CN112104933A

CN112104933A - Sound production device

Info

Publication number: CN112104933A
Application number: CN202010879442.3A
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 Photoelectric Technologies Changzhou Co Ltd; 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: 2020-12-18
Also published as: WO2022041458A1

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 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 and the rear shell are welded and fixed, the base is provided with a sounding port penetrating through the base, and one side of the sounding monomer, which is provided with the vibrating diaphragm, faces the sounding port; the sounding device also comprises an annular bracket which is accommodated in the accommodating space and is wound around and fixed on the periphery of the sounding monomer, and the bracket is made of a plastic material and is abutted and fixed on one side of the base, which is close to the rear shell; the rear shell, the base, the support and the sounding monomer enclose a rear sound cavity together. Compared with the related art, the sounding device has good 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 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 monomer 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 monomer, and the base and the rear shell are subjected to injection molding and are fixed through ultrasonic welding.

However, the base and the rear shell of the sound device of the related art need to be fixed by ultrasonic welding, which requires more space, and limits the size of the internal cavity of the sound device.

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 high space utilization rate and better reliability.

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 two opposite sides of the sound-generating unit along a vibration direction of the vibrating diaphragm, the base and the rear housing are welded and fixed, the base is provided with a sound-generating opening penetrating through the base, and one side of the sound-generating unit provided with the vibrating diaphragm faces the sound-generating opening; the sounding device also comprises an annular bracket which is accommodated in the accommodating space and is wound around and fixed on the periphery of the sounding monomer, and the bracket is made of a plastic material and is abutted and fixed on one side of the base, which is close to the rear shell; the rear shell, the base, the support and the sounding monomer enclose a rear sound cavity together.

Preferably, the base comprises a base plate located on one side of the sound generating unit far away from the rear shell, and a base extension wall bent and extended from the outer periphery of the base plate to the direction of the rear shell, and one end of the base plate far away from the base extension wall is welded and fixed with the peripheral side of the sound generating unit; the sound producing port penetrates through the base plate; 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 extension wall that the base direction was buckled and is extended, backshell extension wall butt in base extension wall and with base extension wall welded fastening.

Preferably, the base further comprises a flange formed by bending and extending the inner periphery of the base plate away from the support in the direction, and the flange and the single body are arranged at intervals.

Preferably, the sound production device further comprises a breathable isolating piece located in the rear sound cavity, and the breathable isolating piece is fixed on the support and separates the sound production unit from the rear sound cavity.

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 bracket, 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 partition extending part and the rear shell extending wall are arranged at intervals, the partition fixing part is fixed on the support, and the breathable partition, the rear shell, the base and the support jointly enclose a powder filling space.

Preferably, the sound production monomer is still including being used for fixing the metal basin frame of vibrating diaphragm, the bed plate is kept away from the base extend the wall one end with metal basin frame local welded fastening, the support is around establishing and being fixed in metal basin frame.

Preferably, the support comprises a first surface and a second surface which are parallel to the vibration direction of the vibrating diaphragm and are oppositely arranged, the first surface is fixedly connected with the metal basin frame, and the second surface is arranged at intervals with the base extension wall.

Preferably, the bracket further includes a third surface connecting the first surface and the second surface, a fourth surface connected to the second surface and spaced apart from the third surface, and a fifth surface extending from the first surface to the fourth surface in an inclined manner; the breathable isolating piece is fixed on the third surface, and the base plate is fixed on the fourth surface.

Preferably, the sounding device further comprises a conductive piece for connecting the sounding monomer with an external electric signal, wherein the conductive piece comprises a conductive piece body which is supported and fixed at one end of the bracket close to the rear shell, a connecting arm which extends from two ends of the conductive piece body to the sounding monomer and is fixedly and electrically connected with the sounding monomer, and an extending arm which extends from the conductive piece body to a direction far away from the sounding monomer and penetrates through the shell; one side of the bracket, which is close to the rear shell, is sunken to form an accommodating groove, the conductive piece body is arranged in the accommodating groove and enables the conductive piece body and one side of the bracket, which is close to the rear shell, to be flush, and the isolating piece fixing part is simultaneously pressed and fixed on the conductive piece body and the bracket.

Preferably, the sounding device further comprises a rubber ring attached to one side of the base plate, which is far away from the sounding monomer, and the rubber ring surrounds the sounding opening.

Preferably, the rubber ring is a double-sided adhesive tape.

Compared with the prior art, the sound production device comprises a shell with an accommodating space and a sound production 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 sound production monomer in a covering manner, a support is additionally arranged for fixing the sound production monomer, the support and the base are fixed, the rear shell, the base, the support and the sound production monomer form a rear sound cavity in a surrounding manner, the support is made of a plastic material, 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 rear shell and the base are welded and fixed, and the reliability 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 of FIG. 1;

fig. 4 is an enlarged view of a portion B shown in fig. 3.

[ 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. 1-4, 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 support 3, a ventilation spacer 4, a conductive member 5, and a rubber 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 welded fastening just follow vibration direction of vibrating diaphragm 21 covers respectively and locates the relative both sides of sound production monomer 2, 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.

The base 11 comprises a base plate 111 fixed on one side of the sound generating single body 2 far away from the rear shell 12, a base extending wall 112 bent and extended from the outer periphery of the base plate 111 to the direction of the rear shell 12, and a flange 113 bent and extended from the inner periphery of the base plate 111 to the direction far away from the support 3, wherein the flange 113 and the single body 2 are arranged at intervals; the base plate 111 is kept away from the base extend wall 112 one end with the week side local weld of metal basin frame 22 is fixed, and the reliability is better, the base plate 111 is including running through the phonation mouth 1110 above that, phonation mouth 1110 with vibrating diaphragm 21 intercommunication, phonation monomer 2 is equipped with one side orientation of vibrating diaphragm 21 phonation mouth 1110 is with the sound.

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-housing extending wall 122 is parallel to the vibration direction of the diaphragm 21, the extending direction of the base extending wall 112 is parallel to the vibration direction of the diaphragm 21, and the rear-housing extending wall 122 abuts against the base extending wall 112 and is fixed to the base extending wall 112 by welding, so that the reliability is better.

Support 3 is cyclic annular and beats gluey fixedly with sound production monomer 2, support 3 accept in accommodating space just is fixed in around establishing the week side of metal basin frame 22, support 3 butt is fixed in the bed plate 111 is close to one side of backshell 12 and with backshell extension wall 112 interval sets up.

Specifically, the bracket 3 is made of a plastic material, the bracket 3 includes a first surface 31 and a second surface 32 that are parallel to the vibration direction of the diaphragm 21 and are oppositely disposed, the first surface 31 is fixedly connected to the metal frame 22, and the second surface 32 is spaced from the base extension wall 112; the bracket 3 further includes a third surface 33 connecting the first surface 31 and the second surface 32, a fourth surface 34 connected to the second surface 32 and spaced apart from the third surface 33, and a fifth surface 35 extending from the first surface 31 to the fourth surface 34; the air-permeable partition 4 is fixed to the third surface 33, and the base plate 111 is fixed to the fourth surface 35. Through the setting to support 3 promptly for support 3 corresponds the fifth face 35 of vibrating diaphragm 21 and is the slope setting, is favorable to the sound production of sound production monomer 2, and the effect of making a sound is better.

In this embodiment, the rear housing plate 121, the rear housing extension wall 122, the base extension wall 112, the base plate 111, the bracket 3, 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.

The air-permeable partition 4 is positioned in the rear sound cavity 20, is fixed on the support 3 and separates the sound-generating unit 1 from the rear sound cavity 20.

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 bracket 3 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; the partition extending part 42 and the rear casing extending wall 122 are arranged at intervals, the partition fixing part 43 is fixed on the bracket, and the air-permeable partition 4, the rear casing 12, the base 11 and the bracket 3 together enclose a powder filling space 30.

Rubber ring 6 pastes and locates base plate 111 keeps away from sound production monomer 2 one side, rubber ring 6 encircles sound production mouth 1110 sets up. The sounding device 100 is assembled and sealed with the whole machine through the rubber ring 6, and specifically, the rubber ring 6 is a double-sided adhesive tape.

The casing 1 includes a gap 13 penetrating through the casing, the sound generating device 100 further includes a conductive piece 5 for connecting the sound generating unit 2 with an external electrical signal, the conductive piece 5 includes a conductive piece body 51 supported and fixed at one end of the bracket 3 close to the rear casing 12, a connecting arm 52 extending from two ends of the conductive piece body 51 to the direction of the sound generating unit 2 and fixedly electrically connected with the sound generating unit 2, and an extending arm 53 extending from the conductive piece body 51 to the direction far away from the sound generating unit 2 and passing through the gap 13; the side of the bracket 3 close to the rear shell 12 is recessed to form a receiving groove 3a, the conductive member body 51 is disposed in the receiving groove 3a and makes the conductive member body 51 and the side of the bracket 3 close to the rear shell 12 flush with each other, and the spacer fixing portion 43 is pressed and fixed to the conductive member body 51 and the bracket 3 at the same time.

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, and is characterized in that the shell is made of a metal material and 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 and the rear shell are welded and fixed, the base is provided with a sounding port penetrating through the base, and one side of the sounding monomer, which is provided with the vibrating diaphragm, faces the sounding port; the sounding device also comprises an annular bracket which is accommodated in the accommodating space and is wound around and fixed on the periphery of the sounding monomer, and the bracket is made of a plastic material and is abutted and fixed on one side of the base, which is close to the rear shell; the rear shell, the base, the support and the sounding monomer enclose a rear sound cavity together.

2. The sounding device according to claim 1, wherein the base includes a base plate located on a side of the sounding unit away from the rear housing, and a base extension wall extending from an outer periphery of the base plate in a bending manner in a direction of the rear housing, and an end of the base plate away from the base extension wall is welded and fixed to a peripheral side of the sounding unit; the sound producing port penetrates through the base plate; 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 extension wall that the base direction was buckled and is extended, backshell extension wall butt in base extension wall and with base extension wall welded fastening.

3. The sounder device according to claim 2, wherein the base further comprises a flange formed by bending and extending the inner periphery of the base plate in a direction away from the bracket, and the flange is spaced apart from the single body.

4. The sounder device according to claim 2, further comprising a gas permeable spacer positioned within the rear sound cavity, the gas permeable spacer being secured to the support and separating the sound emitting cells from the rear sound cavity.

5. The sounder device according to claim 4, wherein the vent spacer comprises a spacer body disposed in spaced relation opposite the rear housing plate, a spacer extension extending from a periphery of the spacer body toward the support, and a spacer fixing portion extending from an end of the spacer extension remote from the spacer body; the partition extending part and the rear shell extending wall are arranged at intervals, the partition fixing part is fixed on the support, and the breathable partition, the rear shell, the base and the support jointly enclose a powder filling space.

6. The sounding device according to claim 4, wherein the sounding unit further comprises a metal frame for fixing the diaphragm, one end of the base plate, which is away from the base extension wall, is welded to a local portion of the metal frame, and the support is fixed to the metal frame in a winding manner.

7. The sounding device according to claim 6, wherein the support comprises a first surface and a second surface parallel to the vibration direction of the diaphragm and oppositely arranged, the first surface is fixedly connected with the metal frame, and the second surface is spaced from the base extension wall.

8. The sounder device according to claim 7, wherein the bracket further comprises a third face connecting the first face and the second face, a fourth face connected to the second face and spaced from the third face, and a fifth face extending obliquely from the first face to the fourth face; the breathable isolating piece is fixed on the third surface, and the base plate is fixed on the fourth surface.

9. The sounding device according to claim 5, further comprising a conductive member for connecting the sounding unit with an external electrical signal, wherein the conductive member comprises a conductive member body supported and fixed at one end of the support close to the rear housing, a connecting arm extending from two ends of the conductive member body to the sounding unit and electrically connected to the sounding unit, and an extending arm extending from the conductive member body to a direction away from the sounding unit and penetrating through the housing; one side of the bracket, which is close to the rear shell, is sunken to form an accommodating groove, the conductive piece body is arranged in the accommodating groove and enables the conductive piece body and one side of the bracket, which is close to the rear shell, to be flush, and the isolating piece fixing part is simultaneously pressed and fixed on the conductive piece body and the bracket.

10. The sounder device according to claim 1, further comprising a rubber ring attached to a side of the base plate remote from the sounding unit, wherein the rubber ring is disposed around the sounding port.

11. The sounder device according to claim 10, wherein the rubber ring is double-sided tape.