CN211744718U

CN211744718U - Sound production device

Info

Publication number: CN211744718U
Application number: CN202020264995.3U
Authority: CN
Inventors: 肖波; 令狐荣林; 章统
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-10-23
Anticipated expiration: 2030-03-05
Also published as: WO2021174576A1

Abstract

The utility model provides a two sound production devices that sound production face can vibrate sound alone, it includes the basin frame, vibration system and magnetic circuit, vibration system includes first vibration system and second vibration system, first vibration system includes vibrating diaphragm and last voice coil loudspeaker voice coil, second vibration system includes vibrating diaphragm and lower voice coil loudspeaker voice coil down, go up the vibrating diaphragm, vibrating diaphragm and basin frame enclose to close down and form accommodating space, magnetic circuit includes first splint and second splint, magnetic circuit includes interior magnetic part, and form interior magnetic part in magnetic gap between the magnetic part and with in form the outer magnetic part in magnetic gap between the magnetic part, first splint, second splint and well magnetic part separate accommodating space for the first back chamber and the second back chamber that each other do not communicate, run through on the basin frame and be equipped with the first back chamber and the first back chamber of external intercommunication and with the second back chamber and the second leakage hole of external intercommunication. The utility model provides a vocal device is showing and is improving the magnetic circuit utilization ratio.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to an apply to vocal device of portable electronic product.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices.

The sound production device in the related art comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises an upper vibrating diaphragm and a lower vibrating diaphragm which are respectively fixed on two opposite sides of the basin frame and a voice coil for driving the upper vibrating diaphragm and the lower vibrating diaphragm to vibrate and produce sound. The sound production device is provided with the upper vibrating diaphragm and the lower vibrating diaphragm, so that the requirement of special occasions with double-sided sound production requirements can be met. However, the upper diaphragm and the lower diaphragm of the sound production device are driven by only one voice coil, so that the upper diaphragm and the lower diaphragm cannot independently vibrate to produce sound, and the use occasion is limited.

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

[ Utility model ] content

An object of the utility model is to provide a sound production device to two sound production faces of solving the sound production device among the correlation technique can not vibrate the problem of sound production alone.

In order to achieve the above object, the present invention provides a sound generating device, including a frame, a vibration system and a magnetic circuit system, wherein the vibration system includes a first vibration system and a second vibration system, the first vibration system includes an upper vibration film and an upper voice coil, the upper vibration film vibrates and generates sound, the second vibration system includes a lower vibration film and a lower voice coil, the lower vibration film vibrates and generates sound, the upper vibration film and the lower vibration film are respectively fixed at two opposite ends of the frame and form an accommodating space with the frame, the magnetic circuit system includes a first clamp plate and a second clamp plate, the first clamp plate is fixed on the frame and has an annular shape, the second clamp plate is arranged at an interval opposite to the first clamp plate, and a through hole is arranged in the middle of the first clamp plate and penetrates through the first clamp plate and is opposite to the second clamp plate; the magnetic circuit system comprises an inner magnetic part fixed on the second clamping plate, a middle magnetic part arranged on the periphery of the inner magnetic part and forming an inner magnetic gap with the inner magnetic part, and an outer magnetic part arranged on the periphery of the middle magnetic part and forming an outer magnetic gap with the middle magnetic part, the first clamping plate is fixed on one side, facing the upper vibrating diaphragm, of the middle magnetic part and the outer magnetic part, the second clamping plate is fixed on one side, facing the lower vibrating diaphragm, of the inner magnetic part and the middle magnetic part, the inner magnetic part is opposite to the through hole, the upper voice coil is inserted into the inner magnetic gap through the through hole, and the lower voice coil is inserted into the outer magnetic gap; the first clamping plate, the second clamping plate and the middle magnetic part divide the accommodating space into a first rear cavity and a second rear cavity which are not communicated with each other; and a first leakage hole for communicating the first rear cavity with the outside and a second leakage hole for communicating the second rear cavity with the outside are arranged on the basin frame in a penetrating manner.

Preferably, the outer magnetic part has a leakage passage communicating the outer magnetic gap and the second leakage hole, and the leakage passage is disposed opposite to the second leakage hole.

Preferably, the outer magnetic part is composed of a plurality of third permanent magnets arranged around the middle magnetic part, and two adjacent third permanent magnets are arranged at intervals, wherein the two adjacent third permanent magnets are arranged at intervals to form the leakage channel.

Preferably, the lower voice coil and the lower vibrating diaphragm are connected through a framework, and the framework comprises a first connecting part connected with the lower vibrating diaphragm, a second connecting part connected with the lower voice coil and a third connecting part connected with the first connecting part and the second connecting part.

Preferably, the first connecting portion and the second connecting portion are both in a ring structure.

Preferably, the framework is an integrally formed structure.

Preferably, the first vibration system further includes an upper dome disposed in the accommodating space, the second vibration system further includes a lower dome disposed in the accommodating space, two opposite sides of the upper dome in the vibration direction are respectively connected to the upper diaphragm and the upper voice coil, and two opposite sides of the lower dome in the vibration direction are respectively connected to the first connecting portion and the lower diaphragm.

Preferably, the basin frame is of a rectangular structure, and the first leakage hole and the second leakage hole are located on the same side wall of the basin frame in the long axis direction.

Preferably, the magnetic circuit system further includes a first magnetic conduction plate fixed to one side of the inner magnetic portion facing the upper vibrating diaphragm and a second magnetic conduction plate fixed to one side of the outer magnetic portion facing the lower vibrating diaphragm, the second magnetic conduction plate is fixed to the basin stand, and the first clamping plate and the second clamping plate are both magnetic conduction plates.

Preferably, a recessed portion is recessed at a position where at least one of the first clamp plate and the second magnetic conductive plate faces the leakage channel, and an opening of the recessed portion faces the leakage channel.

Preferably, the sounder further comprises an upper end cover and a lower end cover, the upper vibrating diaphragm clamp is arranged between the basin frame and the upper end cover, the upper end cover is provided with a first sounding hole for the outward sounding of the upper vibrating diaphragm, the lower vibrating diaphragm clamp is arranged between the basin frame and the lower end cover, and the lower end cover is provided with a second sounding hole for the outward sounding of the lower vibrating diaphragm.

Compared with the prior art, the sound production device of the utility model drives the upper vibrating diaphragm and the lower vibrating diaphragm to produce sound through the upper voice coil and the lower voice coil respectively, so that the upper vibrating diaphragm and the lower vibrating diaphragm can work independently, and when the upper vibrating diaphragm vibrates, the airflow in the first rear cavity can circulate with the outside through the first leakage hole, and when the lower vibrating diaphragm vibrates, the airflow in the second rear cavity can circulate with the outside through the second leakage hole; meanwhile, the first rear cavity and the second rear cavity are not communicated with each other due to the magnetic circuit system, so that the sound production device can meet the requirement of double-sided sound production, and the upper vibrating diaphragm and the lower vibrating diaphragm are not influenced by each other in the vibrating process. In addition, the upper voice coil and the lower voice coil are respectively inserted into the inner magnetic gap and the outer magnetic gap of the magnetic circuit system, so that the upper vibrating diaphragm and the lower vibrating diaphragm share the same magnetic circuit system, and the utilization rate of a magnetic circuit is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is an exploded view of a preferred embodiment of the sound device of the present invention;

FIG. 2 is a perspective view of the assembled sound producing device of FIG. 1;

FIG. 3 is a cross-sectional view of the sound device of FIG. 2 taken along the direction A-A;

FIG. 4 is a cross-sectional view of the sound device of FIG. 2 taken along the direction B-B;

FIG. 5 is an assembled structural view of a portion of the sound device shown in FIG. 1;

FIG. 6 is a schematic assembled structure view of the magnetic circuit system of the sound generating device shown in FIG. 1;

fig. 7 is a schematic structural view of another angle of the magnetic circuit system shown in fig. 6.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 7, the sound generating device 100 has two sound generating surfaces, and is suitable for electronic devices with two-sided sound generating requirements, such as a two-sided mobile phone. The sounding device 100 comprises a basin frame 1, a vibration system 3 fixed on the basin frame 1, and a magnetic circuit system 5 for driving the vibration system 3 to vibrate and sound.

The basin frame 1 is provided with a first leakage hole 1A and a second leakage hole 1B in a penetrating manner. As shown in fig. 1, 2 and 3, the frame 1 is a rectangular structure, and the first leakage hole 1A and the second leakage hole 1B are located on the same side wall of the frame 1. Specifically, the first leakage hole 1A and the second leakage hole 1B are located on a side wall along the long axis direction, may be located on the same side wall along the long axis direction, may also be located on the same side wall along the long axis direction, and of course, may also be located on a side wall along the short axis direction, which is not limited herein.

Vibration system 3 includes first vibration system 31 and second vibration system 33 that relative interval set up, first vibration system 31 includes vibrating diaphragm 311 and drive go up the last voice coil 313 of vibrating diaphragm 311 vibration sound production, second vibration system 33 includes vibrating diaphragm 331 and drive down vibrating diaphragm 331 vibration sound production's lower voice coil 333, go up vibrating diaphragm 311 with vibrating diaphragm 331 is fixed in respectively down the relative both ends of basin frame 1 and with basin frame 1 encloses to close and forms accommodating space 100A.

In this embodiment, the lower voice coil 333 and the lower diaphragm 331 are connected by a bobbin 36, and the bobbin 36 includes a first connection portion 361 connected to the lower diaphragm 331, a second connection portion 362 connected to the lower voice coil 333, and a third connection portion 363 connecting the first connection portion 361 and the second connection portion 362.

In this embodiment, the first connecting portion 361 and the second connecting portion 362 are both in a ring structure. It is to be understood that the first connection portion 361 and the second connection portion 362 are not limited to this embodiment; for example, in other embodiments, the first connecting portion 361 may be configured to have a flat plate shape; the second connection part 362 may be formed of a plurality of separate structures, and each separate structure may be connected to the lower voice coil 333.

In this embodiment, the frame 36 is an integrally formed structure. It is understood that, in other embodiments, the first connection portion 361, the second connection portion 362 and the third connection portion 363 may be formed by welding.

In order to enhance the vibration effect of the upper diaphragm 311 and the lower diaphragm 331 to improve the acoustic performance of the sounder device 100. In this embodiment, the first vibration system 31 further includes an upper dome 315 disposed in the accommodating space 100A, the second vibration system 33 further includes a lower dome 335 disposed in the accommodating space 100A, two opposite sides of the upper dome 37 along the vibration direction X are respectively connected to the upper diaphragm 311 and the upper voice coil 313, and two opposite sides of the lower dome 38 along the vibration direction X are respectively connected to the first connecting portion 361 and the lower diaphragm 331. It is understood that, in other embodiments, the upper dome 315 and the lower dome 335 may be disposed outside the receiving space 100A, and two opposite sides of the upper diaphragm 311 along the vibration direction X are respectively connected to the upper voice coil 313 and the upper dome 315, and two opposite sides of the lower diaphragm 331 along the vibration direction X are respectively connected to the lower dome 335 and the first connecting portion 361.

As shown in fig. 1, fig. 3 and fig. 4, the sound generating device 100 further includes an upper end cover 7 and a lower end cover 9, the upper diaphragm 311 is clamped between the basin frame 1 and the upper end cover 7, the upper end cover 7 has a first sound emitting hole 71 for the upper diaphragm 311 to emit sound outwards, the lower diaphragm 331 is clamped between the basin frame 1 and the lower end cover 9, and the lower end cover 9 has a second sound emitting hole 91 for the lower diaphragm 331 to emit sound outwards. The upper end cover 7 and the lower end cover 9 are arranged to enable the upper diaphragm 311 and the lower diaphragm 331 to be better fixed on the frame 1.

The magnetic circuit system 5 comprises a first clamping plate 54 fixed on the basin frame 1 and a second clamping plate 55 opposite to the first clamping plate 54 and arranged at intervals, and a through hole 54A penetrating through the first clamping plate 54 and opposite to the second clamping plate 55 is arranged in the middle of the first clamping plate 54. The magnetic circuit system 5 further includes an inner magnetic portion 51, a middle magnetic portion 52 disposed on the circumferential side of the inner magnetic portion 51 and forming an inner magnetic gap 5A with the inner magnetic portion 51, and an outer magnetic portion 53 disposed on the circumferential side of the middle magnetic portion 52 and forming an outer magnetic gap 5B with the middle magnetic portion 52, the first clamping plate 54 is fixed to one side of the middle magnetic portion 52 and the outer magnetic portion 53 facing the upper diaphragm 31, and the second clamping plate 55 is fixed to one side of the inner magnetic portion 51 and the middle magnetic portion 52 facing the lower diaphragm 33. Wherein, the inner magnetic part 51 is opposite to the through hole 54A, the upper voice coil 313 is inserted into the inner magnetic gap 5A through the through hole 54A, the lower voice coil 333 is inserted into the external magnetic gap 5B, the first clamping plate 54, the second clamping plate 55 and the middle magnetic part 52 divide the accommodating space 100A into a first rear cavity 100B and a second rear cavity 100C which are not communicated with each other (specifically, the upper diaphragm 311, the basin frame 1, the first clamping plate 54, the middle magnetic part 52 and the second clamping plate 55 surround to form the first rear cavity 100B, and the lower diaphragm 331, the basin frame 1, the first clamping plate 54, the middle magnetic part 52 and the second clamping plate 55 surround to form the second rear cavity 100C), the first rear chamber 100B communicates with the first leak hole 1A and communicates with the outside through the first leak hole 1A, the second rear chamber 100C communicates with the second leak hole 1B and communicates with the outside through the second leak hole 1B. After the upper voice coil 313 is electrified, under the action of the magnetic force of the magnetic circuit system 5, the upper diaphragm 311 vibrates together with the upper voice coil 313; after the lower voice coil 333 is energized, the lower diaphragm 331 and the bobbin 36 vibrate together with the lower voice coil 333 under the magnetic force of the magnetic circuit system 5. Because go up vibrating diaphragm 311 with lower vibrating diaphragm 331 passes through respectively go up voice coil 313 with voice coil 333 drives the sound production down to make sound production device 100 can not only satisfy the demand of two-sided sound production, moreover go up vibrating diaphragm 311 with lower vibrating diaphragm 331 can the autonomous working, just during the vibration of last vibrating diaphragm 311, the air current in first back chamber 100B can pass through first leakage hole 1A and external circulation, during lower vibrating diaphragm 331 vibrates, the air current in second back chamber 100C can pass through second leakage hole 1B and external circulation. Meanwhile, the magnetic circuit system 5 makes the first back cavity 100B and the second back cavity 100C not communicate with each other, so that the vibration processes of the upper diaphragm 311 and the lower diaphragm 331 do not affect each other. In addition, the upper voice coil 313 and the lower voice coil 333 are respectively inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, so that the upper diaphragm 311 and the lower diaphragm 331 share the same magnetic circuit system, and the utilization rate of the magnetic circuit is improved.

In the present embodiment, the outer magnetic part 53 has a leakage path 53A communicating the outer magnetic gap 5B and the second leakage hole 1B, and the leakage path 53A is disposed opposite to the second leakage hole 1B. That is, the second leak hole 1B communicates with the second rear chamber 100C through the outer magnetic gap 5B and the leak passage 53A (i.e., the second leak hole 1B indirectly communicates with the second rear chamber 100C). It is understood that, in other embodiments, the second leakage hole 1B may be located at a position of the frame 1 corresponding to the second rear cavity 100C (i.e. the second leakage hole 1B directly communicates with the second rear cavity 100C), and accordingly, the outer magnetic part may not have a leakage path, but the height of the outer magnetic part 53 in the vibration direction cannot be too high to prevent the outer magnetic part 53 from completely covering the second leakage hole 1B, in other words, the second leakage hole 1B should extend toward the lower diaphragm 331 to beyond the outer magnetic part 53 to communicate the outer magnetic gap 5B with the outside in a case that the outer magnetic part 53 is not provided with a leakage path.

In this embodiment, the magnetic circuit system 5 further includes a first magnetic conduction plate 56 fixed to one side of the inner magnetic portion 51 facing the upper diaphragm 311, and a second magnetic conduction plate 57 fixed to one side of the outer magnetic portion 53 facing the lower diaphragm 331, the second magnetic conduction plate 57 is fixed to the basin stand 1, and the first clamping plate 54 and the second clamping plate 55 are both magnetic conduction plates. Through the magnetic conduction effect of the first clamping plate 54, the second clamping plate 55, the first magnetic conduction plate 56 and the second magnetic conduction plate 57, the magnetic flux in the inner magnetic gap 5A and the outer magnetic gap 5B can be effectively increased, so that the acoustic performance of the sound production device 100 can be improved, and the sound production device 100 is also beneficial to the light and thin design. Meanwhile, as the first clamping plate 54 and the second magnetic conduction plate 57 are fixed on the frame 1, the magnetic circuit system 5 can be better fixed on the frame 1.

In this embodiment, the first clamping plate 54 and the first magnetic conduction plate 56 are located on the same horizontal plane, and the second clamping plate 55 and the second magnetic conduction plate 57 are also located on the same horizontal plane.

In this embodiment, a recessed portion 58 is recessed at a position where at least one of the first clamp plate 54 and the second magnetic conductive plate 57 faces the leakage path 53A, and an opening of the recessed portion 58 faces the leakage path 53A. As shown in fig. 1 and 3, the recessed portion 58 is recessed at a position where the second magnetic conductive plate 57 faces the leakage passage 53A. The provision of the recess 58 can further increase the volume of the passage communicating the outer magnetic gap 5B and the second leak hole 1B.

In the present embodiment, the inner magnetic portion 51 is a first permanent magnet. It is understood that, in other embodiments, the inner magnetic portion 51 may also be formed by two, three, and the like first permanent magnets which are stacked along the vibration direction X, and a pole core may also be interposed between two adjacent first permanent magnets.

In the present embodiment, the middle magnetic part 52 is a second permanent magnet. It is understood that, in other embodiments, the middle magnetic part 52 may be formed by overlapping two, three, etc. second permanent magnets in a continuous annular structure along the vibration direction X, and a pole core may be further interposed between two adjacent second permanent magnets.

In this embodiment, the outer magnetic part 53 is formed by a plurality of third permanent magnets arranged around the middle magnetic part 52, and two adjacent third permanent magnets are arranged at intervals. Wherein, two of the third permanent magnets adjacent to the second leakage hole 1B are disposed at an interval to form the leakage passage 53A. It should be understood that the arrangement manner of the outer magnetic part 53 is not limited to this, for example, in other embodiments, the outer magnetic part 53 may also be a third permanent magnet in a ring structure, and accordingly, a leakage channel communicating the outer magnetic gap and the second leakage hole needs to be opened at a position of the third permanent magnet corresponding to the second leakage hole.

The first permanent magnet, the second permanent magnet and the third permanent magnet are usually magnetic steels. It is to be understood that the first permanent magnet, the second permanent magnet, and the third permanent magnet may be natural magnets.

Compared with the prior art, the sound production device of the present invention drives the upper diaphragm 311 and the lower diaphragm 331 to produce sound through the upper voice coil 313 and the lower voice coil 333 respectively, so that the sound production device 100 can not only meet the requirement of two-sided sound production, but also the upper diaphragm 311 and the lower diaphragm 331 can work independently, and when the upper diaphragm 311 vibrates, the airflow in the first rear cavity 100B can circulate with the outside through the first leakage hole 1A, and when the lower diaphragm 331 vibrates, the airflow in the second rear cavity 100C can circulate with the outside through the second leakage hole 1B; meanwhile, the magnetic circuit system 5 makes the first back cavity 100B and the second back cavity 100C not communicate with each other, so that the vibration processes of the upper diaphragm 311 and the lower diaphragm 331 do not affect each other. In addition, the upper voice coil 313 and the lower voice coil 333 are respectively inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, so that the upper diaphragm 311 and the lower diaphragm 331 share the same magnetic circuit system, thereby improving the utilization rate of the magnetic circuit.

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 sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixedly held on the basin frame, the vibration system comprises a first vibration system and a second vibration system which are arranged at an interval, the first vibration system comprises an upper vibrating diaphragm and an upper voice coil for driving the upper vibrating diaphragm to vibrate and sound, the second vibration system comprises a lower vibrating diaphragm and a lower voice coil for driving the lower vibrating diaphragm to vibrate and sound, the upper vibrating diaphragm and the lower vibrating diaphragm are respectively fixed at two opposite ends of the basin frame and form an accommodating space with the basin frame in a surrounding manner, the magnetic circuit system comprises a first clamping plate which is fixed on the basin frame and is annular and a second clamping plate which is arranged at an interval opposite to the first clamping plate, and a through hole which penetrates through the first clamping plate and is opposite to the second clamping plate is arranged in the middle of the first clamping plate; the magnetic circuit system comprises an inner magnetic part fixed on the second clamping plate, a middle magnetic part arranged on the periphery of the inner magnetic part and forming an inner magnetic gap with the inner magnetic part, and an outer magnetic part arranged on the periphery of the middle magnetic part and forming an outer magnetic gap with the middle magnetic part, the first clamping plate is fixed on one side, facing the upper vibrating diaphragm, of the middle magnetic part and the outer magnetic part, the second clamping plate is fixed on one side, facing the lower vibrating diaphragm, of the inner magnetic part and the middle magnetic part, the inner magnetic part is opposite to the through hole, the upper voice coil is inserted into the inner magnetic gap through the through hole, and the lower voice coil is inserted into the outer magnetic gap; the first clamping plate, the second clamping plate and the middle magnetic part divide the accommodating space into a first rear cavity and a second rear cavity which are not communicated with each other; and a first leakage hole for communicating the first rear cavity with the outside and a second leakage hole for communicating the second rear cavity with the outside are arranged on the basin frame in a penetrating manner.

2. The sounder device according to claim 1, wherein the outer magnet portion has a leakage path communicating the outer magnet gap and the second leakage hole, the leakage path being disposed opposite the second leakage hole.

3. The sounder device according to claim 2, wherein the outer magnet portion comprises a plurality of third permanent magnets disposed around the middle magnet portion, and two adjacent third permanent magnets are disposed at intervals, wherein two adjacent third permanent magnets are disposed at intervals to form the leakage path.

4. The sounding device according to claim 1, wherein the lower voice coil and the lower diaphragm are connected by a bobbin, and the bobbin comprises a first connecting portion connected to the lower diaphragm, a second connecting portion connected to the lower voice coil, and a third connecting portion connecting the first connecting portion and the second connecting portion.

5. The sounder device according to claim 4, wherein the first and second connection portions each have an annular configuration.

6. The sound production device of claim 4 or 5, wherein the skeleton is of unitary construction.

7. The sounding device according to claim 4, wherein the first vibration system further comprises an upper dome disposed in the receiving space, the second vibration system further comprises a lower dome disposed in the receiving space, opposite sides of the upper dome in the vibration direction are respectively connected to the upper diaphragm and the upper voice coil, and opposite sides of the lower dome in the vibration direction are respectively connected to the first connecting portion and the lower diaphragm.

8. The sounder device according to claim 1, wherein the frame has a rectangular configuration, and the first and second leak holes are located in a same side wall of the frame along the long axis.

9. The sounding device according to claim 2, wherein the magnetic circuit system further comprises a first magnetic conductive plate fixed to a side of the inner magnetic portion facing the upper diaphragm, and a second magnetic conductive plate fixed to a side of the outer magnetic portion facing the lower diaphragm, the second magnetic conductive plate being fixed to the frame, and the first clamping plate and the second clamping plate being magnetic conductive plates.

10. The sounder device according to claim 9, wherein a recess is recessed at a position where at least one of the first clamp plate and the second magnetic conductive plate faces the leakage channel, and an opening of the recess faces the leakage channel.

11. The sound production device according to claim 1, further comprising an upper end cover and a lower end cover, wherein the upper diaphragm clamp is arranged between the basin frame and the upper end cover, the upper end cover is provided with a first sound emitting hole for the upper diaphragm to emit sound outwards, the lower diaphragm clamp is arranged between the basin frame and the lower end cover, and the lower end cover is provided with a second sound emitting hole for the lower diaphragm to emit sound outwards.