CN213462265U

CN213462265U - Sound production device

Info

Publication number: CN213462265U
Application number: CN202022175565.7U
Authority: CN
Inventors: 张龙; 张学锋; 董献杰; 杨虎虎
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-15
Anticipated expiration: 2030-09-28
Also published as: WO2022062106A1

Abstract

The utility model provides a sounder, it is including vibration system and the drive that is used for the vibration sound production the magnetic circuit of vibration system vibration sound production, vibration system includes vibrating diaphragm and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration, sounder still locates including the lid the vibrating diaphragm is kept away from the protecgulum of magnetic circuit one side, the protecgulum is equipped with the mouth of sounding that runs through on it, the vibrating diaphragm include the vibration portion, by the bending ring portion that extends of vibration portion outer peripheral edges bending type, by bending ring portion keeps away from the fixed part that one side of vibration portion extends and by the fixed part is kept away from convex rib in one side of magnetic circuit, the protecgulum lid is located the rib is kept away from one side of fixed part. Compared with the prior art, the utility model discloses a sounding device acoustic performance is better.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

With the advent of the internet era, the number of mobile terminal devices has increased. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. Sound production devices for playing sounds such as music are widely used in mobile terminal devices such as mobile phones, and a vibration system in the sound production devices is particularly important, and the whole sound production device produces sound through vibration of the vibration system.

The sound production device comprises a vibration system and a drive, wherein the vibration system is used for vibrating and producing sound, the vibration system comprises a vibrating diaphragm, the sound production device further comprises a cover, the vibrating diaphragm is far away from a front cover on one side of the magnetic system, the front cover is provided with a sound production port penetrating through the front cover, the vibrating diaphragm comprises a vibration part, a folded ring part and a fixing part, the folded ring part extends in a bending mode, the outer periphery of the vibration part, the folding ring part extends in a bending mode, the fixing part extends on one side of the vibration part, and the front cover is arranged on the fixing part.

However, with the structure, when the sound generating device is pressed, the vibrating diaphragm is easy to deform, so that the sound generating device has noise and poor acoustic performance.

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

[ Utility model ] content

An object of the utility model is to provide a sound production device that acoustic performance is better.

In order to achieve the above object, the present invention provides a sound-producing device, which comprises a vibration system for generating sound by vibration and a magnetic circuit system for driving the vibration system to generate sound by vibration, wherein the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, the sound-producing device further comprises a front cover covering one side of the vibrating diaphragm away from the magnetic circuit system, the front cover is provided with a sound-producing opening penetrating through the front cover,

the vibrating diaphragm comprises a vibrating part, a folded ring part bent and extended from the outer periphery of the vibrating part, a fixed part extended from one side of the folded ring part far away from the vibrating part, and a reinforcing part protruding from one side of the magnetic circuit system far away from the fixed part, wherein the front cover is arranged on one side of the reinforcing part far away from the fixed part.

Preferably, the vibration part comprises a first through hole penetrating through the vibration part, the vibration system further comprises a first ball top attached to one side of the vibration part close to the magnetic circuit system, and the first ball top completely covers the first through hole.

Preferably, the part of the top of the first ball exposed to the first through hole is provided with second through holes penetrating through the first through hole and spaced from each other, and the sum of the diameters of all the second through holes is smaller than that of the first through hole; the vibration system further comprises a second ball top which is attached to the top of the first ball and is far away from the magnetic circuit system, and the second ball top completely covers all the second through holes and is located in the first through holes.

Preferably, the vibration system further includes a double-sided tape interposed between the second dome section and the first dome section, and the double-sided tape is disposed around the second through hole and bonds and fixes the first dome section and the second dome section.

Preferably, the diaphragm is made of a rubber material.

Preferably, the front cover includes a front cover plate disposed at an interval with the diaphragm and provided with the sounding port, and a sidewall extending from the periphery of the front cover plate to the diaphragm, wherein one end of the sidewall away from the front cover plate abuts against the reinforcement portion.

Preferably, the sound production device further comprises a basin frame for fixing the magnetic circuit system and the vibration system, and the fixing part is fixed on one side of the basin frame far away from the magnetic circuit system.

Preferably, the vibration system further comprises a support fixed on the basin frame, the auxiliary vibrating diaphragm is far away from one side of the vibrating diaphragm, the auxiliary vibrating diaphragm is attached to the elastic conductive piece, the elastic conductive piece is far away from one side of the basin frame, and the voice coil is far away from one side of the vibrating diaphragm and is electrically connected with the voice coil.

Preferably, the magnetic circuit system comprises a magnetic yoke fixed on one side of the basin frame far away from the vibrating diaphragm, a main magnetic steel assembly fixedly arranged on the magnetic yoke and an auxiliary magnetic steel assembly forming a magnetic gap with the main magnetic steel assembly at an interval, and the voice coil is suspended in the magnetic gap.

Compared with the prior art, the sound production device of the present invention, the vibrating diaphragm includes a vibrating portion, a folded ring portion extending from the outer periphery of the vibrating portion, a fixing portion extending from one side of the folded ring portion away from the vibrating portion, and a reinforcing portion protruding from one side of the fixing portion away from the magnetic circuit system, the front cover is disposed on one side of the reinforcing portion away from the fixing portion; by adopting the structure, the reinforcing part is convexly arranged on the vibrating diaphragm along the vibrating direction of the vibrating diaphragm, the edge cutting strength of the vibrating diaphragm can be enhanced by thickening the edge cutting of the vibrating diaphragm, the anti-deformation capability of the vibrating diaphragm is further improved, the vibrating diaphragm is not easy to swing, and the vibrating diaphragm is more stable; improve the noise of the sounding device and improve the acoustic performance of the sounding device.

[ 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 view of the three-dimensional structure of the sound device of the present invention

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

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

fig. 4 is an enlarged schematic view of B in fig. 3.

[ 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. 1-4, the present invention provides a sound-generating device 100, the sound-generating device 100 includes a basin frame 1, a vibration system 2 fixed to the basin frame 1 and used for vibrating sound, a magnetic circuit system 3 driving the vibration system 2 to vibrate sound, a front cover 4, and a conductive terminal 5, wherein the magnetic circuit system 3 has a magnetic gap 30.

Specifically, the vibration system 2 includes a vibrating diaphragm 21 fixed to the frame 1, a voice coil 25 inserted into the magnetic gap 30 to drive the vibrating diaphragm 21 to vibrate, a first ball top 22, a second ball top 23, a double-sided tape 24, an auxiliary vibrating diaphragm 26, and an elastic conductive member 27. It is also possible, of course, that the sound-generating device 100 is not provided with the frame 1, and that the diaphragm 21 is fixed to the magnetic circuit system 3.

The diaphragm 21 is made of a rubber material, and includes a vibrating portion 211, a folded ring portion 212 extending from the outer periphery of the vibrating portion 211 in a bent manner, a fixing portion 213 extending from a side of the folded ring portion 212 away from the vibrating portion 211, and a reinforcing portion 214 protruding from a side of the fixing portion 213 away from the magnetic circuit system 3, wherein the fixing portion 213 is fixed to a side of the frame 1 away from the magnetic circuit system 3.

Specifically, the vibrating portion 211 includes a first through hole 2110 penetrating therethrough, and the vibrating system 2 further includes a first dome portion 22 attached to a side of the vibrating portion 211 close to the magnetic circuit system 3, a second dome portion 23 disposed opposite to the first dome portion 22, and a double-sided tape 24. The first ball top 22 completely covers the first through hole 2110. The portion of the first ball top 22 exposed to the first through hole 2110 is provided with second through holes 220 penetrating therethrough and spaced apart from each other, and the sum of the diameters of all the second through holes 220 is smaller than the diameter of the first through hole 2110. The double-sided tape 24 is sandwiched between the second dome section 23 and the first dome section 22, is disposed around all the second through holes 220, and bonds and fixes the first dome section 22 and the second dome section 23; the second ball top portion 23 is attached to the first ball top portion 22 through the double-sided tape 24 and away from the magnetic circuit system 3, and the second ball top portion 23 completely covers all of the second through holes 220 and is located in the first through hole 2110.

Through the arrangement of the structure, the strength of the first ball top part 22 and the second ball top part 23 is enhanced, the vibration strength of the vibration part 211 is further improved, the vibration strength of the whole vibration system 22 is improved, and the acoustic performance is further improved; meanwhile, the first ball top part 22, the second ball top part 23 and the vibrating part 211 are arranged in a matched mode, so that the occupied space is small, and the space utilization rate is high.

The front cover 4 is arranged on one side of the vibrating diaphragm 21 far away from the magnetic circuit system 3 in a covering manner and is provided with a sounding port 41 penetrating through the vibrating diaphragm; specifically, the front cover 4 is disposed on a side of the reinforcing portion 214 away from the fixing portion 213, and includes a front cover plate 42 disposed at an interval with the diaphragm 21 and provided with the sound emitting port 41, and a sidewall 43 extending from a periphery of the front cover plate 42 to the diaphragm 21, where one end of the sidewall 43 away from the front cover plate 42 abuts against the reinforcing portion 214.

The voice coil 25 is inserted into the magnetic gap 30 and has a racetrack shape.

The auxiliary vibrating diaphragm 26 is fixed on the side, away from the vibrating diaphragm 21, of the basin frame 1, the elastic conductive piece 27 is attached to the side, away from the basin frame 1, of the auxiliary vibrating diaphragm 26, and the elastic conductive piece 27 is supported on the side, away from the vibrating diaphragm 21, of the voice coil 25 and is electrically connected with the voice coil 25.

The magnetic circuit system 3 comprises a magnetic yoke 31 fixed on one side of the basin frame 1 far away from the diaphragm 21, a main magnetic steel assembly 32 fixedly arranged on the magnetic yoke 31, and an auxiliary magnetic steel assembly 33 forming a magnetic gap 30 with the main magnetic steel assembly 32 at an interval, wherein the voice coil 25 is suspended in the magnetic gap 30.

The conductive terminal 5 is used for connecting the elastic conductive member 27 with an external electrical signal.

The utility model provides an above only do the embodiment of the utility model not consequently the restriction the patent scope of the utility model, all utilize the utility model discloses equivalent structure or equivalent flow transform that the content of description and drawing was done, or direct or indirect application is in other relevant technical field, all the same reason is included the utility model discloses an in the patent protection scope.

Claims

1. A sound production device comprises a vibration system for vibration sound production and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, the sound production device also comprises a front cover which is covered on one side of the vibrating diaphragm, which is far away from the magnetic circuit system, the front cover is provided with a sound production port which penetrates through the front cover, and the sound production device is characterized in that,

2. The sounder device according to claim 1, wherein the vibrating portion includes a first through hole extending therethrough, and the vibrating system further comprises a first dome attached to a side of the vibrating portion adjacent the magnetic circuit, the first dome completely covering the first through hole.

3. The sound production device as claimed in claim 2, wherein the portion of the top of the first ball exposed to the first through hole is provided with second through holes penetrating therethrough and spaced from each other, and the sum of the diameters of all the second through holes is smaller than that of the first through hole; the vibration system further comprises a second ball top which is attached to the top of the first ball and is far away from the magnetic circuit system, and the second ball top completely covers all the second through holes and is located in the first through holes.

4. The sound production device as claimed in claim 3, wherein the vibration system further comprises a double-sided adhesive tape interposed between the second dome section and the first dome section, the double-sided adhesive tape being disposed around the second through hole and adhesively securing the first dome section and the second dome section.

5. The sound production device of claim 1, wherein the diaphragm is made of a rubber material.

6. The sounding device according to claim 1, wherein the front cover includes a front cover spaced apart from the diaphragm and provided with the sounding port, and a sidewall extending from a periphery of the front cover to the diaphragm, wherein an end of the sidewall away from the front cover abuts against the reinforcement portion.

7. The sounder device according to claim 1, further comprising a frame for holding the magnetic circuit system and the vibration system, wherein the holding portion is secured to a side of the frame remote from the magnetic circuit system.

8. The sounding device according to claim 7, wherein the vibration system further comprises an auxiliary diaphragm fixed to a side of the frame away from the diaphragm, and an elastic conductive member attached to a side of the auxiliary diaphragm away from the frame, the elastic conductive member being supported by a side of the voice coil away from the diaphragm and electrically connected to the voice coil.

9. The sound production device as claimed in claim 7, wherein the magnetic circuit system comprises a magnetic yoke fixed on a side of the frame away from the diaphragm, a main magnetic steel component fixedly arranged on the magnetic yoke, and a secondary magnetic steel component spaced from the main magnetic steel component to form a magnetic gap, and the voice coil is suspended in the magnetic gap.