阅读说明：本技术 发声器件 (Sound production device ) 是由 宋威 张帆 金鑫 于 2019-12-27 设计创作，主要内容包括：本发明公开一种发声器件,其包括盆架、振动系统及磁路系统；盆架包括用于收容磁路系统的下盖和盖设于下盖的上盖；振动系统包括呈环状的振膜、插入设于所述磁间隙的音圈以及分别连接所述振膜和所述音圈的骨架；振膜包括第一环形振膜、第二环形振膜及环形球顶,第一环形振膜的外侧与下盖连接,第一环形振膜的内侧与环形球顶的外侧连接,第二环形振膜的外侧与环形球顶的内侧连接,第二环形振膜的内侧与上盖连接；所述骨架的一端与环形球顶连接,其另一端延伸至磁间隙内与音圈连接；振膜与上盖共同围成前腔。本发明还公开另两种发声器件。与相关技术相比,本发明的发声器件在空间利用率高、磁路可最大化且声学性能优。(The invention discloses a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the basin frame is provided with a basin opening; the basin stand comprises a lower cover for accommodating the magnetic circuit system and an upper cover covering the lower cover; the vibration system comprises an annular vibrating diaphragm, a voice coil inserted into the magnetic gap and a framework respectively connected with the vibrating diaphragm and the voice coil; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular ball top, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular ball top, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular ball top, and the inner side of the second annular vibrating diaphragm is connected with the upper cover; one end of the framework is connected with the annular ball top, and the other end of the framework extends into the magnetic gap and is connected with the voice coil; the vibrating diaphragm and the upper cover jointly enclose a front cavity. The invention also discloses another two sounding devices. Compared with the related art, the sound production device has the advantages of high space utilization rate, maximized magnetic circuit and excellent acoustic performance.)

1. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, and the magnetic circuit system is provided with a magnetic gap; the pot frame is characterized by comprising a lower cover for accommodating the magnetic circuit system and an upper cover which is arranged on the lower cover in a covering manner; the vibration system comprises an annular vibrating diaphragm, a voice coil and a framework, wherein the voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular ball top, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular ball top, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular ball top, and the inner side of the second annular vibrating diaphragm is connected with the upper cover; one end of the framework is connected with the annular dome, and the other end of the framework extends into the magnetic gap and is connected with the voice coil; the diaphragm and the upper cover enclose a front cavity together.

2. The sounding device according to claim 1, wherein the upper cover is annular, the lower cover is annular, the upper cover and the lower cover together define a receiving space and a sounding cavity that is annular and surrounds the receiving space, the diaphragm is located in the sounding cavity, and the magnetic circuit system is received in the receiving space.

3. The sounding device as claimed in claim 1, wherein the magnetic circuit system comprises a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, and a secondary magnetic steel surrounding the main magnetic steel and spaced apart from each other to form the magnetic gap, the secondary magnetic steel is provided with an avoiding gap, and the bobbin passes through the avoiding gap and extends into the magnetic gap to connect with the voice coil.

4. The sounder device according to claim 3, wherein the upper cover includes an upper cover bottom wall, an upper cover outer wall extending from an outer peripheral side of the upper cover bottom wall in a bent manner, and an upper cover inner wall extending from an inner peripheral side of the upper cover bottom wall in a bent manner; the lower cover comprises a lower cover bottom wall, a lower cover outer wall and a lower cover inner wall, wherein the lower cover outer wall is bent and extended from the outer periphery of the lower cover bottom wall, and the lower cover inner wall is bent and extended from the inner periphery of the lower cover bottom wall; the utility model discloses a magnetic gap, including upper cover outer wall butt, lower cover outer wall, the outside butt of first annular vibrating diaphragm the lower cover inner wall, the inboard butt of second annular vibrating diaphragm in the upper cover inner wall, the lower cover inner wall is equipped with the hole of stepping down, the skeleton passes in proper order the hole of stepping down with it extends to dodge the breach in the magnetic gap and with the voice coil loudspeaker voice coil is connected.

5. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, and the magnetic circuit system is provided with a magnetic gap; the basin stand is characterized by comprising a lower cover for accommodating the magnetic circuit system and an upper cover fixed on the magnetic circuit system; the vibration system comprises an annular vibrating diaphragm, a voice coil and a framework, wherein the voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular ball top, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular ball top, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular ball top, and the inner side of the second annular vibrating diaphragm is connected with the upper cover; one end of the framework is connected with the annular ball top, and the other end of the framework extends into the magnetic gap and is connected with the voice coil.

6. The sounding device as claimed in claim 5, wherein the magnetic circuit system comprises a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, a secondary magnetic steel surrounding the main magnetic steel and spaced from each other to form the magnetic gap, and a pole core fixed to both the main magnetic steel and the secondary magnetic steel and disposed opposite to the magnetic conductive plate, wherein the secondary magnetic steel is provided with an avoiding gap, the bobbin passes through the avoiding gap and extends into the magnetic gap to be connected to the voice coil, and the pole core is fixed to the upper cover.

7. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, and the magnetic circuit system is provided with a magnetic gap; the basin stand is characterized by comprising a lower cover for accommodating the magnetic circuit system; the vibration system comprises an annular vibrating diaphragm, a voice coil and a framework, wherein the voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular dome, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular dome, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular dome, and the inner side of the second annular vibrating diaphragm is connected with the magnetic circuit system; one end of the framework is connected with the annular ball top, and the other end of the framework extends into the magnetic gap and is connected with the voice coil.

8. The sounding device as claimed in claim 7, wherein the magnetic circuit system comprises a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, and a secondary magnetic steel surrounding the main magnetic steel and spaced apart from each other to form the magnetic gap, the secondary magnetic steel is provided with an avoiding gap, and the bobbin passes through the avoiding gap and extends into the magnetic gap to connect with the voice coil.

9. The sound production device as claimed in claim 8, wherein the tub support further comprises an upper cover disposed opposite to the lower cover, the magnetic circuit system further comprises a pole piece fixed to the main magnetic steel and the auxiliary magnetic steel at the same time and disposed opposite to the magnetic conductive plate, and the pole piece is fixed to the upper cover.

10. The sound production device of claim 9, wherein the inner side of the second annular diaphragm is sandwiched between the secondary magnetic steel and the pole piece.

11. The sounding device according to claim 8, wherein the basin frame further comprises an upper cover covering the lower cover, the upper cover and the lower cover together enclose an accommodating space, the magnetic circuit system is accommodated in the accommodating space, and the diaphragm and the upper cover together enclose a front cavity.

12. The sound production device of claim 11, wherein the upper cover is annular, the lower cover is annular, the upper cover and the lower cover together enclose the receiving space and a sound production cavity that is annular and surrounds the receiving space, and the diaphragm is located in the sound production cavity.

13. The sounding device according to any one of claims 1-12, wherein there are two of the bobbins, and the two bobbins respectively extend from opposite sides of the voice coil to connect the annular dome.

14. The sounding device according to claim 13, wherein each of the bobbins includes a first extending portion, a second extending portion and a third extending portion, the first extending portion is spaced apart from the voice coil, the second extending portion and the third extending portion are respectively connected to an outer sidewall of the voice coil from two ends of the first extending portion along a direction perpendicular to a vibration direction of the voice coil, and the first extending portion is connected to the annular dome.

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electroacoustic device, and more particularly, to a sound generating device for a portable electronic device.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices.

[ summary of the invention ]

The invention aims to provide a sounding device which has high space utilization rate, maximized magnetic circuit and excellent acoustic performance.

In order to achieve the above object, the present invention provides a sound production device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and produce sound, and the magnetic circuit system has a magnetic gap; the basin stand comprises a lower cover for accommodating the magnetic circuit system and an upper cover which is arranged on the lower cover in a covering manner; the vibration system comprises an annular vibrating diaphragm, a voice coil and a framework, wherein the voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular ball top, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular ball top, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular ball top, and the inner side of the second annular vibrating diaphragm is connected with the upper cover; one end of the framework is connected with the annular dome, and the other end of the framework extends into the magnetic gap and is connected with the voice coil; the diaphragm and the upper cover enclose a front cavity together.

Preferably, the upper cover is annular, the lower cover is annular, the upper cover and the lower cover enclose an accommodating space and an annular sounding cavity surrounding the accommodating space, the diaphragm is located in the sounding cavity, and the magnetic circuit system is accommodated in the accommodating space.

Preferably, the magnetic circuit system comprises a magnetic conduction plate fixed on the lower cover, main magnetic steel fixed on the magnetic conduction plate, and auxiliary magnetic steel surrounding the main magnetic steel and spaced from each other to form the magnetic gap, the auxiliary magnetic steel is provided with an avoidance notch, and the framework penetrates through the avoidance notch and extends into the magnetic gap to be connected with the voice coil.

Preferably, the upper cover comprises an upper cover bottom wall, an upper cover outer wall bent and extended from the outer periphery of the upper cover bottom wall, and an upper cover inner wall bent and extended from the inner periphery of the upper cover bottom wall; the lower cover comprises a lower cover bottom wall, a lower cover outer wall and a lower cover inner wall, wherein the lower cover outer wall is bent and extended from the outer periphery of the lower cover bottom wall, and the lower cover inner wall is bent and extended from the inner periphery of the lower cover bottom wall; the utility model discloses a magnetic gap, including upper cover outer wall butt, lower cover outer wall, the outside butt of first annular vibrating diaphragm the lower cover inner wall, the inboard butt of second annular vibrating diaphragm in the upper cover inner wall, the lower cover inner wall is equipped with the hole of stepping down, the skeleton passes in proper order the hole of stepping down with it extends to dodge the breach in the magnetic gap and with the voice coil loudspeaker voice coil is connected.

The invention provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, and the magnetic circuit system is provided with a magnetic gap; the basin stand comprises a lower cover for accommodating the magnetic circuit system and an upper cover fixed on the magnetic circuit system; the vibration system comprises an annular vibrating diaphragm, a voice coil and a framework, wherein the voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular ball top, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular ball top, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular ball top, and the inner side of the second annular vibrating diaphragm is connected with the upper cover; one end of the framework is connected with the annular ball top, and the other end of the framework extends into the magnetic gap and is connected with the voice coil.

Preferably, the magnetic circuit system includes a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, an auxiliary magnetic steel surrounding the main magnetic steel and forming the magnetic gap at an interval, and a pole core fixed to the main magnetic steel and the auxiliary magnetic steel simultaneously and arranged opposite to the magnetic conductive plate, the auxiliary magnetic steel is provided with an avoiding notch, the framework passes through the avoiding notch and extends into the magnetic gap to be connected with the voice coil, and the pole core is fixed to the upper cover.

The invention provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, and the magnetic circuit system is provided with a magnetic gap; the basin stand comprises a lower cover for accommodating the magnetic circuit system; the vibration system comprises an annular vibrating diaphragm, a voice coil and a framework, wherein the voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm comprises a first annular vibrating diaphragm, a second annular vibrating diaphragm and an annular dome, the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the first annular vibrating diaphragm is connected with the outer side of the annular dome, the outer side of the second annular vibrating diaphragm is connected with the inner side of the annular dome, and the inner side of the second annular vibrating diaphragm is connected with the magnetic circuit system; one end of the framework is connected with the annular ball top, and the other end of the framework extends into the magnetic gap and is connected with the voice coil.

Preferably, the magnetic circuit system comprises a magnetic conduction plate fixed on the lower cover, main magnetic steel fixed on the magnetic conduction plate, and auxiliary magnetic steel surrounding the main magnetic steel and spaced from each other to form the magnetic gap, the auxiliary magnetic steel is provided with an avoidance notch, and the framework penetrates through the avoidance notch and extends into the magnetic gap to be connected with the voice coil.

Preferably, the basin stand further comprises an upper cover arranged opposite to the lower cover, the magnetic circuit system further comprises a pole core fixed to the main magnetic steel and the auxiliary magnetic steel simultaneously and arranged opposite to the magnetic conductive plate, and the pole core is fixed to the upper cover.

Preferably, the inner side of the second annular diaphragm is clamped between the auxiliary magnetic steel and the pole core.

Preferably, the basin stand further comprises an upper cover covering the lower cover, the upper cover and the lower cover enclose an accommodating space together, the magnetic circuit system is accommodated in the accommodating space, and the diaphragm and the upper cover enclose a front cavity together.

Preferably, the upper cover is annular, the lower cover is annular, the upper cover and the lower cover enclose the accommodating space and an annular sound-generating cavity surrounding the accommodating space, and the diaphragm is located in the sound-generating cavity.

Preferably, the number of the skeletons is two, and the two skeletons extend from two opposite sides of the voice coil to be connected with the annular dome respectively.

Preferably, each of the bobbins includes a first extension portion, a second extension portion and a third extension portion, the first extension portion is disposed at a side of the voice coil at an interval, the second extension portion and the third extension portion are respectively connected to an outer sidewall of the voice coil from two ends of the first extension portion along a direction perpendicular to a vibration direction of the voice coil, and the first extension portion is connected to the annular dome.

Compared with the prior art, the sound production device is provided with the vibration system and comprises the double-vibration-membrane structure of the first annular vibration membrane and the second annular vibration membrane, so that the vibration of the vibration system is more balanced, noise caused by unbalanced vibration is effectively reduced, and the tone quality is effectively improved. The three sound production devices are structurally characterized in that the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the second annular vibrating diaphragm is connected with the upper cover or the magnetic circuit system, the magnetic circuit system is fixed on the lower cover and positioned on the inner side of the second annular vibrating diaphragm, and the lower cover or the upper cover is connected with the magnetic circuit system through the upper cover. The different structures enable the height of the magnetic circuit system in the vibration direction of the vibration system not to be affected by the vibration system, and the magnetic circuit system is high in space utilization rate, so that the magnetic circuit is maximized, and the acoustic performance of the sound production device is excellent.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic perspective view of a first sound generation device according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of a first embodiment of a sound device according to the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic perspective view of an upper cover of a first embodiment of a sound device according to the present invention;

FIG. 5 is an exploded perspective view of a vibration system according to a first embodiment of the sound generating device of the present invention;

FIG. 6 is an exploded perspective view of another angle of the vibration system of the first embodiment of the sound device of the present invention;

fig. 7 is an exploded perspective view of a part of a magnetic circuit system according to a first embodiment of the sound generating device of the present invention;

FIG. 8 is a schematic view of the assembly of a part of the magnetic circuit system, the voice coil and the bobbin of the first embodiment of the sound generating device of the present invention

FIG. 9 is a cross-sectional view of a second embodiment of the sound device of the present invention;

FIG. 10 is a cross-sectional view of a third embodiment of the sound device of the present invention;

fig. 11 is a cross-sectional view of a fourth embodiment of the sound generation device of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

(embodiment one)

Referring to fig. 1-8, the present invention provides a sound generating device 100, which includes a frame 1, a vibration system 2 and a magnetic circuit system 3. Wherein the magnetic circuit system 3 has a magnetic gap 30.

The basin stand 1 comprises a lower cover 12 for accommodating the magnetic circuit system 3 and an upper cover 11 covering the lower cover 12.

The upper cover 11 includes an upper cover bottom wall 111, an upper cover outer wall 112 bent and extended from an outer peripheral side of the upper cover bottom wall 111, an upper cover inner wall 113 bent and extended from an inner peripheral side of the upper cover bottom wall 111, and a sound emitting hole 110 penetrating therethrough.

The lower cover 12 includes a lower cover bottom wall 121, a lower cover outer wall 122 bent and extended from an outer peripheral side of the lower cover bottom wall 121, and a lower cover inner wall 123 bent and extended from an inner peripheral side of the lower cover bottom wall 121. The sound emitting hole 110 is opened on the upper cover outer wall 112.

The upper cover outer wall 112 abuts the lower cover outer wall 122. In the present embodiment, the upper cover 11 has a ring shape. The lower cover 12 is annular. The upper cover 11 and the lower cover 12 together enclose a receiving space 10 and a sound-emitting cavity 20 which is annular and surrounds the receiving space 10.

The vibration system 2 is fixed on the basin stand 1.

The vibration system 2 comprises a vibrating diaphragm 21 fixed on the basin stand 1, a voice coil 22 inserted into the magnetic gap 30 to drive the vibrating diaphragm 21 to vibrate and sound, and a framework 23 respectively fixed on the vibrating diaphragm 21 and the voice coil 22.

The diaphragm 21 is located in the sound-emitting chamber 20. Specifically, the diaphragm 21 includes a first annular diaphragm 211, a second annular diaphragm 212, and an annular dome 213.

The outer side of the first ring-shaped diaphragm 211 is connected to the lower cover 12. Specifically, the outer side of the first annular diaphragm 211 abuts against the inner wall 123 of the lower cover.

The inner side of the first annular diaphragm 211 is connected to the outer side of the annular dome 213. The outer side of the second annular diaphragm 212 is connected to the inner side of the annular dome 213.

The inner side of the second annular diaphragm 212 is connected to the upper cover 11. Specifically, the inner side of the second annular diaphragm 212 abuts against the inner wall 113 of the upper cover. I.e. the diaphragm 21 and the upper cover 11 together enclose a front cavity 101. The sound emitting hole 110 communicates the front chamber 101 with the outside.

The first annular diaphragm 211, the second annular diaphragm 212, the annular dome 213, the upper cover 11 and the lower cover 12 may be integrally enclosed to form the accommodating space 10, so that the accommodating space 10 is a sealed space, and the sealing performance is ensured. The structure is beneficial to production and assembly.

Vibration system 2 is through setting up first annular vibrating diaphragm 211 with the double vibrating diaphragm structure of second annular vibrating diaphragm 212 can make vibration system 2's vibration is more balanced, effectively reduces because of the noise that the vibration unbalance produced, effectively promotes tone quality.

Specifically, the first annular diaphragm 211 includes a first hinge 2111, a first fixing portion 2112 located inside the first hinge 2111, and a second fixing portion 2113 located outside the first hinge 2111, where the first fixing portion 2112 is connected to the outside of the annular dome 213, and the second fixing portion 2113 is connected to the lower cover inner wall 123; the second annular diaphragm 212 includes a second folding ring 2121, a third fixing part 2122 located inside the second folding ring 2121, and a fourth fixing part 2123 located outside the second folding ring 2121, the third fixing part 2122 is connected to the upper cover inner wall 113, and the fourth fixing part 2123 is connected to the inner side of the annular dome 213.

The first folding ring 2111 is an arc-shaped structure with two ends respectively bent and protruded from the first fixing portion 2112 and the second fixing portion 2113 toward a direction away from the upper cover 11, and the second folding ring 2121 is an arc-shaped structure with two ends respectively bent and protruded from the third fixing portion 2122 and the fourth fixing portion 2123 toward a direction away from the upper cover 11.

The voice coil 22 is inserted into the magnetic gap 30. The voice coil 22 is used for driving the diaphragm 21 to vibrate and generate sound.

One end of the framework 23 is connected with the voice coil 22, and the other end is connected with the annular dome 213. The bobbin 23 is used to connect the voice coil 22 with the annular dome 213. Thereby realizing that the voice coil 22 drives the diaphragm 21 to vibrate and generate sound.

In the present embodiment, two skeletons 23 are provided. The two skeletons 23 extend from two opposite sides of the voice coil 22 to connect with the annular dome 213. The double-framework structure enables the voice coil 22 to be driven to have good vibration balance of the vibrating diaphragm 21, so that the vibration of the vibration system 2 is balanced, the improvement of tone quality is facilitated, and the acoustic effect of the sound production device 100 is good. It should be understood that the number of the bobbins 23 is not limited to two, and the number of the bobbins 23 may be one, three, four, or any other number, as long as the voice coil 22 can drive the first annular diaphragm 211 and the second annular diaphragm 212 to vibrate through the bobbins 23.

Each of the bobbins 23 includes a first extension 231, a second extension 232, and a third extension 233. The first extension 231 is disposed at an interval beside the voice coil 22. The second extension 232 and the third extension 233 are respectively connected to the outer side wall of the voice coil 22 from both ends of the first extension 231 in a direction perpendicular to the vibration direction of the voice coil 22.

In this embodiment, the inner wall 123 of the lower cover is provided with a relief hole 1230. Each of the bobbins 23 is connected to the voice coil 22 through the corresponding abdicating hole 1230. Specifically, the second extension 232 and the third extension 233 respectively pass through a corresponding one of the yielding holes 1230. The setting of the offset hole 1230 can effectively increase the vibration stroke of the voice coil 22, so as to increase the power of the sound generating device 100.

The first extension 231 is connected to the annular dome 213. The framework 23 is configured such that the first extension 231 and the annular dome 23 have a large connection area. The skeleton 23 with the connection of annular dome 213 is more firm, like this, works as voice coil 22 passes through annular dome 213 drives annular dome 213 high-frequency vibration or when vibrating by a wide margin, skeleton 23 with the fracture is difficult to take place in annular dome 213's junction.

Preferably, the vibration system 2 further includes elastic support assemblies 24 disposed opposite to and spaced apart from the vibrating diaphragm 21, one end of each elastic support assembly 24 is fixed to the lower cover 12, and the other end of each elastic support assembly 24 is fixed to one side of the framework 23 away from the upper cover 11, the elastic support assemblies 24 do not affect the magnetic gap in this structure, so as to optimize the design of the magnetic circuit system, so that the acoustic performance of the sound generating device 100 is better, and the arrangement of the elastic support assemblies 24 facilitates the improvement of the stability of the vibration system 2.

The number of the elastic supporting components 24 is two, and each elastic supporting component 24 is connected to one of the skeletons 23 corresponding to the elastic supporting component 24. The arrangement of the elastic support assembly 24 forms a symmetrical structure, so that the support effect of the voice coil 22 is more stable, and the effect of preventing the voice coil 22 from transversely swinging is better.

The magnetic circuit system 3 is fixed on the basin stand 1. The magnetic circuit system 3 is accommodated in the accommodating space 10. The magnetic circuit system 3 does not obstruct the voice coil 22 in the vibration direction of the voice coil 22, so that the effective vibration space of the voice coil 22 can be greatly increased, the power of the sound generating device 100 can be increased, and the optimal design of the sound generating device 100 is facilitated.

The magnetic circuit system 3 includes a magnetic conductive plate 31 fixed to the lower cover 12, a main magnetic steel 32 fixed to the magnetic conductive plate 31, and an auxiliary magnetic steel 33 surrounding the main magnetic steel 32 and spaced from each other to form the magnetic gap 30, the auxiliary magnetic steel 33 is provided with an avoidance notch 330, and the bobbin 23 passes through the avoidance notch 330 and extends into the magnetic gap 30 to be connected with the voice coil 22. Specifically, the bobbin 23 sequentially passes through the avoiding hole 1230 and the avoiding notch 330, extends into the magnetic gap 30, and is connected to the voice coil 22.

In this embodiment, the number of the auxiliary magnetic steels 33 is four, and the avoidance notch 330 is formed between two adjacent auxiliary magnetic steels 33. It is understood that the number of the secondary magnetic steels 33 is not limited to four, for example, two secondary magnetic steels 33 are provided, and it is also possible that two secondary magnetic steels 33 are respectively provided on two opposite sides of the primary magnetic steel 32.

The magnetic conductive plate 31 is fixed to the lower cover 12. The magnetic conductive plate 31 is embedded in the second through hole 120. Due to the limitation of the size of the sound-generating device 100, the distance from the lower cover 12 to the annular dome 213 is limited, and the second through hole 120 is formed in the lower cover 12, so that the magnetic conductive plate 31 is embedded in the through hole 113, and the distance from the lower cover 12 to the annular dome 213 occupied by the magnetic conductive plate 31 can be reduced, thereby increasing the effective vibration space of the voice coil 22 and improving the power of the sound-generating device 100.

(second embodiment)

Referring to fig. 9, the present invention provides a sound producing device 200. The sound device 200 of the second embodiment has substantially the same structure as the sound device 100, and different structures and different connection modes are listed below.

The sound production device 200 comprises a basin frame 1a, a vibration system 2a and a magnetic circuit system 3a, wherein the vibration system 2a is respectively fixed on the basin frame 1a, and the magnetic circuit system 3a drives the vibration system 2a to vibrate and produce sound. The magnetic circuit system 3a has a magnetic gap 30.

In the present embodiment, the frame 1a includes a lower cover 12a for housing the magnetic circuit system 3a and an upper cover 11a fixed to the magnetic circuit system 3 a.

In this embodiment, the vibration system 2a includes a ring-shaped diaphragm 21a, a voice coil 22a inserted into the magnetic gap 30a to drive the diaphragm 21a to vibrate and generate sound, and a bobbin 23a connecting the diaphragm 21a and the voice coil 22a respectively; the vibrating diaphragm 21a includes a first annular vibrating diaphragm 211a, a second annular vibrating diaphragm 212a and an annular dome 213a, the outside of the first annular vibrating diaphragm 211a with the lower cover 12a is connected, the inside of the first annular vibrating diaphragm 211a with the outside of the annular dome 213a is connected, the outside of the second annular vibrating diaphragm 212a with the inside of the annular dome 213a is connected, the inside of the second annular vibrating diaphragm 212a with the upper cover 11a is connected, the skeleton 23a with the annular dome 213a is connected.

The magnetic circuit system 3a includes a magnetic conductive plate 31a fixed to the lower cover 12a, a main magnetic steel 32a fixed to the magnetic conductive plate 31a, a sub magnetic steel 33a surrounding the main magnetic steel 32a and forming the magnetic gap 30a at intervals, and a pole core 34a fixed to the main magnetic steel 32a and the sub magnetic steel 33a and disposed opposite to the magnetic conductive plate 31 a.

In the present embodiment, the pole piece 34a is fixed to the upper cover 11 a. The structure is simple and easy to produce and assemble, and it is preferable that the distance from the magnetic conductive plate 31a to the pole core 34a of the magnetic circuit system 3a is approximately equal to the distance from the lower cover 12a to the upper cover 11 a. This structure maximizes the heights of the main magnetic steel 32a and the sub magnetic steel 33a in the vibration direction of the vibration system 2a, so that the magnetic gap 30a is made deep and the effective vibration space of the voice coil 22a is increased. Therefore, the height of the magnetic circuit system 3a in the vibration direction of the vibration system 2a is not affected by the vibration system 2a, and the space utilization rate of the magnetic circuit system 3a is high, so that the magnetic circuit is maximized, and the acoustic performance of the sounder device 200 is excellent.

(third embodiment)

Referring to fig. 10, the present invention provides a sound generating device 300. The sound device 300 of the third embodiment has substantially the same structure as the sound device 100, and different structures and different connection modes are listed below.

The sounding device 300 comprises a basin frame 1b, a vibration system 2b and a magnetic circuit system 3b, wherein the vibration system 2b is respectively fixed on the basin frame 1b, the magnetic circuit system 3b drives the vibration system 2b to vibrate and sound, and the magnetic circuit system 3b is provided with a magnetic gap 30 b.

In the present embodiment, the frame 1b includes a lower cover 12b for housing the magnetic circuit system 3b and an upper cover 11b provided opposite to the lower cover 12 b.

The vibration system 2b comprises an annular vibrating diaphragm 21b, a voice coil 22b inserted into the magnetic gap 30b to drive the vibrating diaphragm 21b to vibrate and generate sound, and a framework 23b respectively connected with the vibrating diaphragm 21b and the voice coil 22 b; the vibrating diaphragm 21b includes a first annular vibrating diaphragm 211b, a second annular vibrating diaphragm 212b and an annular dome 213b, the outer side of the first annular vibrating diaphragm 211b is connected to the lower cover 12b, the inner side of the first annular vibrating diaphragm 211b is connected to the outer side of the annular dome 213b, the outer side of the second annular vibrating diaphragm 212b is connected to the inner side of the annular dome 213b, the inner side of the second annular vibrating diaphragm 212b is connected to the magnetic circuit system 3b, and the skeleton 23b is connected to the annular dome 213 b;

the magnetic circuit system 3b includes a magnetic conductive plate 31b fixed to the lower cover 12b, a main magnetic steel 32b fixed to the magnetic conductive plate 31b, a sub magnetic steel 33b surrounding the main magnetic steel 32b and spaced from each other to form the magnetic gap 30b, and a pole core 34b fixed to the main magnetic steel 32b and the sub magnetic steel 33b and disposed opposite to the magnetic conductive plate 31 b.

The pole piece 34b is fixed to the upper cover 11 b. This structure is simple and easy to produce and assemble, and it is preferable that the distance from the magnetic conductive plate 31b to the pole core 34b of the magnetic circuit system 3b is substantially equal to the distance from the lower cover 12b to the upper cover 11 b. This structure maximizes the heights of the main magnetic steel 32b and the sub magnetic steel 33b in the vibration direction of the vibration system 2b, so that the magnetic gap 30b is made deep, and the effective vibration space of the voice coil 22b is increased. Therefore, the height of the magnetic circuit system 3b in the vibration direction of the vibration system 2b is not affected by the vibration system 2b, and the space utilization rate of the magnetic circuit system 3a is high, so that the magnetic circuit is maximized, and the acoustic performance of the sounder device 300 is excellent.

The inner side of the second annular diaphragm 212b is connected to the magnetic circuit system 3 b. In the present embodiment, the inner side of the second annular diaphragm 212b is interposed between the sub magnetic steel 33b and the pole core 34 b. Without being limited thereto, the second annular diaphragm 212b may be separately fixed to the pole piece 34b or the secondary magnetic steel 33 b. The structure ensures that the vibrating diaphragm 21b of the sounding device 300 does not need to be fixed on the lower cover 12b, so that the magnetic circuit space is larger, the space utilization rate of the magnetic circuit system 3b is high, the magnetic circuit is maximized, and the acoustic performance of the sounding device 300 is excellent.

(example four)

Referring to fig. 11, the present invention provides a sound generating device 300. The sound device 400 of the fourth embodiment has substantially the same structure as the sound device 100, and different structures and different connection modes are listed below.

The sound production device 400 comprises a basin frame 1c, a vibration system 2c and a magnetic circuit system 3c, wherein the vibration system 2c is fixed on the basin frame 1c, the magnetic circuit system 3c drives the vibration system 2c to vibrate and produce sound, and a magnetic gap 30c is formed in the magnetic circuit system 3 c.

In this embodiment, the basin stand 1c further includes an upper cover 11c covering the lower cover 12c, and the diaphragm 21c and the upper cover 11c together enclose a front cavity 101 c. The upper cover 11c is provided with a sound hole 110c penetrating therethrough, and the sound hole 110c communicates the front chamber 101c with the outside.

In the present embodiment, the upper cover 11c is annular, the lower cover 12c is annular, the upper cover 11c and the lower cover 12c together enclose an accommodating space 10c and a sounding cavity 20c that is annular and surrounds the accommodating space 10c, the diaphragm 21c is located in the sounding cavity 20c, and the magnetic circuit system 3c is accommodated in the accommodating space 10 c.

In this embodiment, the vibration system 2c includes a ring-shaped diaphragm 21c, a voice coil 22c inserted into the magnetic gap 30c to drive the diaphragm 21c to vibrate and generate sound, and a bobbin 23c connecting the diaphragm 21c and the voice coil 22c, respectively; the diaphragm 21c includes a first annular diaphragm 211c, a second annular diaphragm 212c and an annular dome 213c, the outer side of the first annular diaphragm 211c is connected to the lower cover 12c, the inner side of the first annular diaphragm 211c is connected to the outer side of the annular dome 213c, the outer side of the second annular diaphragm 212c is connected to the inner side of the annular dome 213c, the inner side of the second annular diaphragm 212c is connected to the magnetic circuit system 3c, and the skeleton 23c is connected to the annular dome 213 c;

in the present embodiment, the magnetic circuit system 3c includes a magnetic conductive plate 31c fixed to the lower cover 12c, a main magnetic steel 32c fixed to the magnetic conductive plate 31c, a sub magnetic steel 33c surrounding the main magnetic steel 32c and forming the magnetic gap 30c at an interval, and a pole core 34c fixed to both the main magnetic steel 32c and the sub magnetic steel 33c and disposed opposite to the magnetic conductive plate 31 c.

In the present embodiment, the inner side of the second annular diaphragm 212c is connected to the magnetic circuit system 3 c. In the present embodiment, the inner side of the second annular diaphragm 212c is interposed between the sub magnetic steel 33c and the pole core 34 c. Without being limited thereto, the second annular diaphragm 212c may be separately fixed to the pole piece 34c or the sub-magnetic steel 33 c. The structure ensures that the vibrating diaphragm 21c of the sounding device 400 is not required to be fixed on the lower cover 12c, so that the magnetic circuit space is larger, the space utilization rate of the magnetic circuit system 3c is high, the magnetic circuit is maximized, and the acoustic performance of the sounding device 400 is excellent.

Compared with the prior art, the sound production device is provided with the vibration system and comprises the double-vibration-membrane structure of the first annular vibration membrane and the second annular vibration membrane, so that the vibration of the vibration system is more balanced, noise caused by unbalanced vibration is effectively reduced, and the tone quality is effectively improved. The three sound production devices are structurally characterized in that the outer side of the first annular vibrating diaphragm is connected with the lower cover, the inner side of the second annular vibrating diaphragm is connected with the upper cover or the magnetic circuit system, the magnetic circuit system is fixed on the lower cover and positioned on the inner side of the second annular vibrating diaphragm, and the lower cover or the upper cover is connected with the magnetic circuit system through the upper cover. The different structures enable the height of the magnetic circuit system in the vibration direction of the vibration system not to be affected by the vibration system, and the magnetic circuit system is high in space utilization rate, so that the magnetic circuit is maximized, and the acoustic performance of the sound production device is excellent.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.