A multifunctional sound-generating device

Abstract

The present invention provides a multifunctional sound-generating device, comprising a shell having a receiving cavity and a sound-generating unit placed in the receiving cavity, the sound-generating unit comprising a vibration system and a magnetic circuit system driving the vibration system to vibrate and generate sound along a first direction, the magnetic circuit system comprising a main magnetic steel and a secondary magnetic steel arranged around the main magnetic steel to form a magnetic gap; the multifunctional sound-generating device also comprises an elastic component placed in the receiving cavity and fixedly connected to the shell, a counterweight block connected to the elastic component to be suspended in the receiving cavity, and a driving coil fixed to the counterweight block and vibrating along a second direction together with the counterweight block, the driving coil comprising a first side and a second side arranged opposite to the first side, and in the first direction, the first side is arranged opposite to the main magnetic steel, and the second side is arranged opposite to the secondary magnetic steel; the second direction is perpendicular to the first direction.

Description

[Technical field]

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a multifunctional sound-generating device. [Background technology]

[0002] With the development of electronic technology, portable consumer electronic devices are becoming more and more popular, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices. These electronic devices generally provide system feedback through voice and / or vibration, such as incoming call prompts, navigation prompts, vibration feedback of game consoles, etc.

[0003] In the prior art, the vibration feedback and voice feedback of electronic devices are respectively completed by different devices. However, the development trend of electronic devices is to be short, small, light and thin. The more devices there are, the more unfavorable it is to reduce the size of electronic devices. [Summary of the invention]

[0004] The purpose of the present invention is to provide a multifunctional sound-generating device, which has both vibration feedback function and voice feedback function, and is conducive to reducing the volume of electronic equipment.

[0005] The present invention provides a multifunctional sound-generating device, comprising a shell having a receiving cavity and a sound-generating unit placed in the receiving cavity, wherein the sound-generating unit comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound in a first direction, wherein the magnetic circuit system comprises a main magnetic steel and a secondary magnetic steel arranged around the main magnetic steel to form a magnetic gap; the multifunctional sound-generating device further comprises:

[0006] An elastic component placed in the receiving cavity and fixedly connected to the shell, a counterweight block connected to the elastic component to be suspended in the receiving cavity, and a driving coil fixed to the counterweight block and vibrating along a second direction together with the counterweight block, the driving coil comprising a first side and a second side arranged opposite to the first side, and in the first direction, the first side is arranged relatively spaced apart from the main magnetic steel, and the second side is arranged relatively spaced apart from the secondary magnetic steel; wherein the second direction is perpendicular to the first direction.

[0007] As an embodiment of the present invention, the polarity of one end of the main magnetic steel facing the driving coil is opposite to the polarity of one end of the auxiliary magnetic steel facing the driving coil.

[0008] As an embodiment of the present invention, the first side and the second side together enclose a winding hole, and in the first direction, the winding hole and the magnetic gap are arranged opposite to each other.

[0009] As an embodiment of the present invention, the counterweight block is formed with a mounting groove, and the driving coil is fixed in the mounting groove;

[0010] The first side edge and the second side edge together enclose a winding hole, and a groove bottom protrusion of the installation groove forms a positioning portion for alignment and assembly into the winding hole.

[0011] As an embodiment of the present invention, the magnetic circuit system also includes a yoke for fixedly connecting the main magnetic steel and the auxiliary magnetic steel, the yoke is formed with an avoidance space, the first side edge is relatively spaced from the main magnetic steel via the avoidance space, and the second side edge is relatively spaced from the auxiliary magnetic steel via the avoidance space.

[0012] As an embodiment of the present invention, in the first direction, the yoke portion is located in the mounting groove.

[0013] As an embodiment of the present invention, the counterweight block includes a main plate portion formed with the mounting groove, and side plate portions formed by bending and extending from two ends of the main plate portion that are oppositely arranged along a third direction in a direction toward the sound-emitting unit; wherein the third direction is perpendicular to the first direction and the second direction;

[0014] A chamfer is formed on the outer edge of the end surface of the auxiliary magnet facing the driving coil, and the side plate portion includes a first portion located on the peripheral side of the sound-emitting unit and a second portion extending from the main plate portion and opposite to the chamfer to be connected to the first portion.

[0015] As an embodiment of the present invention, the sound unit further includes a basin frame;

[0016] The vibration system includes a voice coil inserted in the magnetic gap, an upper diaphragm and a dome, the upper diaphragm includes a first folding ring portion, a first outer flange extending from the outer edge of the first folding ring portion, and a first inner flange extending from the inner edge of the first folding ring portion; wherein the first outer flange is fixed to the basin frame, the first inner flange is fixed to the dome, and the dome is fixedly connected to the voice coil.

[0017] As an embodiment of the present invention, the sound unit further includes a basin frame;

[0018] The vibration system includes a voice coil inserted in the magnetic gap, an upper diaphragm, a lower diaphragm arranged opposite to the upper diaphragm along the first direction, and a frame arranged between the upper diaphragm and the lower diaphragm; the frame includes a main body, a first bending portion extending from the inner edge of the main body, and a second bending portion extending from the outer edge of the main body, and the voice coil is fixed to the first bending portion; the upper diaphragm includes a first folding ring portion, a first outer flange extending from the outer edge of the first folding ring portion, and a first inner flange extending from the inner edge of the first folding ring portion, the first outer flange is fixed to the basin frame, and the first inner flange is fixed to the main body of the frame; the lower diaphragm includes a second folding ring portion arranged opposite to the first folding ring portion, a second outer flange extending from the outer edge of the second folding ring portion, and a second inner flange extending from the inner edge of the second folding ring portion; the second outer flange is fixed to the end surface of the basin frame away from the first outer flange, and the second inner flange is fixed to the second bending portion.

[0019] As an embodiment of the present invention, the upper diaphragm also includes a third folding ring portion arranged on the inner side of the first folding ring portion, a third outer flange extending from the outer edge of the third folding ring portion, and a third inner flange extending from the inner edge of the third folding ring portion, and the sound unit also includes a positioning ring mounted on the magnetic circuit system, wherein the third outer flange is fixed on the main body of the frame, and the third inner flange is fixed on the positioning ring.

[0020] As an embodiment of the present invention, the vibration system further comprises a spherical top arranged on the main body of the frame, and the spherical top is located on the inner side of the first inner flange.

[0021] The beneficial effect of the present invention is that the counterweight is suspended in the receiving cavity by an elastic component, and the driving coil is fixed on the counterweight, and the first side edge of the driving coil is arranged relatively spaced from the main magnet along the first direction (the vibration direction of the vibration system), and the second side edge of the driving coil is arranged relatively spaced from the auxiliary magnet along the first direction, so that the counterweight will vibrate along the second direction perpendicular to the first direction with the driving coil under the interaction of the main magnet, the auxiliary magnet and the driving coil, that is, the entire driving coil and the counterweight are used as a mover, and the sound-generating unit with the main magnet and the auxiliary magnet is used as a stator, and the driving coil drives the counterweight to vibrate through the interaction force between the driving coil and the main magnet and the auxiliary magnet, thereby realizing the vibration feedback of the device. The device in this technical solution has both vibration feedback function and voice feedback function, which is conducive to reducing the volume of electronic equipment.

Brief Description of the Drawings

[0022] Figure 1 A schematic diagram of the overall structure of a multifunctional sound-generating device provided for one embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0024] Figure 3 It is a partial structural schematic diagram of a multifunctional sound-generating device of the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the decomposition structure;

[0026] Figure 5 It is a schematic diagram of a partially exploded structure of a multifunctional sound-generating device;

[0027] Figure 6 for Figure 1 Sectional view along the A-A direction;

[0028] Figure 7 A cross-sectional view of a multifunctional sound-generating device provided for another embodiment of the present invention;

[0029] Figure 8 A cross-sectional view of a multifunctional sound-generating device provided for another embodiment of the present invention;

[0030] Fig. 9 A cross-sectional view of a multifunctional sound-generating device provided for another embodiment of the present invention;

[0031] Fig.10 A cross-sectional view of a multifunctional sound-generating device provided for another embodiment of the present invention;

[0032] Fig.11 for Figure 7 A partial enlarged view of point C in the middle;

[0033] Fig.12 for Figure 8 A partial enlarged view of point D in the middle.

[0034] In the figure:

[0035] 100, multifunctional sound-generating device; 10, housing; 10a, receiving cavity; 10b, sound outlet; 11, frame; 12, upper cover; 13, bottom plate; 20, sound-generating unit; 21, vibration system; 211, voice coil; 212, upper diaphragm; 2121, first folding ring; 2122, first outer flange; 2123, first inner flange; 2124, third folding ring; 2125, third outer flange; 2126, third inner flange; 213, skeleton; 2131, main body; 2132, first bending portion; 2133, second bending portion; 214, dome; 215, lower diaphragm; 2151, second folding ring; 2152, second outer flange; 2153, second inner flange; 22, magnetic circuit system; 22a, magnetic gap; 221, main magnetic steel; 222, auxiliary magnetic steel; 2221, chamfered mouth; 2 23. yoke; 2231. avoidance space; 224. main pole core; 225. secondary pole core; 226. upper magnetic steel; 2261. base; 2262. top; 23. basin frame; 24. positioning ring; 25. flexible circuit board; 251. first fixed arm; 252. second fixed arm; 253. elastic arm; 30. counterweight; 31. main board; 311. mounting groove; 312. positioning part; 32. side plate; 321. first part; 322. second part; 40. elastic component; 41. first elastic member; 411. first elastic arm; 412. second elastic arm; 413. first connecting arm; 42. second elastic member; 421. third elastic arm; 422. fourth elastic arm; 423. second connecting arm; 50. driving coil; 50a. winding hole; 51. first side edge; 52. second side edge. [Specific implementation method]

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention provides a multifunctional sound-generating device 100, which can be used in electronic devices to provide feedback prompts by emitting sound or by vibrating. Figure 1-Figure 12 The multifunctional sound-generating device 100 includes a shell 10 having a receiving cavity 10a and a sound-generating unit 20 received in the receiving cavity 10a and dividing the receiving cavity 10a into a front cavity and a rear cavity. The shell 10 is provided with a sound outlet 10b connected to the front cavity to achieve sound output; the rear cavity can be filled with sound-absorbing powder to improve the low-frequency acoustic performance of the device.

[0040] Among them, the sound-emitting unit 20 includes a vibration system 21 and a magnetic circuit system 22 that drives the vibration system 21 to vibrate along a first direction to produce sound. The magnetic circuit system 22 includes a main magnet 221 and an auxiliary magnet 222 that is arranged around the main magnet 221 to form a magnetic gap 22a. The vibration system 21 includes a voice coil 211 inserted in the magnetic gap 22a. The voice coil 211 vibrates under the action of the main magnet 221 and the auxiliary magnet 222 to realize the vibration of the entire vibration system 21, thereby realizing the voice feedback prompt of the device.

[0041] See also Figure 2 and Figure 6 The housing 10 includes a frame 11, an upper cover 12 covering one end of the frame 11, and a bottom plate 13 covering the other end of the frame 11. The frame 11, the upper cover 12 and the bottom plate 13 together enclose a receiving cavity 10a.

[0042] See also Figure 2-Figure 4 , Figure 6 In order to realize the vibration feedback function of the device, the device also includes an elastic component 40, a counterweight block 30 and a driving coil 50. The elastic component 40 is placed in the receiving cavity 10a and is fixedly connected to the shell 10. The counterweight block 30 is connected to the elastic component 40 to be suspended in the receiving cavity 10a. The driving coil 50 is fixed to the counterweight block 30 and vibrates along the second direction together with the counterweight block 30; the driving coil 50 includes a first side 51 and a second side 52 arranged opposite to the first side 51, and in the first direction, the first side 51 is arranged opposite to the main magnetic steel 221, and the second side 52 is arranged opposite to the auxiliary magnetic steel 222.

[0043] Among them, Figure 1 , Figure 3 as well as Figure 6-Figure 8 As shown, the Z direction is the first direction, the X direction is the second direction, and the Y direction is the third direction. The first direction is the vibration direction of the vibration system 21, the second direction is the vibration direction of the counterweight 30, the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first direction and the second direction.

[0044] In the present invention, the counterweight 30 is suspended in the receiving cavity 10a by the elastic component 40, and the driving coil 50 is fixed on the counterweight 30, and the first side 51 of the driving coil 50 is arranged relatively spaced with the main magnetic steel 221 along the first direction (the vibration direction of the vibration system 21), and the second side 52 of the driving coil 50 is arranged relatively spaced with the auxiliary magnetic steel 222 along the first direction, so that the counterweight 30 will vibrate along the second direction perpendicular to the first direction with the driving coil 50 under the interaction between the main magnetic steel 221, the auxiliary magnetic steel 222 and the driving coil 50, that is, the entire driving coil 50 and the counterweight 30 are used as a mover, and the sound-generating unit 20 with the main magnetic steel 221 and the auxiliary magnetic steel 222 is used as a stator, and the driving coil 50 drives the counterweight 30 to vibrate through the interaction force between the driving coil 50 and the main magnetic steel 221 and the auxiliary magnetic steel 222, thereby realizing the vibration feedback of the device. The device in the present technical solution has both vibration feedback function and voice feedback function, which is conducive to reducing the volume of the electronic device.

[0045] It should be noted that the polarity of the end of the main magnetic steel 221 facing the driving coil 50 is opposite to the polarity of the end of the auxiliary magnetic steel 222 facing the driving coil 50 , so that the driving coil 50 can vibrate.

[0046] In some specific embodiments, see Figure 6 The first side 51 and the second side 52 together enclose a winding hole 50a. In the first direction, the winding hole 50a is arranged opposite to the magnetic gap 22a, optimizing the relative position between the driving coil 50 and the main magnetic steel 221 and the auxiliary magnetic steel 222 to increase the relative force between the driving coil 50 and the main magnetic steel 221 and the auxiliary magnetic steel 222, thereby ensuring the driving of the sound unit 20.

[0047] The driving coil 50 may be one or more. Figure 3 and Figure 6 As shown, there are two driving coils 50, and the two driving coils 50 are arranged along the second direction and fixed on the counterweight 30. By increasing the number of driving coils 50 in a limited space, the relative area between the driving coil 50 and the main magnet 221, and the relative area between the driving coil 50 and the secondary magnet 222 can be increased, thereby increasing the interaction force between the driving coil 50 and the main magnet 221, and the secondary magnet 222.

[0048] In one embodiment, see Figure 2-Figure 4The elastic component 40 includes a first elastic member 41 and a second elastic member 42. The first elastic member 41 includes a first elastic arm 411 for connecting to the shell 10, a second elastic arm 412 for connecting to the counterweight 30, and a first connecting arm 413 connected between the first elastic arm 411 and the second elastic arm 412. The second elastic member 42 includes a third elastic arm 421 for connecting to the shell 10, a fourth elastic arm 422 for connecting to the counterweight 30, and a second connecting arm 423 connected between the third elastic arm 421 and the fourth elastic arm 422.

[0049] In some specific embodiments, the first elastic arm 411 and the third elastic arm 421 are arranged on both sides of the counterweight block 30 along the third direction, the second elastic arm 412 and the fourth elastic arm 422 are arranged on both sides of the counterweight block 30 along the third direction, and the first connecting arm 413 and the second connecting arm 423 are arranged at both ends of the counterweight block 30 along the second direction; thereby achieving stable support of the counterweight block 30 by the elastic component 40.

[0050] In some specific embodiments, the first elastic arm 411 may be connected to the housing 10 via an adhesive adhesive, and the second elastic arm 412 may be connected to the counterweight 30 via an adhesive adhesive.

[0051] The third elastic arm 421 may be connected to the housing 10 via an adhesive adhesive, and the fourth elastic arm 422 may be connected to the counterweight 30 via an adhesive adhesive.

[0052] The structure of the sound-emitting unit 20 is described below by way of example:

[0053] In one embodiment, see Fig.10 The vibration system 21 further includes an upper diaphragm 212 and a dome 214; the upper diaphragm 212 includes a first folding ring portion 2121, a first outer flange 2122 extending from the outer edge of the first folding ring portion 2121, and a first inner flange 2123 extending from the inner edge of the first folding ring portion 2121. The sound unit 20 further includes a basin frame 23, wherein the first outer flange 2122 is fixed on the basin frame 23, the first inner flange 2123 is fixed to the dome 214, and the dome 214 is fixedly connected to the voice coil 211, so that the voice coil 211 drives the upper diaphragm 212 to vibrate.

[0054] In another embodiment, see Fig. 9The sound-emitting unit 20 also includes a basin frame 23, and the vibration system 21 also includes an upper diaphragm 212, a lower diaphragm 215 arranged opposite to the upper diaphragm 212 along a first direction, and a skeleton 213 arranged between the upper diaphragm 212 and the lower diaphragm 215; the skeleton 213 includes a main body 2131, a first bending portion 2132 extending from the inner edge of the main body 2131, and a second bending portion 2133 extending from the outer edge of the main body 2131, and the voice coil 211 is fixed to the first bending portion 2132; the upper diaphragm 212 includes a first folding ring portion 2121, a first outer flange 2122 extending from the outer edge of the first folding ring portion 2121, and a second bending portion 2133 extending from the outer edge of the main body 2131. The first inner flange 2123 is formed by extending from the inner edge of the first folding ring portion 2121, the first outer flange 2122 is fixed on the basin frame 23, and the first inner flange 2123 is fixed on the main body 2131 of the skeleton 213; the lower diaphragm 215 includes a second folding ring portion 2151 arranged opposite to the first folding ring portion 2121, a second outer flange 2152 extending from the outer edge of the second folding ring portion 2151, and a second inner flange 2153 extending from the inner edge of the second folding ring portion 2151; the second outer flange 2152 is fixed on the end face of the basin frame 23 away from the first outer flange 2122, and the second inner flange 2153 is fixed to the second bending portion 2133.

[0055] In addition, the vibration system 21 also includes a spherical top 214 set on the main body 2131 of the skeleton 213, and the spherical top 214 is located on the inner side of the first inner flange 2123. The spherical top 214 can strengthen the strength of the skeleton 213, improve the torsion resistance and anti-swaying ability of the skeleton 213, and improve the acoustic performance of the sound unit 20.

[0056] See also Fig. 9 , there are two lower diaphragms 215, and the two lower diaphragms 215 are arranged along the second direction to be opposite to the two ends of the upper diaphragm 212; the second folding ring portion 2151 is formed by the lower diaphragm 215 protruding toward the first folding ring portion 2121, so that the space on the side of the second folding ring portion 2151 away from the first folding ring portion 2121 is saved; furthermore, the first connecting arm 413 can be located on the side of one of the second folding ring portions 2151 away from the first folding ring portion 2121, and the second connecting arm 423 can be located on the side of the other second folding ring portion 2151 away from the first folding ring portion 2121. In this way, the first connecting arm 413 and the second connecting arm 423 are moved away from the inner wall of the housing 10, and the distance between the first connecting arm 413 and the housing 10 and the distance between the second connecting arm 423 and the housing 10 are increased, thereby increasing the space of the back cavity, which can be used to fill the sound-absorbing powder and improve the acoustic performance of the device.

[0057] Among them, the sound unit 20 also includes a flexible circuit board 25 for electrically connecting to the voice coil 211, and the flexible circuit board 25 includes a first fixed arm 251 fixed to the second outer flange 2152, a second fixed arm 252 fixed to the second inner flange 2153, and an elastic arm 253 connected between the first fixed arm 251 and the second fixed arm 252.

[0058] In another embodiment, see Figure 7 The sound-emitting unit 20 also includes a basin frame 23, and the vibration system 21 also includes an upper diaphragm 212, a lower diaphragm 215 arranged opposite to the upper diaphragm 212 along a first direction, and a skeleton 213 arranged between the upper diaphragm 212 and the lower diaphragm 215; the skeleton 213 includes a main body 2131, a first bending portion 2132 extending from the inner edge of the main body 2131, and a second bending portion 2133 extending from the outer edge of the main body 2131, and the voice coil 211 is fixed to the first bending portion 2132; the upper diaphragm 212 includes a first folding ring portion 2121, a first outer flange 2122 extending from the outer edge of the first folding ring portion 2121, and a first inner flange 2123 extending from the inner edge of the first folding ring portion 2121, the first outer flange 2122 is fixed on the basin frame 23, and the first inner flange 2123 is fixed on the main body 2131 of the skeleton 213; the lower diaphragm 215 includes a first outer flange 2122 extending from the outer edge of the first folding ring portion 2121, and the first inner flange 2123 is fixed on the main body 2131 of the skeleton 213; A second folding ring portion 2151 arranged opposite to the folding ring portion 2121, a second outer flange 2152 extending from the outer edge of the second folding ring portion 2151, and a second inner flange 2153 extending from the inner edge of the second folding ring portion 2151; the second outer flange 2152 is fixed on the end surface of the basin frame 23 away from the first outer flange 2122, and the second inner flange 2153 is fixed to the second bending portion 2133; the upper diaphragm 212 also includes a third folding ring portion 2124 arranged on the inner side of the first folding ring portion 2121, a third outer flange 2125 extending from the outer edge of the third folding ring portion 2124, and a third inner flange 2126 extending from the inner edge of the third folding ring portion 2124, and the sound unit 20 also includes a positioning ring 24 sleeved on the magnetic circuit system 22, wherein the third outer flange 2125 is fixed on the main body 2131 of the skeleton 213, and the third inner flange 2126 is fixed on the positioning ring 24.

[0059] See also Figure 7 and Fig.11, there are two lower diaphragms 215, and the two lower diaphragms 215 are arranged along the second direction to be opposite to the two ends of the upper diaphragm 212; the second folding ring portion 2151 is formed by the lower diaphragm 215 protruding toward the first folding ring portion 2121, so that the space on the side of the second folding ring portion 2151 away from the first folding ring portion 2121 is saved; furthermore, the first connecting arm 413 is located on the side of one of the second folding ring portions 2151 away from the first folding ring portion 2121, and the second connecting arm 423 can be located on the side of the other second folding ring portion 2151 away from the first folding ring portion 2121. In this way, the first connecting arm 413 and the second connecting arm 423 are moved away from the inner wall of the housing 10, and the distance between the first connecting arm 413 and the housing 10 and the distance between the second connecting arm 423 and the housing 10 are increased, thereby increasing the space of the back cavity, which can be used to fill the sound-absorbing powder and improve the acoustic performance of the device.

[0060] The sound unit 20 also includes a flexible circuit board 25 for electrically connecting to the voice coil 211 , and the flexible circuit board 25 includes a first fixed arm 251 fixed to the second outer flange 2152 , a second fixed arm 252 fixed to the second inner flange 2153 , and an elastic arm 253 connected between the first fixed arm 251 and the second fixed arm 252 .

[0061] In one embodiment, see Figure 3 and Figure 4 The counterweight block 30 is formed with a mounting groove 311, and the driving coil 50 is fixed in the mounting groove 311. The mounting groove 311 not only realizes the mounting of the driving coil 50 relative to the counterweight block 30, but also partially overlaps the thickness of the driving coil 50 with the thickness of the counterweight block 30, thereby reducing the thickness of the device and facilitating the development of thinness and lightness.

[0062] Furthermore, the groove bottom protrusion of the installation groove 311 forms a positioning portion 312 for aligning and assembling into the winding hole 50a. The positioning portion 312 can realize the rapid positioning and installation of the driving coil 50.

[0063] See also Figure 8 and Fig.12The counterweight block 30 includes a main plate portion 31 for forming a mounting groove 311 , and side plate portions 32 formed by bending and extending from two ends of the main plate portion 31 that are oppositely arranged along the third direction in a direction toward the sound-emitting unit 20 . Since the counterweight 30 vibrates along the second direction, the space formed by the counterweight 30 and the shell 10 in the second direction is used for vibration; in order to increase the weight of the counterweight 30 to improve the vibration effect of the device, the counterweight 30 not only includes a main board portion 31 for fixing the drive coil 50, but also includes two side plate portions 32, and the two side plate portions 32 are formed by bending and extending the two ends of the main board portion 31 along the third direction, and the side plate portions 32 are extended in the direction toward the sound-emitting unit 20, that is, the side plate portions 32 are accommodated by means of the space formed by the counterweight 30 and the shell 10 in the third direction, and the space formed by the sound-emitting unit 20 and the shell 10 in the third direction, so as to increase the weight of the counterweight 30; on the other hand, the assembly of the counterweight 30 relative to the sound-emitting unit 20 can be guided by the two side plate portions 32, thereby improving the assembly speed and quality.

[0064] In some specific embodiments, see Figure 8 and Fig.12 The outer edge of the end surface of the secondary magnetic steel 222 facing the driving coil 50 is formed with a chamfered opening 2221, and the side plate portion 32 includes a first portion 321 located on the peripheral side of the sound-emitting unit 20 and a second portion 322 extending from the main plate portion 31 and connected to the first portion 321 relative to the chamfered opening 2221. By providing the chamfered opening 2221 on the secondary magnetic steel 222, the second portion 322 can be arranged relative to the chamfered opening 2221 to increase the thickness of the second portion 322, which, on the one hand, strengthens the connection between the first portion 321 and the main plate portion 31, and on the other hand, increases the weight of the counterweight block 30.

[0065] Among them, the magnetic circuit system 22 also includes a yoke 223 for fixedly connecting the main magnetic steel 221 and the auxiliary magnetic steel 222. The yoke 223 forms an avoidance space 2231. The first side 51 is relatively spaced from the main magnetic steel 221 through the avoidance space 2231, and the second side 52 is relatively spaced from the auxiliary magnetic steel 222 through the avoidance space 2231.

[0066] In some specific embodiments, see Figure 6-Figure 10 In the first direction, the yoke 223 is partially located in the mounting groove 311. While ensuring that the yoke 223 avoids the drive coil 50, the yoke 223 is partially accommodated in the mounting groove 311 of the counterweight 30. Therefore, the drive coil 50 is also partially located in the avoidance space 2231 of the yoke 223. The thickness of the counterweight 30, the drive coil 50 and the yoke 223 are partially overlapped, which can further reduce the increase in the thickness of the device caused by the drive coil 50 and the counterweight 30, that is, it is conducive to reducing the thickness of the device.

[0067] Furthermore, the yoke 223 is located between the two driving coils 50 , the middle portion of the yoke 223 is fixedly connected to the main magnetic steel 221 , and both ends of the yoke 223 are fixedly connected to the auxiliary magnetic steel 222 .

[0068] See also Figure 6-Figure 10 The magnetic circuit system 22 further includes a main pole core 224 attached to the first main magnetic steel 221 and a secondary pole core 225 surrounding the main pole core 224 and attached to the secondary magnetic steel 222 .

[0069] In addition, see Figure 6-Figure 8 The magnetic circuit system 22 further includes an upper magnetic steel 226 attached to the main pole core 224 away from the main magnetic steel 221 , and the positioning ring 24 surrounds and abuts against the upper magnetic steel 226 .

[0070] In some specific embodiments, the upper magnetic steel 226 includes a base 2261 abutting against the main pole core 224 and a top 2262 protruding from the middle of the base 2261 toward a direction away from the main pole core 224, and the positioning ring 24 surrounds the top 2262 and abuts against the top 2262, thereby achieving a stable setting of the positioning ring 24.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0072] The above are merely embodiments of the present invention. It should be pointed out that, for those skilled in the art, improvements can be made without departing from the creative concept of the present invention, but these all fall within the protection scope of the present invention.

Claims

1. A multifunctional sound-generating device, comprising a shell having a receiving cavity and a sound-generating unit placed in the receiving cavity, wherein the sound-generating unit comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound in a first direction, wherein the magnetic circuit system comprises a main magnetic steel and a secondary magnetic steel arranged around the main magnetic steel to form a magnetic gap; characterized in that: The vibration system comprises a voice coil inserted in the magnetic gap, and the voice coil vibrates under the action of the main magnetic steel and the auxiliary magnetic steel to realize vibration sound generation of the vibration system; The multifunctional sound-generating device further comprises: An elastic component placed in the receiving cavity and fixedly connected to the shell, a counterweight block connected to the elastic component to be suspended in the receiving cavity, and a driving coil fixed to the counterweight block and vibrating along a second direction together with the counterweight block, the driving coil comprising a first side and a second side arranged opposite to the first side, and in the first direction, the first side is arranged relatively spaced apart from the main magnetic steel, and the second side is arranged relatively spaced apart from the secondary magnetic steel; wherein the second direction is perpendicular to the first direction.

2. The multifunctional sound-generating device according to claim 1, characterized in that: The polarity of one end of the main magnetic steel facing the driving coil is opposite to the polarity of one end of the auxiliary magnetic steel facing the driving coil.

3. The multifunctional sound-generating device according to claim 1, characterized in that: The first side and the second side together enclose a winding hole, and in the first direction, the winding hole and the magnetic gap are arranged opposite to each other.

4. The multifunctional sound-generating device according to claim 1, characterized in that: The counterweight block is formed with a mounting groove, and the driving coil is fixed in the mounting groove; The first side edge and the second side edge together enclose a winding hole, and a groove bottom protrusion of the installation groove forms a positioning portion for alignment and assembly into the winding hole.

5. The multifunctional sound-generating device according to claim 4, characterized in that: The magnetic circuit system also includes a yoke fixedly connecting the main magnetic steel and the auxiliary magnetic steel, the yoke forms an escape space, the first side is relatively spaced from the main magnetic steel via the escape space, and the second side is relatively spaced from the auxiliary magnetic steel via the escape space.

6. The multifunctional sound-generating device according to claim 5, characterized in that: In the first direction, the yoke portion is located in the mounting groove.

7. The multifunctional sound-generating device according to claim 4, characterized in that: The counterweight block includes a main plate portion formed with the mounting groove, and side plates formed by bending and extending from two opposite ends of the main plate portion along a third direction toward the sound-emitting unit; wherein the third direction is perpendicular to the first direction and the second direction; A chamfer is formed on the outer edge of the end surface of the auxiliary magnet facing the driving coil, and the side plate portion includes a first portion located on the peripheral side of the sound-emitting unit and a second portion extending from the main plate portion and opposite to the chamfer to be connected to the first portion.

8. The multifunctional sound-generating device according to any one of claims 2 to 7, characterized in that: The sound-generating unit also includes a basin frame; The vibration system includes an upper diaphragm and a dome, and the upper diaphragm includes a first folding ring portion, a first outer flange extending from the outer edge of the first folding ring portion, and a first inner flange extending from the inner edge of the first folding ring portion; wherein the first outer flange is fixed to the basin frame, the first inner flange is fixed to the dome, and the dome is fixedly connected to the voice coil.

9. The multifunctional sound-generating device according to claim 1, characterized in that: The sound-generating unit also includes a basin frame; The vibration system includes an upper diaphragm, a lower diaphragm arranged opposite to the upper diaphragm along the first direction, and a frame arranged between the upper diaphragm and the lower diaphragm; the frame includes a main body, a first bending portion extending from the inner edge of the main body, and a second bending portion extending from the outer edge of the main body, the voice coil is fixed to the first bending portion; the upper diaphragm includes a first folding ring portion, a first outer flange extending from the outer edge of the first folding ring portion, and a first inner flange extending from the inner edge of the first folding ring portion, the first outer flange is fixed to the basin frame, and the first inner flange is fixed to the main body of the frame; the lower diaphragm includes a second folding ring portion arranged opposite to the first folding ring portion, a second outer flange extending from the outer edge of the second folding ring portion, and a second inner flange extending from the inner edge of the second folding ring portion; the second outer flange is fixed to the end surface of the basin frame away from the first outer flange, and the second inner flange is fixed to the second folding portion; The upper diaphragm also includes a third folding ring portion arranged on the inner side of the first folding ring portion, a third outer flange extending from the outer edge of the third folding ring portion, and a third inner flange extending from the inner edge of the third folding ring portion. The sound unit also includes a positioning ring sleeved on the magnetic circuit system. The magnetic circuit system includes a main pole core attached to the main magnetic steel and an upper magnetic steel attached to the main pole core away from the main magnetic steel. The upper magnetic steel includes a base abutting against the main pole core and a top protruding from the middle of the base toward a direction away from the main pole core. The positioning ring surrounds the top and abuts against the top, wherein the third outer flange is fixed to the main body of the skeleton, and the third inner flange is fixed to the positioning ring.

10. The multifunctional sound-generating device according to claim 9, characterized in that: The vibration system further includes a spherical top arranged on the main body, and the spherical top is located on the inner side of the first inner flange.

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