CN112073847A

CN112073847A - Sound production device

Info

Publication number: CN112073847A
Application number: CN202010879446.1A
Authority: CN
Inventors: 吴军; 印兆宇; 魏威; 刘忠原
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: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-11
Also published as: WO2022041431A1

Abstract

The invention provides a sounding device, which comprises a shell with an accommodating space and a sounding monomer accommodated in the accommodating space, wherein the sounding monomer comprises a vibrating diaphragm for vibrating and sounding, the shell is made of a metal material, and the shell comprises a base and a rear shell which are respectively covered on two opposite sides of the sounding monomer along the vibration direction of the vibrating diaphragm; the base comprises an annular base plate, a base extension wall and an annular flange edge, the annular base plate is located on one side, far away from the rear shell, of the sound generating monomer, the base extension wall is bent and extended from the inner periphery of the base plate to the direction far away from the rear shell, the annular flange edge is bent and extended from one end, far away from the base plate, of the base extension wall to the direction close to the sound generating monomer, and one side, provided with the vibrating diaphragm, of the sound generating monomer is abutted and fixed to the flange edge and enables the vibrating diaphragm to be communicated with the outside; the rear shell, the base and the sounding monomer form a rear sound cavity together in an enclosing mode. Compared with the related art, the sound production device has better acoustic effect.

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 also called a loudspeaker, and is widely applied to portable mobile electronic products, such as mobile phones, so that an audio signal is converted into sound to be played, and the sound generating device has high loudness and vibration amplitude.

The sound production device of the related art comprises a sound production unit for producing sound, a base and a rear shell, wherein the base and the rear shell are respectively covered on two opposite sides of the sound production unit, the base and the rear shell jointly enclose an accommodating space, and the base and the rear shell are subjected to injection molding and are fixed through ultrasonic welding.

However, if the base and the rear shell of the sound device in the related art need to be fixed by ultrasonic welding, more space is needed, and the size of the space in the internal cavity of the sound 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 invention aims to provide a sounding device with better acoustic effect.

In order to achieve the above object, the present invention provides a sound generating device, which includes a housing having an accommodating space and a sound generating unit accommodated in the accommodating space, wherein the sound generating unit includes a vibrating diaphragm for vibrating sound, the housing is made of a metal material, and includes a base and a rear housing respectively covering the two opposite sides of the sound generating unit along the vibration direction of the vibrating diaphragm;

the base comprises an annular base plate, a base extension wall and an annular flange edge, the annular base plate is located on one side, far away from the rear shell, of the sound generating monomer, the base extension wall is bent and extended from the inner periphery of the base plate to the direction far away from the rear shell, the annular flange edge is bent and extended from one end, far away from the base plate, of the base extension wall to the direction close to the sound generating monomer, and one side, provided with the vibrating diaphragm, of the sound generating monomer is abutted and fixed to the flange edge and enables the vibrating diaphragm to be communicated with the outside;

the rear shell, the base and the sounding monomer form a rear sound cavity together in an enclosing mode.

Preferably, the backshell is including being located the sound production monomer is kept away from base one side and with sound production monomer spaced backshell board, by the periphery of backshell board to the backshell that the base direction was buckled and is extended extends the wall, the backshell extend the wall butt in the bed plate and with bed plate welded fastening.

Preferably, the sound production device is still including being located the ventilative separator of back sound intracavity, ventilative separator is fixed in the bed plate, ventilative separator will back sound chamber is separated to become to be located ventilative separator is close to the interior sound chamber of sound production monomer one side and with the sound-absorbing chamber that sound production monomer interval set up.

Preferably, the breathable isolating piece comprises an isolating piece body arranged opposite to the rear shell plate at intervals, an isolating piece extending part bent and extending from the periphery of the isolating piece body to the base, and an isolating piece fixing part bent and extending from one end, far away from the isolating piece body, of the isolating piece extending part; the isolating part extending part and the rear shell extending wall are arranged at intervals, the isolating part fixing part is fixed on the base plate, and the ventilating isolating part, the rear shell and the base plate jointly enclose the sound absorbing cavity for accommodating sound absorbing materials.

Preferably, the sounding device further comprises a conductive member penetrating through the housing and connecting the sounding unit with an external electrical signal.

Preferably, the conductive piece comprises a conductive piece main body which is supported and fixed on the base plate, a conductive piece extension wall which extends from two ends of the conductive piece main body to the rear shell direction along the peripheral side of the sounding monomer, a connecting wall which is bent and extended from the conductive piece extension wall and is fixedly and electrically connected with the sounding monomer, and a power connection wall which extends from the conductive piece main body to the direction far away from the sounding monomer and penetrates through the shell; the isolating part fixing part is simultaneously pressed and fixed on the conductive part body and the base plate.

Preferably, the sounding device further comprises a sealing ring attached to one side of the flange edge, which is far away from the sounding monomer.

Preferably, the sealing ring is made of double-sided adhesive tape.

Compared with the prior art, the sounding device comprises a shell with an accommodating space and a sounding monomer accommodated in the accommodating space, wherein the shell is designed into a base and a rear shell which are respectively arranged on two opposite sides of the sounding monomer in a covering manner, meanwhile, the flange edge and the sounding monomer are fixed, the rear shell, the base and the sounding monomer enclose a rear sound cavity together, and the shell is made of a metal material; under the condition of not increasing the overall dimension, the space of the rear sound cavity is increased, so that the acoustic effect of the sound production device is better; in addition, the fixing with the sounding single body is realized only by utilizing the base and the rear shell, and the rear sound cavity is formed, so that the number of parts is minimized, and the cost is saved; and finally, the vibrating diaphragm is exposed on the flange edge, so that the sound producing effect of the vibrating diaphragm is better.

[ 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 in fig. 1.

[ 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. 1-3, the present invention provides a sound generating device 100, which includes a housing 1 having an accommodating space 10, a sound generating unit 2 accommodated in the accommodating space 10, a gas-permeable isolating member 4, a conductive member 5 and a sealing ring 6.

The sounding monomer 2 comprises a metal basin frame 22 and a vibrating diaphragm 21 which is fixed on the metal basin frame 22 and used for vibrating and sounding.

Specifically, casing 1 includes base 11 and backshell 12, and base 11 and backshell 12 are followed vibration direction of vibrating diaphragm 21 covers respectively and locates the relative both sides of sound production monomer 2, and this embodiment base 11 and backshell 12 are followed vibration direction of vibrating diaphragm 21 is the lid and locates the relative both sides of metal basin frame 22, base 11 and backshell 12 are made by metal material for whole casing 1 attenuation further increases accommodating space 10's size.

Base 11 is including being located sound production monomer 2 keeps away from be annular bed plate 111, by of the interior periphery of bed plate 111 is to keeping away from the base that the extension was buckled to backshell 12 direction extends wall 112 and by the base extends wall 112 and keeps away from the one end of bed plate 111 is to being close to the extension is buckled to sound production monomer direction is annular flange 113, sound production monomer 2 is equipped with one side butt of vibrating diaphragm 21 is fixed in flange 114 makes vibrating diaphragm 21 and external intercommunication for the play sound effect of vibrating diaphragm 21 is better.

The rear shell 12 includes a rear shell plate 121 located on one side of the sound generating unit 2 away from the base 11 and spaced from the sound generating unit 2, and a rear shell extension wall 122 extending from the periphery of the rear shell plate 121 to the base 11 in a bending manner. Specifically, the extending direction of the rear shell extending wall 122 is parallel to the vibration direction of the diaphragm 21, and the rear shell extending wall 122 abuts against the outer periphery of the base plate 111 and is welded and fixed with the outer periphery of the base plate 111, so that the reliability is better.

In this embodiment, the rear shell 12, the base 11 and the sound generating unit 2 together enclose a rear sound cavity 20. Thus, the sound-generating device 100 of the present invention forms a relatively closed rear sound cavity structure, which is simple in structure and improves the acoustic performance, especially the low frequency acoustic performance, of the sound-generating device 100. In this embodiment, a leakage portion 23 is further disposed on one side of the sounding unit 2 away from the diaphragm 21, and the leakage portion 23 is communicated with the rear acoustic cavity 20.

Ventilative barrier member 4 is located in back sound chamber 20, it is fixed in base plate 111, ventilative barrier member 4 will back sound chamber 20 is separated into and is located ventilative barrier member 4 is close to the interior sound chamber 30a of sound production monomer 2 one side and with the sound-absorbing chamber 30 that sound production monomer 2 interval set up.

Specifically, the ventilation spacer 4 includes a spacer body 41 disposed opposite to the rear casing panel 121 at a distance, a spacer extension portion 42 extending from the periphery of the spacer body 41 to the base 11 in a bending manner, and a spacer fixing portion 43 extending from one end of the spacer extension portion 42 away from the spacer body 41 in a bending manner; spacer extension 42 with backshell extension wall 122 interval sets up, spacer fixed part 43 is fixed in bed plate 111, ventilative spacer 4 backshell 12 and bed plate 111 enclose into the sound-absorbing cavity 30 who accepts sound-absorbing material jointly, irritate powder and can 30 be used for the encapsulation to inhale the sound granule, improve the acoustic effect of vocal ware 100.

The sealing ring 6 is attached to one side of the base plate 111, which is far away from the sounding monomer 2, and the sounding device 100 is assembled and sealed with the whole machine through the sealing ring 6; certainly, as shown in fig. 3, the sealing ring 6 may also be attached to a side of the flange edge 114 away from the sounding unit 2, and the sounding device 100 is assembled and sealed with the whole machine through the sealing ring 6; preferably, the sealing ring 6 is made of double-sided adhesive tape.

The casing 1 includes a gap 13a penetrating therethrough, and the sound generating device 100 further includes a conductive member 5 extending toward the sound generating unit 2 through the gap 13a and connecting the sound generating unit 2 with an external electric signal.

Specifically, the conductive device 5 includes a conductive device main body 51 supported and fixed on the base plate 111, a conductive device extension wall 52 extending from both ends of the conductive device main body 51 toward the rear housing 12 along the peripheral side of the sound generating unit 2, a connection wall 53 bent and extended from the conductive device extension wall 52 and fixedly connected to the sound generating unit 2, and a power connection wall 54 extending from the conductive device main body 51 toward the direction away from the sound generating unit 2 and penetrating through the gap 13 a; the spacer fixing portion 43 is press-fixed to the conductive member body 51 and the base plate 111. Through the structural design of the conductive piece 5, the whole conductive piece 5 occupies a small space of the sounding device 100, and meanwhile, the electric connection with the sounding unit 2 is realized, so that the space utilization rate is higher.

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 shell with an accommodating space and a sounding monomer accommodated in the accommodating space, wherein the sounding monomer comprises a vibrating diaphragm for vibrating and sounding;

2. The sounding device according to claim 1, wherein the rear housing comprises a rear housing plate spaced apart from the sounding unit and located on a side of the sounding unit away from the base, and a rear housing extension wall extending from a periphery of the rear housing plate in a bending manner in a direction of the base, wherein the rear housing extension wall abuts against the base plate and is welded to the base plate.

3. The sound-producing device according to claim 1, further comprising a breathable partition member located in the rear sound cavity, wherein the breathable partition member is fixed to the base plate, and the breathable partition member divides the rear sound cavity into an inner sound cavity located on one side of the breathable partition member close to the sound-producing unit and a sound-absorbing cavity spaced from the sound-producing unit.

4. The sounder device according to claim 3, wherein the vent spacer comprises a spacer body disposed in spaced relation to the rear housing plate, a spacer extension extending from a periphery of the spacer body toward the base, and a spacer fixing portion extending from an end of the spacer extension remote from the spacer body; the isolating part extending part and the rear shell extending wall are arranged at intervals, the isolating part fixing part is fixed on the base plate, and the ventilating isolating part, the rear shell and the base plate jointly enclose the sound absorbing cavity for accommodating sound absorbing materials.

5. The sounder device according to claim 4, further comprising a conductive member extending through the housing and connecting the sounding body to an external electrical signal.

6. The sounding device according to claim 5, wherein the conductive member comprises a main body supported and fixed on the base plate, a conductive member extension wall extending from two ends of the main body to the rear housing along the periphery of the sounding unit, a connecting wall extending from the conductive member extension wall and fixedly connected to the sounding unit, and a connecting wall extending from the main body to a direction away from the sounding unit and penetrating through the housing; the isolating part fixing part is simultaneously pressed and fixed on the conductive part body and the base plate.

7. The sound device as claimed in claim 1, further comprising a sealing ring attached to a side of the flange away from the sound generating unit.

8. The sound production device of claim 7, wherein the sealing ring is made of double-sided tape.