Speaker and electronic device

Abstract

The application provides a loudspeaker and an electronic device. The loudspeaker comprises a basket, a magnetic circuit assembly, a first diaphragm and a first voice coil. The magnetic circuit assembly is fixedly connected to the basket, and has a first magnetic gap. The first diaphragm is fixedly connected to the basket. One end of the first voice coil is fixedly connected to the first diaphragm, and the other end of the first voice coil is located in the first magnetic gap. At least part of the magnetic circuit assembly, the first diaphragm and part of the basket jointly enclose a first cavity. The basket is provided with a first through hole and a second through hole. The first through hole and the second through hole both communicate the first cavity and the outside of the loudspeaker, and the first through hole and the second through hole are symmetrical about a central axis of the loudspeaker. The first diaphragm of the loudspeaker is not prone to polarization. The loudspeaker and the electronic device have better sound quality.

Description

Technical Field

[0001] This application relates to the field of audio technology, and more particularly to a loudspeaker and electronic device. Background Technology

[0002] Miniature loudspeakers are devices widely used in electronic devices such as headphones, mobile phones, tablets, and laptops. They convert electrical energy into sound energy and mainly consist of a magnetic circuit system and a vibration system. The vibration system includes a diaphragm and a voice coil. When energized, the voice coil interacts with a magnetic field, causing the diaphragm to vibrate, thus producing sound.

[0003] As a key component of the vibration system of a miniature loudspeaker, diaphragm polarization can easily lead to voice coil rubbing and noise, and prolonged use can cause localized deformation of the diaphragm. Furthermore, diaphragm polarization can increase loudspeaker distortion, affecting the sound quality of the entire loudspeaker system. Summary of the Invention

[0004] This application provides a loudspeaker and an electronic device. The first diaphragm of the loudspeaker is less prone to polarization. The loudspeaker and electronic device have better sound quality.

[0005] In a first aspect, embodiments of this application provide a loudspeaker. The loudspeaker includes a frame, a magnetic circuit assembly, a first diaphragm, and a first voice coil. The magnetic circuit assembly is fixedly connected to the frame and has a first magnetic gap. The first diaphragm is fixedly connected to the frame. One end of the first voice coil is fixedly connected to the first diaphragm, and the other end of the first voice coil is located in the first magnetic gap. At least a portion of the magnetic circuit assembly, the first diaphragm, and a portion of the frame together enclose a first chamber. The frame has a first through hole and a second through hole, both of which communicate with the first chamber and the outside of the loudspeaker. The first through hole and the second through hole are symmetrical about the central axis of the loudspeaker.

[0006] It is understood that, in the embodiments of this application, the symmetry of the first through hole and the second through hole about the central axis of the speaker may include, but is not limited to, the symmetry of the positions of the first through hole and the second through hole about the central axis of the speaker. For example, the positions of the first through hole and the second through hole may be symmetrical about the central axis of the speaker, and the structures of the first through hole and the second through hole may also be symmetrical about the central axis of the speaker. Alternatively, the positions of the first through hole and the second through hole may be symmetrical about the central axis of the speaker, but the structures of the first through hole and the second through hole may be similar but not symmetrical about the central axis of the speaker. Furthermore, a certain degree of error is allowed in the symmetry of the first through hole and the second through hole about the central axis of the speaker. For example, the angle between the line connecting the first through hole and the second through hole about the central axis of the speaker and the axis of symmetry is not strictly 90 degrees; the angle between the line connecting the first through hole and the second through hole and the axis of symmetry may be in the range of 80 degrees to 100 degrees.

[0007] In this embodiment, the first chamber can be connected to the outside of the speaker through a first through hole and a second through hole, allowing gas inside the first chamber to flow out through the first and second through holes to balance the air pressure inside the first chamber. By symmetrically positioning the first and second through holes about the central axis of the speaker, this embodiment ensures a more even air pressure distribution inside the first chamber after the gas flows out through the first and second through holes. This prevents the first diaphragm from becoming polarized due to pressure imbalance inside the first chamber, thus minimizing its impact on the speaker's sound quality.

[0008] Furthermore, the first and second through holes can be formed by components of the speaker itself; for example, they can be formed by the lower frame, meaning the first and second through holes can be integrated into the speaker's structure. This eliminates the need for separate structural components to form the first and second through holes. The speaker's structure is simpler, and this design facilitates miniaturization.

[0009] In some embodiments, the magnetic circuit assembly includes a central magnet and a first magnetic conductor. The first magnetic conductor includes a main body and a peripheral body. The peripheral body is connected to the main body and surrounds the main body. The peripheral body has a first surface and a second surface facing away from each other. The main body protrudes from the second surface of the peripheral body. The central magnet is fixedly connected to the main body. A portion of the main body surrounds the central magnet and is spaced apart from it. The gap between the main body and the central magnet forms at least a portion of a first magnetic gap. The basin frame includes an upper basin frame and a lower basin frame. The upper basin frame is fixedly connected to the first diaphragm and the first surface of the peripheral body. The lower basin frame is fixedly connected to the second surface of the peripheral body. The central magnet, the first magnetic conductor, the first diaphragm, and the upper basin frame together enclose a first cavity. A first through hole and a second through hole are located on the lower basin frame. The first magnetic conductor has a first connecting hole and a second connecting hole. The first connecting hole connects the first through hole and the first cavity. The second connecting hole connects the second through hole and the first cavity.

[0010] In this embodiment, by providing a first connecting hole and a second connecting hole at the periphery of the first magnetic conductor, the first chamber can be connected to the first through hole of the lower frame through the first connecting hole and to the second through hole of the lower frame through the second connecting hole. This allows the first chamber to connect to the outside of the speaker, balancing the air pressure within the first chamber. Furthermore, the first and second connecting holes can be formed by components of the speaker itself; for example, the first magnetic conductor can form the first connecting hole and the second connecting hole, meaning they can be integrated into the speaker's structure. This eliminates the need for separate structural components to form the first and second connecting holes. The speaker's structure is relatively simple and facilitates miniaturization.

[0011] In some implementations, the first and second connecting holes are symmetrical about the central axis of the speaker.

[0012] In this embodiment, by setting the first connecting hole and the second connecting hole to be symmetrical about the central axis of the speaker, the gas in the first chamber flows through the first connecting hole to the first through hole and through the second connecting hole to the second through hole, so that the gas pressure distribution in the first chamber is more balanced. As a result, the first diaphragm is less likely to be polarized due to the gas pressure imbalance in the first chamber, thus affecting the sound quality of the speaker.

[0013] In some embodiments, the lower basin stand includes a first top surface, a first bottom surface, and a first outer side surface connected between the first top surface and the first bottom surface, with the first top surface and the first bottom surface facing away from each other; the first outer side surface faces away from the central magnet, and the first top surface is fixedly connected to the second surface of the peripheral portion; the opening of the first through hole is located on the first top surface and extends to the first outer side surface.

[0014] In this embodiment, a portion of the openings of the first through hole and the second through hole can be located on the first top surface, so that the first through hole and the second through hole can communicate with the first connecting hole and the second connecting hole respectively to connect the first chamber; and a portion of the openings of the first through hole and the second through hole are provided on the first outer side of the lower frame, so that the sound waves generated on the side of the first diaphragm facing the first chamber can be diffused to the outer periphery of the speaker through the first through hole and the second through hole.

[0015] It is understandable that when the first diaphragm vibrates, the sound waves generated on both sides of the first diaphragm are out of phase. For example, the sound waves generated on the side of the first diaphragm facing the first cavity are out of phase with the sound waves generated on the side of the first diaphragm facing away from the first cavity. In this embodiment, by setting a portion of the openings of the first through hole and the second through hole on the first outer side of the lower frame, the sound waves generated on the side of the first diaphragm facing the first cavity are less likely to diffuse to the top of the speaker and interfere with the sound waves generated on the side of the first diaphragm facing away from the first cavity. This helps to avoid the cancellation of sound waves with opposite phases, which would cause an acoustic short circuit and thus affect the sound quality of the speaker.

[0016] In some embodiments, the first through-hole includes a first inner wall, which is disposed opposite to the first connecting hole; along the direction of the first outer side facing the central axis of the speaker, the first inner wall is close to the periphery of the first magnetic element. In this way, the path length of gas flowing from the first through-hole to the outside of the speaker can be reduced, allowing the gas in the first through-hole to diffuse to the outside of the speaker more quickly, and the gas is less likely to accumulate in the first through-hole; and, because the path length of gas flowing from the first through-hole to the outside of the speaker is reduced, the driving force required by the speaker to push the gas in the first through-hole to diffuse out of the first through-hole is smaller, so the driving force of the speaker to drive the first diaphragm to vibrate can be larger, thereby avoiding the influence of insufficient driving force on the amplitude of the first diaphragm and the sensitivity of the speaker.

[0017] In some embodiments, the first through hole further includes a second inner wall, which is connected between the first inner wall and the first top surface, and the second inner wall and the first inner wall are set at an obtuse angle; the second inner wall is arranged opposite to the central magnet, and the second inner wall, the first inner wall and the second surface of the peripheral portion together form a buffer space, which is connected to the first through hole.

[0018] In this embodiment, the buffer space can be connected to the first through hole of the first magnetic conductor. This allows gas in the first chamber to enter the buffer space after passing through the first through hole, preventing gas accumulation at the first through hole and ensuring smoother gas flow between the first chamber and the first through hole. Furthermore, compared to a design where the first and second inner walls are perpendicular, this embodiment sets the first and second inner walls at an obtuse angle. This prevents eddies from forming at the junction of the first and second inner walls, thus reducing the likelihood of airflow noise and improving the speaker's sound quality.

[0019] In some embodiments, the loudspeaker further includes a first damping element disposed on the first magnetic element and covering the first through hole.

[0020] In this embodiment, by providing a first damping element, on the one hand, impurities from outside the speaker can be prevented from entering the speaker's interior through the first through hole and the first connecting hole; on the other hand, the acoustic performance of the speaker can be adjusted by regulating the damping coefficient of the first damping element, thereby improving the speaker's sound quality. For example, the first damping element can be made of mesh fabric, and the damping coefficient of the first damping element can be adjusted by changing different mesh fabrics.

[0021] In some embodiments, the loudspeaker further includes a second damping element disposed on the first magnetic element and covering the second through hole.

[0022] In this embodiment, by providing a second damping element, on the one hand, impurities from outside the speaker can be prevented from entering the speaker's interior through the second through hole and the second connecting hole; on the other hand, the acoustic performance of the speaker can be adjusted by regulating the damping coefficient of the second damping element, thereby improving the speaker's sound quality. For example, the second damping element can be made of mesh fabric, and the damping coefficient of the second damping element can be adjusted by changing different mesh fabrics.

[0023] In some embodiments, the magnetic circuit assembly further includes a second magnetic gap, which is spaced apart from the first magnetic gap; the loudspeaker also includes a second diaphragm and a second voice coil, the second diaphragm being fixed to the side of the lower frame facing away from the first diaphragm, one end of the second voice coil being fixedly connected to the second diaphragm, and the other end of the second voice coil being located in the second magnetic gap; the first magnetic conductor, the second diaphragm, and the lower frame together enclose a second chamber, which is spaced apart from the first chamber; the first diaphragm has an opening, the loudspeaker has a third channel, which is spaced apart from the first chamber, and the second chamber is connected to the opening through the third channel.

[0024] In this embodiment, the second chamber can be connected to the opening of the first diaphragm via a third channel, thereby allowing the second chamber to communicate with the outside of the speaker. It is understood that when the second diaphragm vibrates, the sound waves generated on both sides of the second diaphragm are out of phase; for example, the sound waves generated on the side of the second diaphragm facing the second chamber are out of phase with the sound waves generated on the side of the second diaphragm facing away from the second chamber. The sound waves generated on the side of the second diaphragm facing the second chamber can be transmitted from the top of the speaker through the third channel and the opening. This prevents the gas diffusing from the opening from interfering with the gas diffusing from the first and second through holes, thus reducing the likelihood of the sound waves generated on the side of the second diaphragm facing the second chamber canceling out the sound waves generated on the side of the first diaphragm facing the first chamber, preventing acoustic short circuits. Furthermore, the gas in the second chamber diffuses to the top of the speaker through the opening, allowing the sound waves generated on the side of the second diaphragm facing the second chamber and the sound waves generated on the side of the first diaphragm facing away from the first chamber to form a superposition of sound fields on the top of the speaker, thereby increasing the loudness of the speaker.

[0025] In this embodiment, since the second chamber and the third channel are separated from the first chamber, that is, the gas does not flow between the second chamber and the third channel and the first chamber, the airflow in the second chamber and the third channel can be prevented from interfering with the airflow in the first chamber, so that the sound waves propagating in the third channel and the sound waves propagating in the first chamber can cancel each other out.

[0026] In some embodiments, the projection of the opening along the axial direction of the loudspeaker onto a plane perpendicular to the axial direction of the loudspeaker is located at the center of the line connecting the centers of the first and second through holes. This allows the opening to be located away from the first and second through holes, which helps to extend the sound propagation path between the opening and the first and second through holes, thereby preventing the sound waves emitted from the opening from canceling each other out and causing an acoustic short circuit.

[0027] In some embodiments, the loudspeaker further includes a bracket located between the first diaphragm and the central magnet, and fixedly connected to the first diaphragm and the central magnet. The bracket has a third through hole, which is opposite to and communicates with the opening. The first magnetic conductor has a first through hole, and the central magnet has a second through hole. The first through hole, the second through hole, and the third through hole are opposite to and communicate with each other. The first through hole, the second through hole, and the third through hole are all part of the third channel.

[0028] In this embodiment, the first through hole, the second through hole, and the third through hole are all part of the third channel. The second chamber can be connected to the opening through the first through hole of the first magnetic conductor, the second through hole of the central magnet, and the third through hole of the bracket, so that the second chamber can be connected to the outside of the speaker.

[0029] In this embodiment, the third channel can be formed by components of the speaker itself. For example, the third channel can be formed by the first through hole of the first magnetic conductor, the second through hole of the central magnet, and the third through hole of the bracket. That is, the third channel can be integrated into the structure of the speaker itself. In this way, the speaker does not need to have an additional separate structural component to form the third channel, the structure and assembly of the speaker are simpler, and it is beneficial to the miniaturization of the speaker.

[0030] In some embodiments, the magnetic circuit assembly further includes a second magnetic conductor located between the central magnet and the support, and fixedly connected to the central magnet and the support; the second magnetic conductor has a fourth through hole, which is opposite to and communicates with the second through hole and the third through hole, and the fourth through hole is part of the third channel.

[0031] In this embodiment, the fourth through hole is part of the third channel. The second chamber can be connected to the opening through the first through hole of the first magnetic conductor, the second through hole of the central magnet, the fourth through hole of the second magnetic conductor, and the third through hole of the bracket, so that the second chamber can be connected to the outside of the speaker.

[0032] In this embodiment, the third channel can be formed by components of the speaker itself. For example, the third channel can be formed by the first through hole of the first magnetic conductor, the second through hole of the central magnet, the fourth through hole of the second magnetic conductor, and the third through hole of the bracket. That is, the third channel can be integrated into the structure of the speaker itself. In this way, the speaker does not need to have an additional separate structural component to form the third channel, the structure and assembly of the speaker are simpler, and it is beneficial to the miniaturization of the speaker.

[0033] In some embodiments, the loudspeaker further includes a second connector located between the bracket and the first diaphragm, and fixedly connecting the bracket and the first diaphragm; the second connector has a fifth through hole, which is opposite to and communicates with the third through hole and the opening, and the fifth through hole is part of the third channel.

[0034] In this embodiment, the fifth through hole is part of the third channel. The second chamber can communicate with the opening through the first through hole of the first magnetic conductor, the second through hole of the central magnet, the fourth through hole of the second magnetic conductor, the third through hole of the bracket, and the fifth through hole of the second connector, so that the second chamber can communicate with the outside of the speaker.

[0035] In this embodiment, the third channel can be formed by components of the speaker itself. For example, the third channel can be formed by the first through hole of the first magnetic conductor, the second through hole of the central magnet, the fourth through hole of the second magnetic conductor, the third through hole of the bracket, and the fifth through hole of the second connector. That is, the third channel can be integrated into the structure of the speaker itself. In this way, the speaker does not need to have an additional separate structural component to form the third channel, the structure and assembly of the speaker are simpler, and it is beneficial to the miniaturization of the speaker.

[0036] In some embodiments, the first diaphragm includes a vibrating portion, a first folded ring portion, a second folded ring portion, a first fixing portion, and a second fixing portion. The second fixing portion is disposed around the opening. The second folded ring portion surrounds the outer periphery of the second fixing portion and is connected to the second fixing portion. The vibrating portion surrounds the outer periphery of the second folded ring portion and is connected to the second folded ring portion. The first folded ring portion surrounds the outer periphery of the vibrating portion and is connected to the vibrating portion. The first fixing portion surrounds the outer periphery of the first folded ring portion and is connected to the first folded ring portion. The first fixing portion is fixedly connected to the upper frame. The second fixing portion is fixedly connected to the bracket. The vibrating portion is connected to one end of the first voice coil.

[0037] In this embodiment, one end of the first voice coil is fixedly connected to the vibrating part of the first diaphragm, and the first voice coil drives the vibrating part of the first diaphragm to vibrate when energized. By providing a first folded ring between the vibrating part of the first diaphragm and the first fixed part, and a second folded ring between the vibrating part and the second fixed part, the first and second folded rings are deformable, allowing the vibrating part to be displaced relative to the first and second fixed parts in the axial direction of the speaker. This avoids stress concentration and diaphragm cracking caused by the vibrating part being stretched during vibration.

[0038] In some embodiments, the loudspeaker further includes a third damping element disposed on the first diaphragm and covering the opening.

[0039] In this embodiment, by providing a third damping element, on the one hand, external impurities and other contaminants can be prevented from entering the speaker's interior through the opening; on the other hand, the acoustic performance of the speaker can be adjusted by regulating the damping coefficient of the third damping element, thereby improving the speaker's sound quality. For example, the third damping element can be a mesh fabric, and the damping coefficient of the third damping element can be adjusted by changing different mesh fabrics.

[0040] In some embodiments, the magnetic circuit assembly further includes a second magnetic gap, which is spaced apart from the first magnetic gap; the loudspeaker also includes a second diaphragm and a second voice coil, the second diaphragm being fixed to the side of the lower frame facing away from the first diaphragm, one end of the second voice coil being fixedly connected to the second diaphragm, and the other end of the second voice coil being located in the second magnetic gap; the first magnetic conductor, the second diaphragm, and the lower frame together enclose a second chamber, which is spaced apart from the first chamber; the upper frame is provided with a third through hole and a fourth through hole, both of which connect to the second chamber and the outside of the loudspeaker, and both of which are spaced apart from the first chamber.

[0041] In this embodiment, the second chamber can be connected to the outside of the speaker through the third and fourth through holes, so that the gas in the second chamber can flow out of the second chamber through the third and fourth through holes, and the sound waves generated by the side of the second diaphragm facing the second chamber can propagate through the third and fourth through holes, thereby realizing the sound output of the speaker.

[0042] Furthermore, since the second chamber, the third through hole, and the fourth through hole can all be spaced apart from the first chamber, the airflow in the third through hole and the fourth through hole can be prevented from interfering with the airflow in the first chamber, thus avoiding the sound waves propagating in the third through hole and the fourth through hole canceling each other out and causing an acoustic short circuit.

[0043] In some implementations, the third and fourth through holes are symmetrical about the central axis of the speaker.

[0044] In this embodiment, by setting the third and fourth through holes symmetrical about the central axis of the speaker, the gas in the second chamber flows out of the second chamber through the third and fourth through holes, and the air pressure distribution in the second chamber is more balanced. As a result, the second diaphragm is less likely to be polarized due to the air pressure imbalance in the second chamber, thus affecting the sound quality of the speaker.

[0045] In some embodiments, the center line connecting the first and second through holes is called the first connecting line, and the center line connecting the third and fourth through holes is called the second connecting line, with the first connecting line and the second connecting line being perpendicular to each other. This allows the third and fourth through holes to be located away from the first and second through holes, which helps to extend the sound propagation path between the first and third / fourth through holes, and between the second and third / fourth through holes. This prevents the sound waves transmitted from the third and fourth through holes from canceling out with the sound waves transmitted from the first and second through holes, thus avoiding acoustic short circuits.

[0046] In some embodiments, the upper basin frame includes a top wall and a side wall, the side wall being connected to the top wall and surrounding the top wall, the side wall protruding from one side of the top wall; the openings of the third through hole and the fourth through hole are both located on the side wall and penetrate the top wall; the top wall is fixed between the first diaphragm and the first surface of the peripheral portion, and the side wall is fixedly connected to the lower basin frame; the wall of the third through hole is provided with a third connecting hole, the third connecting hole connecting the third through hole and the second chamber.

[0047] In this embodiment, the second chamber can be connected to the third through hole via the third connecting hole, thereby allowing the second chamber to communicate with the outside of the speaker. In this way, sound waves generated on the side of the second diaphragm facing the second chamber can be transmitted out of the speaker through the third through hole, enabling the speaker to produce sound.

[0048] In some embodiments, the upper basin frame includes a top wall and a side wall, the side wall being connected to the top wall and surrounding the top wall, the side wall protruding from one side of the top wall; the openings of the third through hole and the fourth through hole are both located on the side wall and penetrate the top wall; the top wall is fixed between the first diaphragm and the first surface of the peripheral portion, and the side wall is fixedly connected to the lower basin frame; the wall of the fourth through hole is provided with a fourth connecting hole, the fourth connecting hole connecting the fourth through hole and the second chamber.

[0049] In this embodiment, the second chamber can be connected to the fourth through hole via the fourth connecting hole, thereby allowing the second chamber to communicate with the outside of the speaker. In this way, sound waves generated on the side of the second diaphragm facing the second chamber can be transmitted out of the speaker through the fourth through hole, enabling the speaker to produce sound.

[0050] In some embodiments, the loudspeaker further includes a housing that surrounds a first magnetic conductor, an upper frame, a lower frame, and a second diaphragm, and is fixedly connected to at least one of the first magnetic conductor, the upper frame, the lower frame, and the second diaphragm; the housing surrounds a side wall of the upper frame and a portion of the opening of a third through hole.

[0051] Understandably, in this embodiment, the housing can surround the side wall of the upper frame and part of the opening of the third through hole, so that the third through hole communicates with the side of the first diaphragm facing away from the second diaphragm, that is, with the top side of the speaker. Thus, sound waves generated in the second chamber can propagate to the top side of the speaker through the third through hole. In this way, the gas diffusing from the third through hole is less likely to interfere with the gas diffusing from the first and second through holes, and the sound waves generated by the side of the second diaphragm facing the second chamber are less likely to cancel each other out with the sound waves generated by the side of the first diaphragm facing the first chamber, thus preventing an acoustic short circuit. Furthermore, the gas in the second chamber diffuses to the top side of the speaker through the third through hole, allowing the sound waves generated by the side of the second diaphragm facing the second chamber and the sound waves generated by the side of the first diaphragm facing away from the first chamber to form a superposition of sound fields on the top side of the speaker, thereby increasing the loudness of the speaker.

[0052] In some embodiments, the loudspeaker further includes a housing that surrounds the first magnetic conductor, the upper frame, the lower frame, and the second diaphragm, and is fixedly connected to at least one of the first magnetic conductor, the upper frame, the lower frame, and the second diaphragm; the housing surrounds the side wall of the upper frame and a portion of the fourth through hole.

[0053] Understandably, in this embodiment, the housing can surround the side wall of the upper frame and part of the opening of the fourth through hole, so that the side of the first diaphragm facing away from the second diaphragm in the fourth through hole is connected, that is, connected to the top side of the speaker. Thus, sound waves generated in the second chamber can propagate to the top side of the speaker through the fourth through hole. In this way, the gas diffusing from the fourth through hole is less likely to interfere with the gas diffusing from the first and second through holes, and the sound waves generated on the side of the second diaphragm facing the second chamber are less likely to cancel each other out, thus preventing an acoustic short circuit. Furthermore, the gas in the second chamber diffuses to the top side of the speaker through the fourth through hole, allowing the sound waves generated on the side of the second diaphragm facing the second chamber and the sound waves generated on the side of the first diaphragm facing away from the first chamber to form a superposition of sound fields on the top side of the speaker, thereby increasing the loudness of the speaker.

[0054] In some embodiments, the housing is provided with a fifth through hole and a sixth through hole, the fifth through hole being opposite to and communicating with the first through hole, and the sixth through hole being opposite to and communicating with the second through hole; the fifth through hole and the sixth through hole are symmetrical about the central axis of the speaker.

[0055] In this embodiment, the first chamber can be connected to the outside of the speaker through the fifth and sixth through holes, so that gas can flow between the first chamber and the atmosphere to balance the air pressure in the first chamber.

[0056] In addition, the fifth and sixth through holes of the housing can be symmetrical about the central axis of the speaker, so that when the gas in the first chamber is connected to the atmosphere through the fifth and sixth through holes, the air pressure distribution in the first chamber is more balanced. Therefore, the first diaphragm is less likely to be polarized due to the air pressure imbalance in the first chamber, thus affecting the sound quality of the speaker.

[0057] In some embodiments, the loudspeaker also includes a fifth damping element disposed on the upper frame and covering the third connecting hole.

[0058] In this embodiment, by providing a fifth damping element, on the one hand, external impurities and other contaminants can be prevented from entering the speaker's interior through the third connecting hole; on the other hand, the acoustic performance of the speaker can be adjusted by regulating the damping coefficient of the fifth damping element, thereby improving the speaker's sound quality. For example, the fifth damping element can be a mesh fabric, and the damping coefficient of the fifth damping element can be adjusted by changing different mesh fabrics.

[0059] In some embodiments, the loudspeaker further includes a sixth damping element disposed on the upper frame and covering the fourth connecting hole.

[0060] In this embodiment, by providing a sixth damping element, two things can be done: firstly, to prevent impurities from the outside of the speaker from entering the speaker's interior through the fourth connecting hole; and secondly, by adjusting the damping coefficient of the sixth damping element, the acoustic performance of the speaker can be adjusted, thereby improving the speaker's sound quality. For example, the sixth damping element can be a mesh fabric, and the damping coefficient of the sixth damping element can be adjusted by changing different mesh fabrics.

[0061] Secondly, embodiments of this application also provide an electronic device. The electronic device includes a housing and a speaker as described above. The speaker is mounted on the housing. Thus, the electronic device can have better sound quality.

[0062] In some embodiments, the housing has an inner cavity, and the speaker is connected to the inner wall of the housing to separate the inner cavity into a front cavity and a rear cavity. The front cavity and the rear cavity are spaced apart, and the rear cavity is connected to a first through hole and a second through hole. The front cavity is located on the side of the first diaphragm facing away from the first chamber. The housing is provided with a sound outlet hole, which is connected to the front cavity and the outside of the housing.

[0063] In this embodiment, the first and second through holes of the speaker can connect to the rear cavity of the housing, thereby allowing the first chamber of the speaker to connect to the rear cavity of the housing via the first and second through holes. In this way, sound waves generated on the side of the first diaphragm facing the first cavity can be transmitted to the rear cavity of the electronic device via the first and second through holes. Furthermore, since the front cavity is located on the side of the first diaphragm facing away from the first cavity, sound waves generated on the side of the second diaphragm facing the second cavity can propagate to the front cavity of the electronic device and then exit the electronic device through the sound outlet for reception by the user.

[0064] Furthermore, since the front cavity and the rear cavity are spaced apart, the sound waves propagating from the second cavity to the front cavity of the electronic device and the sound waves propagating from the first cavity to the rear cavity of the electronic device can be separated. This avoids the sound waves generated by the second diaphragm facing the second cavity from canceling each other out and causing an acoustic short circuit.

[0065] In some embodiments, the loudspeaker has a connecting surface disposed away from the first cavity. Along the axial direction of the loudspeaker, the connecting surface is located on the side of the first through hole and the second through hole near the first diaphragm; the connecting surface is sealed to the inner wall of the housing. In this way, the front cavity and the rear cavity of the electronic device have good isolation, and the sound waves propagating to the front cavity and the sound waves propagating to the rear cavity are less likely to interfere with each other, thus preventing acoustic short circuits.

[0066] In some embodiments, the first through hole and the second through hole are spaced apart from the connecting surface along the axial direction of the speaker.

[0067] In this embodiment, by setting the first through hole and the second through hole of the speaker and the connecting surface to be spaced apart in the axial direction of the speaker, it is possible to avoid blocking the first through hole and the second through hole during the bonding process between the connecting surface of the speaker and the inner wall of the housing, thereby affecting the diffusion of gas in the first chamber. Attached Figure Description

[0068] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0069] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0070] Figure 2 yes Figure 1 The diagram shows the structure of the loudspeaker in some embodiments;

[0071] Figure 3 yes Figure 2 The speaker shown is a partial structural exploded view in some embodiments.

[0072] Figure 4 yes Figure 3 The diagram shows a partial exploded view of the magnetic circuit assembly in some embodiments.

[0073] Figure 5 yes Figure 4 A schematic diagram of the structure of the first magnetic conductor of the magnetic circuit assembly shown from another angle;

[0074] Figure 6A yes Figure 4 The diagram shows the assembly structure of the magnetic circuit assembly.

[0075] Figure 6B yes Figure 6A The diagram shows the structure of the magnetic circuit assembly from another angle.

[0076] Figure 7 yes Figure 6A The diagram shows a cross-sectional view of the magnetic circuit assembly cut along point AA.

[0077] Figure 8A yes Figure 3 The diagram shown is a structural schematic of the lower basin stand in some embodiments;

[0078] Figure 8B yes Figure 8A The diagram shows the structure of the lower basin stand at another angle;

[0079] Figure 9 yes Figure 8A The diagram shows a cross-sectional view of the lower basin stand cut along point BB.

[0080] Figure 10 yes Figure 8A The diagram shows a cross-sectional view of the lower basin stand cut along point CC.

[0081] Figure 11 yes Figure 2 The diagram shown is a partial structural schematic of a loudspeaker in some embodiments.

[0082] Figure 12 yes Figure 11 The diagram shows a cross-sectional view of the loudspeaker taken along point DD.

[0083] Figure 13 yes Figure 11 The diagram shows a cross-sectional view of the loudspeaker taken along EE.

[0084] Figure 14A yes Figure 3 The diagram shown is a structural schematic of the basin stand in some embodiments;

[0085] Figure 14B yes Figure 14A The diagram shows the structure of the upper basin stand from another angle;

[0086] Figure 15 yes Figure 2 The diagram shown is a partial structural schematic of a loudspeaker in some embodiments.

[0087] Figure 16A yes Figure 15 The diagram shows a cross-sectional view of the loudspeaker taken along the FF line.

[0088] Figure 16Byes Figure 15 The diagram shows a cross-sectional view of the loudspeaker taken along point GG.

[0089] Figure 17A yes Figure 2 The speaker shown is a schematic diagram of a partial cross-sectional structure cut along HH in some embodiments.

[0090] Figure 17B yes Figure 2 The diagram shown is a cross-sectional view of the loudspeaker cut along HH in some embodiments.

[0091] Figure 18 yes Figure 2 The speaker shown is a partial exploded view of its structure in some embodiments.

[0092] Figure 19 yes Figure 2 The diagram shown is a cross-sectional view of the loudspeaker cut along the JJ section in some embodiments.

[0093] Figure 20 yes Figure 2 The speaker shown is a front view in some embodiments;

[0094] Figure 21 yes Figure 2 The diagram shows a structural schematic of the speaker in some other embodiments;

[0095] Figure 22 yes Figure 21 The speaker shown is a partial exploded view of its structure in some embodiments.

[0096] Figure 23 yes Figure 22 The diagram shows a partial exploded view of the magnetic circuit assembly in some embodiments.

[0097] Figure 24 yes Figure 23 A schematic diagram of the structure of the first magnetic conductor of the magnetic circuit assembly shown from another angle;

[0098] Figure 25A yes Figure 23 The diagram shows the assembly structure of the magnetic circuit assembly.

[0099] Figure 25B yes Figure 25A The diagram shows the structure of the magnetic circuit assembly from another angle.

[0100] Figure 26A yes Figure 22 The diagram shown is a structural schematic of the lower basin stand in some embodiments;

[0101] Figure 26B yes Figure 26AThe diagram shows the structure of the lower basin stand at another angle;

[0102] Figure 27 yes Figure 21 The diagram shown is a partial structural schematic of a loudspeaker in some embodiments.

[0103] Figure 28A yes Figure 27 The diagram shows a cross-sectional view of part of the speaker structure taken along point KK.

[0104] Figure 28B yes Figure 27 The diagram shows a cross-sectional view of the loudspeaker taken along line LL.

[0105] Figure 29A yes Figure 22 The diagram shown is a structural schematic of the basin stand in some embodiments;

[0106] Figure 29B yes Figure 29A The diagram shows the structure of the upper basin stand from another angle;

[0107] Figure 30 yes Figure 29A The diagram shows a cross-sectional view of the upper basin stand cut along point MM.

[0108] Figure 31 yes Figure 21 The diagram shown is a partial structural schematic of a loudspeaker in some embodiments.

[0109] Figure 32A yes Figure 31 The diagram shows a cross-sectional view of the loudspeaker taken along line N1-N1.

[0110] Figure 32B yes Figure 31 The diagram shows a cross-sectional view of the loudspeaker taken along N2-N2.

[0111] Figure 33 yes Figure 21 The diagram shown is a cross-sectional view of the loudspeaker cut along P1-P1 in some embodiments.

[0112] Figure 34 yes Figure 21 The diagram shown is a cross-sectional view of the loudspeaker cut along P2-P2 in some embodiments.

[0113] Figure 35 yes Figure 21 The speaker shown is a front view in some embodiments;

[0114] Figure 36This is a comparison of finite element model simulations of the loudspeaker provided in the embodiments of this application and a single-diaphragm loudspeaker. Figure 1 ;

[0115] Figure 37 This is a comparison of finite element model simulations of the loudspeaker provided in the embodiments of this application and a single-diaphragm loudspeaker. Figure 2 ;

[0116] Figure 38 yes Figure 1 The diagram shows a cross-sectional view of the electronic device in some embodiments;

[0117] Figure 39 yes Figure 1 The illustrated electronic device is shown as a cross-sectional structural schematic diagram in some other embodiments;

[0118] Figure 40 yes Figure 39 The diagram shows a partial cross-sectional view of the electronic device from another angle. Detailed Implementation

[0119] The embodiments of this application are described below with reference to the accompanying drawings.

[0120] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection.

[0121] The directional terms mentioned in the embodiments of this application, such as "upper", "top", "bottom", "inner", "outer", "side", "front", "rear", etc., are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0122] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth," etc., may explicitly or implicitly include one or more of that feature. The term "multiple" refers to at least two.

[0123] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0124] References to “some embodiments” and the like in this specification mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, phrases such as “in some embodiments”, “in other embodiments”, etc., appearing in different parts of this specification do not necessarily refer to the same embodiments, but rather mean “one or more, but not all, embodiments”, unless otherwise specifically emphasized.

[0125] The terms "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized. It is understood that the specific embodiments described herein are merely illustrative of related embodiments and not intended to limit those embodiments. Furthermore, it should be noted that, for ease of description, only the parts relevant to the embodiments are shown in the accompanying drawings.

[0126] In the embodiments of this application, the terms "parallel," "perpendicular," etc., are used in relation to the current technological level, rather than being absolutely strict mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0° and 10°. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80° and 100°.

[0127] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0128] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0129] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an electronic device 100 provided in an embodiment of this application.

[0130] In some embodiments, the electronic device 100 may be a device with audio playback capabilities, such as headphones, mobile phone, tablet computer, multimedia player, speaker, laptop computer, in-vehicle device, foldable terminal device, television, or wearable device. Wearable devices may include smart bracelets, smartwatches, smart headsets, smart glasses, etc. This application does not strictly limit the type of electronic device 100.

[0131] Figure 1 The electronic device 100 shown is illustrated using headphones as an example. It is understood that the headphones can be wireless or wired. Wireless headphones can communicate with the terminal device using electromagnetic waves. Examples include Bluetooth headphones and infrared headphones. Wired headphones can communicate with the terminal device via a wire.

[0132] For example, the electronic device 100 may include a housing 10 and a speaker 20. The speaker 20 may be housed within the housing 10. The speaker 20 is used to convert electrical signals into sound signals, which can be propagated through the housing 10 to the outside of the electronic device 100 to achieve sound playback. The housing 10 of the electronic device 100 is the earpiece of an earphone, which is the main structure of the earphone. The earphone may also include an ear stem 30 (also called an ear stick). The ear stem 30 is fixed to the housing 10. For example, the ear stem 30 may be fixed to the side or bottom of the housing 10. For example, the housing 10 of the electronic device 100 may be provided with a sound outlet 101. The sound emitted by the speaker 20 can be transmitted out of the electronic device 100 through the sound outlet 101 to be received by the user.

[0133] For example, the electronic device 100 may further include a circuit board 40, a microcontroller unit (MCU) 50, a power supply 60 (i.e., a battery), and a microphone 70. The circuit board 40 and the microcontroller unit 50 may be housed within the housing 10, and the microcontroller unit 50 may be fixed to the circuit board 40. The power supply 60 and the microphone 70 may be housed within the ear stem 30. The power supply 60 supplies power to the electronic device 100, and the microphone 70 converts sound signals into electrical signals to enable the electronic device 100 to pick up sound. In some embodiments, the microphone 70 may be located at the bottom of the ear stem 30, or at other locations on the ear stem 30 or within the housing 10. In some embodiments, the number of microphones 70 may be one or more; when there are multiple microphones 70, they may be arranged in different locations within the electronic device 100.

[0134] In some embodiments, the electronic device 100 can be a wireless headset. The wireless headset can be applied to a headset assembly, which includes a charging case, and the wireless headset can be detachably stored inside the charging case. In this case, the electronic device 100 can be provided with a charging contact 80, which can be located at the bottom end of the ear stem 30. When the electronic device 100 is installed in the charging case of the headset assembly, the charging case can charge the electronic device 100 through the charging contact 80.

[0135] In some other embodiments, the electronic device may not include the ear stem 30, and the main components of the electronic device 100 may be housed in the housing 10, or partially housed in the housing 10 and partially housed in other parts of the electronic device 100. This application does not strictly limit the specific structure of the electronic device 100 or the arrangement of its components.

[0136] Understandable, Figure 1 Some components of the electronic device 100 are shown only schematically; the actual shape and size of these components are not subject to change. Figure 1 As defined in the accompanying drawings below. It should be understood that the electronic device 100 may include more components, such as an earplug that is fixed to the ear shell and is inserted into the user's ear canal when the user wears the electronic device 100; or, the electronic device 100 may include fewer components, such as excluding the ear stem 30.

[0137] The above text mainly introduced the structure of the electronic device 100 and the arrangement of its components. The following text will introduce the specific structure of the speaker 20 in conjunction with the relevant accompanying drawings.

[0138] Please see Figure 2 and Figure 3 , Figure 2 yes Figure 1 The diagram shown is a structural schematic of the speaker 20 in some embodiments. Figure 3 yes Figure 2 The speaker 20 shown is a partial exploded view in some embodiments.

[0139] In some embodiments, the loudspeaker 20 may include a basket 210, a magnetic circuit assembly 23, a first diaphragm 241, a second diaphragm 242, a first voice coil 251, a second voice coil 252, a bracket 260, a first connector 261, a second connector 262, a third connector 263, a first damping element 271, a second damping element 272, a third damping element 273, and a first housing 280. The basket 210 may include an upper basket 21 and a lower basket 22. It is understood that... Figure 3 The accompanying drawings below only schematically illustrate some of the components included in the speaker 20; the actual shape, size, location, and construction of these components are not subject to change. Figure 3 As well as the limitations of the accompanying figures below.

[0140] For example, the loudspeaker 20 can be a circular loudspeaker. The central axis A1-A1 of the loudspeaker 20 can pass through the center of the frame 210, the first diaphragm 241, the second diaphragm 242, the magnetic circuit assembly 23, the first voice coil 251, and the second voice coil 252. In other embodiments, the loudspeaker 20 can also be square or other shapes, which are not strictly limited in this application. For ease of description, the loudspeaker 20 and its components or structures are defined below, with the side closer to the first diaphragm 241 being designated as the "top" and the side closer to the second diaphragm 242 being designated as the "bottom".

[0141] Please see Figure 4 , Figure 4 yes Figure 3 The diagram shows a partial exploded view of the magnetic circuit assembly 23 in some embodiments.

[0142] In some embodiments, the magnetic circuit assembly 23 may include a central magnet 231, a side magnet 232, a first magnetic conductor 233, and a second magnetic conductor 234. The first magnetic conductor 233 and the second magnetic conductor 234 may be made of a magnetically conductive material. The first magnetic conductor 233 may include a main body portion 2331 and a peripheral portion 2332. The peripheral portion 2332 may be connected to the main body portion 2331 and is disposed around the main body portion 2331. Along the axial direction of the speaker 20, the main body portion 2331 may protrude beyond the peripheral portion 2332.

[0143] Please refer to the following: Figure 4 and Figure 5 , Figure 5 yes Figure 4 The schematic diagram of the first magnetic conductor 233 of the magnetic circuit assembly 23 shown from another angle.

[0144] In some embodiments, the peripheral portion 2332 of the first magnetic conductor 233 may have a first surface 2332A and a second surface 2332B disposed opposite to each other. Exemplarily, the main body portion 2331 may protrude beyond the second surface 2332B of the peripheral portion 2332. Exemplarily, the peripheral portion 2332 of the first magnetic conductor 233 may be provided with a first mounting groove 2333a and a second mounting groove 2333b. The openings of both the first mounting groove 2333a and the second mounting groove 2333b may be located on the first surface 2332A. The first mounting groove 2333a and the second mounting groove 2333b may be symmetrical about the central axis A1-A1 of the speaker 20.

[0145] It is understood that, in the embodiments of this application, the symmetry of multiple components about a certain axis may include, but is not limited to, the symmetry of the positions of multiple components about a certain axis. For example, the positions of multiple components may be symmetrical about a certain axis, and the structures of multiple components may also be symmetrical about a certain axis, or the positions of multiple components may be symmetrical about a certain axis, but the structures of multiple components may not be symmetrical about a certain axis. Furthermore, a certain degree of error is allowed in the symmetry of multiple components about a certain axis. For example, symmetry between A and B about a certain axis means that the line connecting A and B is perpendicular or approximately perpendicular to the axis of symmetry, and the angle between the line connecting A and B and the axis of symmetry is not strictly 90 degrees; the angle between the line connecting A and B and the axis of symmetry can be in the range of 80 degrees to 100 degrees. The relevant content regarding the symmetry of multiple components about a certain axis in the following text can be referred to the above description and will not be repeated here.

[0146] In this embodiment, the positions of the first mounting slot 2333a and the second mounting slot 2333b can be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the first mounting slot 2333a and the second mounting slot 2333b can also be symmetrical about the central axis A1-A1 of the speaker 20. In other embodiments, the positions of the first mounting slot 2333a and the second mounting slot 2333b can be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the first mounting slot 2333a and the second mounting slot 2333b can be similar but not symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the first mounting slot 2333a and the second mounting slot 2333b and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but can be between 80° and 100°.

[0147] For example, the peripheral portion 2332 of the first magnetic conductive element 233 may also be provided with a first connecting hole 2334a and a second connecting hole 2334b. The first connecting hole 2334a can penetrate the bottom wall of the first mounting groove 2333a, and the second connecting hole 2334b can penetrate the bottom wall of the second mounting groove 2333b. That is, both the first connecting hole 2334a and the second connecting hole 2334b can penetrate the peripheral portion 2332 of the first magnetic conductive element 233.

[0148] In this embodiment, the first connecting hole 2334a and the second connecting hole 2334b can be symmetrical about the central axis A1-A1 of the speaker 20. In some examples, the positions of the first connecting hole 2334a and the second connecting hole 2334b can be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the first connecting hole 2334a and the second connecting hole 2334b can also be symmetrical about the central axis A1-A1 of the speaker 20. In other examples, the positions of the first connecting hole 2334a and the second connecting hole 2334b can be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the first connecting hole 2334a and the second connecting hole 2334b can be similar but not symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the first connecting hole 2334a and the second connecting hole 2334b and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but can be between 80° and 100°.

[0149] For example, the peripheral portion 2332 of the first magnetic conductive member 233 may also be provided with a first clearance notch 2335, which can penetrate the first surface 2332A and the second surface 2332B and extend to the outer edge of the peripheral portion 2332. It is understood that the peripheral portion 2332 of the first magnetic conductive member 233 can be approximately annular, and can have an inner edge and an outer edge. Specifically, the inner edge of the peripheral portion 2332 can surround the main body portion 2331, and the outer edge of the peripheral portion 2332 can surround the inner edge of the peripheral portion 2332. That is, compared to the inner edge of the peripheral portion 2332, the outer edge of the peripheral portion 2332 is farther away from the central axis A1-A1 of the speaker 20.

[0150] For example, the main body 2331 of the first magnetic conductor 233 may have a third surface 2331A and a fourth surface 2331B disposed opposite to each other. The third surface 2331A has the same orientation as the first surface 2332A, and the fourth surface 2331B has the same orientation as the second surface 2332B.

[0151] For example, the main body 2331 of the first magnetic conductor 233 may be provided with a first receiving groove 2336 and a first through hole 2337. The opening of the first receiving groove 2336 may be located on the third surface 2331A and in the middle of the main body 2331. The first through hole 2337 may be located at the center of the main body 2331 and penetrate the bottom wall of the first receiving groove 2336. It is understood that the central axis A1-A1 of the speaker 20 may pass through the center of the first receiving groove 2336 and the first through hole 2337.

[0152] Please refer to the following: Figures 6A to 7 , Figure 6A yes Figure 4The diagram shows the assembly structure of the magnetic circuit component 23. Figure 6B yes Figure 6A The diagram shows the structure of the magnetic circuit assembly 23 from another angle. Figure 7 yes Figure 6A The diagram shows a cross-sectional view of the magnetic circuit assembly 23 cut along point AA.

[0153] In some embodiments, the central magnet 231 may be located in the first receiving groove 2336 of the first magnetic conductive member 233 and fixedly connected to the first magnetic conductive member 233. Exemplarily, the main body 2331 of the first magnetic conductive member 233 may surround the central magnet 231 and be spaced apart from the central magnet 231. The gap between the main body 2331 of the first magnetic conductive member 233 and the central magnet 231 forms a part of the first magnetic gap 20a.

[0154] For example, the central magnet 231 may be generally annular. The central magnet 231 may be provided with a second through hole 2311, which may be located in the middle of the central magnet 231 and be opposite to and connected to the first through hole 2337 of the first magnetic conductor 233.

[0155] In some embodiments, the second magnetic conductor 234 may be located in the first receiving groove 2336 of the first magnetic conductor 233 and fixedly connected to the central magnet 231. Along the axial direction of the speaker 20, the second magnetic conductor 234 may be located on the side of the central magnet 231 facing away from the first magnetic conductor 233. Exemplarily, the main body portion 2331 of the first magnetic conductor 233 may surround the second magnetic conductor 234 and be spaced apart from the second magnetic conductor 234. The gap between the main body portion 2331 of the first magnetic conductor 233 and the second magnetic conductor 234 forms another part of the first magnetic gap 20a.

[0156] For example, the second magnetic conductor 234 may be generally annular. The second magnetic conductor 234 may have a second receiving groove 2341 and a fourth through hole 2342. The opening of the second receiving groove 2341 may face away from the central magnet 231 and be located in the middle of the second magnetic conductor 234. The fourth through hole 2342 may be located in the middle of the second magnetic conductor 234 and penetrate the bottom wall of the second receiving groove 2341. The fourth through hole 2342 may be opposite to and communicate with the second through hole 2311 of the central magnet 231.

[0157] In some embodiments, the edge magnet 232 can be fixed to the peripheral portion 2332 of the first magnetic conductive member 233. For example, the edge magnet 232 can be fixedly connected to the second surface 2332B of the peripheral portion 2332 of the first magnetic conductive member 233. The edge magnet 232 can surround the main body portion 2331 of the first magnetic conductive member 233 and be spaced apart from the main body portion 2331. The gap between the edge magnet 232 and the main body portion 2331 of the first magnetic conductive member 233 forms a second magnetic gap 20b. For example, the edge magnet 232 may include a first magnet 2321a and a second magnet 2321b, which are arranged around the periphery of the main body portion 2331 and spaced apart from the main body portion 2331.

[0158] For example, the edge magnet 232 may be offset from the first connecting hole 2334a and the second connecting hole 2334b of the first magnetic conductor 233. For instance, the edge magnet 232 may include a first magnet 2321a and a second magnet 2321b. On a plane perpendicular to the axial direction of the speaker 20, the first magnet 2321a and the second magnet 2321b are spaced apart from the first connecting hole 2334a and the second connecting hole 2334b, and the first magnet 2321a, the second magnet 2321b, the first connecting hole 2334a, and the second connecting hole 2334b are distributed around the main body 2331 of the first magnetic conductor 233.

[0159] For example, the edge magnet 232 may be provided with a second clearance notch 2322. For instance, the edge magnet 232 may include a first magnet 2321a and a second magnet 2321b, and the first magnet 2321a may be provided with a second clearance notch 2322. The second clearance notch 2322 is opposite to and communicates with the first clearance notch 2335 of the first magnetic conductor 233.

[0160] Please refer to the following: Figure 8A and Figure 8B , Figure 8A yes Figure 3 The diagram shown is a structural schematic of the lower basin stand 22 in some embodiments. Figure 8B yes Figure 8A The diagram shows the structure of the lower basin stand 22 from another angle.

[0161] In some embodiments, the lower basket 22 may include a first top surface 221, a first bottom surface 222, and a first inner side surface 223 and a first outer side surface 224 connected between the first top surface 221 and the first bottom surface 222. The first top surface 221 and the first bottom surface 222 are disposed facing away from each other. The first inner side surface 223 may surround the central axis A1-A1 of the speaker 20, and the first outer side surface 224 may surround the second inner side surface 213, that is, the first outer side surface 224 may be located on the side of the first inner side surface 223 facing away from the central axis A1-A1 of the speaker 20. It is understood that the lower basket 22 may be generally annular, and both the first top surface 221 and the first bottom surface 222 of the lower basket 22 have inner edges and outer edges. The first inner side surface 223 may connect the inner edges of the first top surface 221 and the first bottom surface 222, and the first outer side surface 224 may connect the outer edges of the first top surface 221 and the first bottom surface 222.

[0162] For example, the lower basin stand 22 is provided with a first through hole 225a and a second through hole 225b. The opening of the first through hole 225a can be located on the first top surface 221 and extend to the first outer surface 224, that is, the first through hole 225a can penetrate through the first top surface 221 and the first outer surface 224 of the lower basin stand 22. The opening of the second through hole 225b can be located on the first top surface 221 and extend to the first outer surface 224, that is, the second through hole 225b can penetrate through the first top surface 221 and the first outer surface 224 of the lower basin stand 22.

[0163] For example, the first through-hole 225a and the second through-hole 225b are symmetrical about the central axis A1-A1 of the speaker 20. For instance, the positions of the first through-hole 225a and the second through-hole 225b can be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the first through-hole 225a and the second through-hole 225b can also be symmetrical about the central axis A1-A1 of the speaker 20. In other examples, the positions of the first through-hole 225a and the second through-hole 225b can be symmetrical about the central axis A1-A1 of the speaker 20, but the structures of the first through-hole 225a and the second through-hole 225b can be similar but not symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the first through-hole 225a and the second through-hole 225b and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but can be between 80° and 100°.

[0164] In some other embodiments, the lower frame 22 may also be provided with a third through hole and a fourth through hole, which are spaced apart from the first and second through holes. The structure of the third through hole is the same as or similar to that of the first through hole, and the structure of the fourth through hole is the same as or similar to that of the second through hole. The third and fourth through holes may be symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the third and fourth through holes and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but may be between 80° and 100°.

[0165] For example, a portion of the first top surface 221 of the lower basin stand 22 may be recessed toward the first bottom surface 222 to form a first clearance space 226. The first clearance space 226 is spaced apart from the first through hole 225a and the second through hole 225b.

[0166] For example, the lower basket 22 may also include a first limiting portion 227. The first limiting portion 227 may protrude from the first bottom surface 222. For example, the first limiting portion 227 may be disposed around the central axis A1-A1 of the speaker 20 and spaced apart from the first outer surface 224.

[0167] For example, the lower frame 22 may also be provided with a first groove 228. The opening of the first groove 228 may be located on the first bottom surface 222 and extend through the first inner side surface 223. The first groove 228 may be arranged around the central axis A1-A1 of the speaker 20.

[0168] For example, the lower basin stand 22 may also be provided with a third receiving groove 2291 and a fourth receiving groove 2292 spaced apart. The openings of the third receiving groove 2291 and the fourth receiving groove 2292 may both be located on the bottom wall of the first groove 228 and away from the first bottom surface 222 of the lower basin stand 22.

[0169] Please see Figure 9 , Figure 9 yes Figure 8A The diagram shows a cross-sectional view of the lower basin stand 22 cut along BB.

[0170] In some embodiments, the first through hole 225a may include a bottom wall 2251 and a first side wall 2252. The bottom wall 2251 of the first through hole 225a may be spaced apart from the first top surface 221, and the first side wall 2252 may be connected between the first top surface 221 and the bottom wall 2251. For example, the first side wall 2252 of the first through hole 225a may be parallel to the axial direction of the speaker 20.

[0171] For example, at least a portion of the bottom wall 2251 of the first through hole 225a may be inclined relative to the first top surface 221 to form a first inner wall 2251a. It is understood that the bottom wall 2251 of the first through hole 225a may be partially or completely inclined relative to the first top surface 221. For example, along the direction from the first outer surface 224 toward the central axis A1-A1 of the speaker 20, the first inner wall 2251a is close to the first top surface 221.

[0172] For example, the first sidewall 2252 of the first through hole 225a may include a second inner wall 2252a, which is disposed opposite to the first inner sidewall 223. The first inner wall 2251a and the second inner wall 2252a may be disposed at an obtuse angle.

[0173] It is understandable that the structure of the second through hole 225b can be the same as or similar to the structure of the first through hole 225a, symmetrical or partially symmetrical, or different. The basic structural design and connection design of the second through hole 225b can refer to the relevant scheme of the first through hole 225a, while slight differences in the detailed structure or positional arrangement between the second through hole 225b and the first through hole 225a are permissible. Specific details will not be elaborated here.

[0174] In this embodiment, the structure of the second through hole 225b is symmetrical to that of the first through hole 225a about the central axis A1-A1 of the speaker 20.

[0175] Please refer to the following: Figure 8B and Figure 10 , Figure 10 yes Figure 8A The diagram shows a cross-sectional view of the lower basin stand 22 cut along CC.

[0176] In some embodiments, the lower basin stand 22 may further be provided with a first extension hole 2293 and a second extension hole 2294 spaced apart. One end opening of the first extension hole 2293 may be located on the first outer side 224, and the other end opening of the first extension hole 2293 may extend to the third receiving groove 2291. It is understood that the first extension hole 2293 may connect to the third receiving groove 2291. One end opening of the second extension hole 2294 may be located on the first outer side 224, and the other end opening of the second extension hole 2294 may extend to the fourth receiving groove 2292. It is understood that the second extension hole 2294 may connect to the fourth receiving groove 2292.

[0177] Please refer to the following: Figure 11 and Figure 12 , Figure 11 yes Figure 2 The diagram shown is a partial structural schematic of the speaker 20 in some embodiments. Figure 12 yes Figure 11 The diagram shows a cross-sectional view of the speaker 20 taken along point DD. Exemplary, Figure 11 The main illustration shows the assembly structure of the magnetic circuit assembly 23 and the lower basket 22.

[0178] In some embodiments, the lower basin stand 22 can be fixedly connected to the magnetic circuit assembly 23. For example, the first top surface 221 of the lower basin stand 22 can be fixedly connected to the second surface 2332B of the peripheral portion 2332 of the first magnetic conductor 233. In this case, the first outer surface 224 of the lower basin stand 22 can be positioned away from the central magnet 231.

[0179] For example, along the axial direction of the speaker 20, the peripheral portion 2332 of the first magnetic conductor 233 may cover the first through hole 225a and the second through hole 225b of the lower frame 22. The first connecting hole 2334a of the first magnetic conductor 233 may be opposite to and communicate with the first through hole 225a of the lower frame 22.

[0180] Please refer to the following: Figure 11 and Figure 13 , Figure 13 yes Figure 11 The diagram shows a cross-sectional view of the loudspeaker 20 cut along EE.

[0181] In some embodiments, the side magnet 232 may be located in the first clearance space 226 of the lower basin stand 22 and fixedly connected to the lower basin stand 22. The side magnet 232 may be disposed around the main body 2331 of the first magnetic conductor 233. The first magnet 2321a and the second magnet 2321b of the side magnet 232 are both spaced apart from the first through hole 225a and the second through hole 225b.

[0182] For example, a portion of the lower basin stand 22 may be located within the second clearance notch 2322 of the side magnet 232. One end opening of the first extension hole 2293 of the lower basin stand 22 may be disposed opposite to the side magnet 232, and one end opening of the second extension hole 2294 of the lower basin stand 22 may be disposed opposite to the side magnet 232.

[0183] Please refer to the following: Figure 14A and Figure 14B , Figure 14A yes Figure 3 The diagram shown is a structural schematic of the upper basin stand 21 in some embodiments. Figure 14B yes Figure 14A The diagram shows the upper basin stand 21 from another angle.

[0184] In some embodiments, the upper basin 21 may include a second top surface 211, a second bottom surface 212, and a second inner side surface 213 and a second outer side surface 214 connected between the second top surface 211 and the second bottom surface 212. The second top surface 211 and the second bottom surface 212 are disposed opposite to each other. The second inner side surface 213 may surround the central axis A1-A1 of the speaker 20, and the second outer side surface 214 may surround the second inner side surface 213, that is, the second outer side surface 214 may be located on the side of the second inner side surface 213 opposite to the central axis A1-A1 of the speaker 20. It is understood that the upper basin 21 may be generally annular, and both the second top surface 211 and the second bottom surface 212 of the upper basin 21 have inner edges and outer edges. The second inner side surface 213 may connect the inner edges of the second top surface 211 and the second bottom surface 212, and the second outer side surface 214 may connect the outer edges of the second top surface 211 and the second bottom surface 212.

[0185] In some embodiments, the upper basin stand 21 may be provided with a second limiting portion 215, which may protrude from the second top surface 211. For example, the second limiting portion 215 may be disposed along the inner edge of the second top surface 211, and a portion of the surface of the second limiting portion 215 may be connected to the second inner side surface 213. For example, the second limiting portion 215 may be spaced apart from the second outer side surface 214.

[0186] For example, the upper basin stand 21 may also be provided with a protrusion 216, which may protrude from the second inner side surface 213. The protrusion 216 may be provided with a fifth receiving groove 218a and a sixth receiving groove 218b spaced apart. The openings of the fifth receiving groove 218a and the sixth receiving groove 218b may face the second top surface 211.

[0187] In some embodiments, the upper frame 21 may also be provided with a first clearance groove 217a and a second clearance groove 217b, the openings of which may be located on the second bottom surface 212 and extend to the second inner surface 213. Exemplarily, the first clearance groove 217a and the second clearance groove 217b are spaced apart from the protrusion 216. The first clearance groove 217a and the second clearance groove 217b may be symmetrical about the central axis A1-A1 of the speaker 20.

[0188] Please refer to the following: Figures 15 to 16B , Figure 15 yes Figure 2 The diagram shown is a partial structural schematic of the speaker 20 in some embodiments. Figure 16A yes Figure 15 The diagram shows a cross-sectional view of the loudspeaker 20 taken along FF. Figure 16B yes Figure 15 The diagram shows a cross-sectional view of the speaker 20 taken along line GG. Exemplary, Figure 15 The assembly structure of the magnetic circuit assembly 23, the lower basin frame 22, and the upper basin frame 21 is mainly shown.

[0189] In some embodiments, the upper basin stand 21 may be fixedly connected to the magnetic circuit assembly 23. For example, the upper basin stand 21 may be fixedly connected to the peripheral portion 2332 of the first magnetic conductor 233. For instance, the second bottom surface 212 of the upper basin stand 21 may be fixedly connected to the first surface 2332A of the peripheral portion 2332. The first clearance groove 217a of the upper basin stand 21 may be disposed opposite to the first mounting groove 2333a of the first magnetic conductor 233, and the second clearance groove 217b of the upper basin stand 21 may be disposed opposite to the second mounting groove 2333b of the first magnetic conductor 233.

[0190] Please see Figure 16B The upper basin stand 21 may also be provided with a third extension hole 219a and a fourth extension hole 219b spaced apart. One end opening of the third extension hole 219a may be located on the second outer side 214, and the other end opening of the third extension hole 219a may extend to the fifth receiving groove 218a. It is understood that the third extension hole 219a may connect to the fifth receiving groove 218a. For example, one end opening of the fourth extension hole 219b may be located on the second outer side 214, and the other end opening of the fourth extension hole 219b may extend to the sixth receiving groove 218b. It is understood that the fourth extension hole 219b may connect to the sixth receiving groove 218b.

[0191] Please see Figure 17A , Figure 17A yes Figure 2 The diagram shows a partial cross-sectional view of the loudspeaker 20 taken along section HH in some embodiments. For example, Figure 17A The main illustration shows the assembly structure of the magnetic circuit assembly 23, the lower frame 22, the upper frame 21, the first diaphragm 241, the first voice coil 251, and the support 260.

[0192] In some embodiments, the first diaphragm 241 is fixedly connected to the basin frame 210. For example, the first diaphragm 241 can be fixedly connected to the second top surface 211 of the upper basin frame 21 via a first connector 261. Exemplarily, the first connector 261 can be annular, for example, the first connector 261 can be a steel ring or a copper ring. The first connector 261 can be located between the second top surface 211 of the upper basin frame 21 and the first diaphragm 241, and fixedly connect the second top surface 211 of the upper basin frame 21 and the first diaphragm 241. In other examples, the first connector 261 and the first diaphragm 241 can also be integrally formed structural components.

[0193] For example, the first connector 261 may be disposed around the second limiting portion 215. It is understood that in this embodiment, the first connector 261 can be positioned by the second limiting portion 215, thereby facilitating the assembly of the first connector 261. For example, the first diaphragm 241 may include a vibrating portion 2411, a first folded ring portion 2412, a second folded ring portion 2413, a first fixing portion 2414, and a second fixing portion 2415. The first fixing portion 2414 surrounds the outer periphery of the first folded ring portion 2412 and is connected to the first folded ring portion 2412; the first folded ring portion 2412 surrounds the outer periphery of the vibrating portion 2411 and is connected to the vibrating portion 2411; the vibrating portion 2411 surrounds the outer periphery of the second folded ring portion 2413 and is connected to the second folded ring portion 2413; and the second folded ring portion 2413 surrounds the outer periphery of the second fixing portion 2415 and is connected to the second fixing portion 2415. It is understood that the first folding ring portion 2412 can be connected between the first fixing portion 2414 and the vibrating portion 2411, and the second folding ring portion 2413 can be connected between the second fixing portion 2415 and the vibrating portion 2411. The first fixing portion 2414 can be fixedly connected to the upper frame 21, and the second fixing portion 2415 can be fixedly connected to the bracket 260. The first folding ring portion 2412 and the second folding ring portion 2413 can be deformable; for example, they can be ring structures with an overall arcuate surface. This arcuate ring structure is easily deformable and stretched, allowing the vibrating portion 2411 to be displaced relative to the first fixing portion 2414 and the second fixing portion 2415 in the axial direction of the speaker 20.

[0194] In some examples, the first diaphragm 241 may further include a first dome 2411a, which may be fixed to the top or bottom side of the vibrating portion 2411 of the first diaphragm 241. The first dome 2411a may be made of materials such as aluminum alloy. The first dome 2411a has a certain degree of stiffness that can be used to increase the rigidity of the vibrating portion 2411 of the first diaphragm 241 and prevent deformation of the vibrating portion 2411 of the first diaphragm 241.

[0195] For example, the first diaphragm 241 may have an opening 2410. The opening 2410 may be located in the middle of the first diaphragm 241, and the second fixing part 2415 may surround the opening 2410.

[0196] For example, the first voice coil 251 can be arranged around the central axis A1-A1 of the speaker 20. One end of the first voice coil 251 is fixedly connected to the first diaphragm 241, for example, one end of the first voice coil 251 can be fixedly connected to the vibrating part 2411 of the first diaphragm 241. The other end of the first voice coil 251 (that is, the end of the first voice coil 251 away from the first diaphragm 241) can be located in the first magnetic gap 20a of the magnetic circuit assembly 23. In this embodiment, when the first voice coil 251 is energized, the first voice coil 251 generates a force in the magnetic field of the magnetic circuit assembly 23, thereby driving the first diaphragm 241 to vibrate. The first diaphragm 241 drives the air to vibrate, so as to realize the speaker 20 to produce sound. The first voice coil 251 can receive alternating signals and generate alternating forces in the magnetic field. The first voice coil 251 drives the first diaphragm 241 to vibrate in the direction of the first voice coil 251 along the axis of the first voice coil 251. The axis of the first voice coil 251 is the same as the axis of the loudspeaker 20. The vibration direction of the first diaphragm 241 is usually perpendicular to the first diaphragm 241 itself.

[0197] In this embodiment, one end of the first voice coil 251 is fixedly connected to the vibrating part 2411 of the first diaphragm 241. When the first voice coil 251 is energized, it drives the vibrating part 2411 of the first diaphragm 241 to vibrate. By providing a first folded ring 2412 between the vibrating part 2411 of the first diaphragm 241 and the first fixed part 2414, and a second folded ring 2413 between the vibrating part 2411 and the second fixed part 2415, the first folded ring 2412 and the second folded ring 2413 are deformable, allowing the vibrating part 2411 to be displaced relative to the first fixed part 2414 and the second fixed part 2415 in the axial direction of the speaker 20. This avoids stress concentration and diaphragm cracking in the first diaphragm 241 due to tension caused by the vibrating part 2411 vibrating.

[0198] In some embodiments, at least a portion of the magnetic circuit assembly 23, the first diaphragm 241, a portion of the frame 210, and the first connector 261 can collectively enclose the first chamber 201. Exemplarily, the first magnetic conductor 233, the central magnet 231, the second magnetic conductor 234, the first diaphragm 241, the upper frame 21, and the first connector 261 can collectively enclose the first chamber 201. In other embodiments, the speaker 20 may not include the first connector 261, and the first diaphragm 241 may be fixedly connected to the second top surface 211 of the upper frame 21. In this case, the first magnetic conductor 233, the central magnet 231, the second magnetic conductor 234, the first diaphragm 241, and the upper frame 21 can collectively enclose the first chamber 201.

[0199] For example, the first chamber 201 can be connected to the first connecting hole 2334a and the second connecting hole 2334b of the first magnetic conductor 233. The first chamber 201 can be connected to the first through hole 225a of the lower frame 22 through the first connecting hole 2334a, thereby connecting to the outside of the speaker 20. It is understood that the first connecting hole 2334a of the first magnetic conductor 233 and the first through hole 225a of the lower frame 22 can together form the first channel of the speaker 20, and the first chamber 201 of the speaker 20 can be connected to the outside of the speaker 20 through the first channel. For example, the first chamber 201 can also be connected to the second through hole 225b of the lower frame 22 through the second connecting hole 2334b, thereby connecting to the outside of the speaker 20. It is understood that the second connecting hole 2334b of the first magnetic conductor 233 and the second through hole 225b of the lower frame 22 can together form the second channel of the speaker 20, and the first chamber 201 of the speaker 20 can be connected to the outside of the speaker 20 through the second channel.

[0200] In this embodiment, by setting the first connecting hole 2334a and the second connecting hole 2334b symmetrical about the central axis A1-A1 of the speaker 20, the gas in the first chamber 201 flows through the first connecting hole 2334a to the first through hole 225a and through the second connecting hole 2334b to the second through hole 225b. As a result, the gas pressure distribution in the first chamber 201 is more balanced. Therefore, the first diaphragm 241 is less likely to be polarized due to the gas pressure imbalance in the first chamber 201, thus affecting the sound quality of the speaker 20.

[0201] In this embodiment, the first channel and the second channel can serve as the rear venting channels of the loudspeaker 20, and the first chamber 201 of the loudspeaker 20 can be connected to the outside of the loudspeaker 20 through the first channel and the second channel. In this way, gas can circulate between the first chamber 201 and the atmosphere to balance the air pressure inside the first chamber 201. In addition, the first channel and the second channel (including the first through hole 225a and the first connecting hole 2334a, the second through hole 225b and the second connecting hole 2334b) can be formed by components of the loudspeaker 20 itself. For example, the first through hole 225a and the second through hole 225b can be formed by the lower frame 22, and the first connecting hole 2334a and the second connecting hole 2334b can be formed by the first magnetic conductor 233. That is, the first channel and the second channel (including the first through hole 225a and the first connecting hole 2334a, the second through hole 225b and the second connecting hole 2334b) can be integrated into the structure of the loudspeaker 20 itself. In this way, the speaker 20 does not require additional separate structural components to form the first through hole 225a and the first connecting hole 2334a, the second through hole 225b and the second connecting hole 2334b. The structure of the speaker 20 is relatively simple, which is conducive to the miniaturization of the speaker 20.

[0202] Please refer to it again. Figure 17A In this embodiment, the first through-hole 225a and the second through-hole 225b are symmetrical about the central axis A1-A1 of the speaker 20. It is understood that the first chamber 201 can be connected to the outside of the speaker 20 through the first through-hole 225a and the second through-hole 225b, allowing gas inside the first chamber 201 to flow out through the first through-hole 225a and the second through-hole 225b to balance the air pressure inside the first chamber 201. By setting the first through-hole 225a and the second through-hole 225b symmetrical about the central axis A1-A1 of the speaker 20, the air pressure distribution inside the first chamber 201 is more even after the gas flows out through the first through-hole 225a and the second through-hole 225b. Therefore, the first diaphragm 241 is less likely to be polarized due to pressure imbalance inside the first chamber 201, thus affecting the sound quality of the speaker 20.

[0203] In this embodiment, a portion of the openings of the first through hole 225a and the second through hole 225b can be located on the first top surface 221, so that the first through hole 225a and the second through hole 225b can communicate with the first connecting hole 2334a and the second connecting hole 2334b respectively, to connect the first chamber 201; and a portion of the openings of the first through hole 225a and the second through hole 225b are provided on the first outer side surface 224 of the lower frame 22, so that the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201 can be diffused to the outer periphery of the speaker 20 through the first through hole 225a and the second through hole 225b.

[0204] It is understandable that when the first diaphragm 241 vibrates, the sound waves generated on both sides of the first diaphragm 241 are out of phase. For example, the sound waves generated on the side of the first diaphragm 241 facing the first chamber 201 are out of phase with the sound waves generated on the side of the first diaphragm 241 facing away from the first chamber 201. In this embodiment, by setting a portion of the opening of the first through hole 225a and the second through hole 225b on the first outer side 224 of the lower frame 22, the sound waves generated on the side of the first diaphragm 241 facing the first chamber 201 are less likely to diffuse to the top side of the speaker 20 and interfere with the sound waves generated on the side of the first diaphragm 241 facing away from the first chamber 201. This helps to avoid the sound waves with opposite phases canceling each other out and causing an acoustic short circuit, thereby affecting the sound quality of the speaker 20.

[0205] For example, the first inner wall 2251a of the first through hole 225a of the lower basket 22 can be disposed opposite to the first connecting hole 2334a of the first magnetic conductor 233. Along the direction from the first outer side surface 224 toward the central axis A1-A1 of the speaker 20, the first inner wall 2251a is close to the periphery 2332 of the first magnetic conductor 233. In this way, the path length of gas flowing from the first through-hole 225a to the outside of the speaker 20 can be reduced, allowing the gas inside the first through-hole 225a to diffuse to the outside of the speaker 20 more quickly, and preventing gas from accumulating inside the first through-hole 225a. Furthermore, because the path length of gas flowing from the first through-hole 225a to the outside of the speaker 20 is reduced, the driving force required by the speaker 20 to push the gas out of the first through-hole 225a is smaller. Therefore, the driving force required by the speaker 20 to drive the first diaphragm 241 to vibrate can be larger, thereby avoiding insufficient driving force that could affect the amplitude of the first diaphragm 241 and the sensitivity of the speaker 20, especially the mid-frequency sensitivity of the speaker 20. It is understood that in this embodiment, the mid-frequency range of the speaker 20 is in the range of 300Hz to 3000Hz.

[0206] For example, the second inner wall 2252a can be disposed opposite to the central magnet 231. The second inner wall 2252a, the first inner wall 2251a, and the second surface 2332B of the peripheral portion 2332 can together form a buffer space 2253. The buffer space 2253 can be connected to the first through hole 2334a of the first magnetic conductor 233. In this way, the gas in the first chamber 201 can enter the buffer space 2253 after passing through the first through hole 2334a, and the gas is less likely to accumulate at the first through hole 2334a, thereby making the gas flow between the first chamber 201 and the first through hole 225a smoother. In addition, compared with the scheme where the first inner wall 2251a and the second inner wall 2252a are arranged perpendicularly, the embodiment of this application sets the first inner wall 2251a and the second inner wall 2252a at an obtuse angle, so that after the gas enters the buffer space 2253, it is not easy to form eddies at the connection between the first inner wall 2251a and the second inner wall 2252a and generate airflow noise, thereby improving the sound quality of the speaker 20.

[0207] In the embodiments of this application, the design scheme of the second through hole 225b can be referred to the relevant description of the first through hole 225a, and will not be repeated here.

[0208] In some embodiments, the second fixing portion 2415 of the first diaphragm 241 can be fixedly connected to the second magnetic conductor 234 via the second connector 262 and the bracket 260. The bracket 260 can be fixedly connected to the second magnetic conductor 234. For example, the bottom end of the bracket 260 can be located in the second receiving groove 2341 of the second magnetic conductor 234 to make the assembly structure more stable and accurate.

[0209] For example, the second connector 262 may be located between the bracket 260 and the first diaphragm 241, and fixedly connect the bracket 260 and the first diaphragm 241. In other examples, the second connector 262 and the first diaphragm 241 may also be integrally formed structural components. For example, the second connector 262 may be generally annular, for example, the second connector 262 may be a steel ring or a copper ring. The second connector 262 may be provided with a fifth through hole 2621. The fifth through hole 2621 of the second connector 262 may be opposite to and communicate with the opening 2410 of the first diaphragm 241.

[0210] For example, the bracket 260 can be approximately annular, and the bracket 260 may have a third through hole 2601. The third through hole 2601 of the bracket 260 can be opposite to and connected to the fourth through hole 2342 of the second magnetic conductor 234 and the fifth through hole 2621 of the second connector 262. At this time, the first through hole 2337 of the first magnetic conductor 233, the second through hole 2311 of the central magnet 231, the fourth through hole 2342 of the second magnetic conductor 234, the third through hole 2601 of the bracket 260, and the fifth through hole 2621 of the second connector 262 can be interconnected and together constitute the third channel 2021 of the speaker 20.

[0211] For example, the third channel 2021 can be connected to the opening 2410 of the first diaphragm 241, so that the third channel 2021 can be connected to the outside of the speaker 20 through the opening 2410. The third channel 2021 is spaced apart from the first chamber 201, that is, there is no gas flow between the third channel 2021 and the first chamber 201.

[0212] In some other embodiments, the speaker 20 may not include the second connector 262, and the first diaphragm 241 may be fixedly connected to the bracket 260. In this case, the first through hole 2337 of the first magnetic conductor 233, the second through hole 2311 of the central magnet 231, the fourth through hole 2342 of the second magnetic conductor 234, and the third through hole 2601 of the bracket 260 may be interconnected and together constitute the third channel 2021 of the speaker 20.

[0213] In this embodiment, the third channel 2021 can be formed by components of the speaker 20 itself. For example, the third channel 2021 can be formed by the first through hole 2337 of the first magnetic conductor 233, the second through hole 2311 of the central magnet 231, the fourth through hole 2342 of the second magnetic conductor 234, the third through hole 2601 of the bracket 260, and the fifth through hole 2621 of the second connector 262. That is, the third channel 2021 can be integrated into the structure of the speaker 20 itself. In this way, the speaker 20 does not need to be provided with a separate structural component to form the third channel 2021, the structure and assembly of the speaker 20 are relatively simple, and it is beneficial to the miniaturization of the speaker 20.

[0214] Please see Figure 17B , Figure 17B yes Figure 2 The speaker 20 shown is a schematic cross-sectional view of a section taken along HH in some embodiments.

[0215] In some embodiments, the second diaphragm 242 is fixedly connected to the basin frame 210. For example, the second diaphragm 242 can be fixed to the side of the lower basin frame 22 facing away from the first magnetic conductor 233 by a third connector 263. Exemplarily, the third connector 263 can be generally annular, for example, the third connector 263 can be a steel ring or a copper ring. The third connector 263 can be fixedly connected to the first bottom surface 222 of the lower basin frame 22. In other examples, the third connector 263 and the second diaphragm 242 can also be integrally formed structural components. Exemplarily, the third connector 263 can be disposed around the first limiting portion 227. It is understood that in this embodiment, the third connector 263 can be positioned by the first limiting portion 227, thereby facilitating the assembly of the third connector 263.

[0216] For example, the second diaphragm 242 may include a first vibrating part 2421, a third folded ring part 2422, and a third fixing part 2423. The third folded ring part 2422 surrounds the outer periphery of the first vibrating part 2421 and is connected to the first vibrating part 2421. The third fixing part 2423 surrounds the outer periphery of the third folded ring part 2422 and is connected to the third folded ring part 2422. The third fixing part 2423 can be fixedly connected to the lower frame 22. The third folded ring part 2422 may be deformable; for example, it may be a ring structure with an overall arcuate surface, which is easily deformed and stretched to allow the first vibrating part 2421 to be displaced relative to the third fixing part 2423 in the axial direction of the speaker 20. The first groove 228 of the lower frame 22 can be used to avoid deformation of the third folded ring part 2422 of the second diaphragm 242.

[0217] In some examples, the second diaphragm 242 may further include a second dome 2421a, which may be fixed to the top or bottom side of the first vibrating part 2421 of the second diaphragm 242. The second dome 2421a may be made of materials such as aluminum alloy. The second dome 2421a can be used to increase the stiffness of the first vibrating part 2421 of the second diaphragm 242 and prevent deformation of the first vibrating part 2421 of the second diaphragm 242.

[0218] For example, the second diaphragm 242, the third connector 263, the lower frame 22, and the first magnetic conductor 233 can collectively enclose the second chamber 202. The second chamber 202 can be spaced apart from the first chamber 201. The second chamber 202 can communicate with the first through hole 2337 of the first magnetic conductor 233, so that the second chamber 202 can communicate with the outside of the speaker 20 through the third channel 2021 and the opening 2410. In some other embodiments, the speaker 20 may not include the third connector 263, and the second diaphragm 242 can be fixedly connected to the first bottom surface 222 of the lower frame 22. In this case, the second diaphragm 242, the lower frame 22, and the first magnetic conductor 233 can collectively enclose the second chamber 202.

[0219] For example, the second voice coil 252 may be arranged around the central axis A1-A1 of the speaker 20. One end of the second voice coil 252 is fixedly connected to the second diaphragm 242, for example, one end of the second voice coil 252 may be fixedly connected to the first vibrating part 2421 of the second diaphragm 242. The other end of the second voice coil 252 (that is, the end of the second voice coil 252 away from the second diaphragm 242) may be located in the second magnetic gap 20b.

[0220] In this embodiment, when the second voice coil 252 is energized, it generates a force in the magnetic field of the magnetic circuit assembly 23, thereby driving the second diaphragm 242 to vibrate. The second diaphragm 242 then vibrates the air, causing the speaker 20 to produce sound. The second voice coil 252 can receive alternating signals and generate alternating forces in the magnetic field. The direction in which the second voice coil 252 drives the first diaphragm 241 to vibrate is along the axial direction of the second voice coil 252, which is the same as the axial direction of the speaker 20. The vibration direction of the second diaphragm 242 is generally also perpendicular to the second diaphragm 242 itself.

[0221] It is understood that when the second diaphragm 242 vibrates, the sound waves generated on both sides of the second diaphragm 242 are out of phase. For example, the sound waves generated on the side of the second diaphragm 242 facing the second chamber 202 are out of phase with the sound waves generated on the side of the second diaphragm 242 facing away from the second chamber 202. The sound waves generated on the side of the second diaphragm 242 facing the second chamber 202 can be transmitted through the third channel 2021 and the opening 2410. The third channel 2021 can serve as the sound output channel of the loudspeaker 20. In this embodiment, since the second chamber 202 and the third channel 2021 are both spaced apart from the first chamber 201, interference between the airflow in the second chamber 202 and the third channel 2021 and the airflow in the first chamber 201 can be avoided, preventing the sound waves propagating in the third channel 2021 from canceling each other out.

[0222] Please refer to the following: Figure 17A and Figure 17B In this embodiment, the gas in the second chamber 202 can diffuse to the top side of the speaker 20 through the opening 2410. This prevents the gas diffused from the opening 2410 from interfering with the gas diffused from the first through-hole 225a and the second through-hole 225b. Consequently, the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 are less likely to cancel each other out with the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201, thus preventing an acoustic short circuit. Furthermore, the diffusion of the gas in the second chamber 202 to the top side of the speaker 20 through the opening 2410 allows the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 and the sound waves generated by the side of the first diaphragm 241 facing away from the first chamber 201 to form a superimposed sound field on the top side of the speaker 20, thereby increasing the loudness of the speaker 20.

[0223] In some embodiments, the center line connecting the first through hole 225a and the second through hole 225b is a first connecting line A2-A2. Projected along the axial direction of the speaker 20, the projection of the opening 2410 on a plane perpendicular to the axial direction of the speaker 20 can be located at the center of the first connecting line A2-A2. In this way, the opening 2410 can be located away from the first through hole 225a and the second through hole 225b, which helps to extend the sound propagation path between the opening 2410 and the first and second through holes 225a and 225b. This avoids the sound waves transmitted from the opening 2410 canceling out with the sound waves transmitted from the first and second through holes 225a and 225b, thus preventing an acoustic short circuit. That is, it avoids the sound waves from the rear venting channel and the sound output channel canceling out each other, thus preventing an acoustic short circuit.

[0224] In some embodiments, the first damping element 271 may be disposed on the first magnetic conductive element 233 and cover the first connecting hole 2334a. In this embodiment, by providing the first damping element 271, on the one hand, impurities outside the speaker 20 can be blocked from entering the interior of the speaker 20 through the first through hole 225a and the first connecting hole 2334a; on the other hand, the acoustic performance of the speaker 20 can be adjusted by adjusting the damping coefficient of the first damping element 271, thereby improving the sound quality of the speaker 20. For example, the first damping element 271 can be made of mesh fabric, and the damping coefficient of the first damping element 271 can be adjusted by changing different mesh fabrics. For example, the second damping element 272 may be disposed on the first magnetic conductive element 233 and cover the second connecting hole 2334b. In this embodiment, by providing the second damping element 272, on the one hand, it can prevent impurities from the outside of the speaker 20 from entering the interior of the speaker 20 through the second through hole 225b and the second connecting hole 2334b; on the other hand, by adjusting the damping coefficient of the second damping element 272, the acoustic performance of the speaker 20 can be adjusted, thereby improving the sound quality of the speaker 20. For example, the second damping element 272 can be made of mesh fabric, and the damping coefficient of the second damping element 272 can be adjusted by changing different mesh fabrics.

[0225] For example, the first damping member 271 can be fixed to the first mounting groove 2333a of the first magnetic conductive member 233 by adhesive, and the second damping member 272 can be fixed to the second mounting groove 2333b of the first magnetic conductive member 233 by adhesive. This allows for better utilization of the space inside the speaker 20, improving the internal space utilization rate. Simultaneously, the installation of the first damping member 271 inside the speaker 20 also gives the speaker 20 advantages in terms of appearance and overall assembly. For example, the first clearance groove 217a and the second clearance groove 217b of the upper frame 21 can be used to avoid the first damping member 271 and the second damping member 272, respectively.

[0226] In some embodiments, the third damping member 273 may be disposed on the first diaphragm 241 and cover the opening 2410. In this embodiment, by providing the third damping member 273, on the one hand, impurities from outside the speaker 20 can be prevented from entering the speaker 20 through the opening 2410; on the other hand, the acoustic performance of the speaker 20 can be adjusted by adjusting the damping coefficient of the third damping member 273, thereby improving the sound quality of the speaker 20. For example, the third damping member 273 may be a mesh fabric, and the damping coefficient of the third damping member 273 can be adjusted by changing different mesh fabrics. Exemplarily, the third damping member 273 may be fixed to the second fixing part 2415 of the first diaphragm 241 by adhesive and cover the opening 2410.

[0227] In some embodiments, the first housing 280 may be fixed to the side of the second diaphragm 242 facing away from the frame 22. The first housing 280 and the second diaphragm 242 may together enclose the third chamber 203. For example, the first housing 280 may have a through hole 282, which connects the third chamber 203 to the outside of the speaker 20, thus allowing the third chamber 203 to communicate with the outside of the speaker 20. This allows gas to circulate between the third chamber 203 and the atmosphere to balance the air pressure within the third chamber 203. Furthermore, sound waves generated on the side of the second diaphragm 242 facing away from the second chamber 202 can be diffused through the through hole 282 of the first housing 280 to the bottom side of the speaker 20, meaning the third chamber 203 can serve as the rear venting chamber of the speaker 20. In this way, the sound waves generated on the side of the second diaphragm 242 facing away from the second chamber 202 are less likely to interfere with the sound waves that diffuse from the third channel 2021 to the top side of the speaker 20 (that is, the sound waves generated on the side of the second diaphragm 242 facing the second chamber 202). This helps to avoid the sound waves with opposite phases canceling each other out and causing an acoustic short circuit, which would affect the sound quality of the speaker 20.

[0228] In some embodiments, the speaker 20 may further include a fourth damping member 281, which may be fixed to the first housing 280 and cover the through hole 282 of the first housing 280. For example, the fourth damping member 281 may be a mesh fabric.

[0229] Please refer to the following: Figure 18 and Figure 19 , Figure 18 yes Figure 2 The speaker 20 shown is a partial exploded view in some embodiments. Figure 19 yes Figure 2 The speaker 20 shown is a schematic cross-sectional view of the speaker 20 cut along the JJ in some embodiments.

[0230] In some embodiments, the speaker 20 may further include a first electrical connection assembly 291 and a second electrical connection assembly 292. The first electrical connection assembly 291 may include a first electrical connector 2911 and a second electrical connector 2912. One end of the first electrical connector 2911 may be located in the fifth receiving groove 218a of the upper basin 21, and the other end may extend through the third extension hole 219a. One end of the second electrical connector 2912 may be located in the sixth receiving groove 218b of the upper basin 21 (see [link to documentation]). Figure 16B The other end protrudes through the fourth extension hole 219b. The first electrical connector 2911 and the second electrical connector 2912 are used for electrical connection to an external power source. For example, the second clearance notch 2322 of the side magnet 232 can avoid the first electrical connection assembly 291.

[0231] In some embodiments, the first voice coil 251 can be electrically connected to an external power source via a first electrical connection assembly 291. Exemplarily, the first voice coil 251 may have a first wiring portion 2511, which may be led out from the body of the first voice coil 251 and located outside the body of the first voice coil 251. There may be two first wiring portions 2511, one of which may be electrically connected to a first electrical connector 2911, and the other may be electrically connected to a second electrical connector 2912, thereby forming a current loop between the first electrical connector 2911, the first voice coil 251, and the second electrical connector 2912 to energize the first voice coil 251.

[0232] In some embodiments, the second electrical connection assembly 292 may include a third electrical connector 2921 and a fourth electrical connector 2922. One end of the third electrical connector 2921 may be located in the third receiving groove 2291 of the lower basin stand 22, and the other end may extend through the first extension hole 2293. One end of the fourth electrical connector 2922 may be located in the fourth receiving groove 2292 of the lower basin stand 22 (see [link to documentation]). Figure 10 The other end protrudes through the second extension hole 2294. The third electrical connector 2921 and the fourth electrical connector 2922 are used for electrical connection to an external power source. For example, the first clearance notch 2335 of the first magnetic conductor 233 and the second clearance notch 2322 of the side magnet 232 can avoid the second electrical connection assembly 292.

[0233] In some embodiments, the second voice coil 252 can be electrically connected to an external power source via the second electrical connection assembly 292. Exemplarily, the second voice coil 252 may have a second wiring portion 2521, which can be led out from the body of the second voice coil 252 and located outside the body of the second voice coil 252. There can be two second wiring portions 2521, one of which can be electrically connected to a third electrical connector 2921, and the other can be electrically connected to a fourth electrical connector 2922, thereby forming a current loop between the third electrical connector 2921, the second voice coil 252, and the fourth electrical connector 2922 to energize the second voice coil 252.

[0234] In some embodiments, the first electrical connection component 291 and the second electrical connection component 292 may be arranged at an axial distance along the speaker 20. Both the first electrical connection component 291 and the second electrical connection component 292 are offset from the first through-hole 225a and the second through-hole (not shown). For example, the first electrical connection component 291 and the second electrical connection component 292 may be located on the perpendicular bisector of the line connecting the centers of the first through-hole 225a and the second through-hole (not shown), so that the first electrical connection component 291 and the second electrical connection component 292 are disposed away from the first through-hole 225a and the second through-hole (not shown). It is understandable that the first electrical connection component 291 and the second electrical connection component 292 are usually fixed to the flexible circuit board outside the speaker 20 by welding and then applying glue. By staggering the first electrical connection component 291 and the second electrical connection component 292 from the first through hole 225a and the second through hole (not shown), it is possible to avoid blocking the first through hole 225a and the second through hole (not shown) during the glue application process, thereby affecting the diffusion of gas in the first chamber 201.

[0235] It is understood that, in this embodiment, the first voice coil 251 can be electrically connected to an external power source via the first electrical connection component 291, thereby energizing the first voice coil 251; the second voice coil 252 can be electrically connected to an external power source via the second electrical connection component 292, thereby energizing the second voice coil 252. In some embodiments, the first voice coil 251 can be communicatively connected to a first circuit of the electronic device 100 via the first electrical connection component 291, and the second voice coil 252 can be communicatively connected to a second circuit of the electronic device 100 via the first electrical connection component 291. Thus, the electronic device 100 can control the vibration of the first diaphragm 241 via the first circuit and control the vibration of the second diaphragm 242 via the second circuit, thereby enabling the speaker 20 to achieve different acoustic effects. For example, the electronic device 100 can control the first diaphragm 241 and the second diaphragm 242 through the first circuit and the second circuit respectively, so that the first diaphragm 241 and the second diaphragm 242 vibrate in the same direction, thereby enhancing the loudness of the speaker 20; or, the electronic device 100 can use an algorithm to control the amplitude and phase of the first diaphragm 241 and the second diaphragm 242, so that the first diaphragm 241 and the second diaphragm 242 move in opposite directions, thereby enabling the speaker 20 to achieve a better sound leakage prevention effect.

[0236] In other embodiments, the first electrical connection component 291 and the second electrical connection component 292 may also be arranged at intervals around the central axis A1-A1 of the speaker 20, and the first electrical connection component 291 and the second electrical connection component 292 are both offset from the first through hole 225a and the second through hole (not shown).

[0237] Please refer to the following: Figure 18 and Figure 20 , Figure 20 yes Figure 2 The speaker 20 shown is a front view in some embodiments.

[0238] In some embodiments, the speaker 20 may have a connecting surface 204, which may be disposed away from the first chamber 201. Figure 20 The connecting surface 204 is schematically outlined with a dashed box. For example, along the axial direction of the speaker 20, the connecting surface 204 can be located on the side of the first through hole 225a and the second through hole 225b near the first diaphragm 241. That is, the connecting surface 204 can be located on the top side of the first through hole 225a and the second through hole 225b. It is understood that along the axial direction of the speaker 20, both the first through hole 225a and the second through hole 225b are spaced apart from the connecting surface 204.

[0239] For example, at least a portion of the second outer surface 214 of the upper basin stand 21, at least a portion of the outer surface of the first connector 261, and at least a portion of the outer surface of the peripheral portion 2332 of the first magnetic conductor 233 can together form a connecting surface 204. In other examples, at least a portion of the second outer surface 214 of the upper basin stand 21 can form a connecting surface 204. In still other examples, at least a portion of the second outer surface 214 of the upper basin stand 21 and at least a portion of the outer surface of the first connector 261 can together form a connecting surface 204.

[0240] In some embodiments, the distance between the first through hole 225a and the second through hole 225b and the first diaphragm 241 along the axial direction of the speaker 20 is in the range of 0.7 mm to 0.8 mm. In this way, the area of ​​the connecting surface 204 of the speaker 20 can be set to be larger, which facilitates the subsequent assembly of the speaker 20.

[0241] Please refer to the following: Figure 21 and Figure 22 , Figure 21 yes Figure 2 The diagram shown is a structural schematic of the speaker 20 in some other embodiments. Figure 22 yes Figure 21 The speaker 20 shown is a partial exploded view in some embodiments. Figure 21 The speaker 20 shown may include most of the technical content of the previous embodiments. The following mainly describes the differences between the two, and the most common aspects of the two will not be repeated.

[0242] In this embodiment, the loudspeaker 20 may include a basket 210, a magnetic circuit assembly 23, a first diaphragm 241, a second diaphragm 242, a first voice coil 251, a second voice coil 252, a first damping element 271, a second damping element 272, a fifth damping element 274, a sixth damping element 275, and a housing 283. The basket 210 may include an upper basket 21 and a lower basket 22. It is understood that... Figure 22 The accompanying drawings below only schematically illustrate some of the components included in the speaker 20; the actual shape, size, location, and construction of these components are not subject to change. Figure 22 As well as the limitations of the accompanying figures below.

[0243] Please refer to the following: Figure 23 and Figure 24 , Figure 23 yes Figure 22 The diagram shown is a partial exploded view of the magnetic circuit assembly 23 in some embodiments. Figure 24 yes Figure 23 The schematic diagram of the first magnetic conductor 233 of the magnetic circuit assembly 23 shown from another angle.

[0244] In some embodiments, the magnetic circuit assembly 23 may include a central magnet 231, a side magnet 232, a first magnetic conductive element 233, and a second magnetic conductive element 234. The design of the magnetic circuit assembly 23 is similar to that of the magnetic circuit assembly 23 in the embodiments described above, except that:

[0245] In this embodiment, the first magnetic conductive element 233 may further include a third clearance groove 2338a and a fourth clearance groove 2338b. The third clearance groove 2338a and the fourth clearance groove 2338b may be located at the peripheral portion 2332 of the first magnetic conductive element 233 and penetrate the first surface 2332A, the second surface 2332B, and the outer side surface. It is understood that the outer side surface of the peripheral portion 2332 of the first magnetic conductive element 233 may connect to the first surface 2332A and the second surface 2332B, and is located on the side of the peripheral portion 2332 of the first magnetic conductive element 233 that is away from the main body portion 2331.

[0246] For example, the third clearance groove 2338a and the fourth clearance groove 2338b are spaced apart. Both the third clearance groove 2338a and the fourth clearance groove 2338b are spaced apart from the first clearance notch 2335 of the first magnetic conductor 233, and also spaced apart from the first mounting groove 2333a and the second mounting groove 2333b, that is, spaced apart from the first connecting hole 2334a and the second connecting hole 2334b.

[0247] In some embodiments, the third clearance groove 2338a and the fourth clearance groove 2338b may be symmetrical about the central axis A1-A1 of the speaker 20. Exemplarily, the positions of the third clearance groove 2338a and the fourth clearance groove 2338b may be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the third clearance groove 2338a and the fourth clearance groove 2338b may also be symmetrical about the central axis A1-A1 of the speaker 20. In other embodiments, the positions of the third clearance groove 2338a and the fourth clearance groove 2338b may be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the third clearance groove 2338a and the fourth clearance groove 2338b may be similar but not symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the third clearance groove 2338a and the fourth clearance groove 2338b and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but may be between 80° and 100°.

[0248] In some embodiments, the center line connecting the third clearance groove 2338a and the fourth clearance groove 2338b may be perpendicular to the center line connecting the first connecting hole 2334a and the second connecting hole 2334b. For example, the third clearance groove 2338a and the fourth clearance groove 2338b may be located on the perpendicular bisector of the center line connecting the first connecting hole 2334a and the second connecting hole 2334b.

[0249] For example, the first magnetic conductive element 233 may also be provided with a clearance area 2339, which may penetrate a portion of the peripheral portion 2332 of the first magnetic conductive element 233 and extend to the outer surface of the peripheral portion 2332. For example, the clearance area 2339 may also be connected to the fourth clearance groove 2338b.

[0250] Please refer to the following: Figure 25A and Figure 25B , Figure 25A yes Figure 23 The diagram shows the assembly structure of the magnetic circuit component 23. Figure 25B yes Figure 25A The diagram shows the structure of the magnetic circuit assembly 23 from another angle.

[0251] In this embodiment, the side magnet 232 can be staggered from the first connecting hole 2334a, the second connecting hole 2334b, the third clearance groove 2338a and the fourth clearance groove 2338b of the first magnetic conductor 233.

[0252] For example, the side magnet 232 may include a fifth magnet 2323a, a sixth magnet 2323b, a third magnet 2324a, and a fourth magnet 2324b. The fifth magnet 2323a and the sixth magnet 2323b may be symmetrical about the central axis A1-A1 of the speaker 20, and the third magnet 2324a and the fourth magnet 2324b may also be symmetrical about the central axis A1-A1 of the speaker 20.

[0253] For example, on a plane perpendicular to the central axis A1-A1 of the speaker 20, the fifth magnet 2323a, the sixth magnet 2323b, the third magnet 2324a, the fourth magnet 2324b, the first connecting hole 2334a, the second connecting hole 2334b, the third clearance groove 2338a, and the fourth clearance groove 2338b can be distributed at intervals around the main body 2331 of the first magnetic conductor 233.

[0254] Please refer to the following: Figure 26A and Figure 26B , Figure 26A yes Figure 22 The diagram shown is a structural schematic of the lower basin stand 22 in some embodiments. Figure 26B yes Figure 26A The diagram shows the structure of the lower basin stand 22 from another angle.

[0255] In this embodiment, the lower basin stand 22 may also be provided with a fifth clearance groove 220a and a sixth clearance groove 220b. The fifth clearance groove 220a and the sixth clearance groove 220b can penetrate the first top surface 221, the first bottom surface 222 and the first inner surface 223 of the lower basin stand 22, and connect the first clearance space 226 and the first groove 228 of the lower basin stand 22.

[0256] For example, the fifth clearance groove 220a and the sixth clearance groove 220b are spaced apart. Both the fifth clearance groove 220a and the sixth clearance groove 220b are spaced apart from the third receiving groove 2291 and the fourth receiving groove 2292 of the lower tray 22.

[0257] In some embodiments, the fifth clearance groove 220a and the sixth clearance groove 220b may be symmetrical about the central axis A1-A1 of the speaker 20. Exemplarily, the positions of the fifth clearance groove 220a and the sixth clearance groove 220b may be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the fifth clearance groove 220a and the sixth clearance groove 220b may also be symmetrical about the central axis A1-A1 of the speaker 20. In other embodiments, the positions of the fifth clearance groove 220a and the sixth clearance groove 220b may be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the fifth clearance groove 220a and the sixth clearance groove 220b may be similar but not symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the fifth clearance groove 220a and the sixth clearance groove 220b and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but may be between 80° and 100°.

[0258] In some embodiments, the center line connecting the fifth clearance groove 220a and the sixth clearance groove 220b may be perpendicular to the center line connecting the first through hole 225a and the second through hole 225b. For example, the fifth clearance groove 220a and the sixth clearance groove 220b may be located on the perpendicular bisector of the center line connecting the first through hole 225a and the second through hole 225b.

[0259] Please refer to the following: Figures 27 to 28B , Figure 27 yes Figure 21 The diagram shown is a partial structural schematic of the speaker 20 in some embodiments. Figure 28A yes Figure 27 The diagram shows a partial cross-sectional view of the speaker 20 taken along point KK. Figure 28B yes Figure 27 The diagram shows a cross-sectional view of the loudspeaker 20 taken along line LL. Exemplary, Figure 27 The main illustration shows the assembly structure of the magnetic circuit assembly 23 and the lower basket 22.

[0260] In this embodiment, the lower basin stand 22 can be fixedly connected to the magnetic circuit assembly 23. For example, the first top surface 221 of the lower basin stand 22 can be fixedly connected to the second surface 2332B of the peripheral portion 2332 of the first magnetic conductor 233.

[0261] For example, along the axial direction of the speaker 20, the peripheral portion 2332 of the first magnetic guide 233 can cover the first through hole 225a and the second through hole 225b of the lower frame 22. The first connecting hole 2334a of the first magnetic guide 233 can be opposite to and connected to the first through hole 225a of the lower frame 22. The second connecting hole 2334b of the first magnetic guide 233 can be opposite to and connected to the second through hole 225b of the lower frame 22. The design scheme of the first through hole 225a and the second through hole 225b can be referred to Figure 17A and Figure 17B The details regarding the speaker 20 shown will not be repeated hereafter.

[0262] For example, the third clearance groove 2338a of the first magnetic conductor 233 can be connected to the fifth clearance groove 220a of the lower basin stand 22. The fourth clearance groove 2338b of the first magnetic conductor 233 can be connected to the sixth clearance groove 220b of the lower basin stand 22.

[0263] For example, at least a portion of the side magnet 232 may be located in the first clearance space 226 of the lower basin stand 22. The side magnet 232 may be disposed around the main body 2331 of the first magnetic conductor 233. The side magnet 232 is spaced apart from the first through hole 225a and the second through hole 225b of the lower basin stand 22. A portion of the first inner side surface 223 of the lower basin stand 22 may be disposed around the third magnet 2324a.

[0264] Please refer to the following: Figure 29A and Figure 29B , Figure 29A yes Figure 22 The diagram shown is a structural schematic of the upper basin stand 21 in some embodiments. Figure 29B yes Figure 29A The diagram shows the upper basin stand 21 from another angle.

[0265] In this embodiment, the upper basin stand 21 may further include a top wall 2101 and a side wall 2102. The side wall 2102 connects to the top wall 2101 and surrounds the top wall 2101. The side wall 2102 may protrude from one side of the top wall 2101. It can be understood that a portion of the second top surface 211 of the upper basin stand 21 may be located on the top wall 2101, and another portion may be located on the side wall 2102; a portion of the second bottom surface 212 of the upper basin stand 21 may be located on the top wall 2101, and another portion may be located on the side wall 2102; a portion of the second inner side surface 213 of the upper basin stand 21 may be located on the top wall 2101, and another portion may be located on the side wall 2102; a portion of the second outer side surface 214 of the upper basin stand 21 may be located on the top wall 2101, and another portion may be located on the side wall 2102.

[0266] In this embodiment, the upper basin stand 21 may also be provided with a third clearance space 2103a and a fourth clearance space 2103b, which may be located on the top wall 2101. The openings of the third clearance space 2103a and the fourth clearance space 2103b may be located on the second top surface 211 and extend to the first inner surface 223. The third clearance space 2103a and the fourth clearance space 2103b may penetrate the bottom wall of the first clearance groove 217a to connect with the first clearance groove 217a. The fourth clearance space 2103b may penetrate the bottom wall of the second clearance groove 217b to connect with the second clearance groove 217b.

[0267] Please refer to the following: Figures 29A to 30 , Figure 30 yes Figure 29A The diagram shows a cross-sectional view of the upper basin stand 21 cut along MM.

[0268] In this embodiment, the upper frame 21 may be provided with a third through hole 2104a and a fourth through hole 2104b. The openings of the third through hole 2104a and the fourth through hole 2104b may be located on the side wall 2102 and penetrate the top wall 2101. The wall of the third through hole 2104a may be provided with a third connecting hole 2105a, which can penetrate the wall of the third through hole 2104a. For example, the third connecting hole 2105a can penetrate the wall of the third through hole 2104a in the axial direction of the speaker 20. The wall of the fourth through hole 2104b may be provided with a fourth connecting hole 2105b, which can penetrate the wall of the fourth through hole 2104b. For example, the fourth connecting hole 2105b can penetrate the groove wall of the fourth through hole 2104b in the axial direction of the speaker 20.

[0269] In some embodiments, the third through-hole 2104a and the fourth through-hole 2104b may be symmetrical about the central axis A1-A1 of the speaker 20. Exemplarily, the positions of the third through-hole 2104a and the fourth through-hole 2104b may be symmetrical about the central axis A1-A1 of the speaker 20, and the structures of the third through-hole 2104a and the fourth through-hole 2104b may also be symmetrical about the central axis A1-A1 of the speaker 20. In other embodiments, the positions of the third through-hole 2104a and the fourth through-hole 2104b may be symmetrical about the central axis A1-A1 of the speaker 20, but the structures of the third through-hole 2104a and the fourth through-hole 2104b are similar but not symmetrical about the central axis A1-A1 of the speaker 20. Furthermore, the angle between the line connecting the third through-hole 2104a and the fourth through-hole 2104b and the central axis A1-A1 of the speaker 20 is not strictly 90 degrees, but may be between 80° and 100°.

[0270] In some embodiments, the center line connecting the third through hole 2104a and the fourth through hole 2104b may be perpendicular to the center line connecting the third clearance space 2103a and the fourth clearance space 2103b. For example, the third through hole 2104a and the fourth through hole 2104b may be located on the perpendicular bisector of the center line connecting the third clearance space 2103a and the fourth clearance space 2103b.

[0271] In some embodiments, the upper basin stand 21 may also be provided with a fifth mounting groove 2106a and a sixth mounting groove 2106b. Both the fifth mounting groove 2106a and the sixth mounting groove 2106b may be located on the side wall 2102 of the upper basin stand 21, and the openings of the fifth mounting groove 2106a and the sixth mounting groove 2106b may face away from the top wall 2101. The fifth mounting groove 2106a may be positioned around the third connecting hole 2105a. The sixth mounting groove 2106b may be positioned around the fourth connecting hole 2105b.

[0272] Please refer to the following: Figures 31 to 32B , Figure 31 yes Figure 21 The diagram shown is a partial structural schematic of the speaker 20 in some embodiments. Figure 32A yes Figure 31 The diagram shows a cross-sectional view of the loudspeaker 20 taken along line N1-N1. Figure 32B yes Figure 31 The diagram shows a cross-sectional view of the loudspeaker 20 taken along line N2-N2. Exemplary, Figure 31 The assembly structure of the magnetic circuit assembly 23, the lower basin frame 22, and the upper basin frame 21 is mainly shown.

[0273] In this embodiment, the upper basin frame 21 can be fixedly connected to the magnetic circuit assembly 23. For example, a portion of the upper basin frame 21 can be fixedly connected to the peripheral portion 2332 of the first magnetic conductor 233. For instance, the top wall 2101 of the upper basin frame 21 can be fixedly connected to the first surface 2332A of the peripheral portion 2332. For example, the first clearance groove 217a of the upper basin frame 21 can be disposed opposite to the first mounting groove 2333a of the first magnetic conductor 233, and the second clearance groove 217b of the upper basin frame 21 can be disposed opposite to the second mounting groove 2333b of the first magnetic conductor 233. For example, the third clearance space 2103a of the upper basin frame 21 can be disposed opposite to the first mounting groove 2333a of the first magnetic conductor 233, and the fourth clearance space 2103b of the upper basin frame 21 can be disposed opposite to the second mounting groove 2333b of the first magnetic conductor 233.

[0274] For example, the side wall 2102 of the upper basin stand 21 can be fixedly connected to the lower basin stand 22. For instance, a portion of the side wall 2102 of the upper basin stand 21 can be located in the clearance area 2339 of the first magnetic guide member 233 and fixedly connected to the lower basin stand 22; a portion of the side wall 2102 of the upper basin stand 21 can be located in the third clearance groove 2338a of the first magnetic guide member 233 and fixedly connected to the lower basin stand 22; a portion of the side wall 2102 of the upper basin stand 21 can be located in the fourth clearance groove 2338b of the first magnetic guide member 233 and fixedly connected to the lower basin stand 22.

[0275] For example, the third connecting hole 2105a of the upper basin stand 21 may be disposed opposite to at least a portion of the fifth clearance groove 220a of the lower basin stand 22. The fourth connecting hole 2105b of the upper basin stand 21 may be disposed opposite to at least a portion of the sixth clearance groove 220b of the lower basin stand 22.

[0276] Please see Figure 33 , Figure 33 yes Figure 21 The speaker 20 shown is a schematic cross-sectional view of a section cut along P1-P1 in some embodiments.

[0277] In this embodiment, the first diaphragm 241 may include a second vibrating part 2416, a fourth folded ring part 2417, and a fourth fixing part 2418. The fourth folded ring part 2417 surrounds the outer periphery of the second vibrating part 2416 and is connected to the second vibrating part 2416. The fourth fixing part 2418 surrounds the outer periphery of the fourth folded ring part 2417 and is connected to the fourth folded ring part 2417. The fourth fixing part 2418 can be fixedly connected to the upper frame 21. The fourth folded ring part 2417 may be deformable. For example, the fourth folded ring part 2417 may be a ring structure with an overall arc surface. This arc-shaped ring structure is easy to deform and stretch, so that the second vibrating part 2416 can be displaced relative to the fourth fixing part 2418.

[0278] For example, the fourth fixing portion 2418 of the first diaphragm 241 is fixedly connected to the top wall 2101 of the upper frame 21. It can be understood that the fourth fixing portion 2418 of the first diaphragm 241 is fixedly connected to the portion of the second top surface 211 of the upper frame 21 located on the top wall 2101. One end of the first voice coil 251 is fixedly connected to the second vibrating portion 2416 of the first diaphragm 241, and the other end of the first voice coil 251 is located at the first magnetic gap 20a of the magnetic circuit assembly 23.

[0279] In some embodiments, at least a portion of the magnetic circuit assembly 23, the first diaphragm 241, and a portion of the frame 210 can collectively enclose the first chamber 201. Exemplarily, the first magnetic conductor 233, the central magnet 231, the second magnetic conductor 234, the first diaphragm 241, and the upper frame 21 can collectively enclose the first chamber 201. The first chamber 201 can connect to the outside of the speaker 20 through the first through hole 2334a of the first magnetic conductor 233, which is connected to the first through hole 225a of the lower frame 22. The first chamber 201 can also connect to the outside of the speaker 20 through the second through hole 2334b of the first magnetic conductor 233, which is connected to the second through hole 225b of the lower frame 22.

[0280] It is understood that the first connecting hole 2334a of the first magnetic conductor 233 and the first through hole 225a of the lower frame 22 can together form the first channel of the speaker 20, and the second connecting hole 2334b of the first magnetic conductor 233 and the second through hole 225b of the lower frame 22 can together form the second channel of the speaker 20. The first chamber 201 of the speaker 20 can be connected to the outside of the speaker 20 through the first channel and the second channel. In this way, gas can circulate between the first chamber 201 and the atmosphere to balance the air pressure inside the first chamber 201. Furthermore, the first through hole 225a and the first connecting hole 2334a, the second through hole 225b and the second connecting hole 2334b can be formed by components of the speaker 20 itself. For example, the first through hole 225a and the second through hole 225b can be formed by the lower frame 22, and the first connecting hole 2334a and the second connecting hole 2334b can be formed by the first magnetic conductor 233. That is, the first through hole 225a and the first connecting hole 2334a, the second through hole 225b and the second connecting hole 2334b can be integrated into the structure of the speaker 20 itself. In this way, the speaker 20 does not need to have additional separate structural components to form the first through hole 225a and the first connecting hole 2334a, the second through hole 225b and the second connecting hole 2334b. The structure of the speaker 20 is relatively simple and it is conducive to the miniaturization of the speaker 20.

[0281] In this embodiment, the first through-hole 225a and the second through-hole 225b are symmetrical about the central axis A1-A1 of the speaker 20. It is understood that the first chamber 201 can communicate with the outside of the speaker 20 through the first through-hole 225a and the second through-hole 225b, allowing gas inside the first chamber 201 to flow out through the first through-hole 225a and the second through-hole 225b. By setting the first through-hole 225a and the second through-hole 225b symmetrical about the central axis A1-A1 of the speaker 20, the gas inside the first chamber 201 flows out through the first through-hole 225a and the second through-hole 225b, resulting in a more balanced gas pressure distribution within the first chamber 201. This prevents the first diaphragm 241 from becoming polarized due to pressure imbalance within the first chamber 201, thus affecting the sound quality of the speaker 20.

[0282] It is understandable that when the first diaphragm 241 vibrates, the sound waves generated on both sides of the first diaphragm 241 are out of phase. For example, the sound waves generated on the side of the first diaphragm 241 facing the first chamber 201 are out of phase with the sound waves generated on the side of the first diaphragm 241 facing away from the first chamber 201. In this embodiment, by providing the first through hole 225a and the second through hole 225b on the first outer surface 224 of the lower frame 22, the sound waves generated on the side of the first diaphragm 241 facing the first chamber 201 can be diffused to the outer periphery of the speaker 20 through the first through hole 225a and the second through hole 225b. In this way, the sound waves generated on the side of the first diaphragm 241 facing the first chamber 201 are less likely to diffuse to the top side of the speaker 20 and interfere with the sound waves generated on the side of the first diaphragm 241 facing away from the first chamber 201, thereby helping to avoid the cancellation of sound waves with opposite phases, which would cause an acoustic short circuit and thus affect the sound quality of the speaker 20.

[0283] Please see Figure 34 , Figure 34 yes Figure 21 The speaker 20 shown is a schematic cross-sectional view of a section taken along P2-P2 in some embodiments.

[0284] In this embodiment, the second diaphragm 242 is fixedly connected to the first bottom surface 222 of the lower frame 22. The first magnetic conductor 233, the second diaphragm 242, and the lower frame 22 can together enclose the second chamber 202. The second chamber 202 can be spaced apart from the first chamber 201. The second chamber 202 can communicate with the third connecting hole 2105a and the fourth connecting hole 2105b of the upper frame 21, so that the second chamber 202 can communicate with the outside of the speaker 20 through the third through hole 2104a and the fourth through hole 2104b. In this way, the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 can be transmitted out of the speaker 20 through the third through hole 2104a and the fourth through hole 2104b, realizing the sound output of the speaker 20.

[0285] It is understood that the third connecting hole 2105a and the third through hole 2104a can together form the fourth channel, and the fourth connecting hole 2105b and the fourth through hole 2104b can together form the fifth channel. Both the fourth and fifth channels can serve as the sound output channels of the speaker 20. In this embodiment, since the second chamber 202, the fourth channel, and the fifth channel can all be spaced apart from the first chamber 201, interference between the airflow in the fourth and fifth channels and the airflow in the first chamber 201 can be avoided, which would cause the sound waves propagating in the fourth and fifth channels (i.e., the sound waves generated by the second diaphragm 242 towards the second chamber 202) and the sound waves propagating in the first chamber 201 (i.e., the sound waves generated by the first diaphragm 241 towards the first chamber 201) to cancel each other out, resulting in an acoustic short circuit.

[0286] It is understood that the second chamber 202 can be connected to the outside of the speaker 20 through the third through hole 2104a and the fourth through hole 2104b, so that the gas in the second chamber 202 can flow out of the second chamber 202 through the third through hole 2104a and the fourth through hole 2104b. In this embodiment, by setting the third through hole 2104a and the fourth through hole 2104b to be symmetrical about the central axis A1-A1 of the speaker 20, the gas pressure distribution in the second chamber 202 is more even after the gas in the second chamber 202 flows out of the second chamber 202 through the third through hole 2104a and the fourth through hole 2104b. Therefore, the second diaphragm 242 is less likely to be polarized due to the pressure imbalance in the second chamber 202, thus affecting the sound quality of the speaker 20.

[0287] Please refer to the following: Figure 33 and Figure 34 In some embodiments, the center line connecting the third through hole 2104a and the fourth through hole 2104b is the second connecting line A3-A3, and the center line connecting the first through hole 225a and the second through hole 225b is the first connecting line A2-A2. The second connecting line A3-A3 and the first connecting line A2-A2 can be perpendicular to each other. For example, the third through hole 2104a and the fourth through hole 2104b can be located on the perpendicular bisector of the center line connecting the first through hole 225a and the second through hole 225b. In this way, the third through hole 2104a and the fourth through hole 2104b can be far away from the first through hole 225a and the second through hole 225b, which helps to extend the sound propagation path between the first through hole 225a and the third through hole 2104a and the fourth through hole 2104b, and between the second through hole 225b and the third through hole 2104a and the fourth through hole 2104b. This can prevent the sound waves transmitted from the third through hole 2104a and the fourth through hole 2104b from canceling each other out and causing an acoustic short circuit.

[0288] In some embodiments, the fifth damping member 274 may be disposed on the upper frame 21 and cover the third connecting hole 2105a. In this embodiment, by providing the fifth damping member 274, on the one hand, impurities outside the speaker 20 can be prevented from entering the interior of the speaker 20 through the third connecting hole 2105a; on the other hand, the acoustic performance of the speaker 20 can be adjusted by adjusting the damping coefficient of the fifth damping member 274, thereby improving the sound quality of the speaker 20. For example, the fifth damping member 274 may be a mesh fabric, and the damping coefficient of the fifth damping member 274 can be adjusted by changing different mesh fabrics. Exemplarily, the fifth damping member 274 may be fixed to the fifth mounting groove 2106a of the upper frame 21 by adhesive and cover the third connecting hole 2105a.

[0289] In some embodiments, the speaker 20 may further include a sixth damping element 275, which may be disposed on the upper frame 21 and cover the fourth connecting hole 2105b. In this embodiment, by providing the sixth damping element 275, on the one hand, impurities from outside the speaker 20 can be prevented from entering the interior of the speaker 20 through the fourth connecting hole 2105b; on the other hand, the acoustic performance of the speaker 20 can be adjusted by adjusting the damping coefficient of the sixth damping element 275, thereby improving the sound quality of the speaker 20. For example, the sixth damping element 275 may be a mesh fabric, and the damping coefficient of the sixth damping element 275 can be adjusted by changing different mesh fabrics. Exemplarily, the sixth damping element 275 may be fixed to the sixth mounting groove 2106b of the upper frame 21 by adhesive and cover the fourth connecting hole 2105b.

[0290] Please refer to it again. Figure 33 and Figure 34 In this embodiment, the housing 283 can surround the second diaphragm 242, the lower basin frame 22, the first magnetic conductor 233, and the upper basin frame 21, and is fixedly connected to at least one of the second diaphragm 242, the lower basin frame 22, the first magnetic conductor 233, and the upper basin frame 21. The housing 283 can be used to protect the second diaphragm 242, the lower basin frame 22, the first magnetic conductor 233, and the upper basin frame 21.

[0291] For example, the housing 283 may include a bottom 2831 and a side 2832. The side 2832 may be connected to the periphery of the bottom 2831 and protrude from one side of the bottom 2831. The bottom 2831 of the housing 283 may be fixed to the bottom side of the second diaphragm 242, and together with the second diaphragm 242, enclose the third chamber 203. For example, the bottom 2831 of the housing 283 may have a through hole 2833, which may connect the third chamber 203 to the outside of the speaker 20, thus allowing the third chamber 203 to communicate with the outside of the speaker 20. This allows gas to circulate between the third chamber 203 and the atmosphere to balance the air pressure within the third chamber 203. Furthermore, sound waves generated on the side of the second diaphragm 242 facing away from the second chamber 202 can be diffused through the through hole 2833 of the housing 283 to the bottom side of the speaker 20, meaning the third chamber 203 can serve as a rear venting chamber for the speaker 20. Since the through hole 2833 of the housing 283 is located at the bottom 2831 of the housing 283, the sound waves generated by the side of the second diaphragm 242 facing away from the second chamber 202 are less likely to interfere with the sound waves that diffuse from the third through hole 2104a and the fourth through hole 2104b to the top side of the speaker 20 (that is, the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202). This helps to avoid the sound waves with opposite phases canceling each other out and causing an acoustic short circuit, which would affect the sound quality of the speaker 20.

[0292] The side portion 2832 can be roughly circular and can surround the lower frame 22, the first magnetic conductor 233, and the upper frame 21. For example, the side portion 2832 of the housing 283 can surround the side wall 2102 of the upper frame 21 and part of the opening of the third through hole 2104a, so that the third through hole 2104a communicates with the side of the first diaphragm 241 facing away from the second diaphragm 242, that is, communicates with the top side of the speaker 20, so that the sound waves generated in the second chamber 202 can be propagated to the top side of the speaker 20 through the third connecting hole 2105a and the third through hole 2104a.

[0293] For example, the side portion 2832 of the housing 283 can surround the side wall 2102 of the upper frame 21 and part of the opening of the fourth through hole 2104b, so that the side of the first diaphragm 241 facing away from the second diaphragm 242 of the fourth through hole 2104b is connected, that is, connected to the top side of the speaker 20, so that the sound waves generated in the second chamber 202 can be propagated to the top side of the speaker 20 through the fourth connecting hole 2105b and the fourth through hole 2104b.

[0294] In this embodiment, the gas in the second chamber 202 can diffuse to the top side of the speaker 20 through the third through hole 2104a and the fourth through hole 2104b. This prevents the gas diffused from the third and fourth through holes 2104a and 2104b from interfering with the gas diffused from the first and second through holes 225a and 225b. Consequently, the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 are less likely to cancel each other out with the sound waves generated by the first diaphragm 241 facing the first chamber 201, thus preventing an acoustic short circuit. Furthermore, the diffusion of the gas in the second chamber 202 to the top side of the speaker 20 through the third and fourth through holes 2104a and 2104b allows the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 and the sound waves generated by the side of the first diaphragm 241 facing away from the first chamber 201 to form a superimposed sound field on the top side of the speaker 20, thereby increasing the loudness of the speaker 20.

[0295] In some embodiments, the side portion 2832 of the housing 283 may be provided with a fifth through hole 2834 and a sixth through hole 2835 spaced apart, both of which can penetrate the side portion 2832 of the housing 283. The fifth through hole 2834 is at least partially opposite to and communicates with the first through hole 225a, so that the first chamber 201 can communicate with the outside of the speaker 20 through the fifth through hole 2834. The sixth through hole 2835 is at least partially opposite to and communicates with the second through hole 225b, so that the first chamber 201 can communicate with the outside of the speaker 20 through the sixth through hole 2835. It is understood that the first chamber 201 can communicate with the outside of the speaker 20 through the fifth through hole 2834 and the sixth through hole 2835, so that gas can circulate between the first chamber 201 and the atmosphere to balance the air pressure inside the first chamber 201.

[0296] In some examples, the fifth through-hole 2834 and the sixth through-hole 2835 of the housing 283 can be symmetrical about the central axis A1-A1 of the speaker 20. In this way, when the gas in the first chamber 201 is connected to the atmosphere through the fifth through-hole 2834 and the sixth through-hole 2835, the air pressure distribution in the first chamber 201 is more even, so the first diaphragm 241 is less likely to be polarized due to the air pressure imbalance in the first chamber 201, thus affecting the sound quality of the speaker 20.

[0297] In some examples, the center line connecting the fifth through hole 2834 and the sixth through hole 2835 can be perpendicular to the center line connecting the third through hole 2104a and the fourth through hole 2104b. For example, the fifth through hole 2834 and the sixth through hole 2835 can be located on the perpendicular bisector of the center line connecting the third through hole 2104a and the fourth through hole 2104b. In this way, the fifth through hole 2834 and the sixth through hole 2835 can be located away from the third through hole 2104a and the fourth through hole 2104b, which helps to extend the sound propagation path between the fifth through hole 2834 and the third through hole 2104a and the fourth through hole 2104b, as well as the sound propagation path between the sixth through hole 2835 and the third through hole 2104a and the fourth through hole 2104b. This avoids the sound waves transmitted from the fifth through hole 2834 and the sixth through hole 2835 canceling each other out with the sound waves transmitted from the third through hole 2104a and the fourth through hole 2104b, thus preventing an acoustic short circuit. Furthermore, the gap between the side portion 2832 of the housing 283 and the upper basin stand 21 is small, resulting in a large acoustic impedance. This prevents the sound waves transmitted from the first through hole 225a and the second through hole 225b, as well as the sound waves transmitted from the third through hole 2104a and the fourth through hole 2104b, from propagating through the gap between the side portion 2832 of the housing 283 and the upper basin stand 21 and canceling each other out.

[0298] Please refer to the following: Figure 34 and Figure 35 , Figure 35 yes Figure 21 The speaker 20 shown is a front view in some embodiments.

[0299] In this embodiment, the speaker 20 may have a connecting surface 204, which may be disposed facing away from the first chamber 201. Figure 35 The connecting surface 204 is schematically outlined with a dashed box. For example, along the axial direction of the speaker 20, the connecting surface 204 can be located on the side of the first through hole 225a and the second through hole 225b near the first diaphragm 241. That is, the connecting surface 204 can be located on the top side of the first through hole 225a and the second through hole 225b. It is understood that along the axial direction of the speaker 20, the connecting surface 204 is spaced apart from both the first through hole 225a and the second through hole 225b.

[0300] For example, a portion of the outer surface of the side portion 2832 of the housing 283 may form a connecting surface 204. It is understood that the outer surface of the side portion 2832 of the housing 283 may be the side surface of the side portion 2832 facing away from the first chamber 201.

[0301] In some embodiments, the distance between the first through hole 225a and the second through hole 225b and the first diaphragm 241 along the axial direction of the speaker 20 is in the range of 0.7 mm to 0.8 mm. In this way, the area of ​​the connecting surface 204 of the speaker 20 can be set to be larger, which facilitates the subsequent assembly of the speaker 20.

[0302] In this embodiment, the side portion 2832 of the housing 283 may also be provided with a clearance hole 2836, which can penetrate the side portion 2832 of the housing 283. The clearance hole 2836 can be used to avoid the first electrical connection component 291 and the second electrical connection component 292.

[0303] For example, both the first electrical connection component 291 and the second electrical connection component 292 are staggered from the first through hole 225a, the second through hole 225b, the third through hole 2104a, and the fourth through hole 2104b. For instance, the first electrical connection component 291 and the second electrical connection component 292 can be located between the first through hole 225a and the third through hole 2104a. It is understood that the first electrical connection component 291 and the second electrical connection component 292 are typically fixed to the flexible circuit board outside the speaker 20 by soldering followed by applying adhesive. By staggering the first electrical connection component 291 and the second electrical connection component 292 from the first through hole 225a, the second through hole 225b, the third through hole 2104a, and the fourth through hole 2104b, it is possible to avoid blocking the first through hole 225a, the second through hole 225b, the third through hole 2104a, or the fourth through hole 2104b during the adhesive application process, thereby affecting the diffusion of gas within the first chamber 201 and the second chamber 202.

[0304] Please see Figure 36 and Figure 37 , Figure 36 This is a comparison of the finite element model simulations of the loudspeaker 20 provided in this application embodiment and a single-diaphragm loudspeaker. Figure 1 , Figure 37 This is a comparison of the finite element model simulations of the loudspeaker 20 provided in this application embodiment and a single-diaphragm loudspeaker. Figure 2 For example, Figure 36 This mainly shows a comparison of the sound pressure level of the speaker 20 provided in the embodiments of this application and a single-diaphragm speaker at an operating voltage of 0.1V. Figure 37 This mainly shows a comparison of the sound pressure level of the speaker 20 provided in the embodiments of this application and a single-diaphragm speaker at maximum amplitude (operating voltage less than or equal to 1V), that is, a comparison of the maximum low-frequency output capability of the speaker 20 provided in the embodiments of this application and a single-diaphragm speaker. Figure 36 and Figure 37In the simulation graph shown, the horizontal axis represents the operating frequency (Hz), and the vertical axis represents decibels (dB). The solid line represents the simulation result of the loudspeaker 20 provided in this embodiment, and the dashed line represents the simulation result of a single-diaphragm loudspeaker.

[0305] It is understandable that the maximum low-frequency output capability of speaker 20 depends on the maximum displacement volume (Vdmax) of the diaphragm of speaker 20 in one direction. The maximum low-frequency output capability of speaker 20 is positively correlated with Vdmax; increasing Vdmax can improve the maximum low-frequency output capability of speaker 20, thereby improving the sound quality of speaker 20. And since Vdmax = Sd... As can be seen from Xmax, the maximum displacement volume (Vdmax) of the diaphragm of the speaker 20 in one direction is related to the effective radiation area (Sd) of the diaphragm and the maximum amplitude value (Xmax) of the diaphragm. By increasing Sd or Xmax, Vdmax can be increased, thereby improving the maximum low-frequency output capability of the speaker 20.

[0306] In some embodiments of this application, the opening 2410 of the speaker 20 can be formed by structural components of the speaker 20 itself, for example, as Figure 17A and Figure 17B As shown, the speaker 20 can form an opening 2410 on the first diaphragm 241, so that the setting of the opening 2410 does not affect the overall shape of the speaker 20. The size of the first diaphragm 241 can be large. For example, the diameter of the first diaphragm 241 can be the same as the diameter of the second diaphragm 242. Thus, the total area of ​​the first diaphragm 241 and the second diaphragm 242 can be large, that is, Sd can be large. Consequently, the Vdmax of the speaker 20 in this embodiment can be large, and the speaker 20 can have better low-frequency maximum output capability.

[0307] In other embodiments of this application, the third through hole 2104a and the fourth through hole 2104b of the speaker 20 can be formed by structural components of the speaker 20 itself, for example, as Figure 34As shown, the speaker 20 can utilize the difference in diameter between the first diaphragm 241 and the second diaphragm 242 to form a third through hole 2104a and a fourth through hole 2104b on the top of the upper frame 21. This allows the arrangement of the third through hole 2104a and the fourth through hole 2104b to not affect the overall shape of the speaker 20. The size of the first diaphragm 241 can be relatively large, for example, the size of the first diaphragm 241 can be close to the size of the second diaphragm 242 (taking the diameter of the second diaphragm 242 as an example of 12.4mm, the diameter of the first diaphragm 241 of the speaker 20 can be close to 12.4mm, for example, 11.4mm). As a result, the total area of ​​the first diaphragm 241 and the second diaphragm 242 can be relatively large, that is, Sd can be relatively large. Consequently, the Vdmax of the speaker 20 in this embodiment can be relatively large, and the speaker 20 can have better low-frequency maximum output capability.

[0308] exist Figure 36 and Figure 37 In the simulation diagram shown, the speaker 20 provided in this embodiment of the application has a first diaphragm 241 with a diameter of 11.4 mm and a second diaphragm 242 with a diameter of 12.4 mm as an example. A single-diaphragm speaker has a diaphragm diameter of 12.4 mm as an example. Compared to a single-diaphragm speaker, the speaker 20 provided in this embodiment of the application has improved loudness at maximum amplitude (operating voltage less than or equal to 1V), and the maximum low-frequency output capability of the speaker 20 is improved by approximately 5.2 dB.

[0309] It is understood that the loudspeaker 20 provided in this embodiment includes a first diaphragm 241 and a second diaphragm 242. The total area of ​​the first diaphragm 241 and the second diaphragm 242 can be relatively large, thereby increasing the sound radiation area of ​​the loudspeaker 20 and improving the maximum low-frequency output capability of the loudspeaker 20. Furthermore, the rear venting channel of the first diaphragm 241 (including the first through hole 225a and the second through hole 225b) and the sound outlet channel of the second diaphragm 242 can be integrated into the structure of the loudspeaker 20 itself, making the structure of the loudspeaker 20 simpler and facilitating its miniaturization.

[0310] The above description, in conjunction with the accompanying drawings, introduced the specific structure of the speaker 20. The following description, in conjunction with the accompanying drawings, will further introduce the electronic device 100 including the speaker 20.

[0311] Please refer to the following: Figure 38 and Figure 39 , Figure 38 yes Figure 1 The illustrated cross-sectional structural diagram of the electronic device 100 in some embodiments is shown. Figure 39 yes Figure 1 The illustrated electronic device 100 is a schematic cross-sectional view in some other embodiments. Exemplary, Figure 38The electronic device 100 shown may include the above. Figure 17B The speaker 20 shown. Figure 39 The electronic device 100 shown may include the above. Figure 34 The speaker 20 shown.

[0312] In some embodiments, the speaker 20 may be mounted on the housing 10 of the electronic device 100. For example, the housing 10 of the electronic device 100 may have an inner cavity 11, and the speaker 20 may be mounted on the inner cavity 11 of the housing 10. For instance, the electronic device 100 may be headphones, and the earpiece of the headphones may have an inner cavity, with the speaker 20 mounted on the inner cavity of the earpiece.

[0313] In some embodiments, the speaker 20 can be connected to the inner wall of the housing 10 of the electronic device 100 to separate the inner cavity 11 of the housing 10 into a front cavity 111 and a rear cavity 112, with the front cavity 111 and the rear cavity 112 spaced apart. Exemplarily, the connecting surface 204 of the speaker 20 can be fixedly connected to the inner wall of the housing 10, and a seal is formed between the connecting surface 204 and the inner wall of the housing 10. That is, the connecting surface 204 of the speaker 20 can be sealed to the inner wall of the housing 10. For example, the connecting surface 204 of the speaker 20 can be sealed to the inner wall of the housing 10 by means of adhesive or similar methods. In this way, the front cavity 111 and the rear cavity 112 of the electronic device 100 have good isolation, and the sound waves propagating to the front cavity 111 and the sound waves propagating to the rear cavity 112 are less likely to interfere with each other, thus preventing acoustic short circuits.

[0314] In this embodiment, the connecting surface 204 of the speaker 20 is relatively flat and has a large area, which is beneficial to improving the sealing between the speaker 20 and the housing 10 of the electronic device 100, and at the same time, it is beneficial to reduce the assembly process difficulty of the speaker 20.

[0315] In this embodiment, by setting the first through hole 225a and the second through hole 225b of the speaker 20 and the connecting surface 204 to be spaced apart in the axial direction of the speaker 20, it is possible to avoid blocking the first through hole 225a and the second through hole 225b during the bonding process between the connecting surface 204 of the speaker 20 and the inner wall of the housing 10, thereby affecting the diffusion of gas in the first chamber 201.

[0316] For example, the sound outlet 101 of the electronic device 100 can connect the front cavity 111 of the housing 10 with the outside of the housing 10, so that the gas in the front cavity 111 can flow to the outside of the electronic device 100 through the sound outlet 101.

[0317] Please see Figure 38 Exemplary Figure 38The direction of gas flow within the electronic device 100 is schematically indicated by dashed arrows. The front cavity 111 of the electronic device 100 can be located on the side of the first diaphragm 241 facing away from the first chamber 201. The opening 2410 of the speaker 20 can connect to the front cavity 111 of the housing 10, so that the second chamber 202 of the speaker 20 can connect to the front cavity 111 of the housing 10 through the third channel 2021 and the opening 2410, and the second chamber 202 can be spaced apart from the rear cavity 112 of the housing 10. In this way, the sound waves generated on the side of the second diaphragm 242 facing the second chamber 202 can be transmitted to the front cavity 111 of the electronic device 100 through the opening 2410, and then transmitted out of the electronic device 100 through the sound outlet 101 to be received by the user, and the sound waves generated on the side of the second diaphragm 242 facing the second chamber 202 will not be transmitted to the rear cavity 112 of the electronic device 100.

[0318] For example, the first through-hole 225a and the second through-hole 225b of the speaker 20 can connect to the rear cavity 112 of the housing 10, so that the first chamber 201 of the speaker 20 can connect to the rear cavity 112 of the housing 10 through the first through-hole 225a and the second through-hole 225b, and the first chamber 201 is spaced apart from the front cavity 111. In this way, the gas in the first chamber 201 of the speaker 20 can flow to the rear cavity 112 of the electronic device 100 through the first through-hole 225a and the second through-hole 225b, so that the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201 can be transmitted to the rear cavity 112 of the electronic device 100 through the first through-hole 225a and the second through-hole 225b, and the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201 will not be transmitted to the front cavity 111 of the electronic device 100.

[0319] In this embodiment, the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 can be diffused to the front cavity 111 of the outer shell 10 through the third channel 2021 and the opening 2410, and the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201 can be diffused to the rear cavity 112 of the outer shell 10 through the first through hole 225a and the second through hole 225b. In this way, the sound waves transmitted from the first through hole 225a and the second through hole 225b can be separated from the sound waves transmitted from the third through hole 2104a and the fourth through hole 2104b, thereby preventing the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 from canceling each other out and causing an acoustic short circuit.

[0320] Please refer to the following: Figure 39 and Figure 40 , Figure 40 yes Figure 39 A schematic diagram of a partial cross-sectional structure of the electronic device 100 shown at another angle. Exemplary, Figure 40The electronic device 100 shown may include the above. Figure 33 The speaker 20 shown. Figure 39 and Figure 40 The direction of gas flow inside the electronic device 100 is indicated by dashed arrows.

[0321] In this embodiment, the front cavity 111 of the electronic device 100 can be located on the side of the first diaphragm 241 facing away from the first chamber 201. The third through hole 2104a and the fourth through hole 2104b of the speaker 20 can connect to the front cavity 111 of the housing 10, so that the second chamber 202 of the speaker 20 can connect to the front cavity 111 of the housing 10 through the third through hole 2104a and the fourth through hole 2104b, and the second chamber 202 is spaced apart from the rear cavity 112 of the housing 10. In this way, the gas in the second chamber 202 of the speaker 20 can flow to the front cavity 111 of the electronic device 100 through the third through hole 2104a and the fourth through hole 2104b, so that the sound waves generated on the side of the second diaphragm 242 facing the second chamber 202 can be transmitted to the front cavity 111 of the electronic device 100 through the third through hole 2104a and the fourth through hole 2104b, and then transmitted out of the electronic device 100 from the sound outlet 101 for reception by the user.

[0322] For example, the first through-hole 225a and the second through-hole 225b of the speaker 20 can connect to the rear cavity 112 of the housing 10, so that the first chamber 201 of the speaker 20 can connect to the rear cavity 112 of the housing 10 through the first through-hole 225a and the second through-hole 225b, and the first chamber 201 is spaced apart from the front cavity 111 of the housing 10. In this way, the gas in the first chamber 201 of the speaker 20 can flow to the rear cavity 112 of the electronic device 100 through the first through-hole 225a and the second through-hole 225b, so that the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201 can be transmitted to the rear cavity 112 of the electronic device 100 through the first through-hole 225a and the second through-hole 225b.

[0323] In this embodiment, the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 can be diffused to the front cavity 111 of the outer shell 10 through the third through hole 2104a and the fourth through hole 2104b, and the sound waves generated by the side of the first diaphragm 241 facing the first chamber 201 can be diffused to the rear cavity 112 of the outer shell 10 through the first through hole 225a and the second through hole 225b. In this way, the sound waves transmitted from the first through hole 225a and the second through hole 225b can be separated from the sound waves transmitted from the third through hole 2104a and the fourth through hole 2104b, thereby preventing the sound waves generated by the side of the second diaphragm 242 facing the second chamber 202 from canceling each other out and causing an acoustic short circuit.

[0324] It is understood that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0325] The above are merely some embodiments of this application, and the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A loudspeaker (20), characterized in that, The device includes a frame (210), a magnetic circuit assembly (23), a first diaphragm (241), a second diaphragm (242), a first voice coil (251), and a second voice coil (252). The magnetic circuit assembly (23) is fixedly connected to the frame (210). The magnetic circuit assembly (23) has a first magnetic gap (20a) and a second magnetic gap (20b) spaced apart. The first diaphragm (241) is fixedly connected to the frame (210). One end of the first voice coil (251) is fixedly connected to the first diaphragm (241), and the other end of the first voice coil (251) is located in the first magnetic gap (20a). The second diaphragm (242) is fixedly connected to the frame (210). One end of the second voice coil (252) is fixedly connected to the second diaphragm (242), and the other end of the second voice coil (252) is located in the second magnetic gap (20b). The loudspeaker (20) further includes a first chamber (201) and a second chamber (202), wherein the enclosing portion of the first chamber (201) includes at least a portion of the magnetic circuit assembly (23), the first diaphragm (241), and a portion of the frame (210), the frame (210) including an upper frame (21) and a lower frame (22), and the enclosing portion of the second chamber (202) includes a portion of the magnetic circuit assembly (23), the second diaphragm (242), and the lower frame (22), and the second chamber (202) is not in communication with the first chamber (201); The loudspeaker (20) has an opening (2410), and the second fixing part (2415) of the first diaphragm (241) is arranged around the opening (2410). The loudspeaker (20) has a third channel (2021), which is not connected to the first chamber (201), and the second chamber (202) is connected to the opening (2410) through the third channel (2021). The basin frame (210) is provided with a first through hole (225a) and a second through hole (225b). The first through hole (225a) and the second through hole (225b) are both connected to the first chamber (201) and the outside of the speaker (20) through the first outer side (224) of the lower basin frame (22). The first through hole (225a) and the second through hole (225b) are symmetrical about the central axis (A1-A1) of the speaker (20). Projecting along the axial direction of the loudspeaker (20), on a plane perpendicular to the axial direction of the loudspeaker (20), the projection of the opening (2410) is located at the center of the line connecting the center of the first through hole (225a) and the center of the second through hole (225b).

2. The loudspeaker (20) according to claim 1, characterized in that, The magnetic circuit assembly (23) includes a central magnet (231) and a first magnetic conductor (233). The first magnetic conductor (233) includes a main body (2331) and a peripheral part (2332). The peripheral part (2332) is connected to the main body (2331) and is disposed around the main body (2331). The peripheral part (2332) has a first surface (2332A) and a second surface (2332B) disposed opposite to each other. The main body (2331) protrudes from the second surface (2332B) of the peripheral part (2332). The central magnet (231) is fixedly connected to the main body (2331), a portion of the main body (2331) surrounds the central magnet (231) and is spaced apart from the central magnet (231), and the gap between the main body (2331) and the central magnet (231) forms at least a portion of the first magnetic gap (20a); The upper basin frame (21) is fixedly connected to the first diaphragm (241) and the first surface (2332A) of the peripheral portion (2332), and the lower basin frame (22) is fixedly connected to the second surface (2332B) of the peripheral portion (2332). The central magnet (231), the first magnetic conductor (233), the first diaphragm (241) and the upper basin frame (21) together enclose the first chamber (201). The first through hole (225a) and the second through hole (225b) are located on the lower basin frame (22). The first magnetic conductor (233) is provided with a first connecting hole (2334a) and a second connecting hole (2334b). The first connecting hole (2334a) connects the first through hole (225a) and the first chamber (201), and the second connecting hole (2334b) connects the second through hole (225b) and the first chamber (201).

3. The loudspeaker (20) according to claim 2, characterized in that, The first connecting hole (2334a) and the second connecting hole (2334b) are symmetrical about the central axis (A1-A1) of the loudspeaker (20).

4. The loudspeaker (20) according to claim 2, characterized in that, The lower basin stand (22) further includes a first top surface (221) and a first bottom surface (222). The first outer side surface (224) of the lower basin stand (22) is connected between the first top surface (221) and the first bottom surface (222). The first top surface (221) and the first bottom surface (222) are arranged facing away from each other. The first outer surface (224) faces away from the central magnet (231), and the first top surface (221) is fixedly connected to the second surface (2332B) of the peripheral portion (2332). The opening of the first through hole (225a) is located on the first top surface (221) and extends to the first outer surface (224).

5. The loudspeaker (20) according to claim 4, characterized in that, The first through hole (225a) includes a first inner wall (2251a), which is disposed opposite to the first connecting hole (2334a); Along the direction from the first outer side surface (224) toward the central axis (A1-A1) of the loudspeaker (20), the first inner wall (2251a) is close to the periphery (2332) of the first magnetic conductor (233).

6. The loudspeaker (20) according to claim 5, characterized in that, The first through hole (225a) further includes a second inner wall (2252a), which is connected between the first inner wall (2251a) and the first top surface (221), and the second inner wall (2252a) and the first inner wall (2251a) are set at an obtuse angle; The second inner wall (2252a) is disposed opposite to the central magnet (231). The second inner wall (2252a), the first inner wall (2251a), and the second surface (2332B) of the peripheral portion (2332) together form a buffer space (2253), which is connected to the first connecting hole (2334a).

7. The loudspeaker (20) according to any one of claims 2 to 6, characterized in that, The loudspeaker (20) further includes a first damping element (271), which is disposed on the first magnetic conductor (233) and covers the first connecting hole (2334a). And / or, The loudspeaker (20) further includes a second damping element (272), which is disposed on the first magnetic conductor (233) and covers the second connecting hole (2334b).

8. The loudspeaker (20) according to any one of claims 2 to 6, characterized in that, The second diaphragm (242) is fixed to the side of the lower frame (22) facing away from the first diaphragm (241); The first magnetic conductor (233), the second diaphragm (242) and the lower frame (22) together enclose the second chamber (202), which is spaced apart from the first chamber (201).

9. The loudspeaker (20) according to claim 8, characterized in that, The loudspeaker (20) also includes a bracket (260), which is located between the first diaphragm (241) and the central magnet (231) and is fixedly connected to the first diaphragm (241) and the central magnet (231). The bracket (260) is provided with a third through hole (2601), which is opposite to and communicates with the opening (2410). The first magnetic conductor (233) is provided with a first through hole (2337), and the central magnet (231) is provided with a second through hole (2311). The first through hole (2337), the second through hole (2311) and the third through hole (2601) are opposite to each other and connected. The first through hole (2337), the second through hole (2311) and the third through hole (2601) are all part of the third channel (2021).

10. The loudspeaker (20) according to claim 9, characterized in that, The magnetic circuit assembly (23) further includes a second magnetic conductor (234), which is located between the central magnet (231) and the bracket (260) and is fixedly connected to the central magnet (231) and the bracket (260). The second magnetic conductive element (234) is provided with a fourth through hole (2342), which is opposite to and connected to the second through hole (2311) and the third through hole (2601), and the fourth through hole (2342) is part of the third channel (2021).

11. The loudspeaker (20) according to claim 9, characterized in that, The loudspeaker (20) further includes a second connector (262), which is located between the bracket (260) and the first diaphragm (241) and is fixedly connected to the bracket (260) and the first diaphragm (241). The second connector (262) is provided with a fifth through hole (2621), which is opposite to and connected to the third through hole (2601) and the opening (2410), and the fifth through hole (2621) is part of the third channel (2021).

12. The loudspeaker (20) according to claim 9, characterized in that, The first diaphragm (241) further includes a vibrating part (2411), a first folded ring part (2412), a second folded ring part (2413), and a first fixing part (2414). The second folded ring part (2413) surrounds the outer periphery of the second fixing part (2415) and is connected to the second fixing part (2415). The vibrating part (2411) surrounds the outer periphery of the second folded ring part (2413) and is connected to the second folded ring part (2413). The first folded ring part (2412) surrounds the outer periphery of the vibrating part (2411) and is connected to the vibrating part (2411). The first fixing part (2414) surrounds the outer periphery of the first folded ring part (2412) and is connected to the first folded ring part (2412). The first fixing part (2414) is fixedly connected to the upper basin frame (21), the second fixing part (2415) is fixedly connected to the bracket (260), and the vibrating part (2411) is connected to one end of the first voice coil (251).

13. The loudspeaker (20) according to any one of claims 1 to 6, characterized in that, The loudspeaker (20) also includes a third damping element (273), which is disposed on the first diaphragm (241) and covers the opening (2410).

14. The loudspeaker according to any one of claims 1 to 6, characterized in that, The frequency bands corresponding to the maximum amplitude of the first diaphragm (241) and the second diaphragm (242) include 100Hz-1000Hz.

15. The loudspeaker according to any one of claims 1 to 6, characterized in that, The diameter of the first diaphragm (241) is the same as the diameter of the second diaphragm (242).

16. An electronic device (100), characterized in that, It includes a housing (10) and a speaker (20) as claimed in any one of claims 1 to 15, the speaker (20) being mounted on the housing (10).

17. The electronic device (100) according to claim 16, characterized in that, The outer shell (10) has an inner cavity (11), and the speaker (20) is connected to the inner wall of the outer shell (10) to separate the inner cavity (11) into a front cavity (111) and a rear cavity (112). The front cavity (111) and the rear cavity (112) are spaced apart. The rear cavity (112) is connected to the first through hole (225a) and the second through hole (225b). The front cavity (111) is located on the side of the first diaphragm (241) facing away from the first chamber (201). The outer shell (10) is provided with a sound outlet (101), which connects the front cavity (111) with the outside of the outer shell (10).

18. The electronic device (100) according to claim 16, characterized in that, The loudspeaker (20) has a connecting surface (204) which is disposed away from the first chamber (201). Along the axial direction of the loudspeaker (20), the connecting surface (204) is located on the side of the first through hole (225a) and the second through hole (225b) close to the first diaphragm (241). The connecting surface (204) is sealed to the inner wall of the outer shell (10).

19. The electronic device (100) according to claim 18, characterized in that, Along the axial direction of the loudspeaker (20), the first through hole (225a) and the second through hole (225b) are spaced apart from the connecting surface (204).

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