A multifunctional sound-generating device

Abstract

The present invention provides a multifunctional sound-generating device, comprising a shell and a sound-generating unit, the sound-generating unit comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate along a first direction to generate sound, 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; a receiving cavity has an opening, the multifunctional sound-generating device also comprises a sealing component, an elastic component and a driving coil, the sealing component is connected to the shell to seal the opening, the sealing component comprises a counterweight block and a flexible sealing member connected between the counterweight block and the shell; the elastic component is placed in the receiving cavity, and the elastic component is connected between the shell and the counterweight block; the driving coil is arranged on the counterweight block and vibrates along a second direction together with the counterweight block, the driving coil comprises 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. Therefore, it is necessary to integrate the vibration feedback function and the voice feedback into the same device, but this also means that the number of structural components in the device will increase, which will lead to a significant increase in the thickness of the device. [Summary of the invention]

[0004] The purpose of the present invention is to provide a multifunctional sound-generating device, which not only has vibration feedback function and voice feedback function, but also can reduce the increase in the thickness of the device.

[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 along 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 receiving cavity has an opening, and the multifunctional sound-generating device further comprises:

[0006] A sealing assembly connected to the housing to seal the opening, the sealing assembly comprising a counterweight and a flexible sealing member connected between the counterweight and the housing;

[0007] An elastic component, the elastic component is placed in the receiving cavity, and the elastic component is connected between the shell and the counterweight block;

[0008] A driving coil, wherein the driving coil is arranged on the counterweight block and vibrates along the second direction together with the counterweight block, the driving coil comprises 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.

[0009] 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.

[0010] 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 is directly opposite to the magnetic gap.

[0011] As an embodiment of the present invention, the flexible seal is recessed to form a curved portion, and the curved portion is formed by the flexible seal being recessed toward the accommodating cavity. The flexible seal also includes a first connecting portion extending from an outer edge of the curved portion for connecting to the shell, and a second connecting portion extending from an inner edge of the curved portion for connecting to the counterweight.

[0012] As an embodiment of the present invention, the counterweight block includes a main plate portion for fixing the driving coil, 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;

[0013] In the first direction, the projection of the side plate portion at least partially overlaps with the projection of the curved portion, and the side plate portion is formed with an avoidance gap for avoiding the curved portion; wherein the third direction is perpendicular to both the first direction and the second direction.

[0014] As an embodiment of the present invention, the main board portion is formed with a mounting groove, and the driving coil is fixed in the mounting groove;

[0015] The first side and the second side 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.

[0016] As an embodiment of the present invention, the magnetic circuit system also includes a yoke fixedly connecting the main magnetic steel and the secondary magnetic steel, the yoke forms 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 secondary magnetic steel via the avoidance space.

[0017] As an embodiment of the present invention, a chamfer is formed on the outer edge of the end surface of the secondary 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 board portion and opposite to the chamfer to be connected to the first portion.

[0018] As an embodiment of the present invention, the elastic component includes a first elastic member and a second elastic member, the first elastic member includes a first elastic arm for connecting to the housing and a second elastic arm bent and extended from the first elastic arm for connecting to the counterweight; the second elastic member includes a third elastic arm for connecting to the housing and a fourth elastic arm bent and extended from the third elastic arm for connecting to the counterweight;

[0019] The first elastic arm and the third elastic arm are arranged on both sides of the counterweight block along the third direction, and the second elastic arm and the fourth elastic arm are arranged on both sides of the counterweight block along the second direction; or, the first elastic arm and the third elastic arm are arranged on both sides of the counterweight block along the second direction, and the second elastic arm and the fourth elastic arm are arranged on both sides of the counterweight block along the third direction; wherein the third direction is perpendicular to the second direction and the first direction.

[0020] As an embodiment of the present invention, the sound unit further includes a basin frame;

[0021] 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.

[0022] As an embodiment of the present invention, the sound unit further includes a basin frame;

[0023] 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, 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;

[0024] The second folding ring portion is formed by the lower diaphragm protruding toward the first folding ring portion, the second elastic arm is located on a side of one of the second folding ring portions away from the first folding ring portion, and the fourth elastic arm is located on a side of another of the second folding ring portions away from the first folding ring portion.

[0025] 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.

[0026] As an embodiment of the present invention, the vibration system further includes 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.

[0027] The beneficial effects of the present invention are as follows: the flexible seal is connected between the counterweight and the shell, so that on the one hand the combination of the counterweight and the flexible seal can act as a cover to seal the opening of the shell, thereby eliminating the cover and reducing the thickness of the device, and on the other hand the flexible physical properties of the flexible seal ensure that the counterweight can reciprocate relative to the shell to form vibration; and the counterweight is stably arranged relative to the shell through the connection of the elastic component, and then the drive coil is fixed on the counterweight, and the first side edge of the drive coil is arranged relative to the main magnet along the first direction (the vibration direction of the vibration system), and the second side edge of the drive coil is arranged relative to the secondary magnet along the first direction, so that the counterweight will vibrate along the second direction perpendicular to the first direction with the drive coil under the interaction of the main magnet, the secondary magnet and the drive coil, that is, the entire drive coil and the counterweight are used as a mover, and the sound-generating unit with the main magnet and the secondary magnet is used as a stator, and the drive coil drives the counterweight to vibrate through the interaction force between the drive coil and the main magnet and the secondary magnet, thereby realizing vibration feedback of the device. The counterweight block in the present technical solution not only acts as a mover to realize the vibration of the shell, but also acts as a cover to seal the shell opening, so that the device not only has vibration feedback function and voice feedback function, but also can reduce the increase in the thickness of the device.

Brief Description of the Drawings

[0028] Figure 1 A schematic diagram of the overall structure of a multifunctional sound-generating device provided for one embodiment of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0030] Figure 3 It is a partial structural schematic diagram of a multifunctional sound-generating device of the present invention;

[0031] Figure 4 for Figure 3 Schematic diagram of the decomposition structure;

[0032] Figure 5It is a schematic diagram of a partially exploded structure of a multifunctional sound-generating device;

[0033] Figure 6 for Figure 1 Sectional view along the A-A direction;

[0034] Figure 7 for Figure 1 Cross-sectional view along the B-B direction;

[0035] Figure 8 A cross-sectional view of a multifunctional sound-generating device provided for another embodiment of the present invention;

[0036] Fig. 9 A cross-sectional view of a multifunctional sound-generating device provided for another embodiment of the present invention;

[0037] Fig.10 for Figure 6 A partial enlarged view of point C in the middle;

[0038] Fig.11 for Figure 7 A partial enlarged view of point D in the middle.

[0039] In the figure:

[0040] 100, multifunctional sound-generating device; 10, housing; 10a, receiving cavity; 10a1, front cavity; 10a2, rear cavity; 10b, sound outlet; 10c, opening; 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 edge; 213, skeleton; 2131, main body; 2132, first bending portion; 2133, second bending portion; 214, dome; 215, lower diaphragm; 2151, second folding ring portion; 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; 223, 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, sealing assembly; 31, counterweight; 311, main board; 3111, mounting groove; 3112, positioning part; 312, side plate; 312a, avoidance gap; 3121, first part; 3 121a, step; 3122, second part; 32, flexible sealing member; 321, bending portion; 322, first connecting portion; 323, second connecting portion; 40, elastic component; 41, first elastic member; 411, first elastic arm; 412, second elastic arm; 42, second elastic member; 421, third elastic arm; 422, fourth elastic arm; 50, drive coil; 50a, winding hole; 51, first side; 52, second side. [Specific implementation method]

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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 11 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 10a1 and a rear cavity 10a2. The shell 10 is provided with a sound outlet 10b connected to the front cavity 10a1 to achieve sound output; the rear cavity 10a2 can be filled with sound-absorbing powder to improve the low-frequency acoustic performance of the device.

[0045] Among them, combined Figure 1 and Figure 6 The sound-emitting unit 20 includes a vibration system 21 and a magnetic circuit system 22 for driving the vibration system 21 to vibrate along a first direction to generate sound. The magnetic circuit system 22 includes a main magnet 221 and an auxiliary magnet 222 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 vibration system 21, thereby realizing the voice feedback prompt of the device.

[0046] See also Figure 2-Figure 4 , Figure 6-Figure 11 In order to realize the vibration feedback function of the device and reduce the increase in the thickness of the device, the receiving cavity 10a has an opening 10c, and the device also includes a sealing component 30, an elastic component 40 and a driving coil 50; the sealing component 30 is connected to the shell 10 to seal the opening 10c, and the sealing component 30 includes a counterweight block 31 and a flexible sealing member 32 connected between the counterweight block 31 and the shell 10; the elastic component 40 is placed in the receiving cavity 10a, and the elastic component 40 is connected between the shell 10 and the counterweight block 31; the driving coil 50 is arranged on the counterweight block 31 and vibrates along the second direction together with the counterweight block 31, and 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.

[0047] like Figure 1 , Figure 3 , Figure 6 as well as Figure 7 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 31, the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first direction and the second direction.

[0048] In the present invention, the flexible seal 32 is connected between the counterweight 31 and the shell 10. On the one hand, the combination of the counterweight 31 and the flexible seal 32 can serve as a cover to seal the opening 10c of the shell 10. The cover is omitted and the thickness of the device can be reduced. On the other hand, the flexible physical properties of the flexible seal 32 are used to ensure that the counterweight 31 can reciprocate relative to the shell 10 to form vibration; and the counterweight 31 is stably arranged relative to the shell 10 through the connection of the elastic component 40, and then the drive coil 50 is fixed on the counterweight 31, and the first side 51 of the drive coil 50 is aligned with the main body 10 along the first direction (the vibration direction of the vibration system 21). The magnetic steel 221 is arranged at a relative interval, and the second side 52 of the driving coil 50 is arranged at a relative interval with the secondary magnetic steel 222 along the first direction, so that the counterweight block 31 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 secondary magnetic steel 222 and the driving coil 50, that is, the entire driving coil 50 and the counterweight block 31 are used as a mover, and the sound-generating unit 20 with the main magnetic steel 221 and the secondary magnetic steel 222 is used as a stator. The driving coil 50 drives the counterweight block 31 to vibrate through the interaction force between the driving coil 50 and the main magnetic steel 221 and the secondary magnetic steel 222, thereby realizing the vibration feedback of the device. The counterweight block 31 in the present technical solution not only acts as a mover to realize the vibration of the shell 10, but also acts as a cover to seal the opening 10c of the shell 10, so that the device not only has both vibration feedback function and voice feedback function, but also can reduce the increase in the thickness of the device.

[0049] 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.

[0050] 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.

[0051] The driving coil 50 may be one or more. Figure 3 and Figure 6As shown, there are two driving coils 50, and the two driving coils 50 are arranged along the second direction and fixed on the counterweight 31. 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.

[0052] In one embodiment, see Figure 2-Figure 4 The 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 connected to the shell 10 and a second elastic arm 412 bent and extended from the first elastic arm 411 for connecting to the counterweight 31. The second elastic member 42 includes a third elastic arm 421 connected to the shell 10 and a fourth elastic arm 422 bent and extended from the third elastic arm 421 for connecting to the counterweight 31.

[0053] In some specific embodiments, the first elastic arm 411 and the third elastic arm 421 are arranged on both sides of the counterweight block 31 along the third direction, and the second elastic arm 412 and the fourth elastic arm 422 are arranged on both sides of the counterweight block 31 along the second direction; or, the first elastic arm 411 and the third elastic arm 421 are arranged on both sides of the counterweight block 31 along the second direction, and the second elastic arm 412 and the fourth elastic arm 422 are arranged on both sides of the counterweight block 31 along the third direction; thereby achieving stable support of the counterweight block 31 by the elastic component 40.

[0054] 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 31 via an adhesive adhesive.

[0055] 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 31 via an adhesive adhesive.

[0056] The structure of the sound-emitting unit 20 is described below by way of example:

[0057] In one embodiment, see Fig. 9 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.

[0058] In another embodiment, see Figure 8 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 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.

[0059] 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.

[0060] See also Figure 8 , 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 being concave 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 second elastic arm 412 can be located on the side of one of the folding ring portions away from the first folding ring portion 2121, and the fourth elastic arm 422 is located on the side of the other second folding ring portion 2151 away from the first folding ring portion 2121. In this way, the second elastic arm 412 and the fourth elastic arm 422 are moved away from the inner wall of the housing 10, and the distance between the second elastic arm 412 and the housing 10 and the distance between the fourth elastic arm 422 and the housing 10 are increased, thereby increasing the space of the rear cavity 10a2, which can be used to fill the sound-absorbing powder and improve the acoustic performance of the device.

[0061] 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.

[0062] In another embodiment, see Figure 4 as well as Figure 6 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.

[0063] See also Figure 6, 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 being concave 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 second elastic arm 412 is located on the side of one of the second folding ring portions 2151 away from the first folding ring portion 2121, and the fourth elastic arm 422 is located on the side of the other second folding ring portion 2151 away from the first folding ring portion 2121. In this way, the second elastic arm 412 and the fourth elastic arm 422 are moved away from the inner wall of the housing 10, and the distance between the second elastic arm 412 and the housing 10 and the distance between the fourth elastic arm 422 and the housing 10 are increased, thereby increasing the space of the rear cavity 10a2, which can be used to fill the sound-absorbing powder and improve the acoustic performance of the device.

[0064] 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 .

[0065] See also Figure 3 , Figure 4 , Figure 6 as well as Figure 7 In one embodiment, the flexible seal 32 is recessed to form a curved portion 321. Therefore, when the counterweight 31 vibrates along the second direction, the flexible seal 32 is more likely to be deformed by the push and pull of the counterweight 31, so that the counterweight 31 is more likely to vibrate.

[0066] In some specific embodiments, the curved portion 321 is annular, and the annular curved portion 321 is disposed around the counterweight 31 .

[0067] In some specific embodiments, the bent portion 321 is formed by the flexible sealing member 32 being recessed toward the receiving cavity 10a, that is, the bent portion 321 is retracted into the receiving cavity 10a to prevent the bent portion 321 from protruding from the housing 10 and causing an increase in the volume of the device.

[0068] In one embodiment, the flexible seal 32 further includes a first connection portion 322 extending from the outer edge of the bent portion 321 for connecting to the housing 10, and a second connection portion 323 extending from the inner edge of the bent portion 321 for connecting to the counterweight 31. The first connection portion 322 is used to achieve a stable connection between the flexible seal 32 and the housing 10, and the second connection portion 323 is used to achieve a stable connection between the flexible seal 32 and the counterweight 31.

[0069] In one embodiment, in combination Fig.11The counterweight 31 includes a main plate portion 311 for fixing the driving coil 50 , and side plate portions 312 formed by bending and extending from two ends of the main plate portion 311 that are oppositely arranged along the third direction in a direction toward the sound-emitting unit 20 . Since the counterweight 31 vibrates along the second direction, the space formed by the counterweight 31 and the shell 10 in the second direction is used for vibration; in order to increase the weight of the counterweight 31 to improve the vibration effect of the device, the counterweight 31 not only includes a main board portion 311 for fixing the drive coil 50, but also includes two side plate portions 312, and the two side plate portions 312 are formed by bending and extending the two ends of the main board portion 311 along the third direction, and the side plate portions 312 are extended in the direction toward the sound-emitting unit 20, that is, the side plate portions 312 are accommodated by means of the space formed by the counterweight 31 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 31; on the other hand, the assembly of the counterweight 31 relative to the sound-emitting unit 20 can be guided by the two side plate portions 312, thereby improving the assembly speed and quality.

[0070] In addition, in the first direction, the projection of the side plate portion 312 at least partially overlaps with the projection of the curved portion 321, and the side plate portion 312 is formed with an escape notch 312a for evading the curved portion 321. The position of the side plate portion 312 relative to the curved portion 321 is set to maximize the use of the space in the receiving cavity 10a to increase the volume of the side plate portion 312, that is, to increase the weight of the counterweight 31; at the same time, the side plate portion 312 is formed with an escape notch 312a for evading the curved portion 321 to ensure that the curved portion 321 can be recessed into the receiving cavity 10a, and also achieve close cooperation between the side plate portion 312 and the curved portion 321, and fully utilize the space of the receiving cavity 10a.

[0071] In some specific embodiments, continue to combine Fig.11 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 312 includes a first portion 3121 located on the peripheral side of the sound-emitting unit 20 and a second portion 3122 extending from the main plate portion 311 and connected to the first portion 3121 relative to the chamfered opening 2221. By providing the chamfered opening 2221 on the secondary magnetic steel 222, the second portion 3122 can be arranged relative to the chamfered opening 2221 to increase the thickness of the second portion 3122, which, on the one hand, strengthens the connection between the first portion 3121 and the main plate portion 311, and on the other hand, increases the weight of the counterweight block 31.

[0072] In some specific embodiments, see Figure 3 and Figure 4The main board portion 311 is formed with a mounting groove 3111, and the driving coil 50 is fixed in the mounting groove 3111. The mounting groove 3111 not only realizes the mounting of the driving coil 50 relative to the counterweight 31, but also partially overlaps the thickness of the driving coil 50 with the thickness of the counterweight 31, thereby reducing the thickness of the device and facilitating the development of thinness and lightness.

[0073] Furthermore, the groove bottom protrusion of the installation groove 3111 forms a positioning portion 3112 for aligning and assembling into the winding hole 50a. The positioning portion 3112 is used to realize the rapid positioning and installation of the driving coil 50.

[0074] 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.

[0075] In some specific embodiments, see Figure 6 and Figure 7 In the first direction, the yoke 223 is partially located in the mounting groove 3111. While ensuring that the yoke 223 avoids the drive coil 50, the yoke 223 is partially accommodated in the mounting groove 3111 of the counterweight 31. Therefore, the drive coil 50 is also partially located in the avoidance space 2231 of the yoke 223. The thickness of the counterweight 31, 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 31, that is, it is conducive to reducing the thickness of the device.

[0076] In some specific embodiments, the yoke 223 is located between the two driving coils 50 , the middle of the yoke 223 is fixedly connected to the main magnet 221 , and both ends of the yoke 223 are fixedly connected to the auxiliary magnet 222 .

[0077] See also Figure 2 , Figure 6 as well as Figure 7 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 .

[0078] In some specific embodiments, see Fig.11 The first part 3121 is formed with a step 3121a, and the step 3121a makes way for the secondary pole core 225, so that the driving coil 50 fixed on the counterweight block 31 maintains a certain distance from the main magnet 221 and the secondary magnet 222, avoiding the hardness of the elastic component 40 and the flexible seal 32 being unable to keep the driving coil 50 and the main magnet 221 and the secondary magnet 222 at a certain distance.

[0079] In addition, see Figure 6 as well as Figure 7 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 .

[0080] 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 base 2261, thereby achieving a stable setting of the positioning ring 24.

[0081] 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.

[0082] 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 divides the receiving cavity into a front cavity and a rear cavity, the shell is provided with a sound outlet hole connected to the front cavity, the sound-generating unit comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate along a first direction to generate sound, 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 receiving cavity has an opening, and the multifunctional sound-generating device further comprises: A sealing assembly connected to the housing to seal the opening, the sealing assembly comprising a counterweight and a flexible sealing member connected between the counterweight and the housing; An elastic component, the elastic component is placed in the receiving cavity, and the elastic component is connected between the shell and the counterweight block; A driving coil, wherein the driving coil is arranged on the counterweight block and vibrates along the second direction together with the counterweight block, the driving coil comprises 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 is directly opposite to the magnetic gap.

4. The multifunctional sound-generating device according to claim 1, characterized in that: The flexible seal is recessed to form a curved portion, which is formed by the flexible seal being recessed toward the accommodating cavity. The flexible seal also includes a first connecting portion extending from an outer edge of the curved portion for connecting to the shell, and a second connecting portion extending from an inner edge of the curved portion for connecting to the counterweight.

5. The multifunctional sound-generating device according to claim 4, characterized in that: The counterweight block includes a main plate portion for fixing the driving coil, 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; In the first direction, the projection of the side plate portion at least partially overlaps with the projection of the curved portion, and the side plate portion is formed with an avoidance gap for avoiding the curved portion; wherein the third direction is perpendicular to both the first direction and the second direction.

6. The multifunctional sound-generating device according to claim 5, characterized in that: The main board portion is formed with a mounting groove, and the driving coil is fixed in the mounting groove; The first side and the second side 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.

7. The multifunctional sound-generating device according to claim 6, 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.

8. The multifunctional sound-generating device according to claim 5, characterized in that: 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.

9. The multifunctional sound-generating device according to claim 1, characterized in that: The elastic component includes a first elastic member and a second elastic member, the first elastic member includes a first elastic arm for connecting to the housing and a second elastic arm bent and extended from the first elastic arm for connecting to the counterweight; the second elastic member includes a third elastic arm for connecting to the housing and a fourth elastic arm bent and extended from the third elastic arm for connecting to the counterweight; The first elastic arm and the third elastic arm are arranged on both sides of the counterweight block along the third direction, and the second elastic arm and the fourth elastic arm are arranged on both sides of the counterweight block along the second direction; or, the first elastic arm and the third elastic arm are arranged on both sides of the counterweight block along the second direction, and the second elastic arm and the fourth elastic arm are arranged on both sides of the counterweight block along the third direction; wherein the third direction is perpendicular to the second direction and the first direction.

10. 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 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.

11. The multifunctional sound-generating device according to claim 9, characterized in that: The sound-generating unit also includes a basin frame; 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, 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 second folding ring portion is formed by the lower diaphragm protruding toward the first folding ring portion, the second elastic arm is located on a side of one of the second folding ring portions away from the first folding ring portion, and the fourth elastic arm is located on a side of another of the second folding ring portions away from the first folding ring portion.

12. The multifunctional sound-generating device according to claim 11, characterized in that: 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 sleeved 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.

13. The multifunctional sound-generating device according to claim 11, characterized in that: The vibration system further includes 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.

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