CN212936185U

CN212936185U - Sound production device and electronic equipment with same

Info

Publication number: CN212936185U
Application number: CN202021335802.5U
Authority: CN
Inventors: 肖波; 令狐荣林; 孔晨亮; 章统
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-04-09
Anticipated expiration: 2030-07-08
Also published as: WO2022006988A1

Abstract

The utility model provides a sound production device and an electronic device with the same, wherein the sound production device comprises a basin frame, a vibration system and a magnetic circuit system, the magnetic circuit system drives the vibration system to vibrate and produce sound, and the vibration system comprises a vibration diaphragm and a voice coil which are fixed on the basin frame; the vibrating diaphragm comprises a vibrating part and a fixing part, the vibrating part is suspended on the basin frame, the fixing part extends from the edge of the vibrating part and surrounds the vibrating part, the basin frame comprises a top surface arranged opposite to the vibrating diaphragm and an outer side wall extending from the edge of the top surface towards the direction far away from the vibrating diaphragm, and the fixing part is opposite to and fixed with the top surface; the vibrating diaphragm also comprises an annular supporting piece which is wound on the periphery of the outer side wall and fixed on the side of the fixing part far away from the vibrating part, the annular supporting piece is connected to one side of the fixing part far away from the vibrating part and integrated with the fixing part in a double-color injection molding mode, and the hardness of the fixing part is greater than that of the vibrating part and is less than that of the annular supporting piece. The technical scheme of the utility model can solve the problem that can not compromise waterproof performance and produce the product performance among the prior art effectively.

Description

Sound production device and electronic equipment with same

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to a sounding device and have its electronic equipment.

[ background of the invention ]

With the coming of the mobile internet era, the number of portable intelligent mobile devices is increasing continuously, and the portable intelligent mobile devices enable users to obtain a large amount of information anywhere through the interaction of information such as characters, images, sounds and the like, so that the life of the users is greatly facilitated. The sounding device is used as a main device for transmitting sound information and forms an important component of the portable intelligent mobile device.

The prior art sound production device comprises a vibrating diaphragm and a basin frame, wherein the basin frame is used for accommodating and fixing parts required by sound production, and the vibrating diaphragm is arranged on the basin frame and can vibrate to produce sound under the excitation of external conditions. For making the sound production device possess waterproof performance, prior art's sound production device sets up seal structure on the basin frame outer wall, but seal structure and vibrating diaphragm integrated into one piece for the sound production device can't compromise acoustics performance and waterproof performance, is more difficult to satisfy the waterproof demand of different degrees.

[ Utility model ] content

An object of the utility model is to provide a sounder and have its electronic equipment for solve among the prior art sounder can not compromise waterproof performance and produce the problem of product performance.

The technical scheme of the utility model as follows: on one hand, the sound production device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixed on the basin frame; the vibrating diaphragm comprises a vibrating part and a fixing part, the vibrating part is suspended on the basin frame, the fixing part extends from the edge of the vibrating part and surrounds the vibrating part, the basin frame comprises a top surface arranged opposite to the vibrating diaphragm and an outer side wall extending from the edge of the top surface towards the direction far away from the vibrating diaphragm, and the fixing part is opposite to and fixed with the top surface; the vibrating diaphragm also comprises an annular supporting piece which is wound on the periphery of the outer side wall and fixed on the side of the fixing part far away from the vibrating part, the annular supporting piece is connected to one side of the fixing part far away from the vibrating part and integrated with the fixing part in a double-color injection molding mode, and the hardness of the fixing part is greater than that of the vibrating part and is less than that of the annular supporting piece.

Further, at least one of the vibrating part and the fixing part is sheet-shaped silica gel.

Further, the annular support is a steel ring.

Furthermore, the vibration part comprises a connecting part arranged at an interval with the fixed part and a folded ring connected between the fixed part and the connecting part, and the folded ring is in an arc shape protruding towards the direction far away from the magnetic circuit system; the vibrating diaphragm also comprises a ball top connected to one side, far away from the folding ring, of the connecting part, and the connecting part is wound on the periphery of the ball top.

Further, vibration system is still including connecting the skeleton between vibrating diaphragm and voice coil loudspeaker voice coil, and the skeleton includes annular main part and the extension that extends of buckling towards the magnetic circuit direction from annular main part, and the voice coil loudspeaker voice coil is fixed in the one side that annular main part was kept away from to the extension, and annular main part is connected between connecting portion and ball-top.

Furthermore, the ball top is fixed on one side of the annular main body, which is far away from the extension part, the annular main body is correspondingly sunken towards the direction of the magnetic circuit system to form an avoiding groove, and the periphery of the ball top is correspondingly arranged in the avoiding groove.

Further, magnetic circuit includes the magnet portion that is fixed in the basin frame and installs in the magnet portion and keep away from the magnetic bowl of vibrating diaphragm one side, and the magnet portion presss from both sides and locates between magnetic bowl and the basin frame, and the magnet portion has the magnetic gap, and the voice coil loudspeaker voice coil is at least partly suspended in the magnetic gap.

Furthermore, the vibration system still include with roll over the ring just to and the centering piece that the interval set up, the skeleton still include certainly annular main part is towards keeping away from the supporting part that the vibrating diaphragm direction was buckled and is extended, the supporting part with the extension interval sets up, the supporting part presss from both sides and locates centering piece with between the annular main part, centering piece keeps away from one side of supporting part with the basin frame is fixed.

Further, the centering support piece comprises an auxiliary vibrating diaphragm and a flexible circuit board which are sequentially stacked, and the flexible circuit board is clamped between the supporting part and the auxiliary vibrating diaphragm.

On the other hand, the utility model also provides an electronic equipment, including the sound production device, the sound production device is for containing the sound production device of above-mentioned whole or partial technical structure.

The beneficial effects of the utility model reside in that: the vibration system is arranged on the basin frame, and the voice coil of the vibration system stimulates the vibration diaphragm to vibrate and produce sound under the excitation action of the magnetic circuit system. The fixed part setting of vibrating diaphragm is in order to connect vibrating diaphragm and basin frame on the top surface of basin frame, and the cyclic annular support piece of vibrating diaphragm extends from the edge of fixed part and sets up on the lateral wall of basin frame, and when sound production device assembled the casing of electronic equipment, cyclic annular support piece can realize the sealed between casing and the basin frame with the casing laminating. The fixing part and the annular supporting piece are manufactured through a double-color injection molding technology, so that the vibrating part, the fixing part and the annular supporting piece can form a whole and have different physical properties, the vibrating part meets the acoustic performance of sounding, and the annular supporting piece meets the waterproof product performance.

[ description of the drawings ]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a sound production device according to the present invention;

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

FIG. 3 shows a schematic cross-sectional A-A view of the sound device of FIG. 1; and

fig. 4 shows a schematic view of a part of the sounding device of fig. 3 in an enlarged structure at B.

The above figures contain the following reference numerals:

10. a basin stand; 11. a top surface; 12. an outer sidewall; 20. vibrating diaphragm; 21. a ball top; 22. a vibrating section; 221. a connecting portion; 222. folding the ring; 23. a fixed part; 24. an annular support; 30. a voice coil; 40. a framework; 41. an annular body; 42. an extension portion; 43. an avoidance groove; 51. a main pole core; 52. a secondary pole core; 61. main magnetic steel; 62. a secondary magnetic steel; 70. a magnetic bowl; 80. centering support piece, 81, supplementary vibrating diaphragm, 82, flexible circuit board.

[ detailed description ] embodiments

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and fig. 2, the sound generating device of the present embodiment includes a frame 10, and a vibration system and a magnetic circuit system fixed to the frame 10, wherein the vibration system includes a diaphragm 20 fixed to the frame 10, and a voice coil 30 fixed to a side of the diaphragm 20 close to the magnetic circuit system. The magnetic circuit system can excite the diaphragm 20 to vibrate and sound.

Specifically, as shown in fig. 1 to 4, the frame 10 includes a top surface 11 disposed opposite to the diaphragm 20 and an outer side wall 12 extending from an edge of the top surface 11 toward a direction away from the diaphragm 20, the diaphragm 20 includes a vibrating portion 22, a fixing portion 23, and an annular supporting member 24, the vibrating portion 22 is suspended in the frame 10, the fixing portion 23 extends from an edge of the vibrating portion 22 and surrounds the vibrating portion 22, the fixing portion 23 is opposite to and fixed to the top surface 11, the annular supporting member 24 is connected to a side of the fixing portion 23 away from the vibrating portion 22, and the annular supporting member 24 extends from the fixing portion 23 to the magnetic circuit system and is fixed on an outer surface of the outer side wall. The annular support 24 and the fixing portion 23 are molded in two colors, and the hardness of the fixing portion 23 is greater than that of the vibration portion 22 and less than that of the annular support 24.

By applying the technical solution of this embodiment, the vibration system is disposed on the frame 10, and the voice coil 30 of the vibration system stimulates the diaphragm 20 to vibrate and sound under the excitation of the magnetic circuit system. The fixing part 23 of the vibrating diaphragm 20 is arranged on the top surface 11 of the basin stand 10 to connect the vibrating diaphragm 20 and the basin stand 10, the annular support part 24 of the vibrating diaphragm 20 extends from the edge of the fixing part 23 and is juxtaposed on the outer side wall 12 of the basin stand 10, and when the sounding device is assembled on a casing of an electronic device, the annular support part 24 can be attached to the casing to realize sealing between the casing and the basin stand 10. Fixed part 23 and cyclic annular support piece 24 are made through double-shot molding technique, make vibrating portion 22, fixed part 23 and cyclic annular support piece 24 can form a whole, have different physical properties again simultaneously, make vibrating portion 22 satisfy the acoustic performance of sound production, cyclic annular support piece 24 satisfies waterproof product property ability, and the vibrating diaphragm 20 of this embodiment can compromise the acoustic performance of waterproof performance and product promptly.

Preferably, at least one of the vibrating portion 22 and the fixing portion 23 of the present embodiment is a sheet-shaped silicone, and the annular supporting member 24 is a steel ring. Silica gel has good elasticity, vibrates under the external excitation easily and produces sound.

As shown in fig. 2 and 4, the vibrating portion 22 of the present embodiment includes a connecting portion 221 spaced apart from the fixing portion 23, and a folded ring 222 connected between the fixing portion 23 and the connecting portion 221, wherein the folded ring 222 has an arc shape protruding in a direction away from the magnetic circuit system. The diaphragm 20 further includes a dome 21 connected to a side of the connection portion 221 away from the edge 222, and the connection portion 221 is disposed around a circumferential edge of the dome 21.

As shown in fig. 2, the vibration system of the present embodiment further includes a bobbin 40 connected between the diaphragm 20 and the voice coil 30, the bobbin 40 includes an annular main body 41 and an extending portion 42 extending from the annular main body 41 in a bending manner toward the magnetic circuit, the voice coil 30 is fixed to a side of the extending portion 42 away from the annular main body 41, and the annular main body 41 is connected between the connecting portion 221 and the ball top 21.

Preferably, as shown in fig. 2 and 4, the ball top 21 of the present embodiment is fixed on a side of the annular main body 41 away from the extending portion 42, the annular main body 41 is correspondingly recessed toward the magnetic circuit direction to form an avoiding groove 43, and a circumferential edge of the ball top 21 is correspondingly installed in the avoiding groove 43, so that the ball top 21 is embedded in the avoiding groove 43, thereby improving the stability of the ball top 21.

Further, the magnetic circuit system includes a magnet portion fixed to the frame 10 and a magnetic bowl 70 installed on a side of the magnet portion away from the diaphragm 20, the magnet portion is sandwiched between the magnetic bowl 70 and the frame 10, the magnet portion has a magnetic gap, and the voice coil 30 is at least partially suspended in the magnetic gap.

Specifically, as shown in fig. 2 and 4, the magnet portion of the present embodiment includes a magnetic steel assembly and a pole piece assembly, the magnetic steel assembly includes a main magnetic steel 61 and a sub magnetic steel 62, the main magnetic steel 61 and the sub magnetic steel 62 are disposed on a magnetic bowl 70, and the sub magnetic steel 62 is disposed on the circumferential outer side of the main magnetic steel 61 and has a gap with the main magnetic steel 61 to form a magnetic gap. The pole core assembly comprises a main pole core 51 and an auxiliary pole core 52, the main pole core 51 is arranged on main magnetic steel 61, the auxiliary pole core 52 is arranged on auxiliary magnetic steel 62, the basin frame 10 is arranged on the circumferential outer side of the auxiliary pole core 52, and the voice coil 30 is arranged in the magnetic gap between the magnetic steel assembly and the pole core assembly.

Further, the vibration system further includes a centering disk 80 opposite to the folding ring 222 and disposed at an interval, the frame 40 further includes a support portion 44 extending from the annular main body toward 41 away from the diaphragm direction, the support portion 44 and the extension portion 42 are disposed at an interval, the support portion 44 is clamped between the centering disk 80 and the annular main body 41, and one side of the centering disk 80 away from the support portion 44 is fixed to the basin stand 10. Further, the centering support sheet 80 includes an auxiliary diaphragm 81 and a flexible circuit board 82 stacked in sequence, and the flexible circuit board 82 is interposed between the support portion 44 and the auxiliary diaphragm 81.

The utility model also provides an electronic equipment, the electronic equipment (not shown in the figure) according to this embodiment includes the sound production device, specifically, the sound production device is for containing the sound production device of above-mentioned whole or partial technical structure. The electronic equipment of the embodiment has the advantages of good acoustic performance and good waterproof performance.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

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

Claims

1. A sounding device is characterized by comprising a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixed on the basin frame;

the vibrating diaphragm comprises a vibrating part and a fixing part, the vibrating part is suspended on the basin frame, the fixing part extends from the edge of the vibrating part and surrounds the vibrating part, the basin frame comprises a top surface opposite to the vibrating diaphragm and an outer side wall extending from the edge of the top surface in the direction far away from the vibrating diaphragm, and the fixing part is opposite to and fixed with the top surface;

the vibrating diaphragm further comprises an annular supporting piece which is wound on the periphery of the outer side wall and fixed on the periphery of the outer side wall, the annular supporting piece is connected to the fixing portion, the fixing portion is far away from one side of the vibrating portion and integrated with the fixing portion in a double-color injection molding mode, and the hardness of the fixing portion is larger than that of the vibrating portion and smaller than that of the annular supporting piece.

2. The sounder device according to claim 1, wherein at least one of the vibrating portion and the fixed portion is a sheet of silicone rubber.

3. The sounder device according to claim 1, wherein the annular support is a steel ring.

4. The sounder device according to claim 3, wherein the vibrating portion comprises a connecting portion spaced from the fixed portion, and a folded ring connected between the fixed portion and the connecting portion, the folded ring having an arc shape protruding away from the magnetic circuit system; the vibrating diaphragm further comprises a dome connected to one side, away from the folding ring, of the connecting part, and the connecting part is wound on the periphery of the dome.

5. The sounding device as claimed in claim 4, wherein the vibration system further comprises a skeleton connected between the diaphragm and the voice coil, the skeleton comprises an annular main body and an extension portion extending from the annular main body in a bending manner towards the magnetic circuit system, the voice coil is fixed on a side of the extension portion away from the annular main body, and the annular main body is connected between the connecting portion and the dome.

6. The sounding device as claimed in claim 5, wherein the dome is fixed to a side of the annular body away from the extension portion, and the annular body is recessed toward the magnetic circuit system to form an avoiding groove, and the periphery of the dome is correspondingly mounted in the avoiding groove.

7. The sounder device according to claim 6, wherein the magnetic circuit system comprises a magnet portion fixed to the frame and a magnetic bowl mounted on a side of the magnet portion remote from the diaphragm, the magnet portion being sandwiched between the magnetic bowl and the frame, the magnet portion having a magnetic gap, the voice coil being at least partially suspended within the magnetic gap.

8. The sounding device according to claim 6, wherein the vibration system further comprises a centering support piece opposite to and spaced apart from the corrugated rim, the frame further comprises a support portion extending from the ring-shaped main body in a bending manner in a direction away from the diaphragm, and the support portion is spaced apart from the extension portion; the supporting part is clamped between the centering support piece and the annular main body, and one side, far away from the supporting part, of the centering support piece is fixed with the basin frame.

9. The sounding device according to claim 8, wherein the centering disk comprises an auxiliary diaphragm and a flexible circuit board stacked in sequence, and the flexible circuit board is sandwiched between the supporting portion and the auxiliary diaphragm.

10. An electronic device comprising a sound-producing device, wherein the sound-producing device is according to any one of claims 1 to 9.