CN117202046A

CN117202046A - Vibration sounding monomer and electronic equipment

Info

Publication number: CN117202046A
Application number: CN202311271032.0A
Authority: CN
Inventors: 刘华伟; 李�杰; 朱婷; 赵国栋
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2023-12-08

Abstract

The invention discloses a vibration sounding monomer and electronic equipment, wherein the vibration sounding monomer comprises a fixing component, a first vibration system and a second vibration system, the fixing component comprises a bracket and a magnetic circuit system fixed on the bracket, the first vibration system and the second vibration system are respectively arranged on two opposite sides of the fixing component, a central magnetic part comprises a central magnetic guide plate, a plurality of first sub-center magnets distributed at intervals along a second direction and second sub-center magnets arranged on two sides of a third direction of the plurality of first sub-center magnets, a driving coil is provided with two long edges which are oppositely arranged, the two long edges are respectively arranged opposite to the two adjacent first sub-center magnets along the first direction, the gap between the two adjacent first sub-center magnets is less than or equal to 1mm along the second direction, and a supporting backboard is arranged on one side of the driving coil, which is opposite to the first sub-center magnets and is a magnetic guide piece. The vibration sounding monomer has compact structure and good sounding and vibration effects.

Description

Vibration sounding monomer and electronic equipment

Technical Field

The invention relates to the field of electroacoustic equipment, in particular to a vibration sounding monomer and electronic equipment.

Background

Intelligent terminal devices, especially mobile phone products, often need to have both audio experience and vibrotactile feedback experience functions. Wherein the audio experience is from a sound generating unit and the vibrotactile feedback experience is from a vibration unit.

In the related art, a vibration sound generating module in which a sound generating unit and a vibration unit are integrated is proposed. The sound generating unit and the vibration unit are separately arranged and respectively formed into independent control units, and the sound generating unit and the vibration unit are stacked and arranged in the shell of the vibration sound generating module. The structure can integrate the sounding unit and the vibration unit, but the assembly space occupied by the vibration sounding module is too large, so that the miniaturization and the light weight design of the terminal equipment are affected.

Moreover, the two ends of the elastic connecting piece of the vibration sounding module are respectively connected with the module shell and the vibrator assembly, when the model of the vibration sounding module changes, the vibration unit needs to adjust the structural design of the elastic connecting piece according to the change of the vibration sounding module, modularization and standardization design of the vibration sounding unit cannot be realized, and production efficiency is reduced.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the vibration sounding monomer which has the advantages of simple and compact structure and good sounding and vibration effects.

The invention also provides electronic equipment with the vibration sounding monomer.

A vibration sound producing monomer according to an embodiment of the first aspect of the present invention includes: the fixing assembly comprises a bracket and a magnetic circuit system fixed on the bracket, the magnetic circuit system comprises a magnetic yoke, a central magnetic part and a side magnetic part, the central magnetic part and the side magnetic part are respectively arranged on the magnetic yoke, and the side magnetic part is arranged on the outer side of the central magnetic part and is spaced from the central magnetic part to define a magnetic gap; the first vibration system and the second vibration system are respectively arranged on two opposite sides of the fixed assembly, the first vibration system vibrates along a first direction and is used for vibrating and sounding, and the first vibration system is fixed at the first end of the fixed assembly; the second vibration system vibrates along a second direction perpendicular to the first direction, the second vibration system comprises an elastic connecting piece and a vibrator assembly, the vibrator assembly is suspended through the elastic connecting piece, and the vibrator assembly comprises a balancing weight and a driving coil arranged on the balancing weight; the magnetic yoke comprises a body part and hollow holes arranged on the body part, the second sub-center magnet is arranged on the body part along the first direction, the hollow holes are at least partially opposite to the driving coil along the first direction; along the second direction, the interval gap between two adjacent first sub-center magnets is less than or equal to 1mm, one side of the driving coil, which is away from the first sub-center magnets, is provided with a supporting backboard which is a magnetic conduction piece.

According to the vibration sounding monomer of the embodiment of the first aspect of the invention, the magnetic circuit system comprises a plurality of first sub-center magnets which are distributed at intervals along the second direction and second sub-center magnets which are arranged at two ends of the third direction of the plurality of first sub-center magnets, so that two first sub-center magnets and two second sub-center magnets at four sides of the center magnets can form a magnetic loop with the side magnetic part, the defect of the edge part of the center magnets is reduced as much as possible, the influence on the magnetic field in the magnetic gap is reduced, and the sounding effect of the first vibration system is ensured. In addition, along the first direction, two adjacent first sub-center magnets are respectively opposite to two long sides of the driving coil, and the driving coil can do magnetic induction line movement between the two adjacent first sub-center magnets, so that the vibrator assembly can be driven to vibrate in a reciprocating manner, a part of magnetic field of the center magnetic part can be used as the magnetic field of the second vibration system, the magnetic field utilization rate of the center magnetic part can be improved, a set of magnetic circuit system is saved, and the production cost is reduced. In addition, through setting up the support backplate that magnetic conduction material was made in the one side of driving coil dorsad first sub-center magnet, the support backplate can play the effect of gathering the magnetic induction line, promotes the magnetic field intensity who acts on driving coil to can make the clearance of two adjacent first sub-center magnet intervals less than or equal to 1mm, can increase first sub-center magnet's size and volume under the prerequisite of the same installation space from this, increase magnetic field intensity.

According to some embodiments of the invention, the balancing weight is provided with a mounting hole penetrating along a first direction, the driving coil is located in the mounting hole, the supporting backboard is located at one side of the balancing weight away from the first vibration system and opposite to the mounting hole, and the driving coil is supported on the supporting backboard.

According to some embodiments of the invention, the projections of the plurality of first sub-center magnets along the first direction are all located inside the edge of the hollowed-out hole, and the plurality of first sub-center magnets extend into the hollowed-out hole along the first direction.

In some embodiments of the invention, a plurality of the first sub-center magnets and a side of the body portion proximate the second vibration system are substantially flush; and/or the body part of the edge of the hollowed hole of the magnetic yoke is concavely provided with a glue containing groove, and the glue containing groove is internally provided with fixing glue for fixedly connecting the body part with the first sub-center magnet.

According to some embodiments of the invention, the first vibration system comprises a diaphragm assembly and a voice coil, one end of the voice coil is connected with the diaphragm assembly, and the other end of the voice coil is inserted into the magnetic gap; the side magnet part comprises side magnets, the side magnets are also arranged on the body part, the side magnets, the first sub-center magnets and the second sub-center magnets are magnetized along the first direction, adjacent side magnets and the first sub-center magnets and adjacent two side magnets are opposite in magnetizing direction, and adjacent side magnets and the second sub-center magnets are opposite in magnetizing direction along the third direction.

According to some embodiments of the invention, the first vibration system and the second vibration system are respectively fixed at opposite ends of the fixed assembly, and two ends of the elastic connecting piece are respectively connected with the vibrator assembly and the second end of the fixed assembly.

In some embodiments of the present invention, two ends of the elastic connection member are respectively connected to the vibrator assembly and the bracket, the bracket has a mounting portion extending to the second end of the fixing assembly, and the elastic connection member is fixedly connected to the mounting portion.

According to some embodiments of the invention, the elastic connection is connected to the magnetically permeable yoke.

In some embodiments of the present invention, the magnetic yoke further includes a first supporting frame disposed at two ends of the body portion, one end of the elastic connecting member is connected to the first supporting frame, and the other end of the elastic connecting member is connected to the balancing weight.

In some embodiments of the invention, the first supporting frame and the body portion are of a split structure and are formed of different materials.

In some embodiments of the present invention, the first supporting frame further has portions disposed at the other two ends of the body portion, and the first supporting frame has a ring-shaped structure.

In some embodiments of the present invention, a side portion of the body portion of the magnetic yoke extending in the second direction is provided with a limiting portion extending toward the second vibration system direction, and a side portion of the weight block extending in the second direction is provided with a limiting groove for accommodating the limiting portion, and in the second direction, a width of the limiting groove is larger than a width of the limiting portion.

In some implementations of the present invention, the vibration sounding unit further includes a cover plate located at a side of the second vibration system remote from the first vibration system, and the cover plate is connected with an end of the first support frame remote from the body portion to define an installation space of the second vibration system.

In some embodiments of the present invention, a plurality of grooves are formed at one end of the first support frame connected with the body, a plurality of protruding portions are formed at the edge of the body, and the protruding portions extend into the grooves and are fixed at the bottoms of the grooves.

In some embodiments of the present invention, the support includes a second support frame, the outer periphery of the diaphragm assembly of the first vibration system is fixed to the second support frame, and an assembly portion for mounting the magnetic circuit system, which extends along the first direction, is disposed on a side of the second support frame, which is close to the second vibration system, and the assembly portion is inserted into the groove.

According to some embodiments of the invention, in the second direction, a gap between two adjacent first sub-center magnets is close to zero or equal to zero; and/or, in the third direction, a gap between adjacent first and second sub-center magnets is close to or equal to zero.

An electronic device according to an embodiment of the second aspect of the present invention includes the vibration sound producing monomer according to the above-described embodiment of the present invention.

According to the electronic equipment of the second aspect of the embodiment of the invention, by arranging the vibration sounding monomer, the structural design of the vibration sounding monomer is compact, the occupied assembly space is small, and the electronic equipment also has good sounding effect and vibration effect, so that the design requirement of the electronic equipment for lightening and thinning can be met, the electronic equipment also has good tone quality and vibration feedback effect, and the market competitiveness of the electronic equipment product is improved.

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

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an exploded structure of a vibrotactile monomer according to one embodiment of the invention;

FIG. 2 is a schematic partial structure of a vibrotactile element according to one embodiment of the invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 indicated by circle A;

FIG. 4 is a schematic diagram of a vibratory sound element at a first view angle in accordance with one embodiment of the present invention;

FIG. 5 is a schematic diagram of a vibratory sound element at a second view angle in accordance with one embodiment of the invention;

FIG. 6 is a top view of a central magnetic portion according to one embodiment of the present invention;

FIG. 7 is an exploded view of a second support structure according to one embodiment of the invention;

FIG. 8 is a vertical cross-sectional view of a vibrotactile element in a second direction, according to one embodiment of the invention;

FIG. 9 is a vertical cross-sectional view of a vibrotactile element in a third direction, according to one embodiment of the invention;

FIG. 10 is a side view of a vibrotactile monomer according to one embodiment of the invention;

FIG. 11 is a schematic partial structure of a vibrotactile element, according to one embodiment of the invention;

FIG. 12 is a schematic diagram of a vibratory sound element at a first view angle in accordance with one embodiment of the present invention;

Fig. 13 is a schematic diagram of a vibratory sound unit at another view angle according to one embodiment of the invention.

Reference numerals:

the sounding unit 100 is vibrated,

the magnetic circuit 1, the magnetic gap 1a, the spacer 1b, the center magnetic part 11, the center magnetic conductive plate 111, the first sub-center magnet 112, the second sub-center magnet 113, the side magnetic part 12, the side magnet 121, the side magnetic conductive plate 122, the first extension plate 1221, the second extension plate 1222, the magnetic conductive yoke 13, the body part 131, the protrusion 1311, the hollowed-out hole 131a, the first support 132, the groove 132a, the stopper 133,

the first vibration system 2, the diaphragm assembly 21, the diaphragm 211, the dome 212, the voice coil 22,

the second vibration system 3, the elastic connection member 31, the first elastic connection portion 311, the second elastic connection portion 312, the vibrator assembly 32, the weight 321, the fitting hole 321a, the limit groove 321b, the driving coil 322, the long side 3221, the short side 3222, the flexible circuit board 33, the flexible board portion 331, the first board portion 332, the second board portion 333, the support back 34,

the bracket 4, the second supporting frame 41, the fitting portion 411, the plastic material portion 412,

and a cover plate 5.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar components or components having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Hereinafter, a vibration/sound generation unit 100 according to an embodiment of the first aspect of the present invention will be described in detail with reference to fig. 1 to 13, and the vibration/sound generation unit 100 may be a speaker unit having both a sound generation function and a vibration function.

As shown in fig. 1 to 2, a vibration sound producing unit 100 according to an embodiment of the first aspect of the present invention includes: a fixed assembly, a first vibration system 2 and a second vibration system 3.

The fixing assembly may include a bracket 4 and a magnetic circuit system 1 fixed on the bracket 4, where the magnetic circuit system 1 includes a magnetic yoke 13, a central magnetic portion 11 and a side magnetic portion 12 respectively disposed on the magnetic yoke 13, and the side magnetic portion 12 is disposed on the outer side of the central magnetic portion 11 and is spaced from the central magnetic portion 11 to define a magnetic gap 1a.

As shown in fig. 8-9, the first vibration system 2 and the second vibration system 3 are respectively disposed on opposite sides of the fixed assembly, the first vibration system 2 vibrates in a first direction (e.g., a vertical z direction) for vibration sound, and the first vibration system 2 is fixed to a first end of the fixed assembly. For example, the first vibration system 2 may include a diaphragm assembly 21 and a voice coil 22, the diaphragm assembly 21 may include a diaphragm 211 and a dome 212, the diaphragm 211 is connected with the housing of the vibration sounding unit 100 or the magnetic circuit system 1, the dome 212 is disposed on the diaphragm 211, one end of the voice coil 22 is connected with the dome 212, and the other end of the voice coil 22 is inserted into the magnetic gap 1a. The second vibration system 3 vibrates along a second direction (e.g., a horizontal x direction) perpendicular to the first direction, the second vibration system 3 includes an elastic connection member 31 and a vibrator assembly 32, the vibrator assembly 32 is suspended by the elastic connection member 31, and the vibrator assembly 32 includes a balancing weight 321 and a driving coil 322 disposed on the balancing weight 321.

As shown in fig. 1 and 6, the central magnetic portion 11 includes a central magnetic conductive plate 111, a plurality of first sub-center magnets 112 spaced apart along a second direction, and second sub-center magnets 113 disposed on two sides of a third direction of the plurality of first sub-center magnets 112, the third direction is perpendicular to the first direction and the second direction, one sides of the plurality of first sub-center magnets 112 and the second sub-center magnets 113 away from the second vibration system 3 are connected to the central magnetic conductive plate 111, magnetizing directions of two adjacent first sub-center magnets 112 are opposite, the driving coil 322 has two long sides 3221 disposed opposite to each other, and the two long sides 3221 are disposed opposite to the two adjacent first sub-center magnets 112 along the first direction. In the second direction, the gap between two adjacent first sub-center magnets 112 is 1mm or less.

Specifically, the center magnet of the center magnetic part 11 may include a plurality of first sub-center magnets 112 spaced apart in the second direction and second sub-center magnets 113 provided at both ends of the plurality of first sub-center magnets 112 in the third direction, so that both of the two first sub-center magnets 112 and the two second sub-center magnets 113 on the four sides of the center magnet may form a magnetic circuit with the side magnetic part 12, the missing of the edge portion of the center magnet is reduced as much as possible, because the contribution of the edge portion of the center magnet to the magnetic field intensity in the magnetic gap 1a is maximized and the effect of the center portion of the center magnet is minimized, the above arrangement minimizes the influence on the magnetic field in the magnetic gap 1a, and the vibration sounding unit 100 of the present invention increases the vibration effect while ensuring minimal influence on the sounding effect. Along the first direction, two adjacent first sub-center magnets 112 are respectively opposite to two long sides 3221 of the driving coil 322, and the driving coil 322 can perform magnetic induction line motion between the two adjacent first sub-center magnets 112, so that the vibrator assembly 32 can be driven to vibrate in a reciprocating manner, and the vibration effect of the second vibration system 3 is achieved. Through the arrangement, part of the magnetic field of the central magnetic part 11 can be used as the magnetic field of the second vibration system 3, so that the magnetic field utilization rate of the central magnetic part 11 can be improved, one set of magnetic circuit system 1 is saved, and the production cost is reduced.

As shown in fig. 1 and 8, the magnetic yoke 13 includes a main body 131 and a hollow hole 131a formed in the main body 131, and the second sub-center magnet 113 is disposed in the main body 131, and the hollow hole 131a is at least partially opposite to the driving coil 322 along the first direction. By providing the hollow hole 131a in the body 131, the hollow hole 131a may be opposed to a part of the driving coil 322 or may be opposed to the entire driving coil 322, so that it is possible to ensure that the magnetic induction line smoothly passes through the yoke 13, and the magnetic field strength acting on the driving coil 322 can be increased, so that the vibration effect of the second vibration system 3 can be ensured.

Alternatively, the number of the driving coils 322 may be plural, the number of the hollow holes 131a may be plural, and the hollow holes 131a are disposed corresponding to the driving coils 322, so that the processing procedure of the hollow holes 131a may be simplified, and the processing efficiency may be improved. Optionally, the driving coils 322 may be multiple, the hollow holes 131a may also be multiple, and the multiple hollow holes 131a are set in one-to-one correspondence with the multiple driving coils 322, so that the open area of the magnetic conductive yoke 13 may be relatively reduced, thereby not only improving the structural strength of the magnetic conductive yoke 13, but also improving the magnetism gathering effect of the magnetic conductive yoke 13.

As shown in fig. 2 and 11, a supporting back plate 34 is disposed on a side of the driving coil 322 facing away from the first sub-center magnet 112, the supporting back plate 34 is a magnetic conductive member, and a gap between two adjacent first sub-center magnets 112 is less than or equal to 1mm.

In general, a wide space needs to be provided between two adjacent first sub-center magnets 112 to provide a vibration space for the driving coil 322, so as to avoid the driving force cancellation caused by the two long sides 3221 of the driving coil 322 entering the region below the same first sub-center magnets 112 during the vibration process. In contrast, in the above-described design of the present invention, since the magnetic concentration of the back plate 34 can increase the magnetic field strength B acting on the driving coil 322, L can be reduced in the case of obtaining the driving force factor BL of the same size, and thus, the driving coil 322 of the same outer diameter can be made larger in inner diameter, that is, the interval between the two long sides 3221 of the driving coil 322 can be increased, and the increased interval distance provides a part of vibration space for the driving coil 322, in which case, the interval between the adjacent two first sub-center magnets 112 can be reduced, and still a sufficient vibration space for the driving coil 322 can be ensured.

Alternatively, since the magnetic concentration of the support back plate 34 can raise the magnetic field strength B acting on the driving coil 322, in the case of obtaining the driving force factor BL of the same magnitude, for the driving coil 322 of the same inner and outer diameter size, the gap between the adjacent two first sub-center magnets 112 can be reduced, and during the vibration, the two long sides 3221 of the driving coil 322 are reciprocally moved, wherein a small portion of one long side 3221 and the other long side 3221 enter the region of the magnetic field under the same first sub-center magnet 112 to cancel a small portion of the driving force, and the cancelled portion is compensated by the increased magnetic field strength B.

Specifically, the gaps between two adjacent first sub-center magnets 112 may be 1mm or less, and may be disposed closely to each other. Alternatively, the gap between adjacent two first sub-center magnets 112 may be 0.3mm, 0.5mm, 0.7mm, 0.9mm, etc., whereby the above arrangement may increase the magnet size and volume, providing a greater magnetic field strength than if the adjacent two first sub-center magnets 112 had a wider gap.

According to the vibration/sound producing unit 100 of the first embodiment of the present invention, the magnetic circuit system 1 includes the plurality of first sub-center magnets 112 spaced apart along the second direction and the second sub-center magnets 113 disposed at both ends of the plurality of first sub-center magnets 112 in the third direction, so that two first sub-center magnets 112 and two second sub-center magnets 113 on four sides of the center magnets can form a magnetic circuit with the side magnetic portion 12, thereby reducing the loss of the edge portion of the center magnets as much as possible, reducing the influence on the magnetic field in the magnetic gap 1a, and ensuring the sound producing effect of the first vibration system 2. In addition, along the first direction, two adjacent first sub-center magnets 112 are respectively opposite to two long sides 3221 of the driving coil 322, and the driving coil 322 can make magnetic induction line movement between the two adjacent first sub-center magnets 112, so that the vibrator assembly 32 can be driven to vibrate reciprocally, and therefore, part of the magnetic field of the central magnetic part 11 can be used as the magnetic field of the second vibration system 3, the magnetic field utilization rate of the central magnetic part 11 can be improved, a set of magnetic circuit system 1 is saved, and the production cost is reduced. In addition, by arranging the supporting back plate 34 made of the magnetic conductive material on the side, facing away from the first sub-center magnets 112, of the driving coil 322, the supporting back plate 34 can play a role of gathering magnetic induction lines, and the magnetic field strength acting on the driving coil 322 is improved, so that a gap between two adjacent first sub-center magnets 112 is smaller than or equal to 1mm, and the size and the volume of the first sub-center magnets 112 can be increased on the premise of the same installation space, and the magnetic field strength is increased.

As shown in fig. 1, according to some embodiments of the present invention, the weight 321 is provided with a mounting hole 321a penetrating along the first direction, the driving coil 322 is located in the mounting hole 321a, the support back 34 is disposed on a side of the weight 321 away from the first vibration system 2 and opposite to the mounting hole 321a, and the driving coil 322 is supported on the support back 34. It can be appreciated that, compared with the blind hole, the assembly hole 321a penetrating the counterweight 321 along the first direction can reduce the processing difficulty of the assembly hole 321a, and then the driving coil 322 can be effectively supported by the support back plate 34, so that the normal operation of the second vibration system 3 is ensured.

In some embodiments of the present invention, the support back plate 34 closes part of the assembly hole 321a so that the wire inlet end and/or the wire outlet end of the driving coil 322 are exposed, that is, the surface area of the support back plate 34 is smaller than the open area of the assembly hole 321a, so that part of the assembly hole 321a and the driving coil 322 are exposed, the wire inlet end of the driving coil 322 can be exposed, the wire outlet end of the driving coil 322 can be exposed, and the wire inlet end and the wire outlet end of the driving coil 322 can be exposed at the same time, so that the thickness of the mating structure between the support back plate 34 and the driving coil 322 along the first direction can be reduced, thereby playing a role of thinning.

As shown in fig. 8, according to some embodiments of the present invention, the projections of the plurality of first sub-center magnets 112 along the first direction are located inside the edges of the hollowed holes 131a, and the plurality of first sub-center magnets 112 along the first direction extend into the hollowed holes 131 a. Therefore, the projections of the plurality of first sub-center magnets 112 along the first direction are located inside the edge of the hollow hole 131a, so that the magnetic induction line can be ensured to smoothly pass through the hollow hole 131a to act on the driving coil 322. Moreover, because one side of a plurality of first sub-center magnets and second sub-center magnets in the center magnetic part is connected with the center magnetic conduction plate, namely, the center magnetic conduction plate can assemble a plurality of first sub-center magnets and second sub-center magnets into a whole, and the second sub-center magnets are arranged on the body part, so that the first sub-center magnets are suspended, the first sub-center magnets can be controlled to be thickened and arranged to extend into the hollowed holes, the arrangement volume of the first sub-center magnets is increased, the distance between the center magnetic part 11 and the driving coil 322 can be reduced, the magnetic induction line strength acting on the driving coil 322 can be increased, and the vibration effect of the second vibration system 3 can be improved.

In some embodiments of the present invention, the plurality of first sub-center magnets 112 and the side of the body portion 131 near the second vibration system 3 are substantially flush, so that the mating structure of the first sub-center magnets 112 and the body portion 131 can be made more compact, and the distance between the first sub-center magnets 112 and the driving coil 322 can be reduced, increasing the magnetic induction line strength acting on the driving coil 322.

In other embodiments of the present invention, the body portion 131 at the edge of the hollow hole 131a of the magnetic yoke 13 is concavely provided with a glue containing groove, and a fixing glue is disposed in the glue containing groove to fixedly connect the body portion 131 and the first sub-center magnet 112, so that the connection strength between the first sub-center magnet 112 and the body portion 131 can be improved, and further the structural firmness of the magnetic circuit system 1 can be improved.

As shown in fig. 1 and 8, according to some embodiments of the present invention, the first vibration system 2 may include a diaphragm assembly 21 and a voice coil 22, one end of the voice coil 22 is connected to the diaphragm assembly 21, the other end of the voice coil 22 is inserted into the magnetic gap 1a, the side magnetic portion 12 includes a side magnet 121, and the side magnet 121 is also disposed on the body portion 131, so that two first sub-center magnets 112 and two second sub-center magnets 113 on four sides of the center magnet may each form a magnetic circuit with the side magnetic portion 12, and a magnetic gap is formed between the two sub-center magnets and the side magnetic portion 12, thereby ensuring the sound emitting effect of the first vibration system 2. Alternatively, the center magnet may be formed in a square structure, the side magnets 121 may be four, and the four side magnets 121 are provided outside the four sides of the center magnet.

In some embodiments of the present invention, the side magnets 121, the first sub-center magnets 112 and the second sub-center magnets 113 are magnetized in the first direction, and in the second direction, the magnetizing directions between the adjacent side magnets 121 and the first sub-center magnets 112 and between the adjacent two first sub-center magnets 112 are opposite, and in the third direction, the magnetizing directions between the adjacent side magnets 121 and the second sub-center magnets 113 are opposite.

Specifically, the second direction and the third direction may be located in the same horizontal plane, for example, the second direction may be a horizontal x-direction, the third direction may be a horizontal y-direction, and the first direction may be a vertical z-direction. Wherein the central magnetic part 11 includes a plurality of first sub-central magnets 112 arranged at intervals in the second direction and second sub-central magnets 113 arranged at intervals in the third direction. The side magnets 121, the first sub-center magnets 112 and the second sub-center magnets 113 are all magnetized in a first direction, for example, the first direction may be a vertical z direction, and one of the adjacent side magnets 121 and the first sub-center magnets 112 and one of the adjacent two first sub-center magnets 112 is magnetized in a top-down direction, and the other of the adjacent side magnets 121 and the first sub-center magnets 112 and the other of the adjacent two first sub-center magnets 112 is magnetized in a bottom-up direction. In the third direction, one of the adjacent side magnets 121 and the second sub-center magnet 113 is magnetized in the top-down direction, and the other of the adjacent side magnets 121 and the second sub-center magnet 113 is magnetized in the bottom-up direction.

Thus, by the above arrangement, the two first sub-center magnets 112 and the two second sub-center magnets 113 on the four sides of the center magnet can each form a magnetic circuit with the side magnetic portion 12, so that the magnetic field strength acting on the voice coil 22 can be increased, not only can the voice coil 22 sufficiently cut the magnetic induction lines in the magnetic gap 1a formed between the side magnetic portion 12 and the center magnetic portion 11, but also the driving coil 322 can sufficiently cut the magnetic induction lines formed by the two adjacent first sub-center magnets 112, and the sound emission and vibration effects of the vibration sound emitting unit 100 can be ensured.

According to some embodiments of the present invention, the first vibration system 2 and the second vibration system 3 are respectively fixed at two opposite ends of the fixing component, two ends of the elastic connection piece 31 are respectively connected with the vibrator component 32 and the second end of the fixing component, and since the fixing component is a part of the vibration sounding unit 100, two ends of the elastic connection piece 31 are both connected to the part of the vibration sounding unit 100, the vibration sounding unit 100 can be formed into an independent functional unit, that is, when the vibration sounding unit 100 can be used as a complete and independent functional unit to be fixed in a housing of the vibration sounding module, when the model of the vibration sounding module changes, only by adjusting the size and the shape of the housing, the vibration sounding unit 100 is not required to be changed, thereby realizing the modularization and standardization design of the vibration sounding unit 100, and greatly improving the applicability of the vibration sounding unit 100. Of course, in other embodiments, the second vibration system 3 may also be fixed to the housing of the vibration sound generating module through the elastic connection member 31, but when the model of the vibration sound generating module changes, the structural design of the elastic connection member 31 needs to be adjusted according to the change of the vibration sound generating module, so that the modularization and standardization of the vibration sound generating unit 100 cannot be realized.

In some embodiments of the present invention, two ends of the elastic connection member 31 are respectively connected to the vibrator assembly 32 and the support 4, the support 4 has a mounting portion extending to the second end of the fixing assembly, and the elastic connection member 31 is fixedly connected to the mounting portion, so that the vibration sounding unit 100 can be modularized and standardized, the mounting portion of the support 4 can suspend the vibrator assembly 32 through the elastic connection member 31, and the driving coil 322 can drive the balancing weight 321 to smoothly vibrate along the second direction under the action of the magnetic force of the magnetic circuit system 1.

As shown in fig. 12-13, according to some embodiments of the present invention, the elastic connection member 31 is connected to the magnetic yoke 13, and it can be understood that the magnetic yoke 13 is disposed on a side of the magnetic circuit system 1 near the vibrator assembly 32, and the elastic connection member 31 is connected to the magnetic yoke 13, so that the elastic connection member 31 can be conveniently fixed, and practical operation is convenient.

As shown in fig. 12 to 13, in some embodiments of the present invention, the magnetic yoke 13 further includes first supporting frames 132 disposed at two ends of the body portion 131, one end of the elastic connection member 31 is connected to the first supporting frames 132, and the other end of the elastic connection member 31 is connected to the balancing weight 321, so that the body portion 131 can be used to support the magnetic circuit portion, and the first supporting frames 132 can be used to support and connect the elastic connection member 31.

In the specific example shown in fig. 12 to 13, the first support 132 may be formed in a plate-shaped structure, one end of the first support 132 is connected to the body portion 131, and the other end of the first support 132 extends in a first direction toward a direction away from the body portion 131, whereby the first support 132 may define an installation space with the elastic connection member 31, facilitating installation and fixation of the elastic connection member 31.

Alternatively, the first supporting frame 132 and the body portion 131 may be formed as a split structure, the first supporting frame 132 is made of metal material, and the first supporting frame 132 and the body portion 131 may be fixed together by welding. Thereby, the connection strength between the first supporting frame 132 and the body portion 131 can be improved.

Alternatively, the first supporting frame 132 and the body 131 may be made of the same material, and the first supporting frame 132 and the body 131 may be made of different materials. For example, the body portion 131 may be made of a high magnetic conductive material (e.g., cobalt alloy material), and the first support 132 may be made of a metal material, a plastic material, or the like. Therefore, not only the structural strength requirement of the connecting elastic connecting piece 31 can be met, but also the magnetism gathering effect of the body part 131 can be improved, and the magnetic field strength of the magnetic circuit system 1 can be improved.

In a specific embodiment of the present invention, the body 131 may be formed into a square structure, and the first supporting frames 132 are two and respectively disposed at opposite angles of the body 131, so that the two elastic connecting members 31 may be formed into corresponding mounting structures, so that the stress of the vibrator assembly 32 is more balanced, and the running stability of the second vibration system 3 is improved.

As shown in fig. 12 to 13, in one embodiment of the present invention, the elastic connection member 31 is provided with a first elastic connection portion 311 extending in a second direction and a second elastic connection portion 312 extending in a third direction perpendicular to the first direction and the second direction, respectively, wherein one of the first elastic connection portion 311 and the second elastic connection portion 312 is connected to the first supporting frame 132, and the other of the first elastic connection portion 311 and the second elastic connection portion 312 is connected to the weight 321.

Specifically, the first direction may be a vertical z direction, the second direction may be a horizontal x direction, the third direction may be a horizontal y direction, and the third direction is perpendicular to the first direction and the second direction, respectively. Wherein, each elastic connecting piece 31 includes a first elastic connecting portion 311 and a second elastic connecting portion 312 that are disposed at an included angle, the first elastic connecting portion 311 extends along a second direction, the second elastic connecting portion 312 extends along a third direction, one of the first elastic connecting portion 311 and the second elastic connecting portion 312 is connected with the first supporting frame 132, and the other of the first elastic connecting portion 311 and the second elastic connecting portion 312 is connected with the balancing weight 321. Thus, the vibrator assembly 32 can be buffered by both the first elastic connection portion 311 and the second elastic connection portion 312, so that smooth operation of the second vibration system 3 can be ensured.

As shown in fig. 4 to 5 and 11, in some embodiments of the present invention, the first supporting frame 132 may further have portions disposed at the other two ends of the body 131, that is, the first supporting frame 132 may be formed into a ring structure, so that the first supporting frame 132 disposed in a ring shape may increase the structural strength of the first supporting frame 132, thereby improving the structural firmness of the vibration sound generating unit 100. In addition, the first supporting frame 132 disposed annularly can further increase the installation space of the elastic connecting piece 31, so that the position fixed to the elastic connecting piece 31 can be selected according to the actual assembly requirement, and the assembly flexibility of the elastic connecting piece 31 is improved.

As shown in fig. 4 to 5, according to some embodiments of the present invention, the outer edge of the first support frame 132 does not exceed the outer edge of the first end of the vibration sound emitting unit 100 formed after the first vibration system 2 is fixed to the first end of the fixing member, that is, the outer edge of the first support frame 132 is flush with the outer edge of the mating structure where the first vibration system 2 and the fixing member are assembled, or the outer edge of the first support frame 132 is located inside the outer edge of the mating structure where the first vibration system 2 and the fixing member are assembled, thereby making the structure of the vibration sound emitting unit 100 more compact and saving the assembly space.

In other embodiments of the present invention, the outer edge of the first support frame 132 is substantially flush with the outer edge of the first end of the vibration sounding unit 100 formed after the first vibration system 2 is fixed to the first end of the fixing assembly, so that the structure of the vibration sounding unit 100 is compact, and the external profile of the vibration sounding unit 100 is more regular, so that the assembly with other parts is facilitated.

As shown in fig. 11, in some embodiments of the present invention, a limit portion 133 extending toward the second vibration system 3 is provided at a side portion of the body portion 131 of the magnetic yoke 13 extending in the second direction, a limit groove 321b accommodating the limit portion 133 is provided at a side portion of the weight 321 extending in the second direction, and a width of the limit groove 321b is greater than a width of the limit portion 133 in the second direction, so that the weight 321 can move in a width direction of the limit groove 321b and the limit portion 133 can limit the weight 321, thereby preventing the vibration sounding unit 100 from being damaged due to too large vibration amplitude of the vibrator assembly 32 when the vibration sounding unit 100 collides or falls.

As shown in fig. 1 and 5, in some embodiments of the present invention, the vibration sounding unit 100 may further include a cover plate 5, the cover plate 5 being located at a side of the second vibration system 3 remote from the first vibration system 2, the cover plate 5 being connected with an end of the first support frame 132 remote from the body portion 131 to define an installation space of the second vibration system 3, the cover plate 5 may function to improve structural strength of the fixing assembly, so that smooth operation of the second vibration system 3 may be ensured. Alternatively, the cover plate 5 and the first supporting frame 132 may be separately provided, and the cover plate 5 may be connected to the first supporting frame 132 by laser welding or bonding. Of course, the cover plate 5 and the first supporting frame 132 may be formed as an integral part, and may be formed in an integral stamping forming manner, so as to simplify the assembly process and improve the assembly efficiency.

As shown in fig. 4 to 5 and 10, in some embodiments of the present invention, a plurality of grooves 132a may be formed at an end of the first support frame 132 connected to the body 131, a plurality of protrusions 1311 are formed at an edge of the body 131, and the protrusions 1311 extend into the grooves 132a and are fixed to a bottom of the grooves 132a, so that the plurality of grooves 132a are correspondingly matched with the protrusions 1311, which can facilitate matching between the first support frame 132 and the body 131, improve assembly efficiency, and improve assembly firmness of the body 131 and the first support frame 132.

As shown in fig. 4, in some embodiments of the present invention, the support 4 may include a second support frame 41, the periphery of the diaphragm assembly 21 is fixed on the second support frame 41, one side of the second support frame 41 near the second vibration system 3 is provided with an assembling portion 411 for installing the magnetic circuit system 1, which extends along the first direction, and the assembling portion 411 is inserted into the groove 132a, so that the assembling portion 411 is correspondingly matched with the groove 132a, which not only can facilitate positioning the first support frame 132 and the second support frame 41, reduce the assembly difficulty, but also can improve the assembly efficiency of the first support frame 132 and the second support frame 41. Alternatively, a plurality of grooves 132a may be provided on the first support frame 132, and fitting portions 411 may be provided on the second support frame 41 in one-to-one correspondence with the plurality of grooves 132a, whereby the fitting firmness of the first support frame 132 and the second support frame 41 may be improved.

As shown in fig. 7, in some embodiments of the present invention, the side magnetic portion 12 includes a side magnet 121 and a side magnetic conductive plate 122 disposed on a side of the side magnet 121 near the diaphragm assembly 21, the side magnetic conductive plate 122 is formed into a ring structure, the side magnetic conductive plate 122 includes a ring-shaped main body portion, the main body portion includes four connecting sides connected end to end, the side magnetic conductive plate 122 further includes a first extension plate 1221 and a second extension plate 1222 disposed on each connecting plate, the first extension plate 1221 extends along a first direction, the second extension plate 1222 extends along a direction perpendicular to the first direction and is opposite to the side magnet 121, four corners of the main body portion are injection molded with plastic material portions 412, the plastic material portions 412 and the first extension plate 1221 are connected to form a ring-shaped structure together to form the second support frame 41, and an outer periphery of the diaphragm assembly 21 is fixedly connected with the second support frame 41.

Therefore, through the arrangement, the side magnetic conductive plate 122 and the plastic part form the second support frame 41 together, the second support frame 41 not only can play the role of the side magnetic conductive plate 122, but also can fix the vibrating diaphragm assembly 21, and the plastic material part 412 of the second support frame 41 can be assembled with the first support frame 132 to improve the structural strength, so that the structural arrangement is reasonable, and the structural compactness of the vibrating sound production unit 100 can be improved.

According to some embodiments of the present invention, at least three first sub-center magnets 112 are arranged at intervals, the spacers 1b may be formed by two adjacent first sub-center magnets 112, the number of the driving coils 322 is the same as that of the spacers 1b, and the center holes of the driving coils 322 are arranged in a one-to-one correspondence with the spacers 1 b. Specifically, the driving coils 322 may be formed in a flat shape, and the two long sides 3221 of the driving coils 322 are disposed on opposite sides of the central hole, and the number of the driving coils 322 is the same as the number of the spacers 1b, that is, one driving coil 322 is disposed between two adjacent first sub-center magnets 112. Thus, with the above arrangement, each of the driving coils 322 corresponds to the pair of the first sub-center magnets 112 arranged at intervals, and the first long side 3221 and the second long side 3221 can sufficiently cut the magnetic induction lines, whereby the vibration effect of the second vibration system 3 can be enhanced.

It should be noted that, the above-mentioned first sub-center magnets 112 are arranged at intervals, and it is understood that two adjacent first sub-center magnets 112 are arranged separately, and the gap (the spacing portion 1 b) between two adjacent first sub-center magnets 112 may be larger or smaller along the second direction, and may be optionally arranged according to actual use requirements.

Alternatively, in the second direction, the gaps between two adjacent first sub-center magnets 112 are close to zero or equal to zero, that is, the widths of the spacers 1b are close to zero or equal to zero. That is, two adjacent first sub-center magnets 112 may be disposed in abutment. In the case where the gap between the adjacent two first sub-center magnets 112 is equal to zero, the spacing portion 1b therebetween may be the contact surface/point/line between the adjacent two first sub-center magnets 112. It will be appreciated that although the adjacent two first sub-center magnets 112 are disposed in abutment, due to the presence of assembly errors and material errors, a slight gap (the spacer 1 b) may be present between the adjacent two first sub-center magnets 112, and in another specific example of the present invention, the width of the spacer 1b may be 0.05mm±0.02mm in the second direction.

Optionally, in the third direction, the gap between the adjacent first and second sub-center magnets 112, 113 is close to zero or equal to zero.

The adjacent two first sub-center magnets 112 or the adjacent first sub-center magnets 112 and second sub-center magnets 113 are disposed in close proximity, so that the magnet size and volume can be increased and a stronger magnetic field strength can be provided than in the case where the adjacent two first sub-center magnets 112 or the adjacent first sub-center magnets 112 and second sub-center magnets 113 have a wider gap.

In addition, in the normal case of magnet assembly, magnets having different magnetizing directions are assembled separately. For example, in the case of three first sub-center magnets 112, two first sub-center magnets 112 located at both end positions are first fixed, and then the first sub-center magnets 112 located at the intermediate positions are inserted into the fitting space defined between the two first sub-center magnets 112 located at both end positions. Therefore, in the case where the adjacent first sub-center magnets 112 are disposed in close contact, the first sub-center magnets 112 in the intermediate position do not need to be precisely positioned, the assembly process of the center magnetic portion 11 is simplified, and the assembly efficiency is improved. Moreover, because the three first sub-center magnets 112 are arranged in an abutting mode, glue used for fixing the first sub-center magnets 112 of the rear mounting overflows to the periphery of the magnets during assembly, and then overflows into a tiny gap between two adjacent first sub-center magnets 112, the two adjacent first sub-center magnets 112 can be bonded together, and therefore the three first sub-center magnets 112 can be formed into a whole formed by bonding, the structural firmness of the central magnetic part 11 is greatly improved, and when products fall and collide, the first sub-center magnets 112 are not easy to loose and fall. For another example, in the case where the center magnet includes three first sub-center magnets 112 and two second sub-center magnets 113, the two first sub-center magnets 112 and the second sub-center magnets 113 located at the outer periphery are first positioned, and then the first sub-center magnets 112 located at the intermediate position are inserted into the assembly space defined between the four magnets. Therefore, in the case where the adjacent first sub-center magnet 112, and the adjacent second sub-center magnet 113 are disposed in close proximity, the first sub-center magnet 112 at the intermediate position does not need to be precisely positioned, the assembly process of the center magnetic portion 11 is simplified, and the assembly efficiency is improved. Moreover, since the adjacent first sub-center magnets 112 and the adjacent second sub-center magnets 113 are arranged in an abutting manner, when the first sub-center magnets 112 are assembled, glue for fixing overflows to the circumferential sides of the magnets, and then overflows into a tiny gap between the adjacent two first sub-center magnets 112 and the adjacent second sub-center magnets 113, the adjacent two first sub-center magnets 112 and the adjacent second sub-center magnets 113 can be bonded together, and therefore, the three first sub-center magnets 112 and the two second sub-center magnets 113 can be formed into a whole body formed by bonding, so that the structural firmness of the central magnetic part 11 is greatly improved, and when products fall and collide, the first sub-center magnets 112 and the second sub-center magnets 113 are not easy to loosen and fall off.

In a specific example of the present invention, the driving coil 322 may further include two short sides 3222 disposed opposite to each other, the two short sides 3222 are disposed on two sides of the long side 3221 in the length direction, and two ends of each short side 3222 are respectively connected to the long side 3221, thereby the two short sides 3222 and the two long sides 3221 cooperate to define a central hole, and each central hole is disposed in a one-to-one correspondence with each spacer 1b along the first direction.

As shown in fig. 2 to 3, according to some embodiments of the present invention, the second vibration system 3 may further include a flexible circuit board 33, the flexible circuit board 33 including a flexible board portion 331 and a first board portion 332 and a second board portion 333 provided at both ends of the flexible board portion 331, the first board portion 332 being fixed to the weight 321 and provided with an internal pad electrically connected to the driving coil 322, the second board portion 333 being located at an outer side of the fixed assembly and provided with an external pad electrically connected to the external circuit, the flexible board portion 331 including two connection portions opposing in a first direction and extending in a second direction, an extension length of the two connection portions in the second direction varying with vibration of the vibrator assembly 32.

Specifically, the flexible circuit board 33 may realize an electrical connection between the driving coil 322 and an external circuit. Since the first plate 332 is fixed to the weight 321, the first plate 332 moves synchronously with the vibrator assembly 32. By providing the flexible plate portion 331 between the first plate portion 332 and the second plate portion 333, the two connection portions of the flexible plate portion 331 can change their own lengths in synchronization with the reciprocation of the vibrator assembly 32, for example, when the vibrator assembly 32 vibrates leftwards, the length of the connection portion located above increases and the length of the connection portion located below decreases; when the vibrator assembly 32 vibrates to the right, the length of the connecting portion located above is reduced, the length of the connecting portion located below is increased, the flexible board portion 331 can be formed into a structure similar to a drag chain, the flexible circuit board 33 can be prevented from being broken when the vibrator assembly 32 vibrates reciprocally, and the design is ingenious.

According to the embodiment of the invention, the vibration sounding module comprises a shell and the vibration sounding monomer 100 according to the embodiment of the invention, the vibration sounding monomer 100 is arranged in the shell, the first end of the fixing component is connected with the inner wall of the shell, so that the vibration sounding monomer 100 can be fixed in the shell, and the vibrator component 32 in the second vibration system 3 can be suspended in the shell by the fixing component.

It will be appreciated that in some embodiments, in the case where the diaphragm 211 of the first vibration system 2 is fixed to the first end surface of the fixing member, the first end surface of the fixing member is fixed to the diaphragm 211 and then connected to the inner wall of the housing. Alternatively, in some other embodiments, the diaphragm 211 and the front cover are sequentially connected to the end surface of the first end of the fixing component, and the front cover serves as a protection member, in this case, the first end of the fixing component fixes the diaphragm 211 and the front cover and then is connected to the inner wall of the housing.

In general, the vibration sounding unit 100 is disposed in a housing of the vibration sounding module, and divides an internal space of the housing into a front sound cavity and a rear sound cavity, the front sound cavity is communicated with a sound outlet on the housing to guide out sound, and the rear sound cavity is communicated with a space on the back of the diaphragm 211 for adjusting low-frequency performance of a product.

According to the vibration sounding module provided by the embodiment of the invention, by arranging the vibration sounding single body 100, the first vibration system 2 and the second vibration system 3 of the vibration sounding single body 100 share one set of magnetic circuit system 1, so that the structure is compact, the volume of an acoustic cavity of the vibration sounding module can be increased, and the sounding effect of the vibration sounding module is improved.

An electronic device according to an embodiment of the second aspect of the present invention includes the vibration sound emitting unit 100 according to the above-described embodiment of the present invention. Alternatively, the electronic device may be a mobile phone, PAD, notebook computer, or the like.

According to the electronic device of the second aspect of the present invention, by setting the vibration sounding unit 100, the structural design of the vibration sounding unit 100 is compact, the occupied assembly space is small, and the sound effect and the vibration effect are good, so that the design requirement of the electronic device for lightening and thinning can be met, the electronic device can also have good sound quality and vibration feedback effect, and the market competitiveness of the electronic device product is improved.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vibratory sounding cell comprising:

the fixing assembly comprises a bracket and a magnetic circuit system fixed on the bracket, the magnetic circuit system comprises a magnetic yoke, a central magnetic part and a side magnetic part, the central magnetic part and the side magnetic part are respectively arranged on the magnetic yoke, and the side magnetic part is arranged on the outer side of the central magnetic part and is spaced from the central magnetic part to define a magnetic gap;

the first vibration system and the second vibration system are respectively arranged on two opposite sides of the fixed assembly, the first vibration system vibrates along a first direction and is used for vibrating and sounding, and the first vibration system is fixed at the first end of the fixed assembly; the second vibration system vibrates along a second direction perpendicular to the first direction, the second vibration system comprises an elastic connecting piece and a vibrator assembly, the vibrator assembly is suspended through the elastic connecting piece, and the vibrator assembly comprises a balancing weight and a driving coil arranged on the balancing weight;

The magnetic yoke comprises a body part and hollow holes arranged on the body part, the second sub-center magnet is arranged on the body part along the first direction, the hollow holes are at least partially opposite to the driving coil along the first direction;

along the second direction, the interval gap between two adjacent first sub-center magnets is less than or equal to 1mm, one side of the driving coil, which is away from the first sub-center magnets, is provided with a supporting backboard which is a magnetic conduction piece.

2. The vibration and sound unit according to claim 1, wherein the weight is provided with an assembly hole penetrating along a first direction, the driving coil is located in the assembly hole, the support back plate is located at a side of the weight away from the first vibration system and opposite to the assembly hole, and the driving coil is supported by the support back plate.

3. The vibratory sound unit of claim 1 wherein the projections of the plurality of first sub-center magnets along the first direction are all located inside the edges of the hollowed-out hole, and wherein the plurality of first sub-center magnets along the first direction extend into the hollowed-out hole.

4. A vibratory sound unit according to claim 3 wherein a plurality of said first sub-center magnets and a side of said body portion adjacent said second vibratory system are substantially flush;

and/or the body part of the edge of the hollowed hole of the magnetic yoke is concavely provided with a glue containing groove, and the glue containing groove is internally provided with fixing glue for fixedly connecting the body part with the first sub-center magnet.

5. The vibration and sound unit according to claim 1, wherein the first vibration system comprises a diaphragm assembly and a voice coil, one end of the voice coil is connected with the diaphragm assembly, and the other end of the voice coil is inserted into the magnetic gap;

The side magnet part comprises side magnets, the side magnets are also arranged on the body part, the side magnets, the first sub-center magnets and the second sub-center magnets are magnetized along the first direction, adjacent side magnets and the first sub-center magnets and adjacent two side magnets are opposite in magnetizing direction, and adjacent side magnets and the second sub-center magnets are opposite in magnetizing direction along the third direction.

6. The vibration and sound unit according to claim 1, wherein the first vibration system and the second vibration system are respectively fixed to opposite ends of the fixing assembly, and both ends of the elastic connection member are respectively connected to the vibrator assembly and the second end of the fixing assembly.

7. The vibration-and-sound-producing unit according to claim 6, wherein both ends of the elastic connection member are connected to the vibrator assembly and the bracket, respectively, the bracket has a mounting portion extending to the second end of the fixing assembly, and the elastic connection member is fixedly connected to the mounting portion.

8. The vibration and sound producing unit according to claim 1, wherein the elastic connection member is connected to the magnetic yoke.

9. The vibration and sound unit according to claim 8, wherein the magnetic yoke further comprises first supporting frames provided at both ends of the body portion, one end of the elastic connecting member is connected to the first supporting frames, and the other end of the elastic connecting member is connected to the weight.

10. The vibratory sound unit of claim 9, wherein the first support frame and the body portion are of a split construction and are formed of different materials.

11. The vibration and sound producing unit according to claim 9, wherein the first support frame further has portions provided at the other two ends of the body portion, and the first support frame has a ring-like structure.

12. The vibration-sound-producing unit according to claim 9, wherein a side portion of the body portion of the yoke extending in the second direction is provided with a stopper portion extending toward the second vibration system direction, and a side portion of the weight extending in the second direction is provided with a stopper groove accommodating the stopper portion, and a width of the stopper groove in the second direction is larger than a width of the stopper portion.

13. The vibratory sound unit of claim 9 further comprising a cover plate positioned on a side of the second vibratory system remote from the first vibratory system, the cover plate being connected to an end of the first support frame remote from the body portion to define an installation space for the second vibratory system.

14. The vibration-sound producing unit according to claim 9, wherein a plurality of grooves are formed in one end of the first support frame connected with the body portion, a plurality of protruding portions are formed in the edge of the body portion, and the protruding portions extend into the grooves and are fixed to bottoms of the grooves.

15. The vibration and sound unit according to claim 14, wherein the bracket includes a second support frame to which the outer periphery of the diaphragm assembly of the first vibration system is fixed, and a fitting portion for mounting the magnetic circuit system extending in the first direction is provided at a side of the second support frame adjacent to the second vibration system, and the fitting portion is inserted into the recess.

16. The vibrotactile element according to any one of claims 1-15 wherein a gap between two adjacent first sub-center magnets is close to zero or equal to zero in the second direction;

and/or, in the third direction, a gap between adjacent first and second sub-center magnets is close to or equal to zero.

17. An electronic device comprising the vibrotactile element according to any one of claims 1-16.