil connected to the tweeter diaphragm. The tweeter diaphragm is connected to the mounting side wall and covers the mounting hole. The tweeter voice coil is located in the mounting hole and is opposite to and spaced apart from the tweeter magnetic circuit part.

4. The sound-generating device according to claim 3, wherein: The first magnet, the second magnet, and the third magnet are all magnetized in a direction perpendicular to the tweeter radiation surface, and the magnetization direction of the second magnet is opposite to the magnetization direction of the first magnet and the third magnet; Alternatively, the second magnet is magnetized in a direction perpendicular to the tweeter radiation surface, and the first magnet and the third magnet are magnetized in a direction parallel to the tweeter radiation surface, and the magnetization direction of the first magnet is opposite to that of the third magnet, and the magnetic pole of the first magnet on the side close to the second magnet is the same as the magnetic pole of the second magnet on the side close to the tweeter radiation surface; And / or, the tweeter diaphragm is a planar diaphragm, and the material of the planar diaphragm is any one of PEN, LCP, PEEK, carbon paper, and magnesium-lithium alloy; And / or, the tweeter voice coil is fixed to a side of the tweeter diaphragm facing the tweeter magnetic circuit portion, the tweeter voice coil is a flat voice coil formed by winding enameled wire, and the central axis of the flat voice coil is perpendicular to the tweeter radiation surface; or, the tweeter voice coil includes a coil structure formed by a circuit board and a conductive circuit arranged on the circuit board; And / or, the tweeter diaphragm is a planar diaphragm, and a reinforcement portion is provided in the central area of ​​the tweeter diaphragm.

5. The sound-generating device according to claim 1, wherein: The bass magnetic circuit portion includes a magnetic yoke and a central magnetic portion, a common magnetic portion and a side magnetic portion arranged on the magnetic yoke. The common magnetic portion is located on the outside of the central magnetic portion and is spaced from the central magnetic portion to form a first bass magnetic gap. The side magnetic portion is located on the outside of the common magnetic portion and is spaced from the common magnetic portion to form a second bass magnetic gap. The treble magnetic circuit portion is located on the outside of the side magnetic portion.

6. The sound-generating device according to claim 5, wherein: The central magnetic part includes a first central magnet, a central magnetic plate, and a second central magnet arranged in a stacked manner; the common magnetic part includes a first common magnet, a common magnetic plate, and a second common magnet arranged in a stacked manner; the side magnetic part includes a side magnet and a side magnetic plate arranged in a stacked manner; and the side magnetic plate is connected to the housing; Wherein, the first central magnet, the central magnetic conductive plate and the second central magnet respectively correspond to the first common magnet, the common magnetic conductive plate and the second common magnet in a direction parallel to the bass radiating surface; An inner ring hole is provided in the center of the bass diaphragm, the outer periphery of the bass diaphragm is connected to the outer shell, the inner periphery of the bass diaphragm is connected to the bass magnetic circuit part, and the top surface height of the diaphragm is lower than the top surface height of the bass magnetic circuit part.

7. The sound-generating device according to claim 6, wherein: The first central magnet and the second central magnet are both magnetized along the vibration direction of the bass diaphragm, and the magnetic poles of the first central magnet and the second central magnet close to the central magnetic conductive plate are the same; The first common magnet and the second common magnet are both magnetized along the vibration direction of the bass diaphragm, and the magnetic poles of the first common magnet and the second common magnet close to the common magnetic conductive plate are the same, and the side magnets are magnetized along the vibration direction of the bass diaphragm; The magnetic poles of the first central magnet and the second central magnet close to the central magnetic conductive plate are opposite to the magnetic poles of the first common magnet and the second common magnet close to the common magnetic conductive plate; The magnetic poles of the side magnets close to the side magnetic conductive plates are the same as the magnetic poles of the first central magnet close to the central magnetic conductive plates, and the magnetic poles of the side magnets close to the side magnetic conductive plates are opposite to the magnetic poles of the first common magnet close to the common magnetic conductive plates.

8. The sound-generating device according to claim 6, wherein: The magnetically conductive yoke includes a first magnetic yoke and a second magnetic yoke, the first central magnet, the first common magnet and the side magnets are connected to the first magnetic yoke, and the second central magnet and the second common magnet are connected to the second magnetic yoke; The inner periphery of the bass diaphragm is connected to the second magnetic yoke so that a portion of the second magnetic yoke corresponds to the inner annular hole.

9. The sound-generating device according to claim 8, wherein: The bass diaphragm includes an inner ring portion, a first fold ring arranged around the inner ring portion, a straight portion arranged around the first fold ring, a second fold ring arranged around the straight portion, and a fixing portion connected to the outer side of the second fold ring, the fixing portion is connected to the outer shell, the inner ring portion forms the inner ring hole, and the inner ring portion is connected to the periphery of the second magnetic yoke.

10. The sound-generating device according to claim 9, wherein: The inner ring portion, the first fold ring, the straight portion, the second fold ring and the fixing portion are an integrally formed structure; And / or, the top surface height of the edge magnetic portion is lower than the top surface height of the common magnetic portion, the protrusion direction of the first fold is toward a direction away from the magnetic circuit system, the protrusion direction of the second fold is opposite to the protrusion direction of the first fold, the first fold is at least partially opposite to the second bass magnetic gap, and the second fold is at least partially opposite to the edge magnetic portion; And / or, a avoidance structure is provided on the periphery of the second common magnet adjacent to the second bass magnetic gap; And / or, the second magnetic yoke includes a protrusion and an edge portion connected to the protrusion, the inner ring portion is connected to the edge portion so that the protrusion passes through the inner ring hole, the protrusion forms a recessed groove facing the central magnetic portion, and the second central magnet has a protrusion protruding from the second common magnet, and the protrusion is accommodated and confined in the recessed groove.

11. The sound generating device according to any one of claims 6 to 10, characterized in that: The common magnetic portion is provided with an avoidance gap connecting the first bass magnetic gap and the second bass magnetic gap; The bass vibration unit also includes a skeleton, which includes a main body and a connecting part connected to the main body. The main body is connected to the bass diaphragm, and the connecting part is located in the avoidance gap. The two ends of the connecting part are respectively connected to the first bass voice coil and the second bass voice coil.

12. The sound generating device according to claim 11, wherein: An escape space is formed between the edge magnetic portion and the shell; The bass vibration unit further includes a centering support plate, one end of which is connected to the housing, and the other end of which is located in the avoidance space; The skeleton further includes an extension portion, one end of which is connected to the periphery of the main body portion, and the other end of which extends toward the centering support piece and is connected to the centering support piece.

13. The sound generating device according to claim 12, wherein: The main body is arranged in a rectangular ring, the connecting parts include a plurality of connecting parts, the plurality of connecting parts are respectively arranged corresponding to the four corners of the main body, and the common magnetic part is provided with an avoidance notch corresponding to each of the connecting parts; And / or, a first connecting surface and a second connecting surface are respectively provided at both ends of the connecting portion, the first connecting surface is connected to the first woofer voice coil, and the second connecting surface is connected to the second woofer voice coil; And / or, the shell has two long sides and two short sides connected end to end, the centering supports include two, the two centering supports are symmetrically arranged and respectively correspond to the two short sides, and the tweeter magnetic circuit part and the tweeter vibration unit are arranged corresponding to the long sides.

14. The sound generating device according to any one of claims 1 to 10, characterized in that: The size of the sound generating device along the vibration direction of the bass vibration unit is smaller than the size of the sound generating device along the vibration direction of the treble vibration unit.

15. The sound generating device according to any one of claims 1 to 10, characterized in that: The sound-generating device is installed in the housing of the sound-generating module and forms a mutually isolated bass front cavity, treble front cavity and rear cavity with the housing. The housing is provided with a bass sound outlet hole connected to the bass front cavity and a treble sound outlet hole connected to the treble front cavity. The sound waves of the bass diaphragm are radiated to the outside through the bass sound outlet hole, and the sound waves of the treble radiation surface are radiated to the outside through the treble sound outlet hole. Wherein, the volume of the rear cavity is ≤1.5cc.

16. An electronic device, characterized in that: The electronic device includes the sound emitting device according to any one of claims 1 to 15.

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