Sound production apparatus and electronic device

Abstract

Disclosed in the invention are a sound production apparatus and an electronic device. The sound production apparatus comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system has a first magnetic gap and a second magnetic gap; the vibration system comprises a first vibration assembly and a second vibration assembly; the first vibration assembly and the second vibration assembly are both opposite the magnetic circuit system; the first vibration assembly comprises a first diaphragm and a first voice coil, and one end of the first voice coil is suspended in the first magnetic gap; the second vibration assembly comprises a second diaphragm and a second voice coil, the second voice coil is a flat voice coil, and the second voice coil is arranged in the second magnetic gap; and the vibration direction of the first vibration assembly is arranged at an angle to the vibration direction of the second vibration assembly. The invention aims to provide a sound production apparatus in which vibration radiation surfaces are independent of each other and arranged at an angle. The sound production apparatus not only realizes multifunctional applications, but also effectively improves the sound production effect, and reduces the manufacturing costs.

Description

Sound-generating devices and electronic equipment Technical Field

[0001] The present invention relates to the technical field of electroacoustic conversion, and in particular to a sound-generating device and an electronic device using the sound-generating device. Background Art

[0002] With the development of the portable consumer electronics market, micro-sound devices have been widely used. Furthermore, the increasing multifunctionality and miniaturization of portable terminal electronic products have placed higher demands on the vibroacoustic performance of micro-sound generators. Currently, micro-speaker modules in smart mobile terminals have a narrow effective frequency band, a relatively monotonous timbre, and poor sound quality, and cannot meet various functional requirements.

[0003] Summary of the Invention

[0004] The main purpose of the present invention is to provide a sound-emitting device and an electronic device, aiming to provide a sound-emitting device in which vibration radiation surfaces are independent of each other and arranged at an angle. The sound-emitting device not only realizes multifunctional applications, but also effectively improves the sound effect and reduces the production cost.

[0005] To achieve the above-mentioned object, the present invention provides a sound-generating device, which includes a vibration system and a magnetic circuit system, wherein:

[0006] The magnetic circuit system has a first magnetic gap and a second magnetic gap; and

[0007] a vibration system comprising a first vibration component and a second vibration component, both opposed to the magnetic circuit system, wherein a vibration direction of the first vibration component is arranged at an angle to a vibration direction of the second vibration component, the first vibration component comprising a first diaphragm and a first voice coil, the second vibration component comprising a second diaphragm and a second voice coil, and the second voice coil being a flat voice coil;

[0008] The magnetic circuit system includes: a basin frame, and a first magnetic circuit part and a second magnetic circuit part provided on the basin frame;

[0009] The first magnetic circuit portion is opposite to and spaced from the first vibrating assembly, the first magnetic circuit portion is provided with a first magnetic gap, and one end of the first voice coil is suspended in the first magnetic gap;

[0010] The second magnetic circuit portion is opposite to and spaced from the second vibration component. The second magnetic circuit portion is located on the side of the first magnetic circuit portion that is away from the first vibration component, and cooperates with the first magnetic circuit portion to form a second magnetic gap. The second voice coil is arranged in the second magnetic gap.

[0011] In one embodiment, the sound-generating device includes a housing, the housing including a first shell and a second shell arranged at an angle, the first shell and the second shell enclose a mounting cavity, and the magnetic circuit system is arranged in the mounting cavity; the first vibration component is connected to the first shell, and the second vibration component is connected to the second shell, wherein,

[0012] The vibration direction of the first vibration component is perpendicular to the vibration direction of the second vibration component;

[0013] And / or, the first shell and the second shell are arranged vertically;

[0014] The first diaphragm is connected to the first shell, and the second diaphragm is connected to the second shell.

[0015] In one embodiment, the first magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion, wherein the side magnetic circuit portion is arranged outside the central magnetic circuit portion and is spaced apart from the central magnetic circuit portion to form the first magnetic gap;

[0016] The second magnetic circuit portion is located on a side of the side magnetic circuit portion facing away from the first vibration component, and cooperates with the first magnetic circuit portion to form the second magnetic gap.

[0017] In one embodiment, the central magnetic circuit portion includes a central magnetic circuit, and the side magnetic circuit portion includes a side magnetic circuit and a second common magnetic circuit, wherein the side magnetic circuit is located outside the central magnetic circuit and is spaced apart to form a first sub-gap, and the second common magnetic circuit is located outside the central magnetic circuit and is spaced apart to form a second sub-gap, and the first sub-gap is connected to the second sub-gap to form the first magnetic gap;

[0018] The second magnetic circuit portion includes a third magnet, which is opposite to the second common magnetic circuit and forms the second magnetic gap therebetween.

[0019] In one embodiment, the second common magnetic circuit includes a second common magnet, and the third magnet is spaced apart from the second common magnet to form the second magnetic gap therebetween;

[0020] Alternatively, the second common magnetic circuit includes a second common magnet, the second common magnet including a main body and an extension portion bent and extended from one end of the main body close to the second sub-gap, the extension portion abutting against the third magnet or the basin frame, and the second magnetic gap is formed between the main body and the third magnet;

[0021] Alternatively, the second common magnetic circuit includes a second common magnet, the third magnet includes a second main body and a second extension extending from one end of the second main body close to the second sub-gap, the second extension abutting against the second common magnet, and the second magnetic gap is formed between the second main body and the second common magnet;

[0022] Alternatively, the second common magnetic circuit includes a second common magnetic conductive plate, the third magnet is opposite to and spaced from the second common magnetic conductive plate, and the second magnetic gap is formed between the third magnet and the second common magnetic conductive plate.

[0023] In one embodiment, the basin frame includes a first section, a second section and a third section connected in sequence, the first section and the third section are respectively arranged at an angle to the second section and are located on opposite sides of the second section; part of the first magnetic circuit is arranged in the first section, and part of the second magnetic circuit is arranged in the third section.

[0024] In one embodiment, the basin frame is provided with an air leakage hole, the air leakage hole is connected to the first magnetic gap and / or the second magnetic gap, and the sound-generating device further includes an isolation net provided corresponding to the air leakage hole;

[0025] And / or, the first section and the third section are parallel to the first shell.

[0026] In one embodiment, the first diaphragm is provided with a conductive layer, the lead of the first voice coil is electrically connected to the conductive layer, a first conductive insert is provided in the housing, the first conductive insert is used to be electrically connected to an external circuit, and an end of the conductive layer away from the first voice coil is electrically connected to the first conductive insert;

[0027] And / or, the first vibration assembly further includes a first centering support, one end of the first centering support is connected to the housing, and the other end of the first centering support is connected to an end of the first voice coil away from the first diaphragm;

[0028] And / or, the first vibration assembly further includes a first dome, the first dome being connected to a side of the first diaphragm facing away from the first voice coil;

[0029] And / or, the first voice coil is a ring-shaped voice coil.

[0030] In one embodiment, the second voice coil includes two long axis sides and two short axis sides connected end to end, each of the short axis sides is arranged between the two long axis sides, one of the long axis sides is connected to the second diaphragm, and the other long axis side is arranged in the second magnetic gap.

[0031] In one embodiment, the second diaphragm protrudes toward a side away from the magnetic circuit system or toward a side close to the magnetic circuit system.

[0032] In one embodiment, the first vibration component is used for producing bass sounds, and the second vibration component is used for producing treble sounds.

[0033] The present invention further provides an electronic device, comprising a device housing and the above-mentioned sound-generating device, wherein the sound-generating device is arranged in the device housing.

[0034] The sound-generating device of the technical solution of the present invention is configured with a first vibration component and a second vibration component in a vibration system, so that the first vibration component is opposite to the magnetic circuit system, and the second vibration component is opposite to the magnetic circuit system. In this way, the magnetic circuit system is utilized to simultaneously provide a magnetic field and a driving force for the first vibration component and the second vibration component, so as to improve the utilization rate of the magnetic field while reducing the cost and size. The vibration direction of the first vibration component and the vibration direction of the second vibration component are further configured to be at an angle. In this way, the vibration system can form two independent vibration radiation surfaces that are set at an angle, which not only realizes multifunctional applications, but also effectively improves the sound-generating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0036] FIG1 is a schematic structural diagram of a sound-generating device according to an embodiment of the present invention;

[0037] FIG2 is a schematic structural diagram of a sound-generating device from another perspective according to an embodiment of the present invention;

[0038] FIG3 is an exploded schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0039] FIG4 is a further exploded schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0040] FIG5 is a cross-sectional schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0041] FIG6 is a cross-sectional schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0042] FIG7 is a cross-sectional schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0043] FIG8 is a cross-sectional schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0044] FIG9 is a cross-sectional schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0045] FIG10 is an exploded schematic diagram of a housing according to an embodiment of the present invention;

[0046] FIG11 is a schematic plan view of a housing according to an embodiment of the present invention;

[0047] FIG12 is a plan view of a second voice coil according to an embodiment of the present invention;

[0048] FIG13 is a schematic diagram of the separation of the sound generating device and the sound guiding pipe according to an embodiment of the present invention;

[0049] FIG14 is a cross-sectional view of a combination of a sound-generating device and an electronic device according to an embodiment of the present invention;

[0050] FIG15 is a cross-sectional view of a combination of a sound-generating device and an electronic device according to an embodiment of the present invention;

[0051] FIG16 is a cross-sectional schematic diagram of a sound-generating device according to an embodiment of the present invention.

[0052] Description of Figure Numbers:

[0053] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0054] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. It should be understood that the described embodiments are merely a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0055] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0057] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] With the development of the portable consumer electronics market, micro-sound devices have been widely used. Furthermore, the increasing multifunctionality and miniaturization of portable terminal electronic products have placed higher demands on the vibroacoustic performance of micro-sound generators. Currently, micro-speaker modules in smart mobile terminals have a narrow effective frequency band, a relatively monotonous timbre, and poor sound quality, and cannot meet various functional requirements.

[0059] Based on the above concepts and problems, the present invention proposes a sound-generating device 100. It is understandable that the sound-generating device 100 is applied to electronic devices, which may be mobile phones, speakers, computers, headphones, watches, or televisions, etc., without limitation herein.

[0060] Please refer to Figures 1 to 16. In an embodiment of the present invention, the sound-generating device 100 includes a magnetic circuit system 2 and a vibration system 3. The vibration system 3 includes a first vibration component 31 and a second vibration component 32. The first vibration component 31 is opposite to the magnetic circuit system 2, and the second vibration component 32 is opposite to the magnetic circuit system 2. The vibration direction of the first vibration component 31 is set at an angle to the vibration direction of the second vibration component 32.

[0061] The sound-generating device 100 of the present invention is configured with a first vibration component 31 and a second vibration component 32 in the vibration system 3, so that the first vibration component 31 is opposite to the magnetic circuit system 2, and the second vibration component 32 is opposite to the magnetic circuit system 2. In this way, the magnetic circuit system 2 is utilized to simultaneously provide a magnetic field and a driving force for the first vibration component 31 and the second vibration component 32, so as to improve the utilization rate of the magnetic field while reducing costs. The vibration direction of the first vibration component 31 and the vibration direction of the second vibration component 32 are further configured to be at an angle. In this way, the vibration system 3 can form two independent vibration radiation surfaces that are set at an angle, which not only realizes multifunctional applications, but also effectively improves the sound-generating effect.

[0062] In one embodiment, the sound-generating device 100 further includes a housing 1 having a first mounting surface 123 and a second mounting surface 135. The first vibration assembly 31 is connected to the first mounting surface 123, and the second vibration assembly 32 is connected to the second mounting surface 135. The housing 1 is used to support and fix the magnetic circuit system 2 and the vibration system 3. It is understood that in other embodiments, the magnetic circuit system 2 may also have a supporting portion for supporting and fixing the first vibration assembly 31 and the second vibration assembly 32.

[0063] Optionally, as shown in Figures 3 to 9 and 16, the housing 1 includes a first shell 12 and a second shell 13 arranged at an angle, the first shell 12 and the second shell 13 enclose forming a mounting cavity, the magnetic circuit system 2 is arranged in the mounting cavity, the first shell 12 has a first mounting surface 123, the second shell 13 has a second mounting surface 135, the first vibration component 31 is connected to the first mounting surface 123 of the first shell 12 and is opposite to the magnetic circuit system 2, the second vibration component 32 is connected to the second mounting surface 135 of the second shell 13 and is opposite to the magnetic circuit system 2, and the vibration direction of the first vibration component 31 is set at an angle to the vibration direction of the second vibration component 32. Optionally, the first shell 12 and the second shell 13 are an integrally molded structure, thereby improving the structural strength and stability of the housing 1. It can be understood that the first shell 12 and the second shell 13 enclose forming a mounting cavity, and the mounting cavity can be a through cavity or a through slot structure. Optionally, the first shell 12 and the second shell 13 are arranged vertically.

[0064] In this embodiment, the first housing 12 has a rectangular structure, having two opposing long sides and two opposing short sides. The ends of the short sides are connected to the two long sides, and the ends of the long sides are connected to the two short sides. It will be appreciated that the second housing 13 is connected to either the long side or the short side of the first housing 12, such that the second housing 13 is perpendicular to the first housing 12.

[0065] It is understood that the second shell 13 can be optionally a rectangular structure, with the second shell 13 having two opposing long sides and two short sides, with the ends of the short sides respectively connected to the two long sides, and the ends of the long sides respectively connected to the two short sides. In this embodiment, the first shell 12 and the second shell 13 share a long side or a short side, that is, the first shell 12 and the second shell 13 have a common side. The two long sides and two short sides of the first shell 12 define a first opening 121, and the two long sides and two short sides of the second shell 13 define a second opening 131. The first opening 121 and the second opening 131 are respectively connected to the installation cavity. Optionally, the first opening 121 and the second opening 131 are located on two adjacent surfaces of the housing 1.

[0066] It should be noted that when the housing 1 is metal, the magnetic circuit system 2 is fixed to the housing 1 by bonding or welding. In another embodiment, when the housing 1 is plastic injection molded, the side magnetic conductive plate of the magnetic circuit system 2 is first injection molded into the housing 1 as an insert, or the magnetic circuit system 2 is fixed to the housing 1 by bonding, and then the other parts are bonded and fixed, which is not limited here.

[0067] In this embodiment, the magnetic circuit system 2 is disposed in the mounting cavity of the housing 1 and is connected to the first shell 12 and the second shell 13 of the housing 1. The vibration system 3 is connected to the first shell 12 and the second shell 13 of the housing 1 and is opposite to the magnetic circuit system 2. It can be understood that the first vibration component 31 of the vibration system 3 is connected to the first shell 12 and covers the first opening 121, and the second vibration component 32 is connected to the second shell 13 and covers the second opening 131. In this way, the first shell 12 and the second shell 13 of the housing 1, the first vibration component 31 and the second vibration component 32 and the magnetic circuit system 2 together enclose a vibration space.

[0068] It is understood that the first vibrating assembly 31 is opposite to the magnetic circuit system 2, and the second vibrating assembly 32 is opposite to the magnetic circuit system 2, so that the first vibrating assembly 31 and the second vibrating assembly 32 share the magnetic circuit system 2, thereby improving the utilization of the magnetic field while reducing the cost of the sound-generating device 100. In this embodiment, the vibration direction of the first vibrating assembly 31 is set at an angle to the vibration direction of the second vibrating assembly 32. Optionally, the vibration direction of the first vibrating assembly 31 is set perpendicular to the vibration direction of the second vibrating assembly 32.

[0069] In this embodiment, the magnetic circuit system 2 provides a magnetic field and a driving force for the first vibration component 31 and the second vibration component 32 to drive the first vibration component 31 and the second vibration component 32 to vibrate and generate sound respectively, thereby improving the sound effect.

[0070] The sound-generating device 100 of the present invention simplifies the design and assembly process of the sound-generating device 100 and facilitates production by configuring the outer shell 1 to be an angled first shell 12 and a second shell 13, which enclose a mounting cavity, and thereby utilizing the mounting cavity to mount a fixed magnetic circuit system 2 and a vibration system 3.

[0071] In one embodiment, the size of the magnetic circuit system 2 along the vibration direction of the first vibration component 31 is smaller than its size along the vibration direction of the second vibration component 32. This can reduce the size of the sound-generating device 100 and facilitate the miniaturized design of the sound-generating device 100.

[0072] In one embodiment, the magnetic circuit system 2 includes a basin frame 21, a first magnetic circuit portion 22 and a second magnetic circuit portion 23, wherein the first magnetic circuit portion 22 is arranged on the basin frame 21, and is opposite to and spaced from the first vibration component 31, and the first magnetic circuit portion 22 is provided with a first magnetic gap 221, and the second magnetic circuit portion 23 is arranged on the basin frame 21, and is opposite to and spaced from the second vibration component 32, and the second magnetic circuit portion 23 is located on the side of the first magnetic circuit portion 22 facing away from the first vibration component 31, and cooperates with the first magnetic circuit portion 22 to form a second magnetic gap 231.

[0073] In this embodiment, as shown in Figures 5 to 9 and 16, the basin 21 of the magnetic circuit system 2 provides an installation and fixing basis for the first magnetic circuit part 22 and the second magnetic circuit part 23. The first magnetic circuit part 22 and the second magnetic circuit part 23 are arranged on the side of the basin 21 facing the outer shell 1, and the magnetic circuit system 2 is connected to the first shell 12 and the second shell 13 of the outer shell 1 through the first magnetic circuit part 22 and the second magnetic circuit part 23.

[0074] It is understood that the first magnetic circuit portion 22 and the second magnetic circuit portion 23 can be connected and fixed to the frame 21 by bonding. The frame 21 can be a magnetically conductive plate or a magnetically conductive frame 21, etc., and is not limited here. The first magnetic circuit portion 22 and the second magnetic circuit portion 23 can be connected to the first shell 12 and the second shell 13 of the housing 1 by bonding, welding, etc., and is not limited here.

[0075] In this embodiment, by providing a first magnetic gap 221 in the first magnetic circuit portion 22, the first magnetic gap 221 is utilized to provide an avoidance and vibration space for the first vibration component 31. By providing the second magnetic circuit portion 23 on the side of a portion of the first magnetic circuit portion 22 facing away from the first vibration component 31, and opposite to and spaced from the second vibration component 32, the second magnetic circuit portion 23 cooperates with a portion of the first magnetic circuit portion 22 to form a second magnetic gap 231. While utilizing the second magnetic gap 231 to provide an avoidance and vibration space for the second vibration component 32, the first vibration component 31 and the second vibration component 32 share a portion of the first magnetic circuit portion 22, thereby improving the magnetic field utilization of the magnetic circuit system 2 while effectively reducing costs.

[0076] In order to facilitate the installation and fixation of the first magnetic circuit portion 22 and the second magnetic circuit portion 23, and to make the first magnetic circuit portion 22 and the second magnetic circuit portion 23 opposite to the first vibration component 31 and the second vibration component 32 respectively, in one embodiment, the basin frame 21 includes a first section 211, a second section 212 and a third section 213 connected in sequence, and the first section 211 and the third section 213 are respectively arranged at an angle to the second section 212, and are located on opposite sides of the second section 212; part of the first magnetic circuit portion 22 is arranged in the first section 211, and the second magnetic circuit portion 23 is arranged in the third section 213.

[0077] In this embodiment, as shown in Figures 2, 5 to 9, and 16, the first section 211, the second section 212, and the third section 213 of the basin frame 21 are an integrally formed structure. Optionally, the first section 211, the second section 212, and the third section 213 form a Z-shaped structure, so that the second section 212 is used to form a height difference between the first section 211 and the third section 213, thereby facilitating the use of the first section 211 of the basin frame 21 to install and fix the first magnetic circuit portion 22, and the use of the second section 212 and the third section 213 of the basin frame 21 to install and fix the second magnetic circuit portion 23, and making the second magnetic circuit portion 23 located below the portion of the first magnetic circuit portion 22 corresponding to the third section 213. In this way, while improving the compactness of the structure, the second vibration component 32 shares part of the first magnetic circuit portion 22.

[0078] Optionally, the first section 211 and the third section 213 are parallel to the first housing 12, or the second section 212 is parallel to the second housing 13, making the appearance of the sound-generating device 100 more regular and easier to install in an external environment. The second magnetic circuit portion 23 can further be connected to the second section 212 to increase the connection reliability of the second magnetic circuit.

[0079] In the sound-generating device 100 of the present invention, the first magnetic circuit portion 22 includes a central magnetic circuit portion 222 and a side magnetic circuit portion 223. The side magnetic circuit portion 223 is arranged on the outside of the central magnetic circuit portion 222 and is spaced from the central magnetic circuit portion 222 to form a first magnetic gap 221.

[0080] As shown in Figures 3 to 9 and 16, part of the central magnetic circuit portion 222 and part of the side magnetic circuit portion 223 of the first magnetic circuit portion 22 are mounted and fixed to the first section 211 of the frame 21, and the first magnetic circuit portion 22 is connected and fixed to the first shell 12 of the housing 1 via the side magnetic circuit portion 223. Optionally, the frame 21 is bonded to the central magnetic circuit portion 222 and the side magnetic circuit portion 223, and the side magnetic circuit portion 223 is bonded to the first shell 12 of the housing 1.

[0081] It is understood that the central magnetic circuit portion 222 includes a stacked central magnet and a central washer, with the central magnet disposed between the central washer and the basin frame 21. The side magnetic circuit portion 223 includes a stacked side magnet and a side washer, with the side magnet disposed between the side washers and the basin frame 21. It is understood that the side washers of the side magnetic circuit portion 223 can be bonded to the housing 1. Optionally, the side washers and the housing 1 are integrally formed.

[0082] In this embodiment, the center and side washers can be configured as magnetically conductive plates. The center magnet 22211 and the center washer have the same structural profile, and can be either plate-shaped or ring-shaped, without limitation. The side magnets and side washers have the same structural profile, and can be either plate-shaped or ring-shaped, without limitation.

[0083] It is understood that the side magnetic path portion 223 can be an annular structure, wherein the annular side magnetic path portion 223 surrounds the central magnetic path portion 222 and is spaced apart from the central magnetic path portion 222 to form an annular first magnetic gap 221. Alternatively, the side magnetic path portion 223 can be annular, or a polygonal shape such as a quadrilateral, pentagon, or hexagon.

[0084] Of course, the side magnetic circuit portion 223 includes multiple side magnetic circuit portions 223, and the multiple side magnetic circuit portions 223 are arranged at intervals and around the central magnetic circuit portion 222.

[0085] In one embodiment, the side magnetic circuit portions 223 include a plurality of side magnetic circuit portions 223, which are arranged around the central magnetic circuit portion 222 and are spaced apart from the central magnetic circuit portion 222 to form a first magnetic gap 221, and two adjacent side magnetic circuit portions 223 are spaced apart to form a gap connecting the first magnetic gap 221.

[0086] In one embodiment, the central magnetic circuit portion 222 and the side magnetic circuit portion 223 of the first magnetic circuit portion 22 are both magnetized vertically, with the magnetization directions of the central magnetic circuit portion 222 and the side magnetic circuit portion 223 being opposite. It will be appreciated that the central magnet 22211 of the central magnetic circuit portion 222 and the side magnets 22311 of the side magnetic circuit portion 223 are both magnetized vertically, with the magnetization directions of the central magnet 22211 and the side magnets 22311 being opposite. It will be appreciated that this configuration optimizes the nonlinear performance of the BL.

[0087] Optionally, the magnetization direction of the central magnetic circuit portion 222 and the side magnetic circuit portion 223 of the first magnetic circuit portion 22 is the same as the vibration direction of the first vibrating assembly 31, that is, the first vibrating assembly 31 vibrates in the vertical direction. It can be understood that the magnetization direction of the central magnet of the central magnetic circuit portion 222 and the side magnets of the side magnetic circuit portion 223 is the same as the vibration direction of the first vibrating assembly 31, that is, the central magnet of the central magnetic circuit portion 222 and the side magnets of the side magnetic circuit portion 223 are both magnetized in the vertical direction.

[0088] In one embodiment, the second magnetic circuit portion 23 is opposed to and spaced apart from a portion of the central magnetic circuit portion 222 and a portion of the side magnetic circuit portion 223 to cooperatively form a second magnetic gap 231. It will be appreciated that the second magnetic circuit portion 23 is opposed to and spaced apart from a portion of the central magnetic circuit portion 222 to form a third sub-gap, and the second magnetic circuit portion 23 is opposed to and spaced apart from a portion of the side magnetic circuit portion 223 to form a fourth sub-gap. The third and fourth sub-gaps are connected to form a second magnetic gap 231.

[0089] In this embodiment, the central magnetic circuit portion 222 includes a connected central magnetic circuit 2221 and a first common magnetic circuit 2222, and the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232. The side magnetic circuit 2231 is located on the outside of the central magnetic circuit 2221 and is spaced to form a first sub-gap 2211. The second common magnetic circuit 2232 is located on the side of the first common magnetic circuit 2222 facing away from the central magnetic circuit 2221 and is spaced to form a second sub-gap 2212. The first sub-gap 2211 is connected to the second sub-gap 2212 to form a first magnetic gap 221. The second magnetic circuit portion 23 is opposite to and spaced from the first common magnetic circuit 2222 to form a third sub-gap. The second magnetic circuit portion 23 is opposite to and spaced from the second common magnetic circuit 2232 to form a fourth sub-gap. The third sub-gap and the fourth sub-gap are connected to form a second magnetic gap 231.

[0090] Optionally, the second magnetic circuit portion 23 can be an integral structure or a split structure. As one embodiment, as shown in FIG16 , the second magnetic circuit portion 23 includes a first magnet 233 and a second magnet 234 spaced apart from each other, wherein the first magnet 233 is located below the first common magnetic circuit 2222 and is opposite to and spaced apart from the first common magnetic circuit 2222 to form a third sub-gap, and the second magnet 234 is located below the second common magnetic circuit 2232 and is opposite to and spaced apart from the second common magnetic circuit 2232 to form a fourth sub-gap, and the third sub-gap and the fourth sub-gap are connected to form a second magnetic gap 231.

[0091] In other embodiments, the second magnetic circuit portion 23 is an integral structure, the first magnet 233 is a magnetized region of the second magnetic circuit portion 23 , and the second magnet 234 is a magnetized region of the second magnetic circuit portion 23 .

[0092] In this embodiment, the central magnetic circuit 2221 and the first common magnetic circuit 2222 of the central magnetic circuit portion 222 can be an integrally formed structure, or can be separate structures connected together by bonding or other means. It is understandable that the central magnetic circuit 2221 and the first common magnetic circuit 2222 both include a central magnet 22211 and a central washer 22212, and the central washer of the central magnetic circuit 2221 and the first common magnetic circuit 2222 can be an integral structure, that is, the central magnetic circuit 2221 and the first common magnetic circuit 2222 share a central washer, which is not limited here.

[0093] It is understood that the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232, that is, part of the side magnetic circuit portion 223 is the second common magnetic circuit 2232, and another part of the side magnetic circuit portion 223 is the side magnetic circuit 2231. Optionally, the side magnetic circuit 2231 and the second common magnetic circuit 2232 of the side magnetic circuit portion 223 can be an integrally connected structure or can be separately arranged.

[0094] In this embodiment, the side magnetic circuit portions 223 include a plurality of side magnetic circuit portions 223, each of which includes a side magnetic circuit 2231 and a second common magnetic circuit 2232. Optionally, the side magnetic circuit portions 223 include four, one being the second common magnetic circuit 2232 and three being the side magnetic circuits 2231. It will be appreciated that the three side magnetic circuits 2231 are spaced apart outside the central magnetic circuit 2221 and are spaced apart from the central magnetic circuit 2221 to form a first sub-gap 2211. The second common magnetic circuit 2232 is located on a side of the first common magnetic circuit 2222 that faces away from the central magnetic circuit 2221 and is spaced apart to form a second sub-gap 2212. The first sub-gap 2211 is connected to the second sub-gap 2212 to form a first magnetic gap 221.

[0095] It should be noted that both the side magnetic circuit 2231 and the second common magnetic circuit 2232 include stacked side magnets and side washers, and the side magnets are arranged between the side washers and the basin frame 21 .

[0096] In order to enable the magnetic circuit system 2 to simultaneously provide a magnetic field and driving force for the first vibration component 31 and the second vibration component 32, the central magnetic circuit portion 222 and the side magnetic circuit portion 223 are both magnetized along the vibration direction of the first vibration component 31 and the magnetization directions are opposite, the first magnet 233 and the second magnet 234 are both magnetized along the vibration direction of the first vibration component 31 and the magnetization directions are opposite, and the magnetization directions of the first magnet 233 and the central magnetic circuit portion 222 are the same.

[0097] To ensure that the second magnetic circuit portion 23 cooperates with the first common magnetic circuit 2222 and the second common magnetic circuit 2232 to provide a sufficient magnetic field, the thickness of the first common magnetic circuit 2222 is optionally greater than or equal to the thickness of the central magnetic circuit 2221. Optionally, the thickness of the second common magnetic circuit 2232 is greater than or equal to the thickness of the side magnetic circuit 2231. It will be appreciated that the thickness of the magnets in the first common magnetic circuit 2222 and the second common magnetic circuit 2232 is greater than or equal to the thickness of the magnets in the central magnetic circuit 2221 and the side magnetic circuit 2231.

[0098] In this embodiment, the thickness of the first magnet 233 is greater than or equal to the thickness of the central magnetic circuit 2221, and the thickness of the second magnet 234 is greater than or equal to the thickness of the side magnetic circuit 2231. Optionally, the first common magnetic circuit 2222 and the second common magnetic circuit 2232 are magnetized in a vertical direction, and the magnets of the first common magnetic circuit 2222 and the second common magnetic circuit 2232 are magnetized in opposite directions.

[0099] Optionally, the first magnet 233 and the first common magnetic circuit 2222 are magnetized in the vertical direction, with the magnetization directions of the first magnet 233 and the magnetization directions of the first common magnetic circuit 2222 being the same. The second magnet 234 and the second common magnetic circuit 2232 are magnetized in the vertical direction, with the magnetization directions of the second magnet 234 and the magnetization directions of the second common magnetic circuit 2232 being the same. This configuration can optimize the nonlinear performance of the BL.

[0100] It is understood that the magnetization direction of the first magnet 233 and the first common magnetic circuit 2222 is the same as the vibration direction of the first vibrating component 31, that is, the first vibrating component 31 vibrates in the vertical direction. The magnetization direction of the second magnet 234 and the second common magnetic circuit 2232 is the same as the vibration direction of the first vibrating component 31.

[0101] In one embodiment, the second magnetic circuit portion 23 is opposed to a portion of the side magnetic circuit portion 223, and a second magnetic gap 231 is formed therebetween. As shown in Figures 3 to 9, the central magnetic circuit portion 222 includes a central magnetic circuit 2221, and the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232. The side magnetic circuit 2231 is located outside the central magnetic circuit 2221 and is separated from the central magnetic circuit to form a first sub-gap 2211. The second common magnetic circuit 2232 is located outside the central magnetic circuit 2221 and is separated from the central magnetic circuit to form a second sub-gap 2212. The first sub-gap 2211 and the second sub-gap 2212 are connected to form the first magnetic gap 221. The second magnetic circuit portion 23 and the second common magnetic circuit 2232 form a second magnetic gap 231.

[0102] In this embodiment, the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232. That is, part of the side magnetic circuit portion 223 is the second common magnetic circuit 2232, and another part of the side magnetic circuit portion 223 is the side magnetic circuit 2231. Optionally, the side magnetic circuit 2231 and the second common magnetic circuit 2232 of the side magnetic circuit portion 223 can be an integrally connected structure or can be arranged separately.

[0103] In this embodiment, the side magnetic circuit sections 223 include multiple side magnetic circuit sections 223, each including a side magnetic circuit 2231 and a second common magnetic circuit 2232. Optionally, the side magnetic circuit sections 223 include four, one second common magnetic circuit 2232 and three side magnetic circuits 2231. It will be appreciated that the three side magnetic circuits 2231 are spaced apart outside the central magnetic circuit 2221 and spaced apart from the central magnetic circuit 2221 to form a first sub-gap 2211. The second common magnetic circuit 2232 is spaced apart outside the central magnetic circuit 2221 and spaced apart from the central magnetic circuit 2221 to form a second sub-gap 2212. The first sub-gap 2211 and the second sub-gap 2212 are connected to form a first magnetic gap 221. Optionally, the thickness of the second common magnetic circuit 2232 is less than or equal to the thickness of the side magnetic circuit 2231.

[0104] It should be noted that the central magnetic circuit 2221 includes a stacked central magnet 22211 and a central washer 22212, and the central magnet 22211 is arranged between the central washer 22212 and the basin frame 21. The side magnetic circuit 2231 includes a stacked first side magnet 22311 and a first side washer 22312, and the first side magnet 22311 is arranged between the first side washer 22312 and the basin frame 21. The second common magnetic circuit 2232 includes a second common washer 22322, and the first side washer 22312 and the second common washer 22322 are both arranged opposite to the central washer 22212.

[0105] In one embodiment, the second magnetic circuit portion 23 includes a third magnet 232 . The third magnet 232 is opposite to the second common magnetic circuit 2232 and a second magnetic gap 231 is formed therebetween.

[0106] In this embodiment, the second common magnetic circuit 2232 can be configured in a variety of ways. As shown in FIG7 , to reduce the thickness of the sound-generating device 100, the second common magnetic circuit 2232 can include only a second common washer 22322. The third magnet 232 opposes and is spaced apart from the second common washer 22322, forming a second magnetic gap 231 therebetween. It will be appreciated that the second common washer 22322 opposes the center washer 22212, and the thickness of the second common washer 22322 is less than that of the side magnetic circuit 2231.

[0107] Alternatively, as shown in FIG6 , to enhance the magnetic field strength of the second magnetic gap 231, the second shared magnetic circuit 2232 includes a second shared washer 22322 and a second shared magnet 22321 located on a side of the second shared washer 22322 near the basin frame 21. The third magnet 232 opposes and is spaced apart from the second shared magnet 22321, forming the second magnetic gap 231 therebetween. Optionally, the thickness of the second shared magnet 22321 is less than that of the first side magnet 22311. This allows the sound-generating device 100 to have a smaller thickness.

[0108] Alternatively, as shown in FIG5 , to further compensate for magnetic field loss in the second sub-magnetic gap, the second common magnetic circuit 2232 includes a second common washer 22322 and a second common magnet 22321 disposed on the second common washer 22322 near the second magnetic circuit portion 23. The second common magnet 22321 includes a main body 22323 and an extension 22324 extending from one end of the main body 22323 near the second sub-gap 2212. The extension 22324 abuts against the third magnet 232 or the bracket 21, forming a second magnetic gap 231 between the main body 22323 and the third magnet 232. Optionally, the thickness of the second common magnet 22321 is less than or equal to the thickness of the first side magnet 22311.

[0109] In other embodiments, the second magnetic gap 231 may be formed in different ways. Optionally, the second common magnetic circuit 2232 includes a second common magnet 22321, and the third magnet 232 includes a second main body and a second extension extending from one end of the second main body near the second sub-gap 2212. The second extension abuts the second common magnet 22321, forming the second magnetic gap 231 between the second main body and the second common magnet 22321.

[0110] In one embodiment, the thickness of the third magnet 232 is less than or equal to the thickness of the side magnetic path 2231 , which can provide sufficient magnetic field strength for the second magnetic gap 231 and reduce the height of the sound-generating device 100 .

[0111] To ensure air pressure balance in the vibration space within the sound-generating device 100 and thus maintain vibration balance between the first vibration assembly 31 and the second vibration assembly 32, in one embodiment, the basin frame 21 is provided with an air vent 214. To prevent impurities or sound-absorbing particles from entering the sound-generating device 100 through the air vent 214 and affecting the performance of the sound-generating device 100, the sound-generating device 100 further includes an air-permeable isolation member 4 provided corresponding to the air vent 214.

[0112] In one embodiment, as shown in FIG. 3 and FIG. 4 , the vent holes 214 are provided at the four corners of the first section 211 , and the vent holes 214 correspond to the first magnetic gap 221 and / or the gap formed between the two side magnetic path portions 223 .

[0113] In one embodiment, the first vibration component 31 includes a first diaphragm 311 and a first voice coil 312, wherein the first diaphragm 311 is connected to the first shell 12, the first voice coil 312 surrounds the central magnetic circuit portion 222, one end of the first voice coil 312 is connected to the diaphragm, and the other end is suspended in the first magnetic gap 221.

[0114] In this embodiment, the first diaphragm 311 includes a central portion, a folded ring portion arranged around the central portion, and a fixed portion arranged outside the folded ring portion. The fixed portion is connected to the first shell 12 of the outer shell 1 so that the first diaphragm 311 covers the first opening 121. It can be understood that the central portion, the folded ring portion and the fixed portion of the first diaphragm 311 are an integrally formed structure. The folded ring portion is arranged around the central portion and is located between the central portion and the fixed portion. The folded ring portion can be a raised structure facing upward or downward. The first diaphragm 311 is connected and fixed to the first shell 12 of the outer shell 1 of the sound-emitting device 100 through the fixed portion to improve the connection stability and sealing between the outer shell 1 and the first diaphragm 311.

[0115] It is understandable that in order to increase the effective vibration area of ​​the first diaphragm 311 , the fixing portion may be formed by extending downward or upward from the outer side of the folding ring portion so that the fixing portion is connected and fixed to the inner wall or outer wall of the housing 1 .

[0116] In one embodiment, the first diaphragm 311 is provided with a conductive layer, one end of the first voice coil 312 is connected to the first diaphragm 311, the lead of the first voice coil 312 is electrically connected to the conductive layer, and the end of the conductive layer away from the first voice coil 312 is electrically connected to the first conductive insert 122 in the housing 1. The external circuit is conductively connected to the conductive layer through the first conductive insert 122, thereby achieving conductivity between the first voice coil 312 and the external circuit.

[0117] Optionally, the first diaphragm 311 is arranged in a square shape, and the conductive layer can be arranged at the corner portion of the first diaphragm 311. Of course, the conductive layer can also be arranged at the long axis side or short axis side of the first diaphragm 311, etc., which is not limited here.

[0118] In this embodiment, the conductive layer is electrically conductive, allowing the first voice coil 312 to achieve electrical continuity with an external circuit via the conductive layer. It is understood that the conductive layer can be applied to the first diaphragm 311 by bonding or spraying. Optionally, the conductive layer can be applied to the side of the first diaphragm 311 facing the magnetic circuit system 2, for example, by coating and curing to form a coating structure, which is not limited herein.

[0119] In this embodiment, the first voice coil 312 may be a square or racetrack-shaped ring structure. The first voice coil 312 has two long axis sides and two short axis sides connected end to end. That is, the two short axis sides of the first voice coil 312 are opposite and spaced apart, and the two long axis sides are opposite and spaced apart, so that the long axis sides and the short axis sides are connected end to end to form a ring structure.

[0120] In this embodiment, a hollow hole is provided in the central portion of the first diaphragm 311, thereby effectively reducing the overall weight of the first diaphragm 311. Optionally, a hollow hole is provided at the center of the central portion, and the hollow hole can be a through hole, a hollow hole, or an opening. Optionally, there can be one or more hollow holes, which is not limited here.

[0121] In order to strengthen the structural strength of the first diaphragm 311 and prevent the first diaphragm 311 from shrinking and deforming more during the vibration process, in one embodiment, the first vibration component 31 further includes a first dome 314, which is connected to the side of the first diaphragm 311 facing away from the first voice coil 312. It can be understood that by arranging the first dome 314 in the central part of the first diaphragm 311, the first dome 314 is connected to the central part, and covers the hollow hole, on the one hand, the structural strength of the first diaphragm 311 is strengthened, and on the other hand, external impurities or dust can be prevented from entering the interior of the sound-emitting device 100 through the hollow hole, and at the same time, the first diaphragm 311 can be prevented from shrinking and deforming more during the vibration process, thereby reducing the THD distortion of the sound-emitting device 100 and improving the audio effect.

[0122] In one embodiment, as shown in FIG4 , the first vibration assembly 31 further includes a first centering support 313 , one end of which is connected to the housing 1 , and the other end of which is connected to an end of the first voice coil 312 away from the first diaphragm 311 .

[0123] In this embodiment, one end of the first damper 313 is connected to the first shell 12 of the housing 1, and the other end of the first damper 313 is connected to the side of the first voice coil 312 facing away from the first diaphragm 311. It will be appreciated that by providing the first damper 313 so that one end of the first damper 313 is connected to the first shell 12 of the housing 1 and the other end of the first damper 313 is connected to the first voice coil 312, the first damper 313 is utilized to balance and stabilize the vibration of the first diaphragm 311 driven by the first voice coil 312, thereby preventing the first diaphragm 311 from swinging or polarizing due to the first voice coil 312.

[0124] Optionally, four first centering dampers 313 are provided, corresponding to the four notches in the first magnetic circuit portion 22 of the magnetic circuit system 2. Alternatively, two first centering dampers 313 are provided, one on each side of the minor axis of the first voice coil 312. In this embodiment, the first centering damper 313 includes an outer fixing portion, an inner fixing portion, and an elastic portion connected between the outer and inner fixing portions. The outer fixing portion is connected to the first shell 12 of the housing 1, and the inner fixing portion is connected to the first voice coil 312.

[0125] The first centering support piece 313 can be made of PI material, or the first centering support piece 313 can be made of FPCB, or a conductive circuit is provided in the first centering support piece 313, so that one end of the first centering support piece 313 can be conductively connected to the lead of the first voice coil 312, and the other end of the first centering support piece 313 is fixed on the housing 1 for connecting to the external circuit. In this way, the external circuit is connected to the first voice coil 312 by using the first centering support piece 313, which effectively avoids the risk of the lead of the first voice coil 312 being broken during vibration.

[0126] In one embodiment, as shown in FIG. 3 to FIG. 9 and FIG. 16 , the second vibration assembly 32 includes a second diaphragm 321 and a second voice coil 323 , wherein the second diaphragm 321 is connected to the second housing 13 and has a connection area 3221 connected to the second voice coil 323 .

[0127] In this embodiment, the second voice coil 323 may be a flat voice coil having a square or racetrack-shaped ring structure. It is understood that the second voice coil 323 has two long axis sides and two short axis sides connected end to end, with each short axis side disposed between the two long axis sides. In other words, the two short axis sides of the second voice coil 323 are opposite and spaced apart, while the two long axis sides are opposite and spaced apart, so that the long axis sides and the short axis sides are connected end to end to form a ring structure.

[0128] In one embodiment, as shown in Figure 16, the second magnetic circuit portion 23 is opposite to and spaced from a portion of the central magnetic circuit portion 222 and a portion of the side magnetic portion to form a second magnetic gap 231, and the second voice coil 323 is disposed in the second magnetic gap 231. At this time, both long axis sides of the second voice coil 323 are disposed in the second magnetic gap 231.

[0129] More specifically, the second magnetic circuit portion 23 is opposite to and spaced from a portion of the center magnetic circuit portion 222 to form a third sub-gap, and the second magnetic circuit portion 23 is opposite to and spaced from a portion of the side magnetic circuit portion 223 to form a fourth sub-gap. The third sub-gap and the fourth sub-gap are connected to form a second magnetic gap 231. One of the long axis sides of the second voice coil 323 is arranged in the third sub-gap, and the other long axis side is arranged in the fourth sub-gap.

[0130] In one embodiment, as shown in Figures 3 to 9, the second magnetic circuit portion 23 is opposite to a portion of the edge magnetic portion and is separated to form a second magnetic gap 231. One of the long axis sides of the second voice coil 323 is connected to the second diaphragm 321, and the other long axis side is arranged in the second magnetic gap 231.

[0131] In one embodiment, as shown in Figures 5 to 7 and 9 , the plane in which the second voice coil 323 lies is perpendicular to the vibration direction of the first vibrating assembly 31. That is, the plane in which the second voice coil 323 lies is parallel to the first mounting surface 123. This design results in a more regular magnetic circuit profile for the side magnetic path portion 223 and the second magnetic path portion 23, reducing the production and assembly costs of the magnetic circuit system 2.

[0132] In one embodiment, as shown in Figures 3 to 9, the first shell 12 and the second shell 13 have a common common edge 133, which defines that the first vibration component 31 vibrates along the first direction, and the second shell 13 includes a common edge 133 and a first edge 134 distributed along the first direction. Along the first direction, the outer edge of the common edge 133 has a first extension portion 1331 that extends beyond the magnetic circuit system 2 and is used to install the first vibration membrane 311, and the outer edge of the first edge 134 is flush with the magnetic circuit system 2; the second vibration component 32 is defined to vibrate along the second direction, and a second extension portion 1332 for installing the second vibration membrane 321 is extended along the second direction on the side opposite to the common edge 133 and the first edge 134, and the connection area 3221 deviates from the center position of the second vibration membrane 321 along the first direction and is located on the side of the center position away from the first vibration component 31.

[0133] It can be understood that in this embodiment, in the second direction, the edge of the second diaphragm 321 close to the basin frame 21 is roughly flush with the magnetic circuit system 2, and the edge away from the magnetic circuit system 2 can be extended and fixed to the second extension portion 1332 of the fixed edge. In this way, while ensuring the appropriate position of the second voice coil 323, the vibration area of ​​the second diaphragm 321 is increased as much as possible, thereby improving the sound performance of the second diaphragm 321.

[0134] In one embodiment, to enhance the structural strength of the second diaphragm 321, the second diaphragm 321 further includes a second dome 322, which is located at the center of the second diaphragm 321. The second voice coil 323 is connected to the second dome 322, and the second dome 322 has a connection region 3221 connected to the second voice coil 323. It will be appreciated that the connection region 3221 is located on a side of the center of the second dome 322 away from the first vibration assembly 31.

[0135] Of course, in other embodiments, the plane where the second voice coil 323 is located is perpendicular to the second mounting surface 135. In this way, the center position of the second voice coil 323 can be adjusted to make the second diaphragm 321 symmetrical with respect to the second voice coil 323, thereby improving its sound effect.

[0136] Specifically, the side magnetic circuit portion 223 has a first surface facing the second magnetic circuit portion 23, and the second magnetic circuit portion 23 has a second surface facing the side magnetic circuit portion 223. The first surface and the second surface are both inclined and parallel to each other, forming a second magnetic gap 231 therebetween. The extension direction of the second magnetic gap 231 is perpendicular to the second mounting surface 135.

[0137] In one embodiment, the aspect ratio of the inner diameter of the second voice coil 323 is less than or equal to 20 to reduce the difficulty of winding the second voice coil 323. Optionally, two second voice coils 323 are included, each having an aspect ratio of the inner diameter less than or equal to 20, and the second voice coils 323 are distributed along the long axis of the second voice coil 323. It is understood that the second voice coils 323 are distributed along the length of the second magnetic gap 231.

[0138] In one embodiment, the second diaphragm 321 protrudes toward the side away from the magnetic circuit system 2. Alternatively, the second diaphragm 321 protrudes toward the side close to the magnetic circuit system 2. In this way, when the sound-generating device 100 is mounted on an electronic device such as smart glasses, it can better match the shape of the electronic device, reduce the space occupied by the electronic device, and can be flexibly selected according to actual conditions.

[0139] In one embodiment, as shown in Figures 13 to 14 and 16 , the sound-generating device 100 further includes a sound-conducting pipe 61, which is disposed corresponding to the second vibration assembly 32. As will be appreciated, the sound-conducting pipe 61 is hollow, so that the sound generated by the second diaphragm 321 of the second vibration assembly 32 can be smoothly transmitted through the sound-conducting pipe 61, thereby enhancing the sound-generating effect of the second vibration assembly 32.

[0140] Furthermore, as shown in Figures 13 and 14, the first shell 12 and the second shell 13 are arranged vertically, and the side of the sound-conducting tube 61 away from the second vibration component 32 is an inclined surface, and there is an angle between the inclined surface and the second shell 13. In this way, it is convenient to assemble the sound-emitting device 100 with external devices. For example, when assembling with an electronic device, while applying force to the mounting surface of the first shell 12 for assembly, the inclined surface of the sound-conducting tube 61 can also be tightened by force, thereby improving the operability of the sound-emitting device 100 during assembly. Furthermore, the distance between the end of the inclined surface close to the first vibration component 31 and the second vibration component 32 is smaller than the distance between the end of the inclined surface away from the first vibration component 31 and the second vibration component 32.

[0141] As shown in FIG14 , the inner wall of the device housing 7 of the electronic device is provided with a first assembly surface 71 and a second assembly surface 72 corresponding to the first mounting surface 123 and the inclined surface, respectively. The angle between the first assembly surface 71 and the second assembly surface 72 is greater than 90°, and the first assembly surface 71 and the first mounting surface 123, as well as the second assembly surface 72 and the inclined surface, are sealed. It is understood that when force is applied to assemble the first mounting surface 123 to seal it with the first assembly surface 71, the inclined surface can also be tightened due to its inclined configuration, thereby improving the sealing performance between it and the second assembly surface 72. This improves the operability of the sound-generating device 100 during assembly.

[0142] It can be understood that a sealing foam 62 is provided on the surface of the sound-conducting tube 61 away from the second vibration component 32 to improve the sealing between the sound-conducting tube 61 and the external device, thereby improving the sound quality of the sound-generating device 100.

[0143] Furthermore, a heat-melting column is provided on the surface of the second shell 1 , and a fixing portion is correspondingly provided on the sound-conducting tube 61 . The second shell 1 and the sound-conducting tube 61 are fixed by heat-melting to improve the installation reliability of the sound-conducting tube 61 .

[0144] Of course, in other embodiments of the sound-generating device 100, as shown in FIG15 , the sound-generating device 100 may not be provided with the sound-conducting duct 61. Instead, the first mounting surface 123 may be arranged horizontally, and the second mounting surface 135 may be arranged at an angle, that is, the angle between the first mounting surface 123 and the second mounting surface 135 is greater than 90°, to improve assembly operability. Thus, by angling the second mounting surface 135, the assembly operability of the sound-generating device 100 can also be improved.

[0145] In the sound-producing device 100 of the present invention, after receiving an external alternating current signal, the first voice coil 312, disposed within the first magnetic gap 221, is driven by the magnetic field force of the first magnetic circuit portion 22 of the magnetic circuit system 2 to reciprocate and cut through the magnetic lines of force, thereby driving the first diaphragm 311 of the first vibrating assembly 31 of the vibration system 3 to vibrate vertically and produce sound. After receiving an external alternating current signal, the second voice coil 323, driven by the magnetic field force within the second magnetic gap 231 formed by the second magnetic circuit portion 23 and the first magnetic circuit portion 22 of the magnetic circuit system 2, reciprocates and cuts through the magnetic lines of force in the left-right direction. This fully utilizes the magnetic field of the magnetic circuit system 2, allowing the first voice coil 312 and the second voice coil 323 to respectively drive the first diaphragm 311 and the second diaphragm 321 to vibrate and produce sound, thereby effectively improving the sound quality of the sound-producing device 100.

[0146] In the sound-generating device 100 of the present invention, the first vibration component 31 is used for bass sounding, and the second vibration component 32 is used for treble sounding. In this way, the bandwidth of the sound-generating device 100 can be expanded, making the timbre of the sound-generating device 100 fuller and rounder.

[0147] Specifically, the sound-generating device 100 has a crossover frequency F1. When the sound-generating device 100 is used in an electronic device, the Fh (front cavity resonant frequency) corresponding to the first vibration component 31 is greater than or equal to 4 kHz and less than or equal to 7 kHz, and F1>Fh. This prevents a sudden phase shift between the sound waves of the first vibration component 31 and the second vibration component 32 at the crossover frequency F1, ensuring that the vibration directions of the first vibration component 31 and the second vibration component 32 at the crossover frequency F1 are consistent, and the sound pressure of the sound-generating device 100 is stable.

[0148] Optionally, F1 is greater than or equal to 6 kHz, so that the sound pressure level curve of the sound-generating device 100 formed by combining the first vibration component 31 and the second vibration component 32 is relatively smooth, does not produce a large trough, and has a natural listening experience.

[0149] Furthermore, the crossover frequency F1 is greater than or equal to 6kHz and less than or equal to 10kHz. The crossover frequency F1 can be 6kHz, 6.5kHz, 7kHz, 7.5kHz, 8kHz, 8.5kHz, 9kHz, 9.5kHz, 10kHz, etc. In this way, the sound pressure levels of the first vibration component 31 and the second vibration component 32 can be better connected at the crossover frequency, and the sound quality is richer and more natural. The bass of the sound-emitting device 100 in this embodiment is deep and powerful, and the treble is clear and rich.

[0150] In one embodiment, a conductive insert is provided in the housing 1 of the sound-generating device 100 . The conductive insert includes a first conductive insert 122 and a second conductive insert 132 . Both the first conductive insert 122 and the second conductive insert 132 are electrically connected to an external circuit.

[0151] As shown in Figures 10 and 11, the first conductive inlay 122 electrically connects the first vibration component 31 and the external circuit, and the second conductive inlay 132 electrically connects the second vibration component 32 and the external circuit, thereby achieving electrical connection between the first voice coil 312 and the second voice coil 323 and the external circuit. Specifically, the two ends of the first conductive inlay 122 are exposed to the outer shell 1 to form a first inner solder pad 1221 and a first outer solder pad, and the two ends of the second conductive inlay 132 are exposed to the outer shell 1 to form a second inner solder pad 1321 and a second outer solder pad. The first inner solder pad 1221 is electrically connected to the first vibration component 31, the second inner solder pad 1321 is electrically connected to the second vibration component 32, and the first outer solder pad and the second outer solder pad are both electrically connected to the external circuit.

[0152] In one embodiment, one of the first external pads is electrically connected to a second external pad via an electrical connector 5 and to an external circuit. Specifically, one of the second external pads forms a common external pad 14, through which the external circuit is electrically connected to both the first voice coil 312 and the second voice coil 323. Optionally, the first conductive insert 122 is disposed in the first housing 12, and the second conductive insert 132 is disposed in the second housing 13. This design reduces process and material costs and facilitates mass production.

[0153] In other embodiments, a first conductive insert 122 is close to a second conductive insert 132 , and the first external solder pad and the second external solder pad are integrally formed to form a common external solder pad 14 , and the external circuit is electrically connected to the first voice coil 312 and the second voice coil 323 at the same time through the common external solder pad 14 .

[0154] Optionally, the first conductive insert 122 and the second conductive insert 132, which are adjacent to each other, are disposed in the connection region 3221 of the first shell 12 and the second shell 13. This design cleverly utilizes the outer structure of the housing 1, reduces the number of conductive inserts and the injection molding process, reduces the size of the external electrical connector 5 (flexible circuit board), and further reduces production costs.

[0155] The present invention further provides an electronic device comprising a device housing and the aforementioned sound-generating device 100, with the sound-generating device 100 disposed within the device housing. The specific structure of the sound-generating device 100 is similar to that of the aforementioned embodiments. Since this electronic device utilizes all of the technical solutions of all of the aforementioned embodiments, it possesses at least all of the beneficial effects provided by the technical solutions of the aforementioned embodiments, and therefore will not be further elaborated upon here.

[0156] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-generating device, characterized in that: The sound-generating device comprises a vibration system and a magnetic circuit system, wherein: The magnetic circuit system has a first magnetic gap and a second magnetic gap; and A vibration system, the vibration system comprising a first vibration component and a second vibration component both opposite to the magnetic circuit system, the vibration direction of the first vibration component and the vibration direction of the second vibration component being arranged at an angle, the first vibration component comprising a first diaphragm and a first voice coil, the second vibration component comprising a second diaphragm and a second voice coil, and the second voice coil being a flat voice coil; The magnetic circuit system comprises: a basin frame, and a first magnetic circuit part and a second magnetic circuit part arranged on the basin frame; The first magnetic circuit portion is opposite to and spaced from the first vibration component, the first magnetic circuit portion is provided with a first magnetic gap, and one end of the first voice coil is suspended in the first magnetic gap; The second magnetic circuit portion is opposite to and spaced from the second vibration component. The second magnetic circuit portion is located on a side of the first magnetic circuit portion that is away from the first vibration component, and cooperates with the first magnetic circuit portion to form a second magnetic gap. The second voice coil is disposed in the second magnetic gap.

2. The sound generating device according to claim 1, characterized in that: The sound-generating device comprises a housing, the housing comprises a first shell and a second shell arranged at an angle, the first shell and the second shell enclose a mounting cavity, the magnetic circuit system is arranged in the mounting cavity; the first vibration component is connected to the first shell, the second vibration component is connected to the second shell, wherein, The vibration direction of the first vibration component is arranged perpendicular to the vibration direction of the second vibration component; And / or, the first shell and the second shell are arranged vertically; The first diaphragm is connected to the first shell, and the second diaphragm is connected to the second shell.

3. The sound generating device according to claim 1, characterized in that: The first magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion, wherein the side magnetic circuit portion is arranged outside the central magnetic circuit portion and is spaced apart from the central magnetic circuit portion to form the first magnetic gap; The second magnetic circuit portion is located at a side of the side magnetic circuit portion facing away from the first vibration component, and cooperates with the first magnetic circuit portion to form the second magnetic gap.

4. The sound-generating device according to claim 3, characterized in that: The central magnetic circuit portion includes a central magnetic circuit, the side magnetic circuit portion includes a side magnetic circuit and a second common magnetic circuit, the side magnetic circuit is located outside the central magnetic circuit and is spaced to form a first sub-gap, the second common magnetic circuit is located outside the central magnetic circuit and is spaced to form a second sub-gap, the first sub-gap is connected to the second sub-gap to form the first magnetic gap; The second magnetic circuit portion includes a third magnet, and the third magnet is opposite to the second common magnetic circuit and forms the second magnetic gap therebetween.

5. The sound generating device according to claim 4, characterized in that: The second common magnetic circuit includes a second common magnet, and the third magnet is spaced apart from the second common magnet to form the second magnetic gap; Alternatively, the second common magnetic circuit includes a second common magnet, the second common magnet includes a main body and an extension portion extending from one end of the main body close to the second sub-gap, the extension portion abuts against the third magnet or the basin frame, and the second magnetic gap is formed between the main body and the third magnet; Alternatively, the second common magnetic circuit includes a second common magnet, the third magnet includes a second main body and a second extension portion bent and extended from one end of the second main body close to the second sub-gap, the second extension portion abuts against the second common magnet, and the second magnetic gap is formed between the second main body and the second common magnet; Alternatively, the second common magnetic circuit includes a second common magnetic conductive plate, the third magnet is opposite to and spaced from the second common magnetic conductive plate, and the second magnetic gap is formed between the third magnet and the second common magnetic conductive plate.

6. The sound generating device according to claim 2, characterized in that: The basin frame includes a first section, a second section and a third section connected in sequence. The first section and the third section are respectively arranged at an angle with the second section and are located on opposite sides of the second section; part of the first magnetic circuit is arranged in the first section, and part of the second magnetic circuit is arranged in the third section.

7. The sound generating device according to claim 6, characterized in that: The basin frame is provided with an air leakage hole, the air leakage hole is connected to the first magnetic gap and / or the second magnetic gap, and the sound-generating device further comprises an isolation net arranged corresponding to the air leakage hole; And / or, the first section and the third section are parallel to the first shell.

8. The sound generating device according to claim 2, characterized in that: The first diaphragm is provided with a conductive layer, the lead of the first voice coil is electrically connected to the conductive layer, a first conductive insert is provided in the housing, the first conductive insert is used to be electrically connected to an external circuit, and one end of the conductive layer away from the first voice coil is electrically connected to the first conductive insert; And / or, the first vibration assembly further comprises a first centering support, one end of the first centering support is connected to the housing, and the other end of the first centering support is connected to an end of the first voice coil away from the first diaphragm; And / or, the first vibration component further includes a first dome, and the first dome is connected to a side of the first diaphragm facing away from the first voice coil; And / or, the first voice coil is a ring-shaped voice coil.

9. The sound generating device according to any one of claims 1 to 8, characterized in that: The second voice coil includes two long axis sides and two short axis sides connected end to end, each of the short axis sides is arranged between the two long axis sides, one of the long axis sides is connected to the second diaphragm, and the other long axis side is arranged in the second magnetic gap.

10. The sound generating device according to claim 9, characterized in that: The second diaphragm protrudes toward a side away from the magnetic circuit system or toward a side close to the magnetic circuit system.

11. The sound generating device according to any one of claims 1 to 10, characterized in that: The first vibration component is used for producing bass sounds, and the second vibration component is used for producing treble sounds.

12. An electronic device, characterized in that: The device comprises a device housing and a sound-generating device as claimed in any one of claims 1 to 11, wherein the sound-generating device is arranged in the device housing.

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