阅读说明：本技术 发声装置 (Sound producing device ) 是由 金鑫 张帆 钟志威 于 2020-12-18 设计创作，主要内容包括：本发明提供一种发声装置,包括盆架以及固接于盆架的振动系统和磁路系统,振动系统包括振膜和驱动振膜振动的音圈,振膜包括在音圈的振动方向上与音圈层叠设置的球顶和位于球顶外周且与球顶间隔设置的骨架,球顶包括主体部和自主体部朝向音圈延伸且与音圈连接的限位部,主体部具有背向音圈的外表面和朝向音圈的内表面,骨架包括第一连接部和弯折连接于第一连接部的第二连接部,第一连接部具有在外表面朝向内表面的第一方向上相背设置的第一表面和第二表面,第一表面与外表面齐平,主体部与第一连接部之间具有间隙,间隙填充有胶水层以连接球顶和第一连接部并密封间隙。本发明的发声装置可以减小发声装置的厚度。(The invention provides a sound generating device which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixedly connected to the basin frame, the vibration system comprises a vibration diaphragm and a voice coil for driving the vibration diaphragm to vibrate, the vibration diaphragm comprises a ball top and a framework, the ball top is stacked with the voice coil in the vibration direction of the voice coil, the framework is positioned on the periphery of the ball top and is arranged at intervals with the ball top, the ball top comprises a main body part and a limiting part, the limiting part extends from the main body part to the voice coil and is connected with the voice coil, the main body part is provided with an outer surface facing away from the voice coil and an inner surface facing the voice coil, the framework comprises a first connecting part and a second connecting part connected with the first connecting part in a bending mode, the first connecting part is provided with a first surface and a second surface which are arranged in a mode that the outer surface faces the first direction of. The sound generating device can reduce the thickness of the sound generating device.)

1. A sound production device comprises a basin frame and a vibration system and a magnetic circuit system which are fixedly connected with the basin frame, wherein the vibration system comprises a vibrating diaphragm and a driving voice coil, the voice coil vibrates, the vibrating diaphragm comprises a main body part and a limiting part, the main body part faces the main body part, the voice coil extends and is connected with the voice coil, the ball top periphery is located on the ball top, the ball top periphery is arranged on the framework, the ball top is arranged at intervals on the ball top, the ball top comprises a first connecting part and a second connecting part, the outer surface faces away from the voice coil, the inner surface faces towards the voice coil, the framework comprises a first connecting part and a second connecting part, the second connecting part is connected with the first connecting part in a bending mode, the first surface faces towards the first direction of the inner surface, the first surface is arranged opposite to the second surface, and the first surface is flush with the outer surface, a gap is formed between the main body part and the first connecting part, and a glue layer is filled in the gap to connect the ball top and the first connecting part and seal the gap.

2. The sound generating apparatus of claim 1, wherein: the limiting part comprises a first bending sub-part and a second bending sub-part, wherein the first bending sub-part extends from the main body part towards the voice coil in a bending mode, the second bending sub-part is connected with the voice coil, and the second bending sub-part is connected with the periphery of the first bending sub-part in a bending mode along the first direction.

3. The sound generating apparatus of claim 2, wherein: the first bending sub-portion extends from the main body portion toward the voice coil and bends along the first direction.

4. The sound generating apparatus of claim 3, wherein: the first bending sub-portion is bent from the main body portion to the voice coil and connected to the periphery of the main body portion along the first direction.

5. The sound generating apparatus of claim 1, wherein the diaphragm comprises a main diaphragm located at the periphery of the dome, and wherein: the main sound membrane comprises a first fixing portion connected with the second connecting portion, a second fixing portion connected with the basin frame and a first folding ring connected with the first fixing portion and the second fixing portion, the first folding ring is of an annular structure with two ends respectively extending from the first fixing portion and the second fixing portion towards the first direction in a bending mode, the first fixing portion is provided with a third surface and a fourth surface which are arranged in a back-to-back mode, and the third surface is flush with the first surface.

6. The sound generating apparatus of claim 5, wherein: the second connecting portion comprises a first sub-connecting portion, a second sub-connecting portion and two oppositely arranged third sub-connecting portions, the second sub-connecting portion faces the first fixing portion and is connected to the periphery of the first sub-connecting portion in a bending mode along the second direction perpendicular to the first direction, the two third sub-connecting portions are formed by bending the periphery of the second sub-connecting portion towards the first direction respectively, and the second sub-connecting portion is arranged on the fourth surface.

7. The sound generating apparatus of claim 6, wherein: the second fixed part includes first sub-fixed part and the sub-fixed part of second, the sub-fixed part of second is followed first direction buckle connect in first sub-fixed part, the basin frame is including surrounding in skeleton periphery and with the annular side wall that the skeleton interval set up, first ring suspension in annular side wall with in the clearance that the skeleton formed, the annular side wall has the top surface and the side that extends towards first direction from the outer peripheral edges of top surface, first sub-fixed part with the top surface laminating, the sub-fixed part of second with the side laminating.

8. The sound generating apparatus of claim 7, wherein: the vibration system further comprises a first flexible circuit board and a second flexible circuit board, the first flexible circuit board is connected with one of the third sub-connecting portions, and the second flexible circuit board is connected with the other third sub-connecting portion.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of sound-electricity conversion, in particular to a sound production device.

[ background of the invention ]

Along with the development of the field of sound-electricity conversion and the improvement of user demands, in order to realize the pursuit of the sound generating device for truly restoring sound source signals, in the related art, the sound generating device comprises a vibration system, a magnetic circuit system for driving the vibration system to vibrate and generate sound, and a basin frame for mounting the vibration system and the magnetic circuit system, wherein the vibration system comprises a vibration film and a voice coil for driving the vibration film to vibrate, and the vibration film comprises a ball top and a framework for supporting the ball top.

However, in the conventional sound generating device, the thickness of the laminated portion of the frame and the dome is large because the frame and the dome are laminated. Therefore, it is necessary to provide a sound generating device to solve the above technical problems.

[ summary of the invention ]

The invention aims to provide a sound generating device, which can reduce the thickness of the sound generating device.

The technical scheme of the invention is as follows: including basin frame and rigid coupling in the vibration system and the magnetic circuit of basin frame, vibration system includes vibrating diaphragm and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration, the vibrating diaphragm include in the vibration direction of voice coil loudspeaker voice coil with the ball top that the voice coil loudspeaker voice coil range upon range of setting up with be located ball top periphery and with the skeleton that the ball top interval set up, the ball top includes the main part and from the main part towards the voice coil loudspeaker voice coil extends and with the spacing portion that the voice coil loudspeaker voice coil is connected, the main part has the surface that dorsad the voice coil loudspeaker voice coil and the internal surface towards the voice coil loudspeaker voice coil, the skeleton include first connecting portion and buckle connection in the second connecting portion of first connecting portion, first connecting portion have surface and the second surface that sets up back to the back in the first direction of surface orientation, first surface with the surface flushes, the main part with the clearance has between the first connecting portion, the gap is filled with a glue layer to connect the dome and the first connection and seal the gap.

Preferably, the limiting portion includes a first bending sub portion extending from the main body portion toward the voice coil, and a second bending sub portion connected to the voice coil, and the second bending sub portion is connected to a periphery of the first bending sub portion along a direction perpendicular to the first direction.

Preferably, the first bending sub-portion extends from the main body portion toward the voice coil and bends in the first direction.

Preferably, the first bending sub-portion is bent from the main body portion toward the voice coil and connected to a peripheral edge of the main body portion along the first direction.

Preferably, a gap is provided between the main body portion and the first connection portion, and the gap is filled with a glue layer to connect the dome and the first connection portion and seal the gap.

Preferably, the vibrating diaphragm is including being located the main sound membrane of ball top periphery, main sound membrane include with the first fixed part that the second connecting portion are connected and with the second fixed part that the basin frame is connected and connect in first fixed part with the first ring that rolls over of second fixed part, first ring that rolls over is followed respectively for both ends first fixed part with the second fixed part court the annular structure of the crooked setting of first direction, first fixed part has third surface and the fourth surface that sets up back on the back mutually, the third surface with the first surface flushes.

Preferably, the second connecting portion includes a first sub-connecting portion, a second sub-connecting portion and two oppositely disposed third sub-connecting portions, the second sub-connecting portion is bent toward the first fixing portion and along a second direction perpendicular to the first direction, and is connected to a periphery of the first sub-connecting portion, the two third sub-connecting portions are bent from a partial periphery of the second sub-connecting portion toward the first direction, and the second sub-connecting portion is disposed on the fourth surface.

Preferably, the second fixed part includes first sub-fixed part and the sub-fixed part of second, the sub-fixed part of second is followed first direction buckle connect in first sub-fixed part, the basin frame is including surrounding around skeleton periphery and with the annular side wall that the skeleton interval set up, first hem ring suspension in annular side wall with in the clearance that the skeleton formed, the annular side wall has the top surface and from the side of the outer peripheral edges of top surface towards first direction extension, first sub-fixed part with the top surface laminating, the sub-fixed part of second with the side laminating.

Preferably, the vibration system further includes a first flexible circuit board and a second flexible circuit board, the first flexible circuit board is connected to one of the third sub-connection portions, and the second flexible circuit board is connected to the other of the third sub-connection portions.

The invention has the beneficial effects that: the skeleton ring is arranged on the periphery of the dome and is arranged at an interval with the dome, the first surface of the skeleton is kept flush with the outer surface of the dome, the thickness of the sounding device can be reduced, the requirement of the sounding device for lightness and thinness is met, the dome is provided with the limiting part, the height space can be fully utilized by changing the height parameter of the limiting part of the dome in the first direction, and therefore the height of a magnetic circuit and the electromagnetic conversion factor of the magnetic circuit can be improved.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a sound generating device provided by the present invention;

FIG. 2 is an exploded view of the sound generator of FIG. 1;

FIG. 3 is a cross-sectional view of the sound generator of FIG. 1 taken along the line A-A;

FIG. 4 is a cross-sectional view of the sound generator of FIG. 1 taken along the line B-B;

FIG. 5 is a partial view of the structure of the dome and skeleton of the sound generating device of FIG. 4;

fig. 6 is a schematic perspective view of a skeleton of the sound generating device shown in fig. 1;

FIG. 7 is a schematic perspective view of a dome of the sound generating device shown in FIG. 1;

fig. 8 is a schematic perspective view of a main diaphragm of the sound generating device shown in fig. 1.

[ detailed description ] embodiments

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of a portion of the invention and not all 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.

Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a sound generating device provided by the present invention; fig. 2 is an exploded view of the sound generating device shown in fig. 1, fig. 3 is a sectional view of the sound generating device shown in fig. 1 taken along a-a direction, fig. 4 is a sectional view of the sound generating device shown in fig. 1 taken along a-B direction, and fig. 5 is a partial view of the structure of a dome and a skeleton of the sound generating device shown in fig. 4.

The invention provides a sound production device 100 which comprises a fixing system 1, a vibration system 2 and a magnetic circuit system 3, wherein the fixing system 1 can provide support for the vibration system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 can drive the vibration system 2 to vibrate and produce sound.

The vibration system 2 includes a diaphragm 21 and a voice coil 22 that drives the diaphragm 21 to vibrate, and the diaphragm 21 includes a dome 211 and a bobbin 212 that are stacked with the voice coil 22 in a vibration direction of the voice coil 22. Specifically, referring to fig. 2 and 7, fig. 7 is a schematic perspective view of a dome of the sound generating device shown in fig. 1. The dome 211 includes a main body portion 2111 and a limiting portion 2112 extending from the main body portion 2111 toward the voice coil 22 and connected to the voice coil 22, wherein the main body portion 2111 may have a plate-shaped structure, and in some specific embodiments, the main body portion 2111 may have a rectangular plate-shaped structure or a rounded rectangular plate-shaped structure. The body portion 2111 has an outer surface 2111a facing away from the voice coil 22 and an inner surface 2111b facing toward the voice coil 22. The stopper portion 2112 includes a first bent sub-portion 2112a bent and extended from the main body portion 2111 toward the voice coil 22, and a second bent sub-portion 2112b connected to the voice coil 22, and the second bent sub-portion 2112b is bent and connected to the periphery of the first bent sub-portion 2112a in the first direction.

The connection between the main body portion 2111 and the first bending sub-portion 2112a is not limited to this, and the first bending sub-portion 2112a may extend from the main body portion 2111 toward the voice coil 22 and be bent in the first direction, or the first bending sub-portion 2112a may be connected to the periphery of the main body portion 2111 from the main body portion 2111 toward the voice coil 22 and be bent in the first direction.

The relative bending direction of the first bending sub-portion 2112a and the second bending sub-portion 2112b is not limited to the first direction, and the second bending sub-portion 2112b may be bent and connected to the periphery of the first bending sub-portion 2112a along a direction having an angle with the first direction, and the angle may be one of zero and less than ninety degrees.

It should be noted that the structure of the limiting portion is not limited to this, for example, the limiting portion 2112 may include only the first bending sub-portion 2112a, or may include a plurality of first bending sub-portions 2112a and a plurality of second bending sub-portions 2112b which are stacked together.

Specifically, referring to fig. 2 and 6, fig. 6 is a schematic perspective view of a skeleton of the sound generating device shown in fig. 1. The frame 212 is provided with a through hole 2123, a first connecting portion 2121 surrounding the through hole 2123, and a second connecting portion 2122 connected to the first connecting portion 2121 in a bent manner, the first connecting portion 2121 has a first surface 2121a and a second surface 2121b opposite to each other in a first direction from the outer surface 2111a to the inner surface 2111b, and the first surface 2121a is flush with the outer surface 2111a of the dome 211. The second connector 2122 includes a first sub-connector 2122a, a second sub-connector 2122b, and a third sub-connector 2122 c. The first sub-connecting portion 2122a is connected to the first connecting portion 2121 by being bent in a first direction, the second sub-connecting portion 2122b is connected to the periphery of the first sub-connecting portion 2121 by being bent in a second direction perpendicular to the first direction toward the first fixing portion 2132, the third sub-connecting portion 2122c is bent in the first direction on a part of the periphery of the second sub-connecting portion 2122b to form a third sub-connecting portion 2122c and a fourth sub-connecting portion 2122d, the third sub-connecting portion 2122c and the fourth sub-connecting portion 2122d are disposed opposite to each other, the second sub-connecting portion 2122b is protruded from the edge of the first sub-connecting portion 2122a in the first direction, the third sub-connecting portion 2122c is protruded from a part of the periphery of the second sub-connecting portion 2122b in the first direction, and the fourth sub-connecting portion 2122d is protruded from a part of the periphery of the second sub-connecting portion 2122 b.

According to the invention, the framework 212 is arranged around the periphery of the dome 211 at an interval with the dome 211, and the first surface 2121a of the framework 212 is kept flush with the outer surface 2111a of the dome 211, so that the thickness of the sound generating device 100 can be reduced, the requirement of the sound generating device 100 on lightness and thinness can be met, the dome 211 is provided with the limiting part 2112, the height space can be fully utilized by changing the height parameter of the limiting part 2112 of the dome 211 in the first direction, and the magnetic circuit height and the magnetic circuit electromagnetic conversion factor can be improved.

After the dome 211 is connected to the frame 212, the main body portion 2111 of the dome 211 is disposed in the through hole 2123 of the frame 212, and a gap is formed between the main body portion 2111 of the dome 211 and the first connection portion 2121 of the frame 212, and the gap is filled with the glue layer 4 to connect the dome 211 and the first connection portion 2121 of the dome 211, so that the diaphragm 21 may form a sealed space, and the sealing performance is ensured. So that the whole diaphragm 21 and the frame 12 can enclose a sealed space to realize the sealing of the sound generating device 100. Through this glue layer 4, skeleton 212 undertakes partial dome 211 function, and when voice coil 22 vibrated, dome 211 and skeleton 212 can vibrate along with voice coil 22 is synchronous, has strengthened vibration system 2's vocal, and the effectual noise that reduces because of the unbalanced vibration produces.

For example, glue may be injected into the gap between the main body portion 2111 of the dome 211 and the first connecting portion 2121 of the skeleton 212, and the glue may be solidified to form the glue layer 4.

Specifically, referring to fig. 2 and 8, fig. 8 is a schematic perspective view of a main diaphragm of the sound generating device shown in fig. 1. The diaphragm 21 includes a main diaphragm 213 disposed on the outer periphery of the dome 211, the main diaphragm 213 includes a first folding ring 2131 and a second fixing portion 2133 connected to the first fixing portion 2132, and the first folding ring 2131 is an annular structure with two ends respectively bent and protruded from the first fixing portion 2132 and the second fixing portion 2133 in the first direction. The first fixing portion 2132 has a third surface 2132a and a fourth surface 2132b which are opposite to each other, and the third surface 2132a is flush with the first surface 2121a of the framework 212. The second fixing portion 2133 includes a first sub-fixing portion 2133a and a second sub-fixing portion 2133b, the second sub-fixing portion 2133b is bent along the first direction and connected to the first sub-fixing portion 2133a, and the second sub-fixing portion 2133b is protruded along the first direction and disposed on the first fixing portion 2132.

The vibration system 2 further includes an auxiliary sound diaphragm 24, the auxiliary sound diaphragm 24 includes a first sound diaphragm 24a and a second sound diaphragm 24b arranged at intervals, the first sound diaphragm 24a includes a third fixing portion 2142a, a second folding ring 2141a and a fourth fixing portion 2143a connected in sequence, the second folding ring 2141a is a ring structure with two ends respectively bent and protruded from the third fixing portion 2142a and the fourth fixing portion 2143a toward the first direction, the second sound diaphragm 24b includes a fifth fixing portion 2142b, a third folding ring 2141b and a sixth fixing portion 2143b connected in sequence, and the second folding ring 2141b is a ring structure with two ends respectively bent and protruded from the fifth fixing portion 2142b and the sixth fixing portion 2143b toward the first direction.

As shown in fig. 3, 4 and 5, the third surface 2132a of the first fixing portion 2132 and the first surface 2121a of the bobbin 212 are flush with the outer surface 2111a of the dome 211, the bobbin 212 is connected to the dome 211 through the filler 4, the bobbin 212 is connected to the main diaphragm 213 through the second sub-connecting portion 2122b, and when the voice coil 22 vibrates, the bobbin 212, the dome 211 and the main diaphragm 213 vibrate together.

The fixing system 1 comprises a basin frame 12 and a bottom plate 13, the basin frame 12 comprises an annular side wall 121 which surrounds the periphery of the framework 212 and is arranged at a distance from the framework 212, a first folding ring 2131 is suspended in a gap formed between the annular side wall 121 and the framework 212, and the annular side wall 121 is provided with a top surface 121a and a side surface 121b which extends from the outer periphery of the top surface in a first direction. The top surface 121a is attached to the inner side of the first sub-fixing portion 2133a, and the side surface 121b is attached to the inner side of the second sub-fixing portion 2133 b.

The vibration system 2 further includes a flexible circuit board 23, and the flexible circuit board 23 is disposed on the upper surface of the auxiliary sound diaphragm 24 adjacent to the main sound diaphragm 213. The flexible circuit board 23 includes a first flexible circuit board 23a and a second flexible circuit board 23b which are oppositely arranged, the first flexible circuit board 23a includes a pad 231a, a first terminal 232 and a second terminal 233, the second flexible circuit board 23b includes a pad 231b, and the pad 231a and the pad 231b can provide a platform for connecting the flexible circuit board 23 with other devices. The flexible circuit board 23 includes a seventh surface 2312 and an eighth surface 2313 which are opposite to each other, the seventh surface 2312 is attached to the lower surface of the annular side wall 121 close to the auxiliary sound film 24, the first flexible circuit board 23a is connected to the third sub-connecting portion 2122c, the second flexible circuit board 23b is connected to the fourth sub-connecting portion 2122d, the first sound film 24a is connected to one side of the first flexible circuit board 23a far away from the framework 212, and the second sound film 24b is connected to one side of the second flexible circuit board 23b far away from the framework 212. By this connection, when the voice coil 22 vibrates, the main diaphragm 213 and the auxiliary diaphragm 24 are synchronized to vibrate, and the vibration intensity of the sound generating device 100 is enhanced.

The vibration system 2 further includes a voice coil 22, the voice coil 22 has a lead 221 and a voice coil body 222, and the lead 221 is electrically connected to the pad 231a, so that the voice coil 22 is electrically connected to the first flexible circuit board 23. The voice coil body 222 is a closed ring-shaped structure having an upper end surface 2221 and a lower end surface 2222 that are opposite to each other, and the voice coil 22 may have two leads, including a first lead 2211 and a second lead 2212, where the first lead 2211 may be led out from the upper end surface 2221 of the voice coil 22 to the pad 231 and electrically connected to the first terminal 232 of the pad 231, and the second lead 2212 may be led out from the lower end surface 2222 of the voice coil 22 to the pad 231 and electrically connected to the second terminal 233 of the pad 231.

The magnetic circuit system 3 may include a yoke 33, a main magnetic steel 31, a first sub magnetic steel 321, a second sub magnetic steel 322, a third sub magnetic steel 323, a fourth sub magnetic steel 324, and a pole core 34. The yoke 33 surrounds the voice coil 2223, and the yoke 33 and the diaphragm 25 are spaced apart from each other.

The main magnetic steel 31, the first sub magnetic steel 321, the second sub magnetic steel 322, the third sub magnetic steel 323 and the fourth sub magnetic steel 324 are all fixedly arranged on one side of the magnetic yoke 33, which faces away from the sound diaphragm 25, the first sub magnetic steel 321, the second sub magnetic steel 322, the third sub magnetic steel 323 and the fourth sub magnetic steel 324 are arranged around the periphery of the main magnetic steel 31, a magnetic gap 35 is formed between each of the first sub magnetic steel 321, the second sub magnetic steel 322 and the third sub magnetic steel 323 and the main magnetic steel 31, and the voice coil 2223 is suspended in the magnetic gap 35. The pole piece 34 is disposed in the through hole of the voice coil 2223, and the pole piece 34 is disposed adjacent to the main magnet 31, and the pole piece 34 guides the magnetic field generated by the main magnet 31 to the voice coil 2223.

The main magnet 31 may be of a regular structure, for example, the main magnet 31 may be of a rectangular parallelepiped structure, the first sub-magnet 321 and the first side of the main magnet 31 are spaced apart from each other to form a first gap, the second sub-magnet 322 and the second side of the main magnet 31 are spaced apart from each other to form a second gap, the third sub-magnet 323 and the third side of the main magnet 31 are spaced apart from each other to form a third gap, the fourth sub-magnet 324 and the fourth side of the main magnet 31 are spaced apart from each other to form a fourth gap, and the fourth gap, the third gap, the second gap and the first gap communicate with each other to form the magnetic gap 35. Wherein, the first side, the second side, the third side and the fourth side of the main magnetic steel 31 are connected in sequence. The structure of first auxiliary magnetic steel 321 and the structure of second auxiliary magnetic steel 322 may be different, for example, first auxiliary magnetic steel 321 may be a regular rectangular parallelepiped structure, and second auxiliary magnetic steel 322 may include a first portion and a second portion, the second portion being disposed on the side of the first portion. The third sub magnetic steel 323 may have the same structure as the first sub magnetic steel 321, and the fourth sub magnetic steel 324 may have the same structure as the second sub magnetic steel 322. In other embodiments, the structures of the first secondary magnetic steel 321, the second secondary magnetic steel 322, the third secondary magnetic steel 323, and the fourth secondary magnetic steel 324 may be the same.

It should be noted that the structure of the main magnet 31 is not limited to this, and for example, the main magnet 31 may have another regular structure, or the main magnet 31 may have an irregular structure.

In addition, the bottom plate 13 is used to fix the magnetic circuit system 3. Specifically, the bottom plate 13 is used for bearing the main magnetic steel 31, a first sub magnetic steel 321, a second sub magnetic steel 322, a third sub magnetic steel 323, and a fourth sub magnetic steel 324.

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.