Sound production device and electronic device

Abstract

The application discloses a sound production device and electronic equipment, the sound production device comprises a shell, a magnetic circuit system and a vibration system, the shell comprises a first shell and a second shell arranged at an included angle, the first shell and the second shell enclose a mounting cavity, the magnetic circuit system is arranged in the mounting cavity, the vibration system comprises a first vibration assembly and a second vibration assembly, the first vibration assembly is connected with the first shell and opposite to the magnetic circuit system, the second vibration assembly is connected with the second shell and opposite to the magnetic circuit system, and the vibration direction of the first vibration assembly and the vibration direction of the second vibration assembly are arranged at an included angle. The application aims to provide a sound production device with vibration radiation surfaces arranged at an included angle and independent of each other, which not only realizes multifunctional application, but also effectively improves sound production effect and reduces manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic conversion technology, and in particular to a sound-generating device and an electronic device using the sound-generating device. Background Technology

[0002] With the development of the portable consumer electronics market, miniature sound-generating devices have been widely used. Furthermore, the increasing multifunctionality and miniaturization of portable electronic devices have placed higher demands on the vibroacoustic performance of these miniature sound generators. Currently, the effective bandwidth of miniature speaker modules in smart mobile terminals is relatively narrow, resulting in a monotonous tone, poor sound quality, and an inability to meet diverse functional requirements. Summary of the Invention

[0003] The main objective of this invention is to provide a sound-generating device and an electronic device, which aims to provide a sound-generating device with independent vibration radiation surfaces arranged at an angle. This sound-generating device not only achieves multi-functional applications but also effectively improves the sound generation effect and reduces manufacturing costs.

[0004] To achieve the above objectives, the present invention provides a sound-generating device, the sound-generating device comprising:

[0005] The housing includes a first housing and a second housing arranged at an angle, the first housing and the second housing enclosing a mounting cavity and having a common side;

[0006] A magnetic circuit system, wherein the magnetic circuit system is disposed within the mounting cavity, the magnetic circuit system having a first magnetic gap and a second magnetic gap; and,

[0007] A vibration system includes a first vibration component and a second vibration component. The first vibration component is connected to a first housing and faces the magnetic circuit system. The second vibration component is connected to a second housing and faces the magnetic circuit system. The vibration directions of the first and second vibration components form an angle with each other.

[0008] The first vibration component includes a first diaphragm and a first voice coil, one end of the first voice coil is connected to the first diaphragm, and the other end of the first voice coil is suspended in the first magnetic gap;

[0009] The second vibrating component includes a second diaphragm and a second voice coil. The second diaphragm is disposed in the second housing, and the second voice coil is a flat voice coil.

[0010] The first vibration component is defined to vibrate along a first direction. The second housing includes a common side and a first side distributed along the first direction. Along the first direction, the outer edge of the common side has a first extension that extends beyond the magnetic circuit system and is used to mount the first diaphragm. The outer edge of the first side is flush with the magnetic circuit system. The second vibration component is defined to vibrate along a second direction. The side of the common side that is opposite to the first side extends along the second direction and is provided with a second extension for mounting the second diaphragm.

[0011] The second diaphragm has a connection area that connects to the second voice coil, the connection area being offset from the center of the second diaphragm along a first direction and located on a side away from the center of the first vibrating component.

[0012] In one embodiment, the second diaphragm includes a second dome located at the center of the second diaphragm, the second voice coil is connected to the second dome, and the second dome has the connection area.

[0013] In one embodiment, the magnetic circuit system includes:

[0014] Sink stand;

[0015] A first magnetic circuit portion is disposed on the frame and is opposite to and spaced from the first vibration assembly. The first magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion. The side magnetic circuit portion is disposed outside the central magnetic circuit portion and is spaced from the central magnetic circuit portion to form the first magnetic gap.

[0016] The second magnetic circuit portion is disposed on the frame, 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 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. The side magnetic circuit is located outside the central magnetic circuit and forms a first sub-gap at intervals. The second common magnetic circuit is located outside the central magnetic circuit and forms a second sub-gap at intervals. The first sub-gap and the second sub-gap are connected 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 between them.

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

[0020] Alternatively, the second common magnetic circuit includes a second common magnet, which includes a main body and an extension that extends from one end of the main body near the second sub-gap, the extension abutting against the second magnet or the basin stand, and the second magnetic gap being formed between the main body and the third magnet;

[0021] Alternatively, the second common magnetic circuit includes a second common magnetic guide plate, the second magnetic circuit portion being opposite to and spaced from the second common magnetic guide plate, and the third magnet forming the second magnetic gap with the second common magnetic guide plate.

[0022] In one embodiment, the basin stand 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. A portion of the first magnetic circuit is disposed in the first section, and a portion of the second magnetic circuit is disposed in the third section.

[0023] In one embodiment, the basin stand is provided with a vent hole, the vent hole is connected to the first magnetic gap and / or the second magnetic gap, and the sound generating device further includes a breathable isolation mesh corresponding to the vent hole;

[0024] And / or, the first segment and the third segment are parallel to the first housing.

[0025] 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 being disposed between the two long axis sides, wherein one of the long axis sides is connected to the connection area, and the other long axis side is disposed within the second magnetic gap.

[0026] In one embodiment, the first vibration component is used for low-frequency sound generation, and the second vibration component is used for high-frequency sound generation;

[0027] And / or, the vibration direction of the first vibration component is perpendicular to the vibration direction of the second vibration component.

[0028] The present invention also proposes an electronic device, including a device housing and the aforementioned sound-generating device, wherein the sound-generating device is disposed in the device housing.

[0029] The sound-generating device of this invention comprises a first vibration component and a second vibration component in a vibration system, such 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 provides both a magnetic field and a driving force to the first and second vibration components simultaneously, thereby improving the magnetic field utilization rate while reducing cost and size. Furthermore, the vibration directions of the first and second vibration components are set at an angle, which allows the vibration system to form two independent vibration radiation surfaces set at an angle. This not only achieves multi-functional applications but also effectively improves the sound generation effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a sound-generating device in one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the sound-generating device from another perspective in one embodiment of the present invention;

[0033] Figure 3 This is an exploded view of a sound-generating device in one embodiment of the present invention;

[0034] Figure 4 This is a further exploded view of the sound-generating device in one embodiment of the present invention;

[0035] Figure 5 This is a cross-sectional schematic diagram of a sound-generating device in one embodiment of the present invention;

[0036] Figure 6 This is a cross-sectional schematic diagram of a sound-generating device in one embodiment of the present invention;

[0037] Figure 7 This is a cross-sectional schematic diagram of a sound-generating device in one embodiment of the present invention;

[0038] Figure 8 This is a cross-sectional schematic diagram of a sound-generating device in one embodiment of the present invention;

[0039] Figure 9 This is a cross-sectional schematic diagram of a sound-generating device in one embodiment of the present invention;

[0040] Figure 10 This is an exploded view of the outer casing in one embodiment of the present invention;

[0041] Figure 11 This is a plan view of the outer casing in one embodiment of the present invention;

[0042] Figure 12 This is a planar schematic diagram of the second voice coil in one embodiment of the present invention;

[0043] Figure 13 This is a schematic diagram showing the separation of the sound-generating device and the sound-conducting pipe in one embodiment of the present invention;

[0044] Figure 14 This is a cross-sectional view of the combination of the sound-generating device and the electronic device in one embodiment of the present invention;

[0045] Figure 15 This is a cross-sectional view of the combination of the sound-generating device and the electronic device in one embodiment of the present invention;

[0046] Figure 16 This is a cross-sectional schematic diagram of a sound-generating device in one embodiment of the present invention.

[0047] Explanation of icon numbers:

[0048]

[0049]

[0050] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0053] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0054] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0055] With the development of the portable consumer electronics market, miniature sound-generating devices have been widely used. Furthermore, the increasing multifunctionality and miniaturization of portable electronic devices have placed higher demands on the vibroacoustic performance of these miniature sound generators. Currently, the effective bandwidth of miniature speaker modules in smart mobile terminals is relatively narrow, resulting in a monotonous tone, poor sound quality, and an inability to meet diverse functional requirements.

[0056] Based on the above-mentioned concepts and problems, the present invention proposes a sound-generating device 100. It is understood that the sound-generating device 100 is applied to electronic devices, such as mobile phones, speakers, computers, headphones, watches, or televisions, etc., and is not limited thereto.

[0057] Please refer to the reference. Figures 1 to 16 As shown, in this embodiment of the 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 and the vibration direction of the second vibration component 32 are set at an angle.

[0058] The sound-generating device 100 of the present invention provides a first vibration component 31 and a second vibration component 32 in a vibration system 3, such 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 provides both a magnetic field and a driving force to the first vibration component 31 and the second vibration component 32, thereby improving the magnetic field utilization rate and reducing costs. Furthermore, the vibration direction of the first vibration component 31 and the vibration direction of the second vibration component 32 are set at an angle, so that the vibration system 3 can form two independent vibration radiation surfaces set at an angle, which not only realizes a multi-functional application, but also effectively improves the sound generation effect.

[0059] 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. A first vibration component 31 is connected to the first mounting surface 123, and a second vibration component 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 support portion for supporting and fixing the first vibration component 31 and the second vibration component 32.

[0060] Optionally, such as Figures 3 to 9 , Figure 16 As shown, the outer casing 1 includes a first casing 12 and a second casing 13 arranged at an angle, forming a mounting cavity. A magnetic circuit system 2 is disposed within the mounting cavity. The first casing 12 has a first mounting surface 123, and the second casing 13 has a second mounting surface 135. A first vibration component 31 is connected to the first mounting surface 123 of the first casing 12 and faces the magnetic circuit system 2. A second vibration component 32 is connected to the second mounting surface 135 of the second casing 13 and faces the magnetic circuit system 2. The vibration direction of the first vibration component 31 and the vibration direction of the second vibration component 32 are arranged at an angle. Optionally, the first casing 12 and the second casing 13 are integrally formed, thus improving the structural strength and stability of the outer casing 1. It is understood that the mounting cavity formed by the first casing 12 and the second casing 13 can be a through cavity or a through groove structure. Optionally, the first casing 12 and the second casing 13 are arranged perpendicularly.

[0061] In this embodiment, the first housing 12 has a rectangular structure, with two opposite long sides and two short sides. The two ends of the short sides are connected to the two long sides, and the two ends of the long sides are connected to the two short sides. It is understood that the second housing 13 is connected to either a long side or a short side of the first housing 12, such that the second housing 13 is perpendicular to the first housing 12.

[0062] Understandably, the second housing 13 can be a rectangular structure, having two opposite long sides and two short sides. The two ends of the short sides are connected to the two long sides, and the two ends of the long sides are connected to the two short sides. In this embodiment, the first housing 12 and the second housing 13 share a common long side or short side; that is, the first housing 12 and the second housing 13 have a shared common side. The two long sides and two short sides of the first housing 12 define a first opening 121, and the two long sides and two short sides of the second housing 13 define a second opening 131. The first opening 121 and the second opening 131 respectively communicate with the mounting cavity. Optionally, the first opening 121 and the second opening 131 are located on two adjacent surfaces of the outer housing 1.

[0063] It should be noted that when the outer shell 1 is a metal part, the magnetic circuit system 2 is fixed to the outer shell 1 by bonding or welding. In another embodiment, when the outer shell 1 is made of plastic injection molding, the side magnetic plate of the magnetic circuit system 2 is first injection molded into the outer shell 1 as an insert, or the magnetic circuit system 2 is fixed to the outer shell 1 by bonding, and then the other parts are bonded and fixed. This is not limited here.

[0064] In this embodiment, the magnetic circuit system 2 is disposed within the mounting cavity of the outer casing 1 and is connected to the first housing 12 and the second housing 13 of the outer casing 1. The vibration system 3 is connected to the first housing 12 and the second housing 13 of the outer casing 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 housing 12 and covers the first opening 121, and the second vibration component 32 is connected to the second housing 13 and covers the second opening 131. Thus, the first housing 12 and the second housing 13 of the outer casing 1, the first vibration component 31 and the second vibration component 32, and the magnetic circuit system 2 together enclose and form a vibration space.

[0065] Understandably, 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, so that the first vibration component 31 and the second vibration component 32 share the magnetic circuit system 2, thereby improving the magnetic field utilization rate and reducing the cost of the sound generating device 100. In this embodiment, 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 vibration direction of the first vibration component 31 is set perpendicular to the vibration direction of the second vibration component 32.

[0066] In this embodiment, the magnetic circuit system 2 provides a magnetic field and driving force to 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 produce sound respectively, thereby improving the sound output effect.

[0067] 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 setting the outer shell 1 as a first shell 12 and a second shell 13 arranged at an angle and enclosing them to form an installation cavity, thereby using the installation cavity to install and fix the magnetic circuit system 2 and the vibration system 3.

[0068] In one embodiment, the dimension of the magnetic circuit system 2 along the vibration direction of the first vibration component 31 is smaller than its dimension along the vibration direction of the second vibration component 32, thereby reducing the size of the sound-generating device 100 and facilitating the miniaturization design of the sound-generating device 100.

[0069] 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. The first magnetic circuit portion 22 is disposed on the basin frame 21 and is opposite to and spaced from the first vibration component 31. The first magnetic circuit portion 22 is provided with a first magnetic gap 221. The second magnetic circuit portion 23 is disposed on the basin frame 21 and is opposite to and spaced from the second vibration component 32. 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.

[0070] In this embodiment, as Figures 5 to 9 , Figure 16 As shown, the basin frame 21 of the magnetic circuit system 2 provides a mounting base 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 located on the side of the basin frame 21 facing the outer shell 1. 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.

[0071] Understandably, the first magnetic circuit portion 22 and the second magnetic circuit portion 23 can be connected and fixed to the basin frame 21 by adhesive bonding. The basin frame 21 can be a magnetic plate or a magnetic basin 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 outer casing 1 by adhesive bonding, welding, etc., and is not limited here.

[0072] In this embodiment, a first magnetic gap 221 is provided in the first magnetic circuit portion 22, thereby providing clearance and vibration space for the first vibration component 31. A second magnetic circuit portion 23 is disposed on the side of the first magnetic circuit portion 22 facing away from the first vibration component 31, and is opposite and spaced from the second vibration component 32. This allows the second magnetic circuit portion 23 to cooperate with the first magnetic circuit portion 22 to form a second magnetic gap 231. This provides clearance and vibration space for the second vibration component 32 while allowing the first and second vibration components 31 to share a portion of the first magnetic circuit portion 22, thereby improving the magnetic field utilization rate of the magnetic circuit system 2 and effectively reducing costs.

[0073] To facilitate the installation and fixation of the first magnetic circuit portion 22 and the second magnetic circuit portion 23, and to ensure that the first magnetic circuit portion 22 and the second magnetic circuit portion 23 are respectively opposite to the first vibration component 31 and the second vibration component 32, in one embodiment, the basin frame 21 includes a first segment 211, a second segment 212 and a third segment 213 connected in sequence. The first segment 211 and the third segment 213 are respectively set at an angle to the second segment 212 and are located on opposite sides of the second segment 212; part of the first magnetic circuit portion 22 is disposed in the first segment 211 and part of the second magnetic circuit portion 23 is disposed in the third segment 213.

[0074] In this embodiment, as Figure 2 , Figures 5 to 9 , Figure 16 As shown, the first section 211, the second section 212, and the third section 213 of the basin frame 21 are integrally formed. Optionally, the first section 211, the second section 212, and the third section 213 form a Z-shaped structure. In this way, the second section 212 creates a height difference between the first section 211 and the third section 213, which facilitates the installation and fixation of the first magnetic circuit part 22 using the first section 211 of the basin frame 21, and the installation and fixation of the second magnetic circuit part 23 using the second section 212 and the third section 213 of the basin frame 21. The second magnetic circuit part 23 is located below the portion of the first magnetic circuit part 22 corresponding to the third section 213. This improves the structural compactness while allowing the second vibration assembly 32 to share a portion of the first magnetic circuit part 22.

[0075] Optionally, the first segment 211 and the third segment 213 are parallel to the first housing 12, or the second segment 212 is parallel to the second housing 13, making the appearance of the sound-generating device 100 more regular and easier to assemble in the external environment. The second magnetic circuit portion 23 can further be connected to the second segment 212 to increase the connection reliability of the second magnetic circuit portion.

[0076] 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 disposed outside the central magnetic circuit portion 222 and is spaced apart from the central magnetic circuit portion 222 to form a first magnetic gap 221.

[0077] like Figures 3 to 9 , Figure 16 As shown, a portion of the central magnetic circuit portion 222 and a portion 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 basin frame 21. The first magnetic circuit portion 22 is connected and fixed to the first housing 12 of the outer shell 1 through the side magnetic circuit portion 223. Optionally, the basin 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 housing 12 of the outer shell 1.

[0078] Understandably, the central magnetic circuit portion 222 includes a central magnet and a central washer stacked together, with the central magnet positioned between the central washer and the basin stand 21. The side magnetic circuit portion 223 includes a side magnet and a side washer stacked together, with the side magnet positioned between the side washer and the basin stand 21. Understandably, the side washer of the side magnetic circuit portion 223 may be bonded to the outer casing 1. Optionally, the side washer and the outer casing 1 are integrally molded.

[0079] In this embodiment, the central washer and the side washer can be selected as magnetic plate structures. The central magnet 22211 and the central washer have the same structural outline, and the central magnet and the central washer can be selected as plate-shaped structures or ring-shaped structures, which are not limited here. The side magnets and the side washer have the same structural outline, and the side magnets and the side washer can be selected as plate-shaped structures or ring-shaped structures, which are not limited here.

[0080] Understandably, the side magnetic circuit portion 223 can be a ring structure, with the ring-shaped side magnetic circuit portion 223 surrounding the central magnetic circuit portion 222 and spaced apart from the central magnetic circuit portion 222 to form a ring-shaped first magnetic gap 221. Optionally, the side magnetic circuit portion 223 can be ring-shaped, or polygonal in shape such as quadrilateral, pentagon, or hexagon.

[0081] Of course, there are multiple side magnetic circuit portions 223, which are spaced apart and arranged around the central magnetic circuit portion 222.

[0082] In one embodiment, the side magnetic circuit portion 223 includes a plurality of side magnetic circuit portions 223 arranged around the central magnetic circuit portion 222 and spaced apart from the central magnetic circuit portion 222 to form a first magnetic gap 221, and adjacent two side magnetic circuit portions 223 are spaced apart to form a gap communicating with the first magnetic gap 221.

[0083] In one embodiment, both the central magnetic circuit portion 222 and the side magnetic circuit portion 223 of the first magnetic circuit portion 22 are magnetized in the vertical direction, but their magnetization directions are opposite. It is understood that the central magnet 22211 of the central magnetic circuit portion 222 and the side magnet 22311 of the side magnetic circuit portion 223 are both magnetized in the vertical direction, but their magnetization directions are opposite. It is understood that this arrangement can optimize the nonlinear performance of the BL (Browser-Range Stroke).

[0084] 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 vibration component 31, that is, the first vibration component 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 vibration component 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.

[0085] In one embodiment, the second magnetic circuit portion 23 is opposite to and spaced from the partial central magnetic circuit portion 222 and the partial side magnetic circuit portion 223 to cooperate in forming a second magnetic gap 231. Understandably, the second magnetic circuit portion 23 is opposite to and spaced from the partial central magnetic circuit portion 222 to form a third sub-gap, and the second magnetic circuit portion 23 is opposite to and spaced from the partial side magnetic circuit portion 223 to form a fourth sub-gap. The third and fourth sub-gaps are connected to form the second magnetic gap 231.

[0086] In this embodiment, the central magnetic circuit portion 222 includes a central magnetic circuit 2221 and a first common magnetic circuit 2222 connected to each other, 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 forms a first sub-gap 2211 at intervals. 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 forms a second sub-gap 2212 at intervals. The first sub-gap 2211 and the second sub-gap 2212 are connected 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.

[0087] Optionally, the second magnetic circuit portion 23 can be a single integral structure or a separate structure. As one embodiment, such as... Figure 16 As shown, the second magnetic circuit portion 23 includes a first magnet 233 and a second magnet 234 spaced apart. 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. 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. The third sub-gap and the fourth sub-gap are connected to form a second magnetic gap 231.

[0088] 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.

[0089] 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 separate structures connected together by bonding or other means. It is understood that both the central magnetic circuit 2221 and the first common magnetic circuit 2222 include a central magnet 22211 and a central washer 22212. The central washer of the central magnetic circuit 2221 and the first common magnetic circuit 2222 can be a single integral structure, meaning that the central magnetic circuit 2221 and the first common magnetic circuit 2222 share a single central washer; this is not limited here.

[0090] It is understood that the side magnetic circuit portion 223 includes the side magnetic circuit 2231 and the second common magnetic circuit 2232, that is, part of the side magnetic circuit portion 223 is the second common magnetic circuit 2232, and the other 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 set separately.

[0091] In this embodiment, the side magnetic circuit portion 223 includes multiple side magnetic circuit portions 223, each including a side magnetic circuit 2231 and a second common magnetic circuit 2232. Optionally, the side magnetic circuit portion 223 includes four, one being the second common magnetic circuit 2232 and three being side magnetic circuits 2231. It is understood that the three side magnetic circuits 2231 are spaced apart outside the central magnetic circuit 2221 and form a first sub-gap 2211 with the central magnetic circuit 2221. 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 forms a second sub-gap 2212 with the first sub-gap 2211 and the second sub-gap 2212 to form a first magnetic gap 221.

[0092] It should be noted that both the side magnetic circuit 2231 and the second common magnetic circuit 2232 include a side magnet and a side washer stacked together, with the side magnet disposed between the side washer and the basin stand 21.

[0093] In order for the magnetic circuit system 2 to provide magnetic field and driving force to the first vibration component 31 and the second vibration component 32 at the same time, the central magnetic circuit part 222 and the side magnetic circuit part 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. The first magnet 233 and the central magnetic circuit part 222 are magnetized in the same direction.

[0094] To ensure that the second magnetic circuit portion 23 provides a sufficient magnetic field in conjunction with the first common magnetic circuit 2222 and the second common magnetic circuit 2232, optionally, the thickness of the first common magnetic circuit 2222 is 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 is understood that the magnet thicknesses of the first common magnetic circuit 2222 and the second common magnetic circuit 2232 are greater than or equal to the magnet thicknesses of the central magnetic circuit 2221 and the side magnetic circuit 2231.

[0095] 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 the vertical direction, and the magnetization directions of the magnets in the first common magnetic circuit 2222 and the second common magnetic circuit 2232 are opposite.

[0096] Optionally, the first magnet 233 and the first common magnetic circuit 2222 are magnetized in the vertical direction, and the magnetization directions of the first magnet 233 and the magnets in the first common magnetic circuit 2222 are the same. The second magnet 234 and the second common magnetic circuit 2232 are magnetized in the vertical direction, and the magnetization directions of the second magnet 234 and the magnets in the second common magnetic circuit 2232 are the same. This configuration can optimize the nonlinear performance of BL.

[0097] Understandably, 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 vibration component 31, that is, the first vibration 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 vibration component 31.

[0098] In one embodiment, the second magnetic circuit portion 23 is opposite to the partial side magnetic circuit portion 223 and a second magnetic gap 231 is formed between them. For example... Figures 3 to 9 As shown, 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 shared magnetic circuit 2232. The side magnetic circuit 2231 is located outside the central magnetic circuit 2221 and forms a first sub-gap 2211 at intervals. The second shared magnetic circuit 2232 is located outside the central magnetic circuit 2221 and forms a second sub-gap 2212 at intervals. The first sub-gap 2211 and the second sub-gap 2212 are connected to form a first magnetic gap 221. The second magnetic circuit portion 23 and the second shared magnetic circuit 2232 form a second magnetic gap 231.

[0099] In this embodiment, the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232. That is, a portion of the side magnetic circuit portion 223 is the second common magnetic circuit 2232, and the other portion 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.

[0100] In this embodiment, the side magnetic circuit portion 223 includes multiple portions, each including a side magnetic circuit 2231 and a second common magnetic circuit 2232. Optionally, the side magnetic circuit portion 223 includes four portions: one second common magnetic circuit 2232 and three side magnetic circuits 2231. It is understood that the three side magnetic circuits 2231 are spaced apart on the outside of the central magnetic circuit 2221, forming a first sub-gap 2211 with the central magnetic circuit 2221. The second common magnetic circuit 2232 is spaced apart on the outside of the central magnetic circuit 2221, forming a second sub-gap 2212 with the central magnetic circuit 2221. 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.

[0101] It should be noted that the central magnetic circuit 2221 includes a central magnet 22211 and a central washer 22212 stacked together, with the central magnet 22211 disposed between the central washer 22212 and the basin stand 21. The side magnetic circuit 2231 includes a first side magnet 22311 and a first side washer 22312 stacked together, with the first side magnet 22311 disposed between the first side washer 22312 and the basin stand 21. The second common magnetic circuit 2232 includes a second common washer 22322, with both the first side washer 22312 and the second common washer 22322 disposed opposite to the central washer 22212.

[0102] In one embodiment, the second magnetic circuit portion 23 includes a third magnet 232, which is opposite to the second common magnetic circuit 2232 and forms a second magnetic gap 231 between them.

[0103] In this embodiment, the second common magnetic circuit 2232 can be configured in various ways. For example... Figure 7 As shown, in order to reduce the thickness of the sound-generating device 100, the second common magnetic circuit 2232 may consist only of the second common washer 22322, with the third magnet 232 facing and spaced apart from the second common washer 22322, forming a second magnetic gap 231 between them. It is understood that the second common washer 22322 is opposite to the center washer 22212, and the thickness of the second common washer 22322 is less than the thickness of the side magnetic circuit 2231.

[0104] Or, such as Figure 6As shown, in order to increase the magnetic field strength of the second magnetic gap 231, the second common magnetic circuit 2232 includes a second common washer 22322 and a second common magnet 22321 disposed on the side of the second common washer 22322 near the frame 21. The third magnet 232 is opposite to and spaced apart from the second common magnet 22321, forming the second magnetic gap 231 between them. Optionally, the thickness of the second common magnet 22321 is less than the thickness of the first side magnet 22311, so that the sound generating device 100 can still have a small thickness dimension.

[0105] It is also possible, such as Figure 5 As shown, to further compensate for the magnetic field loss of the second sub-magnetic gap, the second common magnetic circuit 2232 includes a second common washer 22322 and a second common magnet 22321 disposed near the second magnetic circuit portion 23 of the second common washer 22322. The second common magnet 22321 includes a main body portion 22323 and an extension portion 22324 that bends and extends from one end of the main body portion 22323 near the second sub-gap 2212. The extension portion 22324 abuts against the third magnet 232 or the frame 21, and a second magnetic gap 231 is formed between the main body portion 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.

[0106] In other embodiments, the second magnetic gap 231 may also 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 portion that is bent and extends from one end of the second main body near the second sub-gap 2212. The second extension portion abuts against the second common magnet 22321, and the second magnetic gap 231 is formed between the second main body and the second common magnet 22321.

[0107] In one embodiment, the thickness of the third magnet 232 is less than or equal to the thickness of the side magnetic circuit 2231, which can provide sufficient magnetic field strength for the second magnetic gap 231 and reduce the height of the sound-generating device 100.

[0108] To ensure air pressure balance within the vibration space of the sound-generating device 100, thereby guaranteeing the vibration balance of the first vibration component 31 and the second vibration component 32, in one embodiment, the frame 21 is provided with a vent hole 214. To prevent impurities or sound-absorbing particles from entering the sound-generating device 100 through the vent hole 214 and affecting its performance, the sound-generating device 100 also includes a breathable isolation member 4 corresponding to the vent hole 214.

[0109] In one embodiment, such as Figure 3 and Figure 4As shown, the vent holes 214 are located at the four corners of the first segment 211, and the vent holes 214 correspond to the gaps formed between the first magnetic gap 221 and / or the two side magnetic circuit portions 223.

[0110] 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 housing 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.

[0111] In this embodiment, the first diaphragm 311 includes a central portion, a folded ring portion surrounding the central portion, and a fixing portion located outside the folded ring portion. The fixing portion is connected to the first housing 12 of the outer casing 1 so that the first diaphragm 311 covers the first opening 121. It is understood that the central portion, folded ring portion, and fixing portion of the first diaphragm 311 are integrally formed. The folded ring portion surrounds the central portion and is located between the central portion and the fixing portion; the folded ring portion can be an upward or downward protruding structure. The first diaphragm 311 is connected and fixed to the first housing 12 of the outer casing 1 of the sound-generating device 100 via the fixing portion, thereby improving the connection stability and sealing between the outer casing 1 and the first diaphragm 311.

[0112] Understandably, in order to increase the effective vibration area of ​​the first diaphragm 311, the fixing part can be formed by extending downward or upward from the outer side of the folded ring part, so that the fixing part is connected and fixed to the inner or outer side wall of the housing 1.

[0113] 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 electrically connected to the conductive layer through the first conductive insert 122, thereby realizing the conduction of the first voice coil 312 with the external circuit.

[0114] Optionally, the first diaphragm 311 is square in shape, and the conductive layer can be disposed at the corner of the first diaphragm 311. Of course, the conductive layer can also be disposed on the long axis or short axis of the first diaphragm 311, etc., without limitation.

[0115] In this embodiment, the conductive layer enables electrical conductivity, allowing the first voice coil 312 to conduct electricity with the external circuit via the conductive layer. It is understood that the conductive layer can be applied to the first diaphragm 311 by bonding or by spraying. Optionally, the conductive layer is coated on the side of the first diaphragm 311 facing the magnetic circuit system 2, for example, by curing a coating to form a coating structure; this is not limited here.

[0116] In this embodiment, the first voice coil 312 can be selected as 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 short axis sides are connected end to end to form a ring structure.

[0117] In this embodiment, by providing a perforated hole in the central portion of the first diaphragm 311, the overall weight of the first diaphragm 311 can be effectively reduced. Optionally, the perforated hole is provided at the central position of the central portion; the perforated hole can be a through hole, a hollow hole, or an opening. Optionally, there can be one or more perforated holes, which is not limited here.

[0118] To enhance the structural strength of the first diaphragm 311 and prevent excessive shrinkage deformation during vibration, in one embodiment, the first vibration assembly 31 further includes a first dome 314 connected to the side of the first diaphragm 311 facing away from the first voice coil 312. It is understood that by providing the first dome 314 at the center of the first diaphragm 311, connecting it to the center and covering the perforated hole, the structural strength of the first diaphragm 311 is enhanced. Furthermore, it prevents external impurities or dust from entering the sound-generating device 100 through the perforated hole, thereby reducing the high THD distortion of the sound-generating device 100 and improving audio performance.

[0119] In one embodiment, such as Figure 4 As shown, the first vibration assembly 31 also includes a first centering support 313, one end of which is connected to the outer shell 1, and the other end of which is connected to the end of the first voice coil 312 away from the first diaphragm 311.

[0120] In this embodiment, one end of the first centering support 313 is connected to the first housing 12 of the outer shell 1, and the other end of the first centering support 313 is connected to the side of the first voice coil 312 facing away from the first diaphragm 311. It can be understood that by setting the first centering support 313 such that one end of the first centering support 313 is connected to the first housing 12 of the outer shell 1, and the other end of the first centering support 313 is connected to the first voice coil 312, the vibration of the first diaphragm 311 driven by the first voice coil 312 is balanced and stabilized by the first centering support 313, preventing the first diaphragm 311 from oscillating or polarizing due to the first voice coil 312.

[0121] Optionally, four first centering supports 313 are provided, corresponding to the four notches of the first magnetic circuit portion 22 of the magnetic circuit system 2. Alternatively, two first centering supports 313 are provided, disposed on both sides of the short axis of the first voice coil 312. In this embodiment, the first centering support 313 includes an outer fixing part, an inner fixing part, and an elastic part connecting the outer fixing part and the inner fixing part. The outer fixing part is connected to the first housing 12 of the outer shell 1, and the inner fixing part is connected to the first voice coil 312.

[0122] The first centering support 313 can be made of PI material, or it can be made of FPCB. Alternatively, the first centering support 313 can have a conductive circuit inside. In this way, one end of the first centering support 313 can be conductively connected to the lead wire of the first voice coil 312, and the other end of the first centering support 313 is fixed to the outer casing 1 for connection and conduction with the external circuit. In this way, the external circuit is connected and conducted with the first voice coil 312 by the first centering support 313, which effectively avoids the risk of the lead wire of the first voice coil 312 breaking during vibration.

[0123] In one embodiment, such as Figures 3 to 9 , Figure 16 As shown, 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.

[0124] In this embodiment, the second voice coil 323 can be selected as a flat voice coil, and the second voice coil 323 has a square or racetrack-shaped ring structure. It can be understood that the second voice coil 323 has two major axis sides and two minor axis sides connected end to end, and each minor axis side is located between the two major axis sides. That is, the two minor axis sides of the second voice coil 323 are opposite and spaced apart, and the two major axis sides are opposite and spaced apart, so that the major axis sides and minor axis sides are connected end to end to form a ring structure.

[0125] In one embodiment, such as Figure 16 As shown, the second magnetic circuit portion 23 is opposite to and spaced apart from the part of the central magnetic circuit portion 222 and the part of the side magnetic portion to form a second magnetic gap 231. 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.

[0126] More specifically, the second magnetic circuit portion 23 is opposite to and spaced from the partial central magnetic circuit portion 222 to form a third sub-gap, and the second magnetic circuit portion 23 is opposite to and spaced from the partial 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 located in the third sub-gap, and the other long axis side is located in the fourth sub-gap.

[0127] In one embodiment, such as Figures 3 to 9 As shown, the second magnetic circuit portion 23 is opposite to and spaced apart from the partial side magnetic portion 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 disposed in the second magnetic gap 231.

[0128] In one embodiment, such as Figures 5 to 7 , Figure 9 As shown, the plane containing the second voice coil 323 is perpendicular to the vibration direction of the first resonant component 31, that is, the plane containing the second voice coil 323 is parallel to the first mounting surface 123. This design makes the magnetic circuit shape of the side magnetic circuit portion 223 and the second magnetic circuit portion 23 more regular, reducing the production and assembly costs of the magnetic circuit system 2.

[0129] In one embodiment, such as Figures 3 to 9 As shown, the first housing 12 and the second housing 13 have a common side 133, defining the first vibration component 31 to vibrate along a first direction. The second housing 13 includes a common side 133 and a first side 134 distributed along the first direction. Along the first direction, the outer edge of the common side 133 has a first extension 1331 that extends beyond the magnetic circuit system 2 and is used to mount the first diaphragm 311. The outer edge of the first side 134 is flush with the magnetic circuit system 2. The second vibration component 32 is defined to vibrate along a second direction. The side of the common side 133 and the first side 134 that is opposite to each other is provided with a second extension 1332 for mounting the second diaphragm 321. The connection area 3221 is offset from the center position of the second diaphragm 321 along the first direction and is located on the side of the center position away from the first vibration component 31.

[0130] Understandably, in this embodiment, in the second direction, the edge of the second diaphragm 321 near the 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 1332 of the fixed side. In this way, while ensuring the proper 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.

[0131] 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 that connects to the second voice coil 323. Understandably, the connection region 3221 is located on the side of the second dome 322 away from the first resonating component 31 at its center.

[0132] Of course, in other embodiments, the plane containing the second voice coil 323 is perpendicular to the second mounting surface 135. This allows the center position of the second voice coil 323 on the second diaphragm 321 to be adjusted, making the second diaphragm 321 symmetrical about the second voice coil 323, thus improving its sound production effect.

[0133] 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, and a second magnetic gap 231 is formed between them. The extension direction of the second magnetic gap 231 is perpendicular to the second mounting surface 135.

[0134] 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 with an aspect ratio of inner diameter less than or equal to 20, and the second voice coils 323 are distributed along their long axis. It can be understood that the second voice coils 323 are distributed along the length direction of the second magnetic gap 231.

[0135] In one embodiment, the second diaphragm 321 protrudes towards the side away from the magnetic circuit system 2; alternatively, the second diaphragm 321 protrudes towards the side closer to the magnetic circuit system 2. This allows the sound-generating device 100 to better match the shape of electronic devices such as smart glasses, reducing the space occupied by the electronic device, and enabling flexible selection based on actual conditions.

[0136] In one embodiment, such as Figures 13 to 14 , Figure 16 As shown, the sound-generating device 100 also includes a sound-guiding conduit 61, which is configured corresponding to the second vibration component 32. It is understood that the sound-guiding conduit 61 has a hollow structure, thus allowing the sound emitted by the second diaphragm 321 of the second vibration component 32 to be smoothly transmitted through the sound-guiding conduit 61, thereby improving the sound-generating effect of the second vibration component 32.

[0137] Furthermore, such as Figures 13 to 14 As shown, the first housing 12 and the second housing 13 are arranged vertically. The side of the sound guide duct 61 away from the second vibration component 32 is an inclined surface, and the inclined surface forms an angle with the second housing 13. This facilitates the assembly of the sound-generating device 100 with external devices, such as electronic equipment. While applying force to the mounting surface of the first housing 12 for assembly, the inclined surface of the sound guide duct 61 can also be firmly secured, improving the operability of the sound-generating device 100 during assembly. Furthermore, the distance between the end of the inclined surface closer 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.

[0138] like Figure 14 As shown, the inner wall of the device housing 7 of the electronic device is provided with a first mounting surface 71 and a second mounting surface 72 corresponding to the first mounting surface 123 and the inclined surface, respectively. The included angle between the first mounting surface 71 and the second mounting surface 72 is greater than 90°. The first mounting surface 71 and the first mounting surface 123 are sealed together, as are the second mounting surface 72 and the inclined surface. It can be understood that when force is applied to the first mounting surface 123 for assembly and sealing between it and the first mounting surface 71, the inclined surface can also be tightened under force due to its inclined setting, thus improving the sealing performance between it and the second mounting surface 72. In this way, the operability of the sound-generating device 100 during assembly is improved.

[0139] Understandably, the surface of the sound guide duct 61 away from the second vibration component 32 is provided with sealing foam 62 to improve the sealing between the sound guide duct 61 and the external device, thereby improving the sound quality of the sound generating device 100.

[0140] Furthermore, the surface of the second outer shell 1 is provided with a heat-fusion column, and the sound guide pipe 61 is provided with a corresponding fixing part. The second outer shell 1 and the sound guide pipe 61 are heat-fused together to improve the installation reliability of the sound guide pipe 61.

[0141] Of course, in other embodiments of the sound-generating device 100, such as Figure 15 As shown, the sound-generating device 100 may also omit the sound-guiding duct 61. The first mounting surface 123 can be horizontally positioned, and the second mounting surface 135 can be inclined, with the included angle between the first mounting surface 123 and the second mounting surface 135 being greater than 90°, to improve assembly operability. Thus, by tilting the second mounting surface 135, the assembly operability of the sound-generating device 100 can also be improved.

[0142] In the sound-generating 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, reciprocates and cuts magnetic lines of force under the drive of the magnetic field force of the first magnetic circuit portion 22 of the magnetic circuit system 2, thereby causing the first diaphragm 311 of the first vibration component 31 in the vibration system 3 to vibrate and generate sound in the vertical direction. After receiving an alternating current signal from an external circuit, the second voice coil 323, under the drive of the magnetic field force in the second magnetic gap 231 formed by the second magnetic circuit portion 23 and the first magnetic circuit portion 22 in the magnetic circuit system 2, reciprocates and cuts magnetic lines of force in the left-right direction, thereby fully utilizing the magnetic field of the magnetic circuit system 2, so that the first voice coil 312 and the second voice coil 323 respectively drive the first diaphragm 311 and the second diaphragm 321 to vibrate and generate sound, thereby effectively improving the sound generation effect of the sound-generating device 100.

[0143] In the sound-generating device 100 of the present invention, the first vibration component 31 is used for low-frequency sound generation, and the second vibration component 32 is used for high-frequency sound generation. 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 more rounded.

[0144] Specifically, the sound-generating device 100 has a frequency division point F1. When the sound-generating device 100 is used in electronic devices, the Fh (front cavity resonant frequency) corresponding to the first vibration component 31 is greater than or equal to 4kHz and less than or equal to 7kHz, and F1 > Fh. In this way, the phase abrupt change of the sound waves of the first vibration component 31 and the second vibration component 32 at the frequency division point F1 can be avoided, ensuring that the vibration directions of the first vibration component 31 and the second vibration component 32 are consistent at the frequency division point F1, and the sound pressure of the sound-generating device 100 is stable.

[0145] Optionally, F1 is greater than or equal to 6kHz, so that the sound pressure level curve of the sound generating device 100 after the combination of the first vibration component 31 and the second vibration component 32 is relatively smooth, without producing large troughs, and the listening experience is natural.

[0146] Furthermore, the crossover point F1 is greater than or equal to 6kHz and less than or equal to 10kHz, and 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 point, resulting in a richer and more natural sound quality. The sound-generating device 100 in this embodiment produces deep and powerful bass and clear and rich treble.

[0147] In one embodiment, the housing 1 of the sound-generating device 100 is provided with conductive inserts, including a first conductive insert 122 and a second conductive insert 132, both of which are electrically connected to an external circuit.

[0148] like Figure 10 and Figure 11 As shown, the first conductive insert 122 is electrically connected to the first vibration component 31 and the external circuit, and the second conductive insert 132 is electrically connected to the second vibration component 32 and the external circuit, thus realizing the 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 insert 122 are exposed outside the housing 1 to form a first inner pad 1221 and a first outer pad, and the two ends of the second conductive insert 132 are exposed outside the housing 1 to form a second inner pad 1321 and a second outer pad. The first inner pad 1221 is electrically connected to the first vibration component 31, the second inner pad 1321 is electrically connected to the second vibration component 32, and both the first and second outer pads are electrically connected to the external circuit.

[0149] In one embodiment, a first outer pad is electrically connected to a second outer pad via an electrical connector 5 and is also electrically connected to an external circuit. That is, the second outer pad forms a shared outer pad 14, through which the external circuit is simultaneously electrically connected to the first voice coil 312 and the second voice coil 323. Optionally, a first conductive insert 122 is disposed in the first housing 12, and a second conductive insert 132 is disposed in the second housing 13. This design reduces process and material costs and facilitates mass production.

[0150] In other embodiments, a first conductive insert 122 is close to a second conductive insert 132, and its first outer pad and second outer pad are integrally formed to form a common outer pad 14. The external circuit is electrically connected to the first voice coil 312 and the second voice coil 323 through this common outer pad 14.

[0151] Optionally, the first conductive insert 122 and the second conductive insert 132, which are close to each other, are disposed in the connection area 3221 of the first housing 12 and the second housing 13. This design cleverly utilizes the external shape of the housing 1, reduces the number of conductive inserts to be molded and the process, reduces the size of the external electrical connector 5 (flexible circuit board), and further reduces production costs.

[0152] The present invention also proposes an electronic device, which includes a device housing and the aforementioned sound-generating device 100, wherein the sound-generating device 100 is disposed in the device housing. The specific structure of the sound-generating device 100 is as described in the foregoing embodiments. Since this electronic device adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0153] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sound-generating device, characterized in that, The sound-generating device includes: The housing includes a first housing and a second housing arranged at an angle, the first housing and the second housing enclosing a mounting cavity and having a common side; A magnetic circuit system, disposed within the mounting cavity, comprising: Sink stand; The first magnetic circuit portion is disposed on the frame and is opposite to and spaced from the first vibration component. The first magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion. 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. The side magnetic circuit is located outside the central magnetic circuit and forms a first sub-gap at intervals. The second common magnetic circuit is located outside the central magnetic circuit and forms a second sub-gap at intervals. The first sub-gap and the second sub-gap are connected to form the first magnetic gap. The second magnetic circuit portion, disposed on the frame, is opposite to and spaced from the second vibration assembly. The second magnetic circuit portion includes a third magnet, which is opposite to the second common magnetic circuit and forms the second magnetic gap between them; and... A vibration system, comprising a first vibration component and a second vibration component, wherein the first vibration component is connected to the first housing and is opposite to the magnetic circuit system, and the second vibration component is connected to the second housing and is opposite to the magnetic circuit system, wherein the vibration direction of the first vibration component and the vibration direction of the second vibration component are set at an angle. The first vibration component includes a first diaphragm and a first voice coil, one end of the first voice coil is connected to the first diaphragm, and the other end of the first voice coil is suspended in the first magnetic gap; The second vibrating component includes a second diaphragm and a second voice coil. The second diaphragm is disposed in the second housing, and the second voice coil is a flat voice coil. The first vibration component is defined to vibrate along a first direction. The second housing includes a common side and a first side distributed along the first direction. Along the first direction, the outer edge of the common side has a first extension that extends beyond the magnetic circuit system and is used to mount the first diaphragm. The outer edge of the first side is flush with the magnetic circuit system. The second vibration component is defined to vibrate along a second direction. The side of the common side that is opposite to the first side extends along the second direction and is provided with a second extension for mounting the second diaphragm. The second diaphragm has a connection area connected to the second voice coil. The connection area is offset from the center position of the second diaphragm along the first direction and is located on the side away from the center position from the first vibration component. 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 disposed between the two long axis sides. One of the long axis sides is connected to the connection area, and the other long axis side is disposed in the second magnetic gap.

2. The sound-generating device according to claim 1, characterized in that, The second diaphragm includes a second dome located at the center of the second diaphragm, and the second voice coil is connected to the second dome, with the second dome having the connection area.

3. The sound-generating device according to claim 1, characterized in that, The second common magnetic circuit includes a second common magnet, and the third magnet is opposite to the second common magnet and spaced apart to form the second magnetic gap; Alternatively, the second common magnetic circuit includes a second common magnet, which includes a main body and an extension that extends from one end of the main body near the second sub-gap, the extension abutting against the second magnet or the basin stand, and the second magnetic gap being formed between the main body and the third magnet; Alternatively, the second common magnetic circuit includes a second common magnetic guide plate, the second magnetic circuit portion being opposite to and spaced from the second common magnetic guide plate, and the third magnet forming the second magnetic gap with the second common magnetic guide plate.

4. The sound-generating device according to claim 1, 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 set at an angle to the second section and are located on opposite sides of the second section. A portion of the first magnetic circuit is located in the first section, and a portion of the second magnetic circuit is located in the third section.

5. The sound-generating device according to claim 4, characterized in that, The basin frame is provided with a vent hole, which is connected to the first magnetic gap and / or the second magnetic gap. The sound-generating device also includes a breathable isolation net corresponding to the vent hole. And / or, the first segment and the third segment are parallel to the first housing.

6. The sound-generating device according to any one of claims 1 to 4, characterized in that, The first vibration component is used for low-frequency sound generation, and the second vibration component is used for high-frequency sound generation; And / or, the vibration direction of the first vibration component is perpendicular to the vibration direction of the second vibration component.

7. An electronic device, characterized in that, It includes a device housing and a sound-generating device as described in any one of claims 1 to 6, wherein the sound-generating device is disposed in the device housing.

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