CN115002622B - A sound-generating vibration device and electronic equipment - Google Patents

Abstract

The present invention belongs to the technical field of terminal equipment manufacturing, and specifically relates to a sound-generating vibration device and an electronic device, wherein the sound-generating vibration device includes a vibration motor and a sound-generating unit, the vibration motor includes a drive system and a magnetic circuit system matched with the drive system, the sound-generating unit includes a vibration system matched with the magnetic circuit system, and the vibration system and the magnetic circuit system have a common vibration direction. According to the sound-generating vibration device of the present invention, while the sound-generating vibration device realizes vibration and sound generation, it not only effectively reduces the overall thickness of the vibration motor and the sound-generating unit in the vibration direction, which not only makes room for optimizing the sound-generating unit, but also can effectively alleviate the shell vibration problem of the generating device and improve the user experience.

Description

Sound production vibrating device and electronic equipment

Technical Field

The invention belongs to the technical field of terminal equipment manufacturing, and particularly relates to a sounding vibration device and electronic equipment.

Background

With the rapid development of intelligent wearable products, the demand of users for sound has risen to the demand for sound quality. The sound of the audio system is emitted by the front-end acoustic transducer, and the quality of the acoustic device affects the sound quality of the whole audio system. In theory, the size of the low-frequency pushing capacity of the loudspeaker in the acoustic device is closely related to the maximum volume pushing quantity pushed by the vibrating diaphragm of the loudspeaker, the maximum volume pushing quantity is improved, and is already the most mainstream direction of the design optimization and application promotion of the micro-loudspeaker, but the vibration generated during sound production of the loudspeaker is correspondingly increased while the maximum volume pushing quantity of the loudspeaker is improved, so that the problem of shell vibration at the whole machine end is caused, and the user experience is influenced.

On the other hand, the demand of the intelligent wearing product for the haptic feedback device is also gradually highlighted, but the light development demand of the intelligent wearing product is contradicted with the large volumes of the acoustic device and the haptic feedback device, and the existing acoustic and haptic devices cannot meet the design demand of the whole machine at the same time.

Disclosure of Invention

The invention aims to provide a sounding vibration device and electronic equipment, which at least solve the problems that the sounding vibration device integrated with a vibration motor in the prior art is large in size and has a shell vibration.

A first aspect of the present invention proposes a sound-emitting vibration device including:

A housing;

the vibration motor is arranged in the shell and comprises a driving system and a magnetic circuit system matched with the driving system, the driving system is fixed on the shell, the magnetic circuit system at least comprises a magnetic yoke, and the magnetic yoke is elastically connected with the shell through an elastic component;

the sound generating unit is arranged in the shell and comprises a vibration system matched with the magnetic circuit system, and the vibration system is elastically connected with the shell and has the same vibration direction with the magnetic circuit system.

According to the sounding vibration device, the vibration motor and the sounding unit are arranged, and the vibration motor and the sounding unit share the magnetic circuit system, so that the overall thickness dimension of the sounding vibration device in the vibration direction is effectively reduced while vibration and sounding are realized, the sounding and vibration performances of the sounding vibration device are ensured, meanwhile, space is reserved for optimizing the sounding unit, and the tone quality of the sounding vibration device can be improved. Meanwhile, when the sounding unit works, as the magnetic circuit system is elastically connected with the shell and receives the reaction force of the vibration system, the magnetic circuit system can synchronously vibrate in the opposite vibration direction of the same vibration frequency with the vibration of the vibration system under the action of the reaction force, so that the vibration effect of the sounding unit is counteracted to a certain extent, the shell vibration problem of the sounding vibration device is reduced, and the user experience is improved. In addition, the elastic component can elastically support the magnetic circuit system, so that the vibration capability of the magnetic circuit system is guaranteed.

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

In some embodiments of the present invention, the magnetic circuit system further includes a side magnet and a center magnet provided on the yoke, a magnetic gap is formed between the side magnet and the center magnet, the vibration system includes a voice coil inserted into the magnetic gap, and the coil is located outside the side magnet.

In some embodiments of the present invention, the elastic component includes at least two elastic members, the at least two elastic members are disposed along a peripheral edge of the yoke, and both ends of any one of the elastic members are respectively connected to the yoke and the housing.

In some embodiments of the present invention, the elastic member includes an elastic portion, and a first connecting portion and a second connecting portion connected to both ends of the elastic portion, respectively, the first connecting portion being connected to the yoke, and the second connecting portion being connected to the housing.

In some embodiments of the present invention, the elastic portion is a W-shaped member, one end of the W-shaped member is formed with the first connection portion extending outward, and the other end is formed with the second connection portion extending outward.

In some embodiments of the present invention, the number of the elastic members is four, and the four elastic members are uniformly arranged at two ends of the housing.

In some embodiments of the invention, the two elastic parts are arranged at two sides of the first connecting part and the second connecting part, the elastic part comprises a U-shaped connecting part and two vibrating arms connected to the free ends of the U-shaped connecting part, one vibrating arm is connected with the first connecting part, and the other vibrating arm is connected with the second connecting part.

In some embodiments of the invention, two ends of the magnetic yoke are provided with L-shaped bending parts, a first folded edge of each bending part is perpendicular to the vibration direction of the magnetic circuit system, a second folded edge is connected with the first connecting part, a boss is arranged on the bottom surface of the shell, and the boss is connected with the second connecting part.

In some embodiments of the invention, the horizontal center line of the magnetic circuit is not coincident with the horizontal center line of the elastic member.

Another aspect of the present invention proposes an electronic apparatus having the sound-emitting vibration device described in any one of the above.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is an exploded view of one embodiment of the acoustic vibration device of FIG. 1;

FIG. 3 is a schematic diagram of the front face of the sound emitting vibration device of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the structure A-A of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the structure B-B of FIG. 3;

FIG. 6 is a schematic view of the elastic member in FIG. 3;

FIG. 7 is a schematic view of the connection structure of the elastic member in FIG. 6;

FIG. 8 is a schematic view of the partial structure of FIG. 7 at another angle;

FIG. 9 is an exploded view of another embodiment of the acoustic vibration device of FIG. 1;

FIG. 10 is a schematic view of the elastic member shown in FIG. 9;

FIG. 11 is a schematic view of the connection structure of the elastic member in FIG. 9;

FIG. 12 is a schematic diagram illustrating the connection of the magnetic circuit system of the elastic member in FIG. 10;

fig. 13 is a schematic diagram of the mechanism of the vibration system of fig. 1.

Reference numerals illustrate:

1, a sounding vibration device;

10, a sounding unit;

11, a vibration system, 111, a vibrating diaphragm, 1111, a folded ring part, 1112, an inner fixing part, 1113, an outer fixing part, 112, a dome and 113, a voice coil;

12, centering support pieces;

20, a vibration motor;

21, a magnetic circuit system, 211, a magnetic yoke, 2111, a bending part, 212, a side magnet, 213, a center magnet, 214, a first magnetic conduction plate and 215, a second magnetic conduction plate;

22, driving a coil;

23, elastic pieces, 231, first connecting parts, 232, second connecting parts, 233, elastic parts, 2331, W-shaped members, 2332, U-shaped connecting parts and 2333, vibrating arms;

30, a shell;

31 cover plate, 32 middle shell, 321 injection molding shell, 3211 first extension part, 322 connecting insert, 3221 second extension part, 33 lower shell, 331 boss, 34 first limit piece, 35 second limit piece, 36-flexible printed circuit board.

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.

As the electronic apparatus is more and more intelligent and light in weight at present, for the sounding vibration device 1 coupled with the vibration motor 20, the sounding quality of the sounding vibration device 1 and the vibration function of the vibration motor 20 are ensured, and meanwhile, the improvement of the sound quality is more focused, so that the performance of the sounding vibration device 1 is improved. A first aspect of the present application proposes a sound emitting vibration device 1 for use in an electronic apparatus to thereby emit sound and vibrate the electronic apparatus.

Referring to fig. 1 to 13, in some embodiments of the present application, a sound emitting vibration apparatus 1 includes a vibration motor 20 and a sound emitting unit 10. The vibration motor 20 includes a driving system and a magnetic circuit system 21 cooperating with the driving system. The sound generating unit 10 includes a vibration system 11 that cooperates with a magnetic circuit system 21. Wherein the vibration motor 20 and the sound generating unit 10 share the same set of magnetic circuit system 21, and the vibration direction of the vibration system 11 is the same as that of the magnetic circuit system 21.

Specifically, as shown in fig. 4-5, the driving system is arranged at the outer side of the magnetic circuit system 21 and is suitable for driving the magnetic circuit system 21 to vibrate up and down to realize the vibration function of the vibration motor 20, and the vibration system 11 is stacked above the magnetic circuit system 21 and drives the vibration system 11 to vibrate through the magnetic circuit system 21 to realize sound production. Due to the sharing of the magnetic circuit system 21, the whole thickness dimension of the vibration motor 20 and the sound generating unit 10 in the vibration direction is effectively reduced while the sound generating vibration device 1 is vibrated and generated, so that the whole thickness dimension of the sound generating vibration device 1 is reduced, sound generation and vibration functions of the sound generating vibration device 1 are ensured, and meanwhile, the sound generating unit in the sound generating vibration device 1 is conveniently optimized to improve sound quality. In addition, when the sounding unit 10 works, since the magnetic circuit system 21 is elastically connected with the housing 30 and receives the reaction force of the vibration system 11, the magnetic circuit system 21 can vibrate synchronously with the vibration of the vibration system 11 in the opposite vibration direction of the same vibration frequency under the action of the reaction force, so that the vibration effect of the sounding unit 10 is counteracted to a certain extent, the problem of shell vibration of the sounding vibration device 1 is reduced, and the user experience is improved.

Specifically, as shown in fig. 4, 5 and 13, in some embodiments of the present application, the vibration system 11 includes a diaphragm 111, a dome 112 and a voice coil 113, the diaphragm 111 is a planar diaphragm 111, the diaphragm 111 includes a collar 1111 and an inner fixing portion 1112, the dome 112 is fixed to the inner fixing portion 1112, and further, the dome 112 is connected to a surface of the inner fixing portion 1112 away from the magnetic circuit system 21. One end of the voice coil 113 is connected to the dome 112, and the other end of the voice coil 113 is inserted into the magnetic gap of the magnetic circuit system 21.

By inserting the bottom end of the voice coil 113 into the magnetic gap of the magnetic circuit system 21, when the voice coil 113 is energized, the voice coil 113 can vibrate up and down along the axis direction of the voice coil under the action of the magnetic circuit system 21 and directly drive the dome 112 to vibrate, thereby vibrating and sounding.

As shown in connection with fig. 4, 5 and 13, in some embodiments of the present application, the folded ring portion 1111 is provided protruding toward the magnetic circuit system 21. That is, the folded ring portion 1111 is convexly provided toward the inner direction of the acoustic vibration device 1, thereby further reducing the outer thickness dimension of the acoustic vibration device 1, hiding the folded ring portion 1111 inside the acoustic vibration device 1, and having a sufficient vibration space, thereby further reducing the overall thickness dimension of the acoustic vibration device 1.

As shown in fig. 2, 5, 7, 8, 9, and 11, in some embodiments of the present application, the magnetic circuit system 21 includes a yoke 211, and a side magnet 212 and a center magnet 213 disposed on the yoke 211, where a magnetic gap is formed between the side magnet 212 and the center magnet 213. The magnetizing directions of the side magnet 212 and the center magnet 213 are opposite, and are perpendicular to the vibration direction of the magnetic circuit system 21.

Specifically, in some embodiments of the present application, the first yoke 211 has a rectangular plate structure, and the side magnet 212 and the center magnet 213 are connected to the upper surface of the yoke 211 by gluing, as shown in fig. 7 and 11. The side magnets 212 are 4 in number, and are arranged in two parallel rows so as to be enclosed on both sides of the center magnet 213, thereby constituting a magnetic gap for insertion of the voice coil 113.

In some embodiments of the present application, the surface of the central magnet 213 facing the vibration system 11 is further provided with a first magnetic conductive plate 214, and the surface of the outer magnet facing the vibration system 11 is further provided with a second magnetic conductive plate 215, and the first magnetic conductive plate 214 and the central magnet 213 form a gap with the second magnetic conductive plate 215 and the side magnet 212. The first and second magnetic conductive plates 214 and 215 are respectively attached to the upper surfaces of the center magnet 213 and the side magnet 212, thereby respectively enhancing the intensity of the magnetic field passing through the voice coil 113.

By inserting the end of the voice coil 113 into the magnetic gap formed by the first magnetic conductive plate 214 and the center magnet 213, the second magnetic conductive plate 215, and the side magnet 212, not only a balanced magnetic driving force can be obtained, but also a vibration space can be fully utilized when the voice coil 113 vibrates.

In some embodiments of the present application, the driving system includes two driving coils 22, where the two driving coils 22 are respectively disposed at two sides of the magnetic circuit system 21, specifically, the driving coils 22 are located in a magnetic field formed by the side magnets 212, when the driving coils 22 are energized, an ampere force exists between the driving coils 22 and the side magnets 212, and the driving of the ampere force causes a relative motion, and because the driving coils 22 are fixedly disposed, the side magnets 212 vibrate under a reaction force, so as to drive the magnetic circuit system 21 to vibrate together, thereby realizing a vibration function of the vibration motor 20.

As shown in fig. 2,4, 5 and 9, in some embodiments of the present invention, the sound-producing vibration device 1 further includes a housing 30, wherein the driving system is fixed to the housing 30, the magnetic circuit system 21 is elastically connected to the housing 30 through an elastic component, and the vibration system 11 is elastically connected to the housing 30.

In some embodiments of the present invention, the housing 30 is a rectangular parallelepiped housing structure including a cover plate 31, a middle housing 32, and a lower housing 33. The cover plate 31 has a rectangular ring-shaped structure, and a central opening is provided at the center thereof for the vibration system 11 to vibrate. The middle shell 32 comprises injection molding shells 321 positioned at two ends and connecting inserts 322 which span a long shaft and are arranged on two sides separately, the injection molding shells 321 and the connecting inserts 322 are integrally molded into a whole to form the middle shell 32, the end part of each injection molding shell 321 is internally provided with a first extension part 3211, so that the first extension parts 3211 are arranged at the opposite corners of the middle shell 32, the end part of each connecting insert 322 is internally provided with a second extension part 3221, and the second extension parts 3221 are positioned between the two first extension parts 3211 at the same end. The upper surface of the middle shell is a plane, the injection molding shell is fixedly connected with the cover plate 31 through a fastener, the lower surface of the middle shell is special-shaped, and the lower shell is welded with the groove-shaped lower shell in an adapting way through connecting inserts arranged on two sides. The cover plate 31, the middle case 32, and the lower case 33 together form a mounting vibration chamber of the vibration motor 20 and the sound generating unit 10.

Further, in some embodiments of the present application, the outer edge of the diaphragm 111 is connected to the middle housing 32 by gluing, hot pressing, or integral injection molding.

Referring to fig. 13 again, the diaphragm 111 is further provided with an external fixing portion 1113, the external fixing portion 1113 is disposed at an outer edge of the diaphragm 111 and connected to the ring-folding portion 1111, the diaphragm 111 is connected to an upper surface of the middle shell 32 through the external fixing portion 1113, and then the fixing portion is pressed by the cooperation of the cover plate 31 and the middle shell 32 to strengthen the connection.

In some embodiments of the present application, the diaphragm 111 is an integrally injection-molded part, so that the overall strength of the diaphragm 111 can be effectively improved, the vibration effect is ensured, and the separation from the dome 112 during the vibration process is avoided.

In some embodiments of the present application, the top end of the voice coil 113 is connected to the dome 112, and the bottom end of the voice coil 113 is connected to the middle case 32 through the centering disc 12 assembly, thereby fixing both ends of the voice coil 113, and ensuring that the voice coil 113 vibrates up and down in the magnetic gap. Specifically, the centering slide assembly includes four centering support pieces 12 disposed along two opposite corners of the middle case 32 and respectively connected to first extending portions 3211 formed by extending inward at opposite corners of the injection molding case 321 in the middle case 32, thereby further securing the supporting strength of the voice coil 113.

In some embodiments of the application, the driving coil 22 is mounted on the groove wall of the lower housing 33, and the groove bottom is provided with a boss 331 adapted to be connected to the magnetic circuit system 21. The driving coil 22 is energized through a flexible printed circuit board 36 provided at the bottom of the lower case 33.

As shown in fig. 2 and 9, in some embodiments of the present application, the vibration motor 20 further includes an elastic member, through which the yoke 211 is coupled to the lower case 33.

In some embodiments of the present application, the elastic member 23 includes an elastic portion 233, and first and second connection portions 231 and 232 connected to both ends of the elastic portion 233, respectively, the first connection portion 231 is connected to the yoke 211, and the second connection portion 232 is connected to the lower case 33.

As shown in fig. 6, in some embodiments of the present application, the elastic portion 233 is a W-shaped member 2331, one end of the W-shaped member 2331 is formed with a first connection portion 231 extending outward, and the other end is formed with a second connection portion 232 extending outward.

Specifically, the elastic member 23 has a planar structure, which includes a W-shaped member 2331 and first and second connection portions 231 and 232 connected to both ends of the W-shaped member 2331, and is adapted to ensure a normal vibration process of the elastic member 23 by the deformability of the W-shaped member 2331. The first connecting portion 231 is connected with the magnetic yoke 211 by welding, the second connecting portion 232 is clamped between the middle shell 32 and the lower shell 33, and the boss 331 arranged on the short axis side of the bottom wall of the lower shell 33 is matched with the bottom surface of the injection molding shell 321 to clamp the second connecting portion 232.

As shown in fig. 7 and 8, in some embodiments of the present application, the number of the elastic members 23 is four, and the four elastic members 23 are uniformly distributed at two ends of the housing 30, so as to further ensure the elastic supporting strength of the magnetic circuit system 21.

As shown in fig. 2, in some embodiments of the present application, the vibration range of the magnetic circuit system 21 is further limited by providing a limiting assembly above and below the magnetic yoke 211, specifically, a first limiting member 34 is provided above the magnetic yoke 211, the first limiting member 34 is provided on the lower surface of a second extending portion 3221 formed by extending inward from the end of the middle housing 32, and is suitable for abutting against the upper surface of the magnetic yoke 211, a second limiting member 35 is provided below the magnetic yoke 211, and the second limiting member 35 is provided on the bottom surface of the lower housing 33 and is suitable for abutting against the lower surface of the magnetic yoke 211.

As shown in fig. 9 and 11, in some embodiments of the present application, the number of the elastic parts 233 is two, the two elastic parts 233 are respectively disposed at two sides of the first connection part 231 and the second connection part 232, and the elastic part 233 includes a U-shaped connection part 2332 and two vibrating arms 2333 connected to the free ends of the U-shaped connection part 2332, wherein one vibrating arm 2333 is connected to the first connection part 231, and the other vibrating arm 2333 is connected to the second connection part 232.

Specifically, the elastic member 23 is approximately in a diamond structure, the first connecting portion 231 and the second connecting portion 232 are disposed at a set of opposite corners of the diamond structure, the two U-shaped connecting portions 2332 are disposed at another set of opposite corners, the U-shaped connecting portions 2332 are connected with the first connecting portion 231 and the second connecting portion 232 through the vibrating arms 2333, the vibrating arms 2333 have deformability, the U-shaped connecting portions 2332 do not have deformability, and the elastic member 23 ensures a normal vibrating process of the elastic member 23 through the compression deformability of the vibrating arms 2333.

Referring to fig. 9 and 11, in some embodiments of the present application, two ends of the yoke 211 are provided with L-shaped bent portions 2111, a first folded edge of the bent portion 2111 is connected to the vibration direction of the magnetic circuit 21, a second folded edge is connected to the first connecting portion 231, a boss 331 is provided on the bottom surface of the housing 30, and the boss 331 is welded or glued to the second connecting portion 232.

As shown in fig. 11, the first edge of the L-shaped bent portion 2111 is perpendicular to the yoke 211, forms a magnetic gap with the central magnet 213 provided on the yoke 211 for the voice coil 113 to vibrate in an inserted manner, and the second edge of the L-shaped bent portion 2111 is parallel to the bottom surface of the lower case 33 and is adapted to be connected to the first connection portion 231. The bottom surface of the lower case 33 is provided with a boss 331 corresponding to the second flange, and the boss 331 is adapted to be connected to the second connection portion 232. Specifically, the boss 331 is a step of the stretching process.

In some embodiments of the present application, as shown in connection with fig. 12, the horizontal centerline of the magnetic circuit 21 is not coincident with the horizontal centerline of the elastic member 23. Specifically, the horizontal center line of the elastic member 23 is the horizontal symmetry axis of the structure, i.e. L1 in fig. 12, the horizontal center line of the magnetic circuit 21 is at the 1/2 position of the heights of the yoke 211, the center magnet 213 and the first magnetic conductive plate 214, i.e. L2 in fig. 12, and the horizontal center line of the magnetic circuit 21 is not coincident with the horizontal center line of the elastic member 23, i.e. a distance h exists between L1 and L2. Based on the fact that the elastic piece 23 is of a diamond-like structure, the magnetic circuit system 21 not only has a first-order mode of up-and-down vibration, but also has a second-order mode of vibration around the central magnet 213 (left-and-right polarization occurs to the first connecting portion 231 relative to the second connecting portion 232), and the horizontal center line of the magnetic circuit system 21 is not overlapped with the horizontal center line of the elastic piece 23, so that the distance between the horizontal center line and the horizontal center line of the elastic piece 23 is equivalent to the moment arm of the second-order mode of the magnetic circuit system 21, and by adding the moment arm, higher frequency is needed for exciting the second-order mode, excitation difficulty of the second-order mode is further improved, vibration of the magnetic circuit system 21 in an undefined direction is reduced, and vibration stability is further improved.

Another aspect of the present application also proposes an electronic apparatus having the above-described sound-emitting vibration device 1. The electronic device adopts all the technical schemes of all the embodiments, so that the electronic device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.

Claims (10)

1. A sound emitting vibration device, comprising:

The vibration device comprises a shell, a middle shell and a lower shell, wherein the shell comprises a cover plate, a middle shell and a lower shell, wherein the cover plate is enclosed to form a vibration cavity, the middle shell comprises injection molding shells at two ends and connecting inserts at two sides of the injection molding shells, the injection molding shells and the connecting inserts are integrally molded, the end part of each injection molding shell is internally extended with a second extension part, so that the second extension parts are arranged at the opposite corners of the middle shell, the end part of each connecting insert is internally extended with a first extension part, and the first extension parts are positioned between the two second extension parts at the same end;

The vibration motor is arranged in the shell and comprises a driving system and a magnetic circuit system matched with the driving system, the driving system comprises a driving coil, the driving coil is fixed on the shell outside the magnetic circuit system, the magnetic circuit system at least comprises a magnetic yoke, and the magnetic yoke is connected with the shell through elastic components positioned at two ends of the magnetic circuit system;

the vibrating system comprises a vibrating diaphragm, wherein the vibrating diaphragm is provided with an outer fixing part, the vibrating diaphragm is connected with the upper surface of the middle shell through the outer fixing part, and then the outer fixing part is pressed by the matching of the cover plate and the middle shell to strengthen the connection;

the elastic component comprises an elastic piece, the elastic piece comprises a second connecting part, and the second connecting part is connected with the boss;

The vibration system comprises a voice coil, four centering support pieces, a first extension part and a second extension part, wherein the bottom end of the voice coil is connected with the middle shell through the centering support pieces;

The upper part of the magnetic yoke is provided with a first limiting piece which is arranged on the lower surface of a second extending part formed by inwards extending the end part of the middle shell and is suitable for being in contact with the upper surface of the magnetic yoke, and the lower part of the magnetic yoke is provided with a second limiting piece which is arranged on the bottom surface of the lower shell and is suitable for being in contact with the lower surface of the magnetic yoke.

2. The sound emitting vibration device of claim 1, wherein,

The magnetic circuit system also comprises a side magnet and a center magnet which are arranged on the magnetic yoke, wherein a magnetic gap is formed between the side magnet and the center magnet;

the voice coil is inserted into the magnetic gap.

3. The sound emitting vibration device of claim 1, wherein,

The elastic component includes two at least elastic components, and two at least elastic components are followed the week of yoke is followed the setting, and any both ends of elastic component are connected respectively the yoke with the casing.

4. The sound emitting vibration device of claim 3, wherein,

The elastic piece comprises an elastic part and a first connecting part, wherein the first connecting part and the second connecting part are respectively connected with two ends of the elastic part, and the first connecting part is connected with the magnetic yoke.

5. The sound emitting vibration apparatus of claim 4, wherein,

The elastic part is a W-shaped member, one end of the W-shaped member extends outwards to form the first connecting part, the other end extends outwards to form the second connecting part, and the W-shaped member, the first connecting part and the second connecting part are located on the same plane.

6. The sound emitting vibration apparatus of claim 5, wherein,

The number of the elastic pieces is four, and the four elastic pieces are uniformly distributed at two ends of the shell.

7. The sound emitting vibration apparatus of claim 4, wherein,

The two elastic parts are arranged on two sides of the first connecting part and the second connecting part, and each elastic part comprises a U-shaped connecting part and two vibrating arms connected to the free ends of the U-shaped connecting parts, wherein one vibrating arm is connected with the first connecting part, and the other vibrating arm is connected with the second connecting part.

8. The sound emitting vibration apparatus of claim 7, wherein,

The two ends of the magnetic yoke are provided with bending parts, each bending part comprises a first folding edge and a second folding edge which are connected in an L shape, the first folding edge is vertically connected with the magnetic yoke, and the second folding edge is connected with the first connecting part.

9. The sound emitting vibration apparatus of claim 8, wherein,

The horizontal center line of the magnetic circuit system is not coincident with the horizontal center line of the elastic piece.

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