CN110366073B

CN110366073B - Sound production device

Info

Publication number: CN110366073B
Application number: CN201910478021.7A
Authority: CN
Inventors: 肖波; 刘晓东; 令狐荣林
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2021-06-15
Anticipated expiration: 2039-06-03
Also published as: CN110366073A

Abstract

The invention provides a sounding device which comprises a basin frame, a vibration system, a magnetic circuit system, a breathable damping part and a leakage hole, wherein the vibration system is respectively fixed on the basin frame; vibration system is including being fixed in the vibrating diaphragm of basin frame, magnetic circuit is including being fixed in the yoke of basin frame, the basin frame the vibrating diaphragm and the sound production inner chamber is enclosed into jointly to the yoke, let out the leakage hole will sound production inner chamber and external intercommunication, ventilative damping piece is fixed in basin frame and complete cover let out the leakage hole, the yoke accept in the ventilative damping piece. Compared with the related art, the sounding device provided by the invention is simple in manufacturing process and high in reliability.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of electroacoustic conversion, in particular to a sounding device applied to a portable electronic 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 the basin frame, is fixed in respectively the vibration system and the drive of basin frame the magnetic circuit and the damping piece of vibration system vibration sound production, vibration system is including being fixed in the vibrating diaphragm of basin frame, magnetic circuit is including being fixed in the yoke of basin frame, the damping piece is fixed in simultaneously the basin frame with the yoke, just the basin frame the vibrating diaphragm the yoke and the damping piece encloses into the sound production inner chamber jointly.

However, in the sound generating device in the related art, since the damping member is fixed to the tub frame and the magnetic yoke at the same time, when the sound generating device is manufactured, the contact positions of the damping member, the tub frame and the magnetic yoke need to be glued to form a seal. However, glue is applied to a plurality of contact positions, so that the manufacturing process is complicated, glue overflow at a plurality of positions is easy to occur, the sealing performance and the reliability are directly influenced, and the acoustic improvement of the sound production device is limited.

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

[ summary of the invention ]

The present invention is to overcome the above technical problems and to provide a sound generating device with simple manufacturing process and high reliability.

In order to achieve the purpose, the invention provides a sounding device which comprises a basin frame, a vibration system, a magnetic circuit system, a ventilation damping part and a leakage hole, wherein the vibration system is respectively fixed on the basin frame; vibration system is including being fixed in the vibrating diaphragm of basin frame, magnetic circuit is including being fixed in the yoke of basin frame, the basin frame the vibrating diaphragm and the sound production inner chamber is enclosed into jointly to the yoke, let out the leakage hole will sound production inner chamber and external intercommunication, ventilative damping piece is fixed in basin frame and complete cover let out the leakage hole, the yoke accept in the ventilative damping piece.

Preferably, the leakage hole comprises a first leakage hole communicated with the sounding inner cavity, the frame comprises a frame body supporting the vibrating diaphragm and a supporting wall extending from the frame body to a direction far away from the vibrating diaphragm, and the magnet yoke is fixed on the supporting wall and surrounds the frame body at an interval to form the first leakage hole; the breathable damping piece is fixed on one side, far away from the vibrating diaphragm, of the basin frame body and completely covers the magnet yoke and the first leakage hole.

More preferably, ventilative damping piece includes the diapire, by the lateral wall that the diapire periphery was buckled and is extended and keep away from by the lateral wall the one end of diapire is buckled and is extended fixed wall, the diapire laminate in the yoke outside, the lateral wall surround in the support wall outside sets up and covers completely first leakage hole, the fixed wall is fixed in the basin frame is kept away from one side of vibrating diaphragm.

Preferably, the leakage hole further comprises a second leakage hole penetrating through the magnet yoke and communicated with the sounding inner cavity, and the bottom wall completely covers the second leakage hole.

Preferably, the fixing wall extends from the side wall to a direction away from the magnetic circuit system.

Preferably, the fixing wall extends from the side wall to a direction close to the magnetic circuit system.

Preferably, the sounding device further comprises a sealing ring, and the sealing ring is sleeved on the supporting wall and clamped between the fixing wall and the basin frame body.

Preferably, the sealing ring is fixed on one side of the basin stand body, which is far away from the vibrating diaphragm, and the fixing wall is fixed on one side of the sealing ring, which is far away from the basin stand body, in a gluing manner.

Compared with the prior art, the sounding device is provided with the sounding inner cavity and the leakage hole, the sounding inner cavity is communicated with the outside through the leakage hole, the breathable damping piece is fixed on the basin frame and completely covers the leakage hole, and the magnet yoke is contained in the breathable damping piece. The structure enables the breathable damping piece to be a breathable damping piece which is formed in a fully-surrounded three-dimensional mode, and the breathable damping piece and the basin frame directly form a fully-surrounded package, so that the needed glue filling and sealing procedures are few, the manufacturing process is simple, and the reliability of the sounding device is effectively improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic perspective view of a sound device according to the present invention;

FIG. 2 is a schematic perspective view of another angle of the sound device of the present invention;

FIG. 3 is an exploded perspective view of the sound device of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is a schematic view of an assembly structure of the frame and the yoke of the sound device of the present invention;

FIG. 6 is a schematic view of an assembly structure of the sounder device according to another angle between the frame and the yoke;

fig. 7 is an exploded perspective view of the air-permeable damping member of the sound device of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, fig. 1 is a schematic perspective view of a sound generating device according to the present invention; FIG. 2 is a schematic perspective view of another angle of the sound device of the present invention; FIG. 3 is an exploded perspective view of the sound device of the present invention; FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2; FIG. 5 is a schematic view of an assembly structure of the frame and the yoke of the sound device of the present invention; FIG. 6 is a schematic view of an assembly structure of the sounder device according to another angle between the frame and the yoke; fig. 7 is an exploded perspective view of the air-permeable damping member of the sound device of the present invention. The invention provides a sounding device 100, which comprises a basin frame 1, a vibration system 2, a magnetic circuit system 3, a breathable damping part 4, a leakage hole 5, a sealing ring 6 and an upper cover 7.

The frame 1 comprises a frame body 11 and a support wall 12 formed by extending the frame body 11. The support wall 12 is used for fixing the magnetic circuit system 3.

The vibration system 2 is fixed on the basin stand 1. Specifically, the vibration system 2 includes a diaphragm 21 fixed to the frame 1.

The magnetic circuit system 3 is fixed on the basin stand 1. The magnetic circuit system 3 drives the vibration system 2 to vibrate and produce sound. Specifically, the magnetic circuit system 3 includes a magnetic yoke 31 fixed to the frame 1. The basin stand 1, the diaphragm 21 and the magnet yoke 31 together enclose a sound-emitting inner cavity 10. The yoke 31 is housed in the air-permeable damper 4.

The breathable damping piece 4 is fixed on the basin frame 1. Specifically, the air-permeable damping member 4 is fixed on one side of the basin stand 1 far away from the vibrating diaphragm 21. The basin stand 1, the vibrating diaphragm 21 and the air-permeable damping part 4 jointly enclose a sound-producing inner cavity 10.

The leakage hole 5 communicates the sounding inner cavity 10 with the outside. In the present embodiment, the leak hole 5 includes a first leak hole 51 and a second leak hole 52.

The first leakage hole 51 is communicated with the sounding inner cavity 10.

In the present embodiment, the frame 1 includes a frame body 11 supporting the diaphragm 21, and a support wall 12 extending from the frame body 11 in a direction away from the diaphragm 21. The magnetic yoke 31 is fixed on the support wall 12 and encloses the first leakage hole 51 with the basin stand body 11 at a distance. The air-permeable damping member 4 is fixed on the side of the frame body 11 far away from the diaphragm 21 and completely covers the magnetic yoke 31 and the first leakage hole 51.

The leakage hole 5 further includes a second leakage hole 52 penetrating the yoke 31 and communicating with the sounding inner chamber 10,

in the present embodiment, the air-permeable damping member 4 is fixed to the tub frame 1 and completely covers the leakage hole 5. The breathable damping piece 4 is a breathable damping piece which is formed in a fully-surrounded three-dimensional mode, and is directly packaged in a fully-surrounded mode with the basin stand 1. The structure is matched with the breathable damping part 4 and the basin frame body 11 to form a sealing structure, and meanwhile, the process of glue filling and sealing can be simpler, the required glue filling and sealing process is less, the manufacturing process is simple, and the reliability of the sounding device is effectively improved.

Specifically, the air-permeable damping member 4 includes a bottom wall 41, a side wall 42, and a fixing wall 43.

The bottom wall 41 completely covers the second leakage hole 52. The bottom wall 41 is attached to the outside of the yoke 31.

A side wall 42 extending from the periphery of the bottom wall 41. The side wall 42 is disposed around the outside of the support wall 12 and completely covers the first leakage hole 51.

The fixing wall 43 is bent and extended from an end of the side wall 42 away from the bottom wall 41. The fixed wall 43 is fixed on the side of the basin stand 1 away from the diaphragm 21.

In the present embodiment, the fixed wall 43 extends from the side wall 42 toward the magnetic circuit system 3. This configuration is advantageous in that the overall volume of the sound device 100 is small. Of course, without limitation, the fixing wall 43 may extend from the side wall 42 in a direction away from the magnetic circuit system 3, and the air-permeable damping member 4 and the frame 1 may directly form a fully enclosed package.

In order to better fix the air-permeable damping member 4 to the frame 1 during the manufacturing process. The sounder device 100 also includes the sealing ring 6. Specifically, the sealing ring 6 is sleeved on the supporting wall 12 and clamped between the fixing wall 43 and the frame body 11. The sealing ring 6 is arranged on the basin frame body 11 of the basin frame 1 to form a positioning mark, so that the breathable damping part 4 is better fixed on the basin frame 1 during manufacturing. In the present embodiment, the sealing ring 6 is fixed to the side of the frame body 11 away from the diaphragm 21 by gluing, and the fixing wall 43 is fixed to the side of the sealing ring 6 away from the frame body 11 by gluing.

The sound production device 100 further comprises an upper cover 7 fixed on the basin frame 1 and arranged opposite to the air-permeable damping part 4, wherein the upper cover 7 is fixed on one side of the basin frame body 11 far away from the vibrating diaphragm 21 and is pressed on the vibrating diaphragm 21.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. A sounding device comprises a basin frame, a vibration system, a magnetic circuit system, a ventilation damping part and a leakage hole, wherein the vibration system is respectively fixed on the basin frame; the vibration system comprises a vibrating diaphragm fixed on a basin frame, the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, the vibrating diaphragm and the magnetic yoke jointly enclose a sounding inner cavity, and the sounding inner cavity is communicated with the outside through a leakage hole;

the basin frame is including supporting the basin frame body of vibrating diaphragm and by the basin frame body is to keeping away from the support wall that the vibrating diaphragm direction extends, ventilative damping piece include the diapire, by the diapire periphery is buckled the lateral wall that extends and is kept away from by the lateral wall the one end of diapire is buckled the fixed wall that extends, the diapire laminate in the yoke outside, the lateral wall encircle in support the wall outside and set up, fixed wall is fixed in the basin frame is kept away from one side of vibrating diaphragm.

2. The sound production device of claim 1, wherein the leakage hole comprises a first leakage hole communicating with the sound production lumen, and the magnetic yoke is fixed to the support wall and spaced from the frame body to define the first leakage hole; the breathable damping piece is fixed on one side, far away from the vibrating diaphragm, of the basin frame body and completely covers the magnet yoke and the first leakage hole.

3. The sounder device according to claim 2, wherein the sidewall completely covers the first leak hole.

4. The sounder device according to claim 3, wherein the leak hole further comprises a second leak hole extending through the yoke and communicating with the sounding internal cavity, the bottom wall completely covering the second leak hole.

5. A sounder device according to claim 3, wherein the fixed wall extends from the side wall away from the magnetic circuit.

6. A sounder device according to claim 3, wherein said fixed wall extends from said side wall in a direction towards the magnetic circuit.

7. The sounder device according to claim 3, further comprising a sealing ring that is sleeved on the support wall and clamped between the fixed wall and the frame body.

8. The sound production device as claimed in claim 7, wherein the sealing ring is glued to a side of the frame body remote from the diaphragm, and the fixing wall is glued to a side of the sealing ring remote from the frame body.