CN212811995U

CN212811995U - Sound production device

Info

Publication number: CN212811995U
Application number: CN202021265039.3U
Authority: CN
Inventors: 梁平; 赵彬
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-26
Anticipated expiration: 2030-06-30
Also published as: WO2022000778A1

Abstract

The utility model provides a sounding device, it includes the basin frame and is fixed in the vibrating diaphragm of basin frame, the vibrating diaphragm includes the dome and encircles the book ring that the dome set up, roll over the ring and include the connecting portion of being connected with the dome, the book ring portion of outwards buckling the extension by the periphery of connecting portion and by the fixed part that the book ring portion extends to basin frame direction, the fixed part includes the roof that extends by book ring portion and the periphery wall that extends along the periphery side of basin frame by one side that the roof kept away from book ring portion, the fixed part still includes the internal perisporium that extends along the internal periphery of basin frame by the roof, internal perisporium and periphery wall interval set up, the roof, internal perisporium and periphery wall enclose into the fixed slot jointly, basin frame at least part inserts the fixed slot and butt is fixed in the roof, the periphery and the periphery wall bonding fixation that the basin frame inserted fixed slot portion, the basin frame inserts the. Compared with the prior art, the utility model discloses a sound production device's good reliability.

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 of the related art includes a frame and a diaphragm fixed to the frame; the vibrating diaphragm includes connecting portion, by the outside hem ring portion that extends of periphery of connecting portion and by hem ring portion to the fixed part that the basin frame direction extends, the fixed part bonding is fixed in the basin frame. For good gluing effect, the fixing parts are respectively fixed on one end of the basin frame and the outer side surface connected with the end in an adhering mode.

However, in the sound device in the related art, in order to make the internal space larger in the miniaturized sound device to realize larger internal components and magnetic circuits, the tub support is generally made of a steel ring. The edge width of the structure adopting the steel ring is narrower than that of the traditional basin stand, and the width limit of the steel ring is generally about 0.1 to 0.3 mm. Therefore, the structural synchronization of the steel rings brings the risk that the diaphragm and the steel rings are not firmly glued. The result of a reliability experiment shows that the gluing part of the steel ring and the front face of the vibrating diaphragm is easy to open and separate, so that the vibrating diaphragm collides with the steel ring to generate noise, and the sound generating device fails.

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 good reliability.

In order to achieve the above object, the present invention provides a sound production device, which comprises a frame and a vibrating diaphragm fixed on the frame, wherein the vibrating diaphragm comprises a dome and a folded ring surrounding the dome, the folded ring comprises a connecting portion connected with the dome, a folded ring portion extending from the periphery of the connecting portion to the outside and a fixing portion extending from the folded ring portion to the frame direction, the fixing portion comprises a top wall extending from the folded ring portion, an outer peripheral wall extending from one side of the top wall away from the folded ring portion along the outer peripheral side of the frame, and an inner peripheral wall extending from the top wall along the inner peripheral side of the frame, the inner peripheral wall and the outer peripheral wall are arranged at intervals, the top wall, the inner peripheral wall and the outer peripheral wall jointly form a fixing groove, and the frame is at least partially inserted into the fixing groove and fixed on the top wall by abutting, the basin frame inserts the periphery of fixed slot part with the periphery wall bonding is fixed, the basin frame inserts the internal periphery of fixed slot part with interior perisporium bonding is fixed.

Preferably, the inner circumferential wall is a rectangular structure with rounded corners, the inner circumferential wall includes four rounded corners and four straight sides respectively connected to two adjacent rounded corners, and the thickness of each rounded corner is greater than that of each straight side.

Preferably, the thickness of the straight edge portion gradually decreases from a portion thereof connected to the top wall toward a direction away from the top wall.

Preferably, the top wall is disposed perpendicular to the inner circumferential wall and the outer circumferential wall, respectively.

Preferably, the basin frame is fixedly bonded with the inner peripheral wall and the outer peripheral wall in a mode of injecting glue at the same time.

Preferably, the diaphragm is made of a high polymer material.

Preferably, the diaphragm is made of silica gel or rubber.

Preferably, the thickness of the basin stand ranges from 0.1mm to 0.3 mm.

Preferably, the basin stand is made of an annular steel ring.

Preferably, the connecting part is provided with a through hole penetrating through the connecting part, and the dome is attached to and fixed on the connecting part and covers the through hole.

Compared with the prior art, the utility model discloses a sounder will set up the fixed slot through the fixed part with the vibrating diaphragm, and the fixed slot is enclosed by the roof, internal perisporium and the periphery wall of fixed part jointly to will state basin frame at least part and insert fixed slot and butt in the roof, and insert the periphery and the periphery wall bonding of fixed slot part through the basin frame and fix, the basin frame inserts the internal week and the internal perisporium bonding of fixed slot part are fixed. The structure effectively increases the gluing contact surface of the vibrating diaphragm and the basin frame, and improves the gluing strength, thereby reducing the risk of separating the opening of the gluing surface of the vibrating diaphragm and the basin frame; in addition, from the perspective of mold structure design, the structure can reduce the risk of glue overflow on the inner side of the basin frame in the integral molding process. In conclusion, the utility model discloses a sound production device's good reliability.

[ 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 C in FIG. 3;

FIG. 5 is a sectional view taken along line B-B of FIG. 1;

FIG. 6 is an enlarged view of the portion indicated at D in FIG. 5;

fig. 7 is a schematic perspective view of a diaphragm of the sound device of the present invention;

fig. 8 is a schematic view of the three-dimensional assembly structure of the vibrating diaphragm and the basin frame of the sound generating 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. 1-8, the present invention provides a sound generating device 100, which includes a basin frame 1, and a vibration system 2 and a magnetic circuit system 3 respectively supported on the basin frame 1, wherein the magnetic circuit system 3 drives the vibration system 2 to vibrate and generate sound.

In the present embodiment, the thickness of the frame 1 ranges from 0.1mm to 0.3 mm. The edge width of the steel ring structure within the thickness range is narrower than that of the traditional basin frame structure, so that the sound production device 100 is more beneficial to enabling the inner space to be larger.

Preferably, the basin stand 1 is made of an annular steel ring. It is advantageous to have a larger internal space in the sound production device 100 to achieve a larger internal component and magnetic circuit.

The vibration system 2 is fixed on the basin frame 1. Specifically, the vibration system 2 comprises a vibrating diaphragm 4 fixed on the basin frame 1 and a voice coil 5 for driving the vibrating diaphragm 4 to vibrate and sound.

The diaphragm 4 comprises a dome 6 and a corrugated rim 7 arranged around the dome 6.

The folding ring 7 comprises a connecting part 71 connected with the top dome 6, a folding ring part 72 extending from the periphery of the connecting part 71 in an outward bending way, and a fixing part 73 extending from the folding ring part 72 to the direction of the basin stand 1.

The connecting portion 71 is provided with a through hole 710 penetrating through the connecting portion, and the dome 6 is attached to and fixed to the connecting portion 71 and covers the through hole 710. The dome 6 contributes to increasing the rigidity of the connection 71.

The fixing portion 73 includes a top wall 731 extending from the ring-folded portion 72, an outer peripheral wall 732 extending from a side of the top wall 731 away from the ring-folded portion 72 along an outer peripheral side of the frame 1, and an inner peripheral wall 733 extending from the top wall 731 along an inner peripheral side of the frame 1.

The top wall 731 is fixed to one end of the frame 1. In particular, the top wall 731 is fixed to an end of the frame 1 remote from the magnetic circuit 3. The outer peripheral wall 732 is fixed to the outside of the frame 1 by adhesion. The inner peripheral wall 733 is bonded and fixed to the inner side of the frame 1.

Specifically, the inner circumferential wall 733 and the outer circumferential wall 732 are provided at an interval. The top wall 731, the inner circumferential wall 733, and the outer circumferential wall 732 together define a fixing groove 730. The frame 1 is at least partially inserted into the securing slot 730 and secured against the top wall 731. The outer circumference of the part of the frame 1 inserted into the fixing groove 730 is adhered and fixed to the outer circumferential wall 732, and the inner circumference of the part of the frame 1 inserted into the fixing groove 730 is adhered and fixed to the inner circumferential wall 733. That is, opposite sides of the portion of the frame 1 inserted into the fixing groove 730 are respectively adhered and fixed to the inner circumferential wall 733 and the outer circumferential wall 732. The structure effectively increases the gluing contact surface of the vibrating diaphragm 4 and the basin frame 1, and improves the gluing strength, thereby reducing the risk of separating an opening of the gluing surface of the vibrating diaphragm 4 and the basin frame 1; in addition, from the perspective of mold structure design, the structure can reduce the risk of glue overflow on the inner side of the basin frame 1 during integral molding, so that the sound production device 100 has good reliability.

In this embodiment, the frame 1 is adhered to the inner peripheral wall 733 and the outer peripheral wall 732 by injecting glue at the same time. This process makes assembly of the sound device 100 simpler, thereby making the sound device 100 more reliable.

In the present embodiment, the inner circumferential wall 733 has a rectangular structure with rounded corners. Specifically, the inner circumferential wall 733 includes four rounded portions 7331 and four straight portions 7332 connected to two adjacent rounded portions 7331, respectively. The rounded portions 7331 have a thickness greater than that of the straight portions 7332. The overall thickened structure of the round part 7331 can increase the rigidity of the diaphragm 4, thereby improving the rigidity of the sound-producing device 100 and improving the performance of the sound-producing device 100; and simultaneously reduces the risk of membrane rupture at the position of the round part 7331 of the diaphragm 4, thereby improving the reliability of the sound production device 100.

In order to increase the internal volume of the sound device 100, the components and magnetic circuit inside the sound device 100 are enlarged. In this embodiment, the thickness of the straight portion 7332 gradually decreases from the portion where the straight portion is connected to the top wall 731 toward a direction away from the top wall 731. In this embodiment, the straight portion 7332 is designed to have a reverse triangle shape.

To simplify the manufacture and assembly of the sound device 100 and to improve reliability. In the present embodiment, the top wall 731 is provided perpendicular to the inner circumferential wall 733 and the outer circumferential wall 732, respectively. This structure allows the inner circumferential wall 733 and the outer circumferential wall 732 to be parallel to each other, thereby facilitating the insertion of the tub holder 1 into the fixing groove 730 and facilitating the subsequent adhesive fixing of the inner circumferential wall 733 and the outer circumferential wall 732 to opposite sides of a portion of the tub holder 1 inserted into the fixing groove 730.

In this embodiment, the diaphragm 4 is made of a polymer material. Specifically, the vibrating diaphragm 4 is made of silica gel or rubber. The vibrating diaphragm 4 made of the material is beneficial to processing and assembling while ensuring the acoustic performance.

The magnetic circuit system 3 comprises a magnetic yoke 31 fixed on the basin stand 1 and arranged on one side opposite to the upper vibrating diaphragm 4, and a main magnetic steel 32 and an auxiliary magnetic steel 33 fixed on the magnetic yoke 31 respectively, wherein the auxiliary magnetic steel 33 is arranged on two opposite sides of the main magnetic steel 32 and forms the magnetic gap 30 with the main magnetic steel 32 at an interval.

The voice coil 5 is inserted into the magnetic gap 30, and the magnetic circuit system 3 drives the voice coil 5 to drive the diaphragm 4 to vibrate and sound through the magnetic gap 30.

In the present embodiment, the magnetic circuit system 3 further includes an annular clamping plate 34 stacked on the secondary magnetic steel 33. The clamp plate 34 is supported and fixed to the yoke 31. One end of the frame 1, which is far away from the vibrating diaphragm 4, is fixed on the clamping plate 34. This structure allows the magnetic circuit system 3 to be fixed to the frame 1.

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 sounder which comprises a basin frame and a vibrating diaphragm fixed on the basin frame, wherein the vibrating diaphragm comprises a ball top and a folding ring arranged around the ball top, the folding ring comprises a connecting part connected with the ball top, a folding ring part extending from the periphery of the connecting part in an outward bending way and a fixing part extending from the folding ring part to the basin frame direction, the fixing part comprises a top wall extending from the folding ring part and a peripheral wall extending from one side of the top wall far away from the folding ring part along the peripheral side of the basin frame, the sounder is characterized in that the fixing part further comprises an inner peripheral wall extending from the top wall along the inner peripheral side of the basin frame, the inner peripheral wall and the peripheral wall are arranged at intervals, the top wall, the inner peripheral wall and the peripheral wall jointly enclose a fixing groove, at least part of the basin frame is inserted into the fixing groove and is abutted against and fixed on the top wall, the basin frame inserts the periphery of fixed slot part with the periphery wall bonding is fixed, the basin frame inserts the internal periphery of fixed slot part with interior perisporium bonding is fixed.

2. The sounder device according to claim 1, wherein the inner peripheral wall has a rectangular configuration with rounded corners, the inner peripheral wall comprising four rounded corners and four straight sides respectively connecting adjacent two of the rounded corners, and the rounded corners have a thickness greater than that of the straight sides.

3. The sounder device according to claim 2, wherein the thickness of the straight edge portion gradually decreases from the portion thereof connected to the top wall toward a direction away from the top wall.

4. The sounder device according to claim 1, wherein the top wall is disposed perpendicular to the inner and outer peripheral walls, respectively.

5. The sound production device as claimed in claim 1, wherein the frame is adhesively secured to the inner and outer peripheral walls by means of glue.

6. The sounding device according to claim 1, wherein the diaphragm is made of a polymer material.

7. The sounding device according to claim 6, wherein the diaphragm is made of silica gel or rubber.

8. The sounder device according to claim 1, wherein the thickness of the frame ranges from 0.1mm to 0.3 mm.

9. The sounder device according to claim 8, wherein the frame is a rectangular steel ring.

10. The sound production device as claimed in claim 1, wherein the connecting portion has a through hole extending therethrough, and the dome is affixed to the connecting portion and covers the through hole.