CN115002620B - Sound-producing vibration device and electronic equipment - Google Patents

Abstract

The invention relates to a sounding vibration device and electronic equipment. The sound-producing vibration device comprises a shell, a sound-producing unit and a vibration motor, wherein the shell comprises a first shell and a second shell which are matched with each other, the first shell comprises a support, the support is welded with the second shell, the sound-producing unit is connected with the first shell and comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to produce sound in a vibrating mode, the vibration motor comprises a coil and a magnetic circuit assembly, at least one coil is arranged on two inner side walls of the second shell, which are oppositely arranged, the magnetic circuit assembly comprises a central magnet and at least one side magnet arranged on the side edge of the central magnet, the side magnets and the central magnet are arranged at intervals, at least part of the voice coil is inserted between the side magnets and the central magnet and reciprocates along the axial direction of the voice coil, the magnetic circuit assembly is arranged between the two inner side walls of the shell and is arranged at intervals with the coil, and at least part of the magnetic circuit assembly reciprocates under the combined action of the coils on the two inner side walls.

Description

Sound-producing vibration device and electronic equipment

Technical Field

The invention belongs to the technical field of acoustic-electric transduction, and particularly relates to a sound-producing vibration device and electronic equipment.

Background

In products such as mobile phones, mobile communication terminals generally have a sound generating element and a vibration element, such as a speaker module and a motor, and when the communication terminal receives a communication request, such as a phone call or a short message, an incoming call prompt mode has two kinds of sound prompts and vibration prompts. In the conventional design, the performance improvement of the speaker module and the motor is generally achieved by increasing the product size, but with the increasingly compact internal space of the electronic device, the battery, the main board and the camera occupy increasingly larger space, which requires that the speaker module and the vibration motor cannot be increased or even reduced in size, so that the performance improvement is in conflict with the requirement.

Disclosure of Invention

The invention aims to at least solve the problem that a loudspeaker module and a motor occupy large space in electronic equipment. This object is achieved by:

a first aspect of the present invention discloses a sound-emitting vibration device, including:

The shell comprises a first shell and a second shell which are matched with each other, wherein the first shell comprises a bracket, and the bracket and the second shell are welded;

the sound generating unit is connected with the first shell and comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate and generate sound;

The vibration motor comprises a coil and a magnetic circuit assembly, at least one coil is respectively arranged on two inner side walls of the second shell, which are oppositely arranged, the magnetic circuit assembly comprises a central magnet and at least one side magnet arranged on the side edge of the central magnet, and the side magnets and the central magnet are arranged at intervals;

At least part of the voice coil is inserted between the side magnet and the center magnet and reciprocates along the axial direction of the voice coil, the magnetic circuit assembly is arranged between the two inner side walls of the shell and is arranged at intervals with the coil, at least part of the magnetic circuit assembly reciprocates under the combined action of the coils on the two inner side walls, and at least part of the reciprocating direction of the magnetic circuit assembly is parallel to the vibration direction of the voice coil.

According to the sounding vibration device, the magnetic circuit component is arranged between the two inner side walls of the shell and reciprocates under the combined action of the coils on the two inner side walls, so that the magnetic circuit component is formed into the vibrator of the vibration motor to give a vibration prompt to a user, meanwhile, part of the voice coil of the sounding unit is inserted between the side magnet and the center magnet of the magnetic circuit component and reciprocates along the axial direction of the voice coil to drive the vibrating diaphragm to vibrate and sound, thus the same magnetic circuit component can meet the requirements of the sounding unit and the vibration motor at the same time, the setting quantity of the magnetic circuit components in the sounding vibration device is effectively reduced, the integral volume of the sounding vibration device is reduced, and the space occupation rate of the sounding vibration device in electronic equipment is reduced.

Simultaneously, adopt welded mode to connect first casing and second casing, reducible grafting cooperation structure's setting is convenient for assemble fixedly first casing and second casing, improves the connection reliability of first casing and second casing.

Meanwhile, when the voice coil vibrates, the vibration of the shell can be caused, and as at least part of the reciprocating motion direction of the magnetic circuit assembly is parallel to the vibration direction of the voice coil, the magnetic circuit assembly can actively vibrate under the action of the coil under the condition that the coil is electrified, and when the vibration frequency of the magnetic circuit assembly is the same or approximately the same as the vibration frequency of the coil and the vibration direction of the magnetic circuit assembly is opposite to the vibration direction of the coil, the vibration of the shell driven by the vibration of the voice coil can be counteracted, so that the shell can be kept in a stable state, and even if the coil is not electrified, the magnetic circuit assembly can vibrate together with the voice coil under the action of the voice coil at the same time, so that part of the vibration of the shell is counteracted, the shell can be kept in a stable state, and the user experience is improved.

In addition, the sounding vibration apparatus according to the present invention may further have the following additional technical features:

in some embodiments of the present invention, the first housing further includes a first injection molded part and a second injection molded part provided at both ends of the first housing in a length direction, and the bracket is used to connect the first injection molded part and the second injection molded part.

In some embodiments of the present invention, the second housing includes a first side wall and a second side wall disposed opposite to each other, the first side wall and the second side wall being disposed along a length direction of the second housing, respectively, and the first side wall and the second side wall being welded to the bracket, respectively.

In some embodiments of the present invention, the bracket includes a first connection portion and a second connection portion that are disposed opposite to each other, the first connection portion and the second connection portion being disposed along a length direction of the housing, respectively, the bracket further includes a first fixing portion and a second fixing portion that are disposed opposite to each other, the first fixing portion and the second fixing portion being disposed along a width direction of the housing, respectively, and the first connection portion, the first fixing portion, the second connection portion, and the second fixing portion being sequentially connected end to end.

In some embodiments of the present invention, the first connecting portion and the second connecting portion are disposed above the first fixing portion and the second fixing portion in a height direction of the housing, and the first connecting portion and the second connecting portion are welded to the second housing, respectively.

In some embodiments of the present invention, the first fixing portion is connected to the first injection molding portion, the first fixing portion is provided with a first limiting protrusion facing the second fixing portion, the second fixing portion is connected to the second injection molding portion, and the second fixing portion is provided with a second limiting protrusion facing the first fixing portion.

In some embodiments of the present invention, at least one mounting protrusion protruding toward the inner direction of the housing is provided on each of the two inner sidewalls of the second housing, and the coil is sleeved outside the mounting protrusion.

In some embodiments of the present invention, the housing further includes a cover plate, where the cover plate is disposed on a surface of the diaphragm facing away from the voice coil, and is connected to the first housing and/or the diaphragm.

In some embodiments of the present invention, the magnetic circuit assembly further includes a yoke, the center magnet and the side magnet are disposed together on a surface of the yoke facing the voice coil, and the yoke is connected to both ends of the second housing in a length direction by an elastic member.

The invention also discloses electronic equipment, which is provided with the sounding vibration device.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

FIG. 1 is a schematic diagram of a sound emitting vibration device according to some embodiments of the present application;

FIG. 2 is a schematic view of another angle of a sound emitting vibration device according to some embodiments of the present application;

FIG. 3 is a schematic A-A cross-sectional view of a sound emitting vibration device according to some embodiments of the present application;

FIG. 4 is a schematic view of a B-B cross-sectional structure of a sound emitting vibration device according to some embodiments of the present application;

FIG. 5 is a schematic diagram of an exploded structure of a sound emitting vibration device according to some embodiments of the present application;

FIG. 6 is a schematic illustration of a sound emitting vibration device according to some embodiments of the present application with a second housing removed;

FIG. 7 is a schematic diagram illustrating an assembled structure of a magnetic circuit assembly and a first housing according to some embodiments of the present application;

FIG. 8 is a schematic diagram illustrating an assembled structure of a magnetic circuit assembly and a second housing according to some embodiments of the present application;

FIG. 9 is a schematic view showing an internal structure of a second housing according to some embodiments of the present application;

FIG. 10 is a schematic view of the internal structure of a second housing according to some embodiments of the present application;

FIG. 11 is a schematic diagram showing a connection structure between a coil and a conductive plate according to some embodiments of the present application;

FIG. 12 is a schematic view of the structure of an elastic member according to some embodiments of the present application;

FIG. 13 is a schematic diagram illustrating a connection structure between a sound generating unit and a first housing according to some embodiments of the present application;

FIG. 14 is an enlarged schematic view of a portion C of a sound emitting vibration device according to some embodiments of the present application;

FIG. 15 is a schematic diagram of a sound generating unit according to some embodiments of the present application;

Fig. 16 is an enlarged view of a structure of a portion D of a sound generating unit according to some embodiments of the present application;

FIG. 17 is a schematic diagram showing the relative positions of the sound generating unit and the first housing according to some embodiments of the present application;

FIG. 18 is a schematic diagram of a sound unit according to some embodiments of the present application;

FIG. 19 is a schematic view of a split structure of a first housing according to some embodiments of the present application;

FIG. 20 is a schematic structural view of a metal insert according to some embodiments of the present application;

fig. 21 is a schematic structural view of a stent according to some embodiments of the present application.

The various references in the drawings are as follows:

1, a sounding vibration device;

10, 11, namely a first shell, 111, a plugging end, 112, a second injection molding part, 113, a bracket, 1131, a first connecting part, 1132, a second connecting part, 1133, a first fixing part, 1134, a second fixing part, 1135, a first limiting protrusion, 1136, a second limiting protrusion, 114, a metal insert, 1141, a first straight plate part, 1142, a second straight plate part, 1143, a third straight plate part, 12, a second shell, 121, a first side wall, 1211, a mounting protrusion, 122, 123, a bottom wall, 1231, a first protruding part, 1232, a second protruding part, 1233, a leakage hole, and 13, a cover plate;

20 parts of sound generating unit, 21 parts of vibrating diaphragm, 211 parts of vibrating diaphragm body, 212 parts of conductive wire, 22 parts of voice coil, 221 parts of second lead, 23 parts of centering support piece and 24 parts of ball top;

30, a vibration motor, 31, 311, a first lead, 32, a magnetic circuit assembly, 321, a central magnet, 322, a side magnet, 3221, 3222, 323, a first magnetic conduction plate, 324, a second magnetic conduction plate, 325, a magnetic yoke, 3251, and a threading hole;

40, a circuit board 41, a first conductive sheet 42 and a second conductive sheet;

51, a first damping block and 52, a second damping block;

60, a dustproof net;

70, elastic member, 71, outer connecting portion, 72, elastic portion, 73, inner connecting portion.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

At present, electronic equipment is generally provided with an acoustic prompt and a vibration prompt, wherein the acoustic prompt generally adopts a loudspeaker, and the vibration prompt generally adopts a vibration motor. However, the electronic equipment has limited internal space, and in order to reduce the space occupation rate of the loudspeaker and the vibration motor in the electronic equipment shell, the application provides the electronic equipment which is internally provided with the sounding vibration device.

As shown in fig. 1 to 5, in some embodiments of the present application, a sound-emitting vibration device 1 includes a housing 10, a sound-emitting unit 20 and a vibration motor 30, the sound-emitting unit 20 includes a diaphragm 21 and a voice coil 22 for driving the diaphragm 21 to vibrate and emit sound, the vibration motor 30 includes a coil 31 and a magnetic circuit assembly 32, at least one coil 31 is respectively disposed on two inner sidewalls of the housing 10 disposed opposite to each other, the magnetic circuit assembly 32 includes a center magnet 321 and at least one side magnet 322 disposed on a side of the center magnet 321, and the side magnet 322 is disposed at a distance from the center magnet 321. Wherein, the magnetic circuit assembly 32 is disposed between two inner side walls of the housing and spaced from the coil 31, at least a portion of the magnetic circuit assembly 32 reciprocates under the combined action of the coils 31 on the two inner side walls, and at least a portion of the magnetic circuit assembly 32 reciprocates in parallel with the vibration direction of the voice coil 22, and at least a portion of the voice coil 22 is inserted between the center magnet 321 and the side magnet 322 of the magnetic circuit assembly 32 and reciprocates along the axial direction thereof.

According to the sounding vibration device 1 of the present application, the magnetic circuit assembly 32 is disposed between two inner side walls of the housing 10 and reciprocates under the combined action of the coils 31 of the two inner side walls, so that the magnetic circuit assembly 32 is formed into a vibrator of the vibration motor 30 to give a vibration prompt to a user, and meanwhile, a part of the voice coil 22 of the sounding unit 20 is inserted between the center magnet 321 and the side magnet 322 of the magnetic circuit assembly 32 and reciprocates along the axial direction of the voice coil, so that the vibrating diaphragm 21 is driven to vibrate and sound, thereby the same magnetic circuit assembly 32 simultaneously meets the requirements of the sounding unit 20 and the vibration motor 30, the number of the magnetic circuit assemblies 32 in the sounding vibration device 1 is effectively reduced, the overall volume of the sounding vibration device 1 is reduced, and the space occupation rate of the sounding vibration device 1 in an electronic device is reduced.

Meanwhile, when the voice coil 22 vibrates, the vibration of the casing 10 is caused, because at least part of the reciprocating motion direction of the magnetic circuit assembly 32 is parallel to the vibration direction of the voice coil 22, under the condition that the voice coil 31 is electrified, the magnetic circuit assembly 32 can actively vibrate under the action of the voice coil 31, and when the vibration frequency of the magnetic circuit assembly 32 is the same or approximately the same as that of the voice coil 22, and the vibration direction of the magnetic circuit assembly 32 is opposite to that of the voice coil 22, the vibration of the casing 10 driven by the voice coil 22 can be counteracted, so that the casing 10 keeps steady, and even under the condition that the voice coil 31 is not electrified, the voice coil 22 vibrates and simultaneously the magnetic circuit assembly 32 vibrates together with the voice coil 22, so that part of the vibration of the casing 10 is counteracted, the casing 10 keeps steady, and the user experience is improved.

Specifically, in some embodiments of the present invention, the housing 10 has a substantially rectangular structure, including a first housing 11 and a second housing 12 that are mutually matched, and the sound generating unit 20 and the vibration motor 30 are disposed together in a space surrounded by the first housing 11 and the second housing 12. Wherein the sound generating unit 20 is connected to the first housing 11, and the vibration motor 30 is connected to the second housing 12.

As shown in fig. 6 to 11, in some embodiments of the present invention, the housing 10 includes a first sidewall 121 and a second sidewall 122 disposed opposite to each other, the first sidewall 121 and the second sidewall 122 are disposed along a length direction of the housing 10, and at least one coil 31 is disposed on an inner wall surface of the first sidewall 121 and an inner wall surface of the second sidewall 122, respectively.

As shown in fig. 1 and 4, in the present application, the vibration direction of the voice coil 22 is the height direction of the case 10, the extension direction of the long edge on the case 10 is the length direction of the case 10, and the extension direction of the short edge on the case 10 is the width direction of the case 10 in a plane perpendicular to the vibration direction of the voice coil 22.

Specifically, the second housing 12 is provided with a first side wall 121 and a second side wall 122, the first side wall 121 and the second side wall 122 are respectively disposed on two sides of the bottom wall 13 in the length direction, and two sides of the bottom wall 13 in the width direction are disposed in an open manner and are matched with the first housing 11. Wherein, the first side wall 121 and the second side wall 122 are respectively provided with a coil 31, and the two coils 31 are respectively connected with the circuit board 40, and power is respectively supplied to the coils 31 at two sides through the circuit board 40, so that the coils 31 at two sides form a parallel structure, and under the condition that the coils 31 are electrified, the magnetic circuit assembly 32 can reciprocate along the direction parallel to the first side wall 121 and the second side wall 122 under the action of the magnetic fields of the two coils 31, namely, the vibration direction is the same as the vibration direction of the voice coil 22, thereby giving a vibration prompt to a user.

As shown in connection with fig. 6-11, in some embodiments of the invention, the coil 31 on one of the two inner side walls is disposed opposite to the current direction of the coil 31 on the other of the two inner side walls.

Specifically, the current direction of the coil 31 on the first side wall 121 is configured to be opposite to the current direction of the coil 31 on the second side wall 122, so that the magnetic circuit assembly 32 is driven to vibrate by the magnetic field generated when the coils 31 on the two side walls are energized, and a vibration prompt is given to the user.

As shown in fig. 2, 6, 10 and 11, in some embodiments of the present invention, a plurality of first conductive sheets 41 and a plurality of second conductive sheets 42 are electrically connected to each other on the circuit board 40, the plurality of first conductive sheets 41 are disposed between the housing 10 and the yoke 325 and electrically connected to the coil 31, and the plurality of second conductive sheets 42 are disposed outside the housing 10 and electrically connected to an external power source.

Specifically, the number of the first conductive pieces 41 is four and is provided between the bottom wall 123 and the yoke 325, and the coil 31 is electrically connected to the two first conductive pieces 41 provided on the same side and forms an electrical circuit. The number of the second conductive pieces 42 is two, the two second conductive pieces 42 are provided outside the case 10 and electrically connected to an external power source, and the first conductive pieces 41 and the second conductive pieces 42 are electrically connected to connect the coil 31 and the external power source through the wiring board 40, and supply power to the coil 31 through the external power source wire.

As shown in fig. 6 and 11, in some embodiments of the present invention, the yoke 325 is provided with a plurality of threading holes 3251, the plurality of threading holes 3251 are disposed in one-to-one correspondence with the plurality of first conductive sheets 41, the coil 31 and the first conductive sheets 41 are connected by the first lead 311, and the first lead 311 passes through the threading holes 3251.

Specifically, the circuit board 40 is attached to the upper surface of the bottom wall 123, and the yoke 325 is disposed above the circuit board 40 and spaced from the circuit board 40, so that in order to prevent the yoke 325 from shielding the penetrating process of the first lead 311, a plurality of threading holes 3251 are provided on the yoke 325, and the first lead 311 for connecting the coil 31 and the first conductive sheet 41 passes through the threading holes 3151, thereby electrically connecting the coil 31 and the first conductive sheet 41.

In some embodiments of the present invention, the first side wall 121 and/or the second side wall 122 may further be provided with a plurality of coils 31, and the plurality of coils 31 on the same side wall are connected in series sequentially and then connected to the circuit board 40, or the plurality of coils 31 on the same side wall are respectively connected to the circuit board 40.

Referring again to fig. 6 to 11, in some embodiments of the present invention, the coil 31 has a flat strip-shaped annular structure, and the flat surface of the coil 31 is parallel to the vibration direction of the magnetic circuit assembly 32 and is respectively bonded to the two inner side walls. The coil 31 of the flat strip-shaped annular structure is adapted to the shapes of the first side wall 121 and the second side wall 122, so that the space occupation rate of the coil 31 in the second housing 12 can be effectively reduced, and the overall volume of the sound-producing vibration device 1 can be further reduced, so that the sound-producing vibration device can be assembled in an electronic device.

As shown in connection with fig. 2,4 and 9, in some embodiments of the present invention, at least one mounting protrusion 1211 protruding toward the inside of the housing 10 is provided on both inner sidewalls of the housing 10, respectively, and the coil 31 is sleeved outside the mounting protrusion 1211.

Specifically, the inner wall surfaces of the first and second side walls 121 and 122 are respectively provided with a mounting protrusion 1211, the mounting protrusions 1211 are in a bar-shaped structure, and the coil 31 is sleeved outside the mounting protrusions 1211 and is in snap fit with the mounting protrusions 1211, so that the position of the coil 31 is fixed by the mounting protrusions 1211.

As shown in fig. 4 to 8, in some embodiments of the present invention, the number of the side magnets 322 is two, and the two side magnets 322 are symmetrically disposed at both sides of the center magnet 321 and spaced apart from the center magnet 321, respectively, and the bottom end of the voice coil 22 is interposed between the center magnet 321 and the side magnets 322. When the voice coil 22 is energized, the voice coil 22 reciprocates in its axial direction under the magnetic field of the magnetic circuit assembly 32, thereby driving the diaphragm 21 to vibrate and sound. By symmetrically disposing the two side magnets 322 on both sides of the center magnet 321, the balance when the voice coil 22 vibrates can be effectively ensured. Meanwhile, since the magnetic circuit assembly 32 can also reciprocate along the axial direction of the voice coil 22, the vibration of the housing 10 due to the vibration of the voice coil 22 can be counteracted, and when the sound-emitting vibration device 1 is only used for sound-emitting prompt by the sound-emitting unit 20, the vibration of the whole sound-emitting vibration device 1 is reduced or avoided.

As shown in fig. 4, in some embodiments of the present invention, the magnetic field direction of the center magnet 321 and the magnetic field direction of the side magnets 322 are opposite, and are each parallel to the axial direction of the voice coil 22.

Specifically, the black arrow direction in fig. 4 is the magnetic field direction of the center magnet 321 and the side magnets 322. Wherein, the magnetic field direction of the central magnet 321 is downward along the vertical direction, and the magnetic field direction of the side magnet 322 is upward along the vertical direction, so that the magnetic field directions of the two are opposite.

Referring again to fig. 4 to 8, in some embodiments of the present invention, the magnetic circuit assembly 32 further includes a first magnetic conductive plate 323 and a second magnetic conductive plate 324, wherein the first magnetic conductive plate 323 is disposed on the upper surface of the central magnet 321 in a fitting manner, and the second magnetic conductive plate 324 is disposed on the upper surface of the side magnet 322 in a fitting manner, so that the magnetic field strength of the central magnet 321 and the side magnet 322 is enhanced by the first magnetic conductive plate 323 and the second magnetic conductive plate 324.

As shown in fig. 5, in some embodiments of the present invention, the side magnet 322 includes a first magnetic portion 3221 and a second magnetic portion 3222, the first magnetic portion 3221 and the second magnetic portion 3222 being disposed apart along a length direction of the center magnet 321. By composing the side magnet 322 by selecting the first magnetic portion 3221 and the second magnetic portion 3222 of a small size, the reliability of the side magnet 322 can be effectively improved, and the side magnet 322 is prevented from being broken when the housing 10 is impacted or dropped.

Referring again to fig. 4 to 8, in some embodiments of the present invention, the magnetic circuit assembly 32 further includes a yoke 325, and the center magnet 321 and the side magnets 322 are disposed together on a surface of the yoke 325 facing the voice coil 22, and the yoke 325 is connected to the housing 10 through the elastic member 70.

Specifically, the elastic member 70 is disposed along the length direction of the case 10, the yoke 325 is connected to both ends of the case 10 in the length direction through the elastic member 70, the upper surface of the yoke 325 is provided with a center magnet 321 and two side magnets 322, and the center magnet 321 and the two side magnets 322 are supported by the yoke 325. The number of the elastic members 70 is four, two elastic members 70 are respectively disposed at two ends of the yoke 325 in the length direction, and the two elastic members 70 at the same end are disposed at intervals along the width direction of the yoke 325, so as to ensure balance when the yoke 325 vibrates.

As shown in fig. 2,4, 5, 9 and 10, in some embodiments of the present invention, a first damping block 51 is disposed between the housing 10 and the yoke 325, and the first damping block 51 is connected to the housing 10 and/or the yoke 325.

Specifically, the first damping block 51 is connected to the bottom wall 123 of the second housing 12, and foam may be selected as a specific material, so that when the magnetic circuit assembly 32 vibrates as a whole, the magnetic circuit assembly 32 can be effectively prevented from being excessively vibrated to strike or damage the bottom wall 123. The number of the first damping blocks 51 may be four, and may be disposed at a central position of the bottom wall 123 along the length direction and the width direction of the bottom wall 123 at intervals.

Referring again to fig. 2,4, 5, 9 and 10, in some embodiments of the present invention, at least one leakage hole 1233 is provided on a plate surface of the case 10 corresponding to the yoke 325, the leakage hole 1233 communicates with the inside and the outside of the case 10, and/or a dust screen 60 is provided at the leakage hole 1233.

Specifically, the bottom wall 123 is provided with a plurality of leakage holes 1233, and the leakage holes 1233 communicate the inside and outside of the housing 10, so that when the magnetic circuit assembly 32 vibrates, the air pressure inside the housing 10 can be balanced by the leakage holes 1233. Meanwhile, the dust screen 60 is disposed at the leakage hole 1233, so that dust can be effectively prevented from entering the inside of the housing 10 through the leakage hole 1233, and pollution or damage to electrical devices in the housing 10 due to dust can be prevented.

Referring again to fig. 4, 5, 9 and 10, in some embodiments of the present invention, two first protrusions 1231 are disposed at one end of the bottom wall 1233 in the length direction, the two first protrusions 1231 are disposed at intervals in the width direction of the bottom wall 123, two second protrusions 1232 are disposed at the other end of the bottom wall 123 in the length direction, and the two second protrusions 1232 are disposed at intervals in the width direction of the bottom wall 123. The elastic members 70 disposed at both ends of the yoke 325 are respectively connected to the first and second protrusions 1231 and 1232, so that a certain gap is formed between the elastic members 70 and the upper surface of the bottom wall 123, thereby ensuring that the elastic members 70 have enough space to vibrate along the height direction of the housing 10, and further ensuring that the magnetic circuit assembly 32 can vibrate along the height direction of the housing 10. Wherein, both ends of the elastic member 70 are respectively connected to the yoke 325 and the bottom wall 123 by welding.

As shown in fig. 2,6 and 12, in some embodiments of the present invention, the elastic member 70 includes an outer connection portion 71, an elastic portion 72 and an inner connection portion 73, the inner connection portion 73 is connected to the yoke 325, the outer connection portion 71 is connected to both ends of the housing 10 in the length direction, and the elastic portion 72 has a plurality of bending sections for connecting the outer connection portion 71 and the inner connection portion 73.

Specifically, the outer connection portion 371 is connected to the first protrusion 1231 or the second protrusion 1232 on the bottom wall 123, the inner connection portion 73 is connected to the yoke 325, and the outer connection portion 71 and the inner connection portion 73 are connected through the elastic portion 72, so that the yoke 325 is fixed in the second case 12 by the elastic member 70 and the yoke 325 can be vibrated in a direction parallel to the vibration direction of the voice coil 22. Meanwhile, the elastic portion 72 is provided with a plurality of bending sections, so that the elastic deformation capability of the elastic portion 72 can be improved.

As shown in fig. 2,4 and 6, in some embodiments of the present invention, the acoustic vibration device 1 further includes a first conductive portion and a second conductive portion, both of which are disposed outside the same side of the housing 10, the first conductive portion is electrically connected to the voice coil 22, and the second conductive portion is electrically connected to the coil 31.

The first conductive part and the second conductive part are provided outside the same side of the housing 10, so that the sound generating unit 20 and the vibration motor 30 are connected to external power sources, respectively. Wherein, a plurality of second conductive sheets 42 are disposed outside the housing 10 and form a second conductive portion, and are used for connecting an external power source.

As shown in fig. 2,4, and 13 to 16, in some embodiments of the present invention, the sound generating unit 20 includes a diaphragm 21 and a voice coil 22, and a top end of the voice coil 22 is connected to a bottom surface of the diaphragm 21 and is used to drive the diaphragm 21 to vibrate and generate sound. Wherein, the bottom edge of the vibrating diaphragm 21 is connected with the top surface of the first housing 11, and at the same time, the bottom end of the voice coil 22 is connected with the bottom surface of the first housing 11 through the centering support piece 23, so as to fix the sound generating unit 20 on the first housing 11 and support the sound generating unit 20 to vibrate and generate sound. In some embodiments of the present invention, the top surface of the diaphragm 21 is further provided with a dome 24 for enhancing rigidity of the diaphragm 21 and ensuring stability of vibration of the diaphragm 21.

Referring to fig. 17 and 18, in some embodiments of the present invention, the diaphragm 21 is a conductive diaphragm, and includes a diaphragm body 211 and a conductive wire 212, where the conductive wire 212 is attached to a surface of the diaphragm body 211 facing the voice coil 22, and the voice coil 22 is connected to the conductive wire 212.

Specifically, the voice coil 22 is connected to the conductive wire 212 through the second lead 221. By attaching the conductive wire 212 to the surface of the diaphragm body 211 facing the voice coil 22 and connecting the conductive wire to the voice coil 22, the arrangement of conductive lines in the housing 10 can be reduced, thereby facilitating assembly.

As shown in connection with fig. 2,4, 13 and 14, in some embodiments of the present invention, the housing 10 further includes a cover 13, where the cover 13 is disposed on a surface of the diaphragm 21 facing away from the voice coil 22 and is connected to the first housing 11 and/or the diaphragm 21.

Specifically, the cover plate 13 is a rectangular annular structure with an opening in the center, and the cover plate 13 is disposed above the diaphragm 21 and is attached to the edge of the diaphragm 21, so as to prevent edge warping of the edge of the diaphragm 21, thereby further improving connection reliability between the diaphragm 21 and the first housing 11.

As shown in fig. 2 and 17 to 19, in some embodiments of the present invention, a metal insert 114 penetrating through the first housing 11 is provided on the first housing 11, one end surface of the metal insert 114 is electrically connected to a conductive wire 212, and the other end surface of the conductive insert 114 is provided outside the housing 10 and forms a first conductive portion.

Specifically, the metal insert 114 is injection molded integrally with the first housing 11, and is provided through the first housing 11 in the height direction of the first housing 11. When the sound generating unit 20 is assembled with the first housing 11, the conductive wire 212 is just attached to the top end surface of the metal insert 114, so that the voice coil 22 is electrically connected with the metal insert 114, and is connected with an external power source through the bottom end surface of the metal insert 114, so as to supply power to the voice coil 22.

As shown in connection with fig. 17 to 20, in some embodiments of the present invention, the metal insert 114 includes a first straight plate portion 1141, a second straight plate portion 1142, and a third straight plate portion 1143 that are sequentially connected, and the first straight plate portion 1141, the second straight plate portion 1142, and the third straight plate portion 1143 are surrounded into a concave structure.

Specifically, the first straight plate 1141 is disposed on top of the metal insert 114 and connected to the conductive wire 212, and the third straight plate 1143 is disposed on bottom of the metal insert 114 and connected to an external power source. Further, to facilitate connection of the first straight plate portion 1141 to the conductive wire 212, the first straight plate portion 1141 may be protruded or aligned with the top end face of the first housing 11, and to facilitate connection of the third straight plate portion 1143 to an external power source, the third straight plate portion 1143 may be protruded or aligned with the bottom end face of the first housing 11. By enclosing the first straight plate portion 1141, the second straight plate portion 1142 and the third straight plate portion 1143 into a concave structure, the metal insert 114 is fixed in the first housing 11 through the first straight plate portion 1141 and the third straight plate portion 1143 in the injection molding process, and the metal insert 114 is prevented from sliding down.

As shown in connection with fig. 2 and 6, in some embodiments of the present invention, both the first conductive portion and the second conductive portion are provided at one side of the housing 10 in the length direction. Namely, the second conductive sheet 42 and the metal insert 114 are provided on one side of the housing 10 in the length direction, since the wiring board 40 is provided along the length direction of the housing 10.

Referring again to fig. 2, 4, 17 and 19, in some embodiments of the present invention, the first housing 11 includes a bracket 113, and the bracket 113 and the second housing 12 are welded.

By connecting the first housing 11 and the second housing 12 in a welded manner, the number of the plugging structure is reduced, the first housing 11 and the second housing 12 are assembled and fixed, and the connection reliability of the first housing 11 and the second housing 12 is improved.

Specifically, in some embodiments of the present invention, the first housing 11 further includes a first injection molded part 111 and a second injection molded part 112 provided at both ends of the first housing 11 in the length direction, and the bracket 113 is used to connect the first injection molded part 111 and the second injection molded part 112. Wherein, the first injection molding part 111 and the second injection molding part 112 are plastic parts, such as plastics, the bracket 113 is a metal part, and two end portions of the bracket 113 in the length direction are embedded in the first injection molding part 111 and the second injection molding part 112, so as to form the first housing 11. The second housing 12 is provided with a first side wall 121 and a second side wall 122 along a length direction, and is welded to the bracket 113. Wherein the second housing 12 is integrally formed from a metal piece.

As shown in fig. 2, 17 and 19, in some embodiments of the present invention, one insertion end 1111 is provided at each of both ends of the first injection part 111 in the width direction and both ends of the second injection part 112 in the width direction, and the second housing 12 is provided with a positioning part that mates with the insertion end 1111.

In assembling the first and second housings 11 and 12, the insertion end 1111 is first inserted at the positioning portion, thereby pre-positioning the first and second housings 11 and 12, and then the bracket 113 and the second housing 12 are connected by welding.

As shown in fig. 2, 3, 4, 19 and 21, in some embodiments of the present invention, the bracket 113 includes a first connection portion 1131 and a second connection portion 1132 that are disposed opposite to each other, the first connection portion 1131 and the second connection portion 1132 are disposed along a length direction of the housing 10, respectively, and the bracket 113 further includes a first fixing portion 1133 and a second fixing portion 1134 that are disposed opposite to each other, the first fixing portion 1133 and the second fixing portion 1134 are disposed along a width direction of the housing 10, respectively, and the first connection portion 1131, the first fixing portion 1133, the second connection portion 1132 and the second fixing portion 1134 are sequentially connected end to end.

Specifically, the first fixing portion 1133 is connected to the first injection molding portion 111, the second fixing portion 1134 is connected to the second injection molding portion 112, the first connecting portion 1131 is welded to the first side wall 121, and the second connecting portion 1132 is welded to the second side wall 122. The first connecting portion 1131 and the second connecting portion 1132 are disposed above the first fixing portion 1133 and the second fixing portion 1134 along the height direction of the housing 10, so that the first fixing portion 1133 is conveniently inserted below the first injection molding portion 111, the second fixing portion 1134 is inserted below the second injection molding portion 112, and the first connecting portion 1131 and the second connecting portion 1132 are welded with the second housing 12.

Referring again to fig. 2,3, 4, 19, and 21, in some embodiments of the present invention, the first fixing portion 1133 is connected to the first injection molding portion 111, the first fixing portion 1133 is provided with a first limiting protrusion 1135 facing the second fixing portion 1134, the second fixing portion 1134 is connected to the second injection molding portion 112, and the second fixing portion 1134 is provided with a second limiting protrusion 1136 facing the first fixing portion 1133.

Through the arrangement of the first limiting protrusion 1135 and the second limiting protrusion 1136, the amplitude of the vibration of the magnetic circuit assembly 32 can be limited, and the vibration amplitude of the magnetic circuit assembly 32 is prevented from being too large, so that the vibration film 21 is prevented from being impacted and damaged. Further, in order to prevent the upper surface of the yoke 325 from colliding with the first housing 11 during the vibration process, a second damping block 52 is further disposed between the yoke 325 and the first limiting protrusion 1135 and between the yoke 325 and the second limiting protrusion 1136, and the second damping block 52 may be attached to the bottom surfaces of the first limiting protrusion 1135 and the second limiting protrusion 1136. The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A sound-generating vibration device, comprising: A housing, the housing comprising a first housing and a second housing that match each other, the first housing comprising a bracket, and the bracket and the second housing are welded; A sound-generating unit, the sound-generating unit being connected to the first housing, the sound-generating unit comprising a diaphragm and a voice coil for driving the diaphragm to vibrate and generate sound; A vibration motor, the vibration motor comprising a coil and a magnetic circuit assembly, at least one of the coils is respectively disposed on two inner side walls of the second shell that are opposite to each other, the magnetic circuit assembly comprises a central magnet and at least one side magnet disposed on the side of the central magnet, and the side magnet is spaced apart from the central magnet; Among them, at least part of the voice coil is inserted between the side magnet and the center magnet, and reciprocates along its own axial direction, the magnetic circuit component is arranged between the two inner walls of the shell, and is spaced apart from the coil, at least part of the magnetic circuit component reciprocates under the joint action of the coils on the two inner walls, and the reciprocating direction of at least part of the magnetic circuit component is parallel to the vibration direction of the voice coil. 2. The sound-generating vibration device according to claim 1 is characterized in that the first shell further comprises a first injection-molded part and a second injection-molded part arranged at both ends of the first shell in the length direction, and the bracket is used to connect the first injection-molded part and the second injection-molded part. 3. The sound-generating vibration device according to claim 2 is characterized in that the second shell includes a first side wall and a second side wall that are arranged opposite to each other, the first side wall and the second side wall are respectively arranged along the length direction of the second shell, and the first side wall and the second side wall are respectively welded to the bracket. 4. The sound-emitting vibration device according to claim 2 is characterized in that the bracket includes a first connecting portion and a second connecting portion that are relatively arranged, and the first connecting portion and the second connecting portion are respectively arranged along the length direction of the shell; the bracket also includes a first fixing portion and a second fixing portion that are relatively arranged, and the first fixing portion and the second fixing portion are respectively arranged along the width direction of the shell; the first connecting portion, the first fixing portion, the second connecting portion and the second fixing portion are connected in an end-to-end order. 5. The sound-generating vibration device according to claim 4 is characterized in that the first connecting portion and the second connecting portion are arranged above the first fixing portion and the second fixing portion along the height direction of the shell, and the first connecting portion and the second connecting portion are respectively welded to the second shell. 6. The sound-generating vibration device according to claim 4 is characterized in that the first fixing part is connected to the first injection-molded part, the first fixing part is provided with a first limiting protrusion toward the second fixing part, the second fixing part is connected to the second injection-molded part, and the second fixing part is provided with a second limiting protrusion toward the first fixing part. 7. The sound-generating vibration device according to claim 1, characterized in that at least one mounting protrusion protruding toward the interior of the shell is respectively provided on the two inner side walls of the second shell, and the coil is sleeved on the outside of the mounting protrusion. 8. The sound-generating vibration device according to claim 1, characterized in that the shell further comprises a cover plate, which is arranged on a surface of the diaphragm facing away from the voice coil and is connected to the first shell and/or the diaphragm. 9. The sound-generating vibration device according to claim 1 is characterized in that the magnetic circuit assembly also includes a yoke, the center magnet and the side magnet are jointly arranged on the surface of the yoke facing the voice coil, and the yoke is connected to both ends of the length direction of the second shell through an elastic member. 10. An electronic device, characterized by comprising the sound-generating vibration device according to any one of claims 1 to 9.