CN214101780U

CN214101780U - sound device

Info

Publication number: CN214101780U
Application number: CN202023229238.1U
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 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 and a magnetic circuit system; the vibration system comprises a vibration diaphragm and a voice coil, the vibration diaphragm comprises a first folding ring, a second folding ring and a vibration part, the first folding ring is arranged around the second folding ring and is mutually spaced from the second folding ring, the peripheral side of the vibration part is fixed on one side of the first folding ring close to the second folding ring, the inner peripheral side of the vibration part is fixed on one side of the second folding ring close to the first folding ring, the peripheral side of the first folding ring is fixed on the basin frame, and the inner peripheral side of the second folding ring is connected to the magnetic circuit system; the magnetic circuit system is provided with a magnetic gap, the voice coil is inserted into the magnetic gap, and the part of the second folded ring for fixing the vibration part at least partially falls into the inner side of the voice coil along the vibration direction of the vibrating diaphragm to the orthographic projection of the voice coil. Compared with the prior art, the utility model discloses a sound production device's acoustic performance is good.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to vocal device of electron audio amplifier product.

[ 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.

The sound production device in the related art 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, the vibration system comprises a vibrating diaphragm fixed on the basin frame, the peripheral side of the vibrating diaphragm is fixed on the basin frame, and the inner peripheral side of the vibrating diaphragm is fixed on the magnetic circuit system; the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, main magnetic steel fixed on the magnetic yoke, auxiliary magnetic steel surrounding the main magnetic steel and auxiliary magnetic steel covering one side of the main magnetic steel far away from the magnetic yoke, and the inner peripheral side of the vibrating diaphragm is fixed on the auxiliary magnetic steel. Specifically, the vibrating diaphragm includes first dog-ear, vibration portion and the second dog-ear of mutual interval, the week side of first dog-ear with the vibration portion all is fixed in the skeleton, the week side of second dog-ear is fixed in the supplementary magnet steel.

However, in the sound generating device of the related art, the voice coil drives the vibration portion to vibrate and generate sound through the bobbin, the vibration portion is clamped between the first folding ring and the second folding ring, in order to ensure the volume of the sound generating device, the width of the vibration portion is limited, which causes the effective radiation area of the vibration portion to be small, and the low-frequency performance of the sound generating device is poor, so that the acoustic performance of the sound generating device is poor.

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 sound production device that acoustic performance is good.

In order to achieve the above object, the present invention provides a sound-producing device, which comprises a basin frame, a vibration system fixed 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 and sound, the vibrating diaphragm comprises an annular first folding ring, an annular second folding ring and an annular vibration part, the first folding ring is arranged around the second folding ring and is spaced from the second folding ring, the outer peripheral side of the vibration part is fixed on one side of the first folding ring close to the second folding ring, the inner peripheral side of the vibration part is fixed on one side of the second folding ring close to the first folding ring, the outer peripheral side of the first folding ring is fixed on the basin frame, and the inner peripheral side of the second folding ring is connected to the magnetic circuit system; the magnetic circuit system is provided with a magnetic gap, the voice coil is inserted into the magnetic gap, and the second fold ring is used for fixing at least part of the vibration part to fall into the inner side of the voice coil along the vibration direction of the vibrating diaphragm to the orthographic projection of the voice coil.

Preferably, the second corrugated rim includes a second corrugated rim portion having an annular shape, a second fixing portion bent and extended from an outer peripheral side of the second corrugated rim portion toward the vibrating portion, and a third fixing portion bent and extended from an inner peripheral side of the second corrugated rim portion toward the magnetic circuit system, the second fixing portion is a fixing groove formed by recessing a side close to the vibrating portion, the fixing groove at least partially falls into an inner side of the voice coil along an orthographic projection of the voice coil in the vibration direction, and a peripheral edge of the vibrating portion is accommodated in the fixing groove and fixed; the third fixing portion is connected to the magnetic circuit system.

Preferably, the magnetic circuit system includes a magnetic yoke, a main magnetic steel fixed to the magnetic yoke, an auxiliary magnetic steel surrounding the main magnetic steel, and an auxiliary magnetic steel covering the main magnetic steel and located on a side of the main magnetic steel away from the magnetic yoke, the auxiliary magnetic steel and the main magnetic steel form the magnetic gap at an interval, the second folded ring surrounds the auxiliary magnetic steel, and the third fixing portion is connected to the auxiliary magnetic steel.

Preferably, the auxiliary magnetic steel comprises an auxiliary magnetic steel body fixed on the main magnetic steel and an auxiliary magnetic steel extension part formed by protruding the auxiliary magnetic steel body in a direction away from the magnetic yoke, the vibration system further comprises a fixing ring surrounding and fixed on the periphery of the auxiliary magnetic steel extension part, the second fold ring surrounds the fixing ring, and the third fixing part is fixed on the fixing ring.

Preferably, the vibration system still includes the skeleton, the skeleton including be annular skeleton body and by the interior week side of skeleton body the first skeleton fixed part that the direction of voice coil loudspeaker voice coil was buckled and is extended, the laminating of skeleton body is fixed in the vibration portion is close to one side of yoke, first skeleton fixed part is fixed in the voice coil loudspeaker voice coil is kept away from the one end of yoke.

Preferably, the framework further comprises a second framework fixing part which is bent and extends from the peripheral side of the framework body to the direction far away from the first folding ring; the vibration system further comprises an elastic supporting component which surrounds the magnetic circuit system and is arranged at an interval with the magnetic circuit system, one side, far away from the magnetic circuit system, of the elastic supporting component is fixed on the basin frame, and one side, close to the magnetic circuit system, of the elastic supporting component is fixed on the second framework fixing portion.

Preferably, the voice coil is of a rectangular structure, the number of the elastic support assemblies is two, and the two elastic support assemblies are respectively located on two opposite sides of the voice coil.

Preferably, the magnetic circuit system further comprises a main pole core fixed to the main magnetic steel and the auxiliary magnetic steel body in a clamping manner and an auxiliary pole core fixed to one end, away from the magnetic yoke, of the auxiliary magnetic steel, the auxiliary pole core comprises an annular auxiliary pole core body fixed to the auxiliary magnetic steel and an auxiliary pole core fixing portion extending from the auxiliary pole core body to the basin frame, and the auxiliary pole core fixing portion is fixed to the basin frame.

Preferably, the auxiliary pole core fixing portions include two auxiliary pole core fixing portions, and the two auxiliary pole core fixing portions are respectively located on the other two opposite sides of the voice coil.

Preferably, the fixing ring is a metal ring.

Compared with the prior art, the utility model discloses a sounder sets up to setting up for mutual interval through the vibrating diaphragm and is annular first book ring, vibration portion and second book ring, and will the periphery side of vibration portion is fixed in first book ring is close to one side of second book ring, the inner periphery of vibration portion is fixed in the second is rolled over the ring and is close to one side of first book ring, and will simultaneously the second is rolled over the ring and is used for fixing the part of vibration portion is followed the vibration direction of vibrating diaphragm to the orthographic projection of voice coil loudspeaker voice coil at least part falls into the inboard of voice coil loudspeaker voice coil, thereby effective increase is used for the sound production the effective radiation area of vibration portion has improved the low frequency performance of sounder, thereby make the acoustical performance of sounder is good.

[ 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 a schematic perspective view of the sound device of the present invention;

fig. 2 is an exploded view of a part of the three-dimensional structure of the sound device of the present invention;

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

FIG. 4 is an enlarged view of the portion indicated by B in FIG. 3;

fig. 5 is a schematic perspective view of a second folding ring of the sound device of the present invention;

fig. 6 is an assembly view of the three-dimensional structure of the diaphragm and the voice coil of the sound device of the present invention.

[ 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, wherein the sound-generating device 100 includes a basin frame 1, a vibration system 2 fixed on the basin frame 1, and a magnetic circuit system 3 for driving the vibration system 2 to vibrate and generate sound. The magnetic circuit system 3 has a magnetic gap 30 and a yoke 31 provided on one side of the frame 1.

The basin stand 1 is annular.

The vibration system 2 includes a diaphragm 21, a voice coil 22, a bobbin 23, an elastic support member 24, and a fixing ring 25.

The diaphragm 21 includes a first annular edge 211, a second annular edge 212, and an annular vibrating portion 213. Wherein the first folding ring 211 is disposed around the second folding ring 212 and spaced apart from the second folding ring 212; the outer peripheral side of the vibrating portion 213 is fixed to the first flange 211 on the side closer to the second flange 212; the inner peripheral side of the vibrating portion 213 is fixed to the second edge 212 on the side closer to the first edge 211; the outer periphery of the first folding ring 211 is fixed on the frame 1.

The first folding ring 211 is annular and disposed around the magnetic circuit system 3. Specifically, first dog-ear 211 is including being annular first dog-ear portion 2111, by the inner peripheral side direction of first dog-ear portion 2111 first vibration portion 2112 that the direction of second dog-ear 212 was buckled and is extended, by the outer peripheral side direction of first dog-ear portion 2111 the first fixed part 2113 that the direction of basin frame 1 was buckled and is extended, first fixed part 2113 is fixed in basin frame 1. The cross section of the first ring folding portion 2111 is arc-shaped.

In this embodiment, the first fold 211 further includes a first annular reinforcing portion 2114 bent and extended from the outer peripheral edge of the first fixing portion 2113 along the outer peripheral side of the bowl frame 1. The first reinforcing portion 2114 is fixed to the frame 1. The arrangement of the first reinforcement portion 2114 increases the bonding area of the first corrugated rim 211 and the frame 1, thereby enhancing the reliability of the sound production device 100.

The second fold 212 is annular. The first folding rings 211 surround the second folding rings 212 and are spaced apart from each other. The outer peripheral side of the second edge 212 is fixed to the inner peripheral side of the vibrating portion 213, and the inner peripheral side of the second edge 212 is connected to the magnetic circuit system 3.

Specifically, the second hinge 212 includes a second hinge portion 2121, a second fixing portion 2122, and a third fixing portion 2123.

The second collar portion 2121 is annular. The cross section of the second collar part 2121 is arc-shaped.

The second fixing portion 2122 is bent and extended from the outer circumferential side of the second collar portion 2121 toward the vibrating portion 213. The second fixing portion 2122 is fixed to an inner peripheral side of the vibrating portion 213. In this embodiment, the vibration part 213 is fixed to the second fixing part 2122 by gluing.

In order to fix the second edge 212 and the vibration part 213 more preferably, in this embodiment, the second fixing part 2122 is a fixing groove 21220 formed by recessing a side close to the vibration part 213. The periphery of the vibrating portion is received in the fixing groove 21220 and fixed. The fixing grooves 21220 are provided to facilitate the consistency of the thickness of the diaphragm 21 and the good acoustic performance of the sound generated by vibration. Preferably, the second edge 212 and the vibrating portion 213 are integrally formed by fixing the fixing groove 21220, which simplifies the manufacturing and assembling of the diaphragm 21 and improves the acoustic performance.

The second corrugated rim 212 is used to fix the part of the vibration part 213 to the orthographic projection of the voice coil 22 along the vibration direction of the diaphragm 21, and at least part of the part falls into the inner side of the voice coil 22. In this embodiment, the fixing groove 21220 at least partially falls into the inner side of the voice coil 22 along the forward projection of the voice coil 22 in the vibration direction, so as to effectively increase the effective radiation area of the diaphragm 21 for generating sound, i.e. to make the area of the vibration portion 213 for vibrating larger, thereby improving the low-frequency performance of the sound generating device 100, and making the acoustic performance of the sound generating device 100 good.

The third fixing portion 2123 is bent from the inner peripheral side of the second collar portion 2121 and extends in the direction of the magnetic path system 3. The third fixing part 2123 is connected to the magnetic circuit system 3.

The vibration portion 213 has a ring shape. The vibration portion 213 is interposed between the first and second folding rings 211 and 212.

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

One end of the framework 23 is fixed to the diaphragm 21, and the other end of the framework 23 is fixed to the voice coil 22.

Specifically, the frame 23 includes a frame body 231, a first frame fixing portion 232 and a second frame fixing portion 233.

The frame body 231 is annular.

The vibrating portion 213 is bonded and fixed to a side of the frame body 231 away from the yoke 31. This structure allows the first vibration portion 2112 and the skeleton body 231 to form an integral structure, so that the acoustic performance of the vibration sound production of the diaphragm 21 is good, and delamination caused by vibration can be prevented.

The first bobbin fixing portion 232 is bent and extended from the inner peripheral side of the bobbin body 231 toward the voice coil 22. The first frame fixing portion 232 is spaced apart from the magnetic circuit system 3. The first bobbin fixing portion 232 is fixed to an end of the voice coil 22 away from the magnetic yoke 31, so that the voice coil 22 drives the diaphragm 21 to vibrate and generate sound through the first bobbin fixing portion 232 and the bobbin body 231.

The second frame fixing portion 233 is bent and extended from the outer peripheral side of the frame body 231 in a direction away from the first folding ring 211. The second frame fixing portion 233 is used for fixing the elastic support member 24.

The elastic support assembly 24 surrounds the magnetic circuit system 3 and is spaced apart from the magnetic circuit system 3. Specifically, the side of the elastic support component 24 away from the magnetic circuit system 3 is fixed to the frame 1, and the side of the elastic support component 24 close to the magnetic circuit system is fixed to the second frame fixing portion 233, so that the elastic support component 24 balances the vibration of the voice coil 22.

In this embodiment, the voice coil 22 has a rectangular structure, and the elastic support assembly 24 includes two pieces. Two of the resilient support members 24 are located on opposite sides of the voice coil 22. This structure makes the support of the voice coil 22 by the elastic support component 24 more stable, and the vibration reliability is better, so that the acoustic performance of the vibration sound production of the diaphragm 21 is good.

The fixing ring 25 is annular. The third fixing portion 2123 is bent from the inner peripheral side of the second collar portion 2121 and extends in a direction toward the fixing ring 25. The second collar 212 is disposed around the fixed ring 25.

The second flange 212 is fixed to the fixing ring 25. The inner peripheral side of the second edge 212 is fixed to the outer peripheral side of the fixed ring 25. Specifically, the third fixing portion 2123 is fixed to the outer peripheral side of the fixing ring 25.

The fixing ring 25 is a metal ring. Wherein, the hardness of the metal material used for manufacturing the fixing ring 25 is greater than the hardness of the diaphragm 21, and the fixing ring 25 is used for fixing the diaphragm 21 to the magnetic circuit system 3.

In this embodiment, the fixing ring 25 is a steel ring. The material choice of the steel ring makes the construction simple and easy to assemble.

The magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32, a sub magnetic steel 33, an auxiliary magnetic steel 34, a main pole core 35, and a sub pole core 36.

The magnetic yoke 31 and the diaphragm 21 are distributed on two opposite sides of the basin stand 1.

The main magnet steel 32 is fixed to the yoke 31.

The sub magnetic steel 33 is fixed to the yoke 31. The secondary magnetic steel 33 surrounds the primary magnetic steel 32. The secondary magnetic steel 33 and the primary magnetic steel 32 are spaced to form the magnetic gap 30, and the voice coil 22 is inserted into the magnetic gap 30.

The auxiliary magnetic steel 34 covers the side of the main magnetic steel 32 far away from the magnetic yoke 31. The second fold ring 212 is disposed around the auxiliary magnetic steel 34. Specifically, the inner peripheral side of the second edge 212 is connected to the auxiliary magnetic steel 34. The third fixing part 2123 is connected to the auxiliary magnetic steel 34.

Specifically, the auxiliary magnetic steel 34 includes an auxiliary magnetic steel body 341 and an auxiliary magnetic steel extension 342.

The auxiliary magnetic steel body 341 is fixed to the main magnetic steel 32. The first frame fixing portions 232 are spaced apart from and surround the auxiliary magnetic steel body 341.

The auxiliary magnetic steel extension 342 is formed by protruding the auxiliary magnetic steel body 341 in a direction away from the magnetic yoke 31.

Wherein, the fixing ring 25 surrounds and is fixed on the peripheral side of the auxiliary magnetic steel extension portion 342.

The fixing ring 25 is used for fixing the second folding ring 212 to the auxiliary magnetic steel 34. I.e. indirectly to the auxiliary magnetic steel 34 through the fixed ring 25.

The main pole core 35 is fixed to the main magnet steel 32 and the auxiliary magnet steel body 341 in a sandwiched manner.

The secondary pole core 36 is fixed to an end of the secondary magnetic steel 33 away from the magnetic yoke 31.

The auxiliary pole core 36 includes an annular auxiliary pole core body 361 fixed to the auxiliary magnetic steel 33, and an auxiliary pole core fixing portion 362 extending from the auxiliary pole core body 361 to the direction of the tub frame 1, wherein the magnetic circuit system 3 is fixed to the tub frame 1. Specifically, the auxiliary pole core fixing part 362 is fixed to the frame 1. Of course, in other embodiments, the fixing of the yoke 31 to the frame 1 is also possible.

In the present embodiment, the auxiliary pole core fixing portion 362 includes two. The two auxiliary pole core fixing portions 362 are respectively located on the other opposite sides of the voice coil 22. The structure is fixed on the basin frame 1 through the two auxiliary pole core fixing parts 362, so that the reliability of the fixing structure of the magnetic circuit system 3 and the basin frame 1 is higher.

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 comprising a basin frame and a vibration system respectively fixed to the basin frame and a magnetic circuit system that drives the vibration system to vibrate and emit sound;

The vibration system includes a ring-shaped diaphragm and a voice coil that drives the diaphragm to vibrate and sound, and the diaphragm includes a ring-shaped first fold ring, a ring-shaped second fold ring, and a ring-shaped ring. The vibrating part, the first fold is arranged around the second fold and is spaced apart from the second fold, and the outer peripheral side of the vibrator is fixed to the first fold close to the second fold. On one side, the inner peripheral side of the vibrating part is fixed to the side of the second folding ring close to the first folding ring, the outer peripheral side of the first folding ring is fixed to the basin frame, the second folding ring The inner peripheral side of the ring is connected to the magnetic circuit system; the magnetic circuit system has a magnetic gap, and the voice coil is inserted into the magnetic gap, and is characterized in that:

The part of the second folded ring used for fixing the vibrating part falls into the inner side of the voice coil at least partially in the orthographic projection of the voice coil along the vibration direction of the diaphragm.

2 . The sound-generating device according to claim 1 , wherein the second fold ring comprises a second fold ring part in the shape of an annular shape, and the second fold ring part extends from the outer peripheral side of the second fold ring part to the vibration part. 3 . a second fixing part bent and extended in the direction and a third fixed part bent and extended in the direction of the magnetic circuit system from the inner peripheral side of the second folded ring part, the second fixed part is close to the vibration part A fixed groove formed by a depression on one side of the vibration part, the orthographic projection of the fixed groove to the voice coil along the vibration direction at least partially falls into the inner side of the voice coil, and the periphery of the vibrating part is accommodated in the fixed groove and forming a fixing; the third fixing part is connected to the magnetic circuit system.

3 . The sounding device according to claim 2 , wherein the magnetic circuit system comprises a magnetic yoke, a main magnetic steel respectively fixed to the magnetic yoke, a secondary magnetic steel surrounding the main magnetic steel, and a cover. 4 . An auxiliary magnetic steel fixed on the side of the main magnetic steel away from the yoke, the auxiliary magnetic steel and the main magnetic steel are spaced apart to form the magnetic gap, and the second folding ring is arranged around the auxiliary magnetic steel , the third fixing part is connected to the auxiliary magnetic steel.

4 . The sounding device according to claim 3 , wherein the auxiliary magnetic steel comprises an auxiliary magnetic steel body fixed on the main magnetic steel and a direction away from the magnetic yoke from the auxiliary magnetic steel body. 5 . A protruding auxiliary magnetic steel extension portion, the vibration system further includes a ring-shaped fixing ring surrounding and fixed on the peripheral side of the auxiliary magnetic steel extension portion, and the second folding ring is arranged around the fixing ring, The third fixing portion is fixed to the fixing ring.

5 . The sound-generating device according to claim 3 , wherein the vibration system further comprises a skeleton, and the skeleton comprises a ring-shaped skeleton body and a skeleton extending from the inner circumference of the skeleton body to the voice coil. 6 . A first frame fixing part bent and extending in the direction, the frame body is attached and fixed to the side of the vibrating part close to the yoke, and the first frame fixing part is fixed to the voice coil away from the yoke one end.

6 . The sounding device according to claim 5 , wherein the skeleton further comprises a second skeleton fixing portion that is bent and extended from the outer circumference of the skeleton body in a direction away from the first folding ring; The vibration system further includes an elastic support component surrounding the magnetic circuit system and spaced apart from the magnetic circuit system, the elastic support component is fixed to the basin frame at a side away from the magnetic circuit system, and the elastic support A side of the assembly close to the magnetic circuit system is fixed to the second frame fixing part.

7 . The sound-generating device according to claim 6 , wherein the voice coil has a rectangular structure, the elastic support components comprise two, and the two elastic support components are respectively located on opposite sides of the voice coil. 8 . .

8 . The sounding device according to claim 7 , wherein the magnetic circuit system further comprises a main pole core sandwiched and fixed on the main magnet steel and the auxiliary magnetic steel body, and a main pole core fixed on the auxiliary magnetic steel body. 9 . The secondary pole core at one end of the steel away from the yoke, the secondary pole core includes a secondary pole core body that is annular and fixed to the secondary magnetic steel and a direction from the secondary pole core body to the basin frame The extended secondary pole core fixing part is fixed to the basin frame.

9 . The sounding device according to claim 8 , wherein the secondary pole core fixing parts comprise two, and the two secondary pole core fixing parts are respectively located on the other opposite sides of the voice coil. 10 .

10. The sounding device according to claim 4, wherein the fixing ring is a metal ring.