CN112218215A

CN112218215A - Sound production device

Info

Publication number: CN112218215A
Application number: CN202010917739.4A
Authority: CN
Inventors: 梁平; 赵彬
Original assignee: AAC Optoelectronic Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Current assignee: AAC Optoelectronic Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-01-12
Also published as: WO2022047934A1

Abstract

The invention provides a sounding device which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system comprises a vibration diaphragm, a voice coil, a centering support sheet, a framework and an elastic wave which is opposite to the vibration diaphragm at intervals, the elastic wave comprises an elastic wave body and a lead fixed on the elastic wave body, the cross section of the elastic wave body is wavy, one end of the elastic wave body is fixed on the centering support sheet, the other end of the elastic wave body is fixed on the basin frame, the lead comprises a lead body fixed on the elastic wave body, an inner lead extending towards the inner side direction of the elastic wave body from the lead body along the vibration direction vertical to the elastic wave and an outer lead extending towards the outer side direction of the elastic wave body from the lead body vertical to the vibration direction of the elastic wave, the lead body is attached to and fixed on the elastic wave body and is integrally formed, the inner lead is electrically connected with the voice coil, and the outer lead penetrates through the. Compared with the prior art, the sounding device has good sounding process consistency and high 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 mobile electronic product.

[ background of the invention ]

The sound generating device is widely applied to portable mobile electronic products, such as mobile phones, so that the audio signals are converted into sound to be played, the sound generating device is high in loudness, and the low-frequency sound effect is good. Wherein, the bullet ripples is the important part of sound production device, and the vibration system that plays when ripples can effectively reduce the sound production device sound production sways to improve the reliability of sound production device.

The sound production device in the related art comprises an elastic wave, wherein the elastic wave comprises an elastic wave body and a wire, the elastic wave body is a wavy wafer, and the wire is electrically connected with a voice coil of the sound production device through the elastic wave body and transmits an external electric signal to the voice coil.

However, the damper body of the related art is provided with a plurality of fixing holes penetrating through the damper body and arranged in a row, and the lead sequentially penetrates through the plurality of fixing holes and is fixed to the damper body by gluing, but the structure has low production efficiency and poor process consistency, affects the performance of the sound generating device, and causes low reliability.

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

[ summary of the invention ]

The invention aims to provide a sound production device with good consistency of an elastic wave process and high reliability.

In order to achieve the above object, the present invention provides a sound generating device, which includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound, wherein the vibration system includes a vibrating diaphragm fixed to the frame, a voice coil for driving the vibrating diaphragm to vibrate, a centering pad fixed to the voice coil, a framework connecting the vibrating diaphragm and the centering pad, and an elastic wave spaced from and opposing to the vibrating diaphragm, the elastic wave includes an elastic wave body and a lead fixed to the elastic wave body, the cross section of the elastic wave body is wavy, one end of the elastic wave body is fixed to the centering pad, the other end of the elastic wave body is fixed to the frame, the lead includes a lead body fixed to the elastic wave body, an inner lead extending from the lead body in a direction perpendicular to the vibration direction of the elastic wave to the inner side of the elastic wave body, and a vibration perpendicular to the elastic wave from the lead body Move the direction to play outer conductor that ripples body outside direction extends, the laminating of wire body is fixed in play ripples body and integrated into one piece, interior wire with the voice coil loudspeaker voice coil electricity is connected, outer conductor passes basin frame and at least part expose in the basin frame.

Preferably, the damper body is made of a silicon rubber material.

Preferably, the wire body is embedded in the damper body.

Preferably, the wire body and the damper body are integrally formed through gluing.

Preferably, the wire body and the elastic wave body are integrally formed in a die pressing mode.

Preferably, the wire is a braided wire.

Preferably, the wire is flat.

Preferably, the bullet ripples body is the ring form, the wire includes two and interval relative setting, two the wire is followed the radial extension of bullet ripples body.

Compared with the prior art, the sounding device is attached and fixed to the elastic wave body through the elastic wave lead body and is integrally formed. The gluing and fixing mode of the integrated forming enables the gluing of the wire and the elastic wave body to reduce manual operation, the process consistency is good, and the gluing strength of the process is high, so that the acoustic performance of the sound production device is good and the reliability is high.

[ 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 an exploded perspective view of a sound device according to the present invention;

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

FIG. 4 is a schematic perspective view of the damper of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is an enlarged view taken along section C of FIG. 5;

fig. 7 is a schematic view of another embodiment of fig. 6.

[ 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. 1-6, the present invention also provides a sound producing device 200. The sound production device 200 employs the damper 100.

Specifically, the sounding device 200 comprises a frame 1, a vibration system 2 fixed on the frame 1, and a magnetic circuit system 3 for driving the vibration system 2 to vibrate and sound.

The frame 1 comprises a bottom plate 11 and a frame side wall 12 bent and extended from the peripheral side of the bottom plate 11.

The vibration system 2 comprises a vibrating diaphragm 21 fixed on the basin frame 11, a voice coil 22 for driving the vibrating diaphragm 21 to vibrate, a centering support piece 23 fixed on the voice coil 22, a framework 24 respectively connected with the vibrating diaphragm 21 and the centering support piece 23, and an elastic wave 100.

The vibrating diaphragm 21 is fixed on the frame side wall 12.

The elastic wave 100 is opposite to the diaphragm 21 at a spacing. Specifically, the damper 100 includes a damper body 4 and a lead 5 fixed to the damper body 4.

The damper body 4 is specifically elastic and is used for buffering vibration. The cross section of the elastic wave body 4 is wavy.

One end of the elastic wave body 4 is fixed on the centering support piece 23, and the other end of the elastic wave body 4 is fixed on the basin frame 1. Specifically, the other end of the elastic wave body 4 is fixed on the side wall 12 of the basin stand.

The lead 5 includes a lead body 51 fixed to the damper body 4, an inner lead 52 extending from the lead body 51 toward the inside of the damper body 4 in a direction perpendicular to the vibration direction of the damper 100, and an outer lead 53 extending from the lead body 51 toward the outside of the damper body 4 in a direction perpendicular to the vibration direction of the damper 100. In the present embodiment, the lead wire 5 is a braided wire.

The lead body 51 is attached and fixed to the damper body 4. In the present embodiment, the lead body 51 is bonded and fixed to the surface of the damper body 4. In order to achieve higher reliability of the bonding, the lead 5 is flat. Of course, without limitation, as shown in fig. 7, in another embodiment, the lead body 51a is embedded in the elastic wave body 4a, and the reliability of the fixing structure is higher.

The inner lead 52 is electrically connected to the voice coil 22. The outer lead 53 passes through the frame 1 and is at least partially exposed out of the frame 1. In particular, the external lead 53 is exposed out of the side wall 12 of the frame. The structure ensures that the elastic wave 100 does not influence the total height of the whole sounding device 200, and the ultrathin design of the sounding device can be realized.

The damper body 4 and the lead body 51 are integrally formed. In this embodiment, the lead body 51 and the damper body 4 are integrally formed by gluing. Specifically, the lead body 51 and the damper body 4 are integrally formed by a die pressing method. The gluing and fixing mode of the integral forming enables the wire 5 and the elastic wave body 4 to be glued and manual operation is reduced, the process consistency is good, the gluing strength of the process is high, and therefore the acoustic performance of the sound production device applying the elastic wave 100 is good and the reliability is high.

In order to better and reliably combine the damper body 4 with the lead body 51, the damper body 4 is made of a silicon rubber material. Therefore, the damper body 4 and the lead body 51 are integrated through silicon rubber integral forming, the structure is high in reliability, the process is simple, and personnel are saved.

In the present embodiment, the damper body 4 has an annular shape. The conducting wires 5 comprise two conducting wires and are oppositely arranged at intervals. The two wires 5 extend along the radial direction of the damper body 4. This structure makes the performance of bullet ripples 100 vibration is stable, when avoiding vibrating bullet ripples body 4 respectively with two conductor body 51 vibration nonconformity leads to the performance variation, has also avoided bullet ripples body 4 with conductor body 51 arouses the separation because of the vibration atress inequality, thereby makes bullet ripples 100 reliability is high.

The magnetic circuit system 3 comprises a magnetic yoke 31 fixed on the basin stand 1, a magnetic steel 32 fixed on the magnetic yoke 31, and a magnetic bowl 33 covered on the magnetic steel 32 and fixed on the magnetic yoke 31. The yoke 31 is fixed to the bottom plate 11.

The magnetic bowl 33 includes a magnetic bowl body 331 abutting against the magnetic steel 32 on the side away from the magnetic yoke 31, and a magnetic bowl sidewall 332 bent and extended from the peripheral side of the magnetic bowl body 331 and fixed to the magnetic yoke 31.

The magnetic bowl side wall 332 and the magnetic steel 32 are spaced to form a magnetic gap 30. The voice coil 22 is wound around the magnetic steel 32 and inserted into the magnetic gap 30.

In this embodiment, the magnetic bowl side wall 332 is provided with a notch 3320 penetrating therethrough.

The framework 24 is arranged between the magnetic bowl side wall 332 and the frame side wall 12, one end of the centering support sheet 23 is fixed at one end of the framework 24 far away from the vibrating diaphragm 21, and the other end of the centering support sheet 23 penetrates through the notch 3320 and extends to the magnetic gap 30 to be abutted and fixed on the voice coil 22. The structure does not affect the total height of the whole sounding device 100, and can realize the ultra-thin design of the sounding device 100.

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. The utility model provides a sounder, it includes the basin frame and is fixed in respectively the vibration system and the drive of basin frame the magnetic circuit of vibration system vibration sound production, vibration system is including being fixed in the vibrating diaphragm of basin frame, drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration, be fixed in the centering disk, the connection of voice coil loudspeaker voice coil the vibrating diaphragm with the skeleton of centering disk and with the relative bullet ripples of vibrating diaphragm interval, bullet ripples is including playing the ripples body and being fixed in the wire of bullet ripples body, the transversal wavy of personally submitting of bullet ripples body, the one end of bullet ripples body is fixed in the centering disk, the other end of bullet ripples body is fixed in the basin frame, a serial communication port, the wire is including being fixed in the wire body of bullet ripples body, by the wire body is along the perpendicular to the vibration direction of bullet ripples to the interior wire that the inboard direction of bullet ripples body extends and by the wire body perpendicular to the vibration direction of bullet ripples to bullet ripples The outer conductor that ripples body outside direction extends, the laminating of wire body is fixed in play ripples body and integrated into one piece, interior wire with the voice coil loudspeaker voice coil electricity is connected, the outer conductor passes basin frame and at least part expose in the basin frame.

2. The sounder device according to claim 1, wherein the popple body is made of a silicone rubber material.

3. The sounder device according to claim 2, wherein the lead body is embedded within the damper body.

4. The sounder device according to claim 1, wherein the lead body and the damper body are integrally formed by gluing.

5. The sounder device according to claim 4, wherein the lead body and the popple body are integrally formed by molding.

6. The sounder device according to claim 1, wherein the wire is a braided wire.

7. The sounder device according to claim 6, wherein the wire is flat.

8. The sounder device according to claim 1, wherein the damper body is annular, the leads include two spaced apart conductors that are opposed to each other, and the two conductors extend in a radial direction of the damper body.