Speaker and electronic device

Abstract

The present application relates to the technical field of audio, and relates in particular to a speaker and an electronic device. The speaker comprises a housing, a first vibration assembly, a second vibration assembly, a first magnetic circuit assembly, and a second magnetic circuit assembly. The housing comprises a basket and a support member. One end of a first voice coil of the first vibration assembly is fixedly connected to a first diaphragm, and the other end of the first voice coil is located in a magnetic gap of the first magnetic circuit assembly. One end of a second voice coil of the first vibration assembly is fixedly connected to the first diaphragm, and the other end of the second voice coil is located in a magnetic gap of the second magnetic circuit assembly. One end of a third voice coil of the second vibration assembly is fixedly connected to a second diaphragm, and the other end of the third voice coil is located in the magnetic gap of the first magnetic circuit assembly. One end of a fourth voice coil of the second vibration assembly is fixedly connected to the second diaphragm, and the other end of the fourth voice coil is located in the magnetic gap of the second magnetic circuit assembly. The present embodiment enables the speaker to have a rational and compact structure and a relatively large vibration area and vibration height, thereby improving the sound quality of the speaker, enhancing the manufacturability of the speaker, and simplifying fabrication.

Description

A loudspeaker and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202411140878.5, filed on August 16, 2024, and entitled "A loudspeaker and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of audio technology, and in particular to a loudspeaker and electronic device. BACKGROUND

[0003] In an open acoustic design, the improvement of the low-frequency sound quality of the loudspeaker generally requires the diaphragm of the loudspeaker to have a larger maximum linear displacement volume (Vd), but a larger Vd will directly occupy the volume of the loudspeaker, and the improvement of the low-frequency sound quality of the loudspeaker is generally limited and difficult to achieve.

[0004] However, the shape of the loudspeaker installed in some electronic devices is limited due to the limited shape or installation space of the electronic devices. For example, for glasses, the loudspeaker size is required to have a large aspect ratio, at this time, the loudspeaker voice coil and other components are difficult to process, and the improvement of the sound quality of the loudspeaker is further increased in difficulty. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a loudspeaker and electronic device.

[0006] In a first aspect, the embodiments of the present application provide a loudspeaker, comprising a shell, a first vibration assembly, a second vibration assembly, a first magnetic circuit assembly and a second magnetic circuit assembly; the shell comprises a basket and a support, the support is fixed to the inner side of the basket, and the first magnetic circuit assembly and the second magnetic circuit assembly are fixed to the support at intervals; the first vibration assembly comprises a first diaphragm, a first voice coil and a second voice coil, the first diaphragm is fixed to the shell and located on one side of the support, one end of the first voice coil is fixedly connected to the first diaphragm, and the other end is located in the magnetic gap of the first magnetic circuit assembly, one end of the second voice coil is fixedly connected to the first diaphragm, and the other end is located in the magnetic gap of the second magnetic circuit assembly; the second vibration assembly comprises a second diaphragm, a third voice coil and a fourth voice coil, the second diaphragm is fixed to the shell and located on the other side of the support, one end of the third voice coil is fixedly connected to the second diaphragm, and the other end is located in the magnetic gap of the first magnetic circuit assembly, one end of the fourth voice coil is fixedly connected to the second diaphragm, and the other end is located in the magnetic gap of the second magnetic circuit assembly.

[0007] Exemplarily, the shell can be substantially frame-shaped, for example, the shell can be a rectangular frame, a middle part of the shell is hollowed out, an inner side of the shell can form a mounting cavity, and the mounting cavity can mount components of the loudspeaker. The inner side of the basin frame can refer to an inner side of a space occupied by the basin frame, that is, the support can be located in an inner space of the basin frame in a large part and can be partially embedded in the basin frame.

[0008] In the embodiment, for the first vibration assembly, the first voice coil and the second voice coil are fixedly connected with the first diaphragm, and the first voice coil and the second voice coil can synchronously drive the first diaphragm. At this time, the shape of the first diaphragm has less restriction on the shape of the first voice coil and the second voice coil, the first voice coil and the second voice coil can be respectively formed by winding, and the aspect ratio of the first voice coil and the second voice coil can be reasonably wound according to requirements, so that the winding of the first voice coil and the second voice coil is simpler. In addition, the first voice coil is driven by the first magnetic circuit assembly, and the second voice coil is driven by the second magnetic circuit assembly, that is, the first voice coil and the second voice coil are respectively driven by different magnetic circuit assemblies, which is beneficial to improve the driving force on the first voice coil and the second voice coil, thereby facilitating the driving of the first diaphragm and being beneficial to improve the sound quality.

[0009] Similarly, for the second vibration assembly, the third voice coil and the fourth voice coil are fixedly connected with the second diaphragm, and the third voice coil and the fourth voice coil can synchronously drive the second diaphragm. At this time, the shape of the second diaphragm has less restriction on the shape of the third voice coil and the fourth voice coil, the third voice coil and the fourth voice coil can be respectively formed by winding, and the aspect ratio of the third voice coil and the fourth voice coil can be reasonably wound according to requirements, so that the winding of the third voice coil and the fourth voice coil is simpler. In addition, the third voice coil is driven by the first magnetic circuit assembly, and the fourth voice coil is driven by the second magnetic circuit assembly, that is, the third voice coil and the fourth voice coil are respectively driven by different magnetic circuit assemblies, which is beneficial to improve the driving force on the third voice coil and the fourth voice coil, thereby facilitating the driving of the second diaphragm and being beneficial to improve the sound quality.

[0010] The first vibration assembly and the second vibration assembly are respectively located on two sides of the support, so that the arrangement of each component of the loudspeaker is more reasonable, and the space is maximized.

[0011] In addition, the first diaphragm and the second diaphragm can vibrate, and the cooperation of the first diaphragm and the second diaphragm can make the loudspeaker have better low-frequency loudness, thereby improving the sound quality of the loudspeaker.

[0012] In addition, the first voice coil and the third voice coil are driven by the first magnetic circuit assembly, and the second voice coil and the fourth voice coil are driven by the second magnetic circuit assembly, which is equivalent to multiplexing the first magnetic circuit assembly and the second magnetic circuit assembly, thereby reducing the number of components of the loudspeaker and saving the space inside the shell, which is beneficial to improve the vibration space of the first diaphragm and the second diaphragm, thereby being beneficial to improve the sound quality of the loudspeaker.

[0013] The embodiment sets the relationship among the shell, the first vibration assembly, the second vibration assembly, the first magnetic circuit assembly and the second magnetic circuit assembly reasonably, so that the structure of the loudspeaker is more reasonable and compact, the loudspeaker has a large vibration area and vibration height, thereby the sound quality of the loudspeaker is improved, and the loudspeaker has good processability and is simple to manufacture.

[0014] In some embodiments, the first magnetic circuit assembly includes a first center magnet and a first edge magnet, the first edge magnet is located at the periphery of the first center magnet and forms a magnetic gap; the second magnetic circuit assembly includes a second center magnet and a second edge magnet, the second edge magnet is located at the periphery of the second center magnet and forms a magnetic gap; the support includes a first support portion, a connecting portion and a second support portion connected in sequence, the first support portion and the second support portion are respectively arranged recessed towards the second diaphragm, and the first support portion, the connecting portion and the second support portion form an avoiding space therebetween; the first center magnet is installed on the first support portion, and the second center magnet is installed on the second support portion; the third voice coil surrounds the first support portion, and the fourth voice coil surrounds the second support portion, and part of the third voice coil and part of the fourth voice coil are located in the avoiding space; the first voice coil and the second voice coil are respectively located on both sides of the avoiding space.

[0015] In the embodiment, by setting the structure of the first support portion, the second support portion and the connecting portion, the first support portion fixes the first center magnet, and the second support portion fixes the second center magnet; the first voice coil and the third voice coil surround the first center magnet, the connecting portion avoids the third voice coil, which is equivalent to reusing the first magnetic circuit assembly; and the second voice coil and the fourth voice coil surround the second center magnet, and the connecting portion avoids the fourth voice coil, which is equivalent to reusing the second magnetic circuit assembly.

[0016] Since the first magnetic circuit assembly and the second magnetic circuit assembly are reused, the number of magnetic components can be reduced, the number of parts is reduced, and the space in the thickness direction of the loudspeaker can be fully utilized, which is beneficial to improving the vibration distance of the first diaphragm and the second diaphragm and thereby improving the sound quality of the loudspeaker; or is beneficial to reducing the thickness of the loudspeaker, thereby facilitating the thinning of the loudspeaker. In addition, the first support portion has an isolation effect on the first voice coil and the third voice coil, avoiding collision between the first voice coil and the third voice coil, and the second support portion has an isolation effect on the second voice coil and the fourth voice coil, avoiding collision between the second voice coil and the fourth voice coil, thereby improving the reliability of the loudspeaker.

[0017] In some embodiments, the support further comprises a first fixing part and a second fixing part, the first fixing part is connected to the first support part, and the second fixing part is connected to the second support part; the first fixing part and the second fixing part are fixedly connected to the yoke; the first edge magnet part is mounted on the surface of the first fixing part facing the second diaphragm, and the first center magnet is mounted on the surface of the first support part facing the first diaphragm; the second edge magnet part is mounted on the surface of the second fixing part facing the second diaphragm, and the first center magnet is mounted on the surface of the second support part facing the first diaphragm; the support can conduct magnetism.

[0018] In the present embodiment, the first fixing part and the second fixing part are used to connect the first support part and the second support part to the yoke, thereby playing a role of fixing the first fixing part and the second fixing part; in addition, since the inside of the yoke has a large space, the support is beneficial to strengthening the structural strength of the yoke at this time, and deformation of the support under stress in the arrangement direction of the first fixing part and the second fixing part is avoided.

[0019] In addition, the support corresponds to spanning from the bottom side of the first center magnet to the top side of the first edge magnet, and since the support can conduct magnetism, the support is beneficial to the formation of the magnetic circuit of the first magnetic circuit assembly.

[0020] In some embodiments, the support comprises a support plate and a ring-shaped plate, the support plate and the ring-shaped plate are arranged in a spaced manner, the first fixing part, the first support part, the connecting part, the second support part, and the second fixing part are formed on the support plate, and the first edge magnet and the second edge magnet are fixedly arranged on the surface of the ring-shaped plate facing the second diaphragm.

[0021] In the present embodiment, the support is formed in a split manner by the support plate and the ring-shaped plate, which is beneficial to separately manufacturing the support plate and the ring-shaped plate. In addition, the support plate and the ring-shaped plate are formed in a split manner, which can make the support plate have a wider width in the width direction, and the support plate has better support capability, thereby more reliably supporting the first magnetic circuit assembly and the second magnetic circuit assembly. That is, the present embodiment can facilitate the support plate to have a reasonable structure, so that the support plate has better processability, support capability, and magnetism-conducting capability.

[0022] In some embodiments, the support plate is an integrally formed structural member; and / or, the support plate is fixed to the yoke and is an integral structural member with the yoke.

[0023] For example, the support can be formed by bending or stamping a plate material. At this time, the support plate has good support performance such as rigidity and strength, and has good magnetism-conducting performance.

[0024] Exemplarily, the support plate can be integrally formed with the basin frame by injection molding. At this time, the support plate is reliably connected with the basin frame, the overall strength of the structural member is high, deformation is not easy to occur, and the first magnetic circuit assembly, the second magnetic circuit assembly, the first vibration assembly and the second vibration assembly all have good support ability, so as to ensure that the loudspeaker has good and stable sound quality.

[0025] In some embodiments, the shell further comprises a magnetic conducting member fixed to the basin frame, the magnetic conducting member being located between the first magnetic circuit assembly and the second diaphragm, and the first side magnet and the second side magnet being respectively fixed to the surface of the magnetic conducting member facing the first diaphragm.

[0026] Exemplarily, the magnetic conducting member can be made of a magnetic conducting material. Exemplarily, the size and shape of the magnetic conducting member can be substantially consistent with those of the annular plate.

[0027] In the embodiment, since the magnetic conducting member is located on the side of the first magnetic circuit assembly facing the second diaphragm, the third voice coil is closer to the magnetic conducting member, so that the first magnetic circuit assembly is more easily to drive the third voice coil. At this time, the first side magnet is equivalent to being located between the annular plate and the magnetic conducting member, and the annular plate and the magnetic conducting member respectively fix the first side magnet, so that the fixation of the first side magnet is more reliable, and the annular plate and the magnetic conducting member respectively conduct the two magnetic poles of the first side magnet.

[0028] Since the magnetic conducting member is located on the side of the second magnetic circuit assembly facing the second diaphragm, the fourth voice coil is closer to the magnetic conducting member, so that the second magnetic circuit assembly is more easily to drive the fourth voice coil. At this time, the second side magnet is equivalent to being located between the annular plate and the magnetic conducting member, and the annular plate and the magnetic conducting member respectively fix the second side magnet, so that the fixation of the second side magnet is more reliable, and the annular plate and the magnetic conducting member respectively conduct the two magnetic poles of the second side magnet.

[0029] In some embodiments, the connecting portion has a first end and a second end, the first end and the second end are arranged along a first direction, the first direction is perpendicular to the arrangement direction of the first diaphragm and the second diaphragm, and is perpendicular to the arrangement direction of the first support portion and the second support portion.

[0030] The first end and the second end respectively abut the two opposite side walls of the shell in the first direction; or the first end and the second end are respectively fixedly connected to the two opposite side walls of the shell in the first direction.

[0031] Exemplarily, the first end and the second end of the connecting portion can be embedded in the side wall of the basin frame.

[0032] In the embodiment, by arranging the first end and the second end of the connecting portion and making the first end and the second end respectively fixedly connected with the basin frame, the two opposite side walls of the basin frame are supported in the first direction, so that the basin frame is not easy to deform, and the basin frame has higher reliability, thereby ensuring the sound quality of the loudspeaker.

[0033] In addition, when the first end and the second end are not fixedly connected with the side wall of the basin frame, the first end and the second end of the connecting portion can be abutted against the basin frame of the shell by assembling the basin frame and the support, at this time, the basin frame and the support are easy to assemble, thereby being beneficial to reduce the cost.

[0034] In some embodiments, the basin frame comprises a first frame body and a second frame body, the first frame body and the second frame body are fixedly connected, the first diaphragm is fixed to the first frame body, and the second diaphragm is fixed to the second frame body; the first end and the second end are fixed to the first frame body.

[0035] The first frame body has a positioning portion on each of the two wall plates opposite in the first direction, and the positioning portion protrudes towards the second diaphragm; the second frame body has a clamping portion on each of the two wall plates opposite in the first direction, and the positioning portion is located between the clamping portions in the first direction, and the positioning portion abuts against the clamping portions.

[0036] For example, the first frame body can be substantially a rectangular frame structure. The first frame body can comprise four wall plates connected in sequence, the four wall plates are fixedly connected and surround an installation space, and the installation space can be used to install the first vibration assembly.

[0037] For example, the second frame body can be substantially a rectangular frame structure. The second frame body can comprise four wall plates connected in sequence, the four wall plates are fixedly connected and surround an installation space, and the installation space can be used to install the first vibration assembly.

[0038] In the embodiment, the first frame body and the second frame body are separately provided and form the basin frame, thereby facilitating the manufacturing and assembly of the basin frame.

[0039] The connecting portion can support the first frame body in the first direction (width direction) to avoid deformation of the first frame body, and by providing the positioning portion and the clamping portion, the second frame body can be supported by the first frame body in the first direction, thereby avoiding deformation of the second frame body, making the support of other components by the shell more reliable, and making the sound quality of the loudspeaker more stable.

[0040] In some embodiments, a magnetic gap is formed between the first center magnet and the second center magnet, and the first voice coil, the second voice coil, the third voice coil and the fourth voice coil are respectively partially located between the first center magnet and the second center magnet.

[0041] For example, there can be no other magnets between the first center magnet and the second center magnet, and the first center magnet and the second center magnet are adjacent and close.

[0042] In the embodiment, the first voice coil and the second voice coil are close to each other, and the distance between the first voice coil and the second voice coil is small. Therefore, the contact area of the first voice coil and the second voice coil with the first diaphragm is large, and the area of the middle part of the first diaphragm that is not subjected to force is small when the first diaphragm is driven by the first voice coil and the second voice coil. Therefore, the possibility of the middle part of the first diaphragm being deformed is small. In this case, the moment of inertia of the first vibration assembly is large, the vibration performance of the first vibration assembly is better, and the sound quality of the first vibration assembly is better.

[0043] Similarly, the distance between the third voice coil and the fourth voice coil is small, and the contact area of the third voice coil and the fourth voice coil with the second diaphragm is large. When the second diaphragm is driven by the third voice coil and the fourth voice coil, the area of the middle part of the second diaphragm that is not subjected to force is small, and the possibility of the middle part of the second diaphragm being deformed is small. In this case, the moment of inertia of the second vibration assembly is large, the vibration performance of the second vibration assembly is better, and the sound quality of the second vibration assembly is better.

[0044] In some embodiments, the distance between the first central magnet and the second central magnet is less than 4 mm, and the distance between the third voice coil and the fourth voice coil is less than 2 mm.

[0045] In some embodiments, the distance between the first central magnet and the second central magnet is greater than 1.6 mm, so as to accommodate other structures.

[0046] For example, the distance between the first central magnet and the second central magnet can be 3 mm, 3.5 mm, 4 mm, or the like.

[0047] In some embodiments, the distance between the third voice coil and the fourth voice coil is greater than 0.1 mm, so as to facilitate the installation of the third voice coil and the fourth voice coil.

[0048] For example, the distance between the third voice coil and the fourth voice coil can be 1.5 mm.

[0049] In the embodiment, the first central magnet and the second central magnet are close to each other, and the internal space of the loudspeaker is utilized more fully. The third voice coil and the fourth voice coil are almost attached, which is beneficial to improve the moment of inertia of the second vibration assembly, thereby improving the sound quality of the loudspeaker.

[0050] In some embodiments, in the arrangement direction of the first diaphragm and the second diaphragm, the projection of the third voice coil surrounds the projection of the first voice coil, and the projection of the fourth voice coil surrounds the projection of the second voice coil. The vibration height of the first voice coil at least partially overlaps the vibration height of the third voice coil, and the vibration height of the second voice coil at least partially overlaps the vibration height of the fourth voice coil.

[0051] For example, the arrangement direction of the first diaphragm and the second diaphragm can be parallel to the thickness direction of the loudspeaker.

[0052] Exemplarily, in the thickness direction, the highest point of the movement of the one end of the third voice coil away from the second diaphragm can be higher than the highest point of the movement of the one end of the first voice coil away from the first diaphragm, and the highest point of the movement of the one end of the fourth voice coil away from the second diaphragm can be higher than the highest point of the movement of the one end of the second voice coil away from the first diaphragm.

[0053] When the first diaphragm and the second diaphragm are not vibrating, the one end of the first voice coil away from the first diaphragm can be higher than the one end of the third voice coil away from the second diaphragm, and the one end of the second voice coil away from the first diaphragm can be higher than the one end of the fourth voice coil away from the second diaphragm.

[0054] In the embodiment, the third voice coil is equivalent to being sleeved outside the first voice coil, so that both of them are arranged in the magnetic gap of the first magnetic circuit assembly, and the fourth voice coil is equivalent to being sleeved outside the second voice coil, so that both of them are arranged in the magnetic gap of the second magnetic circuit assembly. Moreover, the third voice coil and the first voice coil multiplex the vibration space, and the fourth voice coil and the second voice coil multiplex the vibration space, so as to facilitate the first voice coil, the second voice coil, the third voice coil and the fourth voice coil to have a larger vibration distance in a limited height, thereby improving the low-frequency sound quality of the loudspeaker.

[0055] In some embodiments, the length direction of the first voice coil and the length direction of the second voice coil are respectively parallel to the length direction of the loudspeaker, and the arrangement direction of the first voice coil and the second voice coil is parallel to the length direction of the loudspeaker.

[0056] The length direction of the third voice coil and the length direction of the fourth voice coil are respectively parallel to the length direction of the loudspeaker, and the arrangement direction of the third voice coil and the fourth voice coil is parallel to the length direction of the loudspeaker.

[0057] Exemplarily, the aspect ratio of the loudspeaker can be greater than 4:1, such as 28:7, 30:7, 35:8, etc.

[0058] Exemplarily, the aspect ratio of the first voice coil, the second voice coil, the third voice coil and / or the fourth voice coil is less than 6:1, so as to facilitate winding.

[0059] In the embodiment, the arrangement direction of the first voice coil and the second voice coil, and the arrangement direction of both of them are more suitable for the length direction of the loudspeaker, so as to facilitate the first diaphragm to be driven by a proper number of voice coils, and simplify the structure of the loudspeaker; and facilitate the aspect ratio of the first voice coil and the second voice coil to be smaller, so as to facilitate the winding of the first voice coil and the second voice coil, thereby facilitating the manufacturing of the loudspeaker. Similarly, the arrangement direction of the third voice coil and the fourth voice coil, and the arrangement direction of both of them are also more suitable for the length direction of the loudspeaker, which can simplify the structure of the loudspeaker and facilitate the manufacturing of the loudspeaker.

[0060] In some embodiments, the loudspeaker has a fixing member that fixedly connects the side wall of the third voice coil opposite to the fourth voice coil.

[0061] For example, the fixing member can be mounted on the end surface of the third voice coil and the fourth voice coil away from the second diaphragm.

[0062] In this embodiment, the third voice coil and the fourth voice coil are fixedly connected by the fixing member, so that the third voice coil and the fourth voice coil are kept relatively fixed, thereby increasing the moment of inertia of the second vibration assembly, reducing the deformation of the vibration part of the second diaphragm, and being conducive to improving the sound quality of the second diaphragm vibration sound; in addition, the third voice coil and the fourth voice coil are relatively fixed and can vibrate synchronously, which is conducive to improving the sound quality of the second diaphragm vibration sound, and the two will not be deflected, which can avoid collision with the first magnetic circuit assembly and the second magnetic circuit assembly, and is conducive to improving the stability of the loudspeaker.

[0063] In some embodiments, in the arrangement direction of the first diaphragm and the second diaphragm, the distance between the fixing member and the end of the third voice coil connected to the first diaphragm is a first size, and the distance between the fixing member and the end of the third voice coil away from the first diaphragm is a second size, both the first size and the second size are greater than 1mm.

[0064] In this embodiment, the installation of the fixing member does not increase the thickness dimension of the second vibration assembly, and the fixing member has a spacing with both ends of the third voice coil and both ends of the fourth voice coil, thereby facilitating the installation of the fixing member.

[0065] In some embodiments, the fixing member is provided with a through hole, and in the arrangement direction of the first diaphragm and the second diaphragm, the area of the through hole is greater than half of the area of the fixing member.

[0066] In this embodiment, by providing the through hole, the material of the fixing member can be removed, thereby reducing the weight of the fixing member. The side wall of the through hole can form a connecting rib or a supporting rib of the fixing member, so that the fixing member has a lower weight and better supporting capacity.

[0067] In some embodiments, the fixing member can be a circuit board, and the fixing member is electrically connected to the third voice coil and the fourth voice coil.

[0068] In this embodiment, the fixing member can not only have the function of fixing the third voice coil and the fourth voice coil, but also have the function of electrically connecting the third voice coil and the fourth voice coil, which is conducive to reducing the number of parts of the second vibration assembly.

[0069] In some embodiments, the fixing member is a colloid.

[0070] In this embodiment, by setting the fixing member as a colloid, the fixing member can be formed during the assembly of the second vibration assembly, which is conducive to reducing the number of parts of the second vibration assembly and saving material cost.

[0071] In some embodiments, the first vibration assembly further comprises a first reinforcing sheet fixed to a side of the first diaphragm facing the second diaphragm, the first reinforcing sheet corresponding to a space between the first voice coil and the second voice coil, and a length of the first reinforcing sheet being greater than a distance between the first voice coil and the second voice coil in an arrangement direction of the first voice coil and the second voice coil.

[0072] And / or, the second vibration assembly further comprises a second reinforcing sheet fixed to a side of the second diaphragm facing the first diaphragm, the second reinforcing sheet corresponding to a space between the third voice coil and the fourth voice coil, and a length of the second reinforcing sheet being greater than a distance between the third voice coil and the fourth voice coil in an arrangement direction of the third voice coil and the fourth voice coil.

[0073] In the present embodiment, the first reinforcing sheet is arranged to reinforce the stiffness of the position where the first diaphragm connects the first voice coil and the second voice coil, thereby improving the moment of inertia of the first vibration assembly, avoiding the bending of the first diaphragm when vibrating, and improving the sound quality of the loudspeaker when the first diaphragm pushes the air to vibrate and make sound. In addition, avoiding the bending of the first diaphragm can also avoid the deflection of the first voice coil and the second voice coil, thereby avoiding the collision between the first voice coil and the first magnetic circuit assembly and between the second voice coil and the second magnetic circuit assembly, and improving the reliability of the loudspeaker.

[0074] The second reinforcing sheet is arranged to reinforce the stiffness of the position where the second diaphragm connects the third voice coil and the fourth voice coil, thereby improving the moment of inertia of the second vibration assembly, avoiding the bending of the second diaphragm, and improving the sound quality of the loudspeaker when the second diaphragm pushes the air to vibrate and make sound. In addition, avoiding the bending of the second diaphragm can also avoid the deflection of the third voice coil and the fourth voice coil, thereby avoiding the collision between the third voice coil and the first magnetic circuit assembly and between the fourth voice coil and the second magnetic circuit assembly, and improving the reliability of the loudspeaker. The shape and size of the second reinforcing sheet are easy to set, and the moment of inertia of the second vibration assembly can be increased without significantly affecting the mass of the second vibration assembly.

[0075] In some embodiments, the first vibration assembly further comprises a first centering sheet, one side of the first centering sheet being fixedly connected to the first diaphragm, the other side being fixedly connected to the first voice coil and the second voice coil, and the first centering sheet being electrically connected to the first voice coil and the second voice coil.

[0076] And / or, the second vibration assembly further comprises a second centering sheet, one side of the second centering sheet being fixedly connected to the second diaphragm, the other side being fixedly connected to the third voice coil and the fourth voice coil, and the second centering sheet being electrically connected to the third voice coil and the fourth voice coil.

[0077] In this embodiment, the first voice coil and the second voice coil can be fixedly connected to the first diaphragm through the first centering spider to better meet the position arrangement requirements of the first voice coil and the second voice coil. The third voice coil and the fourth voice coil can be fixedly connected to the second diaphragm through the second centering spider to better meet the position arrangement requirements of the third voice coil and the fourth voice coil.

[0078] In some embodiments, the loudspeaker further comprises a third magnetic circuit assembly, the first vibration assembly further comprises a fifth voice coil, the second vibration assembly further comprises a sixth voice coil, the third magnetic circuit assembly is fixed to the support, one end of the fifth voice coil is fixedly connected to the first diaphragm, and the other end is located in a magnetic gap of the third magnetic circuit assembly, one end of the sixth voice coil is fixedly connected to the second diaphragm, and the other end is located in the magnetic gap of the third magnetic circuit assembly.

[0079] In this embodiment, the fifth voice coil and the sixth voice coil are located in the magnetic gap of the third magnetic circuit assembly, which is equivalent to multiplexing the third magnetic circuit assembly. Moreover, the first diaphragm is driven by the first voice coil, the second voice coil, and the fifth voice coil; and the second diaphragm is driven by the third voice coil, the fourth voice coil, and the sixth voice coil, which is conducive to setting a loudspeaker with a larger length-width ratio.

[0080] In some embodiments, the vibration directions of the first diaphragm and the second diaphragm are parallel, and the first diaphragm and the second diaphragm are used to form a sound dipole or a sound monopole.

[0081] In this embodiment, the first diaphragm and the second diaphragm can work cooperatively, so that the loudspeaker can have a sound dipole mode and a sound monopole mode, thereby making the loudspeaker have better privacy or better sound quality to adapt to different scenes.

[0082] In a second aspect, the embodiments of the present application provide an electronic device, which comprises a body and a loudspeaker provided by any of the above embodiments. The loudspeaker is fixed to the body.

[0083] In this embodiment, the loudspeaker has a compact structure and good sound quality, is more easily adapted to the shape of the electronic device, makes the shape design of the electronic device more reasonable, and has better sound playing effect. BRIEF DESCRIPTION OF DRAWINGS

[0084] In order to illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0085] In the drawings:

[0086] FIG. 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0087] FIG. 2 is a structural schematic diagram of the loudspeaker shown in FIG. 1 in some embodiments;

[0088] Fig. 3 is a sectional view taken along A-A in Fig. 2;

[0089] Fig. 4 is an exploded structural view of the loudspeaker shown in Fig. 2 in some embodiments;

[0090] Fig. 5 is an exploded structural view of a partial structure of the loudspeaker module shown in Fig. 4;

[0091] Fig. 6 is a sectional view taken along B-B in Fig. 2;

[0092] Fig. 7 is a sectional view taken along C-C in Fig. 2;

[0093] Fig. 8 is a front view taken along A-A in Fig. 2;

[0094] Fig. 9 is a sectional view taken along D-D in Fig. 2;

[0095] Fig. 10 is a sectional view taken along E-E in Fig. 2;

[0096] Fig. 11 is a structural view of the second vibration assembly shown in Fig. 4 in other embodiments;

[0097] Fig. 12 is a structural view of the second vibration assembly shown in Fig. 4 in still other embodiments;

[0098] Fig. 13 is a structural view of the second vibration assembly shown in Fig. 4 in further other embodiments;

[0099] Fig. 14 is a structural view of other embodiments of the loudspeaker shown in Fig. 1;

[0100] Fig. 15 is a schematic view of a sound production principle of the loudspeaker shown in Fig. 1 in some embodiments;

[0101] Fig. 16 is a structural view of another electronic device provided by embodiments of the present application. DETAILED DESCRIPTION

[0102] Embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0103] In the description of embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachably connecting or non-detachably connecting; can be directly connecting or indirectly connecting through an intermediate medium. "Multiple" means at least two.

[0104] The positional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", "top", "bottom", "side" and the like, are only the directions of the drawings, and therefore, the positional terms are used for better and clearer illustration and understanding of the embodiments of the present application, and are not indicative or suggestive of the devices or elements referred to necessarily having a specific orientation, being constructed and operated in a specific orientation, and therefore, cannot be understood as limiting the embodiments of the present application.

[0105] In the embodiments of the present application, the relative positional relationship mentioned, such as parallel, vertical, aligned and the like, are all in view of the current process level, and are not absolute strict limits, and a small amount of deviation is allowed, and approximately parallel, approximately vertical, approximately aligned and the like are all acceptable. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B can be between 80 degrees and 100 degrees.

[0106] In the embodiments of the present application, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicative or suggestive of relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0107] The present application provides a loudspeaker and an electronic device. The loudspeaker comprises a shell, a first vibration assembly, a second vibration assembly, a first magnetic circuit assembly, a second magnetic circuit assembly and a magnetic conductive piece, the magnetic conductive piece is fixed to the inner side of the shell; the first vibration assembly comprises a first diaphragm and a first voice coil, the first diaphragm is fixed to the shell and located on one side of the magnetic conductive piece, the first magnetic circuit assembly is fixed to the side of the magnetic conductive piece facing the first diaphragm, one end of the first voice coil is fixedly connected to the first diaphragm, and the other end is located in the magnetic gap of the first magnetic circuit assembly; the second vibration assembly comprises a second diaphragm and a second voice coil, the second diaphragm is fixed to the shell and located on the other side of the magnetic conductive piece, the second magnetic circuit assembly is fixed to the side of the magnetic conductive piece facing the second diaphragm, one end of the second voice coil is fixedly connected to the second diaphragm, and the other end is located in the magnetic gap of the second magnetic circuit assembly. The loudspeaker of the present application has good low frequency response and good sound quality.

[0108] The electronic device can be an augmented reality (AR) glasses, an AR helmet or a virtual reality (VR) glasses, a tablet computer, a mobile phone, a point-and-read pen, a selfie stick, a bracelet, a smart watch and the like electronic device which needs to output audio by using a loudspeaker.

[0109] Hereinafter, the electronic device is taken as an example of AR glasses for illustration.

[0110] Referring to FIG. 1, FIG. 1 is a structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0111] In some embodiments, the electronic device 100 comprises a frame 10, a display device 20, a speaker 30 and a circuit board 40. The frame 10 serves as the body of the electronic device 100. The display device 20, the speaker 30 and the circuit board 40 are all mounted on the frame 10. The display device 20 and the speaker 30 are electrically connected to the circuit board 40, which is used to control the display of the display device 20 and the sound production of the speaker 30.

[0112] The frame 10 comprises a frame 101 and two temples 102 connected to the frame 101. The two temples 102 are connected to opposite ends of the frame 101. It should be noted that in other embodiments, the frame 10 can also comprise a frame 101 and a fixing band connected to the frame 101, which is not limited in the present application.

[0113] The material of the frame 101 comprises, but is not limited to, metal, plastic, resin or natural material, etc. It should be understood that the frame 101 is not limited to the half-frame type frame shown in FIG. 1, but can also be a full-frame type or a frameless type.

[0114] In the present embodiment, the number of display devices 20 is two, and the structures of the two display devices 20 are the same. Specifically, the two display devices 20 are respectively mounted on the frame 101. When the electronic device 100 is worn on the head of a user, one display device 20 corresponds to the left eye of the user, and the other display device 20 corresponds to the right eye of the user. At this time, the user's eyes can watch a virtual scene or a real scene through the two display devices 20. It should be noted that in other embodiments, the structures of the two display devices 20 can also be different, or the number of the two display devices 20 can also be one or more, which is not limited in the present application.

[0115] In the present embodiment, the display device 20 is mounted on the frame 101 and electrically connected to the circuit board 40. In the present embodiment, the circuit board 40 can be mounted inside the temple 102. The number of the circuit board 40 can be two, and the two circuit boards 40 are respectively located in the two temples 102 and are respectively electrically connected to the corresponding display devices 20. Of course, in other embodiments, the number of the circuit board 40 can also be one, which is located in one of the temples 102.

[0116] Of course, in other embodiments, the circuit board 40 can also be mounted on the frame 101.

[0117] Two temples 102 are rotatably connected to opposite ends of the frame 101. Specifically, the two temples 102 are rotatably connected to the frame 101, respectively. When the electronic device 100 is in an unfolded state (as shown in FIG. 1), the two temples 102 are rotated relative to the frame 101 to face each other, and at this time, the two temples 102 of the electronic device 100 can be respectively arranged on the two ears of the user, and the crossbeam is arranged on the nose bridge of the user to be worn on the head of the user. When the electronic device 100 is in a folded state, the two temples 102 are rotated relative to the frame 101 to at least partially overlap and be accommodated in the inner side of the frame 101, and at this time, the electronic device 100 can be stored.

[0118] It should be noted that the "inner side", "outer side" and other orientation words used by the present application when referring to the electronic device 100 are mainly described based on the orientation of the electronic device 100 when worn on the head of the user. When the electronic device 100 is worn by the user, the side close to the head of the user is the "inner side", and the side away from the head of the user is the "outer side", which does not limit the orientation of the electronic device 100 and other scenes.

[0119] It can be understood that in other embodiments, the two temples 102 can be fixedly connected to the frame 101, respectively, or the two temples 102 can be integrally formed with the frame 101, that is, the electronic device 100 is always in an unfolded state, which is not limited in the present application.

[0120] It can be understood that the two temples 102 in the present embodiment are structurally identical. Of course, in other embodiments, the structures of the two temples 102 can also be different.

[0121] Please refer to FIGS. 2 to 4, FIG. 2 is a structural schematic diagram of the loudspeaker 30 shown in FIG. 1 in some embodiments, FIG. 3 is a cutaway schematic diagram of A-A in FIG. 2, and FIG. 4 is an exploded structural schematic diagram of the loudspeaker 30 shown in FIG. 2 in some embodiments.

[0122] In some embodiments, the loudspeaker 30 includes a housing 1, a first vibration assembly 2, a second vibration assembly 3, a first magnetic circuit assembly 4, and a second magnetic circuit assembly 5. Hereinafter, in order to facilitate description, it is defined that the loudspeaker 30 has a length direction X, a width direction Y, and a thickness direction Z, and the above directions are perpendicular to each other in pairs. It can be understood that the loudspeaker 30 and its components or structures take the side close to the first diaphragm of the first vibration assembly 2 as the "top" and the side away from the first diaphragm of the first vibration assembly 2 as the "bottom".

[0123] The shell 1 can be substantially frame-shaped. For example, the shell 1 can be a rectangular frame. The shell 1 can be hollow in the middle. The inner side of the shell 1 can form a mounting cavity. The mounting cavity can mount components of the loudspeaker 30. In this case, the shell 1 serves as a support structure of the loudspeaker 30. In other embodiments, the shell 1 can also be a frame of other shapes, such as a circular frame, and the like. The embodiments of the present application do not make strict limitations in this regard.

[0124] The shell 1 can include a basin frame 11 and a support 12. The support 12 can be fixed to the basin frame 11. The basin frame 11 can be substantially the same shape as the shell 1. The basin frame 11 can form the main structure of the shell 1. The support 12 can be substantially plate-shaped. The support 12 can be fixed to the inner side of the basin frame 11, making the structure of the shell 1 more regular. For example, the support 12 can be substantially located at the middle of the top side and the bottom side of the basin frame 11. The support 12 and the top side and the bottom side of the support 12 can be provided with other components of the loudspeaker 30. The inner side of the basin frame 11 can refer to the inner side of the space occupied by the basin frame 11, i.e., the support 12 can be located mostly in the internal space of the basin frame 11 and can be partially embedded in the basin frame 11.

[0125] In some examples, the shell 1 can be substantially symmetrical. In other embodiments, the shell 1 can also be asymmetrical.

[0126] The first magnetic circuit assembly 4 can form a magnetic gap 4a. The first magnetic circuit assembly 4 can include a magnet to form a magnetic field. For example, the first magnetic circuit assembly 4 includes at least one magnet. The first magnetic circuit assembly 4 can also include a magnetically conductive component to guide the magnetic circuit. The first magnetic circuit assembly 4 can be fixed to the shell 1. For example, the first magnetic circuit assembly 4 can be fixed to the support 12. In this case, the support 12 has a supporting effect on the first magnetic circuit assembly 4.

[0127] The second magnetic circuit assembly 5 can form a magnetic gap 5a. The second magnetic circuit assembly 5 can include a magnet to form a magnetic field. For example, the second magnetic circuit assembly 5 includes at least one magnet. The second magnetic circuit assembly 5 can also include a magnetically conductive component to guide the magnetic circuit. The second magnetic circuit assembly 5 can be fixed to the shell 1. For example, the second magnetic circuit assembly 5 can be fixed to the support 12. In this case, the support 12 has a supporting effect on the second magnetic circuit assembly 5. The second magnetic circuit assembly 5 and the first magnetic circuit assembly 4 can be arranged side by side to reasonably utilize the space inside the shell 1. The second magnetic circuit assembly 5 and the first magnetic circuit assembly 4 can be spaced apart to avoid the magnetic gaps of the two from being ineffective.

[0128] The first vibration assembly 2 can include a diaphragm and a plurality of voice coils. The first vibration assembly 2 can be fixed to the shell 1. The first vibration assembly 2 can be driven to vibrate and produce sound.

[0129] The first vibration assembly 2 may, for example, include a first diaphragm 21, a first voice coil 22, and a second voice coil 23.

[0130] The first diaphragm 21 may be fixed to the housing 1 and located on one side (i.e., the top side) of the support 12. The first diaphragm 21 may be exposed to the outside of the housing 1. The area of the first diaphragm 21 may be substantially the same as the area of the housing 1. The first diaphragm 21 may have a deformable capability to be able to vibrate.

[0131] One end of the first voice coil 22 may be fixedly connected to the first diaphragm 21, and the other end may be located in the magnetic gap 4a of the first magnetic circuit assembly 4. The first voice coil 22 may have a substantially hollow rectangular structure; the first voice coil 22 may be formed by winding a wire. The first voice coil 22 can be energized and generate an interaction force with the first magnetic circuit assembly 4, thereby vibrating, and the first voice coil 22 drives the first diaphragm 21 to vibrate by its own vibration.

[0132] One end of the second voice coil 23 may be fixedly connected to the first diaphragm 21, and the other end may be located in the magnetic gap 5a of the second magnetic circuit assembly 5. The second voice coil 23 may have a substantially hollow rectangular structure; the second voice coil 23 may be formed by winding a wire. The second voice coil 23 can be energized and generate an interaction force with the second magnetic circuit assembly 5, thereby vibrating, and the second voice coil 23 drives the first diaphragm 21 to vibrate by its own vibration.

[0133] Since the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 are arranged side by side and spaced apart, the first voice coil 22 and the second voice coil 23 may also be arranged side by side and spaced apart correspondingly.

[0134] In this example, when the first voice coil 22 is energized, the first voice coil 22 generates an interaction force with the magnetic field of the first magnetic circuit assembly 4, thereby pushing the first diaphragm 21 to vibrate, and the first diaphragm 21 pushes the air to vibrate to realize the sound production of the loudspeaker 30. The first voice coil 22 may receive an alternating signal to generate an alternating force in the magnetic field. The principle of the second voice coil 23 driving the first diaphragm 21 is the same as that of the first voice coil 22, which will not be described here. The second voice coil 23 may be connected in parallel or in series with the first voice coil 22, which is not strictly limited in this example.

[0135] The direction in which the first voice coil 22 and the second voice coil 23 push the first diaphragm 21 to vibrate may be along the axis direction of the first voice coil 22, which may be the same as the thickness direction Z of the loudspeaker 30, and the vibration direction of the first diaphragm 21 is usually perpendicular to the first diaphragm 21 itself.

[0136] The second vibration assembly 3 may, for example, include a second diaphragm 31, a third voice coil 32, and a fourth voice coil 33.

[0137] The second diaphragm 31 can be fixed to the housing 1 and located on one side (i.e. the bottom side) of the support 12. The second diaphragm 31 can be exposed to the housing 1. The area of the second diaphragm 31 can be substantially consistent with the area of the housing 1. The second diaphragm 31 can have a deformable ability to be able to vibrate.

[0138] One end of the third voice coil 32 can be fixedly connected to the second diaphragm 31, and the other end can be located in the magnetic gap 4a of the first magnetic circuit assembly 4. The third voice coil 32 can have a hollow rectangular structure. The third voice coil 32 can be formed by winding a wire. The third voice coil 32 can be energized and interact with the first magnetic circuit assembly 4 to generate a force, so that the third voice coil 32 vibrates and drives the second diaphragm 31 to vibrate.

[0139] One end of the fourth voice coil 33 can be fixedly connected to the second diaphragm 31, and the other end can be located in the magnetic gap 5a of the second magnetic circuit assembly 5. The fourth voice coil 33 can have a hollow rectangular structure. The fourth voice coil 33 can be formed by winding a wire. The fourth voice coil 33 can be energized and interact with the second magnetic circuit assembly 5 to generate a force, so that the fourth voice coil 33 vibrates and drives the second diaphragm 31 to vibrate.

[0140] Since the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 are arranged side by side and spaced apart, the third voice coil 32 and the fourth voice coil 33 can also be arranged side by side and spaced apart correspondingly.

[0141] In this example, when the third voice coil 32 is energized, the third voice coil 32 interacts with the magnetic field of the first magnetic circuit assembly 4 to generate a force, thereby pushing the second diaphragm 31 to vibrate, and the second diaphragm 31 pushes the air to vibrate to realize the sound generation of the loudspeaker 30. The third voice coil 32 can receive an alternating signal to generate an alternating force in the magnetic field. The fourth voice coil 33 drives the second diaphragm 31 in the same way as the third voice coil 32, which will not be described here. The fourth voice coil 33 can be connected in parallel or in series with the third voice coil 32, which is not strictly limited in this example.

[0142] The direction in which the third voice coil 32 and the fourth voice coil 33 push the second diaphragm 31 to vibrate can be along the axis direction of the third voice coil 32, and the axis direction of the third voice coil 32 can be the same as the thickness direction Z of the loudspeaker 30. The vibration direction of the second diaphragm 31 is usually perpendicular to the second diaphragm 31 itself.

[0143] In this embodiment, for the first vibration component 2, both the first voice coil 22 and the second voice coil 23 are fixedly connected to the first diaphragm 21. The first voice coil 22 and the second voice coil 23 can synchronously drive the first diaphragm 21. At this time, the shape of the first diaphragm 21 has less restriction on the shape of the first voice coil 22 and the second voice coil 23. The first voice coil 22 and the second voice coil 23 can be wound separately, and the aspect ratio of the first voice coil 22 and the second voice coil 23 can be reasonably wound according to requirements, making the winding of the first voice coil 22 and the second voice coil 23 simpler. In addition, the first voice coil 22 is driven by the first magnetic circuit component 4, and the second voice coil 23 is driven by the second magnetic circuit component 5. That is, the first voice coil 22 and the second voice coil 23 are driven by different magnetic circuit components, which is beneficial to improving the driving force on the first voice coil 22 and the second voice coil 23, thereby facilitating the driving of the first diaphragm 21 and improving the sound quality.

[0144] Similarly, for the second vibrating component 3, both the third voice coil 32 and the fourth voice coil 33 are fixedly connected to the second diaphragm 31. The third voice coil 32 and the fourth voice coil 33 can synchronously drive the second diaphragm 31. At this time, the shape of the second diaphragm 31 has less restriction on the shape of the third voice coil 32 and the fourth voice coil 33. The third voice coil 32 and the fourth voice coil 33 can be wound separately, and their aspect ratios can be reasonably wound according to requirements, making the winding of the third voice coil 32 and the fourth voice coil 33 simpler. In addition, the third voice coil 32 is driven by the first magnetic circuit component 4, and the fourth voice coil 33 is driven by the second magnetic circuit component 5. That is, the third voice coil 32 and the fourth voice coil 33 are driven by different magnetic circuit components, which helps to increase the driving force on the third voice coil 32 and the fourth voice coil 33, thereby facilitating the driving of the second diaphragm 31 and improving sound quality.

[0145] The first vibration component 2 and the second vibration component 3 are located on both sides of the support 12, which makes the arrangement of the components of the speaker 30 more reasonable and helps to maximize the use of space.

[0146] Furthermore, both the first diaphragm 21 and the second diaphragm 31 can vibrate. The cooperation between the first diaphragm 21 and the second diaphragm 31 can enable the speaker 30 to have better low-frequency loudness, thereby improving the sound quality of the speaker 30.

[0147] In addition, the first voice coil 22 and the third voice coil 32 are both driven by the first magnetic circuit assembly 4, and the second voice coil 23 and the fourth voice coil 33 are both driven by the second magnetic circuit assembly 5. This is equivalent to reusing the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5, which reduces the number of components in the speaker 30 and saves space inside the housing 1. This is beneficial to increasing the vibration space of the first diaphragm 21 and the second diaphragm 31, thereby improving the sound quality of the speaker 30.

[0148] The embodiment sets the relationship among the shell 1, the first vibration assembly 2, the second vibration assembly 3, the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 reasonably, so that the structure of the loudspeaker 30 is more reasonable and compact, the loudspeaker 30 has a larger vibration area and vibration height, thereby being beneficial to improving the sound quality of the loudspeaker 30, and the loudspeaker 30 has better processability and is simple to manufacture.

[0149] Please continue to refer to FIGS. 3 and 4.

[0150] In some embodiments, the first diaphragm 21 can include a vibration part 211, a folded ring part 212 and a fixed part 213. The vibration part 211, the folded ring part 212 and the fixed part 213 are fixedly connected in sequence.

[0151] The vibration part 211 can have a rectangular structure. The folded ring part 212 surrounds the outer circumferential side of the vibration part 211 and connects the vibration part 211; the folded ring part 212 can have deformability, for example, the folded ring part 212 can have an overall arc surface ring structure, which is easy to deform and stretch, so that the vibration part 211 can displace relative to the fixed part 213. The folded ring part 212 can be protrudingly arranged towards the direction away from the shell 1 and towards the top side. The fixed part 213 surrounds the outer circumferential side of the folded ring part 212 and connects the folded ring part 212, and the fixed part 213 can have a ring structure, thereby being conveniently fixed to the top side of the shell 1. The folded ring part 212 and the vibration part 211 correspond to the hollowed-out position of the middle part of the shell 1, and the hollowed-out position is used for avoiding the deformation movement of the folded ring part 212 and the vibration movement of the vibration part 211.

[0152] In some embodiments, the first vibration assembly 2 can further include a first centering branch 24. The first voice coil 22 and the second voice coil 23 can be fixedly connected to the first diaphragm 21 through the first centering branch 24, so as to better meet the position arrangement requirements of the first voice coil 22 and the second voice coil 23.

[0153] The first centering branch 24 can have a frame shape, and the first centering branch 24 can have a plate shape, so that the first voice coil 22 and the second voice coil 23 are uniformly connected to the first diaphragm 21.

[0154] The first centering branch 24 can have deformability. The main deformation direction of the first centering branch 24 can be the thickness direction of the first centering branch 24, that is, can be parallel to the thickness direction Z, and the deformability of the first centering branch 24 in the plane of the length direction X and the width direction Y can be as small as possible.

[0155] For example, the first centering sheet 24 can include an outer ring portion 241, a deformation portion 242, and an inner ring portion 243, and the deformation portion 242 is fixedly connected to the outer ring portion 241 and the inner ring portion. The outer ring portion 241 can be a rectangular ring structure, and the outer ring portion 241 can be used to be fixedly connected to the surface of the top side of the shell 1, and the outer ring portion 241 is also used to be fixedly connected to the fixed portion 213 of the first diaphragm 21. One side of the inner ring portion 243 is fixedly connected to the first voice coil 22 and the second voice coil 23, and the other side of the inner ring portion 243 is used to be fixedly connected to the vibrating portion 211 of the first diaphragm 21. One end of the deformation portion 242 is fixedly connected to the inner circumferential side of the outer ring portion 241, and the other end of the deformation portion 242 is fixedly connected to the outer circumferential side of the inner ring portion 243, and the deformation portion 242 corresponds to the lower side of the folded ring portion 212 of the first diaphragm 21. The deformation portion 242 can be elastically deformed, and the main deformation direction of the deformation portion 242 can be parallel to the thickness direction Z. When the first voice coil 22 and the second voice coil 23 drive the vibrating portion 211 of the first diaphragm 21 to vibrate, the inner ring portion 243 vibrates with the vibrating portion 211, the outer ring portion 241 is fixed relative to the shell 1, the outer ring portion 241 and the inner ring portion 243 generate relative motion, the deformation portion 242 makes the first voice coil 22 and the second voice coil 23 vibrate mainly in a direction perpendicular to the vibrating portion 211, and reduces the movement of the first voice coil 22 and the second voice coil 23 in a direction parallel to the vibrating portion 211.

[0156] In some embodiments, the first centering sheet 24 can be electrically connected to the first voice coil 22 and the second voice coil 23, and at this time, the first centering sheet 24 can be conductive, thereby realizing the energization of the first voice coil 22 and the second voice coil 23. In other embodiments, the first centering sheet 24 can also not be electrically connected to the first voice coil 22 and the second voice coil 23.

[0157] In some embodiments, the first vibration assembly 2 can further include a first reinforcing sheet 25. The first reinforcing sheet 25 is fixed to the side of the first diaphragm 21 facing the second diaphragm 31, and the first reinforcing sheet 25 corresponds to the interval between the first voice coil 22 and the second voice coil 23, and in the arrangement direction of the first voice coil 22 and the second voice coil 23, the length of the first reinforcing sheet 25 can be greater than the interval between the first voice coil 22 and the second voice coil 23.

[0158] In some embodiments, the first reinforcing sheet 25 can be a sheet structure. The first reinforcing sheet 25 can have relatively high rigidity. For example, the rigidity of the first reinforcing sheet 25 can be greater than or equal to the rigidity of the vibrating portion 211 of the first diaphragm 21, but it is not strictly limited thereto.

[0159] By setting the first reinforcing sheet 25, the rigidity of the position where the first diaphragm 21 connects the first voice coil 22 and the second voice coil 23 is reinforced, the moment of inertia of the first vibration assembly 2 is improved, thereby avoiding the bending of the first diaphragm 21 when vibrating, and the sound quality of the first diaphragm 21 pushing the air to vibrate to make sound is better; in addition, avoiding the bending of the first diaphragm 21 can also avoid the deflection of the first voice coil 22 and the second voice coil 23, thereby avoiding the collision between the first voice coil 22 and the first magnetic circuit assembly 4, the second voice coil 23 and the second magnetic circuit assembly 5, and improving the reliability of the loudspeaker 30.

[0160] In other embodiments, the first vibration assembly 2 can also not include the first reinforcing sheet 25. Alternatively, the first diaphragm 21 can be locally thickened at the interval corresponding to the first voice coil 22 and the second voice coil 23, thereby improving the moment of inertia of the first diaphragm 21.

[0161] In some embodiments, the second diaphragm 31 can include a vibration part 311, a folded ring part 312, and a fixed part 313. The vibration part 311, the folded ring part 312, and the fixed part 313 are sequentially fixedly connected.

[0162] The vibration part 311 can have a rectangular structure. The folded ring part 312 surrounds the outer periphery of the vibration part 311 and connects the vibration part 311; the folded ring part 312 can have deformability, for example, the folded ring part 312 can have an overall arc surface ring structure that is easy to deform and stretch, so that the vibration part 311 can displace relative to the fixed part 313. The folded ring part 312 can be protrudingly arranged towards the direction away from the shell 1 towards the bottom side. The fixed part 313 surrounds the outer periphery of the folded ring part 312 and connects the folded ring part 312, and the fixed part 313 can have a ring structure, thereby facilitating fixation to the bottom side of the shell 1. The folded ring part 312 and the vibration part 311 correspond to the hollowed-out position of the middle part of the shell 1, and the hollowed-out position is used to avoid the deformation movement of the folded ring part 312 and the vibration movement of the vibration part 311.

[0163] In some embodiments, the vibration directions of the first diaphragm 21 and the second diaphragm 31 can be parallel, and the first diaphragm 21 and the second diaphragm 31 can be used to form a sound dipole or a sound monopole. The first diaphragm 21 and the second diaphragm 31 can be arranged substantially in parallel, and the areas of the first diaphragm 21 and the second diaphragm 31 can be the same.

[0164] In some embodiments, the second vibration assembly 3 can further include a second centering branch 34. The third voice coil 32 and the fourth voice coil 33 can be fixedly connected to the second diaphragm 31 through the second centering branch 34, so as to better meet the position arrangement requirements of the third voice coil 32 and the fourth voice coil 33.

[0165] The second centering sheet 34 can be substantially frame-shaped, and the centering sheet can be substantially plate-shaped, so that the third voice coil 32 and the fourth voice coil 33 are uniformly connected to the second diaphragm 31.

[0166] The second centering sheet 34 can have a deformation capability. The main deformable direction of the second centering sheet 34 is mainly the thickness direction of the second centering sheet 34, that is, can be parallel to the thickness direction Z, and the deformability of the second centering sheet 34 in the plane of the length direction X and the width direction Y can be as small as possible.

[0167] For example, the second centering sheet 34 can include an outer ring portion 341, a deformation portion 342, and an inner ring portion 343, and the deformation portion 342 is fixedly connected to the outer ring portion 341 and the inner ring portion 343. The outer ring portion 341 can be a rectangular ring structure, and the outer ring portion 341 can be used to be fixedly connected to the bottom surface of the shell 1, and the outer ring portion 341 can also be used to be fixedly connected to the fixed portion 313 of the second diaphragm 31. One side of the inner ring portion 343 is fixedly connected to the third voice coil 32 and the fourth voice coil 33, and the other side of the inner ring portion 343 is used to be fixedly connected to the vibrating portion 311 of the second diaphragm 31. One end of the deformation portion 342 is fixedly connected to the inner circumferential side of the outer ring portion 341, and the other end of the deformation portion 342 is fixedly connected to the outer circumferential side of the inner ring portion 343, and the deformation portion 342 corresponds to the upper side of the folded ring portion 312 of the second diaphragm 31. The deformation portion 342 can be elastically deformed, and the main deformation direction of the deformation portion 342 can be parallel to the thickness direction Z. When the third voice coil 32 and the fourth voice coil 33 drive the vibrating portion 311 of the second diaphragm 31 to vibrate, the inner ring portion 343 vibrates with the vibrating portion 311, the outer ring portion 341 is fixed relative to the shell 1, the outer ring portion 341 and the inner ring portion 343 generate relative motion, the deformation portion 342 makes the third voice coil 32 and the fourth voice coil 33 vibrate mainly in a direction perpendicular to the vibrating portion 311, and reduces the movement of the third voice coil 32 and the fourth voice coil 33 in a direction parallel to the vibrating portion 311.

[0168] The second centering sheet 34 can also be electrically connected to the third voice coil 32 and the fourth voice coil 33, at this time, the second centering sheet 34 can conduct electricity, thereby realizing the energization of the third voice coil 32 and the fourth voice coil 33. In other embodiments, the second centering sheet 34 can also not be electrically connected to the third voice coil 32 and the fourth voice coil 33.

[0169] In some embodiments, the second vibration assembly 3 can further include a second reinforcing sheet 35, and the second reinforcing sheet 35 is fixed to the side of the second diaphragm 31 facing the first diaphragm 21, and the second reinforcing sheet 35 corresponds to the interval between the third voice coil 32 and the fourth voice coil 33. In the arrangement direction of the third voice coil 32 and the fourth voice coil 33, the length of the second reinforcing sheet 35 can be greater than the interval between the third voice coil 32 and the fourth voice coil 33.

[0170] The second reinforcing sheet 35 can be in a sheet shape. The second reinforcing sheet 35 can have a high rigidity. For example, the rigidity of the second reinforcing sheet 35 can be greater than or equal to the vibrating portion 311 of the second diaphragm 31, but is not strictly limited thereto.

[0171] By arranging the second reinforcing sheet 35, the rigidity of the position where the second diaphragm 31 connects the third voice coil 32 and the fourth voice coil 33 is reinforced, the moment of inertia of the second vibration assembly 3 is improved, thereby avoiding the bending of the second diaphragm 31, and the sound quality of the second diaphragm 31 pushing the air to vibrate to produce sound is better. In addition, avoiding the bending of the second diaphragm 31 can also avoid the deflection of the third voice coil 32 and the fourth voice coil 33, thereby avoiding the collision between the third voice coil 32 and the first magnetic circuit assembly 4 and the collision between the fourth voice coil 33 and the second magnetic circuit assembly 5, and improving the reliability of the loudspeaker 30. The size and shape of the second reinforcing sheet 35 are easy to arrange, and the moment of inertia of the second vibration assembly 3 can be increased without affecting the mass of the second vibration assembly 3.

[0172] In some other embodiments, the second reinforcing sheet 35 can also not be arranged. Alternatively, the second diaphragm 31 can be locally thickened at the interval corresponding to the third voice coil 32 and the fourth voice coil 33, thereby increasing the moment of inertia of the second diaphragm 31.

[0173] In some embodiments, the second vibration assembly 3 can further include a fixing member 36. The fixing member 36 is fixedly connected to the side wall opposite to the third voice coil 32 and the fourth voice coil 33. The fixing member 36 can be in a sheet shape.

[0174] For example, the fixing member 36 can be arranged on the end face of the third voice coil 32 and the fourth voice coil 33 away from the second diaphragm 31.

[0175] For example, the material of the fixing member 36 can be metal or plastic, for example, PI (Polyimide), PET (Polyethylene terephthalate), PEN (Polyethylene naphthalate two formic acid glycol ester), PEEK (Polyether ether ketone), etc., which is not strictly limited in the present embodiment.

[0176] In some examples, the fixing member 36 can be a circuit board, and the fixing member 36 can be electrically connected to the third voice coil 32 and the fourth voice coil 33. At this time, the fixing member 36 can have the functions of fixing the third voice coil 32 and the fourth voice coil 33 and electrically connecting the third voice coil 32 and the fourth voice coil 33, which is conducive to reducing the number of parts of the second vibration assembly 3.

[0177] At this time, since the third voice coil 32 and the fourth voice coil 33 are fixedly connected to the second diaphragm 31 respectively, the third voice coil 32 and the fourth voice coil 33 have a gap therebetween, when the third voice coil 32 and the fourth voice coil 33 drive the second diaphragm 31 respectively, if the third voice coil 32 and the fourth voice coil 33 are unevenly stressed or are stressed too much, the second diaphragm 31 is prone to bend at the gap corresponding to the third voice coil 32 and the fourth voice coil 33, thereby affecting the sound quality of the vibration sound of the second diaphragm 31.

[0178] In the embodiment, the third voice coil 32 and the fourth voice coil 33 are fixedly connected by the fixing member 36, so that the third voice coil 32 and the fourth voice coil 33 are kept relatively fixed, thereby increasing the moment of inertia of the second vibration assembly 3, reducing the deformation of the vibration part 311 of the second diaphragm 31, and being beneficial to improving the sound quality of the vibration sound of the second diaphragm 31; in addition, the third voice coil 32 and the fourth voice coil 33 are relatively fixed, and can vibrate synchronously, so that the driving of the second diaphragm 31 is more synchronous, which is beneficial to improving the sound quality of the vibration sound of the second diaphragm 31, and the third voice coil 32 and the fourth voice coil 33 will not be deflected, so that the collision with the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 can be avoided, which is beneficial to improving the stability of the loudspeaker 30.

[0179] In some embodiments, the first magnetic circuit assembly 4 can include a first center magnet 41 and a first side magnet 42. The first side magnet 42 is located on the side of the first center magnet 41, and the first center magnet 41 and the first side magnet 42 can form a magnetic gap 4a of the first magnetic circuit assembly 4.

[0180] The first center magnet 41 and the first side magnet 42 can both be substantially rectangular plate structures. The first side magnet 42 surrounds the first center magnet 41 and is arranged in a spaced manner with the first center magnet 41. For example, the first side magnet 42 can include three magnets arranged on the side of the first center magnet 41 and arranged in a spaced manner with the first center magnet 41.

[0181] For example, the first magnetic circuit assembly 4 can further include a first center magnetic conductor 43, which can be fixed to the side of the first center magnet 41 facing the first diaphragm 21. The first center magnetic conductor 43 is opposite to and spaced from the vibration part 211 of the first diaphragm 21. The first center magnetic conductor 43 can be made of a magnetic conductive material.

[0182] In some embodiments, the second magnetic circuit assembly 5 can include a second center magnet 51 and a second side magnet 52, the second side magnet 52 is located on the side of the second center magnet 51, and the second center magnet 51 and the second side magnet 52 can form a magnetic gap 5a of the second magnetic circuit assembly 5;

[0183] The second center magnet 51 and the second side magnet 52 can each have a substantially rectangular plate structure. The second side magnet 52 surrounds and is spaced apart from the second center magnet 51. For example, the second side magnet 52 can include three magnets arranged on the side of the second center magnet 51 and spaced apart from the second center magnet 51.

[0184] For example, the first magnetic circuit assembly 4 can further include a second center magnetic conductor 53, which can be fixed to the side of the second center magnet 51 facing the first diaphragm 21. The second center magnetic conductor 53 is opposite and spaced apart from the vibrating part 211 of the first diaphragm 21. The second center magnetic conductor 53 can be made of a magnetic conductive material.

[0185] Please refer to FIGS. 3-5, and FIG. 5 is an exploded structural schematic diagram of part of the structure of the loudspeaker 30 module shown in FIG. 4.

[0186] In some embodiments, the yoke 11 can include a first frame body 111 and a second frame body 112.

[0187] The first frame body 111 can have a substantially rectangular frame structure. The first frame body 111 can include four wall plates connected in sequence, and the four wall plates are fixedly connected and surround an installation space, which can be used to install the first vibration assembly 2. The first frame body 111 can be provided with a first fixing groove 1111, which can be located on the top side of the first frame body 111.

[0188] For example, the first frame body 111 can have a positioning part 1112. The positioning part 1112 can be located on two opposite wall plates of the first frame body 111 in the first direction. The two oppositely arranged positioning parts 1112 can form a group. The positioning part 1112 can be located on the bottom side of the first frame body 111 and protrude in a direction away from the top side. In some examples, the number of groups of positioning parts 1112 can be multiple. The first direction can be parallel to the width direction Y.

[0189] The second frame body 112 can have a substantially rectangular frame structure. The second frame body 112 can include four wall plates connected in sequence, and the four wall plates are fixedly connected and surround an installation space, which can be used to install the first vibration assembly 2. The second frame body 112 can be provided with a second fixing groove 1121, which can be located on the top side of the second frame body 112.

[0190] For example, the second frame body 112 can have a clamping part 1122. The clamping part 1122 can be located on two opposite wall plates of the second frame body 112 in the first direction. The two oppositely arranged clamping parts 1122 can form a group. The clamping part 1122 can be located on the top side of the second frame body 112. In some examples, the number of groups of clamping parts 1122 can be multiple.

[0191] In the loudspeaker 30, the first frame body 111 and the second frame body 112 are fixedly connected, the first diaphragm 21 can be fixed to the top side surface of the first frame body 111, and the second diaphragm 31 can be fixed to the bottom side surface of the second frame body 112. By arranging the first frame body 111 and the second frame body 112 separately and forming the frame 11, the manufacturing and assembly of the frame 11 are facilitated.

[0192] In some embodiments, the support 12 can include a first support portion 121, a connecting portion 122, and a second support portion 123 connected in sequence.

[0193] The first support portion 121 and the second support portion 123 are recessed, respectively. For example, in the loudspeaker 30, the first support portion 121 and the second support portion 123 are recessed towards the second diaphragm 31, respectively. The first support portion 121, the connecting portion 122, and the second support portion 123 can surround an avoiding space. The arrangement direction of the first support portion 121 and the second support portion 123 can be parallel to the length direction X. At this time, the first direction is perpendicular to the arrangement direction of the first diaphragm 21 and the second diaphragm 31, and is perpendicular to the arrangement direction of the first support portion 121 and the second support portion 123,

[0194] For example, the first support portion 121 can surround a slot space. The first support portion 121 can be substantially in a "U" shape structure. For example, the first support portion 121 can include a first side wall 1211, a bottom wall 1212, and a second side wall 1213. The first side wall 1211, the bottom wall 1212, and the second side wall 1213 of the first support portion 121 are fixedly connected in sequence and surround the slot space. In the loudspeaker 30, the bottom wall 1212 of the first support portion 121 can be located on the side of the first center magnet 41 away from the first diaphragm 21.

[0195] For example, the second support portion 123 can also surround a slot space. The second support portion 123 can also be substantially in a "U" shape structure. For example, the second support portion 123 can include a first side wall 1231, a bottom wall 1232, and a second side wall 1233. The first side wall 1231, the bottom wall 1232, and the second side wall 1233 of the second support portion 123 are fixedly connected in sequence and surround the slot space. In the loudspeaker 30, the bottom wall 1232 of the second support portion 123 can be located on the side of the second center magnet 51 away from the first diaphragm 21.

[0196] Exemplarily, the second side wall 1213 of the first support part 121 can be oppositely arranged with the first side wall 1231 of the second support part 123, and the connecting part 122 fixedly connects the second side wall 1213 of the first support part 121 and the first side wall 1231 of the second support part 123. The second side wall 1213 of the first support part 121, the connecting part 122 and the first side wall 1231 of the second support part 123 form an avoiding space therebetween. The first support part 121 and the second support part 123 can have substantially same height in the thickness direction Z.

[0197] The first center magnet 41 can be mounted on the first support part 121, and the second center magnet 51 can be mounted on the second support part 123. Exemplarily, the first center magnet 41 can be fixed on the bottom wall 1212 of the first support part 121, and gaps are left between the first center magnet 41 and the first side wall 1211 and the second side wall 1213 of the first support part 121. The second center magnet 51 can be fixed on the bottom wall 1232 of the second support part 123, and gaps are left between the second center magnet 51 and the first side wall 1231 and the second side wall 1233 of the second support part 123.

[0198] The third voice coil 32 can surround the first support part 121, and the fourth voice coil 33 can surround the second support part 123. Part of the structure of the third voice coil 32 and part of the structure of the fourth voice coil 33 can be located in the avoiding space, and the first voice coil 22 and the second voice coil 23 are respectively located on two sides of the avoiding space.

[0199] Exemplarily, the third voice coil 32 can be located outside the first support part 121 and surround the first support part 121. Part of the structure of the third voice coil 32 can be opposite to the first side wall 1211 of the first support part 121, and another part of the structure of the third voice coil 32 can be opposite to the second side wall 1213 of the first support part 121, that is, part of the structure of the third voice coil 32 is located in the avoiding space. It is easy to understand that, since the third voice coil 32 is located in the magnetic gap 4a of the first magnetic circuit assembly 4, the third voice coil 32 can surround the first center magnet 41.

[0200] The first voice coil 22 is located in the magnetic gap 4a of the first magnetic circuit assembly 4, and the first voice coil 22 can directly surround the first center magnet 41. Part of the structure of the first voice coil 22 is located between the first center magnet 41 and the first side wall 1211 of the first support part 121, and another part of the structure of the first voice coil 22 is located between the first center magnet 41 and the second side wall 1213 of the first support part 121.

[0201] Similarly, the fourth voice coil 33 can be located outside the second support portion 123 and surround the first support portion 121. Part of the structure of the fourth voice coil 33 can be opposite to the first side wall 1211 of the first support portion 121, and another part of the structure of the fourth voice coil 33 can be opposite to the second side wall 1213 of the first support portion 121, that is, part of the structure of the fourth voice coil 33 is located in the avoiding space. Wherein, since the fourth voice coil 33 is located in the magnetic gap 4a of the first magnetic circuit assembly 4, the fourth voice coil 33 surrounds the first center magnet 41.

[0202] The fourth voice coil 33 is located in the magnetic gap 5a of the second magnetic circuit assembly 5, and the fourth voice coil 33 can directly surround the second center magnet 51. Part of the structure of the fourth voice coil 33 is located between the second center magnet 51 and the first side wall 1231 of the second support portion 123, and another part of the structure of the fourth voice coil 33 is located between the second center magnet 51 and the second side wall 1233 of the second support portion 123.

[0203] In the embodiment, by setting the structures of the first support portion 121, the second support portion 123 and the connecting portion 122, the first support portion 121 fixes the first center magnet 41, and the second support portion 123 fixes the second center magnet 51; the first voice coil 22 and the third voice coil 32 surround the first center magnet 41, the connecting portion 122 avoids the third voice coil 32, which is equivalent to multiplexing the first magnetic circuit assembly 4; and the second voice coil 23 and the fourth voice coil 33 surround the second center magnet 51, and the connecting portion 122 avoids the fourth voice coil 33, which is equivalent to multiplexing the second magnetic circuit assembly 5. Since the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 are multiplexed, the number of magnetic components can be reduced, the number of parts can be reduced, and the space in the thickness direction Z of the loudspeaker 30 can be fully utilized, which is conducive to improving the vibration distance of the first diaphragm 21 and the second diaphragm 31 and thus improving the sound quality of the loudspeaker 30; or conducive to reducing the thickness of the loudspeaker 30, thereby facilitating the thinning of the loudspeaker 30. In addition, the first side wall 1211 and the second side wall 1213 of the first support portion 121 have an isolation effect on the first voice coil 22 and the third voice coil 32, avoiding collision between the first voice coil 22 and the third voice coil 32, and the first side wall 1231 and the second side wall 1233 of the second support portion 123 have an isolation effect on the second voice coil 23 and the fourth voice coil 33, avoiding collision between the second voice coil 23 and the fourth voice coil 33, thereby improving the reliability of the loudspeaker 30.

[0204] In some embodiments, the support 12 can further include a first fixing portion 124 and a second fixing portion 125. The first fixing portion 124 is connected to the first support portion 121, and the second fixing portion 125 is connected to the second support portion 123. The first fixing portion 124 and the second fixing portion 125 are fixedly connected to the basin frame 11. At this time, the first fixing portion 124 and the second fixing portion 125 are used to connect the first support portion 121 and the second support portion 123 to the basin frame 11, thereby playing a role of fixing the first fixing portion 124 and the second fixing portion 125. In addition, since the inner side of the basin frame 11 has a large space, at this time, the support 12 is beneficial to strengthening the structural strength of the basin frame 11, and avoiding the support 12 from being deformed under stress in the arrangement direction of the first fixing portion 124 and the second fixing portion 125. For example, when the first fixing portion 124 and the second fixing portion 125 are arranged along the length direction X, the support 12 greatly strengthens the length direction X of the basin frame 11.

[0205] In addition, in the loudspeaker 30, the first side magnet 42 can be partially mounted on the surface of the first fixing portion 124 facing the second diaphragm 31, and the first center magnet 41 can be mounted on the surface of the first support portion 121 facing the first diaphragm 21. The second side magnet 52 can be partially mounted on the surface of the second fixing portion 125 facing the second diaphragm 31, and the first center magnet 41 can be mounted on the surface of the second support portion 123 facing the first diaphragm 21. The support 12 can be magnetically conductive. For example, the first side wall 1211 of the first support portion 121 can be located in the magnetic gap 4a of the first magnetic circuit assembly 4 (i.e. between the first side magnet 42 and the first center magnet 41), and the first side wall 1231 of the second support portion 123 can be located in the magnetic gap 5a of the second magnetic circuit assembly 5 (between the second side magnet 52 and the second center magnet 51).

[0206] At this time, the support 12 is equivalent to spanning from the bottom side of the first center magnet 41 to the top side of the first side magnet 42. Since the support 12 is magnetically conductive, the support 12 is beneficial to the magnetic circuit formation of the first magnetic circuit assembly 4. It can be understood that the magnetic pole of the bottom side of the first center magnet 41 is the same as the magnetic pole of the top side of the first side magnet 42.

[0207] In some embodiments, the support 12 can include a support plate 12a and a ring-shaped plate 12b.

[0208] The first fixing portion 124, the first support portion 121, the connecting portion 122, the second support portion 123, and the second fixing portion 125 can be formed on the support plate 12a. The support plate 12a can be substantially a bent plate.

[0209] For example, the support plate 12a can be made of a magnetically conductive material to be magnetically conductive.

[0210] Exemplarily, the support plate 12a can be a one-piece structure. For example, the support plate 12a can be formed by bending or stamping a plate. In this case, the support plate 12a has good support performance such as rigidity and strength, and has good magnetic conductive performance.

[0211] Exemplarily, the connecting portion 122 of the support plate 12a can be flush with the first fixing portion 124 and the second fixing portion 125, so as to facilitate the molding of the support plate 12a.

[0212] The annular plate 12b can be substantially a plate with a through hole in the middle. The annular plate 12b has a first avoiding hole 126 in the middle. The annular plate 12b can be substantially a rectangular plate structure.

[0213] Exemplarily, the annular plate 12b can be made of a magnetic conductive material. However, it is not strictly limited thereto.

[0214] In the loudspeaker 30, the support plate 12a can be fixed to the basket 11. The support plate 12a can be spaced apart from the annular plate 12b, so as to be fixed to the basket 11 respectively. In some examples, the connecting portion 122 of the support plate 12a can be flush with the annular plate 12b. The first avoiding hole 126 of the annular plate 12b can be substantially the same as the shape of the support plate 12a. The first voice coil 22 and the second voice coil 23 can be located in the first avoiding hole 126, and the first avoiding hole 126 is used to provide space for the placement and vibration of the first voice coil 22 and the second voice coil 23.

[0215] Further, the support plate 12a can be a one-piece structure with the basket 11. Exemplarily, the support plate 12a and the basket 11 can be formed into a one-piece structure by injection molding. In this case, the connection between the support plate 12a and the basket 11 is reliable, and the overall strength of the structure is high, and the structure is not easy to deform, and has good support capability for the first magnetic circuit assembly 4, the second magnetic circuit assembly 5, the first vibration assembly 2 and the second vibration assembly 3, thereby ensuring that the loudspeaker 30 has good and stable sound quality.

[0216] In addition, the annular plate 12b can be fixed to the basket 11. The annular plate 12b can be a one-piece structure with the basket 11. Exemplarily, the annular plate 12b can be located in the first fixing groove 1111 of the first frame body 111, and the annular plate 12b and the basket 11 can be formed into a one-piece structure by injection molding. Similarly, the annular plate 12b can further improve the strength of the structure, thereby ensuring the sound quality of the loudspeaker 30.

[0217] In the embodiment, the support 12 is formed in two parts by the support plate 12a and the annular plate 12b, so as to facilitate the manufacture of the support plate 12a and the annular plate 12b respectively. In addition, the support plate 12a and the annular plate 12b are formed in two parts, so as to make the support plate 12a have a wider width in the width direction Y, and the support plate 12a has a better support capacity, thereby more reliably supporting the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5. That is, the embodiment can facilitate the support plate 12a to have a reasonable structure, so as to make the support plate 12a have better processability, support capacity and magnetic conductivity.

[0218] In other embodiments, the support plate 12a and the annular plate 12b can be an integral structure.

[0219] In some embodiments, the shell 1 can further include a magnetic conducting member 13.

[0220] For example, the magnetic conducting member 13 can have a structure with a middle part penetrating through. The middle part of the magnetic conducting member 13 forms a second avoiding hole 131. The magnetic conducting member 13 can have a substantially rectangular plate structure. The size and shape of the magnetic conducting member 13 can be substantially consistent with the annular plate 12b.

[0221] For example, the magnetic conducting member 13 can be made of a magnetic conducting material.

[0222] In the loudspeaker 30, the magnetic conducting member 13 can be fixed to the basket 11. The annular plate 12b can be an integral structure with the basket 11. For example, the annular plate 12b can be located in the second fixing groove 1121 of the second frame body 112, and the annular plate 12b and the basket 11 form an integral structure by injection molding. The annular plate 12b can further improve the strength of the structure, so as to make the overall strength of the structure higher, and the structure is not easy to deform, thereby ensuring that the loudspeaker 30 has better and stable sound quality.

[0223] Please refer to FIG. 3, FIG. 6 and FIG. 7, FIG. 6 is a sectional view along B-B in FIG. 2, and FIG. 7 is a sectional view along C-C in FIG. 2.

[0224] In some embodiments, the first side magnet 42 and the second side magnet 52 are respectively fixed to the surface of the annular plate 12b facing the second diaphragm 31, that is, the annular plate 12b is located on the side of the first side magnet 42 and / or the second side magnet 52 facing the first diaphragm 21.

[0225] For example, as shown in FIG. 6, the three magnets of the first side magnet 42 are fixed on the same side surface of the annular plate 12b. It is easy to understand that the annular plate 12b is located at the side of the first center magnet 41 and surrounds the first voice coil 22. At this time, the annular plate 12b magnetically guides the first side magnet 42 and forms a magnetic gap with the first center magnet 41. Since the annular plate 12b is located at the side of the first magnetic circuit assembly 4 facing the first diaphragm 21, the first voice coil 22 is closer to the annular plate 12b, so that the first magnetic circuit assembly 4 is easier to drive the first voice coil 22.

[0226] For example, as shown in FIG. 7, the three magnets of the second side magnet 52 are fixed on the same side surface of the annular plate 12b. It is easy to understand that the annular plate 12b is located at the side of the second center magnet 51 and surrounds the second voice coil 23. At this time, the annular plate 12b magnetically guides the second side magnet 52 and forms a magnetic gap with the second center magnet 51. Since the annular plate 12b is located at the side of the second magnetic circuit assembly 5 facing the second diaphragm 31, the second voice coil 23 is closer to the annular plate 12b, so that the second magnetic circuit assembly 5 is easier to drive the second voice coil 23.

[0227] In some embodiments, the magnetic guide 13 is located between the first magnetic circuit assembly 4 and the second diaphragm 31, and the first side magnet 42 and the second side magnet 52 are fixed on the surface of the magnetic guide 13 facing the first diaphragm 21, that is, the magnetic guide 13 is located at the side of the first side magnet 42 facing the second diaphragm 31.

[0228] For example, as shown in FIG. 6, the three magnets of the first side magnet 42 are fixed on the same side surface of the annular plate 12b. It is easy to understand that the annular plate 12b is located at the side of the first center magnet 41 and surrounds the first voice coil 22. At this time, the annular plate 12b magnetically guides the first side magnet 42 and forms a magnetic gap with the first center magnet 41. Since the annular plate 12b is located at the side of the first magnetic circuit assembly 4 facing the first diaphragm 21, the first voice coil 22 is closer to the annular plate 12b, so that the first magnetic circuit assembly 4 is easier to drive the first voice coil 22.

[0229] At this time, the first side magnet 42 is located between the annular plate 12b and the magnetic guide 13, and the annular plate 12b and the magnetic guide 13 fix the first side magnet 42, which is more reliable, and the annular plate 12b and the magnetic guide 13 magnetically guide two poles of the first side magnet 42.

[0230] As shown in Fig. 7, the three magnets of the second side magnet 52 are fixed on the same side surface of the magnetic conductive member 13. It is easy to understand that the magnetic conductive member 13 is located on the side of the second center magnet 51 and surrounds the fourth voice coil 33. At this time, the magnetic conductive member 13 magnetically conducts the second side magnet 52 and forms a magnetic gap with the second center magnet 51. Since the magnetic conductive member 13 is located on the side of the second magnetic circuit assembly 5 facing the second diaphragm 31, the fourth voice coil 33 is closer to the magnetic conductive member 13, so that the second magnetic circuit assembly 5 is more easily driven to drive the fourth voice coil 33.

[0231] At this time, the second side magnet 52 is located between the annular plate 12b and the magnetic conductive member 13, and the annular plate 12b and the magnetic conductive member 13 respectively fix the second side magnet 52, so that the fixing of the second side magnet 52 is more reliable, and the annular plate 12b and the magnetic conductive member 13 respectively magnetically conduct two poles of the second side magnet 52.

[0232] Please refer to Fig. 8 and Fig. 9, Fig. 8 is a front view along A-A in Fig. 2, and Fig. 9 is a sectional view along D-D in Fig. 2.

[0233] In some embodiments, a magnetic gap can be formed between the first center magnet 41 and the second center magnet 51. The first voice coil 22, the second voice coil 23, the third voice coil 32 and the fourth voice coil 33 can be partially located between the first center magnet 41 and the second center magnet 51, respectively.

[0234] That is, the first center magnet 41 and the second center magnet 51 can not have other magnets between them, and the first center magnet 41 and the second center magnet 51 are adjacent and close to each other.

[0235] For example, the first voice coil 22 and the third voice coil 32 can surround the first center magnet 41, and the first voice coil 22 and the third voice coil 32 respectively have a part of the structure located in the magnetic gap 4a of the first magnetic circuit assembly 4, and the first voice coil 22 and the third voice coil 32 respectively have a part of the structure located between the first center magnet 41 and the second center magnet 51. Similarly, the second voice coil 23 and the fourth voice coil 33 can surround the second center magnet 51, and the second voice coil 23 and the fourth voice coil 33 respectively have a part of the structure located in the magnetic gap 5a of the second magnetic circuit assembly 5, and the second voice coil 23 and the fourth voice coil 33 respectively have a part of the structure located between the first center magnet 41 and the second center magnet 51.

[0236] At this time, the distance between the first voice coil 22 and the second voice coil 23 can be small due to the close distance between the first center magnet 41 and the second center magnet 51, so that the contact area of the first voice coil 22 and the second voice coil 23 with the first diaphragm 21 is large, and the unstressed area of the middle part of the first diaphragm 21 is small when the first diaphragm 21 is driven by the first voice coil 22 and the second voice coil 23, so that the possibility of bending deformation of the middle part of the first diaphragm 21 is small; at this time, the moment of inertia of the first vibration assembly 2 is large, and the vibration performance is better, and the sound quality of the sound emitted by the first vibration assembly 2 is also better.

[0237] Similarly, the distance between the third voice coil 32 and the fourth voice coil 33 can be small, so that the contact area of the third voice coil 32 and the fourth voice coil 33 with the second diaphragm 31 is large, and the unstressed area of the middle part of the second diaphragm 31 is small when the second diaphragm 31 is driven by the third voice coil 32 and the fourth voice coil 33, so that the possibility of bending deformation of the middle part of the second diaphragm 31 is small; at this time, the moment of inertia of the second vibration assembly 3 is large, and the vibration performance is better, and the sound quality of the sound emitted by the second vibration assembly 3 is also better.

[0238] For example, the distance between the first center magnet 41 and the second center magnet 51 can be 3mm, 3.5mm, 4mm, etc. In addition, the distance between the first center magnet 41 and the second center magnet 51 can be greater than 1.6mm in order to accommodate other structures. At this time, the first center magnet 41 and the second center magnet 51 are close to each other, and the internal space of the loudspeaker 30 is more fully utilized.

[0239] For example, the distance between the third voice coil 32 and the fourth voice coil 33 can be 1.5mm. In addition, the distance between the third voice coil 32 and the fourth voice coil 33 can be greater than 0.1mm in order to facilitate the installation of the two. At this time, the third voice coil 32 and the fourth voice coil 33 almost fit together, which is conducive to improving the moment of inertia of the second vibration assembly 3, thereby improving the sound quality of the loudspeaker 30.

[0240] It can be understood that the same poles of the first center magnet 41 and the second center magnet 51 can be arranged in the same direction.

[0241] For example, the first central magnet 41 can have a N-pole facing the first diaphragm 21 and a S-pole facing the second diaphragm 31, and the first side magnet 42 can have a S-pole facing the first diaphragm 21 and a N-pole facing the second diaphragm 31. The second central magnet 51 can also have a N-pole facing the first diaphragm 21 and a S-pole facing the second diaphragm 31, and the second side magnet 52 can also have a S-pole facing the first diaphragm 21 and a N-pole facing the second diaphragm 31. In this case, the support plate 12a can be in contact with the S-pole of the first side magnet 42, the S-pole of the first central magnet 41, the S-pole of the second central magnet 51, and the S-pole of the second side magnet 52, and can conduct magnetic flux, thereby facilitating the formation of the magnetic gap 4a of the first magnetic circuit assembly 4 and the magnetic gap 5a of the second magnetic circuit assembly 5. Of course, the magnetic poles of the first central magnet 41, the first side magnet 42, the second central magnet 51, and the second side magnet 52 can be arranged in reverse order compared to the magnetic poles in the present example.

[0242] In other embodiments, a magnet can be provided between the first central magnet 41 and the second central magnet 51, the magnet can have magnetic poles opposite to the magnetic poles of the first central magnet 41, and the magnet can be located in the avoiding space formed by the first support portion 121, the connecting portion 122, and the second support portion 123. The magnet can be used as the magnet of the first side magnet 42 and the magnet of the second side magnet 52.

[0243] In some embodiments, in the arrangement direction of the first diaphragm 21 and the second diaphragm 31, the projection of the third voice coil 32 surrounds the projection of the first voice coil 22, and the projection of the fourth voice coil 33 surrounds the projection of the second voice coil 23. That is, the area of the second voice coil 23 is greater than the area of the first voice coil 22, and the area of the third voice coil 32 is greater than the area of the first voice coil 22. In this case, the arrangement direction of the first diaphragm 21 and the second diaphragm 31 can be parallel to the thickness direction Z. In this case, the distance between the third voice coil 32 and the fourth voice coil 33 can be less than the distance between the first voice coil 22 and the second voice coil 23.

[0244] In some embodiments, in the arrangement direction of the first diaphragm 21 and the second diaphragm 31 (i.e., the thickness direction Z), the vibration height of the first voice coil 22 and the vibration height of the third voice coil 32 can at least partially overlap, and the vibration height of the second voice coil 23 and the vibration height of the fourth voice coil 33 can at least partially overlap.

[0245] For example, in the thickness direction Z, during the vibration of the first diaphragm 21 and the second diaphragm 31, the highest point of the end of the third voice coil 32 away from the second diaphragm 31 can be higher than the highest point of the end of the first voice coil 22 away from the first diaphragm 21, and the highest point of the end of the fourth voice coil 33 away from the second diaphragm 31 can be higher than the highest point of the end of the second voice coil 23 away from the first diaphragm 21.

[0246] When the first diaphragm 21 and the second diaphragm 31 are not vibrating, the end of the first voice coil 22 away from the first diaphragm 21 can be higher than the end of the third voice coil 32 away from the second diaphragm 31, and the end of the second voice coil 23 away from the first diaphragm 21 can be higher than the end of the fourth voice coil 33 away from the second diaphragm 31. But it is not strictly limited thereto.

[0247] At this time, the third voice coil 32 is equivalent to being sleeved outside the first voice coil 22, so that both of them are arranged in the magnetic gap 4a of the first magnetic circuit assembly 4, and the fourth voice coil 33 is equivalent to being sleeved outside the second voice coil 23, so that both of them are arranged in the magnetic gap 5a of the second magnetic circuit assembly 5. Moreover, the third voice coil 32 and the first voice coil 22 multiplex the vibration space, and the fourth voice coil 33 and the second voice coil 23 multiplex the vibration space, so as to facilitate the first voice coil 22, the second voice coil 23, the third voice coil 32 and the fourth voice coil 33 having a larger vibration distance in a limited height, thereby improving the low-frequency sound quality of the loudspeaker 30.

[0248] In some embodiments, the length direction of the first voice coil 22 and the length direction of the second voice coil 23 are respectively parallel to the length direction of the loudspeaker 30, and the arrangement direction of the first voice coil 22 and the second voice coil 23 is parallel to the length direction of the loudspeaker 30; the length direction of the third voice coil 32 and the length direction of the fourth voice coil 33 are respectively parallel to the length direction of the loudspeaker 30, and the arrangement direction of the third voice coil 32 and the fourth voice coil 33 is parallel to the length direction of the loudspeaker 30.

[0249] Among them, the loudspeaker 30 can have a larger aspect ratio, that is, the loudspeaker 30 is in an elongated structure. For example, the aspect ratio of the loudspeaker 30 can be greater than 4:1, such as 28:7, 30:7, 35:8, etc. For ordinary single voice coil driven diaphragm, the aspect ratio of the voice coil at this time can be much greater than 4:1, making it difficult to wind the voice coil.

[0250] In the embodiment, the setting direction of the first voice coil 22 and the second voice coil 23 and the arrangement direction of the two are more adapted to the length direction of the loudspeaker 30, thereby facilitating the first diaphragm 21 to be driven by a proper number of voice coils and simplifying the structure of the loudspeaker 30; and the aspect ratio of the first voice coil 22 and the second voice coil 23 is smaller, facilitating the winding of the first voice coil 22 and the second voice coil 23, thereby facilitating the manufacturing of the loudspeaker 30. Similarly, the setting direction of the third voice coil 32 and the fourth voice coil 33 and the arrangement direction of the two are also more adapted to the length direction of the loudspeaker 30, which can simplify the structure of the loudspeaker 30 and facilitate the manufacturing of the loudspeaker 30. For example, the aspect ratio of the first voice coil 22, the second voice coil 23, the third voice coil 32 and / or the fourth voice coil 33 can be less than 6:1, facilitating the winding.

[0251] Please refer to FIG. 5 and FIG. 10, FIG. 10 is a sectional view along E-E in FIG. 2.

[0252] In some embodiments, the connecting portion 122 can have a first end 1221, a main body portion 1222 and a second end 1223. The first end 1221 and the second end 1223 are arranged along a first direction, which is perpendicular to the arrangement direction of the first diaphragm 21 and the second diaphragm 31, and perpendicular to the arrangement direction of the first support portion 121 and the second support portion 123, i.e. the first direction is parallel to the width direction Y. For example, the first diaphragm 21 and the second diaphragm 31 are arranged along the thickness direction Z, the first support portion 121 and the second support portion 123 are arranged along the length direction X, and the first end 1221 and the second end 1223 of the connecting portion 122 are arranged along the width direction Y.

[0253] The first end 1221, the main body portion 1222 and the second end 1223 of the connecting portion 122 are fixedly connected in sequence. The first end 1221 and the second end 1223 are respectively arranged in a bent manner relative to the main body portion 1222, so that the projections of the first end 1221 and the second end 1223 in the width direction Y have a larger area.

[0254] In the loudspeaker 30, the first end 1221 and the second end 1223 are respectively fixedly connected to the two side walls of the shell 1 opposite to each other. For example, the first end 1221 and the second end 1223 of the connecting portion 122 can be embedded in the side walls of the spider 11, so as to be fixedly connected to the side walls of the spider 11.

[0255] For the spider 11, the spider 11 is a frame structure, and the inside of the spider 11 is a mounting space. The first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 both have magnetic gaps, so that the first center magnet 41 and the first side magnet 42 attract each other in the first direction (width direction Y), and the second center magnet 51 and the second side magnet 52 attract each other in the first direction (width direction Y). This attractive force will act on the two side walls of the spider 11 in the first direction, so that the two side walls have a tendency to move closer to each other and have a slight deformation. When the attractive force is large, the two side walls of the spider 11 will be deformed greatly, so that the magnetic gap 4a of the first magnetic circuit assembly 4 and the magnetic gap 5a of the second magnetic circuit assembly 5 may be invalid. Especially when the size of the shell 1 in the length direction X is greater than the size in the width direction Z, the spider 11 is more likely to be deformed.

[0256] In the present embodiment, the first end 1221 and the second end 1223 of the connecting portion 122 are provided, and the first end 1221 and the second end 1223 are respectively fixedly connected to the spider 11, so as to support the two opposite side walls of the spider 11 in the first direction, so that the spider 11 is not easy to be deformed, thereby the spider 11 has higher reliability, and the sound quality of the loudspeaker 30 is ensured.

[0257] In some other embodiments, the first end 1221 and the second end 1223 can abut against two opposite side walls of the housing 1 in the first direction respectively. In this case, the first end 1221 and the second end 1223 of the connecting part 122 can not be fixedly connected with the side walls of the basin frame 11, and the first end 1221 and the second end 1223 of the connecting part 122 can abut against the basin frame 11 of the housing 1 by assembling the basin frame 11 and the support part 12. In this case, the basin frame 11 and the support part 12 are easy to assemble, thereby facilitating cost reduction.

[0258] In some embodiments, as described above, the first frame body 111 can have the positioning part 1112, and the second frame body 112 can have the clamping part 1122. In the loudspeaker 30, the first end 1221 and the second end 1223 of the connecting part 122 are fixed to the first frame body 111. The positioning part 1112 protrudes towards the second diaphragm 31, and the positioning part 1112 is located between the clamping parts 1122 in the first direction, and the positioning part 1112 abuts against the clamping parts 1122.

[0259] In this case, the connecting part 122 can support the first frame body 111 in the first direction (the width direction Y) to avoid deformation of the first frame body 111, and the positioning part 1112 and the clamping part 1122 are arranged to support the second frame body 112 in the first direction by the first frame body 111, thereby avoiding deformation of the second frame body 112, making the support of the housing 1 to other components more reliable, and making the sound quality of the loudspeaker 30 more stable.

[0260] Please refer to FIG. 11, which is a structural schematic diagram of the second vibration assembly 3 in some other embodiments of the loudspeaker 30 shown in FIG. 4. The second vibration assembly 3 shown in FIG. 11 can include most of the technical features of the second vibration assembly 3 shown in FIG. 4. The following mainly describes the differences between the two, and most of the technical contents of the two are not described in detail.

[0261] The difference between the second vibration assembly 3 of the embodiment shown in FIG. 11 and the second vibration assembly 3 of the embodiment shown in FIG. 4 mainly lies in the position of the fixing part 36. In some embodiments, in the arrangement direction of the first diaphragm 21 and the second diaphragm 31, the fixing part 36 can be located at the middle part of the third voice coil 32 and the fourth voice coil 33.

[0262] For example, in the arrangement direction (i.e. the thickness direction Z) of the first diaphragm 21 and the second diaphragm 31, the distance between the third voice coil 32 and the end of the second diaphragm 31 connected with the fixing part 36 is a first size a, and the distance between the fixing part 36 and the end of the second diaphragm 31 away from the third voice coil 32 is a second size b. The first size a and the second size b can be greater than 1 mm respectively.

[0263] At this time, the installation of the fixing member 36 will not increase the thickness of the second vibration component 3, and the fixing member 36 is spaced from both ends of the third voice coil 32 and the fourth voice coil 33, thus making it easy to install the fixing member 36.

[0264] Please refer to Figure 12, which is a structural schematic diagram of the second vibration component 3 shown in Figure 4 in some other embodiments. The second vibration component 3 shown in Figure 12 may include most of the technical features of the second vibration component 3 shown in Figure 4. The following mainly describes the differences between the two, and the most common technical contents of the two will not be described in detail.

[0265] The main difference between the second vibration component 3 of the embodiment shown in Figure 12 and the second vibration component 3 of the embodiment shown in Figure 4 lies in the shape of the fixing member 36. In some embodiments, the fixing member 36 has a through hole 361, and the area of ​​the through hole 361 is greater than half the area of ​​the fixing member 36 in the arrangement direction of the first diaphragm 21 and the second diaphragm 31 (i.e., the thickness direction Z). The fixing member 36 can be roughly in the shape of an "I".

[0266] The through hole 361 can be located in the middle of the fastener 36. The through hole 361 can be roughly rectangular. By creating the through hole 361, material can be removed from the fastener 36, thereby reducing its weight. The sidewall of the through hole 361 can form connecting ribs or supporting ribs for the fastener 36, giving the fastener 36 good support capacity with low weight.

[0267] In some other embodiments, the retainer 36 can connect to a greater number of voice coils. For example, four voice coils connected to a diaphragm can be arranged in two rows and two columns, and the retainer 36 can be in a cross shape, connecting all four voice coils simultaneously.

[0268] Please refer to Figure 13, which is a structural schematic diagram of the second vibration component 3 shown in Figure 4 in some embodiments. The second vibration component 3 shown in Figure 13 may include most of the technical features of the second vibration component 3 shown in Figure 4. The following mainly describes the differences between the two, and the most common technical contents of the two will not be described in detail.

[0269] The main difference between the second vibration assembly 3 of the embodiment shown in Figure 13 and the second vibration assembly 3 of the embodiment shown in Figure 4 lies in the material of the fixing member 36. In some embodiments, the fixing member 36 can be a colloid. The fixing member 36 can be formed by methods such as dispensing adhesive.

[0270] For example, the fixing member 36 can include a plurality of glue drops, which are respectively fixedly connected to the third voice coil 32 and the fourth voice coil 33. In some other embodiments, the fixing member 36 can also be a strip-shaped glue strip, and the length of the fixing member 36 can be close to the length of the interval between the third voice coil 32 and the fourth voice coil 33. The shape of the fixing member 36 is not strictly limited in the embodiment.

[0271] By setting the fixing member 36 as a glue body, the fixing member 36 can be easily formed when the second vibration assembly 3 is assembled, which is beneficial to reducing the number of parts of the second vibration assembly 3 and saving material cost.

[0272] Please refer to FIG. 14, which is a structural schematic diagram of some other embodiments of the loudspeaker 30 shown in FIG. 1.

[0273] In some embodiments, the loudspeaker 30 of the embodiment shown in FIG. 14 is different from the loudspeaker 30 of the embodiment shown in FIG. 3 in that the first vibration assembly 2 can further include more voice coils, the second vibration assembly 3 can also include more voice coils, and the loudspeaker 30 can include more magnetic circuit assemblies.

[0274] For example, the loudspeaker 30 can further include a third magnetic circuit assembly 6, the first vibration assembly 2 can further include a fifth voice coil 26, and the second vibration assembly 3 can further include a sixth voice coil 37. The third magnetic circuit assembly 6 is fixed to the support 12, one end of the fifth voice coil 26 is fixedly connected to the first diaphragm 21, and the other end is located in the magnetic gap of the third magnetic circuit assembly 6. One end of the sixth voice coil 37 is fixedly connected to the second diaphragm 31, and the other end is located in the magnetic gap of the third magnetic circuit assembly 6.

[0275] It can be understood that the third magnetic circuit assembly 6 can be fixed to the housing 1. The third magnetic circuit assembly 6 can be located on the side of the second magnetic circuit assembly 5 away from the first magnetic circuit assembly 4. The fifth voice coil 26 is located on the side of the second voice coil 23 away from the first voice coil 22. The sixth voice coil 37 is located on the side of the fourth voice coil 33 away from the third voice coil 32.

[0276] At this time, the fifth voice coil 26 and the sixth voice coil 37 are respectively located in the magnetic gap of the third magnetic circuit assembly 6, which is equivalent to multiplexing the third magnetic circuit assembly 6. In addition, the first diaphragm 21 is driven by the first voice coil 22, the second voice coil 23 and the fifth voice coil 26; the second diaphragm 31 is driven by the third voice coil 32, the fourth voice coil 33 and the sixth voice coil 37, which is beneficial to setting a loudspeaker 30 with a larger length-width ratio.

[0277] It can be understood that the support 12 can have a third support portion 127, and the second support portion 123 and the third support portion 127 are connected through a connecting portion 122. The second fixing portion 125 can be connected to the third support portion 127. The structure of the third support portion 127 can refer to the structure of the first support portion 121, and the embodiment will not be described here.

[0278] Fig. 15 is a schematic diagram of the sound production principle of the loudspeaker 30 shown in Fig. 1 in some embodiments.

[0279] In some embodiments, the first vibration assembly 2 and the second vibration assembly 3 of the loudspeaker 30 can vibrate to produce sound respectively. The first diaphragm 21 and the second diaphragm 31 can work cooperatively, so that the loudspeaker 30 can have a sound dipole mode and a sound monopole mode.

[0280] For example, in the sound dipole mode, the first diaphragm 21 and the second diaphragm 31 have the same vibration frequency, the same vibration amplitude, and the same vibration direction, so that the sound waves emitted by the first diaphragm 21 and the second diaphragm 31 are equal in amplitude and opposite in phase (i.e., the phase difference is 180°). That is, the loudspeaker 30 at this time is a dipole loudspeaker, which can form a dipole sound field.

[0281] When the loudspeaker 30 produces sound, two opposite-phase sounds are emitted from the first diaphragm 21 and the second diaphragm 31 respectively and transmitted to the outside of the loudspeaker 30. Specifically, the sound emitted from the first diaphragm 21 is emitted from the top of the temple 102 (see Fig. 1), and the sound emitted from the second diaphragm 31 is emitted from the bottom of the temple 102 (see Fig. 1).

[0282] As shown in Fig. 15, the first diaphragm 21 and the second diaphragm 31 have an "8" directional characteristic around them. According to the sound dipole principle, the human ear is in the effective listening area, and the loudness of the first diaphragm 21 and the second diaphragm 31 is low to meet the listening needs of the wearer. When the sound is transmitted to a far place, the two equal-amplitude and opposite-phase sound waves will cancel each other out in the far field, forming a cancellation area, achieving far-field sound cancellation, and effectively improving the far-field privacy of the electronic device 100.

[0283] For example, in the sound monopole mode, the first diaphragm 21 and the second diaphragm 31 have the same vibration frequency, the same vibration amplitude, and opposite vibration directions, so that the sound waves emitted by the first diaphragm 21 and the second diaphragm 31 are equal in amplitude and the same in phase. That is, the loudspeaker 30 at this time is a monopole loudspeaker 30, which can form a monopole sound field. At this time, the loudspeaker 30 can have a larger compression amount to the air, thereby providing a larger loudness, so that the wearer can obtain a better in-ear loudness experience, and the user's use experience is improved.

[0284] The above is an example of the electronic device being an AR glasses, and the following is an example of the electronic device being a mobile phone.

[0285] Fig. 16 is a structural schematic diagram of another electronic device provided by an embodiment of the present application.

[0286] Exemplarily, the electronic device 100 can include a housing 50, a display screen 60, and a speaker 30. The housing 50 is used to protect the internal electronic devices of the electronic device 100, and the housing 50 serves as the body of the electronic device 100. The housing 50 can include a bezel 501 and a back cover 502, the bezel 501 is connected to the back cover 502 and is arranged around the back cover 502. Exemplarily, the display screen 60 can be fixed to the bezel 501. The display screen 60 is arranged opposite to the back cover 502, and the display screen 60 can be surrounded by the bezel 501 and the back cover 502 to form an internal space of the electronic device 100. The display screen 60 can be a flexible display screen 60 or a rigid display screen 60. The display screen 60 can be an organic light-emitting diode (OLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diodes (QLED) display screen, a liquid crystal display (LCD), and the like.

[0287] The bezel 501 can be provided with a sound hole 503. The number of the sound hole 503 can be one or multiple. The number of the sound hole 503 shown in FIG. 16 is multiple. In other embodiments, the sound hole 503 can also be arranged at the back cover 502, the display screen 60, the connection between the bezel 501 and the display screen 60, or the connection between the bezel 501 and the back cover 502, and the like.

[0288] Exemplarily, the speaker 30 can be installed in the housing 50 and located in the internal space of the electronic device 100. In FIG. 16, the speaker 30 is shown by a dashed line. The speaker 30 can play sound to the outside of the electronic device 100 through the sound hole 503.

[0289] The specific structure of the speaker 30 can refer to the related schemes in the embodiments of FIGS. 2-15, and details are not repeated herein.

[0290] It should be noted that FIG. 16 only schematically shows some components of the electronic device 100, and the actual shape and actual size of these components are not limited by FIG. 16. It should be understood that when the electronic device 100 has other forms, the electronic device 100 can also not include the display screen 60, or the electronic device 100 can include multiple display screens 60.

[0291] It should be noted that the embodiments and features in the present application can be combined with each other, and any combination of features in different embodiments is within the protection scope of the present application, that is, the above-described multiple embodiments can also be combined as needed.

[0292] It should be noted that all the above-mentioned drawings are exemplary illustrations of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not a limitation on the actual product of the present application.

[0293] The above is only some embodiments and implementations of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A loudspeaker (30) characterised in that, The shell (1) includes a frame (11) and a support (12), the support (12) is fixed to the inner side of the frame (11), the first magnetic circuit assembly (4) and the second magnetic circuit assembly (5) are fixed to the support (12) at intervals respectively; The first vibration assembly (2) includes a first diaphragm (21), a first voice coil (22) and a second voice coil (23), the first diaphragm (21) is fixed to the shell (1) and located on one side of the support (12), one end of the first voice coil (22) is fixedly connected to the first diaphragm (21), and the other end is located in the magnetic gap of the first magnetic circuit assembly (4), one end of the second voice coil (23) is fixedly connected to the first diaphragm (21), and the other end is located in the magnetic gap of the second magnetic circuit assembly (5); The second vibration assembly (3) includes a second diaphragm (31), a third voice coil (32) and a fourth voice coil (33), the second diaphragm (31) is fixed to the shell (1) and located on the other side of the support (12), one end of the third voice coil (32) is fixedly connected to the second diaphragm (31), and the other end is located in the magnetic gap of the first magnetic circuit assembly (4), one end of the fourth voice coil (33) is fixedly connected to the second diaphragm (31), and the other end is located in the magnetic gap of the second magnetic circuit assembly (5). The first magnetic circuit assembly (4) includes a first center magnet (41) and a first side magnet (42), the first side magnet (42) is located on the side of the first center magnet (41) and forms a magnetic gap; the second magnetic circuit assembly (5) includes a second center magnet (51) and a second side magnet (52), the second side magnet (52) is located on the side of the second center magnet (51) and forms a magnetic gap; 2. The loudspeaker (30) as defined in claim 1, characterized in that The support (12) includes a first support portion (121), a connecting portion (122) and a second support portion (123) connected in sequence, the first support portion (121) and the second support portion (123) are respectively recessed towards the second diaphragm (31), and an avoidance space is formed between the first support portion (121), the connecting portion (122) and the second support portion (123); the first center magnet (41) is installed on the first support portion (121), and the second center magnet (51) is installed on the second support portion (123); The third voice coil (32) surrounds the first support portion (121), the fourth voice coil (33) surrounds the second support portion (123), and part of the third voice coil (32) and part of the fourth voice coil (33) are located in the avoidance space; the first voice coil (22) and the second voice coil (23) are respectively located on both sides of the avoidance space. ​ 3. The loudspeaker (30) of claim 2, characterized in that The support piece (12) further comprises a first fixing part (124) and a second fixing part (125), the first fixing part (124) is connected with the first support part (121), and the second fixing part (125) is connected with the second support part (123); the first fixing part (124) and the second fixing part (125) are fixedly connected with the basin frame (11) respectively; The first side magnet (42) is partially mounted on the surface of the first fixing part (124) facing the second diaphragm (31), and the first center magnet (41) is mounted on the surface of the first support part (121) facing the first diaphragm (21); the second side magnet (52) is partially mounted on the surface of the second fixing part (125) facing the second diaphragm (31), and the first center magnet (41) is mounted on the surface of the second support part (123) facing the first diaphragm (21); the support piece (12) can conduct magnetism.

4. The loudspeaker (30) as defined in claim 3, characterized in that The support piece (12) comprises a support plate (12a) and an annular plate (12b), the support plate (12a) and the annular plate (12b) are arranged at intervals, the first fixing part (124), the first support part (121), the connecting part (122), the second support part (123) and the second fixing part (125) are formed on the support plate (12a), and the first side magnet (42) and the second side magnet (52) are fixed on the surface of the annular plate (12b) facing the second diaphragm (31) respectively.

5. The loudspeaker (30) as defined in claim 4, characterized in that The support plate (12a) is an integrally formed structural member; and / or, the support plate (12a) is fixed to the basin frame (11) and is an integral structural member with the basin frame (11).

6. The loudspeaker (30) of claim 2, wherein The shell (1) further comprises a magnetically conductive piece (13), the magnetically conductive piece (13) is fixed to the basin frame (11), the magnetically conductive piece (13) is located between the first magnetic circuit assembly (4) and the second diaphragm (31), and the first side magnet (42) and the second side magnet (52) are fixed on the surface of the magnetically conductive piece (13) facing the first diaphragm (21) respectively.

7. The loudspeaker (30) of claim 2, characterized in that The connecting part (122) has a first end (1221) and a second end (1223), the first end (1221) and the second end (1223) are arranged along a first direction, the first direction is perpendicular to the arrangement direction of the first diaphragm (21) and the second diaphragm (31) and perpendicular to the arrangement direction of the first support part (121) and the second support part (123); The first end (1221) and the second end (1223) abut against two opposite side walls of the shell (1) in the first direction respectively; or, the first end (1221) and the second end (1223) are fixedly connected with the two opposite side walls of the shell (1) in the first direction respectively.

8. The loudspeaker (30) of claim 7, characterized in that The yoke (11) comprises a first frame body (111) and a second frame body (112), the first frame body (111) and the second frame body (112) are fixedly connected, the first diaphragm (21) is fixed to the first frame body (111), and the second diaphragm (31) is fixed to the second frame body (112); the first end (1221) and the second end (1223) are fixed to the first frame body (111); The first frame body (111) has a positioning portion (1112) on each of the two wall plates opposite in the first direction, and the positioning portion (1112) protrudes towards the second diaphragm (31); the second frame body (112) has a clamping portion (1122) on each of the two wall plates opposite in the first direction, and the positioning portion (1112) is located between the clamping portions (1122) in the first direction, and the positioning portion (1112) abuts against the clamping portions (1122).

9. The loudspeaker (30) as defined in claim 2, characterized in that The first center magnet (41) and the second center magnet (51) form a magnetic gap therebetween, and the first voice coil (22), the second voice coil (23), the third voice coil (32) and the fourth voice coil (33) are respectively partially located between the first center magnet (41) and the second center magnet (51).

10. The loudspeaker (30) of claim 9, characterized in that The distance between the first center magnet (41) and the second center magnet (51) is less than 4 mm, and the distance between the third voice coil (32) and the fourth voice coil (33) is less than 2 mm.

11. The loudspeaker (30) according to any of claims 1 to 10, characterized in that In the arrangement direction of the first diaphragm (21) and the second diaphragm (31), the projection of the third voice coil (32) surrounds the projection of the first voice coil (22), and the projection of the fourth voice coil (33) surrounds the projection of the second voice coil (23); and the vibration height of the first voice coil (22) at least partially coincides with the vibration height of the third voice coil (32), and the vibration height of the second voice coil (23) at least partially coincides with the vibration height of the fourth voice coil (33).

12. The loudspeaker (30) according to any one of claims 1 to 11, characterized in that The length direction of the first voice coil (22) and the length direction of the second voice coil (23) are respectively parallel to the length direction of the loudspeaker (30), and the arrangement direction of the first voice coil (22) and the second voice coil (23) is parallel to the length direction of the loudspeaker (30); The length direction of the third voice coil (32) and the length direction of the fourth voice coil (33) are respectively parallel to the length direction of the loudspeaker (30), and the arrangement direction of the third voice coil (32) and the fourth voice coil (33) is parallel to the length direction of the loudspeaker (30).

13. The loudspeaker (30) according to any one of claims 1 to 12, characterized in that The loudspeaker (30) has a fixing member (36) fixedly connecting the side wall opposite to the third voice coil (32) and the fourth voice coil (33).

14. The loudspeaker (30) as defined in claim 13, characterized by In the arrangement direction of the first diaphragm (21) and the second diaphragm (31), the distance between the fixing member (36) and the end of the first diaphragm (21) connected with the third voice coil (32) is a first size, and the distance between the fixing member (36) and the end of the first diaphragm (21) away from the third voice coil (32) is a second size, both the first size and the second size are greater than 1mm.

15. The loudspeaker (30) as defined in claim 13, characterized by The fixing member (36) is provided with a through hole (361), and in the arrangement direction of the first diaphragm (21) and the second diaphragm (31), the area of the through hole (361) is greater than half of the area of the fixing member (36).

16. The loudspeaker (30) according to any of claims 13 to 15, characterized in that The fixing member (36) can be a circuit board, and the fixing member (36) is electrically connected with the third voice coil (32) and the fourth voice coil (33).

17. The loudspeaker (30) according to any one of claims 13 to 15, characterized in that The fixing member (36) is a colloid.

18. The loudspeaker (30) according to any one of claims 1 to 17, characterized in that The first vibration assembly (2) further comprises a first reinforcing sheet (25), the first reinforcing sheet (25) is fixed to one side of the first diaphragm (21) facing the second diaphragm (31), the first reinforcing sheet (25) is located in the interval between the first voice coil (22) and the second voice coil (23), and in the arrangement direction of the first voice coil (22) and the second voice coil (23), the length of the first reinforcing sheet (25) is greater than the interval between the first voice coil (22) and the second voice coil (23). And / or, the second vibration assembly (3) further comprises a second reinforcing sheet (35), the second reinforcing sheet (35) is fixed to one side of the second diaphragm (31) facing the first diaphragm (21), the second reinforcing sheet (35) is located in the interval between the third voice coil (32) and the fourth voice coil (33), and in the arrangement direction of the third voice coil (32) and the fourth voice coil (33), the length of the second reinforcing sheet (35) is greater than the interval between the third voice coil (32) and the fourth voice coil (33).

19. The loudspeaker (30) according to any one of claims 1 to 18, characterized in that The first vibration assembly (2) further comprises a first centering sheet (24), one side of the first centering sheet (24) is fixedly connected with the first diaphragm (21), the other side is fixedly connected with the first voice coil (22) and the second voice coil (23), and the first centering sheet (24) is electrically connected with the first voice coil (22) and the second voice coil (23). And / or, the second vibration assembly (3) further comprises a second centering sheet (34), one side of the second centering sheet (34) is fixedly connected with the second diaphragm (31), the other side is fixedly connected with the third voice coil (32) and the fourth voice coil (33), and the second centering sheet (34) is electrically connected with the third voice coil (32) and the fourth voice coil (33).

20. The loudspeaker (30) according to any one of claims 1 to 19, characterized in that The loudspeaker (30) further comprises a third magnetic circuit assembly (6), the first vibrating assembly (2) further comprises a fifth voice coil (26), the second vibrating assembly (3) further comprises a sixth voice coil (37), the third magnetic circuit assembly (6) is fixed to the support (12), one end of the fifth voice coil (26) is fixedly connected to the first diaphragm (21), the other end of the fifth voice coil (26) is located in a magnetic gap of the third magnetic circuit assembly (6), one end of the sixth voice coil (37) is fixedly connected to the second diaphragm (31), the other end of the sixth voice coil (37) is located in the magnetic gap of the third magnetic circuit assembly (6).

21. The loudspeaker (30) according to any one of claims 1 to 20, characterized in that The vibrating directions of the first diaphragm (21) and the second diaphragm (31) are parallel, and the first diaphragm (21) and the second diaphragm (31) are used to form an acoustic dipole or an acoustic monopole.

22. An electronic device, comprising: A device comprising a body and a loudspeaker (30) as claimed in any one of claims 1 to 21, the loudspeaker (30) being fixed to the body.

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