CN214101765U

CN214101765U - Sounding device

Info

Publication number: CN214101765U
Application number: CN202023196122.2U
Authority: CN
Inventors: 肖波; 孔晨亮; 章统; 令狐荣林
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-31
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a sounding device, which comprises a basin frame, a vibration system supported on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and sound; the vibrating diaphragm of the vibrating system comprises a first annular folded ring, a second annular folded ring and an annular vibrating part, the vibrating system also comprises a fixing ring which is covered and fixed on one side of the main magnetic steel unit, which is far away from the magnetic yoke, the second folded ring comprises a second annular folded ring part, a second outer fixing part which is bent and extended from the outer peripheral side of the second folded ring part, a second inner fixing part which is bent and extended from the inner peripheral side of the second folded ring part to the direction close to the fixing ring, and a reinforcing part which is bent and extended from one side of the second inner fixing part, which is far away from the magnetic yoke, to the direction far away from the magnetic yoke; the second outer fixing part is connected to the vibrating part, the second inner fixing part is fixed on the outer side of the fixing ring, and the reinforcing part and the second flange part are spaced and abutted to the outer side of the fixing ring. The utility model discloses a vibrating diaphragm of vocal device is fixed respond well, and the reliability is better, and acoustic performance is more excellent.

Description

Sounding device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to a sounding device.

[ background of the invention ]

And the sound generating device is used for converting the audio signal into sound to be played in the mobile terminal.

The sound production device in the related art comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system with a magnetic gap, wherein the magnetic circuit system drives the vibration system to vibrate and produce sound; the resilient support assembly connects the skeleton to the basin frame to provide lateral support against rocking.

However, in the sound production device in the related art, the middle vibrating diaphragm and the fixing ring are integrally formed, the joint is simple in structure, and during assembly, the flatness of the gluing part between the middle vibrating diaphragm and the fixing ring is poor, so that the sealing performance is poor, the connecting strength between the middle vibrating diaphragm and the fixing ring is poor, and the reliability and the acoustic performance of the sound production device are affected.

Therefore, there is a need to provide a new sound generation device to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a good reliability, acoustic performance is excellent sounder.

In order to achieve the above object, the present invention provides a sound-producing device, which comprises a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound;

the vibration system comprises an annular vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate; the vibrating diaphragm comprises a first annular folding ring, a second annular folding ring and an annular vibrating part, the first folding ring is arranged around the second folding ring and is spaced from the first folding ring, the outer peripheral side of the vibrating part is fixed on one side, close to the second folding ring, of the first folding ring, and the inner peripheral side of the vibrating part is fixed on one side, close to the first folding ring, of the second folding ring;

the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, main magnetic steel units respectively fixed on the magnetic yoke, and auxiliary magnetic steel surrounding the main magnetic steel units; the auxiliary magnetic steel and the main magnetic steel unit form a magnetic gap at intervals, and the voice coil is inserted into the magnetic gap; the peripheral side of the first folding ring is fixed on the basin frame;

the vibration system also comprises a fixing ring which is covered and fixed on one side of the main magnetic steel unit, which is far away from the magnetic yoke, and the inner peripheral side of the second folded ring is fixed on one end, which is close to the magnetic yoke, of the fixing ring; the second folded ring comprises a second folded ring part which is annular, a second outer fixing part which is bent and extended from the outer peripheral side of the second folded ring part, a second inner fixing part which is bent and extended from the inner peripheral side of the second folded ring part to the direction close to the fixing ring, and a reinforcing part which is bent and extended from the side, far away from the magnetic yoke, of the second inner fixing part to the direction far away from the magnetic yoke; the second outer fixing portion is connected to the vibrating portion, the second inner fixing portion is fixed to the outer side of the fixing ring, and the reinforcing portion and the second flange portion are spaced and abutted to be fixed to the outer side of the fixing ring.

Furthermore, the second folding ring further comprises a containing groove formed by sinking one end of the second inner fixing part close to the fixing ring; the fixing ring comprises an annular fixing ring body sleeved on the main magnetic steel unit and a fixing ring reinforcing wall bent and extended from one end, close to the magnet yoke, of the fixing ring body to the direction of the accommodating groove, the fixing ring reinforcing wall extends to the accommodating groove to form fixed connection, and the reinforcing part is pressed on the fixing ring reinforcing wall and is abutted against and fixed on the outer side of the fixing ring body.

Furthermore, the second folding ring and the fixing ring are integrally formed.

Further, in the vibration direction of the diaphragm, the cross-sectional area of the reinforcing portion gradually decreases from the side thereof close to the yoke to the side thereof away from the yoke.

Furthermore, the cross section of the reinforcing part is triangular and comprises a first right-angle side attached to the outer peripheral side of the fixing ring body, a second right-angle side attached to the reinforcing wall of the fixing ring in an abutting mode, and a bevel edge close to the second flange part and connecting the first right-angle side and the second right-angle side.

Furthermore, the vibration system further comprises a framework, wherein the framework comprises an annular framework body and a first framework fixing part which is bent and extended from the inner peripheral side of the framework body to the direction of the voice coil; the framework body is positioned between the first folding ring and the second folding ring, is respectively connected with the inner peripheral side of the first folding ring and the outer peripheral side of the second folding ring, and is used as the vibration part; the first framework fixing part is fixed at one end, far away from the magnetic yoke, of the voice coil, and the second outer fixing part is fixed at one side, close to the framework body, of the first framework fixing part.

Furthermore, the vibrating diaphragm further comprises an annular dome, wherein the dome is arranged between the first folding ring and the second folding ring and is attached and fixed to one side, away from the voice coil, of the framework body.

Furthermore, the skeleton still includes by the periphery side direction of skeleton body is kept away from the second skeleton fixed part that the direction of vibrating diaphragm extends, vibration system still includes the elastic support subassembly, the elastic support subassembly is fixed in the basin frame is kept away from the one end of vibrating diaphragm, second skeleton fixed part connect in the basin frame.

Furthermore, the voice coil is of a rectangular structure, the number of the elastic supporting components is two, and the two elastic supporting components are respectively located on two opposite sides of the voice coil.

Furthermore, the main magnetic steel unit comprises a first main magnetic steel, a pole core and a second main magnetic steel which are sequentially overlapped and fixed on the magnetic yoke, and the second main magnetic steel comprises a main magnetic steel body which is overlapped and fixed on the pole core and a main magnetic steel extension part which is convexly extended from one side of the main magnetic steel body, which is far away from the magnetic yoke; the second fold is arranged around the main magnetic steel extension part and enables at least part of the main magnetic steel extension part to be exposed out of the vibrating diaphragm, and the fixed ring is covered and fixed on the main magnetic steel extension part.

Compared with the prior art, in the sound generating device of the present invention, the second corrugated rim includes a second corrugated rim portion in an annular shape, a second outer fixing portion bent and extended from an outer peripheral side of the second corrugated rim portion, a second inner fixing portion bent and extended from an inner peripheral side of the second corrugated rim portion toward a direction close to the fixing ring, and a reinforcing portion extended from a side of the second inner fixing portion away from the yoke toward a direction away from the yoke; the outer fixed part of second connect in vibration portion, the second internal fixation portion is fixed in gu fixed ring's the outside, the rib with second flange portion interval and butt are fixed in gu fixed ring's the outside, and then improve the sealing stability between vibrating diaphragm and the solid fixed ring to vibration system's vibration effect has been increased, the reliability and the acoustic performance of sounder have further been improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and 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 without inventive work, wherein:

fig. 1 is an exploded view of the sound device of the present invention.

Fig. 2 is a schematic view of a three-dimensional structure of the sound generating device of the present invention.

Fig. 3 is a sectional view taken along line a-a in fig. 2.

Fig. 4 is a sectional view taken along line B-B in fig. 2.

Fig. 5 is an enlarged view of a portion C shown in fig. 4.

Fig. 6 is an enlarged view of a portion D shown in fig. 5.

100, a sounding device; 1. a basin stand; 2. a vibration system; 21. a framework; 211. a frame body 212, a first frame fixing part; 213. a second frame fixing part; 22. vibrating diaphragm; 221. a first fold, 222, a second fold 2221, a second fold; 2222. a second outer fixing portion; 2223. a second inner fixing portion; 2224. a reinforcing portion; 22241. a first right-angle side; 22242. a second right-angle side; 22243. a bevel edge; 2225. an accommodating groove; 223. a vibrating portion 23, a dome; 24. a voice coil; 25. an elastic support member; 251, an elastic member; 252. an auxiliary diaphragm; 26. a fixed ring, 261, a fixed ring body, 262, a fixed ring reinforcement wall; 3. magnetic circuit system, 31, yoke; 32. a secondary magnetic steel; 33. a main magnetic steel unit; 331. a first main magnetic steel; 332. a pole piece; 333. a second main magnetic steel; 3331. a main magnetic steel body; 3332. a main magnetic steel extension part; 34. a magnetic gap; 35. and a secondary pole core.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a sound generating device 100, which includes a frame 1, a vibration system 2, and a magnetic circuit system 3 with a magnetic gap. The vibration system 2 and the magnetic circuit system 3 are respectively supported on the basin frame 1, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and sound.

The vibration system 2 comprises a ring-shaped diaphragm 22 and a voice coil 24 for driving the diaphragm 22 to vibrate; the diaphragm 22 includes a first annular edge 221, a second annular edge 222, and an annular vibration portion 223, the first edge 221 is disposed around the second edge 222 and spaced from the first edge 221, the outer periphery of the vibration portion 223 is fixed to the side of the first edge 221 close to the second edge 222, and the inner periphery of the vibration portion 223 is fixed to the side of the second edge 222 close to the first edge 221. The vibrating portion 223 may be directly connected between the first folding ring 221 and the second folding ring 222 in a ring structure, or a portion of the frame 21 may be attached between the first folding ring 221 and the second folding ring 222 to serve as the vibrating portion 223.

The magnetic circuit system 3 comprises a magnetic yoke 31 fixed on the basin stand 1, a main magnetic steel unit 33 respectively fixed on the magnetic yoke 31, and an auxiliary magnetic steel 32 surrounding the main magnetic steel unit 33; the secondary magnetic steel 32 and the main magnetic steel unit 33 form a magnetic gap 34 at intervals, and the voice coil 24 is inserted into the magnetic gap 34; the outer peripheral side of the first edge 221 is fixed to the frame 1.

The magnetic circuit system 3 further includes a secondary pole core 35 covering the secondary magnetic steel 32, and the magnetic gap 34 is formed between the secondary pole core 35 and the primary magnetic steel unit 33.

The vibration system 2 further includes a fixing ring 26 covering and fixed on one side of the main magnet steel unit 33 away from the magnetic yoke 31, and the inner peripheral side of the second folded ring 222 is fixed on one end of the fixing ring 26 close to the magnetic yoke 31; the second flange 222 includes a second flange portion 2221 having a ring shape, a second outer fixing portion 2222 bent and extended from an outer peripheral side of the second flange portion 2221, a second inner fixing portion 2223 bent and extended from an inner peripheral side of the second flange portion 2221 toward a direction approaching the fixing ring 26, and a reinforcing portion 2224 extended from a side of the second inner fixing portion 2223 away from the yoke 31 toward a direction away from the yoke 31; the second outer fixing portion 2222 is connected to the vibrating portion 223, the second inner fixing portion 2223 is fixed to the outer side of the fixing ring 26, and the reinforcing portion 2224 is fixed to the outer side of the fixing ring 26 in a spaced manner from the second flange portion 2221. And further, the sealing stability between the diaphragm 22 and the fixing ring 26 is improved, so that the vibration effect of the vibration system 2 is increased, and the reliability and the acoustic performance of the sound production device are further improved.

Specifically, the second folding ring 222 further includes a receiving groove 2225 formed by recessing an end of the second inner fixing portion 2223 close to the fixing ring 26; the fixing ring 26 includes a ring-shaped fixing ring body 261 sleeved on the main magnet unit 33, and a fixing ring reinforcing wall 262 bent and extended from one end of the fixing ring body 261 close to the magnet yoke 31 toward the accommodating groove 2225, the fixing ring reinforcing wall 262 extends into the accommodating groove 2225 to form a fixed connection, and the reinforcing portion 2224 is pressed on the fixing ring reinforcing wall 262 and is abutted against and fixed to the outer side of the fixing ring body 261. So that the fixing effect between the fixing ring 26 and the second flange 222 is better and the acoustic effect is better.

Specifically, the second fold 222 is integrally formed with the fixing ring 26. This makes the second flange 222 and the fixing ring 26 have good sealing performance, thereby improving the fixing performance of the diaphragm 22 and the fixing ring 26, and further improving the reliability and acoustic performance of the sound generating device. Of course, the second flange 222 is integrally formed with the fixing ring 26. The production efficiency of the diaphragm 22 and the fixing ring 26 can also be improved.

Further, the fixing ring 26 is a metal ring, and the hardness of the metal ring is higher than that of the diaphragm, so as to fix the diaphragm.

Further, the second tab 222 and the fixing ring 26 may be made of metal, so as to enhance the fixing strength of the second tab 222, and to be magnetically conductive, thereby reducing the exposure of the magnetic field.

Specifically, in the vibration direction of the diaphragm 22, the cross-sectional area of the reinforcing portion 2224 gradually decreases from the side thereof close to the yoke 31 to the side thereof away from the yoke 31. Because the section is curved corrugated rim, conveniently provide the amplitude support for when vibration portion 223 vibrates, the vibration effect is better.

Specifically, the reinforcing portion 2224 has a triangular cross section including a first rectangular edge 22241 fitted to the outer peripheral side of the fixing ring body 261, a second rectangular edge 22242 fitted to the fixing ring reinforcing wall 262 in abutment, and a tapered edge 22243 adjacent to the second loop portion 2221 and connecting the first rectangular edge 22241 and the second rectangular edge 22242. This makes the fixing ring body 261 and the fixing reinforcement wall supported and fixed by the first square edge 22241 and the second square edge 22242, respectively, and the fixing ring 26 is fixed and stable.

Specifically, the vibration system 2 further includes a bobbin 21, and the bobbin 21 includes a ring-shaped bobbin body 211 and a first bobbin fixing portion 212 extending from an inner peripheral side of the bobbin body 211 to the voice coil 24; the frame body 211 is located between the first tab 221 and the second tab 222 and connected to an inner circumferential side of the first tab 221 and an outer circumferential side of the second tab 222, respectively, to serve as the vibrating portion 223; the first bobbin fixing portion 212 is fixed to an end of the voice coil 24 away from the yoke 31, and the second outer fixing portion 2222 is fixed to a side of the first bobbin fixing portion 212 close to the bobbin body 211.

Specifically, the diaphragm 22 further includes an annular dome 23, and the dome 23 is disposed between the first folding ring 221 and the second folding ring 222, and is attached and fixed to one side of the bobbin body 211 away from the voice coil 24.

Specifically, skeleton 21 still include by the periphery side direction of skeleton body 211 is kept away from the second skeleton fixed part 213 that the direction of vibrating diaphragm 22 extends, vibration system 2 still includes elastic support subassembly 25, elastic support subassembly 25 is fixed in basin frame 1 is kept away from the one end of vibrating diaphragm 22, second skeleton fixed part 213 connect in basin frame 1.

Specifically, the voice coil 24 is in a rectangular structure, and the number of the elastic support assemblies 25 is two, and the two elastic support assemblies 25 are respectively located at two opposite sides of the voice coil 24. This facilitates fixing the voice coil 24, prevents the voice coil 24 from oscillating laterally, and improves reliability.

The elastic support assembly 25 includes an elastic member 251 fixed to the frame 1 and an auxiliary diaphragm 252 attached to a side of the elastic member 251 away from the diaphragm 22, and the second frame fixing portion 213 is connected to the elastic member 251.

Specifically, the main magnetic steel unit 33 includes a first main magnetic steel 331, a pole core 332, and a second main magnetic steel 333 sequentially stacked and fixed on the magnetic yoke 31, where the second main magnetic steel 333 includes a main magnetic steel body 3331 stacked and fixed on the pole core 332, and a main magnetic steel extension 3332 protruding and extending from one side of the main magnetic steel body 3331 away from the magnetic yoke 31; the second folding ring 222 is disposed around the main magnetic steel extension 3332, so that at least a portion of the main magnetic steel extension 3332 is exposed from the diaphragm 22, and the fixing ring 26 is fixed to the main magnetic steel extension 3332 in a covering manner. The voice coil 24 is inserted into the magnetic gap 34 between the first main magnetic steel 331 and the second main magnetic steel 333, and between the pole core 332 and the second main magnetic steel 333. The first main magnetic steel 331, the pole core 332, the second main magnetic steel 333 and the auxiliary magnetic steel 32 are matched to drive the vibration system 2 to vibrate, so that the vibration effect of the voice coil 24 is ensured, and meanwhile, the sound production performance of the sound production device can be ensured. The fixing ring 26 is sleeved on the second main magnetic steel 333 to ensure the bonding and sealing between the second main magnetic steel 333 and the fixing ring 26, and ensure the stable connection between the magnetic circuit system 3 and the vibration system 2. The magnetic circuit system 3 further comprises an upper clamping plate 34 arranged on the basin frame 1, and the magnetic circuit system 3 is fixedly connected with the basin frame 1 through the upper clamping plate 34.

Compared with the related art, in the sound generating device of the present invention, the second collar 222 includes a second collar portion 2221 having a ring shape, a second outer fixing portion 2222 bent and extended from an outer peripheral side of the second collar portion 2221, a second inner fixing portion 2223 bent and extended from an inner peripheral side of the second collar portion 2221 toward a direction close to the fixing ring 26, and a reinforcing portion 2224 extended from a side of the second inner fixing portion 2223 away from the yoke 31 toward a direction away from the yoke 31; the second outer fixing portion 2222 is connected to the vibrating portion 223, the second inner fixing portion 2223 is fixed to the outer side of the fixing ring 26, the reinforcing portion 2224 is fixed to the outer side of the fixing ring 26 in a spaced and abutting manner with the second flange portion 2221, and therefore the sealing stability between the vibrating diaphragm 22 and the fixing ring 26 is improved, the vibration effect of the vibration system 2 is increased, and the reliability and the acoustic performance of the sound generating device are further improved.

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 comprises a basin frame, a vibration system supported on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and sound;

the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, main magnetic steel units respectively fixed on the magnetic yoke, and auxiliary magnetic steel surrounding the main magnetic steel units; the auxiliary magnetic steel and the main magnetic steel unit form a magnetic gap at intervals, and the voice coil is inserted into the magnetic gap; the peripheral side of the first folding ring is fixed on the basin frame; it is characterized in that the preparation method is characterized in that,

2. The sounder device according to claim 1, wherein the second corrugated rim further comprises a receiving groove formed by recessing an end of the second inner fixing portion adjacent to the fixing ring; the fixing ring comprises an annular fixing ring body sleeved on the main magnetic steel unit and a fixing ring reinforcing wall bent and extended from one end, close to the magnet yoke, of the fixing ring body to the direction of the accommodating groove, the fixing ring reinforcing wall extends to the accommodating groove to form fixed connection, and the reinforcing part is pressed on the fixing ring reinforcing wall and is abutted against and fixed on the outer side of the fixing ring body.

3. The sounder device according to claim 1 or 2, wherein the second fold ring is integrally formed with the fixed ring.

4. The sounding device according to claim 3, wherein the cross-sectional area of the reinforcing portion gradually decreases from a side of the reinforcing portion close to the yoke to a side of the reinforcing portion away from the yoke along the vibration direction of the diaphragm.

5. The sounder device according to claim 4, wherein the stiffening portion has a triangular cross-section including a first leg attached to the outer peripheral side of the retaining ring body, a second leg attached in abutment with the retaining ring stiffening wall, and a hypotenuse adjacent the second loop portion and connecting the first leg and the second leg.

6. The sounding device according to claim 1, wherein the vibration system further comprises a bobbin, the bobbin comprises a ring-shaped bobbin body and a first bobbin fixing portion extending from an inner peripheral side of the bobbin body to the voice coil; the framework body is positioned between the first folding ring and the second folding ring, is respectively connected with the inner peripheral side of the first folding ring and the outer peripheral side of the second folding ring, and is used as the vibration part; the first framework fixing part is fixed at one end, far away from the magnetic yoke, of the voice coil, and the second outer fixing part is fixed at one side, close to the framework body, of the first framework fixing part.

7. The sounding device according to claim 6, wherein the diaphragm further comprises an annular dome, and the dome is disposed between the first folded ring and the second folded ring and is attached to one side of the bobbin body away from the voice coil.

8. The sounding device according to claim 6, wherein the skeleton further comprises a second skeleton fixing portion extending from the outer periphery of the skeleton body to a direction away from the diaphragm, the vibration system further comprises an elastic supporting component fixed to an end of the frame away from the diaphragm, and the second skeleton fixing portion is connected to the frame.

9. The sounder device according to claim 8, wherein the voice coil is of a rectangular configuration, and the resilient support members comprise two, one on each of opposite sides of the voice coil.

10. The sound production device according to claim 1, wherein the main magnetic steel unit comprises a first main magnetic steel, a pole core and a second main magnetic steel which are sequentially stacked and fixed on the magnetic yoke, the second main magnetic steel comprises a main magnetic steel body stacked and fixed on the pole core and a main magnetic steel extension part which is protruded and extended from one side of the main magnetic steel body far away from the magnetic yoke; the second fold is arranged around the main magnetic steel extension part and enables at least part of the main magnetic steel extension part to be exposed out of the vibrating diaphragm, and the fixed ring is covered and fixed on the main magnetic steel extension part.