CN111405422A - Sound production device - Google Patents

Sound production device Download PDF

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Publication number
CN111405422A
CN111405422A CN201911320227.3A CN201911320227A CN111405422A CN 111405422 A CN111405422 A CN 111405422A CN 201911320227 A CN201911320227 A CN 201911320227A CN 111405422 A CN111405422 A CN 111405422A
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CN
China
Prior art keywords
wall
magnetic
bowl
extension
vibrating
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Granted
Application number
CN201911320227.3A
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Chinese (zh)
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CN111405422B (en
Inventor
宋威
邵涛
陶伟伟
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Publication of CN111405422A publication Critical patent/CN111405422A/en
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Publication of CN111405422B publication Critical patent/CN111405422B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms

Abstract

The invention provides a sounding device, which comprises a basin frame, a vibration system supported on the basin frame and a magnetic circuit system with a magnetic gap, wherein the vibration system comprises: the vibrating diaphragm comprises a vibrating part, a corrugated ring part bent and extended from the periphery of the vibrating part and a fixing part bent and extended from the corrugated ring part and fixed on the basin stand; the framework comprises a flat wall and an extension wall, the flat wall is attached to one side, close to the magnetic circuit system, of the vibration part and used as a dome structure of the vibrating diaphragm, and the extension wall is bent and extended from the flat wall to the direction far away from the vibrating diaphragm; and the voice coil is inserted in the magnetic gap and fixedly connected with the extension wall, and drives the extension wall to vibrate so as to drive the flat wall to vibrate, thereby driving the vibration part to vibrate and produce sound. Compared with the related art, the sound production device has good acoustic performance and high assembly efficiency.

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 an electronic sound box product.
[ background of the invention ]
The sound generating device is also called a loudspeaker or a loudspeaker, and is applied to a sound box to convert an audio signal into sound for playing.
Related art's sound production device includes the basin frame, is fixed in the vibration system of basin frame and the magnetic circuit that has the magnetic gap, the magnetic circuit drive vibration system vibration sound production, vibration system is including being fixed in the basin frame is used for vibrating the vibrating diaphragm of sound production, laminate in the ball top of vibrating diaphragm is close to the skeleton of magnetic circuit one side and around locating the interpolation of skeleton is located the voice coil loudspeaker voice coil in magnetic gap.
However, in the sound generating device of the related art, the bobbin serves as a supporting structure to connect the dome and the voice coil, and during assembly, the concentricity of the bobbin and the dome needs to be strictly controlled to ensure the acoustic performance, so that the assembly efficiency is low, and even the yield of the assembled finished product is reduced.
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 good acoustic performance and high assembly efficiency.
In order to achieve the above object, the present invention provides a sound-producing device, including a frame, a vibration system supported on the frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the magnetic circuit system has a magnetic gap, and the vibration system includes:
the vibrating diaphragm comprises a vibrating part, a corrugated rim part bent and extended from the periphery of the vibrating part and a fixing part bent and extended from the corrugated rim part and fixed on the basin stand;
a skeleton comprising a flat wall and an extension wall; the flat plate wall is attached to one side, close to the magnetic circuit system, of the vibration part and is used as a dome structure of the vibrating diaphragm, and the extension wall is bent and extended from the flat plate wall to the direction far away from the vibrating diaphragm; and the number of the first and second groups,
and the voice coil is inserted in the magnetic gap and fixedly connected with the extension wall, and drives the extension wall to vibrate so as to drive the flat wall to vibrate, so that the vibration part is driven to vibrate and produce sound.
Preferably, the extension wall includes a first extension wall bent and extended from the flat wall toward a direction away from the vibration portion of the diaphragm, and a second extension wall bent and extended from the first extension wall toward a direction close to the magnetic circuit system, and the second extension wall abuts against an outer side of the voice coil and forms a fixed connection.
Preferably, the extension walls include three and are disposed at equal intervals from each other in the extension direction of the flat panel wall.
Preferably, the magnetic circuit system comprises a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl, and a abdicating groove which penetrates through the first magnetic bowl along the vertical vibration direction and is matched with the second extending wall;
the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame and a first magnetic bowl side wall which is bent and extended from the first magnetic bowl bottom wall to the direction close to the vibrating diaphragm, and the magnetic steel unit and the first magnetic bowl side wall jointly form the magnetic gap;
the abdicating groove extends along the vibration direction and penetrates through the side wall of the first magnetic bowl;
the first extension wall is annularly arranged on the outer side of the magnetic circuit system and is arranged at intervals, and the second extension wall extends into the magnetic gap through the abdicating groove.
Preferably, the basin frame comprises a bottom wall, an outer wall and an inner wall, the outer wall extends from the periphery of the bottom wall in a bending mode, the inner wall extends from the bottom wall in a bending mode, the outer wall is arranged around the inner wall and is spaced from the inner wall, the inner wall is provided with through holes penetrating through the inner wall, and the through holes extend along the vibration direction of the vibration system;
the bottom wall and the inner wall jointly enclose an accommodating space, the magnetic circuit system is arranged in the accommodating space, and the abdicating grooves and the through holes are arranged in a one-to-one opposite mode;
the first extension wall ring is located inner wall outside and interval set up, the second extension wall passes through in proper order the opening with the groove of stepping down extends to in the magnetic gap.
Preferably, the magnetic circuit system further comprises a second magnetic bowl covered on the magnetic steel unit, and the second magnetic bowl is arranged opposite to the first magnetic bowl; the second magnetism bowl includes second magnetism bowl diapire and second magnetism bowl lateral wall, second magnetism bowl diapire with first magnetism bowl diapire interval is just to setting up, second magnetism bowl lateral wall by second magnetism bowl diapire is to being close to first magnetism bowl diapire direction is buckled and is extended, the groove of stepping down also runs through second magnetism bowl lateral wall.
Preferably, the fixing portion of the diaphragm includes a first fixing portion and a second fixing portion; the first fixing part is annular and fixed on the outer wall, and the second fixing part is annular and fixed on the inner wall;
the folded ring part comprises a first folded ring part in an annular shape and a second folded ring part in an annular shape, and the first folded ring parts surround the second folded ring part and are spaced from each other; one side, far away from the second flange part, of the first flange part is connected with the first fixing part, and one side, far away from the first flange part, of the second flange part is connected with the second fixing part;
the vibrating part is annular, the vibrating part is positioned between the first flange part and the second flange part, the outer side of the vibrating part is connected with the first flange part, and the inner side of the vibrating part is connected with the second flange part;
the flat plate wall is attached to one side of the vibration part close to the magnetic circuit system.
Preferably, the vibrating portion is provided with a through hole penetrating therethrough, and the flat plate wall completely covers the through hole.
Preferably, the top surface of the magnetic circuit system is higher than the vibrating portion in the vibration direction, and the position of the maximum amplitude of the vibrating portion is lower than the top surface of the magnetic circuit system
Preferably, the vibration system further includes an auxiliary diaphragm, one side of the auxiliary diaphragm is fixed to the outer wall, and the other side of the auxiliary diaphragm is fixed to an end of the first extending wall away from the flat wall.
Compared with the prior art, in the sound production device, the voice coil is connected to the vibrating diaphragm through the framework, the framework comprises a flat plate wall and an extension wall, the flat plate wall is attached to one side, close to the magnetic circuit system, of the vibrating portion of the vibrating diaphragm to serve as a dome structure of the vibrating diaphragm, and the extension wall is bent and extended from the flat plate wall to the direction far away from the vibrating diaphragm; in the structure, the voice coil is fixed by the extension part, namely the framework and the vibrating diaphragm form a whole, so that the matching error of assembly between parts is reduced, the acoustic performance of the voice coil is improved, the assembly process is simplified, and the production efficiency is improved; in addition, the extension wall of the framework is bonded from the outer side of the voice coil, so that the control of the magnetic gap is more flexible, and the structure design is more convenient.
[ 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 a schematic view of a skeleton of the sound device according to the present invention;
fig. 5 is a schematic view of fig. 4 from another view angle.
[ 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. 1-5, the present invention provides a sound production device 100, which includes a frame 1, a vibration system 2, and a magnetic circuit system 3 having a magnetic gap 30. The vibration system 2 and the magnetic circuit system 3 are respectively supported on the basin frame 1, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and sound.
In this embodiment, the frame 1 includes a bottom wall 11, an outer wall 12 extending from the periphery of the bottom wall 11 in a bent manner, and an inner wall 13 extending from the bottom wall 11 in a bent manner, wherein the outer wall 12 surrounds the inner wall 13 and is spaced from the inner wall 13.
The inner wall 13 is provided with through openings 131 extending through it, the through openings 131 extending in the vibration direction of the vibration system 2.
The bottom wall 11 and the inner wall 13 together enclose an accommodating space 10.
The vibration system 2 includes: a diaphragm 21, a bobbin 22, a voice coil 23, and an auxiliary diaphragm 24.
The vibrating diaphragm 21 includes a vibrating portion 211, a bent portion 212 bent and extended from a periphery of the vibrating portion 211, and a fixing portion 213 bent and extended from the bent portion 212 and fixed to the frame 1.
In this embodiment, specifically, the fixing portion 213 is used for fixing the diaphragm 21 to the frame 1, and includes a first fixing portion 2131 and a second fixing portion 2132; the first fixing portion 2131 is annular and fixed to the outer wall 12, and the second fixing portion 2132 is annular and fixed to the inner wall 13.
The hinge portion 212 is used to improve elastic support and vibration amplitude when the vibration portion 211 vibrates, and includes a first hinge portion 2121 and a second hinge portion 2122. The first collar part 2121 is disposed around the second collar part 2122 and spaced apart from each other. The first hinge portion 2121 is connected to the first fixing portion 2131 at a side away from the second hinge portion 2122, and the second hinge portion 2122 is connected to the second fixing portion 2132 at a side away from the first hinge portion 2121.
The vibration portion 211 radiates sound waves to generate sound when vibrating. Specifically, the vibration portion 211 is annular, the vibration portion 211 is located between the first collar portion 2121 and the second collar portion 2122, the outer side of the vibration portion 211 is connected to the first collar portion 2121, and the inner side of the vibration portion 211 is connected to the second collar portion 2122.
The framework 22 includes a flat wall 221 and an extension wall 222.
In this embodiment, the flat wall 221 is attached to a side of the vibration portion 211 close to the magnetic circuit system 3 to serve as a dome structure of the diaphragm 21, and the extension wall 222 is bent and extended from the flat wall 221 in a direction away from the diaphragm 21, and is used for connecting with the voice coil 23 and supporting the voice coil 23. In the present embodiment, the flat wall 221 has a ring shape.
Preferably, the vibrating portion 211 has a through hole 2111 penetrating therethrough, and the flat wall 221 completely covers the through hole 2111. Compared with the vibration part 211, the flat plate wall 221 is made of a rigid material, so that the high-frequency acoustic performance of the sound generating device 100 is improved, the thickness of the vibrating diaphragm 21 can be reduced to a certain extent due to the arrangement of the through holes 2111, and the vibration space of the vibration part 211 is effectively increased.
The voice coil 23 is inserted into the magnetic gap 30 and is fixedly connected to the extension wall 222. The voice coil 23 drives the extension wall 222 to vibrate to drive the flat wall 221 to vibrate, so as to drive the vibration portion 211 to vibrate and generate sound.
In the above structure, the flat wall 221 of the framework 22 serves as a top ball structure of the diaphragm 21 to radiate sound waves, and the extension 222 is used for fixing the voice coil 23, i.e., the framework 22 and the diaphragm 21 form an integrated structure, so that the fitting error of assembly between parts is reduced, the acoustic performance is improved, the assembly process is simplified, and the production efficiency is improved.
Preferably, the extension wall 222 includes a first extension wall 2221 bent and extended from the flat wall 221 toward the vibration portion 211 away from the diaphragm 21, and a second extension wall 2222 bent and extended from the first extension wall 2221 toward the magnetic circuit system 3. The second extension wall 2222 abuts against the outer side of the voice coil 23 and forms a fixed connection. The structure realizes that the extension wall 222 of the framework 22 is bonded from the outer side of the voice coil 23 to form a support for the voice coil 23, the structural design is more flexible for controlling the magnetic gap 30, and the design of the whole structure of the sound generating device 100 is more convenient.
The extension wall 222 may be an integral annular structure or a split structure enclosing an annular structure, and in this embodiment, the extension wall 222 includes three and is disposed at equal intervals along the extension direction of the flat plate wall.
One side of the auxiliary diaphragm 24 is fixed to the outer wall 12, and the other side is fixed to an end of the first extension wall 2221 away from the flat wall 2222, so as to prevent the bobbin 22 from swinging laterally, thereby avoiding lateral swinging of the voice coil 23 and improving stability of the sound generating device 100.
The magnetic circuit system 3 includes a first magnetic bowl 31, a magnetic steel unit 32 accommodated and fixed in the first magnetic bowl 31, and a relief groove 33 penetrating the first magnetic bowl 31 along the vertical vibration direction and matching with the second extension wall 2222. That is, the shape and number of the escape grooves 33 are correspondingly matched with those of the second extension walls 2222.
Specifically, the first magnetic bowl 31 includes a first magnetic bowl bottom wall 311 that is supported and fixed to the frame 1 and a first magnetic bowl side wall 312 that is bent and extended from the first magnetic bowl bottom wall 311 toward the direction that is close to the diaphragm 21, and the magnetic steel unit 32 and the first magnetic bowl side wall 312 together form the magnetic gap 30. In this embodiment, the receding groove 33 extends along the vibration direction and penetrates through the first magnetic bowl side wall 312. The first extension wall 2221 is disposed around the outer side of the magnetic circuit system 3 at an interval, and the second extension wall 2222 extends into the magnetic gap 30 through the receding groove 33 and is connected to the voice coil 23.
Preferably, in the present embodiment, the magnetic circuit system 3 is installed in the accommodating space 10, and the relief grooves 33 are arranged opposite to the through holes 131 one by one. At this time, the first extension wall 2221 is annularly disposed on the outer side of the inner wall 13 and is disposed at an interval, and the second extension wall 2222 sequentially passes through the opening 131 and the receding groove 33 and extends into the magnetic gap 30 and is connected to the outer side of the voice coil 23.
In order to make the magnetic lines of force of the magnetic circuit system 3 more fully utilized, in this embodiment, the magnetic circuit system 3 further includes a second magnetic bowl 34 covering the magnetic steel unit 32, and the second magnetic bowl 34 guides the magnetic lines of force of the magnetic steel unit 32 on the side close to the diaphragm 21 back into the magnetic gap 30.
The second magnetic bowl 34 is arranged opposite to the first magnetic bowl 31. The second magnetic bowl 34 includes a second magnetic bowl bottom wall 341 and a second magnetic bowl side wall 342.
The second magnetic bowl bottom wall 341 is opposite to the first magnetic bowl bottom wall 311 at an interval, the second magnetic bowl side wall 342 is bent and extended from the second magnetic bowl bottom wall 341 toward the direction close to the first magnetic bowl bottom wall 311, and the second magnetic bowl side wall 342 can abut against the first magnetic bowl side wall 312 and can also be spaced from the first magnetic bowl side wall 312. At this time, the receding groove 33 also penetrates through the second magnetic bowl side wall 342, so as to provide a more sufficient movement space for the second extending wall 2222 of the framework 22, thereby improving reliability. When the receding groove 33 on the second magnetic bowl side wall 342 extends to a height exceeding the diaphragm 21 along the vibration direction, a ring member 4 fixed on the second magnetic side wall 342 and completely covering the receding groove 33 is arranged on the surface of the diaphragm 21 far away from the magnetic circuit system 3.
Because the vibrating diaphragm 21 is fixed on the outer wall 12 and the inner wall 13 of the basin frame 1, the upper portion of the accommodating space 10 enclosed by the inner wall 13 can be exposed, in this embodiment, preferably, after the magnetic circuit system 3 is installed in the accommodating space 10, the top surface of the magnetic circuit system 3 is higher than the vibrating portion 211 (specifically, the flat plate wall 221 serving as a dome) along the vibrating direction, an exposed structure is formed, and the position of the maximum amplitude of the vibrating portion 211 is lower than or parallel to the top surface of the magnetic circuit system 3, that is, the vibrating diaphragm 21 surrounds and wraps the top of the magnetic circuit system 3 in the horizontal direction, so that the space of the product in the vibrating direction is saved, and the thickness of the product is effectively reduced.
Compared with the prior art, in the sound production device, the voice coil is connected to the vibrating diaphragm through the framework, the framework comprises a flat plate wall and an extension wall, the flat plate wall is attached to one side, close to the magnetic circuit system, of the vibrating portion of the vibrating diaphragm to serve as a dome structure of the vibrating diaphragm, and the extension wall is bent and extended from the flat plate wall to the direction far away from the vibrating diaphragm; in the structure, the voice coil is fixed by the extension part, namely the framework and the vibrating diaphragm form a whole, so that the matching error of assembly between parts is reduced, the acoustic performance of the voice coil is improved, the assembly process is simplified, and the production efficiency is improved; in addition, the extension wall of the framework is bonded from the outer side of the voice coil, so that the control of the magnetic gap is more flexible, and the structure design is more convenient.
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 (10)

1. A sounder which comprises a frame, a vibration system supported on the frame, and a magnetic circuit system for driving the vibration system to vibrate and sound, wherein the magnetic circuit system has a magnetic gap, the vibration system comprises:
the vibrating diaphragm comprises a vibrating part, a corrugated rim part bent and extended from the periphery of the vibrating part and a fixing part bent and extended from the corrugated rim part and fixed on the basin stand;
a skeleton comprising a flat wall and an extension wall; the flat plate wall is attached to one side, close to the magnetic circuit system, of the vibration part and is used as a dome structure of the vibrating diaphragm, and the extension wall is bent and extended from the flat plate wall to the direction far away from the vibrating diaphragm; and the number of the first and second groups,
and the voice coil is inserted in the magnetic gap and fixedly connected with the extension wall, and drives the extension wall to vibrate so as to drive the flat wall to vibrate, so that the vibration part is driven to vibrate and produce sound.
2. The sounding device according to claim 1, wherein the extension wall includes a first extension wall extending from the flat wall to a direction away from the vibrating portion of the diaphragm, and a second extension wall extending from the first extension wall to a direction close to the magnetic circuit system, and the second extension wall abuts against an outer side of the voice coil and forms a fixed connection.
3. The sounder device according to claim 2, wherein the extension walls comprise three and are equally spaced from one another in a direction of extension of the flat plate wall.
4. The sounding device according to claim 2 or 3, wherein the magnetic circuit system comprises a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl, and a relief groove which penetrates through the first magnetic bowl along a vertical vibration direction and is matched with the second extension wall;
the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame and a first magnetic bowl side wall which is bent and extended from the first magnetic bowl bottom wall to the direction close to the vibrating diaphragm, and the magnetic steel unit and the first magnetic bowl side wall jointly form the magnetic gap;
the abdicating groove extends along the vibration direction and penetrates through the side wall of the first magnetic bowl;
the first extension wall is annularly arranged on the outer side of the magnetic circuit system and is arranged at intervals, and the second extension wall extends into the magnetic gap through the abdicating groove.
5. The sounder device according to claim 4, wherein the frame includes a bottom wall, an outer wall extending from a periphery of the bottom wall in a bent manner, and an inner wall extending from the bottom wall in a bent manner, the outer wall being disposed around the inner wall in a spaced manner, the inner wall being provided with through openings extending therethrough, the through openings extending in a vibration direction of the vibration system;
the bottom wall and the inner wall jointly enclose an accommodating space, the magnetic circuit system is arranged in the accommodating space, and the abdicating grooves and the through holes are arranged in a one-to-one opposite mode;
the first extension wall ring is located inner wall outside and interval set up, the second extension wall passes through in proper order the opening with the groove of stepping down extends to in the magnetic gap.
6. The sounder device according to claim 4, wherein the magnetic circuit system further comprises a second magnetic bowl covered on the magnetic steel unit, and the second magnetic bowl is arranged opposite to the first magnetic bowl; the second magnetism bowl includes second magnetism bowl diapire and second magnetism bowl lateral wall, second magnetism bowl diapire with first magnetism bowl diapire interval is just to setting up, second magnetism bowl lateral wall by second magnetism bowl diapire is to being close to first magnetism bowl diapire direction is buckled and is extended, the groove of stepping down also runs through second magnetism bowl lateral wall.
7. The sounding device according to claim 5, wherein the fixing portion of the diaphragm comprises a first fixing portion and a second fixing portion; the first fixing part is annular and fixed on the outer wall, and the second fixing part is annular and fixed on the inner wall;
the folded ring part comprises a first folded ring part in an annular shape and a second folded ring part in an annular shape, and the first folded ring parts surround the second folded ring part and are spaced from each other; one side, far away from the second flange part, of the first flange part is connected with the first fixing part, and one side, far away from the first flange part, of the second flange part is connected with the second fixing part;
the vibrating part is annular, the vibrating part is positioned between the first flange part and the second flange part, the outer side of the vibrating part is connected with the first flange part, and the inner side of the vibrating part is connected with the second flange part;
the flat plate wall is attached to one side of the vibration part close to the magnetic circuit system.
8. The sounder device according to claim 7, wherein the vibrating portion has a through hole therethrough, and the plate wall completely covers the through opening.
9. The sounder device according to claim 7, wherein a top surface of the magnetic circuit system is higher than the vibrating portion in the vibration direction, and a position of a maximum amplitude of the vibrating portion is lower than or parallel to the top surface of the magnetic circuit system.
10. The sounder device according to claim 5, wherein the vibration system further comprises an auxiliary diaphragm secured on one side to the outer wall and on another side to an end of the first extension wall remote from the flat plate wall.
CN201911320227.3A 2019-11-21 2019-12-19 Sound production device Active CN111405422B (en)

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CN2019111495640 2019-11-21

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CN201911322205.0A Active CN111372177B (en) 2019-11-21 2019-12-20 Loudspeaker
CN201911322214.XA Active CN111405423B (en) 2019-11-21 2019-12-20 Loudspeaker

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CN112533109A (en) * 2020-12-18 2021-03-19 瑞声新能源发展(常州)有限公司科教城分公司 Sound production device
CN114630249A (en) * 2022-04-26 2022-06-14 歌尔股份有限公司 Sound production module and electronic equipment
US11930341B2 (en) * 2022-01-25 2024-03-12 Aac Microtech (Changzhou) Co., Ltd. Coaxial speaker

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WO2021127925A1 (en) * 2019-12-23 2021-07-01 瑞声声学科技(深圳)有限公司 Loudspeaker
CN213462308U (en) * 2020-07-06 2021-06-15 瑞声科技(新加坡)有限公司 Loudspeaker
CN213462306U (en) * 2020-07-06 2021-06-15 瑞声科技(新加坡)有限公司 Loudspeaker
CN212785822U (en) * 2020-07-06 2021-03-23 瑞声科技(新加坡)有限公司 Sounding device
CN213462304U (en) * 2020-07-06 2021-06-15 瑞声科技(新加坡)有限公司 Loudspeaker
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