CN212812015U

CN212812015U - Sound production device

Info

Publication number: CN212812015U
Application number: CN202021296040.2U
Authority: CN
Inventors: 梁平; 赵彬
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-26
Anticipated expiration: 2030-07-02
Also published as: WO2022000777A1

Abstract

The utility model provides a sounder, it includes vibrating diaphragm and drive the magnetic circuit of vibrating diaphragm vibration sound production, the vibrating diaphragm include the vibration portion, by the outside book ring portion that extends of periphery of vibration portion, by book ring portion is outwards kept away from fixed part and the laminating that the vibration portion direction extends are fixed in the ball top of vibration portion, the vibrating diaphragm still include certainly the portion of borduring that the vibration portion protrusion formed, certainly the step form of portion of borduring is formed with the step poor, the ball top is acceptd and is fixed in poor interior and lie in the step portion of borduring keeps away from one side of book ring portion. 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.

Related art the sound production device includes that it includes the basin frame and is fixed in the vibrating diaphragm and the drive of basin frame the magnetic circuit of vibrating diaphragm vibration sound production, the vibrating diaphragm include vibration portion, by the outside book ring portion that extends of periphery of vibration portion and by book ring portion to the fixed part that the basin frame direction extends and be fixed in the ball top of vibration portion, the ball top subsides are established and are fixed in vibration portion.

However, in the related art, the vibration part of the sound generating device is fixed to the dome by gluing, and therefore, there is a risk that glue on the gluing surface of the dome and the vibration part easily overflows to the folded ring part. For example, on the curved surface of the folded ring part, thereby affecting the performance of the sounding device; and this risk is a risk of foreign matter being generated inside the sound producing device during the manufacturing process and at a later stage of use. In addition, the blank area of the gluing of the ball top and the vibration part is a weak point of the structure, so that the risk of breaking is easy to occur, and the performance and the reliability of the sounding device are influenced.

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 utility model provides a sounding device, it includes vibrating diaphragm and drive the magnetic circuit of vibrating diaphragm vibration sound production, the vibrating diaphragm include the vibration portion, by the outside book ring portion that extends of periphery of vibration portion, by book ring portion is outwards kept away from the fixed part and the laminating that the vibration portion direction extends are fixed in the ball top of vibration portion, the vibrating diaphragm still include certainly the portion of borduring of vibration portion protrusion formation, certainly the step form of portion of borduring step is formed with the step poor, the ball top is acceptd and is fixed in the step is poor and is located the portion of borduring keeps away from one side of book ring portion.

Preferably, the edge wrapping part is formed by protruding from the connection part of the vibrating part and the bending ring part.

Preferably, the edge covering part is of a rectangular structure with round corners, the edge covering part comprises four round corners and four straight side parts respectively connected with the two adjacent round corners, and the height of each round corner is greater than that of each straight side part.

Preferably, the dome is flush with the straight edge portion in a direction perpendicular to the vibration direction of the diaphragm.

Preferably, the dome is fixed in abutment with the brim portion.

Preferably, the vibrating portion is provided with a through hole penetrating therethrough, and the dome completely covers the through hole.

Preferably, one side of the dome close to the vibrating portion is formed with a concave portion, and the concave portion is attached to and fixed to the vibrating portion.

Compared with the prior art, the utility model discloses a vocal device will be through the portion of borduring with vibrating diaphragm self-oscillation portion protrusion formation to it is poor to set up the portion of borduring and be the step form and form the step, and accept the ball top in the step is poor and lie in the portion of borduring and keep away from one side of the portion of borduring. The excessive gluey problem of this structure effective control ball top during with the veneer of vibration portion for glue non-staining turns over the curved surface of portion, reduces manufacturing process and later stage and has the risk to the inside foreign matter that produces of sound production device, avoids the phenomenon that the performance is bad to appear in the sound production device, and improves sound production device and beats gluey gluing state outward appearance uniformity, still increases the regional structural strength of ball top and vibration portion veneer, thereby makes 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 B in FIG. 3;

fig. 5 is a schematic three-dimensional structure view of the diaphragm of the sound device of the present invention;

fig. 6 is a schematic perspective view of the acoustic device according to the present invention, with the diaphragm removed from the top of the ball removed;

FIG. 7 is a cross-sectional view of another embodiment of FIG. 3;

FIG. 8 is an enlarged view of the portion indicated by C in FIG. 7;

fig. 9 is a schematic perspective view of a diaphragm with a dome removed from the sounding device according to another embodiment of fig. 7.

[ 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 basin frame 1, and a vibration system 20 and a magnetic circuit system 3 respectively supported on the basin frame 1, wherein the magnetic circuit system 3 drives the vibration system 20 to vibrate and generate sound.

The basin stand 1 is used for supporting the vibration system 20 and the magnetic circuit system 3. Of course, without being limited thereto, it is also possible that the frame 1 is replaced by a yoke or pole core of the magnetic circuit system 3. In this embodiment, the frame 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.

More preferably, the thickness of the basin stand 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.

The vibration system 20 is fixed on the basin stand 1. Specifically, the vibration system 20 includes a diaphragm 2 fixed to the frame 1 and a voice coil 202 for driving the diaphragm 2 to vibrate and generate sound.

The vibrating diaphragm 2 includes a vibrating portion 21, a corrugated portion 22 extending outward from the periphery of the vibrating portion 21, a fixing portion 23 extending from the corrugated portion 22 in a direction away from the vibrating portion 21, a dome 24 attached to and fixed to the vibrating portion 21, and a brim portion 25 formed by protruding from the vibrating portion 21.

In this embodiment, the vibrating portion 21 is provided with a through hole 200 penetrating therethrough, and the dome 24 is attached to and fixed to the vibrating portion 21 and completely covers the through hole 200. The dome 24 contributes to increase in rigidity of the vibrating portion 21. The edge covering part 25 is stepped to form a step difference 210. The top dome 24 is accommodated in the step difference 210 and is located on one side of the edge wrapping portion 25 away from the bending ring portion 22.

The edge wrapping portion 25 is formed to protrude from a connection portion of the vibrating portion 21 and the loop portion 22. So set up, the effectual weak region of structure when having eliminated among the prior art dome and vibrating diaphragm veneer and being connected has solved the problem of folding easily when vibrating diaphragm vibrates. In the present embodiment, the brim portion 25 is formed by protruding the vibration portion 21 on the side closer to the magnetic circuit system 3. The dome 24 is attached to the vibrating portion 21 on a side close to the magnetic circuit system 3.

The dome 24 is fixed in abutment with the brim portion 25. In the present embodiment, the periphery of the dome 24 is in contact with the inside of the hem portion 25 and fixed by glue. Specifically, the dome 24 is fixed to the vibrating portion 21 by injecting glue into the step 210. This structure is favorable to increasing the dome 24 with the adhesion force between the vibration portion 21 to strengthen this combination regional structural strength, prevent the risk of appearing the discount, simultaneously effective control the dome 24 with excessive gluey problem during the veneer of vibration portion 21 makes glue not pollute the curved surface of dog-ear portion 22 reduces manufacturing process and later stage and has right the inside risk that produces the foreign matter of sounder 100, thereby avoids the phenomenon of bad performance appears in sounder 100, improves sounder 100 beats gluey glue state outward appearance uniformity, thereby improves sounder 100's performance and reliability.

In the present embodiment, a relief portion 241 is formed by recessing the dome 24 on the side closer to the vibrating portion 21. The positioning portion 241 is attached to and fixed to the vibrating portion 21. This structure is advantageous for the size of the diaphragm 2 in its vibration direction to be smaller, which is advantageous for the sound production device to be miniaturized.

In the present embodiment, the edge wrapping portion 25 has a rectangular structure with rounded corners, and the edge wrapping portion 25 includes four rounded corners 251 and four straight portions 252 connected to two adjacent rounded corners 251. The rounded portion 251 has a height greater than that of the straight portion 252. The height is here referred to as the dimension in the direction of vibration of the diaphragm 2. The stress at the position of the rounded portion 251 is large, and the separation of the dome 24 from the vibrating portion 21, that is, the bending of the diaphragm 2, is likely to occur at this position, and the overall thickened structure of the rounded portion 251 can increase the rigidity of the vibrating portion 21 of the diaphragm 2, thereby improving the rigidity of the sound-generating device 100 and improving the performance of the sound-generating device 100; and simultaneously reduces the risk of membrane rupture at the position of the round corner 251 of the diaphragm 2, thereby improving the reliability of the sound production device 100. In addition, when injecting glue, the glue is generally more positioned at the rounded portion 251 than at the straight edge portion 252, so that the rounded portion 251 forms a higher retaining wall to intercept the glue, which is beneficial to improving the reliability of the sound generating device 100.

The dome 24 is flush with the straight edge portion 252 in a direction perpendicular to the vibration direction of the diaphragm 2. In this embodiment, the side of the dome 24 close to the magnetic circuit system 3 and the side of the straight edge portion 252 close to the magnetic circuit system 3 are located on the same plane, so that the acoustic performance of the sound production device 100 is good, and the assembly is also facilitated.

In this embodiment, the diaphragm 2 is made of a polymer material. Specifically, the vibrating diaphragm 2 is made of silica gel or rubber. The vibrating diaphragm 2 made of the material is beneficial to processing and assembling while the acoustic performance is guaranteed.

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 2, 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 202 is inserted into the magnetic gap 30, and the magnetic circuit system 3 drives the voice coil 202 to drive the diaphragm 2 to vibrate and generate 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 basin stand 1 far away from the vibrating diaphragm 2 is fixed on the clamping plate 34. This structure allows the magnetic circuit system 3 to be fixed to the frame 1.

Referring to fig. 7-9, fig. 7-9 show another embodiment of the present invention, which provides another sound-generating device 100a, the sound-generating device 100a is substantially the same as the sound-generating device 100, and the main difference between the two embodiments is: the bonding position of the ball top and the vibration part is different.

In the sound-producing device 100a, the edge-wrapping portion 25a is formed by protruding the vibrating portion 21a on the side away from the magnetic circuit system 3a, and the dome 24a is attached to the vibrating portion 21a on the side away from the magnetic circuit system 3 a. The structure enables the glue positions of the ball top 24a and the vibrating part 21a to be positioned at the outer side of the sounding device 100a, and is beneficial to reducing the risk of generating foreign matters inside the sounding device 100a in the manufacturing process and later period.

Specifically, a side of the dome portion 24a away from the magnetic circuit system 3a and a side of the brim portion 25a away from the magnetic circuit system 3a are located on the same plane. This configuration facilitates the acoustic performance of the sound device 100a while also facilitating assembly and processing.

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. The utility model provides a sounder, its includes vibrating diaphragm and drive the magnetic circuit of vibrating diaphragm vibration sound production, the vibrating diaphragm include the vibration portion, by the outside book ring portion that extends of periphery of vibration portion, by book ring portion is to keeping away from fixed part and the laminating that the vibration portion direction extends are fixed in the ball top of vibration portion, a serial communication port, the vibrating diaphragm still include certainly the portion of borduring of vibration portion protrusion formation, certainly the step of portion of borduring step is formed with the step poor, the ball top is acceptd and is fixed in the step is poor and be located the portion of borduring is kept away from one side of book ring portion.

2. The sounding device according to claim 1, wherein the edge wrapping portion is formed protruding from a connection of the vibrating portion and the collar portion.

3. The sounding device according to claim 1, wherein the edge covering portion is a rectangular structure with rounded corners, the edge covering portion comprises four rounded corners and four straight edges respectively connected with two adjacent rounded corners, and the heights of the rounded corners are greater than those of the straight edges.

4. The sounding device according to claim 3, wherein the dome is flush with the straight edge portion in a direction perpendicular to the diaphragm vibration direction.

5. The sounder device according to claim 1, wherein the dome is secured in abutting relation to the hem portion.

6. The sounder device according to claim 1, wherein the vibrating portion has a through hole therethrough, and the dome completely covers the through hole.

7. The sounding device as claimed in claim 1, wherein a recess is formed on a side of the dome adjacent to the vibrating portion, and the recess is attached to the vibrating portion.