Loudspeaker and electronic device

Abstract

The present application relates to the field of audio technology, and in particular to a loudspeaker and an electronic device. Provided in the embodiments of the present application is a loudspeaker, comprising a housing, a first vibration assembly, a second vibration assembly, a first magnetic circuit assembly, a second magnetic circuit assembly, and a magnetic conductive member. The magnetic conductive member is fixed to the inner side of the housing. The loudspeaker comprises two vibration assemblies which are located on two sides of the magnetic conductive member and can thus generate sound independently. A first voice coil can drive a first diaphragm to vibrate, and a second voice coil can drive a second diaphragm to vibrate, such that the cooperation of the first diaphragm and the second diaphragm enables the loudspeaker to have better low-frequency loudness, thereby improving the sound quality of the loudspeaker. Since the magnetic conductive member is provided, the magnetic circuit design is simplified, and the first magnetic circuit assembly and the second magnetic circuit assembly can also be supported so as to simplify the design of the supporting structure of the loudspeaker, which is conducive to the thinning design of the loudspeaker, thereby improving the adaptability of the loudspeaker to the application environment.

Description

Speakers and electronic devices Technical Field

[0001] The present application relates to the field of audio technology, and in particular to a speaker and an electronic device. Background Art

[0002] In recent years, the wearable smart product market has garnered increasing attention, with head-mounted wearables, particularly smart glasses, proving popular. However, due to the physical constraints of glasses, the temples are becoming increasingly thinner and narrow. This also limits the placement of speakers on the temples, forcing them to be small and elongated. This can lead to insufficient low-frequency loudness and poor sound quality.

[0003] Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a speaker and an electronic device.

[0005] In the first aspect, the present application provides a loudspeaker, comprising a shell, a first vibration component, a second vibration component, a first magnetic circuit component, a second magnetic circuit component and a magnetic conductive part, wherein the magnetic conductive part is fixed to the inner side of the shell; the first vibration component comprises a first diaphragm and a first voice coil, the first diaphragm is fixed to the shell and is located on one side of the magnetic conductive part, the first magnetic circuit component is fixed to the side of the magnetic conductive part 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 component; the second vibration component comprises a second diaphragm and a second voice coil, the second diaphragm is fixed to the shell and is located on the other side of the magnetic conductive part, the second magnetic circuit component is fixed to the side of the magnetic conductive part 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 component.

[0006] In this embodiment, the speaker includes two sets of vibration components, which are located on two sides of the magnetic conductive part, so that the two sets of vibration components can make sounds independently. The first voice coil can drive the first diaphragm to vibrate, and the second voice coil can drive the second diaphragm to vibrate. The cooperation between the first diaphragm and the second diaphragm can make the speaker have better low-frequency loudness, thereby improving the sound quality of the speaker.

[0007] In addition, the magnetic conductive member can conduct the magnetic circuit of the first magnetic circuit component and support the first magnetic circuit component, thereby reducing the supporting structure for the first magnetic circuit component, which is conducive to simplifying the speaker structure and reducing the thickness of the speaker, which is conducive to a thinner speaker design. The magnetic conductive member can conduct the magnetic circuit of the second magnetic circuit component and support the second magnetic circuit component, thereby reducing the supporting structure for the second magnetic circuit component, which is conducive to simplifying the speaker structure and reducing the thickness of the speaker, which is conducive to a thinner speaker design.

[0008] In some embodiments, the magnetic conductive part includes a first magnetic conductive part, a connecting part and a second magnetic conductive part, the connecting part fixedly connects the first magnetic conductive part and the second magnetic conductive part, and the first magnetic conductive part and the second magnetic conductive part are arranged in the length direction of the speaker; the first magnetic circuit component is fixed to the first magnetic conductive part, the second magnetic circuit component is fixed to the second magnetic conductive part, the first magnetic conductive part is parallel to the second magnetic conductive part, and the first magnetic conductive part and the second magnetic conductive part are staggered so that the distance between the first magnetic conductive part and the first diaphragm is greater than the distance between the second magnetic conductive part and the first diaphragm.

[0009] In this embodiment, the length of the magnetic conductive part is parallel to the length direction of the speaker, and the first magnetic conductive part and the second magnetic conductive part are offset and parallel, so that the first magnetic circuit component and the second magnetic circuit component overlap in the thickness direction, so that the first magnetic circuit component and the second magnetic circuit component are arranged side by side. The first magnetic circuit component and the second magnetic circuit component are equivalent to reusing the space in the thickness direction, which is conducive to the thin design of the speaker.

[0010] In some embodiments, in the thickness direction of the speaker, the overlapping thickness of the first magnetic circuit component and the second magnetic circuit component is greater than 80% of the thickness of the second magnetic circuit component.

[0011] For example, the thickness of the first magnetic circuit component and the thickness of the second magnetic circuit component can be the same. The top surface of the first central magnetic conductive member can be flush or nearly flush with the top surface of the second magnetic conductive member, and the bottom surface of the second central magnetic conductive member can be flush or nearly flush with the bottom surface of the first magnetic conductive member. In this case, in the thickness direction, only the thickness of the first magnetic circuit component or the second magnetic circuit component is used to realize the arrangement of the first magnetic circuit component and the second magnetic circuit component, which effectively utilizes the thickness space, reduces the thickness of the speaker, and improves the integration of the speaker.

[0012] In this embodiment, the first magnetic circuit component and the second magnetic circuit component can make greater use of the space in the thickness direction, thereby reducing the thickness of the speaker to a greater extent.

[0013] In some embodiments, a first magnetic gap is formed between the first magnetic circuit component and the second magnetic circuit component, and a portion of the structure of the first voice coil and a portion of the structure of the second voice coil are located in the first magnetic gap.

[0014] In this embodiment, since the first and second magnetic circuit assemblies can be arranged side by side, a first magnetic gap can be formed between adjacent magnets in the first and second magnetic circuit assemblies. When portions of the first and second voice coil structures are located within the first magnetic gap, both the first and second voice coils can be driven within the first magnetic gap, thereby vibrating. The first and second magnetic circuit assemblies cooperate with each other, with the first voice coil being driven by the magnetic field formed by the first and second magnetic circuit assemblies, and the second voice coil being driven by the magnetic field formed by the first and second magnetic circuit assemblies. Both the first and second magnetic circuit assemblies contain reused magnets. Therefore, the provision of the first magnetic gap can reduce the number of magnets in the first and second magnetic circuit assemblies, thereby reducing the size of the speaker and simplifying its overall structure.

[0015] In some embodiments, the first magnetic circuit assembly includes a first central magnet and a first side magnet, the first side magnet is located on the circumferential side of the first central magnet, and the first central magnet and the first side magnet form a magnetic gap of the first magnetic circuit assembly; the second magnetic circuit assembly includes a second central magnet and a second side magnet, the second side magnet is located on the circumferential side of the second central magnet, and the second central magnet and the second side magnet form a magnetic gap of the second magnetic circuit assembly; a first magnetic gap is formed between the first central magnet and the second central magnet.

[0016] The first central magnet and the second central magnet have like-named magnetic poles that are arranged in opposite directions, thereby forming a magnetic circuit between the first central magnet and the second central magnet.

[0017] In this embodiment, the first central magnet and the second central magnet are positioned adjacent to each other, eliminating the need for an additional magnet between them. Because the first magnetic circuit assembly and the second magnetic circuit assembly are arranged along the length of the speaker, the lengths of the first magnetic circuit assembly and the second magnetic circuit assembly can be reduced, thereby reducing the length of the speaker.

[0018] In some embodiments, a minimum distance between the first central magnet and the second central magnet is less than or equal to 2 mm.

[0019] In this embodiment, the minimum distance between the first center magnet and the second center magnet is also the minimum distance of the first magnetic gap. By setting a smaller spacing, the magnetic gap between the first center magnet and the second center magnet is reduced, thereby improving the driving efficiency of the first magnetic gap on the first voice coil and the second voice coil.

[0020] In some embodiments, the connecting portion is located in the first magnetic gap, and the connecting portion is located between the first voice coil and the second voice coil.

[0021] In this embodiment, in addition to connecting the first magnetic conductive portion and the second magnetic conductive portion, the connecting portion can also isolate the first voice coil and the second voice coil, reducing the possibility of collision between the first voice coil and the second voice coil when the speaker is operating or subjected to external force, thereby improving the reliability of the speaker.

[0022] In some embodiments, the thickness of the connecting portion is smaller than that of the first magnetic conductive portion and / or the second magnetic conductive portion; or, the thickness of the connecting portion is less than or equal to 0.35 mm, and the thickness of the first magnetic conductive portion and / or the thickness of the second magnetic conductive portion is greater than or equal to 0.35 mm.

[0023] In this embodiment, when the connecting part is located in the first magnetic gap, the thickness of the connecting part, the thickness of the first magnetic conductive part and the thickness of the second magnetic conductive part are reasonably set, so as to reduce the influence on the strength of the magnetic conductive part, thereby reducing the width of the first magnetic gap, improving the sensitivity of the speaker and thus improving the sound quality of the speaker.

[0024] In some embodiments, the connecting portion is provided with a communication hole, the communication hole communicating with the spaces on both sides of the connecting portion;

[0025] The cross-sectional area of ​​the communication hole in the direction perpendicular to the length of the speaker is larger than half of the cross-sectional area of ​​the first voice coil or the second voice coil in the direction perpendicular to the length of the speaker; or, there are multiple communication holes, and in the arrangement direction of the first voice coil and the second voice coil, the multiple communication holes cover at least half of the area of ​​the second voice coil.

[0026] In this embodiment, the connecting portion may block the magnetic circuit within the first magnetic gap. By opening a connecting hole in the connecting portion, a magnetic circuit is directly formed between the first center magnet and the second center magnet, thereby improving the magnetic strength of the first magnetic gap, which is beneficial to improving the sound quality of the speaker.

[0027] In some embodiments, the connecting portion further includes a reinforcing portion, the reinforcing portion is made of metal material, and the reinforcing portion covers the surface of the connecting portion.

[0028] In this embodiment, the reinforcement portion may also be a thin film layer, thereby improving the overall structural strength of the magnetic conductive component, making the magnetic conductive component have a stronger load-bearing capacity and a more stable support.

[0029] In some embodiments, the reinforcement portion is made of insulating material and fills the communicating hole.

[0030] In this embodiment, the reinforcement does not possess magnetic conductivity and does not block the magnetic path between the first and second central magnets, thereby preventing any impact on the speaker's sound quality. Furthermore, the reinforcement enhances the strength of the magnetic conductor at the connection. Because the reinforcement fills the connecting hole, the connection and the space on either side of the reinforcement are isolated, preventing air from flowing through, thereby improving the speaker's sound quality.

[0031] In some embodiments, the magnetic conductive component is an integrated structural component.

[0032] In this embodiment, the manufacture of the magnetic conductive component is relatively simple, and the structural strength of the magnetic conductive component is high, and the supporting performance of the magnetic conductive component is good.

[0033] In some embodiments, a first voice coil and a first magnetic circuit assembly are arranged in a group, a second voice coil and a second magnetic circuit assembly are arranged in a group, and a group of second voice coils and second magnetic circuit assemblies and at least one group of first voice coils and first magnetic circuit assemblies are arranged alternately along a first direction, and the first direction is parallel to the length direction of the speaker.

[0034] The first magnetic circuit assembly and the first voice coil in the same group can work together, the first magnetic circuit assembly is used to drive the first voice coil to vibrate, thereby causing the first voice coil to vibrate the first diaphragm. Of course, the second magnetic circuit assembly and the second voice coil in the same group can work together, the second magnetic circuit assembly is used to drive the second voice coil to vibrate, thereby causing the second voice coil to vibrate the second diaphragm.

[0035] In this embodiment, multiple sets of first voice coils and first magnetic circuit assemblies can be provided. These sets can simultaneously drive the first diaphragm, resulting in a more balanced driving force on the first diaphragm. This helps prevent the first diaphragm from vibrating offset and facilitates the proper arrangement of the first and second voice coils, ensuring balanced force on both diaphragms during vibration. Furthermore, multiple sets of first voice coils and first magnetic circuit assemblies can provide greater driving force for the first diaphragm, thereby improving the sound quality of the speaker. Furthermore, the first direction being parallel to the length of the speaker facilitates a slender design, improving the speaker's adaptability to various application scenarios.

[0036] In some embodiments, the first voice coil and the first magnetic circuit assembly are provided in two sets, and the second voice coil and the second magnetic circuit assembly are provided in one set.

[0037] In this embodiment, a second voice coil and a second magnetic circuit assembly are positioned between two first voice coil and first magnetic circuit assemblies. The two first voice coil and first magnetic circuit assemblies are symmetrically arranged to provide a more balanced force on the first diaphragm during vibration. The second voice coil can be positioned in the middle of the second diaphragm to further balance the force on the second diaphragm.

[0038] In some embodiments, there are three groups of first voice coils and first magnetic circuit assemblies, and there are two groups of second voice coils and second magnetic circuit assemblies.

[0039] In this embodiment, the number of groups of first voice coils and first magnetic circuit assemblies, and the number of groups of second voice coils and second magnetic circuit assemblies are large. Multiple first voice coils drive the first diaphragm, and have sufficient driving force and driving stability for the first diaphragm. Multiple second voice coils drive the second diaphragm, and have sufficient driving force and driving stability for the second diaphragm, so that the speaker has higher sound quality. At this time, the aspect ratio of the speaker is larger, which is conducive to further reducing the width of the speaker and making the speaker adaptable to different application scenarios.

[0040] 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 an acoustic dipole or an acoustic monopole.

[0041] In this embodiment, in acoustic dipole mode, the dipole principle is used to place the human ear in the effective listening area, ensuring that the first and second diaphragms have low loudness, thereby meeting the wearer's auditory needs. When sound is transmitted to a distant location, the two equal-amplitude, anti-phase sound waves cancel each other out in the far field, forming a sound-cancelling zone and achieving far-field noise cancellation, effectively improving the far-field privacy of the electronic device.

[0042] In the acoustic monopole mode, the speaker can compress the air more, thereby providing a louder sound, allowing the wearer to obtain a better in-ear loudness experience and enhance the user experience.

[0043] In some embodiments, the length direction of the first voice coil and the second voice coil is parallel to the arrangement direction of the first voice coil and the second voice coil.

[0044] In this embodiment, by setting the length direction of the first voice coil and the second voice coil, the width direction of the loudspeaker is further reduced, which is beneficial to improving the rationality of the structure of the loudspeaker when it is designed with a high aspect ratio.

[0045] In a second aspect, the present application provides an electronic device, comprising a body and a speaker as provided in any of the above embodiments, wherein the speaker is fixed to the body.

[0046] In this embodiment, the electronic device can have better low-frequency loudness and better sound quality when making sounds. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0048] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0049] FIG2 is a schematic structural diagram of the speaker shown in FIG1 ;

[0050] FIG3 is a cross-sectional view taken along AA in FIG2 ;

[0051] FIG4 is a schematic diagram of the exploded structure of the speaker shown in FIG2 ;

[0052] FIG5 is a cross-sectional view of the speaker shown in FIG2 taken along line BB;

[0053] FIG6 is a cross-sectional view of the loudspeaker shown in FIG3 from another perspective;

[0054] FIG7 is a schematic structural diagram of the magnetic conductive member of the speaker shown in FIG2 ;

[0055] FIG8 is a schematic structural diagram of the magnetic conductive member shown in FIG6 in other embodiments;

[0056] FIG9 is a schematic structural diagram of the magnetic conductive member shown in FIG6 in some other embodiments;

[0057] FIG10 is a schematic structural diagram of the magnetic conductive member shown in FIG6 in some other embodiments;

[0058] FIG11 is a schematic diagram of the speaker shown in FIG3 achieving far-field noise cancellation;

[0059] FIG12 is a schematic diagram of the internal structure of the speaker of the electronic device shown in FIG1 in other embodiments;

[0060] FIG13 is a schematic structural diagram of another electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0062] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood in a broad sense. For example, "connected" can mean detachably connected or non-detachably connected; it can mean directly connected or indirectly connected through an intermediary. "Multiple" means at least two.

[0063] The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", "top", "bottom", "side", etc., are only references to the directions in the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0064] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0065] In the embodiments of the present application, the limitations of the relative position relationship mentioned, such as parallel, perpendicular, aligned, etc., are all for the current state of the art, rather than absolutely strict limitations, and a small amount of deviation is allowed, and it is possible to be approximately parallel, approximately perpendicular, approximately aligned, etc. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 degrees and 100 degrees.

[0066] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0067] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0068] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0069] The present application provides a loudspeaker and an electronic device. The loudspeaker includes a housing, a first vibrating assembly, a second vibrating assembly, a first magnetic circuit assembly, a second magnetic circuit assembly, and a magnetic conductive member, wherein the magnetic conductive member is fixed to the inner side of the housing; the first vibrating assembly includes a first diaphragm and a first voice coil, wherein the first diaphragm is fixed to the housing and is located on one side of the magnetic conductive member, the first magnetic circuit assembly is fixed to the side of the magnetic conductive member 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 vibrating assembly includes a second diaphragm and a second voice coil, wherein the second diaphragm is fixed to the housing and is located on the other side of the magnetic conductive member, the second magnetic circuit assembly is fixed to the side of the magnetic conductive member 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 loudness and good sound quality.

[0070] The electronic device may be augmented reality (AR) glasses, AR helmets or virtual reality (VR) glasses, tablet computers, mobile phones, reading pens, selfie sticks, bracelets, smart watches, and other electronic devices that need to use speakers to output audio.

[0071] The following is a specific explanation using the example of an electronic device being AR glasses.

[0072] Please refer to FIG1 , which is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

[0073] In some embodiments, the electronic device 100 includes 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 both electrically connected to the circuit board 40, which is used to control the display of the display device 20 and the sound of the speaker 30.

[0074] The frame 10 includes a frame 101 and temples 102 connected to the frame 101. There are two temples 102, each connected to opposite ends of the frame 101. It should be noted that in other embodiments, the frame 10 may also include a frame 101 and a fixing strap connected to the frame 101, and this application does not specifically limit this.

[0075] The material of the frame 101 includes but is not limited to metal, plastic, resin or natural materials, etc. It should be understood that the frame 101 is not limited to the half-frame frame shown in FIG1 , but may also be a full-frame or frameless frame.

[0076] In this embodiment, there are two display devices 20, and the two display devices 20 have the same structure. Specifically, the two display devices 20 are respectively mounted on the frame 101. When the electronic device 100 is worn on the user's head, one display device 20 corresponds to the user's left eye, and the other display device 20 corresponds to the user's right eye. In this case, the user can view virtual scenes or real scenes 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 be one or more, and this application does not specifically limit this.

[0077] In this embodiment, the display device 20 is mounted on the frame 101 and electrically connected to the circuit board 40. In this embodiment, the circuit board 40 can be mounted inside the temple 102. There can be two circuit boards 40, one located in each temple 102 and electrically connected to its corresponding display device 20. Of course, in other embodiments, there can be only one circuit board 40, located in one of the temples 102.

[0078] Of course, in implementation scenarios of other embodiments, the circuit board 40 can also be installed on the frame 101.

[0079] The 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. When the electronic device 100 is in the open state (as shown in FIG1 ), the two temples 102 rotate relative to the frame 101 until they are opposite to each other. At this time, the two temples 102 of the electronic device 100 can be respectively placed on the user's ears, and the crossbar can be placed on the user's nose bridge to be worn on the user's head. When the electronic device 100 is in the folded state, the two temples 102 rotate relative to the frame 101 until they at least partially overlap each other and are accommodated inside the frame 101. At this time, the electronic device 100 can be stored.

[0080] It should be noted that the terms "inside" and "outside" used in this application to refer to electronic device 100 are primarily used to describe the orientation of electronic device 100 when worn on the user's head. When worn by a user, the orientation closer to the user's head is considered "inside," while the orientation farther from the user's head is considered "outside." These terms do not limit the orientation of electronic device 100 in other scenarios.

[0081] It is understandable 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, and this application does not make specific limitations on this.

[0082] It is understandable that the two temples 102 in this embodiment have the same structure. Of course, in other embodiments, the structures of the two temples 102 may also be different.

[0083] Please refer to Figures 2 to 4 in combination. Figure 2 is a structural diagram of the speaker 30 shown in Figure 1, Figure 3 is a cross-sectional view taken along AA in Figure 2, and Figure 4 is an exploded structural diagram of the speaker 30 shown in Figure 2.

[0084] In some embodiments, the speaker 30 may include a housing 1, a first vibrating assembly 2, a second vibrating assembly 3, a first magnetic circuit assembly 4, a second magnetic circuit assembly 5, and a magnetic conductive member 6. For ease of description, the speaker 30 is defined as having a length direction X, a width direction Y, and a thickness direction Z, with each of these directions being perpendicular to each other. It is understood that the speaker 30 and its components or structures are defined as having a side closer to the first diaphragm of the first vibrating assembly 2 as the "top" and a side farther from the first diaphragm of the first vibrating assembly 2 as the "bottom."

[0085] In some examples, the housing 1 can be roughly frame-shaped. For example, the housing 1 can be a rectangular frame with a hollowed-out center. The interior of the housing 1 can form a mounting cavity, which can accommodate components of the speaker 30. In this case, the housing 1 serves as a support structure for the speaker 30. In some examples, the housing 1 can also be referred to as a frame. In other embodiments, the housing 1 can also be a frame of other shapes, such as a circular frame, etc., and this is not strictly limited in the present embodiment.

[0086] The housing 1 may include a top shell 11 and a bottom shell 12. Both the top shell 11 and the bottom shell 12 may be roughly frame structures, and the sizes of the top shell 11 and the bottom shell 12 may be roughly the same. For example, the top shell 11 and the bottom shell 12 may be butted together so that the top shell 11 and the bottom shell 12 are fixedly connected, thereby forming a complete frame structure. In this case, the top shell 11 and the bottom shell 12 are arranged separately, which facilitates the molding of the top shell 11 and the bottom shell 12 and facilitates assembly. In some other embodiments, the housing 1 may also be an integrally molded structural member, which is not strictly limited in this embodiment.

[0087] The housing 1 may further include a protrusion 111 (as shown in FIG4 ). The protrusion 111 may be formed on the top housing 11, located on the underside of the top housing 11, and facing the bottom housing 12. The protrusion 111 is used to connect the top housing 11 and the bottom housing 12. The number of protrusions 111 may be multiple. For example, when the top housing 11 is a rectangular frame, the number of protrusions 111 may be four, with one protrusion 111 provided at each of the four corners of the top housing 11.

[0088] In some examples, the magnetic conductive member 6 can be fixed inside the housing 1. In some examples, the magnetic conductive member 6 can be located inside the space occupied by the housing 1, making the structure of the speaker 30 more regular. In other examples, the magnetic conductive member 6 can also be mostly located inside the housing 1. For example, the magnetic conductive member 6 can be 70% located inside the mounting cavity of the housing 1, and the remaining structure of the magnetic conductive member 6 can be located outside the housing 1, thereby facilitating the reliable fixing of the magnetic conductive member 6 to the housing 1.

[0089] The magnetic conductive member 6 can be roughly in the form of a bent plate structure, with both ends of the magnetic conductive member 6 fixed to the housing 1. The magnetic conductive member 6 can divide the installation cavity of the housing 1 into a top space and a bottom space. The top space and the bottom space can be used to install different components. In some examples, the ends of the magnetic conductive member 6 can be clamped between the top shell 11 and the bottom shell 12 and fixedly connected to both the top shell 11 and the bottom shell 12, thereby fixing the magnetic conductive member 6 to the housing 1.

[0090] The magnetic member 6 can be made of a magnetic material, such as an iron-containing alloy. The magnetic member 6 can be used to conduct magnetism. When a magnetic body is provided on the magnetic member 6, a magnetic circuit can be formed inside the magnetic member 6, which is beneficial for designing the magnetic circuit of the speaker 30.

[0091] In some embodiments, the first vibration component 2 can be located on one side of the magnetic conductive member 6, and the first magnetic circuit component 4 can be located on the same side of the magnetic conductive member 6 as the first vibration component 2. For example, both the first vibration component 2 and the first magnetic circuit component 4 can be located on the top side of the magnetic conductive member 6.

[0092] In some examples, the first vibration component 2 may include a first diaphragm 21 and a first voice coil 22. The first diaphragm 21 is fixed to the housing 1 and is located on one side of the magnetic conductive member 6. The first magnetic circuit component 4 is fixed to the side of the magnetic conductive member 6 facing the first diaphragm 21. One end of the voice coil is fixedly connected to the first diaphragm 21, and the other end is located in the magnetic gap 45 of the first magnetic circuit component 4.

[0093] Exemplarily, the first diaphragm 21 is fixedly connected to the top shell 11. The first diaphragm 21 may be a rectangular structure, and the first diaphragm 21 may be fixed to the annular surface on the top of the top shell 11.

[0094] Among them, the first diaphragm 21 may include a vibration part 211, a folding ring part 212 and a fixed part 213. The vibration part 211, the folding ring part 212 and the fixed part 213 are fixedly connected in sequence. The vibration part 211 may be a rectangular structure. The folding ring part 212 surrounds the outer peripheral side of the vibration part 211 and is connected to the vibration part 211; the folding ring part 212 may be deformable, for example, the folding ring part 212 may have an annular structure with an overall curved surface, and the annular structure with an curved surface is easy to deform and stretch, so that the vibration part 211 can be displaced relative to the fixed part 213. The folding ring part 212 may be protruded in a direction away from the top shell 11. The fixed part 213 surrounds the outer peripheral side of the folding ring part 212 and is connected to the folding ring part 212. The fixed part 213 may be an annular structure, so that it is easy to be fixed to the top side of the top shell 11. The folding ring portion 212 and the vibration portion 211 correspond to the hollowed-out position in the middle of the housing 1 , and the hollowed-out position is used to avoid the deformation movement of the folding ring portion 212 and the vibration movement of the vibration portion 211 .

[0095] For example, the first magnetic circuit component 4 can be fixed to the plate surface on the top side of the magnetic conductive member 6. In this case, the magnetic conductive member 6 can conduct the magnetic circuit of the first magnetic circuit component 4 and support the first magnetic circuit component 4, thereby reducing the support structure of the first magnetic circuit component 4, simplifying the structure of the speaker 30, and reducing the thickness of the speaker 30, which is conducive to the thin design of the speaker 30.

[0096] The first magnetic circuit assembly 4 may include a first central magnet 41 , first side magnets 42 , a first central magnetic conductive member 43 , and a first side magnetic conductive member 44 . The first magnetic circuit assembly 4 has a magnetic gap 45 .

[0097] The first central magnet 41 and the first side magnets 42 may both be substantially rectangular plate structures. The first side magnets 42 are located around the first central magnet 41 and may form a magnetic gap 45 of the first magnetic circuit assembly 4 .

[0098] The first side magnet 42 surrounds the first center magnet 41 and is spaced apart from the first center magnet 41. For example, the first side magnet 42 may include three magnets, which are arranged around the first center magnet 41 and are spaced apart from the first center magnet 41. The first side magnet 42 may be fixedly connected to the shell 1. For example, the three magnets of the first side magnet 42 are respectively fixed to the positions of the magnetic conductive part 6 close to the three sides, so that the assembly structure is more stable and accurate. In other embodiments, the first side magnet 42 may include four magnets, which are arranged around the first center magnet 41. In other embodiments, the first side magnet 42 may also be a ring magnet, which is not strictly limited in the embodiment of the present application. The gap between the first side magnet 42 and the first center magnet 41 forms part of the magnetic gap 45.

[0099] The first central magnetic conductive member 43 is fixed to the side of the first central magnet 41 facing the first diaphragm 21. The first central magnetic conductive member 43 is opposite to and spaced from the vibrating portion 211 of the first diaphragm 21. The first central magnetic conductive member 43 can be made of a magnetic conductive material.

[0100] The first side magnetic conductive element 44 is fixed to the side of the first side magnet 42 facing the first diaphragm 21 and is spaced apart from the first central magnetic conductive element 43. The first side magnetic conductive element 44 is opposite to the rim portion 212 of the first diaphragm 21 and spaced apart from each other.

[0101] The first side magnetic conductive member 44 may include three magnetic conductive portions 441 and a connecting frame 442. Two of the three magnetic conductive portions 441 are arranged opposite each other, and the other magnetic conductive portion 441 is located between the two oppositely arranged magnetic conductive portions 441. The connecting frame 442 fixedly connects the three magnetic conductive portions 441. The three magnetic conductive portions 441 are respectively located on the top sides of the three magnets of the first side magnet 42. The gap between the first side magnetic conductive member 44 and the first center magnetic conductive member 43 forms another part of the magnetic gap 45. The first side magnetic conductive member 44 may be made of a magnetic conductive material.

[0102] The first side magnetic conductive member 44 may also be fixedly connected to the housing 1. For example, the first side magnetic conductive member 44 may be fixedly connected to the inner side wall of the top housing 11.

[0103] For example, the first voice coil 22 may be substantially in the form of a hollow rectangular structure; the first voice coil 22 may be formed by winding a conductive wire.

[0104] One end of the first voice coil 22 is fixedly connected to the first diaphragm 21, and the other end of the first voice coil 22 is located in the magnetic gap 45. The first voice coil 22 can be connected to the vibrating portion 211 of the first diaphragm 21. For example, one end of the first voice coil 22 can be fixed to the side of the folding ring portion 212 facing away from the vibrating portion 211. When the other end of the first voice coil 22 is located in the magnetic gap 45, the other end of the first voice coil 22 can surround the outer periphery of the first central magnet 41 and the first central magnetic conductive member 43, and the first side magnet 42 is located on the outer periphery of the first voice coil 22. In addition, gaps are left between the first voice coil 22 and the first central magnet 41 and the first side magnet 42.

[0105] For example, the first vibration assembly 2 may further include a first centering support 23. The first voice coil 22 may be fixedly connected to the first diaphragm 21 via the first centering support 23 to better meet the position arrangement requirements of the first voice coil 22.

[0106] The first centering support 23 may be substantially frame-shaped, and may be substantially plate-shaped, so that the first voice coil 22 is evenly connected to the first diaphragm 21 .

[0107] The centering support may be deformable. The main deformable direction of the centering support is mainly the thickness direction of the centering support, that is, it can be parallel to the thickness direction Z, and the deformability within the plane of the length direction X and the width direction Y can be minimized.

[0108] For example, the first centering spider 23 may include an outer ring portion 231, a deformable portion 232, and an inner ring portion 233. The deformable portion 232 is fixedly connected to the outer ring portion 231 and the inner ring portion 233. The outer ring portion 231 may be a rectangular ring structure, fixedly connected to the top surface of the top housing 11 and also fixedly connected to the fixing portion 213 of the first diaphragm 21. The shape of the inner ring portion 233 may correspond to the shape of the first voice coil 22, facilitating the fixing of one end of the first voice coil 22 to the inner ring portion 233. One side of the inner ring portion 233 is fixedly connected to one end of the first voice coil 22, while the other side of the inner ring portion 233 is fixedly connected to the vibrating portion 211 of the first diaphragm 21. One end of the deformable portion 232 is fixedly connected to the inner circumference of the outer ring portion 231, and the other end is fixedly connected to the outer circumference of the inner ring portion 233. The deformable portion 232 is located below the rim portion 212 of the first diaphragm 21. The deformable portion 232 is elastically deformable, with the primary deformation direction of the deformable portion 232 being parallel to the thickness direction Z. When the first voice coil 22 drives the vibrating portion 211 of the first diaphragm 21 to vibrate, the inner ring portion 233 vibrates along with the vibrating portion 211. The outer ring portion 231 is fixed relative to the housing 1, and the outer ring portion 231 and the inner ring portion 233 move relative to each other. The deformable portion 232 causes the voice coil 22 to vibrate primarily in a direction perpendicular to the vibrating portion 211, while reducing movement of the first voice coil 22 in a direction parallel to the vibrating portion 211.

[0109] The first centering damper 23 may also be electrically connected to the first voice coil 22. In this case, the first centering damper 23 is conductive, thereby energizing the first voice coil 22. In other embodiments, the first centering damper 23 may not be electrically connected to the first voice coil 22.

[0110] In this example, when the first voice coil 22 is energized, it generates a force within the magnetic field of the first magnetic circuit assembly 4, thereby driving the first diaphragm 21 to vibrate. The first diaphragm 21 then drives the air to vibrate, enabling the speaker 30 to produce sound. The first voice coil 22 can receive an alternating signal and generate an alternating force within the magnetic field. The direction in which the first voice coil 22 drives the first diaphragm 21 to vibrate is along the axis of the first voice coil 22. The axis of the first voice coil 22 is aligned with the thickness direction Z of the speaker 30. The vibration direction of the first diaphragm 21 is also generally perpendicular to the first diaphragm 21 itself.

[0111] In some embodiments, the second vibration component 3 can be located on the other side of the magnetic conductive member 6, and the second magnetic circuit component 5 can be located on the same side of the magnetic conductive member 6 as the second vibration component 3. For example, the second vibration component 3 and the second magnetic circuit component 5 can both be located on the bottom side of the magnetic conductive member 6.

[0112] In some examples, the second vibration component 3 includes a second diaphragm 31 and a second voice coil 32. The second diaphragm 31 is fixed to the shell 1 and is located on the other side of the magnetic conductive part 6. The second magnetic circuit component 5 is fixed to the side of the magnetic conductive part 6 facing the second diaphragm 31. One end of the second voice coil 32 is fixedly connected to the second diaphragm 31, and the other end is located in the magnetic gap 55 of the second magnetic circuit component 5.

[0113] Exemplarily, the second diaphragm 31 is fixedly connected to the bottom housing 12. The second diaphragm 31 may be in a rectangular structure and may be fixed to the annular surface at the bottom of the bottom housing 12.

[0114] Among them, the second diaphragm 31 may include a vibration part 311, a folding ring part 312 and a fixed part 313. The vibration part 311, the folding ring part 312 and the fixed part 313 are fixedly connected in sequence. The vibration part 311 may be a rectangular structure. The folding ring part 312 surrounds the outer circumference of the vibration part 311 and is connected to the vibration part 311; the folding ring part 312 may be deformable, for example, the folding ring part 312 may have an annular structure with an overall arc surface, and the annular structure with an arc surface is easy to deform and stretch, so that the vibration part 311 can be displaced relative to the fixed part 313. The folding ring part 312 may be protruded in a direction away from the bottom shell 12. The fixed part 313 surrounds the outer circumference of the folding ring part 312 and is connected to the folding ring part 312. The fixed part 313 may be an annular structure, so that it is easy to be fixed to the bottom side of the bottom shell 12. The folding ring portion 312 and the vibration portion 311 correspond to the hollowed-out position in the middle of the housing 1 , and the hollowed-out position is used to avoid the deformation movement of the folding ring portion 312 and the vibration movement of the vibration portion 311 .

[0115] For example, the second magnetic circuit component 5 can be fixed to the plate surface on the top side of the magnetic conductive member 6. In this case, the magnetic conductive member 6 can conduct the magnetic circuit of the second magnetic circuit component 5 and support the second magnetic circuit component 5, thereby reducing the support structure of the second magnetic circuit component 5, simplifying the structure of the speaker 30, and reducing the thickness of the speaker 30, which is conducive to the thin design of the speaker 30.

[0116] The second magnetic circuit assembly 5 may include a second central magnet 51 , second side magnets 52 , a second central magnetic conductive member 53 and a second side magnetic conductive member 54 . The second magnetic circuit assembly 5 has a magnetic gap 55 .

[0117] The second central magnet 51 and the second side magnets 52 may both be substantially rectangular. The second side magnets 52 are located around the second central magnet 51 , and the second central magnet 51 and the second side magnets 52 form a magnetic gap 55 of the second magnetic circuit assembly 5 .

[0118] The second side magnet 52 surrounds the second center magnet 51 and is spaced apart from the second center magnet 51. For example, the second side magnet 52 may include two magnets, which are arranged on the circumference of the second center magnet 51 and are spaced apart from the second center magnet 51. The second side magnet 52 may be fixedly connected to the shell 1 to make the assembly structure more stable and accurate. In other embodiments, the second side magnet 52 may include four magnets, which are arranged on the circumference of the second center magnet 51. In other embodiments, the second side magnet 52 may also be a ring magnet, which is not strictly limited in the embodiments of the present application. The gap between the second side magnet 52 and the second center magnet 51 forms part of the magnetic gap 55.

[0119] The second central magnetic conductive member 53 is fixed to the side of the second central magnet 51 facing the second diaphragm 31. The second central magnetic conductive member 53 is opposite to and spaced from the vibrating portion 311 of the second diaphragm 31. The second central magnetic conductive member 53 can be made of a magnetic conductive material.

[0120] The second side magnetic conductive member 54 is fixed to the side of the second side magnet 52 facing the second diaphragm 31 and is spaced apart from the second center magnetic conductive member 53. The second side magnetic conductive member 54 is opposite to the folding ring portion 312 of the second diaphragm 31 and is spaced apart. The second side magnetic conductive member 54 may include two magnetic conductive parts, which are arranged opposite to each other. The two magnetic conductive parts correspond to the top sides of the two magnets of the second side magnet 52 respectively. The gap between the second side magnetic conductive member 54 and the second center magnetic conductive member 53 forms another part of the magnetic gap 55. The second side magnetic conductive member 54 may be made of magnetic conductive material. In other embodiments, the two magnetic conductive parts of the second side magnetic conductive member 54 may be fixedly connected to form an integrated structural member.

[0121] The second side magnetic conductive member 54 is also fixedly connected to the housing 1. For example, the second side magnetic conductive member 54 can be fixedly connected to the inner side wall of the bottom housing 12.

[0122] For example, the second voice coil 32 may be substantially in the form of a hollow rectangular structure; the second voice coil 32 may be formed by winding a conductive wire.

[0123] One end of the second voice coil 32 is fixedly connected to the second diaphragm 31, and the other end of the second voice coil 32 is located in the magnetic gap 55. The second voice coil 32 can be connected to the vibrating portion 311 of the second diaphragm 31. For example, one end of the second voice coil 32 can be fixed to the side of the folded ring portion 312 facing away from the vibrating portion 311. When the other end of the second voice coil 32 is located in the magnetic gap 55, the other end of the second voice coil 32 can surround the outer circumference of the second central magnet 51 and the second central magnetic conductive member 53, and the second side magnet 52 is located on the outer circumference of the second voice coil 32. In addition, gaps are left between the second voice coil 32 and both the second central magnet 51 and the second side magnet 52.

[0124] For example, the second vibration assembly 3 may further include a second centering support 33. The second voice coil 32 may be fixedly connected to the second diaphragm 31 via the second centering support 33 to better meet the position arrangement requirements of the second voice coil 32.

[0125] The second centering support 33 may be substantially frame-shaped, and may be substantially plate-shaped, so that the second voice coil 32 is evenly connected to the second diaphragm 31 .

[0126] The centering support may be deformable. The main deformable direction of the centering support is mainly the thickness direction of the centering support, that is, it can be parallel to the thickness direction Z, and the deformability within the plane of the length direction X and the width direction Y can be minimized.

[0127] For example, the second centering spider 33 may include an outer ring portion 331, a deformable portion 332, and an inner ring portion 333. The deformable portion 332 is fixedly connected to the outer ring portion 331 and the inner ring portion 333. The outer ring portion 331 may be a rectangular ring structure, fixedly connected to the bottom surface of the bottom housing 12 and also fixedly connected to the fixing portion 313 of the second diaphragm 31. The shape of the inner ring portion 333 may correspond to the shape of the second voice coil 32, facilitating the fixing of one end of the second voice coil 32 to the inner ring portion 333. One side of the inner ring portion 333 is fixedly connected to one end of the second voice coil 32, while the other side of the inner ring portion 333 is fixedly connected to the vibrating portion 311 of the second diaphragm 31. One end of the deformable portion 332 is fixedly connected to the inner circumference of the outer ring portion 331, and the other end is fixedly connected to the outer circumference of the inner ring portion 333. The deformable portion 332 is located above the rim portion 312 of the second diaphragm 31. The deformable portion 332 is elastically deformable, with the primary deformation direction of the deformable portion 332 being parallel to the thickness direction Z. When the second voice coil 32 drives the vibrating portion 311 of the second diaphragm 31 to vibrate, the inner ring portion 333 vibrates along with the vibrating portion 311. The outer ring portion 331 is fixed relative to the housing 1, and the outer ring portion 331 and the inner ring portion 333 move relative to each other. The deformable portion 332 causes the voice coil 32 to vibrate primarily in a direction perpendicular to the vibrating portion 311, while minimizing movement of the second voice coil 32 in a direction parallel to the vibrating portion 311.

[0128] The second damper 33 may also be electrically connected to the second voice coil 32. In this case, the second damper 33 is conductive, thereby energizing the second voice coil 32. In other embodiments, the second damper 33 may not be electrically connected to the second voice coil 32.

[0129] In this example, when the second voice coil 32 is energized, it generates a force within the magnetic field of the second magnetic circuit assembly 5, thereby vibrating the second diaphragm 31. The second diaphragm 31 then vibrates the air, causing the speaker 30 to produce sound. The second voice coil 32 can receive an alternating signal and generate an alternating force within the magnetic field. The direction in which the second voice coil 32 forces the second diaphragm 31 to vibrate is along the axis of the second voice coil 32. The axis of the second voice coil 32 is aligned with the thickness direction Z of the speaker 30, and the vibration direction of the second diaphragm 31 is generally perpendicular to the second diaphragm 31 itself.

[0130] In this embodiment, the speaker 30 includes two sets of vibration components, which are located on two sides of the magnetic conductive member 6, so that the two sets of vibration components can produce sound independently. The first voice coil 22 can drive the first diaphragm 21 to vibrate, and the second voice coil 32 can drive the second diaphragm 31 to vibrate. The cooperation between the first diaphragm 21 and the second diaphragm 31 can provide the speaker 30 with better low-frequency loudness, thereby improving the sound quality of the speaker 30. In addition, by providing the magnetic conductive member 6, the magnetic conductive member 6 can not only conduct the magnetic circuits in the first magnetic circuit component 4 and the second magnetic circuit component 5, which is conducive to simplifying the magnetic circuit design, but also support the first magnetic circuit component 4 and the second magnetic circuit component 5, thereby simplifying the design of the support structure of the speaker 30, facilitating the thin design of the speaker 30, and thus improving the adaptability of the speaker 30 to the application environment.

[0131] As shown in FIG4 , in some embodiments, the magnetic conductive member 6 includes a first magnetic conductive portion 61, a connecting portion 62, and a second magnetic conductive portion 63. The connecting portion 62 is fixedly connected to the first magnetic conductive portion 61 and the second magnetic conductive portion 63. The first magnetic conductive portion 61 and the second magnetic conductive portion 63 are arranged along the longitudinal direction X of the speaker 30. The longitudinal direction of the magnetic conductive member 6 is parallel to the longitudinal direction X of the speaker 30, and the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 may also be arranged along the longitudinal direction X.

[0132] The first magnetic circuit component 4 is fixed to the first magnetic conductive portion 61, and the second magnetic circuit component 5 is fixed to the second magnetic conductive portion 63. The first magnetic conductive portion 61 is used to conduct the magnetic circuit of the first magnetic circuit component 4 and also serves as a support structure for the first magnetic circuit component 4. The second magnetic conductive portion 63 is used to conduct the magnetic circuit of the second magnetic circuit component 5 and also serves as a support structure for the second magnetic circuit component 5.

[0133] The connecting portion 62 may be located between the first magnetic circuit component 4 and the second magnetic circuit component 5. Since the first magnetic conductive portion 61 and the second magnetic conductive portion 63 are staggered, the connecting portion 62 extends along the thickness direction Z. In other embodiments, the connecting portion 62 may also be tilted relative to the thickness direction Z.

[0134] The first magnetic conductive portion 61 is parallel to the second magnetic conductive portion 63, and the first magnetic conductive portion 61 and the second magnetic conductive portion 63 are staggered, so that the distance between the first magnetic conductive portion 61 and the first diaphragm 21 is greater than the distance between the second magnetic conductive portion 63 and the first diaphragm 21. In this case, the first magnetic circuit component 4 and the second magnetic circuit component 5 overlap in the thickness direction Z. The first magnetic circuit component 4 and the second magnetic circuit component 5 are arranged side by side, and the first magnetic circuit component 4 and the second magnetic circuit component 5 are equivalent to reusing the space in the thickness direction Z, which facilitates the thin design of the speaker 30.

[0135] For example, the overlapping thickness of the first magnetic circuit component 4 and the second magnetic circuit component 5 can be greater than 80% of the thickness of the second magnetic circuit component 5. In this case, the first magnetic circuit component 4 and the second magnetic circuit component 5 can make full use of the space in the thickness direction Z, thereby significantly reducing the thickness of the speaker 30.

[0136] For example, the thickness of the first magnetic circuit component 4 and the thickness of the second magnetic circuit component 5 can be the same. The top surface of the first central magnetic conductive member 43 can be flush or nearly flush with the top surface of the second magnetic conductive portion 63, and the bottom surface of the second central magnetic conductive member 53 can be flush or nearly flush with the bottom surface of the first magnetic conductive portion 61. In this case, in the thickness direction Z, only the thickness of the first magnetic circuit component 4 or the second magnetic circuit component 5 is used to realize the arrangement of the first magnetic circuit component 4 and the second magnetic circuit component 5, which effectively utilizes the thickness space, reduces the thickness of the speaker 30, and improves the integration of the speaker 30.

[0137] Continuing with Figures 3 and 4 , in some embodiments, a first voice coil 22 and a first magnetic circuit assembly 4 are arranged in a group, and a second voice coil 32 and a second magnetic circuit assembly 5 are arranged in a group. A group of second voice coils 32 and second magnetic circuit assemblies 5 is alternately arranged with at least one group of first voice coils 22 and first magnetic circuit assemblies 4 along a first direction. The first direction is parallel to the length of the loudspeaker 30 , i.e., the first direction is parallel to the length direction X.

[0138] At this time, the first magnetic circuit assembly 4 and the first voice coil 22 in the same group can work together. The first magnetic circuit assembly 4 is used to drive the first voice coil 22 to vibrate, thereby causing the first voice coil 22 to vibrate the first diaphragm 21. Of course, the second magnetic circuit assembly 5 and the second voice coil 32 in the same group can work together. The second magnetic circuit assembly 5 is used to drive the second voice coil 32 to vibrate, thereby causing the second voice coil 32 to vibrate the second diaphragm 31.

[0139] In this embodiment, when a set of second voice coils 32 and second magnetic circuit assemblies 5 is arranged alternately with at least one set of first voice coils 22 and first magnetic circuit assemblies 4 along the first direction, multiple sets of first voice coils 22 and first magnetic circuit assemblies 4 can be provided. These multiple sets of first voice coils 22 and first magnetic circuit assemblies 4 can simultaneously drive the first diaphragm 21, resulting in a more balanced driving force on the first diaphragm 21. This helps prevent biasing of the first diaphragm 21 during vibration and facilitates the rational arrangement of the first and second voice coils 22 and 32, ensuring balanced force on both the first and second diaphragms 21, 31 during vibration. Furthermore, multiple sets of first voice coils 22 and first magnetic circuit assemblies 4 can provide greater driving force to the first diaphragm 21, thereby improving the sound quality of the speaker 30. Furthermore, the first direction being parallel to the length of the speaker 30 facilitates a slender design for the speaker 30, improving its adaptability to various application scenarios.

[0140] In some examples, there are two sets of first voice coils 22 and first magnetic circuit assemblies 4, and one set of second voice coils 32 and second magnetic circuit assemblies 5. In this case, one set of second voice coils 32 and second magnetic circuit assemblies 5 is located between the two sets of first voice coils 22 and first magnetic circuit assemblies 4. The two sets of first voice coils 22 and first magnetic circuit assemblies 4 are symmetrically arranged to ensure more balanced force on the first diaphragm 21 during vibration. The second voice coil 32 can be located in the middle of the second diaphragm 31 to ensure more balanced force on the second diaphragm 31.

[0141] Among them, the sum of the cross-sectional areas of the two first voice coils 22 in the direction perpendicular to the axis of the first voice coil 22 is basically consistent with the cross-sectional area of ​​the second voice coil 32 in the direction perpendicular to the axis of the second voice coil 32, which is conducive to making the first diaphragm 21 and the second diaphragm 31 vibrate with basically the same amplitude.

[0142] The first centering support 23 may have two inner ring portions 333 , and the two inner ring portions 333 are fixedly connected to the two first voice coils 22 respectively.

[0143] In this case, the magnetic conductive member 6 can have two first magnetic conductive portions 61, with the second magnetic conductive portion 63 located between the two first magnetic conductive portions 61. The two first magnetic conductive portions 61 can be arranged flush with each other, forming a "convex" shape in the overall magnetic conductive member 6. The two first magnetic conductive portions 61 can be used to mount the two first magnetic circuit assemblies 4.

[0144] It is understandable that when there are more first voice coils 22 and first magnetic circuit components 4, more first magnetic conductive portions 61 can be provided. When there are more second voice coils 32 and second magnetic circuit components 5, more second magnetic conductive portions 63 can be provided.

[0145] Please refer to FIG. 5 , which is a cross-sectional view of the loudspeaker 30 shown in FIG. 2 taken along line BB.

[0146] In some embodiments, the length direction of the first voice coil 22 and the second voice coil 32 is parallel to the arrangement direction of the first voice coil 22 and the second voice coil 32 (i.e., the X direction). In this case, the width direction Y of the speaker 30 can be further reduced, which helps improve the rationality of the overall structure of the speaker 30 when it is designed with a large aspect ratio. Specifically, the width and thickness of the first voice coil 22 and the second voice coil 32 can be the same, and the gaps between the first voice coil 22 and the second voice coil 32 and the sidewalls of the housing 1 can be the same, which can make the structure of the speaker 30 more regular and facilitate the miniaturization of the speaker 30.

[0147] In some examples, the ratio of the length to the width of the speaker 30 can be greater than or equal to 4. In this case, the speaker 30 can have a smaller width in the electronic device 100 (see FIG. 1 ). When the installation space of the speaker 30 has a larger length-to-width ratio, the speaker 30 has a smaller impact on the appearance of the electronic device 100 and causes less damage to the structure of the electronic device 100, which helps simplify the structural design of the electronic device 100.

[0148] Please refer to FIG. 6 , which is a cross-sectional view of the loudspeaker 30 shown in FIG. 3 from another perspective.

[0149] In some embodiments, a first magnetic gap 7 is formed between the first magnetic circuit component 4 and the second magnetic circuit component 5 , wherein a portion of the first voice coil 22 and a portion of the second voice coil 32 are located in the first magnetic gap 7 .

[0150] At this time, since the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 can be arranged side by side, a first magnetic gap 7 can be formed between adjacent magnets between the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5. When part of the structure of the first voice coil 22 and part of the structure of the second voice coil 32 are located in the first magnetic gap 7, both the first voice coil 22 and the second voice coil 32 can be driven within the first magnetic gap 7, thereby vibrating. The first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 cooperate with each other, and the first voice coil 22 is effectively driven by the magnetic field formed by the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5, while the second voice coil 32 is effectively driven by the magnetic field formed by the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5. Both the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 contain reused magnets. Therefore, the provision of the first magnetic gap 7 can reduce the number of magnets in the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5, thereby reducing the size of the speaker 30 and simplifying the overall structure of the speaker 30.

[0151] For example, a first magnetic gap 7 can be formed between the first central magnet 41 and the second central magnet 51. In this case, the first central magnet 41 and the second central magnet 51 are arranged adjacent to each other, and no additional magnet is required between the first central magnet 41 and the second central magnet 51. Since the first magnetic circuit assembly 4 and the first magnetic circuit assembly 4 are arranged along the length direction X, the length dimensions of the first magnetic circuit assembly 4 and the first magnetic circuit assembly 4 can be reduced, thereby reducing the length dimension of the speaker 30.

[0152] Because first voice coil 22 is disposed around first central magnet 41, part of its structure is located within magnetic gap 45 of first magnetic circuit assembly 4, and part of its structure is located within first magnetic gap 7. Because second voice coil 32 is disposed around second central magnet 51, part of its structure is located within magnetic gap 55 of second magnetic circuit assembly 5, and part of its structure is located within first magnetic gap 7. With parts of both first and second voice coils 22 and 32 located within first magnetic gap 7, the spacing between them can be reduced. This increases the cross-sectional area of ​​first and second voice coils 22 and 32, resulting in a larger contact area between first voice coil 22 and first diaphragm 21, further stabilizing the driving of first diaphragm 21 by first voice coil 22. Furthermore, the contact area between second voice coil 32 and second diaphragm 31 is increased, further stabilizing the driving of second diaphragm 31 by second voice coil 32.

[0153] For example, the minimum distance between first center magnet 41 and second center magnet 51 is less than or equal to 2 mm. In this case, the minimum distance between first center magnet 41 and second center magnet 51 is also the minimum distance of first magnetic gap 7. By setting a smaller distance, the distance between first center magnet 41 and second center magnet 51 is reduced, thereby improving the driving efficiency of first magnetic gap 7 for first voice coil 22 and second voice coil 32.

[0154] In addition, the connecting portion 62 can be located in the first magnetic gap 7 and between the first voice coil 22 and the second voice coil 32. In this case, the connecting portion 62 not only connects the first magnetic conductive portion 61 and the second magnetic conductive portion 63, but also isolates the first voice coil 22 and the second voice coil 32, thereby reducing the possibility of collision between the first voice coil 22 and the second voice coil 32 when the speaker 30 is in operation or subjected to external force, thereby improving the reliability of the speaker 30.

[0155] It can be understood that the first central magnet 41 and the second central magnet 51 have like poles facing opposite directions, thereby forming a magnetic circuit between the first central magnet 41 and the second central magnet 51 .

[0156] For example, when there are two groups of first magnetic circuit components 4, the first central magnets 41 of the two groups of first magnetic circuit components 4 can have their N poles facing the first diaphragm 21 and their S poles facing the second diaphragm 31, and the second central magnets 51 of the second magnetic circuit component 5 can have their N poles facing the second diaphragm 31 and their S poles facing the first diaphragm 21. The first side magnets 42 of the two groups of first magnetic circuit components 4 can have their N poles facing the second diaphragm 31 and their S poles facing the first diaphragm 21, and the second side magnets 52 of the second magnetic circuit component 5 can have their N poles facing the first diaphragm 21 and their S poles facing the second diaphragm 31.

[0157] It is understandable that when the first magnetic circuit component 4 has the first central magnetic conductive member 43 and the second magnetic circuit component 5 has the second central magnetic conductive member 53 , the first central magnetic conductive member 43 and the second central magnetic conductive member 53 can also be used to form the first magnetic gap 7 .

[0158] Please refer to FIG. 7 , which is a schematic structural diagram of the magnetic conductive member 6 of the loudspeaker 30 shown in FIG. 2 .

[0159] In some embodiments, the magnetic conductive member 6 can be an integral structural member. In some examples, the magnetic conductive member 6 can be integrally formed from a plate-like member. For example, the magnetic conductive member 6 can be formed using a bending or stamping process. In this case, the magnetic conductive member 6 is relatively simple to manufacture, has high structural strength, and provides good support performance.

[0160] The thickness b of the first magnetic conductive portion 61, the thickness c of the second magnetic conductive portion 63, and the thickness a of the connecting portion 62 of the magnetic conductive member 6 may be different. For example, the thickness a of the connecting portion 62 is less than the thickness b of the first magnetic conductive portion 61 and / or the thickness c of the second magnetic conductive portion 63, and the thickness b of the first magnetic conductive portion 61 and the thickness c of the second magnetic conductive portion 63 may be the same. For example, the thickness a of the connecting portion 62 may be less than or equal to 0.35 mm, such as the thickness a of the connecting portion 62 may be 0.3 mm, and the thickness b of the first magnetic conductive portion 61 and / or the thickness c of the second magnetic conductive portion 63 may be greater than or equal to 0.35 mm, such as the thickness b of the first magnetic conductive portion 61 and / or the thickness c of the second magnetic conductive portion 63 may be 0.4 mm.

[0161] In this embodiment, when the connecting portion 62 is located in the first magnetic gap 7 (see FIG6 ), by reasonably setting the thickness a of the connecting portion 62, the thickness b of the first magnetic conductive portion 61, and the thickness c of the second magnetic conductive portion 63, the influence on the strength of the magnetic conductive member 6 is reduced, which is beneficial to reducing the width of the first magnetic gap 7, thereby facilitating improving the sound quality of the speaker 30 (see FIG6 ).

[0162] In some other embodiments, the thickness b of the first magnetic conductive portion 61 , the thickness c of the second magnetic conductive portion 63 , and the thickness a of the connecting portion 62 of the magnetic conductive member 6 may be the same.

[0163] Please refer to FIG6 , FIG8 and FIG9 , FIG8 is a schematic structural diagram of the magnetic conductive member 6 shown in FIG6 in some other embodiments, and FIG9 is a schematic structural diagram of the magnetic conductive member 6 shown in FIG6 in some other embodiments.

[0164] In some embodiments, the connection portion 62 of the magnetic conductive member 6 is provided with a communication hole 64 , and the communication hole 64 connects the spaces on both sides of the connection portion 62 .

[0165] The connecting holes 64 may be provided corresponding to the first central magnet 41 and the second central magnet 51 so that there is no magnetic conductive structure or fewer magnetic conductive structures blocking the magnetic path between the first central magnet 41 and the second central magnet 51 .

[0166] In this embodiment, the connecting portion 62 is located in the first magnetic gap 7 , with the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 on either side of the connecting portion 62 . The connecting portion 62 , the first magnetic conductive portion 61 , and the second magnetic conductive portion 63 can all be made of magnetically conductive materials. In this case, the connecting portion 62 may block the magnetic circuit in the first magnetic gap 7 . By providing a connecting hole 64 in the connecting portion 62 , a magnetic circuit is directly formed between the first central magnet 41 and the second central magnet 51 , reducing obstruction by the connecting portion 62 . This improves the magnetic strength of the first magnetic gap 7 , thereby enhancing the sound quality of the speaker 30 .

[0167] In one embodiment, a single connecting hole 64 can be provided on each connecting portion 62 (as shown in FIG8 ), simplifying the creation of the connecting hole 64 . In other embodiments, multiple connecting holes 64 can be provided (as shown in FIG9 ), with the multiple connecting holes 64 covering at least half of the second voice coil 32 in the arrangement direction of the first voice coil 22 and the second voice coil 32 . The multiple connecting holes 64 can be arranged in an array, which minimizes structural damage to the connecting portion 62 .

[0168] In some examples, the cross-sectional area of ​​the communication hole 64, perpendicular to the length direction X of the speaker 30, is greater than half the cross-sectional area of ​​the first voice coil 22 or the second voice coil 32, perpendicular to the length direction X of the speaker 30 (not shown). Part of the first voice coil 22 or the second voice coil 32 is located within the first magnetic gap 7. By sizing the area of ​​the communication hole 64, the connection portion 62 minimizes obstruction of the magnetic path between the first center magnet 41 and the second center magnet 51. Consequently, when the first voice coil 22 or the second voice coil 32 vibrates, it is subjected to a relatively balanced force within the first magnetic gap 7.

[0169] 8 , the connecting hole 64 may be opened in the middle of the connecting portion 62 to correspond to the first central magnet 41 and the second central magnet 51. In this case, less material is removed from the connecting portion 62, which has less impact on the strength of the connecting portion 62.

[0170] As shown in Figure 9 , multiple communicating holes 64 can be provided. For example, there can be two communicating holes 64, arranged side by side. A supporting rib can be formed between the two communicating holes 64 to reduce the impact of the communicating holes 64 on the strength of the connecting portion 62. In the connecting portion 62, the structures on both sides of the communicating holes 64 and the supporting ribs have a width in the width direction Y of greater than or equal to 0.4 mm to facilitate processing and ensure the strength of the connecting portion 62.

[0171] Please refer to Figure 6 and Figure 10 in combination. Figure 10 is a structural diagram of the magnetic conductive part 6 shown in Figure 6 in some other embodiments. The magnetic conductive part 6 shown in Figure 10 can include most of the technical features of the magnetic conductive part 6 shown in Figure 9. The following mainly explains the differences between the two, and most of the technical contents that are the same between the two are not repeated.

[0172] In some embodiments, the difference between the magnetic conductive member 6 shown in FIG. 10 and the magnetic conductive member 6 shown in FIG. 9 is that the magnetic conductive member 6 may further include a reinforcement portion 65 .

[0173] For example, the reinforcement portion 65 can fill the connecting hole 64. The reinforcement portion 65 can be made of an insulating material and does not have magnetic conductivity. It does not block the magnetic path between the first central magnet 41 and the second central magnet 51, thereby not affecting the sound quality of the speaker 30. Furthermore, the reinforcement portion 65 enhances the strength of the magnetic conductive member 6 at the connecting portion 62. Because the reinforcement portion 65 fills the connecting hole 64, the space on both sides of the connecting portion 62 and the reinforcement portion 65 is isolated, preventing gas from communicating with each other, thereby improving the sound quality of the speaker 30.

[0174] In some other embodiments, the reinforcing portion 65 may also be a thin film layer, so that the reinforcing portion 65 can cover the outer surface of the connecting portion 62. The reinforcing portion 65 can be made of a relatively strong metal material or polymer material, and the reinforcing portion 65 can be electroplated or coated on the outer surface of the connecting portion 62. By providing the reinforcing portion 65, the overall structural strength of the magnetic conductive component 6 can be improved, making the load-bearing capacity of the magnetic conductive component 6 stronger and the support more stable. Alternatively, the reinforcing portion 65 can also cover the outer surfaces of the first magnetic conductive portion 61 and the second magnetic conductive portion 63, thereby improving the strength of the entire or most of the structure of the magnetic conductive component 6.

[0175] Please refer to FIG. 1 , FIG. 3 and FIG. 11 in combination. FIG. 11 is a schematic diagram of the loudspeaker 30 shown in FIG. 3 achieving far-field noise cancellation.

[0176] In some embodiments, the vibration 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. The first diaphragm 21 and the second diaphragm 31 can be arranged in parallel, and the areas of the first diaphragm 21 and the second diaphragm 31 can be the same.

[0177] The first diaphragm 21 may be disposed toward the top side of the temple 102 , and the second diaphragm 31 may be disposed toward the bottom side of the temple 102 . Sound holes may be provided on the top and bottom sides of the temple 102 .

[0178] For example, in the acoustic dipole mode, the first diaphragm 21 and the second diaphragm 31 vibrate at the same frequency and amplitude, and in the same direction. Therefore, the sound waves emitted by the first diaphragm 21 and the second diaphragm 31 are equal in magnitude and opposite in phase (i.e., a phase difference of 180°). In other words, the loudspeaker 30 is a dipole loudspeaker and can form a dipole sound field.

[0179] When the speaker 30 emits sound, two sounds with opposite phases are emitted from the first diaphragm 21 and the second diaphragm 31 respectively and transmitted to the outside of the speaker 30. Specifically, the sound emitted from the first diaphragm 21 is emitted from the top of the temple 102, and the sound emitted from the second diaphragm 31 is emitted from the bottom of the temple 102.

[0180] As shown in Figure 11, a figure-8 directivity pattern is present around the first and second diaphragms 21, 31. Based on the principle of acoustic dipoles, this ensures that the wearer's hearing needs are met by placing the human ear in the effective listening area and ensuring that the first and second diaphragms 21, 31 have relatively low loudness. When sound travels to a distant location, the two equal-amplitude, anti-phase sound waves cancel each other out in the far field, forming a sound-cancelling zone and achieving far-field sound cancellation, effectively enhancing the far-field privacy of the electronic device 100.

[0181] For example, in acoustic monopole mode, the first diaphragm 21 and the second diaphragm 31 vibrate at the same frequency and amplitude, but in opposite directions. Therefore, the sound waves emitted by the first and second diaphragms 21, 31 are equal in magnitude and have the same phase. In other words, the speaker 30 is a monopole speaker, forming a monopole sound field. This allows the speaker 30 to compress the air more, thereby providing greater loudness, allowing the wearer to experience a better in-ear loudness and enhancing the user experience.

[0182] Please refer to Figure 12, which is a schematic diagram of the internal structure of the speaker 30 of the electronic device 100 shown in Figure 1 in other embodiments. The speaker 30 shown in Figure 12 can include most of the technical features of the speaker 30 shown in Figure 2. The following mainly describes the differences between the two, and most of the technical content that is shared between the two is not repeated.

[0183] In some embodiments, the main difference between the speaker 30 shown in FIG. 12 and the speaker 30 shown in FIG. 2 lies in the number of groups of the first voice coil 22 and the first magnetic circuit assembly 4 , and the number of groups of the second voice coil 32 and the second magnetic circuit assembly 5 .

[0184] Exemplarily, the first voice coil 22 and the first magnetic circuit assembly 4 can have three groups, and the second voice coil 32 and the second magnetic circuit assembly 5 can have two groups. Among them, there are three first voice coils 22, and two second voice coils 32. The three first voice coils 22 and the two second voice coils 32 are arranged alternately. The three first voice coils 22 jointly drive the first diaphragm 21, and the two second voice coils 32 jointly drive the first diaphragm 21. Among them, there are three groups of first magnetic circuit assemblies 4, and two groups of second magnetic circuit assemblies 5. The three groups of first magnetic circuit assemblies 4 and the two second magnetic circuit assemblies 5 are arranged alternately. Among them, the bending of the magnetic conductive part 6 can be adaptively set according to the corresponding magnetic circuit assembly. For the specific arrangement of the shell 1, the first vibration assembly 2, the second vibration assembly 3, the first magnetic circuit assembly 4, the second magnetic circuit assembly 5 and the magnetic conductive part 6, please refer to the relevant schemes in the embodiments of Figures 2 to 11, and this embodiment will not be repeated here.

[0185] In this embodiment, the number of groups of first voice coils 22 and first magnetic circuit components 4, and the number of groups of second voice coils 32 and second magnetic circuit components 5 are relatively large. Multiple first voice coils 22 drive the first diaphragm 21, and have sufficient driving force and driving stability for the first diaphragm 21. Multiple second voice coils 32 drive the second diaphragm 31, and have sufficient driving force and driving stability for the second diaphragm 31, so that the speaker 30 has higher sound quality. At this time, the aspect ratio of the speaker 30 is larger, which is conducive to further reducing the width of the speaker 30, so that the speaker 30 can adapt to different application scenarios.

[0186] The above description uses the electronic device being AR glasses as an example, and the following description uses the electronic device being a mobile phone as an example.

[0187] Please refer to FIG. 13 , which is a schematic structural diagram of another electronic device provided in an embodiment of the present application.

[0188] Exemplarily, the electronic device 200 may include a housing 50, a display screen 60, and a speaker 30. The housing 50 is used to protect the internal electronic components of the electronic device 200, and the housing 50 serves as the body of the electronic device 200. The housing 50 may include a frame 501 and a back cover 502, wherein the frame 501 is connected to the back cover 502 and is arranged around the back cover 502. Exemplarily, the display screen 60 may be fixed to the frame 501. The display screen 60 is arranged opposite to the back cover 502, and the display screen 60, together with the frame 501 and the back cover 502, may enclose the internal space of the electronic device 200. The display screen 60 may be a flexible display screen 60 or a rigid display screen 60. The display screen 60 may be an organic light-emitting diode (OLED) display screen, a mini organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a quantum dot light emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0189] The frame 501 may be provided with a sound hole 503. The number of sound holes 503 may be one or more. FIG13 illustrates a plurality of sound holes 503. In other embodiments, the sound holes 503 may also be provided on the back cover 502, the display screen 60, the connection between the frame 501 and the display screen 60, or the connection between the frame 501 and the back cover 502.

[0190] For example, the speaker 30 can be installed in the housing 50 and located inside the electronic device 200. Figure 13 shows the speaker 30 by a dotted line. The speaker 30 can play sound to the outside of the electronic device 200 through the sound outlet 503.

[0191] The specific structural arrangement of the speaker 30 may refer to the relevant solutions in the embodiments of FIG. 1 to FIG. 12 , and will not be described in detail in this embodiment.

[0192] It should be noted that FIG13 only schematically illustrates some components of the electronic device 200, and the actual shapes and sizes of these components are not limited by FIG13. It should be understood that when the electronic device 200 has other forms, the electronic device 200 may not include the display screen 60, or the electronic device 200 may include multiple display screens 60.

[0193] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0194] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0195] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A loudspeaker (30), characterized in that: It comprises a housing (1), a first vibration component (2), a second vibration component (3), a first magnetic circuit component (4), a second magnetic circuit component (5), and a magnetic conductive member (6), wherein the magnetic conductive member (6) is fixed to the inner side of the housing (1); The first vibration component (2) comprises a first diaphragm (21) and a first voice coil (22); the first diaphragm (21) is fixed to the housing (1) and is located on one side of the magnetic conductive member (6); the first magnetic circuit component (4) is fixed to the side of the magnetic conductive member (6) facing the first diaphragm (21); 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 (45) of the first magnetic circuit component (4); The second vibration component (3) includes a second diaphragm (31) and a second voice coil (32); the second diaphragm (31) is fixed to the housing (1) and is located on the other side of the magnetic conductive member (6); the second magnetic circuit component (5) is fixed to the side of the magnetic conductive member (6) facing the second diaphragm (31); one end of the second voice coil (32) is fixedly connected to the second diaphragm (31), and the other end is located in the magnetic gap (55) of the second magnetic circuit component (5).

2. The loudspeaker (30) according to claim 1, characterized in that The magnetic conductive member (6) comprises a first magnetic conductive portion (61), a connecting portion (62), and a second magnetic conductive portion (63); the connecting portion (62) is fixedly connected to the first magnetic conductive portion (61) and the second magnetic conductive portion (63); the first magnetic conductive portion (61) and the second magnetic conductive portion (63) are arranged in the longitudinal direction of the speaker (30); The first magnetic circuit component (4) is fixed to the first magnetic conductive part (61), and the second magnetic circuit component (5) is fixed to the second magnetic conductive part (63). The first magnetic conductive part (61) is parallel to the second magnetic conductive part (63). The first magnetic conductive part (61) and the second magnetic conductive part (63) are staggered so that the distance between the first magnetic conductive part (61) and the first diaphragm (21) is greater than the distance between the second magnetic conductive part (63) and the first diaphragm (21).

3. The loudspeaker (30) according to claim 2, characterized in that In the thickness direction of the loudspeaker (30), the overlapping thickness of the first magnetic circuit component (4) and the second magnetic circuit component (5) is greater than 80% of the thickness of the second magnetic circuit component (5).

4. The loudspeaker (30) according to claim 2, characterized in that A first magnetic gap (7) is formed between the first magnetic circuit component (4) and the second magnetic circuit component (5), and a partial structure of the first voice coil (22) and a partial structure of the second voice coil (32) are located in the first magnetic gap (7).

5. The loudspeaker (30) according to claim 4, characterized in that The first magnetic circuit component (4) comprises a first central magnet (41) and a first side magnet (42), wherein the first side magnet (42) is located on the circumference of the first central magnet (41), and the first central magnet (41) and the first side magnet (42) at least form a part of the magnetic gap (45) of the first magnetic circuit component (4); The second magnetic circuit component (5) comprises a second central magnet (51) and a second side magnet (52), wherein the second side magnet (52) is located on the circumference of the second central magnet (51), and the second central magnet (51) and the second side magnet (52) form a part of the magnetic gap (55) of the second magnetic circuit component (5); The first magnetic gap (7) is formed between the first central magnet (41) and the second central magnet (51).

6. The loudspeaker (30) according to claim 5, characterized in that The minimum distance between the first central magnet (41) and the second central magnet (51) is less than or equal to 2 mm.

7. The loudspeaker (30) according to claim 4, characterized in that The connecting portion (62) is located in the first magnetic gap (7), and the connecting portion (62) is located between the first voice coil (22) and the second voice coil (32).

8. The loudspeaker (30) according to claim 7, characterized in that The thickness of the connecting portion (62) is smaller than that of the first magnetic conductive portion (61) and / or the second magnetic conductive portion (63); Alternatively, the thickness of the connecting portion (62) is less than or equal to 0.35 mm, and the thickness of the first magnetic conductive portion (61) and / or the thickness of the second magnetic conductive portion (63) is greater than or equal to 0.35 mm.

9. The loudspeaker (30) according to claim 7, characterized in that The connecting portion (62) is provided with a communicating hole (64), and the communicating hole (64) communicates with the spaces on both sides of the connecting portion (62); The cross-sectional area of ​​the connecting hole (64) in the direction perpendicular to the length of the loudspeaker (30) is greater than half of the cross-sectional area of ​​the first voice coil (22) or the second voice coil (32) in the direction perpendicular to the length of the loudspeaker (30); or, the number of the connecting holes (64) is multiple, and in the arrangement direction of the first voice coil (22) and the second voice coil (32), the multiple connecting holes (64) cover at least half of the area of ​​the second voice coil (32).

10. The loudspeaker (30) according to claim 9, characterized in that The connecting portion (62) further includes a reinforcing portion (65), wherein the reinforcing portion (65) is made of a metal material and covers the surface of the connecting portion (62); or, the reinforcing portion (65) is made of an insulating material and fills the connecting hole (64).

11. The loudspeaker (30) according to any one of claims 1 to 10, characterized in that The magnetic conductive component (6) is an integrated structural component.

12. The loudspeaker (30) according to any one of claims 1 to 10, characterized in that A first voice coil (22) and a first magnetic circuit component (4) are arranged in a group, a second voice coil (32) and a second magnetic circuit component (5) are arranged in a group, and a group of the second voice coil (32) and the second magnetic circuit component (5) and at least one group of the first voice coil (22) and the first magnetic circuit component (4) are alternately arranged along a first direction, and the first direction is parallel to the length direction of the speaker (30).

13. The loudspeaker (30) according to claim 12, characterized in that The first voice coil (22) and the first magnetic circuit assembly (4) have two groups, and the second voice coil (32) and the second magnetic circuit assembly (5) have one group; or the first voice coil (22) and the first magnetic circuit assembly (4) have three groups, and the second voice coil (32) and the second magnetic circuit assembly (5) have two groups.

14. The loudspeaker (30) according to any one of claims 1 to 10, characterized in that The vibration 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.

15. The loudspeaker (30) according to any one of claims 1 to 10, characterized in that The length directions of the first voice coil (22) and the second voice coil (32) are parallel to the arrangement direction of the first voice coil (22) and the second voice coil (32).

16. An electronic device, characterized in that: The invention comprises a machine body and a loudspeaker (30) according to any one of claims 1 to 15, wherein the loudspeaker (30) is fixed to the machine body.

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