Vibration exciter and electronic apparatus
By extending the elastic support to the outside of the housing in the vibration exciter and combining it with the design of a mass block and a magnetic plate, the problem of insufficient internal space is solved, resulting in stronger vibration and driving force, and improving user experience and reliability.
Patent Information
- Application Number
- CN202511773065.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-02-24
AI Technical Summary
The existing vibration exciter has insufficient internal space, resulting in insufficient vibration sensation and an inability to provide a rich user experience.
Design a vibration exciter in which the fixed part of the elastic support extends to the outside through the opening in the side wall of the housing, the oscillator assembly is suspended in the housing and connected to the housing through the elastic connection part arranged at an acute angle to increase the internal usable space, the oscillator assembly includes a magnet and a coil, and the mass block cooperates with the magnetic plate to enhance the driving force.
By increasing the internal space, the vibration exciter's vibration sensation and driving force are enhanced, providing a richer user experience, reducing the risk of vibration failure, and improving reliability and magnetic field utilization.
Smart Images
Figure CN121566873A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vibration device technology, and in particular to a vibration exciter and electronic device. Background Technology
[0002] With the increasing number of applications using vibration exciters, the market has put forward various demands for the performance of vibration exciters. As a vibration excitation device, increasing the vibration sensation and other performance of the product within the effective space and providing a richer user experience is bound to be the future trend of vibration exciter development. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a vibration exciter and electronic device that can increase the internal usable space.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: On one hand, embodiments of the present invention provide a dynamic actuator, including a housing, an oscillator assembly and a stator assembly housed within the housing, wherein: The oscillator assembly is suspended within the housing, and one of the oscillator assembly and the stator assembly includes a magnet, while the other of the oscillator assembly and the stator assembly includes a coil; The vibration exciter further includes an elastic support for supporting the oscillator assembly. The elastic support includes a first fixing part, a second fixing part, and an elastic connecting part located between the first fixing part and the second fixing part. The side wall of the housing is provided with an opening. The first fixing part is fixed to the oscillator assembly. The elastic connecting part passes through the opening. The second fixing part is fixed to the outer side wall of the housing. The angle between the extension direction of the elastic connecting part located in the opening and the vibration direction of the oscillator assembly is an acute angle.
[0005] In some embodiments of the present invention, the included angle is less than or equal to 30 degrees.
[0006] In some embodiments of the present invention, the oscillator assembly includes the magnet, the stator assembly includes the coil, the magnet includes a first magnet and a second magnet disposed opposite to each other, the oscillator assembly further includes a mass block having a receiving hole, the first magnet and the second magnet are respectively disposed on opposite side walls of the receiving hole, the coil is at least partially located in the receiving hole and disposed between the first magnet and the second magnet, and the first fixing part is fixed to the outer side wall of the mass block parallel to the vibration direction of the oscillator assembly.
[0007] In some embodiments of the present invention, there are two elastic supports, and the first fixing part and the second fixing part of each elastic support are respectively fixed to the outer side wall of the mass block and the shell, which are far apart from each other, and the two elastic supports are arranged in a centrally symmetrical manner.
[0008] In some embodiments of the present invention, the outer side wall of the mass block connected to the first fixing part has a first limiting protrusion on the side away from the corresponding elastic support member. And / or, the outer wall of the mass block connected to the first fixing part has a clearance step on the side of the outer wall near the corresponding elastic support member; And / or, the mass block has a second limiting protrusion on its outer side wall perpendicular to the vibration direction of the oscillator assembly.
[0009] In some embodiments of the present invention, a first magnetic plate and a second magnetic plate are respectively provided between the opposite side walls of the receiving hole and the first magnet and the second magnet, the first magnet is fixed to the first magnetic plate, and the second magnet is fixed to the second magnetic plate.
[0010] In some embodiments of the present invention, both the first magnet and the second magnet include a central magnet and side magnets located on both sides of the central magnet. The magnetization direction of the central magnet is perpendicular to the vibration direction of the oscillator assembly, and the magnetization direction of the side magnets is parallel to the vibration direction of the oscillator assembly. The polarity of the end of the side magnet near the central magnet is the same as the polarity of the end of the central magnet facing the coil. The magnetization directions of the central magnets of the first magnet and the second magnet are opposite.
[0011] In some embodiments of the present invention, the stator assembly further includes an iron core, and the coil is wound on the iron core.
[0012] In some embodiments of the present invention, the iron core includes a main body and two ends disposed at both ends of the main body, the two ends being circumferentially extended beyond the main body, the coil being wound around the main body, and the axial direction of the coil being parallel to the vibration direction of the oscillator assembly.
[0013] In some embodiments of the present invention, the housing includes a lower shell and an upper shell covering the lower shell, wherein: The opening is provided on the side wall of the upper shell; And / or, the lower housing is provided with an FPC, the FPC being electrically connected to the coil; And / or, along the vibration direction of the oscillator assembly, the lower shell is provided with limiting blocks on both sides of the mass block, and the mass block is provided with limiting grooves on both sides that cooperate with the limiting blocks, the depth of the limiting grooves being less than the thickness of the limiting blocks.
[0014] On the other hand, embodiments of the present invention provide an electronic device including the vibration exciter described above.
[0015] The present invention has the following beneficial effects: The vibration exciter and electronic device of this invention include a housing, an oscillator assembly and a stator assembly housed within the housing, the oscillator assembly being suspended within the housing, and the vibration exciter further including an elastic support member for supporting the oscillator assembly. The elastic support member includes a first fixing part, a second fixing part, and an elastic connecting part located between the first fixing part and the second fixing part. An opening is provided on the side wall of the housing. The first fixing part is fixed to the oscillator assembly, the elastic connecting part passes through the opening, and the second fixing part passes through the housing and is fixed to the outer side wall of the housing. The angle between the extension direction of the elastic connecting part located in the opening and the vibration direction of the oscillator assembly forms an acute angle. During the research process, the inventors discovered that existing elastic support members are generally only fixed inside the housing. In this embodiment of the invention, the elastic support member extends to the outside of the housing, increasing the internal usable space. This increases the vibration sensation of the product within the effective space, providing more possibilities for improving the performance of the vibration exciter and offering a richer user experience. Attached Figure Description
[0016] 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: Figure 1 This is an exploded structural diagram of the vibration exciter according to an embodiment of the present invention; Figure 2 This is a bottom view of the vibration exciter according to an embodiment of the present invention after the lower shell has been removed; Figure 3 This is a schematic diagram of the magnetic pole direction of the magnet in an embodiment of the present invention.
[0017] Figure label: 100. Vibration exciter 1. Shell, 11. Upper shell, 111. Opening, 12. Lower shell, 121. Limiting block, 2. Oscillator assembly; 21. First magnet; 211. Central magnet; 212. Side magnet; 22. Second magnet; 23. Mass block; 231. Receiving hole; 232. First limiting protrusion; 233. Clearance step; 234. Second limiting protrusion; 235. Limiting groove; 24. First magnetic guide plate; 25. Second magnetic guide plate. 3. Stator assembly; 31. Coil; 32. Core; 321. Main body; 322. End; 33. FPC. 4. Elastic support member; 41. First fixing part; 42. Second fixing part; 43. Elastic connecting part; 44. Clearance groove; 45. Stop block. 5. Buffer components. Detailed Implementation
[0018] 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.
[0019] On one hand, embodiments of the present invention provide a vibration exciter 100, such as... Figure 1-3 As shown, the device includes a housing 1, an oscillator assembly 2 housed within the housing 1, and a stator assembly 3. The oscillator assembly 2 is suspended within the housing 1. One of the oscillator assembly 2 and the stator assembly 3 includes a magnet, and the other includes a coil 31. The vibration exciter 100 also includes an elastic support 4 for supporting the oscillator assembly 2. The elastic support 4 includes a first fixing part 41, a second fixing part 42, and an elastic connecting part 43 located between the first fixing part 41 and the second fixing part 42. The side wall of the housing 1 has an opening 111. The first fixing part 41 is fixed to the oscillator assembly 2 (specifically, it can be welded together by a stop block 45). The elastic connecting part 43 passes through the opening 111. The second fixing part 42 is fixed to the outer side wall of the housing 1 (specifically, it can be welded together by a stop block 45). The angle α between the extension direction of the elastic connecting part 43 located in the opening 111 and the vibration direction of the oscillator assembly 2 is an acute angle.
[0020] In use, after the coil 31 is energized, it interacts with the magnetic field of the magnet, causing the oscillator assembly 2 to move along the X-direction under the support of the elastic support member 4 (e.g., Figure 2 (As shown); when the driving signal of coil 31 is an alternating signal, the oscillator assembly 2 is subjected to an alternating force, causing the oscillator assembly 2 to reciprocate along the X direction and generate vibration.
[0021] The vibration exciter 100 of this invention includes a housing 1, an oscillator assembly 2 and a stator assembly 3 housed within the housing 1. The oscillator assembly 2 is suspended within the housing 1. The vibration exciter 100 also includes an elastic support member 4 for supporting the oscillator assembly 2. The elastic support member 4 includes a first fixing part 41, a second fixing part 42, and an elastic connecting part 43 located between the first fixing part 41 and the second fixing part 42. The side wall of the housing 1 has an opening 111. The first fixing part 41 is fixed to the oscillator assembly 2. The elastic connecting part 43 passes through the opening 111. The second fixing part 42 is fixed to the outer side wall of the housing 1. The angle α between the extension direction of the elastic connecting part 43 in the opening 111 and the vibration direction of the oscillator assembly 2 forms an acute angle. During the research process, the inventors discovered that existing elastic supports are generally only fixed inside the housing. In this embodiment of the invention, the elastic support member 4 extends to the outside of the housing 1, increasing the internal usable space. The effective space increases the vibration sensation of the product, providing more possibilities for improving the performance of the vibration exciter 100 and offering a richer user experience. Furthermore, during the vibration of the oscillator assembly 2, the elastic connection part 43 does not come into contact with the opening 111. The opening 111 is relatively large, making it convenient for the elastic support 4 to pass through the opening 111 during installation.
[0022] In some embodiments of the present invention, such as Figure 2 As shown, the angle α between the extending direction of the elastic connecting part 43 located in the opening 111 and the vibration direction of the oscillator assembly 2 is less than or equal to 30 degrees, such as 10 degrees, 15 degrees, 20 degrees, 25 degrees, etc. In this way, the elastic connecting part 43 can have a better elastic support effect, and can also better avoid interference between components (between the elastic connecting part 43 and the housing 1, and between the elastic connecting part 43 and the oscillator assembly 2).
[0023] In some embodiments of the present invention, the stator assembly 3 may include a magnet (i.e., a first magnet 21 and a second magnet 22), and the oscillator assembly 2 may include a coil 31. In this case, the coil 31, as part of the oscillator assembly 2, can reciprocate along the X direction. Alternatively, the stator assembly 3 may include the coil 31, and the oscillator assembly 2 may include the magnet, i.e., the magnet, as part of the oscillator assembly 2, can reciprocate along the X direction under the support of the elastic support member 4. The present invention does not limit this, and the positions of the coil 31 and the magnet can be interchanged according to actual needs. The following description will use the example of the oscillator assembly 2 including a magnet.
[0024] In some embodiments of the present invention, such as Figure 1-2As shown, the oscillator assembly 2 includes a magnet, and the stator assembly 3 includes a coil 31. The magnet includes a first magnet 21 and a second magnet 22 disposed opposite to each other. The oscillator assembly 2 also includes a mass block 23 with a receiving hole 231. The first magnet 21 and the second magnet 22 are respectively disposed on opposite side walls of the receiving hole 231. The coil 31 is at least partially located within the receiving hole 231 and disposed between the first magnet 21 and the second magnet 22. A first fixing part 41 is fixed to the outer side wall of the mass block 23 parallel to the vibration direction of the oscillator assembly 2 (specifically, it can be in the middle of the outer side wall). In this way, by setting the mass block 23 to increase the mass of the oscillator assembly 2, the displacement of the oscillator assembly 2 can be reduced while the driving force remains unchanged. This allows the oscillator assembly 2 to provide a larger vibration at a lower displacement, thereby reducing the risk of failure of the vibration exciter 100 and improving the reliability of the vibration exciter 100. Furthermore, the first magnet 21 and the second magnet 22 are disposed on opposite side walls of the receiving hole 231 of the mass block 23, which facilitates the installation and fixing of the first magnet 21 and the second magnet 22.
[0025] In some embodiments of the present invention, there are two elastic supports 4. The first fixing part 41 and the second fixing part 42 of each elastic support 4 are respectively fixed to the outer sidewalls of the mass block 23 and the housing 1, which are far apart from each other. The two elastic supports 4 are arranged in a centrally symmetrical manner. This allows the oscillator assembly 2 to be stably suspended within the housing 1, and the supporting force to be more uniform. Figure 2 The elastic support 4, located on the left side, has two fixed parts fixed to the upper outer wall of the mass block 23 and the lower outer wall of the shell 1, respectively. Figure 2 The elastic support 4 located on the right side has two fixed parts fixed to the lower outer wall of the mass block 23 and the upper outer wall of the housing 1, respectively. At this time, the elastic connection part 43 of each elastic support 4 surrounds (but does not contact) one outer wall (left or right wall) of the mass block 23 perpendicular to the vibration direction of the oscillator assembly 1. The elastic connection part 43 has a long extension distance, thereby providing sufficient elastic support.
[0026] In some embodiments of the present invention, the outer side of the mass block 23 connected to the first fixing part 41 is located away from the side of the corresponding elastic support 4. Figure 2 For the elastic support 4 located on the left side (i.e., the right side of the upper sidewall of the mass block 23), a first limiting protrusion 232 is provided to limit the fall and prevent damage to the elastic support 4, thereby improving the reliability of the product. Meanwhile, the outer sidewall of the mass block 23 connected to the first fixing part 41, the side of this outer sidewall closest to the corresponding elastic support 4 ( Figure 2For the elastic support member located on the left side (i.e., the left side of the upper sidewall of the mass block 23), a clearance step 233 is provided. This clearance step 233 prevents the elastic support member 4 from contacting the mass block 23 during vibration, avoiding noise and improving the elastic support effect of the elastic support member 4. Furthermore, the outer wall of the mass block 23 perpendicular to the vibration direction of the oscillator assembly 2 (… Figure 2 The left / right side wall of the medium mass block 23 is provided with a second limiting protrusion 234. The second limiting protrusion 234 can limit the displacement of the oscillator assembly 2 in the vibration direction, prevent the elastic support 4 from being over-compressed and causing permanent deformation, thereby protecting the elastic support 4.
[0027] Specifically, the elastic connecting portion 43 of the elastic support member 4 may be provided with a relief groove 44 in the middle to avoid the second limiting protrusion 234. At least one of the two surfaces of the oscillator assembly 2 and the housing 1 that collide with each other is provided with a buffer member 5. The buffer member 5 can be a soft or elastic structure such as foam, airbag, or rubber. The buffer member 5 can be provided on the oscillator assembly 2 (in which case the second limiting protrusion 234 can be used to support the buffer member 5), or it can be provided on the housing 1, or both. In this way, rigid collisions between the two can be avoided, and the impact force can be buffered by the buffer member 5, preventing damage caused by multiple collisions between the oscillator assembly 2 and the housing 1.
[0028] In some embodiments of the present invention, a first magnetic guide plate 24 and a second magnetic guide plate 25 are respectively provided between the opposite side walls of the receiving hole 231 of the mass block 23 and the first magnet 21 and the second magnet 22. The first magnet 21 is fixed to the first magnetic guide plate 24, and the second magnet 22 is fixed to the second magnetic guide plate 25. Specifically, the first magnet 21 can be bonded and fixed to the first magnetic guide plate 24, and the second magnet 22 can be bonded and fixed to the second magnetic guide plate 25. The first magnetic guide plate 24 and the second magnetic guide plate 25 can be bonded or welded to the receiving hole 231 of the mass block 23. In this way, the installation and fixation of the first magnet 21 and the second magnet 22 are better realized. At the same time, under the action of the magnetic guide plate, the magnetic field of the first magnet 21 and the second magnet 22 that might originally diffuse outward is constrained between the first magnetic guide plate 24 and the second magnetic guide plate 25, reducing magnetic leakage and strengthening the magnetic field, thereby strengthening the driving force on the oscillator assembly 2, and further strengthening the torque of the oscillator assembly 2 and the overall vibration force of the vibration exciter 100. The shapes of the first magnetic plate 24 and the second magnetic plate 25 can be flexibly designed as needed, such as U-shaped or flat as shown in the figure. It is conceivable that when the first magnetic plate 24 and the second magnetic plate 25 are designed as an integrated frame structure (such as ring or I-shaped), the oscillator assembly 2 can omit the aforementioned mass block 23.
[0029] In some embodiments of the present invention, the first magnet 21 and the second magnet 22 can both be a single piece of magnet, preferably, as shown below. Figure 3 As shown, both the first magnet 21 and the second magnet 22 include a central magnet 211 and side magnets 212 located on both sides of the central magnet 211. The magnetization direction of the central magnet 211 (as indicated by the arrow in the figure) is perpendicular to the vibration direction of the oscillator assembly 2, and the magnetization direction of the side magnets 212 is parallel to the vibration direction of the oscillator assembly 2. The polarity of the end of the side magnet 212 near the central magnet 211 is the same as the polarity of the end of the central magnet 211 facing the coil 31. The magnetization directions of the central magnets 211 of the first magnet 21 and the second magnet 22 are opposite. In this way, the first magnet 21 and the second magnet 22, by forming a Helbeck array with multiple magnets, can enhance the magnetic field strength, increase the driving force on the oscillator assembly 2, and enhance the vibration force of the vibration exciter 100.
[0030] In some embodiments of the present invention, the stator assembly 3 may include a bracket (not shown), and the coil 31 is fixed to the housing 1 by the bracket. Preferably, the stator assembly 3 includes an iron core 32, and the coil 31 is wound around the iron core 32. In this case, the coil 31 is fixed to the housing 1 (specifically, it can be fixed to the lower housing 12) by the iron core 32. The iron core 32 can enhance the magnetic field strength generated by the coil 31, thereby increasing the driving force of the stator assembly 3 on the oscillator assembly 2. In order to concentrate the magnetic field generated by the coil 31 when energized, so as to increase the driving force of the interaction between the coil and each magnet, thereby increasing the vibration intensity of the vibration exciter 100 and improving the user experience, the iron core 32 includes a main body 321 and two ends 322 provided at both ends of the main body 321. The two ends 322 are circumferentially extended beyond the main body 321. The coil 31 is wound around the main body 321, and the axial direction of the coil 31 is parallel to the vibration direction of the oscillator assembly 2.
[0031] In some embodiments of the present invention, the following continues... Figure 1As shown, the housing 1 may include a lower housing 12 and an upper housing 11 covering the lower housing 12. The side wall of the upper housing 11 may have an opening 111 to allow the elastic support 4 to extend out of the interior of the upper housing 11 and be fixed to the outside of the upper housing 11, thereby increasing the internal usable space. An FPC 33 may be provided on the lower housing 12. The FPC 33 is electrically connected to the coil 31, enabling the coil 31 to be connected to an external circuit, thereby providing AC power to the coil 31. Along the vibration direction of the oscillator assembly 2, the lower housing 12 may have limiting blocks 121 on both sides of the mass block 23. The mass block 23 has limiting grooves 235 on both sides that cooperate with the limiting blocks 121. The depth h1 of the limiting grooves 235 is less than the thickness h2 of the limiting blocks 121. Thus, by setting the limiting grooves 235, internal space can be further saved, the volume of the mass block 23 can be increased, and product performance can be enhanced. In the embodiment shown in the figure, the first magnet 21 and the second magnet 22 are fixed on the magnetic guide plate. The magnetic guide plate is connected to the mass block 23 and the mass block 23 is connected to the upper shell 11 through the elastic support member 4 to form the oscillator assembly 2. The coil 31 is directly wound on the iron core 32, which is connected to the lower shell 12. The start and end wires of the coil 31 are fixed on the FPC 33, and the limiting block 121 is fixed on the lower shell 12 to form the stator assembly 3.
[0032] In summary, the embodiments of the present invention have the following advantages: 1. The elastic support 4 extends to the outside of the upper shell 11. When welding the elastic support 4, the elastic support 4 can be directly fixed to the outside, which reduces the complexity of the mechanism. 2. Mass block 23 can eliminate the position that originally needed to avoid the jig; for the same volume, the oscillator assembly 2 has a larger mass. 3. Because of the larger internal space, the volume of the magnetic circuit and the volume of mass block 23 can be increased for the same volume; 4. Increasing the volume of the magnetic circuit and mass block 23 can improve the driving force and vibration of the product.
[0033] On the other hand, embodiments of the present invention provide an electronic device including the vibration exciter 100 described above. The structure of the vibration exciter 100 is the same as described above, and will not be repeated here. The electronic device may be a mobile phone, watch, tablet computer, smart wearable device, virtual reality device, or augmented reality device, etc.
[0034] Since the electronic device proposed in this application applies all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated here.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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 exciter, characterized in that, Includes a housing, an oscillator assembly housed within the housing, and a stator assembly, wherein: The oscillator assembly is suspended within the housing, and one of the oscillator assembly and the stator assembly includes a magnet, while the other of the oscillator assembly and the stator assembly includes a coil; The vibration exciter further includes an elastic support for supporting the oscillator assembly. The elastic support includes a first fixing part, a second fixing part, and an elastic connecting part located between the first fixing part and the second fixing part. The side wall of the housing is provided with an opening. The first fixing part is fixed to the oscillator assembly. The elastic connecting part passes through the opening. The second fixing part is fixed to the outer side wall of the housing. The angle between the extension direction of the elastic connecting part located in the opening and the vibration direction of the oscillator assembly is an acute angle.
2. The vibration exciter according to claim 1, characterized in that, The included angle is less than or equal to 30 degrees.
3. The vibration exciter according to claim 1, characterized in that, The oscillator assembly includes the magnet, the stator assembly includes the coil, the magnet includes a first magnet and a second magnet disposed opposite to each other, the oscillator assembly also includes a mass block having a receiving hole, the first magnet and the second magnet are respectively disposed on opposite side walls of the receiving hole, the coil is at least partially located in the receiving hole and disposed between the first magnet and the second magnet, and the first fixing part is fixed to the outer side wall of the mass block parallel to the vibration direction of the oscillator assembly.
4. The vibration exciter according to claim 3, characterized in that, There are two elastic support members. The first fixing part and the second fixing part of each elastic support member are respectively fixed to the outer side wall of the mass block and the shell, which are far apart from each other. The two elastic support members are arranged in a centrally symmetrical manner.
5. The vibration exciter according to claim 4, characterized in that, The outer side wall of the mass block connected to the first fixing part has a first limiting protrusion on the side away from the corresponding elastic support member. And / or, the outer wall of the mass block connected to the first fixing part has a clearance step on the side of the outer wall near the corresponding elastic support member; And / or, the mass block has a second limiting protrusion on its outer side wall perpendicular to the vibration direction of the oscillator assembly.
6. The vibration exciter according to claim 3, characterized in that, A first magnetic guide plate and a second magnetic guide plate are respectively provided between the opposite side walls of the receiving hole and the first magnet and the second magnet. The first magnet is fixed to the first magnetic guide plate and the second magnet is fixed to the second magnetic guide plate.
7. The vibration exciter according to claim 3, characterized in that, Both the first magnet and the second magnet include a central magnet and side magnets located on both sides of the central magnet. The magnetization direction of the central magnet is perpendicular to the vibration direction of the oscillator assembly, and the magnetization direction of the side magnets is parallel to the vibration direction of the oscillator assembly. The polarity of the end of the side magnet near the central magnet is the same as the polarity of the end of the central magnet facing the coil. The magnetization directions of the central magnets of the first magnet and the second magnet are opposite.
8. The vibration exciter according to any one of claims 1-7, characterized in that, The stator assembly further includes an iron core, and the coil is wound around the iron core. The iron core includes a main body and two ends located at both ends of the main body. The two ends are circumferentially extended beyond the main body. The coil is wound around the main body, and the axial direction of the coil is parallel to the vibration direction of the oscillator assembly.
9. The vibration exciter according to claim 8, characterized in that, The housing includes a lower shell and an upper shell covering the lower shell, wherein: The opening is provided on the side wall of the upper shell; And / or, the lower housing is provided with an FPC, the FPC being electrically connected to the coil; And / or, along the vibration direction of the oscillator assembly, the lower shell is provided with limiting blocks on both sides of the mass block, and the mass block is provided with limiting grooves on both sides that cooperate with the limiting blocks, the depth of the limiting grooves being less than the thickness of the limiting blocks.
10. An electronic device, characterized in that, Includes the vibration exciter as described in any one of claims 1-9.