阅读说明：本技术 一种多功能发声器件 (Multifunctional sounding device ) 是由 肖波 令狐荣林 于 2021-09-29 设计创作，主要内容包括：本发明提供了一种多功能发声器件,包括具有收容腔的壳体和置于收容腔内的发声单体,发声单体包括振动系统和驱动振动系统沿第一方向振动的磁路系统,磁路系统包括主磁钢和环绕主磁钢设置以形成磁间隙的副磁钢,振动系统包括音膜和插设于磁间隙中驱动所述音膜振动发声的音圈；多功能发声器件还包括固定于壳体上并将发声单体悬置于收容腔内的弹性组件和固定在壳体内壁上用于驱动发声单体沿第二方向振动的驱动线圈,驱动线圈包括第一侧边和与第一侧边相对设置的第二侧边,在第一方向上,第一侧边与主磁钢相对间隔设置,第二侧边与副磁钢相对间隔设置,第二方向与第一方向垂直；音膜延伸形成与壳体内壁连接的分隔体,以将收容腔分隔成前腔和后腔。(The invention provides a multifunctional sounding device, which comprises a shell with an accommodating cavity and a sounding monomer arranged in the accommodating cavity, wherein the sounding monomer comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate along a first direction, the magnetic circuit system comprises main magnetic steel and auxiliary magnetic steel arranged around the main magnetic steel to form a magnetic gap, and the vibration system comprises a sound film and a voice coil inserted in the magnetic gap and used for driving the sound film to vibrate and sound; the multifunctional sounding device also comprises an elastic component which is fixed on the shell and suspends the sounding monomer in the containing cavity, and a driving coil which is fixed on the inner wall of the shell and is used for driving the sounding monomer to vibrate along a second direction, wherein the driving coil comprises a first side edge and a second side edge which is arranged opposite to the first side edge; the sound film extends to form a separating body connected with the inner wall of the shell so as to separate the containing cavity into a front cavity and a rear cavity.)

1. A multifunctional sound production device comprises a shell with an accommodating cavity and a sound production unit arranged in the accommodating cavity, wherein the sound production unit comprises a vibration system and a magnetic circuit system for driving the vibration system to produce sound in a vibration mode along a first direction, the magnetic circuit system comprises main magnetic steel and auxiliary magnetic steel arranged around the main magnetic steel to form a magnetic gap, and the vibration system comprises a sound film and a voice coil inserted into the magnetic gap and used for driving the sound film to produce sound in a vibration mode; characterized in that, the multi-functional vocal device still includes:

the elastic assembly is fixed on the shell and suspends the sounding monomer in the accommodating cavity, and the driving coil is fixed on the inner wall of the shell and used for driving the sounding monomer to vibrate along a second direction, the driving coil comprises a first side edge and a second side edge arranged opposite to the first side edge, in the first direction, the first side edge and the main magnetic steel are arranged at an interval, and the second side edge and the auxiliary magnetic steel are arranged at an interval; wherein the second direction is perpendicular to the first direction;

the sound film extends to form a separating body connected with the inner wall of the shell, and the separating body separates the accommodating cavity into a front cavity and a rear cavity.

2. The multifunctional sound production device according to claim 1, wherein the polarity of the end of the main magnetic steel facing the drive coil is opposite to the polarity of the end of the auxiliary magnetic steel facing the drive coil.

3. The multi-function sound production device of claim 1, wherein the first side edge and the second side edge together enclose a wire winding hole, the wire winding hole being disposed opposite the magnetic gap in the first direction.

4. The multifunctional sound production device according to claim 1, wherein the sound production unit comprises a frame for supporting the sound membrane, the sound membrane comprises a first flange portion and a first flange portion formed by bending the outer edge of the first flange portion, the first flange portion is fixed on the frame, and the separator is formed by extending the first flange portion in a direction away from the frame.

5. The multifunctional sound production device as claimed in claim 4, wherein the separating body comprises a bending portion, a first connecting portion formed by bending and extending from an inner edge of the bending portion, and a second connecting portion formed by bending and extending from an outer edge of the bending portion, wherein the first connecting portion is connected with the first flanging and is attached to the outer peripheral wall of the basin frame, and the second connecting portion is fixed with the shell.

6. The multi-function sound production device of claim 5, wherein the housing includes a bottom wall and a top wall oppositely disposed in the first direction, and a peripheral wall connected between the bottom wall and the top wall, the second connecting portion being connected to the peripheral wall.

7. The multi-function sound production device of claim 5, wherein the bend is concavely formed towards the rear cavity.

8. The multifunctional sound production device according to claim 4, wherein the vibration system further comprises a diaphragm disposed opposite to the diaphragm along the first direction and a skeleton disposed between the diaphragm and the diaphragm, the skeleton comprises a main body portion, a first bending portion bent and extended from an inner edge of the main body portion and a second bending portion bent and extended from an outer edge of the main body portion, the voice coil is fixed to the first bending portion, the diaphragm further comprises a first inward-turned edge extended and formed from the inner edge of the first annular portion, the first inward-turned edge is fixed to the main body portion of the skeleton, the diaphragm comprises a second annular portion disposed opposite to the first annular portion, a second outward-turned edge extended and formed from the outer edge of the second annular portion and a second inward-turned edge extended and formed from the inner edge of the second annular portion, the second flanging is fixed the basin frame is kept away from on the terminal surface of first flanging, the second flanging is fixed in the second kink, the sound membrane still including set up in the inboard third ring portion of first ring portion, certainly the outward flange of third ring portion extends the third flanging that forms and certainly the inward flange of third ring portion extends the third flanging that forms, the sound production monomer is still located including the cover magnetic circuit's holding ring, wherein, the third flanging is fixed in on the main part of skeleton, the third flanging is fixed on the holding ring.

9. The multifunctional sound production device as claimed in claim 1, wherein the magnetic circuit system further comprises a magnetic yoke for fixedly connecting the main magnetic steel and the auxiliary magnetic steel, the magnetic yoke is formed with an avoiding opening, the first side edge is disposed opposite to the main magnetic steel through the avoiding opening, and the second side edge is disposed opposite to the auxiliary magnetic steel through the avoiding opening.

10. The multi-function sound production device of claim 9, wherein in the first direction at least a portion of the drive coil is located within the bypass opening.

11. The multifunctional sound production device as claimed in claim 10, wherein the magnetic yoke comprises a first magnetic yoke and a second magnetic yoke which are oppositely arranged at an interval to form the avoiding opening, and part of the first magnetic yoke is fixedly connected with the main magnetic steel and part of the first magnetic yoke is fixedly connected with the auxiliary magnetic steel; and part of the second magnetic yoke is fixedly connected with the main magnetic steel, and part of the second magnetic yoke is fixedly connected with the auxiliary magnetic steel.

12. The multifunctional sound production device according to claim 1, wherein the magnetic circuit system further comprises 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 auxiliary pole core comprises a first fixing part attached to the auxiliary magnetic steel and a second fixing part bent and extended from the first fixing part and located on the periphery of the auxiliary magnetic steel, wherein the elastic assembly is fixedly connected with the second fixing part.

13. The multifunctional sound production device according to claim 1, wherein the elastic assembly comprises a first elastic member and a second elastic member, the first elastic member comprises a first elastic arm connected with the housing and a second elastic arm bent and extended from the first elastic arm and used for being connected with the sound production unit, the second elastic member comprises a third elastic arm connected with the housing and a fourth elastic arm bent and extended from the third elastic arm and used for being connected with the sound production unit;

in the second direction, the first elastic arm and the third elastic arm are respectively arranged at two sides of the sounding monomer, and in the third direction, the second elastic arm and the fourth elastic arm are respectively arranged at two sides of the sounding monomer; or, in the second direction, the second elastic arm and the fourth elastic arm are respectively arranged at two sides of the sounding monomer, and in the third direction, the first elastic arm and the third elastic arm are respectively arranged at two sides of the sounding monomer; and the third direction is vertical to the first direction and the second direction.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of electronic equipment, in particular to a multifunctional sounding device.

[ background of the invention ]

With the development of electronic technology, portable consumer electronic devices, such as mobile phones, handheld game consoles, navigation devices, handheld multimedia entertainment devices, etc., are more and more sought after by people, and these electronic devices generally use voice and/or vibration to make system feedback, such as incoming call prompt of mobile phones, navigation prompt, vibration feedback of game consoles, etc.

Vibration feedback and voice feedback of electronic equipment among the prior art are accomplished through different devices respectively, consequently, need to integrate vibration feedback function and voice feedback on same device, but also mean that the structural component in the device can increase simultaneously, and then can lead to production processes and equipment process loaded down with trivial details.

[ summary of the invention ]

The invention aims to provide a multifunctional sounding device which not only has a vibration feedback function and a voice feedback function, but also reduces production procedures and assembly procedures.

The invention provides a multifunctional sounding device, which comprises a shell with an accommodating cavity and a sounding monomer arranged in the accommodating cavity, wherein the sounding monomer comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound along a first direction, the magnetic circuit system comprises main magnetic steel and auxiliary magnetic steel arranged around the main magnetic steel to form a magnetic gap, and the vibration system comprises a sound film and a voice coil inserted in the magnetic gap and used for driving the sound film to vibrate and sound; characterized in that, the multi-functional vocal device still includes:

the elastic assembly is fixed on the shell and suspends the sounding monomer in the accommodating cavity, and the driving coil is fixed on the inner wall of the shell and used for driving the sounding monomer to vibrate along a second direction, the driving coil comprises a first side edge and a second side edge arranged opposite to the first side edge, in the first direction, the first side edge and the main magnetic steel are arranged at an interval, and the second side edge and the auxiliary magnetic steel are arranged at an interval; wherein the second direction is perpendicular to the first direction;

the sound film extends to form a separating body connected with the inner wall of the shell, and the separating body separates the accommodating cavity into a front cavity and a rear cavity.

In one embodiment of the present invention, a polarity of the main magnetic steel toward one end of the driving coil is opposite to a polarity of the sub magnetic steel toward one end of the driving coil.

As an embodiment of the present invention, the first side and the second side together enclose a winding hole, and the winding hole is disposed opposite to the magnetic gap in the first direction.

As an embodiment of the present invention, the sounding unit includes a frame for supporting the sound diaphragm, the sound diaphragm includes a first hinge portion and a first flange extending from an outer edge of the first hinge portion, the first flange is fixed on the frame, and the separating body extends from the first flange in a direction away from the frame.

As an embodiment of the invention, the partition body includes a bending portion, a first connecting portion formed by bending and extending from an inner edge of the bending portion, and a second connecting portion formed by bending and extending from an outer edge of the bending portion, wherein the first connecting portion is connected with the first flanging and is attached to the outer peripheral wall of the basin frame, and the second connecting portion is fixed with the housing.

As an embodiment of the present invention, the housing includes a bottom wall and a top wall that are disposed opposite to each other in the first direction, and a peripheral wall that is connected between the bottom wall and the top wall, and the second connection portion is connected to the peripheral wall.

As an embodiment of the present invention, the curved portion is concavely formed toward the rear cavity.

As an embodiment of the present invention, the vibration system further includes a diaphragm disposed opposite to the diaphragm along the first direction, and a frame disposed between the diaphragm and the diaphragm, the frame includes a main body portion, a first bending portion bent and extended from an inner edge of the main body portion, and a second bending portion bent and extended from an outer edge of the main body portion, the voice coil is fixed to the first bending portion, the diaphragm further includes a first inward-turned edge formed by extending from an inner edge of the first ring-turned portion, the first inward-turned edge is fixed to the main body portion of the frame, the diaphragm includes a second ring-turned portion disposed opposite to the first ring-turned portion, a second outward-turned edge formed by extending from an outer edge of the second ring-turned portion, and a second inward-turned edge formed by extending from an inner edge of the second ring-turned portion, the second outward-turned edge is fixed to an end face of the frame away from the first outward-turned edge, the sound membrane still including set up in the inboard third ring portion of first ring portion of rolling over, certainly the outward flange of third ring portion extends the third flanging that forms and certainly the inward flange of third ring portion extends the third flanging that forms, the sound production monomer is still located including the cover magnetic circuit's holding ring, wherein, the third flanging is fixed in on the main part of skeleton, the third flanging is fixed on the holding ring.

As an embodiment of the present invention, the magnetic circuit system further includes a magnetic yoke for fixedly connecting the main magnetic steel and the auxiliary magnetic steel, the magnetic yoke is formed with an avoidance port, the first side edge is disposed at an interval opposite to the main magnetic steel through the avoidance port, and the second side edge is disposed at an interval opposite to the auxiliary magnetic steel through the avoidance port.

As an embodiment of the present invention, at least a portion of the drive coil is positioned within the bypass opening in the first direction.

As an embodiment of the present invention, the magnetic yoke includes a first magnetic yoke and a second magnetic yoke which are oppositely disposed at an interval to form the avoiding opening, and a portion of the first magnetic yoke is fixedly connected to the main magnetic steel, and a portion of the first magnetic yoke is fixedly connected to the auxiliary magnetic steel; and part of the second magnetic yoke is fixedly connected with the main magnetic steel, and part of the second magnetic yoke is fixedly connected with the auxiliary magnetic steel.

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

the auxiliary pole core comprises a first fixing part attached to the auxiliary magnetic steel and a second fixing part bent and extended from the first fixing part and located on the periphery of the auxiliary magnetic steel, wherein the elastic assembly is fixedly connected with the second fixing part.

As an embodiment of the present invention, the elastic assembly includes a first elastic member and a second elastic member, the first elastic member includes a first elastic arm connected to the housing and a second elastic arm formed by bending and extending from the first elastic arm and used for connecting to the sound generating unit, the second elastic member includes a third elastic arm connected to the housing and a fourth elastic arm formed by bending and extending from the third elastic arm and used for connecting to the sound generating unit;

in the second direction, the first elastic arm and the third elastic arm are respectively arranged at two sides of the sounding monomer, and in the third direction, the second elastic arm and the fourth elastic arm are respectively arranged at two sides of the sounding monomer; or, in the second direction, the second elastic arm and the fourth elastic arm are respectively arranged at two sides of the sounding monomer, and in the third direction, the first elastic arm and the third elastic arm are respectively arranged at two sides of the sounding monomer; and the third direction is vertical to the first direction and the second direction.

As an example of the present invention, a,

the invention has the beneficial effects that: in the invention, the sounding single body is suspended in the accommodating cavity through the elastic component, so that the sounding single body can move relative to the shell; fixing the drive coil on the inner wall of the shell, and enabling the first side edge of the drive coil to be arranged at intervals relative to the main magnetic steel along the first direction (the vibration direction of a vibration system) and enabling the second side edge of the drive coil to be arranged at intervals relative to the auxiliary magnetic steel along the first direction, so that the sounding monomer can vibrate along the second direction vertical to the first direction under the interaction of the main magnetic steel, the auxiliary magnetic steel and the drive coil, namely, the whole sounding monomer is used as a rotor, the drive coil is used as a stator, and the sounding monomer is driven to vibrate through the interaction force among the drive coil, the main magnetic steel and the auxiliary magnetic steel so as to realize the vibration feedback of the device; simultaneously with the help of the flexible physical properties of sound membrane, make the sound membrane extend the division body that forms and be connected with shells inner wall to can separate into preceding chamber and rear chamber with acceping the chamber and guarantee the sound generating performance, in addition, the division body has the flexible physical properties of sound membrane equally, guarantees that the sound generating monomer can form the vibration in acceping the chamber reciprocating motion. This technical scheme is extended by the free sound membrane of sound production and is formed the division body, and after acceping the chamber with the free unit assembly of sound production through elastic component, alright in order to realize the separation (separating into preceding chamber and back chamber) and guarantee the free vibration of sound production free body of acceping the chamber, the device among this technical scheme not only has vibration feedback function and speech feedback function concurrently promptly, has reduced production processes and equipment process moreover.

[ description of the drawings ]

FIG. 1 is a schematic view of an overall structure of a multifunctional sound generating device according to the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic diagram of a partially exploded structure of the multi-function sound producing device;

FIG. 4 is a schematic view of a partial structure of the sound diaphragm;

fig. 5 is a schematic view of the structure of the drive coil;

FIG. 6 is a bottom view of FIG. 1 with the bottom wall removed;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 8 is a partial enlarged view at C in fig. 7.

In the figure:

100. a multifunctional sound producing device; 10. a housing; 10a, a containing cavity; 10a1, anterior chamber; 10a2, rear cavity; 10b, sound outlet holes; 11. a bottom wall; 12. a top wall; 13. a peripheral wall; 20. a sounding monomer; 21. a vibration system; 211. a voice coil; 212. a sound membrane; 2121. a separator; 2121a, a bend; 2121b, a first connection portion; 2121c, a second connecting part; 2122. a first hinge part; 2123. a first outward flange; 2124. a first inner flange; 2125. a third hinge part; 2126. a third outward flange; 2127. third inward flanging; 213. vibrating diaphragm; 2131. a second flange part; 2132. a second outer flanging; 2133. a second inner flanging; 214. a ball top; 215. a framework; 2151. a main body portion; 2152. a first bent portion; 2153. a second bent portion; 22. a magnetic circuit system; 22a, a magnetic gap; 221. main magnetic steel; 222. a secondary magnetic steel; 223. a magnetic yoke; 223a, an avoidance port; 2231. a first yoke; 2232. a second yoke; 224. a main pole core; 225. a secondary pole core; 2251. a first fixed part; 2252. a second fixed part; 226. magnetic steel is arranged; 2261. a base; 2262. a top portion; 23. a basin stand; 24. a positioning ring; 25. a flexible circuit board; 251. a first fixed arm; 252. a second fixed arm; 253. a spring arm; 30. an elastic component; 31. a first elastic member; 311. a first resilient arm; 312. a second resilient arm; 32. a second elastic member; 321. a third elastic arm; 322. a fourth elastic arm; 40. a drive coil; 40a, a winding hole; 41. a first side edge; 42. a second side edge.

[ detailed description ] embodiments

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention is further described with reference to the following figures and embodiments. The invention provides a multifunctional sounding device 100 which can be used in electronic equipment and can play a role in feedback prompt by sounding and also play a role in feedback prompt by vibrating. Referring to fig. 1 to 8, the multifunctional sound generating device 100 includes a housing 10 having a housing cavity 10a and a sound generating unit 20 housed in the housing cavity 10a, the housing 10 includes a bottom wall 11 and a top wall 12 oppositely disposed in 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 forming the housing cavity 10 a. The sounding monomer 20 comprises a vibration system 21 and a magnetic circuit system 22 for driving the vibration system 21 to vibrate and sound along a first direction, the magnetic circuit system 22 comprises a main magnetic steel 221 and an auxiliary magnetic steel 222 arranged around the main magnetic steel 221 to form a magnetic gap 22a, the vibration system 21 comprises a voice film 212 and a voice coil 211 inserted in the magnetic gap 22a and used for driving the voice film 212 to vibrate and sound, and the voice coil 211 drives the voice film 212 to vibrate and sound under the action of the main magnetic steel 221 and the auxiliary magnetic steel 222, so that voice feedback prompting of the device is realized.

Referring to fig. 2, 6 and 7, in order to realize the vibration feedback function of the device, the device further includes an elastic component 30 and a driving coil 40, the elastic component 30 is fixed on the casing 10 and suspends the sound-generating unit 20 in the accommodating cavity 10a, the driving coil 40 is fixed on the inner wall of the casing 10 and is used for driving the sound-generating unit 20 to vibrate along the second direction, the driving coil 40 includes a first side 41 and a second side 42 opposite to the first side 41, and in the first direction, the first side 41 is arranged opposite to the main magnetic steel 221 at an interval, and the second side 42 is arranged opposite to the auxiliary magnetic steel 222 at an interval; wherein the second direction is perpendicular to the first direction; the sound diaphragm 212 is extended to form a partition body 2121 connected to the inner wall of the housing 10, and the partition body 2121 divides the accommodation chamber 10a into a front chamber 10a1 and a rear chamber 10a 2.

Referring to fig. 1 and 7, the casing 10 is provided with a sound outlet hole 10b communicating with the front cavity 10a1 to realize sound emission; the rear cavity 10a2 may be filled with sound absorbing powder to improve the low frequency acoustic performance of the sound producing device.

As shown in fig. 1, 6 and 7, the Z direction is defined as a first direction, the X direction is defined as a second direction, the Y direction is defined as a third direction, the first direction is defined as a vibration direction of the vibration system 21, the second direction is defined as a vibration direction of the sound generating 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.

In the present invention, the sound generating unit 20 is suspended in the accommodating cavity 10a by the elastic component 30, so that the sound generating unit 20 can move relative to the housing 10; fixing the driving coil 40 on the inner wall of the casing 10, and making the first side 41 of the driving coil 40 opposite to the main magnetic steel 221 along the first direction (the vibration direction of the vibration system 21) and the second side 42 opposite to the auxiliary magnetic steel 222 along the first direction and the interval, so that the entire sounding monomer 20 can 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 sounding monomer 20 is used as a mover, the driving coil 40 is used as a stator, and the sounding monomer 20 is driven to vibrate by the interaction force between the driving coil 40 and the main magnetic steel 221, the auxiliary magnetic steel 222 to realize the vibration feedback of the device; meanwhile, the sound diaphragm 212 is extended to form a separating body 2121 connected with the inner wall of the housing 10 by virtue of the flexible physical property of the sound diaphragm 212, so that the accommodating cavity 10a can be separated into a front cavity 10a1 and a rear cavity 10a2, and the sound production performance is ensured, and in addition, the separating body 2121 also has the flexible physical property of the sound diaphragm 212, so that the sound production unit 20 can reciprocate in the accommodating cavity 10a to form vibration. According to the technical scheme, the sound film 212 of the sound generating unit 20 extends to form the separator 2121, and after the sound generating unit 20 is assembled into the accommodating cavity 10a through the elastic component 30, the accommodating cavity 10a can be separated (separated into the front cavity 10a1 and the rear cavity 10a2) and the vibration of the sound generating unit 20 is guaranteed, namely, the device in the technical scheme not only has the vibration feedback function and the voice feedback function, but also reduces the production process and the assembly process.

Note that the polarity of the end of the main magnet 221 facing the driving coil 40 is opposite to the polarity of the end of the sub magnet 222 facing the driving coil 40, so that the sound generating unit 20 can vibrate.

In some specific embodiments, referring to fig. 5 and 6, the first side edge 41 and the second side edge 42 jointly enclose the winding hole 40a, in the first direction, the winding hole 40a is disposed opposite to the magnetic gap 22a, and the relative positions between the driving coil 40 and the main magnetic steel 221 and the auxiliary magnetic steel 222 are optimized to increase the relative acting force between the driving coil 40 and the main magnetic steel 221 and the auxiliary magnetic steel 222, so as to ensure the driving of the sound-generating unit 20.

As shown in fig. 6, two drive coils 40 are provided, and the two drive coils 40 are arranged and fixed on the inner wall of the casing 10 along the second direction, and the number of the drive coils 40 is increased in a limited space, so that the relative area between the drive coils 40 and the main magnetic steel 221 and the relative area between the drive coils 40 and the auxiliary magnetic steel 222 can be increased, and the interaction force between the drive coils 40 and the main magnetic steel 221 and the auxiliary magnetic steel 222 can be increased.

In one embodiment, referring to fig. 2 and 6, the elastic assembly 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 casing 10 and a second elastic arm 312 bent and extended from the first elastic arm 311 for connecting to the sound generating unit 20, and the second elastic member 32 includes a third elastic arm 321 connected to the casing 10 and a fourth elastic arm 322 bent and extended from the third elastic arm 321 for connecting to the sound generating unit 20.

In some specific embodiments, the first elastic arm 311 and the third elastic arm 321 are respectively disposed on two sides of the sound generating unit 20 in the second direction, and the second elastic arm 312 and the fourth elastic arm 322 are respectively disposed on two sides of the sound generating unit 20 in the third direction; or, in the second direction, the second elastic arm 312 and the fourth elastic arm 322 are respectively disposed at two sides of the sounding unit 20, and in the third direction, the first elastic arm 311 and the third elastic arm 321 are respectively disposed at two sides of the sounding unit 20, see fig. 6 specifically; thereby ensuring that the elastic member 30 can stably suspend the sound-emitting unit 20 in the receiving cavity 10 a.

In some embodiments, the first elastic arm 311 may be connected to the housing 10 by an adhesive member having viscosity, and the second elastic arm 312 may be connected to the sounding unit 20 by an adhesive member having viscosity.

In some embodiments, the third elastic arm 321 may be connected to the housing 10 by an adhesive member, and the fourth elastic arm 322 may be connected to the sounding unit 20 by an adhesive member.

In one embodiment, referring to fig. 8, the sound generating unit 20 further includes a frame 23 for supporting the sound membrane 212, the sound membrane includes a first hinge portion 2122 and a first flange 2123 formed by bending and extending from an outer edge of the first hinge portion 2122, the first flange 2123 is fixed on the frame 23, and the separator 2121 is formed by extending from the first flange 2123 in a direction away from the frame 23. By fixing the first flanging 2123 on the frame 23, on one hand, the sound diaphragm 212 is supported by the frame 23, and on the other hand, the force between the separating body 2121 and the first folding ring 2122 is conducted and isolated, so that the separating body 2121 vibrates independently along the second direction relative to the first folding ring 2122, and the first folding ring 2122 vibrates independently along the first direction relative to the separating body 2121.

Referring to fig. 8, the separating body 2121 comprises a bending part 2121a, a first connecting part 2121b bent and extended from an inner edge of the bending part 2121a, and a second connecting part 2121c bent and extended from an outer edge of the bending part 2121a, wherein the first connecting part 2121b is connected to and attached to the outer peripheral wall 13 of the frame 23 via a first turned-out edge 2123, which enhances the connection between the sound membrane 212 and the frame 23, and further isolates the force transmission between the separating body 2121 and the first turned-out part 2122; the second connecting portion 2121c is fixed to the housing 10, and a stable connection between the separator 2121 and the inner wall of the housing 10 is ensured by the second connecting portion 2121 c; a bent portion is provided between the first connection portion 2121b and the second connection portion 2121c, and when the driving coil 40 drives the sound generating unit 20 to vibrate in the second direction, the partition body 2121 is more easily deformed by being pushed and pulled by the sound generating unit 20, so that the sound generating unit 20 is more easily vibrated.

In some specific embodiments, the bent portion 2121a has a ring shape, and the bent portion 2121a having a ring shape surrounds the sound generating unit 20.

In some embodiments, the curved portion 2121a is concavely formed toward the rear chamber 10a2, so that the space of the front chamber 10a1 can be increased to improve the acoustic performance.

In some specific embodiments, referring to fig. 4, 7 and 8, the second connecting portion 2121c is connected to the peripheral wall 13, i.e., the receiving cavity 10a is divided into a front cavity 10a1 and a rear cavity 10a2 by the separating body 2121 in the first direction.

Referring to fig. 2, 3, 7 and 8, the structure of the vibration system 21 is illustrated below:

the vibration system 21 further includes a diaphragm 213 disposed opposite to the diaphragm 212 along the first direction, and a frame 215 disposed between the diaphragm 212 and the diaphragm 213, where the frame 215 includes a main body 2151, a first bending portion 2152 bent and extended from an inner edge of the main body 2151, and a second bending portion 2153 bent and extended from an outer edge of the main body 2151, the voice coil 211 is fixed to the first bending portion 2152, the diaphragm 212 further includes a first inner flange 2124 extended from an inner edge of the first flange 2122, the first inner flange 2124 is fixed to the main body 2151 of the diaphragm 215, the diaphragm 213 includes a second flange 2131 disposed opposite to the first flange 2122, a second outer flange 2132 extended from an outer edge of the second flange 2131, and a second inner flange 2133 extended from an inner edge of the second flange 2131, the second outer flange 2133 is fixed to an end surface of the frame 23 away from the first outer flange 2123, the second inner flange 2132 is fixed to the second bending portion 2153, the sound diaphragm 212 further includes a third ring part 2125 disposed inside the first ring part 2122, a third outward flange 2126 formed by extending from an outer edge of the third ring part 2125, and a third inward flange 2127 formed by extending from an inner edge of the third ring part 2125, and the sound generating unit 20 further includes a positioning ring 24 sleeved on the magnetic circuit 22, wherein the third outward flange 2126 is fixed on the main body portion 2151 of the frame 215, and the third inward flange 2127 is fixed on the positioning ring 24.

The vibration system 21 further includes a dome 214, the dome 214 is fixed on the main body portion 2151 of the frame 215 and located between the first inward turned edge 2124 and the third outward turned edge 2126, the strength of the frame 215 can be enhanced through the dome 214, the torsion resistance and the sway resistance of the frame 215 can be improved, and the acoustic performance of the sound generating unit 20 can be improved.

In addition, referring to the drawings, the sounding unit 20 further includes a flexible circuit board 25 electrically connected to the voice coil 211, and the flexible circuit board 25 includes a first fixing arm 251 interposed between the frame 23 and the second outer flange 2132, a second fixing arm 252 interposed between the frame 215 and the second inner flange 2133, and a resilient arm 253 connected between the first fixing arm 251 and the second fixing arm 252.

Referring to fig. 2, 6 and 7, the structure of the magnetic circuit system 22 will be described in detail as follows:

the magnetic circuit system 22 further includes a magnetic yoke 223 for fixedly connecting the main magnet 221 and the auxiliary magnet 222, the magnetic yoke 223 is formed with an avoiding opening 223a, the first side 41 is disposed opposite to the main magnet 221 through the avoiding opening 223a at an interval, and the second side 42 is disposed opposite to the auxiliary magnet 222 through the avoiding opening 223a at an interval.

In some specific embodiments, referring to fig. 7, in the first orientation, the drive coil 40 is partially positioned within the escape aperture 223 a. The driving coil 40 is ensured to be arranged opposite to the main magnet steel 221 and the auxiliary magnet steel 222 at intervals, meanwhile, part of the driving coil 40 is accommodated in the avoidance opening 223a of the magnetic yoke 223, the thicknesses of the driving coil 40 and the magnetic yoke 223 are overlapped, the increase range of the thickness of the device caused by the driving coil 40 can be reduced, and the thickness of the device is favorably reduced.

In some specific embodiments, referring to fig. 6, the magnetic yoke 223 includes a first magnetic yoke 2231 and a second magnetic yoke 2232 disposed opposite to the first magnetic yoke 2231 to form a avoiding opening 223a, and a portion of the first magnetic yoke 2231 is fixedly connected to the main magnet steel 221, and a portion of the first magnetic yoke 2231 is fixedly connected to the auxiliary magnet steel 222; part of the second yoke 2232 is fixedly connected to the main magnet 221, and part of the second yoke 2232 is fixedly connected to the sub magnet 222.

The first and second yokes 2231 and 2232 are disposed at intervals in the third direction, or the first and second yokes 2231 and 2232 are disposed at intervals in the second direction.

Referring to fig. 2 and 7, the magnetic circuit system 22 further includes a main pole core 224 attached to the first main magnet 221, and a sub-pole core 225 surrounding the main pole core 224 and attached to the sub-magnet 222.

In some specific embodiments, referring to fig. 6, the auxiliary pole core 225 includes a first fixing portion 2251 attached to the auxiliary magnetic steel 222 and a second fixing portion 2252 extending from the first fixing portion 2251 and located on the peripheral side of the auxiliary magnetic steel 222, and the second fixing portion 2252 located on the peripheral side of the auxiliary magnetic steel 222 can guide the connection between the auxiliary pole core 225 and the auxiliary magnetic steel 222 for quick positioning and assembly.

In some specific embodiments, the elastic member 30 is connected to the second fixing part 2252, so that the elastic member 30 is connected to the sound emitting unit 20. That is, the second elastic arm 312 of the first elastic member 31 is connected to the second fixing part 2252, and the fourth elastic arm 322 of the second elastic member 32 is connected to the second fixing part 2252.

In one embodiment, referring to fig. 2 and 7, the magnetic circuit system 22 further includes an upper magnetic steel 226 attached to the side of the main pole core 224 away from the main magnetic steel 221, and the positioning ring 24 surrounds and abuts the upper magnetic steel 226.

In some specific embodiments, the upper magnetic steel 226 includes a base 2261 abutting on the main pole core 224 and a top 2262 formed by 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 on the base 2261, so as to achieve stable setting of the positioning ring 24.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above are only embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept of the present invention, but these are all within the scope of the present invention.