Vibration device and electronic device

Abstract

This invention discloses a vibration device and electronic device, relating to the field of micro-vibration technology. The vibration device includes a housing, a stator assembly, and an oscillator assembly, with a mounting cavity formed within the housing. The stator assembly includes a coil structure located within the mounting cavity. The oscillator assembly includes a mass block disposed within the mounting cavity, two magnetic circuit structures, and two damping elements. Elastic connectors are provided on both sides of the mass block, and the mass block is elastically connected to the housing via these connectors. Grooves are provided at both ends of the mass block along a first direction, and damping elements are disposed within each groove. The grooves connect the mounting space to the outside of the mass block. Each damping element includes a middle portion and a first fixing portion and a second fixing portion located at both ends of the middle portion along the first direction, with the middle portion passing through the groove. This invention effectively avoids direct hard collisions between the mass block and the coil structure by using damping elements for buffered contact, thereby reducing the risk of damage to the oscillator assembly and the coil structure.

Description

Technical Field

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

[0002] A vibration device is a device that directly converts electrical energy into linear motion without the need for intermediate transmission mechanisms (such as gears and belts) in traditional rotary motors. It has advantages such as high speed, high precision, low noise, and simple structure. Vibration devices are the core components for providing tactile feedback in electronic devices.

[0003] Existing vibration devices include a stator assembly and a mover assembly. The interaction between the coil structure of the stator assembly and the magnetic circuit structure in the mover assembly causes the mover assembly to vibrate. However, during repeated vibration, the mover assembly is prone to collision with the coil structure. Prolonged impact can easily damage the mover assembly and the coil structure, affecting the stability and service life of the vibration device. Summary of the Invention

[0004] The main objective of this invention is to provide a vibration device and electronic device that aims to solve the problem that prolonged impact can easily damage the moving part and coil structure in the prior art.

[0005] To achieve the above objectives, the vibration device proposed in this invention includes:

[0006] A housing, wherein a mounting cavity is formed within the housing;

[0007] A stator assembly, comprising a coil structure mounted on the housing and located within the mounting cavity.

[0008] An oscillator assembly, wherein the coil structure enables the oscillator assembly to vibrate relative to the stator assembly along a first direction when energized; the oscillator assembly includes a mass block disposed within the mounting cavity, two magnetic circuit structures, and two damping elements; elastic connectors are disposed on both sides of the mass block along the first direction; the mass block is elastically connected to the housing through the elastic connectors, and the mass block encloses an mounting space; the coil structure and the two magnetic circuit structures are both located within the mounting space; the two magnetic circuit structures are spaced apart along a second direction and enclose a magnetic gap; wherein the first direction is different from the second direction, and the coil structure is located within the magnetic gap;

[0009] The mass block has grooves at both ends along the first direction, and a damping element is disposed in each groove. The grooves connect the mounting space with the outside of the mass block. The damping element includes a middle part and a first fixing part and a second fixing part located at both ends of the middle part along the first direction. The middle part passes through the groove. The first fixing part and the second fixing part are respectively located on both sides of the groove along the first direction. The first fixing part faces the coil structure and is spaced apart from or abuts against the coil structure. The second fixing part faces the elastic connector and is spaced apart from or abuts against the elastic connector.

[0010] In one embodiment, the coil structure includes an iron core and a coil wound on the iron core, the axis of the coil being parallel to the first direction, the first fixing part being directly opposite the iron core and spaced apart from the iron core, and the first fixing part being able to abut against the iron core when the mass block vibrates along the first direction;

[0011] And / or, when the mass block vibrates along the first direction, the second fixing part abuts against the elastic connector.

[0012] In one embodiment, the iron core includes two pole shoes spaced apart along the first direction and a winding portion connected between the two pole shoes, and the two pole shoes are respectively disposed corresponding to the two second fixing portions, each pole shoe being used to abut against the first fixing portion disposed on the same side when the mass block vibrates along the first direction.

[0013] In one embodiment, the mass block groove has recesses on both sides along the first direction, the first fixing part is at least partially located in the recess on the side facing the mounting space, and the second fixing part is at least partially located in the recess on the side away from the mounting space. The size of the recess along the second direction is larger than the size of the groove along the second direction.

[0014] In one embodiment, the mass block is arranged in a ring shape, and the mass block includes an inner wall facing the magnetic gap and an outer wall away from the magnetic gap. The inner wall and the outer wall are provided with recesses near the groove. The dimensions of the second fixing part and the first fixing part along the second direction are larger than the dimensions of the middle part along the second direction. The second fixing part abuts against the position of the recess on the outer wall, and the first fixing part abuts against the position of the recess on the inner wall.

[0015] In one embodiment, each of the second fixing portions forms an inclined contact surface on the side edge away from the magnetic gap, the contact surface being used to abut against the side of the elastic connector disposed on the same side as it toward the second fixing portion.

[0016] In one embodiment, the elastic connector is a U-shaped elastic connector with an opening facing the mass block. The two ends of the opening of the elastic connector are a first end and a second end, respectively. The first end of each elastic connector is connected to the mass block, and an inner stop block is provided on the side of each first end away from the mass block. The inner stop block is used to fix the corresponding first end to the mass block.

[0017] The second end of each of the elastic connectors is connected to the housing, and an outer stop is provided on the side of each second end away from the housing. The outer stop is used to fix the corresponding second end to the housing.

[0018] In one embodiment, the size of the middle portion along the third direction is smaller than the size of the corresponding groove along the third direction. The opening of the groove and the bottom wall of the groove are respectively located on both sides of the groove along the third direction. The middle portion is connected to the bottom wall of the groove so that the side of the middle portion facing the opening of the groove and the side wall of the groove form an overflow channel. The first direction, the second direction and the third direction are perpendicular to each other.

[0019] In one embodiment, each of the magnetic circuit structures includes a magnetic conductor and a magnetic component. Each magnetic conductor extends along the first direction and forms a mounting groove with its opening facing the magnetic gap. Two magnetic conductors are spaced apart along the second direction. The side of each magnetic conductor away from the opening is connected to the mass block. An overflow groove is provided at least one side of the corner of each mounting groove along a third direction. The magnetic component is bonded to the mounting groove by injection of adhesive. The first direction, the second direction, and the third direction are perpendicular to each other.

[0020] The present invention also provides an electronic device that incorporates the above-described vibration device.

[0021] The technical solution of this invention introduces a damping element into the vibration device. The mass block has grooves on both sides along the first direction, and a damping element is installed in each groove. When the mass block vibrates in the first direction, the first fixing part of the damping element can buffer against the coil structure, effectively preventing direct hard collisions between the mass block and the coil structure. This significantly reduces the risk of damage to the moving part assembly and coil structure caused by long-term repeated impacts. The second fixing part buffers against the elastic connector, preventing excessive impact from the mass block on the elastic connector and extending its service life. Simultaneously, the damping element also possesses a certain buffering and rebound capacity, contributing to improved stability and service life of the vibration device. Furthermore, the middle part of the damping element passes through the groove, allowing it to maintain a stable installation state under the constraint of the groove, preventing displacement during vibration. This ensures that the buffering effect between the first fixing part and the coil structure, and between the second fixing part and the elastic connector, remains effective at all times. Attached Figure Description

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

[0023] Figure 1 This is a schematic diagram of the exploded structure of a vibration device according to an embodiment of the present invention;

[0024] Figure 2 This is a partial structural schematic diagram of a vibration device provided in an embodiment of the present invention from one viewpoint;

[0025] Figure 3 A partial structural schematic diagram of a vibration device provided in an embodiment of the present invention from another perspective;

[0026] Figure 4 This is a schematic diagram of the mass block and damping component of a vibration device provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the housing and stator assembly of a vibration device according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the magnetic conductive component of a vibration device according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the magnetic conductive component and the magnetic component of the vibration device provided in an embodiment of the present invention.

[0030] Explanation of icon numbers:

[0031] 100. Vibration device; 1. Housing; 11. Mounting cavity; 12. Limiting plate; 13. Upper shell; 14. Lower shell; 2. Stator assembly; 21. Coil structure; 211. Iron core; 212. Coil; 213. Pole shoe; 214. Winding section; 22. Circuit board; 3. Oscillator assembly; 31. Mass block; 311. Groove; 312. Groove bottom wall; 313. Opening; 314. Inner wall; 315. Outer wall; 316. Recess; 32. Magnetic circuit structure; 321. Magnetic conductor; 3211. Bottom edge; 32111. 3212 Recess; 32121 Side; 32122 Connecting section; 32122 Abutting section; 32123 Abutting surface; 3213 Magnetic yoke bar; 3214 Slope; 322 Magnetic component; 323 Mounting groove; 324 Glue overflow groove; 33 Mounting space; 34 Magnetic gap; 35 Glue overflow channel; 4. Elastic connector; 41 First end; 42 Second end; 43 Inner stop block; 44 Outer stop block; 5. Damping component; 51 Middle part; 52 First fixing part; 53 Second fixing part; 531 Contact surface.

[0032] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] 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.

[0034] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0036] Existing vibration devices include a stator assembly and a mover assembly. The interaction between the coil structure of the stator assembly and the magnetic circuit structure in the mover assembly causes the mover assembly to vibrate. However, during repeated vibration, the mover assembly is prone to collision with the coil structure. Prolonged impact can easily damage both the mover assembly and the coil structure.

[0037] To address the above problems, the present invention proposes a vibration device 100.

[0038] Please combine Figures 1 to 4The vibration device 100 of this embodiment includes a housing 1, a stator assembly 2, and an oscillator assembly 3. A mounting cavity 11 is formed within the housing 1. The stator assembly 2 includes a coil structure 21, which is mounted on the housing 1 and located within the mounting cavity 11. When energized, the coil structure 21 enables the oscillator assembly 3 to vibrate relative to the stator assembly 2 along a first direction. The oscillator assembly 3 includes a mass block 31, two magnetic circuit structures 32, and two damping elements 5 disposed within the mounting cavity 11. Elastic connectors 4 are provided on both sides of the mass block 31 along the first direction. The mass block 31 is elastically connected to the housing 1 via the elastic connectors 4, and the mass block 31 forms a mounting space 33. The coil structure 21 and the two magnetic circuit structures 32 are both located within the mounting space 33. The two magnetic circuit structures 32 are spaced apart along a second direction. A magnetic gap 34 is formed by a cloth, wherein the first direction is different from the second direction, and the coil structure 21 is located inside the magnetic gap 34. The mass block 31 is provided with grooves 311 at both ends along the first direction, and a damping member 5 is provided in each groove 311. The grooves 311 connect the installation space 33 and the outside of the mass block 31. The damping member 5 includes a middle part 51 and a first fixing part 52 and a second fixing part 53 located at both ends of the middle part 51 along the first direction. The middle part 51 passes through the groove 311. The first fixing part 52 and the second fixing part 53 are respectively located on both sides of the groove 311 along the first direction. The first fixing part 52 faces the coil structure 21 and is spaced apart from or abuts against the coil structure 21. The second fixing part 53 faces the elastic connector 4 and is spaced apart from or abuts against the elastic connector 4.

[0039] Understandably, after the coil structure 21 is energized, the magnetic field generated by the coil structure 21 interacts with the magnetic field of the magnetic circuit structure 32 itself. Since the coil structure 21 is fixed to the shell 1, the magnetic circuit structure 32 will be driven to vibrate. The magnetic circuit structure 32 is connected to the mass block 31, and the mass block 31 is connected to the shell 1, thus the magnetic circuit structure 32 drives the mass block 31 to vibrate together. It should be noted that the first direction is... Figure 3 The left and right directions, the second direction is Figure 3 The front and back directions in the middle.

[0040] The technical solution of this invention introduces a damping element 5 into the vibration device 100. The mass block 31 has grooves 311 on both sides along the first direction, and a damping element 5 is disposed in each groove 311. This allows the mass block 31 to vibrate in the first direction, enabling buffer contact between the first fixing part 52 of the damping element 5 and the coil structure 21, effectively preventing direct hard collisions between the mass block 31 and the coil structure 21. This significantly reduces the risk of damage to the moving part assembly and coil structure 21 caused by long-term repeated impacts. The second fixing part 53 buffers contact with the elastic connector 4, preventing the mass block 31 from directly colliding with the coil structure 21. Block 31 exerts excessive impact on the elastic connector 4, thus extending the service life of the elastic connector 4. At the same time, the damping component 5 also has a certain buffering and rebounding capacity, which helps to improve the stability and service life of the vibration device 100. Meanwhile, the middle part 51 of the damping component 5 passes through the groove 311, so that the damping component 5 can maintain a stable installation state under the constraint of the groove 311 and will not shift during vibration. This ensures that the buffering effect of the damping component 5 between the first fixing part 52 and the coil structure 21, and between the second fixing part 53 and the elastic connector 4 is always in an effective state.

[0041] Please see Figure 5 In one embodiment, the coil structure 21 includes an iron core 211 and a coil 212 wound on the iron core 211. The axis of the coil 212 is parallel to the first direction. The first fixing part 52 is directly opposite the iron core 211 and is spaced apart from the iron core 211. When the mass block 31 vibrates along the first direction, the first fixing part 52 can abut against the iron core 211.

[0042] The axial direction of coil 212 is parallel to the first direction, which concentrates the magnetic field generated by coil 212 along the first direction. This causes the magnetic force on the oscillator assembly 3 to act along the first direction, improving the controllability and motion stability of the vibration path of the oscillator assembly 3. The first fixing part 52 is directly opposite the iron core 211 and spaced apart from the iron core 211. When the mass block 31 vibrates along the first direction, the first fixing part 52 can abut against the iron core 211. This allows the damping member 5 to make buffer contact with the iron core 211 through the first fixing part 52 when the vibration amplitude of the mass block 31 is too large, thereby effectively absorbing and dispersing the impact force and preventing the mass block 31 from directly colliding with the iron core 211 or coil 212. The spaced arrangement of the first fixing part 52 and the iron core 211 ensures that the normal displacement during the vibration process is not affected. The buffering effect only occurs at the extreme displacement, ensuring that the vibration device 100 has both high sensitivity and safety protection function.

[0043] Please combine Figures 1 to 4 In one embodiment, when the mass block 31 vibrates along the first direction, the second fixing part 53 abuts against the elastic connector 4.

[0044] The second fixing part 53 makes buffer contact with the elastic connector 4 when the mass block 31 vibrates along the first direction, so as to avoid excessive impact of the mass block 31 on the elastic connector 4 and improve the service life of the elastic connector 4.

[0045] The iron core 211 includes two pole shoes 213 spaced apart along the first direction and a winding portion 214 connected between the two pole shoes 213. The two pole shoes 213 are respectively arranged corresponding to the two second fixing portions 53. Each pole shoe 213 is used to abut against the first fixing portion 52 arranged on the same side when the mass block 31 vibrates along the first direction.

[0046] The two pole shoes 213 are connected to the housing 1. The two pole shoes 213 respectively abut against the first fixing part 52 of the damping member 5 arranged on both sides of the mass block 31 along the first direction. This ensures that the mass block 31 can effectively buffer the pole shoes 213 through the first fixing part 52 when vibrating, reduce mechanical wear and collision, avoid damage to the pole shoes 213 or the mass block 31, and also reduce the noise generated during vibration.

[0047] The mass block 31 has recesses 316 on both sides of the groove 311 along the first direction. The first fixing part 52 is at least partially located in the recess 316 on the side facing the mounting space 33, and the second fixing part 53 is at least partially located in the recess 316 on the side away from the mounting space 33. The size of the recess 316 along the second direction is larger than the size of the groove 311 along the second direction.

[0048] The first fixing part 52 and the second fixing part 53 cooperate with the recessed part 316, so that the damping member 5 is confined within the groove 311 along the first direction. The cooperation between the middle part 51 and the groove 311 confins the damping member 5 within the groove 311 along the second direction. This ensures that the damping member 5 maintains a stable installation state under the constraint of the recessed part 316, preventing the damping member 5 from shifting or loosening during the repeated vibration of the mass block 31 along the first direction, thereby ensuring that the buffering effect of the damping member 5 is always effective. The first fixing part 52 is at least partially located towards the... The recess 316 on one side of the mounting space 33 provides a clear limiting position for the first fixing part 52 when it is spaced apart from or abuts against the iron core 211, enabling it to reliably provide buffer protection and prevent it from failing to make effective contact with the iron core 211 due to offset. The second fixing part 53 is at least partially located in the recess 316 on the side opposite to the mounting space 33, so that the second fixing part 53 can be supported and restricted by the recess 316 when it is spaced apart from or abuts against the elastic connector 4, preventing it from offsetting or failing during the vibration return process.

[0049] In one embodiment, the mass block 31 is arranged in a ring shape. The mass block 31 includes an inner wall 314 facing the magnetic gap 34 and an outer wall 315 away from the magnetic gap 34. The inner wall 314 and the outer wall 315 are both provided with recesses 316 near the groove 311. The dimensions of the second fixing part 53 and the first fixing part 52 along the second direction are larger than the dimensions of the middle part 51 along the second direction. The second fixing part 53 abuts against the position of the recesses 316 on the outer wall 315, and the first fixing part 52 abuts against the position of the recesses 316 on the inner wall 314.

[0050] The mass block 31 is arranged in a ring, which makes the overall mass distribution of the vibration device 100 more uniform. This is beneficial for maintaining motion balance during vibration and reducing polarization and noise. The dimensions of the second fixing part 53 and the first fixing part 52 along the second direction are larger than the dimensions of the middle part 51 along the second direction, forming an I-shaped structure. This allows the first fixing part 52 and the second fixing part 53 to abut against the two recesses 316 on the inner wall 314 and the outer wall 315, respectively. The middle part 51 passes through the groove 311, so that the damping member 5 can form a "wide end limiting and narrow end passing" structural relationship on both sides along the first direction. This provides a stable limiting effect, prevents the damping member 5 from shifting toward the coil structure 21 or the elastic connector 4, and improves the overall stability of the damping member 5.

[0051] Each of the second fixing parts 53 forms an inclined contact surface 531 on the side edge away from the magnetic gap 34. The contact surface 531 is used to abut against the side of the elastic connector 4 disposed on the same side as it toward the second fixing part 53.

[0052] Each second fixing part 53 forms a contact surface 531 inclined in the second direction on the side edge away from the magnetic gap 34. The contact surface 531 abuts against the side of the elastic connector 4 on the same side facing the second fixing part 53, so that the side of the elastic connector 4 facing the second fixing part 53 can also form an inclined contact with the contact surface 531, which plays a dual role of buffering and guiding and limiting, reducing instantaneous impact force and extending the service life of the structure.

[0053] In one embodiment, the elastic connector 4 is a U-shaped elastic connector 4 with its opening facing the mass block 31. The two ends of the opening of the elastic connector 4 are a first end 41 and a second end 42, respectively. The first end 41 of each elastic connector 4 is connected to the mass block 31. An inner stop block 43 is provided on the side of each first end 41 away from the mass block 31. The inner stop block 43 is used to fix the corresponding first end 41 to the mass block 31. The second end 42 of each elastic connector 4 is connected to the housing 1. An outer stop block 44 is provided on the side of each second end 42 away from the housing 1. The outer stop block 44 is used to fix the corresponding second end 42 to the housing 1.

[0054] The design of the inner stop 43 and the outer stop 44 strengthens the connection between the elastic connector 4, the mass block 31 and the shell 1, improves the mechanical strength and fatigue resistance of the connection of the elastic connector 4, and effectively prevents the elastic connector 4 from loosening or deforming due to long-term vibration.

[0055] The size of the middle portion 51 along the third direction is smaller than the size of the corresponding groove 311 along the third direction. The opening 313 and the bottom wall 312 of the groove 311 are respectively located on both sides of the groove 311 along the third direction. The middle portion 51 is connected to the bottom wall 312 of the groove 311 so that the side of the middle portion 51 facing the opening 313 of the groove 311 and the side wall of the groove 311 form an overflow channel 35.

[0056] It should be noted that the third party is... Figure 3 The vertical direction, the first direction, the second direction and the third direction are perpendicular to each other.

[0057] The adhesive overflow channel 35 allows the middle part 51 to be bonded to both sides along the third direction with adhesive, which improves the stability of the middle part 51 and thus improves the reliability and stability of the bonding between the middle part 51 and the mass block 31. The adhesive overflow channel 35 is used to provide space for adhesive, so that excess adhesive can fill the adhesive overflow channel 35, increase the bonding area, and disperse vibration stress.

[0058] Please combine Figure 3 , Figure 6 and Figure 7 In one embodiment, each of the magnetic circuit structures 32 includes a magnetic conductor 321 and a magnetic component 322. Each of the magnetic conductors 321 extends along the first direction and forms a mounting groove 323 with its opening facing the magnetic gap 34. Two magnetic conductors 321 are spaced apart along the second direction. The side of each magnetic conductor 321 facing away from the opening is connected to the mass block 31. At least one side of the corner of each mounting groove 323 along a third direction is provided with an overflow groove 324. The magnetic component 322 is bonded to the mounting groove 323 by injection of adhesive.

[0059] The overflow groove 324 provides space for glue to overflow, allowing the glue to form a thickened glue layer at the corner, increasing the bonding area between the magnetic component 321 and the magnetic component 322, dispersing vibration stress. At the same time, compared with the traditional adhesive layer, the thickened glue layer can significantly enhance the shear and tensile strength of the glue during repeated vibration, making the bond between the magnetic component 321 and the magnetic component 322 more stable and less prone to delamination. This avoids the situation where the magnetic component 321 and the magnetic component 322 delamination and failure occur during the repeated vibration of the magnetic circuit structure 32.

[0060] In one embodiment, the magnetic conductive element 321 includes a bottom edge 3211 and two side edges 3212 respectively disposed on both sides of the bottom edge 3211 along a first direction. The bottom edge 3211 and the two side edges 3212 form a mounting groove 323. The connection between each side edge 3212 and the bottom edge 3211 forms a corner of the mounting groove 323. Each side edge 3212 and the bottom edge 3211 are provided with an overflow groove 324 on both sides along a third direction. Each overflow groove 324 is recessed from the corresponding side edge 3212 towards the other side edge 3212 along a third direction.

[0061] The three-sided structure formed by the bottom edge 3211 and the two side edges 3212 provides a stable cover for the magnetic component 322, allowing the magnetic component 322 to be bonded to the magnetic conductor 321 from three sides. Compared with the traditional planar groove structure, this structure has a larger bonding area and higher resistance to displacement, preventing the magnetic component 322 from shifting or becoming eccentric during vibration and improving the alignment accuracy of the magnetic circuit. The connection between the bottom edge 3211 and the side edges 3212 is usually the area where bending stress is most concentrated. The overflow groove 324 not only provides space for adhesive but also provides space for fine-tuning and avoiding metal deformation, preventing the metal from turning outward or collapsing inward during bending, which could cause groove deformation and thus avoid interference or dimensional deviations during the installation of the magnetic component 322.

[0062] Under normal circumstances, the magnetic component 322 is a magnet, and the magnetic conductive component 321 is a washer.

[0063] In one embodiment, the bottom edge 3211 is provided with recesses 32111 at both ends along the first direction. The recesses 32111 are located on the side of the bottom edge 3211 facing the magnetic element 322, and the recesses 32111 are recessed in a direction away from the magnetic element 322.

[0064] Meanwhile, the recesses 32111 at both ends of the bottom edge 3211 along the first direction are recessed in the direction away from the magnetic component 322, so that the recesses 32111 are located at the corner of the mounting groove 323, that is, at the bending point of the magnetic component 321. The recesses 32111 serve as clearance space, which can absorb the material squeeze generated when the magnetic component 321 is bent to form the mounting groove 323, avoid assembly interference caused by the deformation of the inner corner due to material squeeze, and ensure the dimensional accuracy of the magnetic circuit structure 32.

[0065] One end of the side edge 3212 is connected to the recess 32111. The thickness of the bottom edge 3211 corresponding to the recess 32111 is the same as the thickness of the side edge 3212. The side edge 3212 bends from its connection with the recess 32111 along the second direction toward the other magnetic conductive member 321 to form the corner.

[0066] The thickness of the recess 32111 is the same as the thickness of the side 3212. The recess 32111 and the side 3212 are pressed together before the side 3212 is bent to form the mounting groove 323. Therefore, the thickness of the recess 32111 and the side 3212 is the same. After the pressing is completed, the side 3212 is bent. The recess 32111 and the side 3212 absorb the extrusion material generated inside the bend, thus ensuring the dimensional accuracy of the magnetic circuit structure 32.

[0067] In one embodiment, each side 3212 includes a connecting section 32121 and an abutting section 32122. The side of the abutting section 32122 facing the mounting groove 323 forms an abutting surface 32123 for abutting against the magnetic component 322. One end of the connecting section 32121 is connected to the abutting section 32122, and the other end is connected to the recess 32111. The width of the connecting section 32121 along the third direction is the same as the width of the recess 32111 along the third direction, and both are smaller than the width of the abutting section 32122 and other areas of the base plate along the third direction. The two sides 3212 of the recess 32111 and the connecting section 32121 along the third direction are spliced ​​to form an overflow groove 324.

[0068] The abutting section 32122 forms an independent abutting surface 32123, enabling the magnetic component 322 to stably fit with the magnetic conductive component 321, providing reliable end face positioning. The recess 32111 and the connecting portion have the same width along the third direction, but are smaller than the width of the base plate along the third direction, so that the two sides of the recess 32111 and the connecting portion along the third direction can also be used to provide overflow space for adhesive. The two sides 3212 of the recess 32111 and the connecting section 32121 along the third direction form an overflow groove 324, so that the overflowing adhesive can form a thickened anchoring structure in the overflow groove 324, enhancing the bonding strength between the magnetic conductive component 321 and the magnetic component 322.

[0069] In one embodiment, the bottom edge 3211 protrudes along one side of the third direction to form a magnetic yoke 3213, the first direction, the second direction and the third direction are perpendicular to each other, and the side of the magnetic yoke 3213 facing the mounting groove 323 forms a slope 3214, the slope 3214 is inclined in the direction away from the mounting groove 323 along the direction away from the bottom edge 3211.

[0070] It should be noted that the third party is... Figure 3 The up and down directions in the middle.

[0071] The bottom edge 3211 protrudes along one side of the third direction to form a magnetic yoke strip 3213, which increases the size of the magnetic conductor 321 in the third direction, giving it a stronger magnetic conductivity, which is beneficial for closing the magnetic circuit and increasing the magnetic flux density. The side of the magnetic yoke strip 3213 facing the mounting groove 323 forms a slope 3214, and the slope 3214 is inclined in the direction away from the bottom edge 3211 and away from the mounting groove 323, serving as a diffusion and accumulation area for the adhesive during the glue injection process, effectively providing space for glue overflow, thereby further increasing the bonding strength between the magnetic component 322 and the magnetic conductor 321.

[0072] In one embodiment, the housing 1 includes an upper housing 13 and a lower housing 14, which together form a mounting cavity 11. The stator assembly 2 also includes a circuit board 22, which is mounted on the lower housing 14 and electrically connected to the coil 212.

[0073] In one embodiment, the housing 1 is further provided with two limiting plates 12, which are spaced apart on both sides of the mass block 31 along the first direction. The limiting plates 12 are used to abut against the outer edge of the mass block 31 when the mass block 31 vibrates along the first direction.

[0074] The limiting plate 12 is used to abut against the outer edge of the mass block 31 when the mass block 31 vibrates along the first direction, thereby limiting the range of motion and preventing the mass block 31 from vibrating too much, which could lead to structural collision or damage. The limiting plate 12 effectively constrains the vibration boundary of the mass block 31, ensuring that the vibration device 100 maintains a stable working state during high-frequency vibration.

[0075] The present invention also provides an electronic device that applies the above-described vibration device 100. The specific structure of the vibration device 100 is as described in the above embodiments. Specifically, the electronic device may be a handle, mobile phone, tablet, or smart wearable device with vibration function. Since this electronic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0076] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vibration device, characterized in that, include: A housing, wherein a mounting cavity is formed within the housing; A stator assembly, comprising a coil structure mounted on the housing and located within the mounting cavity. An oscillator assembly, wherein the coil structure enables the oscillator assembly to vibrate relative to the stator assembly along a first direction when energized; the oscillator assembly includes a mass block disposed within the mounting cavity, two magnetic circuit structures, and two damping elements; elastic connectors are disposed on both sides of the mass block along the first direction; the mass block is elastically connected to the housing through the elastic connectors, and the mass block encloses an mounting space; the coil structure and the two magnetic circuit structures are both located within the mounting space; the two magnetic circuit structures are spaced apart along a second direction and enclose a magnetic gap; wherein the first direction is different from the second direction, and the coil structure is located within the magnetic gap; The mass block has grooves at both ends along the first direction, and a damping element is disposed in each groove. The grooves connect the mounting space with the outside of the mass block. The damping element includes a middle part and a first fixing part and a second fixing part located at both ends of the middle part along the first direction. The middle part passes through the groove. The first fixing part and the second fixing part are respectively located on both sides of the groove along the first direction. The first fixing part faces the coil structure and is spaced apart from or abuts against the coil structure. The second fixing part faces the elastic connector and is spaced apart from or abuts against the elastic connector.

2. The vibration device as described in claim 1, characterized in that, The coil structure includes an iron core and a coil wound on the iron core. The axis of the coil is parallel to the first direction. The first fixing part is directly opposite the iron core and spaced apart from the iron core. When the mass block vibrates along the first direction, the first fixing part can abut against the iron core. And / or, when the mass block vibrates along the first direction, the second fixing part abuts against the elastic connector.

3. The vibration device as described in claim 2, characterized in that, The iron core includes two pole shoes spaced apart along the first direction and a winding portion connected between the two pole shoes. The two pole shoes are respectively disposed corresponding to the two second fixing portions. Each pole shoe is used to abut against the first fixing portion disposed on the same side when the mass block vibrates along the first direction.

4. The vibration device as described in claim 1, characterized in that, The mass block groove has recesses on both sides along the first direction. The first fixing part is at least partially located in the recess on the side facing the installation space, and the second fixing part is at least partially located in the recess on the side away from the installation space. The size of the recess along the second direction is larger than the size of the groove along the second direction.

5. The vibration device as described in claim 4, characterized in that, The mass block is arranged in a ring shape. The mass block includes an inner wall facing the magnetic gap and an outer wall away from the magnetic gap. The inner wall and the outer wall are both provided with recesses near the groove. The dimensions of the second fixing part and the first fixing part along the second direction are larger than the dimensions of the middle part along the second direction. The second fixing part abuts against the position of the recess on the outer wall, and the first fixing part abuts against the position of the recess on the inner wall.

6. The vibration device as described in any one of claims 1 to 5, characterized in that, Each of the second fixing parts forms an inclined contact surface on the side edge away from the magnetic gap, and the contact surface is used to abut against the side of the elastic connector disposed on the same side as it toward the second fixing part.

7. The vibration device as described in claim 6, characterized in that, The elastic connector is a U-shaped elastic connector with its opening facing the mass block. The two ends of the opening of the elastic connector are a first end and a second end, respectively. The first end of each elastic connector is connected to the mass block. An inner stop block is provided on the side of each first end away from the mass block. The inner stop block is used to fix the corresponding first end to the mass block. The second end of each of the elastic connectors is connected to the housing, and an outer stop is provided on the side of each second end away from the housing. The outer stop is used to fix the corresponding second end to the housing.

8. The vibration device as described in any one of claims 1 to 5, characterized in that, The size of the middle portion along the third direction is smaller than the size of the corresponding groove along the third direction. The opening of the groove and the bottom wall of the groove are respectively located on both sides of the groove along the third direction. The middle portion is connected to the bottom wall of the groove so that the side of the middle portion facing the opening of the groove and the side wall of the groove form an overflow channel. The first direction, the second direction and the third direction are perpendicular to each other.

9. The vibration device as described in any one of claims 1 to 5, characterized in that, Each of the magnetic circuit structures includes a magnetic conductor and a magnetic component. Each magnetic conductor extends along the first direction and forms a mounting groove with its opening facing the magnetic gap. Two magnetic conductors are spaced apart along the second direction. The side of each magnetic conductor away from the opening is connected to the mass block. An overflow groove is provided at least one side of the corner of each mounting groove along a third direction. The magnetic component is bonded to the mounting groove by injection of adhesive. The first direction, the second direction, and the third direction are perpendicular to each other.

10. An electronic device, characterized in that, The electronic device is equipped with a vibration device as described in any one of claims 1 to 9.

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