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, a sound production unit of the vibration sound production device comprises a first vibration system and a first magnetic circuit system, and the vibration unit comprises a vibrator assembly suspended on the periphery of the sound production unit and stator assemblies located on the two opposite sides of the sound production unit. Two driving coils of the stator assembly are located on the two sides of the sound production unit in the second direction, the stator assembly drives the vibrator assembly to vibrate in the second direction, and the projections of the first magnetic circuit system and the vibration unit in the first direction are both located in the projection range of the vibrating diaphragm assembly in the first direction; the side part of the shell is provided with a limiting part extending towards the accommodating space, and the limiting part is located on the side, facing the vibrating diaphragm assembly, of the vibrator assembly. According to the vibration sound production device, the sound production unit and the vibration unit are integrated, stacking arrangement is not needed, the functions are mutually independent and do not interfere with each other, and the thickness of a product is reduced while the performance requirements of the sound production unit and the vibration unit are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electro-acoustic transduction, 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] In the prior art, sound playing and vibration feedback of electronic devices are respectively completed by a loudspeaker and a motor, wherein the loudspeaker and the motor are independent devices. The more devices, the more difficult it is to assemble the electronic device, and the more internal space of the electronic device needs to be occupied.

[0004] In the related art, a vibration sound generating device with sound generating and vibration feedback functions is proposed, wherein a sound generating unit and a vibration unit are stacked and share a magnetic circuit system. The stacking structure in the above scheme increases the product thickness of the vibration sound generating device, which cannot meet the light and thin design requirements of the product. Moreover, the sound generating unit and the vibration unit share the magnetic circuit, which will affect the sound generating effect of the sound generating unit and the vibration feedback effect of the vibration unit to some extent, thereby affecting the sound generating effect and the vibration feedback effect of the vibration sound generating device. SUMMARY

[0005] The main purpose of the present application is to provide a vibration sound generating device and an electronic device, aiming to provide a vibration sound generating device integrating a sound generating unit and a vibration unit, which reasonably utilizes the space layout of the sound generating unit and the vibration unit, so that the sound generating unit and the vibration unit do not need to be stacked, and the functions are independent of each other and do not interfere with each other, which can ensure the sound generating effect and the vibration feedback effect of the vibration sound generating device, while reducing the thickness of the vibration sound generating device to meet the light and thin design requirements of the product.

[0006] To achieve the above purpose, the present application provides a vibration sound generating device, which comprises: a housing, the housing comprising a bottom and a side portion arranged at the periphery of the bottom, the bottom and the side portion enclosing a containing space with an opening; a sound generating unit, the sound generating unit comprising a first vibration system and a first magnetic circuit system, the first vibration system vibrating in a first direction, the first vibration system comprising a diaphragm assembly and a voice coil connected to the diaphragm assembly, the outer periphery of the diaphragm assembly being connected to one end of the side portion away from the bottom and covering the opening, the first magnetic circuit system being arranged on the bottom and located in the containing space, the first magnetic circuit system being provided with a magnetic gap, and the voice coil being arranged corresponding to the magnetic gap; and a vibration unit comprising a stator assembly located at opposite sides of the sound emitting unit and a vibrator assembly suspended from an outer periphery of the sound emitting unit, the stator assembly comprising at least two drive coils provided on the bottom portion, the at least two drive coils being located at two sides of the sound emitting unit along a second direction respectively, the stator assembly driving the vibrator assembly to vibrate along the second direction, the first direction being perpendicular to the second direction, projections of the first magnetic circuit system and the vibration unit along the first direction being located within a projection range of the diaphragm assembly along the first direction; wherein the side portion is provided with a limiting portion extending towards the accommodating space, the limiting portion being located at a side of the vibrator assembly facing the diaphragm assembly, at least part of the limiting portion being opposite to the vibrator assembly along the first direction.

[0007] In an embodiment, the side portion comprises a first vertical wall and a second vertical wall arranged along the first direction, an end of the first vertical wall away from the second vertical wall being connected to the bottom portion, the first vertical wall being bent to extend towards the accommodating space at an end adjacent to the second vertical wall to form the limiting portion, an end of the second vertical wall away from the first vertical wall being connected to an outer periphery of the diaphragm assembly.

[0008] In an embodiment, the first vertical wall is a metal piece, and the second vertical wall is a plastic piece. wherein the first vertical wall and the second vertical wall are integrally injection molded; and / or, a thickness of the second vertical wall along a direction perpendicular to the first direction is greater than a thickness of the first vertical wall along a direction perpendicular to the first direction; and / or, the first vertical wall and the bottom portion are an integrally formed structure.

[0009] In an embodiment, the bottom portion comprises a first bottom plate and a second bottom plate, the stator assembly being provided on the first bottom plate, and the first magnetic circuit system being provided on the second bottom plate. wherein the first bottom plate is a metal piece, and the second bottom plate is a plastic piece.

[0010] In an embodiment, the housing further comprises a first conductive piece embedded in the second bottom plate, and the first vibration system further comprises a centering support piece, one end of the centering support piece being connected to the voice coil and electrically connected to a lead wire of the voice coil, and the other end of the centering support piece being connected to the second bottom plate and electrically connected to the first conductive piece. and / or, the housing further comprises a second conductive piece embedded in the second bottom plate, and a lead wire of the drive coil is electrically connected to the second conductive piece. and / or, the first bottom plate and the second bottom plate are integrally injection molded. And / or, the first bottom plate and the side part are integrally formed. And / or, the second bottom plate and the magnetic conducting yoke of the first magnetic circuit system are integrally injection molded.

[0011] In an embodiment, the vibrator assembly comprises: a counterweight provided with a space for avoiding, the first magnetic circuit system being located in the space, the counterweight being suspendedly connected to the side part and surrounding the outer periphery of the first magnetic circuit system; and two second magnetic circuit systems, the two second magnetic circuit systems being provided on the counterweight and respectively located on two sides of the first magnetic circuit system along the second direction; wherein the driving coil is two, each second magnetic circuit system and the driving coil are oppositely arranged along the first direction.

[0012] In an embodiment, each second magnetic circuit system comprises a first magnet and a second magnet arranged adjacent along the second direction, and each driving coil comprises two long sides spaced and opposite along the second direction, the two long sides extending along a third direction, and the two long sides are respectively oppositely and spacedly arranged with the first magnet and the second magnet; wherein the first direction, the second direction and the third direction are perpendicularly arranged two by two.

[0013] In an embodiment, the first magnet and the second magnet are magnetized along the first direction and the magnetization directions are opposite; And / or, the counterweight is provided with a mounting groove corresponding to each second magnetic circuit system, and each second magnetic circuit system is arranged in the mounting groove; And / or, each second magnetic circuit system further comprises a first magnetic conducting plate, the first magnetic conducting plate being arranged on the counterweight and located on the side of the first magnet and the second magnet away from the driving coil.

[0014] In an embodiment, the side part has two long axis sides extending along the second direction, each long axis side is provided with the limiting part extending along a third direction, and the first direction, the second direction and the third direction are perpendicularly arranged two by two. wherein the counterweight is provided with a limiting groove corresponding to each limiting part, the extension length of the limiting groove along the second direction is greater than the extension length of the limiting part along the second direction; and / or, the ratio of the extension length of the limiting part along the second direction to the extension length of the counterweight along the second direction is greater than 0.5 and less than or equal to 1.

[0015] In an embodiment, the vibrator assembly further comprises two elastic members, each of the two elastic members is arranged on a side of the counterweight along the second direction, one end of each of the elastic members is connected with the counterweight, and the other end of each of the elastic members is connected with the side portion, so that the counterweight is suspended outside the first magnetic circuit system; wherein the two elastic members are arranged in a central symmetry with respect to a central axis of the avoiding space; and / or each of the elastic members comprises a deformation portion, and a first fixed end and a second fixed end connected to two ends of the deformation portion, the first fixed end is connected with the counterweight, and the second fixed end is connected with the side portion.

[0016] In an embodiment, the first magnetic circuit system comprises: a magnetic conductive yoke arranged on the bottom portion, the magnetic conductive yoke is provided with a receiving groove; and a central magnetic portion arranged in the receiving groove and spaced from a side wall of the receiving groove to form the magnetic gap.

[0017] In an embodiment, the magnetic conductive yoke comprises a bottom plate portion and a side plate portion arranged at a periphery of the bottom plate portion, the side plate portion extends along the first direction towards the first vibration system, so that the bottom plate portion and the side plate portion enclose the receiving groove, the central magnetic portion is connected to the bottom plate portion and spaced from the side plate portion to enclose the magnetic gap; and / or the central magnetic portion comprises a first central magnet, a central magnetic conductive plate and a second central magnet arranged in sequence along the first direction, the first central magnet is connected with the bottom of the receiving groove; wherein the first central magnet and the second central magnet are magnetized along the first direction and the magnetization directions are opposite; and / or the bottom portion and the magnetic conductive yoke are integrally formed.

[0018] In an embodiment, the first vibration system further comprises a centering support piece, one end of the centering support piece is connected with the voice coil, and the other end of the centering support piece is connected with the bottom portion; wherein the centering support piece comprises two, the two centering support pieces are arranged in a third direction and symmetrically arranged along the second direction, the first direction, the second direction and the third direction are arranged in a perpendicular manner; and / or the centering support piece comprises a first connecting portion, a second connecting portion and an elastic arm portion connecting the first connecting portion and the second connecting portion, the bottom portion is provided with a boss between the first magnetic circuit system and the vibrator assembly, the first connecting portion is connected with the boss, the first magnetic circuit system is further provided with an avoiding gap communicating with the magnetic gap, and the second connecting portion is connected with the voice coil in the magnetic gap through the avoiding gap.

[0019] In an embodiment, a first buffer structure is arranged between the vibrator assembly and the side portion, and the first buffer structure is buffer foam; And / or, a second buffer structure is arranged between the vibrator assembly and the first magnetic circuit system, and the second buffer structure is buffer foam.

[0020] In an embodiment, the diaphragm assembly includes a diaphragm and a dome arranged at the center of the diaphragm, and the outer periphery of the diaphragm is connected to the side portion away from the bottom portion and covers the opening. The first vibration system further includes a skeleton, one end of the skeleton is connected to the dome, and the other end of the skeleton is connected to the voice coil along the first direction, and the skeleton includes a top wall and a side wall connected to the periphery of the top wall, the top wall and the side wall form a cavity, the top wall is connected to the dome, the side wall extends along the first direction and is connected to the voice coil. Wherein, the side wall is provided with a through hole communicating with the cavity; and / or, the top wall extends along the surface of the dome to form an extension wall; and / or, the side wall is bent away from the top wall to form a bent portion, and the bent portion is connected to the end portion of the voice coil; and / or, the vibration sound generating device is further provided with a through hole communicating with the cavity, and the through hole penetrates the first magnetic circuit system and the bottom portion.

[0021] The present application further provides an electronic device, and the electronic device includes the vibration sound generating device.

[0022] The vibration sound generating device of the technical scheme of the present application houses the sound generating unit and the vibration unit in the shell, sets the sound generating unit as a first vibration system that vibrates along a first direction and a first magnetic circuit system that is oppositely arranged along the first direction with the first vibration system, connects the voice coil of the first vibration system with the diaphragm assembly, and sets the voice coil corresponding to the magnetic gap of the first magnetic circuit system, so as to drive the diaphragm assembly to vibrate and generate sound by the voice coil, suspends the vibrator assembly of the vibration unit outside the sound generating unit, sets at least two drive coils of the stator assembly on both sides of the sound generating unit along a second direction respectively, drives the vibrator assembly to vibrate along the second direction by the stator assembly, and sets the first direction perpendicular to the second direction, so that the projection of the first magnetic circuit system and the vibration unit along the first direction is located within the projection range of the diaphragm assembly along the first direction, thereby integrating the sound generating unit and the vibration unit, realizing the dual functions of sound playing and vibration feedback, maximizing the sound generating area of the diaphragm assembly, improving the sound generating effect of the sound generating unit, setting the sound generating unit along the first direction and the vibration unit along the second direction, and locating the sound generating unit and the vibration unit in two directions perpendicular to each other, so as to reasonably utilize the space layout, avoid stacking the sound generating unit and the vibration unit, make the functions independent and not interfere with each other, ensure the sound generating performance and vibration feedback performance of the vibration sound generating device, simplify the assembly of the vibration sound generating device, occupy less internal space of the vibration sound generating device, and reduce the thickness of the vibration sound generating device, thereby meeting the light and thin design requirements of the product. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0024] Figure 1Structure diagram of one embodiment of the vibration sound production device provided by the present application; Figure 2 Structure diagram of one embodiment of the vibration sound production device provided by the present application from another perspective; Figure 3 Structure diagram of one embodiment of the vibration sound production device provided by the present application; Figure 4 Structure diagram of one embodiment of the vibration sound production device provided by the present application; Figure 5 Structure diagram of one embodiment of the vibration sound production device provided by the present application from another perspective; Figure 6 Structure diagram of one embodiment of the vibration sound production device provided by the present application without the diaphragm assembly; Figure 7 Structure diagram of one embodiment of the vibration sound production device provided by the present application without the sound production unit; Figure 8 Structure diagram of one embodiment of the vibration sound production device provided by the present application; Figure 9 Structure diagram of one embodiment of the skeleton provided by the present application; Figure 10 Structure diagram of one embodiment of the vibration unit provided by the present application.

[0025] Explanation of reference numerals: 100, vibration sound production device; 1, shell; 11, bottom; 111, boss; 112, first conductive part; 113, second conductive part; 114, through hole; 115, first bottom plate; 116, second bottom plate; 12, side; 121, limiting part; 122, first vertical wall; 123, second vertical wall; 124, long axis side; 13, accommodating space; 14, opening; 2, sound production unit; 21, first vibration system; 211, diaphragm assembly; 2111, diaphragm; 2112, ball top; 212, voice coil; 213, centering branch; 2131, first connecting part; 2132, second connecting part; 2133, elastic arm part; 2134, first solder pad part; 2135, second solder pad part; 214, skeleton; 2141, top wall; 2142, side wall; 2143, cavity; 2144, through hole; 2145, extension wall; 2146, bending part; 22, first magnetic circuit system; 221, magnetic yoke; 2211, accommodating groove; 2212, bottom plate part; 2213, side plate part; 2214, avoidance gap; 2215, first side plate; 2216, second side plate; 222, center magnetic part; 2221, first center magnet; 2222, center magnetic plate; 2223, second center magnet; 223, magnetic gap; 3, vibration unit; 31, vibrator assembly; 311, counterweight; 3111, avoidance space; 3112, mounting groove; 3113, limiting groove; 312, second magnetic circuit system; 3121, first magnet; 3122, second magnet; 3123, first magnetic plate; 313, elastic part; 3131, deformation part; 3132, first fixed end; 3133, second fixed end; 314, first buffer structure; 315, second buffer structure; 32, stator assembly; 321, driving coil; 322, long side.

[0026] The object, functional characteristics and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below 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 of the present application. 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.

[0028] 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 specific posture (as shown in the drawings). If the specific posture changes, the directionality indications also change accordingly.

[0029] Meanwhile, "and / or" or "and / or" appearing in the whole text means that it includes three schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme.

[0030] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included 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 unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0031] The present application provides a vibration sound device 100 applied to electronic equipment. It can be understood that the electronic equipment can be a mobile phone, a game machine, a sound box, smart glasses, etc., which is not limited here.

[0032] Please refer to Figures 1 to 10 As shown in the figure, in the embodiment of the present application, the vibration sound device 100 includes a shell 1, a sound unit 2 and a vibration unit 3, the shell 1 includes a bottom 11 and a side 12 arranged on the periphery of the bottom 11, the bottom 11 and the side 12 form a containing space 13 with an opening 14, the sound unit 2 includes a first vibration system 21 and a first magnetic circuit system 22, the first vibration system 21 vibrates along a first direction, the first vibration system 21 includes a diaphragm assembly 211 and a voice coil 212 connected with the diaphragm assembly 211, the outer periphery of the diaphragm assembly 211 is connected to one end of the side 12 away from the bottom 11 and covers the opening 14, the first magnetic circuit system 22 is arranged on the bottom 11 and located in the containing space 13, the first magnetic circuit system 22 is provided with a magnetic gap 223, the voice coil 212 is arranged corresponding to the magnetic gap 223, the vibration unit 3 includes a vibrator assembly 31 suspended on the outer periphery of the sound unit 2 and a stator assembly 32 located on the opposite sides of the sound unit 2, the stator assembly 32 includes at least two drive coils 321 arranged on the bottom 11, the at least two drive coils 321 are respectively located on the two sides of the sound unit 2 along a second direction, the stator assembly 32 drives the vibrator assembly 31 to vibrate along the second direction, the first direction is perpendicular to the second direction, the projection of the first magnetic circuit system 22 and the vibration unit 3 along the first direction is located within the projection range of the diaphragm assembly 211 along the first direction; wherein the side 12 is provided with a limiting portion 121 extending towards the containing space 13, the limiting portion 121 is located on the side of the vibrator assembly 31 facing the diaphragm assembly 211, and at least part of the limiting portion 121 is opposite to the vibrator assembly 31 along the first direction.

[0033] In this embodiment, the housing 1 of the vibration sound-generating device 100 is used to install, fix, support, and protect components such as the sound-generating unit 2 and the vibration unit 3. That is, the housing 1 provides a mounting base for components such as the sound-generating unit 2 and the vibration unit 3. It can be understood that the housing 1 can be a shell, housing, box, or enclosure structure with an accommodating space 13.

[0034] Understandably, the sound-generating unit 2 can be a speaker unit, and the speaker can be a miniature speaker. The sound-generating unit 2 is used to generate or emit sound. The vibration unit 3 can be a motor structure or motor assembly, used to achieve vibration feedback function.

[0035] In this embodiment, as Figures 3 to 8 As shown, the side portion 12 of the housing 1 surrounds the periphery of the bottom 11, so that the housing 1 forms an accommodating space 13 with an opening 14 at one end. The first magnetic circuit system 22 of the sound-generating unit 2 is disposed on the bottom 11 and located within the accommodating space 13. The outer periphery of the diaphragm assembly 211 is connected to the end of the side portion 12 away from the bottom 11 and covers the opening 14.

[0036] Understandably, the stator assembly 32 of the vibration unit 3 is located at the bottom 11 and on both sides of the first magnetic circuit system 22 along the second direction. That is, at least two drive coils 321 are spaced apart at the bottom 11 and on both sides of the first magnetic circuit system 22 along the second direction. The oscillator assembly 31 is suspended and connected to the side 12 and surrounds the outer periphery of the first magnetic circuit system 22.

[0037] In this embodiment, the first vibration system 21 and the first magnetic circuit system 22 of the sound-generating unit 2 are arranged opposite each other along a first direction (e.g., a vertical direction), and the first vibration system 21 is capable of vibrating along the first direction. It is understood that by connecting the outer periphery of the diaphragm assembly 211 of the first vibration system 21 to the housing 1, and placing the first magnetic circuit system 22 within the accommodating space 13 of the housing 1, opposite and spaced from the diaphragm assembly 211, one end of the voice coil 212 is connected to the diaphragm assembly 211, and the other end of the voice coil 212 is arranged opposite to the magnetic gap 223 of the first magnetic circuit system 22. Thus, when current is passed through the voice coil 212, the voice coil 212 drives the diaphragm assembly 211 to vibrate within the magnetic field formed by the first magnetic circuit system 22, thereby generating sound.

[0038] Understandably, the sound-generating unit 2 is disposed on the housing 1 and arranged along the first direction. Optionally, the outer contour of the first vibration system 21 of the sound-generating unit 2 can be circular or square, and the outer contour of the first magnetic circuit system 22 can be circular or square, without limitation. It should be noted that the outer contour of the first vibration system 21 and the outer contour of the first magnetic circuit system 22 of the sound-generating unit 2 can be the same or different, depending on the actual application scenario, without limitation.

[0039] In the embodiment, the vibration unit 3 is arranged in the shell 1, so that the vibrator assembly 31 of the vibration unit 3 is suspended on the outer periphery of the sound production unit 2, and the stator assembly 32 is arranged on the opposite sides of the sound production unit 2. Thus, the vibrator assembly 31 is driven to vibrate in the second direction by the stator assembly 32, and the first direction is perpendicular to the second direction, so that the vibration feedback function is realized by the vibration unit 3.

[0040] Optionally, the stator assembly 32 includes at least two drive coils 321, and the at least two drive coils 321 are respectively located on the two sides of the sound production unit 2 along the second direction. Thus, the vibrator assembly 31 can be driven to vibrate in the second direction by the drive coils 321. For example, the drive coils 321 can be two, and one drive coil 321 is arranged on each side of the sound production unit 2 along the second direction. For another example, the drive coils 321 can be four, and two drive coils 321 are arranged on each side of the sound production unit 2 along the second direction.

[0041] It can be understood that, by arranging the sound production unit 2 along the first direction and arranging the vibration unit 3 along the second direction, the first magnetic circuit system 22 of the sound production unit 2 and the projection of the vibration unit 3 along the first direction are both located in the projection range of the diaphragm assembly 211 of the sound production unit 2 along the first direction. Thus, the sound production area of the diaphragm assembly 211 can be maximized, and the sound production effect of the sound production unit 2 is improved. Moreover, the above arrangement can make the sound production unit 2 and the vibration unit 3 be located in two directions perpendicular to each other. The space layout is reasonable, the assembly of the vibration sound production device 100 is simplified, less internal space of the vibration sound production device 100 is occupied, the sound production unit 2 and the vibration unit 3 do not need to be stacked, the thickness of the product is reduced, the light and thin design requirement is met, the functions are independent of each other and do not interfere with each other, and the vibration feedback function and the sound production function of the vibration sound production device 100 can be ensured at the same time.

[0042] Optionally, as shown in Figures 1 to 3 、 Figures 6 to 8 , the vibration sound production device 100 is a square structure, that is, the outer contour of the shell 1 is square. The first direction is the thickness direction or Z direction of the vibration sound production device 100, the second direction is the length direction of the vibration sound production device 100, and the third direction is the width direction of the vibration sound production device 100. Of course, the vibration sound production device 100 can also be a cylindrical structure, that is, the outer contour of the shell 1 is cylindrical. At this time, the first direction is the axial direction or vertical Z direction of the vibration sound production device 100, the second direction is the horizontal X direction of the vibration sound production device 100, and the third direction is the horizontal Y direction of the vibration sound production device 100, which is not limited herein.

[0043] In the embodiment, as shown in Figure 3 、 Figures 5 to 8As shown, the side portion 12 of the housing 1 is provided with a limiting portion 121 extending toward the accommodating space 13. Optionally, the projection of the limiting portion 121 along the first direction is at least partially located within the projection range of the oscillator assembly 31 along the first direction. It can be understood that by providing the limiting portion 121, the oscillator assembly 31 of the vibration unit 3 is limited in the first direction, thereby preventing interference or influence on the diaphragm assembly 211 during the vibration of the oscillator assembly 31, and thus improving the operational stability of the vibration sound generating device 100.

[0044] like Figures 5 to 8 As shown, the side portion 12 of the housing 1 has two long axis sides 124 extending along the second direction. Optionally, each long axis side 124 is provided with a limiting portion 121 extending along the third direction. The first direction, the second direction and the third direction are arranged perpendicularly to each other.

[0045] The vibration sound device 100 of the present application integrates the sound unit 2 and the vibration unit 3 by housing the sound unit 2 and the vibration unit 3 in the shell 1, arranging the sound unit 2 as the first vibration system 21 vibrating along the first direction and the first magnetic circuit system 22 arranged opposite to the first vibration system 21 along the first direction, so that the voice coil 212 of the first vibration system 21 is connected with the diaphragm assembly 211 and arranged corresponding to the magnetic gap 223 of the first magnetic circuit system 22, thus realizing sound by driving the diaphragm assembly 211 with the voice coil 212, suspending the vibrator assembly 31 of the vibration unit 3 outside the sound unit 2, and arranging at least two drive coils 321 of the stator assembly 32 on both sides of the sound unit 2 along the second direction, driving the vibrator assembly 31 to vibrate along the second direction with the stator assembly 32, and the first direction is perpendicular to the second direction, so that the projection of the first magnetic circuit system 22 and the vibration unit 3 along the first direction is located within the projection range of the diaphragm assembly 211 along the first direction, thus integrating the sound unit 2 and the vibration unit 3 to realize the dual functions of sound playing and vibration feedback, and the sound area of the diaphragm assembly 211 can be maximized to improve the sound effect of the sound unit 2, and the sound unit 2 is arranged along the first direction and the vibration unit 3 is arranged along the second direction, so that the sound unit 2 and the vibration unit 3 are located in two directions perpendicular to each other, which not only reasonably utilizes the space layout, but also makes the sound unit 2 and the vibration unit 3 not need to be stacked, and the functions are independent of each other and do not interfere with each other, which can ensure the sound performance and vibration feedback performance of the vibration sound device 100, and can also simplify the assembly of the vibration sound device 100, occupy less internal space of the vibration sound device 100, improve the performance of the sound unit 2 and the vibration unit 3, and at the same time, reduce the thickness of the vibration sound device 100, meet the light and thin design requirements of the product; further, the shell 1 is arranged as the bottom 11 and the side 12 arranged on the periphery of the bottom 11, so that the bottom 11 and the side 12 form the containing space 13 with the opening 14, so that the outer periphery of the diaphragm assembly 211 is connected to one end of the side 12 away from the bottom 11, covers the opening 14, and the first magnetic circuit system 22 and the stator assembly 32 are arranged on the bottom 11, and the vibrator assembly 31 is suspended outside the sound unit 2, so that the sound unit 2 and the vibration unit 3 are integrated in the shell 1, and the limiting part 121 extending towards the containing space 13 is arranged on the side 12 of the shell 1, so that the limiting part 121 is located on the side of the vibrator assembly 31 facing the diaphragm assembly 211, and at least part of the limiting part 121 is opposite to the vibrator assembly 31 along the first direction, so that the limiting part 121 limits the vibrator assembly 31 in the first direction, avoiding the interference of the diaphragm assembly 211 of the sound unit 2 when the vibrator assembly 31 vibrates along the second direction, so as to improve the running stability of the vibration sound device 100.

[0046] In an embodiment, the vibrator assembly 31 comprises a counterweight 311 and two second magnetic circuit systems 312, the counterweight 311 is provided with a clearance space 3111, the first magnetic circuit system 22 is located in the clearance space 3111, the counterweight 311 is suspendedly connected to the side portion 12 and surrounds the outer periphery of the first magnetic circuit system 22, the two second magnetic circuit systems 312 are provided on the counterweight 311 and are respectively located on two sides of the first magnetic circuit system 22 along the second direction; wherein the driving coil 321 is two, each second magnetic circuit system 312 is oppositely arranged with a driving coil 321 along the first direction.

[0047] In the present embodiment, as shown in Figures 3 to 8 、 Figure 10 , the stator assembly 32 of the vibration unit 3 optionally comprises two driving coils 321, the two driving coils 321 are respectively located on two sides of the first magnetic circuit system 22 of the sound production unit 2 along the second direction. It can be understood that by arranging the vibrator assembly 31 as the counterweight 311 and the two second magnetic circuit systems 312 provided on the counterweight 311, the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22, and the two second magnetic circuit systems 312 are respectively located on two sides of the first magnetic circuit system 22 along the second direction, so that each second magnetic circuit system 312 is oppositely arranged with a driving coil 321 along the first direction, so that by passing current in the driving coil 321, the driving coil 321 generates relative motion of the driving coil 321 and the second magnetic circuit system 312 in the magnetic field of the second magnetic circuit system 312. Since the driving coil 321 is fixed to the shell 1, the second magnetic circuit system 312 is suspended in the shell 1 through the counterweight 311, so that the second magnetic circuit system 312 drives the counterweight 311 to vibrate in the shell 1 along the second direction.

[0048] It can be understood that the arrangement of the counterweight 311 can not only make the vibrator assembly 31 have a certain weight, so as to produce obvious vibration feeling in the vibration process, but also realize the installation and fixation of the second magnetic circuit system 312 by using the counterweight 311. Optionally, the counterweight 311 is made of a material with high density. In the present embodiment, the vibrator assembly 31 can be connected to the shell 1 through a connecting piece or an elastic piece or a suspension piece, so that the vibrator assembly 31 is suspendedly arranged in the accommodating space 13 of the shell 1.

[0049] In order to ensure the weight of the counterweight 311 and that the counterweight 311 does not interfere with the sound production unit 2 in the vibration process, in the present embodiment, the counterweight 311 is provided with a clearance space 3111, and the sound production unit 2 is located in the clearance space 3111. Optionally, the clearance space 3111 is provided at the center of the counterweight 311. The clearance space 3111 can be a through hole or a through hole structure, which is not limited here.

[0050] It can be understood that the distance between the inner wall of the avoiding space 3111 of the counterweight 311 and the outer periphery of the sound generating unit 2 is greater than or equal to the vibration displacement of the counterweight 311 along the second direction, so as to prevent the vibrator assembly 31 from colliding or interfering with the outer periphery of the sound generating unit 2 when the vibrator assembly 31 vibrates along the second direction.

[0051] In the embodiment, two second magnetic circuit systems 312 are pasted or welded on both ends of the counterweight 311 along the second direction, and form a driving force with the driving coil 321 fixed on the shell 1, so as to realize the reciprocating motion of the vibrator assembly 31 along the long axis direction (i.e. the second direction).

[0052] In an embodiment, the vibrator assembly 31 further comprises two elastic members 313, which are respectively arranged on both sides of the counterweight 311 along the second direction, and one end of each elastic member 313 is connected with the counterweight 311, and the other end of each elastic member 313 is connected with the side portion 12, so that the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22.

[0053] In the embodiment, as shown in Figures 3 to 8 、 Figure 10 , the counterweight 311 and the second magnetic circuit system 312 of the vibrator assembly 31 are connected to the shell 1 through the elastic members 313 and are suspended in the accommodating space 13 of the shell 1. Optionally, the elastic members 313 include two, which are respectively arranged on both sides of the counterweight 311 along the second direction. It can be understood that one end of each elastic member 313 is connected with the counterweight 311, and the other end of each elastic member 313 is connected with the shell 1, that is, the vibrator assembly 31 is connected to the side portion 12 of the shell 1 through the elastic members 313, so that the counterweight 311 and the second magnetic circuit system 312 are suspended in the accommodating space 13, so that the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22.

[0054] It should be noted that the elastic member 313 has a deformation ability, that is, when the counterweight 311 and the second magnetic circuit system 312 of the vibrator assembly 31 vibrate along the second direction, the elastic member 313 can deform and reset. It can be understood that the elastic member 313 can be a spring, a spring or a telescopic member, which is not limited here.

[0055] It can be understood that when the vibrator assembly 31 vibrates along the second direction (i.e. the long axis direction), the driving coil 321 generates a driving force, and the elastic member 313 generates a restoring force, so as to achieve the reciprocating motion of the vibrator assembly 31. Optionally, one elastic member 313 is arranged on each end of the counterweight 311 along the second direction, so that one end of the elastic member 313 is fixed on the counterweight 311, and the other end is fixed on the shell 1.

[0056] Optionally, the two elastic members 313 are symmetrically arranged with the central axis of the avoiding space 3111 as the center. In this way, the balance of the vibration of the vibrator assembly 31 in the second direction can be ensured.

[0057] In the embodiment, the two driving coils 321 are symmetrically arranged with the center of the first magnetic circuit system 22 as the center, and the two second magnetic circuit systems 312 are symmetrically arranged with the central axis of the avoiding space 3111 as the center. In this way, the balance of the vibration of the weight 311 and the second magnetic circuit system 312 in the second direction can be ensured.

[0058] In an embodiment, each elastic member 313 comprises a deformation portion 3131, and a first fixed end 3132 and a second fixed end 3133 connected to both ends of the deformation portion 3131, the first fixed end 3132 being connected to the weight 311, and the second fixed end 3133 being connected to the side portion 12.

[0059] In the embodiment, as shown in Figures 3 to 8 、 Figure 10 , the elastic member 313 can be in the form of a spring sheet. By arranging the elastic member 313 as a deformation portion 3131, and a first fixed end 3132 and a second fixed end 3133 connected to both ends of the deformation portion 3131, the first fixed end 3132 is connected to the weight 311, and the second fixed end 3133 is connected to the shell 1.

[0060] Optionally, the deformation portion 3131 of the elastic member 313 has at least one bending. In the embodiment, the second fixed end 3133 of the elastic member 313 is arranged at an angle with the deformation portion 3131.

[0061] In an embodiment, as shown in Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 10 , a first buffer structure 314 is arranged between the vibrator assembly 31 and the shell 1. Optionally, the first buffer structure 314 is a buffer foam. It can be understood that a first buffer structure 314 is arranged between the vibrator assembly 31 and the side portion 12, so that the first buffer structure 314 can buffer the vibration of the vibrator assembly 31.

[0062] Optionally, the first buffer structure 314 is arranged on both sides of the vibrator assembly 31 in the second direction. In the embodiment, the first buffer structure 314 is arranged on the side of the first fixed end 3132 of the elastic member 313 away from the weight 311.

[0063] In an embodiment, as shown in Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 10As shown, the second buffering structure 315 is arranged between the vibrator assembly 31 and the first magnetic circuit system 22. Optionally, the second buffering structure 315 is buffering foam. It can be understood that, by arranging the second buffering structure 315, the vibration of the vibrator assembly 31 can be buffered, so as to avoid the vibrator assembly 31 from impacting the first magnetic circuit system 22.

[0064] Optionally, the second buffering structure 315 is arranged in the avoiding space 3111 of the vibrator assembly 31, and located on both sides along the second direction. In the embodiment, the second buffering structure 315 is arranged on the inner wall of the avoiding space 3111 of the counterweight 311 along the second direction.

[0065] In an embodiment, each second magnetic circuit system 312 comprises a first magnet 3121 and a second magnet 3122 arranged adjacent along the second direction, and each drive coil 321 comprises two long sides 322 spaced and opposite along the second direction, the two long sides 322 extend along a third direction, and the two long sides 322 are arranged opposite and spaced from the first magnet 3121 and the second magnet 3122, respectively; wherein the first direction, the second direction and the third direction are arranged perpendicular to each other in pairs.

[0066] In the embodiment, as shown, by arranging the second magnetic circuit system 312 as the first magnet 3121 and the second magnet 3122, the first magnet 3121 and the second magnet 3122 are arranged adjacent along the second direction, and the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 correspond to the two long sides 322 of the drive coil 321, so that the current is passed through the drive coil 321, and the magnetic field formed by cooperating with the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 acts to realize vibration. Figure 4

[0067] Optionally, the first magnet 3121 and the second magnet 3122 are magnetized along the first direction and the magnetization directions are opposite. By arranging in this way, the first magnet 3121 and the second magnet 3122 form a magnetic circuit passing through the two long sides 322 of the drive coil 321, respectively, so that the magnetic field driving force generated by the drive coil 321 can drive the vibrator assembly 31 to reciprocate.

[0068] It can be understood that the two long sides 322 of the drive coil 321 extend along the third direction, and the first direction, the second direction and the third direction are arranged perpendicular to each other in pairs. In the embodiment, the drive coil 321 is a planar coil or a flat coil.

[0069] In an embodiment, each second magnetic circuit system 312 further comprises a first magnetic conducting plate 3123, the first magnetic conducting plate 3123 is arranged on the counterweight 311 and located on the side of the first magnet 3121 and the second magnet 3122 away from the drive coil 321. ​

[0070] In the embodiment, as shown in Figure 4 magnetic circuit formed by the first magnetic plate 3123 to the first magnet 3121 and the second magnet 3122, so as to further make the magnetic flux of the magnetic circuit more pass through the two long sides 322 of the drive coil 321, improve the magnetic field driving force acting on the vibrator assembly 31, and improve the vibration feedback effect of the vibration unit 3.

[0071] In an embodiment, the counterweight 311 is provided with a mounting groove 3112 corresponding to each second magnetic circuit system 312, and each second magnetic circuit system 312 is arranged in a mounting groove 3112.

[0072] In the embodiment, as shown in Figure 4 and Figure 10 magnetic circuit formed by the first magnetic plate 3123 to the first magnet 3121 and the second magnet 3122, so as to further make the magnetic flux of the magnetic circuit more pass through the two long sides 322 of the drive coil 321, improve the magnetic field driving force acting on the vibrator assembly 31, and improve the vibration feedback effect of the vibration unit 3.

[0073] It should be noted that the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 and the first magnetic plate 3123 can be bonded. The first magnetic plate 3123 and the counterweight 311 can be an integral structure; or the first magnetic plate 3123 and the counterweight 311 are connected by bonding or welding, which is not limited here.

[0074] In an embodiment, the first magnetic circuit system 22 includes a magnetic yoke 221 and a center magnetic part 222, the magnetic yoke 221 is arranged on the bottom 11, the magnetic yoke 221 is provided with a receiving groove 2211, the center magnetic part 222 is arranged in the receiving groove 2211 and spaced from the side wall of the receiving groove 2211 to form a magnetic gap 223.

[0075] In the embodiment, as shown in Figures 3 to 8 magnetic circuit formed by the first magnetic plate 3123 to the first magnet 3121 and the second magnet 3122, so as to further make the magnetic flux of the magnetic circuit more pass through the two long sides 322 of the drive coil 321, improve the magnetic field driving force acting on the vibrator assembly 31, and improve the vibration feedback effect of the vibration unit 3.

[0076] Optionally, the magnetic yoke 221 is a U-shaped or U-basin structure, which is not limited herein. It can be understood that the end of the voice coil 212 away from the diaphragm assembly 211 is suspended in the magnetic gap 223.

[0077] In the embodiment, as shown in Figures 3 to 8 The magnetic yoke 221 includes a bottom plate portion 2212 and a side plate portion 2213 arranged at the periphery of the bottom plate portion 2212, the side plate portion 2213 extends along the first direction towards the first vibration system 21, so that the bottom plate portion 2212 and the side plate portion 2213 form a receiving groove 2211, the central magnetic portion 222 is connected to the bottom plate portion 2212 and spaced from the side plate portion 2213 to form a magnetic gap 223.

[0078] In an embodiment, the central magnetic portion 222 includes a first central magnet 2221, a central magnetic plate 2222 and a second central magnet 2223 arranged in the first direction in sequence, the first central magnet 2221 is connected to the bottom of the receiving groove 2211; wherein the first central magnet 2221 and the second central magnet 2223 are magnetized along the first direction and the magnetization directions are opposite.

[0079] In the embodiment, as shown in Figure 4 and Figure 5 By arranging the central magnetic portion 222 as a magnetic structure, the magnetic field strength of the central magnetic portion 222 is effectively improved. The first central magnet 2221, the central magnetic plate 2222 and the second central magnet 2223 of the central magnetic portion 222 are arranged in the receiving groove 2211 of the magnetic yoke 221 in the first direction in sequence.

[0080] It can be understood that the first central magnet 2221 is connected to the bottom plate portion 2212 of the magnetic yoke 221, and the periphery of the first central magnet 2221, the central magnetic plate 2222 and the second central magnet 2223 is spaced from the side plate portion 2213 of the magnetic yoke 221 to form the magnetic gap 223.

[0081] Optionally, the first central magnet 2221 and the second central magnet 2223 are magnetized along the first direction and the magnetization directions are opposite. It can be understood that the magnetic structure formed by the central magnetic portion 222 and the magnetic flux loop formed by the magnetic yoke 221 can effectively improve the magnetic field strength and improve the driving force on the voice coil 212.

[0082] In the embodiment, the central magnetic portion 222 is optionally cylindrical, and the receiving groove 2211 of the magnetic yoke 221 is optionally a cylindrical cavity. It can be understood that the central magnetic portion 222 and the side plate portion 2213 of the magnetic yoke 221 form a circular magnetic gap 223, and at this time the voice coil 212 is optionally circular, so that the enameled wire can be used most effectively.

[0083] It should be noted that the circular voice coil 212 is used in combination with the circular annular magnetic gap 223 formed by the cylindrical center magnetic portion 222 and the cylindrical side plate portion 2213, so that the magnetic gap 223 is uniform and consistent, and the magnetic field strength is effectively improved in combination with the magnetic structure of the center magnetic portion 222. It can be understood that, in a square voice coil structure used in combination with a square magnetic circuit, the magnet needs a large R angle tolerance, and the use of a circular magnet effectively avoids the R angle tolerance, so that the circular voice coil 212 is used in combination with the circular magnet, and the BL value is higher.

[0084] In order to avoid problems such as polarization or swing of the voice coil 212 during vibration, in an embodiment, as shown in Figure 3 、 Figure 6 and Figure 8 , the first vibration system 21 further includes a centering sheet 213, one end of the centering sheet 213 is connected with the voice coil 212, and the other end of the centering sheet 213 is connected with the shell 1. It can be understood that the lead of the voice coil 212 is spot-welded to the centering sheet 213, and the other end of the centering sheet 213 is connected to the external circuit through the conductive spring sheet injected in the shell 1, that is, one end of the centering sheet 213 is connected with the voice coil 212, and the other end of the centering sheet 213 is connected with the bottom 11.

[0085] In an embodiment, the side plate portion 2213 of the magnetic yoke 221 includes a first side plate 2215 and a second side plate 2216 located on opposite sides of the center magnetic portion 222 along the second direction, the opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced apart to form an avoiding gap 2214, and the first vibration system 21 further includes a centering sheet 213, one end of the centering sheet 213 passes through the avoiding gap 2214 and is connected with the voice coil 212 in the magnetic gap 223, and the other end of the centering sheet 213 is connected with the shell 1.

[0086] In the present embodiment, as shown in Figure 3 、 Figures 6 to 8 , the avoiding gap 2214 is provided in the side plate portion 2213 of the magnetic yoke 221, so as to provide installation space for the centering sheet 213 by means of the avoiding gap 2214. It can be understood that, by providing the centering sheet 213, the centering sheet 213 is used to provide the centering effect for the voice coil 212, so as to avoid problems such as polarization or swing of the voice coil 212 during vibration. At the same time, the centering sheet 213 can also be used to realize the connection and conduction of the voice coil 212 and the external circuit.

[0087] Alternatively, the centering sheet 213 includes two. The two centering sheets 213 are respectively arranged corresponding to the two avoiding gaps 2214, one end of each centering sheet 213 passes through the avoiding gap 2214 and is connected with the voice coil 212, and the other end of each centering sheet 213 is connected with the shell 1.

[0088] In the embodiment, the center magnetic part 222 is optionally in a cylindrical shape, and the side plate part 2213 of the magnetic yoke 221 is optionally in a hollow cylindrical shape, i.e., the first side plate 2215 and the second side plate 2216 of the side plate part 2213 are both in a semicircular arc shape and are symmetrically arranged. It can be understood that the two avoiding gaps 2214 are located in the diameter direction of the hollow cylindrical side plate part 2213 and correspond to each other.

[0089] Optionally, the two centering fins 213 are symmetrically arranged on opposite sides of the side plate part 2213. In the embodiment, the two centering fins 213 are spaced apart along the third direction and symmetrically arranged, i.e., the two centering fins 213 are arranged in a spaced apart manner along the third direction and symmetrically arranged along the second direction, and the first direction, the second direction and the third direction are arranged in a perpendicular manner.

[0090] In an embodiment, the centering fin 213 includes a first connecting part 2131, a second connecting part 2132, and an elastic arm part 2133 connecting the first connecting part 2131 and the second connecting part 2132, the bottom 11 is provided with a boss 111 located between the first magnetic circuit system 22 and the vibrator assembly 31, the first connecting part 2131 is connected with the boss 111, and the first magnetic circuit system 22 is further provided with an avoiding gap 2214 communicating with the magnetic gap 223, and the second connecting part 2132 passes through the avoiding gap 2214 and is connected with the voice coil 212 in the magnetic gap 223.

[0091] In the embodiment, as shown in Figure 3 , Figure 6 , Figure 8 , the elastic arm part 2133 of the centering fin 213 connects the first connecting part 2131 and the second connecting part 2132, the first connecting part 2131 of the centering fin 213 is connected with the shell 1, and the second connecting part 2132 passes through the avoiding gap 2214 and is connected with the voice coil 212 in the magnetic gap 223. It can be understood that the first connecting part 2131 of the centering fin 213 includes one, and the elastic arm part 2133 and the second connecting part 2132 include at least one. Optionally, the number of the elastic arm part 2133 is the same as the number of the second connecting part 2132. In order to improve the deformation ability of the elastic arm part 2133, the elastic arm part 2133 optionally includes at least one bending.

[0092] In the embodiment, as shown in Figure 3 , Figures 5 to 8 , the bottom 11 of the shell 1 is provided with a boss 111 located between the first magnetic circuit system 22 and the vibrator assembly 31, and the centering fin 213 is connected with the boss 111. It can be understood that the first connecting part 2131 of the centering fin 213 is connected with the boss 111.

[0093] In order to realize the connection of the voice coil 212 with the external circuit, in an embodiment, the shell 1 further comprises a first conductive piece 112 embedded in the second bottom plate 116, and the first vibration system 21 further comprises a centering branch 213, one end of the centering branch 213 is connected with the voice coil 212 and electrically connected with the lead wire of the voice coil 212, and the other end of the centering branch 213 is connected with the second bottom plate 116 and electrically connected with the first conductive piece 112.

[0094] In the present embodiment, as shown in Figure 5 and Figure 8 , the shell 1 is provided with the first conductive piece 112, one end of the centering branch 213 is connected with the voice coil 212 and electrically connected with the lead wire of the voice coil 212, and the other end of the centering branch 213 is connected with the shell 1 and electrically connected with the first conductive piece 112.

[0095] It can be understood that, as shown in Figure 8 , the centering branch 213 is provided with a first solder pad portion 2134 and a second solder pad portion 2135, the shell 1 is provided with the first conductive piece 112, the first solder pad portion 2134 is connected with the first conductive piece 112 in conduction, and the second solder pad portion 2135 is electrically connected with the lead wire of the voice coil 212. In this way, the voice coil 212 is connected with the first conductive piece 112 in conduction through the centering branch 213, and the external circuit is connected with the first conductive piece 112, so as to realize the connection of the voice coil 212 with the external circuit. Optionally, the first conductive piece 112 is embedded in the shell 1.

[0096] Optionally, the first conductive piece 112 is embedded in the bottom 11 of the shell 1. In the present embodiment, the first conductive piece 112 is embedded in the boss 111 and partially exposed on the end face where the boss 111 is connected with the first connecting portion 2131.

[0097] In an embodiment, the shell 1 forms a containing space 13 with an opening 14, the first magnetic circuit system 22 and the vibration unit 3 are both arranged in the containing space 13, and the outer periphery of the diaphragm assembly 211 is connected with the shell 1 to cover the opening 14; the vibration sound production device 100 is further provided with a through hole 114 communicating with the containing space 13, and the through hole 114 penetrates the center magnetic portion 222, the bottom plate portion 2212 and the shell 1 in sequence.

[0098] In the present embodiment, as shown in Figures 4 to 8As shown, the housing 1 has an accommodating space 13, that is, the housing 1 is a cylindrical structure with one end open and the other end closed. By connecting the outer periphery of the diaphragm assembly 211 of the sound-generating unit 2 to the housing 1 to cover the opening 14, the diaphragm assembly 211 and the housing 1 cooperate to form a sealed vibration cavity. In order to ensure the vibration performance of the diaphragm assembly 211 and maintain the air pressure balance on both sides of the diaphragm assembly 211, the vibration sound-generating device 100 is also provided with a through hole 114 communicating with the accommodating space 13. In this way, airflow can be leaked through the through hole 114 to achieve air pressure balance on both sides of the diaphragm assembly 211.

[0099] Understandably, both the first magnetic circuit system 22 and the vibration unit 3 of the sound-generating unit 2 are disposed within the accommodating space 13, such that the projections of the first magnetic circuit system 22 and the vibration unit 3 along the first direction are both located within the projection range of the diaphragm assembly 211 along the first direction. This allows the diaphragm assembly 211 to have a relatively large vibration area, and also prevents the first magnetic circuit system 22 and the vibration unit 3 of the sound-generating unit 2 from stacking, effectively reducing the size of the vibration sound-generating device 100 in the thickness direction (i.e., the first direction).

[0100] Optionally, the through hole 114 passes through the first magnetic circuit system 22 and the housing 1 in sequence, that is, the through hole 114 passes through the central magnetic part 222, the bottom plate part 2212 and the housing 1 in sequence.

[0101] In this embodiment, the housing 1 and the magnetic yoke 221 of the first magnetic circuit system 22 can be selected as an integrally formed structure, that is, the bottom 11 and the magnetic yoke 221 are integrally formed structures. Figures 2 to 4 As shown, the bottom 11 includes a first bottom plate 115 and a second bottom plate 116, the stator assembly 32 is disposed on the first bottom plate 115, and the first magnetic circuit system 22 is disposed on the second bottom plate 116.

[0102] Optionally, the first base plate 115 is a metal part, and the second base plate 116 is a plastic part. In this embodiment, the drive coil 321 of the stator assembly 32 is disposed on the first base plate 115. By making the first base plate 115 a metal part, the first base plate 115 can guide and concentrate the magnetic field formed by the second magnetic circuit system 312. Of course, in other embodiments, the first base plate 115 can also be a magnetic plate, which is not limited here.

[0103] Understandably, the first base plate 115 and the second base plate 116 of the bottom 11 can be integrally injection molded. In this embodiment, the first base plate 115 and the side portion 12 of the bottom 11 can be welded, bonded, or integrally molded, etc., and are not limited here. Optionally, the first base plate 115 and the side portion 12 are integrally molded structures.

[0104] In order to realize the connection of the driving coil 321 with the external circuit, in an embodiment, the shell 1 further comprises a second conductive part 113 embedded in the second bottom plate 116, and the lead wire of the driving coil 321 is electrically connected with the second conductive part 113. In this way, the external circuit is connected with the driving coil 321 through the second conductive part 113. Alternatively, the second conductive part 113 is embedded in the bottom 11. In the embodiment, the second conductive part 113 is embedded in the second bottom plate 116 of the bottom 11, and the first conductive part 112 is embedded in the second bottom plate 116 of the bottom 11, and the first conductive part 112 and the second conductive part 113 are arranged in a spaced manner in the second bottom plate 116 of the bottom 11.

[0105] Alternatively, the bottom 11 and the magnetic conductive yoke 221 of the first magnetic circuit system 22 are integrally injection molded. In the embodiment, the second bottom plate 116 and the magnetic conductive yoke 221 of the first magnetic circuit system 22 are integrally injection molded.

[0106] In an embodiment, the vibrator assembly 31 is provided with a limiting groove 3113 corresponding to the limiting part 121, and the limiting part 121 is arranged in the limiting groove 3113.

[0107] In the embodiment, as shown in Figure 3 、 Figures 5 to 8 、 Figure 10 , the counterweight 311 is provided with a limiting groove 3113 corresponding to each limiting part 121. Alternatively, the extension length of the limiting groove 3113 along the second direction is greater than the extension length of the limiting part 121 along the second direction. It can be understood that in this way, the limiting part 121 can be used to limit the vibrator assembly 31 in the first direction, and the limiting part 121 and the limiting groove 3113 can be used to limit the vibrator assembly 31 in the second direction, so as to avoid the vibration amplitude of the vibrator assembly 31 along the second direction being too large to collide with the first magnetic circuit system 22, thereby affecting the sound effect of the sound generating unit 2.

[0108] Alternatively, the ratio of the extension length of the limiting part 121 along the second direction to the extension length of the counterweight 311 along the second direction is greater than 0.5 and less than or equal to 1. In this way, the limiting part 121 can limit the counterweight 311 in the first direction. For example, the ratio of the extension length of the limiting part 121 along the second direction to the extension length of the counterweight 311 along the second direction can be 0.6, 0.7, 0.8, etc., which is not limited herein.

[0109] In the embodiment, as shown in Figure 5 、 Figure 6 、 Figure 10As shown, the counterweight 311 of the vibrator assembly 31 is provided with a groove corresponding to the boss 111 on the bottom 11 of the shell 1, at least part of the boss 111 is located in the groove, and the extension length of the groove along the second direction is greater than the extension length of the boss 111 along the second direction. It can be understood that, in this way, the vibration amplitude of the vibrator assembly 31 in the second direction can be further limited, so as to avoid the vibration amplitude of the vibrator assembly 31 in the second direction being too large to collide with the first magnetic circuit system 22, thereby affecting the sound effect of the sound generating unit 2.

[0110] In an embodiment, the side portion 12 comprises a first vertical wall 122 and a second vertical wall 123 arranged along the first direction, one end of the first vertical wall 122 away from the second vertical wall 123 is connected with the bottom 11, and the other end of the first vertical wall 122 adjacent to the second vertical wall 123 is bent and extended towards the accommodating space 13 to form a limiting portion 121, and one end of the second vertical wall 123 away from the first vertical wall 122 is connected with the outer periphery of the diaphragm assembly 211.

[0111] In the present embodiment, as shown, Figures 1 to 6 by arranging the side portion 12 of the shell 1 as a first vertical wall 122 and a second vertical wall 123 arranged along the first direction, and bending and extending the first vertical wall 122 at the end adjacent to the second vertical wall 123 to form a limiting portion 121 towards the accommodating space 13, the limiting portion 121 formed by the bending of the first vertical wall 122 can limit the vibrator assembly 31 in the first direction, and the second vertical wall 123 can support and install the diaphragm assembly 211 to ensure the vibration of the diaphragm assembly 211.

[0112] It can be understood that the first vertical wall 122 and the second vertical wall 123 of the side portion 12 of the shell 1 can be adhesively connected, welded or integrally formed, which is not limited herein. Alternatively, the first vertical wall 122 is a metal piece and the second vertical wall 123 is a plastic piece. In the present embodiment, the first vertical wall 122 and the second vertical wall 123 are integrally injection molded.

[0113] In the present embodiment, the first vertical wall 122 of the side portion 12 and the bottom 11 can be adhesively connected, welded or integrally formed, which is not limited herein. Alternatively, the first vertical wall 122 and the bottom 11 are integrally formed.

[0114] Alternatively, the thickness of the second vertical wall 123 perpendicular to the first direction is greater than the thickness of the first vertical wall 122 perpendicular to the first direction. It can be understood that, in this way, the side of the second vertical wall 123 towards the accommodating space 13 protrudes out of the first vertical wall 122, so as to limit the vibrator assembly 31 in the first direction by the side of the second vertical wall 123 protruding towards the accommodating space 13.

[0115] In an embodiment, the diaphragm assembly 211 comprises a diaphragm 2111 and a dome 2112 arranged at the center of the diaphragm 2111, and the outer periphery of the diaphragm 2111 is connected to the end of the side portion 12 away from the bottom portion 11 and covers the opening 14; the first vibration system 21 further comprises a skeleton 214, one end of the skeleton 214 is connected to the dome 2112, and the other end of the skeleton 214 is connected to the voice coil 212 along the first direction.

[0116] In the embodiment, as shown in Figures 3 to 6 、 Figure 9 , by arranging the skeleton 214, the connection between the voice coil 212 and the diaphragm assembly 211 can be realized by using the skeleton 214, and the position of the voice coil 212 in the magnetic gap 223 can be adjusted by using the skeleton 214, so that the voice coil 212 is in a suitable position in the magnetic gap 223.

[0117] It can be understood that the diaphragm 2111 and the dome 2112 of the diaphragm assembly 211 can be arranged integrally or separately, which is not limited here.

[0118] In the embodiment, as shown in Figures 3 to 6 、 Figure 9 , the skeleton 214 comprises a top wall 2141 and a side wall 2142 connected to the periphery of the top wall 2141, the top wall 2141 and the side wall 2142 form a cavity 2143, the top wall 2141 is connected to the dome 2112, and the side wall 2142 extends along the first direction and is connected to the voice coil 212.

[0119] It can be understood that by connecting the top wall 2141 of the skeleton 214 to the dome 2112 of the diaphragm assembly 211, the connection area can be effectively increased and the connection stability can be improved. In order to further increase the connection area of the top wall 2141 and the dome 2112 and improve the connection stability, in the embodiment, the top wall 2141 extends along the surface of the dome 2112 to form an extension wall 2145, which can increase the contact area between the skeleton 214 and the dome 2112, thereby improving the running stability of the first vibration system 21. The side wall 2142 is connected to the voice coil 212 to improve the connection stability. In order to further increase the connection area of the side wall 2142 and the voice coil 212 and improve the connection stability, the end of the side wall 2142 away from the top wall 2141 is bent to form a bent portion 2146, and the bent portion 2146 is connected to the end of the voice coil 212. At the same time, the cavity 2143 formed by the top wall 2141 and the side wall 2142 avoids and accommodates the first magnetic circuit system 22.

[0120] In the embodiment, as shown in Figure 3 、 Figure 5 、 Figure 6 、 Figure 9As shown, the side wall 2142 is provided with a through hole 2144 communicating with the cavity 2143. In this way, the cavity 2143 and the accommodating space 13 can be communicated through the through hole 2144, thereby ensuring the smoothness of the airflow on the side of the diaphragm assembly 211 facing the accommodating space 13. In order to further ensure the air pressure balance in the accommodating space 13, the vibration sound generating device 100 is also provided with a through hole 114 communicating with the cavity 2143, and the through hole 114 penetrates the first magnetic circuit system 22 and the shell 1, that is, the through hole 114 penetrates the first magnetic circuit system 22 and the bottom 11.

[0121] In the vibration sound generating device 100 of the present application, the diaphragm assembly 211 of the sound generating unit 2 occupies the entire front surface of the vibration sound generating device 100, and the outer periphery of the diaphragm assembly 211 is fixed on the shell 1. The driving system (i.e., the first magnetic circuit system 22) of the sound generating unit 2 is located at the central part of the projection plane of the diaphragm assembly 211. The other space in the projection range of the diaphragm assembly 211 is occupied by the vibration unit 3, forming a middle hollow vibration unit 3.

[0122] It can be understood that the diaphragm assembly 211 of the sound generating unit 2 vibrates in the Z direction, and when the diaphragm assembly 211 vibrates outwardly, it needs a certain space. When the diaphragm assembly 211 vibrates inwardly, the vibrator assembly 31 of the vibration unit 3 needs a certain height to avoid. This height avoidance is achieved by the middle hollow annular space in the vibrator assembly 31, avoiding the first magnetic circuit system 22, so as to avoid the stacking of the vibration unit 3 and the sound generating unit 2 in the first direction.

[0123] In this embodiment, since the diaphragm assembly 211 of the sound generating unit 2 occupies the entire front surface of the vibration sound generating device 100, the vibration area is maximized, thereby improving the sound generating effect of the sound generating unit 2. At the same time, the vibration space of the vibrator assembly 31 of the vibration unit 3 reasonably avoids the lower vibration space of the diaphragm assembly 211, and effectively utilizes the annular space in the projection of the diaphragm assembly 211, which can ensure the vibration feedback effect of the vibration unit 3.

[0124] 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.

[0125] It can be understood that the electronic device comprises a device shell provided with a mounting cavity and a sound outlet hole communicating with the mounting cavity, the vibration sound generating device 100 is arranged in the mounting cavity of the device shell and forms a front sound cavity communicating with the sound outlet hole, and the diaphragm assembly 211 of the vibration sound generating device 100 faces the front sound cavity.

[0126] The above merely describes optional embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the concept of the present application, or direct / indirect application in other related technical fields using the content of the present application specification and drawings are 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 housing, the housing including a bottom and a side portion disposed around the periphery of the bottom, the bottom and the side portion enclosing an accommodating space having an opening; A sound-generating unit, comprising a first vibration system and a first magnetic circuit system, wherein the first vibration system vibrates along a first direction, the first vibration system includes a diaphragm assembly and a voice coil connected to the diaphragm assembly, the outer periphery of the diaphragm assembly is connected to the side portion away from the bottom and covers the opening, the first magnetic circuit system is disposed at the bottom and located within the accommodating space, the first magnetic circuit system has a magnetic gap, and the voice coil is correspondingly disposed with respect to the magnetic gap; and The vibration unit includes an oscillator assembly suspended on the outer periphery of the sound-generating unit and a stator assembly located on opposite sides of the sound-generating unit. The stator assembly includes at least two drive coils disposed at the bottom, with the at least two drive coils respectively located on both sides of the sound-generating unit along a second direction. The stator assembly drives the oscillator assembly to vibrate along the second direction. The first direction is perpendicular to the second direction. The projections of the first magnetic circuit system and the vibration unit along the first direction are both located within the projection range of the diaphragm assembly along the first direction. The side portion is provided with a limiting portion extending toward the accommodating space. The limiting portion is located on the side of the oscillator assembly facing the diaphragm assembly. Along the first direction, at least a portion of the limiting portion is opposite to the oscillator assembly.

2. The vibration-generating sound device as described in claim 1, characterized in that, The side portion includes a first vertical wall and a second vertical wall arranged along the first direction. The end of the first vertical wall away from the second vertical wall is connected to the bottom. The end of the first vertical wall adjacent to the second vertical wall bends and extends toward the accommodating space to form the limiting portion. The end of the second vertical wall away from the first vertical wall is connected to the outer periphery of the diaphragm assembly.

3. The vibration-generating sound device as described in claim 2, characterized in that, The first vertical wall is a metal part, and the second vertical wall is a plastic part; Wherein, the first vertical wall and the second vertical wall are integrally injection molded; and / or, the thickness of the second vertical wall along the direction perpendicular to the first direction is greater than the thickness of the first vertical wall along the direction perpendicular to the first direction; and / or, the first vertical wall and the bottom are integrally molded structures.

4. The vibration-generating sound device as described in claim 1, characterized in that, The bottom includes a first base plate and a second base plate, the stator assembly is disposed on the first base plate, and the first magnetic circuit system is disposed on the second base plate; The first base plate is a metal part, and the second base plate is a plastic part.

5. The vibration-generating sound device as described in claim 4, characterized in that, The housing further includes a first conductive element embedded in the second base plate, and the first vibration system further includes a centering support plate. One end of the centering support plate is connected to the voice coil and electrically connected to the lead wire of the voice coil. The other end of the centering support plate is connected to the second base plate and electrically connected to the first conductive element. And / or, the housing further includes a second conductive element embedded in the second base plate, and the lead of the drive coil is electrically connected to the second conductive element; And / or, the first base plate and the second base plate are integrally injection molded; And / or, the first base plate and the side portion are integrally formed structures; And / or, the second base plate and the magnetic yoke of the first magnetic circuit system are integrally injection molded.

6. The vibration-generating sound device as described in claim 1, characterized in that, The oscillator assembly includes: A counterweight, wherein the counterweight has a clearance space, the first magnetic circuit system is located within the clearance space, and the counterweight is suspended from the side and surrounds the outer periphery of the first magnetic circuit system; and Two second magnetic circuit systems are disposed on the counterweight and are respectively located on both sides of the first magnetic circuit system along the second direction; There are two drive coils, and each of the second magnetic circuit systems is arranged opposite to one of the drive coils along the first direction.

7. The vibration-generating sound device as described in claim 6, characterized in that, Each of the second magnetic circuit systems includes a first magnet and a second magnet arranged adjacent to each other along the second direction, and each of the driving coils includes two long sides spaced apart and opposite each other along the second direction, the two long sides extending along the third direction, and the two long sides being opposite to and spaced apart from the first magnet and the second magnet, respectively; The first direction, the second direction, and the third direction are arranged perpendicularly to each other.

8. The vibration-generating sound device as described in claim 7, characterized in that, Both the first magnet and the second magnet are magnetized along the first direction but in opposite directions; And / or, the counterweight is provided with a mounting slot for each of the second magnetic circuit systems, and each of the second magnetic circuit systems is disposed in one of the mounting slots; And / or, each of the second magnetic circuit systems further includes a first magnetic guide plate, which is disposed on the counterweight and located on the side of the first magnet and the second magnet facing away from the drive coil.

9. The vibration-generating sound device as described in claim 6, characterized in that, The side portion has two long axis sides extending along the second direction, and each of the long axis sides is provided with the limiting portion extending along the third direction. The first direction, the second direction and the third direction are arranged perpendicularly to each other. Wherein, the counterweight is provided with a limiting groove for each of the limiting parts, and the extension length of the limiting groove along the second direction is greater than the extension length of the limiting part along the second direction; and / or, the ratio of the extension length of the limiting part along the second direction to the extension length of the counterweight along the second direction is greater than 0.5 and less than or equal to 1.

10. The vibration-generating sound device as described in claim 6, characterized in that, The oscillator assembly further includes two elastic elements, which are respectively disposed on both sides of the counterweight along the second direction. One end of each elastic element is connected to the counterweight, and the other end of each elastic element is connected to the side portion, so that the counterweight is suspended on the outer periphery of the first magnetic circuit system. The two elastic elements are arranged in a centrally symmetrical manner about the central axis of the clearance space; and / or, each elastic element includes a deformation part and a first fixed end and a second fixed end connected to both ends of the deformation part, the first fixed end being connected to the counterweight block and the second fixed end being connected to the side portion.

11. The vibration-generating sound device as described in claim 1, characterized in that, The first magnetic circuit system includes: A magnetically conductive yoke, wherein the magnetically conductive yoke is disposed at the bottom and has a receiving groove; and A central magnetic part is disposed within the receiving groove and spaced apart from the sidewall of the receiving groove to form the magnetic gap.

12. The vibration-generating sound device as described in claim 11, characterized in that, The magnetic yoke includes a base plate and a side plate disposed around the periphery of the base plate. The side plate extends along the first direction toward the direction close to the first vibration system, so that the base plate and the side plate surround to form the receiving groove. The central magnetic part is connected to the base plate and spaced apart from the side plate to surround to form the magnetic gap. And / or, the central magnetic part includes a first central magnet, a central magnetic plate and a second central magnet stacked sequentially along the first direction, the first central magnet being connected to the bottom of the receiving groove; wherein, the first central magnet and the second central magnet are both magnetized along the first direction and the magnetization directions are opposite; And / or, the bottom and the magnetic yoke are integrally formed.

13. The vibration-generating sound device as described in claim 1, characterized in that, The first vibration system further includes a centering support, one end of which is connected to the voice coil, and the other end of which is connected to the bottom. The centering support includes two pieces, which are arranged at intervals along a third direction and symmetrically arranged along the second direction. The first direction, the second direction, and the third direction are arranged perpendicularly to each other. Alternatively, the centering support includes a first connecting part, a second connecting part, and a spring arm connecting the first connecting part and the second connecting part. The bottom is provided with a boss located between the first magnetic circuit system and the vibrator assembly. The first connecting part is connected to the boss. The first magnetic circuit system is also provided with a clearance gap communicating with the magnetic gap. The second connecting part passes through the clearance gap and connects to the voice coil in the magnetic gap.

14. The vibration-generating sound device as described in claim 1, characterized in that, A first buffer structure, which is a buffer foam, is provided between the oscillator assembly and the side portion. And / or, a second buffer structure is provided between the oscillator assembly and the first magnetic circuit system, the second buffer structure being buffer foam.

15. The vibration-generating sound device as described in claim 1, characterized in that, The diaphragm assembly includes a diaphragm and a dome located at the center of the diaphragm. The outer periphery of the diaphragm is connected to the side portion away from the bottom and covers the opening. The first vibration system further includes a frame, one end of which is connected to the dome, and the other end of which is connected to the voice coil along the first direction. The frame includes a top wall and a side wall connected to the periphery of the top wall. The top wall and the side wall enclose a cavity. The top wall is connected to the dome, and the side wall extends along the first direction and is connected to the voice coil. The sidewall is provided with a through hole communicating with the cavity; and / or, the top wall extends along the surface of the dome to form an extension wall; and / or, one end of the sidewall away from the top wall is bent and extended to form a bent portion, the bent portion being connected to the end of the voice coil; and / or, the vibration sound-generating device is further provided with a through hole communicating with the cavity, the through hole being connected to the first magnetic circuit system and the bottom.

16. An electronic device, characterized in that, The electronic device includes a vibration-generating sound device as described in any one of claims 1 to 15.

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