WO2023246573A1

WO2023246573A1 - Sound production module and electronic device

Info

Publication number: WO2023246573A1
Application number: PCT/CN2023/100079
Authority: WO
Inventors: 阮清波; 曹惠娴
Original assignee: 维沃移动通信有限公司
Priority date: 2022-06-20
Filing date: 2023-06-14
Publication date: 2023-12-28
Also published as: CN115103264A

Abstract

Disclosed in the present invention are a sound production module and an electronic device. The disclosed sound production module comprises a housing, a first diaphragm, a second diaphragm, and a driving mechanism; the first diaphragm, the second diaphragm and the driving mechanism are all arranged on the housing; the first diaphragm and the second diaphragm are respectively arranged on two opposite sides of the sound production module; the driving mechanism is connected to the first diaphragm and the second diaphragm, respectively; and the driving mechanism is used for driving the first diaphragm and the second diaphragm to vibrate synchronously.

Description

Sound modules and electronic equipment

cross reference

This invention claims the priority of the Chinese patent application submitted to the China Patent Office on June 20, 2022, with the application number 202210700068.5 and the invention name "Sound-generating module and electronic device". The entire content of this application is incorporated by reference in this invention. middle.

Technical field

The present invention relates to the technical field of electronic equipment, and in particular, to a sound module and electronic equipment.

Background technique

The sound module in electronic equipment plays the role of transmitting call information. When the electronic equipment is working, part of the sound is transmitted to the human ear, and part of the sound is transmitted to the external space. When electronic devices are communicating, sometimes it is necessary to minimize the leakage of sound in order to protect the communication content, and sometimes it is necessary to raise the sound.

As electronic equipment's requirements for full-screen displays become more and more extreme, the sound holes of the sound-emitting modules are increasingly moving toward the end of the electronic equipment, and the gaps are getting narrower and narrower, and the coupling between the gaps and the human ear is getting worse and tighter. , due to the diffraction effect of sound, more and more sounds will be leaked to the outside, resulting in poor privacy during communication. In related technologies, in order to reduce sound leakage, a hole is usually made in the rear cavity of a sound-emitting module, and the anti-phase sounds of the front cavity and the rear cavity at low frequencies are canceled at a distance, thereby reducing sound leakage. However, since the same sound source is used, that is, the same diaphragm is shared, the sound radiated by the sound module to the rear cavity cannot be adjusted, which is not conducive to the sound module switching between reducing sound leakage and improving sound.

Contents of the invention

The invention discloses a sound-generating module and an electronic device to solve the problem that when the sound-generating module switches between reducing sound leakage and improving sound, the same sound source is used, which is not conducive to switching.

In order to solve the above technical problems, the present invention is implemented as follows:

In a first aspect, this application discloses a sound-generating module, which includes a housing, a first diaphragm, a second diaphragm, and a driving mechanism. The first diaphragm, the second diaphragm, and the driving mechanism are all provided with On the housing, the first diaphragm and the second diaphragm are arranged on opposite sides of the sound-generating module, and the driving mechanism is connected to the first diaphragm and the second diaphragm respectively. The membranes are connected, and the driving mechanism is used to drive the first diaphragm and the second diaphragm to vibrate synchronously.

In a second aspect, this application also discloses an electronic device, including the sound module described in the first aspect.

The technical solution adopted by the present invention can achieve the following technical effects:

The sound-generating module disclosed in the embodiment of the present application sets two diaphragms, namely a first diaphragm and a second diaphragm, so that the driving mechanism can drive the first diaphragm and the second diaphragm to vibrate synchronously at the same time. Using a single diaphragm vibration to produce sound, it has multiple sound sources, so that the sound module can be better controlled to superimpose or cancel the sounds emitted, which can facilitate the sound module to reduce sound leakage and improve the sound. switch between.

Description of the drawings

Figure 1 is a perspective structural schematic diagram of the sound-generating module disclosed in the second state according to the embodiment of the present invention;

Figure 2 is a perspective structural schematic diagram of the sound-generating module disclosed in the first state according to the embodiment of the present invention;

Figure 3 is a schematic structural diagram of the sound-generating module disclosed in the embodiment of the present invention in a first state;

Figure 4 is an exploded schematic diagram of the sound module disclosed in the embodiment of the present invention;

Figure 5 is a schematic structural diagram of the transmission mechanism disclosed in the embodiment of the present invention;

Figure 6 is a schematic diagram of the explosion in Figure 5;

Figure 7 is a cross-sectional view of the sound-generating module disclosed in the embodiment of the present invention;

Figure 8 is a schematic structural diagram of an electronic device.

Explanation of reference symbols:
100-shell,
200-first diaphragm,
300-second diaphragm,
400-driving mechanism, 410-driving part, 420-second electromagnetic coil, 430-first magnet,
500-transmission mechanism, 510-first ejector pin assembly, 520-second ejector pin assembly, 521-first ejector pin,
522-second ejector pin, 523-turntable, 523a-rotating hole, 523b-limiting hole, 524-limiting component, 524a-braking block, 524b-rotating rod, 530-pin,
600-magnetic rod, 700-accommodating inner cavity, 800-first cover, 900-second cover.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The technical solutions disclosed in various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIGS. 1 to 8 , an embodiment of the present invention discloses a sound-generating module. The disclosed sound-generating module includes a housing 100 , a first diaphragm 200 , a second diaphragm 300 and a driving mechanism 400 .

The first diaphragm 200, the second diaphragm 300 and the driving mechanism 400 are all provided in the housing 100. The first diaphragm 200 and the second diaphragm 300 are components that produce sound through vibration.

The first diaphragm 200 and the second diaphragm 300 are arranged at intervals. The first diaphragm 200 and the second diaphragm 300 are respectively arranged on opposite sides of the sound-generating module. The driving mechanism 400 can be arranged on the first diaphragm 200 and the second diaphragm 300 . between the second diaphragm 300 .

The driving mechanism 400 is connected to the first diaphragm 200 and the second diaphragm 300 respectively. The driving mechanism 400 is used to drive the first diaphragm 200 and the second diaphragm 300 to vibrate synchronously, that is, the first diaphragm 200 and the second diaphragm 300 Vibrating together, the first diaphragm 200 emits a first sound, and the second diaphragm 300 emits a second sound. By controlling the vibrations of the first diaphragm 200 and the second diaphragm 300, the first sound and the second sound can be controlled to overlap each other. To increase or decrease the sound emitted by the generating module, the sound emitted by the sound emitting module can be increased, or the sound emitted by the sound emitting module can be reduced. After reducing the sound emitted by the generating module, the sound leakage can be reduced.

The sound-generating module disclosed in the embodiment of the present application is provided with two diaphragms, namely the first diaphragm 200 and the second diaphragm 300, so that the driving mechanism 400 can simultaneously drive the first diaphragm 200 and the second diaphragm 300 to vibrate synchronously. Therefore, compared with the use of a single diaphragm vibration to produce sound in related technologies, there are multiple sound sources, so that the sound-generating module can be better controlled to superimpose or cancel the sounds emitted, which can facilitate the sound-generating module to reduce leakage. Switch between tone and raised voice.

Further, the driving mechanism 400 is used to drive the first diaphragm 200 and the second diaphragm 300 to vibrate synchronously, that is, the first diaphragm 200 and the second diaphragm 300 vibrate together, so that the sound-generating module is in the first state or the second state. state.

In the first state, the first sound emitted by the vibration of the first diaphragm 200 and the second sound emitted by the vibration of the second diaphragm 300 have the same phase. The first sound and the second sound can be superimposed at the intersection to increase the sound. As a result, the sound emitted by the module is increased, which can be used for external amplification of electronic equipment. In the second state, the first diaphragm 200 vibrates to emit the first sound, and the second diaphragm 300 vibrates to emit the first sound. The phase of the second sound is opposite, and the first sound and the second sound are superimposed at the intersection to reduce the sound, which can correspond to the scenario where the electronic device prevents sound leakage in the call mode.

The sound-generating module disclosed in the embodiment of the present application is provided with two diaphragms, namely the first diaphragm 200 and the second diaphragm 300, so that the driving mechanism 400 can simultaneously drive the first diaphragm 200 and the second diaphragm 300 to vibrate synchronously. When the first sound emitted by the vibration of the first diaphragm 200 and the second sound emitted by the vibration of the second diaphragm 300 have the same phase, the first sound and the second sound can be superimposed outside the sound-generating module to improve the sound-generating mode. The sound produced by the group. When the first sound emitted by the vibration of the first diaphragm 200 and the second sound emitted by the vibration of the second diaphragm 300 are in opposite phases, the first sound and the second sound can be superimposed outside the sound-generating module to reduce the transmission of the sound-generating module. This can effectively solve the problem that the sound module only includes one diaphragm and cannot achieve a better switching between improving the sound of the sound module and reducing the sound leakage of the sound module.

Specifically, the first diaphragm 200 can be arranged opposite to the second diaphragm 300. When the first diaphragm 200 and the second diaphragm 300 move in the same direction, the first diaphragm 200 and the second diaphragm 300 respectively emit signals with opposite phases. For the first sound and the second sound, when the first diaphragm 200 and the second diaphragm 300 move in opposite directions, the first diaphragm 200 and the second diaphragm 300 can respectively emit the first sound and the second sound with the same phase. The driving mechanism can be multiple linear drive motors, or electromagnetic drive components, etc. There are no specific restrictions on the driving mechanism here.

The sound-generating module may also include a transmission mechanism 500 , which may be located between the first diaphragm 200 and the second diaphragm 300 . The transmission mechanism 500 may include a first ejector pin assembly 510 and a second ejector pin assembly 520 . The driving mechanism 400 may include a driving member 410. The first side wall of the driving member 410 may be connected to the first diaphragm 200 through the first ejector pin assembly 510. The second side wall of the driving member 410 may be connected to the second diaphragm 200 through the second ejector pin assembly 520. The diaphragms 300 are connected, and the first side wall and the second side wall are arranged oppositely. The driving member 410 drives the first diaphragm 20 through the first ejector pin assembly 510 and the second ejector pin assembly 520 respectively. 0 and the second diaphragm 300 vibrates.

By configuring the transmission mechanism 500 to include a first ejector pin assembly 510 and a second ejector pin assembly 520 , the driving mechanism 400 includes a driving member 410 , so that the first side wall of the driving member 410 is connected to the first diaphragm 200 through the first ejector pin assembly 510 , the second side wall of the driving member 410 is connected to the second diaphragm 300 through the second ejector assembly 520, and the first side wall and the second side wall are arranged oppositely, so that when the driving member 410 moves, the driving member 410 can be driven at the same time The first diaphragm 200 and the second diaphragm 300 vibrate, so that the linkage between the first diaphragm 200 and the second diaphragm 300 is better.

In the first state, the driving member 410 can drive the first diaphragm 200 and the second diaphragm 300 to vibrate in the same direction through the first ejector pin assembly 510 and the second ejector pin assembly 520, respectively, so that the first diaphragm 200 and the second diaphragm 300 vibrate in the same direction. The membrane 300 respectively emits the first sound and the second sound with opposite phases. In the second state, the driving member 410 can drive the first diaphragm 200 and the second diaphragm 300 to vibrate in opposite directions through the first ejector pin assembly 510 and the second ejector pin assembly 520, so that the first diaphragm 200 and the second diaphragm 300 vibrate in opposite directions. The membrane 300 can respectively emit the first sound and the second sound with the same phase.

Specifically, the second ejector pin assembly 520 may include a first ejector pin 521 , a second ejector pin 522 , a rotating disk 523 and a limiting component 524 . The first end of the first ejector pin 521 can be connected to the second diaphragm 300 , the second end of the first ejector pin 521 can be rotationally connected to the turntable 523 , and the first end of the second ejector pin 522 can be connected to the second side wall of the driving member 410 , the second end of the second ejector pin 522 can be rotatably connected to the turntable 523, and the second end of the first ejector pin 521 and the second end of the second ejector pin 522 can be respectively connected to both sides of the center of the turntable 523, the limiting component 524 It can be movably provided on the housing 100 . Both the first ejector pin 521 and the second ejector pin 522 can be rotationally connected to the turntable 523 through the pin shaft 530 . Specifically, the second end of the first ejector pin 521 and the second end of the second ejector pin 522 may be respectively connected to two sides of the turntable 523 that are symmetrical with respect to the center of the turntable 523 .

In the first state, the limiting component 524 can limit the rotation of the turntable 523, so that the first top The needle 521, the second ejector pin 522 and the turntable 523 form a fixedly connected integral structure, which is equivalent to a rod. The driving member 410 moves to drive the first ejector pin 521, the turntable 523 and the second ejector pin 522 together along the second diaphragm 300. The first ejector pin assembly 510 and the second ejector pin assembly 520 move synchronously with the movement of the driving member 410. When the driving member 410 moves, it can drive the first diaphragm 200 and the second diaphragm 300 to vibrate in the same direction. In the second state, the limiting component 524 is limitedly matched with the turntable 523 so that the turntable 523 rotates around its center, the movement directions of the first ejector pin 521 and the second ejector pin 522 are opposite, and the movement of the driving member 410 drives the first ejector pin assembly 510 and the second ejector pin 522 move in the same direction, that is, the first ejector pin assembly 510 drives the first diaphragm 200 and the first ejector pin 521 drives the second diaphragm 300 in opposite vibration directions, so that the first diaphragm 200 and the second diaphragm 300 Reverse vibration.

By disposing the second ejector pin assembly 520 as the first ejector pin 521, the second ejector pin 522, the turntable 523 and the limiting component 524, the first end of the first ejector pin 521 can be connected to the second diaphragm 300, and the first end of the first ejector pin 521 can be connected to the second diaphragm 300. The second end can be rotatably connected with the turntable 523, the first end of the second ejector pin 522 can be connected with the second side wall of the driving member 410, the second end of the second ejector pin 522 can be rotatably connected with the turntable 523, and the first end of the first ejector pin 521 can be rotatably connected with the turntable 523. The second end and the second end of the second thimble 522 can be connected to both sides of the center of the turntable 523 respectively, so that the rotation of the turntable 523 can be limited or the turntable 523 can be rotated around its center by controlling the cooperation of the limiting component 524 and the turntable 523 By rotating, the sound-emitting module can be switched in different states by controlling the turntable 523.

Specifically, the limiting component 524 may be a prismatic rod, and the center of the turntable 523 may have a mounting hole adapted to the prismatic rod, and one end of the prismatic rod may be installed in the mounting hole. In the first state, the rotation of the prismatic rod is restricted, and the prismatic rod can move in the vibration direction together with the turntable 523 . In the second state, the prismatic rod is rotated by the driving member, so that the prismatic rod drives the turntable 523 to rotate together.

In another embodiment, the limiting assembly 524 may include a braking block 524a and a rotating rod 5 24b, both the rotating rod 524b and the braking block 524a can be movably connected to the housing 100, and a rotating hole 523a can be provided in the center of the turntable 523. In the first state, the rotating rod 524b is separated from the turntable 523, the brake block 524a can be connected with the turntable 523, and the brake block 524a restricts the first ejector pin 521 and the second ejector pin 522 from rotating relative to the turntable to limit the rotation of the turntable 523, Therefore, the first ejector pin 521 and the second ejector pin 522 and the turntable 523 form a relatively non-rotatable whole, which is equivalent to a rod at this time. In the second state, the braking block 524a is separated from the rotating disk 523, the first ejector pin 521 and the second ejector pin 522 can rotate relative to the rotating disk 523, and the rotating rod 524b extends into the rotating hole 523a, so that the rotating disk 523 rotates around the rotating rod 524b. . This kind of structure can realize switching, and has the advantages of simple structure, fewer devices that need to be controlled, and simplicity.

The sound module may also include a magnetic rod 600 , and the magnetic rod 600 may be movably connected with the housing 100 . The turntable 523 may be provided with a limiting hole 523b, and the braking block 524a may be a magnetic block. In the first state, the magnetic rod 600 can drive the braking block 524a to move, so that at least part of the braking block 524a extends into the limiting hole 523b, and the braking block 524a limits the first ejector pin 521 and the second ejector pin 522 relative to the rotating disk. 523 rotates, and the braking block 524a separates from the magnetic rod 600 under the action of the turntable 523 moving along the vibration direction of the second diaphragm 300. That is, when the turntable 523 moves along the vibration direction of the second diaphragm 300, the magnetic rod 600 is not in the second diaphragm 300. When the vibration direction of the second diaphragm 300 moves, the magnetic connection between the braking block 524a and the magnetic rod 600 will be separated, and the magnetic rod 600 will be retracted at this time. In the second state, the magnetic rod 600 can be in a relative position to the braking block 524a, the magnetic rod 600 can attract the braking block 524a, and drive the braking block 524a to separate from the turntable 523. The cooperation between the brake block 524a and the turntable 523 is achieved through the magnetic coupling between the magnetic rod 600 and the brake block 524a, making the control relatively easier.

In other embodiments, it is not necessary to use the magnetic rod 600 to cooperate with the brake block 524a. The brake block 524a can also be connected to the brake block 524a through a linear motor, a pneumatic driver, a hydraulic driver, etc., to control the brake block 524a and the limit. Hole 523b fits.

Specifically, the first ejector pin 521 may have a first through hole near the connection point between the first ejector pin 521 and the turntable 523, and the second ejector pin 522 may have a second through hole near the connection point between the second ejector pin 522 and the turntable 523, The turntable 523 has two limiting holes 523b, and there are two magnetic rods 600 and two braking blocks 524a. In the first state, the first through hole and the second through hole are respectively opposite to the corresponding limiting holes 523b, and the magnetic rod 600 drives the braking block 524a to be respectively penetrated through the first through hole and the corresponding limiting hole 523b, and through In the second through hole and the corresponding limiting hole 523b, the first ejector pin 521 and the second ejector pin 522 are restricted from rotating relative to the rotating disk 523.

Optionally, the sound module can also include a magnetic rod 600. The magnetic rod 600 can include a rod body and a first electromagnetic coil. The rod body is movably connected to the housing 100. The turntable 523 can have a limited hole 523b, and the brake block 524a can for the magnetic block. In the first state, and when the first electromagnetic coil is supplied with current in the first direction and the first electromagnetic coil attracts the braking block 524a to drive the braking block 524a to move to a position opposite to the limiting hole 523b, the An electromagnetic coil can pass a current in the second direction, so that the braking block 524a enters the limiting hole 523b under the repulsive force between the braking block 524a and the first electromagnetic coil. In the second state, the first electromagnetic coil is supplied with current in the first direction and faces the braking block 524a to suck the braking block 524a out of the limiting hole 523b.

By arranging the magnetic rod 600 as the rod body and the first electromagnetic coil, when the first electromagnetic coil is supplied with current in the first direction, the first electromagnetic coil and the braking block 524a are attracted to each other under the action of magnetic force. When the current in the second direction is passed through the coil, the first electromagnetic coil and the braking block 524a are repelled under the action of magnetic force, so that the braking block 524a can be installed to the limit position only by controlling the direction of the current in the first electromagnetic coil. hole 523b, or taken out from the limiting hole 523b.

In some embodiments, both the second end of the first ejector pin 521 and the second end of the second ejector pin 522 may have a first limiting surface, and the braking block 524a may have a second limiting surface. In the first state, the first limiting surface and the second limiting surface can be in limiting contact to limit the first ejector pin 521 and the second ejector pin 522 from contacting each other. Rotate the turntable 523. In the second state, the first limiting surface and the second limiting surface are separated. Specifically, the first limiting surface and the second limiting surface may be flat surfaces. When the first limiting surface and the second limiting surface fit together, the first and second ejector pins 521 and 522 will be restricted from rotating relative to the turntable 523 . Since the structural processing of the first limiting surface and the second limiting surface is relatively easy, the process complexity can be reduced.

In a specific embodiment, the driving mechanism 400 may also include a second electromagnetic coil 420 and a first magnet 430. Both the second electromagnetic coil 420 and the first magnet 430 may be disposed on the housing 100. The second electromagnetic coil 420 may be connected to the driving mechanism. The first end of the driving member 410 is connected and used to magnetize the driving member 410. The first magnet 430 may be opposite to the second end of the driving member 410. The second end of the driving member 410 changes with the direction of the current of the second electromagnetic coil 420. The second end of the first magnet 430 is magnetically engaged to drive the driving member 410 to move, thereby realizing the movement of the driving member 410 . Specifically, the driving member 410 is an elastic member, the first end of the driving member 410 can be a fixed end, the second end of the driving member 410 can be a free end, and the driving member 410 can be soft iron.

Of course, the driving mechanism 400 may also be a mechanism including a driving member 410 and a driving motor. The first end of the driving member 410 may be a fixed end, the second end of the driving member 410 may be a free end, and the driving motor may drive the driving member 410. Second end movement.

The first diaphragm 200, the second diaphragm 300 and the housing 100 can enclose an inner cavity 700. The first diaphragm 200 and the second diaphragm 300 can be respectively disposed on opposite sides of the housing 100. The driving mechanism 400 It can be provided in the accommodation cavity 700 . The first diaphragm 200 , the second diaphragm 300 and the housing 100 define an inner cavity 700 , so that other components of the sound-generating module such as the driving mechanism 400 can be placed in the inner cavity 700 , so that they can be aligned with the inner cavity 700 . 700 components for protection.

This application also discloses an electronic device. The disclosed electronic device includes the sound-generating module disclosed in the above embodiment.

The electronic device may further include a first cover 800 and a second cover 900. The two covers 900 can surround a first cavity, and the sound-generating component can be disposed in the first inner cavity. The first diaphragm 200 and the second diaphragm 300 can be connected with the first cover 800 and the second cover 900 respectively. The sound holes are opposite to achieve sound emission.

The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not inconsistent, they can be combined to form a better embodiment. Taking into account the simplicity of the writing, here are the No longer.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of the present invention, many forms can be made without departing from the spirit of the present invention and the scope protected by the claims, all of which fall within the protection of the present invention.

Claims

A sound-generating module includes a housing (100), a first diaphragm (200), a second diaphragm (300) and a driving mechanism (400). The membrane (300) and the driving mechanism (400) are both provided in the housing (100), and the first diaphragm (200) and the second diaphragm (300) are respectively provided in the sound-generating module. On opposite sides, the driving mechanism (400) is connected to the first diaphragm (200) and the second diaphragm (300) respectively, and the driving mechanism (400) is used to drive the first diaphragm (300). The diaphragm (200) and the second diaphragm (300) vibrate synchronously.
The sound-generating module according to claim 1, wherein the driving mechanism (400) drives the first diaphragm (200) and the second diaphragm (300) to vibrate synchronously, so that the sound-generating module is in first state or second state;

In the first state, the first sound emitted by the vibration of the first diaphragm (200) and the second sound emitted by the vibration of the second diaphragm (300) have the same phase;

In the second state, the first sound emitted by the vibration of the first diaphragm (200) and the second sound emitted by the vibration of the second diaphragm (300) have opposite phases.
The sound-generating module according to claim 1, wherein the sound-generating module further includes a transmission mechanism (500), the transmission mechanism (500) is located between the first diaphragm (200) and the second diaphragm (200). 300), the transmission mechanism (500) includes a first ejector pin assembly (510) and a second ejector pin assembly (520), the driving mechanism (400) includes a driving member (410), and the driving member (410) The first side wall of the driving member (410) is connected to the first diaphragm (200) through the first ejector pin assembly (510), and the second side wall of the driving member (410) is connected to the first ejector pin assembly (520) through the second ejector pin assembly (520). The second diaphragm (300) is connected, and the first side wall and the second side wall are arranged oppositely; the driving member (410) passes through the first ejector assembly (510) and the second The ejector assembly (520) drives the first diaphragm (200) and the second diaphragm (300) to vibrate respectively.
The sound-generating module according to claim 3, wherein the second ejector pin assembly (520) includes a first ejector pin (521), a second ejector pin (522), a turntable (523) and a limiting component (524). The first end of the first ejector pin (521) is connected to the second diaphragm (300), the second end of the first ejector pin (521) is rotationally connected to the turntable (523), and the second ejector pin (521) is rotatably connected to the turntable (523). The first end of 522) is connected to the second side wall of the driving member (410), the second end of the second ejector pin (522) is rotationally connected to the turntable (523), and the first ejector pin (522) is rotatably connected to the turntable (523). The second end of 521) and the second end of the second ejector pin (522) are respectively connected to both sides of the center of the turntable (523), and the limiting component (524) is movably provided on the housing. (100);

In the first state, the limiting component (524) limits the rotation of the turntable (523), and the driving member (410) moves to drive the first ejector pin (521), the turntable (523) and the The second ejector pin (522) moves together along the vibration direction of the second diaphragm (300), so that the first diaphragm (200) and the second diaphragm (300) vibrate in the same direction;

In the second state, the limiting component (524) is limitedly matched with the turntable (523) so that the turntable (523) rotates around its center, and the first ejector pin (521) and the third The movement directions of the two ejector pins (522) are opposite to the vibration direction of the second diaphragm (300), so that the first diaphragm (200) and the second diaphragm (300) vibrate in opposite directions.
The sound module according to claim 4, wherein the limiting component (524) includes a braking block (524a) and a rotating rod (524b), and the rotating rod (524b) and the braking block (524b) 524a) are all movably connected to the housing (100), and a rotation hole (523a) is provided in the center of the turntable (523);

In the first state, the rotating rod (524b) is separated from the turntable (523), the brake block (524a) is connected to the turntable (523), and the brake block (524a ) restricts the first ejector pin (521) and the second ejector pin (522) from rotating relative to the turntable to limit the rotation. The disk (523) rotates;

In the second state, the braking block (524a) is separated from the turntable (523), and the rotation rod (524b) extends into the rotation hole (523a), so that the turntable (523 ) rotates around the rotating rod (524b).
The sound-generating module according to claim 5, wherein the sound-generating module further includes a magnetic rod (600), the magnetic rod (600) is movably connected with the housing (100), and the turntable (523) has an opening There is a limited positioning hole (523b), and the braking block (524a) is a magnetic block;

In the first state, the magnetic rod (600) drives the braking block (524a) to move, so that at least part of the braking block (524a) extends into the limiting hole (523b). , the brake block (524a) restricts the first ejector pin (521) and the second ejector pin (522) from rotating relative to the turntable (523), and the brake block (524a) is in the turntable (523). ) is separated from the magnetic rod (600) by moving along the vibration direction of the second diaphragm (300);

In the second state, the magnetic rod (600) attracts the brake block (524a) and drives the brake block (524a) to separate from the turntable (523).
The sound-generating module according to claim 5, wherein the sound-generating module further includes a magnetic rod (600), the magnetic rod (600) includes a rod body and a first electromagnetic coil, the rod body and the housing (100) Movably connected, the turntable (523) is provided with a limited hole (523b), and the braking block (524a) is a magnetic block;

In the first state, and the current in the first direction is passed through the first electromagnetic coil, the first electromagnetic coil attracts the brake block (524a) to drive the brake block (524a). ) moves to a position opposite to the limiting hole (523b), the first electromagnetic coil passes a current in the second direction, so that the braking block (524a) It enters the limiting hole (523b) under the action of the repulsive force between the first electromagnetic coil and the first electromagnetic coil;

In the second state, the first electromagnetic coil passes the current in the first direction and is opposite to the braking block (524a) to move the braking block (524a) from the limit. Suck it out from the bit hole (523b).
The sound module according to claim 5, wherein the second end of the first ejector pin (521) and the second end of the second ejector pin (522) each have a first limiting surface, and the braking block (524a) has a second limiting surface;

In the first state, the first limiting surface is in limiting contact with the second limiting surface to limit the first ejector pin (521) and the second ejector pin (522) relative to the turntable. (523)Rotation;

In the second state, the first limiting surface is separated from the second limiting surface.
The sound-generating module according to claim 5, wherein the driving mechanism (400) further includes a second electromagnetic coil (420) and a first magnet (430), the second electromagnetic coil (420) and the first magnet (430). Magnets (430) are provided in the housing (100), and the second electromagnetic coil (420) cooperates with the first end of the driving member (410) and is used to magnetize the driving member (410). The first magnet (430) is disposed opposite to the second end of the driving member (410). The second end of the driving member (410) changes with the current direction of the second electromagnetic coil (420). The second end of the first magnet (430) is magnetically engaged to drive the driving member (410) to move.
The sound-generating module according to claim 1, wherein the first diaphragm (200), the second diaphragm (300) and the housing (100) form an accommodation cavity (700), and the The first diaphragm (200) and the second diaphragm (300) are respectively provided on opposite sides of the housing (100), and the driving mechanism (400) is provided in the accommodation cavity (700) .
An electronic device including the sound module according to any one of claims 1 to 10.