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 for driving the vibration system to vibrate 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 vibration system comprising a sound membrane and a voice coil inserted in the magnetic gap to drive the sound membrane to vibrate and produce sound; the multifunctional sound-generating device also comprises an elastic component fixed to the shell and suspending the sound-generating unit in the receiving cavity, and a driving coil fixed to the inner wall of the shell and used to drive the sound-generating unit to vibrate along a second direction, the driving coil comprising a first side and a second side arranged opposite to the first side, in the first direction, the first side is arranged opposite to the main magnetic steel, the second side is arranged opposite to the secondary magnetic steel, and the second direction is perpendicular to the first direction; the sound membrane extends to form a partition connected to the inner wall of the shell to divide the receiving cavity into a front cavity and a rear cavity.

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 it also means that the structural components in the device will increase, which will lead to cumbersome production and assembly processes. [Summary of the invention]

[0004] The object 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 reduces production process and assembly process.

[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, wherein the vibration system comprises a sound membrane and a voice coil inserted in the magnetic gap and driving the sound membrane to vibrate and generate sound; the multifunctional sound-generating device further comprises:

[0006] an elastic component fixed to the shell and suspending the sound-emitting unit in the receiving cavity, and a driving coil fixed to the inner wall of the shell and used to drive the sound-emitting unit to vibrate along a second direction, wherein 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; wherein the second direction is perpendicular to the first direction;

[0007] The sound membrane extends to form a partition connected to the inner wall of the shell, and the partition divides the receiving cavity into a front cavity and a rear cavity.

[0008] 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.

[0009] 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 arranged opposite to the magnetic gap.

[0010] As an embodiment of the present invention, the sound unit includes a basin frame for supporting the sound membrane, the sound membrane includes a first folding ring portion and a first outer flange extending from the outer edge of the first folding ring portion, and the first outer flange is fixed on the basin frame, and the separator is extended from the first outer flange in a direction away from the basin frame.

[0011] As an embodiment of the present invention, the separator includes a bent portion, a first connecting portion formed by bending and extending from the inner edge of the bent portion, and a second connecting portion formed by bending and extending from the outer edge of the bent portion, wherein the first connecting portion is connected to the first outer flange and is fitly connected to the outer peripheral wall of the basin frame, and the second connecting portion is fixed to the shell.

[0012] As an embodiment of the present invention, the shell includes a bottom wall and a top wall arranged opposite to each other along the first direction, and a peripheral wall connected between the bottom wall and the top wall, and the second connecting portion is connected to the peripheral wall.

[0013] As an embodiment of the present invention, the bent portion is formed to be recessed toward the rear cavity.

[0014] As an embodiment of the present invention, the vibration system also includes a diaphragm arranged opposite to the sound membrane along the first direction and a skeleton arranged between the sound membrane and the diaphragm, the skeleton 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 sound membrane also includes a first inner flange extending from the inner edge of the first folding ring portion, the first inner flange is fixed on the main body of the skeleton, and the diaphragm includes a second folding ring portion arranged opposite to the first folding ring portion, and a second folding ring portion extending from the outer edge of the second folding ring portion. The second outer flange is fixed to the end face of the basin frame away from the first outer flange, and the second inner flange is fixed to the second bending portion. The sound membrane 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 mounted on the magnetic circuit system, 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.

[0015] 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 a avoidance opening, the first side edge is arranged relative to the main magnetic steel through the avoidance opening, and the second side edge is arranged relative to the auxiliary magnetic steel through the avoidance opening.

[0016] As an embodiment of the present invention, in the first direction, at least a portion of the drive coil is located in the avoidance opening.

[0017] As an embodiment of the present invention, the magnetic yoke includes a first magnetic yoke and a second magnetic yoke which are relatively spaced apart to form the avoidance opening, and part of the first magnetic yoke is fixedly connected to the main magnetic steel, and part of the first magnetic yoke is fixedly connected to the secondary magnetic steel; part of the second magnetic yoke is fixedly connected to the main magnetic steel, and part of the second magnetic yoke is fixedly connected to the secondary magnetic steel.

[0018] As an embodiment of the present invention, the magnetic circuit system further includes a main pole core attached to the main magnetic steel and an auxiliary pole core surrounding the main pole core and attached to the auxiliary magnetic steel;

[0019] The secondary pole core includes a first fixing portion attached to the secondary magnetic steel and a second fixing portion bent and extended from the first fixing portion and located at a peripheral side of the secondary magnetic steel, wherein the elastic component is fixedly connected to the second fixing portion.

[0020] 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 connected to the shell and a second elastic arm bent and extended from the first elastic arm for connecting to the sound-emitting unit, the second elastic member includes a third elastic arm connected to the shell and a fourth elastic arm bent and extended from the third elastic arm for connecting to the sound-emitting unit;

[0021] In the second direction, the first elastic arm and the third elastic arm are respectively arranged on both sides of the sound unit, and in the third direction, the second elastic arm and the fourth elastic arm are respectively arranged on both sides of the sound unit; or, in the second direction, the second elastic arm and the fourth elastic arm are respectively arranged on both sides of the sound unit, and in the third direction, the first elastic arm and the third elastic arm are respectively arranged on both sides of the sound unit; wherein the third direction is perpendicular to both the first direction and the second direction.

[0022] As an embodiment of the present invention,

[0023] The beneficial effects of the present invention are as follows: in the present invention, the sound-emitting unit is suspended in the receiving cavity by an elastic component, so that the sound-emitting unit can move relative to the shell; then the driving coil is fixed on the inner wall of the shell, and the first side edge of the driving coil is arranged relatively spaced apart from the main magnet along the first direction (the vibration direction of the vibration system), and the second side edge is arranged relatively spaced apart from the auxiliary magnet along the first direction, so that the sound-emitting unit as a whole will vibrate along the second direction perpendicular to the first direction under the interaction of the main magnet, the auxiliary magnet and the driving coil, that is, the entire sound-emitting unit is used as a mover, and the driving coil is used as a stator, and the sound-emitting unit is driven to vibrate through the interaction force between the driving coil and the main magnet and the auxiliary magnet to realize the vibration feedback of the device; at the same time, with the help of the flexible physical properties of the sound membrane, the sound membrane is extended to form a partition connected to the inner wall of the shell, so that the receiving cavity can be divided into a front cavity and a rear cavity to ensure the sound performance. In addition, the partition also has the flexible physical properties of the sound membrane, which ensures that the sound-emitting unit can move back and forth in the receiving cavity to form vibration. In the present technical solution, a separator is formed by extending the sound membrane of the sound unit. After the sound unit is assembled into the receiving cavity through the elastic component, the receiving cavity can be separated (into a front cavity and a rear cavity) and the vibration of the sound unit can be ensured. That is, the device in the present technical solution not only has both vibration feedback function and voice feedback function, but also reduces the production process and assembly process.

Brief Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of a multifunctional sound-generating device of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0026] Figure 3 It is a schematic diagram of a partially exploded structure of a multifunctional sound-generating device;

[0027] Figure 4 It is a schematic diagram of the partial structure of the sound membrane;

[0028] Figure 5 is a schematic diagram of the structure of the driving coil;

[0029] Figure 6 for Figure 1 Bottom view after removing the bottom wall;

[0030] Figure 7 for Figure 1 Sectional view in the AA direction;

[0031] Figure 8 for Figure 7 A partial enlarged view of point C in the middle.

[0032] In the figure:

[0033] 100, multifunctional sound-generating device; 10, housing; 10a, receiving cavity; 10a1, front cavity; 10a2, rear cavity; 10b, sound outlet; 11, bottom wall; 12, top wall; 13, peripheral wall; 20, sound-generating unit; 21, vibration system; 211, voice coil; 212, sound membrane; 2121, separator; 2121a, bending portion; 2121b, first connecting portion; 2121c, second connecting portion; 2 122, first folding ring; 2123, first outer flange; 2124, first inner flange; 2125, third folding ring; 2126, third outer flange; 2127, third inner flange; 213, diaphragm; 2131, second folding ring; 2132, second outer flange; 2133, second inner flange; 214, dome; 215, frame; 2151, main body; 2152, first bending portion; 215 3. Second bending portion; 22. Magnetic circuit system; 22a. Magnetic gap; 221. Main magnetic steel; 222. Auxiliary magnetic steel; 223. Magnetic yoke; 223a. Avoidance; 2231. First magnetic yoke; 2232. Second magnetic yoke; 224. Main pole core; 225. Auxiliary pole core; 2251. First fixing portion; 2252. Second fixing portion; 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, elastic component; 31, first elastic member; 311, first elastic arm; 312, second elastic arm; 32, second elastic member; 321, third elastic arm; 322, fourth elastic arm; 40, driving coil; 40a, winding hole; 41, first side edge; 42, second side edge. [Specific implementation method]

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 8 The multifunctional sound-generating device 100 includes a housing 10 having a receiving cavity 10a and a sound-generating unit 20 received in the receiving cavity 10a. The housing 10 includes a bottom wall 11 and a top wall 12 arranged opposite to each other along a first direction, and a peripheral wall 13 connected between the bottom wall 11 and the top wall 12. The peripheral wall 13, the bottom wall 11 and the top wall 12 together form the receiving cavity 10a. The sound-generating unit 20 includes a vibration system 21 and a magnetic circuit system 22 for driving the vibration system 21 to vibrate and generate sound along a first direction. The magnetic circuit system 22 includes a main magnetic steel 221 and a secondary magnetic steel 222 arranged around the main magnetic steel 221 to form a magnetic gap 22a. The vibration system 21 includes a sound film 212 and a voice coil 211 inserted in the magnetic gap 22a to drive the sound film 212 to vibrate and generate sound. The voice coil 211 drives the sound film 212 to vibrate and generate sound under the action of the main magnetic steel 221 and the secondary magnetic steel 222, thereby realizing the voice feedback prompt of the device.

[0038] See also Figure 2 , Figure 6 as well as Figure 7 In order to realize the vibration feedback function of the device, the device also includes an elastic component 30 and a driving coil 40. The elastic component 30 is fixed on the shell 10 and suspends the sound unit 20 in the receiving cavity 10a. The driving coil 40 is fixed on the inner wall of the shell 10 to drive the sound unit 20 to vibrate along the second direction. The driving coil 40 includes a first side 41 and a second side 42 arranged opposite to the first side 41, and in the first direction, the first side 41 is arranged opposite to the main magnetic steel 221, and the second side 42 is arranged opposite to the auxiliary magnetic steel 222; wherein the second direction is perpendicular to the first direction; the sound membrane 212 extends to form a partition 2121 connected to the inner wall of the shell 10, and the partition 2121 is used to divide the receiving cavity 10a into a front cavity 10a1 and a rear cavity 10a2.

[0039] Among them, see Figure 1 and Figure 7 The shell 10 is provided with a sound outlet 10b connected to the front cavity 10a1 to achieve sound emission; the rear cavity 10a2 can be filled with sound-absorbing powder to improve the low-frequency acoustic performance of the sound-generating device.

[0040] like Figure 1 , Figure 6 as well as Figure 7 As shown, the Z direction is defined as the first direction, the X direction is defined as the second direction, and the Y direction is defined as the third direction. The first direction is the vibration direction of the vibration system 21, the second direction is the vibration direction of the sound unit 20, the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first direction and the second direction.

[0041] In the present invention, the sound-generating monomer 20 is suspended in the accommodating cavity 10a by the elastic component 30, so that the sound-generating monomer 20 can move relative to the shell 10; then the driving coil 40 is fixed on the inner wall of the shell 10, and the first side 41 of the driving coil 40 is arranged relatively spaced apart from the main magnetic steel 221 along the first direction (the vibration direction of the vibration system 21), and the second side 42 is arranged relatively spaced apart from the auxiliary magnetic steel 222 along the first direction, so that the sound-generating monomer 20 as a whole will vibrate along the second direction perpendicular to the first direction under the interaction of the main magnetic steel 221, the auxiliary magnetic steel 222 and the driving coil 40, that is, the entire sound-generating monomer 2 0 as a mover, the driving coil 40 as a stator, and the interaction force between the driving coil 40 and the main magnet 221 and the auxiliary magnet 222 is used to drive the sound unit 20 to vibrate to achieve vibration feedback of the device; at the same time, with the help of the flexible physical properties of the sound membrane 212, the sound membrane 212 is extended to form a separator 2121 connected to the inner wall of the shell 10, so that the receiving cavity 10a can be divided into a front cavity 10a1 and a rear cavity 10a2 to ensure the sound performance. In addition, the separator 2121 also has the flexible physical properties of the sound membrane 212, ensuring that the sound unit 20 can move back and forth in the receiving cavity 10a to form vibration. In the present technical solution, the sound membrane 212 of the sound unit 20 is extended to form a separator 2121. After the sound unit 20 is assembled into the receiving cavity 10a through the elastic component 30, the receiving cavity 10a can be separated (divided into a front cavity 10a1 and a rear cavity 10a2) and the vibration of the sound unit 20 can be ensured. That is, the device in the present technical solution not only has both vibration feedback function and voice feedback function, but also reduces the production process and assembly process.

[0042] It should be noted that the polarity of the end of the main magnetic steel 221 facing the driving coil 40 is opposite to the polarity of the end of the auxiliary magnetic steel 222 facing the driving coil 40 , so that the sound unit 20 can vibrate.

[0043] In some specific embodiments, see Figure 5 and Figure 6 The first side 41 and the second side 42 together enclose a winding hole 40a. In the first direction, the winding hole 40a is arranged opposite to the magnetic gap 22a, optimizing the relative position between the driving coil 40 and the main magnetic steel 221 and the auxiliary magnetic steel 222 to increase the relative force between the driving coil 40 and the main magnetic steel 221 and the auxiliary magnetic steel 222, thereby ensuring the driving of the sound unit 20.

[0044] The driving coil 40 may be one or more. Figure 6As shown, there are two driving coils 40, and the two driving coils 40 are arranged along the second direction and fixed on the inner wall of the shell 10. By increasing the number of driving coils 40 in a limited space, the relative area between the driving coil 40 and the main magnet 221, and the relative area between the driving coil 40 and the secondary magnet 222 can be increased, thereby increasing the interaction force between the driving coil 40 and the main magnet 221, and the secondary magnet 222.

[0045] In one embodiment, see Figure 2 and Figure 6 The elastic component 30 includes a first elastic member 31 and a second elastic member 32. The first elastic member 31 includes a first elastic arm 311 connected to the shell 10 and a second elastic arm 312 bent and extended from the first elastic arm 311 for connecting to the sound-emitting unit 20. The second elastic member 32 includes a third elastic arm 321 connected to the shell 10 and a fourth elastic arm 322 bent and extended from the third elastic arm 321 for connecting to the sound-emitting unit 20.

[0046] In some specific embodiments, in the second direction, the first elastic arm 311 and the third elastic arm 321 are respectively arranged on both sides of the sound-emitting monomer 20, and in the third direction, the second elastic arm 312 and the fourth elastic arm 322 are respectively arranged on both sides of the sound-emitting monomer 20; or, in the second direction, the second elastic arm 312 and the fourth elastic arm 322 are respectively arranged on both sides of the sound-emitting monomer 20, and in the third direction, the first elastic arm 311 and the third elastic arm 321 are respectively arranged on both sides of the sound-emitting monomer 20, see for details. Figure 6 ; Thereby ensuring that the elastic component 30 can stably suspend the sound unit 20 in the receiving cavity 10a.

[0047] In some specific embodiments, the first elastic arm 311 may be connected to the housing 10 via an adhesive adhesive, and the second elastic arm 312 may be connected to the sound unit 20 via an adhesive adhesive.

[0048] In some specific embodiments, the third elastic arm 321 may be connected to the housing 10 via an adhesive adhesive, and the fourth elastic arm 322 may be connected to the sound unit 20 via an adhesive adhesive.

[0049] In one embodiment, see Figure 8The sound-emitting unit 20 further includes a basin frame 23 for supporting the sound film 212. The sound film includes a first folding ring portion 2122 and a first outer flange 2123 formed by bending and extending from the outer edge of the first folding ring portion 2122. The first outer flange 2123 is fixed on the basin frame 23, and the separator 2121 is formed by extending from the first outer flange 2123 in a direction away from the basin frame 23. By fixing the first outer flange 2123 on the basin frame 23, on the one hand, the basin frame 23 supports the sound film 212, and on the other hand, the force transmission between the separator 2121 and the first folding ring portion 2122 is cut off, so that the separator 2121 vibrates independently in the second direction relative to the first folding ring portion 2122, and the first folding ring portion 2122 vibrates independently in the first direction relative to the separator 2121.

[0050] See also Figure 8 The separator 2121 includes a bent portion 2121a, a first connecting portion 2121b formed by bending and extending from the inner edge of the bent portion 2121a, and a second connecting portion 2121c formed by bending and extending from the outer edge of the bent portion 2121a, wherein the first outer flange 2123 of the first connecting portion 2121b is connected and fits the outer peripheral wall 13 of the basin frame 23, on the one hand, it strengthens the connection between the sound membrane 212 and the basin frame 23, and on the other hand, it further isolates the force conduction between the separator 2121 and the first folding ring portion 2122; the second connecting portion 2121c is fixed to the shell 10, and the stable connection between the separator 2121 and the inner wall of the shell 10 is ensured by the second connecting portion 2121c; a bent portion is set between the first connecting portion 2121b and the second connecting portion 2121c, when the driving coil 40 drives the sound unit 20 to vibrate along the second direction, the separator 2121 is more easily deformed by the push and pull of the sound unit 20, thereby making the sound unit 20 more likely to vibrate.

[0051] In some specific embodiments, the curved portion 2121 a is ring-shaped, and the ring-shaped curved portion 2121 a surrounds the sound-emitting unit 20 .

[0052] In some specific embodiments, the curved portion 2121a is formed to be recessed toward the rear cavity 10a2, thereby increasing the space of the front cavity 10a1 and improving the acoustic performance.

[0053] In some specific embodiments, see Figure 4 , Figure 7 and Figure 8 The second connecting portion 2121c is connected to the peripheral wall 13, that is, in the first direction, the receiving chamber 10a is divided into the front chamber 10a1 and the rear chamber 10a2 by the partition body 2121.

[0054] See also Figure 2 , Figure 3 , Figure 7 as well as Figure 8, the structure of the vibration system 21 is illustrated below:

[0055] The vibration system 21 also includes a diaphragm 213 arranged opposite to the sound membrane 212 along the first direction and a skeleton 215 arranged between the sound membrane 212 and the diaphragm 213, the skeleton 215 includes a main body 2151, a first bending portion 2152 extending from the inner edge of the main body 2151, and a second bending portion 2153 extending from the outer edge of the main body 2151, the voice coil 211 is fixed to the first bending portion 2152, the sound membrane 212 also includes a first inner flange 2124 extending from the inner edge of the first folding ring portion 2122, the first inner flange 2124 is fixed on the main body 2151 of the skeleton 215, the diaphragm 213 includes a second folding ring portion 2131 arranged opposite to the first folding ring portion 2122, and a second folding ring portion 2131 extending from the outer edge of the second folding ring portion 2131. Two outer flanges 2132 and a second inner flange 2133 extending from the inner edge of the second folding ring portion 2131, the second outer flange 2133 is fixed on the end face of the basin frame 23 away from the first outer flange 2123, the second inner flange 2133 is fixed to the second bending portion 2153, the sound membrane 212 also includes a third folding ring portion 2125 arranged on the inner side of the first folding ring portion 2122, a third outer flange 2126 extending from the outer edge of the third folding ring portion 2125 and a third inner flange 2127 extending from the inner edge of the third folding ring portion 2125, the sound unit 20 also includes a positioning ring 24 mounted on the magnetic circuit system 22, wherein the third outer flange 2126 is fixed on the main body 2151 of the skeleton 215, and the third inner flange 2127 is fixed on the positioning ring 24.

[0056] The vibration system 21 also includes a dome 214, which is fixed on the main body 2151 of the frame 215 and is located between the first inner flange 2124 and the third outer flange 2126. The dome 214 can strengthen the strength of the frame 215, improve the torsion resistance and swing resistance of the frame 215, and improve the acoustic performance of the sound unit 20.

[0057] In addition, referring to the figure, 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 clamped between the basin frame 23 and the second outer flange 2132, a second fixed arm 252 clamped between the frame 215 and the second inner flange 2133, and an elastic arm 253 connected between the first fixed arm 251 and the second fixed arm 252.

[0058] See also Figure 2 , Figure 6 and Figure 7 , the structure of the magnetic circuit system 22 is specifically described below:

[0059] 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 is formed with an avoidance opening 223a. The first side 41 is arranged relative to the main magnetic steel 221 through the avoidance opening 223a, and the second side 42 is arranged relative to the auxiliary magnetic steel 222 through the avoidance opening 223a.

[0060] In some specific embodiments, see Figure 7 In the first direction, part of the driving coil 40 is located in the avoidance opening 223a. While ensuring that the driving coil 40 is relatively spaced from the main magnetic steel 221 and the auxiliary magnetic steel 222, part of the driving coil 40 is accommodated in the avoidance opening 223a of the magnetic yoke 223, and the thickness of the driving coil 40 and the magnetic yoke 223 are overlapped, which can reduce the increase in the thickness of the device caused by the driving coil 40, that is, it is conducive to reducing the thickness of the device.

[0061] In some specific embodiments, participating Figure 6 The magnetic yoke 223 includes a first magnetic yoke 2231 and a second magnetic yoke 2232 arranged opposite to the first magnetic yoke 2231 to form an avoidance opening 223a, and part of the first magnetic yoke 2231 is fixedly connected to the main magnetic steel 221, and part of the first magnetic yoke 2231 is fixedly connected to the auxiliary magnetic steel 222; part of the second magnetic yoke 2232 is fixedly connected to the main magnetic steel 221, and part of the second magnetic yoke 2232 is fixedly connected to the auxiliary magnetic steel 222.

[0062] The first magnetic yoke 2231 and the second magnetic yoke 2232 are arranged relatively to each other along the third direction, or the first magnetic yoke 2231 and the second magnetic yoke 2232 are arranged relatively to each other along the second direction.

[0063] See also Figure 2 and 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 .

[0064] In some specific embodiments, Figure 6 The secondary pole core 225 includes a first fixing portion 2251 attached to the secondary magnet 222 and a second fixing portion 2252 bent and extended from the first fixing portion 2251 and located on the peripheral side of the secondary magnet 222. The second fixing portion 2252 located on the peripheral side of the secondary magnet 222 can guide the connection between the secondary pole core 225 and the secondary magnet 222 for rapid positioning and assembly.

[0065] In some specific embodiments, the elastic component 30 is connected to the second fixing portion 2252, so as to realize the connection between the elastic component 30 and the sound unit 20. That is, the second elastic arm 312 of the first elastic member 31 is connected to the second fixing portion 2252, and the fourth elastic arm 322 of the second elastic member 32 is connected to the second fixing portion 2252.

[0066] In one embodiment, see Figure 2 and 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 .

[0067] 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.

[0068] 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.

[0069] 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, wherein the vibration system comprises a sound membrane and a voice coil inserted in the magnetic gap and driving the sound membrane to vibrate and generate sound; characterized in that: The multifunctional sound-generating device further comprises: an elastic component fixed to the shell and suspending the sound-emitting unit in the receiving cavity, and a driving coil fixed to the inner wall of the shell and used to drive the sound-emitting unit to vibrate along a second direction, wherein 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; wherein the second direction is perpendicular to the first direction; The sound membrane extends to form a separator connected to the inner wall of the shell, and the separator divides the receiving cavity into a front cavity and a rear cavity; The shell includes a bottom wall and a top wall arranged opposite to each other along the first direction, and a peripheral wall connected between the bottom wall and the top wall, the partition is connected to the peripheral wall, and the shell is provided with a sound outlet hole connected to the front cavity, and the sound outlet hole is formed on the top wall.

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. In the first direction, the winding hole is arranged opposite to the magnetic gap.

4. The multifunctional sound-generating device according to claim 1, characterized in that: The sound unit includes a basin frame for supporting the sound membrane, the sound membrane includes a first folding ring portion and a first outer flange formed by bending from the outer edge of the first folding ring portion, the first outer flange is fixed on the basin frame, and the separator is extended from the first outer flange in a direction away from the basin frame.

5. The multifunctional sound-generating device according to claim 4, characterized in that: The separator includes a curved portion, a first connecting portion formed by bending and extending from the inner edge of the curved portion, and a second connecting portion formed by bending and extending from the outer edge of the curved portion, wherein the first connecting portion is connected to the first outer flange and is closely connected to the outer peripheral wall of the basin frame, and the second connecting portion is connected to the peripheral wall.

6. The multifunctional sound-generating device according to claim 5, characterized in that: The bent portion is formed concave toward the rear cavity.

7. The multifunctional sound-generating device according to claim 4, characterized in that: The vibration system also includes a diaphragm arranged opposite to the sound membrane along the first direction and a skeleton arranged between the sound membrane and the diaphragm, the skeleton 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 sound membrane also includes a first inner flange extending from the inner edge of the first folding ring portion, the first inner flange is fixed to the main body of the skeleton, and the diaphragm includes a second folding ring portion arranged opposite to the first folding ring portion, and a second folding ring portion extending from the outer edge of the second folding ring portion. An outer flange 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 face of the basin frame away from the first outer flange, the second inner flange is fixed to the second bending portion, the sound membrane 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 mounted on the magnetic circuit system, 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.

8. The multifunctional sound-generating device according to claim 1, characterized in that: 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 opening, the first side is arranged relative to the main magnetic steel through the avoidance opening, and the second side is arranged relative to the auxiliary magnetic steel through the avoidance opening.

9. The multifunctional sound-generating device according to claim 8, characterized in that: In the first direction, at least a portion of the drive coil is located in the avoidance opening.

10. The multifunctional sound-generating device according to claim 9, characterized in that: The magnetic yoke comprises a first magnetic yoke and a second magnetic yoke which are arranged at a relative interval to form the avoidance opening, and a part of the first magnetic yoke is fixedly connected to the main magnetic steel, and a part of the first magnetic yoke is fixedly connected to the auxiliary magnetic steel; Part of the second magnetic yoke is fixedly connected to the main magnetic steel, and part of the second magnetic yoke is fixedly connected to the auxiliary magnetic steel.

11. The multifunctional sound-generating device according to claim 1, characterized in that: The magnetic circuit system also includes a main pole core attached to the main magnetic steel and an auxiliary pole core surrounding the main pole core and attached to the auxiliary magnetic steel; The secondary pole core includes a first fixing portion attached to the secondary magnetic steel and a second fixing portion bent and extended from the first fixing portion and located at a peripheral side of the secondary magnetic steel, wherein the elastic component is fixedly connected to the second fixing portion.

12. 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 connected to the shell and a second elastic arm bent and extended from the first elastic arm for connecting to the sound-emitting unit, the second elastic member includes a third elastic arm connected to the shell and a fourth elastic arm bent and extended from the third elastic arm for connecting to the sound-emitting unit; In the second direction, the first elastic arm and the third elastic arm are respectively arranged on both sides of the sound unit, and in the third direction, the second elastic arm and the fourth elastic arm are respectively arranged on both sides of the sound unit; or, in the second direction, the second elastic arm and the fourth elastic arm are respectively arranged on both sides of the sound unit, and in the third direction, the first elastic arm and the third elastic arm are respectively arranged on both sides of the sound unit; wherein the third direction is perpendicular to both the first direction and the second direction.

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