Vibration sound production device and electronic device

Abstract

The application discloses a vibrating sound production device and electronic equipment. The vibrating sound production device comprises a shell, a magnetic circuit system, a first vibrating system and a second vibrating system. A center magnetic part and a side magnetic part define a magnetic gap. The center magnetic part comprises a plurality of first sub-center magnets distributed along a first direction. A voice coil of the first vibrating system is inserted into the magnetic gap. The second vibrating system comprises an elastic connecting piece and a vibrator assembly. The elastic connecting piece suspends the vibrator assembly in a mounting space. The vibrator assembly comprises a driving coil. Along a second direction, at least part of two long sides of the driving coil is arranged opposite to two adjacent first sub-center magnets, respectively. The driving coil is opposite to the center magnetic part. A gap part formed by the two adjacent first sub-center magnets has an extension component along the first direction and a third direction. The third direction is perpendicular to the first direction and the second direction, respectively. According to the vibrating sound production device, the structure is simple and compact, and has good sound production and vibration effects.

Description

Technical Field

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

[0002] Smart terminal devices, especially mobile phones, typically need to provide both audio and haptic feedback experiences. The audio experience comes from the sound-generating unit, while the haptic feedback comes from the vibration unit. One related technology proposes a vibration-generating module that integrates the sound-generating unit and the vibration unit into a single unit. In this module, the sound-generating unit and the vibration unit are separately configured as independent control units, and then stacked within the housing of the vibration-generating module. While this structure achieves integration of the sound-generating unit and the vibration unit, the vibration-generating module occupies too much assembly space, thus hindering the miniaturization and lightweight design of the terminal device. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a vibration sound-generating device, which has the advantages of simple and compact structure and good sound generation and vibration effects.

[0004] The present invention also proposes an electronic device having the above-mentioned vibration sound-generating device.

[0005] According to a first aspect of the present invention, a vibration-generating device includes: a housing defining an installation space; a magnetic circuit system including a central magnetic portion and peripheral magnetic portions outside the central magnetic portion, the central magnetic portion and the peripheral magnetic portions being spaced apart to define a magnetic gap, the central magnetic portion including a plurality of first sub-central magnets spaced apart along a first direction, the magnetization directions of two adjacent first sub-central magnets being opposite; a first vibration system and a second vibration system, the first vibration system and the second vibration system being disposed on opposite sides of the magnetic circuit system, the first vibration system vibrating along a second direction perpendicular to the first direction, the first vibration system including a diaphragm assembly and a voice coil, one end of the voice coil being connected to the diaphragm assembly, and the other end of the voice coil being connected to the diaphragm assembly. The second vibration system includes an elastic connector and an oscillator assembly. The two ends of the elastic connector are respectively connected to the oscillator assembly and the inner wall of the housing to suspend the oscillator assembly in the installation space. The oscillator assembly includes a counterweight and a drive coil disposed on the counterweight. The drive coil has two long sides arranged opposite each other. Along the second direction, at least a portion of the two long sides are respectively arranged opposite to two adjacent first sub-center magnets, and the drive coil is opposite to the central magnetic part. The two adjacent first sub-center magnets are spaced apart to form a gap portion. The gap portion has an extension component along the first direction and a third direction. The third direction is perpendicular to the first direction and the second direction, respectively.

[0006] According to a first aspect of the present invention, the vibration-generating device provides a central magnetic section with a plurality of first sub-central magnets spaced apart along a first direction. At least a portion of the two long sides of the drive coil along the second direction are respectively positioned opposite to two adjacent first sub-central magnets, and the drive coil is opposite to the central magnetic section. This allows the portion of the magnetic field in the central magnetic section with low utilization in the first vibration system to be used as the magnetic field of the second vibration system, thereby improving the magnetic field utilization of the central magnetic section, saving a magnetic circuit system, reducing production costs, and saving assembly space occupied by a magnetic circuit system. This satisfies the requirements for miniaturization and thinning of the vibration-generating device. Furthermore, the spacer formed by the spaced arrangement of two adjacent first sub-central magnets has extension components along the first and third directions, resulting in the oscillator assembly having movement components along both the first and third directions. That is, the magnetic circuit system drives the oscillator assembly to vibrate bidirectionally, thereby effectively improving the vibration sensation of the second vibration system.

[0007] According to some embodiments of the present invention, the extension direction of the long side has extension components along the first direction and the third direction.

[0008] According to some embodiments of the present invention, the long side extends along the third direction.

[0009] According to some embodiments of the present invention, the extension direction of the first sub-center magnet located at both ends near the side magnetic portion is parallel to the third direction.

[0010] According to some embodiments of the present invention, there are at least three first sub-center magnets, and two adjacent first sub-center magnets are spaced apart to form a spacer portion, and the number of drive coils is the same as the number of spacers.

[0011] According to some embodiments of the present invention, the side magnetic part includes a side magnet, and the side magnet and a plurality of first sub-center magnets are all magnetized along the second direction, and the magnetization directions between adjacent side magnets and first sub-center magnets and between two adjacent first sub-center magnets are opposite.

[0012] According to some embodiments of the present invention, the central magnetic part further includes a central magnetic guide plate, and the side of the plurality of first sub-central magnets away from the second vibration system is connected to the central magnetic guide plate.

[0013] According to some embodiments of the present invention, the magnetic circuit system further includes a magnetic yoke, the magnetic yoke including a body portion and a hollow hole disposed on the body portion, the side magnetic portion and the first sub-center magnets located at both ends are disposed on the body portion, and along the second direction, the hollow hole is at least partially opposite to the drive coil.

[0014] In some embodiments of the present invention, the projections of the other first sub-center magnets between the first sub-center magnets located at both ends along the second direction are all located inside the edge of the hollow hole.

[0015] In some embodiments of the present invention, a portion of the first sub-center magnet located at both ends is disposed on the main body, and another portion of the first sub-center magnet is disposed opposite to the hollow hole.

[0016] According to some embodiments of the present invention, the central magnetic part further includes a central magnetic guide plate, and the sides of the plurality of first sub-central magnets away from the second vibration system are all connected to the central magnetic guide plate. The magnetic circuit system further includes a magnetic guide yoke, the magnetic guide yoke includes a body part and a hollow hole provided in the body part, the side magnetic part is provided in the body part on the side close to the second vibration system, the central magnetic guide plate includes a support part and an extension part provided outside the support part, the extension part extends along the second direction, the two ends of the extension part are respectively connected to the support part and the body part, the support part is disposed opposite to the hollow hole, and the plurality of first sub-central magnets are all fixed to the support part.

[0017] In some embodiments of the present invention, along the third direction, the extension is located on opposite sides of the support, and the side magnetic portion is spaced apart from the extension to define a portion of the magnetic gap.

[0018] In some embodiments of the present invention, the projections of the plurality of first sub-central magnets along the second direction are all located inside the edge of the hollow hole.

[0019] According to some embodiments of the present invention, the side magnetic part includes a side magnet, and the central magnetic part further includes a second sub-central magnet disposed on both sides of a third direction of a plurality of first sub-central magnets. The third direction is perpendicular to the first direction and the second direction, respectively. The side magnet, the first sub-central magnet and the second sub-central magnet are all magnetized along the second direction. Along the first direction, the magnetization directions between adjacent side magnets and the first sub-central magnets and between two adjacent first sub-central magnets are opposite. Along the third direction, the magnetization directions between adjacent side magnets and the second sub-central magnets are opposite.

[0020] In some embodiments of the present invention, the central magnetic part further includes a central magnetic guide plate, and the sides of the plurality of first sub-central magnets and second sub-central magnets away from the second vibration system are all connected to the central magnetic guide plate. The magnetic circuit system further includes a magnetic guide yoke, the magnetic guide yoke includes a body part and a hollow hole provided in the body part, the side magnets and the second sub-central magnets are both provided in the body part, and along the second direction, the hollow hole is at least partially opposite to the drive coil.

[0021] In some embodiments of the present invention, the projections of the plurality of first sub-central magnets along the second direction are all located inside the edge of the hollow hole.

[0022] According to some embodiments of the present invention, the counterweight is provided with an assembly groove on the side near the magnetic circuit system, and the drive coil is embedded in the assembly groove.

[0023] In some embodiments of the present invention, the drive coil further includes two short sides disposed at both ends of the long side along its length, each short side being connected to the two long sides at both ends, the long side and the short side defining a central hole, and the counterweight further includes a fixing protrusion disposed in the assembly groove, the fixing protrusion passing through the central hole.

[0024] According to some embodiments of the present invention, the elastic connector is provided with a first elastic connecting portion extending along the first direction and a second elastic connecting portion extending along the third direction, the first elastic connecting portion being connected to the second elastic connecting portion, one of the first elastic connecting portion and the second elastic connecting portion being connected to the housing, and the other of the first elastic connecting portion and the second elastic connecting portion being connected to the oscillator assembly.

[0025] An electronic device according to a second aspect of the present invention includes a vibration-generating sound device according to the above-described embodiments of the present invention.

[0026] According to the second aspect of the present invention, the electronic device, by providing the above-mentioned vibration sound-generating device, has a compact structural design, occupies little assembly space, and has good sound generation and vibration effects, thereby meeting the requirements for lightweight and thin design of electronic devices, and also enabling electronic devices to have both good sound quality and vibration feedback effects, thereby enhancing the product market competitiveness of electronic devices.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the exploded structure of a vibration sound-generating device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the exploded structure of a vibration sound-generating device according to another embodiment of the present invention;

[0031] Figure 3 This is an exploded structural diagram of a vibration sound-generating device according to yet another embodiment of the present invention;

[0032] Figure 4 This is a vertical cross-sectional view of a vibration sound-generating device according to an embodiment of the present invention along a first direction;

[0033] Figure 5 This is a vertical cross-sectional view of a vibration sound-generating device according to another embodiment of the present invention along a first direction;

[0034] Figure 6 This is a vertical cross-sectional view of a vibration sound-generating device according to an embodiment of the present invention along a third direction;

[0035] Figure 7This is a vertical cross-sectional view of a vibration sound-generating device according to another embodiment of the present invention along a third direction;

[0036] Figure 8 This is a vertical cross-sectional view of a vibration sound-generating device according to another embodiment of the present invention along a third direction;

[0037] Figure 9 This is a schematic diagram showing the placement state of the drive coil according to an embodiment of the present invention;

[0038] Figure 10 This is a top view of the central magnet according to an embodiment of the present invention;

[0039] Figure 11 This is a top view of the central magnet according to another embodiment of the present invention.

[0040] Figure label:

[0041] Vibration sound generating device 100,

[0042] Casing 1,

[0043] Magnetic circuit system 2, central magnetic part 21, first sub-central magnet 211, second sub-central magnet 212, central magnetic guide plate 213, support part 2131, extension part 2132, side magnetic part 22, side magnet 221, side magnetic guide plate 222, first plate body 2221, second plate body 2222, recessed part 222a, magnetic gap 2a, interval part 2b, magnetic yoke 23, body part 231, hollow hole 232.

[0044] First vibration system 3, diaphragm assembly 31, diaphragm 311, dome 312, voice coil 32.

[0045] Second vibration system 4, elastic connector 41, first elastic connector 411, second elastic connector 412, vibrator assembly 42, counterweight 421, fixing protrusion 4211, assembly groove 421a, drive coil 422, long side 4221, short side 4222. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] The following is for reference. Figures 1-11 A vibration sound-generating device 100 according to a first aspect embodiment of the present invention is described in detail. The vibration sound-generating device 100 can be a speaker module that has both sound generation and vibration functions.

[0048] like Figures 1-8 As shown, the vibration sound-generating device 100 according to a first aspect embodiment of the present invention includes: a housing 1, a magnetic circuit system 2, a first vibration system 3, and a second vibration system 4.

[0049] like Figures 4-8 As shown, the housing 1 defines an installation space, and the magnetic circuit system 2 is disposed within the installation space. The first vibration system 3 and the second vibration system 4 can be disposed on opposite sides of the magnetic circuit system 2, respectively. The magnetic circuit system 2 may include a central magnetic part 21 and a side magnetic part 22 disposed outside the central magnetic part 21. The central magnetic part 21 and the side magnetic part 22 are spaced apart to define a magnetic gap 2a. The central magnetic part 21 includes a plurality of first sub-central magnets 211 spaced apart along a first direction, and the magnetization directions of two adjacent first sub-central magnets 211 are opposite.

[0050] The first vibration system 3 can vibrate along a second direction perpendicular to the first direction. The first vibration system 3 may include a diaphragm assembly 31 and a voice coil 32. One end of the voice coil 32 is connected to the diaphragm assembly 31, and the other end of the voice coil 32 is inserted into the magnetic gap 2a. For example, the first direction may be the horizontal x-direction, and the second direction may be the vertical z-direction. That is, the voice coil 32 can reciprocate along the vertical direction under the drive of the magnetic field force, thereby driving the diaphragm assembly 31 to vibrate and produce sound, realizing the sound-producing function of the vibration sound-producing device 100. In a specific example of the present invention, the diaphragm assembly 31 may include a diaphragm 311 and a dome 312. The diaphragm 311 is connected to the housing 1 or the magnetic circuit system 2, the dome 312 is disposed on the diaphragm 311, and the end of the voice coil 32 away from the magnetic circuit system 2 is connected to the dome 312.

[0051] like Figures 1-3 As shown, the second vibration system 4 may include an elastic connector 41 and an oscillator assembly 42. The two ends of the elastic connector 41 can be connected to the oscillator assembly 42 and the inner wall of the housing 1 respectively to suspend the oscillator assembly 42 within the installation space. The oscillator assembly 42 includes a drive coil 422, which has two opposing long sides 4221. Along the second direction, at least a portion of the two long sides 4221 is respectively positioned opposite to two adjacent first sub-center magnets 211, and the drive coil 422 is opposite to the central magnetic portion 21. The magnetic circuit system 2 drives the oscillator assembly 42 to move. The two adjacent first sub-center magnets 211 are spaced apart to form a spacer portion 2b, which may have extension components along the first direction and a third direction.

[0052] Specifically, since the elastic connector 41 suspends the vibrator assembly 42 in the installation space, when the second vibration system 4 is working, current flows through the drive coil 422. Under the action of the magnetic field force of the magnetic circuit system 2, the drive coil 422 can drive the counterweight 421 to reciprocate, thereby generating a vibration sensation and realizing the vibration function of the vibration sound generating device 100.

[0053] like Figures 10-11 As shown, the drive coil 422 may further include two oppositely arranged short sides 4222, which are located on both sides of the length direction of the long side 4221, with each end of the short side 4222 connected to the long side 4221. Therefore, according to the magnetic force formula BIL for the drive coil 422, since the spacer 2b has extension components along the first and third directions, i.e., a portion of the magnetic field acts on the long side 4221 and another portion acts on the short side 4222, the long side 4221 can be subjected to a magnetic force in the first direction, and the short side 4222 can be subjected to a magnetic force in the third direction, thereby enabling bidirectional vibration of the oscillator assembly 42. That is, the direction of motion of the oscillator assembly 42 has motion components along the first and third directions. For example, the first direction can be the horizontal x-direction, the second direction can be the vertical z-direction, and the third direction can be the horizontal y-direction. The bidirectional vibration of the second vibration system 4 can be achieved, enhancing the vibration sensation of the second vibration system 4. Optionally, there can be multiple drive coils 422, which can be arranged at intervals, and the long sides 4221 of each drive coil 422 are arranged in parallel.

[0054] It is understandable that the magnetic field utilization rate of the central magnetic circuit portion of a loudspeaker is typically low. This invention addresses this by arranging a plurality of first sub-central magnets 211 spaced apart along a first direction in the central magnetic section 21. At least a portion of the two long sides 4221 of the drive coil 422 along the second direction are respectively positioned opposite to two adjacent first sub-central magnets 211, and the drive coil 422 is opposite to the central magnetic section 21. This allows the portion of the magnetic field in the central magnetic section 21 with low utilization in the first vibration system 3 to be used as the magnetic field of the second vibration system 4, thereby improving the magnetic field utilization rate of the central magnetic section 21, saving one set of magnetic circuit system 2, reducing production costs, and saving the assembly space occupied by one set of magnetic circuit system 2. This allows for the miniaturization and thinning design of the vibration sound-generating device 100. Furthermore, the movement direction of the vibrator assembly 42 has movement components along both the first and third directions, meaning the magnetic circuit system 2 can drive the vibrator assembly 42 to vibrate bidirectionally, enhancing the vibration feel of the second vibration system 4.

[0055] As can be seen from the above analysis, the first vibration system 3 and the second vibration system 4 in this invention share a single magnetic circuit system 2. Sound generation and vibration functions can be achieved through this single magnetic circuit system 2, and the structure is simple and compact, meeting the requirements of miniaturization and lightweighting. Furthermore, the magnetic circuit system 2 can drive the vibrator assembly 42 to vibrate bidirectionally, enhancing the vibration feel of the second vibration system 4.

[0056] According to the first aspect of the present invention, the vibration sound-generating device 100 is provided with a plurality of first sub-central magnets 211 spaced apart along a first direction in the central magnetic part 21. At least a portion of the two long sides 4221 of the drive coil 422 along the second direction are respectively arranged opposite to two adjacent first sub-central magnets 211, and the drive coil 422 is opposite to the central magnetic part 21. This allows the portion of the magnetic field of the central magnetic part 21 that has low utilization in the first vibration system 3 to be used as the magnetic field of the second vibration system 4, thereby improving the magnetic field utilization of the central magnetic part 21, saving a set of magnetic circuit system 2, reducing production costs, and saving the assembly space occupied by a set of magnetic circuit system 2. This allows for the miniaturization and thinning design of the vibration sound-generating device 100. Moreover, the spacer portion 2b formed by the spaced arrangement of two adjacent first sub-central magnets 211 has extension components along the first direction and a third direction, so that the movement direction of the oscillator assembly 42 has movement components along the first direction and a third direction. That is, the magnetic circuit system 2 drives the oscillator assembly 42 to vibrate bidirectionally, thereby effectively improving the vibration sensation of the second vibration system 4.

[0057] like Figure 9 As shown, according to some embodiments of the present invention, the extension direction of the long side 4221 may have extension components along the first direction and the third direction. Thus, according to the formula BIL, L, which is the extension direction of the long side 4221, the long side 4221 can be subjected to magnetic forces along the first direction and the third direction, thereby realizing bidirectional vibration of the oscillator assembly 42.

[0058] In some embodiments of the present invention, the extending direction of the long side 4221 is the same as the extending direction of the spacer 2b, that is, along the second direction, the two long sides 4221 of the drive coil 422 are opposite to the two adjacent first sub-center magnets 211. Of course, the placement of the drive coil 422 is not limited to this. In other embodiments of the present invention, the long side 4221 may also extend along a third direction, that is, the extending direction of the long side 4221 is different from the extending direction of the spacer 2b. Both of the above methods can achieve bidirectional vibration of the oscillator assembly 42, and can be selected according to actual usage requirements.

[0059] like Figure 11As shown, in some embodiments of the present invention, along the first direction, the extension direction of the first sub-center magnet 211 located at both ends near the side magnetic part 22 is parallel to the third direction. Thus, the side of the first sub-center magnet 211 located at both ends near the side magnetic part 22 is parallel to the extension direction of the side magnetic part 22, thereby forming a regular annular magnetic gap 2a. This ensures that the magnetic force acts evenly on the four sidewalls of the voice coil 32, ensuring that the voice coil 32 is subjected to stable force and preventing polarization.

[0060] like Figures 4-5 As shown, according to some embodiments of the present invention, there are at least three first sub-center magnets 211. Two adjacent first sub-center magnets 211 are spaced apart to form a spacer portion 2b. The number of drive coils 422 is the same as the number of spacer portions 2b. Specifically, the drive coils 422 can be flattened, with their two long sides 4221 located on opposite sides of the central hole. The number of drive coils 422 is the same as the number of spacer portions 2b, ensuring that a drive coil 422 is provided between each pair of adjacent first sub-center magnets 211. Thus, with the above arrangement, each drive coil 422 corresponds to a pair of spaced-apart first sub-center magnets 211. The first long side 4221 and the second long side 4221 can sufficiently cut magnetic field lines, thereby improving the vibration effect of the oscillator assembly 42.

[0061] like Figures 1-8 As shown, according to some embodiments of the present invention, the side magnet portion 22 may include a side magnet 221. The side magnet 221 and a plurality of first sub-center magnets 211 are all magnetized along a second direction, and the magnetization directions between adjacent side magnets 221 and first sub-center magnets 211, as well as between two adjacent first sub-center magnets 211, are opposite. For example, the second direction may be the vertical z-direction, that is, the side magnet 221 and a plurality of first sub-center magnets 211 are all magnetized in the vertical direction, the magnetization between adjacent side magnets 221 and first sub-center magnets 211, as well as between one of two adjacent first sub-center magnets 211, is in the direction from top to bottom, and the magnetization between adjacent side magnets 221 and first sub-center magnets 211, as well as between the other of two adjacent first sub-center magnets 211, is in the direction from bottom to top. Therefore, through the above-mentioned arrangement, the voice coil 32 can fully cut the magnetic field lines in the magnetic gap 2a formed between the side magnetic part 22 and the central magnetic part 21, and the drive coil 422 can fully cut the magnetic field lines in the interval 2b formed by the two adjacent first sub-central magnets 211, thus ensuring the sound generation and vibration effect of the vibration sound generating device 100.

[0062] like Figures 4-5As shown, according to some embodiments of the present invention, the central magnetic part 21 further includes a central magnetic guide plate 213. The side of the plurality of first sub-central magnets 211 away from the second vibration system 4 is connected to the central magnetic guide plate 213. The central magnetic guide plate 213 can not only concentrate magnetic field lines, but also assemble the plurality of first sub-central magnets 211 together, which facilitates the installation and fixing of the plurality of first sub-central magnets 211.

[0063] like Figure 4 As shown, according to some embodiments of the present invention, the magnetic circuit system 2 may further include a magnetic yoke 23. The magnetic yoke 23 includes a body portion 231 and a hollow hole 232 provided in the body portion 231. The side magnetic portion 22 and the first sub-central magnets 211 located at both ends are both provided in the body portion 231. Along the second direction, the hollow hole 232 is at least partially opposite to the drive coil 422. Specifically, one end of the plurality of first sub-central magnets 211 can be connected to the central magnetic guide plate 213, and the other end of the first sub-central magnets 211 located at both ends is fixed to the body portion 231. Thus, the magnetic yoke 23 can not only fix the side magnetic portion 22 and the central magnetic portion 21, but also play a role in focusing the magnetism, which can ensure the magnetic field strength corresponding to the first vibration system 3. By providing the hollow hole 232 on the body portion 231, the hollow hole 232 can be opposite to part of the drive coil 422 or opposite to the entire drive coil 422, which can ensure that the drive coil 422 can smoothly cut the magnetic field lines, thereby ensuring the vibration effect of the second vibration system 4.

[0064] Optionally, there can be multiple drive coils 422 and one cutout hole 232. The cutout hole 232 is correspondingly set with multiple drive coils 422, which simplifies the processing procedure of the cutout hole 232 and improves processing efficiency. Optionally, there can be multiple drive coils 422 and multiple cutout holes 232, with multiple cutout holes 232 corresponding one-to-one with multiple drive coils 422. This can relatively reduce the opening area of ​​the magnetic yoke 23, thereby not only improving the structural strength of the magnetic yoke 23, but also improving the magnetic focusing effect of the magnetic yoke 23.

[0065] like Figure 4 As shown, in some embodiments of the present invention, the projections of the other first sub-center magnets 211 between the first sub-center magnets 211 located at both ends along the second direction are all located inside the edge of the hollow hole 232, thereby ensuring the number of magnetic field lines passing through the hollow hole 232, and thus ensuring the vibration effect of the second vibration system 4.

[0066] Furthermore, along the second direction, the other first sub-center magnets 211 located at both ends extend into the hollow hole 232, thereby reducing the distance between the central magnetic part 21 and the drive coil 422, thereby increasing the intensity of the magnetic field lines acting on the drive coil 422, and thus improving the vibration effect of the second vibration system 4.

[0067] In some embodiments of the present invention, a portion of the first sub-center magnet 211 located at both ends may be disposed on the body portion 231, and the other portion of the first sub-center magnet 211 may be disposed opposite to the hollow hole 232, thereby ensuring the number of magnetic field lines passing through the hollow hole 232, thereby ensuring the vibration effect of the second vibration system 4.

[0068] The following is for reference. Figure 1 , Figure 4 and Figure 6 A detailed description of a vibration-generating sound device 100 according to a specific embodiment of the present invention is provided.

[0069] like Figure 1 and Figure 4 As shown, the vibration sound-generating device 100 includes: a housing 1, a magnetic circuit system 2, a first vibration system 3, and a second vibration system 4.

[0070] The magnetic circuit system 2 is disposed within the installation space defined by the housing 1, and the first vibration system 3 and the second vibration system 4 are respectively disposed on opposite sides of the magnetic circuit system 2. The magnetic circuit system 2 includes a magnetic yoke 23 and a central magnetic part 21 and a side magnetic part 22 disposed on the magnetic yoke 23. The side magnetic part 22 is disposed outside the central magnetic part 21, and the central magnetic part 21 and the side magnetic part 22 are spaced apart to define a magnetic gap 2a. The central magnetic part 21 includes three first sub-central magnets 211 and a central magnetic guide plate 213. The three first sub-central magnets 211 are spaced apart along a first direction (horizontal x direction). The end of each first sub-central magnet 211 away from the second vibration system 4 is connected to the central magnetic guide plate 213. Two adjacent first sub-central magnets 211 are spaced apart to form a spacer 2b, and the spacer 2b has an extension component along the first direction and a third direction. The side magnet section 22 includes a side magnet 221 and a side magnetic plate 222 disposed on the side of the side magnet 221 away from the second vibration system 4. The side magnet 221 and a plurality of first sub-center magnets 211 are all magnetized along the second direction, and the magnetization directions between adjacent side magnets 221 and first sub-center magnets 211 and between two adjacent first sub-center magnets 211 are opposite.

[0071] The magnetic yoke 23 includes a body portion 231 and a hollow hole 232 provided in the body portion 231. The side magnet 221 and the first sub-center magnet 211 located at both ends are both provided in the body portion 231. Along the second direction (vertical z direction), the first sub-center magnet 211 located in the middle extends into the hollow hole 232.

[0072] The first vibration system 3 vibrates along a second direction. The first vibration system 3 includes a diaphragm assembly 31 and a voice coil 32. The diaphragm assembly 31 includes a diaphragm 311 and a dome 312 disposed on the diaphragm 311. One end of the voice coil 32 is fixed to the dome 312, and the other end of the voice coil 32 is inserted into the magnetic gap 2a. The side magnetic plate 222 includes a horizontally extending first plate 2221 and a vertically extending second plate 2222. The first plate 2221 is disposed on the side of the side magnet 221 away from the second vibration system 4. One end of the second plate 2222 is connected to the first plate 2221, and the other end of the second plate 2222 extends along the second direction. Both ends of the diaphragm 311 are fixed to the second plate 2222. The folded portion of the diaphragm 311 extends along the second direction towards the side magnet 22. The first plate 2221 has a recess 222a corresponding to the folded portion.

[0073] The second vibration system 4 vibrates along a first direction. The second vibration system 4 includes an elastic connector 41 and an oscillator assembly 42. The two ends of the elastic connector 41 can be connected to the oscillator assembly 42 and the inner wall of the housing 1 respectively to suspend the oscillator assembly 42 within the installation space. The oscillator assembly 42 includes a counterweight 421 and two drive coils 422 disposed on the counterweight 421. Each drive coil 422 has two opposing long sides 4221, each long side 4221 having an extension component along the first direction and a third direction (horizontal y-direction). Along the second direction, at least a portion of the two long sides 4221 are respectively positioned opposite two adjacent first sub-center magnets 211, and the drive coils 422 are opposite the central magnetic part 21.

[0074] Specifically, when the vibration sound-generating device 100 is working, the voice coil 32 moves by cutting the magnetic field lines within the magnetic gap 2a after current is passed through it, thereby driving the diaphragm assembly 31 to vibrate and produce sound. After current is passed through the drive coil 422, it moves by cutting the magnetic field lines within the interval 2b. The direction of motion of the vibrator assembly 42 has motion components along the first direction and the third direction, that is, the magnetic circuit system 2 can drive the vibrator assembly 42 to vibrate bidirectionally, thereby enhancing the vibration of the second vibration system 4.

[0075] like Figure 2 and Figure 8As shown, according to some embodiments of the present invention, the central magnetic part 21 may further include a central magnetic guide plate 213. The side of the plurality of first sub-central magnets 211 away from the second vibration system 4 is connected to the central magnetic guide plate 213. The magnetic circuit system 2 also includes a magnetic guide yoke 23. The magnetic guide yoke 23 includes a body part 231 and a hollow hole 232 provided in the body part 231. The side magnetic part 22 is provided in the body part 231 on the side close to the second vibration system 4. The central magnetic guide plate 213 may include a support part 2131 and an extension part 2132 provided outside the support part 2131. The extension part 2132 extends along the second direction. The two ends of the extension part 2132 are respectively connected to the support part 2131 and the body part 231. The support part 2131 and the hollow hole 232 are arranged opposite to each other. The plurality of first sub-central magnets 211 are all fixed to the support part 2131.

[0076] Specifically, the central magnetic guide plate 213 not only serves to concentrate magnetic field lines but also assembles multiple first sub-central magnets 211 together. The central magnetic guide plate 213 includes a support portion 2131 extending along a first direction and an extension portion 2132 extending along a second direction. One end of each of the multiple first sub-central magnets 211 can be connected to the support portion 2131. The two ends of the extension portion 2132 are respectively connected to the support portion 2131 and the extension portion 2132. Thus, the magnetic guide yoke 23 not only supports the side magnetic portion 22 but also supports the central magnetic portion 21 through the extension portion 2132. A perforated hole 232 is provided on the body portion 231 of the magnetic guide yoke 23. The other end of each of the multiple first sub-central magnets 211 can be opposite the perforation. The perforated hole 232 can be opposite a portion of the drive coil 422 or the entire drive coil 422, thereby ensuring that the drive coil 422 can smoothly cut the magnetic field lines, thus ensuring the vibration effect of the second vibration system 4.

[0077] like Figure 2 and Figure 8 As shown, in some embodiments of the present invention, along a third direction perpendicular to the first and second directions respectively, the extension portion 2132 is located on opposite sides of the support portion 2131, and the side magnetic portion 22 is spaced apart from the extension portion 2132 to define a portion of the magnetic gap 2a. Specifically, the first direction and the third direction can be located in the same horizontal plane. For example, the first direction can be the horizontal x-direction, the third direction can be the horizontal y-direction, and the second direction can be the vertical z-direction. There can be two extension portions 2132, which can be located on both sides of the third direction of the support portion 2131, thereby connecting the support portion 2131 and the magnetic yoke 23 together, resulting in a relatively simple structural design. The side magnetic portion 22 can be spaced apart from the extension portion 2132 to define a portion of the magnetic gap 2a, and the side magnetic portion 22 can also be spaced apart from the first sub-center magnet 211 and the central magnetic plate 213 located at both ends to define another portion of the magnetic gap 2a.

[0078] In some embodiments of the present invention, the projections of the plurality of first sub-central magnets 211 along the second direction are all located inside the edge of the hollow hole 232, thereby ensuring the number of magnetic field lines passing through the hollow hole 232, and thus ensuring the vibration effect of the second vibration system 4.

[0079] Furthermore, along the second direction, multiple first sub-central magnets 211 extend into the hollow hole 232, thereby reducing the distance between the central magnetic part 21 and the drive coil 422, thereby increasing the intensity of the magnetic field lines acting on the drive coil 422, and thus improving the vibration effect of the second vibration system 4.

[0080] The following is for reference. Figure 2 , Figure 5 and Figure 8 A detailed description of a vibration-generating sound device 100 according to a specific embodiment of the present invention is provided.

[0081] like Figure 2 , Figure 5 and Figure 8 As shown, the vibration sound-generating device 100 includes: a housing 1, a magnetic circuit system 2, a first vibration system 3, and a second vibration system 4.

[0082] The magnetic circuit system 2 is disposed within the installation space defined by the housing 1, and the first vibration system 3 and the second vibration system 4 are respectively disposed on opposite sides of the magnetic circuit system 2. The magnetic circuit system 2 includes a magnetic yoke 23 and a central magnetic part 21 and a side magnetic part 22 disposed on the magnetic yoke 23. The side magnetic part 22 is disposed outside the central magnetic part 21, and the central magnetic part 21 and the side magnetic part 22 are spaced apart to define a magnetic gap 2a.

[0083] The central magnetic section 21 includes three first sub-central magnets 211 and a central magnetic guide plate 213. The central magnetic guide plate 213 includes a support section 2131 extending along a first direction (horizontal x-direction) and an extension section 2132 extending along a second direction (vertical z-direction). The two ends of the extension section 2132 are respectively connected to the support section 2131 and the extension section 2132. There are two extension sections 2132, which are located at the two ends of the support section 2131 in a third direction (horizontal y-direction). The three first sub-central magnets 211 are spaced apart along the first direction. The end of each first sub-central magnet 211 away from the second vibration system 4 is connected to the support section 2131. Two adjacent first sub-central magnets 211 are spaced apart to form a spacer section 2b, which has extension components along the first direction and the third direction. The side magnet section 22 includes a side magnet 221 and a side magnetic guide plate 222 disposed on the side of the side magnet 221 away from the second vibration system 4. The side magnet 221 and the plurality of first sub-center magnets 211 are all magnetized along the second direction, and the magnetization directions between adjacent side magnets 221 and first sub-center magnets 211, as well as between two adjacent first sub-center magnets 211, are opposite. The magnetic guide yoke 23 includes a body section 231 and a hollow hole 232 disposed in the body section 231. The side magnet 221 is disposed in the body section 231, and the two ends of the extension section 2132 are respectively connected to the support section 2131 and the body section 231. Along the second direction, the plurality of first sub-center magnets 211 are opposite to the hollow hole 232.

[0084] The first vibration system 3 vibrates along a second direction. The first vibration system 3 includes a diaphragm assembly 31 and a voice coil 32. The diaphragm assembly 31 includes a diaphragm 311 and a dome 312 disposed on the diaphragm 311. One end of the voice coil 32 is fixed to the dome 312, and the other end of the voice coil 32 is inserted into the magnetic gap 2a. The side magnetic plate 222 includes a horizontally extending first plate 2221 and a vertically extending second plate 2222. The first plate 2221 is disposed on the side of the side magnet 221 away from the second vibration system 4. One end of the second plate 2222 is connected to the first plate 2221, and the other end of the second plate 2222 extends along the second direction. Both ends of the diaphragm 311 are fixed to the second plate 2222. The folded portion of the diaphragm 311 extends along the second direction towards the side magnet 22. The first plate 2221 has a recess 222a corresponding to the folded portion.

[0085] The second vibration system 4 vibrates along a first direction. The second vibration system 4 includes an elastic connector 41 and an oscillator assembly 42. The two ends of the elastic connector 41 can be connected to the oscillator assembly 42 and the inner wall of the housing 1 respectively to suspend the oscillator assembly 42 within the installation space. The oscillator assembly 42 includes a counterweight 421 and two drive coils 422 disposed on the counterweight 421. Each drive coil 422 has two opposing long sides 4221, each long side 4221 having an extension component along the first direction and a third direction (horizontal y-direction). Along the second direction, at least a portion of the two long sides 4221 are respectively positioned opposite two adjacent first sub-center magnets 211, and the drive coils 422 are opposite the central magnetic part 21.

[0086] Specifically, when the vibration sound-generating device 100 is working, the voice coil 32 moves by cutting the magnetic field lines within the magnetic gap 2a after current is passed through it, thereby driving the diaphragm assembly 31 to vibrate and produce sound. After current is passed through the drive coil 422, it moves by cutting the magnetic field lines within the interval 2b. The direction of motion of the vibrator assembly 42 has motion components along the first direction and the third direction, that is, the magnetic circuit system 2 can drive the vibrator assembly 42 to vibrate bidirectionally, thereby enhancing the vibration of the second vibration system 4.

[0087] like Figure 3 and Figure 7 As shown, according to some embodiments of the present invention, the side magnetic part 22 may include a side magnet 221, and the central magnetic part 21 may also include a second sub-central magnet 212 disposed on both sides of a third direction of a plurality of first sub-central magnets 211. The third direction is perpendicular to the first direction and the second direction, respectively. The side magnet 221, the first sub-central magnet 211 and the second sub-central magnet 212 are all magnetized along the second direction. Along the first direction, the magnetization directions between adjacent side magnets 221 and the first sub-central magnet 211 and between two adjacent first sub-central magnets 211 are opposite. Along the third direction, the magnetization directions between adjacent side magnets 221 and the second sub-central magnet 212 are opposite.

[0088] Specifically, the first direction and the third direction can be located in the same horizontal plane. For example, the first direction can be the horizontal x-direction, the third direction can be the horizontal y-direction, and the second direction can be the vertical z-direction. The central magnetic part 21 includes a plurality of first sub-central magnets 211 spaced apart along the first direction and second sub-central magnets 212 spaced apart along the second direction. The side magnets 221, the first sub-central magnets 211, and the second sub-central magnets 212 are all magnetized along the second direction, for example, the vertical z-direction. Along the first direction, adjacent side magnets 221 and first sub-central magnets 211, as well as one of two adjacent first sub-central magnets 211, are magnetized in a downward direction, while adjacent side magnets 221 and one of two adjacent first sub-central magnets 211 are magnetized in a downward direction. Along the third direction, one of the adjacent side magnet 221 and the second sub-center magnet 212 is magnetized in a downward direction, and the other of the adjacent side magnet 221 and the second sub-center magnet 212 is magnetized in a downward direction.

[0089] Therefore, through the above-mentioned arrangement, the voice coil 32 can fully cut the magnetic field lines in the magnetic gap 2a formed between the side magnetic part 22 and the central magnetic part 21, and the drive coil 422 can fully cut the magnetic field lines in the interval 2b formed by the two adjacent first sub-central magnets 211, thus ensuring the sound generation and vibration effect of the vibration sound generating device 100.

[0090] like Figure 7 As shown, in some embodiments of the present invention, the central magnetic part 217 further includes a central magnetic guide plate 213. The sides of the plurality of first sub-central magnets 211 and second sub-central magnets 212 away from the second vibration system 4 are all connected to the central magnetic guide plate 213. The magnetic circuit system 2 further includes a magnetic guide yoke 23. The magnetic guide yoke 23 includes a body part 231 and a hollow hole 232 provided in the body part 231. The side magnets 221 and the second sub-central magnets 212 are both provided in the body part 231. Along the second direction, the hollow hole 232 is at least partially opposite to the drive coil 422.

[0091] Specifically, the central magnetic plate 213 not only concentrates magnetic field lines but also assembles multiple first sub-central magnets 211 and second sub-central magnets 212 together. The side magnets 221 and second sub-central magnets 212 can both be fixed to the body 231 of the magnetic yoke 23. This allows the magnetic yoke 23 to support the central magnetic part 21 and the side magnetic part 22, while also concentrating the magnetism to ensure the magnetic field strength of the corresponding first vibration system 3. The body 231 of the magnetic yoke 23 has a perforated hole 232, which can be opposite to a portion of the drive coil 422 or the entire drive coil 422. This ensures that the drive coil 422 can smoothly cut the magnetic field lines, thereby ensuring the vibration effect of the second vibration system 4.

[0092] In some embodiments of the present invention, the projections of the plurality of first sub-center magnets 211 along the second direction can all be located inside the edge of the hollow hole 232, thereby ensuring the number of magnetic field lines passing through the hollow hole 232, and thus ensuring the vibration effect of the second vibration system 4.

[0093] Furthermore, along the second direction, multiple first sub-central magnets 211 extend into the hollow hole 232, thereby reducing the distance between the central magnetic part 21 and the drive coil 422, thereby increasing the intensity of the magnetic field lines acting on the drive coil 422, and thus improving the vibration effect of the second vibration system 4.

[0094] Furthermore, there can be multiple drive coils 422 and one cutout hole 232. The cutout hole 232 is set in correspondence with multiple drive coils 422, which simplifies the processing procedure of the cutout hole 232 and improves processing efficiency. Of course, there can also be multiple drive coils 422 and multiple cutout holes 232, with multiple cutout holes 232 corresponding one-to-one with multiple drive coils 422. This can relatively reduce the opening area of ​​the magnetic yoke 23, thereby improving the magnetic focusing effect and structural strength of the magnetic yoke 23.

[0095] The following is for reference. Figure 3 , Figure 5 and Figure 7 A detailed description of a vibration-generating sound device 100 according to a specific embodiment of the present invention is provided.

[0096] like Figure 5 , Figure 5 and Figure 7 As shown, the vibration sound-generating device 100 includes: a housing 1, a magnetic circuit system 2, a first vibration system 3, and a second vibration system 4.

[0097] The magnetic circuit system 2 is disposed within the installation space defined by the housing 1, and the first vibration system 3 and the second vibration system 4 are respectively disposed on opposite sides of the magnetic circuit system 2. The magnetic circuit system 2 includes a magnetic yoke 23 and a central magnetic part 21 and a side magnetic part 22 disposed on the magnetic yoke 23. The side magnetic part 22 is disposed outside the central magnetic part 21, and the central magnetic part 21 and the side magnetic part 22 are spaced apart to define a magnetic gap 2a.

[0098] The central magnetic section 21 includes three first sub-central magnets 211, two second sub-central magnets 212, and a central magnetic guide plate 213. The three first sub-central magnets 211 are spaced apart along a first direction (horizontal x-direction), and the spacer portion 2b has an extension component along the first direction and a third direction. The two second sub-central magnets 212 are disposed on both sides of the three first sub-central magnets 211 in a third direction (horizontal y-direction). The end of each first sub-central magnet 211 and second sub-central magnet 212 away from the second vibration system 4 is connected to the support portion 2131. Adjacent first sub-central magnets 211 are spaced apart to form the spacer portion 2b. The side magnetic section 22 includes side magnets 221 and a side magnetic guide plate 222 disposed on the side of the side magnets 221 away from the second vibration system 4. The magnetic yoke 23 includes a body portion 231 and a hollow hole 232 disposed in the body portion 231. The side magnets 221 and the second sub-central magnets 212 are both disposed in the body portion 231. Along the second direction (vertical z-direction), multiple first sub-center magnets 211 are opposite to the hollow holes 232. Among them, the side magnets 221, the first sub-center magnets 211 and the second sub-center magnets 212 are all magnetized along the second direction. Along the first direction, the magnetization directions between adjacent side magnets 221 and first sub-center magnets 211, as well as between two adjacent first sub-center magnets 211, are opposite. Along the third direction, the magnetization directions between adjacent side magnets 221 and second sub-center magnets 212 are opposite.

[0099] The first vibration system 3 vibrates along a second direction. The first vibration system 3 includes a diaphragm assembly 31 and a voice coil 32. The diaphragm assembly 31 includes a diaphragm 311 and a dome 312 disposed on the diaphragm 311. One end of the voice coil 32 is fixed to the dome 312, and the other end of the voice coil 32 is inserted into the magnetic gap 2a. The side magnetic plate 222 includes a horizontally extending first plate 2221 and a vertically extending second plate 2222. The first plate 2221 is disposed on the side of the side magnet 221 away from the second vibration system 4. One end of the second plate 2222 is connected to the first plate 2221, and the other end of the second plate 2222 extends along the second direction. Both ends of the diaphragm 311 are fixed to the second plate 2222. The folded portion of the diaphragm 311 extends along the second direction towards the side magnet 22. The first plate 2221 has a recess 222a corresponding to the folded portion.

[0100] The second vibration system 4 vibrates along a first direction. The second vibration system 4 includes an elastic connector 41 and an oscillator assembly 42. The two ends of the elastic connector 41 can be connected to the oscillator assembly 42 and the inner wall of the housing 1 respectively to suspend the oscillator assembly 42 within the installation space. The oscillator assembly 42 includes a counterweight 421 and two drive coils 422 disposed on the counterweight 421. Each drive coil 422 has two opposing long sides 4221, each long side 4221 having an extension component along the first direction and a third direction (horizontal y-direction). Along the second direction, at least a portion of the two long sides 4221 are respectively positioned opposite two adjacent first sub-center magnets 211, and the drive coils 422 are opposite the central magnetic part 21.

[0101] Specifically, when the vibration sound-generating device 100 is working, the voice coil 32 moves by cutting the magnetic field lines within the magnetic gap 2a after current is passed through it, thereby driving the diaphragm assembly 31 to vibrate and produce sound. After current is passed through the drive coil 422, it moves by cutting the magnetic field lines within the interval 2b. The direction of motion of the vibrator assembly 42 has motion components along the first direction and the third direction, that is, the magnetic circuit system 2 can drive the vibrator assembly 42 to vibrate bidirectionally, thereby enhancing the vibration of the second vibration system 4.

[0102] like Figures 1-3 As shown, according to some embodiments of the present invention, the elastic connector 41 is provided with a first elastic connecting portion 411 extending along a first direction (horizontal x direction) and a second elastic connecting portion 412 extending along a third direction (horizontal y direction). The first elastic connecting portion 411 is connected to the second elastic connecting portion 412. One of the first elastic connecting portion 411 and the second elastic connecting portion 412 is connected to the housing 1, and the other of the first elastic connecting portion 411 and the second elastic connecting portion 412 is connected to the oscillator assembly 42. Thus, when the oscillator assembly 42 vibrates in both directions, the first elastic connecting portion 411 can buffer the vibration assembly in the first direction, and the second elastic connecting portion 412 can buffer the vibration assembly in the third direction, thereby ensuring the smooth operation of the second vibration system 4.

[0103] like Figures 1-3 As shown, in some specific embodiments of the present invention, the counterweight 421 has an assembly groove 421a on the side near the magnetic circuit system 2, and the drive coil 422 is embedded in the assembly groove 421a, thereby making the structure of the oscillator assembly 42 more compact. Optionally, a fixing adhesive can be provided in the assembly groove 421a, and the drive coil 422 can be fixed in the assembly groove 421a by the fixing adhesive. It should be noted that the structural design of the counterweight 421 is not limited to this. For example, the counterweight 421 may not have an assembly groove 421a, and the drive coil 422 may be bonded to the outer surface of the counterweight 421.

[0104] like Figures 1-3As shown, in some embodiments of the present invention, the drive coil 422 further includes two short sides 4222 disposed at both ends of the long side 4221 along its length. Each short side 4222 is connected to the two long sides 4221 at both ends. The long side 4221 and the short side 4222 define a central hole. The counterweight 421 further includes a fixing protrusion 4211 disposed in the assembly groove 421a. The fixing protrusion 4211 passes through the central hole. Thus, the drive coil 422 can be easily fixed in the assembly groove 421a, and the connection between the drive coil 422 and the counterweight 421 can be made more secure.

[0105] An electronic device according to a second aspect of the present invention includes a vibration-generating sound device 100 according to the above-described embodiments of the present invention. Optionally, the electronic device may be a mobile phone, a tablet computer, a laptop computer, etc.

[0106] According to the second aspect of the present invention, the electronic device is provided with the above-mentioned vibration sound generating device 100. The vibration sound generating device 100 has a compact structural design, occupies little assembly space, and has good sound generation and vibration effects. This can meet the requirements of the thin and light design of electronic devices, and also enable electronic devices to have both good sound quality and vibration feedback effects, thereby enhancing the product market competitiveness of electronic devices.

[0107] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0108] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0109] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0110] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vibration-generating sound device, characterized in that, include: A housing, within which an installation space is defined; A magnetic circuit system includes a central magnetic part and side magnetic parts outside the central magnetic part. The central magnetic part and the side magnetic parts are spaced apart to define a magnetic gap. The central magnetic part includes a plurality of first sub-central magnets spaced apart along a first direction. The magnetization directions of two adjacent first sub-central magnets are opposite. The side magnetic parts include side magnets. The central magnetic part also includes second sub-central magnets disposed on both sides of a third direction of the plurality of first sub-central magnets. The third direction is perpendicular to the first direction and the second direction, respectively. The side magnets, the first sub-central magnets and the second sub-central magnets are all magnetized along the second direction. Along the first direction, the magnetization directions between adjacent side magnets and the first sub-central magnets, as well as between two adjacent first sub-central magnets, are opposite. Along the third direction, the magnetization directions between adjacent side magnets and the second sub-central magnets are opposite. A first vibration system and a second vibration system are disposed on opposite sides of the magnetic circuit system. The first vibration system vibrates along a second direction perpendicular to the first direction. The first vibration system includes a diaphragm assembly and a voice coil. One end of the voice coil is connected to the diaphragm assembly, and the other end of the voice coil is inserted into the magnetic gap. The second vibration system includes an elastic connector and a vibrator assembly. Both ends of the elastic connector are respectively connected to the vibrator assembly and the inner wall of the housing to suspend the vibrator assembly in the installation space. The vibrator assembly includes a counterweight and a drive coil disposed on the counterweight. The drive coil has two opposing long sides. Along the second direction, at least a portion of the two long sides are respectively positioned opposite to two adjacent first sub-center magnets, and the drive coil is opposite to the central magnetic part. Wherein, two adjacent first sub-center magnets are spaced apart to form a spacer portion, the spacer portion having an extension component along the first direction and a third direction, the extension direction of the long side having an extension component along the first direction and the third direction, so that the movement direction of the oscillator assembly has a movement component along the first direction and the third direction, the third direction being perpendicular to the first direction and the second direction respectively.

2. The vibration-generating sound device according to claim 1, characterized in that, The first sub-center magnet located at both ends extends in a direction parallel to the third direction on the side closest to the edge magnet.

3. The vibration-generating sound device according to claim 1, characterized in that, There are at least three first sub-center magnets, and two adjacent first sub-center magnets are spaced apart to form a spacer. The number of drive coils is the same as the number of spacers.

4. The vibration-generating sound device according to claim 1, characterized in that, The side magnet section includes a side magnet, and the side magnet and a plurality of first sub-center magnets are all magnetized along the second direction, and the magnetization directions between adjacent side magnets and first sub-center magnets and between two adjacent first sub-center magnets are opposite.

5. The vibration-generating sound device according to claim 1, characterized in that, The central magnetic part also includes a central magnetic guide plate, and the side of each of the plurality of first sub-central magnets away from the second vibration system is connected to the central magnetic guide plate.

6. The vibration-generating sound device according to any one of claims 1-5, characterized in that, The magnetic circuit system further includes a magnetic yoke, which includes a body and a hollow hole in the body. The side magnetic part and the first sub-center magnet located at both ends are both located in the body. Along the second direction, the hollow hole is at least partially opposite to the drive coil.

7. The vibration-generating sound device according to claim 6, characterized in that, The projections of the other first sub-center magnets between the first sub-center magnets located at both ends along the second direction are all located inside the edge of the hollow hole.

8. The vibration-generating sound device according to claim 6, characterized in that, A portion of the first sub-center magnet located at both ends is disposed on the main body, and the other portion of the first sub-center magnet is disposed opposite to the hollow hole.

9. The vibration-generating sound device according to any one of claims 1-4, characterized in that, The central magnetic part further includes a central magnetic guide plate. The side of each of the plurality of first sub-central magnets away from the second vibration system is connected to the central magnetic guide plate. The magnetic circuit system further includes a magnetic guide yoke. The magnetic guide yoke includes a body part and a hollow hole provided in the body part. The side magnetic part is provided in the body part on the side closer to the second vibration system. The central magnetic guide plate includes a support part and an extension part provided outside the support part. The extension part extends along the second direction. The two ends of the extension part are respectively connected to the support part and the body part. The support part is arranged opposite to the hollow hole. The plurality of first sub-central magnets are fixed to the support part.

10. The vibration-generating sound device according to claim 9, characterized in that, Along the third direction, the extension is located on opposite sides of the support, and the side magnetic portion and the extension are spaced apart to define a portion of the magnetic gap.

11. The vibration-generating sound device according to claim 9, characterized in that, The projections of the plurality of first sub-central magnets along the second direction are all located inside the edge of the hollow hole.

12. The vibration-generating sound device according to claim 1, characterized in that, The central magnetic part further includes a central magnetic guide plate. The sides of the plurality of first sub-central magnets and second sub-central magnets away from the second vibration system are all connected to the central magnetic guide plate. The magnetic circuit system further includes a magnetic guide yoke. The magnetic guide yoke includes a body part and a hollow hole provided in the body part. The side magnets and the second sub-central magnets are both provided in the body part. Along the second direction, the hollow hole is at least partially opposite to the drive coil.

13. The vibration-generating sound device according to claim 12, characterized in that, The projections of the plurality of first sub-central magnets along the second direction are all located inside the edge of the hollow hole.

14. The vibration-generating sound device according to any one of claims 1-5, characterized in that, The counterweight has an assembly slot on the side near the magnetic circuit system, and the drive coil is embedded in the assembly slot.

15. The vibration-generating sound device according to claim 14, characterized in that, The drive coil also includes two short sides located at both ends of the long side along its length. Each short side is connected to both ends of the two long sides. The long side and the short side define a central hole. The counterweight also includes a fixing protrusion located in the assembly groove and passing through the central hole.

16. The vibration-generating sound device according to any one of claims 1-5, characterized in that, The elastic connector has a first elastic connecting portion extending along the first direction and a second elastic connecting portion extending along the third direction. The first elastic connecting portion is connected to the second elastic connecting portion. One of the first elastic connecting portion and the second elastic connecting portion is connected to the housing, and the other of the first elastic connecting portion and the second elastic connecting portion is connected to the oscillator assembly.

17. An electronic device, characterized in that, Includes the vibration-generating sound device according to any one of claims 1-16.

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