Sound generating devices and electronic equipment

Abstract

The present invention belongs to the technical field of sound-to-electric conversion, and specifically relates to a sound-generating device and an electronic device. The sound-generating device of the present invention includes a first sound-generating unit and a second sound-generating unit, the first sound-generating unit includes a first vibration system and a first magnetic circuit system matched with the first vibration system, the second sound-generating unit includes a second vibration system and a second magnetic circuit system matched with the second vibration system, the first vibration system is arranged around the second magnetic circuit system, the first magnetic circuit system is arranged around the second vibration system, and along the common vibration direction of the first vibration system and the second vibration system, the first magnetic circuit system and the second magnetic circuit system are staggered, and the first centering support plate assembly and the second centering support plate assembly are staggered. According to the sound-generating device of the present invention, while the sound-generating device realizes double-sided generation, the overall thickness of the first sound-generating unit and the second sound-generating unit in the vibration direction is effectively reduced, thereby reducing the overall thickness of the sound-generating device.

Description

Technical Field

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

[0002] The double-sided sound-emitting device generally includes a housing and two sound-emitting units disposed in the housing. Each sound-emitting unit includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil connected to the diaphragm. The magnetic circuit system is used to form a magnetic field. For example, the magnetic circuit system includes a center magnet, a side magnet, and a yoke. The center magnet and the side magnet are disposed on the yoke. A magnetic field is formed between the center magnet and the side magnet. The voice coil vibrates in response to an electrical signal from an external circuit and is subjected to the Ampere force in the magnetic field. The voice coil drives the diaphragm to vibrate to radiate sound waves outward.

[0003] Traditional sound-generating devices, in order to achieve double-sided sound generation, need to use two devices stacked relatively, which inevitably increases the thickness. In order to reduce the height of the device, traditional devices can only compress the height of the magnet of the magnetic circuit system and the amplitude of the vibration system, but this in turn reduces the product performance. Summary of the invention

[0004] The purpose of the present invention is to at least solve the problem of large thickness of the double-sided sound-emitting device. This purpose is achieved by:

[0005] A first aspect of the present invention provides a sound-generating device, comprising:

[0006] A first sound-generating unit, the first sound-generating unit comprising a first vibration system and a first magnetic circuit system matched with the first vibration system, the first vibration system at least comprising a first voice coil;

[0007] A second sound-generating unit, the second sound-generating unit comprising a second vibration system and a second magnetic circuit system matched with the second vibration system, the second vibration system at least comprising a second voice coil;

[0008] a first support member, the first vibration system is fixed to the first support member, and the first voice coil is connected to the first support member via a first centering support assembly;

[0009] A second support member, the second vibration system is fixed to the second support member, and the second voice coil is connected to the second support member via a second centering support assembly;

[0010] Among them, the first vibration system is arranged around the second magnetic circuit system, the first magnetic circuit system is arranged around the second vibration system, and along the common vibration direction of the first vibration system and the second vibration system, the first magnetic circuit system and the second magnetic circuit system are staggered, and the first centering support piece assembly and the second centering support piece assembly are staggered.

[0011] According to the sound-emitting device of the present invention, by setting a first sound-emitting unit and a second sound-emitting unit, and making the first vibration system of the first sound-emitting unit surround the second magnetic circuit system of the second sound-emitting unit, the first magnetic circuit system of the first sound-emitting unit surrounds the second vibration system of the second sound-emitting unit, and the first magnetic circuit system and the second magnetic circuit system are staggered along the common vibration direction of the first vibration system and the second vibration system, so that the first sound-emitting unit is sleeved on the outside of the second sound-emitting unit, and while the sound-emitting device realizes double-sided generation, the overall thickness of the first sound-emitting unit and the second sound-emitting unit in the vibration direction is effectively reduced, thereby reducing the overall thickness of the sound-emitting device, facilitating the assembly of the sound-emitting device, and ensuring the sound performance of the sound-emitting device. At the same time, the first centering support plate assembly and the second centering support plate assembly are staggered, which can support the first voice coil and the second voice coil respectively, so that there is no need to set a connecting piece to connect the first voice coil and the second voice coil, and the mass of the vibration system is effectively reduced.

[0012] In addition, the sound-generating device according to the present invention may also have the following additional technical features:

[0013] In some embodiments of the present invention, the first centering support plate assembly includes at least two first centering support plates, and the at least two first centering support plates are arranged along at least one diagonal of the first support member, and two ends of any first centering support plate are respectively used to connect the first voice coil and the first support member.

[0014] In some embodiments of the present invention, the number of the first centering supports is four, and the four first centering supports are arranged along two diagonal corners of the first support member.

[0015] In some embodiments of the present invention, the first centering support plate includes a first external connection portion, a first internal connection portion and a first elastic portion, the first external connection portion is connected to the first support member, the first internal connection portion is connected to the first voice coil, the first elastic portion connects the first external connection portion and the first internal connection portion, and the first elastic portion includes at least one arc segment.

[0016] In some embodiments of the present invention, the first centering support piece assembly includes at least one first welding portion, and the first welding portion is connected to the first centering support piece, or the first welding portion is a part of the first centering support piece.

[0017] In some embodiments of the present invention, the second centering support plate assembly includes at least two second centering support plates, and the at least two second centering support plates are arranged along at least one diagonal of the second support member, and the two ends of any second centering support plate are respectively used to connect the second voice coil and the second support member.

[0018] In some embodiments of the present invention, the number of the second centering supports is four, and the four second centering supports are arranged along two diagonal corners of the second support member.

[0019] In some embodiments of the present invention, the second centering support plate includes a second outer connecting portion, a second inner connecting portion and a second elastic portion, the second outer connecting portion is connected to the second support member, the second inner connecting portion is connected to the second voice coil, the second elastic portion connects the second outer connecting portion and the second inner connecting portion, and the second elastic portion includes at least one arc segment.

[0020] In some embodiments of the present invention, the second elastic portion includes two arc segments, and the bending directions of the two arc segments are consistent.

[0021] In some embodiments of the present invention, the second centering support piece assembly includes at least one second welding portion, and the second welding portion is connected to the second centering support piece, or the second welding portion is a part of the second centering support piece.

[0022] Another aspect of the present invention provides an electronic device, the electronic device having any one of the above-mentioned sound-generating devices, and the electronic device further comprising:

[0023] A shell, wherein a first receiving cavity is formed inside the shell, and the sound-generating device is arranged in the first receiving cavity, wherein the shell includes a first outer shell and a second outer shell arranged opposite to each other, the first magnetic circuit system of the sound-generating device is connected to the first outer shell, the second magnetic circuit system of the sound-generating device is connected to the second outer shell, a first sound outlet channel is formed between the second vibration system and the first outer shell, a second sound outlet channel is formed between the first vibration system and the second outer shell, and the shell is also provided with at least one sound outlet connected to the first receiving cavity.

[0024] In some embodiments of the present invention, the sound outlet is provided on a side wall of the first shell or the second shell, and the first sound outlet channel and the second sound outlet channel are respectively connected to the sound outlet.

[0025] In some embodiments of the present invention, the sound outlet includes a first sound outlet and a second sound outlet, the first sound outlet is provided on the side wall of the first shell or the second shell, the second sound outlet is provided on the side wall of the first shell opposite to the second vibration system, the first sound outlet is connected to the second sound outlet channel, the second sound outlet is connected to the first sound outlet channel, and the first sound outlet channel and the second sound outlet channel are not connected to each other.

[0026] In some embodiments of the present invention, a second receiving cavity is further formed inside the shell, and the second receiving cavity is provided with sound-absorbing particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0028] Figure 1 It is a schematic diagram of the front structure of the sound-generating device in some embodiments of the present application;

[0029] Figure 2 for Figure 1 A schematic diagram of the back structure of the sound-generating device;

[0030] Figure 3 for Figure 2 A schematic structural diagram of the back side of the sound-generating device from another angle;

[0031] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA;

[0032] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0033] Figure 6 for Figure 3 Schematic diagram of the structure of the first diaphragm;

[0034] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of the CC;

[0035] Figure 8 for Figure 7 The enlarged structural diagram of the middle D part;

[0036] Fig. 9 for Figure 4 A schematic diagram of the connection structure between the first vibration system and the first support member;

[0037] Fig.10 for Fig. 9 A schematic structural diagram of the first support member;

[0038] Fig.11 for Fig. 9 A schematic diagram of the structure of the first centering support piece;

[0039] Fig.12 for Fig. 9 A schematic structural diagram of a first centering support piece having a first welding portion;

[0040] Fig.13 for Fig. 9 A schematic structural diagram of another embodiment of a first centering support having a first welding portion;

[0041] Fig.14 for Figure 2 Schematic diagram of the structure of the second diaphragm;

[0042] Fig.15 for Fig.14 Schematic diagram of the cross-sectional structure of EE in FIG.

[0043] Fig.16 for Figure 2 Schematic diagram of the structure after removing the second diaphragm;

[0044] Fig.17 for Figure 3 A schematic diagram of the structure after removing the first diaphragm and the second yoke;

[0045] Fig.18 for Figure 3 A schematic diagram of the structure at another angle after removing the first diaphragm and the second yoke;

[0046] Fig.19 for Figure 4 A schematic diagram of the connection structure between the second vibration system and the second support member;

[0047] Fig. 20 for Fig.19 A schematic structural diagram of the second supporting member;

[0048] Fig.21 for Fig.19 A schematic diagram of the structure of the second centering support piece;

[0049] Fig. 22 for Fig.19 A schematic diagram of the structure of the second lead-out portion;

[0050] Fig.23 To have Figure 1 A schematic cross-sectional structure diagram of an electronic device of a sound generating device;

[0051] Fig.24 To have Figure 1 A schematic cross-sectional structure diagram of another embodiment of an electronic device having a sound-emitting device.

[0052] The reference numerals in the accompanying drawings represent the following:

[0053] 1: Sound-generating device;

[0054] 10: The first sound unit;

[0055] 11: first vibration system, 111: first diaphragm, 1111: first inner folding ring portion, 1112: first middle portion, 1113: first outer folding ring portion, 1114: first inner fixing portion, 1115: first outer fixing portion, 112: first dome, 113: first voice coil;

[0056] 12: first magnetic circuit system, 121: first magnetic yoke, 122: first outer magnet, 123: first inner magnet, 124: first outer magnetic conductive plate, 125: first inner magnetic conductive plate, 1251: bending portion;

[0057] 13: first support member, 131: first extension end, 132: second extension end, 133: first protrusion;

[0058] 14: first centering support piece, 141: first outer connecting portion, 142: first inner connecting portion, 143: first elastic portion, 144: first welding portion, 145: first lead-out portion;

[0059] 20: second sound unit;

[0060] 21: second vibration system, 211: second diaphragm, 2111: second folding ring portion, 2112: second middle portion, 2113: second fixing portion, 212: second dome, 213: second voice coil;

[0061] 22: second magnetic circuit system, 221: second magnetic yoke, 222: second outer magnet, 223: second inner magnet, 224: second inner magnetic conductive plate;

[0062] 23: second support member, 231: main body, 232: extension portion, 233: second protrusion, 234: third protrusion, 235: connecting member;

[0063] 24: second centering support piece, 241: second outer connecting portion, 242: second inner connecting portion, 243: second elastic portion;

[0064] 251: second welding portion, 252: second lead-out portion;

[0065] 3: Shell;

[0066] 31: first receiving cavity, 311: first shell, 3111: first sound outlet channel, 312: second shell, 3121: second sound outlet channel, 313: side wall, 3131: sound outlet, 3132: guide surface, 32: second receiving cavity;

[0067] 4: Casing. DETAILED DESCRIPTION

[0068] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0069] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0070] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0071] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0072] As electronic devices are becoming increasingly lightweight, while ensuring the sound quality of the sound device, more attention is paid to reducing the size of the sound device, so as to facilitate the installation of the sound device and make the electronic device lighter. In a first aspect of the present application, a sound device is provided for use in an electronic device, so that the electronic device can make a sound.

[0073] Combination Figures 1 to 5 As shown, in some embodiments of the present application, the sound-generating device 1 includes a first sound-generating unit 10 and a second sound-generating unit 20. The first sound-generating unit 10 includes a first vibration system 11 and a first magnetic circuit system 12 matched with the first vibration system 11. The second sound-generating unit 20 includes a second vibration system 21 and a second magnetic circuit system 22 matched with the second vibration system 21. The first vibration system 11 is arranged around the second magnetic circuit system 22, the first magnetic circuit system 12 is arranged around the second vibration system 21, and the first magnetic circuit system 12 and the second magnetic circuit system 22 are staggered along the common vibration direction of the first vibration system 11 and the second vibration system 21.

[0074] Specifically, Figure 4 and Figure 5 As shown, the first vibration system 11 is stacked on top of the first magnetic circuit system 12, the second magnetic circuit system 22 is stacked on top of the second vibration system 21, the first vibration system 11 is arranged around the second magnetic circuit system 12, and the first magnetic circuit system 12 is arranged around the second vibration system 21, so that the second sound unit 20 is arranged as a whole inside the first sound unit 10, and the double-sided sound of the sound device 1 is achieved through the first vibration system 11 and the second vibration system 21.

[0075] According to the sound-emitting device 1 of the present invention, a first sound-emitting unit 10 and a second sound-emitting unit 20 are arranged, and the first vibration system 11 of the first sound-emitting unit 10 is arranged around the second magnetic circuit system 22 of the second sound-emitting unit 20, and the first magnetic circuit system 12 of the first sound-emitting unit 10 is arranged around the second vibration system 21 of the second sound-emitting unit 20, and the first magnetic circuit system 12 and the second magnetic circuit system 22 are staggered along the common vibration direction of the first vibration system 11 and the second vibration system 12, so that the first sound-emitting unit 10 is sleeved on the outside of the second sound-emitting unit 20, and while the sound-emitting device 1 realizes double-sided generation, the overall thickness of the first sound-emitting unit 10 and the second sound-emitting unit 20 in the vibration direction is effectively reduced, thereby reducing the overall thickness of the sound-emitting device 1, facilitating the assembly of the sound-emitting device 1 while ensuring the sound performance of the sound-emitting device 1.

[0076] Specifically, Figures 4 to 8 As shown, in some embodiments of the present application, the first vibration system 11 includes a first diaphragm 111, a first dome 112 and a first voice coil 113. The first diaphragm 111 is an annular diaphragm. The first diaphragm 111 includes a first inner folding ring portion 1111, a first middle portion 1112 and a first outer folding ring portion 1113. The first inner folding ring portion 1111 and the first outer folding ring portion 1113 are arranged at intervals and connected through the first middle portion 1112. The first dome 112 is fixed to the first middle portion 1112. Further, the first dome 112 is connected to the surface of the first middle portion 1112 facing the first magnetic circuit system 12. One end of the first voice coil 113 is connected to the first dome 112, and the other end of the first voice coil 113 is inserted into the first magnetic gap of the first magnetic circuit system 12.

[0077] Specifically, combined Figures 4 to 8 As shown, in some embodiments of the present application, the first diaphragm 111 includes a first inner folding ring portion 1111, a first middle portion 1112 and a first outer folding ring portion 1113 which are arranged in sequence from the inside to the outside, the first inner folding ring portion 1111 and the first outer folding ring portion 1113 are connected via the first middle portion 1112, the first middle portion 1112 is provided with a first spherical top 112 on the lower surface facing the first magnetic circuit system 12, the top end of the first voice coil 113 is connected to the first spherical top 112, and the bottom end of the first voice coil 113 is inserted into the first magnetic gap with the first magnetic circuit system.

[0078] By inserting the bottom end of the first voice coil 113 into the first magnetic gap of the first magnetic circuit system 12, when the first voice coil 113 is energized, the first voice coil 113 can vibrate up and down along its own axis under the action of the first magnetic circuit system 12, and directly drive the first dome 112 to vibrate, thereby vibrating and making sound.

[0079] Combination Figures 4 to 8As shown, in some embodiments of the present application, the first inner folding ring portion 1111 and the first outer folding ring portion 1113 are both arranged to protrude toward the direction of the first magnetic circuit system 12 .

[0080] That is, the first inner folding ring portion 1111 and the first outer folding ring portion 1113 are both protruded toward the interior of the first sound unit 10, thereby further reducing the external thickness of the first sound unit 10, and the first inner folding ring portion 1111 and the first outer folding ring portion 1113 are hidden inside the first sound unit 10 with sufficient vibration space, thereby further reducing the overall thickness of the sound device 1.

[0081] Combination Figure 4 and Figure 5 As shown, in some embodiments of the present application, the first magnetic circuit system 12 includes a first magnetic yoke 121 and a first outer magnet 122 and a first inner magnet 123 arranged on the first magnetic yoke 121, and the surface of the first outer magnet 122 facing the first vibration system 11 is also provided with a first outer magnetic conductive plate 124, and the surface of the first inner magnet 123 facing the first vibration system 11 is also provided with a first inner magnetic conductive plate 125, and a first magnetic gap is formed between the first outer magnetic conductive plate 124, the first outer magnet 122, the first inner magnetic conductive plate 125 and the first inner magnet 123.

[0082] Specifically, in some embodiments of the present application, the first magnetic yoke 121 is a rectangular ring structure, and a central opening is provided in the center for the second vibration system 21 to vibrate. The first outer magnet 122 and the first inner magnet 123 are both connected to the first magnetic yoke 121 by adhesive bonding. Figure 4 The first outer magnetic conductive plate 124 and the first inner magnetic conductive plate 125 are respectively attached to the upper surfaces of the first outer magnet 122 and the first inner magnet 123, so as to enhance the magnetic conductivity of the first outer magnet 122 and the first inner magnet 123, respectively.

[0083] Among them, the number of the first outer magnet 122 and the first inner magnet 123 is multiple, specifically four respectively, and the four first outer magnets 122 form a rectangular structure and are arranged on the outside of the rectangular structure formed by the four first inner magnets 123, thereby forming a first magnetic gap for inserting the first voice coil 113.

[0084] By inserting the end of the first voice coil 113 into the first outer magnetic conductive plate 124, the first outer magnet 122 and the first inner magnetic conductive plate 125, the first inner magnet 123 to form a first magnetic gap, when the first voice coil 113 vibrates, not only a balanced magnetic driving force can be obtained, but also the vibration space can be fully utilized.

[0085] In some embodiments of the present application, the first sound unit 10 also includes a first support member 13, the first support member 13 is connected to the first magnetic circuit system 12, the outer edge of the first diaphragm 111 is connected to the first support member 13, and the inner edge of the first diaphragm 111 is connected to the second magnetic circuit system 22.

[0086] Combination Figures 4 to 8 As shown, in some embodiments of the present application, the first diaphragm 111 further includes a first inner fixing portion 1114 and a first outer fixing portion 1115. The first inner fixing portion 1114 is connected to the first inner folding ring portion 1111 and is arranged around the inner edge of the first diaphragm 111. The first outer fixing portion 1115 is connected to the first outer folding ring portion 1113 and is arranged around the outer edge of the first diaphragm 111. The first inner fixing portion 1114 is used to connect to the second magnetic circuit system 22, and the first outer fixing portion 1115 is used to connect to the first support member 13, so that the first diaphragm 111 is fixedly arranged above the first magnetic circuit system 12.

[0087] Furthermore, in some embodiments of the present application, the first diaphragm 111 is an integral injection-molded part, which can effectively improve the overall strength of the first diaphragm 111 and ensure the vibration effect while avoiding separation from the first dome 112 during the vibration process.

[0088] Furthermore, if Figure 4 and Figure 5 As shown, along Figure 4 In the vertical direction, that is, along the common vibration direction of the first vibration system 11 and the second vibration system 21 , the spacing dimension between the first inner fixed portion 1114 and the first magnetic circuit system 12 is greater than the spacing dimension between the first middle portion 1112 and the first magnetic circuit system 12 .

[0089] Since the first internal fixed portion 1114 is connected to the second magnetic circuit system 12, the second magnetic circuit system 12 is located as a whole above the first vibration system 11 to form a step surface structure. When the sound-emitting device 1 is installed on the shell through the second magnetic circuit system 12, the second magnetic circuit system 12 is connected to the inner surface of the shell, and a certain gap is formed between the first middle portion 11 and the shell, thereby forming a sound outlet channel and generating sound without further changing the structure of the shell.

[0090] Combination Figure 4 , Figure 5 and Fig. 9 As shown, in some embodiments of the present application, the first sound unit 10 further includes a first centering arm assembly, and the other end of the first voice coil 113 is connected to the first support member 13 through the first centering arm assembly.

[0091] Specifically, in some embodiments of the present application, the top end of the first voice coil 113 is connected to the first ball top 112, and the bottom end of the first voice coil 113 is connected to the first centering support plate assembly, thereby fixing the two ends of the first voice coil 113 to ensure that the first voice coil 113 vibrates up and down in the first magnetic gap.

[0092] In some embodiments of the present application, the first centering support plate assembly includes at least two first centering support plates 14, and the at least two first centering support plates 14 are arranged along at least one diagonal of the first support member 13, and the two ends of any first centering support plate 14 are respectively used to connect the first voice coil 113 and the first support member 13.

[0093] Combination Figure 4 , Fig. 9 and Fig.10 As shown, in some embodiments of the present application, the first support member 13 is a generally rectangular ring structure, and a central opening is provided at the center thereof for the first vibration system 11 to vibrate. Among them, the first support member 13 is provided with a first protruding end 131 facing the first magnetic yoke 121, and the first protruding end 131 can be engaged with the first magnetic yoke 121, so as to fix the first magnetic circuit system 11 and the first vibration system 12. The inner edge of the first support member 13 is also provided with a second protruding end 132, and a step surface is formed between the second protruding end 132 and the inner wall surface of the first support member 13, and is fitted to the surface of the first outer magnetic conductive plate 124, so that the fitting area between the first diaphragm 111 and the first support member 13 is increased by the provision of the second protruding end 132, and the fixing strength of the first diaphragm 111 is ensured.

[0094] Furthermore, in some embodiments of the present application, the outer edge of the first diaphragm 111 is connected to the first support member 13 by gluing, hot pressing or integral injection molding, thereby effectively improving the connection strength between the first diaphragm 111 and the first support member 13 .

[0095] In some embodiments of the present application, the first centering support 14 is disposed at any two opposite corners of the first support member 13, that is, at the junction of the long side and the short side, so as to ensure the support strength of the first voice coil 113. Fig. 9 As shown, in some embodiments of the present application, the number of the first centering supports 14 is four, and the four first centering supports 14 are arranged along two diagonal corners of the first support member 13, so as to further ensure the supporting strength of the first voice coil 113.

[0096] Combination Fig. 9 and Fig.11As shown, in some embodiments of the present application, the first centering support piece 14 includes a first external connection portion 141, a first internal connection portion 142 and a first elastic portion 143, the first external connection portion 141 is connected to the first support member 13, the first internal connection portion 142 is connected to the first voice coil 113, the first elastic portion 143 connects the first external connection portion 141 and the first internal connection portion 142, and the first elastic portion 143 includes at least one arc segment.

[0097] In some embodiments of the present application, the number of arc segments of the first elastic portion 143 is one, and the bending shape of one arc segment is similar to the bending shape at the corner of the first support member 13 and the first voice coil 113, thereby ensuring the vibration of the first centering support plate 14 without additionally increasing the spacing dimension between the first support member 13 and the first voice coil 113, thereby ensuring the space required for the normal vibration process of the first centering support plate 14, and further reducing the overall size of the sound-emitting device 1.

[0098] Combination Figure 2 , Fig.12 and Fig.13 As shown, in some embodiments of the present application, the first centering support piece 14 further includes a first welding portion 144 and a first lead-out portion 145 .

[0099] In some embodiments of the present application, the first lead-out portion 145 is a part of the structure of the first centering support 14 and is connected to the first external connection portion 141. The first welding portion 144 is provided on the first lead-out portion 145 and is also a part of the structure of the first centering support 14. The first welding portion 144 is provided on the outside of the assembled sound-generating device 1, and the external power supply circuit can be connected to the first centering support 14 through the first welding portion 144, so as to supply power to the first centering support 14, and then supply power to the first voice coil 113, so as to drive the first voice coil 113 to vibrate along the axial direction.

[0100] In some embodiments of the present application, the number of the first lead-out portions 145 is two, and the two first lead-out portions 145 are respectively integrated with two adjacent first centering supports 14 .

[0101] In some embodiments of the present application, the first lead-out portion 145 having the first welding portion 144 is independently provided and connected to the first centering support plate 14 by welding or other electrical connections, thereby supplying power to the first centering support plate 14 and the first voice coil 113 .

[0102] Combination Figure 4 , Figure 5 , Fig.14 and Fig.15As shown, in some embodiments of the present application, the second vibration system 21 includes a second diaphragm 211, a second dome 212, and a second voice coil 213. The second diaphragm 211 is a planar diaphragm. The second diaphragm 211 includes a second folding ring portion 2111 and a second middle portion 2112. The second dome 212 is fixed to the second middle portion 2112. Further, the second dome 212 is connected to the surface of the second middle portion 2112 facing the second magnetic circuit system 22. One end of the second voice coil 213 is connected to the second dome 212, and the other end of the second voice coil 213 is inserted into the second magnetic gap of the second magnetic circuit system 22.

[0103] By inserting the bottom end of the second voice coil 213 into the second magnetic gap of the second magnetic circuit system 22, when the second voice coil 213 is energized, the second voice coil 213 can vibrate up and down along its own axis under the action of the second magnetic circuit system 22, and directly drive the second dome 212 to vibrate at the same time, thereby vibrating and making sound.

[0104] Combination Figure 4 , Figure 5 , Fig.14 and Fig.15 As shown, in some embodiments of the present application, the second folding ring portion 2111 is protruding toward the direction of the second magnetic circuit system 22 .

[0105] In some embodiments of the present application, the second folding ring portion 2111 is protruded toward the interior of the second sound unit 20, thereby further reducing the external thickness of the second sound unit 20, hiding the second folding ring portion 2111 inside the second sound unit 20, and having sufficient vibration space, thereby further reducing the overall thickness of the sound device 1.

[0106] Combination Figure 4 , Figure 5 , Fig.16 , Fig.17 and Fig.18 As shown, in some embodiments of the present application, the second magnetic circuit system 22 includes a second magnetic yoke 221 and a second outer magnet 222 and a second inner magnet 223 arranged on the second magnetic yoke 221, and the surface of the second inner magnet 223 facing the second vibration system 21 is also provided with a second inner magnetic conductive plate 224, and the surface of the second outer magnet 222 facing the second vibration system 21 is also provided with a second outer magnetic conductive plate, and a second magnetic gap is formed between the second outer magnetic conductive plate, the second outer magnet 222, the second inner magnetic conductive plate 224, and the second inner magnet 223.

[0107] In some embodiments of the present application, the second magnetic yoke 221 is a rectangular structure, and the second inner magnet 223 and the second outer magnet 222 are both connected to the second magnetic yoke 221 by gluing. Figure 4The lower surface shown in the figure, wherein the second inner magnet 223 is arranged at the center of the second magnetic yoke 221, and a plurality of second outer magnets 222 of strip-shaped structures are arranged around the second inner magnet 223. The second outer magnetic conductive plate 224 and the second inner magnetic conductive plate 224 are respectively attached to the lower surfaces of the second outer magnet 222 and the second inner magnet 223, so as to respectively enhance the magnetic conductivity of the second outer magnet and the second inner magnet 223.

[0108] By inserting the end of the second voice coil 213 into the second magnetic gap formed between the second outer magnetic conductive plate, the second outer magnet 222 and the second inner magnetic conductive plate 224, the second inner magnet 223, when the second voice coil 213 vibrates, not only a balanced magnetic driving force can be obtained, but also the vibration space can be fully utilized.

[0109] In some embodiments of the present application, the second outer magnetic conductive plate is connected to the first inner magnetic conductive plate 125, or the second outer magnetic conductive plate and the first inner magnetic conductive plate 125 are the same magnetic conductive plate. Figure 4 and Figure 5 As shown, the second outer magnetic conductive plate and the first inner magnetic conductive plate 125 are the same magnetic conductive plate. Taking the first inner magnetic conductive plate 125 as an example, the lower surface of the first inner magnetic conductive plate 125 is connected to the first inner magnet 123, and the upper surface of the first inner magnetic conductive plate 125 is connected to the second outer magnet 222, so that the first inner magnet 123 and the second outer magnet 222 are connected at the same time through the first inner magnetic conductive plate 125, while effectively enhancing the magnetic conductive effect, ensuring that the first inner magnet 123 and the second outer magnet 222 are staggered along the axial direction, and will not shift during vibration. At the same time, the first magnetic circuit system 12 and the second magnetic circuit system 22 are connected into a whole, so as to facilitate subsequent assembly. Among them, the connection between the magnetic conductive plate and the magnet, and the connection between the magnet and the magnetic yoke can be glued.

[0110] Furthermore, combined with Figure 4 and Figure 5 As shown, in some embodiments of the present application, the second outer magnetic conductive plate is provided with a bending portion 1251 bent toward the second vibration system 21, and the bending portion 1251 is arranged opposite to the second inner magnetic conductive plate 224, so that the second voice coil 213 is inserted between the second inner magnetic conductive plate 224 and the bending portion 1251, so that the magnetic field force received by the second voice coil 213 is stronger and the vibration effect is more obvious, thereby improving the generation quality.

[0111] Combination Figure 4 , Fig.18 , Fig.19 and Fig. 20 As shown, in some embodiments of the present invention, the second sound unit 20 further includes a second support member 23, the second support member 23 is connected to the second magnetic circuit system 22, and both ends of the second support member 23 are respectively connected to the second diaphragm 211 and the second outer magnetic conductive plate.

[0112] In some embodiments of the present invention, the second support member 23 includes a main body 231 and an extension 232. The main body 231 is a generally rectangular ring-shaped structure, and a central opening is provided in the center thereof for the second vibration system 21 to vibrate. The inner edge of the main body 231 is provided with an extension 232 extending inwardly, and the support area of ​​the second outer magnetic conductive plate can be increased by the provision of the extension 232. Since in some embodiments of the present application, the second outer magnetic conductive plate and the first inner magnetic conductive plate 125 are the same magnetic conductive plate, the support area of ​​the first inner magnetic conductive plate 125 can be increased by the provision of the extension 232, and the second outer magnet 222 is supported by the first inner magnetic conductive plate 125. At the same time, a step-shaped structure is formed between the extension 232 and the inner wall surface of the main body 231, and the second folding ring portion 2111 is provided in the step surface structure formed by the extension 232 and the main body 231, so as to prevent interference with the second folding ring portion 2111 during vibration.

[0113] In combination Figure 4 and Fig. 20 As shown, the main body 231 is as shown in Figure 4 The bottom surface of the main body 231 is provided with four second protrusions 233, and the four second protrusions 233 are arranged along the four diagonal corners of the main body 231, so that a groove for mounting the second diaphragm 211 is formed between the four second protrusions 233, and the second diaphragm 211 is fixed in the groove surrounded by the four second protrusions 233. Figure 4 Four third protrusions 234 are provided at the four diagonals of the top surface at the position shown. The four third protrusions 233 on the top surface are used to connect the second centering support plate assembly. At the same time, the portion of the first inner magnetic conductive plate 125 corresponding to the second outer magnet 222 is connected to the portion of the main body 231 provided between any two adjacent third protrusions 234, thereby fixing the second vibration system 21 below the second magnetic circuit system 22 through the second support member 23.

[0114] Furthermore, in some embodiments of the present application, the outer edge of the second diaphragm 211 is connected to the second support member 23 by gluing, hot pressing or integral injection molding.

[0115] Recombination Figure 4 , Fig.14 and Fig.15 As shown, the second diaphragm 211 is further provided with a second fixing portion 2113 , which is provided at the outer edge of the second diaphragm 211 and connected to the second folding ring portion 2111 , and the second diaphragm 211 is connected to the second support member 23 via the second fixing portion 2113 .

[0116] In some embodiments of the present application, the second diaphragm 211 is an integral injection-molded part, which can effectively improve the overall strength of the second diaphragm 211 and ensure the vibration effect while avoiding separation from the second dome 212 during the vibration process.

[0117] Combination Fig.19 and Fig. 20 As shown, in some embodiments of the present application, the second sound unit 20 further includes a second centering arm assembly, and the other end of the second voice coil 213 is connected to the second support member 23 via the second centering arm assembly.

[0118] Specifically, in some embodiments of the present application, the top end of the second voice coil 213 is connected to the second ball top 212, and the bottom end of the second voice coil 213 is connected to the second centering support plate assembly, thereby fixing the two ends of the second voice coil 213 to ensure that the second voice coil 213 vibrates up and down in the second magnetic gap.

[0119] Since in some embodiments of the present application, the first centering support plate assembly and the second centering support plate assembly are staggered along the vibration direction, the first centering support plate assembly and the second centering support plate assembly can be used to support the vibration of the first voice coil 113 and the second voice coil 213, respectively, thereby avoiding the disadvantage that the two annular voice coils are nested with each other and the support plates cannot be provided to support the internal voice coils. At the same time, there is no need to provide a connecting piece between the first voice coil 113 and the second voice coil 213, thereby reducing the mass of the first vibration system 11 and the second vibration system 21, and improving the vibration efficiency of the first voice coil 113 and the second voice coil 213.

[0120] In some embodiments of the present application, the second centering support plate assembly includes at least two second centering support plates 24, and the at least two second centering support plates 24 are arranged along at least one diagonal of the second support member 23, and the two ends of any second centering support plate 24 are respectively used to connect the second voice coil 213 and the second support member 23.

[0121] In some embodiments of the present application, the second centering support piece 24 is disposed at any two opposite corners of the second support member 23, that is, at the junction of the long side and the short side, so as to ensure the support strength of the second voice coil 213. Fig.19 As shown, the number of the second centering arms 24 is four, and the four second centering arms 24 are arranged along two diagonal corners of the second support member 23 , thereby further ensuring the supporting strength of the second voice coil 213 .

[0122] Combination Fig.19 and Fig.21As shown, in some embodiments of the present application, the second centering support piece 24 includes a second outer connecting portion 241, a second inner connecting portion 242 and a second elastic portion 243, the second outer connecting portion 241 is connected to the second support member 23, the second inner connecting portion 242 is connected to the second voice coil 213, the second elastic portion 243 connects the second outer connecting portion 241 and the second inner connecting portion 242, and the second elastic portion 243 includes at least one arc segment.

[0123] Specifically, in some embodiments of the present application, the number of arc segments of the second elastic portion 243 is two, and the bending shape of any one of the two arc segments matches the shape of the corners of the second support member 23 and the second voice coil 213, thereby ensuring the vibration of the second centering support piece 24 without additionally increasing the spacing between the second support member 23 and the second voice coil 2123, thereby ensuring the normal vibration process of the second centering support piece 24.

[0124] Combination Figure 2 and Fig. 22 As shown, in some embodiments of the present application, the second sound unit 20 further includes a second welding portion 251 and a second lead-out portion 252 .

[0125] Specifically, in some embodiments of the present application, in order to facilitate the arrangement of the second lead-out portion 252 and the second centering support piece 24, the second lead-out portion 252 and the second centering support piece 24 are independent structures and are connected through a connector 235. The connector 235 is inserted into the mounting groove of the main body 231 of the second support member 23. Specifically, the mounting groove penetrates the second protrusion 233 and the third protrusion 234. The two ends of the connector are respectively flush with the end surfaces of the second protrusion 233 and the third protrusion 234 on both sides of the main body 231, or slightly protrude from the end surfaces of the second protrusion 233 and the third protrusion 234. The top end of the connector 235 is connected to the second centering support piece 24, and the bottom end of the connector 235 is connected to the second lead-out portion 252. The second welding portion 251 is led out to the outside of the sound-generating device 1 through the arrangement of the second lead-out portion 252, so as to be connected to an external power supply, thereby supplying power to the second centering support piece 24 and the second voice coil 213.

[0126] In some embodiments of the present application, the number of the second lead-out portion 252 is one, and one second lead-out portion 252 is simultaneously connected to two adjacent second centering supports 24 .

[0127] Recombination Fig.10 and Fig.16As shown, in some embodiments of the present application, the first support member 13 is further provided with a first protrusion 133, the first protrusion 133 is protruding from the bottom surface of the first support member 13, and a portion of the second lead-out portion 252 having the second welding portion 251 is provided on the first protrusion 133. The first lead-out portion 145 having the first welding portion 144 is provided on the bottom surface of the first support member 13, so that the first welding portion 144 and the second welding portion 251 form a staggered structure along the vibration direction, thereby facilitating connection with an external power source respectively.

[0128] Combination Figure 2 , Figure 5 and Fig.23 As shown, another aspect of the present application also proposes an electronic device, which has a shell 3 and a sound-generating device 1 disposed in the shell 3. A first receiving cavity 31 is formed inside the shell 3, and the sound-generating device 1 is disposed in the first receiving cavity 31. The shell 3 includes a first shell 311 and a second shell 312 that are arranged opposite to each other, the first magnetic circuit system 12 of the sound-generating device 1 is connected to the first shell 311, the second magnetic circuit system 22 of the sound-generating device 1 is connected to the second shell 312, a first sound outlet channel 3111 is formed between the second vibration system 21 and the first shell 311, and a second sound outlet channel 3121 is formed between the first vibration system 11 and the second shell 312, and at least one sound outlet connected to the first receiving cavity 31 is provided on the shell 3.

[0129] Combination Figure 2 , Figure 5 and Fig.23 As shown, in some embodiments of the present application, the housing 3 includes a first housing 311 and a second housing 312 that are interlocked, and the first housing 311 or the second housing 312 is connected to the inner wall surface of the housing 4 of the electronic device, so that the housing 3 with the sound-emitting device 1 is fixed inside the housing 4. Specifically, the first housing 311 is provided at the bottom of the housing 3, the second housing 312 is provided at the top of the housing 3 and connected to the housing 4, the first yoke 121 of the sound-emitting device 1 is connected to the first housing 311, and a first sound outlet channel 3111 is formed between the second vibration system 21 and the first housing 311, and the second yoke 221 of the sound-emitting device 1 is connected to the second housing 312, and a second sound outlet channel 3121 is formed between the first vibration system 11 and the second housing 312, so that double-sided sound is formed inside the housing 3. At the same time, at least one first sound outlet 3131 is provided on the side wall 313 of the first shell 311, and the first sound outlet channel 3111 and the second sound outlet channel 3121 are respectively connected to the first sound outlet 3131, so that the sound of the first vibration system 11 and the sound of the second vibration system 21 can flow out to the outside of the shell 3 through the first sound outlet 3131.

[0130] Combination Figure 2 , Figure 5 and Fig.23 As shown, at least a portion of the plate surface of the first yoke 121 facing the first housing 311 is spaced from the first housing 311, thereby forming a first sound outlet channel 3111 between the second vibration system 21 and the first housing 311. At the same time, in some embodiments of the present application, the spacing dimension between the first inner fixing portion 1114 and the first magnetic circuit system 12 is greater than the spacing dimension between the first middle portion 1112 and the first magnetic circuit system 12. Since the first inner fixing portion 1114 is connected to the second magnetic circuit system 22, the second magnetic circuit system 22 is located above the first magnetic circuit system 12 as a whole, forming a staggered structure, and forming a second sound outlet channel 3121 between the first vibration system 11 and the second housing 312.

[0131] Combination Figure 2 , Figure 5 and Fig.23 As shown, in some embodiments of the present application, a guide surface 3132 surrounding the first sound outlet 3131 is provided on the side wall 313 where the first sound outlet 3131 is located, and the radial dimension of the guide surface 3132 gradually decreases along the sound outlet direction of the sound outlet 3131. By setting the guide surface 3132, the sound quality of the sound-emitting device 1 can be effectively improved.

[0132] like Fig.23 As shown, in some embodiments of the present application, a second receiving cavity 32 is further formed inside the shell 3 , the second receiving cavity 32 is arranged side by side with the first receiving cavity 31 , and the second receiving cavity 32 is provided with sound-absorbing particles.

[0133] Combination Figure 2 , Figure 5 and Fig.23 As shown, the sound-emitting device 1 is arranged in the first receiving cavity 31, and blocks the connecting port between the first receiving cavity 31 and the second receiving cavity 32. By providing sound-absorbing particles in the second receiving cavity 32, the noise generated when the first sound-emitting unit 10 and the second sound-emitting unit 20 vibrate and emit sound can be reduced or eliminated, thereby improving the sound quality of the sound-emitting device 1.

[0134] Combination Figure 2 , Figure 5 and Fig.24As shown, in some embodiments of the present application, the sound outlet includes a first sound outlet 3131 and a second sound outlet 3133, the first sound outlet 3131 is provided on the side wall of the first shell 311 or the second shell 312, the second sound outlet 3133 is provided on the side wall of the first shell 311 and the second vibration system 21, the first sound outlet 3131 is connected to the second sound outlet channel 3121, the second sound outlet 3133 is connected to the first sound outlet channel 3111, and the first sound outlet channel 3111 and the second sound outlet channel 3121 are not connected to each other. Specifically, the first magnetic circuit system 12 is connected to the inner wall surface of the first shell 311, and the first sound outlet channel 3111 is formed between the second vibration system 21 and the first shell 311, the second magnetic circuit system 22 is connected to the inner wall surface of the second shell 312, and the second sound outlet channel 3121 is formed between the first vibration system 11 and the second shell 312, and the first sound outlet channel 3111 and the second sound outlet channel 3121 are not connected to each other. The first sound outlet channel 3111 emits sound through the second sound outlet 3133 , and the second sound outlet channel 3121 emits sound through the first sound outlet 3131 , thereby achieving multi-faceted sound emission of the housing 3 .

[0135] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A sound-generating device, characterized in that: include: A first sound-generating unit, the first sound-generating unit comprising a first vibration system and a first magnetic circuit system matched with the first vibration system, the first vibration system at least comprising a first voice coil; A second sound-generating unit, the second sound-generating unit comprising a second vibration system and a second magnetic circuit system matched with the second vibration system, the second vibration system at least comprising a second voice coil; a first support member, the first vibration system is fixed to the first support member, and the first voice coil is connected to the first support member via a first centering support assembly; A second support member, the second vibration system is fixed to the second support member, and the second voice coil is connected to the second support member via a second centering support assembly; The first vibration system is arranged around the second magnetic circuit system, the first magnetic circuit system is arranged around the second vibration system, and along the common vibration direction of the first vibration system and the second vibration system, the first magnetic circuit system and the second magnetic circuit system are staggered, and the first centering support piece assembly and the second centering support piece assembly are staggered; The first vibration system is stacked on top of the first magnetic circuit system, and the second magnetic circuit system is stacked on top of the second vibration system. The first vibration system and the second vibration system enable the sound-generating device to generate sound on both sides.

2. The sound generating device according to claim 1, characterized in that: The first centering support plate assembly includes at least two first centering support plates, and the at least two first centering support plates are arranged along at least one diagonal of the first support member, and two ends of any first centering support plate are respectively used to connect the first voice coil and the first support member.

3. The sound-generating device according to claim 2, characterized in that: The number of the first centering support plates is four, and the four first centering support plates are arranged along two diagonal corners of the first support member.

4. The sound-generating device according to claim 2, characterized in that: The first centering support plate includes a first external connection part, a first internal connection part and a first elastic part, the first external connection part is connected to the first support member, the first internal connection part is connected to the first voice coil, the first elastic part connects the first external connection part and the first internal connection part, and the first elastic part includes at least one arc segment.

5. The sound generating device according to claim 2, characterized in that: The first centering support piece assembly includes at least one first welding portion, wherein the first welding portion is connected to the first centering support piece, or the first welding portion is a part of the first centering support piece.

6. The sound generating device according to claim 1, characterized in that: The second centering support plate assembly includes at least two second centering support plates, and the at least two second centering support plates are arranged along at least one diagonal of the second support member, and two ends of any second centering support plate are respectively used to connect the second voice coil and the second support member.

7. The sound generating device according to claim 6, characterized in that: The number of the second centering support plates is four, and the four second centering support plates are arranged along two diagonal corners of the second support member.

8. The sound generating device according to claim 6, characterized in that: The second centering support includes a second outer connecting portion, a second inner connecting portion and a second elastic portion, the second outer connecting portion is connected to the second support member, the second inner connecting portion is connected to the second voice coil, the second elastic portion connects the second outer connecting portion and the second inner connecting portion, and the second elastic portion includes at least one arc segment.

9. The sound generating device according to claim 8, characterized in that: The second elastic portion includes two arc segments, and the bending directions of the two arc segments are consistent.

10. The sound generating device according to claim 6, characterized in that: The second centering support piece assembly includes at least one second welding portion, wherein the second welding portion is connected to the second centering support piece, or the second welding portion is a part of the second centering support piece.

11. An electronic device, characterized in that: The electronic device has a sound generating device according to any one of claims 1 to 10, and further comprises: A shell, wherein a first receiving cavity is formed inside the shell, and the sound-generating device is arranged in the first receiving cavity, wherein the shell includes a first outer shell and a second outer shell arranged opposite to each other, the first magnetic circuit system of the sound-generating device is connected to the first outer shell, the second magnetic circuit system of the sound-generating device is connected to the second outer shell, a first sound outlet channel is formed between the second vibration system and the first outer shell, a second sound outlet channel is formed between the first vibration system and the second outer shell, and the shell is also provided with at least one sound outlet connected to the first receiving cavity.

12. The electronic device according to claim 11, characterized in that: The sound outlet is provided on the side wall of the first shell or the second shell, and the first sound outlet channel and the second sound outlet channel are respectively connected to the sound outlet.

13. The electronic device according to claim 11, characterized in that: The sound outlet includes a first sound outlet and a second sound outlet. The first sound outlet is provided on the side wall of the first shell or the second shell, and the second sound outlet is provided on the side wall of the first shell opposite to the second vibration system. The first sound outlet is connected to the second sound outlet channel, and the second sound outlet is connected to the first sound outlet channel. The first sound outlet channel and the second sound outlet channel are not connected to each other.

14. The electronic device according to claim 11, characterized in that: A second receiving cavity is also formed inside the shell, and the second receiving cavity is provided with sound-absorbing particles.

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