Sound module and electronic device

Abstract

The present invention discloses a sound generating module and an electronic device. The disclosed sound generating module 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 disposed in the housing. The first diaphragm and the second diaphragm are respectively arranged on two opposite sides of the sound generating module. The driving mechanism is respectively connected to the first diaphragm and the second diaphragm, and the driving mechanism is used to drive the first diaphragm and the second diaphragm to vibrate synchronously.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic devices, and particularly to a sound generating module and an electronic device. Background Art

[0002] The sound generating module in an electronic device plays a role in transmitting call information. When the electronic device is working, part of the sound is transmitted to the human ear, and part of the sound will spread to the external space. In the case of communication of the electronic device, sometimes it is necessary to minimize the sound leakage in order to protect the communication content, and sometimes it is necessary to increase the sound.

[0003] Due to the increasing extreme requirements of the electronic device for a full-screen, the sound outlet holes of the sound generating module are getting closer and closer to the end of the electronic device, and the gap is getting narrower and narrower, and the coupling sealing performance between the gap and the human ear is getting worse. Due to the diffraction effect of sound, more and more sound will leak to the outside, resulting in poor privacy during communication. In the related art, in order to reduce the sound leakage, holes are usually opened in the rear cavity of the sound generating module, and the sound with opposite phases in the front cavity and the rear cavity at low frequencies cancels each other out in the distance, thereby reducing the sound leakage. However, since the same sound source is used, that is, the same diaphragm is shared, the sound radiated by the sound generating module to the rear cavity cannot be adjusted, which is not conducive to the switching between reducing the sound leakage and increasing the sound of the sound generating module. Summary of the Invention

[0004] The present invention discloses a sound generating module and an electronic device to solve the problem that it is not conducive to switching when the sound generating module switches between reducing sound leakage and increasing sound because the same sound source is used.

[0005] In order to solve the above technical problems, the present invention is implemented as follows:

[0006] In a first aspect, the present application discloses a sound generating module, including 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 in the housing. The first diaphragm and the second diaphragm are arranged on opposite sides of the sound generating module. The driving mechanism is respectively connected to the first diaphragm and the second diaphragm, and the driving mechanism is used to drive the first diaphragm and the second diaphragm to vibrate synchronously.

[0007] In a second aspect, the present application also discloses an electronic device, including the sound generating module described in the first aspect.

[0008] The technical solution adopted by the present invention can achieve the following technical effects:

[0009] The sound generating module disclosed in the embodiments of the present application is provided with 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, so that there are multiple sound sources compared with the related art in which a single diaphragm vibrates to generate sound, so that the sound generating module can better control the superposition or cancellation of the emitted sound, so that it is convenient for the sound generating module to switch between reducing sound leakage and improving sound quality. Description of the Drawings

[0010] Figure 1 It is a perspective structural schematic diagram of the sound generating module disclosed in the embodiments of the present invention in the second state;

[0011] Figure 2 It is a perspective structural schematic diagram of the sound generating module disclosed in the embodiments of the present invention in the first state;

[0012] Figure 3 It is a structural schematic diagram of the sound generating module disclosed in the embodiments of the present invention in the first state;

[0013] Figure 4 It is an exploded schematic diagram of the sound generating module disclosed in the embodiments of the present invention;

[0014] Figure 5 It is a structural schematic diagram of the transmission mechanism disclosed in the embodiments of the present invention;

[0015] Figure 6 is Figure 5 exploded schematic diagram;

[0016] Figure 7 It is a cross-sectional view of the sound generating module disclosed in the embodiments of the present invention;

[0017] Figure 8 It is a structural schematic diagram of an electronic device.

[0018] Description of the Reference Numerals:

[0019] 100 - housing,

[0020] 200 - first diaphragm,

[0021] 300 - second diaphragm,

[0022] 400 - driving mechanism, 410 - driving member, 420 - second electromagnetic coil, 430 - first magnet,

[0023] 500 - transmission mechanism, 510 - first thimble assembly, 520 - second thimble assembly, 521 - first thimble, 522 - second thimble, 523 - turntable, 523a - rotation hole, 523b - limiting hole, 524 - limiting assembly, 524a - braking block, 524b - rotating rod, 530 - pin shaft,

[0024] 600 - Magnetic rod, 700 - Accommodating inner cavity, 800 - First cover, 900 - Second cover. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than 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 making creative efforts fall within the scope of protection of the present invention.

[0026] The following will, with reference to the drawings, detail the technical solutions disclosed in each embodiment of the present invention.

[0027] Please refer to Figures 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.

[0028] The first diaphragm 200, the second diaphragm 300, and the driving mechanism 400 are all disposed in the housing 100. The first diaphragm 200 and the second diaphragm 300 are components that generate sound by vibration.

[0029] The first diaphragm 200 and the second diaphragm 300 are arranged at intervals. The first diaphragm 200 and the second diaphragm 300 are respectively disposed on opposite sides of the sound - generating module. The driving mechanism 400 can be disposed between the first diaphragm 200 and the second diaphragm 300.

[0030] The driving mechanism 400 is respectively connected to the first diaphragm 200 and the second diaphragm 300. 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. The first diaphragm 200 emits a first sound, and the second diaphragm 300 emits a second sound. By controlling the vibration of the first diaphragm 200 and the second diaphragm 300, the first sound and the second sound can be made to overlap with each other to increase or decrease the sound emitted by the sound - generating module, thereby increasing the sound emitted by the sound - generating module or decreasing the sound emitted by the sound - generating module. After decreasing the sound emitted by the sound - generating module, sound leakage can be reduced.

[0031] The sound module disclosed in the embodiments of the present application is provided with two diaphragms, namely a first diaphragm 200 and a second diaphragm 300, so that the driving mechanism 400 can drive the first diaphragm 200 and the second diaphragm 300 to vibrate synchronously. Therefore, compared with the related art where a single diaphragm vibrates to generate sound, there are multiple sound sources, which can better control the sound module to superimpose or cancel the emitted sounds, and thus facilitate the switching of the sound module between reducing sound leakage and improving sound quality.

[0032] 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 module is in a first state or a second state.

[0033] In the second state, the phases of 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 the same. The first sound and the second sound are superimposed at the intersection to increase the sound, so that the sound emitted by the sound module is increased, and thus it can be applied to the external speaker of the electronic device. In the first state, the phases of 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 opposite. The first sound and the second sound are superimposed at the intersection to reduce the sound, so that it can be applied to the scenario of preventing sound leakage in the call mode of the electronic device.

[0034] The sound module disclosed in the embodiments of the present application is provided with two diaphragms, namely a first diaphragm 200 and a second diaphragm 300, so that the driving mechanism 400 can drive the first diaphragm 200 and the second diaphragm 300 to vibrate synchronously. When the phases of 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 the same, the first sound and the second sound can be superimposed outside the sound module to increase the sound emitted by the sound module. When the phases of 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 opposite, the first sound and the second sound are superimposed outside the sound module to reduce the sound transmitted by the sound module, thus effectively solving the problem that the sound module only includes one diaphragm and cannot well realize the switching between increasing the sound of the sound module and reducing the sound leakage of the sound module.

[0035] 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 a first sound and a second sound with opposite phases. When the first diaphragm 200 and the second diaphragm 300 move in the opposite direction, the first diaphragm 200 and the second diaphragm 300 can respectively emit a first sound and a second sound with the same phase. The driving mechanism can be multiple linear driving motors or an electromagnetic driving component, etc. There is no specific limitation on the driving mechanism here.

[0036] The sound generating module may further include a transmission mechanism 500. The transmission mechanism 500 may be located between the first diaphragm 200 and the second diaphragm 300. The transmission mechanism 500 may include a first thimble assembly 510 and a second thimble 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 thimble assembly 510, and the second side wall of the driving member 410 may be connected to the second diaphragm 300 through the second thimble assembly 520. The first side wall and the second side wall are arranged in opposite directions. The driving member 410 drives the first diaphragm 200 and the second diaphragm 300 to vibrate through the first thimble assembly 510 and the second thimble assembly 520 respectively.

[0037] By setting the transmission mechanism 500 to include the first thimble assembly 510 and the second thimble assembly 520, and the driving mechanism 400 includes the driving member 410, the first side wall of the driving member 410 is connected to the first diaphragm 200 through the first thimble assembly 510, and the second side wall of the driving member 410 is connected to the second diaphragm 300 through the second thimble assembly 520. The first side wall and the second side wall are arranged in opposite directions. Therefore, when the driving member 410 moves, the driving member 410 can drive the first diaphragm 200 and the second diaphragm 300 to vibrate simultaneously, so that the linkage between the first diaphragm 200 and the second diaphragm 300 is better.

[0038] In the first state, the driving member 410 may drive the first diaphragm 200 and the second diaphragm 300 to vibrate in the same direction through the first thimble assembly 510 and the second thimble assembly 520 respectively, so that the first diaphragm 200 and the second diaphragm 300 emit first sound and second sound with opposite phases respectively. In the second state, the driving member 410 may drive the first diaphragm 200 and the second diaphragm 300 to vibrate in the opposite direction through the first thimble assembly 510 and the second thimble assembly 520 respectively, so that the first diaphragm 200 and the second diaphragm 300 can emit first sound and second sound with the same phase respectively.

[0039] Specifically, the second thimble assembly 520 may include a first thimble 521, a second thimble 522, a turntable 523, and a limit assembly 524. The first end of the first thimble 521 may be connected to the second diaphragm 300, the second end of the first thimble 521 may be rotatably connected to the turntable 523, the first end of the second thimble 522 is connected to the second side wall of the driving member 410, the second end of the second thimble 522 may be rotatably connected to the turntable 523, and the second ends of the first thimble 521 and the second thimble 522 may be respectively connected to both sides of the center of the turntable 523. The limit assembly 524 may be movably disposed in the housing 100. Both the first thimble 521 and the second thimble 522 may be rotatably connected to the turntable 523 through a pin shaft 530. Specifically, the second ends of the first thimble 521 and the second thimble 522 may be respectively connected to both sides of the turntable 523 that are symmetric with respect to the center of the turntable 523.

[0040] In the first state, the limit assembly 524 may limit the rotation of the turntable 523, so that the first thimble 521, the second thimble 522, and the turntable 523 form a fixed-connected integral structure, that is, equivalent to a rod. The driving member 410 moves to drive the first thimble 521, the turntable 523, and the second thimble 522 to move together along the vibration direction of the second diaphragm 300. The first thimble assembly 510 and the second thimble 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 limit assembly 524 is in limit cooperation with the turntable 523 to enable the turntable 523 to rotate around its center. The movement directions of the first thimble 521 and the second thimble 522 are opposite. The driving member 410 moves to drive the first thimble assembly 510 and the second thimble 522 to move in the same direction, that is, the vibration directions of the first thimble assembly 510 driving the first diaphragm 200 and the first thimble 521 driving the second diaphragm 300 are opposite, so that the first diaphragm 200 and the second diaphragm 300 vibrate in the opposite direction.

[0041] By setting the second thimble assembly 520 as the first thimble 521, the second thimble 522, the turntable 523, and the limit assembly 524, the first end of the first thimble 521 can be connected to the second diaphragm 300, the second end of the first thimble 521 can be rotatably connected to the turntable 523, the first end of the second thimble 522 is connected to the second side wall of the driving member 410, the second end of the second thimble 522 can be rotatably connected to the turntable 523, and the second ends of the first thimble 521 and the second thimble 522 can be respectively connected to both sides of the center of the turntable 523. Thus, by controlling the cooperation between the limit assembly 524 and the turntable 523, the rotation of the turntable 523 can be restricted or the turntable 523 can be made to rotate around its center, and further, by controlling the turntable 523 in different states, the switching of the sound generating module in different states can be realized.

[0042] Specifically, the limiting component 524 can be a prismatic rod. An installation hole adapted to the prismatic rod can be opened at the center of the turntable 523, and one end of the prismatic rod can be installed in the installation 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 rotates through the drive of the driving member, so that the prismatic rod drives the turntable 523 to rotate together.

[0043] In another embodiment, the limiting component 524 can include a brake block 524a and a rotating rod 524b. Both the rotating rod 524b and the brake block 524a can be movably connected to the housing 100. A rotating hole 523a can be opened at the center of the turntable 523. In the first state, the rotating rod 524b is separated from the turntable 523, and the brake block 524a can be connected to the turntable 523, and the brake block 524a restricts the relative rotation of the first thimble 521 and the second thimble 522 with respect to the turntable, so as to restrict the rotation of the turntable 523, so that the first thimble 521 and the second thimble 522 form an integral body that cannot rotate relatively with the turntable 523. At this time, it is equivalent to a rod. In the second state, the brake block 524a is separated from the turntable 523, and the first thimble 521 and the second thimble 522 can rotate relative to the turntable 523, and the rotating rod 524b extends into the rotating hole 523a, so that the turntable 523 rotates around the rotating rod 524b. This structure can achieve switching, and has the advantages of simple structure, fewer devices to be controlled, and being relatively simple.

[0044] The sound generating module can further include a magnetic rod 600, and the magnetic rod 600 can be movably connected to the housing 100. The turntable 523 can be provided with a limiting hole 523b, and the brake block 524a can be a magnetic block. In the first state, the magnetic rod 600 can drive the brake block 524a to move, so that at least part of the brake block 524a extends into the limiting hole 523b. The brake block 524a restricts the relative rotation of the first thimble 521 and the second thimble 522 with respect to the turntable 523. The brake block 524a is separated from the magnetic rod 600 under the action of the movement of the turntable 523 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, since the magnetic rod 600 does not move in the vibration direction of the second diaphragm 300, the magnetic connection between the brake block 524a and the magnetic rod 600 will be disengaged, and at this time the magnetic rod 600 is retracted. In the second state, the magnetic rod 600 can be in a relative position with the brake block 524a, the magnetic rod 600 can attract the brake block 524a, and drive the brake block 524a to be separated from the turntable 523. By means of the magnetic attraction cooperation between the magnetic rod 600 and the brake block 524a, the cooperation between the brake block 524a and the turntable 523 is realized, making the control relatively easier.

[0045] In other embodiments, it is not necessarily required to cooperate the magnetic rod 600 with the brake block 524a. Instead, a linear motor, a pneumatic driving member, a hydraulic driving member, etc. can be connected to the brake block 524a to control the cooperation between the brake block 524a and the limiting hole 523b.

[0046] Specifically, the position of the first ejector pin 521 near the connection between the first ejector pin 521 and the turntable 523 may have a first through hole, and the position of the second ejector pin 522 near the connection between the second ejector pin 522 and the turntable 523 may have a second through hole. The turntable 523 has two limiting holes 523b, and both the magnetic rod 600 and the brake block 524a are two. 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 brake block 524a to respectively pass through the first through hole and the corresponding limiting hole 523b, and pass through the second through hole and the corresponding limiting hole 523b, so as to limit the relative rotation of the first ejector pin 521 and the second ejector pin 522 with respect to the turntable 523.

[0047] Optionally, the sound generating module may further include a magnetic rod 600. The magnetic rod 600 may include a rod body and a first electromagnetic coil. The rod body is movably connected to the housing 100. The turntable 523 may be provided with a limiting hole 523b, and the brake block 524a may be a magnetic block. In the first state, when a current in a first direction is passed through the first electromagnetic coil, the first electromagnetic coil attracts the brake block 524a to drive the brake block 524a to move to a position opposite to the limiting hole 523b, a current in a second direction may be passed through the first electromagnetic coil, so that the brake block 524a enters the limiting hole 523b under the repulsive force between the brake block 524a and the first electromagnetic coil. In the second state, a current in a first direction is passed through the first electromagnetic coil and is opposite to the brake block 524a to suck the brake block 524a out of the limiting hole 523b.

[0048] By setting the magnetic rod 600 as a rod body and a first electromagnetic coil, when a current in a first direction is passed through the first electromagnetic coil, the first electromagnetic coil and the brake block 524a attract each other under the action of magnetic force. When a current in a second direction is passed through the first electromagnetic coil, the first electromagnetic coil and the brake block 524a repel each other under the action of magnetic force. Thus, it is possible to install the brake block 524a into the limiting hole 523b or take out the brake block 524a from the limiting hole 523b only by controlling the direction of the current of the first electromagnetic coil.

[0049] In some embodiments, the second ends of the first thimble 521 and the second thimble 522 may both have a first limiting surface, and the brake block 524a may have a second limiting surface. In the first state, the first limiting surface and the second limiting surface may be in limiting contact to restrict the relative rotation of the first thimble 521 and the second thimble 522 with respect to 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, and when the first limiting surface and the second limiting surface are in contact, the relative rotation of the first thimble 521 and the second thimble 522 with respect to the turntable 523 will be restricted. Since the structures of the first limiting surface and the second limiting surface are relatively easy to process, the process complexity can be reduced.

[0050] In a specific embodiment, the driving mechanism 400 may further include a second electromagnetic coil 420 and a first magnet 430. The second electromagnetic coil 420 and the first magnet 430 may both be disposed in the housing 100. The second electromagnetic coil 420 may be connected to the first end of the driving member 410 and is 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 is magnetically attracted and cooperated with the second end of the first magnet 430 according to the change of the current direction of the second electromagnetic coil 420 to drive the driving member 410 to move, so as to realize the movement of the driving member 410. Specifically, the driving member 410 is an elastic member, 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 member 410 may be soft iron.

[0051] 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 second end of the driving member 410 to move.

[0052] The first diaphragm 200, the second diaphragm 300 and the housing 100 may enclose an accommodation cavity 700. The first diaphragm 200 and the second diaphragm 300 may be respectively disposed on two opposite sides of the housing 100, and the driving mechanism 400 may be disposed in the accommodation cavity 700. By enclosing the accommodation cavity 700 with the first diaphragm 200, the second diaphragm 300 and the housing 100, other components of the sound generating module such as the driving mechanism 400 can be disposed in the accommodation cavity 700, so as to protect the components located in the accommodation cavity 700.

[0053] The present application also discloses an electronic device, and the disclosed electronic device includes the sound generating module disclosed in the above embodiments.

[0054] The electronic device may further include a first cover body 800 and a second cover body 900. The first cover body 800 and the second cover body 900 may enclose a first cavity. The sound generating component may be disposed in the first cavity. The first diaphragm 200 and the second diaphragm 300 may be opposite to the sound outlet holes on the first cover body 800 and the second cover body 900 respectively, so as to realize sound output.

[0055] In the above embodiments of the present invention, the differences between the various embodiments are mainly described. As long as the different optimized features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. For the sake of brevity of the description, they will not be elaborated herein.

[0056] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims, and all of them fall within the protection scope of the present invention.

Claims

1. A sound generating module, characterized in that, It includes a housing (100), a first diaphragm (200), a second diaphragm (300), a driving mechanism (400) and a transmission mechanism (500). The first diaphragm (200), the second diaphragm (300) and the driving mechanism (400) are all arranged in the housing (100). The first diaphragm (200) and the second diaphragm (300) are respectively arranged on two opposite sides of the sound generating module. The driving mechanism (400) is respectively connected to the first diaphragm (200) and the second diaphragm (300). The transmission mechanism (500) is located between the first diaphragm (200) and the second diaphragm (300). The transmission mechanism (500) includes a first thimble assembly (510) and a second thimble assembly (520). The driving mechanism (400) includes a driving member (410). The first side wall of the driving member (410) is connected to the first diaphragm (200) through the first thimble assembly (510). The second side wall of the driving member (410) is connected to the second diaphragm (300) through the second thimble assembly (520). The first side wall and the second side wall are arranged in opposite directions. The driving member (410) drives the first diaphragm (200) and the second diaphragm (300) to vibrate synchronously through the first thimble assembly (510) and the second thimble assembly (520), so that the sound generating module is in a first state or a second state. In the first state, the phase of the first sound generated by the vibration of the first diaphragm (200) is opposite to the phase of the second sound generated by the vibration of the second diaphragm (300). In the second state, the phase of the first sound generated by the vibration of the first diaphragm (200) is the same as the phase of the second sound generated by the vibration of the second diaphragm (300).

2. The sound generating module according to claim 1, wherein The second thimble assembly (520) includes a first thimble (521), a second thimble (522), a turntable (523) and a limiting assembly (524). The first end of the first thimble (521) is connected to the second diaphragm (300). The second end of the first thimble (521) is rotatably connected to the turntable (523). The first end of the second thimble (522) is connected to the second side wall of the driving member (410). The second end of the second thimble (522) is rotatably connected to the turntable (523). And the second ends of the first thimble (521) and the second thimble (522) are respectively connected to two sides of the center of the turntable (523). The limiting assembly (524) is movably arranged in the housing (100). In the first state, the limiting assembly (524) restricts the rotation of the turntable (523). The driving member (410) moves to drive the first thimble (521), the turntable (523) and the second thimble (522) to move 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 in limiting cooperation with the turntable (523) to enable the turntable (523) to rotate around its center. The moving directions of the first ejector pin (521) and the second ejector pin (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.

3. The sound generating module according to claim 2, wherein, The limiting component (524) includes a brake block (524a) and a rotating rod member (524b). Both the rotating rod member (524b) and the brake block (524a) are movably connected to the housing (100). A rotating hole (523a) is provided at the center of the turntable (523). In the first state, the rotating rod member (524b) is separated from the turntable (523), and the brake block (524a) is connected to the turntable (523). The brake block (524a) restricts the relative rotation of the first ejector pin (521) and the second ejector pin (522) with respect to the turntable to restrict the rotation of the turntable (523). In the second state, the brake block (524a) is separated from the turntable (523), and the rotating rod member (524b) extends into the rotating hole (523a) to enable the turntable (523) to rotate around the rotating rod member (524b).

4. The sound generating module according to claim 3, wherein, The sound generating module further includes a magnetic rod (600). The magnetic rod (600) is movably connected to the housing (100). A limiting hole (523b) is provided on the turntable (523), and the brake block (524a) is a magnetic block. In the first state, the magnetic rod (600) drives the brake block (524a) to move so that at least a part of the brake block (524a) extends into the limiting hole (523b). The brake block (524a) restricts the relative rotation of the first ejector pin (521) and the second ejector pin (522) with respect to the turntable (523). The brake block (524a) is separated from the magnetic rod (600) under the action of the movement of the turntable (523) 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 be separated from the turntable (523).

5. The sound generating module according to claim 3, 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 is movably connected to the housing (100). A limiting hole (523b) is provided on the turntable (523), and the brake block (524a) is a magnetic block. In the first state, when a current in a first direction is applied to the first electromagnetic coil and the first electromagnetic coil attracts the brake block (524a) to drive the brake block (524a) to move to a position opposite to the limiting hole (523b), a current in a second direction is applied to the first electromagnetic coil, so that the brake block (524a) enters the limiting hole (523b) under the repulsive force between the brake block (524a) and the first electromagnetic coil; In the second state, a current in the first direction is applied to the first electromagnetic coil, and the first electromagnetic coil is opposite to the brake block (524a) to suck the brake block (524a) out of the limiting hole (523b).

6. The sound generating module according to claim 3, wherein The second ends of the first ejector pin (521) and the second ejector pin (522) both have a first limiting surface, and the brake 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 relative rotation of the first ejector pin (521) and the second ejector pin (522) with respect to the turntable (523); In the second state, the first limiting surface is separated from the second limiting surface.

7. The sound generating module according to claim 3, 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) are both disposed in the housing (100). 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) is magnetically attracted and cooperated with the second end of the first magnet (430) according to the change of the current direction of the second electromagnetic coil (420) to drive the driving member (410) to move.

8. The sound generating module according to claim 1, wherein The first diaphragm (200), the second diaphragm (300) and the housing (100) enclose an accommodation cavity (700). The first diaphragm (200) and the second diaphragm (300) are respectively disposed on two opposite sides of the housing (100), and the driving mechanism (400) is disposed in the accommodation cavity (700).

9. An electronic device, characterized in that, Including the sound generating module according to any one of claims 1 to 8.

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