Vibration sound production device and electronic equipment

Abstract

The invention discloses a vibration sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, and a first vibration system and a second vibration system of the vibration sound production device are located at two sides of a magnetic circuit system along a first direction. A common magnetic part, two side magnetic parts and two central magnetic parts of the magnetic circuit system extend along a second direction perpendicular to the first direction, the first vibration system vibrates along the first direction, two voice coils of the first vibration system are arranged in parallel and are connected with the diaphragm assembly, and the second vibration system vibrates along a third direction perpendicular to the first direction and the second direction and is connected with the diaphragm assembly. The two long sides of a driving coil of the second vibration system are arranged corresponding to the two center magnetic parts respectively, the two side magnetic parts and the two center magnetic parts are magnetized in the first direction, the magnetizing directions are opposite, and the common magnetic part is magnetized in the third direction. According to the vibration sound production device, the loudspeaker and the motor are integrated, so that the integration level is improved, and the occupied space in electronic equipment is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electro-acoustic conversion, and in particular to a vibration sound generating device and an electronic device using the same. BACKGROUND

[0002] With the development of electronic technology, portable consumer electronic devices are increasingly popular, such as smart phones, handheld game consoles, tablet computers, etc. These electronic devices generally interact with users through sound playing and / or vibration feedback.

[0003] At present, electronic devices, especially mobile phone products, usually need to have both audio experience and vibration haptic experience functions. The audio experience comes from a loudspeaker device, and the vibration experience comes from a motor device, which improves the user's audio and vibration haptic experience. In related technologies, electronic devices usually separately set loudspeaker devices and motor devices, which leads to a large space occupation in smart terminal devices, is not conducive to the assembly of electronic devices, and has an undesirable layout effect, thereby affecting the user experience of smart terminals. SUMMARY

[0004] The main purpose of the present application is to provide a vibration sound generating device and an electronic device, which aims to provide a vibration sound generating device integrating a loudspeaker and a motor, thereby improving the integration of the vibration sound generating device, saving the space occupation of the vibration sound generating device in the electronic device, increasing the volume of the magnet, improving the performance, and reducing the product thickness.

[0005] To achieve the above purpose, the present application provides a vibration sound generating device, which comprises a magnetic circuit system and first and second vibration systems located on both sides of the magnetic circuit system along a first direction. The magnetic circuit system comprises a magnetic conducting plate and a common magnetic portion, two edge magnetic portions and two center magnetic portions arranged on the magnetic conducting plate. The common magnetic portion, the two edge magnetic portions and the two center magnetic portions all extend along a second direction perpendicular to the first direction. The two center magnetic portions are located between the two edge magnetic portions, and the common magnetic portion is located between the two center magnetic portions, so that each center magnetic portion is spaced apart from the common magnetic portion and an edge magnetic portion to form a magnetic gap. The length of the common magnetic portion along the second direction is less than or equal to the length of the center magnetic portion along the second direction. The first vibration system vibrates along the first direction, the first vibration system comprises a diaphragm assembly, two voice coils and two centering yokes (33), the two voice coils (32) are arranged in parallel and connected to the diaphragm assembly (31), and each voice coil (32) is arranged corresponding to a magnetic gap (25), and the two centering yokes (33) are arranged at the two ends of the magnetic circuit system (2) along the second direction, each centering yoke (33) comprises an outer fixed part (331), an inner fixed part (332) and an elastic arm part (333) connecting the outer fixed part (331) and the inner fixed part (332), the inner fixed part (332) is connected with the voice coil (32) and has a solder pad part (334) arranged thereon, the solder pad part (334) corresponds to the end of the common magnetic part (22) along the second direction, and the two voice coils (32) are connected in series through the solder pad part (334); The second vibration system vibrates along a third direction perpendicular to the first direction and the second direction, and the second vibration system comprises a driving coil, the driving coil has two long sides extending along the second direction, and the two long sides are arranged corresponding to the two center magnetic parts, respectively; Wherein, the two edge magnetic parts and the two center magnetic parts are magnetized along the first direction, the common magnetic part is magnetized along the third direction, the magnetization directions of the two center magnetic parts are opposite, and the magnetization directions of the adjacent edge magnetic part and center magnetic part are opposite, and the polarity of the magnetic pole of the common magnetic part facing the side of the center magnetic part is the same as the polarity of the magnetic pole of the center magnetic part facing the side of the driving coil.

[0006] In an embodiment, the common magnetic part comprises a common magnet, the common magnet is connected with the magnetic conductive plate, and the surface of the common magnet facing the first vibration system forms the surface of the common magnetic part; each edge magnetic part comprises an edge magnet and an edge magnetic conductive plate arranged in layers, and the edge magnet is connected with the magnetic conductive plate; each center magnetic part comprises a center magnet and a center magnetic conductive plate arranged in layers, and the center magnet is connected with the magnetic conductive plate; wherein, the common magnet is magnetized along the third direction, the two edge magnets and the two center magnets are magnetized along the first direction, the magnetization directions of the two center magnets are opposite, and the magnetization directions of the adjacent edge magnet and center magnet are opposite, the polarity of the magnetic pole of the common magnet facing the side of the center magnet is the same as the polarity of the magnetic pole of the center magnet facing the side of the driving coil, and the solder pad part corresponds to the end of the common magnet along the second direction; And / or, the width of the common magnetic part along the third direction is less than or equal to the width of the center magnetic part along the third direction.

[0007] In an embodiment, the magnetic conductive plate is provided with an opening corresponding to the two central magnetic portions, and portions of the two central magnetic portions are arranged in the opening and correspond to the two long sides; Alternatively, the magnetic conductive plate is provided with an opening corresponding to the common magnetic portion and the two central magnetic portions, and portions of the common magnetic portion and the two central magnetic portions are arranged in the opening, and the two central magnetic portions correspond to the two long sides, respectively; wherein the opening is one; or the opening includes three, and a rib is formed between adjacent openings, and the common magnetic portion and the two central magnetic portions correspond to the three openings one by one.

[0008] In an embodiment, the magnetic conductive plate is provided with the opening corresponding to the two central magnetic portions, and the two central magnetic portions each include a main body portion located on a side of the magnetic conductive plate facing the diaphragm assembly and a protruding portion extending towards the opening; wherein a side of the protruding portion facing the driving coil is arranged flush with a side of the magnetic conductive plate facing the driving coil. Alternatively, the magnetic conductive plate is provided with the opening corresponding to the common magnetic portion and the two central magnetic portions, and the common magnetic portion and the two central magnetic portions each include a main body portion located on a side of the magnetic conductive plate facing the diaphragm assembly and a protruding portion extending towards the opening; wherein a side of the protruding portion facing the driving coil is arranged flush with a side of the magnetic conductive plate facing the driving coil.

[0009] In an embodiment, the second vibration system further includes a counterweight, and the driving coil is arranged in the counterweight.

[0010] In an embodiment, the counterweight is provided with a mounting hole, and at least a portion of the driving coil is arranged in the mounting hole.

[0011] In an embodiment, the second vibration system further includes a mounting plate corresponding to the mounting hole, the mounting plate is connected to the counterweight and located on a side of the driving coil away from the magnetic circuit system, and the driving coil is arranged in the mounting plate. wherein the mounting plate is welded or bonded to the counterweight; and / or the mounting plate is a magnetic conductive plate; and / or an end of the driving coil along the second direction is a wire end, and the wire end protrudes from an end of the mounting plate along the second direction.

[0012] In an embodiment, both ends of the counterweight along the third direction are provided with bending portions extending towards the first vibration system, so that the counterweight forms an accommodation space, and at least a portion of the magnetic circuit system is arranged in the accommodation space and located between the two bending portions.

[0013] In an embodiment, each of the bending portions is provided with a buffer member on a side facing into the accommodating space, the buffer member being located between the magnetic circuit system and the bending portion; Further, each of the limiting notches is provided with a limiting protrusion corresponding to each of the limiting notches, and a length of each of the limiting notches along the third direction is greater than a length of each of the limiting protrusions along the third direction.

[0014] In an embodiment, the vibration sound production device further comprises a shell, and the second vibration system further comprises a bending elastic sheet, one end of the bending elastic sheet being connected to the counterweight, and the other end of the bending elastic sheet being connected to the shell, so that the second vibration system is suspended in the shell. In an embodiment, the bending elastic sheet comprises two, and the two bending elastic sheets are arranged on two sides of the counterweight along the third direction.

[0015] In an embodiment, the first vibration system further comprises two centering branches, and the two centering branches are arranged at two ends of the magnetic circuit system along the second direction, respectively. Each of the centering branches comprises an outer fixed portion, an inner fixed portion, and an elastic arm portion connecting the outer fixed portion and the inner fixed portion, the inner fixed portion being connected to the two voice coils and being provided with a solder pad portion corresponding to an end of the common magnetic portion along the second direction, and the two voice coils being connected in series through the solder pad portion.

[0016] In an embodiment, the vibration sound production device further comprises a shell, and the magnetic circuit system, the first vibration system, and the second vibration system are arranged in the shell, the shell comprising: a first shell comprising a top plate and a support portion connected to the top plate, the top plate being a metal member, the support portion being injection-molded connected to the top plate, the top plate being opposite to and spaced apart from a side of the first vibration system away from the magnetic circuit system, and the support portion being used for supporting the first vibration system and the magnetic circuit system; and a second shell being a metal member, the second shell comprising a bottom plate and a side wall connected to a periphery of the bottom plate, the bottom plate being opposite to and spaced apart from a side of the second vibration system away from the magnetic circuit system, one end of the side wall away from the bottom plate being connected to the first shell, and the second vibration system being suspended and connected to the side wall.

[0017] In an embodiment, the top plate is provided with a glue grabbing hole, and part of the support portion is embedded in the glue grabbing hole. Further, one side of the support portion is provided with a sound outlet portion extending to an outside of the shell, or the top plate is provided with a sound outlet hole.

[0018] The application further provides an electronic device comprising the vibration sound production device.

[0019] The vibration sound production device of the technical scheme of the application is characterized in that the first vibration system and the second vibration system are arranged on the two sides of the magnetic circuit system along the first direction, the first vibration system and the magnetic circuit system cooperate to form a loudspeaker structure, the magnetic circuit system and the second vibration system cooperate to form a motor structure, the loudspeaker structure and the motor structure are integrated into an integrated structure, the integration degree of the vibration sound production device is effectively improved, the occupation space of the vibration sound production device in the electronic device is saved, the loudspeaker structure and the motor structure share one magnetic circuit system, the height of the vibration sound production device in the Z direction is effectively reduced, and the occupation space of the vibration sound production device in the electronic device is further saved. Meanwhile, the magnetic circuit system is arranged as a magnetic conductive plate, and the shared magnetic part, the two edge magnetic parts and the two center magnetic parts are arranged on the magnetic conductive plate, the two center magnetic parts are located between the two edge magnetic parts, and the shared magnetic part is located between the two center magnetic parts, so that each center magnetic part is spaced from the shared magnetic part and one edge magnetic part to form a magnetic gap, the first vibration system is arranged as a diaphragm assembly and two voice coils connected to the diaphragm assembly, and the two voice coils are arranged in parallel, so that each voice coil is arranged correspondingly to one magnetic gap. Thus, the diaphragm assembly is driven to vibrate and sound along the first direction by using the double-voice-coil structure to realize the sound production function of the loudspeaker structure. The volume of the magnet can be increased by the multi-magnetic-part design of the magnetic circuit system, and the acoustic performance of the loudspeaker structure is effectively improved by cooperating with the double-voice-coil structure. The height of the first vibration system in the Z direction is effectively reduced by using the double-voice-coil structure, so that the height of the vibration sound production device in the Z direction is further reduced. The driving coil of the second vibration system is extended along the second direction, so that the driving coil has two long sides extending along the second direction, and the two long sides are arranged correspondingly to the two center magnetic parts, respectively. The driving coil drives the second vibration system to vibrate along the third direction under the action of the magnetic circuit system, so as to realize the vibration function of the motor structure. Meanwhile, the two edge magnetic parts and the two center magnetic parts are magnetized along the first direction, the magnetization directions of the two center magnetic parts are opposite, and the magnetization directions of the adjacent edge magnetic parts and center magnetic parts are opposite, so that more magnetic induction lines pass through the voice coil located in the magnetic gap to improve the driving force on the voice coil. The polarity of the magnetic pole of the shared magnetic part facing one side of the center magnetic part is the same as the polarity of the magnetic pole of the center magnetic part facing one side of the driving coil, so that more magnetic induction lines generated by the two center magnetic parts pass through the two long sides of the driving coil by using the shared magnetic part, thereby increasing the driving force on the driving coil. Thus, the performance of the vibration sound production device is improved, and the loudspeaker structure and the motor structure of the vibration sound production device can work independently without interfering with each other, so that the vibration sound production device has both audio experience and vibration haptic experience functions, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without any creative effort.

[0021] Figure 1 Structure schematic diagram of an embodiment of the vibration sound generating device provided by the present application; Figure 2 Structure schematic diagram of another view of an embodiment of the vibration sound generating device provided by the present application; Figure 3 Partial exploded schematic diagram of an embodiment of the vibration sound generating device provided by the present application; Figure 4 Sectional view schematic diagram along the third direction of an embodiment of the vibration sound generating device provided by the present application; Figure 5 Top view structure schematic diagram of an embodiment of the vibration sound generating device provided by the present application with the second shell removed; Figure 6 Sectional view schematic diagram of the connection between the first vibration system and the magnetic circuit system of an embodiment of the vibration sound generating device provided by the present application; Figure 7 Partial top view structure schematic diagram of the connection between the first vibration system and the magnetic circuit system of an embodiment of the vibration sound generating device provided by the present application; Figure 8 Partial top view structure schematic diagram of another view of the connection between the first vibration system and the magnetic circuit system of an embodiment of the vibration sound generating device provided by the present application; Figure 9 Structure schematic diagram of an embodiment of the magnetic conducting plate provided by the present application; Figure 10 Exploded schematic diagram of an embodiment of the second vibration system provided by the present application; Figure 11 Simulation schematic diagram of the vibration sound generating device provided by the present application.

[0022] Explanation of the reference signs: 100, vibration sound device; 1, shell; 11, first shell; 111, top plate; 1111, glue hole; 112, support part; 1123, sound part; 12, second shell; 121, bottom plate; 122, side wall; 123, accommodating cavity; 124, limiting protrusion; 2, magnetic circuit system; 21, magnetic conducting plate; 211, opening; 212, rib; 22, common magnetic part; 221, main body part; 222, protrusion part; 223, common magnet; 23, edge magnetic part; 231, edge magnet; 232, edge magnetic conducting plate; 24, center magnetic part; 241, center magnet; 242, center magnetic conducting plate; 25, magnetic gap; 3, first vibration system; 31, diaphragm assembly; 311, diaphragm; 312, reinforcing part; 3121, connecting protrusion; 32, voice coil; 33, centering support piece; 331, outer fixed part; 332, inner fixed part; 333, elastic arm part; 334, solder pad part; 4, second vibration system; 41, counterweight; 411, mounting hole; 412, bending part; 413, accommodating space; 414, buffer part; 415, limiting notch; 416, mounting step; 42, driving coil; 421, long side; 422, wire end; 43, mounting plate; 44, bending elastic sheet; 5, mounting ring.

[0023] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0025] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" in the whole text is that it includes three schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme.

[0027] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0028] The present application provides a vibration sound device 100. It can be understood that the vibration sound device 100 can be applied to electronic equipment, which can be a mobile phone, a wearable device, etc., which is not limited here.

[0029] In the present embodiment, the vibration sound device 100 integrates the speaker structure and the vibration motor structure in function by sharing a magnetic circuit system, so that the space size of the integrated product is far less than the volume of the simple addition of the two. It can be understood that the vibration sound device 100 couples the functions of the speaker structure and the vibration motor structure together, which can realize the sound function of the speaker structure and also realize the vibration function of the motor structure.

[0030] Please refer to Figures 1 to 10As shown in the embodiment of the present application, the vibration sound generating device 100 comprises a magnetic circuit system 2 and a first vibration system 3 and a second vibration system 4 located on both sides of the magnetic circuit system 2 along a first direction, the magnetic circuit system 2 comprises a magnetic conducting plate 21 and a common magnetic part 22, two edge magnetic parts 23 and two center magnetic parts 24 provided on the magnetic conducting plate 21, the common magnetic part 22, the two edge magnetic parts 23 and the two center magnetic parts 24 all extend along a second direction perpendicular to the first direction, the two center magnetic parts 24 are located between the two edge magnetic parts 23, and the common magnetic part 22 is located between the two center magnetic parts 24, so that each center magnetic part 24 is spaced from the common magnetic part 22 and an edge magnetic part 23 to form a magnetic gap 25, the first vibration system 3 vibrates along the first direction, the first vibration system 3 comprises a diaphragm assembly 31 and two voice coils 32 connected to the diaphragm assembly 31, the two voice coils 32 are arranged in parallel, and each voice coil 32 is arranged corresponding to a magnetic gap 25, the second vibration system 4 vibrates along a third direction perpendicular to the first direction and the second direction, the second vibration system 4 comprises a driving coil 42, the driving coil 42 has two long sides 421 extending along the second direction, and the two long sides 421 are arranged corresponding to the two center magnetic parts 24 respectively; wherein the two edge magnetic parts 23 and the two center magnetic parts 24 are magnetized along the first direction, the common magnetic part 22 is magnetized along the third direction, the magnetization directions of the two center magnetic parts 24 are opposite, the magnetization directions of the adjacent edge magnetic part 23 and center magnetic part 24 are opposite, and the polarity of the magnetic pole on the side of the common magnetic part 22 facing the center magnetic part 24 is the same as the polarity of the magnetic pole on the side of the center magnetic part 24 facing the driving coil 42.

[0031] As shown in the embodiment of the present application, Figure 3 and Figure 4 the magnetic circuit system 2 has a first side and a second side facing away from each other along the first direction, the first vibration system 3 and the second vibration system 4 are arranged on both sides of the magnetic circuit system 2 along the first direction respectively, that is, the first vibration system 3 is located on the first side of the magnetic circuit system 2 and forms a loudspeaker structure together with the magnetic circuit system 2, and the second vibration system 4 is located on the second side of the magnetic circuit system 2 and forms a motor structure together with the magnetic circuit system 2. In this way, the loudspeaker structure and the motor structure are integrated, which effectively improves the integration of the vibration sound generating device 100, saves the occupied space of the vibration sound generating device 100 in the electronic device, and makes the loudspeaker structure and the motor structure share one magnetic circuit system 2, thereby effectively reducing the height of the vibration sound generating device 100 in the Z direction, further saving the occupied space of the vibration sound generating device 100 in the electronic device, and making the vibration sound generating device 100 not only realize the sound generating function of the loudspeaker structure, but also realize the vibration function of the motor structure, and the space size of the integrated product is far smaller than the volume of the simple addition of the two, thereby effectively reducing the volume of the vibration sound generating device 100.

[0032] It can be understood that the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 of the vibration sound production device 100 can be integrated by the shell 1, that is, the shell 1 provides a mounting base for the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4.

[0033] In an embodiment, in order to facilitate the installation and protection of the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4, the shell 1 has a mounting cavity, and the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 are arranged in the mounting cavity of the shell 1. Alternatively, the structure of the shell 1 can be a mounting shell, a box or a box structure with a mounting cavity.

[0034] It should be noted that the shell 1 can be a one-piece structure or a split structure. In the embodiment, as shown in Figures 1 to 5 the shell 1 includes a first shell 11 and a second shell 12, that is, the shell 1 is split and connected by the first shell 11 and the second shell 12 to form a one-piece structure. Of course, in other embodiments, the shell 1 can also be formed by one-piece molding, which is not limited here.

[0035] Alternatively, the first shell 11 and the second shell 12 of the shell 1 are metal parts, and the first shell 11 and the second shell 12 are sealingly connected to define a mounting cavity, that is, the first shell 11 and the second shell 12 are made of metal material, so that the overall structure of the shell 1 is made of metal material. In the embodiment, the first shell 11 connects and fixes the magnetic circuit system 2 and the first vibration system 3, and the second vibration system 4 is suspended and connected to the second shell 12, which is not limited here.

[0036] It can be understood that the first shell 11 and the second shell 12 of the shell 1 can be made of thin steel sheets, so that the shell 1 can be designed to be thinner, thereby greatly increasing the cavity volume in the shell 1, effectively increasing the sound cavity volume of the loudspeaker structure formed by the cooperation of the magnetic circuit system 2 and the first vibration system 3, and thereby improving the acoustic performance of the vibration sound production device 100. At the same time, the first vibration system 3 is fixed in the shell 1, so that heat dissipation can be achieved by the shell 1 made of metal material, and the heat dissipation performance of the vibration sound production device 100 is improved.

[0037] Of course, in other embodiments, the shell 1 has other forms, the shell 1 can be a support arranged on the side of the magnetic circuit system 2 away from the first vibration system 3, and the second vibration system 4 is suspendedly connected to the support and opposite and spaced from the magnetic circuit system 2; at this time, the magnetic circuit system 2 and the first vibration system 3 of the vibration sound production device 100 are arranged outside the shell 1, and the magnetic circuit system 2 and the first vibration system 3 are connected through the mounting ring 5, so that the connection and fixation of the first vibration system 3, the magnetic circuit system 2 and the second vibration system 4 can be realized. Further, the shell 1 can be a structure with a receiving space with one end open or both ends open, and its form can be flexibly adjusted according to actual application, which is not limited here. At the same time, the mounting ring 5 can be integrally arranged with the magnetic circuit system 2 or separately arranged, and is named only for the purpose of showing the relative position relationship between the first vibration system 3 and the magnetic circuit system 2, which is not limited here.

[0038] In the present embodiment, as shown in Figure 4 , Figures 6 to 9 , the magnetic circuit system 2 is arranged as a magnetic conducting plate 21 and the common magnetic part 22, the two edge magnetic parts 23 and the two center magnetic parts 24 arranged on the magnetic conducting plate 21, so that the common magnetic part 22, the two edge magnetic parts 23 and the two center magnetic parts 24 all extend along the second direction, so that the two center magnetic parts 24 are located between the two edge magnetic parts 23, and the common magnetic part 22 is located between the two center magnetic parts 24, that is, one edge magnetic part 23, one center magnetic part 24, the common magnetic part 22, the other center magnetic part 24 and the other edge magnetic part 23 are arranged in the third direction with a spacing, so that each center magnetic part 24 is spaced from the common magnetic part 22 and one edge magnetic part 23 to form a magnetic gap 25, so that the magnetic circuit system 2 forms two magnetic gaps 25 arranged along the third direction, and the first vibration system 3 is arranged as a diaphragm assembly 31 and two voice coils 32 connected to the diaphragm assembly 31, so that the two voice coils 32 are arranged in parallel along the third direction, and each voice coil 32 is arranged corresponding to one magnetic gap 25, that is, each center magnetic part 24 is located in one voice coil 32, so that an electric current is passed through the voice coil 32, so that the voice coil 32 introduces the electric current into the magnetic field generated by the magnetic circuit system 2 in the magnetic gap 25, thereby realizing the conversion of electric energy into mechanical energy, so that the two voice coils 32 drive the diaphragm assembly 31 to vibrate along the first direction to produce sound, so as to realize the sound production function of the loudspeaker structure formed by the cooperation of the magnetic circuit system 2 and the first vibration system 3.

[0039] It can be understood that the loudspeaker structure formed by the cooperation of the magnetic circuit system 2 and the first vibration system 3 drives the diaphragm assembly 31 to vibrate along the first direction to produce sound by using the double-voice-coil structure, so as to realize the sound production function of the loudspeaker structure, which can not only increase the volume of the magnet by designing multiple magnetic parts of the magnetic circuit system 2 and cooperate with the double-voice-coil structure to effectively improve the acoustic performance of the loudspeaker structure, but also effectively reduce the height in the Z direction by using the double-voice-coil structure of the first vibration system 3, thereby further reducing the height of the vibration sound production device 100 in the Z direction.

[0040] Meanwhile, as shown in Figures 3 to 5 , Figure 10 , the driving coil 42 of the second vibration system 4 is arranged to extend along the second direction, so that the driving coil 42 has two long sides 421 extending along the second direction, and the two long sides 421 are respectively arranged corresponding to the two center magnetic portions 24. In this way, current is passed through the driving coil 42, so that the two long sides 421 of the driving coil 42 vibrate in the magnetic field formed by the common magnetic portion 22 and the two center magnetic portions 24 of the magnetic circuit system 2, so that the second vibration system 4 vibrates along the third direction, to realize the vibration function of the motor structure formed by the magnetic circuit system 2 and the second vibration system 4.

[0041] It can be understood that the vibration sound device 100 can realize the stacking of the loudspeaker structure and the motor structure along the first direction by arranging the first vibration system 3 and the second vibration system 4 on both sides of the magnetic circuit system 2 along the first direction, realize the combination of the two function products of the vibration experience function and the audio experience function, and make the loudspeaker structure and the motor structure share one magnetic circuit system 2, increase the magnet volume of the magnetic circuit system 2, and improve the performance of the loudspeaker structure and the motor structure. In addition, the height or thickness of the vibration sound device 100 in the Z direction (i.e. the first direction) can be reduced, so that the vibration sound device 100 has both the audio experience function and the vibration experience function.

[0042] It should be noted that, as shown in Figures 1 to 10 , the first vibration system 3 vibrates along the first direction, the second vibration system 4 vibrates along the third direction, the common magnetic portion 22, the two edge magnetic portions 23 and the two center magnetic portions 24 of the magnetic circuit system 2 all extend along the second direction and are arranged in the third direction. The first direction, the second direction and the third direction are arranged perpendicular to each other.

[0043] It can be understood that the loudspeaker structure formed by the magnetic circuit system 2 and the first vibration system 3 can realize sound emission, so that the vibration sound device 100 has the audio experience function. The motor structure formed by the magnetic circuit system 2 and the second vibration system 4 vibrates along the third direction, so that the vibration sound device 100 has the vibration experience function. In this embodiment, the first vibration system 3 and the second vibration system 4 can work respectively and do not interfere with each other, so that the vibration sound device 100 has both the audio experience and the vibration tactile experience function, and the user's experience is improved.

[0044] In this embodiment, as shown in Figure 4 and Figure 6As shown, by setting two side magnetic parts 23 and two central magnetic parts 24 to be magnetized along a first direction, the magnetization directions of the two central magnetic parts 24 are opposite, and the magnetization directions of adjacent side magnetic parts 23 and central magnetic parts 24 are opposite. A common magnetic part 22 is set to be magnetized along a third direction, and the polarity of the magnetic pole of the common magnetic part 22 facing the central magnetic part 24 is the same as the polarity of the magnetic pole of the central magnetic part 24 facing the drive coil 42. This ensures that each central magnetic part 24 is connected to both the common magnetic part 22 and one side magnetic part 23. A magnetic circuit is formed by the combination of the magnetic gap 25, allowing more magnetic field lines to pass through the voice coil 32 located within the magnetic gap 25, thereby increasing the driving force on the voice coil 32. Simultaneously, a Heilbeck magnetic array is formed by the common magnetic part 22 and the two central magnetic parts 24, allowing the common magnetic part 22 to guide more magnetic field lines generated by the two central magnetic parts 24 through the two long sides 421 of the drive coil 42, thereby increasing the driving force on the drive coil 42. This improves the vibration performance of the vibration-generating device 100. Figure 11 The simulation diagram of the vibration sound-generating device 100 shown is shown.

[0045] In one embodiment, the vibration sound-generating device 100 further includes a mounting ring 5, one end of which is connected to the side magnetic part 23 of the magnetic circuit system 2, and the other end of which is connected to the outer periphery of the diaphragm assembly 31.

[0046] In this embodiment, as Figure 3 , Figure 4 , Figures 6 to 8 As shown, a mounting ring 5 is provided between the magnetic circuit system 2 and the diaphragm assembly 31, thereby enabling the installation and fixation of the magnetic circuit system 2 and the first vibration system 3. It is understood that the mounting ring 5 can be a plastic or metal part. The mounting ring 5 and the side magnetic guide plate 232 of the side magnetic part 23 of the magnetic circuit system 2 can be a separate connection structure, for example, the mounting ring 5 and the side magnetic guide plate 232 of the side magnetic part 23 can be bonded together. Of course, the mounting ring 5 and the side magnetic guide plate 232 of the side magnetic part 23 of the magnetic circuit system 2 can also be an integrally molded structure, for example, the mounting ring 5 and the side magnetic guide plate 232 of the side magnetic part 23 can be integrally injection molded or integrally stretched, etc., which is not limited here.

[0047] In one embodiment, the two voice coils 32 of the first vibration system 3 are arranged in parallel. Both voice coils 32 are annular voice coils formed by winding wires. Each voice coil 32 has a height along a first direction, and the height is greater than or equal to the thickness between the inner and outer wall surfaces of the voice coil 32.

[0048] In this embodiment, as Figure 4 , Figures 6 to 8As shown, the two voice coils 32 of the first vibration system 3 are arranged in parallel along the third direction. Optionally, the two voice coils 32 are both annular voice coils formed by winding a wire. It can be understood that each voice coil 32 is formed by winding a wire to be an integral voice coil extending along the first direction. Each voice coil 32 has a height along the first direction, and optionally, the height of each voice coil 32 is greater than or equal to the thickness of the voice coil 32. It should be noted that the thickness of each voice coil 32 is the distance between the inner wall surface and the outer wall surface of the annular voice coil.

[0049] It can be understood that the height dimension of the voice coil 32 is greater than the thickness dimension of the voice coil 32, and in the vibration process, especially in the case of a relatively large vibration amplitude, the influence of the change of the magnetic field is smaller, the BL(x) curve is significantly flatter, the distortion of the vibration sound generation device 100 is significantly reduced, and the sound quality is improved.

[0050] In the embodiment, as shown in Figures 3 to 5 、 Figure 10 The driving coil 42 extends along the second direction, so that the two long edges 421 of the driving coil 42 are arranged corresponding to the two center magnetic portions 24, respectively. In this way, the magnetic circuit system 2 can provide sufficient magnetic field for the driving coil 42 to ensure that the driving coil 42 drives the second vibration system 4 to vibrate and move.

[0051] In an embodiment, the common magnetic portion 22 includes a common magnet 223 connected with the magnetic conductive plate 21, and the surface of the common magnet 223 facing the first vibration system 3 forms the surface of the common magnetic portion 22; each side magnetic portion 23 includes a side magnet 231 and a side magnetic conductive plate 232 arranged in layers, and the side magnet 231 is connected with the magnetic conductive plate 21; each center magnetic portion 24 includes a center magnet 241 and a center magnetic conductive plate 242 arranged in layers, and the center magnet 241 is connected with the magnetic conductive plate 21; wherein the common magnet 223 is magnetized along the third direction, the two side magnets 231 and the two center magnets 241 are both magnetized along the first direction, the magnetization directions of the two center magnets 241 are opposite, the magnetization directions of the adjacent side magnet 231 and center magnet 241 are opposite, and the polarity of the magnetic pole of the side of the common magnet 223 facing each center magnet 241 is the same as the polarity of the magnetic pole of the side of the center magnet 241 facing the driving coil 42.

[0052] In the embodiment, as shown in Figure 4 、 Figures 6 to 8As shown, the common magnet 223, the two edge magnets 231 and the two center magnets 241 all extend along the second direction and are spaced apart along the third direction. It can be understood that by setting the two edge magnets 231 and the two center magnets 241 to be magnetized along the first direction, the magnetization directions of the two center magnets 241 are opposite, and the magnetization directions of the adjacent edge magnets 231 and center magnets 241 are opposite, and the common magnet 223 is set to be magnetized along the third direction, and the magnetic concentration effect of the center magnetic plate 242 and the edge magnetic plate 232 is used, so that each center magnet 241 cooperates with the common magnet 223 and an edge magnet 231 to form a magnetic circuit passing through the magnetic gap 25, so that more magnetic lines of the magnetic circuit system 2 pass through the voice coil 32 located in the magnetic gap 25, thereby improving the driving force on the voice coil 32; at the same time, the common magnet 223 magnetized along the third direction cooperates with the two center magnets 241 magnetized along the first direction to form a Halbach magnetic array, and the common magnet 223 forms the surface of the common magnetic part 22 towards the surface of the first vibration system 3, that is, the common magnet 223 is no longer provided with a magnetic plate, so that the magnetic lines generated by the two center magnets 241 pass through the two long edges 421 of the drive coil 42 more, thereby increasing the driving force on the drive coil 42, so that the vibration performance of the vibration sound production device 100 can be improved. As shown in the simulation schematic diagram of the vibration sound production device 100. Figure 11 As shown in the simulation schematic diagram of the vibration sound production device 100.

[0053] It can be understood that each center magnet 241 and the common magnet 223 and an edge magnet 231 form a magnetic gap 25, and each center magnetic plate 242 and each edge magnetic plate 232 are stacked along the first direction with each center magnet 241 and each edge magnet 231, so that more magnetic lines are concentrated in the magnetic gap 25 and pass through the voice coil 32, and the two voice coils 32 generate higher driving force in the two magnetic gaps 25, driving the diaphragm assembly 31 of the first vibration system 3 to move.

[0054] It should be noted that since the short axis region of the voice coil 32 is far away from the magnetic field, the proportion of the short axis region of the voice coil 32 far away from the magnetic field is less than 15%, so the BL loss is controlled within 15%, and the long axis of the voice coil 32 is as close as possible to the center magnet 241, the edge magnet 231 and the common magnet 223 to improve the utilization rate of the magnetic circuit.

[0055] In this embodiment, the magnetization directions of the two center magnets 241 corresponding to the two long edges 421 of the drive coil 42 are opposite, and the current directions in the two long edges 421 of the drive coil 42 are opposite, so that under the action of the two center magnets 241, the drive coil 42 can drive the second vibration system 4 to vibrate and move along the third direction.

[0056] It can be understood that the extending directions of the two center magnetic portions 24 and the common magnetic portion 22 are consistent with the extending directions of the two long sides 421 of the driving coil 42, and all extend along the second direction. In the embodiment, the arrangement directions of the two center magnetic portions 24 and the common magnetic portion 22 are the same as the vibration moving direction of the second vibration system 4, and the arrangement directions of the two long sides 421 of the driving coil 42 are the same as the vibration moving direction of the second vibration system 4.

[0057] In an embodiment, the width of the common magnetic portion 22 along the third direction is less than or equal to the width of the center magnetic portion 24 along the third direction.

[0058] In the embodiment, as shown in Figure 4 , Figures 6 to 8 , by setting the width of the common magnetic portion 22 along the third direction to be less than or equal to the width of the center magnetic portion 24 along the third direction, the two center magnetic portions 24 are closer to each other, the response between them is increased, and the magnetic field strength is further enhanced.

[0059] It can be understood that the width of the common magnetic portion 22 along the third direction is defined as d1, and the width of the center magnetic portion 24 along the third direction is defined as d2. Optionally, d1≤d2. In the embodiment, the width of the common magnetic portion 223 along the third direction is set to be less than or equal to the width of the center magnetic portion 241 along the third direction.

[0060] In an embodiment, the magnetic conductive plate 21 is provided with an opening 211 corresponding to the two center magnetic portions 24, and parts of the two center magnetic portions 24 are arranged in the opening 211 and correspond to the two long sides 421.

[0061] In the embodiment, by setting the opening 211 on the magnetic conductive plate 21, parts of the two center magnetic portions 24 are arranged in the opening 211 and correspond to the two long sides 421 of the driving coil 42. In this way, the distance between the two center magnetic portions 24 and the driving coil 42 can be reduced, and the magnetic field strength provided by the two center magnetic portions 24 to the driving coil 42 can be effectively improved to ensure that the driving coil 42 drives the second vibration system 4 to vibrate and move. At the same time, it is also conducive to the thinning of the vibration sound generating device 100.

[0062] It can be understood that the opening 211 on the magnetic conductive plate 21 can be two, and the two center magnetic portions 24 correspond to the two openings 211 one by one, which is not limited herein. In the embodiment, each opening 211 penetrates through both sides of the magnetic conductive plate 21 along the first direction, and the two center magnetic portions 24 are arranged in the two openings 211, that is, the end of the center magnetic portion 241 away from the center magnetic conductive plate 242 is arranged in the opening 211.

[0063] Optionally, the side of the center magnet 241 of the center magnetic part 24, which is away from the center magnetic plate 242, is flush with the side of the magnetic plate 21 facing the driving coil 42.

[0064] In the embodiment, the two ends of the at least two center magnetic parts 24 along the second direction are supported on the magnetic plate 21. In this way, the connection stability of the two center magnetic parts 24 and the magnetic plate 21 can be improved, and the middle region of the two center magnetic parts 24 extends in the corresponding opening 211 and is arranged corresponding to the driving coil 42, thereby providing a magnetic field for the driving coil 42 of the second vibration system 4.

[0065] Optionally, the width of the opening 211 along the third direction is less than or equal to 1.1 times the width of the corresponding center magnetic part 24 along the third direction. Specifically, the width of the opening 211 along the third direction can be substantially equal to the width of the corresponding center magnetic part 24 along the third direction. In this case, the center regions of the center magnetic parts 24 located at the two ends along the second direction are arranged in the opening 211 and are substantially flush with the inner wall of the opening 211, and only the two end regions are supported on the magnetic plate 21, which can maximize the magnetic field strength. Alternatively, the width of the opening 211 along the third direction can be less than the width of the corresponding center magnetic part 24 along the third direction. In this way, the structural strength of the magnetic plate 21 can be ensured without increasing the width of the magnetic gap, and the process is more convenient.

[0066] In an embodiment, the magnetic plate 21 is provided with an opening 211 corresponding to the two center magnetic parts 24, and the two center magnetic parts 24 each include a main body part 221 located on the side of the magnetic plate 21 facing the diaphragm assembly 31 and a protruding part 222 extending into the opening 211; wherein the side of the protruding part 222 facing the driving coil 42 is flush with the side of the magnetic plate 21 facing the driving coil 42.

[0067] In the embodiment, as shown in Figure 4 , Figure 6 , Figure 8 , Figure 9 The center magnet 241 of each of the two center magnetic parts 24 includes a main body part 221 and a protruding part 222 arranged along the first direction, the main body part 221 is supported on the side of the magnetic plate 21 facing the diaphragm assembly 31, and the protruding part 222 extends into the opening 211. In this way, the magnetic volume of the two center magnets 241 can be effectively increased to improve the magnetic field strength of the magnetic circuit system 2, thereby improving the vibration performance of the first vibration system 3 and the second vibration system 4.

[0068] It can be understood that the two ends of the main body part 221 along the second direction are supported on the magnetic plate 21, i.e., the two ends of the main body part 221 of the two center magnets 241 along the second direction are supported on the magnetic plate 21, thereby improving the connection stability of the two center magnetic parts 24 and the magnetic plate 21.

[0069] Optionally, the side of each of the plurality of protrusions 222 facing the driving coil 42 is flush with the side of the magnetic conduction plate 21 facing the driving coil 42. Such arrangement can not only enable the two center magnets 241 to be arranged opposite to the two long edges 421 of the driving coil 42 to improve the magnetic field strength, but also avoid the magnetic circuit system 2 interfering with the vibration movement of the second vibration system 4 along the third direction.

[0070] To further ensure the structural stability of the magnetic circuit system 2, in an embodiment, the two center magnetic portions 24 are integrally hot-pressed with the magnetic conduction plate 21. In the present embodiment, the center magnets 241 of the center magnetic portions 24 can be made of neodymium iron boron material.

[0071] It can be understood that by integrally hot-pressing the two center magnets 241 with the magnetic conduction plate 21, the outer periphery of the protrusions 222 of the two center magnets 241 is arranged in abutment with the inner wall of the opening 211 of the magnetic conduction plate 21, that is, the two center magnets 241 are in “zero fit” with the magnetic conduction plate 21, so that the connection between the two center magnets 241 and the magnetic conduction plate 21 is nearly completely abutted, eliminating the assembly tolerance and material tolerance, enabling the volume of the two center magnets 241 to be maximized, and compared with sintered neodymium iron boron, hot-pressed neodymium iron boron can improve the mechanical strength of the two center magnets 241 and is not prone to breaking, so that the vibration sound generating device 100 not only realizes a super-thin design of the magnetic circuit, but also increases the magnet volume of the magnetic circuit system 2, thereby improving the sound generating performance of the vibration sound generating device 100, and making the structural reliability of the magnetic circuit system 2 good and not prone to breaking, not only improving the use stability of the product, but also meeting higher performance to make up for the performance loss after the vibration sound generating device 100 is thinned.

[0072] Optionally, the width of each opening 211 along the third direction is less than or equal to 1.1 times the width of the corresponding main body portion 221 along the third direction, which is not limited herein.

[0073] In an embodiment, the magnetic conduction plate 21 is provided with an opening 211 corresponding to the common magnetic portion 22 and the two center magnetic portions 24, and parts of the common magnetic portion 22 and the two center magnetic portions 24 are arranged in the opening 211, and the two center magnetic portions 24 are arranged corresponding to the two long edges 421, respectively.

[0074] In the present embodiment, as shown in FIG. 2, the magnetic conduction plate 21 is provided with an opening 211 corresponding to the common magnetic portion 22 and the two center magnetic portions 24, and parts of the common magnetic portion 22 and the two center magnetic portions 24 are arranged in the opening 211. Figure 4 、 Figure 6 、 Figure 8 、 Figure 9As shown, by setting the opening 211 on the magnetic conductive plate 21, the part of the common magnetic part 22 and the two central magnetic parts 24 are arranged in the opening 211, and the two central magnetic parts 24 are arranged corresponding to the two long edges 421 of the drive coil 42. In this way, the distance between the two central magnetic parts 24 and the drive coil 42 can be reduced, and the common magnetic part 22 can more effectively guide the magnetic induction lines of the two central magnetic parts 24 to pass through the two long edges 421 of the drive coil 42 in the first direction, thereby improving the magnetic field strength provided by the common magnetic part 22 and the two central magnetic parts 24 for the drive coil 42, to ensure that the drive coil 42 drives the second vibration system 4 to vibrate and move. At the same time, it is also beneficial to the thinning of the vibration sound device 100.

[0075] It can be understood that the opening 211 on the magnetic conductive plate 21 can be one or more. When the opening 211 is one, the part of the common magnetic part 22 and the two central magnetic parts 24 are arranged in the opening 211. In this way, it is convenient for process processing and saves process cost. When the opening 211 is multiple, optionally, the opening 211 includes three. In the embodiment, as shown in Figure 4 、 Figure 6 and Figure 9 As shown, the adjacent openings 211 form a rib 212, the common magnetic part 22 and the two central magnetic parts 24 correspond to the three openings 211 one by one, and the rib 212 can reduce the divergence of the magnetic force line, so that more magnetic force lines are gathered in the magnetic field and pass through the voice coil 32 or the drive coil 42.

[0076] In the embodiment, as shown in Figure 4 、 Figure 6 、 Figure 8 and Figure 9 As shown, the magnetic conductive plate 21 is provided with three openings 211, and each opening 211 penetrates through the two sides of the magnetic conductive plate 21 along the first direction, the common magnet 223 of the common magnetic part 22 and the two central magnets 241 of the two central magnetic parts 24 are arranged in the three openings 211, that is, the end of the common magnet 223 away from the common magnetic conductive plate 224 is arranged in the opening 211, and the end of the central magnet 241 away from the central magnetic conductive plate 242 is arranged in the opening 211.

[0077] Optionally, the side of the common magnet 223 of the common magnetic part 22 away from the common magnetic conductive plate 224 is flush with the side of the magnetic conductive plate 21 facing the drive coil 42, and the side of the central magnet 241 of the central magnetic part 24 away from the central magnetic conductive plate 242 is flush with the side of the magnetic conductive plate 21 facing the drive coil 42.

[0078] In the embodiment, as shown in Figure 8 and Figure 9As shown, at least the common magnetic portion 22 and the two central magnetic portions 24 are supported on the magnetic conductive plate 21 at both ends along the second direction. In this way, the connection stability of the common magnetic portion 22 and the two central magnetic portions 24 to the magnetic conductive plate 21 can be improved, and the middle regions of the common magnetic portion 22 and the two central magnetic portions 24 extend into the corresponding openings 211 and are arranged corresponding to the drive coils 42, thereby providing magnetic fields for the two drive coils 42 of the second vibration system 4.

[0079] Optionally, the width of the opening 211 along the third direction is less than or equal to 1.1 times the width of the corresponding common magnetic portion 22 or central magnetic portion 24 along the third direction. Specifically, the width of the opening 211 along the third direction can be substantially equal to the width of the corresponding common magnetic portion 22 or central magnetic portion 24 along the third direction, in which case the central regions of the common magnetic portion 22 or central magnetic portion 24 at both ends along the second direction are arranged in the opening 211 and substantially abut the inner wall of the opening 211, and only the end regions are supported on the magnetic conductive plate 21, which can maximize the magnetic field strength. Alternatively, the width of the opening 211 along the third direction can be less than the width of the corresponding common magnetic portion 22 or central magnetic portion 24 along the third direction, which can ensure the structural strength of the magnetic conductive plate 21 without increasing the width of the magnetic gap, and is more convenient for processing.

[0080] In an embodiment, the magnetic conductive plate 21 is provided with an opening 211 corresponding to the common magnetic portion 22 and the two central magnetic portions 24, and the common magnetic portion 22 and the two central magnetic portions 24 each include a main body portion 221 on the side of the magnetic conductive plate 21 facing the diaphragm assembly 31 and a protruding portion 222 extending into the opening 211; wherein the side of the protruding portion 222 facing the drive coil 42 is flush with the side of the magnetic conductive plate 21 facing the drive coil 42.

[0081] In the present embodiment, as shown in Figure 4 , Figure 6 , Figure 8 , Figure 9 the common magnet 223 of the common magnetic portion 22 and the central magnet 241 of the two central magnetic portions 24 each include a main body portion 221 and a protruding portion 222 arranged along the first direction, the main body portion 221 is supported on the side of the magnetic conductive plate 21 facing the diaphragm assembly 31, and the protruding portion 222 extends into the opening 211. In this way, the magnet volume of the common magnet 223 and the two central magnets 241 can be effectively increased, thereby improving the magnetic field strength of the magnetic circuit system 2 and enhancing the vibration performance of the first vibration system 3 and the second vibration system 4.

[0082] It can be understood that the main body 221 is supported at both ends in the second direction on the magnetic conductive plate 21, that is, the main body 221 of the common magnet 223 and the main body 221 of the two center magnets 241 are supported at both ends in the second direction on the magnetic conductive plate 21, so that the connection stability of the common magnetic part 22 and the two center magnetic parts 24 with the magnetic conductive plate 21 can be improved.

[0083] Optionally, the side of each protruding part 222 facing the drive coil 42 is flush with the side of the magnetic conductive plate 21 facing the drive coil 42. Such arrangement can not only make the common magnet 223 and the two center magnets 241 oppositely arranged with the two drive coils 42 to improve the magnetic field strength, but also avoid the magnetic circuit system 2 interfering with the vibration movement of the second vibration system 4 in the third direction.

[0084] In order to further ensure the structural stability of the magnetic circuit system 2, in an embodiment, the common magnetic part 22 and the two center magnetic parts 24 are integrally hot-pressed with the magnetic conductive plate 21. In this embodiment, the common magnet 223 of the common magnetic part 22 and the center magnet 241 of the center magnetic part 24 can be selected as neodymium iron boron material.

[0085] It can be understood that by integrally hot-pressing the common magnet 223 and the two center magnets 241 with the magnetic conductive plate 21, the outer periphery of the protruding part 222 of the common magnet 223 and the two center magnets 241 is arranged in close contact with the inner wall of the opening 211 of the magnetic conductive plate 21, that is, the common magnet 223 and the two center magnets 241 are realized as "zero parts" with the magnetic conductive plate 21, so that the connection between the common magnet 223 and the two center magnets 241 and the magnetic conductive plate 21 is almost completely in close contact, eliminating the assembly tolerance and material tolerance, and maximizing the volume of the common magnet 223 and the two center magnets 241. Compared with sintered neodymium iron boron, hot-pressed neodymium iron boron can improve the mechanical strength of the common magnet 223 and the two center magnets 241, and is not easy to break, so that the vibration sound generating device 100 not only realizes the ultra-thin design of the magnetic circuit, but also increases the magnet volume of the magnetic circuit system 2, thereby improving the sound generating performance of the vibration sound generating device 100, and making the structure of the magnetic circuit system 2 reliable and not easy to break, not only improving the use stability of the product, but also meeting the higher performance to make up for the performance loss after the thinning of the vibration sound generating device 100.

[0086] Optionally, the width of each opening 211 in the third direction is less than or equal to 1.1 times the width of the corresponding main body 221 in the third direction, which is not limited herein.

[0087] In an embodiment, the second vibration system 4 further comprises a counterweight 41, and the drive coil 42 is arranged on the counterweight 41.

[0088] In this embodiment, as shown in FIG. 2, the second vibration system 4 comprises a counterweight 41 and a drive coil 42 arranged on the counterweight 41. Figures 3 to 5 、 Figure 10As shown, by setting a counterweight 41, the drive coil 42 is installed and fixed, and the weight of the second vibration system 4 is increased. Thus, when the drive coil 42 drives the counterweight 41 to vibrate in the third direction, the vibration of the motor structure is improved.

[0089] Understandably, the counterweight 41 is suspended inside the outer casing 1, and the drive coil 42 is located on the counterweight 41. This allows the drive coil 42 to drive the counterweight 41 to vibrate in a third direction within the outer casing 1 under the action of the magnetic circuit system 2. Specifically, the counterweight 41 is provided with a mounting groove or mounting hole 411.

[0090] In one embodiment, the counterweight 41 is provided with a mounting hole 411, and at least a portion of the drive coil 42 is disposed within the mounting hole 411.

[0091] In this embodiment, as Figures 3 to 5 , Figure 10 As shown, by providing mounting holes 411 in the counterweight 41, at least part of the drive coil 42 is disposed in the mounting holes 411, which can not only realize the installation of the drive coil 42, but also reduce the stacking volume of the counterweight 41 and the drive coil 42 in the first direction, thereby further reducing the height of the vibration sound generating device 100 in the Z direction.

[0092] In one embodiment, the second vibration system 4 further includes a mounting plate 43 corresponding to the mounting hole 411. The mounting plate 43 is connected to the counterweight 41 and is located on the side of the drive coil 42 facing away from the magnetic circuit system 2. The drive coil 42 is disposed on the mounting plate 43.

[0093] In this embodiment, as Figure 4 , Figure 5 , Figure 10 As shown, by setting a mounting plate 43 and placing the drive coil 42 on the mounting plate 43, at least part of the drive coil 42 is placed in the mounting hole 411, and the mounting plate 43 is connected to the counterweight 41. In this way, the drive coil 42 and the counterweight 41 can be connected by the mounting plate 43, thereby improving the installation stability.

[0094] Understandably, the drive coils 42 all extend along the second direction and are disposed on the mounting plate 43, such that the drive coils 42 are located in the mounting holes 411 of the counterweight block 41, that is, the mounting plate 43 is disposed corresponding to the mounting holes 411 and is located on the side of the drive coils 42 facing away from the magnetic circuit system 2.

[0095] In one embodiment, the counterweight 41 is provided with a mounting step 416 on the side away from the magnetic circuit system 2. The mounting step 416 is provided adjacent to the mounting hole 411. The mounting plate 43 is fixed to the mounting step 416 and corresponds to the mounting hole 411. The drive coil 42 is provided on the mounting plate 43 and is located in the mounting hole 411.

[0096] In the embodiment, as shown in Figure 4 , Figure 5 , the mounting step 416 is arranged on the weight block 41, so that the mounting plate 43 is connected and fixed by the mounting step 416. In this way, the driving coil 42 can be connected with the weight block 41 through the mounting plate 43, and the mounting plate 43 can be positioned and fixed by the mounting step 416.

[0097] Optionally, the side of the mounting plate 43 away from the driving coil 42 is flush with the side of the weight block 41 away from the magnetic circuit system 2. In this way, the side of the second vibration system 4 away from the magnetic circuit system 2 is a plane, avoiding interference with other components when the second vibration system 4 vibrates in the third direction.

[0098] In the embodiment, the mounting plate 43 is welded with the weight block 41, so that the connection strength is improved, and the drop resistance of the vibration sound generating device 100 is improved. Of course, in other embodiments, the mounting plate 43 can be connected with the weight block 41 by adhesion, which is not limited herein.

[0099] Optionally, the mounting plate 43 is a magnetic conductive plate. In this way, the two central magnetic parts 24 of the magnetic circuit system 2 form a magnetic circuit through the two long edges 421 of the driving coil 42 by the magnetic conductive and magnetic gathering performance of the mounting plate 43, so as to ensure that the driving coil 42 is provided with sufficient magnetic field strength.

[0100] In an embodiment, one end of the driving coil 42 in the second direction is a wire end 422, and the wire end 422 protrudes from the end of the mounting plate 43 in the second direction.

[0101] In the embodiment, as shown in Figure 5 , the wire end 422 of the driving coil 42 is used to connect and conduct with an external circuit. In this way, the current is passed into the driving coil 42, so as to realize the mounting and fixing of the driving coil 42, and avoid the interference of the mounting plate 43 with the lead of the driving coil 42, etc.

[0102] In an embodiment, the vibration sound generating device 100 further comprises a housing 1, and the second vibration system 4 further comprises a bent elastic sheet 44, one end of the bent elastic sheet 44 is connected with the weight block 41, and the other end of the bent elastic sheet 44 is connected with the housing 1, so that the second vibration system 4 is suspended in the housing 1. It should be noted that the housing 1 can be in any form described above.

[0103] In the embodiment, as shown in Figures 3 to 5 , Figure 10As shown, the weight 41 is hung in the mounting cavity of the shell 1 by using the bending elastic piece 44, that is, one end of the bending elastic piece 44 is connected with the weight 41, and the other end of the bending elastic piece 44 is connected with the cavity wall of the shell 1. Thus, when the driving coil 42 drives the weight 41 to vibrate synchronously along the third direction, the bending elastic piece 44 provides a supporting installation basis for the weight 41, and also provides an elastic buffering force, so as to avoid that the vibration force of the weight 41 is too large to damage other components of the vibration sound generating device 100.

[0104] It can be understood that the bending elastic piece 44 can be a component with elastic expansion function, for example, an elastic piece, a spring or other elastic components, which are not limited herein. In the embodiment, the bending elastic piece 44 is connected to the outer peripheral wall of the weight 41. The bending elastic piece 44 can be an integral structure or a plurality of split structures, which are not limited herein.

[0105] Alternatively, the bending elastic piece 44 includes two. In the embodiment, the two bending elastic pieces 44 are arranged on both sides of the weight 41 along the third direction. One end of each of the two bending elastic pieces 44 is connected with the weight 41, and the other end of each of the two bending elastic pieces 44 is connected with the cavity wall of the mounting cavity of the shell 1. Thus, on the one hand, the mounting stability of the weight 41 can be improved by using the bending elastic piece 44, so as to ensure that the weight 41 is hung in the shell 1; on the other hand, the bending elastic piece 44 can also provide an elastic buffering force and a directional moving force for the vibration of the weight 41.

[0106] Alternatively, the two bending elastic pieces 44 are arranged in a central symmetry with the center of the mounting hole 411. In the embodiment, the driving coil 42 drives the weight 41 to vibrate and move in the horizontal direction along the third direction, and the bending elastic piece 44 is also used to provide a directional force for the overall movement of the weight 41.

[0107] Alternatively, the shape of the bending elastic piece 44 is L-shaped, V-shaped, U-shaped, W-shaped or Y-shaped. It can be understood that the bending elastic piece 44 can be made of metal material or plastic material, which is not limited herein. Alternatively, the bending elastic piece 44 and the weight 41 are an integral structure, so as to improve the structural strength and the connection stability.

[0108] In an embodiment, the two ends of the weight 41 along the third direction are both provided with bending portions 412 extending towards the first vibration system 3, so that the weight 41 forms a containing space 413, and at least part of the magnetic circuit system 2 is contained in the containing space 413 and located between the two bending portions 412.

[0109] In the embodiment, as shown in FIG. 1, the weight 41 is hung in the mounting cavity of the shell 1 by using the bending elastic piece 44, that is, one end of the bending elastic piece 44 is connected with the weight 41, and the other end of the bending elastic piece 44 is connected with the cavity wall of the shell 1. Thus, when the driving coil 42 drives the weight 41 to vibrate synchronously along the third direction, the bending elastic piece 44 provides a supporting installation basis for the weight 41, and also provides an elastic buffering force, so as to avoid that the vibration force of the weight 41 is too large to damage other components of the vibration sound generating device 100. Figure 3 , Figure 4 , Figure 10As shown, the counterweight 41 and the two bending portions 412 form a containing space 413, and the magnetic circuit system 2 is contained in the containing space 413.

[0110] It can be understood that at least part of the magnetic circuit system 2 is contained in the containing space 413 and located between the two bending portions 412. In this way, the counterweight 41 and the drive coil 42 are arranged more compactly with the magnetic circuit system 2, effectively improving the space utilization. In this embodiment, the drive coil 42 is arranged opposite to the magnetic circuit system 2, so that when current is passed through the drive coil 42, the drive coil 42 is in the magnetic field formed by the magnetic circuit system 2, thereby driving the counterweight 41 to vibrate and move.

[0111] In an embodiment, each bending portion 412 is provided with a buffer 414 on the side facing the containing space 413, and the buffer 414 is located between the magnetic circuit system 2 and the bending portion 412.

[0112] In this embodiment, as shown in Figure 3 、 Figure 4 、 Figure 10 By arranging the buffer 414 between the magnetic circuit system 2 and the bending portion 412 of the counterweight 41, the vibration of the counterweight 41 can be buffered by the buffer 414, so that the counterweight 41 does not collide with the magnetic circuit system 2 when driven by the drive coil 42 to vibrate in the third direction, thereby damaging the magnetic circuit system 2 or producing abnormal sound. Alternatively, the buffer 414 is a buffer foam or a silicon rubber block.

[0113] Of course, in other embodiments, a buffer structure is arranged between the counterweight 41 and the housing 1, so that the vibration of the counterweight 41 can be buffered by the buffer structure. Alternatively, the buffer structure is a buffer foam or a silicon rubber block. It can be understood that the buffer structure is arranged on both sides of the counterweight 41 in the third direction. That is, the buffer structure is arranged on the side of the bending spring 44 away from the counterweight 41.

[0114] In an embodiment, the counterweight 41 is provided with a limiting gap 415 on both sides in the second direction, and the vibration sound generating device 100 is provided with a limiting protrusion 124 corresponding to each limiting gap 415, and the length of each limiting gap 415 in the third direction is greater than the length of each limiting protrusion 124 in the third direction.

[0115] In this embodiment, as shown in Figure 3 、 Figure 5 、 Figure 10As shown, by setting the limiting notches 415 on both sides of the weight block 41 along the second direction, and making the limiting protrusions 124 correspond to the limiting notches 415, and the limiting protrusions 124 are accommodated in the limiting notches 415, thus when the drive coil 42 drives the weight block 41 to vibrate and move along the third direction, the displacement of the weight block 41 along the third direction is limited by the limiting protrusions 124, further avoiding the weight block 41 moving too much along the third direction and colliding with the magnetic circuit system 2. Optionally, the limiting protrusions 124 are fixedly arranged on the shell 1.

[0116] As can be understood, the extension length of the limiting notches 415 along the third direction is greater than the extension length of the limiting protrusions 124 along the third direction. As can be understood, in this way, the limiting protrusions 124 can be used to limit the weight block 41 along the third direction, avoiding the vibration amplitude of the weight block 41 along the third direction being too large to collide with the magnetic circuit system 2, thereby affecting the sound effect of the loudspeaker structure.

[0117] In an embodiment, the second vibration system 4 further comprises a circuit board, one end of the circuit board extends into the mounting cavity of the shell 1 and is electrically connected with the drive coil 42.

[0118] As can be understood, as Figure 3 、 Figure 5 、 Figure 10 shown, by setting the circuit board, the external circuit can be in conductive communication with the drive coil 42 by one end of the circuit board extending into the mounting cavity of the shell 1 and being electrically connected with the drive coil 42. Optionally, the circuit board is a flexible circuit board, so that one end of the circuit board can be pasted on the bottom wall of the mounting cavity of the shell 1, and the other end of the circuit board is bent and extended to the outside of the shell 1 to realize conduction.

[0119] In an embodiment, the first vibration system 3 further comprises two centering fins 33, the two centering fins 33 are respectively arranged at both ends of the magnetic circuit system 2 along the second direction; each centering fin 33 comprises an outer fixed part 331, an inner fixed part 332, and an elastic arm part 333 connecting the outer fixed part 331 and the inner fixed part 332, the inner fixed part 332 is connected with the two voice coils 32 and has a solder pad part 334 thereon, the solder pad part 334 corresponds to the end of the common magnetic part 22 along the second direction, and the two voice coils 32 are connected in series through the solder pad part 334.

[0120] In this embodiment, as Figure 3 、 Figure 7 、 Figure 8As shown, by setting the centering fins 33, on the one hand, the centering fins 33 effectively avoid the polarization and swing of the two voice coils 32, and on the other hand, the centering fins 33 realize the conduction of the two voice coils 32 and the external circuit. The centering fins 33 can be selected as two, and the two centering fins 33 are symmetrically arranged at the two ends of the magnetic circuit system 2 along the second direction and are respectively connected with the short shafts of the two voice coils 32.

[0121] Optionally, the pad part 334 of the centering fin 33 corresponds to the end of the common magnetic part 22 along the second direction, so that the pad part 334 is arranged at the position between the two voice coils 32, which is more convenient for electrical connection with the lead wires of the two voice coils 32. Optionally, the two voice coils 32 are connected in series through the centering fin 33.

[0122] Optionally, the length of the common magnetic part 22 along the second direction is less than or equal to the length of the center magnetic part 24 along the second direction, so that more design space can be reserved for the pad part, and the space utilization of the vibration sound production device 100 is improved.

[0123] In an embodiment, the vibration sound production device 100 further comprises a mounting ring 5 connected with the edge magnetic guide plate 232, the outer periphery of the diaphragm assembly 31 is connected with the mounting ring 5, and the outer fixed part 331 is connected with the side of the mounting ring 5 away from the diaphragm assembly 31.

[0124] In the present embodiment, as shown in Figure 3 、 Figure 4 、 Figures 6 to 8 As shown, the mounting ring 5 can be selected as a square ring-shaped frame, that is, the two ends of the mounting ring 5 extending along the first direction are respectively connected with the diaphragm assembly 31 and the edge magnetic part 23 of the magnetic circuit system 2. It can be understood that the mounting ring 5 has two sides along the second direction and two sides along the third direction, and the four sides of the mounting ring 5 away from the diaphragm assembly 31 are respectively connected with the edge magnetic guide plate 232 of the two edge magnetic parts 23 and the outer fixed part 331 of the two centering fins 33.

[0125] Optionally, the mounting ring 5 can be a plastic part or a metal part. By arranging the mounting ring 5 between the diaphragm assembly 31 and the magnetic circuit system 2, the connection of the first vibration system 3 and the magnetic circuit system 2 is realized, and the first vibration system 3 and the magnetic circuit system 2 form a loudspeaker structure through the mounting ring 5. It can be understood that the mounting ring 5 can be a frame, a shell or a housing structure used for mounting and fixing the first vibration system 3 and the magnetic circuit system 2 in the loudspeaker structure, which is not limited here.

[0126] It can be understood that the mounting ring 5 and the edge magnetic conductive plate 232 can be integrally injection molded, integrally stretch formed or adhesively connected, which is not limited herein. In the embodiment, when the mounting ring 5 is a plastic part, the mounting ring 5 and the edge magnetic conductive plate 232 are integrally injection molded. When the mounting ring 5 is a metal part, the mounting ring 5 and the edge magnetic conductive plate 232 can be integrally stretch formed, which is not limited herein.

[0127] In an embodiment, the first vibration system 3 further comprises a flexible circuit board, one end of the circuit board extends into the mounting cavity of the housing 1 and is electrically connected with the outer fixing part 331 of the centering support 33.

[0128] It can be understood that, as shown in Figure 3 , by providing the flexible circuit board, one end of the flexible circuit board extends into the mounting cavity of the housing 1 and is electrically connected with the centering support 33, so that the external circuit and the voice coil 32 are conductively communicated through the flexible circuit board. In the embodiment, the other end of the flexible circuit board is bent and extends to the outside of the housing 1 to realize conduction.

[0129] In an embodiment, as shown in Figures 1 to 5 , the vibration sound generating device 100 further comprises a housing 1, the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 are arranged in the housing 1.

[0130] It can be understood that, by providing the housing 1, the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 are accommodated and fixed in the housing 1, so that the speaker structure and the motor structure are integrated in the housing 1. The components such as the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 are installed and fixed by the housing 1.

[0131] In an embodiment, the housing 1 comprises a first shell 11 and a second shell 12, the first shell 11 comprises a top plate 111 and a support part 112 connected with the top plate 111, the top plate 111 is a metal part, the support part 112 is injection molded with the top plate 111, the top plate 111 is opposite to and spaced from the side of the first vibration system 3 away from the magnetic circuit system 2, and the support part 112 is used for supporting the first vibration system 3 and the magnetic circuit system 2, the second shell 12 is a metal part, the second shell 12 comprises a bottom plate 121 and a side wall 122 connected with the periphery of the bottom plate 121, the bottom plate 121 is opposite to and spaced from the side of the second vibration system 4 away from the magnetic circuit system 2, one end of the side wall 122 away from the bottom plate 121 is connected with the first shell 11, and the second vibration system 4 is suspended and connected with the side wall 122.

[0132] In the embodiment, as shown in Figures 1 to 5As shown, by setting the shell 1 as a two-part structure of the first shell 11 and the second shell 12, the installation and fixation of the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 are conveniently achieved. It can be understood that the first shell 11 and the second shell 12 of the shell 1 cooperatively form an installation cavity, by fixing the magnetic circuit system 2 and the first vibration system 3 to the first shell 11, suspending and connecting the second vibration system 4 to the second shell 12, and assembling the first shell 11 and the second shell 12 to realize the assembly of the vibration sound production device 100.

[0133] It can be understood that the side wall 122 of the second shell 12 is connected to the periphery of the bottom plate 121, so that the side wall 122 and the bottom plate 121 form a containing cavity with one end open, the second vibration system 4 is located in the containing cavity, and is suspended and connected to the side wall 122, so that the bottom plate 121 is opposite to the side of the second vibration system 4 away from the magnetic circuit system 2 and is spaced apart. By covering the opening of the containing cavity of the second shell 12 with the first shell 11, specifically, covering the opening of the containing cavity of the second shell 12 with the top plate 111 to realize sealed connection, that is, the end of the side wall 122 away from the bottom plate 121 is connected to the top plate 111. By setting the top plate 111 and the second shell 12 as metal pieces, the cavity volume and heat dissipation performance of the shell 1 can be increased.

[0134] In the embodiment, the top plate 111 of the first shell 11 can be selected as a metal piece, and the support part 112 can be selected as a plastic piece, and the top plate 111 and the support part 112 of the first shell 11 are integrally injection molded, that is, the support part 112 is integrally injection molded on the top plate 111, so that the connection strength and the sealing performance can be improved. It can be understood that the support part 112 is used to support the first vibration system 3 and the magnetic circuit system 2.

[0135] In an embodiment, the top plate 111 is provided with a glue grabbing hole 1111, and part of the support part 112 is embedded in the glue grabbing hole 1111.

[0136] In the embodiment, as shown in Figure 1 , Figure 3 and Figure 4 , the support part 112 is optionally integrally injection molded on the top plate 111, so that part of the support part 112 is embedded in the glue grabbing hole 1111. It can be understood that by providing the glue grabbing hole 1111 on the top plate 111, so that part of the support part 112 is embedded in the glue grabbing hole 1111 when the support part 112 is integrally injection molded on the top plate 111, the connection strength and the connection stability are further improved.

[0137] It can be understood that the outer periphery of the diaphragm assembly 31 is clamped between the support part 112 and the mounting ring 5, so that the side of the diaphragm assembly 31 away from the magnetic circuit system 2 is sealed and isolated from the front sound cavity formed by the first shell 11 and the side of the diaphragm assembly 31 facing the magnetic circuit system 2.

[0138] In the embodiment, the top plate 111 of the first shell 11 is opposite and spaced from the diaphragm assembly 31 of the first vibration system 3 to form a front sound cavity between the top plate 111 and the diaphragm assembly 31. It can be understood that, in order to ensure that the sound emitted by the vibration of the diaphragm assembly 31 is smoothly transmitted to the outside of the shell 1, one side of the support portion 112 is provided with a sound outlet portion 1123 extending to the outside of the shell 1.

[0139] It can be understood that the sound outlet portion 1123 can be a sound outlet channel or a sound outlet hole, and the sound outlet portion 1123 is in communication with the front sound cavity formed between the top plate 111 and the diaphragm assembly 31. In the embodiment, the sound outlet portion 1123 extends to the outside of the shell 1 and is located at the side edge position of the first vibration system 3 and the magnetic circuit system 2, so that the vibration sound generating device 100 forms a side sound outlet structure.

[0140] In the embodiment, the sound outlet portion 1123 of the support portion 112 of the first shell 11 extends to the outside of the side wall 122 of the second shell 12, and the side wall 122 of the second shell 12 is provided with a avoiding gap corresponding to the sound outlet portion 1123, which is not limited here.

[0141] Of course, in other embodiments, the top plate 111 of the first shell 11 is provided with a sound outlet hole, and the sound outlet hole is arranged opposite to the diaphragm assembly 31 of the first vibration system 3, so that the vibration sound generating device 100 forms a front sound outlet structure, which is not limited here.

[0142] In the embodiment, the second shell 12 can be a metal piece. The top plate 111 of the first shell 11 includes a center portion and an edge portion arranged at the outer periphery of the center portion, and the edge portion is bent and extends towards the second shell 12 relative to the center portion. The edge portion abuts against the side wall 122 of the second shell 12 to define a glue coating groove with the side wall 122 of the second shell 12. Alternatively, the edge portion can be an L-shaped structure.

[0143] In an embodiment, the glue coating groove is filled with sealing glue, and the sealing glue is solidified to form a sealing member. The sealing member is arranged around the periphery of the combined position of the edge portion and the side wall 122 of the second shell 12 to seal and connect the first shell 11 and the second shell 12. Further improve the sealing performance and waterproof performance of the shell 1, so that the vibration sound generating device 100 has good sealing effect, effectively improves the waterproof level, and realizes the IP68 waterproof requirement.

[0144] Alternatively, the sealing member can be a sealing strip, a sealing ring or other structures capable of achieving sealing effect, which is not limited here.

[0145] In an embodiment, the diaphragm assembly 31 comprises a diaphragm 311 and a reinforcing member 312, the diaphragm 311 comprises a central portion, a folded ring portion arranged around the central portion, and a fixed portion connected to the outside of the folded ring portion, and the reinforcing member 312 is arranged on the central portion, and the fixed portion is connected to the first shell 11.

[0146] In the embodiment, as shown in Figure 3 , Figure 4 , Figure 6 , the fixed portion of the diaphragm assembly 31 is clamped between the mounting ring 5 and the support portion 112. Both voice coils 32 are connected to the central portion or the reinforcing member 312. It can be understood that, in order to achieve the effect of reducing weight and improving vibration, the central portion of the diaphragm 311 is provided with a hollow hole, and the reinforcing member 312 is connected to the central portion and covers the hollow hole.

[0147] It can be understood that one end of each voice coil 32 away from the magnetic circuit system 2 is connected to the reinforcing member 312. In the embodiment, as shown in Figure 4 and Figure 6 , the reinforcing member 312 is provided with a connecting protrusion 3121 corresponding to each voice coil 32, and each connecting protrusion 3121 is connected to one end of the voice coil 32 adjacent to the diaphragm assembly 31. In this way, the position of the voice coil 32 in the magnetic gap 25 can be adjusted by the connecting protrusion 3121, so as to ensure that the voice coil 32 is in the dense area of the magnetic induction lines of the magnetic circuit system 2.

[0148] In the embodiment, the side of the diaphragm assembly 31 facing the magnetic circuit system 2 forms a rear sound cavity of the loudspeaker structure together with the first shell 11 and the second shell 12. In an embodiment, the second shell 12 is also provided with a gas leakage hole communicating with the rear sound cavity, and the vibration sound generating device 100 further comprises a gas permeable member covering the gas leakage hole.

[0149] It can be understood that, as shown in Figure 2 , by arranging the gas leakage hole, the gas leakage hole communicates with the rear sound cavity, so that the rear sound cavity can be vented, and the air pressure balance on the two sides of the diaphragm assembly 31 is ensured. In order to further improve the sound generating effect of the vibration sound generating device 100, the housing 1 is also provided with a partition member, which divides the rear sound cavity into a fixed cavity for mounting the magnetic circuit system 2 and the second vibration system 3, and a filling cavity. The sound-absorbing particles can be filled in the filling cavity through the gas leakage hole, and the gas permeable member is used to block the gas leakage hole to prevent the sound-absorbing particles from leaking.

[0150] The present application also provides an electronic device comprising the vibration sound generating device 100 described above. The specific structure of the vibration sound generating device 100 is referred to the foregoing embodiments. Since the electronic device adopts all the technical solutions of the foregoing embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be repeated here.

[0151] It can be understood that the electronic device can be a mobile phone, a wearable device, etc., which is not limited herein. The electronic device further includes a device shell, and the vibration sound device 100 is arranged in the device shell. The device shell can be a shell of the electronic device or a shell of the wearable device, etc., which is not limited herein.

[0152] The above description is only optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like made under the concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A vibration-generating sound device, characterized in that, The vibration sound-generating device includes a magnetic circuit system and a first vibration system and a second vibration system located on both sides of the magnetic circuit system along a first direction. The magnetic circuit system includes a magnetic guide plate and a common magnetic part, two side magnetic parts, and two central magnetic parts disposed on the magnetic guide plate. The common magnetic part, the two side magnetic parts, and the two central magnetic parts all extend along a second direction perpendicular to the first direction. The two central magnetic parts are located between the two side magnetic parts, and the common magnetic part is located between the two central magnetic parts, such that each central magnetic part is spaced apart from the common magnetic part and one of the side magnetic parts to form a magnetic gap. The length of the common magnetic part along the second direction is less than or equal to the length of the central magnetic part along the second direction. The first vibration system vibrates along the first direction. The first vibration system includes a diaphragm assembly, two voice coils, and two centering supports. The two voice coils are arranged in parallel and connected to the diaphragm assembly, and each voice coil is correspondingly arranged with a magnetic gap. The two centering supports are respectively arranged at both ends of the magnetic circuit system along the second direction. Each centering support includes an outer fixing part, an inner fixing part, and a spring arm part connecting the outer fixing part and the inner fixing part. The inner fixing part is connected to the voice coil and has a solder pad part thereon. The solder pad part corresponds to the end of the common magnetic part along the second direction. The two voice coils are connected in series through the solder pad part. The second vibration system vibrates along a third direction perpendicular to the first direction and the second direction. The second vibration system includes a drive coil, which has two long sides extending along the second direction, and the two long sides are respectively disposed corresponding to the two central magnetic parts. In this configuration, both of the side magnetic portions and both of the central magnetic portions are magnetized along the first direction, the common magnetic portion is magnetized along the third direction, the magnetization directions of the two central magnetic portions are opposite, the magnetization directions of adjacent side magnetic portions and central magnetic portions are opposite, and the polarity of the magnetic pole of the common magnetic portion facing the central magnetic portion is the same as the polarity of the magnetic pole of the central magnetic portion facing the driving coil.

2. The vibration-generating sound device as described in claim 1, characterized in that, The common magnetic part includes a common magnet connected to the magnetic guide plate, and the surface of the common magnetic part is formed facing the surface of the first vibration system. Each edge magnetic part includes a stacked edge magnet and an edge magnetic guide plate, and the edge magnet is connected to the magnetic guide plate. Each central magnetic part includes a stacked central magnet and a central magnetic guide plate, and the central magnet is connected to the magnetic guide plate. The common magnet is magnetized along the third direction, and both edge magnets and both central magnets are magnetized along the first direction. The magnetization directions of the two central magnets are opposite, and the magnetization directions of adjacent edge magnets and central magnets are opposite. The polarity of the magnetic pole of the common magnet facing the central magnet is the same as the polarity of the magnetic pole of the central magnet facing the drive coil. The pad portion corresponds to the end of the common magnet along the second direction. And / or, the width of the common magnetic part along the third direction is less than or equal to the width of the central magnetic part along the third direction.

3. The vibration-generating sound device as described in claim 1, characterized in that, The magnetic guide plate has openings corresponding to the two central magnetic parts, and portions of the two central magnetic parts are all disposed in the openings and are arranged corresponding to the two long sides; Alternatively, the magnetic plate may have openings corresponding to the common magnetic part and the two central magnetic parts, with portions of the common magnetic part and the two central magnetic parts disposed within the openings, and the two central magnetic parts respectively corresponding to the two long sides; wherein, there is one opening; or, there may be three openings, with ribs formed between adjacent openings, and the common magnetic part and the two central magnetic parts respectively corresponding to the three openings.

4. The vibration-generating sound device as described in claim 1, characterized in that, The magnetic guide plate has the openings corresponding to the two central magnetic parts. Each of the two central magnetic parts includes a main body part located on the side of the magnetic guide plate facing the diaphragm assembly and a protrusion extending toward the opening. The side of the protrusion facing the drive coil is flush with the side of the magnetic guide plate facing the drive coil. Alternatively, the magnetic guide plate has the opening corresponding to the common magnetic part and the two central magnetic parts. The common magnetic part and the two central magnetic parts each include a main body part located on the side of the magnetic guide plate facing the diaphragm assembly and a protrusion extending toward the opening. The side of the protrusion facing the drive coil is flush with the side of the magnetic guide plate facing the drive coil.

5. The vibration-generating sound device as described in claim 1, characterized in that, The second vibration system also includes a counterweight, and the drive coil is disposed on the counterweight.

6. The vibration-generating sound device as described in claim 5, characterized in that, The counterweight has a mounting hole, and at least a portion of the drive coil is disposed within the mounting hole.

7. The vibration-generating sound device as described in claim 6, characterized in that, The second vibration system further includes a mounting plate corresponding to the mounting hole. The mounting plate is connected to the counterweight and is located on the side of the drive coil facing away from the magnetic circuit system. The drive coil is disposed on the mounting plate. Wherein, the mounting plate is welded or bonded to the counterweight; and / or, the mounting plate is a magnetic plate; and / or, one end of the drive coil along the second direction is a wire end, the wire end protruding from the end of the mounting plate along the second direction.

8. The vibration-generating sound device as described in claim 5, characterized in that, The counterweight has bent portions extending toward the first vibration system at both ends along the third direction, so that the counterweight forms an accommodating space, at least part of the magnetic circuit system is accommodated in the accommodating space and located between the two bent portions.

9. The vibration-generating sound device as described in claim 8, characterized in that, Each of the bending portions is provided with a buffer member on the side facing the accommodating space, and the buffer member is located between the magnetic circuit system and the bending portion; And / or, the counterweight is provided with limiting notches on both sides along the second direction, and the vibration sound-generating device is provided with limiting protrusions corresponding to each of the limiting notches, and the length of each of the limiting notches along the third direction is greater than the length of each of the limiting protrusions along the third direction.

10. The vibration-generating sound device as described in claim 5, characterized in that, The vibration sound-generating device also includes a housing, and the second vibration system also includes a bending spring, one end of which is connected to the counterweight, and the other end of which is connected to the housing, so that the second vibration system is suspended inside the housing; The bending spring includes two pieces, which are disposed on both sides of the counterweight block along the third direction.

11. The vibration-generating sound device as described in claim 1, characterized in that, The vibration sound-generating device further includes a housing, within which the magnetic circuit system, the first vibration system, and the second vibration system are all housed. The housing comprises: A first housing, comprising a top plate and a support portion connected to the top plate, the top plate being a metal component, and the support portion being injection molded to the top plate. The top plate is opposite to and spaced from the side of the first vibration system facing away from the magnetic circuit system. The support portion is used to support the first vibration system and the magnetic circuit system. The second housing is a metal component. The second housing includes a base plate and a side wall connected to the periphery of the base plate. The base plate is opposite to and spaced from the side of the second vibration system that is away from the magnetic circuit system. The end of the side wall away from the base plate is connected to the first housing. The second vibration system is suspended and connected to the side wall.

12. The vibration-generating sound device as described in claim 11, characterized in that, The top plate is provided with adhesive-gripping holes, and part of the support portion is embedded in the adhesive-gripping holes; And / or, a sound outlet is provided on one side of the support portion, and the sound outlet extends to the outside of the housing; or, the top plate is provided with a sound outlet hole.

13. An electronic device, characterized in that, The electronic device includes a vibration-generating sound device as described in any one of claims 1 to 12.

Images