CN116546398A

CN116546398A - Sound generating device and electronic equipment

Info

Publication number: CN116546398A
Application number: CN202310483430.2A
Authority: CN
Inventors: 张琳琳; 王继宗; 赵国栋
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-08-04
Also published as: CN220915416U; CN117061961A

Abstract

The invention 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 balancing weight and 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 embodiment of the invention has a simple and compact structure and good sounding and vibration effects.

Description

Sound generating device and electronic equipment

Technical Field

The present invention 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 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 device 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 device.

According to the vibration sound generating device of the embodiment of the first aspect of the invention, 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 suspend the vibrator assembly in the installation space, the vibrator assembly comprises a balancing weight and a driving coil arranged on the balancing weight, 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 side magnetic part comprises side magnets, the center magnetic part further comprises second sub-center magnets arranged on two sides of the third direction of the first sub-center magnets, the third direction is perpendicular to the first direction and the second direction respectively, the center magnetic part further comprises a center magnetic conduction plate, the plurality of first sub-center magnets and the second sub-center magnets are far away from one side of the second vibration system and are connected with the center 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 side magnets and the second sub-center magnets are all arranged on the body part, and the hollowed hole and the driving coil are at least partially arranged opposite to each other along the second direction. .

According to the vibration sound generating device of the embodiment of the first aspect of the invention, 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 invention, 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 invention, the side magnets, the first sub-center magnets and the second sub-center magnets are magnetized in the second direction, and in the first direction, the magnetizing directions between the adjacent side magnets and the first sub-center magnets and between the adjacent two first sub-center magnets are opposite, and in the third direction, the magnetizing directions between the adjacent side magnets and the second sub-center magnets are opposite.

According to some embodiments of the invention, 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.

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

According to some embodiments of the invention, a part of the second sub-center magnet is disposed on the body portion, and a projection of another part of the second sub-center magnet along the second direction is located inside an edge of the hollowed hole.

According to some embodiments of the invention, the second sub-center magnet includes a first magnetic portion and a second magnetic portion, the second magnetic portion is disposed on a side of the first magnetic portion away from the side magnet, and an extension length of the second magnetic portion is smaller than an extension length of the first magnetic portion along the first direction.

In some embodiments of the present invention, 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 invention, an assembly groove is formed in one side, close to the magnetic circuit, of the balancing weight, and the driving coil is embedded in the assembly groove.

An electronic apparatus according to an embodiment of the second aspect of the present invention includes the vibration sound emitting device 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 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 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 construction of a vibratory sound device according to one embodiment of the invention;

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

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

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

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

FIG. 6 is a vertical cross-sectional view of a vibratory sound device according to another embodiment of the invention 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 invention 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, first magnetic portion 2121, second magnetic portion 2122, 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 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.

A vibration/sound device 100 according to an embodiment of the first aspect of the present invention 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 invention 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 invention, 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 invention 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 invention, 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 invention, 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.

As shown in fig. 3-4, according to some embodiments of the present invention, 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 invention, 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 invention, 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 invention, 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 invention 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 invention, 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 invention, 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 invention, 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 invention 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 invention, 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 invention, 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 invention, 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.

According to some embodiments of the present invention, a portion of the second sub-center magnet 212 may be disposed on the body portion 231, and a projection of another portion of the second sub-center magnet 212 along the second direction is located inside an edge of the hollowed hole 232, whereby a hollowed area of the hollowed hole 232 may be increased, a number of magnetic induction lines passing through the hollowed hole 232 may be ensured, and thus a vibration effect of the second vibration system 4 may be ensured.

As shown in fig. 2, according to some embodiments of the present invention, the second sub-center magnet 212 may include a first magnetic portion 2121 and a second magnetic portion 2122, and the second magnetic portion 2122 may be disposed at a side of the first magnetic portion 2121 away from the side magnet 221, and an extension length of the second magnetic portion 2122 is smaller than an extension length of the first magnetic portion 2121 in the first direction. It can be appreciated that the side magnetic portion 22 and the second sub-center magnet 212 are spaced apart to define a partial magnetic gap 2a, specifically, the first magnetic portion 2121 of the second sub-center magnet 212 and the side magnetic portion 22 define the magnetic gap 2a, and by providing the extending length of the first magnetic portion 2121 along the first direction to be longer than the extending length of the second magnetic portion 2122 along the first direction, the magnetic gap 2a still defined by the first magnetic portion 2121 and the side magnetic portion 22 can have a magnetic field strength meeting the requirement, so that the processing cost can be saved.

According to some embodiments of the present invention, the number of the driving coils 422 may be plural, the number of the hollow holes 232 may be one, and the hollow holes 232 may be 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. 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 invention 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.

As shown in fig. 1-2, according to some embodiments of the present invention, 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 invention includes the vibration sound emitting device 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 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 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 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 suspend the vibrator assembly in the installation space, the vibrator assembly comprises a balancing weight and a driving coil arranged on the balancing weight, 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 side magnetic part comprises side magnets, the center magnetic part further comprises second sub-center magnets arranged on two sides of the third direction of the first sub-center magnets, the third direction is perpendicular to the first direction and the second direction respectively, the center magnetic part further comprises a center magnetic conduction plate, the plurality of first sub-center magnets and the second sub-center magnets are far away from one side of the second vibration system and are connected with the center 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 side magnets and the second sub-center magnets are all arranged on the body part, and the hollowed hole and the driving coil are at least partially arranged opposite to each other 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 magnets, the first sub-center magnets, and the second sub-center magnets are magnetized in the second direction, and wherein the directions of magnetization between the adjacent side magnets and the first sub-center magnets and between the adjacent two first sub-center magnets are opposite in the first direction, and wherein the directions of magnetization between the adjacent side magnets and the second sub-center magnets are opposite in the third direction.

4. The vibration-sound-producing device of claim 1, wherein the projections of the plurality of first sub-center magnets along the second direction are located inside the edge of the hollowed-out hole.

5. The vibration and sound device according to claim 4, wherein a plurality of the first sub-center magnets extend into the hollowed-out hole in the second direction.

6. The vibration/sound production device according to claim 1, wherein a part of the second sub-center magnet is provided on the body portion, and a projection of another part of the second sub-center magnet in the second direction is located inside an edge of the hollowed-out hole.

7. The vibration and sound device according to claim 1, wherein the second sub-center magnet includes a first magnetic portion and a second magnetic portion, the second magnetic portion is provided on a side of the first magnetic portion away from the side magnet, and an extension length of the second magnetic portion is smaller than an extension length of the first magnetic portion in the first direction.

8. The vibration and sound device according to any one of claims 1-7, 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.

9. The vibration and sound production device according to any one of claims 1 to 7, wherein an assembly groove is formed in a side, close to the magnetic circuit, of the balancing weight, and the driving coil is embedded in the assembly groove.

10. An electronic device comprising the vibration sound-producing device according to any one of claims 1 to 9.