Vibration sound production device and electronic equipment

Abstract

The invention discloses a vibration sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a side plate part of a magnetic conductive yoke of a sound production unit in the vibration sound production device comprises a first side plate and a second side plate which are arranged on two opposite sides in a second direction, and the two opposite ends of the first side plate and the second side plate are respectively spaced to form avoiding gaps; the two centering support chips of the first vibration system are arranged corresponding to the two avoiding gaps respectively, the two ends of each centering support chip are connected with the voice coil and the shell respectively, and the vibration unit comprises a vibrator assembly suspended on the periphery of the sound production unit and stator assemblies located on the two opposite sides of the sound production unit. The at least two driving coils of the stator assembly are located on the two sides of the sound production unit in the second direction. According to the vibration sound production device, the sound production unit and the vibration unit are integrated, stacking arrangement is not needed, the functions are mutually independent and do not interfere with each other, and the thickness of the vibration sound production device is reduced while the performance requirements of the sound production unit and the vibration unit are met.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic transduction technology, and in particular to a vibration-generating device and an electronic device using the vibration-generating device. Background Technology

[0002] With the development of electronic technology, portable consumer electronic devices, such as smartphones, handheld game consoles, and tablets, are becoming increasingly popular. These electronic devices typically interact with users through sound playback and / or vibration feedback.

[0003] In existing technologies, sound playback and vibration feedback in electronic devices are achieved through speakers and motors, respectively, with the speakers and motors being independent components. The more components there are, the more difficult it is to assemble the electronic device, and the more internal space it requires.

[0004] In related technologies, a vibration-generating device combining sound generation and vibration feedback functions has been proposed. In this device, the sound-generating unit and the vibration unit are stacked and share a common magnetic circuit system. However, this stacking structure increases the thickness of the device, failing to meet the requirements for a thinner and lighter design. Furthermore, the shared magnetic circuit between the sound-generating and vibration units will affect the sound generation effect and the vibration feedback effect of the vibration unit, respectively, thus impacting both the overall sound generation and vibration feedback performance of the device. Summary of the Invention

[0005] The main objective of this invention is to provide a vibration-generating sound device and an electronic device. The invention aims to provide a vibration-generating sound device that integrates a sound-generating unit and a vibration unit into one unit. This vibration-generating sound device makes reasonable use of space to arrange the sound-generating unit and the vibration unit, so that the sound-generating unit and the vibration unit do not need to be stacked and their functions are independent and do not interfere with each other. This can ensure the sound generation effect and vibration feedback effect of the vibration-generating sound device, while reducing the thickness of the vibration-generating sound device to meet the requirements of lightweight and thin design of products.

[0006] To achieve the above objectives, the present invention provides a vibration-generating sound device, the vibration-generating sound device comprising: case; A sound-generating unit is disposed in the housing. The sound-generating unit includes a first vibration system vibrating along a first direction and a first magnetic circuit system disposed opposite to the first vibration system along the first direction. The first magnetic circuit system includes a magnetic yoke and a central magnetic part. The magnetic yoke includes a base plate and a side plate extending along the first direction toward the first vibration system. The central magnetic part is disposed on the base plate and spaced apart from the side plate to form a magnetic gap. The side plate includes a first side plate and a second side plate located on opposite sides of the central magnetic part along a second direction. The opposite ends of the first side plate and the second side plate are respectively spaced apart to form clearance gaps. The first vibration system includes a diaphragm assembly, a voice coil, and two centering supports. The voice coil is connected to the diaphragm assembly and is disposed corresponding to the magnetic gap. The two centering supports are respectively disposed corresponding to the two clearance gaps. One end of each centering support passes through the clearance gap and is connected to the voice coil. The other end of each centering support is connected to the housing. A vibration unit is disposed within the housing. The vibration unit includes an oscillator assembly suspended around the periphery of the sound-generating unit and stator assemblies located on opposite sides of the sound-generating unit. The stator assembly includes at least two drive coils disposed in the housing. The at least two drive coils are respectively located on both sides of the sound-generating unit along a second direction. The stator assembly drives the oscillator assembly to vibrate along the second direction. The first direction is perpendicular to the second direction. Wherein, the projections of the first magnetic circuit system and the vibration unit along the first direction are both located within the projection range of the diaphragm assembly along the first direction.

[0007] In one embodiment, the housing forms an accommodating space with an opening, the first magnetic circuit system and the vibration unit are both disposed within the accommodating space, and the outer periphery of the diaphragm assembly is connected to the housing to cover the opening; The vibration sound-generating device is also provided with a through hole that connects to the accommodating space, and the through hole sequentially passes through the central magnetic part, the bottom plate part and the shell.

[0008] In one embodiment, the central magnetic part includes a first central magnet, a central magnetic plate, and a second central magnet stacked sequentially along the first direction, wherein the first central magnet is connected to the base plate. The first central magnet and the second central magnet are both magnetized along the first direction but in opposite directions.

[0009] In one embodiment, the central magnetic part is cylindrical, and the first side plate and the second side plate are both semi-circular arc-shaped and symmetrically arranged.

[0010] In one embodiment, the housing includes a bottom and a side portion disposed around the periphery of the bottom, the bottom and the side portion enclosing an accommodating space with an opening, the first magnetic circuit system being disposed on the bottom and located within the accommodating space, the outer periphery of the diaphragm assembly being connected to the end of the side portion away from the bottom and covering the opening, two drive coils being spaced apart on the bottom and respectively located on both sides of the first magnetic circuit system along the second direction, and the oscillator assembly being suspended and connected to the side portion and surrounding the outer periphery of the first magnetic circuit system; The bottom has a boss located between the first magnetic circuit system and the oscillator assembly, and the centering support is connected to the boss.

[0011] In one embodiment, the housing further includes a first conductive element embedded in the boss, one end of the centering support is connected to the voice coil and electrically connected to the lead of the voice coil, and the other end of the centering support is connected to the boss and electrically connected to the first conductive element; And / or, the housing further includes a second conductive element embedded in the bottom, and the lead of the drive coil is electrically connected to the second conductive element; And / or, the bottom is integrally injection molded with the magnetic yoke.

[0012] In one embodiment, the two centering supports are arranged at intervals along a third direction and are symmetrically arranged along the second direction, with the first direction, the second direction, and the third direction being perpendicular to each other. And / or, each of the centering supports includes a first connecting portion, a second connecting portion, and a spring arm portion connecting the first connecting portion and the second connecting portion. The housing is provided with a boss located between the first magnetic circuit system and the oscillator assembly. The first connecting portion is connected to the boss, and the second connecting portion passes through the clearance gap and is connected to the voice coil in the magnetic gap.

[0013] In one embodiment, the oscillator assembly includes: A counterweight, wherein the counterweight has a clearance space, the first magnetic circuit system is located within the clearance space, and the counterweight is suspended on the outer periphery of the first magnetic circuit system; and Two second magnetic circuit systems are disposed on the counterweight and are respectively located on both sides of the first magnetic circuit system along the second direction; There are two drive coils, and each of the second magnetic circuit systems is arranged opposite to one of the drive coils along the first direction.

[0014] In one embodiment, each of the second magnetic circuit systems includes a first magnet and a second magnet arranged adjacent to each other along the second direction, and each of the drive coils includes two long sides spaced apart and opposite each other along the second direction, the two long sides extending along the third direction, and the two long sides being opposite to and spaced apart from the first magnet and the second magnet, respectively. The first direction, the second direction, and the third direction are arranged perpendicularly to each other.

[0015] In one embodiment, the counterweight is provided with a mounting slot for each of the second magnetic circuit systems, and each of the second magnetic circuit systems is disposed in a mounting slot; And / or, each of the second magnetic circuit systems further includes a first magnetic guide plate, which is disposed on the counterweight and located on the side of the first magnet and the second magnet facing away from the drive coil; And / or, both the first magnet and the second magnet are magnetized along the first direction but in opposite directions.

[0016] In one embodiment, the oscillator assembly further includes two elastic elements, which are respectively disposed on both sides of the counterweight along the second direction. One end of each elastic element is connected to the counterweight, and the other end of each elastic element is connected to the housing, so that the counterweight is suspended on the outer periphery of the first magnetic circuit system. The two elastic elements are arranged in a centrally symmetrical manner about the central axis of the clearance space; and / or, each elastic element includes a deformation part and a first fixed end and a second fixed end connected to both ends of the deformation part, the first fixed end being connected to the counterweight and the second fixed end being connected to the housing.

[0017] In one embodiment, a first buffer structure, which is a buffer foam, is provided between the oscillator assembly and the housing. And / or, a second buffer structure is provided between the oscillator assembly and the first magnetic circuit system, the second buffer structure being buffer foam.

[0018] In one embodiment, the diaphragm assembly includes a diaphragm and a dome disposed at the center of the diaphragm, and the outer periphery of the diaphragm is connected to the housing; The first vibration system further includes a frame, one end of which is connected to the dome, and the other end of which is connected to the voice coil along the first direction.

[0019] In one embodiment, the skeleton includes a top wall and a side wall connected to the periphery of the top wall, the top wall and the side wall forming a cavity, the top wall being connected to the dome, and the side wall extending along the first direction and being connected to the voice coil; The sidewall is provided with a through hole communicating with the cavity; and / or, the top wall extends along the surface of the dome to form an extension wall; and / or, the end of the sidewall away from the top wall is bent and extended to form a bent portion, the bent portion being connected to the end of the voice coil.

[0020] The present invention also proposes an electronic device, which includes the vibration sound-generating device described above.

[0021] The vibration-generating device of this invention houses a sound-generating unit and a vibration unit within a housing. The sound-generating unit is configured as a first vibration system vibrating along a first direction and a first magnetic circuit system positioned opposite the first vibration system along the first direction. The voice coil of the first vibration system is connected to the diaphragm assembly and correspondingly positioned with the magnetic gap of the first magnetic circuit system. This allows the voice coil to drive the diaphragm assembly to vibrate and generate sound. The vibrator assembly of the vibration unit is suspended around the outer periphery of the sound-generating unit, and at least two drive coils of the stator assembly are respectively positioned on both sides of the sound-generating unit along a second direction. The stator assembly drives the vibration... The sub-component vibrates along the second direction, and the first direction is perpendicular to the second direction, so that the projections of the first magnetic circuit system and the vibrating unit along the first direction are both located within the projection range of the diaphragm assembly along the first direction. This integrates the sound-generating unit and the vibrating unit into one unit, achieving dual functions of sound playback and vibration feedback. Furthermore, it maximizes the sound-generating area of ​​the diaphragm assembly, improving the sound-generating effect of the sound-generating unit. Simultaneously, by setting the sound-generating unit along the first direction and arranging the vibrating unit along the second direction, the sound-generating unit and the vibrating unit are located in two mutually perpendicular directions, which not only makes reasonable use of space but also ensures that the sound-generating unit and the vibrating unit are seamlessly integrated. The devices need to be stacked, and their functions are independent and do not interfere with each other. This ensures the sound generation and vibration feedback performance of the vibration-generating device, simplifies the assembly of the vibration-generating device, reduces the internal space occupied by the device, and decreases its thickness, meeting the requirements for a thinner and lighter product design. Furthermore, by setting the magnetic yoke of the first magnetic circuit system as a base plate and a side plate, the base plate and side plate of the magnetic yoke form a receiving groove, thereby using the receiving groove to install and fix the central magnet. The central magnet is located on the base plate and spaced apart from the side plate to form a magnetic gap. The side plate is set along the second direction. The first and second side plates are located on opposite sides of the central magnetic part, with clearance gaps formed at their respective ends. A centering support is provided, with one end of the centering support passing through the clearance gap and connecting to the voice coil, and the other end connecting to the housing. This arrangement makes the structural design of the first magnetic circuit system simpler and more reasonable. A magnetic gap is formed between the side plate of the magnetic yoke and the central magnetic part. Moreover, the clearance gap formed by the side plate of the magnetic yoke can provide clearance space for the centering support. The installation of the centering support can center the voice coil and effectively improve the acoustic performance of the vibration sound-generating device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a structure of an embodiment of the vibration sound-generating device provided by the present invention; Figure 2 A schematic diagram of the structure of another embodiment of the vibration sound-generating device provided by the present invention; Figure 3 An exploded view of an embodiment of the vibration sound-generating device provided by the present invention; Figure 4 A cross-sectional schematic diagram of an embodiment of the vibration sound-generating device provided by the present invention; Figure 5 A cross-sectional schematic diagram from another perspective of an embodiment of the vibration sound-generating device provided by the present invention; Figure 6 A schematic diagram of an embodiment of the vibration sound-generating device provided by the present invention, without the diaphragm assembly; Figure 7 A schematic diagram of an embodiment of the vibration sound-generating device provided by the present invention, without the sound-generating unit; Figure 8 A partial structural schematic diagram of an embodiment of the vibration sound-generating device provided by the present invention; Figure 9 A schematic diagram of a skeleton provided by the present invention; Figure 10 This is a schematic diagram of the structure of an embodiment of the vibration unit provided by the present invention.

[0024] Explanation of icon numbers: 100. Vibration sound-generating device; 1. Housing; 11. Bottom; 111. Boss; 112. First conductive element; 113. Second conductive element; 114. Through hole; 115. First base plate; 116. Second base plate; 12. Side; 121. Limiting part; 122. First vertical wall; 123. Second vertical wall; 124. Long axis side; 13. Accommodating space; 14. Opening; 2. Sound-generating unit; 21. First vibration system; 211 2111, Diaphragm assembly; 2112, Diaphragm; 2112, Dome; 212, Voice coil; 213, Centering support; 2131, First connecting part; 2132, Second connecting part; 2133, Spring arm part; 2134, First solder pad part; 2135, Second solder pad part; 214, Frame; 2141, Top wall; 2142, Side wall; 2143, Cavity; 2144, Through hole; 2145, Extension wall; 2146, Bending part; 22. First magnetic circuit system; 221, magnetic yoke; 2211, receiving groove; 2212, base plate; 2213, side plate; 2214, clearance gap; 2215, first side plate; 2216, second side plate; 222, central magnetic part; 2221, first central magnet; 2222, central magnetic plate; 2223, second central magnet; 223, magnetic gap; 3, vibration unit; 31, oscillator assembly; 311, counterweight; 3111 3112. Clearance space; 3113. Mounting slot; 3114. Limiting slot; 312. Second magnetic circuit system; 3121. First magnet; 3122. Second magnet; 3123. First magnetic guide plate; 314. Elastic element; 3131. Deformation part; 3132. First fixed end; 3133. Second fixed end; 315. First buffer structure; 316. Second buffer structure; 32. Stator assembly; 321. Drive coil; 322. Long side.

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] 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 positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0030] This invention proposes a vibration-generating sound device 100, which is applied in electronic devices. It is understood that the electronic device can be a mobile phone, game console, speaker, smart glasses, etc., and is not limited thereto.

[0031] Please refer to the reference. Figures 1 to 10As shown, in this embodiment of the invention, the vibration sound-generating device 100 includes a housing 1, a sound-generating unit 2, and a vibration unit 3. The sound-generating unit 2 is disposed in the housing 1 and includes a first vibration system 21 vibrating along a first direction and a first magnetic circuit system 22 disposed opposite to the first vibration system 21 along the first direction. The first magnetic circuit system 22 includes a magnetic yoke 221 and a central magnetic part 222. The magnetic yoke 221 includes a base plate part 2212 and a side plate part 2213 extending along the first direction toward the direction close to the first vibration system 21. The central magnetic part 222 is disposed in the base plate part 2212 and spaced apart from the side plate part 2213 to form a magnetic gap 223. The side plate part 2213 includes a first side plate 2215 and a second side plate 2216 located on opposite sides of the central magnetic part 222 along a second direction. The opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced to form a clearance gap 2214. The first vibration system 21 includes a diaphragm assembly 211. The system includes a voice coil 212 and two centering supports 213. The voice coil 212 is connected to the diaphragm assembly 211 and is correspondingly arranged with the magnetic gap 223. The two centering supports 213 are respectively arranged with the two clearance gaps 2214. One end of each centering support 213 passes through the clearance gap 2214 and is connected to the voice coil 212. The other end of each centering support 213 is connected to the housing 1. The vibration unit 3 is disposed inside the housing 1. The vibration unit 3 includes an oscillator assembly 31 suspended on the outer periphery of the sound-generating unit 2 and a stator assembly 32 located on opposite sides of the sound-generating unit 2. The stator assembly 32 includes at least two drive coils 321 disposed on the housing 1. The at least two drive coils 321 are respectively located on both sides of the sound-generating unit 2 along the second direction. The stator assembly 32 drives the oscillator assembly 31 to vibrate along the second direction. The first direction is perpendicular to the second direction. The projections of the first magnetic circuit system 22 and the vibration unit 3 along the first direction are both located within the projection range of the diaphragm assembly 211 along the first direction.

[0032] In this embodiment, the housing 1 of the vibration sound-generating device 100 is used to install, fix, support, and protect components such as the sound-generating unit 2 and the vibration unit 3. That is, the housing 1 provides a mounting base for components such as the sound-generating unit 2 and the vibration unit 3. It can be understood that the housing 1 can be a shell, housing, box, or enclosure structure with an accommodating space 13.

[0033] Understandably, the sound-generating unit 2 can be a speaker unit, and the speaker can be a miniature speaker. The sound-generating unit 2 is used to generate or emit sound. The vibration unit 3 can be a motor structure or motor assembly, used to achieve vibration feedback function.

[0034] In this embodiment, the first vibration system 21 and the first magnetic circuit system 22 of the sound-generating unit 2 are arranged opposite each other along a first direction (e.g., a vertical direction), and the first vibration system 21 is capable of vibrating along the first direction. It is understood that by connecting the outer periphery of the diaphragm assembly 211 of the first vibration system 21 to the housing 1, and placing the first magnetic circuit system 22 within the accommodating space 13 of the housing 1, opposite and spaced from the diaphragm assembly 211, one end of the voice coil 212 is connected to the diaphragm assembly 211, and the other end of the voice coil 212 is arranged opposite to the magnetic gap 223 of the first magnetic circuit system 22. Thus, when current is passed through the voice coil 212, the voice coil 212 drives the diaphragm assembly 211 to vibrate within the magnetic field formed by the first magnetic circuit system 22, thereby generating sound.

[0035] Understandably, the sound-generating unit 2 is disposed on the housing 1 and arranged along the first direction. Optionally, the outer contour of the first vibration system 21 of the sound-generating unit 2 can be circular or square, and the outer contour of the first magnetic circuit system 22 can be circular or square, without limitation. It should be noted that the outer contour of the first vibration system 21 and the outer contour of the first magnetic circuit system 22 of the sound-generating unit 2 can be the same or different, depending on the actual application scenario, without limitation.

[0036] In this embodiment, as Figures 3 to 8 As shown, the first magnetic circuit system 22 is configured as a magnetic yoke 221 and a central magnetic part 222, with a receiving groove 2211 provided in the magnetic yoke 221. The central magnetic part 222 is disposed within the receiving groove 2211 and spaced from the side wall of the receiving groove 2211 to form a magnetic gap 223. It can be understood that the receiving groove 2211 of the magnetic yoke 221 of the first magnetic circuit system 22 of the sound-generating unit 2 allows for both mounting and limiting of the central magnetic part 222, and also allows the central magnetic part 222 to form a magnetic gap 223 with the side wall of the receiving groove 2211 of the magnetic yoke 221.

[0037] Optionally, the magnetic yoke 221 can be a U-shaped iron or a U-shaped basin structure, which is not limited here. Understandably, the end of the voice coil 212 away from the diaphragm assembly 211 is suspended in the magnetic gap 223.

[0038] In this embodiment, as Figures 3 to 8 As shown, the magnetic yoke 221 includes a base plate portion 2212 and a side plate portion 2213 disposed around the base plate portion 2212. The side plate portion 2213 extends along a first direction toward the direction close to the first vibration system 21, so that the base plate portion 2212 and the side plate portion 2213 enclose each other to form an accommodating groove 2211. The central magnetic portion 222 is connected to the base plate portion 2212 and is spaced apart from the side plate portion 2213 to enclose a magnetic gap 223.

[0039] To avoid problems such as polarization or oscillation of the voice coil 212 during vibration, in one embodiment, such as Figure 3 , Figure 6 and Figure 8 As shown, the first vibration system 21 also includes a centering support 213, one end of which is connected to the voice coil 212, and the other end of which is connected to the housing 1. Understandably, the leads of the voice coil 212 are spot-welded to the centering support 213, and the other end of the centering support 213 is connected to an external circuit through a conductive spring molded in the housing 1.

[0040] Understandable, such as Figure 3 , Figures 6 to 8 As shown, by setting the side plate portion 2213 of the magnetic yoke 221 as a first side plate 2215 and a second side plate 2216 located on opposite sides of the central magnetic portion 222 along the second direction, the opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced to form a clearance gap 2214, thereby providing installation space for the centering support piece 213 using the clearance gap 2214.

[0041] In this embodiment, one end of the centering support 213 passes through the clearance gap 2214 and connects to the voice coil 212 within the magnetic gap 223, while the other end of the centering support 213 is connected to the housing 1. It can be understood that by providing the centering support 213, the voice coil 212 is centered, preventing polarization or oscillation during vibration. Simultaneously, the centering support 213 can also be used to connect the voice coil 212 to external circuitry.

[0042] Optionally, there are two centering supports 213. The two centering supports 213 are respectively provided with two clearance gaps 2214. One end of each centering support 213 passes through the clearance gap 2214 and is connected to the voice coil 212, and the other end of each centering support 213 is connected to the housing 1.

[0043] In this embodiment, the central magnetic part 222 may optionally be cylindrical, and the side plate part 2213 of the magnetic yoke 221 may optionally be hollow cylindrical. That is, the first side plate 2215 and the second side plate 2216 of the side plate part 2213 are both semi-circular arcs and are symmetrically arranged. It can be understood that the two clearance gaps 2214 are located in the diametrical direction of the hollow cylindrical side plate part 2213 and correspond to each other.

[0044] In this embodiment, the central magnetic part 222 may optionally be cylindrical, and the receiving groove 2211 of the magnetic yoke 221 may optionally be a cylindrical cavity. It is understood that the central magnetic part 222 and the side plate part 2213 of the magnetic yoke 221 enclose and form an annular magnetic gap 223. In this case, the voice coil 212 may optionally be circular, thus most effectively utilizing the voice coil wire to cut the magnetic field lines in the magnetic field and improving the BL value of the product.

[0045] It should be noted that by using a circular voice coil 212, in conjunction with the annular magnetic gap 223 formed by the cylindrical central magnetic part 222 and the cylindrical side plate part 2213, the magnetic gap 223 becomes uniform and consistent. Combined with the magnetic alignment structure of the central magnetic part 222, this effectively enhances the magnetic field strength. Understandably, in a square magnetic circuit using a square voice coil structure, the magnet requires a larger radius (R) tolerance, while using a circular magnet effectively avoids this R tolerance. Therefore, the combination of a circular voice coil 212 and a circular magnet results in a higher BL value.

[0046] Optionally, two centering supports 213 are symmetrically arranged on opposite sides of the side plate portion 2213. In this embodiment, the two centering supports 213 are spaced apart and symmetrically arranged along a third direction, that is, the two centering supports 213 are spaced apart along a third direction and symmetrically arranged along a second direction, and the first direction, the second direction and the third direction are arranged perpendicularly to each other.

[0047] In this embodiment, by placing the vibration unit 3 inside the housing 1, the vibrator assembly 31 of the vibration unit 3 is suspended on the outer periphery of the sound-generating unit 2, and the stator assembly 32 is placed on opposite sides of the sound-generating unit 2. Thus, the stator assembly 32 drives the vibrator assembly 31 to vibrate along the second direction, and the first direction is perpendicular to the second direction, thereby realizing the vibration feedback function using the vibration unit 3.

[0048] Optionally, the stator assembly 32 includes at least two drive coils 321, which are respectively located on both sides of the sound-generating unit 2 along the second direction. This allows the drive coils 321 to drive the vibrator assembly 31 to vibrate along the second direction. For example, there can be two drive coils 321, with one drive coil 321 located on each side of the sound-generating unit 2 in the second direction; or, for another example, there can be four drive coils 321, with two drive coils 321 located on each side of the sound-generating unit 2 in the second direction.

[0049] Understandably, by arranging the sound-generating unit 2 along the first direction and the vibration unit 3 along the second direction, the projections of the first magnetic circuit system 22 of the sound-generating unit 2 and the vibration unit 3 along the first direction are both located within the projection range of the diaphragm assembly 211 of the sound-generating unit 2 along the first direction. This maximizes the sound-generating area of ​​the diaphragm assembly 211 and improves the sound-generating effect of the sound-generating unit 2. Moreover, the above arrangement also allows the sound-generating unit 2 and the vibration unit 3 to be located in two mutually perpendicular directions, which not only makes reasonable use of space layout and simplifies the assembly of the vibration sound-generating device 100, but also occupies less internal space of the vibration sound-generating device 100. At the same time, the sound-generating unit 2 and the vibration unit 3 do not need to be stacked, reducing the thickness of the product and meeting the requirements of lightweight design. Furthermore, the functions can be independent and do not interfere with each other, ensuring both the vibration feedback function and the sound-generating function of the vibration sound-generating device 100.

[0050] In this embodiment, as Figures 1 to 3 , Figures 6 to 8 As shown, the vibration sound-generating device 100 can be a square structure, that is, the outer contour of the housing 1 is square. The first direction is the thickness direction or the Z-direction of the vibration sound-generating device 100, the second direction is the length direction of the vibration sound-generating device 100, and the third direction is the width direction of the vibration sound-generating device 100. Of course, the vibration sound-generating device 100 can also be a cylindrical structure, that is, the outer contour of the housing 1 is cylindrical. In this case, the first direction is the axial direction or the vertical Z-direction of the vibration sound-generating device 100, the second direction is the horizontal X-direction of the vibration sound-generating device 100, and the third direction is the horizontal Y-direction of the vibration sound-generating device 100. There is no limitation here.

[0051] The vibration sound-generating device 100 of the present invention houses a sound-generating unit 2 and a vibration unit 3 within a housing 1. The sound-generating unit 2 is configured as a first vibration system 21 vibrating along a first direction and a first magnetic circuit system 22 disposed opposite to the first vibration system 21 along the first direction. The voice coil 212 of the first vibration system 21 is connected to the diaphragm assembly 211 and is correspondingly disposed with the magnetic gap 223 of the first magnetic circuit system 22. Thus, the voice coil 212 drives the diaphragm assembly 211 to vibrate and generate sound. The vibrator assembly 31 of the vibration unit 3 is suspended on the outer periphery of the sound-generating unit 2, and at least two drive coils 321 of the stator assembly 32 are respectively disposed on both sides of the sound-generating unit 2 along a second direction. The stator assembly 32 drives the vibrator assembly 31 to vibrate along the second direction, and the first direction is perpendicular to the second direction, so that the first magnetic circuit system 22 and the vibration unit 3 vibrate along the first direction. The projections of the directions are all located within the projection range of the diaphragm assembly 211 along the first direction. In this way, the sound generating unit 2 and the vibration unit 3 are integrated into one, realizing the dual functions of sound playback and vibration feedback. Moreover, it can maximize the sound generating area of ​​the diaphragm assembly 211 and improve the sound generating effect of the sound generating unit 2. At the same time, the sound generating unit 2 is set along the first direction and the vibration unit 3 is arranged along the second direction, so that the sound generating unit 2 and the vibration unit 3 are located in two mutually perpendicular directions. This not only makes reasonable use of space layout, so that the sound generating unit 2 and the vibration unit 3 do not need to be stacked, but also allows their functions to be independent and do not interfere with each other. This can ensure the sound generating performance and vibration feedback performance of the vibration generating device 100, and also simplifies the assembly of the vibration generating device 100, occupies less internal space of the vibration generating device 100, and reduces the thickness of the vibration generating device 100, meeting the requirements of the product's lightweight design.Furthermore, by configuring the magnetic yoke 221 of the first magnetic circuit system 22 as a base plate portion 2212 and a side plate portion 2213, the base plate portion 2212 and the side plate portion 2213 of the magnetic yoke 221 form a receiving groove 2211, thereby using the receiving groove 2211 to install and fix the central magnetic part 222, so that the central magnetic part 222 is disposed on the base plate portion 2212 and spaced apart from the side plate portion 2213 to form a magnetic gap 223, and the side plate portion 2213 is configured as a first side plate 2215 and a second side plate 2216 disposed on opposite sides of the central magnetic part 222 along the second direction, such that the opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced apart to form A clearance 2214 is formed, and a centering support 213 is provided, such that one end of the centering support 213 passes through the clearance 2214 and connects to the voice coil 212, while the other end of the centering support 213 connects to the housing 1. This arrangement simplifies the structural design of the first magnetic circuit system 22. A magnetic gap 223 is formed between the side plate portion 2213 of the magnetic yoke 221 and the central magnetic portion 222. Furthermore, the clearance 2214 formed by the side plate portion 2213 of the magnetic yoke 221 provides clearance space for the centering support 213. The installation of the centering support 213 can center the voice coil 212, effectively improving the acoustic performance of the vibration sound-generating device 100.

[0052] In one embodiment, the oscillator assembly 31 includes a counterweight 311 and two second magnetic circuit systems 312. The counterweight 311 has a clearance space 3111. The first magnetic circuit system 22 is located within the clearance space 3111, and the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22. The two second magnetic circuit systems 312 are disposed on the counterweight 311 and are respectively located on both sides of the first magnetic circuit system 22 along the second direction. There are two drive coils 321, and each second magnetic circuit system 312 and a drive coil 321 are arranged opposite to each other along the first direction.

[0053] In this embodiment, as Figures 3 to 8 , Figure 10As shown, the stator assembly 32 of the vibration unit 3 may optionally include two drive coils 321, which are located on both sides of the first magnetic circuit system 22 of the sound-generating unit 2 along the second direction. Understandably, by setting the oscillator assembly 31 as a counterweight 311 and two second magnetic circuit systems 312 disposed on the counterweight 311, the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22, and the two second magnetic circuit systems 312 are respectively located on both sides of the first magnetic circuit system 22 along the second direction. In this way, each second magnetic circuit system 312 and a drive coil 321 are arranged opposite to each other along the first direction. Thus, by passing current through the drive coil 321, the drive coil 321 generates relative motion between the drive coil 321 and the second magnetic circuit system 312 in the magnetic field of the second magnetic circuit system 312. Since the drive coil 321 is fixed on the housing 1, and the second magnetic circuit system 312 is suspended in the housing 1 through the counterweight 311, the second magnetic circuit system 312 drives the counterweight 311 to vibrate in the second direction within the housing 1.

[0054] Understandably, the counterweight 311 provides the oscillator assembly 31 with a certain weight, thus generating a noticeable vibration during vibration, and also serves to secure the second magnetic circuit system 312. Optionally, the counterweight 311 is made of a high-density material. In this embodiment, the oscillator assembly 31 can be connected to the housing 1 via a connector, elastic member, or suspension member, allowing the oscillator assembly 31 to be suspended within the accommodating space 13 of the housing 1.

[0055] To ensure the weight of the counterweight 311 and prevent it from interfering with the sound-generating unit 2 during vibration, in this embodiment, the counterweight 311 is provided with a clearance space 3111, within which the sound-generating unit 2 is located. Optionally, the clearance space 3111 is located in the center of the counterweight 311. The clearance space 3111 can be a through hole or a through-hole, etc., and is not limited here.

[0056] Understandably, the distance between the inner wall of the clearance space 3111 of the counterweight 311 and the outer periphery of the sound-generating unit 2 is greater than or equal to the vibration displacement of the counterweight 311 along the second direction, so as to prevent the vibrator assembly 31 from colliding or interfering with the outer periphery of the sound-generating unit 2 when it vibrates along the second direction.

[0057] In this embodiment, two second magnetic circuit systems 312 are attached or welded to both ends of the counterweight 311 along the second direction, forming a driving force with the drive coil 321 fixed in the housing 1, so as to realize the reciprocating motion of the oscillator assembly 31 in the long axis direction (i.e., the second direction).

[0058] In one embodiment, the oscillator assembly 31 further includes two elastic elements 313, which are respectively disposed on both sides of the counterweight 311 along the second direction. One end of each elastic element 313 is connected to the counterweight 311, and the other end of each elastic element 313 is connected to the housing 1, so that the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22.

[0059] In this embodiment, as Figures 3 to 8 , Figure 10 As shown, the counterweight 311 of the oscillator assembly 31 and the second magnetic circuit system 312 are connected to the housing 1 via elastic members 313 and suspended in the accommodating space 13 of the housing 1. Optionally, there are two elastic members 313, which are respectively disposed on both sides of the counterweight 311 along the second direction. It can be understood that one end of each elastic member 313 is connected to the counterweight 311, and the other end of each elastic member 313 is connected to the housing 1, so that the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22.

[0060] It should be noted that the elastic element 313 has the ability to deform, that is, when the counterweight 311 of the oscillator assembly 31 and the second magnetic circuit system 312 vibrate along the second direction, the elastic element 313 can deform and return to its original position. It is understood that the elastic element 313 can be a sheet, a spring, or a telescopic element, etc., and is not limited here.

[0061] Understandably, when the oscillator assembly 31 vibrates along the second direction (i.e., the major axis direction), the drive coil 321 generates a driving force, and the elastic element 313 generates a restoring force, thus achieving the reciprocating motion of the oscillator assembly 31. Optionally, an elastic element 313 is provided at each end of the counterweight block 311 of the oscillator assembly 31 along the second direction, such that one end of the elastic element 313 is fixed to the counterweight block 311, and the other end is fixed to the housing 1.

[0062] Optionally, the two elastic members 313 are arranged in a centrally symmetrical manner around the central axis of the clearance space 3111. This arrangement ensures the balance of the vibration of the oscillator assembly 31 along the second direction.

[0063] In this embodiment, the two drive coils 321 are symmetrically arranged about the center of the first magnetic circuit system 22, and the two second magnetic circuit systems 312 are symmetrically arranged about the central axis of the clearance space 3111. This ensures the balance of the counterweight 311 and the second magnetic circuit system 312 in vibration along the second direction.

[0064] In one embodiment, each elastic element 313 includes a deformation portion 3131 and a first fixed end 3132 and a second fixed end 3133 connected to both ends of the deformation portion 3131. The first fixed end 3132 is connected to the counterweight 311, and the second fixed end 3133 is connected to the housing 1.

[0065] In this embodiment, as Figures 3 to 8 , Figure 10 As shown, the elastic element 313 can be a spring sheet structure. By setting the elastic element 313 as a deformation part 3131 and a first fixed end 3132 and a second fixed end 3133 connected to both ends of the deformation part 3131, the first fixed end 3132 is connected to the counterweight 311 and the second fixed end 3133 is connected to the housing 1.

[0066] Optionally, the deformable portion 3131 of the elastic member 313 has at least one bend. In this embodiment, the second fixed end 3133 of the elastic member 313 is disposed at an angle to the deformable portion 3131.

[0067] In one implementation, such as Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 10 As shown, a first buffer structure 314 is provided between the oscillator assembly 31 and the housing 1. Optionally, the first buffer structure 314 is a buffer foam. Understandably, this arrangement allows the first buffer structure 314 to buffer the vibration of the oscillator assembly 31.

[0068] Optionally, the first buffer structure 314 is disposed on both sides of the oscillator assembly 31 along the second direction. In this embodiment, the first buffer structure 314 is disposed on the side of the first fixed end 3132 of the elastic member 313 facing away from the counterweight 311.

[0069] In one implementation, such as Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 10 As shown, a second buffer structure 315 is provided between the oscillator assembly 31 and the first magnetic circuit system 22. Optionally, the second buffer structure 315 is a buffer foam. Understandably, this arrangement allows the second buffer structure 315 to buffer the vibration of the oscillator assembly 31, preventing the oscillator assembly 31 from being impacted too much and affecting the first magnetic circuit system 22.

[0070] Optionally, the second buffer structure 315 is disposed within the clearance space 3111 of the oscillator assembly 31 and located on both sides along the second direction. In this embodiment, the second buffer structure 315 is disposed on the inner wall of the clearance space 3111 of the counterweight block 311 along the second direction.

[0071] In one embodiment, each second magnetic circuit system 312 includes a first magnet 3121 and a second magnet 3122 arranged adjacent to each other along a second direction, and each drive coil 321 includes two long sides 322 spaced apart and opposite to each other along the second direction. The two long sides 322 extend along a third direction and are respectively opposite to and spaced apart from the first magnet 3121 and the second magnet 3122; wherein the first direction, the second direction and the third direction are arranged perpendicularly to each other.

[0072] In this embodiment, as Figure 4 As shown, by setting the second magnetic circuit system 312 as a first magnet 3121 and a second magnet 3122, the first magnet 3121 and the second magnet 3122 are arranged adjacent to each other along the second direction, and the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 correspond to the two long sides 322 of the drive coil 321 respectively. In this way, when current is passed through the drive coil 321, the magnetic field formed by the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 will be used to achieve vibration.

[0073] Optionally, the first magnet 3121 and the second magnet 3122 are both magnetized along a first direction but in opposite directions. This arrangement allows the first magnet 3121 and the second magnet 3122 to form magnetic circuits that pass through the two long sides 322 of the drive coil 321 respectively, so that the magnetic field driving force generated by the drive coil 321 can drive the oscillator assembly 31 to reciprocate.

[0074] Understandably, the two long sides 322 of the drive coil 321 extend along a third direction, and the first direction, the second direction, and the third direction are arranged perpendicularly to each other. In this embodiment, the drive coil 321 is a planar coil or a flat coil.

[0075] In one embodiment, each second magnetic circuit system 312 further includes a first magnetic plate 3123, which is disposed on the counterweight 311 and located on the side of the first magnet 3121 and the second magnet 3122 facing away from the drive coil 321.

[0076] In this embodiment, as Figure 4 As shown, by setting a first magnetic plate 3123 and placing the first magnetic plate 3123 on the side opposite to the drive coil 321 of the first magnet 3121 and the second magnet 3122, the magnetic circuit formed by the first magnetic plate 3123 and the second magnet 3122 is magnetized, thereby further allowing more magnetic field lines of the magnetic circuit to pass through the two long sides 322 of the drive coil 321, increasing the magnetic field driving force acting on the oscillator assembly 31, and improving the vibration feedback effect of the vibration unit 3.

[0077] In one embodiment, the counterweight 311 is provided with a mounting groove 3112 corresponding to each second magnetic circuit system 312, and each second magnetic circuit system 312 is disposed in a mounting groove 3112.

[0078] In this embodiment, as Figure 4 and Figure 10 As shown, by providing a mounting groove 3112 on the counterweight 311, the second magnetic circuit system 312 is mounted and fixed using the mounting groove 3112. This makes the assembly structure between the counterweight 311 and the second magnetic circuit system 312 more compact, saves assembly space, improves the installation stability of the second magnetic circuit system 312, and limits the installation position of the second magnetic circuit system 312. It is understood that the mounting groove 3112 is formed by a recess on the side of the counterweight 311 facing the drive coil 321.

[0079] It should be noted that the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 can be bonded to the first magnetic plate 3123. The first magnetic plate 3123 and the counterweight 311 can be integrally formed; or, the first magnetic plate 3123 and the counterweight 311 can be bonded or welded together, which is not limited here.

[0080] In one embodiment, the central magnetic part 222 includes a first central magnet 2221, a central magnetic plate 2222 and a second central magnet 2223 stacked sequentially along a first direction. The first central magnet 2221 is connected to the base plate part 2212. The first central magnet 2221 and the second central magnet 2223 are both magnetized along the first direction and the magnetization directions are opposite.

[0081] In this embodiment, as Figure 4 and Figure 5 As shown, by setting the central magnetic part 222 as a magnetically opposed structure, the magnetic field strength of the central magnetic part 222 is effectively improved. The first central magnet 2221, the central magnetic plate 2222 and the second central magnet 2223 of the central magnetic part 222 are stacked sequentially in the receiving groove 2211 of the magnetic yoke 221 along the first direction.

[0082] Understandably, the first central magnet 2221 is connected to the bottom plate portion 2212 of the magnetic yoke 221, and the periphery of the first central magnet 2221, the central magnetic plate 2222 and the second central magnet 2223 are all spaced apart from the side plate portion 2213 of the magnetic yoke 221 to form a magnetic gap 223.

[0083] Optionally, both the first central magnet 2221 and the second central magnet 2223 are magnetized along the first direction but in opposite directions. It is understood that the magnetic structure formed by the central magnetic section 222 and the magnetic yoke 221 form a magnetic flux loop, which effectively increases the magnetic field strength and enhances the driving force on the voice coil 212.

[0084] In one embodiment, each centering support 213 includes a first connecting portion 2131, a second connecting portion 2132, and a spring arm portion 2133 connecting the first connecting portion 2131 and the second connecting portion 2132. The housing 1 is provided with a boss 111 located between the first magnetic circuit system 22 and the vibrator assembly 31. The first connecting portion 2131 is connected to the boss 111, and the second connecting portion 2132 passes through the clearance gap 2214 and is connected to the voice coil 212 in the magnetic gap 223.

[0085] In this embodiment, as Figure 3 , Figure 6 , Figure 8 As shown, the spring arm portion 2133 of the centering support 213 connects to the first connecting portion 2131 and the second connecting portion 2132. The first connecting portion 2131 of the centering support 213 is connected to the housing 1, and the second connecting portion 2132 passes through the clearance gap 2214 and connects to the voice coil 212 within the magnetic gap 223. It is understood that the first connecting portion 2131 of the centering support 213 includes one spring arm portion 2133, and the second connecting portion 2132 includes at least one spring arm portion 2133. Optionally, the number of spring arm portions 2133 is the same as the number of second connecting portions 2132. To improve the deformation capability of the spring arm portion 2133, the spring arm portion 2133 may optionally include at least one bend.

[0086] In order to enable the voice coil 212 to be connected to the external circuit, in one embodiment, the housing 1 is provided with a first conductive element 112, and the first vibration system 21 further includes a centering support 213. One end of the centering support 213 is connected to the voice coil 212 and electrically connected to the lead wire of the voice coil 212. The other end of the centering support 213 is connected to the housing 1 and electrically connected to the first conductive element 112.

[0087] Understandable, such as Figure 8 As shown, the centering support 213 has a first pad portion 2134 and a second pad portion 2135. The housing 1 has a first conductive element 112. The first pad portion 2134 is connected to the first conductive element 112 for conduction, and the second pad portion 2135 is electrically connected to the lead wire of the voice coil 212. This allows the voice coil 212 to be connected to the first conductive element 112 via the centering support 213 for conduction, and the external circuit is connected to the first conductive element 112, thus enabling the voice coil 212 to be connected to the external circuit. Optionally, the first conductive element 112 is embedded within the housing 1.

[0088] In one embodiment, the housing 1 forms an accommodating space 13 with an opening 14. The first magnetic circuit system 22 and the vibration unit 3 are both disposed in the accommodating space 13. The outer periphery of the diaphragm assembly 211 is connected to the housing 1 to cover the opening 14. The vibration sound generating device 100 is also provided with a through hole 114 that communicates with the accommodating space 13. The through hole 114 passes through the central magnetic part 222, the bottom plate part 2212 and the housing 1 in sequence.

[0089] In this embodiment, as Figures 4 to 8 As shown, the housing 1 has an accommodating space 13, that is, the housing 1 is a cylindrical structure with one end open and the other end closed. By connecting the outer periphery of the diaphragm assembly 211 of the sound-generating unit 2 to the housing 1 to cover the opening 14, the diaphragm assembly 211 and the housing 1 cooperate to form a sealed vibration cavity. In order to ensure the vibration performance of the diaphragm assembly 211 and maintain the air pressure balance on both sides of the diaphragm assembly 211, the vibration sound-generating device 100 is also provided with a through hole 114 communicating with the accommodating space 13. In this way, airflow can be leaked through the through hole 114 to achieve air pressure balance on both sides of the diaphragm assembly 211.

[0090] Understandably, both the first magnetic circuit system 22 and the vibration unit 3 of the sound-generating unit 2 are disposed within the accommodating space 13, such that the projections of the first magnetic circuit system 22 and the vibration unit 3 along the first direction are both located within the projection range of the diaphragm assembly 211 along the first direction. This allows the diaphragm assembly 211 to have a relatively large vibration area, and also prevents the first magnetic circuit system 22 and the vibration unit 3 of the sound-generating unit 2 from stacking, effectively reducing the size of the vibration sound-generating device 100 in the thickness direction (i.e., the first direction).

[0091] Optionally, the through hole 114 passes through the first magnetic circuit system 22 and the housing 1 in sequence, that is, the through hole 114 passes through the central magnetic part 222, the bottom plate part 2212 and the housing 1 in sequence.

[0092] In one embodiment, the housing 1 includes a bottom 11 and a side portion 12 disposed around the periphery of the bottom 11. The bottom 11 and the side portion 12 enclose a receiving space 13 with an opening 14. A first magnetic circuit system 22 is disposed on the bottom 11 and located within the receiving space 13. The outer periphery of the diaphragm assembly 211 is connected to the end of the side portion 12 away from the bottom 11 and covers the opening 14. There are two drive coils 321, which are spaced apart on the bottom 11 and located on both sides of the first magnetic circuit system 22 along the second direction. The oscillator assembly 31 is suspended and connected to the side portion 12 and surrounds the outer periphery of the first magnetic circuit system 22. The bottom 11 is provided with a boss 111 located between the first magnetic circuit system 22 and the oscillator assembly 31, and the centering support plate 213 is connected to the boss 111.

[0093] In this embodiment, as Figures 3 to 8As shown, the side portion 12 of the housing 1 surrounds the periphery of the bottom 11, so that the housing 1 forms an accommodating space 13 with an opening 14 at one end. The first magnetic circuit system 22 of the sound-generating unit 2 is disposed on the bottom 11 and located within the accommodating space 13. The outer periphery of the diaphragm assembly 211 is connected to the end of the side portion 12 away from the bottom 11 and covers the opening 14.

[0094] Understandably, the stator assembly 32 of the vibration unit 3 is located at the bottom 11 and on both sides of the first magnetic circuit system 22 along the second direction. That is, at least two drive coils 321 are spaced apart at the bottom 11 and on both sides of the first magnetic circuit system 22 along the second direction. The oscillator assembly 31 is suspended and connected to the side 12 and surrounds the outer periphery of the first magnetic circuit system 22. In this embodiment, the oscillator assembly 31 is connected to the side 12 of the housing 1 through an elastic member 313, so that the counterweight 311 and the second magnetic circuit system 312 are suspended in the accommodating space 13.

[0095] In this embodiment, as Figure 3 , Figures 5 to 8 As shown, the bottom 11 of the housing 1 is provided with a boss 111 located between the first magnetic circuit system 22 and the oscillator assembly 31, and the centering support plate 213 is connected to the boss 111. It can be understood that the first connecting part 2131 of the centering support plate 213 is connected to the boss 111.

[0096] In one embodiment, the housing 1 further includes a first conductive member 112 embedded in the boss 111, one end of the centering support 213 is connected to the voice coil 212 and electrically connected to the lead wire of the voice coil 212, and the other end of the centering support 213 is connected to the boss 111 and electrically connected to the first conductive member 112.

[0097] Optionally, the first conductive element 112 is embedded in the bottom 11 of the housing 1. In this embodiment, the first conductive element 112 is embedded in the boss 111 and is partially exposed on the end face where the boss 111 is connected to the first connecting portion 2131.

[0098] In this embodiment, the housing 1 and the magnetic yoke 221 of the first magnetic circuit system 22 can be selected as an integrally formed structure. For example... Figures 2 to 4 As shown, the bottom 11 includes a first bottom plate 115 and a second bottom plate 116, the stator assembly 32 is disposed on the first bottom plate 115, and the first magnetic circuit system 22 is disposed on the second bottom plate 116.

[0099] Optionally, the first base plate 115 is a metal part, and the second base plate 116 is a plastic part. In this embodiment, the drive coil 321 of the stator assembly 32 is disposed on the first base plate 115. By making the first base plate 115 a metal part, the first base plate 115 can guide and concentrate the magnetic field formed by the second magnetic circuit system 312. Of course, in other embodiments, the first base plate 115 can also be a magnetic plate, which is not limited here.

[0100] Understandably, the first base plate 115 and the second base plate 116 of the bottom 11 can be integrally injection molded. In this embodiment, the first base plate 115 and the side portion 12 of the bottom 11 can be welded, bonded, or integrally molded, etc., and are not limited here. Optionally, the first base plate 115 and the side portion 12 are integrally molded structures.

[0101] In order to enable the drive coil 321 to be connected to the external circuit, in one embodiment, the housing 1 further includes a second conductive element 113 embedded in the bottom 11, and the lead of the drive coil 321 is electrically connected to the second conductive element 113.

[0102] Understandably, the second conductive element 113 is disposed at the bottom 11 of the housing 1, and the second conductive element 113 is electrically connected to the lead of the drive coil 321. This allows the external circuit to be connected and conducted through the second conductive element 113 to the drive coil 321. Optionally, the second conductive element 113 is embedded in the bottom 11. In this embodiment, the second conductive element 113 is embedded in the second base plate 116 of the bottom 11, and the first conductive element 112 is embedded in the second base plate 116 of the bottom 11, with the first conductive element 112 and the second conductive element 113 spaced apart on the second base plate 116 of the bottom 11.

[0103] Optionally, the bottom plate 11 is integrally injection molded with the magnetic yoke 221 of the first magnetic circuit system 22. In this embodiment, the second bottom plate 116 is integrally injection molded with the magnetic yoke 221 of the first magnetic circuit system 22.

[0104] In one embodiment, the sidewall of the housing 1 extends toward the accommodating space 13 to form a limiting portion 121. The limiting portion 121 is located on the side of the oscillator assembly 31 facing the diaphragm assembly 211. Along the first direction, at least a portion of the limiting portion 121 is opposite to the oscillator assembly 31.

[0105] In this embodiment, as Figure 3 , Figures 5 to 8As shown, the side portion 12 of the housing 1 is provided with a limiting portion 121 extending toward the accommodating space 13. Optionally, the projection of the limiting portion 121 along the first direction is at least partially located within the projection range of the oscillator assembly 31 along the first direction. It can be understood that by providing the limiting portion 121, the oscillator assembly 31 of the vibration unit 3 is limited in the first direction, thereby preventing interference or influence on the diaphragm assembly 211 during the vibration of the oscillator assembly 31.

[0106] In this embodiment, as Figures 5 to 8 As shown, the side portion 12 of the housing 1 has two long axis sides 124 extending along the second direction, and each long axis side 124 is provided with a limiting portion 121 extending along the third direction. The first direction, the second direction and the third direction are arranged perpendicularly to each other.

[0107] In one embodiment, the oscillator assembly 31 is provided with a limiting groove 3113 corresponding to the limiting part 121, and the limiting part 121 is placed in the limiting groove 3113.

[0108] In this embodiment, as Figure 3 , Figures 5 to 8 , Figure 10 As shown, the counterweight 311 is provided with a limiting groove 3113 corresponding to each limiting part 121. Optionally, the extension length of the limiting groove 3113 along the second direction is greater than the extension length of the limiting part 121 along the second direction. It can be understood that this allows the limiting part 121 to limit the vibrator assembly 31 in the first direction, and the cooperation between the limiting part 121 and the limiting groove 3113 to limit it in the second direction, thus preventing the vibrator assembly 31 from vibrating too much along the second direction and colliding with the first magnetic circuit system 22, thereby affecting the sound output effect of the sound generating unit 2.

[0109] Optionally, the ratio of the extension length of the limiting part 121 in the second direction to the extension length of the counterweight 311 in the second direction is greater than 0.5 and less than or equal to 1. This arrangement ensures that the limiting part 121 limits the counterweight 311 in the first direction. For example, the ratio of the extension length of the limiting part 121 in the second direction to the extension length of the counterweight 311 in the second direction can be 0.6, 0.7, 0.8, etc., and is not limited here.

[0110] In this embodiment, as Figure 5 , Figure 6 , Figure 10As shown, the counterweight 311 of the vibrator assembly 31 has a groove corresponding to the boss 111 on the bottom 11 of the housing 1. At least part of the boss 111 is located in the groove, and the extension length of the groove along the second direction is greater than the extension length of the boss 111 along the second direction. It can be understood that this arrangement can further limit the excessive vibration amplitude of the vibrator assembly 31 along the second direction, and prevent the vibrator assembly 31 from colliding with the first magnetic circuit system 22 due to excessive vibration amplitude along the second direction, thereby affecting the sound output effect of the sound generating unit 2.

[0111] In one embodiment, the side portion 12 includes a first vertical wall 122 and a second vertical wall 123 arranged along a first direction. The end of the first vertical wall 122 away from the second vertical wall 123 is connected to the bottom 11. The end of the first vertical wall 122 adjacent to the second vertical wall 123 bends and extends toward the accommodating space 13 to form a limiting portion 121. The end of the second vertical wall 123 away from the first vertical wall 122 is connected to the outer periphery of the diaphragm assembly 211.

[0112] In this embodiment, as Figures 1 to 6 As shown, by setting the side portion 12 of the housing 1 as a first vertical wall 122 and a second vertical wall 123 arranged along a first direction, and bending and extending the first vertical wall 122 toward the accommodating space 13 to form a limiting portion 121, the limiting portion 121 formed by bending the first vertical wall 122 can limit the oscillator assembly 31 in the first direction, and the second vertical wall 123 can be used to support and install the diaphragm assembly 211, ensuring the vibration of the diaphragm assembly 211.

[0113] It is understood that the first vertical wall 122 and the second vertical wall 123 of the side portion 12 of the housing 1 can be bonded, welded, or integrally molded, etc., and are not limited here. Optionally, the first vertical wall 122 is a metal part and the second vertical wall 123 is a plastic part. In this embodiment, the first vertical wall 122 and the second vertical wall 123 are integrally injection molded.

[0114] In this embodiment, the first vertical wall 122 of the side portion 12 and the bottom portion 11 can be bonded, welded, or integrally formed, etc., and there is no limitation thereto. Optionally, the first vertical wall 122 and the bottom portion 11 are integrally formed structures.

[0115] Optionally, the thickness of the second vertical wall 123 perpendicular to the first direction is greater than the thickness of the first vertical wall 122 perpendicular to the first direction. Understandably, this arrangement allows the second vertical wall 123 to protrude from the first vertical wall 122 towards the receiving space 13, thereby using the protruding side of the second vertical wall 123 towards the receiving space 13 to limit the oscillator assembly 31 in the first direction.

[0116] In one embodiment, the diaphragm assembly 211 includes a diaphragm 2111 and a dome 2112 disposed at the center of the diaphragm 2111, and the outer periphery of the diaphragm 2111 is connected to the housing 1; the first vibration system 21 also includes a frame 214, one end of the frame 214 is connected to the dome 2112, and the other end of the frame 214 is connected to the voice coil 212 along a first direction.

[0117] In this embodiment, as Figures 3 to 6 , Figure 9 As shown, by setting the skeleton 214, the voice coil 212 can be connected to the diaphragm assembly 211, and the position of the voice coil 212 within the magnetic gap 223 can be adjusted, so that the voice coil 212 is in a suitable position within the magnetic gap 223.

[0118] Understandably, the diaphragm 2111 and the dome 2112 of the diaphragm assembly 211 can be integrated or separate, and no limitation is made here.

[0119] In this embodiment, as Figures 3 to 6 , Figure 9 As shown, the skeleton 214 includes a top wall 2141 and a side wall 2142 connected to the periphery of the top wall 2141. The top wall 2141 and the side wall 2142 enclose a cavity 2143. The top wall 2141 is connected to the dome 2112. The side wall 2142 extends along a first direction and is connected to the voice coil 212.

[0120] Understandably, connecting the top wall 2141 of the frame 214 to the dome 2112 of the diaphragm assembly 211 effectively increases the connection area and improves connection stability. To further increase the connection area between the top wall 2141 and the dome 2112 and improve connection stability, in this embodiment, the top wall 2141 extends along the surface of the dome 2112 to form an extension wall 2145. The extension wall 2145 increases the contact area between the frame 214 and the dome 2112, thereby improving the operational stability of the first vibration system 21. Furthermore, the voice coil 212 is connected using the side wall 2142 to improve connection stability. To further increase the connection area between the side wall 2142 and the voice coil 212 and improve connection stability, the end of the side wall 2142 away from the top wall 2141 is bent and extended to form a bent portion 2146, which is connected to the end of the voice coil 212. At the same time, the cavity 2143 formed by the top wall 2141 and the side wall 2142 is used to avoid and accommodate the first magnetic circuit system 22.

[0121] In this embodiment, as Figure 3 , Figure 5 , Figure 6 , Figure 9As shown, the sidewall 2142 is provided with a through hole 2144 connecting the cavity 2143. This through hole 2144 connects the cavity 2143 and the accommodating space 13, thereby ensuring unobstructed airflow on the side of the diaphragm assembly 211 facing the accommodating space 13. To further ensure air pressure balance within the accommodating space 13, the vibration sound-generating device 100 is also provided with a through hole 114 connecting the cavity 2143, which passes through the first magnetic circuit system 22 and the housing 1.

[0122] In the vibration sound-generating device 100 of the present invention, the diaphragm assembly 211 of the sound-generating unit 2 occupies the entire front side of the vibration sound-generating device 100, and the outer periphery of the diaphragm assembly 211 is fixed to the housing 1. The driving system (i.e., the first magnetic circuit system 22) of the sound-generating unit 2 is located at the center of the projection surface of the diaphragm assembly 211. The remaining space within the projection range of the diaphragm assembly 211 is occupied by the vibration unit 3, forming a vibration unit 3 with a hollowed-out center.

[0123] Understandably, the diaphragm assembly 211 of the sound-generating unit 2 vibrates in the Z direction. When the diaphragm assembly 211 vibrates outward from the sound-generating device 100, it requires a certain amount of space. When the diaphragm assembly 211 vibrates inward, the vibrator assembly 31 of the vibrating unit 3 needs to have a certain height clearance. This height clearance is achieved by hollowing out an annular space in the middle of the vibrator assembly 31 to avoid the first magnetic circuit system 22, thus preventing the stacking of the vibrating unit 3 and the sound-generating unit 2 in the first direction.

[0124] In this embodiment, since the diaphragm assembly 211 of the sound-generating unit 2 occupies the entire front of the vibration sound-generating device 100, its vibration area is the largest, thereby improving the sound-generating effect of the sound-generating unit 2. At the same time, the vibration space of the vibrator assembly 31 of the vibration unit 3 reasonably avoids the vibration space under the diaphragm assembly 211 and effectively utilizes the annular space within the projection of the diaphragm assembly 211, which can ensure the vibration feedback effect of the vibration unit 3.

[0125] The present invention also proposes an electronic device including the aforementioned vibration sound-generating device 100. The specific structure of the vibration sound-generating device 100 is as described in the foregoing embodiments. Since this electronic device adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0126] Understandably, the electronic device includes a device housing, which has a mounting cavity and a sound outlet hole communicating with the mounting cavity. The vibration sound generating device 100 is located in the mounting cavity of the device housing and forms a front sound cavity communicating with the sound outlet hole. The diaphragm assembly 211 of the vibration sound generating device 100 faces into the front sound cavity.

[0127] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vibration-generating sound device, characterized in that, The vibration sound-generating device includes: case; A sound-generating unit is disposed in the housing. The sound-generating unit includes a first vibration system vibrating along a first direction and a first magnetic circuit system disposed opposite to the first vibration system along the first direction. The first magnetic circuit system includes a magnetic yoke and a central magnetic part. The magnetic yoke includes a base plate and a side plate extending along the first direction toward the first vibration system. The central magnetic part is disposed on the base plate and spaced apart from the side plate to form a magnetic gap. The side plate includes a first side plate and a second side plate located on opposite sides of the central magnetic part along a second direction. The opposite ends of the first side plate and the second side plate are respectively spaced apart to form clearance gaps. The first vibration system includes a diaphragm assembly, a voice coil, and two centering supports. The voice coil is connected to the diaphragm assembly and is disposed corresponding to the magnetic gap. The two centering supports are respectively disposed corresponding to the two clearance gaps. One end of each centering support passes through the clearance gap and is connected to the voice coil. The other end of each centering support is connected to the housing. A vibration unit is disposed within the housing. The vibration unit includes an oscillator assembly suspended around the periphery of the sound-generating unit and stator assemblies located on opposite sides of the sound-generating unit. The stator assembly includes at least two drive coils disposed in the housing. The at least two drive coils are respectively located on both sides of the sound-generating unit along a second direction. The stator assembly drives the oscillator assembly to vibrate along the second direction. The first direction is perpendicular to the second direction. Wherein, the projections of the first magnetic circuit system and the vibration unit along the first direction are both located within the projection range of the diaphragm assembly along the first direction.

2. The vibration-generating sound device as described in claim 1, characterized in that, The housing forms an accommodating space with an opening, and the first magnetic circuit system and the vibration unit are both disposed within the accommodating space. The outer periphery of the diaphragm assembly is connected to the housing to cover the opening. The vibration sound-generating device is also provided with a through hole that connects to the accommodating space, and the through hole sequentially passes through the central magnetic part, the bottom plate part and the shell.

3. The vibration-generating sound device as described in claim 1, characterized in that, The central magnetic part includes a first central magnet, a central magnetic plate and a second central magnet stacked sequentially along the first direction, and the first central magnet is connected to the base plate. The first central magnet and the second central magnet are both magnetized along the first direction but in opposite directions.

4. The vibration-generating sound device as described in claim 1, characterized in that, The central magnetic part is cylindrical, and the first side plate and the second side plate are both semi-circular arcs and are arranged symmetrically.

5. The vibration-generating sound device as described in claim 1, characterized in that, The housing includes a bottom and a side portion disposed around the periphery of the bottom. The bottom and the side portion enclose an accommodating space with an opening. The first magnetic circuit system is disposed on the bottom and located within the accommodating space. The outer periphery of the diaphragm assembly is connected to the end of the side portion away from the bottom and covers the opening. There are two drive coils, which are spaced apart on the bottom and respectively located on both sides of the first magnetic circuit system along the second direction. The oscillator assembly is suspended and connected to the side portion and surrounds the outer periphery of the first magnetic circuit system. The bottom has a boss located between the first magnetic circuit system and the oscillator assembly, and the centering support is connected to the boss.

6. The vibration-generating sound device as described in claim 5, characterized in that, The housing also includes a first conductive element embedded in the boss, one end of the centering support is connected to the voice coil and electrically connected to the lead of the voice coil, and the other end of the centering support is connected to the boss and electrically connected to the first conductive element; And / or, the housing further includes a second conductive element embedded in the bottom, and the lead of the drive coil is electrically connected to the second conductive element; And / or, the bottom is integrally injection molded with the magnetic yoke.

7. The vibration-generating sound device as described in claim 1, characterized in that, The two centering supports are arranged at intervals along the third direction and are symmetrically arranged along the second direction. The first direction, the second direction and the third direction are arranged perpendicular to each other. And / or, each of the centering supports includes a first connecting portion, a second connecting portion, and a spring arm portion connecting the first connecting portion and the second connecting portion. The housing is provided with a boss located between the first magnetic circuit system and the oscillator assembly. The first connecting portion is connected to the boss, and the second connecting portion passes through the clearance gap and is connected to the voice coil in the magnetic gap.

8. The vibration-generating sound device as described in claim 1, characterized in that, The oscillator assembly includes: A counterweight, wherein the counterweight has a clearance space, the first magnetic circuit system is located within the clearance space, and the counterweight is suspended on the outer periphery of the first magnetic circuit system; and Two second magnetic circuit systems are disposed on the counterweight and are respectively located on both sides of the first magnetic circuit system along the second direction; There are two drive coils, and each of the second magnetic circuit systems is arranged opposite to one of the drive coils along the first direction.

9. The vibration-generating sound device as described in claim 8, characterized in that, Each of the second magnetic circuit systems includes a first magnet and a second magnet arranged adjacent to each other along the second direction, and each of the driving coils includes two long sides spaced apart and opposite each other along the second direction, the two long sides extending along the third direction, and the two long sides being opposite to and spaced apart from the first magnet and the second magnet, respectively; The first direction, the second direction, and the third direction are arranged perpendicularly to each other.

10. The vibration-generating sound device as described in claim 9, characterized in that, The counterweight is provided with a mounting slot for each of the second magnetic circuit systems, and each of the second magnetic circuit systems is disposed in one of the mounting slots; And / or, each of the second magnetic circuit systems further includes a first magnetic guide plate, which is disposed on the counterweight and located on the side of the first magnet and the second magnet facing away from the drive coil; And / or, both the first magnet and the second magnet are magnetized along the first direction but in opposite directions.

11. The vibration-generating sound device as described in claim 8, characterized in that, The oscillator assembly further includes two elastic elements, which are respectively disposed on both sides of the counterweight along the second direction. One end of each elastic element is connected to the counterweight, and the other end of each elastic element is connected to the housing, so that the counterweight is suspended on the outer periphery of the first magnetic circuit system. The two elastic elements are arranged in a centrally symmetrical manner about the central axis of the clearance space; and / or, each elastic element includes a deformation part and a first fixed end and a second fixed end connected to both ends of the deformation part, the first fixed end being connected to the counterweight and the second fixed end being connected to the housing.

12. The vibration-generating sound device as described in claim 1, characterized in that, A first buffer structure, which is buffer foam, is provided between the oscillator assembly and the housing. And / or, a second buffer structure is provided between the oscillator assembly and the first magnetic circuit system, the second buffer structure being buffer foam.

13. The vibration-generating sound device as described in claim 1, characterized in that, The diaphragm assembly includes a diaphragm and a dome located at the center of the diaphragm, and the outer periphery of the diaphragm is connected to the housing; The first vibration system further includes a frame, one end of which is connected to the dome, and the other end of which is connected to the voice coil along the first direction.

14. The vibration-generating sound device as described in claim 13, characterized in that, The frame includes a top wall and side walls connected to the periphery of the top wall. The top wall and the side walls enclose a cavity. The top wall is connected to the dome. The side walls extend along the first direction and are connected to the voice coil. The sidewall is provided with a through hole communicating with the cavity; and / or, the top wall extends along the surface of the dome to form an extension wall; and / or, the end of the sidewall away from the top wall is bent and extended to form a bent portion, the bent portion being connected to the end of the voice coil.

15. An electronic device, characterized in that, The electronic device includes a vibration-generating sound device as described in any one of claims 1 to 14.

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