CN218634230U - Sound generating device and electronic equipment - Google Patents

Abstract

The application discloses sound generating mechanism and electronic equipment. The sound production device comprises a support, wherein the support is provided with a first end and a second end which are arranged in a back-to-back manner; the first vibration assembly is fixed at the first end of the bracket; the second vibration assembly is fixed at the second end of the bracket; the magnetic circuit system is fixed on the side wall of the support and positioned between the first vibration assembly and the second vibration assembly and is used for driving the first vibration assembly to vibrate, and a channel is formed in the middle of the magnetic circuit system along the axial direction of the magnetic circuit system; and the middle part of the framework is positioned in the channel, the two ends of the framework respectively protrude out of the magnetic circuit system and are respectively connected with the first vibration component and the second vibration component, and the first vibration component and the second vibration component vibrate synchronously.

Description

Sound generating device and electronic equipment

Technical Field

The application relates to the technical field of electroacoustic conversion, in particular to a sound generating device and an electronic device.

Background

A mobile terminal, such as a mobile phone, is generally provided with a receiver. When a user answers a call, a part of sound of the receiver is transmitted to the human ear, and a part of sound leaks to the external space.

In order to solve the above problems, in the related art, a hole is opened in the back cavity of the receiver, and destructive interference is realized in the far field by using opposite-phase sound waves naturally formed by the front cavity and the back cavity of the vibration system, so as to reduce sound leakage. In particular, a diaphragm is usually added to the rear acoustic cavity of the vibrating unit in the receiver. However, the diaphragm is driven only by air pressure of the rear sound cavity, the driving pressure is small, the sound cancellation effect is poor, and sound leakage still exists in the receiver.

SUMMERY OF THE UTILITY MODEL

The application aims at providing a sound generating device and electronic equipment, and the technical problem that sound of an existing telephone receiver leaks is solved at least.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a sound generating apparatus. This sound generating mechanism includes: the bracket is provided with a first end and a second end which are arranged oppositely; the first vibration assembly is fixed at the first end of the bracket; a second vibration assembly fixed to a second end of the bracket; the magnetic circuit system is fixed on the side wall of the bracket, is positioned between the first vibration component and the second vibration component, is used for driving the first vibration component to vibrate, and forms a channel in the middle of the magnetic circuit system along the axial direction of the magnetic circuit system; the middle part of the framework is positioned in the channel, two ends of the framework respectively protrude out of the magnetic circuit system and are respectively connected with the first vibration assembly and the second vibration assembly, and the first vibration assembly and the second vibration assembly vibrate synchronously; the first shell is fixed on one side, opposite to the magnetic circuit system, of the first vibration assembly, the first shell is provided with a first sound hole, the second shell is fixed on one side, opposite to the magnetic circuit system, of the second vibration assembly, the second shell is provided with a second sound hole, the first sound hole and the second sound hole are used for emitting sound waves, and the phase of the sound waves emitted by the first sound hole is opposite to that of the sound waves emitted by the second sound hole.

In a second aspect, an embodiment of the present application provides an electronic device, where the electronic device includes the sound generating apparatus described above.

In an embodiment of the present application, a sound generating device includes a first vibrating component and a second vibrating component. The first vibrating assembly and the second vibrating assembly are connected through the framework. The magnetic circuit system drives the first vibration component to vibrate, and vibrating sound waves are radiated from the first sound hole. The first vibration component drives the second vibration component to vibrate through the framework. The sound waves vibrated by the second vibration member are radiated from the second sound hole. Since the sound wave emitted from the first sound hole and the sound wave emitted from the second sound hole have opposite phases, the sound leakage of the sound generating device can be effectively counteracted. Because first vibration subassembly passes through the skeleton and drives the synchronous vibration of second vibration subassembly, the event has increased the drive power of second vibration subassembly, and this makes the second vibration subassembly reveal the cancellation effect of sound more good to sound generating mechanism to showing the sound that has reduced sound generating mechanism and revealing.

Other features of the present description and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of a sound generating device in an embodiment of the present application;

fig. 2 is a sectional view of a sound emitting device in an embodiment of the present application;

fig. 3 is a partial enlarged view of the receiver module of fig. 2;

fig. 4 is a partial sectional view of an electronic apparatus in an embodiment of the present application.

Description of reference numerals:

100. a support; 101. a side wall; 110. a first end; 120. a second end; 131. a third sound hole; 200. a framework; 300. a magnetic circuit assembly; 330. a magnetic gap; 340. a channel; 350. a side magnetic circuit component; 360. washer; 370. a central magnetic circuit assembly; 410. a second rear acoustic chamber; 420. a first rear acoustic chamber; 430. a first front acoustic chamber; 440. a second front acoustic chamber; 510. a first diaphragm; 520. a voice coil; 610. a second diaphragm; 710. a first housing; 711. a first sound hole; 720. a second housing; 721: a second sound hole; 730. a first baffle plate; 740. a second baffle plate;

800. a housing; 810. a first surface; 811. a first sound outlet; 820. a second surface; 821. a second sound outlet; 830. a side surface; 831. and a third sound outlet.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the design of an existing sound generating device, such as a receiver module, a common sound leakage prevention mode is that another diaphragm is additionally arranged in a rear sound cavity of a vibration component of a receiver, and the diaphragm is driven to vibrate by air pressure of the rear sound cavity so as to prevent sound leakage in a communication process. However, in this method, since the pneumatic driving force is small, the effect of preventing sound leakage of the conventional receiver module is not good.

According to one embodiment of the present application, as shown in fig. 1, 2 and 3, a sound generating device is provided. This sound generating mechanism includes:

a stent 100 having first and second ends 110, 120 disposed opposite one another.

A first vibratory assembly secured to the first end 110 of the bracket 100.

A second vibratory assembly secured to the second end 120 of the bracket 100.

And the magnetic circuit system is fixed on the side wall of the bracket 100 and is positioned between the first vibrating assembly and the second vibrating assembly. The magnetic circuit system is used for driving the first vibration component to vibrate. A passage 340 is formed in the middle of the magnetic circuit system in the axial direction of the magnetic circuit system. And

the skeleton 200, the middle part of skeleton 200 is located in passageway 340. The two ends of the frame 200 protrude out of the magnetic circuit system respectively and are connected with the first vibration component and the second vibration component respectively. The first vibration assembly and the second vibration assembly vibrate synchronously.

A first housing 710 is fixed to the first vibration assembly on the side opposite to the magnetic circuit system. The first housing 710 is provided with a first sound hole 711. A second housing 720 is fixed to the second vibration element on the side opposite to the magnetic circuit system. The second housing 720 is provided with a second sound hole 721. The first sound hole 711 and the second sound hole 721 are used to emit sound waves. The sound wave emitted from the first sound hole 711 is opposite in phase to the sound wave emitted from the second sound hole 721.

As shown in fig. 1 to 3, the sound generating device is a receiver module or a speaker module. The first vibratory assembly may be bonded to the first end 110 of the bracket 100. The second vibratory assembly is bonded to the second end 120 of the bracket 100. The first vibration component is connected with the magnetic circuit system and can vibrate under the driving of the magnetic circuit system so as to convert the electric signal into the acoustic signal. The skeleton 200 passes through magnetic circuit, and two tip of skeleton 200 are connected with first vibration subassembly and second vibration subassembly respectively. After first vibration subassembly takes place the vibration under magnetic circuit's drive, can drive skeleton 200 and take place the vibration, skeleton 200 further can drive the vibration of second vibration subassembly.

The edge of the first shell 710 is fixed to the side of the first vibration assembly opposite to the magnetic circuit system by means of bonding. A first front acoustic chamber 430 is formed between the first vibrating assembly and the first housing 710. The first sound hole 711 communicates with the first front sound chamber 430. The first sound hole 711 is located, for example, directly above the middle of the first vibration assembly or at the side of the first housing 710. The edge of the first shell 710 is fixed to the side of the first vibration assembly opposite to the magnetic circuit system by means of bonding.

The edge of the second housing 720 is fixed to the second vibration element on the side opposite to the magnetic circuit system by means of bonding. A second front acoustic chamber 440 is formed between the second vibration member and the second housing 720. The second sound hole 721 communicates with the second front sound chamber 440. The second sound hole 721 is, for example, located directly above the middle of the second vibration member or located at the side of the second housing 720.

The first vibration component, the second vibration component and the support jointly enclose a rear sound cavity of the sound production device. For example, between the first vibration component and the magnetic circuit system is a first back acoustic cavity 420. Between the second vibration component and the magnetic circuit is a second back acoustic cavity 410.

In an actual operation state, sound waves generated by the vibration of the first vibration member propagate outwards from the first sound hole 711 after passing through the first front sound cavity 430. The second front acoustic cavity 440 is located on the side of the second vibrating component remote from the magnetic circuit system. When the second vibration element vibrates along with the first vibration element under the driving of the frame 200, the sound waves are transmitted outwards from the second sound hole 721 via the second front sound cavity 440. Since the first vibration component and the second vibration component vibrate synchronously, and the first sound hole 711 and the second sound hole 721 are both located on the opposite side of the corresponding vibration component from the magnetic circuit system, the phase of the sound wave emitted from the first sound hole 711 is opposite to the phase of the sound wave emitted from the second sound hole 721.

In an embodiment of the present application, a sound generating device includes a first vibrating component and a second vibrating component. The first vibration assembly and the second vibration assembly are connected by a skeleton 200. The magnetic circuit system drives the first vibration component to vibrate, and the vibrating sound wave is radiated from the first sound hole 711. The first vibration component drives the second vibration component to vibrate through the framework 200. The sound waves vibrated by the second vibration member are radiated from the second sound hole 721. Since the sound wave emitted from the first sound hole 711 and the sound wave emitted from the second sound hole 721 are opposite in phase, the sound leakage of the sound emitting device can be effectively cancelled. Because first vibration subassembly passes through skeleton 200 and drives the synchronous vibration of second vibration subassembly, the event has increased the drive power of second vibration subassembly, and this makes the second vibration subassembly reveal the cancellation effect of sound more excellent to sound generating mechanism to showing the sound that has reduced sound generating mechanism and revealing.

In addition, the sound generating mechanism of this application embodiment can realize that single magnetic circuit drives two vibration subassemblies and takes place the vibration, with current design, sets up two magnetic circuit at sound generating mechanism, and two magnetic circuit drive the mode of the vibration subassembly that corresponds respectively and compare, and the technical scheme of this application embodiment when reinforcing sound generating mechanism prevents that sound from revealing the effect, has further simplified sound generating mechanism's structure, has reduced sound generating mechanism's height, is favorable to sound generating mechanism's miniaturization and frivolousization.

In the existing design, the sound generating device is used not only as a receiver module in a receiver mode, but also as a speaker module in a sound output mode of the electronic device. At this time, the sound generating device is used as a speaker module to increase the volume of sound emitted from the electronic device or increase the stereo effect of the electronic device. However, due to the arrangement of the second vibration component and the second sound hole 721, when the sound generating device is used as a speaker module in a sound external mode, the second sound hole 721 is communicated with the outside, and the sound generated by the sound generating device is offset, so that the sound generating effect of the sound generating device is affected.

To solve this technical problem, in one embodiment, a portion of the bracket 100 between the first vibration member and the second vibration member is provided with a third sound hole 131. The third sound hole 131 is used to emit sound waves. The sound wave emitted from the third sound hole 131 is in the same phase as the sound wave emitted from the first sound hole 711.

As shown in fig. 1-2, the magnetic circuit system has an upper surface and a lower surface, and a second back acoustic cavity 410 is between the lower surface and the second vibrating member. The portion of the holder 100 located in the second rear sound chamber 410 is provided with a third sound hole 131. The sound emitting device is communicated with the outside through the third sound hole 131. When the sound emitting apparatus is used as a receiver module, the third sound hole 131 is closed. When the sound emitting device is used as a speaker module, the third sound hole 131 is opened. The sound emitting device radiates sound waves outward through the first sound hole 711 and the third sound hole 131. The second sound hole 721 can be closed or opened according to the requirement in different usage scenarios. For example, when the sound generating device is used as a receiver module, the second sound hole 721 is opened; when the speaker module is used, the second sound hole 721 is closed or partially opened.

As shown in fig. 2, the upper surface of the magnetic circuit system is a surface of the magnetic circuit system facing the first vibration component, and the lower surface of the magnetic circuit system is a surface of the magnetic circuit system facing the second vibration component and opposite to the upper surface. The third sound hole 131 is opened at a portion of the bracket 100 between the magnetic circuit system 300 and the second vibration system. The third sound hole 131 can emit sound waves outward in the same phase as the first sound hole 711, so that the sound waves emitted from the first sound hole 711 and the third sound hole 131 can be superimposed on each other. The third sound hole 131 can effectively enhance the sound emitting effect of the sound emitting device, and a stereo effect can be formed due to the simultaneous sound emission of the first sound hole 711 and the third sound hole 131. The sound generating device can be used as a loudspeaker module.

In one embodiment, as shown in fig. 2-3, the sound generator includes a first flap 730, and the first flap 730 is located in the third sound hole 131 and can move to open and close the third sound hole 131.

A first stopper 730 is provided on the hole wall of the third sound hole 131. For example, the first flap 730 is hinged to the hole wall of the third sound hole 131. The first shutter 730 can open and close the third sound hole 131. Alternatively, the first blocking piece 730 can slide relative to the third sound hole 171 perpendicularly to the sound emitting direction to open and close the third sound hole.

For example, when the sound generating apparatus is used as a receiver module, the first flap 730 closes the third sound hole 131. The sound generating device generates sound waves through the first sound hole 711 and the second sound hole 721 to reduce sound leakage of the sound generating device and improve privacy.

When the sound generating apparatus is used as a speaker module, the first blocking piece 730 opens the third sound hole 131. The sound emission device emits sound waves through the first sound hole 711 and the third sound hole 131 to increase the loudness of the sound emission device. In this mode, the second sound hole 721 may be opened or closed as needed.

The first blocking piece 730 can effectively control the opening and closing of the third sound hole 131, so as to adjust the use mode of the sound generating device.

Of course, the first blocking piece 730 can also adjust the cross-sectional area of the third sound hole 131 to adjust the sound output amount of the third sound hole 131.

In one embodiment, as shown in fig. 2, the sound generating apparatus further includes a second blocking piece 740, and the second blocking piece 740 is connected to the second housing 720 and can move relative to the second housing 720 to open and close the second sound hole 721.

Similar to the first flap 730, the second flap 740 can be rotated open or slid open.

For example, when the sound generating apparatus is used as a receiver module, the second flap 740 opens the second sound hole 721. The first shutter 730 closes the third sound hole 131. The sound generating device generates sound waves through the first sound hole 711 and the second sound hole 721 to reduce sound leakage of the sound generating device and improve privacy.

When the sound generating apparatus is used as a speaker module, the first blocking piece 730 opens the third sound hole 131. The second shutter 740 closes the second sound hole 721. The sound emission device emits sound waves through the first sound hole 711 and the third sound hole 131 to increase the loudness of the sound emission device.

The second blocking piece 740 can effectively control the opening and closing of the second sound hole 721, so as to adjust the use mode of the sound generating device. Of course, the second baffle 740 can also adjust the cross-sectional area of the second sound hole 721 to adjust the sound output of the second sound hole 721.

In one embodiment, the first vibration assembly includes a first diaphragm 510 and a voice coil 520 coupled to the first diaphragm 510. For example, the voice coil 520 is bonded to the first diaphragm 510. The second vibration assembly includes a second diaphragm 610.

Magnetic circuit system forms magnetic gap 330, voice coil 520 is suspended in magnetic gap 330, a channel 340 is formed in the middle of magnetic circuit system along the axial direction of magnetic circuit system, and magnetic gap 330 is located between channel 340 and support 100. A part of the frame 200 is located in the channel 340, and one end of the frame 200 extends out of the first opening of the channel 340 and is fixed on the first diaphragm 510. The other end of the frame 200 protrudes from the second opening of the channel 340 and is fixed to the second diaphragm 610.

In this example, as shown in fig. 1 to 2, after the voice coil 520 is energized, it is vibrated by the magnetic field force in the magnetic gap 330. The voice coil 520 drives the first diaphragm 510 to vibrate. The first diaphragm 510 drives the frame 200 to vibrate. The frame 200 drives the second diaphragm 610 to vibrate. The first diaphragm 510 and the second diaphragm 610 drive air to vibrate to emit sound waves. Both ends of the frame 200 are extended out of both ends of the passage 340, respectively. Both ends of the frame 200 are bonded to the first diaphragm 510 and the second diaphragm 610 by glue. The height of the frame 200 is greater than that of the magnetic circuit system, thereby providing a space for the first diaphragm 510 and the second diaphragm 610 to vibrate.

Alternatively, the skeleton 200 is a cylindrical structure, a columnar structure, or the like. The cross-section of the skeleton 200 is circular, rectangular, etc. The framework 200 is made of plastic, rubber, metal, ceramic, etc.

In one embodiment, as shown in fig. 1 and 2, the magnetic circuit system includes a magnetic circuit assembly 300 and a washer 360, a portion of the washer 360 is fixed to a side wall of the bracket 100, the magnetic circuit assembly 300 is fixed to the washer 360, a middle portion of the washer 360 and a middle portion of the magnetic circuit assembly jointly form the channel 340, and a gap is formed between the magnetic circuit system and the framework 200.

The washer 360 serves to gather the magnetic lines of force of the magnetic circuit assembly to increase the magnetic field strength within the magnetic gap 330. The washer 360 is made of low-carbon steel. Washer 360 is a sheet-like structure. The magnetic circuit assembly is fixed on the washer by glue. The outer edge of washer 360 is embedded in the side wall of holder 100. For example, the washer 360 and the bracket 100 are fixed together by means of insert molding. This makes the connection of the magnetic circuit system to the bracket 100 more secure. The cross-section of the channel 340 is circular, rectangular, etc. A gap is formed between the magnetic circuit system and the frame 200, so that the mutual interference between the magnetic circuit system and the frame 200 can be effectively avoided.

Further, the gap makes the first rear acoustic chamber 420 communicate with the second rear acoustic chamber 410. In this way, gas can be transferred between the first back acoustic chamber 420 and the second back acoustic chamber 410. The air pressure formed by the vibration of the first vibration assembly can drive the second vibration assembly, so that the vibration effect of the second vibration assembly is improved.

In one embodiment, the magnetic circuit assembly 300 includes a side magnetic circuit assembly 350 and a central magnetic circuit assembly 370, the side magnetic circuit assembly 350 is disposed around the central magnetic circuit assembly 370, a magnetic gap 330 is formed between the side magnetic circuit assembly 350 and the central magnetic circuit assembly 370, and a middle portion of the central magnetic circuit assembly 370 and a middle portion of the washer 360 jointly form the channel 340.

For example, as shown in fig. 2, the side magnetic circuit assembly 350 has an upper surface and a lower surface which are oppositely arranged, the washer 360 is fixedly connected to the lower surface of the side magnetic circuit assembly 350, the central magnetic circuit assembly 370 is fixed to the washer 360, the central magnetic circuit assembly 370 and the side magnetic circuit assembly 350 are located on the same side of the washer 360, through holes are respectively formed in the middle portions of the central magnetic circuit assembly 370 and the washer 360, and the two through holes form the channel 340. Portions of the skeleton 200 are located within the channels 340. In this way, voice coil 520 vibrates in magnetic gap 330 to drive first diaphragm 510 to vibrate, and first diaphragm 510 can drive second diaphragm 610 to vibrate through skeleton 200. The combination of washer 360, central magnetic circuit assembly 350 and side magnetic circuit assembly 370 can effectively increase the magnetic field strength in magnetic gap 330, so that the driving force of the first vibrating assembly and the second vibrating assembly is stronger.

For example, in order to further improve the uniformity of sound, the first diaphragm 510, the skeleton 200, and the second diaphragm 610 are coaxially disposed. This effectively reduces the polarization of the first diaphragm 510 and the second diaphragm 610, thereby effectively improving the uniformity of sound.

In one embodiment, as shown in fig. 2, portions of the side magnetic circuit assemblies 310 are embedded within the side walls 101 of the support 100. For example, the magnetic circuit side assembly 310 is fixed in the side wall of the bracket 100 by insert molding, or the magnetic circuit side assembly 310 is fixed in the side wall 101 of the bracket 100 by glue. This arrangement can effectively improve the connection strength between the magnetic circuit system and the bracket 100, and reduce the overall size of the sound generating device.

In one embodiment, as shown in fig. 2 to 3, a third sound hole 131 is formed by extending the side wall 101 of the bracket 100, and the third sound hole 131 is bent toward a direction close to the first vibration member.

For example, the support 100 and the third sound hole 131 at the side wall 101 are formed by injection molding. The third sound hole 131 is formed in a bent structure toward a direction close to the first vibration assembly. In this way, the sound waves emitted from the third sound hole 131 and the first sound hole 711 can be more effectively superimposed, so that the sound volume of the sound emitting device can be significantly increased, and a good stereo effect can be achieved.

According to another aspect of the present application, an electronic device is provided. The electronic device is, for example, a mobile phone, a smart watch, or the like. As shown in fig. 4, a mobile phone is taken as an example for explanation. The electronic device includes the above-described sound generating apparatus and a housing 800. The sound generating device is located in the housing 800, the housing 800 includes a top wall 810 and a bottom wall 820 which are arranged oppositely, and a side wall 830 connecting the top wall 810 and the bottom wall 820, a first sound hole 811 is provided on the top wall 810, and a second sound hole 821 is provided at a position where the bottom wall 820 and the side wall 830 are connected. The housing 800 has a receiving cavity therein. A sound generating device is fixed in the containing cavity. The first sound outlet hole 811 communicates with the first sound hole 711, and the second sound outlet hole 821 can communicate with the second sound hole 721. The first sound outlet 811 is located in the top wall 810. The top wall 810 is, for example, the surface on which the screen of the mobile phone is located, and is also the surface closer to the ear when the user answers the phone. The bottom wall 820 is the back of the handset. The first sound outlet hole 811 and the second sound outlet hole 821 are respectively provided on two opposite surfaces of the electronic apparatus.

For example, a third sound outlet 831 is opened in the side wall 830 of the casing 800, and the third sound outlet 131 is communicated with the third sound outlet 831. The case 800 is configured such that when the sound generating apparatus is used as a receiver module, the third sound outlet 831 is closed to seal the third sound outlet 131, the second sound outlet 821 communicates with the second sound outlet 721, and the first sound outlet 811 communicates with the first sound outlet 711. When the sound generating apparatus is used as a speaker module, the third sound outlet 831 is communicated with the third sound outlet 131, the first sound outlet 811 is communicated with the first sound outlet 721, and the second sound outlet 821 is closed.

For example, a switch structure may be provided on the housing 800 of the electronic device to open and close the third sound outlet 831 and the second sound outlet 821.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A sound generating device, comprising:

the bracket is provided with a first end and a second end which are arranged oppositely;

the first vibration assembly is fixed at the first end of the bracket;

a second vibratory assembly secured to a second end of the bracket;

the magnetic circuit system is fixed on the side wall of the bracket, is positioned between the first vibration component and the second vibration component, is used for driving the first vibration component to vibrate, and forms a channel in the middle of the magnetic circuit system along the axial direction of the magnetic circuit system; and

the middle part of the framework is positioned in the channel, two ends of the framework respectively protrude out of the magnetic circuit system and are respectively connected with the first vibration assembly and the second vibration assembly, and the first vibration assembly and the second vibration assembly vibrate synchronously;

the first shell is fixed on one side, back to the back, of the first vibration assembly and the magnetic circuit system, the first shell is provided with a first sound hole, the second shell is fixed on one side, back to the back, of the second vibration assembly and the magnetic circuit system, the second shell is provided with a second sound hole, the first sound hole and the second sound hole are used for emitting sound waves, and the phase of the sound waves emitted by the first sound hole is opposite to that of the sound waves emitted by the second sound hole.

2. The sound generating apparatus according to claim 1, wherein a portion of the support located between the first vibration member and the second vibration member is provided with a third sound hole for emitting sound waves, and the sound waves emitted from the third sound hole have the same phase as the sound waves emitted from the first sound hole.

3. The sound generating apparatus of claim 1, wherein the first vibration assembly comprises a first diaphragm and a voice coil connected to the first diaphragm;

the second vibration assembly comprises a second diaphragm;

the magnetic circuit system forms a magnetic gap, the voice coil is suspended in the magnetic gap, and the magnetic gap is positioned between the channel and the bracket;

one end of the framework extends out of the first opening of the channel and is fixed on the first vibrating diaphragm;

the other end of the framework extends out of the second opening of the channel and is fixed on the second vibrating diaphragm.

4. The sounding device according to claim 1, wherein the magnetic circuit system comprises a magnetic circuit assembly and a washer, a portion of the washer is fixed to a side wall of the bracket, the magnetic circuit assembly is fixed to the washer, a middle portion of the washer and a middle portion of the magnetic circuit assembly jointly form the channel, and a gap is formed between the magnetic circuit system and the framework.

5. The apparatus according to claim 4, wherein said magnetic circuit assembly comprises a side magnetic circuit assembly and a central magnetic circuit assembly, said side magnetic circuit assembly is disposed around said central magnetic circuit assembly, a magnetic gap is formed between said side magnetic circuit assembly and said central magnetic circuit assembly, and a middle portion of said central magnetic circuit assembly and a middle portion of said washer together form said channel.

6. The sound generating apparatus of claim 5 wherein said side magnetic circuit member is partially embedded in the side wall of said support frame.

7. The sound generating apparatus as claimed in claim 2, wherein a third sound hole is formed by extending a side wall of the holder, the third sound hole being bent toward a direction close to the first vibration member.

8. The apparatus according to claim 2, further comprising a first shutter plate, said first shutter plate being located in said third sound hole and being movable to open and close said third sound hole.

9. The sound generating apparatus according to claim 8, further comprising a second shutter, wherein said second shutter is connected to said second housing and is movable relative to said second housing to open and close said second sound hole.

10. An electronic device, characterized in that it comprises a sound emitting device according to any one of claims 1-9.

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