Sound production device and electronic equipment

Abstract

The invention provides a sound production device and electronic equipment, the sound production device comprises a first sound production unit and a second sound production unit, the first sound production unit comprises a first magnetic circuit assembly and a first vibration assembly, the first vibration assembly comprises a first vibrating diaphragm and a first voice coil, and the first voice coil is located in a magnetic field of the first magnetic circuit assembly; the second sound production unit comprises a second magnetic circuit assembly and a second vibration assembly, the second vibration assembly comprises a second vibrating diaphragm and a second voice coil, and the second voice coil is located in the magnetic field of the second magnetic circuit assembly; the first vibrating diaphragm comprises a first folding ring and a first reinforcing part connected to the middle of the first folding ring, the first reinforcing part is recessed inwards towards the first magnetic circuit assembly to form a recessed part, the second magnetic circuit assembly is fixed in the recessed part, and the second vibrating assembly covers the recessed part. According to the invention, the problems of low sensitivity, poor overall acoustic performance and poor sound effect of the existing sound production device due to the limitation of the spatial size can be solved.

Description

Technical Field

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

[0002] In recent years, convenient electronic devices (such as mobile phones, headphones, and computers) have become part of people's daily lives. With the rapid development of technology, people's demand for the sound quality of electronic devices has become higher and higher, and full-range and miniaturized speakers have become mainstream demands.

[0003] At present, the box space in electronic devices is getting smaller and smaller. Due to the limitation of space size, the sensitivity of the sound-emitting device is low, and the overall acoustic performance and sound effect are poor. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a sound-emitting device and an electronic device, aiming to improve the treble sensitivity so as to solve the problem that the existing sound-emitting devices have low sensitivity, poor overall acoustic performance and sound effects due to space size limitations.

[0005] The present invention provides a sound-generating device, comprising: a first sound-generating unit and a second sound-generating unit,

[0006] The first sound-emitting unit includes a first magnetic circuit component and a first vibration component, the first vibration component includes a first diaphragm and a first voice coil connected to the first diaphragm, and the first voice coil is in the magnetic field of the first magnetic circuit component;

[0007] The second sound-emitting unit includes a second magnetic circuit component and a second vibration component, the second vibration component includes a second diaphragm and a second voice coil connected to the second diaphragm, and the second voice coil is in the magnetic field of the second magnetic circuit component;

[0008] The first diaphragm includes a first fold ring and a first reinforcement portion connected to the middle of the first fold ring, the first reinforcement portion is recessed inward toward the first magnetic circuit component to form a recessed portion, the second magnetic circuit component is fixed in the recessed portion, and the second vibration component covers the recessed portion.

[0009] In addition, a preferred solution is that the area of ​​the second diaphragm is greater than or equal to the area of ​​the recessed portion;

[0010] The periphery of the second diaphragm is bonded and fixed to the first reinforcing part by means of adhesive coating or adhesive backing.

[0011] In addition, a preferred solution is that the second diaphragm is a planar diaphragm;

[0012] Alternatively, the second diaphragm includes a second fold ring and a second reinforcement portion connected to the middle of the second fold ring, and the second voice coil is connected to the second reinforcement portion.

[0013] In addition, a preferred solution is that the second voice coil is flat, the second magnetic circuit assembly includes at least three pieces, the magnetization direction is parallel to the vibration direction, and the magnetization directions of adjacent magnets are opposite.

[0014] In addition, a preferred solution is that the first reinforcing portion is made of metal, the first folded reinforcing portion includes a planar portion and the recessed portion, and the recessed portion and the planar portion are an integrally formed structure.

[0015] In addition, a preferred solution is that the planar portion and the recessed portion are designed to be separated, a hollow is provided in the middle portion of the planar portion, and the recessed portion is provided to cover the hollow.

[0016] In addition, a preferred solution is that the first vibration component further includes a centering support plate, wherein:

[0017] One end of the centering support is connected to the housing, and the other end of the centering support is connected to the first voice coil.

[0018] In addition, a preferred solution is that the second diaphragm includes a conductive diaphragm, and the conductive diaphragm is fixed to and electrically connected to the second voice coil, wherein:

[0019] The conductive diaphragm is fixedly and electrically connected to the first reinforcement part through conductive adhesive, and leads connected to an external circuit are arranged at the corners of the first reinforcement part.

[0020] In addition, a preferred solution is that the first magnetic circuit assembly includes a magnetic yoke, a central magnetic circuit and a side magnetic circuit arranged on the magnetic yoke, the central magnetic circuit and the side magnetic circuit are located on the same side of the magnetic yoke, the side magnetic circuit is located outside the central magnetic circuit, and forms a magnetic gap with the central magnetic circuit;

[0021] One end of the first voice coil is connected to the first reinforcement portion, and the other end of the first voice coil is suspended in the magnetic gap.

[0022] In addition, a preferred solution is that the central magnetic circuit includes a central magnet and a central magnetic conductive plate arranged in a stacked manner, and the side magnetic circuit includes a side magnet and a side magnetic conductive plate arranged in a stacked manner, wherein:

[0023] The central magnet and the side magnets are both fixed on the magnetic yoke, and the side magnetic plate is arranged on the shell.

[0024] The present invention also provides an electronic device, comprising the above-mentioned sound-generating device.

[0025] It can be seen from the above technical solutions that the sound-emitting device and electronic device provided by the present invention improve the sensitivity of the treble by arranging the second sound-emitting unit in the recessed area of ​​the reinforcement part of the first sound-emitting unit, and the second sound-emitting unit adopts a structure combining a planar voice coil and a magnetic circuit, thereby solving the problem of poor sound quality caused by insufficient space of the whole machine, and thus greatly improving the performance of the whole machine and the loudness of the sound effect.

[0026] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0028] Figure 1 is an exploded view of a sound-generating device according to an embodiment of the present invention;

[0029] Figure 2 is a schematic cross-sectional structural diagram of a sound-generating device according to an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of magnetization of a sound-generating device according to an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the magnetic circuit structure of the second sound-generating unit of the sound-generating device according to an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the structure of a centering support piece according to an embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the magnetic circuit structure of the first sound-generating unit of the sound-generating device according to an embodiment of the present invention.

[0034] Reference numerals include:

[0035] 1. a second sound unit, 11. a second diaphragm, 12. a second voice coil, 13. a second magnetic circuit assembly, 131. a first magnet, 132. a second magnet, 133. a third magnet;

[0036] 2. a first reinforcement portion, 21. a recessed portion, 22. a planar portion;

[0037] 3. first fold ring; 4. first voice coil; 51. center magnetic plate; 52. side magnetic plate;

[0038] 6. Centering support piece, 61. First connecting portion, 62. Elastic arm, 63. Second connecting portion;

[0039] 7. housing, 8. first magnet assembly, 81. center magnet, 82. side magnet;

[0040] 9. Magnetic yoke. 10. Magnetic gap.

[0041] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0042] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0043] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In order to solve the aforementioned problem that the existing sound-generating devices have low sensitivity, poor overall acoustic performance and sound effects due to space size limitations, the present invention proposes a sound-generating device and an electronic device.

[0045] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] In order to illustrate the structure of the sound generating device provided by the present invention, Figures 1 to 6 The structure of the sound-generating device is exemplarily indicated from different angles. Specifically, Figure 1 The explosion structure of the sound generating device according to an embodiment of the present invention is shown; Figure 2 The cross-sectional structure of the sound generating device according to the embodiment of the present invention is shown; Figure 3 The magnetization structure of the sound-generating device according to an embodiment of the present invention is shown; Figure 4 The magnetic circuit structure of the second sound-generating unit of the sound-generating device according to the embodiment of the present invention is shown; Figure 5The centering support structure according to an embodiment of the present invention is shown; Figure 6 The magnetic circuit structure of the first sound-generating unit of the sound-generating device according to an embodiment of the present invention is shown.

[0047] like Figures 1 to 6 As shown together, the sound-emitting device provided by the present invention includes: a first sound-emitting unit and a second sound-emitting unit 1, the first sound-emitting unit includes a first magnetic circuit component and a first vibration component, the first vibration component includes a first diaphragm and a first voice coil 4 connected to the first diaphragm, and the first voice coil 4 is in the magnetic field of the first magnetic circuit component; the second sound-emitting unit 2 includes a second magnetic circuit component 13 and a second vibration component, the second vibration component includes a second diaphragm 11 and a second voice coil 12 connected to the second diaphragm 11, and the second voice coil 12 is in the magnetic field of the second magnetic circuit component; the first diaphragm includes a first folding ring 3 and a first reinforcement part 2 connected to the middle of the first folding ring 3, the first reinforcement part 2 is recessed inwardly toward the first magnetic circuit component to form a recessed part 21, the second magnetic circuit component 13 is fixed in the recessed part 21, and the second vibration component covers the recessed part 21.

[0048] In an embodiment of the present invention, the first sound unit and the second sound unit are coaxially arranged, the second magnetic circuit assembly 13 includes at least three magnets, the magnetization direction of the magnets is parallel to the vibration direction, the three magnets are respectively the first magnet 131, the second magnet 132 and the third magnet 133, the first magnet 131 is sandwiched between the second magnet 132 and the third magnet 133, the second magnet 132 and the third magnet 133 are magnetized along the vibration direction and have the same magnetization direction, the magnetization direction of the first magnet 131 is opposite to the magnetization direction of the two adjacent magnets; wherein, the adjacent parts of the two adjacent magnets correspond to the two driving edges of the second voice coil respectively, and the two adjacent magnets may be directly opposite or not directly opposite along the vibration direction. The first magnet 131, the second magnet 132 and the third magnet 133 are fixed in the recessed portion 21 of the first reinforcement portion 2, and the second diaphragm 11 covers the recessed portion 21, and its periphery is fixed to the first reinforcement portion 2.

[0049] In an embodiment of the present invention, the sound-generating device may be a sound-generating unit of a loudspeaker, and the loudspeaker may be a miniature loudspeaker. It should be noted that the magnetic circuit component and the vibration component of the sound-generating device are arranged relative to each other. Optionally, the magnetic circuit component is arranged in a square shape. For example, the magnetic circuit component may include a central magnetic circuit and a side magnetic circuit, both of which are square structures. The vibration component is also arranged in a square shape. It is understandable that the edge of the diaphragm of the vibration component may be connected to the magnetic circuit component, or the magnetic circuit component and the vibration component may be separately assembled on the module housing, etc., which is not limited here.

[0050] In order to better assemble the magnetic circuit system and vibration system of the sound device, Figures 1 to 6In the illustrated embodiment, the sound-generating device further includes a housing 7, a first magnetic circuit component is connected to one end of the housing 7, and a first vibration component is connected to the other end of the housing 7 and is arranged opposite to the first magnetic circuit component. In this embodiment, the housing 7 is used to install, fix and support components such as the magnetic circuit component and the vibration component, that is, the housing 7 provides an installation base for components such as the magnetic circuit component and the vibration system. It can be understood that the housing 7 can be an integral structure or can be formed by the cooperation of multiple split structures, which is not limited here.

[0051] Among them, the sound-generating device is applied to electronic equipment, that is, the sound-generating device can be installed in the electronic equipment through a metal shell. It should be noted that the shell 7 of the sound-generating device can be a shell or box structure independent of the electronic equipment. In this case, the shell 7 is used to integrate the magnetic circuit component and the vibration component of the sound-generating device into an integral structure, so as to facilitate disassembly and assembly. Of course, the shell 7 of the sound-generating device can also be an integrally formed structure with the shell or box structure of the electronic equipment, which can effectively improve the structural strength and sealing performance.

[0052] In this embodiment, the housing 7 is used to accommodate and fix the first sound unit and the second sound unit and other structures, so that the sound device can be used as an independent component in an electronic device or a sound module, which is not limited here. Of course, in other embodiments, the sound device can also be a module structure, in which case the vibration components and magnetic circuit components of the sound unit are installed on the housing 7 of the module structure as multiple independent components, which is not limited here.

[0053] It can be understood that by arranging the second sound unit 1 on the first sound unit, the magnetic circuit assembly of the first sound can be connected to the housing through the periphery of the magnetic yoke; or, the magnetic circuit assembly of the first sound unit can be connected to the housing through the side magnetic circuit, which is not limited here. In this embodiment, the side magnetic circuit is located outside the central magnetic circuit and is enclosed with the central magnetic circuit to form a magnetic gap 10, so that the folding ring part of the vibration component is connected to the end of the housing away from the magnetic yoke, and is opposite to and spaced from the magnetic circuit assembly, so that one end of the first voice coil is connected to the first reinforcement part, and the other end of the first voice coil is suspended in the magnetic gap 10.

[0054] In order to realize the combination of the first sound unit and the second sound unit. In an embodiment of the present invention, Figures 1 to 6As shown, the second sound unit 1 is arranged on the first reinforcement part 2 of the first sound unit, and vibrates together with the first reinforcement part 2. A recessed area 21 is arranged in the middle of the first reinforcement part 2. The second sound unit 1 includes a second diaphragm 11, a flat second voice coil 12 and a second magnetic circuit assembly 13. The second voice coil 12 is arranged on the second diaphragm 11 and is located above the second magnetic circuit assembly 13. The second magnetic circuit assembly 13 is fixed in the recessed part 21. In addition, the adjacent parts of the two adjacent magnets correspond to the two driving edges of the second voice coil respectively, and the two adjacent magnets may be facing each other or not facing each other along the vibration direction. The second sound unit adopts a design combining a planar voice coil and a magnetic circuit assembly, which can improve the treble sensitivity, solve the problem of poor sound quality caused by insufficient space of the whole machine, and thus greatly improve the performance of the whole machine and the sound loudness.

[0055] In an embodiment of the present invention, the area of ​​the second diaphragm 11 is ≥ the area of ​​the recessed portion 21; only when the above conditions are met, the second diaphragm 11 can be fixed on the first reinforcement portion 2, otherwise, the entire second sound unit 1 sinks into the recessed portion 21. In order to prevent the entire second sound unit 1 from sinking into the recessed portion 21, the above conditions must be met. The periphery of the second diaphragm 11 is bonded and fixed to the second diaphragm 2 by means of glue coating or back glue. In addition, the second voice coil 12 is glued to the second diaphragm 11, and the second voice coil 12 vibrates with the second diaphragm 11.

[0056] In an embodiment of the present invention, the second diaphragm 11 is a planar diaphragm; or, the second diaphragm 11 includes a second folding ring and a second reinforcement portion connected to the middle of the second folding ring, and the second voice coil 12 is connected to the second reinforcement portion. The second voice coil 12 is flat, and the second magnetic circuit assembly 13 includes at least three magnets, the magnetization direction is parallel to the vibration direction, and the magnetization directions of adjacent magnets are opposite. Specifically, the second magnetic circuit assembly 13 includes a first magnet 131, a second magnet 132 and a third magnet 133, the first magnet 131 is sandwiched between the second magnet 132 and the third magnet 133, the second magnet 132 and the third magnet 133 are magnetized along the vibration direction and have the same magnetization direction, the magnetization direction of the first magnet 131 is opposite to that of the two adjacent magnets, wherein the adjacent parts of the two adjacent magnets correspond to the two driving edges of the second voice coil respectively, and the two adjacent magnets may be directly opposite or not directly opposite along the vibration direction. The second magnetic circuit assembly has a magnetic field with a higher magnetic field strength, thereby increasing the density of the magnetic flux. Since the second voice coil 12 is located above the second magnetic circuit assembly, and the second voice coil 12 is located above the second magnet 132 and the third magnet 133, this position structure can increase the number of magnetic lines of force passing through the second voice coil 12, increase the magnetic field force exerted on the second voice coil 12, effectively improve the BL value, and improve the treble sensitivity of the sound-emitting device, so that the sound effect and performance of the whole machine are better improved.

[0057] Optionally, in this embodiment, the vibration direction can be selected as the vertical direction, and the first magnet 131, the second magnet 132 and the third magnet 133 of the second magnetic circuit assembly 13 are all magnetized in the vertical direction. It can be understood that the magnetization direction of the second magnet 132 and the third magnet 133 is the same, and the magnetization direction of the first magnet 13 is opposite to the magnetization direction of the second magnet 132 and the third magnet 133. It should be noted that Figure 3 The direction of the arrow in the second magnetic circuit component indicates the magnetization direction.

[0058] It can be understood that the second magnetic circuit component is capable of generating a relatively strong magnetic field. Through the magnetic field generated by the second magnetic circuit component, the second voice coil 12 drives the second diaphragm 11 to vibrate and make sound, so that the second voice coil 12 has a relatively strong magnetic field, which is beneficial to improving the sensitivity of controlling the vibration of the diaphragm; and, the second magnetic circuit component allows the magnetic flux lines at the second voice coil 12 to be evenly distributed and the magnetic field changes in the vibration direction of the second diaphragm 11 have good linearity, which can effectively improve the sound quality of the audio output by the sound-emitting device, enhance the treble effect, and alleviate the distortion of the audio output by the sound-emitting device to a certain extent.

[0059] In an embodiment of the present invention, the second diaphragm 11 includes a conductive diaphragm, and the conductive diaphragm is fixed and electrically connected to the second voice coil 12, wherein the conductive diaphragm is fixed and electrically connected to the first reinforcement part 2 through a conductive adhesive, and a lead connected to an external circuit is provided at a corner of the first reinforcement part 2. In other words, the second voice coil 12 is electrically connected to the first reinforcement part through the conductive diaphragm and the conductive adhesive in the second diaphragm, and a lead connected to an external circuit is provided at a corner of the first reinforcement part, thereby realizing electrical connection between the second voice coil 12 and the external circuit.

[0060] In an embodiment of the present invention, the first reinforcing portion 2 includes the recessed portion 21 and the flat portion 22, wherein the recessed portion 21 is symmetrically arranged about the central axis of the monomer. The first reinforcing portion 2 is made of metal, and the recessed portion 21 and the flat portion 22 are an integrally formed structure. Alternatively, the flat portion 22 and the recessed portion 21 are split designs, and a hollow is arranged in the middle part of the flat portion 22, and the recessed portion 21 is covered and arranged at the hollow. In specific applications, according to actual conditions, a suitable design method of the first reinforcing portion 2 is selected, and it is not limited to a specific design structure.

[0061] In an embodiment of the present invention, the first vibration assembly further includes a first voice coil 4 and a centering support 6, wherein one end of the centering support 6 is connected to the housing 7, and the other end of the centering support 6 is connected to the first voice coil and electrically connected to the lead of the first voice coil 4. The centering support 6 includes a first connecting portion 61, a second connecting portion 63, and an elastic arm 62 for connecting the first connecting portion 61 and the second connecting portion 63, wherein the first connecting portion 61 is connected to the first voice coil, and the second connecting portion 63 is connected to the housing 7.

[0062] Among them, the first magnetic circuit component includes a magnetic yoke 9, a central magnetic circuit and a side magnetic circuit arranged on the magnetic yoke 9, the central magnetic circuit and the side magnetic circuit are located on the same side of the magnetic yoke 9, the side magnetic circuit is located on the outside of the central magnetic circuit, and is surrounded by the central magnetic circuit to form a magnetic gap 10; one end of the first voice coil 4 is connected to the first reinforcement part 2, and the other end of the first voice coil 4 is suspended in the magnetic gap 10.

[0063] Among them, the central magnetic circuit includes a stacked central magnet 81 and a central magnetic conductive plate 51, and the side magnetic circuit includes a stacked side magnet 82 and a side magnetic conductive plate 52, wherein the central magnet 81 and the side magnet 82 (the central magnet 81 and the four side magnets 82 arranged around the central magnet 81 constitute the first magnet assembly 8) are all fixed on the magnetic conductive yoke 9, and the side magnetic conductive plate 52 is arranged on the outer shell 7.

[0064] Optionally, an avoidance recess is provided on a side of the central magnetic conductive plate 51 away from the central magnet 81 to avoid contact with the recessed portion 21 of the first reinforcing portion 2 .

[0065] Optionally, the side magnetic circuit is arranged in an annular shape, the annular side magnetic circuit is located outside the central magnetic circuit, and is spaced apart from the central magnetic circuit to form a magnetic gap 10. Optionally, the side magnets and / or the side magnetic conductive plates form a closed integral annular structure.

[0066] The present invention also provides an electronic device, which includes the above-mentioned sound-generating device. The specific structure of the sound-generating device refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0067] In this embodiment, the electronic device is connected to the sound device via a flexible circuit board, one end of the flexible circuit board is electrically connected to the sound device, and the other end of the flexible circuit board is used to connect to an external power source. It can be understood that the flexible circuit board is used to connect the external circuit to the sound device.

[0068] In this embodiment, the electronic device may be a headset, a mobile phone, a laptop, a tablet computer, a smart wearable device, etc., which is not limited here. In the electronic device, the sound device may be assembled into the housing of the electronic device in the form of a module or in the form of a single body.

[0069] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-generating device, comprising: The first sound unit and the second sound unit are characterized in that The first sound-emitting unit includes a first magnetic circuit component and a first vibration component, the first vibration component includes a first diaphragm and a first voice coil connected to the first diaphragm, and the first voice coil is in the magnetic field of the first magnetic circuit component; The second sound-emitting unit includes a second magnetic circuit component and a second vibration component, the second vibration component includes a second diaphragm and a second voice coil connected to the second diaphragm, and the second voice coil is in the magnetic field of the second magnetic circuit component; The first diaphragm includes a first fold ring and a first reinforcement portion connected to the middle of the first fold ring, the first reinforcement portion is recessed inward toward the first magnetic circuit component to form a recessed portion, the second magnetic circuit component is fixed in the recessed portion, and the second vibration component covers the recessed portion.

2. The sound generating device according to claim 1, characterized in that: The area of ​​the second diaphragm is greater than or equal to the area of ​​the recessed portion; The periphery of the second diaphragm is bonded and fixed to the first reinforcing part by means of adhesive coating or adhesive backing.

3. The sound generating device according to claim 1, characterized in that: The second diaphragm is a planar diaphragm; Alternatively, the second diaphragm includes a second fold ring and a second reinforcement portion connected to the middle of the second fold ring, and the second voice coil is connected to the second reinforcement portion.

4. The sound generating device according to claim 1, characterized in that: The second voice coil is flat, the second magnetic circuit assembly includes at least three pieces, the magnetization direction is parallel to the vibration direction, and the magnetization directions of adjacent magnets are opposite.

5. The sound generating device according to claim 1, characterized in that: The first reinforcing portion is made of metal, and the first folded reinforcing portion includes a planar portion and the recessed portion, and the recessed portion and the planar portion are an integrally formed structure.

6. The sound generating device according to claim 5, characterized in that: The planar portion and the recessed portion are designed to be separated, a hollow is provided in the middle of the planar portion, and the recessed portion is provided to cover the hollow.

7. The sound generating device according to claim 1, characterized in that: The first vibration assembly further includes a centering support plate, wherein: One end of the centering support is connected to the housing, and the other end of the centering support is connected to the first voice coil.

8. The sound generating device according to claim 7, characterized in that: The second diaphragm includes a conductive diaphragm, and the conductive diaphragm is fixed to and electrically connected to the second voice coil, wherein: The conductive diaphragm is fixed and electrically connected to the first reinforcement part through conductive adhesive, and leads connected to an external circuit are arranged at the corners of the first reinforcement part.

9. The sound generating device according to claim 7, characterized in that: The first magnetic circuit assembly includes a magnetic yoke, a central magnetic circuit and a side magnetic circuit arranged on the magnetic yoke, wherein the central magnetic circuit and the side magnetic circuit are located on the same side of the magnetic yoke, and the side magnetic circuit is located outside the central magnetic circuit and encloses the central magnetic circuit to form a magnetic gap; One end of the first voice coil is connected to the first reinforcement portion, and the other end of the first voice coil is suspended in the magnetic gap.

10. The sound generating device according to claim 9, characterized in that: The central magnetic circuit includes a stacked central magnet and a central magnetic conductive plate, and the side magnetic circuit includes a stacked side magnet and a side magnetic conductive plate, wherein: The central magnet and the side magnets are both fixed on the magnetic yoke, and the side magnetic plate is arranged on the shell.

11. An electronic device, characterized in that: The device comprises a sound emitting device as claimed in any one of claims 1 to 10.

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