Sound-generating vibration device and electronic equipment

Abstract

The present invention relates to a sound-generating vibration device and an electronic device. The sound-generating vibration device of the present invention comprises a shell, a sound-generating unit and a vibration motor, the shell comprises a first shell and a second shell that match each other, the first shell comprises a bracket, and the bracket and the second shell are welded; the sound-generating unit is connected to the first shell, and the sound-generating unit comprises a diaphragm and a voice coil for driving the diaphragm to vibrate and generate sound; the vibration motor comprises a coil and a magnetic circuit assembly, at least one coil is respectively arranged on two inner side walls of the second shell that are arranged opposite to each other, the magnetic circuit assembly comprises a central magnet and at least one side magnet arranged on the side of the central magnet, and the side magnet is arranged at intervals from the central magnet; wherein at least part of the voice coil is inserted between the side magnet and the central magnet, and reciprocates along its own axial direction, the magnetic circuit assembly is arranged between the two inner side walls of the shell, and is arranged at intervals from the coil, and at least part of the magnetic circuit assembly reciprocates under the joint action of the coils on the two inner side walls.

Description

Technical Field

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

[0002] Mobile communication terminals such as mobile phones usually have sound-generating and vibration components, such as speaker modules and motors. When a communication terminal receives a communication request, such as a phone call or text message, there are two ways to prompt the incoming call: sound prompt and vibration prompt. In traditional design schemes, the performance improvement of speaker modules and motors is generally achieved by increasing the size of the product. However, as the internal space of electronic devices becomes more and more compact, the space occupied by batteries, motherboards, and cameras is increasing. This requires that the size of speaker modules and vibration motors cannot be increased or even reduced, which conflicts with the demand for performance improvement. Summary of the invention

[0003] The purpose of the present invention is to at least solve the problem that the speaker module and the motor occupy a large space in the electronic device. This purpose is achieved by:

[0004] A first aspect of the present invention discloses a sound-generating vibration device, the sound-generating vibration device comprising:

[0005] A housing, the housing comprising a first housing and a second housing that match each other, the first housing comprising a bracket, and the bracket and the second housing are welded;

[0006] A sound-generating unit, the sound-generating unit being connected to the first housing, the sound-generating unit comprising a diaphragm and a voice coil for driving the diaphragm to vibrate and generate sound;

[0007] A vibration motor, the vibration motor comprising a coil and a magnetic circuit assembly, at least one of the coils is respectively disposed on two inner side walls of the second shell that are opposite to each other, the magnetic circuit assembly comprises a central magnet and at least one side magnet disposed on the side of the central magnet, and the side magnet is spaced apart from the central magnet;

[0008] Among them, at least part of the voice coil is inserted between the side magnet and the center magnet, and reciprocates along its own axial direction, the magnetic circuit component is arranged between the two inner walls of the shell, and is spaced apart from the coil, at least part of the magnetic circuit component reciprocates under the joint action of the coils on the two inner walls, and the reciprocating direction of at least part of the magnetic circuit component is parallel to the vibration direction of the voice coil.

[0009] According to the sound-generating vibration device of the present application, the magnetic circuit assembly is placed between the two inner walls of the shell, and reciprocates under the joint action of the coils on the two inner walls, so that the magnetic circuit assembly is formed into a vibrator of the vibration motor to give the user a vibration prompt. At the same time, part of the voice coil of the sound-generating unit is inserted between the side magnet and the center magnet of the magnetic circuit assembly, and reciprocates along its own axial direction to drive the diaphragm to vibrate and produce sound, so that the same magnetic circuit assembly can meet the needs of the sound-generating unit and the vibration motor at the same time, effectively reducing the number of magnetic circuit assemblies set in the sound-generating vibration device, reducing the overall volume of the sound-generating vibration device, and reducing the space occupancy rate of the sound-generating vibration device in the electronic device.

[0010] At the same time, the first shell and the second shell are connected by welding, which can reduce the setting of the plug-in matching structure, facilitate the assembly and fixation of the first shell and the second shell, and improve the connection reliability of the first shell and the second shell.

[0011] At the same time, when the voice coil vibrates, it will cause the vibration of the shell. Since the reciprocating motion direction of at least part of the magnetic circuit assembly in the present application is parallel to the vibration direction of the voice coil, when the coil is energized, the magnetic circuit assembly can actively vibrate under the action of the coil, and when the vibration frequency of the magnetic circuit assembly is the same or approximately the same as the vibration frequency of the coil, and the vibration direction of the magnetic circuit assembly is opposite to the vibration direction of the coil, it can offset the vibration of the shell driven by the vibration of the voice coil, thereby keeping the shell in a stable state. Even when the coil is not energized, when the voice coil vibrates, the magnetic circuit assembly will vibrate with the voice coil under the action of the voice coil, thereby offsetting part of the vibration of the shell, keeping the shell in a stable state, and improving the user experience.

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

[0013] In some embodiments of the present invention, the first shell further includes a first injection-molded part and a second injection-molded part disposed at both ends of the first shell in a length direction, and the bracket is used to connect the first injection-molded part and the second injection-molded part.

[0014] In some embodiments of the present invention, the second shell includes a first side wall and a second side wall that are oppositely arranged, the first side wall and the second side wall are respectively arranged along the length direction of the second shell, and the first side wall and the second side wall are respectively welded to the bracket.

[0015] In some embodiments of the present invention, the bracket includes a first connecting portion and a second connecting portion that are relatively arranged, and the first connecting portion and the second connecting portion are respectively arranged along the length direction of the shell. The bracket also includes a first fixing portion and a second fixing portion that are relatively arranged, and the first fixing portion and the second fixing portion are respectively arranged along the width direction of the shell. The first connecting portion, the first fixing portion, the second connecting portion and the second fixing portion are connected in an end-to-end order.

[0016] In some embodiments of the present invention, the first connecting portion and the second connecting portion are arranged above the first fixing portion and the second fixing portion along the height direction of the shell, and the first connecting portion and the second connecting portion are respectively welded to the second shell.

[0017] In some embodiments of the present invention, the first fixing portion is connected to the first injection molding portion, the first fixing portion is provided with a first limiting protrusion facing the second fixing portion, and the second fixing portion is connected to the second injection molding portion, the second fixing portion is provided with a second limiting protrusion facing the first fixing portion.

[0018] In some embodiments of the present invention, at least one mounting protrusion protruding toward the interior of the shell is respectively provided on the two inner side walls of the second shell, and the coil is sleeved on the outside of the mounting protrusion.

[0019] In some embodiments of the present invention, the shell further includes a cover plate, which is disposed on a surface of the diaphragm facing away from the voice coil and is connected to the first shell and / or the diaphragm.

[0020] In some embodiments of the present invention, the magnetic circuit assembly further includes a yoke, the center magnet and the side magnets are jointly arranged on a surface of the yoke facing the voice coil, and the yoke is connected to both ends of the second shell in the length direction through an elastic member.

[0021] Another aspect of the present invention discloses an electronic device, which comprises any one of the above-mentioned sound-generating vibration devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0023] Figure 1 This is a schematic diagram of the structure of the sound-generating vibration device of some embodiments of the present application;

[0024] Figure 2 A schematic structural diagram of a sound-generating vibration device according to some embodiments of the present application from another angle;

[0025] Figure 3 AA cross-sectional structural diagram of the sound-generating vibration device of some embodiments of the present application;

[0026] Figure 4 BB cross-sectional structural diagram of the sound-generating vibration device of some embodiments of the present application;

[0027] Figure 5 This is a schematic diagram of the exploded structure of the sound-generating vibration device of some embodiments of the present application;

[0028] Figure 6 This is a schematic diagram of the structure of the sound-generating vibration device of some embodiments of the present application after the second shell is removed;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the magnetic circuit assembly and the first housing in some embodiments of the present application;

[0030] Figure 8 This is a schematic diagram of the assembly structure of the magnetic circuit assembly and the second housing in some embodiments of the present application;

[0031] Fig. 9 This is a schematic diagram of the internal structure of the second housing in some embodiments of the present application;

[0032] Fig.10 This is a schematic diagram of the internal structure of the second housing in some embodiments of the present application;

[0033] Fig.11 This is a schematic diagram of the connection structure between the coil and the conductive plate in some embodiments of the present application;

[0034] Fig.12 This is a schematic diagram of the structure of the elastic member of some embodiments of the present application;

[0035] Fig.13 This is a schematic diagram of the connection structure between the sound unit and the first housing in some embodiments of the present application;

[0036] Fig.14 It is a schematic diagram of the enlarged structure of the C part of the sound-generating vibration device in some embodiments of the present application;

[0037] Fig.15 This is a schematic diagram of the structure of the sound unit of some embodiments of the present application;

[0038] Fig.16 Schematic diagram of the D-part amplification structure of the sound unit in some embodiments of the present application;

[0039] Fig.17This is a schematic diagram of the relative position structure of the sound unit and the first housing in some embodiments of the present application;

[0040] Fig.18 This is a schematic diagram of the structure of the sound unit of some embodiments of the present application;

[0041] Fig.19 This is a schematic diagram of the disassembled structure of the first shell of some embodiments of the present application;

[0042] Fig. 20 This is a schematic diagram of the structure of the metal insert according to some embodiments of the present application;

[0043] Fig.21 This is a schematic diagram of the structure of the bracket of some embodiments of the present application.

[0044] The symbols in the accompanying drawings are as follows:

[0045] 1: Sound-generating vibration device;

[0046] 10: housing, 11: first housing, 111: first injection molding part, 1111: plug-in end, 112: second injection molding part, 113: bracket, 1131: first connecting part, 1132: second connecting part, 1133: first fixing part, 1134: second fixing part, 1135: first limiting protrusion, 1136: second limiting protrusion, 114: metal insert, 1141: first straight plate part, 1142: second straight plate part, 1143: third straight plate part, 12: second housing, 121: first side wall, 1211: mounting protrusion, 122: second side wall, 123: bottom wall, 1231: first protrusion part, 1232: second protrusion part, 1233: leakage hole, 13: cover plate;

[0047] 20: sound unit, 21: diaphragm, 211: diaphragm body, 212: conductive wire, 22: voice coil, 221: second lead wire, 23: centering support plate, 24: ball top;

[0048] 30: vibration motor, 31: coil, 311: first lead, 32: magnetic circuit assembly, 321: center magnet, 322: side magnet, 3221: first magnetic part, 3222: second magnetic part, 323: first magnetic conductive plate, 324: second magnetic conductive plate, 325: yoke, 3251: threading hole;

[0049] 40: circuit board, 41: first conductive sheet, 42: second conductive sheet;

[0050] 51: first damping block, 52: second damping block;

[0051] 60: dust screen;

[0052] 70: elastic member, 71: external connection portion, 72: elastic portion, 73: internal connection portion. DETAILED DESCRIPTION

[0053] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0054] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0055] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0056] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0057] Current electronic devices are usually equipped with sound prompts and vibration prompts. Sound prompts generally use speakers, and vibration prompts generally use vibration motors. However, the internal space of electronic devices is limited. In order to reduce the space occupied by speakers and vibration motors in the housing of electronic devices, the present application provides an electronic device, which has a sound-generating vibration device. Through the sound-generating vibration device and the electronic device, the space occupied by speakers and vibration motors in the electronic device can be effectively reduced.

[0058] Combination Figures 1 to 5 As shown, in some embodiments of the present application, the sound-generating vibration device 1 includes a housing 10, a sound-generating unit 20 and a vibration motor 30, the sound-generating unit 20 includes a diaphragm 21 and a voice coil 22 for driving the diaphragm 21 to vibrate and generate sound, the vibration motor 30 includes a coil 31 and a magnetic circuit assembly 32, at least one coil 31 is respectively provided on two inner side walls of the housing 10 that are arranged opposite to each other, the magnetic circuit assembly 32 includes a central magnet 321 and at least one side magnet 322 arranged on the side of the central magnet 321, and the side magnet 322 is arranged at intervals from the central magnet 321. Among them, the magnetic circuit assembly 32 is arranged between the two inner side walls of the housing and is arranged at intervals from the coil 31, at least part of the magnetic circuit assembly 32 reciprocates under the joint action of the coils 31 on the two inner side walls, and the reciprocating direction of at least part of the magnetic circuit assembly 32 is parallel to the vibration direction of the voice coil 22, at least part of the voice coil 22 is inserted between the central magnet 321 and the side magnet 322 of the magnetic circuit assembly 32, and reciprocates along its own axial direction.

[0059] According to the sound-generating vibration device 1 of the present application, the magnetic circuit component 32 is placed between the two inner walls of the shell 10, and reciprocates under the joint action of the coils 31 of the two inner walls, so that the magnetic circuit component 32 is formed into a vibrator of the vibration motor 30 to give the user a vibration prompt. At the same time, part of the voice coil 22 of the sound-generating unit 20 is inserted between the central magnet 321 and the side magnet 322 of the magnetic circuit component 32, and reciprocates along its own axial direction to drive the diaphragm 21 to vibrate and make sound, so that the same magnetic circuit component 32 can meet the needs of the sound-generating unit 20 and the vibration motor 30 at the same time, effectively reducing the number of magnetic circuit components 32 set in the sound-generating vibration device 1, reducing the overall volume of the sound-generating vibration device 1, and reducing the space occupancy rate of the sound-generating vibration device 1 in the electronic device.

[0060] At the same time, when the voice coil 22 vibrates, it will cause the shell 10 to vibrate. Since the reciprocating motion direction of at least part of the magnetic circuit component 32 in the present application is parallel to the vibration direction of the voice coil 22, when the coil 31 is energized, the magnetic circuit component 32 can actively vibrate under the action of the coil 31, and when the vibration frequency of the magnetic circuit component 32 is the same or approximately the same as the vibration frequency of the coil 22, and the vibration direction of the magnetic circuit component 32 is opposite to the vibration direction of the coil 22, it can offset the vibration of the shell 10 driven by the vibration of the voice coil 22, thereby keeping the shell 10 in a stable state. Even when the coil 31 is not energized, when the voice coil 22 vibrates, the magnetic circuit component 32 will vibrate with the voice coil 22 under the action of the voice coil 22, thereby offsetting part of the vibration of the shell 10, keeping the shell 10 in a stable state, and improving the user experience.

[0061] Specifically, in some embodiments of the present invention, the housing 10 is roughly rectangular in structure, including a first housing 11 and a second housing 12 that cooperate with each other, and the sound unit 20 and the vibration motor 30 are jointly arranged in a space enclosed by the first housing 11 and the second housing 12. The sound unit 20 is connected to the first housing 11, and the vibration motor 30 is connected to the second housing 12.

[0062] Combination Figures 6 to 11 As shown, in some embodiments of the present invention, the shell 10 includes a first side wall 121 and a second side wall 122 that are relatively arranged, and the first side wall 121 and the second side wall 122 are respectively arranged along the length direction of the shell 10, and the inner wall surface of the first side wall 121 and the inner wall surface of the second side wall 122 are respectively provided with at least one coil 31.

[0063] What needs instructions is that Figure 1 and Figure 4As shown, in the present application, the vibration direction of the voice coil 22 is the height direction of the shell 10, and in a plane perpendicular to the vibration direction of the voice coil 22, the extension direction of the long edge on the shell 10 is the length direction of the shell 10, and the extension direction of the short edge on the shell 10 is the width direction of the shell 10.

[0064] Specifically, the second shell 12 is provided with a first side wall 121 and a second side wall 122, which are respectively provided on both sides of the length direction of the bottom wall 13, and the two sides of the width direction of the bottom wall 13 are open and matched with the first shell 11. Among them, a coil 31 is respectively provided on the first side wall 121 and the second side wall 122, and the two coils 31 are respectively connected to the circuit board 40, and the coils 31 on both sides are respectively powered by the circuit board 40, so that the coils 31 on both sides form a parallel structure, and when the coils 31 are powered, the magnetic circuit assembly 32 can reciprocate in a direction parallel to the first side wall 121 and the second side wall 122 under the action of the magnetic field of the two coils 31, that is, the same as the vibration direction of the voice coil 22, so as to give the user a vibration prompt.

[0065] Combination Figures 6 to 11 As shown, in some embodiments of the present invention, the current direction of the coil 31 on one of the two inner side walls is opposite to that of the coil 31 on the other inner side wall.

[0066] Specifically, the current direction of the coil 31 on the first side wall 121 is configured opposite to the current direction of the coil 31 on the second side wall 122, so that the magnetic field generated when the coils 31 on the two side walls are energized drives the magnetic circuit assembly 32 to vibrate, giving the user a vibration prompt.

[0067] Combination Figure 2 , Figure 6 , Fig.10 and Fig.11 As shown, in some embodiments of the present invention, in some embodiments of the present invention, a plurality of first conductive sheets 41 and a plurality of second conductive sheets 42 which are conductively connected to each other are provided on the circuit board 40, the plurality of first conductive sheets 41 are provided between the shell 10 and the yoke 325, and are electrically connected to the coil 31, and the plurality of second conductive sheets 42 are provided outside the shell 10 and are electrically connected to an external power supply.

[0068] Specifically, there are four first conductive sheets 41, which are disposed between the bottom wall 123 and the magnetic yoke 325. The coil 31 is electrically connected to the two first conductive sheets 41 disposed on the same side to form an electrical circuit. There are two second conductive sheets 42, which are disposed outside the housing 10 and electrically connected to an external power source. The first conductive sheet 41 and the second conductive sheet 42 are electrically connected, so that the coil 31 and the external power source are connected through the circuit board 40, and the coil 31 is powered by the external power line.

[0069] Combination Figure 6 and Fig.11 As shown, in some embodiments of the present invention, a plurality of threading holes 3251 are provided on the yoke 325 , and the plurality of threading holes 3251 are arranged one-to-one corresponding to the plurality of first conductive sheets 41 , and the coil 31 and the first conductive sheet 41 are connected through the first lead 311 , and the first lead 311 passes through the threading holes 3251 .

[0070] Specifically, the circuit board 40 is fitted on the upper surface of the bottom wall 123, and the yoke 325 is arranged above the circuit board 40 and spaced apart from the circuit board 40. In order to prevent the yoke 325 from blocking the threading process of the first lead 311, a plurality of threading holes 3251 are provided on the yoke 325. The first lead 311 connecting the coil 31 and the first conductive sheet 41 passes through the threading holes 3151, thereby realizing the conductive connection between the coil 31 and the first conductive sheet 41.

[0071] In some embodiments of the present invention, multiple coils 31 may be arranged on the first side wall 121 and / or the second side wall 122, and the multiple coils 31 on the same side wall may be connected in series and then connected to the circuit board 40, or the multiple coils 31 on the same side wall may be connected to the circuit board 40 respectively.

[0072] Recombination Figures 6 to 11 As shown, in some embodiments of the present invention, the coil 31 is a flat strip-shaped ring structure, and the flat surface of the coil 31 is parallel to the vibration direction of the magnetic circuit assembly 32, and is respectively connected to the two inner side walls. The flat strip-shaped ring structure of the coil 31 is adapted to the shape of the first side wall 121 and the second side wall 122, so that the space occupied by the coil 31 in the second housing 12 can be effectively reduced, and the overall volume of the sound-generating vibration device 1 can be further reduced so that it can be assembled in the electronic device.

[0073] Combination Figure 2 , Figure 4 and Fig. 9 As shown, in some embodiments of the present invention, at least one mounting protrusion 1211 protruding toward the interior of the shell 10 is respectively provided on the two inner side walls of the shell 10 , and the coil 31 is sleeved on the outside of the mounting protrusion 1211 .

[0074] Specifically, a mounting protrusion 1211 is respectively provided on the inner wall surface of the first side wall 121 and the second side wall 122. The mounting protrusion 1211 is a bar-shaped structure. The coil 31 is sleeved on the outside of the mounting protrusion 1211 and is snap-fitted with the mounting protrusion 1211, so that the position of the coil 31 is fixed by the mounting protrusion 1211.

[0075] Combination Figures 4 to 8As shown, in some embodiments of the present invention, the number of the side magnets 322 is two, and the two side magnets 322 are symmetrically arranged on both sides of the center magnet 321, and are respectively spaced apart from the center magnet 321, and the bottom end of the voice coil 22 is inserted between the center magnet 321 and the side magnets 322. When the voice coil 22 is energized, the voice coil 22 reciprocates along its own axial direction under the action of the magnetic field of the magnetic circuit assembly 32, thereby driving the diaphragm 21 to vibrate and produce sound. By symmetrically arranging two side magnets 322 on both sides of the center magnet 321, the balance of the voice coil 22 during vibration can be effectively ensured. At the same time, since the magnetic circuit assembly 32 can also reciprocate along the axial direction of the voice coil 22, the vibration of the housing 10 caused by the vibration of the voice coil 22 can be offset, and when the sound-generating vibration device 1 only uses the sound-generating unit 20 to produce sound prompts, the overall vibration of the sound-generating vibration device 1 can be reduced or avoided.

[0076] like Figure 4 As shown, in some embodiments of the present invention, the magnetic field direction of the central magnet 321 and the magnetic field direction of the side magnet 322 are oppositely arranged and are both parallel to the axial direction of the voice coil 22 .

[0077] Specifically, Figure 4 The direction of the black arrow is the direction of the magnetic field of the central magnet 321 and the side magnet 322. The magnetic field of the central magnet 321 is vertically downward, and the magnetic field of the side magnet 322 is vertically upward, so that the magnetic fields of the two are set in opposite directions.

[0078] Recombination Figures 4 to 8 As shown, in some embodiments of the present invention, the magnetic circuit assembly 32 also includes a first magnetic conductive plate 323 and a second magnetic conductive plate 324, wherein the first magnetic conductive plate 323 is attached to the upper surface of the center magnet 321, and the second magnetic conductive plate 324 is attached to the upper surface of the side magnet 322, thereby enhancing the magnetic field strength of the center magnet 321 and the side magnet 322 through the first magnetic conductive plate 323 and the second magnetic conductive plate 324.

[0079] like Figure 5 As shown, in some embodiments of the present invention, the side magnet 322 includes a first magnetic portion 3221 and a second magnetic portion 3222, and the first magnetic portion 3221 and the second magnetic portion 3222 are separated and arranged along the length direction of the center magnet 321. By selecting a small-sized first magnetic portion 3221 and a second magnetic portion 3222 to form the side magnet 322, the reliability of the side magnet 322 can be effectively improved, and the side magnet 322 can be prevented from breaking when the housing 10 is impacted or dropped.

[0080] Recombination Figures 4 to 8As shown, in some embodiments of the present invention, the magnetic circuit assembly 32 further includes a yoke 325 , the center magnet 321 and the side magnet 322 are jointly arranged on the surface of the yoke 325 facing the voice coil 22 , and the yoke 325 is connected to the housing 10 via an elastic member 70 .

[0081] Specifically, the elastic member 70 is arranged along the length direction of the housing 10, and the yoke 325 is connected to both ends of the length direction of the housing 10 through the elastic member 70. The upper surface of the yoke 325 is provided with a central magnet 321 and two side magnets 322, and the central magnet 321 and the two side magnets 322 are supported by the yoke 325. There are four elastic members 70, and two elastic members 70 are respectively arranged at both ends of the length direction of the yoke 325, and the two elastic members 70 at the same end are arranged at intervals along the width direction of the yoke 325, so as to ensure the balance of the yoke 325 when it vibrates.

[0082] Combination Figure 2 , Figure 4 , Figure 5 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, a first damping block 51 is disposed between the housing 10 and the yoke 325 , and the first damping block 51 is connected to the housing 10 and / or the yoke 325 .

[0083] Specifically, the first damping block 51 is connected to the bottom wall 123 of the second housing 12, and the specific material can be selected as foam, so that when the magnetic circuit assembly 32 vibrates as a whole, it can effectively prevent the vibration amplitude of the magnetic circuit assembly 32 from being too large and hitting or damaging the bottom wall 123. There can be four first damping blocks 51, which are spaced at the center of the bottom wall 123 along the length direction and width direction of the bottom wall 123.

[0084] Recombination Figure 2 , Figure 4 , Figure 5 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, at least one leakage hole 1233 is provided on the plate surface of the shell 10 corresponding to the yoke 325, the leakage hole 1233 connects the inside and the outside of the shell 10, and / or a dustproof net 60 is provided at the leakage hole 1233.

[0085] Specifically, a plurality of leakage holes 1233 are provided on the bottom wall 123, and the leakage holes 1233 are connected to the inside and outside of the housing 10, so that when the magnetic circuit assembly 32 vibrates, the air pressure in the housing 10 can be balanced through the leakage holes 1233. At the same time, a dustproof net 60 is provided at the leakage holes 1233, which can effectively prevent dust from entering the inside of the housing 10 through the leakage holes 1233, thereby preventing dust from contaminating or damaging the electrical components in the housing 10.

[0086] Recombination Figure 4 , Figure 5 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, two first protrusions 1231 are provided at one end of the bottom wall 1233 in the length direction, and the two first protrusions 1231 are arranged at intervals along the width direction of the bottom wall 123, and two second protrusions 1232 are provided at the other end of the bottom wall 123 in the length direction, and the two second protrusions 1232 are arranged at intervals along the width direction of the bottom wall 123. The elastic member 70 at both ends of the yoke 325 is connected to the first protrusion 1231 and the second protrusion 1232 respectively, so that there is a certain gap between the elastic member 70 and the upper surface of the bottom wall 123, ensuring that the elastic member 70 has enough space to vibrate along the height direction of the housing 10, thereby ensuring that the magnetic circuit assembly 32 can vibrate along the height direction of the housing 10. Among them, the two ends of the elastic member 70 are connected to the yoke 325 and the bottom wall 123 respectively by welding.

[0087] Combination Figure 2 , Figure 6 and Fig.12 As shown, in some embodiments of the present invention, the elastic member 70 includes an external connection portion 71, an elastic portion 72 and an internal connection portion 73, the internal connection portion 73 is connected to the yoke 325, the external connection portion 71 is connected to both ends of the shell 10 in the length direction, and the elastic portion 72 has a plurality of bending sections for connecting the external connection portion 71 and the internal connection portion 73.

[0088] Specifically, the outer connection portion 371 is connected to the first protrusion 1231 or the second protrusion 1232 on the bottom wall 123, the inner connection portion 73 is connected to the yoke 325, and the outer connection portion 71 and the inner connection portion 73 are connected by the elastic portion 72, so that the yoke 325 is fixed in the second housing 12 by the elastic member 70, and the yoke 325 can be vibrated in a direction parallel to the vibration direction of the voice coil 22. At the same time, a plurality of bending sections are provided on the elastic portion 72, which can improve the elastic deformation capacity of the elastic portion 72.

[0089] Combination Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the present invention, the sound-generating vibration device 1 also includes a first conductive part and a second conductive part, and the first conductive part and the second conductive part are both arranged on the outside of the same side of the shell 10, the first conductive part is electrically connected to the voice coil 22, and the second conductive part is electrically connected to the coil 31.

[0090] The first conductive part and the second conductive part are arranged outside the same side of the housing 10, so as to facilitate connecting the sound unit 20 and the vibration motor 30 to an external power source respectively. Among them, a plurality of second conductive sheets 42 are arranged outside the housing 10 and form a second conductive part, and are used to connect to an external power source.

[0091] Combination Figure 2 , Figure 4 , Figures 13 to 16 As shown, in some embodiments of the present invention, the sound unit 20 includes a diaphragm 21 and a voice coil 22, the top of the voice coil 22 is connected to the bottom of the diaphragm 21, and is used to drive the diaphragm 21 to vibrate and produce sound. The bottom edge of the diaphragm 21 is connected to the top surface of the first shell 11, and the bottom end of the voice coil 22 is connected to the bottom surface of the first shell 11 through the centering support 23, so that the sound unit 20 is fixed to the first shell 11 and supports the sound unit 20 to vibrate and produce sound. In some embodiments of the present invention, the upper surface of the diaphragm 21 is also fitted with a dome 24, which is used to improve the rigidity of the diaphragm 21 and ensure the stability of the vibration of the diaphragm 21.

[0092] Combination Fig.17 and Fig.18 As shown, in some embodiments of the present invention, the diaphragm 21 is a conductive diaphragm, including a diaphragm body 211 and a conductive wire 212 . The conductive wire 212 is attached to the surface of the diaphragm body 211 facing the voice coil 22 , and the voice coil 22 is connected to the conductive wire 212 .

[0093] Specifically, the voice coil 22 is connected to the conductive wire 212 via the second lead 221. By attaching the conductive wire 212 to the surface of the diaphragm body 211 facing the voice coil 22 and connecting it to the voice coil 22, the arrangement of the conductive circuits in the housing 10 can be reduced, thereby facilitating assembly.

[0094] Combination Figure 2 , Figure 4 , Fig.13 and Fig.14 As shown, in some embodiments of the present invention, the housing 10 further includes a cover plate 13 , which is disposed on a surface of the diaphragm 21 facing away from the voice coil 22 and is connected to the first housing 11 and / or the diaphragm 21 .

[0095] Specifically, the cover 13 is a rectangular ring structure with an opening in the center. The cover 13 is arranged above the diaphragm 21 and fits with the edge of the diaphragm 21 to prevent the edge of the diaphragm 21 from warping, thereby further improving the connection reliability between the diaphragm 21 and the first shell 11.

[0096] Combination Figure 2 , Figures 17 to 19As shown, in some embodiments of the present invention, a metal insert 114 is provided on the first shell 11 and penetrates the first shell 11, one end surface of the metal insert 114 is electrically connected to the conductive wire 212, and the other end surface of the conductive insert 114 is provided on the outside of the shell 10 and forms a first conductive part.

[0097] Specifically, the metal insert 114 is integrally injection molded with the first housing 11, and is disposed through the first housing 11 along the height direction of the first housing 11. When the sound unit 20 is assembled with the first housing 11, the conductive wire 212 is just fitted to the top surface of the metal insert 114, so that the voice coil 22 is electrically connected to the metal insert 114, and is connected to an external power source through the bottom surface of the metal insert 114, thereby supplying power to the voice coil 22.

[0098] Combination Figures 17 to 20 As shown, in some embodiments of the present invention, the metal insert 114 includes a first straight plate portion 1141, a second straight plate portion 1142 and a third straight plate portion 1143 which are connected in sequence, and the first straight plate portion 1141, the second straight plate portion 1142 and the third straight plate portion 1143 together form a concave structure.

[0099] Specifically, the first straight plate portion 1141 is disposed at the top of the metal insert 114 and is connected to the conductive wire 212, and the third straight plate portion 1143 is disposed at the bottom of the metal insert 114 and is connected to an external power source. Further, to facilitate the connection between the first straight plate portion 1141 and the conductive wire 212, the first straight plate portion 1141 may protrude or be flush with the top end surface of the first shell 11, and to facilitate the connection between the third straight plate portion 1143 and the external power source, the third straight plate portion 1143 may protrude or be flush with the bottom end surface of the first shell 11. By enclosing the first straight plate portion 1141, the second straight plate portion 1142 and the third straight plate portion 1143 into a concave structure, it is convenient to fix the metal insert 114 in the first shell 11 through the first straight plate portion 1141 and the third straight plate portion 1143 during the injection molding process to prevent the metal insert 114 from slipping off.

[0100] Combination Figure 2 and Figure 6 As shown, in some embodiments of the present invention, the first conductive part and the second conductive part are both arranged on one side of the length direction of the housing 10. That is, the second conductive sheet 42 and the metal insert 114 are both arranged on one side of the length direction of the housing 10, which is due to the circuit board 40 being arranged along the length direction of the housing 10.

[0101] Recombination Figure 2 , Figure 4 , Fig.17 and Fig.19 As shown, in some embodiments of the present invention, the first shell 11 includes a bracket 113 , and the bracket 113 and the second shell 12 are welded.

[0102] By connecting the first shell 11 and the second shell 12 by welding, the arrangement of the plug-in matching structure can be reduced, the assembly and fixation of the first shell 11 and the second shell 12 are facilitated, and the connection reliability of the first shell 11 and the second shell 12 is improved.

[0103] Specifically, in some embodiments of the present invention, the first shell 11 further includes a first injection molding part 111 and a second injection molding part 112 disposed at both ends of the first shell 11 in the length direction, and a bracket 113 is used to connect the first injection molding part 111 and the second injection molding part 112. The first injection molding part 111 and the second injection molding part 112 are both plastic parts, such as plastic, and the bracket 113 is a metal part, and the two end parts of the bracket 113 in the length direction are embedded in the first injection molding part 111 and the second injection molding part 112 to form the first shell 11. The second shell 12 is provided with a first side wall 121 and a second side wall 122 along the length direction, which are respectively welded to the bracket 113. The second shell 12 is made of metal as a whole.

[0104] Combination Figure 2 , Fig.17 and Fig.19 As shown, in some embodiments of the present invention, a plug-in end 1111 is respectively disposed at both ends of the first injection molding part 111 and the second injection molding part 112 in the width direction, and the second shell 12 is provided with a positioning portion matching the plug-in end 1111 .

[0105] When the first shell 11 and the second shell 12 are assembled, the plug end 1111 is first inserted into the positioning portion to pre-position the first shell 11 and the second shell 12, and then the bracket 113 and the second shell 12 are connected by welding.

[0106] Combination Figure 2 , Figure 3 , Figure 4 , Fig.19 and Fig.21 As shown, in some embodiments of the present invention, the bracket 113 includes a first connecting portion 1131 and a second connecting portion 1132 that are relatively arranged, and the first connecting portion 1131 and the second connecting portion 1132 are respectively arranged along the length direction of the shell 10. The bracket 113 also includes a first fixing portion 1133 and a second fixing portion 1134 that are relatively arranged, and the first fixing portion 1133 and the second fixing portion 1134 are respectively arranged along the width direction of the shell 10. The first connecting portion 1131, the first fixing portion 1133, the second connecting portion 1132 and the second fixing portion 1134 are connected in an end-to-end order.

[0107] Specifically, the first fixing portion 1133 is connected to the first injection molding portion 111, the second fixing portion 1134 is connected to the second injection molding portion 112, the first connecting portion 1131 is welded to the first side wall 121, and the second connecting portion 1132 is welded to the second side wall 122. The first connecting portion 1131 and the second connecting portion 1132 are arranged above the first fixing portion 1133 and the second fixing portion 1134 along the height direction of the housing 10, so that the first fixing portion 1133 is conveniently inserted under the first injection molding portion 111, and the second fixing portion 1134 is inserted under the second injection molding portion 112, and is welded to the second housing 12 through the first connecting portion 1131 and the second connecting portion 1132.

[0108] Recombination Figure 2 , Figure 3 , Figure 4 , Fig.19 and Fig.21 As shown, in some embodiments of the present invention, the first fixing portion 1133 is connected to the first injection molding portion 111, the first fixing portion 1133 is provided with a first limiting protrusion 1135 toward the second fixing portion 1134, the second fixing portion 1134 is connected to the second injection molding portion 112, and the second fixing portion 1134 is provided with a second limiting protrusion 1136 toward the first fixing portion 1133.

[0109] By setting the first limiting protrusion 1135 and the second limiting protrusion 1136, the amplitude of the vibration of the magnetic circuit assembly 32 can be limited to prevent the vibration amplitude of the magnetic circuit assembly 32 from being too large, thereby hitting the diaphragm 21 and damaging the diaphragm 21. Further, in order to prevent the upper surface of the yoke 325 from colliding with the first shell 11 during the vibration process, a second damping block 52 is also provided between the yoke 325 and the first limiting protrusion 1135 and between the yoke 325 and the second limiting protrusion 1136, and the second damping block 52 can be fitted on the bottom surface of the first limiting protrusion 1135 and the second limiting protrusion 1136. The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A sound-generating vibration device, It is characterized in that include: A housing, the housing comprising a first housing and a second housing that match each other, the first housing comprising a bracket, and the bracket and the second housing are welded; A sound-generating unit, the sound-generating unit being connected to the first housing, the sound-generating unit comprising a diaphragm and a voice coil for driving the diaphragm to vibrate and generate sound; A vibration motor, the vibration motor comprising a coil and a magnetic circuit assembly, at least one of the coils is respectively disposed on two inner side walls of the second shell that are opposite to each other, the magnetic circuit assembly comprises a central magnet and at least one side magnet disposed on the side of the central magnet, and the side magnet is spaced apart from the central magnet; Among them, at least part of the voice coil is inserted between the side magnet and the center magnet, and reciprocates along its own axial direction, the magnetic circuit component is arranged between the two inner walls of the shell, and is spaced apart from the coil, at least part of the magnetic circuit component reciprocates under the joint action of the coils on the two inner walls, and the reciprocating direction of at least part of the magnetic circuit component is parallel to the vibration direction of the voice coil.

2. The sound-generating vibration device according to claim 1, It is characterized in that The first shell further includes a first injection-molded part and a second injection-molded part disposed at both ends of the first shell in a length direction, and the bracket is used to connect the first injection-molded part and the second injection-molded part.

3. The sound-generating vibration device according to claim 2, It is characterized in that The second shell includes a first side wall and a second side wall that are oppositely arranged. The first side wall and the second side wall are respectively arranged along the length direction of the second shell. The first side wall and the second side wall are respectively welded to the bracket.

4. The sound-generating vibration device according to claim 2, It is characterized in that The bracket includes a first connecting portion and a second connecting portion that are arranged opposite to each other, and the first connecting portion and the second connecting portion are respectively arranged along the length direction of the shell. The bracket also includes a first fixing portion and a second fixing portion that are arranged opposite to each other, and the first fixing portion and the second fixing portion are respectively arranged along the width direction of the shell. The first connecting portion, the first fixing portion, the second connecting portion and the second fixing portion are connected in an end-to-end order.

5. The sound-generating vibration device according to claim 4, It is characterized in that The first connection portion and the second connection portion are arranged above the first fixing portion and the second fixing portion along the height direction of the shell, and the first connection portion and the second connection portion are welded to the second shell respectively.

6. The sound-generating vibration device according to claim 4, It is characterized in that The first fixing portion is connected to the first injection portion, and the first fixing portion is provided with a first limiting protrusion facing the second fixing portion. The second fixing portion is connected to the second injection portion, and the second fixing portion is provided with a second limiting protrusion facing the first fixing portion.

7. The sound-generating vibration device according to claim 1, It is characterized in that The two inner side walls of the second shell are respectively provided with at least one mounting protrusion protruding toward the interior of the shell, and the coil is sleeved outside the mounting protrusion.

8. The sound-generating vibration device according to claim 1, It is characterized in that The shell further includes a cover plate, which is arranged on a surface of the diaphragm facing away from the voice coil and is connected to the first shell and / or the diaphragm.

9. The sound-generating vibration device according to claim 1, It is characterized in that The magnetic circuit assembly further includes a yoke. The central magnet and the side magnets are jointly arranged on a surface of the yoke facing the voice coil. The yoke is connected to both ends of the second shell in the length direction through an elastic member.

10. An electronic device, It is characterized in that A sound-generating vibration device according to any one of claims 1 to 9.

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