Vibration sound-generating devices and electronic equipment

Abstract

This invention discloses a vibration-generating sound device and an electronic device, relating to the field of electroacoustic transduction technology. In this vibration-generating sound device, the side plate portion of the magnetic yoke of the sound-generating unit includes a first side plate and a second side plate on opposite sides along a second direction. The opposite ends of the first and second side plates are spaced apart to form clearance gaps. Two centering supports of the first vibration system are respectively disposed corresponding to the two clearance gaps. The two ends of each centering support are connected to a voice coil and a housing, respectively. The vibration unit includes a vibrator assembly suspended on the outer periphery of the sound-generating unit and stator assemblies located on opposite sides of the sound-generating unit. At least two drive coils of the stator assemblies are located on opposite sides of the sound-generating unit along the second direction. This invention integrates the sound-generating unit and the vibration unit into one unit, eliminating the need for stacking. Their functions are independent and do not interfere with each other, satisfying the performance requirements of both the sound-generating unit and the vibration unit while reducing the thickness of the vibration-generating sound device.

Description

TECHNICAL FIELD

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

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

[0003] 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. More devices are not conducive to the assembly of electronic devices, and at the same time, 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 set of magnetic circuit systems. The stacked structure in the above scheme increases the product thickness of the vibration sound generating device, and 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 a certain 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, which aims to provide a vibration sound generating device integrating a sound generating unit and a vibration unit. The vibration sound generating device rationally 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, and at the same time, reduce the thickness of the vibration sound generating device, and 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:

[0007] a housing;

[0008] The sound generating unit is arranged in the shell, and the sound generating unit comprises a first vibration system vibrating in a first direction and a first magnetic circuit system arranged opposite to the first vibration system in the first direction. The first magnetic circuit system comprises a magnetic yoke and a central magnetic part. The magnetic yoke comprises a bottom plate part and a side plate part extending in the first direction towards the first vibration system. The central magnetic part is arranged on the bottom plate part and spaced from the side plate part to form a magnetic gap. The side plate part comprises a first side plate and a second side plate on opposite sides of the central magnetic part in a second direction. The opposite ends of the first side plate and the second side plate are respectively spaced to form an avoiding gap. The first vibration system comprises a diaphragm assembly, a voice coil and two centering bridges. The voice coil is connected to the diaphragm assembly and arranged corresponding to the magnetic gap. Two centering bridges are arranged corresponding to the avoiding gap respectively. One end of each centering bridge is connected to the voice coil through the avoiding gap. The other end of each centering bridge is connected to the shell.

[0009] The vibration unit is arranged in the shell. The vibration unit comprises a vibrator assembly suspended on the outer periphery of the sound generating unit and a stator assembly on opposite sides of the sound generating unit. The stator assembly comprises at least two drive coils arranged on the shell. The at least two drive coils are respectively arranged on the two sides of the sound generating unit in a second direction. The stator assembly drives the vibrator assembly to vibrate in the second direction. The first direction is perpendicular to the second direction.

[0010] The projection of the first magnetic circuit system and the vibration unit in the first direction is located in the projection range of the diaphragm assembly in the first direction.

[0011] In an embodiment, the shell forms a containing space with an opening. The first magnetic circuit system and the vibration unit are arranged in the containing space. The outer periphery of the diaphragm assembly is connected to the shell to cover the opening.

[0012] The vibration sound generating device further comprises a through hole communicating with the containing space. The through hole penetrates the central magnetic part, the bottom plate part and the shell in sequence.

[0013] In an embodiment, the central magnetic part comprises a first central magnet, a central magnetic plate and a second central magnet arranged in sequence in the first direction. The first central magnet is connected to the bottom plate part.

[0014] The first central magnet and the second central magnet are magnetized in the first direction and the magnetization directions are opposite.

[0015] In an embodiment, the center magnetic part is in a cylindrical shape, and the first side plate and the second side plate are each in a semicircular arc shape and are symmetrically arranged.

[0016] In an embodiment, the shell includes a bottom and a side arranged at a periphery of the bottom, the bottom and the side form a containing space with an opening, the first magnetic circuit system is arranged on the bottom and located in the containing space, an outer periphery of the diaphragm assembly is connected to an end of the side away from the bottom and covers the opening, the driving coil is two, the two driving coils are arranged on the bottom and are respectively located on two sides of the first magnetic circuit system along the second direction, and the vibrator assembly is suspendedly connected to the side and is arranged around an outer periphery of the first magnetic circuit system.

[0017] The bottom is provided with a boss between the first magnetic circuit system and the vibrator assembly, and the centering sheet is connected with the boss.

[0018] In an embodiment, the shell further includes a first conductive member embedded in the boss, one end of the centering sheet is connected with the voice coil and is electrically connected with a lead wire of the voice coil, and the other end of the centering sheet is connected with the boss and is electrically connected with the first conductive member.

[0019] And / or, the shell further includes a second conductive member embedded in the bottom, and a lead wire of the driving coil is electrically connected with the second conductive member.

[0020] And / or, the bottom and the magnetic yoke are integrally injection molded.

[0021] In an embodiment, the two centering sheets are arranged in a third direction and are symmetrically arranged along the second direction, and the first direction, the second direction and the third direction are arranged perpendicular to each other.

[0022] And / or, each centering sheet includes a first connecting part, a second connecting part and an elastic arm part connecting the first connecting part and the second connecting part, the shell is provided with a boss between the first magnetic circuit system and the vibrator assembly, the first connecting part is connected with the boss, and the second connecting part is connected with the voice coil in the magnetic gap through the avoiding gap.

[0023] In an embodiment, the vibrator assembly includes:

[0024] a weight block provided with an avoiding space, the first magnetic circuit system is located in the avoiding space, and the weight block is suspended around an outer periphery of the first magnetic circuit system; and

[0025] two second magnetic circuit systems, two second magnetic circuit systems are arranged on the counterweight and are respectively located on two sides of the first magnetic circuit system along the second direction;

[0026] wherein the driving coils are two, each second magnetic circuit system is oppositely arranged with a driving coil along the first direction.

[0027] 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 extend along a third direction, and the two long sides are respectively oppositely and spacedly arranged with the first magnet and the second magnet;

[0028] wherein the first direction, the second direction and the third direction are perpendicularly arranged two by two.

[0029] In an embodiment, 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;

[0030] and / or, each second magnetic circuit system further comprises a first magnetic conducting plate, the first magnetic conducting plate is arranged on the counterweight and is located on a side of the first magnet and the second magnet away from the driving coil;

[0031] and / or, the first magnet and the second magnet are magnetized along the first direction and the magnetization directions are opposite.

[0032] In an embodiment, the vibrator assembly further comprises two elastic members, two elastic members are respectively arranged on two sides of the counterweight along the second direction, one end of each elastic member is connected with the counterweight, and the other end of each elastic member is connected with the shell, so that the counterweight is suspended on the outer periphery of the first magnetic circuit system;

[0033] wherein the two elastic members are centrally symmetrically arranged with a central axis of the avoiding space; and / or, each elastic member comprises a deformation part and a first fixed end and a second fixed end connected to two ends of the deformation part, the first fixed end is connected with the counterweight, and the second fixed end is connected with the shell.

[0034] In an embodiment, a first buffer structure is arranged between the vibrator assembly and the shell, and the first buffer structure is buffer foam;

[0035] 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.

[0036] In an embodiment, the diaphragm assembly comprises a diaphragm and a dome arranged at the center of the diaphragm, and the outer periphery of the diaphragm is connected to the shell.

[0037] The first vibration system further comprises 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.

[0038] In an embodiment, the skeleton comprises 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.

[0039] In an embodiment, 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 end of the side wall away from the top wall is bent to form a bending part, and the bending part is connected to the end of the voice coil.

[0040] The present application further provides an electronic device comprising the vibration sound generating device.

[0041] 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 and the magnetic gap of the first magnetic circuit system correspondingly, 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 and the second direction perpendicular to each other, 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, set the sound generating unit and the vibration unit without stacking, 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 to meet the light and thin design requirements of the product. BRIEF DESCRIPTION OF DRAWINGS

[0042] 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 drawings shown without creative labor.

[0043] Figure 1 Structure diagram of an embodiment of the vibration sound generating device provided by the present application;

[0044] Figure 2 Structure diagram of another view of an embodiment of the vibration sound generating device provided by the present application;

[0045] Figure 3 Exploded diagram of an embodiment of the vibration sound generating device provided by the present application;

[0046] Figure 4 Sectional diagram of an embodiment of the vibration sound generating device provided by the present application;

[0047] Figure 5 Sectional diagram of another view of an embodiment of the vibration sound generating device provided by the present application;

[0048] Figure 6 Structure diagram of an embodiment of the vibration sound generating device provided by the present application without the diaphragm assembly;

[0049] Figure 7 Structure diagram of an embodiment of the vibration sound generating device provided by the present application without the sound generating unit;

[0050] Figure 8 Partial structure diagram of an embodiment of the vibration sound generating device provided by the present application;

[0051] Figure 9 Structure diagram of an embodiment of the skeleton provided by the present application;

[0052] Figure 10 Structure diagram of an embodiment of the vibration unit provided by the present application.

[0053] Explanation of reference numerals:

[0054] 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.

[0055] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0056] 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.

[0057] 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.

[0058] Meanwhile, the meaning of "and / or" or "and / or" appearing in the full text is that three schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B are satisfied at the same time.

[0059] 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 with "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the realization of the 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, nor within the protection scope required by the present application.

[0060] The present application provides a vibration sound device 100 applied to an electronic device. It can be understood that the electronic device can be a mobile phone, a game machine, a sound box, smart glasses, etc., which is not limited here.

[0061] Please refer to Figures 1 to 10As shown, in the embodiment of the present application, the vibration sound production device 100 comprises a shell 1, a sound production unit 2 and a vibration unit 3, the sound production unit 2 is arranged in the shell 1, the sound production unit 2 comprises a first vibration system 21 vibrating along a first direction and a first magnetic circuit system 22 arranged opposite to the first vibration system 21 along the first direction, the first magnetic circuit system 22 comprises a magnetic yoke 221 and a center magnetic part 222, the magnetic yoke 221 comprises a bottom plate part 2212 and a side plate part 2213 extending along the first direction towards the direction close to the first vibration system 21, the center magnetic part 222 is arranged on the bottom plate part 2212 and spaced from the side plate part 2213 to form a magnetic gap 223, the side plate part 2213 comprises a first side plate 2215 and a second side plate 2216 located on opposite sides of the center magnetic part 222 along a second direction, opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced to form an avoiding gap 2214, the first vibration system 21 comprises a diaphragm assembly 211, a voice coil 212 and two centering branches 213, the voice coil 212 is connected to the diaphragm assembly 211 and arranged corresponding to the magnetic gap 223, the two centering branches 213 are arranged corresponding to the two avoiding gaps 2214 respectively, one end of each centering branch 213 passes through the avoiding gap 2214 and is connected to the voice coil 212, the other end of each centering branch 213 is connected to the shell 1, the vibration unit 3 is arranged in the shell 1, the vibration unit 3 comprises a vibrator assembly 31 suspended on the outer periphery of the sound production unit 2 and a stator assembly 32 located on opposite sides of the sound production unit 2, the stator assembly 32 comprises at least two drive coils 321 arranged on the shell 1, the at least two drive coils 321 are respectively located on the two sides of the sound production unit 2 along the 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; wherein 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.

[0062] In the embodiment, the shell 1 of the vibration sound production device 100 is used to mount, fix, support and protect the sound production unit 2 and the vibration unit 3 and other components, that is, the shell 1 provides a mounting basis for the sound production unit 2 and the vibration unit 3 and other components. It can be understood that the shell 1 can be a structure such as a housing, a shell, a box or a case with a containing space 13.

[0063] It can be understood that the sound production unit 2 can be a loudspeaker sound production unit, and the loudspeaker can be a micro loudspeaker. The sound production unit 2 is used to realize sound production or sound emission. The vibration unit 3 can be a motor structure or a motor assembly, which is used to realize a vibration feedback function.

[0064] In the embodiment, the first vibration system 21 and the first magnetic circuit system 22 of the sound production unit 2 are oppositely arranged along a first direction (for example, a vertical direction), and the first vibration system 21 is capable of vibrating along the first direction. It can be understood that by connecting the outer periphery of the diaphragm assembly 211 of the first vibration system 21 to the shell 1, and arranging the first magnetic circuit system 22 in the accommodating space 13 of the shell 1 and opposite to the diaphragm assembly 211 with a spacing, one end of the voice coil 212 is connected to the diaphragm assembly 211, and the other end of the voice coil 212 is oppositely arranged to the magnetic gap 223 of the first magnetic circuit system 22, so that the voice coil 212 is passed through the current, and the voice coil 212 drives the diaphragm assembly 211 to vibrate in the magnetic field formed by the first magnetic circuit system 22 to realize sound production.

[0065] It can be understood that the sound production unit 2 is arranged in the shell 1 and along the first direction. Optionally, the outer shape of the first vibration system 21 of the sound production unit 2 can be circular or square, and the outer shape of the first magnetic circuit system 22 can be circular or square, which is not limited herein. It should be noted that the outer shape of the first vibration system 21 of the sound production unit 2 can be the same as or different from the outer shape of the first magnetic circuit system 22, which is selected according to the actual application scene, and is not limited herein.

[0066] In the embodiment, as shown in Figures 3 to 8 , the first magnetic circuit system 22 is arranged as a magnetic yoke 221 and a central magnetic part 222, and the accommodating groove 2211 is arranged in the magnetic yoke 221, the central magnetic part 222 is arranged in the accommodating groove 2211 and spaced from the side wall of the accommodating groove 2211 to form the magnetic gap 223. It can be understood that the magnetic yoke 221 of the first magnetic circuit system 22 of the sound production unit 2 is formed with the accommodating groove 2211, which can be used to install and limit the central magnetic part 222, and the central magnetic part 222 and the side wall of the accommodating groove 2211 of the magnetic yoke 221 can be used to form the magnetic gap 223.

[0067] Optionally, the magnetic yoke 221 is a U-shaped or U-shaped 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.

[0068] In the embodiment, as shown in Figures 3 to 8 , the magnetic yoke 221 includes a bottom plate part 2212 and a side plate part 2213 arranged at the periphery of the bottom plate part 2212, the side plate part 2213 extends along the first direction towards the first vibration system 21 to form the accommodating groove 2211 with the bottom plate part 2212 and the side plate part 2213, and the central magnetic part 222 is connected to the bottom plate part 2212 and spaced from the side plate part 2213 to form the magnetic gap 223.

[0069] In order to avoid the 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 comprises a centering branch 213, one end of the centering branch 213 is connected with the voice coil 212, and the other end of the centering branch 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 branch 213, and the other end of the centering branch 213 is connected to the external circuit through the conductive spring sheet injected in the shell 1.

[0070] It can be understood that, as shown in Figure 3 、 Figures 6 to 8 , by setting the side plate part 2213 of the magnetic yoke 221 as the first side plate 2215 and the second side plate 2216 located on the opposite sides of the center magnetic part 222 along the second direction, the opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced to form the avoidance gap 2214, so as to provide the mounting space for the centering branch 213 by using the avoidance gap 2214.

[0071] In the embodiment, one end of the centering branch 213 is connected with the voice coil 212 in the magnetic gap 223 through the avoidance gap 2214, and the other end of the centering branch 213 is connected with the shell 1. It can be understood that, by setting the centering branch 213, the centering effect for the voice coil 212 is provided by using the centering branch 213, so as to avoid the problems such as polarization or swing of the voice coil 212 during vibration. At the same time, the connection conduction between the voice coil 212 and the external circuit can also be realized by using the centering branch 213.

[0072] Alternatively, the centering branch 213 comprises two. Two centering branches 213 are respectively arranged corresponding to two avoidance gaps 2214, one end of each centering branch 213 is connected with the voice coil 212 through the avoidance gap 2214, and the other end of each centering branch 213 is connected with the shell 1.

[0073] 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, that is, 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 avoidance gaps 2214 are located in the diameter direction of the hollow cylindrical side plate part 2213 and correspond to each other.

[0074] In the embodiment, the center magnetic part 222 is optionally cylindrical, and the accommodating groove 2211 of the magnetic yoke 221 is optionally a cylindrical cavity. It can be understood that the center magnetic part 222 and the side plate part 2213 of the magnetic yoke 221 enclose a circular annular magnetic gap 223, and at this time the voice coil 212 is optionally circular, so that the voice coil wire can most effectively cut the magnetic lines of force in the magnetic field, thereby improving the BL value of the product.

[0075] 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 part 222 and the cylindrical side plate part 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 part 222. It can be understood that, in a square voice coil structure used in combination with a square magnetic circuit, the magnet needs a larger 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.

[0076] Optionally, two centering branches 213 are symmetrically arranged on opposite sides of the side plate part 2213. In the embodiment, the two centering branches 213 are spaced apart along the third direction and symmetrically arranged, that is, the two centering branches 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.

[0077] In the embodiment, by arranging the vibration unit 3 in the shell 1, the vibrator assembly 31 of the vibration unit 3 is suspended on the outer periphery of the sound generating unit 2, and the stator assembly 32 is arranged on opposite sides of the sound generating unit 2, so that the stator assembly 32 drives the vibrator assembly 31 to vibrate along the second direction, and the first direction and the second direction are perpendicular, thereby realizing the vibration feedback function by using the vibration unit 3.

[0078] Optionally, the stator assembly 32 includes at least two drive coils 321, and the at least two drive coils 321 are respectively located on both sides of the sound generating unit 2 along the second direction. In this way, the drive coil 321 can be used to drive the vibrator assembly 31 to vibrate along the second direction. For example, the drive coil 321 can be two, and one drive coil 321 is arranged on each side of the sound generating unit 2 along the second direction; for another example, the drive coil 321 can be four, and two drive coils 321 are arranged on each side of the sound generating unit 2 along the second direction.

[0079] It can be understood that by arranging the sound generating unit 2 along the first direction and arranging the vibration unit 3 along the second direction, so that the first magnetic circuit system 22 of the sound generating unit 2 and the projection of the vibration unit 3 along the first direction are both located within the projection range of the diaphragm assembly 211 of the sound generating unit 2 along the first direction, thereby the sound generating area of the diaphragm assembly 211 can be maximized, and the sound generating effect of the sound generating unit 2 can be improved. Moreover, the above arrangement can also make the sound generating unit 2 and the vibration unit 3 located in two directions perpendicular to each other, not only reasonably utilize the space layout, simplify the assembly of the vibration sound generating device 100, occupy less internal space of the vibration sound generating device 100, but also make the sound generating unit 2 and the vibration unit 3 not need to be stacked, reduce the thickness of the product, meet the light and thin design requirements, and also can realize the independent functions and do not interfere with each other, can simultaneously ensure the vibration feedback function and the sound generating function of the vibration sound generating device 100.

[0080] In the present embodiment, as shown in Figures 1 to 3 , Figures 6 to 8 The vibration sound generating device 100 can be selected as 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 generating device 100, the second direction is the length direction of the vibration sound generating device 100, and the third direction is the width direction of the vibration sound generating device 100. Of course, the vibration sound generating 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 generating device 100, the second direction is the horizontal X direction of the vibration sound generating device 100, and the third direction is the horizontal Y direction of the vibration sound generating device 100, which is not limited here.

[0081] The vibration sound production device 100 of the present application integrates the sound production unit 2 and the vibration unit 3 by housing the sound production unit 2 and the vibration unit 3 in the shell 1, and setting the sound production unit 2 as the first vibration system 21 vibrating along the first direction and the first magnetic circuit system 22 oppositely arranged along the first direction with the first vibration system 21, so that the voice coil 212 of the first vibration system 21 is connected with the diaphragm assembly 211 and is arranged correspondingly with the magnetic gap 223 of the first magnetic circuit system 22, thus realizing sound production by driving the diaphragm assembly 211 with the voice coil 212, suspending the vibrator assembly 31 of the vibration unit 3 outside the sound production unit 2, and arranging at least two drive coils 321 of the stator assembly 32 on both sides of the sound production unit 2 along the second direction respectively, driving the vibrator assembly 31 to vibrate along the second direction with the stator assembly 32, and making the first direction 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 realizing the functions of sound playing and vibration feedback by integrating the sound production unit 2 and the vibration unit 3, maximizing the sound production area of the diaphragm assembly 211, improving the sound production effect of the sound production unit 2, setting the sound production unit 2 along the first direction and the vibration unit 3 along the second direction, so that the sound production unit 2 and the vibration unit 3 are located in two perpendicular directions, which not only reasonably utilizes the space layout, but also makes the sound production unit 2 and the vibration unit 3 not need to be stacked, and the functions are independent and do not interfere with each other, so as to ensure the sound production performance and vibration feedback performance of the vibration sound production device 100, simplify the assembly of the vibration sound production device 100, occupy less internal space of the vibration sound production device 100, and reduce the thickness of the vibration sound production device 100, thus meeting the light and thin design requirements of the product.Further, by setting the magnetic conducting yoke 221 of the first magnetic circuit system 22 as a bottom plate portion 2212 and a side plate portion 2213, the bottom plate portion 2212 and the side plate portion 2213 of the magnetic conducting yoke 221 are enclosed to form a containing groove 2211, so that the central magnetic portion 222 is installed and fixed by using the containing groove 2211, the central magnetic portion 222 is arranged on the bottom plate portion 2212 and is spaced from the side plate portion 2213 to form a magnetic gap 223, and the side plate portion 2213 is arranged as a first side plate 2215 and a second side plate 2216 arranged on opposite sides of the central magnetic portion 222 in the second direction, so that the opposite ends of the first side plate 2215 and the second side plate 2216 are respectively spaced to form an avoiding gap 2214, and the centering support sheet 213 is arranged so that one end of the centering support sheet 213 is connected with the voice coil 212 through the avoiding gap 2214 and the other end of the centering support sheet 213 is connected with the shell 1. The above arrangement makes the structural design of the first magnetic circuit system 22 more simple and reasonable, the magnetic gap 223 is formed between the side plate portion 2213 of the magnetic conducting yoke 221 and the central magnetic portion 222, and the avoiding gap 2214 formed by the side plate portion 2213 of the magnetic conducting yoke 221 can also provide an avoiding space for the centering support sheet 213, the installation of the centering support sheet 213 can center the voice coil 212, and the acoustic performance of the vibration sound generating device 100 is effectively improved.

[0082] In an embodiment, the vibrator assembly 31 includes a counterweight 311 and two second magnetic circuit systems 312, the counterweight 311 is provided with an avoiding space 3111, the first magnetic circuit system 22 is located in the avoiding space 3111, and the counterweight 311 is suspended on the outer periphery of the first magnetic circuit system 22, the two second magnetic circuit systems 312 are arranged on the counterweight 311 and are respectively located on the two sides of the first magnetic circuit system 22 in the second direction; wherein the drive coil 321 is two, and each second magnetic circuit system 312 is arranged opposite to one drive coil 321 in the first direction.

[0083] In the present embodiment, as shown in Figures 3 to 8 , Figure 10As shown, the stator assembly 32 of the vibration unit 3 optionally comprises two drive coils 321, which 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 setting the vibrator assembly 31 as the counterweight 311 and the two second magnetic circuit systems 312 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. Thus, each second magnetic circuit system 312 is arranged opposite to a drive coil 321 along the first direction, so that by passing current in the drive coil 321, the drive coil 321 generates relative motion of the drive coil 321 and the second magnetic circuit system 312 in the magnetic field of the second magnetic circuit system 312. Since the drive coil 321 is fixed on the shell 1, and the second magnetic circuit system 312 is suspended in the shell 1 through the counterweight 311, the second magnetic circuit system 312 drives the counterweight 311 to vibrate in the shell 1 along the second direction.

[0084] It can be understood that the setting of the counterweight 311 can not only make the vibrator assembly 31 have a certain weight, so as to generate 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 high-density material. In the embodiment, the vibrator assembly 31 is connected to the shell 1 through a connecting piece or an elastic piece or a suspension piece, so that the vibrator assembly 31 is suspended in the accommodating space 13 of the shell 1.

[0085] In order to ensure the weight of the counterweight 311 and prevent the counterweight 311 from interfering with the sound production unit 2 in the vibration process, in the embodiment, the counterweight 311 is provided with a avoiding space 3111, and the sound production unit 2 is located in the avoiding space 3111. Optionally, the avoiding space 3111 is located in the center of the counterweight 311. The avoiding space 3111 can be a through hole or a through hole structure, which is not limited here.

[0086] 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 production 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 production unit 2 when vibrating along the second direction.

[0087] In the embodiment, the 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 drive 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).

[0088] In an embodiment, the vibrator assembly 31 further comprises two elastic members 313, which are respectively arranged at two sides of the weight block 311 along the second direction, and one end of each elastic member 313 is connected with the weight block 311, and the other end of each elastic member 313 is connected with the shell 1, so that the weight block 311 is suspended outside the first magnetic circuit system 22.

[0089] In the embodiment, as shown in Figures 3 to 8 , Figure 10 the weight block 311 of the vibrator assembly 31 and the second magnetic circuit system 312 are connected with 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 comprise two elastic members 313, which are respectively arranged at two sides of the weight block 311 along the second direction. It can be understood that one end of each elastic member 313 is connected with the weight block 311, and the other end of each elastic member 313 is connected with the shell 1, so that the weight block 311 is suspended outside the first magnetic circuit system 22.

[0090] It should be noted that the elastic members 313 have deformation ability, that is, the elastic members 313 can be deformed and reset when the weight block 311 of the vibrator assembly 31 and the second magnetic circuit system 312 vibrate along the second direction. It can be understood that the elastic members 313 can be elastic sheets, springs or elastic members, which are not limited herein.

[0091] 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 that the reciprocating motion of the vibrator assembly 31 can be achieved. Optionally, one elastic member 313 is arranged at each end of the weight block 311 along the second direction, so that one end of the elastic member 313 is fixed on the weight block 311, and the other end of the elastic member 313 is fixed on the shell 1.

[0092] Optionally, the two elastic members 313 are arranged in a central symmetry with the central axis of the avoiding space 3111. Such arrangement can ensure the balance of the vibration of the vibrator assembly 31 along the second direction.

[0093] In the embodiment, the two driving coils 321 are arranged in a symmetry with the center of the first magnetic circuit system 22, and the two second magnetic circuit systems 312 are arranged in a symmetry with the central axis of the avoiding space 3111. Such arrangement can ensure the balance of the vibration of the weight block 311 and the second magnetic circuit system 312 along the second direction.

[0094] In an embodiment, each elastic member 313 comprises a deformation part 3131, and a first fixed end 3132 and a second fixed end 3133 connected to two ends of the deformation part 3131, the first fixed end 3132 is connected with the weight block 311, and the second fixed end 3133 is connected with the shell 1.

[0095] In the embodiment, as shown in Figures 3 to 8 , Figure 10 , the elastic member 313 can be in the form of a spring plate. The elastic member 313 is provided with a deformed portion 3131 and first and second fixed ends 3132 and 3133 connected to both ends of the deformed portion 3131. The first fixed end 3132 is connected to the weight 311, and the second fixed end 3133 is connected to the housing 1.

[0096] Optionally, the deformed portion 3131 of the elastic member 313 has at least one bending portion. In the embodiment, the second fixed end 3133 of the elastic member 313 is arranged at an angle with the deformed portion 3131.

[0097] 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 housing 1. Optionally, the first buffer structure 314 is buffer foam. It can be understood that the first buffer structure 314 can buffer the vibration of the vibrator assembly 31.

[0098] 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.

[0099] In an embodiment, as shown in Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 10 , a second buffer structure 315 is arranged between the vibrator assembly 31 and the first magnetic circuit system 22. Optionally, the second buffer structure 315 is buffer foam. It can be understood that the second buffer structure 315 can buffer the vibration of the vibrator assembly 31, avoiding the impact of the vibrator assembly 31 on the first magnetic circuit system 22.

[0100] Optionally, the second buffer structure 315 is arranged in the avoiding space 3111 of the vibrator assembly 31 and on both sides in the second direction. In the embodiment, the second buffer structure 315 is arranged on the inner wall of the avoiding space 3111 of the weight 311 in the second direction.

[0101] In an embodiment, each second magnetic circuit system 312 comprises a first magnet 3121 and a second magnet 3122 arranged adjacent to each other along a second direction, and each drive coil 321 comprises two long sides 322 spaced apart 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 apart 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.

[0102] In the present embodiment, as shown in Figure 4 , the second magnetic circuit system 312 is arranged as the first magnet 3121 and the second magnet 3122, such that the first magnet 3121 and the second magnet 3122 are arranged adjacent to each other 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 respectively, and thus the current is passed through the drive coil 321, so as to form a magnetic field cooperating with the first magnet 3121 and the second magnet 3122 of the second magnetic circuit system 312 to realize vibration.

[0103] Optionally, the first magnet 3121 and the second magnet 3122 are magnetized along the first direction and the magnetization directions are opposite. 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.

[0104] 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 present embodiment, the drive coil 321 is a planar coil or a flat coil.

[0105] In an embodiment, each second magnetic circuit system 312 further comprises a first magnetic conducting plate 3123, and 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.

[0106] In the present embodiment, as shown in Figure 4 , by arranging the first magnetic conducting plate 3123 and arranging the first magnetic conducting plate 3123 on the side of the first magnet 3121 and the second magnet 3122 away from the drive coil 321, the magnetic circuit formed by the first magnet 3121 and the second magnet 3122 is magnetized by the first magnetic conducting plate 3123, so as to further make the magnetic induction lines of the magnetic circuit pass through the two long sides 322 of the drive coil 321 more, and improve the magnetic field driving force acting on the vibrator assembly 31 and the vibration feedback effect of the vibration unit 3.

[0107] 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.

[0108] In the present embodiment, as shown in Figure 4 and Figure 10 , the mounting groove 3112 is arranged on the counterweight 311, and the second magnetic circuit system 312 is mounted and fixed by the mounting groove 3112. In this way, the assembly structure between the counterweight 311 and the second magnetic circuit system 312 is more compact, the assembly space is saved, and the mounting stability of the second magnetic circuit system 312 is improved, and the mounting position of the second magnetic circuit system 312 is limited. It can be understood that the mounting groove 3112 is recessed from the side of the counterweight 311 facing the driving coil 321.

[0109] 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 conducting plate 3123 can be adhesively connected. The first magnetic conducting plate 3123 and the counterweight 311 can be an integral structure; or the first magnetic conducting plate 3123 and the counterweight 311 are connected by adhesion or welding, which is not limited here.

[0110] In an embodiment, the center magnetic part 222 includes a first center magnet 2221, a center magnetic conducting plate 2222 and a second center magnet 2223 which are sequentially stacked along a first direction, the first center magnet 2221 is connected with the bottom plate part 2212; wherein the first center magnet 2221 and the second center magnet 2223 are magnetized along the first direction and the magnetization directions are opposite.

[0111] In the present embodiment, as shown in Figure 4 and Figure 5 , the center magnetic part 222 is arranged as a pair magnetic structure, thereby effectively improving the magnetic field strength of the center magnetic part 222. The first center magnet 2221, the center magnetic conducting plate 2222 and the second center magnet 2223 of the center magnetic part 222 are sequentially stacked in the accommodating groove 2211 of the magnetic conducting yoke 221 along the first direction.

[0112] It can be understood that the first center magnet 2221 is connected with the bottom plate part 2212 of the magnetic conducting yoke 221, and the peripheries of the first center magnet 2221, the center magnetic conducting plate 2222 and the second center magnet 2223 are spaced from the side plate part 2213 of the magnetic conducting yoke 221 to form a magnetic gap 223.

[0113] Alternatively, the first center magnet 2221 and the second center magnet 2223 are magnetized along the first direction and the magnetization directions are opposite. It can be understood that the pair magnetic structure formed by the center magnetic part 222 and the magnetic flux loop formed by the magnetic conducting yoke 221 can effectively improve the magnetic field strength and improve the driving force on the voice coil 212.

[0114] In an embodiment, each centering vane 213 comprises a first connecting portion 2131, a second connecting portion 2132, and an elastic arm portion 2133 connecting the first connecting portion 2131 and the second connecting portion 2132, the shell 1 is provided with a boss 111 between the first magnetic circuit system 22 and the vibrator assembly 31, the first connecting portion 2131 is connected with the boss 111, and the second connecting portion 2132 is connected with the voice coil 212 in the magnetic gap 223 through the avoiding gap 2214.

[0115] In the present embodiment, as shown in Figure 3 , Figure 6 , Figure 8 the elastic arm portion 2133 of the centering vane 213 connects the first connecting portion 2131 and the second connecting portion 2132, the first connecting portion 2131 of the centering vane 213 is connected with the shell 1, and the second connecting portion 2132 is connected with the voice coil 212 in the magnetic gap 223 through the avoiding gap 2214. It can be understood that the first connecting portion 2131 of the centering vane 213 comprises one, and the elastic arm portion 2133 and the second connecting portion 2132 comprise at least one. Alternatively, the number of the elastic arm portion 2133 is the same as the number of the second connecting portion 2132. In order to improve the deformation ability of the elastic arm portion 2133, the elastic arm portion 2133 comprises at least one bending portion.

[0116] In order to realize the connection and conduction of the voice coil 212 with the external circuit, in an embodiment, the shell 1 is provided with a first conductive piece 112, and the first vibration system 21 further comprises the centering vane 213, one end of the centering vane 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 vane 213 is connected with the shell 1 and electrically connected with the first conductive piece 112.

[0117] It can be understood that, as shown in Figure 8 the centering vane 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 and conducted with the first conductive piece 112, 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 and conducted with the first conductive piece 112 through the centering vane 213, and the external circuit is connected and conducted with the first conductive piece 112, so as to realize the connection and conduction of the voice coil 212 with the external circuit. Alternatively, the first conductive piece 112 is embedded in the shell 1.

[0118] In an embodiment, the shell 1 forms a receiving space 13 with an opening 14, the first magnetic circuit system 22 and the vibration unit 3 are both arranged in the receiving space 13, and the outer periphery of the diaphragm assembly 211 is connected to 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 receiving space 13, and the through hole 114 penetrates the central magnetic part 222, the bottom plate part 2212 and the shell 1 in sequence.

[0119] In the present embodiment, as shown in Figures 4 to 8 the shell 1 has a receiving space 13, that is, the shell 1 has a structure of a cylinder with one end open and one end closed. By connecting the outer periphery of the diaphragm assembly 211 of the sound production unit 2 to the shell 1 to cover the opening 14, the diaphragm assembly 211 cooperates with the shell 1 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 production device 100 is further provided with a through hole 114 communicating with the receiving space 13, so that air leakage can be achieved through the through hole 114 to achieve air pressure balance on both sides of the diaphragm assembly 211.

[0120] It can be understood that the first magnetic circuit system 22 and the vibration unit 3 of the sound production unit 2 are both arranged in the receiving space 13, so 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. In this way, the diaphragm assembly 211 can have a relatively large vibration area, and the first magnetic circuit system 22 and the vibration unit 3 of the sound production unit 2 can not be stacked, effectively reducing the size of the vibration sound production device 100 in the thickness direction (i.e., the first direction).

[0121] Optionally, the through hole 114 penetrates the first magnetic circuit system 22 and the shell 1 in sequence, that is, the through hole 114 penetrates the central magnetic part 222, the bottom plate part 2212 and the shell 1 in sequence.

[0122] In an embodiment, the shell 1 includes a bottom part 11 and a side part 12 arranged at the periphery of the bottom part 11, the bottom part 11 and the side part 12 form a receiving space 13 with an opening 14, the first magnetic circuit system 22 is arranged in the bottom part 11 and located in the receiving space 13, the outer periphery of the diaphragm assembly 211 is connected to one end of the side part 12 away from the bottom part 11 and covers the opening 14, the driving coil 321 is two, and the two driving coils 321 are arranged in the bottom part 11 and located on both sides of the first magnetic circuit system 22 along the second direction, and the vibrator assembly 31 is suspendedly connected to the side part 12 and arranged around the outer periphery of the first magnetic circuit system 22; wherein the bottom part 11 is provided with a boss 111 located between the first magnetic circuit system 22 and the vibrator assembly 31, and the centering sheet 213 is connected to the boss 111.

[0123] In the present embodiment, as shown in Figures 3 to 8As 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.

[0124] 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. In this embodiment, the oscillator assembly 31 is connected to the side 12 of the housing 1 through an elastic member 313, so that the counterweight 311 and the second magnetic circuit system 312 are suspended in the accommodating space 13.

[0125] In this embodiment, as Figure 3 , Figures 5 to 8 As shown, the bottom 11 of the housing 1 is provided with a boss 111 located between the first magnetic circuit system 22 and the oscillator assembly 31, and the centering support plate 213 is connected to the boss 111. It can be understood that the first connecting part 2131 of the centering support plate 213 is connected to the boss 111.

[0126] In one embodiment, the housing 1 further includes a first conductive member 112 embedded in the boss 111, one end of the centering support 213 is connected to the voice coil 212 and electrically connected to the lead wire of the voice coil 212, and the other end of the centering support 213 is connected to the boss 111 and electrically connected to the first conductive member 112.

[0127] Optionally, the first conductive element 112 is embedded in the bottom 11 of the housing 1. In this embodiment, the first conductive element 112 is embedded in the boss 111 and is partially exposed on the end face where the boss 111 is connected to the first connecting portion 2131.

[0128] 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. For example... 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.

[0129] Optionally, the first bottom plate 115 is a metal piece, and the second bottom plate 116 is a plastic piece. In the embodiment, the driving coil 321 of the stator assembly 32 is arranged on the first bottom plate 115. By arranging the first bottom plate 115 as a metal piece, the first bottom plate 115 can be used to guide and concentrate the magnetic field formed by the second magnetic circuit system 312. Of course, in other embodiments, the first bottom plate 115 can also be a magnetic conductive plate, which is not limited herein.

[0130] It can be understood that the first bottom plate 115 and the second bottom plate 116 of the bottom portion 11 can be integrally injection molded. In the embodiment, the first bottom plate 115 of the bottom portion 11 can be welded, bonded, or integrally formed with the side portion 12, which is not limited herein. Optionally, the first bottom plate 115 and the side portion 12 are integrally formed.

[0131] In order to realize the connection and conduction of the driving coil 321 and the external circuit, in an embodiment, the shell 1 further comprises a second conductive piece 113 embedded in the bottom portion 11, and the lead wire of the driving coil 321 is electrically connected with the second conductive piece 113.

[0132] It can be understood that the second conductive piece 113 is arranged on the bottom portion 11 of the shell 1, and the second conductive piece 113 is electrically connected with the lead wire of the driving coil 321. In this way, the external circuit can be connected and conducted with the driving coil 321 through the second conductive piece 113. Optionally, the second conductive piece 113 is embedded in the bottom portion 11. In the embodiment, the second conductive piece 113 is embedded in the second bottom plate 116 of the bottom portion 11, and the first conductive piece 112 is embedded in the second bottom plate 116 of the bottom portion 11. The first conductive piece 112 and the second conductive piece 113 are arranged in a spaced manner on the second bottom plate 116 of the bottom portion 11.

[0133] Optionally, the bottom portion 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.

[0134] In an embodiment, the side wall of the shell 1 extends towards the accommodating space 13 to form a limiting portion 121. The limiting portion 121 is located on the side of the diaphragm assembly 211 facing the diaphragm assembly 211, and at least part of the limiting portion 121 is opposite to the diaphragm assembly 211 along the first direction.

[0135] In the embodiment, as shown in Figure 3 , Figures 5 to 8As shown, the side portion 12 of the shell 1 is provided with a limiting portion 121 extending towards 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 vibrator assembly 31 along the first direction. It can be understood that, by providing the limiting portion 121, the vibrator assembly 31 is limited in the first direction by the limiting portion 121, avoiding interference or influence on the diaphragm assembly 211 during vibration of the vibrator assembly 31.

[0136] In the embodiment, as shown in Figures 5 to 8 , the side portion 12 of the shell 1 has two long axis edges 124 extending along the second direction, and each long axis edge 124 is provided with a limiting portion 121 extending along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0137] In an implementation, the vibrator assembly 31 is provided with a limiting groove 3113 corresponding to the limiting portion 121, and the limiting portion 121 is arranged in the limiting groove 3113.

[0138] In the embodiment, as shown in Figure 3 , Figures 5 to 8 , Figure 10 the mass 311 is provided with a limiting groove 3113 corresponding to each limiting portion 121, and optionally, the extension length of the limiting groove 3113 along the second direction is greater than the extension length of the limiting portion 121 along the second direction. It can be understood that, in this way, the vibrator assembly 31 can be limited in the first direction by the limiting portion 121, and the second direction can be limited by the cooperation of the limiting portion 121 and the limiting groove 3113, avoiding 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 output effect of the sound generating unit 2.

[0139] Optionally, the ratio of the extension length of the limiting portion 121 along the second direction to the extension length of the mass 311 along the second direction is greater than 0.5 and less than or equal to 1. In this way, the limiting portion 121 can limit the mass 311 in the first direction. For example, the ratio of the extension length of the limiting portion 121 along the second direction to the extension length of the mass 311 along the second direction can be 0.6, 0.7, 0.8, etc., which is not limited herein.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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 that the side of the second vertical wall 123 towards the accommodating space 13 limits the vibrator assembly 31 in the first direction.

[0146] 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 with the shell 1; the first vibration system 21 further comprises a skeleton 214, one end of the skeleton 214 is connected with the dome 2112, and the other end of the skeleton 214 is connected with the voice coil 212 along the first direction.

[0147] 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 proper position in the magnetic gap 223.

[0148] 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 herein.

[0149] 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 with 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 with the dome 2112, and the side wall 2142 extends along the first direction and is connected with the voice coil 212.

[0150] It can be understood that by connecting the top wall 2141 of the skeleton 214 with 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 between 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 with the voice coil 212 to improve the connection stability. In order to further increase the connection area between 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 with the end portion of the voice coil 212. At the same time, the cavity 2143 formed by the top wall 2141 and the side wall 2142 is used to avoid and accommodate the first magnetic circuit system 22.

[0151] 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 further 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.

[0152] 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 vibration unit 3 with a hollow center.

[0153] 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. The height avoidance is achieved by the hollow annular space in the middle of 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.

[0154] In the present 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 vibration space below 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.

[0155] 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.

[0156] 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.

[0157] 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 sound production device, characterized by comprising: The vibration sound production device comprises: a housing; a sound production unit arranged in the housing, the sound production unit comprising a first vibration system vibrating in a first direction and a first magnetic circuit system arranged opposite to the first vibration system in the first direction, the first magnetic circuit system comprising a magnetic yoke and a central magnetic part, the magnetic yoke comprising a bottom plate part and a side plate part extending in the first direction towards the first vibration system, the central magnetic part being arranged on the bottom plate part and spaced from the side plate part to form a magnetic gap, the side plate part comprising a first side plate and a second side plate on opposite sides of the central magnetic part in a second direction, opposite ends of the first side plate and the second side plate being spaced to form an avoiding gap, the first vibration system comprising a diaphragm assembly, a voice coil and two centering bridges, the voice coil being connected to the diaphragm assembly and arranged corresponding to the magnetic gap, the two centering bridges being arranged corresponding to the two avoiding gaps respectively, one end of each centering bridge penetrating the avoiding gap and being connected to the voice coil, and the other end of each centering bridge being connected to the housing; and a vibration unit arranged in the housing, the vibration unit comprising a vibrator assembly suspended on an outer periphery of the sound production unit and a stator assembly on opposite sides of the sound production unit, the stator assembly comprising at least two drive coils arranged on the housing, the at least two drive coils being arranged on opposite sides of the sound production unit in a second direction, the stator assembly driving the vibrator assembly to vibrate in the second direction, the first direction being perpendicular to the second direction. The projection of the first magnetic circuit system and the vibration unit in the first direction is within the projection range of the diaphragm assembly in the first direction.

2. The vibration sound production device of claim 1, wherein The housing forms a containing space with an opening, the first magnetic circuit system and the vibration unit are arranged in the containing space, and the outer periphery of the diaphragm assembly is connected to the housing to cover the opening. The vibration sound production device further comprises a through hole communicating with the containing space, the through hole penetrating the central magnetic part, the bottom plate part and the housing in sequence.

3. The vibration sound production device of claim 1, wherein The central magnetic part comprises a first central magnet, a central magnetic plate and a second central magnet arranged in sequence in the first direction, and the first central magnet is connected to the bottom plate part. The first central magnet and the second central magnet are magnetized in the first direction and the magnetization directions are opposite.

4. The vibration sound production device of claim 1, wherein The central magnetic part is in a cylindrical shape, and the first side plate and the second side plate are in a semicircular arc shape and are symmetrically arranged.

5. The vibration sound production device of claim 1, wherein The shell comprises a bottom and a side portion arranged at the periphery of the bottom, the bottom and the side portion enclose a containing space with an opening, the first magnetic circuit system is arranged on the bottom and located in the containing space, the outer periphery of the diaphragm assembly is connected to one end of the side portion away from the bottom and covers the opening, the driving coil is two, the two driving coils are arranged on the bottom and located on both sides of the first magnetic circuit system along the second direction, and the vibrator assembly is suspended and connected to the side portion and surrounds the outer periphery of the first magnetic circuit system. The bottom is provided with a boss between the first magnetic circuit system and the vibrator assembly, and the centering sheet is connected with the boss.

6. The vibration sound production device of claim 5, wherein The shell further comprises a first conductive member embedded in the boss, one end of the centering sheet is connected with the voice coil and electrically connected with the lead wire of the voice coil, and the other end of the centering sheet is connected with the boss and electrically connected with the first conductive member. And / or, the shell further comprises a second conductive member embedded in the bottom, and the lead wire of the driving coil is electrically connected with the second conductive member. The bottom and the magnetic yoke are integrally injection molded.

7. The vibration sound production device of claim 1, wherein The two centering sheets are arranged in the third direction and symmetrically arranged along the second direction, and the first direction, the second direction and the third direction are arranged perpendicular to each other. And / or, each centering sheet 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 shell is provided with a boss between the first magnetic circuit system and the vibrator assembly, the first connecting portion is connected with the boss, and the second connecting portion is connected with the voice coil in the magnetic gap through the avoiding gap.

8. The vibration sound production device of claim 1, wherein The vibrator assembly comprises: a counterweight, the counterweight is provided with an avoiding space, the first magnetic circuit system is located in the avoiding space, and the counterweight is suspended outside the first magnetic circuit system; and two second magnetic circuit systems, the two second magnetic circuit systems are arranged on the counterweight and located on both sides of the first magnetic circuit system along the second direction; The driving coil is two, each second magnetic circuit system is arranged opposite to one driving coil along the first direction.

9. The vibration sound production device of claim 8, wherein 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 apart and opposite along the second direction, the two long sides extend along the third direction, and the two long sides are arranged opposite and spaced apart from the first magnet and the second magnet respectively. The first direction, the second direction and the third direction are arranged perpendicular to each other.

10. The vibration sound production device of claim 9, wherein, 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 plate, and the first magnetic plate is arranged on the counterweight and located on the side away from the driving coil of the first magnet and the second magnet. And / or, the first magnet and the second magnet are magnetized along the first direction and the magnetization directions are opposite.

11. The vibration sound production device of claim 8, wherein The vibrator assembly further comprises two elastic members, the two elastic members are respectively arranged on two sides of the counterweight along the second direction, one end of each elastic member is connected with the counterweight, and the other end of each elastic member is connected with the shell, so that the counterweight is suspended outside the first magnetic circuit system. The two elastic members are centrally symmetrically arranged with respect to the center axis of the avoiding space; and / or each elastic member comprises a deformation part and first and second fixed ends connected to two ends of the deformation part, the first fixed end is connected with the counterweight, and the second fixed end is connected with the shell.

12. The vibration sound production device of claim 1, wherein A first buffer structure is arranged between the vibrator assembly and the shell, 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.

13. The vibration sound production device of claim 1, wherein The diaphragm assembly comprises a diaphragm and a ball top arranged in the center of the diaphragm, and the outer periphery of the diaphragm is connected with the shell. The first vibration system further comprises a skeleton, one end of the skeleton is connected with the ball top, and the other end of the skeleton is connected with the voice coil along the first direction.

14. The vibration sound production device of claim 13, wherein, The skeleton comprises 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 with the ball top, and the side wall extends along the first direction and is connected with the voice coil. The side wall is provided with a through hole communicating with the cavity; and / or the top wall extends along the surface of the ball top to form an extension wall; and / or the end of the side wall away from the top wall is bent to form a bending part, and the bending part is connected with the end of the voice coil.

15. An electronic device, comprising: The electronic device comprises the vibration sound production device according to any one of claims 1 to 14.

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