CN214101658U

CN214101658U - Sound production device

Info

Publication number: CN214101658U
Application number: CN202023201200.3U
Authority: CN
Inventors: 王洪兴
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-31
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a sound production device, which comprises a shell and at least one loudspeaker device, wherein the shell is provided with at least one first opening, and the loudspeaker device is communicated with the air outside an accommodating space through the first opening; each loudspeaker device is provided with a front cavity communicated with the air outside the accommodating space and a rear cavity communicated with the air inside the accommodating space, and the front cavity is communicated with the air outside the accommodating space through a first opening in sequence; the sound generating device further comprises a second opening penetrating through the shell, the rear cavity is communicated with the air of the second opening through the accommodating space, and the sound generating device further comprises a vibrating piece and a connecting piece, wherein the vibrating piece is suspended at the second opening and is arranged at an interval with the shell, and the connecting piece is connected with the vibrating piece and the shell. The utility model discloses can solve the relatively poor problem of the mobile terminal outer low sound performance that puts among the correlation technique.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of the acoustoelectric conversion, especially, relate to a sound generating mechanism.

[ background of the invention ]

Nowadays, mobile terminals such as mobile phones and the like almost become the most important platforms for mass consumers to enjoy multimedia contents. Mobile terminals are becoming more powerful, wherein the quality of sound reproduction is also becoming better. In the related art, even on the basis of the original single loudspeaker, double loudspeakers can be upgraded and equipped, so that stereo sound can be realized in a play-out mode. However, whether it is a single speaker or a dual speaker, the sound performance is still different from that of the portable bluetooth speaker, wherein one of the most important differences is the difference in bass performance, and the natural size of the micro-speaker in the mobile terminal is limited, so that the equivalent f0 (lowest resonance frequency) is difficult to be detected down to the range of, for example, 300Hz or 200Hz or lower, and the sound emission performance of the mobile terminal is poor.

[ Utility model ] content

An object of the utility model is to provide a sound generating mechanism aims at solving the relatively poor problem of the mobile terminal of the correlation technique outer low sound performance of putting.

The technical scheme of the utility model as follows: a sound generating device comprises a shell with an accommodating space and at least one loudspeaker device accommodated in the accommodating space, wherein the shell is provided with at least one first opening, and the loudspeaker device is communicated with the air outside the accommodating space through the first opening; each loudspeaker device is provided with a front cavity communicated with the air outside the accommodating space and a rear cavity communicated with the air inside the accommodating space, and the front cavity is communicated with the air outside the accommodating space through the first opening; the sound generating device further comprises a second opening penetrating through the shell, the rear cavity is communicated with the air in the containing space, the second opening is arranged at the position, inside the containing space, of the rear cavity, the sound generating device further comprises a vibrating piece and a connecting piece, the vibrating piece is arranged at the position, at the interval, of the shell, of the vibrating piece, and the connecting piece is connected with the shell.

Furthermore, the connecting piece include with the vibrating piece periphery is fixed and encircles vibrating piece peripheral first connecting portion, encircle and be in first connecting portion are kept away from vibrating piece one side periphery and with the book ring portion that first connecting portion are connected and encircle and be in book ring portion is kept away from first connecting portion one side periphery and with the second connecting portion that book ring portion is connected, the second connecting portion are fixed on the shell.

Further, the folded ring part protrudes towards the inside of the accommodating space or the outside of the accommodating space.

Further, the shell comprises a front cover, a rear cover and a frame, wherein the rear cover is arranged at an interval with the front cover, the frame is connected with the front cover and the rear cover and surrounds the front cover and the rear cover to form the accommodating space, the first opening penetrates through the front cover, and the second opening penetrates through the rear cover.

Further, each speaker device including have the accommodation space the casing and accept in sound production monomer in the accommodation space, sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm will the accommodation space separates into the ante-chamber with the back chamber, the casing is provided with at least one third opening, the ante-chamber passes through in proper order the third opening, first opening with accommodation space outside air intercommunication.

Further, the housing includes a top wall and a side wall extending from the periphery of the top wall in a bent manner, the speaker device is fixed to the housing through the top wall or the side wall, and the third opening penetrates through the top wall or the side wall.

Furthermore, the sound production monomer still includes the drive the magnetic circuit of vibrating diaphragm vibration sound production, magnetic circuit includes the yoke and is fixed in the magnetic circuit subassembly of yoke, the yoke is fixed in lateral wall and at least part with the lateral wall interval sets up and forms the passageway, the back chamber passes through in proper order the passageway, the accommodating space inside with second opening air intercommunication.

Further, the magnetic yoke is of a rectangular structure, and the magnetic yoke is recessed from the corner of the magnetic yoke to a position far away from the side wall and forms the channel in a surrounding mode with the side wall.

Further, the connecting member is made of an elastic material.

Furthermore, the frame includes two major axis walls that set up relatively and connect two minor axis walls of major axis wall, the speaker device has two, two the speaker device is fixed respectively on two the minor axis wall.

Further, the yoke has a rectangular plate shape, and the second opening is provided at a central position of the rear cover.

The beneficial effects of the utility model reside in that: the utility model discloses a sound generating mechanism is at the during operation, and the inside air in speaker device antechamber and back chamber all can take place the vibration, and because the back chamber is through accommodating space and second opening air intercommunication, consequently can promote the vibration piece vibration production sound of suspension in the second opening. Because the area of the rear cover is larger, the area of the vibrating piece can be properly increased, and therefore the bass performance of the sound production device can be improved.

[ description of the drawings ]

Fig. 1 is a schematic view of an overall structure of a sound generating device provided in an embodiment of the present invention;

fig. 2 is a schematic view of a split structure of a terminal device provided by an embodiment of the present invention;

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

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is an enlarged schematic view of portion B of FIG. 3;

fig. 6 is a schematic view of a split structure of a sound generating unit provided in the embodiment of the present invention;

fig. 7 is a schematic sectional view in the direction a-a according to another embodiment of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

Example (b):

referring to fig. 1 to 3, the sound generating device of the present invention includes a housing 100 having an accommodating space 80 and at least one speaker device 40 accommodated in the accommodating space 80, the housing 100 has at least one first opening 11, and the speaker device 40 is communicated with the outside air of the accommodating space 80 through the first opening 11.

Referring to fig. 5 and 6, each speaker device 40 has a front chamber 200 in air communication with the outside of the accommodating space 80 and a rear chamber 300 in air communication with the inside of the accommodating space 80, and the front chamber 200 is in air communication with the outside of the accommodating space 80 through the first opening 11. The sound generating apparatus further includes a second opening 50 disposed through the casing 100, the rear chamber 300 is in air communication with the second opening 50 through the inside of the receiving space 80, a vibrating member 60 suspended at the second opening 50 and spaced apart from the casing 100, and a connecting member 70 connecting the vibrating member 60 and the casing 100.

The utility model discloses a sound generating mechanism is at the during operation, and the inside air of front chamber 200 and back chamber 300 of speaker device 40 all can take place the vibration, and because back chamber 300 is through accommodating space 80 and second opening 50 air intercommunication, consequently can promote the vibration of suspension vibrating member 60 in second opening 50, produces sound. Since the area of the rear cover 20 is large, the area of the vibrating member 60 can be also increased appropriately, so that the bass performance of the sound generating apparatus can be improved.

Specifically, each speaker device 40 includes a housing 41 having an accommodating space 90 and a sound generating unit 42 accommodated in the accommodating space 90, the sound generating unit 42 includes a vibrating diaphragm 4211 for vibrating and generating sound, the vibrating diaphragm 4211 divides the accommodating space 90 into a front cavity 200 and a rear cavity 300, the housing 41 is provided with at least one third opening 4111, the front cavity 200 sequentially passes through the third opening 4111, and the first opening 11 is communicated with the outside air of the accommodating space 80, so that the sound generated by the sound generating unit 42 can be guided out.

The housing 100 includes a front cover 10, a rear cover 20 spaced apart from the front cover 10, and a frame 30 connecting the front cover 10 and the rear cover 20 and enclosing an accommodating space 80 with the front cover 10 and the rear cover 20, wherein the first opening 11 is disposed through the front cover 10, and the second opening 50 is disposed through the rear cover 20. The front cover 10 may be used as a screen of a mobile terminal using the sound generating device. The housing 41 includes a top wall 411 and a side wall 412 extending from the periphery of the top wall 411, the speaker device 40 may be fixed to the housing 100 through the top wall 411 or may be fixed to the housing 100 through the side wall 412, and the third opening 4111 is provided through the top wall 411 or the side wall 412.

The connecting member 70 of this embodiment is made of an elastic material, which may be rubber, silicon rubber, or synthetic rubber, and the embodiment is not limited thereto. The elastic connecting member 70 can reduce the restriction of the rear cover 20 to the vibrating member 60, effectively improve the sensitivity of the vibrating member 60, and further improve the bass performance of the sound generating apparatus.

In one possible embodiment, as shown in fig. 3 and 4, the connecting element 70 includes a first connecting portion 71 fixed to the periphery of the vibrating element 60 and surrounding the periphery of the vibrating element 60, a corrugated portion 72 surrounding the periphery of the first connecting portion 71 on the side away from the vibrating element 60 and connected to the first connecting portion 71, and a second connecting portion 73 surrounding the periphery of the corrugated portion 72 on the side away from the first connecting portion 71 and connected to the corrugated portion 72, the second connecting portion 73 is fixed to the casing 100, and the corrugated portion 72 may protrude toward the inside of the accommodating space 80 or protrude toward the outside of the accommodating space 80, which is not limited in this embodiment. In another possible embodiment, as shown in fig. 7, the connecting member 70 may have a circular flat plate shape, that is, the upper and lower surfaces of the connecting member 70 are flat, the connecting member 70 is disposed around the periphery of the vibrating member 60, one end of the connecting member 70 is fixed to the periphery of the vibrating member 60, and the other end of the connecting member 70 is fixed to the casing 100.

The vibrator 60 of the present embodiment has a circular plate shape, and accordingly, the connector 70 has a circular ring shape adapted to the shape of the vibrator 60. Of course, in other possible embodiments, the vibrator 60 may have a quadrangular plate shape, a pentagonal plate shape, a hexagonal plate shape, or the like, and the shape of the vibrator 60 is not limited in this embodiment.

In addition, the frame 30 includes two long axis walls 31 disposed opposite to each other and two short axis walls 32 disposed opposite to each other and connecting the two long axis walls 31, and the two speaker devices 40 are fixed to the two short axis walls 32, respectively. In other possible embodiments, the number of the speaker devices 40 may also be three, four, five or six, and the number of the speaker devices 40 may be adjusted accordingly according to actual requirements. The second opening 50 is opened at a central position of the rear cover 20, that is, the vibration member 60 is disposed at a central position of the rear cover 20. Of course, the vibrating member 60 may be disposed at other positions of the rear cover 20, for example, at a position close to the short axis wall 4122, so that the distance from the speaker unit 40 is closer and the vibrating member 60 is more effective in vibrating.

As shown in fig. 5 and 6, the sounding unit 42 further includes a magnetic circuit system 422 for driving the diaphragm 4211 to vibrate and sound, the magnetic circuit system 422 includes a yoke 4223 and a magnetic circuit assembly 4220 fixed to the yoke 4223, the yoke 4223 is fixed to the sidewall 412 and at least partially spaced from the sidewall 412 to form a passage 42231, the rear cavity 300 sequentially passes through the passage 42231, and the interior of the accommodating space 80 is in air communication with the second opening 50.

Preferably, the yoke 4223 is rectangular in configuration, the yoke 4223 being recessed away from the side wall 412 from its corners and enclosing the side wall 412 to form a channel 42231. The sounding unit 42 of this embodiment further includes a vibration system 421 and a support 423 for fixing the vibration system 421 and the magnetic circuit system 422, the support 423 includes a frame 4231 and an upper cover 4232 covering the top surface of the frame 4231, the vibration system 421 includes a vibrating diaphragm 4211, and the vibrating diaphragm 4211 is sandwiched between the frame 4231 and the upper cover 4232. The magnetic circuit assembly 4220 comprises a main magnetic steel 4221 and an auxiliary magnetic steel 4222, the main magnetic steel 4221 and the auxiliary magnetic steel 4222 are arranged above a magnetic yoke 4223, and the auxiliary magnetic steel 4222 has four and four auxiliary magnetic steels 4222 which are arranged around the four sides of the main magnetic steel 4221. The vibration system 421 further includes a voice coil 4212 and a ball top 4213, the voice coil 4212 is sleeved with a main magnetic steel 4221, and the ball top 4213 is disposed at an end of the vibrating diaphragm 4211 away from the magnetic circuit system 422. When the voice coil 4212 is energized, the voice coil 4212 drives the diaphragm 4211 to vibrate and generate sound under the action of the magnetic field force of the magnetic circuit system 422.

To sum up, the utility model discloses a sound generating mechanism is at the during operation, and the inside air of front chamber 200 and rear chamber 300 of speaker device 40 all can take place the vibration, and because rear chamber 300 is through accommodating space 80 and second opening 50 air intercommunication, consequently can promote the vibration of suspension vibrating part 60 in second opening 50, produces sound. Since the area of the rear cover 20 is large, the area of the vibrating member 60 can be also increased appropriately, so that the bass performance of the sound generating apparatus can be improved.

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. A sound generating device comprises a shell with an accommodating space and at least one loudspeaker device accommodated in the accommodating space, wherein the shell is provided with at least one first opening, and the loudspeaker device is communicated with the air outside the accommodating space through the first opening; the method is characterized in that: each loudspeaker device is provided with a front cavity communicated with the air outside the accommodating space and a rear cavity communicated with the air inside the accommodating space, and the front cavity is communicated with the air outside the accommodating space through the first opening; the sound generating device further comprises a second opening penetrating through the shell, the rear cavity is communicated with the air in the containing space, the second opening is arranged at the position, inside the containing space, of the rear cavity, the sound generating device further comprises a vibrating piece and a connecting piece, the vibrating piece is arranged at the position, at the interval, of the shell, of the vibrating piece, and the connecting piece is connected with the shell.

2. The sound generating apparatus of claim 1, wherein: the connecting piece include with the vibrating piece periphery is fixed and encircles vibrating piece peripheral first connecting portion, encircleing are in first connecting portion are kept away from vibrating piece one side periphery and with roll over the ring portion and encircle that first connecting portion are connected roll over the ring portion and keep away from first connecting portion one side periphery and with roll over the second connecting portion that the ring portion is connected, the second connecting portion are fixed on the shell.

3. The sound generating apparatus of claim 2, wherein: the folded ring part protrudes towards the inside of the accommodating space or towards the outside of the accommodating space.

4. A sound-generating device as claimed in any one of claims 2 or 3, wherein: the shell comprises a front cover, a rear cover and a frame, wherein the rear cover is arranged at an interval with the front cover, the frame is connected with the front cover and the rear cover, the front cover and the rear cover enclose the accommodating space, the first opening penetrates through the front cover, and the second opening penetrates through the rear cover.

5. The sound generating apparatus of claim 4, wherein: each speaker device including the casing that has the accommodation space and accept in sound production monomer in the accommodation space, sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm will the accommodation space separates into the antechamber with the back chamber, the casing is provided with at least one third opening, the antechamber passes through in proper order the third opening, first opening with accommodation space outside air intercommunication.

6. The sound generating apparatus of claim 5, wherein: the shell comprises a top wall and a side wall bent and extended from the periphery of the top wall, the loudspeaker device is fixed on the shell through the top wall or the side wall, and the third opening penetrates through the top wall or the side wall.

7. The sound generating apparatus of claim 6, wherein: the sound production monomer is still including the drive the magnetic circuit of vibrating diaphragm vibration sound production, magnetic circuit includes the yoke and is fixed in the magnetic circuit subassembly of yoke, the yoke is fixed in lateral wall and at least part with the lateral wall interval sets up and forms the passageway, the back chamber passes through in proper order the passageway, accommodating space inside with second opening air intercommunication.

8. The sound generating apparatus of claim 7, wherein: the magnetic yoke is of a rectangular structure, and the magnetic yoke is sunken from the corner part of the magnetic yoke to the position far away from the side wall and forms the channel by being surrounded with the side wall.

9. The sound generating apparatus of claim 1 wherein said attachment member is made of an elastomeric material.

10. The sound generating apparatus according to claim 4, wherein said frame includes two long axis walls disposed opposite to each other and two short axis walls disposed opposite to each other and connecting said two long axis walls, and said speaker unit has two, and said two speaker units are respectively fixed to said two short axis walls.

11. The sound generating apparatus as claimed in claim 10, wherein said second opening is opened at a central position of said rear cover.