CN215871825U

CN215871825U - Telephone receiver

Info

Publication number: CN215871825U
Application number: CN202121544962.5U
Authority: CN
Inventors: 杨虎虎; 印兆宇
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-02-18
Anticipated expiration: 2031-07-07

Abstract

The utility model provides a telephone receiver which comprises an upper cover, a lower cover and a sound production monomer, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sound production monomer is accommodated in the accommodating space, the lower cover comprises a bottom plate, a side wall and a supporting wall, the side wall extends from the periphery of the bottom plate to the upper cover, the supporting wall extends from the bottom plate to the upper cover and extends into the accommodating space, the upper cover is fixed on the side wall, the sound production monomer comprises a first vibrating diaphragm and a second vibrating diaphragm, the upper cover is provided with a narrow slit, the side wall is provided with a side hole, the first vibrating diaphragm, the second vibrating diaphragm, the supporting wall, the bottom plate, the side wall and the upper cover are enclosed to form a rear cavity, the telephone receiver also comprises a first sound absorption plate fixed on the supporting wall and the side wall, and the first sound absorption plate divides the rear cavity into a first rear cavity close to the upper cover and a second rear cavity close to the bottom plate; through set up first abatvoix at the back chamber, can attenuate vibration when the receiver is worked, reduce the sound leakage, reduce the influence to the acoustic performance of receiver, have better acoustic performance.

Description

Telephone receiver

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of sound-electricity conversion, in particular to a telephone receiver.

[ background of the utility model ]

The Receiver is also called Receiver, and English is Receiver. An electroacoustic device for converting an audio electric signal into an acoustic signal without acoustic leakage (or a 3.2 type high/low leakage loop according to ITU standard) is widely used in communication terminal devices such as mobile phones, fixed phones, and hearing aids to reproduce audio (voice and music).

The telephone receiver in the prior art not only has the top slot to play sound, also has the side opening to play sound, and the free upper vibrating diaphragm of sound production corresponds the top slot to play sound, and the free lower vibrating diaphragm of sound production corresponds the side opening to play sound, and sound production monomer sharing backsound chamber. When the receiver mode is adopted, sound needs to be emitted from narrow slits, and the common rear sound cavity can drive the lower vibrating diaphragm to vibrate to cause sound leakage of the side holes when vibrating; when a loudspeaker mode is adopted, the side holes are required to make sound, and when the shared rear sound cavity vibrates, the upper vibrating diaphragm is driven to vibrate, so that narrow-gap sound leakage is caused; the acoustic performance of the receiver is easily affected.

[ Utility model ] content

The utility model aims to provide a receiver which attenuates vibration and reduces sound leakage.

The technical scheme of the utility model is as follows:

the utility model provides a telephone receiver, which comprises an upper cover, a lower cover and a sound production single body, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sound production single body is accommodated in the accommodating space, the lower cover comprises a bottom plate, a side wall and a supporting wall, the side wall extends from the periphery of the bottom plate to the upper cover, the supporting wall extends from the bottom plate to the upper cover to the accommodating space, the upper cover is fixed on the side wall, the sound production single body comprises a basin frame, a magnetic circuit system and a vibration system, the basin frame is fixed on the supporting wall and the upper cover, the magnetic circuit system is accommodated in the basin frame, the vibration system is connected with the basin frame and driven by the magnetic circuit system to vibrate, the vibration system comprises a first vibrating diaphragm and a second vibrating diaphragm, the first vibrating diaphragm is connected with the basin frame and close to the upper cover, the basin frame, the first vibrating diaphragm and the upper cover are enclosed to form a first front cavity, and the upper cover is provided with a narrow gap communicated with the first front cavity, the second vibrating diaphragm the bottom plate with support the wall and enclose and close and form the second antechamber, the lateral wall set up with the side opening of second antechamber intercommunication, first vibrating diaphragm the second vibrating diaphragm the bottom plate the lateral wall support the wall with the upper cover encloses jointly and closes and form the back chamber, the receiver is still including being fixed in the lateral wall with support the first abatvoix of wall, first abatvoix will the back chamber is separated and is close to the first back chamber of upper cover and is close to the second back chamber of bottom plate.

Further, the side wall has a first inner side and a second inner side opposite to the first inner side, the support wall includes a first support wall extending from the first inner side to the second inner side and a second support wall extending from the bottom plate toward the upper cover, the first support wall is connected to the bottom plate, and the first sound absorbing plate is attached to a side of the first support wall away from the bottom plate and a side of the second support wall away from the bottom plate.

Furthermore, the first supporting wall and the second supporting wall surround to form a ring shape, and a second sound-absorbing plate is attached to the side of the first supporting wall close to the second rear cavity and the side of the second supporting wall close to the second rear cavity.

Further, the support walls further comprise a third support wall extending from the bottom plate towards the upper cover and a fourth support wall extending from the side of the third support wall far away from the bottom plate towards the upper cover, a positioning groove is formed between the fourth support wall and the third support wall, and the edge of the sounding unit close to the second diaphragm side is embedded in the positioning groove.

Further, the side opening is seted up keeping away from of lateral wall the second rear chamber side, the edge of side opening court extend in the accommodating space and form the backup pad, the backup pad is kept away from one side butt of lateral wall in the sound production monomer.

Furthermore, the upper cover is sunken from one side close to the first vibrating diaphragm towards the direction far away from the first vibrating diaphragm to form a groove, and the sounding monomer is connected to the opening of the groove.

Further, the upper cover is including being fixed in the roof of lateral wall and seted up the notch, connect in the edge of notch just is towards keeping away from the rampart and the lid that the free direction of sound production extends are located keeping away from of rampart the apron of the free side of sound production, the sound production monomer connect in the notch, rampart with the apron encloses to close and forms the recess, the intercommunication is seted up to the apron the recess the slot.

Further, the top plate, the supporting wall and the cover plate are integrally formed; or the top plate, the supporting wall and the cover plate are arranged in a split mode.

Furthermore, the first supporting wall is provided with a communication hole communicated with the second rear cavity.

Further, the sound production monomer is still including being fixed in fixed plate in the basin frame, magnetic circuit including connect in being close to of fixed plate first magnet steel group of upper cover side with connect in being close to of fixed plate second magnet steel group of lower cover side, first magnet steel group with second magnet steel group all has the magnetic gap, vibration system still including connect in first vibrating diaphragm and being located first coil in the magnetic gap of first magnet steel group with connect in the second vibrating diaphragm and being located the second coil in the magnetic gap of second magnet steel group, first vibrating diaphragm with first interval has between the fixed plate, first interval intercommunication first back cavity, the second vibrating diaphragm with the second interval has between the fixed plate, the second interval intercommunication the second back cavity.

The utility model has the beneficial effects that: according to the utility model, the rear cavity is divided into the first rear cavity close to the upper cover and the second rear cavity close to the bottom plate by arranging the first sound-absorbing plate in the rear cavity, when a receiver mode is adopted, the first vibrating diaphragm vibrates, and the first sound-absorbing plate in the rear cavity can attenuate vibration, so that the vibration of the second vibrating diaphragm is reduced, and the sound leakage of the side hole is reduced. When a loudspeaker mode is adopted, the second vibrating diaphragm vibrates, and the first sound-absorbing plate of the rear cavity can attenuate vibration, so that the vibration of the first vibrating diaphragm is reduced, and the sound leakage of the narrow gap is reduced; the vibration can be attenuated, the sound leakage is reduced, the influence on the acoustic performance of the receiver in use is reduced, and the better acoustic performance is achieved.

[ description of the drawings ]

Fig. 1 is a schematic overall structure diagram of a telephone receiver according to an embodiment of the present invention;

fig. 2 is an exploded view of a receiver according to an embodiment of the present invention;

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

FIG. 4 is a schematic view of the overall structure of the lower cover according to the embodiment of the present invention;

fig. 5 is an enlarged view of portion a of fig. 3 according to the present invention.

[ detailed description ] embodiments

The utility model is further described with reference to the following figures and embodiments.

As shown in fig. 1 to 4, the present invention provides a receiver, which includes an upper cover 1, a lower cover 3 enclosing with the upper cover 1 to form a receiving space 2, and a sound generating unit 4 received in the receiving space 2, wherein the lower cover 3 includes a bottom plate 31, a side wall 32 extending from the periphery of the bottom plate 31 toward the upper cover 1, and a supporting wall 33 extending from the bottom plate 31 toward the upper cover 1 into the receiving space 2, the upper cover 1 is fixed to the side wall 32, the sound generating unit 4 includes a frame 41 fixed to the supporting wall 33 and the upper cover 1, a magnetic circuit 42 received in the frame 41, and a vibration system 43 connected to the frame 41 and driven by the magnetic circuit 42 to vibrate, the vibration system 43 includes a first vibrating diaphragm 431 connected to the frame 41 near the upper cover 1 side and a second vibrating diaphragm 432 connected to the frame 41 near the bottom plate 31 side, the frame 41, the first vibrating diaphragm 431 and the upper cover 1 enclose to form a first front cavity 21, the upper cover 1 is provided with a narrow slit 11 communicating with the first front cavity 21, the second diaphragm 432, the bottom plate 31 and the supporting wall 33 are enclosed to form a second front cavity 22, the side wall 32 is provided with a side hole 34 communicated with the second front cavity 22, the first diaphragm 431, the second diaphragm 432, the bottom plate 31, the side wall 32, the supporting wall 33 and the upper cover 1 are enclosed together to form a rear cavity 23, the receiver further comprises a first sound-absorbing plate 5 fixed on the side wall 32 and the supporting wall 33, and the first sound-absorbing plate 5 divides the rear cavity 23 into a first rear cavity 231 close to the upper cover 1 and a second rear cavity 232 close to the bottom plate 31.

The frame 41 is used for supporting the vibration system 43 and the magnetic circuit system 42, the first vibrating diaphragm 431 and the second vibrating diaphragm 432 on two opposite sides are adopted for vibration and sound production, the vibration directions of the first vibrating diaphragm 431 and the second vibrating diaphragm 432 are opposite, and the self vibration of the receiver can be counteracted because the driving force provided by the magnetic circuit system 42 is the same; utilize first abatvoix 5 to cut apart back cavity 23, can not reduce actual back cavity 23 size, through set up first abatvoix 5 at back cavity 23, separate back cavity 23 for first back cavity 231 that is close to upper cover 1 and second back cavity 232 that is close to bottom plate 31, when adopting the earphone mode, first vibrating diaphragm 431 vibrates, and first abatvoix 5 of back cavity 23 can attenuate the vibration, leads to second vibrating diaphragm 432 to vibrate and reduce, and side opening 34 leaks the sound and reduces. When the speaker mode is adopted, the second diaphragm 432 vibrates, and the first sound-absorbing plate 5 of the rear cavity 23 can attenuate the vibration, so that the vibration of the first diaphragm 431 is reduced, and the sound leakage of the narrow gap 11 is reduced; the first sound-absorbing plate 5 can attenuate the vibration of the first diaphragm 431 and the second diaphragm 432, reduce the sound leakage of the side hole 34 and the narrow slit 11, reduce the influence on the acoustic performance of the receiver in an earphone mode or a loudspeaker mode, and have better acoustic performance.

Further, the side wall 32 has a first inner side 321 and a second inner side 322 opposite to the first inner side 321, the support wall 33 includes a first support wall 331 extending from the first inner side 321 to the second inner side 322 and a second support wall 332 extending from the base plate 31 toward the upper cover 1, the first support wall 331 is connected to the base plate 31, the first sound-absorbing plate 5 is attached to the side of the first support wall 331 away from the base plate 31 and the side of the second support wall 332 away from the base plate 31, and the first support wall 331 and the second support wall 332 are used for supporting the first sound-absorbing plate 5, so that the first sound-absorbing plate 5 is more firmly fixed and has better stability.

Further, the first support wall 331 and the second support wall 332 are enclosed to form a ring shape, and a second sound-absorbing plate is attached to the side of the first support wall 331 close to the second rear cavity 232 and the side of the second support wall 332 close to the second rear cavity 232. The second sound-absorbing plate can also play a role in attenuating the vibration of the first vibrating diaphragm 431 and the second vibrating diaphragm 432, reducing the sound leakage of the side hole 34 and the narrow slit 11, reducing the influence on the acoustic performance of the receiver in an earphone mode or a loudspeaker mode, and having better acoustic performance.

Further, the support wall 33 further includes a third support wall 333 extending from the bottom plate 31 toward the upper cover 1 and a fourth support wall 334 extending from the side of the third support wall 333 away from the bottom plate 31 toward the upper cover 1, a positioning groove 335 is formed between the fourth support wall 334 and the third support wall 333, and an edge of the sound-emitting unit 4 near the side of the second diaphragm 432 is embedded in the positioning groove 335. The bottom plate 31, the side wall 32, the third supporting wall 333 and the fourth supporting wall 334 are of an integrally formed structure, so that the structural stability of the structure is improved; the side opening 34 is opened in keeping away from second back chamber 232 side of lateral wall 32, and the edge of side opening 34 extends towards accommodating space 2 in and forms backup pad 35, and lateral wall 34 was kept away from to backup pad 35 one side butt in sound production monomer 4, makes sound production monomer 4's fixed more firm through backup pad 35, constant head tank 335, improves receiver acoustic performance's stability.

Further, the upper cover 1 is recessed from a side close to the first diaphragm 431 toward a direction far away from the first diaphragm 431 to form a groove, and the sounding unit 4 is connected to an opening of the groove; the upper cover 1 comprises a top plate 12 fixed on the side wall 32 and provided with a notch 121, a supporting wall 13 connected to the edge of the notch 121 and extending towards the direction far away from the sound generating monomer 4, and a cover plate 14 covering the side, far away from the sound generating monomer 4, of the supporting wall 13, the sound generating monomer 4 is connected to the notch 121, the supporting wall 13 and the cover plate 14 enclose to form a groove, the basin frame 41 and the first vibrating diaphragm 431 enclose to form a first front cavity 21, the cavity volume of the first front cavity 21 is effectively increased, the acoustic performance is improved, and the cover plate 14 is provided with a narrow slit 11 communicated with the groove and used for a telephone receiver to generate sound; the top plate 12, the supporting wall 13 and the cover plate 14 are integrally formed; alternatively, the top plate 12, the supporting wall 13 and the cover plate 14 are provided separately.

Further, referring to fig. 5, the sound generating unit 4 further includes a fixing plate 44 fixed in the frame 41, the magnetic circuit system 42 includes a first magnetic steel set 45 connected to the fixing plate 44 near the upper cover 1 side and a second magnetic steel set 46 connected to the fixing plate 44 near the lower cover 2 side, both the first magnetic steel set 45 and the second magnetic steel set 46 have magnetic gaps, the vibration system 43 further includes a first coil 47 connected to the first diaphragm 431 and located in the magnetic gap of the first magnetic steel set 45 and a second coil 48 connected to the second diaphragm 432 and located in the magnetic gap of the second magnetic steel set 46, a first space is provided between the first diaphragm 431 and the fixing plate 44, the first space is communicated with the first rear cavity 231, a second space is provided between the second diaphragm 432 and the fixing plate 44, and the second space is communicated with the second rear cavity 232; the first support wall 331 is provided with a communication hole 336 for communicating the second rear chamber 232; the air pressure of the second back chamber 232 is balanced by the communication hole 336, so that the receiver is not influenced by the pressure of the second back chamber 232, and the acoustic quality of the receiver is effectively improved.

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 utility model.

Claims

1. A receiver comprises an upper cover, a lower cover and a sound production unit, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sound production unit is accommodated in the accommodating space, the lower cover comprises a bottom plate, a side wall and a supporting wall, the side wall extends from the periphery of the bottom plate to the upper cover, the supporting wall extends from the bottom plate to the upper cover to the accommodating space, the upper cover is fixed on the side wall, the sound production unit comprises a basin frame, a magnetic circuit system and a vibration system, the basin frame is fixed on the supporting wall and the upper cover, the magnetic circuit system is accommodated in the basin frame, the vibration system is connected with the basin frame and driven by the magnetic circuit system to vibrate, the vibration system comprises a first vibration membrane and a second vibration membrane, the first vibration membrane is connected to the side of the basin frame close to the upper cover, the basin frame, the first vibration membrane and the upper cover are enclosed to form a first front cavity, and a narrow gap communicated with the first front cavity is formed in the upper cover, the second vibrating diaphragm the bottom plate with support the wall and enclose and close and form the second ante-chamber, the lateral wall set up with the side opening of second ante-chamber intercommunication, first vibrating diaphragm the second vibrating diaphragm the bottom plate the lateral wall support the wall with the upper cover encloses jointly and closes and form the back chamber, its characterized in that, the receiver still including be fixed in the lateral wall with support the first abatvoix of wall, first abatvoix will the back chamber is separated and is close to the first back chamber of upper cover and is close to the second back chamber of bottom plate.

2. A receiver according to claim 1, characterized in that: the side wall has a first inner side and a second inner side opposite to the first inner side, the support wall includes a first support wall extending from the first inner side to the second inner side and a second support wall extending from the bottom plate toward the upper cover, the first support wall is connected to the bottom plate, and the first sound-absorbing plate is attached to a side of the first support wall away from the bottom plate and a side of the second support wall away from the bottom plate.

3. A receiver according to claim 2, characterized in that: the first supporting wall and the second supporting wall are encircled to form a ring, and a second sound-absorbing plate is attached to the side, close to the second rear cavity, of the first supporting wall and the side, close to the second rear cavity, of the second supporting wall.

4. A receiver according to claim 2, characterized in that: the support walls further comprise a third support wall extending from the bottom plate towards the upper cover and a fourth support wall extending from the side, far away from the bottom plate, of the third support wall towards the upper cover, a positioning groove is formed between the fourth support wall and the third support wall, and the edge, close to the second diaphragm side, of the sounding monomer is embedded in the positioning groove.

5. A receiver according to claim 1, characterized in that: the side opening is seted up keeping away from of lateral wall the second rear chamber side, the edge of side opening court extend in the accommodating space and form the backup pad, the backup pad is kept away from one side butt of lateral wall in the sound production monomer.

6. A receiver according to claim 1, characterized in that: the upper cover is close to from first vibrating diaphragm one side is towards keeping away from the direction of first vibrating diaphragm is sunken and is formed the recess, the free connection of sound production in the opening part of recess.

7. A receiver according to claim 6, characterized in that: the upper cover is including being fixed in the lateral wall just sets up the roof of notch, connect in just keeping away from towards the edge of notch the rampart and the lid that the free direction of sound production extends are located keeping away from of rampart the apron of the free side of sound production, the sound production monomer connect in the notch, rampart with the apron encloses to close and forms the recess, the intercommunication is seted up to the apron the recess the slot.

8. A receiver according to claim 7, characterized in that: the top plate, the supporting wall and the cover plate are integrally formed; or the top plate, the supporting wall and the cover plate are arranged in a split mode.

9. A receiver according to claim 2, characterized in that: the first supporting wall is provided with a communicating hole which is communicated with the second rear cavity.

10. A receiver according to any of claims 1-9, characterized in that: the sound production monomer is still including being fixed in fixed plate in the basin frame, magnetic circuit including connect in being close to of fixed plate the first magnet steel group of upper cover side with connect in being close to of fixed plate the second magnet steel group of lower cover side, first magnet steel group with second magnet steel group all has the magnetic gap, vibration system still including connect in first vibrating diaphragm and being located first coil in the magnetic gap of first magnet steel group with connect in the second vibrating diaphragm just is located second coil in the magnetic gap of second magnet steel group, first vibrating diaphragm with first interval has between the fixed plate, first interval intercommunication first back chamber, the second vibrating diaphragm with the second interval has between the fixed plate, the second interval intercommunication the second back chamber.