Vibration device and electronic equipment

Abstract

The invention discloses a vibration device and electronic equipment, and relates to the technical field of micro vibration, the vibration device comprises a shell, a stator assembly and a vibrator assembly, and a mounting cavity is formed in the shell; the stator assembly comprises a coil structure, and the coil structure is located in the installation cavity. The vibrator assembly comprises a mass block arranged in the mounting cavity, two magnetic circuit structures and two damping pieces, elastic connecting pieces are arranged on the two sides of the mass block, and the mass block is elastically connected with the shell through the elastic connecting pieces; grooves are formed in the two ends, in the first direction, of the mass block respectively, damping pieces are arranged in the grooves, the grooves communicate with the installation space and the outer side of the mass block, each damping piece comprises a middle part, a first fixing part and a second fixing part, the first fixing parts and the second fixing parts are located at the two ends, in the first direction, of the middle parts, and the middle parts penetrate through the grooves. According to the invention, the damping member is in buffer contact with the coil structure, so that direct rigid collision between the mass block and the coil structure is effectively avoided, and the risk of damage to the rotor assembly and the coil structure is reduced.

Description

Technical Field

[0001] The present invention relates to the field of micro-vibration, and in particular to a vibration device and electronic equipment. Background Art

[0002] A vibration device is a device that converts electrical energy directly into linear motion. It does not require the intermediate transmission mechanism (such as gears, belts, etc.) of a traditional rotary motor. It has the advantages of high speed, high precision, low noise and simple structure. The vibration device is the core component for electronic devices to provide tactile feedback.

[0003] The vibration device in the prior art includes a stator assembly and a mover assembly. The coil structure of the stator assembly interacts with the magnetic circuit structure in the mover assembly to cause the mover assembly to vibrate. However, the mover assembly is prone to collision with the coil structure during repeated vibrations. Long-term collisions 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 purpose of the present invention is to provide a vibration device and an electronic device, aiming to solve the problem in the prior art that a movable component and a coil structure are easily damaged due to long-term impact.

[0005] To achieve the above-mentioned object, the vibration device proposed by the present invention comprises: a housing, wherein a mounting cavity is formed in the housing; a stator assembly, the stator assembly comprising a coil structure, the coil structure being mounted on the housing and located within the mounting cavity, A vibrator assembly, wherein the coil structure enables the vibrator assembly to vibrate along a first direction relative to the stator assembly when energized; the vibrator assembly comprises a mass block disposed in the mounting cavity, two magnetic circuit structures, and two damping members, elastic connectors are disposed on both sides of the mass block along the first direction, the mass block is elastically connected to the housing via the elastic connectors, and the mass block forms an installation space, the coil structure and the two magnetic circuit structures are both located within the installation space, the two magnetic circuit structures are spaced apart along a second direction and form 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 is respectively provided with grooves at both ends along the first direction, and a damping member is provided in each of the grooves. The grooves connect the installation space with the outside of the mass block, and the damping member 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 is passed through the groove, and 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 abutted against the coil structure, and the second fixing part faces the elastic connecting part and is spaced apart from or abutted against the elastic connecting part.

[0006] In one embodiment, the coil structure includes an iron core and a coil wound around the iron core, the axis of the coil is parallel to the first direction, the first fixing portion is opposite to the iron core and is spaced apart from the iron core, and the first fixing portion can abut against the iron core when the mass block vibrates along the first direction; And / or, when the mass block vibrates along the first direction, the second fixing portion abuts against the elastic connecting member.

[0007] 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 provided corresponding to two second fixed portions, and each pole shoe is used to abut against the first fixed portion provided on the same side when the mass block vibrates along the first direction.

[0008] In one embodiment, recessed portions are provided on both sides of the mass block groove along the first direction, the first fixing portion is at least partially located in the recessed portion on the side facing the installation space, and the second fixing portion is at least partially located in the recessed portion on the side away from the installation space, and the size of the recessed portion along the second direction is larger than the size of the groove along the second direction.

[0009] 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 recessed portion is provided on the inner wall and the outer wall at positions close to the groove. The dimensions of the second fixing portion and the first fixing portion along the second direction are larger than the dimensions of the middle portion along the second direction, and the second fixing portion abuts against the position of the recessed portion on the outer wall, and the first fixing portion abuts against the position of the recessed portion on the inner wall.

[0010] In one embodiment, an edge of one side of each second fixing portion facing away from the magnetic gap forms an inclined contact surface, and the contact surface is used to abut against a side of the elastic connecting member arranged on the same side thereof facing the second fixing portion.

[0011] 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 respectively a first end and a second end, the first end of each elastic connector is connected to the mass block, and an inner stopper is provided on a side of each first end facing away from the mass block, the inner stopper being used to fix the corresponding first end and the mass block; The second end of each elastic connecting member is connected to the shell, and an outer stopper is provided on the side of each second end facing away from the shell, and the outer stopper is used to fix the corresponding second end and the shell.

[0012] In one embodiment, the dimension of the middle portion along the third direction is smaller than the dimension of the corresponding groove along the third direction, the opening and the bottom wall of the groove are respectively located on both sides of the groove along the third direction, and 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 groove side wall of the groove form a glue overflow channel, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0013] In one embodiment, each of the magnetic circuit structures includes a magnetic conductive part and a magnetic part, each of the magnetic conductive parts extends along the first direction and forms an installation slot with a slot facing the magnetic gap, two of the magnetic conductive parts are arranged at intervals along the second direction, and each of the magnetic conductive parts is connected to the mass block on the side facing away from the slot, and a glue overflow groove is provided at the corner of each of the installation slots along at least one side of the third direction, and the magnetic part is bonded to the installation slot by glue injection, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0014] The present invention also provides an electronic device, wherein the electronic device is equipped with the vibration device.

[0015] The technical solution of the present invention introduces a damping member into the vibration device, and grooves are provided on both sides of the mass block along the first direction, and a damping member is provided in each groove, so that when the mass block vibrates in the first direction, it can make buffering contact with the coil structure through the first fixed part of the damping member, thereby effectively avoiding direct hard collision between the mass block and the coil structure, and significantly reducing the risk of damage to the movable component and the coil structure caused by long-term repeated impact. The second fixed part makes buffering contact with the elastic connecting member, avoiding excessive impact of the mass block on the elastic connecting member, and improving the service life of the elastic connecting member; at the same time, the damping member also has certain buffering and rebound capabilities, which helps to improve the stability and service life of the vibration device; at the same time, the middle part of the damping member is passed through the groove, so that the damping member can maintain a stable installation state under the constraint of the groove, and will not shift during the vibration process, thereby ensuring that the buffering effect of the damping member between the first fixed part and the coil structure, and the second fixed part and the elastic connecting member is always in an effective state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the explosion structure of a vibration device provided in one embodiment of the present invention; Figure 2 A schematic diagram of a portion of the structure of a vibration device provided by an embodiment of the present invention at a viewing angle; Figure 3 A schematic diagram of a portion of the structure of a vibration device provided by an embodiment of the present invention from another perspective; Figure 4 A schematic structural diagram of a mass block and a damping element of a vibration device provided in one embodiment of the present invention; Figure 5 A schematic structural diagram of a housing and a stator assembly of a vibration device provided in one embodiment of the present invention; Figure 6 A schematic structural diagram of a magnetic conductive component of a vibration device provided in one embodiment of the present invention; Figure 7 A schematic structural diagram of a magnetic conductive component and a magnetic component of a vibration device provided in one embodiment of the present invention.

[0018] Description of Figure Numbers: 100. Vibration device; 1. Housing; 11. Mounting cavity; 12. Stop plate; 13. Upper housing; 14. Lower housing; 2. Stator assembly; 21. Coil structure; 211. Iron core; 212. Coil; 213. Pole shoe; 214. Winding unit; 22. Circuit board; 3. Vibrator assembly; 31. Mass block; 311. Groove; 312. Groove bottom wall; 313. Opening; 314. Inner wall; 315. Outer wall; 316. Recessed portion; 32. Magnetic circuit structure; 321. Magnetic conductive member; 3211. Bottom edge; 32111. Recess; 3212, side; 32121, connecting section; 32122, abutting section; 32123, abutting surface; 3213, yoke strip; 3214, slope; 322, magnetic part; 323, mounting groove; 324, overflow glue groove; 33, mounting space; 34, magnetic gap; 35, overflow glue channel; 4, elastic connecting part; 41, first end; 42, second end; 43, inner stop block; 44, outer stop block; 5, damping part; 51, middle part; 52, first fixing part; 53, second fixing part; 531, contact surface.

[0019] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] The vibration device in the prior art includes a stator assembly and a mover assembly. The coil structure of the stator assembly interacts with the magnetic circuit structure in the mover assembly to cause the mover assembly to vibrate. However, the mover assembly is prone to collision with the coil structure during repeated vibrations, and long-term impact can easily damage the mover assembly and the coil structure.

[0024] To solve the above problems, the present invention provides a vibration device 100 .

[0025] Please combine Figures 1 to 4The vibration device 100 of this embodiment includes a shell 1, a stator assembly 2 and a vibrator assembly 3. A mounting cavity 11 is formed in the shell 1; the stator assembly 2 includes a coil structure 21, which is installed in the shell 1 and located in the mounting cavity 11. When energized, the coil structure 21 can enable the vibrator assembly 3 to vibrate along a first direction relative to the stator assembly 2; the vibrator assembly 3 includes a mass block 31, two magnetic circuit structures 32 and two damping members 5 arranged in the mounting cavity 11. Elastic connecting members 4 are provided on both sides of the mass block 31 along the first direction. The mass block 31 is elastically connected to the shell 1 through the elastic connecting members 4, and the mass block 31 encloses an installation space 33. The coil structure 21 and the two magnetic circuit structures 32 are all located in the installation space 33. The two magnetic circuit structures 32 are spaced apart along the second direction. The first and second fixing portions 52 and 53 are arranged to form a magnetic gap 34, wherein the first direction is different from the second direction, and the coil structure 21 is located in the magnetic gap 34; grooves 311 are respectively provided at both ends of the mass block 31 along the first direction, and a damping member 5 is provided in each groove 311. The grooves 311 connect the installation space 33 with the outside of the mass block 31, and the damping member 5 includes a middle portion 51 and a first fixing portion 52 and a second fixing portion 53 located at both ends of the middle portion 51 along the first direction. The middle portion 51 is passed through the groove 311, and the first fixing portion 52 and the second fixing portion 53 are respectively located on both sides of the groove 311 along the first direction. The first fixing portion 52 faces the coil structure 21 and is spaced apart or abutted with the coil structure 21, and the second fixing portion 53 faces the elastic connecting member 4 and is spaced apart or abutted with the elastic connecting member 4.

[0026] It is understandable that 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, and the coil structure 21 is fixed to the shell 1, so the magnetic circuit structure 32 will be driven to vibrate, and the magnetic circuit structure 32 is connected to the mass block 31, and the mass block 31 is connected to the shell 1, thereby driving the mass block 31 to vibrate together through the magnetic circuit structure 32. It should be noted that the first direction is Figure 3 The left and right directions in the second direction are Figure 3 The front-to-back direction.

[0027] The technical solution of the present invention is to introduce a damping member 5 into the vibration device 100, and grooves 311 are provided on both sides of the mass block 31 along the first direction, and a damping member 5 is provided in each groove 311, so that when the mass block 31 vibrates in the first direction, the first fixing portion 52 of the damping member 5 can buffer the contact with the coil structure 21, thereby effectively avoiding a direct hard collision between the mass block 31 and the coil structure 21, significantly reducing the risk of damage to the mover assembly and the coil structure 21 caused by long-term repeated impacts, and the second fixing portion 53 buffers the contact with the elastic connecting member 4 to avoid the mass block 31 from vibrating in the first direction. The block 31 produces an excessive impact on the elastic connector 4, thereby increasing the service life of the elastic connector 4; at the same time, the damping member 5 also has a certain buffering and rebound ability, which helps to improve the stability and service life of the vibration device 100; at the same time, the middle part 51 of the damping member 5 is passed through the groove 311, so that the damping member 5 can maintain a stable installation state under the constraint of the groove 311, and will not deviate during the vibration process, thereby ensuring that the buffering effect of the damping member 5 between the first fixing part 52 and the coil structure 21, and the second fixing part 53 and the elastic connector 4 is always in an effective state.

[0028] See also 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 fixed portion 52 is opposite to the iron core 211 and is spaced apart from the iron core 211, and when the mass block 31 vibrates along the first direction, the first fixed portion 52 can abut against the iron core 211.

[0029] The axial direction of the coil 212 is parallel to the first direction, so that the magnetic field generated by the coil 212 is concentratedly distributed along the first direction, so that the magnetic field force acting on the vibrator assembly 3 acts along the first direction, thereby improving the controllability and movement stability of the vibration path of the vibrator assembly 3; the first fixed portion 52 is opposite to 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 fixed portion 52 can abut against the iron core 211, so that when the vibration amplitude of the mass block 31 is too large, the damping member 5 can generate buffering contact with the iron core 211 through the first fixed portion 52, thereby effectively absorbing and dispersing the impact force, and avoiding the mass block 31 directly colliding with the iron core 211 or the coil 212; the spacing between the first fixed portion 52 and the iron core 211 ensures that the normal displacement during the vibration process will not be affected, and the buffering effect only occurs at the extreme displacement, ensuring that the vibration device 100 has both high sensitivity and safety protection function.

[0030] Please combine Figures 1 to 4 In one embodiment, when the mass block 31 vibrates along the first direction, the second fixing portion 53 abuts against the elastic connecting member 4 .

[0031] When the mass block 31 vibrates along the first direction, the second fixing portion 53 comes into buffering contact with the elastic connecting member 4 , thereby preventing the mass block 31 from generating excessive impact on the elastic connecting member 4 and improving the service life of the elastic connecting member 4 .

[0032] 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, and the two pole shoes 213 are respectively provided corresponding to two second fixing portions 53, and each pole shoe 213 is used to abut against the first fixing portion 52 provided on the same side when the mass block 31 vibrates along the first direction.

[0033] It is connected to the shell 1 through two pole shoes 213, and the two pole shoes 213 are respectively in contact with the first fixing parts 52 of the damping member 5 arranged on both sides of the mass block 31 along the first direction, ensuring that the mass block 31 can effectively buffer the pole shoes 213 through the first fixing parts 52 when vibrating, reducing mechanical wear and collision, avoiding damage to the pole shoes 213 or the mass block 31, and also reducing the noise generated during vibration.

[0034] Recesses 316 are provided on both sides of the groove 311 of the mass block 31 along the first direction, the first fixing portion 52 is at least partially located in the recessed portion 316 on the side facing the installation space 33, and the second fixing portion 53 is at least partially located in the recessed portion 316 on the side away from the installation space 33, and the size of the recessed portion 316 along the second direction is larger than the size of the groove 311 along the second direction.

[0035] The first fixing portion 52 and the second fixing portion 53 cooperate with the recessed portion 316, so that the damping member 5 is limited to be located in the groove 311 along the first direction, and the middle portion 51 cooperates with the recessed portion 311 so that the damping member 5 is limited to be located in the groove 311 along the second direction, so that the damping member 5 maintains a stable installation state under the constraint of the recessed portion 316, thereby preventing the damping member 5 from being offset or loosened 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 portion 52 is at least partially located toward the installation position. The first fixing portion 52 is located in the recessed portion 316 on one side of the installation space 33, so that the first fixing portion 52 has a clear limit position when it is spaced apart from or abuts the iron core 211, and can reliably play a buffering and protective role to avoid the inability to effectively contact the iron core 211 due to offset; the second fixing portion 53 is at least partially located in the recessed portion 316 on the side away from the installation space 33, so that the second fixing portion 53 can be supported and restricted by the recessed portion 316 when it is spaced apart from or abuts the elastic connecting member 4, preventing it from offsetting or failing during the vibration return stroke.

[0036] In one embodiment, the mass block 31 is arranged in a ring shape, and 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 recessed portion 316 is provided on the inner wall 314 and the outer wall 315 at positions close to the groove 311. The dimensions of the second fixing portion 53 and the first fixing portion 52 along the second direction are greater than the dimensions of the middle portion 51 along the second direction, and the second fixing portion 53 abuts against the position of the recessed portion 316 on the outer wall 315, and the first fixing portion 52 abuts against the position of the recessed portion 316 on the inner wall 314.

[0037] The mass block 31 is arranged in an annular shape, so that the overall mass distribution of the vibration device 100 is more uniform, which is beneficial to 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, so that the first fixing part 52 and the second fixing part 53 are respectively abutted against the two recessed parts 316 on the inner wall 314 and the outer wall 315, and the middle part 51 is penetrated into the groove 311, so that the damping member 5 can form a "wide end limiting, narrow end penetrating" structural relationship on both sides along the first direction, thereby providing a stable limiting effect, preventing the damping member 5 from deviating toward the coil structure 21 or the elastic connecting member 4, and improving the overall stability of the damping member 5.

[0038] An edge of one side of each second fixing portion 53 facing away from the magnetic gap 34 forms an inclined contact surface 531 , and the contact surface 531 is used to abut against a side of the elastic connector 4 arranged on the same side thereof facing the second fixing portion 53 .

[0039] The edge of one side of each second fixing portion 53 facing away from the magnetic gap 34 forms a contact surface 531 inclined along the second direction. The contact surface 531 abuts against the side of the elastic connecting member 4 arranged on the same side facing the second fixing portion 53, so that the side of the elastic connecting member 4 facing the second fixing portion 53 can also form an oblique contact with the contact surface 531, playing the dual role of buffering and guiding and limiting, reducing instantaneous impact force, and extending the service life of the structure.

[0040] In one embodiment, the elastic connector 4 is a U-shaped elastic connector 4 with an opening facing the mass block 31, and the two ends of the opening of the elastic connector 4 are respectively a first end 41 and a second end 42. The first end 41 of each elastic connector 4 is connected to the mass block 31, and an inner stop block 43 is provided on the side of each first end 41 facing away from the mass block 31, and the inner stop block 43 is used to fix the corresponding first end 41 and the mass block 31; the second end 42 of each elastic connector 4 is connected to the shell 1, and an outer stop block 44 is provided on the side of each second end 42 facing away from the shell 1, and the outer stop block 44 is used to fix the corresponding second end 42 and the shell 1.

[0041] Through the design of the inner stop block 43 and the outer stop block 44, the connection between the elastic connector 4 and the mass block 31 and the shell 1 is strengthened, the mechanical strength and fatigue resistance of the connection of the elastic connector 4 are improved, and the elastic connector 4 is effectively prevented from loosening or deformation due to long-term vibration.

[0042] The dimension of the middle portion 51 along the third direction is smaller than the dimension 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 groove side wall of the groove 311 form a glue overflow channel 35.

[0043] It should be noted that the third direction is Figure 3 In the up and down directions, the first direction, the second direction and the third direction are perpendicular to each other.

[0044] The overflow glue channel 35 allows both sides of the middle part 51 along the third direction to be bonded by glue, thereby improving the stability of the middle part 51, thereby improving the reliability and stability of the bonding between the middle part 51 and the mass block 31. The overflow glue channel 35 is used to provide space for glue, so that excess glue can fill the overflow glue channel 35, increase the bonding area, and disperse vibration stress.

[0045] Please combine Figure 3 、 Figure 6 and Figure 7 In one embodiment, each of the magnetic circuit structures 32 includes a magnetic conductive part 321 and a magnetic part 322, each of the magnetic conductive parts 321 extends along the first direction and forms a mounting groove 323 with a slot facing the magnetic gap 34, and the two magnetic conductive parts 321 are spaced apart along the second direction, and the side of each magnetic conductive part 321 facing away from the slot is connected to the mass block 31, and a glue overflow groove 324 is opened at the corner of each of the mounting grooves 323 along at least one side of the third direction, and the magnetic part 322 is bonded to the mounting groove 323 by glue injection.

[0046] The overflow glue groove 324 provides overflow glue space for glue injection, so that the glue forms a thickened glue layer at the corner, increases the bonding area between the magnetic component 321 and the magnetic component 322, and disperses the 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 bonding between the magnetic component 321 and the magnetic component 322 more stable and not easy to debond, thereby avoiding debonding and failure between the magnetic component 321 and the magnetic component 322 caused by repeated vibration of the magnetic circuit structure 32.

[0047] In one embodiment, the magnetic conductive member 321 includes a bottom edge 3211 and two side edges 3212 respectively arranged on both sides of the bottom edge 3211 along the 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, and each side edge 3212 and the bottom edge 3211 are connected to both sides along the third direction. A glue overflow groove 324 is formed. Each glue overflow groove 324 is recessed from the corresponding side edge 3212 along the third direction toward the other side edge 3212.

[0048] The three-sided structure formed by the bottom edge 3211 and the two side edges 3212 forms a stable covering for the magnetic part 322, so that the magnetic part 322 can be bonded to the magnetic conductive part 321 through three sides. Compared with the traditional planar groove structure, it has a larger bonding area and higher anti-deviability, preventing the magnetic part 322 from being displaced or eccentric during vibration, thereby improving the accuracy of the magnetic circuit centering. The connection between the bottom edge 3211 and the side edge 3212 is usually the area where the bending stress is most concentrated. After the overflow glue groove 324 is set, it not only provides a space for accommodating glue, but also provides a fine-tuning avoidance space for metal deformation, preventing the metal from turning outward or collapsing inward during the bending process, causing the slot to deform, thereby avoiding interference or dimensional deviation during the installation of the magnetic part 322.

[0049] It can be understood that, usually, the magnetic component 322 is a magnet, and the magnetic conductive component 321 is a washer.

[0050] In one embodiment, recesses 32111 are provided at both ends of the bottom edge 3211 along the first direction. The recesses 32111 are located on the side of the bottom edge 3211 facing the magnetic member 322 , and are recessed away from the magnetic member 322 .

[0051] At the same time, the recesses 32111 arranged at both ends of the bottom edge 3211 along the first direction are recessed in the direction away from the magnetic part 322, so that the recesses 32111 are arranged at the corners of the mounting groove 323, that is, the bending part of the magnetic conductive part 321. The recesses 32111 serve as avoidance space to absorb the extrusion of the magnetic conductive part 321 when it is bent to form the mounting groove 323, thereby avoiding assembly interference caused by deformation of the extrusion at the inner corner, thereby ensuring the dimensional accuracy of the magnetic circuit structure 32.

[0052] One end of the side 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 3212, and the side 3212 is bent from the connection between it and the recess 32111 along the second direction toward the other magnetic conductive part 321 to form the corner.

[0053] The thickness of the recess 32111 is the same as that 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 recess 32111 and the side 3212 have the same thickness. After the pressing is completed, the side 3212 is bent again, so that the extruded material generated on the inner side of the bend is absorbed by the recess 32111 and the side 3212 to ensure the dimensional accuracy of the magnetic circuit structure 32.

[0054] In one embodiment, each side edge 3212 includes a connecting section 32121 and an abutting section 32122, and the abutting section 32122 has a side facing the mounting groove 323 to form an abutting surface 32123 for abutting against the magnetic member 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 bottom plate along the third direction, and the edges of the two side edges 3212 of the recess 32111 and the connecting section 32121 along the third direction are spliced ​​to form a glue overflow groove 324.

[0055] The abutment section 32122 forms an independent abutment surface 32123, so that the magnetic part 322 can be stably fitted with the magnetic conductive part 321, providing reliable end face positioning. The width of the recess 32111 and the connecting part along the third direction is the same, but smaller than the width of the bottom plate along the third direction, so that the two sides of the recess 32111 and the connecting part along the third direction can also be used to provide overflow space for glue. The two side edges 3212 of the recess 32111 and the connecting section 32121 along the third direction form overflow grooves 324, so that the overflowed glue can form a thickened anchoring structure in the overflow grooves 324, thereby enhancing the bonding firmness between the magnetic conductive part 321 and the magnetic part 322.

[0056] In one embodiment, the bottom edge 3211 protrudes on one side along the third direction to form a yoke strip 3213, the first direction, the second direction and the third direction are perpendicular to each other, and the yoke strip 3213 forms a slope 3214 on one side facing the mounting slot 323, and the slope 3214 is inclined in a direction away from the bottom edge 3211 toward a direction away from the mounting slot 323.

[0057] It should be noted that the third direction is Figure 3 The up and down directions in .

[0058] The bottom edge 3211 protrudes on one side along the third direction to form a magnetic yoke strip 3213, which increases the size of the magnetic conductive part 321 in the third direction, making it have stronger magnetic conductivity, which is conducive to closing the magnetic circuit and increasing the magnetic flux density; the magnetic yoke strip 3213 forms a slope 3214 on the side facing the mounting slot 323, and the slope 3214 is inclined in the direction away from the bottom edge 3211 and in the direction away from the mounting slot 323, serving as a diffusion and accumulation area for the glue during the injection process, effectively providing a glue overflow space, thereby further increasing the bonding strength between the magnetic part 322 and the magnetic conductive part 321.

[0059] In one embodiment, the housing 1 includes an upper shell 13 and a lower shell 14 , which together form an installation cavity 11 . The stator assembly 2 also includes a circuit board 22 , which is mounted on the lower shell 14 and electrically connected to the coil 212 .

[0060] In one embodiment, two limit plates 12 are further provided on the shell 1. The two limit plates 12 are spaced apart on both sides of the mass block 31 along the first direction. The limit 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.

[0061] The limit 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 and causing structural collision or damage; the limit 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.

[0062] The present invention also provides an electronic device that incorporates the aforementioned vibration device 100. The specific structure of the vibration device 100 is similar to that of the aforementioned embodiments. Specifically, the electronic device may be a handle, mobile phone, tablet, or smart wearable device with a vibration function. Since the electronic device utilizes all of the technical solutions of all of the aforementioned embodiments, it at least possesses all of the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore, no further details will be given here.

[0063] The above are only optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the concept of the present invention, or direct / indirect application in other related technical fields are included in 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 in the housing; a stator assembly, the stator assembly comprising a coil structure, the coil structure being mounted on the housing and located within the mounting cavity, A vibrator assembly, wherein the coil structure enables the vibrator assembly to vibrate along a first direction relative to the stator assembly when energized; the vibrator assembly comprises a mass block disposed in the mounting cavity, two magnetic circuit structures, and two damping members, elastic connectors are disposed on both sides of the mass block along the first direction, the mass block is elastically connected to the housing via the elastic connectors, and the mass block forms an installation space, the coil structure and the two magnetic circuit structures are both located within the installation space, the two magnetic circuit structures are spaced apart along a second direction and form 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 is respectively provided with grooves at both ends along the first direction, and a damping member is provided in each of the grooves. The grooves connect the installation space with the outside of the mass block, and the damping member 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 is passed through the groove, and 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 abutted against the coil structure, and the second fixing part faces the elastic connecting part and is spaced apart from or abutted against the elastic connecting part.

2. The vibration device according to claim 1, wherein The coil structure includes an iron core and a coil wound around the iron core, wherein the axis of the coil is parallel to the first direction, the first fixing portion is opposite to the iron core and is spaced apart from the iron core, and the first fixing portion can abut against the iron core when the mass block vibrates along the first direction; And / or, when the mass block vibrates along the first direction, the second fixing portion abuts against the elastic connecting member.

3. The vibration device according to claim 2, wherein 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 arranged corresponding to two second fixing portions, and each pole shoe is used to abut against the first fixing portion arranged on the same side when the mass block vibrates along the first direction.

4. The vibration device according to claim 1, wherein Recessed portions are provided on both sides of the mass block groove along the first direction, the first fixing portion is at least partially located in the recessed portion on the side facing the installation space, and the second fixing portion is at least partially located in the recessed portion on the side away from the installation space, and the size of the recessed portion along the second direction is larger than the size of the groove along the second direction.

5. The vibration device according to claim 4, wherein The mass block is arranged in a ring shape, and includes an inner wall facing the magnetic gap and an outer wall away from the magnetic gap. The recessed portion is provided on the inner wall and the outer wall at positions close to the groove. The dimensions of the second fixing portion and the first fixing portion along the second direction are greater than the dimensions of the middle portion along the second direction, and the second fixing portion abuts against the position of the recessed portion on the outer wall, and the first fixing portion abuts against the position of the recessed portion on the inner wall.

6. The vibration device according to any one of claims 1 to 5, characterized in that An edge of one side of each second fixing portion facing away from the magnetic gap forms an inclined contact surface, and the contact surface is used to abut against a side of the elastic connecting member arranged on the same side thereof facing the second fixing portion.

7. The vibration device according to claim 6, wherein 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 respectively a first end and a second end, the first end of each elastic connector is connected to the mass block, and an inner stopper is provided on the side of each first end facing away from the mass block, the inner stopper is used to fix the corresponding first end and the mass block; The second end of each elastic connecting member is connected to the shell, and an outer stopper is provided on the side of each second end facing away from the shell, and the outer stopper is used to fix the corresponding second end and the shell.

8. The vibration device according to any one of claims 1 to 5, characterized in that The dimension of the middle portion along the third direction is smaller than the dimension of the corresponding groove along the third direction, the opening and the bottom wall of the groove are respectively located on both sides of the groove along the third direction, and 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 groove side wall of the groove form a glue overflow channel, wherein the first direction, the second direction and the third direction are perpendicular to each other.

9. The vibration device according to any one of claims 1 to 5, characterized in that Each of the magnetic circuit structures includes a magnetic conductive part and a magnetic part. Each of the magnetic conductive parts extends along the first direction and forms an installation slot with a slot facing the magnetic gap. The two magnetic conductive parts are arranged at intervals along the second direction. The side of each magnetic conductive part facing away from the slot is connected to the mass block, and a glue overflow groove is provided at the corner of each of the installation slots along at least one side of the third direction. The magnetic part is bonded to the installation slot by glue injection, wherein 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 applied with the vibration device according to any one of claims 1 to 9.

Images