CN220915413U

CN220915413U - Sound generating device and electronic equipment

Info

Publication number: CN220915413U
Application number: CN202322438653.5U
Authority: CN
Inventors: 赵国栋; 张琳琳; 王继宗
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-04-25
Filing date: 2023-09-08
Publication date: 2024-05-07
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a vibration sounding device and electronic equipment. The central magnetic part and the side magnetic parts are arranged at intervals to define a magnetic gap, the central magnetic part comprises a plurality of first sub-center magnets which are distributed at intervals along a first direction, and magnetizing directions of two adjacent first sub-center magnets are opposite. The first vibration system and the second vibration system are respectively arranged on two opposite sides of the magnetic circuit system, the voice coil of the first vibration system is inserted into the magnetic gap, the second vibration system comprises an elastic connecting piece and a vibrator assembly, the vibrator assembly is suspended in the installation space by the elastic connecting piece, the vibrator assembly comprises a driving coil, the driving coil is provided with two connecting edges which are oppositely arranged, and along the second direction, the two connecting edges are respectively oppositely arranged with two adjacent first sub-center magnets. The vibration sounding device provided by the utility model has a simple and compact structure and good sounding and vibration effects.

Description

Sound generating device and electronic equipment

Technical Field

The present utility model relates to electroacoustic devices, and more particularly, to a sound generating device and an electronic device.

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.

Disclosure of utility model

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

The utility model also provides electronic equipment with the vibration sounding device.

According to the vibration sound generating device of the embodiment of the first aspect of the utility model, a housing is defined in the housing; the magnetic circuit system comprises a central magnetic part and side magnetic parts outside the central magnetic part, wherein magnetic gaps are defined between the central magnetic part and the side magnetic parts at intervals, the central magnetic part comprises a plurality of first sub-central magnets distributed at intervals along a first direction, and the magnetizing directions of two adjacent first sub-central magnets are opposite; the first vibration system and the second vibration system are respectively arranged on two opposite sides of the magnetic circuit system, the first vibration system vibrates along a second direction perpendicular to the first direction, the first vibration system comprises a vibrating diaphragm assembly and a voice coil, one end of the voice coil is connected with the vibrating diaphragm assembly, and the other end of the voice coil is inserted into the magnetic gap; the second vibration system vibrates along the first direction, the second vibration system comprises an elastic connecting piece and a vibrator assembly, two ends of the elastic connecting piece are respectively connected with the vibrator assembly and the inner wall of the shell so as to enable the vibrator assembly to be suspended in the installation space, the vibrator assembly comprises a driving coil, the driving coil is provided with two connecting edges which are oppositely arranged, and the two connecting edges are oppositely arranged with two adjacent first sub-center magnets along the second direction.

According to the vibration sound generating device of the embodiment of the first aspect of the utility model, the plurality of first sub-center magnets which are distributed at intervals along the first direction are arranged on the central magnetic part, and the two connecting edges of the driving coil along the second direction are respectively arranged opposite to the two adjacent first sub-center magnets, so that the part of the magnetic field with low utilization rate of the central magnetic part in the first vibration system can be used as the magnetic field of the second vibration system, the magnetic field utilization rate of the central magnetic part can be improved, one set of magnetic circuit system is saved, the production cost is reduced, and in addition, the assembly space occupied by one set of magnetic circuit system can be saved, thereby meeting the miniaturization and light-weight design of the vibration sound generating device.

According to some embodiments of the utility model, the number of the first sub-center magnets is at least three, two adjacent first sub-center magnets are arranged at intervals to form a spacing part, the number of the driving coils is the same as that of the spacing parts, and the center holes of the driving coils are arranged in one-to-one correspondence with the spacing parts.

According to some embodiments of the utility model, the side magnet portion includes a side magnet, the side magnet and the plurality of first sub-center magnets are magnetized in the second direction, and magnetizing directions between the adjacent side magnet and the first sub-center magnet and between the adjacent two first sub-center magnets are opposite.

According to some embodiments of the utility model, the central magnet further comprises a central magnetic plate, and a plurality of first sub-central magnets are connected to the central magnetic plate on a side away from the second vibration system.

According to some embodiments of the utility model, the magnetic circuit system further comprises a magnetic yoke, the magnetic yoke comprises a body part and a hollowed hole arranged on the body part, the side magnet and the first sub-center magnet positioned at two ends are both arranged on the body part, and along the second direction, the hollowed hole and the driving coil are at least partially arranged opposite to each other.

In some embodiments of the present utility model, the projections of the other first sub-center magnets located between the first sub-center magnets at two ends along the second direction are located inside the edge of the hollowed hole.

In some embodiments of the present utility model, the other first sub-center magnets located between the first sub-center magnets at both end positions extend into the hollowed-out hole along the second direction.

In some embodiments of the present utility model, a portion of the first sub-center magnet located at two end positions is disposed on the body portion, and another portion of the first sub-center magnet is disposed opposite to the hollow hole.

According to some embodiments of the utility model, the central magnetic part further comprises a central magnetic conduction plate, one side, away from the second vibration system, of the plurality of first sub-central magnets is connected with the central magnetic conduction plate, the magnetic circuit system further comprises a magnetic conduction yoke, the magnetic conduction yoke comprises a body part and a hollowed hole formed in the body part, the central magnetic conduction plate comprises an extension part, a support part is arranged on the outer side of the support part, the extension part extends along the second direction, two ends of the extension part are respectively connected with the support part and the body part, the support part is arranged opposite to the hollowed hole, and the plurality of first sub-central magnets are all fixed on the support part.

In some embodiments of the utility model, the extension is located on opposite sides of the support along a third direction perpendicular to the first direction and the second direction, respectively, and the side magnetic portion is spaced apart from the extension to define a portion of the magnetic gap.

In some embodiments of the present utility model, projections of the plurality of first sub-center magnets along the second direction are located inside edges of the hollowed-out hole.

In some embodiments of the present utility model, the plurality of first sub-center magnets extend into the hollow hole along the second direction.

According to some embodiments of the utility model, the side magnet portion includes a side magnet, the center magnet portion further includes a second sub-center magnet disposed on both sides of a third direction of the plurality of first sub-center magnets, the third direction being perpendicular to the first direction and the second direction, respectively, the side magnet, the first sub-center magnet, and the second sub-center magnet are magnetized in the second direction, and magnetizing directions between adjacent side magnets and the first sub-center magnet and between adjacent two of the first sub-center magnets are opposite in the first direction, and magnetizing directions between adjacent side magnets and the second sub-center magnet are opposite in the third direction.

In some embodiments of the present utility model, the central magnetic portion further includes a central magnetic conductive plate, one sides of the plurality of first sub-center magnets and the plurality of second sub-center magnets, which are far away from the second vibration system, are connected to the central magnetic conductive plate, the magnetic circuit system further includes a magnetic conductive yoke, the magnetic conductive yoke includes a body portion and a hollow hole provided in the body portion, the side magnet and the second sub-center magnet are provided in the body portion, and the hollow hole and the driving coil are at least partially disposed opposite to each other along the second direction.

In some embodiments of the present utility model, the driving coils are plural, the hollow hole is one, and the hollow hole is arranged corresponding to the driving coils; or, the plurality of hollowed holes are arranged, and the plurality of hollowed holes and the plurality of driving coils are arranged in one-to-one correspondence.

According to some embodiments of the utility model, a gap between two adjacent first sub-center magnets is close to zero or equal to zero along the first direction.

An electronic apparatus according to an embodiment of the second aspect of the present utility model includes the vibration sound emitting device according to the above-described embodiment of the present utility model.

According to the electronic equipment of the second aspect of the embodiment of the utility model, by arranging the vibration sounding device, the structural design of the vibration sounding device 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 utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model 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 construction of a vibratory sound device according to one embodiment of the utility model;

FIG. 2 is a schematic diagram of an exploded structure of a vibration sound emitting device according to another embodiment of the present utility model;

FIG. 3 is a vertical cross-sectional view of a vibratory sound device according to one embodiment of the utility model in a first direction;

FIG. 4 is a vertical cross-sectional view of a vibratory sound device according to another embodiment of the utility model, taken along a first direction;

FIG. 5 is a vertical cross-sectional view of a vibratory sound device according to one embodiment of the utility model in a third direction;

FIG. 6 is a vertical cross-sectional view of a vibratory sound device according to another embodiment of the utility model in a third direction;

Fig. 7 is a vertical sectional view of a vibration sound emitting device according to still another embodiment of the present utility model in a third direction.

Reference numerals:

The sound-emitting device 100 is vibrated,

The housing 1 is provided with a plurality of openings,

Magnetic circuit 2, central magnetic portion 21, first sub-central magnet 211, second sub-central magnet 212, central magnetic conductive plate 213, support portion 2131, extension portion 2132, side magnetic portion 22, side magnet 221, side magnetic conductive plate 222, first plate 2221, second plate 2222, recess 222a, magnetic gap 2a, spacer 2b, magnetic yoke 23, body portion 231, hollowed-out hole 232,

The first vibration system 3, the diaphragm assembly 31, the diaphragm 311, the dome 312, the voice coil 32,

The second vibration system 4, the elastic connection member 41, the vibrator assembly 42, the weight 421, the fitting groove 421a, the driving coil 422, and the connection edge 4221.

Detailed Description

Embodiments of the present utility model 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 utility model.

A vibration/sound device 100 according to an embodiment of the first aspect of the present utility model will be described in detail with reference to fig. 1 to 7, and the vibration/sound device 100 may be a speaker module having both sound and vibration functions.

As shown in fig. 1 to 7, a vibration sound emitting device 100 according to an embodiment of the first aspect of the present utility model includes: a housing 1, a magnetic circuit system 2, a first vibration system 3 and a second vibration system 4.

As shown in fig. 3 to 7, an installation space may be defined in the housing 1, the magnetic circuit system 2 is disposed in the installation space, and the first vibration system 3 and the second vibration system 4 may be disposed on opposite sides of the magnetic circuit system 2, respectively. The magnetic circuit 2 may include a central magnetic portion 21 and a side magnetic portion 22 disposed outside the central magnetic portion 21, where the central magnetic portion 21 and the side magnetic portion 22 are disposed at intervals to define a magnetic gap 2a, the central magnetic portion 21 includes a plurality of first sub-center magnets 211 distributed at intervals along a first direction, and magnetizing directions of two adjacent first sub-center magnets 211 are opposite.

The first vibration system 3 may vibrate in a second direction perpendicular to the first direction, the first vibration system 3 may include a diaphragm assembly 31 and a voice coil 32, one end of the voice coil 32 is connected to the diaphragm assembly 31, and the other end of the voice coil 32 is inserted into the magnetic gap 2a. For example, the first direction may be a horizontal direction, and the second direction may be a vertical direction, that is, the voice coil 32 may vibrate reciprocally in the vertical direction under the driving of the magnetic force, so as to drive the diaphragm assembly 31 to vibrate and sound, thereby realizing the sound-producing function of the vibration sound-producing device 100. In a specific example of the present utility model, the diaphragm assembly 31 may include a diaphragm 311 and a dome 312, the diaphragm 311 is connected to the housing 1 or the magnetic circuit system 2, the dome 312 is disposed on the diaphragm 311, and the voice coil 32 is connected to the dome 312 at an end far from the magnetic circuit system 2.

As shown in fig. 3 to 4, the second vibration system 4 may vibrate along the first direction, the second vibration system 4 includes an elastic connection member 41 and a vibrator assembly 42, two ends of the elastic connection member 41 may be respectively connected with the vibrator assembly 42 and an inner wall of the housing 1 to suspend the vibrator assembly 42 in the installation space, the vibrator assembly 42 includes a balancing weight 421 and a driving coil 422 disposed on the balancing weight 421, the driving coil 422 has two connection edges 4221 disposed opposite to each other, and along the second direction, the two connection edges 4221 are disposed opposite to two adjacent first sub-center magnets 211, respectively.

Specifically, since the vibrator assembly 42 is suspended in the installation space by the elastic connection member 41, when the second vibration system 4 works, the driving coil 422 is charged with current, and the driving coil 422 can drive the balancing weight 421 to reciprocate along the first direction under the action of the magnetic field force of the magnetic circuit system 2, so that the vibration sense can be generated, and the vibration function of the vibration sound generating device 100 can be realized. Alternatively, the driving coils 422 may be plural, and the plural driving coils 422 may be disposed at intervals, and the connection edges 4221 of the driving coils 422 are disposed in parallel.

As can be appreciated, the magnetic field utilization rate of the central magnetic circuit portion of the loudspeaker is generally lower, the present utility model sets the plurality of first sub-center magnets 211 spaced along the first direction on the central magnetic portion 21, and two connecting edges 4221 of the driving coil 422 along the second direction are respectively opposite to two adjacent first sub-center magnets 211, so that the magnetic field of the central magnetic portion 21 with low utilization rate in the first vibration system 3 can be used as the magnetic field of the second vibration system 4, the magnetic field utilization rate of the central magnetic portion 21 can be improved, a set of magnetic circuit system 2 can be saved, the production cost can be reduced, and the assembly space occupied by a set of magnetic circuit system 2 can be saved, thereby meeting the miniaturization and light-weight design of the vibration sounding device 100. According to the analysis, the first vibration system 3 and the second vibration system 4 share the magnetic circuit system 2, sound production and vibration functions can be achieved through the magnetic circuit system 2, and the structure is compact and concise, so that the requirements of miniaturization and light weight are met.

According to the vibration sound generating device 100 of the first embodiment of the present utility model, the center magnetic portion 21 is provided with the plurality of first sub-center magnets 211 which are distributed at intervals along the first direction, and the two connecting edges 4221 of the driving coil 422 along the second direction are respectively opposite to the two adjacent first sub-center magnets 211, so that the portion of the magnetic field of the center magnetic portion 21 with low utilization rate in the first vibration system 3 can be used as the magnetic field of the second vibration system 4, the magnetic field utilization rate of the center magnetic portion 21 can be improved, a set of magnetic circuit system 2 can be saved, the production cost can be reduced, and in addition, the assembly space occupied by a set of magnetic circuit system 2 can be saved, thereby meeting the miniaturization and light and thin design of the vibration sound generating device 100.

As shown in fig. 1 to 4, according to some embodiments of the present utility model, at least three first sub-center magnets 211 are provided, two adjacent first sub-center magnets 211 are spaced apart to form a spacing portion 2b, the number of driving coils 422 is the same as that of the spacing portions 2b, and the center holes of the driving coils 422 are arranged in a one-to-one correspondence with the spacing portions 2 b. Specifically, the driving coil 422 may be formed in a flat shape, and two connection sides 4221 of the driving coil 422 are disposed on opposite sides of the center hole, wherein the center hole of the driving coil 422 is opposite to the spacing portion 2b formed by the adjacent two first sub-center magnets 211, and the two connection sides 4221 are respectively opposite to the adjacent two first sub-center magnets 211. The number of driving coils 422 is the same as the number of the spacers 2b, and it is ensured that one driving coil 422 is provided between two adjacent first sub-center magnets 211. Thus, with the above arrangement, each driving coil 422 corresponds to a pair of the first sub-center magnets 211 arranged at intervals, and the first connecting side 4221 and the second connecting side 4221 can sufficiently cut the magnetic induction lines, whereby the vibration effect of the vibrator assembly 42 can be enhanced.

It should be noted that, the above-mentioned first sub-center magnets 211 are arranged at intervals/intervals, which is to be understood as that two adjacent first sub-center magnets 211 are arranged separately, and the interval between two adjacent first sub-center magnets 211 may be larger or smaller along the first direction, which may be selected according to the actual requirement of use.

Alternatively, in the first direction, the gap between two adjacent first sub-center magnets 211 is close to zero or equal to zero, that is, the width of the spacer 2b is close to zero or equal to zero. That is, two adjacent first sub-center magnets 211 may be disposed to abut. In the case where the gap between the adjacent two first sub-center magnets 211 is equal to zero, the spacing portion 1b therebetween may be the contact surface/point/line between the adjacent two first sub-center magnets 211. It will be appreciated that although the adjacent two first sub-center magnets 211 are disposed in abutment, due to the assembly error and the material error, a slight gap (the spacer portion 2 b) may exist between the adjacent two first sub-center magnets 211, and in another specific example of the present utility model, the width of the spacer portion 2b may be 0.05mm±0.02mm in the first direction.

By arranging the adjacent two first sub-center magnets 211 in close proximity, the magnet size and volume can be increased and the magnetic field strength can be provided, as compared with the case where the adjacent two first sub-center magnets 211 have a wider gap.

In addition, since the magnets having different magnetizing directions are assembled in the normal case, for example, in the case of three first sub-center magnets 211, two first sub-center magnets 211 positioned at both end positions are fixed first, and then the first sub-center magnets 211 positioned at the intermediate position are inserted into an assembly space defined between the two first sub-center magnets 211 positioned at both end positions. Therefore, in the case where the adjacent first sub-center magnets 211 are disposed in close contact, the first sub-center magnets 211 at the intermediate positions do not need to be precisely positioned, the assembly process of the center magnetic part 21 is simplified, and the assembly efficiency is improved. Moreover, because the three first sub-center magnets 211 are arranged in an abutting mode, glue used for fixing the first sub-center magnets 211 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 211, the two adjacent first sub-center magnets 211 can be bonded together, and therefore the three first sub-center magnets 211 can be formed into a whole formed by bonding, the structural firmness of the central magnetic part 21 is greatly improved, and when products fall and collide, the first sub-center magnets 211 are not easy to loose and fall.

As shown in fig. 3-4, according to some embodiments of the present utility model, the side magnet 22 may include a side magnet 221, wherein the side magnet 221 and the plurality of first sub-center magnets 211 are magnetized in the second direction, and the magnetizing directions between the adjacent side magnet 221 and the first sub-center magnet 211 and between the adjacent two first sub-center magnets 211 are opposite. For example, the second direction may be a vertical direction, that is, the side magnet 221 and the plurality of first sub-center magnets 211 are each magnetized in the vertical direction, one of the adjacent two first sub-center magnets 211 and between the adjacent side magnet 221 and the first sub-center magnet 211 is magnetized in the top-down direction, and the other of the adjacent two first sub-center magnets 211 and between the adjacent side magnet 221 and the first sub-center magnet 211 is magnetized in the bottom-up direction. Thus, by the above arrangement, the voice coil 32 can be made to sufficiently cut the magnetic induction lines in the magnetic gap 2a formed between the side magnetic portion 22 and the center magnetic portion 21, and the driving coil 422 can be made to sufficiently cut the magnetic induction lines in the spacer 2b formed by the adjacent two first sub-center magnets 211, and the sound emission and vibration effects of the vibration sound emitting device 100 can be ensured.

As shown in fig. 3 to 4, according to some embodiments of the present utility model, the central magnetic portion 21 further includes a central magnetic conductive plate 213, and a side of the plurality of first sub-center magnets 211, which is far from the second vibration system 4, is connected to the central magnetic conductive plate 213, and the central magnetic conductive plate 213 may not only function as a concentrated magnetic induction line, but also assemble the plurality of first sub-center magnets 211 together, so as to facilitate installation and fixation of the plurality of first sub-center magnets 211.

As shown in fig. 3, according to some embodiments of the present utility model, the magnetic circuit system 2 may further include a magnetic yoke 23, where the magnetic yoke 23 includes a body portion 231 and a hollow hole 232 disposed in the body portion 231, and the side magnetic portion 22 and the first sub-center magnet 211 disposed at two end positions are disposed in the body portion 231, and the hollow hole 232 is disposed at least partially opposite to the driving coil 422 along the second direction. Specifically, one end of the plurality of first sub-center magnets 211 may be connected to the center magnetically permeable plate 213, and the other end of the first sub-center magnet 211 positioned at both ends may be fixed to the main body 231, whereby the magnetic yoke 23 may not only fix the side magnetic portion 22 and the center magnetic portion 21, but may also have a magnetism collecting effect, and may secure a magnetic field strength corresponding to the first vibration system 3. By providing the hollow hole 232 on the body portion 231, the hollow hole 232 may be opposite to a part of the driving coil 422, or may be opposite to the whole driving coil 422, thereby ensuring that the driving coil 422 can smoothly cut the magnetic induction line, and thus ensuring the vibration effect of the second vibration system 4.

Alternatively, the number of the driving coils 422 may be plural, the number of the hollow holes 232 may be plural, and the hollow holes 232 are disposed corresponding to the plurality of driving coils 422, so that the processing procedure of the hollow holes 232 may be simplified, and the processing efficiency may be improved. Optionally, the driving coils 422 may be multiple, the hollow holes 232 may also be multiple, and the multiple hollow holes 232 are disposed in one-to-one correspondence with the multiple driving coils 422, so that the open area of the magnetic yoke 23 may be relatively reduced, and thus, not only the structural strength of the magnetic yoke 23 may be improved, but also the magnetism gathering effect of the magnetic yoke 23 may be improved.

As shown in fig. 3, in some embodiments of the present utility model, the projections of the other first sub-center magnets 211 located between the first sub-center magnets 211 at both ends in the second direction are located inside the edge of the hollowed-out hole 232, so that the number of magnetic induction lines passing through the hollowed-out hole 232 can be ensured, and thus the vibration effect of the second vibration system 4 can be ensured.

Further, along the second direction, the other first sub-center magnets 211 located between the first sub-center magnets 211 at two ends extend into the hollow hole 232, so that the distance between the central magnetic portion 21 and the driving coil 422 can be reduced, the magnetic induction line strength acting on the driving coil 422 can be increased, and the vibration effect of the second vibration system 4 can be improved.

A vibration sound emitting device 100 according to an embodiment of the present utility model will be described in detail with reference to fig. 3 and 5.

As shown in fig. 3 and 5, the vibration sound generating apparatus 100 includes: a housing 1, a magnetic circuit system 2, a first vibration system 3 and a second vibration system 4.

The magnetic circuit system 2 is arranged in the installation space defined by the shell 1, and the first vibration system 3 and the second vibration system 4 are respectively arranged on two opposite sides of the magnetic circuit system 2. The magnetic circuit 2 includes a yoke 23, a center magnetic portion 21 and a side magnetic portion 22 provided on the yoke 23, the side magnetic portion 22 being provided on the outer side of the center magnetic circuit, and the center magnetic portion 21 and the side magnetic portion 22 being provided at a distance from each other to define a magnetic gap 2a. The central magnetic portion 21 includes three first sub-center magnets 211 and a central magnetic conductive plate 213, the three first sub-center magnets 211 are distributed at intervals along a first direction (x direction as shown in fig. 1 to 7), one end of each first sub-center magnet 211 far away from the second vibration system 4 is connected to the central magnetic conductive plate 213, and two adjacent first sub-center magnets 211 are disposed at intervals to form a spacer 2b. The side magnet portion 22 includes a side magnet 221 and a side magnetic plate 222 disposed on a side of the side magnet 221 away from the second vibration system 4, wherein the side magnet 221 and the plurality of first sub-center magnets 211 are magnetized along the second direction, and magnetizing directions between the adjacent side magnet 221 and the first sub-center magnet 211 and between the adjacent two first sub-center magnets 211 are opposite. The magnetic yoke 23 includes a main body 231 and a hollow hole 232 formed in the main body 231, the side magnets 221 and the first sub-center magnets 211 located at two ends are all disposed in the main body 231, and the first sub-center magnets 211 located at an intermediate position extend into the hollow hole 232 along a second direction (e.g., a z direction shown in fig. 1-7).

The first vibration system 3 vibrates along the second direction, the first vibration system 3 includes a diaphragm assembly 31 and a voice coil 32, the diaphragm assembly 31 includes a diaphragm 311 and a dome 312 provided on the diaphragm 311, one end of the voice coil 32 is fixed on the dome 312, and the other end of the voice coil 32 is inserted into the magnetic gap 2a. The side magnetic conduction plate 222 includes a first plate body 2221 extending horizontally and a second plate body 2222 extending vertically, the first plate body 2221 is arranged on one side of the side magnet 221 far away from the second vibration system 4, one end of the second plate body 2222 is connected with the first plate body 2221, the other end of the second plate body 2222 extends along the second direction, and two ends of the vibrating diaphragm 311 are fixed on the second plate body 2222. The ring portion of the diaphragm 311 extends along the second direction toward a direction approaching the side magnetic portion 22, and the first plate 2221 is provided with a recess 222a corresponding to the ring portion.

The second vibration system 4 vibrates along the first direction, the second vibration system 4 includes an elastic connection member 41 and a vibrator assembly 42, two ends of the elastic connection member 41 may be connected with the vibrator assembly 42 and an inner wall of the housing 1 respectively to suspend the vibrator assembly 42 in the installation space, the vibrator assembly 42 includes a balancing weight 421 and two driving coils 422 disposed on the balancing weight 421, each driving coil 422 has two connection edges 4221 disposed opposite to each other, and along the second direction, the two connection edges 4221 are disposed opposite to two adjacent first sub-center magnets 211 respectively.

Specifically, when the vibration/sound producing device 100 is operated, the voice coil 32 is energized to perform a magnetic induction line movement in the cutting magnetic gap 2a, thereby driving the diaphragm assembly 31 to vibrate and produce sound. After the driving coil 422 is supplied with current, the magnetic induction wire in the cutting spacer 2b can be moved, so that the vibrator assembly 42 can be driven to vibrate reciprocally, and the vibration effect can be achieved.

As shown in fig. 1 and 7, according to some embodiments of the present utility model, the central magnetic portion 21 may further include a central magnetic conductive plate 213, one side of the plurality of first sub-central magnets 211 away from the second vibration system 4 is connected to the central magnetic conductive plate 213, the magnetic circuit 2 further includes a magnetic conductive yoke 23, the magnetic conductive yoke 23 includes a body portion 231 and a hollowed-out hole 232 provided in the body portion 231, the central magnetic conductive plate 213 may include a support portion 2131 and an extension portion 2132 provided outside the support portion 2131, the extension portion 2132 extends along the second direction, two ends of the extension portion 2132 are respectively connected to the support portion 2131 and the body portion 231, the support portion 2131 is disposed opposite to the hollowed-out hole 232, and the plurality of first sub-central magnets 211 are all fixed to the support portion 2131.

Specifically, the central magnetically permeable plate 213 may not only function as a concentrated magnetic induction line, but also may assemble a plurality of first sub-center magnets 211 together. The central magnetically permeable plate 213 includes a support portion 2131 extending in the first direction and an extension portion 2132 extending in the second direction, and one end of the plurality of first sub-center magnets 211 may be connected to the support portion 2131. Both ends of the extension portion 2132 are connected to the support portion 2131 and the extension portion 2132, respectively, whereby the yoke 23 can support the central magnetic portion 21 via the extension portion 2132. The body 231 of the magnetic yoke 23 is provided with a hollow hole 232, the other ends of the plurality of first sub-center magnets 211 may be opposite to the hollow hole 232, the hollow hole 232 may be opposite to a part of the driving coil 422, or may be opposite to the whole driving coil 422, thereby ensuring that the driving coil 422 can smoothly cut the magnetic induction line, and thus ensuring the vibration effect of the second vibration system 4.

As shown in fig. 1 and 7, in some embodiments of the present utility model, the extension portions 2132 are located at opposite sides of the support portion 2131 along a third direction perpendicular to the first direction and the second direction, respectively, and the side magnetic portions 22 are spaced apart from the extension portions 2132 to define a partial magnetic gap 2a. Specifically, the first direction and the third direction may be located in the same horizontal plane, for example, the first direction may be a horizontal x-direction, the third direction may be a horizontal y-direction, and the second direction may be a vertical z-direction. The number of the extension portions 2132 may be two, and the two extension portions 2132 may be provided at both sides of the support portion 2131 in the third direction, so that the support portion 2131 and the magnetic yoke 23 may be connected together, and the structural design is relatively simple. The side magnetic portion 22 may define a part of the magnetic gap 2a at a distance from the extension portion 2132, and the side magnetic portion 22 may define another part of the magnetic gap 2a at a distance from the first sub-center magnet 211 and the center magnetically permeable plate 213 at both ends.

In some embodiments of the present utility model, the projections of the plurality of first sub-center magnets 211 along the second direction are located inside the edge of the hollowed-out hole 232, so that the number of magnetic induction lines passing through the hollowed-out hole 232 can be ensured, and thus the vibration effect of the second vibration system 4 can be ensured.

Further, along the second direction, the plurality of first sub-center magnets 211 extend into the hollow holes 232, so that the distance between the center magnetic portion 21 and the driving coil 422 can be reduced, the magnetic induction line strength acting on the driving coil 422 can be increased, and the vibration effect of the second vibration system 4 can be improved.

A vibration sound emitting device 100 according to an embodiment of the present utility model will be described in detail with reference to fig. 1, 4 and 7.

As shown in fig. 1, 4 and 7, the vibration sound generating apparatus 100 includes: a housing 1, a magnetic circuit system 2, a first vibration system 3 and a second vibration system 4.

The magnetic circuit system 2 is arranged in the installation space defined by the shell 1, and the first vibration system 3 and the second vibration system 4 are respectively arranged on two opposite sides of the magnetic circuit system 2. The magnetic circuit 2 includes a yoke 23, a center magnetic portion 21 and a side magnetic portion 22 provided on the yoke 23, the side magnetic portion 22 being provided on the outer side of the center magnetic circuit, and the center magnetic portion 21 and the side magnetic portion 22 being provided at a distance from each other to define a magnetic gap 2a.

The central magnetic part 21 includes three first sub-central magnets 211 and a central magnetic conductive plate 213, the central magnetic conductive plate 213 includes a support part 2131 extending in a first direction (x-direction as shown in fig. 1 to 7) and an extension part 2132 extending in a second direction (z-direction as shown in fig. 1 to 7), both ends of the extension part 2132 are connected to the support part 2131 and the extension part 2132, respectively, and the extension part 2132 is provided at both ends of the support part 2131 in a third direction (y-direction as shown in fig. 1 to 7). Three first sub-center magnets 211 are spaced apart in the first direction, one end of each first sub-center magnet 211, which is far away from the second vibration system 4, is connected to the supporting portion 2131, and two adjacent first sub-center magnets 211 are spaced apart to form a spacing portion 2b. The side magnet 22 includes a side magnet 221 and a side magnetic plate 222 disposed on a side of the side magnet 221 away from the second vibration system 4, wherein the side magnet 221 and the plurality of first sub-center magnets 211 are magnetized along the second direction, and magnetizing directions between the adjacent side magnet 221 and the first sub-center magnet 211 and between the adjacent two first sub-center magnets 211 are opposite. The magnetic yoke 23 includes a main body 231 and a hollow hole 232 provided in the main body 231, the side magnet 221 is provided in the main body 231, and both ends of the extension portion 2132 are connected to the support portion 2131 and the main body 231, respectively. Along the second direction, the plurality of first sub-center magnets 211 are opposite to the hollow holes 232.

The second vibration system 4 vibrates along the first direction, the second vibration system 4 includes an elastic connecting piece 41 and a vibrator assembly 42, two ends of the elastic connecting piece 41 can be respectively connected with the vibrator assembly 42 and the inner wall of the shell 1 to suspend the vibrator assembly 42 in the installation space, the vibrator assembly 42 includes a balancing weight 421 and two driving coils 422 arranged on the balancing weight 421, the two driving coils 422 are distributed at intervals along the first direction, each driving coil 422 has two connecting edges 4221 which are oppositely arranged, and along the second direction, the two connecting edges 4221 are respectively oppositely arranged with two adjacent first sub-center magnets 211.

As shown in fig. 2 and 6, according to some embodiments of the present utility model, the side magnet portion 22 may include side magnets 221, the center magnet portion 21 further includes second sub-center magnets 212 disposed at both sides of a third direction of the plurality of first sub-center magnets 211, the third direction being perpendicular to the first direction and the second direction, respectively, the side magnets 221, the first sub-center magnets 211 and the second sub-center magnets 212 are magnetized in the second direction, and magnetizing directions between adjacent side magnets 221 and the first sub-center magnets 211 and between adjacent side magnets 221 and between adjacent first sub-center magnets 211 are opposite, respectively, in the third direction, and magnetizing directions between adjacent side magnets 221 and the second sub-center magnets 212 are opposite.

Specifically, the first direction and the third direction may be located in the same horizontal plane, for example, the first direction may be a horizontal x-direction, the third direction may be a horizontal y-direction, and the second direction may be a vertical z-direction. The center magnetic section 21 includes a plurality of first sub-center magnets 211 arranged at intervals in the first direction and second sub-center magnets 212 arranged at intervals in the second direction. The side magnets 221, the first sub-center magnets 211 and the second sub-center magnets 212 are all magnetized along the second direction, for example, the second direction may be the vertical z direction, and along the first direction, one of the adjacent side magnets 221 and the first sub-center magnets 211 and one of the adjacent two first sub-center magnets 211 is magnetized along the direction from top to bottom, and the other of the adjacent side magnets 221 and the first sub-center magnets 211 and the other of the adjacent two first sub-center magnets 211 is magnetized along the direction from bottom to top. In the third direction, one of the adjacent side magnets 221 and the second sub-center magnet 212 is magnetized in the top-down direction, and the other of the adjacent side magnets 221 and the second sub-center magnet 212 is magnetized in the bottom-up direction.

Thus, by the above arrangement, the voice coil 32 can be made to sufficiently cut the magnetic induction lines in the magnetic gap 2a formed between the side magnetic portion 22 and the center magnetic portion 21, and the driving coil 422 can be made to sufficiently cut the magnetic induction lines in the spacer 2b formed by the adjacent two first sub-center magnets 211, and the sound emission and vibration effects of the vibration sound emitting device 100 can be ensured.

As shown in fig. 6, in some embodiments of the present utility model, the central magnetic portion 21 further includes a central magnetic conductive plate 213, one sides of the plurality of first sub-center magnets 211 and the plurality of second sub-center magnets 212 away from the second vibration system 4 are connected to the central magnetic conductive plate 213, the magnetic circuit system 2 further includes a magnetic conductive yoke 23, the magnetic conductive yoke 23 includes a body portion 231 and a hollow hole 232 provided in the body portion 231, the side magnet 221 and the second sub-center magnets 212 are provided in the body portion 231, and the hollow hole 232 is at least partially opposite to the driving coil 422 along the second direction.

Specifically, the central magnetically permeable plate 213 may not only function as a concentrated magnetic induction line, but also may assemble a plurality of first and second sub-center magnets 211 and 212 together. The side magnet 221 and the second sub-center magnet 212 can be fixed to the main body 231 of the yoke 23, so that the center magnet 21 and the side magnet 22 can be supported by the yoke 23, and the magnetic field strength corresponding to the first vibration system 3 can be ensured. The hollow hole 232 is provided on the body 231 of the magnetic yoke 23, and the hollow hole 232 may be opposite to a part of the driving coil 422 or may be opposite to the whole driving coil 422, so that the driving coil 422 can be ensured to smoothly cut the magnetic induction line, and the vibration effect of the second vibration system 4 can be ensured.

In some embodiments of the present utility model, the projections of the plurality of first sub-center magnets 211 along the second direction may be located inside the edge of the hollowed-out hole 232, so that the number of magnetic induction lines passing through the hollowed-out hole 232 may be ensured, and thus the vibration effect of the second vibration system 4 may be ensured.

Further, the number of the driving coils 422 may be plural, the number of the hollow holes 232 may be plural, and the hollow holes 232 are disposed corresponding to the driving coils 422, so that the processing procedure of the hollow holes 232 may be simplified, and the processing efficiency may be improved. Of course, the driving coils 422 may be multiple, the hollow holes 232 may be multiple, and the hollow holes 232 and the driving coils 422 are arranged in one-to-one correspondence, so that the open area of the magnetic yoke 23 can be relatively reduced, and the magnetism gathering effect and the structural strength of the magnetic yoke 23 can be improved.

A vibration sound emitting device 100 according to an embodiment of the present utility model will be described in detail with reference to fig. 2, 4 and 6.

As shown in fig. 2, 4 and 6, the vibration sound generating apparatus 100 includes: a housing 1, a magnetic circuit system 2, a first vibration system 3 and a second vibration system 4.

The central magnetic portion 21 includes three first sub-center magnets 211, two second sub-center magnets 212, and a central magnetic conduction plate 213, the three first sub-center magnets 211 are distributed at intervals along a first direction (x direction shown in fig. 1 to 7), the two second sub-center magnets 212 are disposed at both sides of the three first sub-center magnets 211 in a third direction (y direction shown in fig. 1 to 7), one end of each of the first sub-center magnets 211 and the second sub-center magnets 212, which is far from the second vibration system 4, is connected to the supporting portion 2131, and two adjacent first sub-center magnets 211 are disposed at intervals to form a spacing portion 2b. The side magnet 22 includes a side magnet 221 and a side magnetic plate 222 disposed on a side of the side magnet 221 away from the second vibration system 4, and the magnetic yoke 23 includes a body 231 and a hollow hole 232 disposed on the body 231, where the side magnet 221 and the second sub-center magnet 212 are disposed on the body 231. Along the second direction (the z direction shown in fig. 1-7), the plurality of first sub-center magnets 211 are opposite to the hollowed-out holes 232. The side magnets 221, the first sub-center magnets 211 and the second sub-center magnets 212 are magnetized along the second direction, the magnetizing directions between the adjacent side magnets 221 and the first sub-center magnets 211 and between the adjacent two first sub-center magnets 211 are opposite along the first direction, and the magnetizing directions between the adjacent side magnets 221 and the second sub-center magnets 212 are opposite along the third direction.

Wherein, adjacent two first sub-center magnets 211 and adjacent first sub-center magnets 211 and second sub-center magnets 212 are disposed in close proximity. It will be appreciated that, although the adjacent two first sub-center magnets 211 and the adjacent first and second sub-center magnets 211, 212 are disposed in close proximity, there may be a slight gap between the adjacent two first sub-center magnets 211 and the adjacent first and second sub-center magnets 211, 212 due to the presence of assembly errors and material errors. For example, in the second direction, the gap width between two adjacent first sub-center magnets 211 may be 0.05mm±0.02mm; in the third direction, the gap width between the adjacent first and second sub-center magnets 211 and 212 may be 0.05mm±0.02mm.

Specifically, when the central magnetic portion 21 is assembled, the two first sub-center magnets 211 positioned at both ends in the second direction and the two second sub-center magnets 212 positioned at both ends in the third direction may be fixed first, and then the first sub-center magnets 211 positioned at the intermediate position may be inserted into an assembly space defined by the two first sub-center magnets 211 and the two second sub-center magnets 212 together. Therefore, in the case that the adjacent first sub-center magnet 211 and second sub-center magnet 212 are all arranged in an abutting manner, the first sub-center magnet 211 at the middle position is not required to be precisely positioned, the assembly process of the center magnetic part 21 is simplified, and the assembly efficiency is improved. Moreover, since the five magnets are all arranged in pairs in an abutting manner, glue for fixing the first sub-center magnet 211 of the rear assembly overflows to the periphery of the magnet during assembly, and then overflows into the tiny gaps between the two adjacent first sub-center magnets 211 and 212, the two adjacent first sub-center magnets 211 and the two adjacent second sub-center magnets 212 can be bonded together, and therefore, the three first sub-center magnets 211 and the two second sub-center magnets 212 can be formed into a whole body formed by bonding, the structural firmness of the central magnetic part 21 is greatly improved, and when products fall and collide, the loosening and falling of the first sub-center magnets 211 and the second sub-center magnets 212 are difficult to occur.

As shown in fig. 1-2, according to some embodiments of the present utility model, an assembly groove 421a is formed on a side of the balancing weight 421 close to the magnetic circuit system 2, and the driving coil 422 is embedded in the assembly groove 421a, so that the structure of the vibrator assembly 42 can be more compact. Alternatively, a fixing glue may be disposed in the assembly groove 421a, and the driving coil 422 may be fixed in the assembly groove 421a by the fixing glue. It should be noted that the structural design of the weight 421 is not limited thereto. For example, the weight 421 may not be provided with the fitting groove 421a, and the driving coil 422 may be adhered to the outer surface of the weight 421.

An electronic apparatus according to an embodiment of the second aspect of the present utility model includes the vibration sound emitting device 100 according to the above-described embodiment of the present utility model. 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 utility model, by arranging the vibration sounding device 100, the structural design of the vibration sounding device 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 utility model, 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 utility model 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 utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, 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 utility model 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 utility model. 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 utility model 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 utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A vibration sound producing apparatus, comprising:

A housing defining an installation space therein;

The magnetic circuit system comprises a central magnetic part and side magnetic parts outside the central magnetic part, wherein magnetic gaps are defined between the central magnetic part and the side magnetic parts at intervals, the central magnetic part comprises a plurality of first sub-central magnets distributed at intervals along a first direction, and the magnetizing directions of two adjacent first sub-central magnets are opposite;

The first vibration system and the second vibration system are respectively arranged on two opposite sides of the magnetic circuit system, the first vibration system vibrates along a second direction perpendicular to the first direction, the first vibration system comprises a vibrating diaphragm assembly and a voice coil, one end of the voice coil is connected with the vibrating diaphragm assembly, and the other end of the voice coil is inserted into the magnetic gap; the second vibration system vibrates along the first direction, the second vibration system comprises an elastic connecting piece and a vibrator assembly, two ends of the elastic connecting piece are respectively connected with the vibrator assembly and the inner wall of the shell so as to enable the vibrator assembly to be suspended in the installation space, the vibrator assembly comprises a driving coil, the driving coil is provided with two connecting edges which are oppositely arranged, and the two connecting edges are oppositely arranged with two adjacent first sub-center magnets along the second direction.

2. The vibration and sound production device according to claim 1, wherein at least three first sub-center magnets are provided, two adjacent first sub-center magnets are arranged at intervals to form a spacing part, the number of the driving coils is the same as that of the spacing parts, and the center holes of the driving coils are arranged in one-to-one correspondence with the spacing parts.

3. The vibration/sound-producing device according to claim 1, wherein the side magnet portion includes side magnets, the side magnets and the plurality of first sub-center magnets are magnetized in the second direction, and magnetizing directions between the adjacent side magnets and the first sub-center magnets and between the adjacent two first sub-center magnets are opposite.

4. The vibration and sound device as claimed in claim 1, wherein the central magnetic portion further comprises a central magnetic conductive plate, and a plurality of first sub-center magnets are connected to the central magnetic conductive plate at a side away from the second vibration system.

5. The vibration/sound production device according to any one of claims 1 to 4, wherein the magnetic circuit system further comprises a magnetic yoke, the magnetic yoke comprises a body portion and a hollowed-out hole provided in the body portion, the side magnetic portion and the first sub-center magnet located at two end positions are both provided in the body portion, and the hollowed-out hole is provided at least partially opposite to the driving coil in the second direction.

6. The vibration/sound production device according to claim 5, wherein projections of the other first sub-center magnets located between the first sub-center magnets at both end positions in the second direction are located inside the edge of the hollowed-out hole.

7. The vibration-sound-producing device according to claim 6, wherein the other first sub-center magnets located between the first sub-center magnets at both end positions extend into the hollowed-out hole in the second direction.

8. The vibration/sound production device according to claim 5, wherein a part of the first sub-center magnet located at both end positions is provided to the body portion, and the other part of the first sub-center magnet is provided opposite to the hollowed-out hole.

9. The vibration and sound device according to any one of claims 1 to 3, wherein the central magnetic portion further comprises a central magnetic conductive plate, one side of the plurality of first sub-center magnets, which is far away from the second vibration system, is connected with the central magnetic conductive plate, the magnetic circuit further comprises a magnetic conductive yoke, the magnetic conductive yoke comprises a body portion and a hollowed-out hole formed in the body portion, the central magnetic conductive plate comprises a supporting portion and an extending portion formed in the outer side of the supporting portion, the extending portion extends along the second direction, two ends of the extending portion are connected with the supporting portion and the body portion respectively, the supporting portion is arranged opposite to the hollowed-out hole, and the plurality of first sub-center magnets are fixed to the supporting portion.

10. The vibration-sound-producing device of claim 9, wherein the extension portions are located on opposite sides of the support portion in a third direction perpendicular to the first and second directions, respectively, and the side magnetic portions are spaced apart from the extension portions to define a portion of the magnetic gap.

11. The vibration and sound device according to claim 9, wherein projections of the plurality of first sub-center magnets along the second direction are located inside edges of the hollowed-out hole.

12. The vibration and sound device as claimed in claim 11, wherein the plurality of first sub-center magnets extend into the hollowed-out hole along the second direction.

13. The vibration and sound device according to any one of claims 1 to 3, wherein the side magnetic portion includes side magnets, the center magnetic portion further includes second sub-center magnets provided on both sides of a third direction of the plurality of first sub-center magnets, the third direction being perpendicular to the first direction and the second direction, respectively, the side magnets, the first sub-center magnets, and the second sub-center magnets are magnetized in the second direction, and magnetizing directions between adjacent side magnets and the first sub-center magnets and between adjacent two of the first sub-center magnets are opposite in the first direction, and magnetizing directions between adjacent side magnets and the second sub-center magnets are opposite in the third direction.

14. The vibration and sound device as claimed in claim 13, wherein the central magnetic part further comprises a central magnetic conductive plate, a plurality of first sub-center magnets and second sub-center magnets are connected to the central magnetic conductive plate on a side of the magnetic circuit far away from the second vibration system, the magnetic circuit further comprises a magnetic conductive yoke, the magnetic conductive yoke comprises a body part and a hollowed hole formed in the body part, the side magnets and the second sub-center magnets are arranged in the body part, and the hollowed hole is at least partially opposite to the driving coil along the second direction.

15. The vibration-sound-producing device of claim 14, wherein the projections of the plurality of first sub-center magnets along the second direction are all located inside the edge of the hollowed-out hole.

16. The vibration and sound device as claimed in claim 15, wherein a plurality of the first sub-center magnets each extend into the hollowed-out hole in the second direction.

17. The vibration-sound-producing device according to claim 15, wherein the driving coil is provided in plural,

The number of the hollowed holes is one, and the hollowed holes are arranged corresponding to the driving coils;

Or, the plurality of hollowed holes are arranged, and the plurality of hollowed holes and the plurality of driving coils are arranged in one-to-one correspondence.

18. The vibration-sound-producing device according to claim 1 or 2, wherein a gap between two adjacent first sub-center magnets in the first direction is close to zero or equal to zero.

19. An electronic device comprising a vibratory sound apparatus according to any one of claims 1-18.