CN111641907A - Sound production device - Google Patents
Sound production device Download PDFInfo
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- CN111641907A CN111641907A CN202010588049.9A CN202010588049A CN111641907A CN 111641907 A CN111641907 A CN 111641907A CN 202010588049 A CN202010588049 A CN 202010588049A CN 111641907 A CN111641907 A CN 111641907A
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- yoke
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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
- H04R9/02—Details
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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
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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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
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
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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
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a sounding device which comprises a vibration system and a magnetic circuit system, wherein the vibration system comprises an upper vibrating diaphragm, a voice coil, a lower vibrating diaphragm and a framework, the magnetic circuit system comprises a magnetic yoke and first magnetic steel, the magnetic yoke comprises a magnetic yoke body and a magnetic yoke supporting table which is protruded and extended from the magnetic yoke body, the first magnetic steel is fixed on the magnetic yoke body, the voice coil is arranged on the outer side of the first magnetic steel in a surrounding manner, and the magnetic yoke supporting table is arranged on the inner side of the first magnetic steel; the skeleton is including the skeleton body that is fixed in the vibrating diaphragm, the inner frame that is buckled and extends by the skeleton body and buckle and extend and the skeleton extension of being connected with the voice coil loudspeaker voice coil by the skeleton body, and the inner frame extends to the inboard of first magnet steel, and lower vibrating diaphragm sets up in the inboard of first magnet steel and connects between inner frame and a yoke brace table. Compared with the related art, the sounding device provided by the invention has good stability and excellent acoustic performance.
Description
[ 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 ]
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 and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the basin frame; vibration system is including being fixed in the last vibrating diaphragm of basin frame, being fixed in go up the vibrating diaphragm and insert and locate the magnetic gap is in order to drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, with go up the relative lower vibrating diaphragm that sets up of vibrating diaphragm and connect respectively go up the vibrating diaphragm with the skeleton of lower vibrating diaphragm, the one end of lower vibrating diaphragm is fixed in the basin frame, the other end is fixed in the voice coil loudspeaker voice coil is kept away from the lower vibrating diaphragm of vibrating diaphragm one end.
However, in the sound generating device in the related art, the lower diaphragm is fixed to two opposite ends of the voice coil, and although the lower diaphragm can effectively prevent the voice coil from swinging laterally when vibrating, the space between the frame and the voice coil is small, which results in poor stability of the voice coil, and the volume of the magnetic circuit system is also limited, so that the acoustic improvement of the sound generating device is limited.
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 sounding device with good stability and excellent acoustic performance.
In order to achieve the above object, the present invention provides a sound generating device, which includes a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound, wherein the vibration system includes an upper vibrating diaphragm for vibrating and generating sound, a voice coil for driving the upper vibrating diaphragm to vibrate and generate sound, a lower vibrating diaphragm arranged opposite to the upper vibrating diaphragm at an interval, and a framework arranged between the upper vibrating diaphragm and the lower vibrating diaphragm, the magnetic circuit system includes a magnetic yoke arranged opposite to the upper vibrating diaphragm at an interval and a first magnetic steel fixed on the magnetic yoke, the magnetic yoke includes a magnetic yoke body and a magnetic yoke support platform extending from the magnetic yoke body to the upper vibrating diaphragm in a protruding manner, the first magnetic steel is fixed on the magnetic yoke body, the voice coil is arranged around the outer side of the first magnetic steel, and the magnetic yoke is arranged inside the first magnetic steel support platform; the framework comprises a framework body fixed on the upper vibrating diaphragm, an inner framework bent and extended from the framework body to the magnetic yoke, and a framework extension part bent and extended from the framework body to the voice coil and connected with the voice coil, and the inner framework extends to the inner side of the first magnetic steel; the lower vibrating diaphragm is arranged on the inner side of the first magnetic steel and connected between the inner framework and the magnetic yoke supporting platform.
Preferably, the magnetic circuit system further comprises a second magnetic steel fixed to the magnetic yoke body, the second magnetic steel is arranged outside the first magnetic steel and forms a magnetic gap with the first magnetic steel at an interval, and the voice coil is inserted into the magnetic gap.
Preferably, the framework body is annular, the inner framework comprises an inner framework body bent and extended from the inner periphery of the framework body and an inner framework fixing part bent and extended from the inner framework body to a direction close to the magnetic yoke support table, and the inner framework fixing part is connected with the lower vibrating diaphragm; the framework extension part is formed by bending and extending the outer periphery of the framework body.
Preferably, the framework extension part comprises a framework extension part body which is bent and extended by the framework body and a framework extension fixing part which is bent and extended towards the far away direction of the inner framework, and the framework extension fixing part is close to the voice coil and is fixedly connected with one end of the upper vibrating diaphragm.
Preferably, the bobbin further comprises an outer bobbin bent and extended towards the direction of the magnetic yoke from one end of the bobbin extending fixing part, which is far away from the bobbin extending part body, and the outer bobbin is arranged outside the voice coil; the sounding device further comprises a basin frame used for supporting the vibration system and the magnetic circuit system and an elastic piece arranged on the outer side of the voice coil, one end of the elastic piece is fixed on the outer framework, and the other end of the elastic piece is fixed on the basin frame.
Preferably, the outer frame includes by the skeleton extend fixed part buckle extend set up in the outer frame body in the outside of voice coil loudspeaker voice coil and by the outer frame body is kept away from the one end that the skeleton extended fixed part is to keeping away from the outer frame fixed part that the voice coil loudspeaker voice coil direction is buckled and is extended, the elastic component is fixed in the outer frame fixed part.
Preferably, the voice coil comprises a voice coil body and a voice coil lead extending from the voice coil body; the elastic piece is a flexible circuit board, the outer framework is provided with a lead hole penetrating through the outer framework, and the voice coil lead penetrates through the lead hole and is electrically connected with the elastic piece.
Preferably, the voice coil further comprises an avoiding step formed by the fact that the voice coil body is far away from one end of the upper vibrating diaphragm and close to the periphery of the outer framework, and the voice coil lead is led out from the avoiding step.
Preferably, the first magnetic steel is a hollow rectangle, the second magnetic steel comprises two magnetic steels which are respectively arranged at two opposite sides of the long axis of the first magnetic steel, the magnetic circuit system also comprises a first clamping plate which is overlapped on the first magnetic steel and is in a hollow ring shape, a second clamping plate which is overlapped on the second magnetic steel and an auxiliary magnetic steel which is overlapped on the second clamping plate, the second clamping plate comprises two first bodies fixed on the second magnetic steel, clamping plate extending bodies which are respectively bent and extended from the two opposite ends of the first bodies towards the direction close to the upper vibrating diaphragm, and a second body connected between the clamping plate extending bodies on the adjacent side, the clamping plate extending body is connected between the adjacent first body and the second body respectively, the first body, the clamping plate extending body and the second body are encircled into a ring shape together, and the second body is closer to the upper vibrating diaphragm than the first body.
Preferably, the sound production device further comprises a damping part, an inner sound cavity is defined by the damping part, the basin frame, the upper vibrating diaphragm and the magnet yoke, and the inner sound cavity is communicated with the outside through the damping part; damping spare is including being fixed in the damping spare body of yoke, by the damping spare body to the direction of basin frame is buckled the damping spare extension that extends and by the damping spare extension is buckled and is extended and be fixed in the damping spare connecting portion of basin frame, the yoke still include by the yoke body is to keeping away from the yoke extension that the direction of yoke brace table extends, the damping spare body is fixed in the yoke extension is kept away from go up one side of vibrating diaphragm.
Compared with the prior art, the sounder provided by the invention has the advantages that the magnetic yoke of the magnetic circuit system is provided with the magnetic yoke body and the magnetic yoke support platform protruding from the magnetic yoke body in the direction of the upper vibrating diaphragm, the first magnetic steel is fixed on the magnetic yoke body, the magnetic yoke support platform is arranged on the inner side of the first magnetic steel, the voice coil is arranged on the outer side of the first magnetic steel in a surrounding manner, the framework body of the framework respectively extends out of the inner framework and the framework extension part, the inner framework extends to the inner side of the first magnetic steel, and the lower vibrating diaphragm is arranged on the inner side of the first magnetic steel and is connected between the inner. Compared with the technical scheme that the lower vibrating diaphragm is arranged in the space between the basin frame and the voice coil in the related art, the lower vibrating diaphragm is arranged on the inner side of the first magnetic steel, and the space enclosed by the inner side of the first magnetic steel is large, so that the lower vibrating diaphragm accommodated in the space can be designed to be large, the transverse swinging effect of the voice coil during vibration is good, and the stability of the sound production device is good. In addition, the structure enables a magnetic gap formed by the first magnetic steel and the second magnetic steel at intervals to be larger on one hand, and eliminates the influence of the lower vibrating diaphragm on the magnetic gap on the other hand, so that the limitation on the design of a magnetic circuit system is eliminated, the magnetic circuit is better, and the acoustic performance of the sound production device is effectively improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a sound device according to the present invention;
FIG. 2 is an exploded perspective view of a sound device according to the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is an enlarged view of the portion indicated by C in FIG. 3;
FIG. 5 is a sectional view taken along line B-B of FIG. 1;
FIG. 6 is a cross-sectional view of another embodiment of the sound device of FIG. 5;
fig. 7 is a schematic perspective view of the lower diaphragm of the sound production device of the present invention;
FIG. 8 is a schematic perspective view of the voice coil of the sound device of the present invention;
FIG. 9 is a schematic perspective view of a skeleton of a sound device according to the present invention;
fig. 10 is schematic structural diagrams of four embodiments of the first magnetic steel of the sound production device in fig. 3.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a sound generating device 100, which includes a vibration system 2, a magnetic circuit system 3 and a damping element 4, wherein the magnetic circuit system 3 drives the vibration system 2 to vibrate and generate sound. The magnetic circuit 3 is embodied with a magnetic gap 30.
In this embodiment, the sounder device 100 further includes a frame 1 for supporting the vibration system 2 and the magnetic circuit system 3, respectively.
The vibration system 2 comprises an upper vibrating diaphragm 21 for vibrating and sounding, a lower vibrating diaphragm 22 arranged opposite to the upper vibrating diaphragm 21 at an interval, and a voice coil 23 inserted in the magnetic gap 30 to drive the upper vibrating diaphragm 21 to vibrate and sound. In this embodiment, the vibration system 2 is fixed to the frame 1. Specifically, the upper diaphragm 21 is fixed to the frame 1.
In this embodiment, the magnetic circuit system 3 includes a magnetic yoke 31 fixed to the frame 1 and disposed opposite to the upper diaphragm 21 at an interval, and a first magnetic steel 32 and a second magnetic steel 33 fixed to the magnetic yoke 31, respectively, where the second magnetic steel 33 and the first magnetic steel 32 form the magnetic gap 30 at an interval.
The yoke 31 includes a yoke body 311 and a yoke support 312 formed by the yoke body 311 extending in a direction of the upper diaphragm 21. In this embodiment, the magnetic yoke body 311 is fixed to the frame 1 and is spaced apart from and opposite to the upper diaphragm 21. The yoke support 312 is disposed at a middle position of the yoke body 311. The first magnetic steel 32 and the second magnetic steel 33 are respectively fixed to the yoke body 311, and the second magnetic steel 33 is disposed outside the first magnetic steel 32 and spaced from the first magnetic steel 32 to form the magnetic gap 30. The voice coil 23 is disposed around the outer side of the first magnetic steel 32, and the voice coil 23 is inserted into the magnetic gap 30. The magnetic yoke support platform 312 is disposed inside the first magnetic steel 32, and this structure enables a space to be formed between the first magnetic steel 32 and the magnetic yoke support platform 312, so that on one hand, the first magnetic steel 32 is surrounded into an annular structure, which is beneficial to increase the space of the magnetic gap 30 of the magnetic circuit system 3, and improves the acoustic performance of the sound generating device 100.
In order to simultaneously drive the upper diaphragm 21 and the lower diaphragm 22 to vibrate, the vibration system 2 further includes a skeleton 24 connected to the upper diaphragm 21 and the lower diaphragm 22.
Specifically, the bobbin 24 includes a bobbin body 241 fixed to the upper diaphragm 21, an inner bobbin 242 bent and extended from the bobbin body 241 to the magnetic yoke 31, and a bobbin extension 243 bent and extended from the bobbin body 241 toward the voice coil 23 and connected to the voice coil 23.
In this embodiment, the upper diaphragm 21 includes an upper fixing portion 211 fixed on the frame 1, an upper ring-folding portion 212 bent and extended to be annular at the periphery of the upper fixing portion 211, an upper vibrating portion 213 bent and extended to a direction away from the upper fixing portion 211 and a dome 214 attached and fixed to the upper vibrating portion 213, the upper vibrating portion 213 is provided with a through hole 210 penetrating through the upper vibrating portion, the dome 214 is attached and covered on the through hole 210, and the frame body 241 is fixed on the dome 214.
The inner frame 242 extends to the inner side of the first magnetic steel 32. The lower diaphragm 22 is disposed inside the first magnetic steel 32 and connected between the inner frame 242 and the yoke support 312.
Referring to fig. 5, in the present embodiment, the lower diaphragm 22 is annular. The lower diaphragm 22 is disposed inside the first magnetic steel 32 and spaced apart from the yoke body 311. The outer side of the lower diaphragm 22 is fixed to one end of the inner frame 242 away from the upper diaphragm 21, and the inner side of the lower diaphragm 22 is fixed to the yoke support 312. Above-mentioned structure makes voice coil 23 drive skeleton 24 is in order to drive go up vibrating diaphragm 21 with vibrating diaphragm 22 vibrates simultaneously down, promptly voice coil 23 drives simultaneously skeleton body 241 with inner frame 242 is in order to drive go up vibrating diaphragm 21 with vibrating diaphragm 22 vibrates simultaneously down, realizes two vibrating diaphragm vibration sound production structures. Preferably, compared with the lower vibrating diaphragm 22 of the related art, which is arranged in the space between the frame 1 and the voice coil 23, the lower vibrating diaphragm 22 is arranged in the space surrounded by the first magnetic steel 32, so that the lower vibrating diaphragm 22 can be designed to be relatively large, the transverse swinging effect of the voice coil 23 during vibration is good, and the stability of the sound generating device 100 is good.
Of course, without limitation, the lower diaphragm 22 may be fixed to the yoke support 312 and the inner frame 242 in various ways. Referring to fig. 6, fig. 6 is another embodiment of fig. 5 and provides a sounding device 100 a. This embodiment differs from the embodiment of fig. 5 in that: the yoke support 312a is annular and is disposed inside the first magnetic steel 32 a. The inner side of the lower diaphragm 22a is fixed to an end of the inner frame 242a away from the upper diaphragm 21a, and the outer side of the lower diaphragm 22a is fixed to the yoke support 312 a. This structure also allows the lower diaphragm 22a to be designed to be relatively large, and the lateral swing effect of the voice coil 23a when vibrating is good, so that the sound generating device 100a has good stability.
In the present embodiment, the frame body 241 has a ring shape. The inner frame 242 includes an inner frame body 2421 bent and extended from an inner peripheral edge of the frame body 241, and an inner frame fixing part 2422 bent and extended from the inner frame body 2421 in a direction approaching the yoke support table 312. The inner frame fixing part 2422 is connected to the lower diaphragm 22. The inner frame body 2421 is disposed on the inner side of the first magnetic steel 32. Specifically, the inner frame fixing part 2422 is fixed to the lower diaphragm 22, and the inner frame fixing part 2422 is disposed on the inner frame 242 to increase a bonding area, so as to increase a connection strength between the inner frame fixing part 2422 and the lower diaphragm 22, and improve vibration reliability.
In this embodiment, the lower diaphragm 22 includes a first lower fixing portion 221 fixed to the yoke support 312, an annular folded-down ring portion 222 bent and extended from an outer peripheral edge of the first lower fixing portion 221, and an annular second lower fixing portion 223 extended from an outer peripheral edge of the folded-down ring portion 222 toward the first magnetic steel 32. The folded-down ring portion 222 and the second lower fixing portion 223 are both disposed at an interval with the yoke body 311, the inner frame fixing portion 2422 is fixed to the second lower fixing portion 223, and the lower diaphragm 22 of this structure is respectively fixed to the yoke support table 312 and the inner frame fixing portion 242 through the first lower fixing portion 221 and the second lower fixing portion 223, so that the space surrounded by the first magnetic steel 32 is fully utilized by the lower diaphragm 22, and the lower diaphragm 22 can be designed to be relatively large.
The frame extension 243 is formed by bending and extending the frame body 241. The frame extension portion 243 includes a frame extension portion body 2431 bent and extended from the frame body 241 and a frame extension fixing portion 2432 bent and extended from the frame extension portion body 2431 toward a direction away from the inner frame 242. The bobbin extension fixing portion 2432 is fixedly connected to one end of the voice coil 23 close to the upper diaphragm 21. The framework extension fixing part 2432 is disposed on the framework extension part 243 to increase the bonding area, so as to increase the connection strength between the framework extension fixing part 2432 and the upper diaphragm 21, and improve the vibration reliability.
In this embodiment, the frame 24 further includes an outer frame 244 extending from one end of the frame extension fixing part 2432 away from the frame extension part body 2431 to the direction of the magnetic yoke 31. The outer bobbin 244 is disposed outside the voice coil 23. Specifically, the outer bobbin 244 includes an outer bobbin body 2441 disposed outside the voice coil 23 and bent and extended from the bobbin extension fixing portion 2432, and an outer bobbin fixing portion 2442 bent and extended from an end of the outer bobbin body 2441 far away from the bobbin extension fixing portion 2432 to a direction far away from the voice coil 23. Providing the exoskeleton fixing part 2442 on the exoskeleton 244 increases a coupling area.
In this embodiment, the sound producing device further comprises an elastic member 25. The elastic member 25 is disposed outside the voice coil 23. The elastic member 25 is opposite to the upper diaphragm 21 and spaced apart from the upper diaphragm. Specifically, the elastic element 25 includes two elastic elements respectively located on two opposite sides of the short axis of the first magnetic steel 32. The elastic member 25 having a symmetrical structure is advantageous in suppressing the wobbling of the voice coil 23 and in making the voice coil 23 well balanced.
One end of the elastic member 25 is fixed to the outer frame 244, and the other end of the elastic member 25 is fixed to the frame 1. Specifically, the elastic member 25 is fixed to the exoskeleton fixing part 2442. This structure is beneficial to the outer frame 244 being supported and fixed on the frame 1 through the elastic member 25, so as to better support the upper diaphragm 21 and make the vibration of the upper diaphragm 21 better. Meanwhile, the outer frame 244 and the inner frame 242 are respectively disposed at two opposite sides of the first magnetic steel 32, so that the frame 24 has an optimal ability to suppress the swing of the upper diaphragm 21, and the acoustic performance of the sound generating device 100 is better.
Specifically, the elastic member 25 includes a first fixing arm 251 fixed to the frame 1, a second fixing arm 252 spaced apart from the first fixing arm 251, and an elastic arm 253 connecting the first fixing arm 251 and the second fixing arm 252, and the first fixing arm 251 is fixed to the frame 1. The outer frame fixing portion 2442 is connected to the second fixing arm 252, and the structure of the elastic member 25 is favorable for the outer frame fixing portion 2442 to suppress the swing of the upper diaphragm 21.
In order to better match the structure of the elastic member 25 connected to the outer bobbin fixing portion 2442, in this embodiment, the voice coil 23 includes a voice coil body 231, an avoiding step 232 formed by a recess of a peripheral edge of the voice coil body 231, which is close to the outer bobbin 244, at an end of the voice coil body 231 away from the upper diaphragm 21, and a voice coil lead 233 extended from the voice coil body 231. The structure of the escape step 232 is advantageous to high reliability when the elastic member 25 vibrates.
In the present embodiment, the elastic member 25 is a flexible circuit board, and the outer frame 244 has a lead hole 2440 penetrating therethrough. The voice coil lead 233 is used for electrical connection and receiving an external signal, and the voice coil lead 233 passes through the lead hole 2440 and is electrically connected with the elastic member 25. Specifically, the voice coil lead 233 is led out from the avoiding step 232. On one hand, the vibration system is used for improving the vibration strength and balance of the vibration system 2 and inhibiting swing, and on the other hand, the voice coil 23 is led out to be connected with an external power supply, so that the risk that the lead of the voice coil is easy to break when the lead structure of the voice coil is led out of the power supply is avoided.
In this embodiment, the sound generating device further includes a damping member 4, and the damping member 4, the basin frame 1, the upper diaphragm 21 and the magnetic yoke 31 together enclose an inner sound cavity 10. The inner acoustic chamber 10 communicates with the outside through the damping member 4. Specifically, the damping member 4 includes a damping member body 41 fixed to the yoke 31, a damping member extension portion 42 bent and extended from the damping member body 41 in a direction toward the frame 1, and a damping member connection portion 43 bent and extended from the damping member extension portion 42 and fixed to the frame 1. The yoke 31 further includes a yoke extension 313 extending from the yoke body 311 in a direction away from the yoke support 312, and the damper body 41 is fixed to a side of the yoke extension 313 away from the upper diaphragm 21. The damping member 4 is equivalent to a step structure, and the structure enables the magnetic yoke 31, the damping member body 41 and the damping member extension portion 42 to form a magnetic bowl leakage structure, so that the application of the sound generating device 100 is effectively enlarged, and simultaneously, impurities such as external dust are prevented from entering the inner sound cavity 10, thereby improving the reliability of the sound generating device 100.
In this embodiment, the frame 1 includes a frame side wall 11 and a frame leg 12 formed by extending the frame side wall 11 toward the yoke body 311, and the frame leg 12 abuts against and is fixed to the yoke body 311. The structure enables the assembly of the basin frame 1 and the magnet yoke 31 to be simpler, and is beneficial to the assembly of the sound production device 100, so that the process is simple, and on the other hand, the structure is fixed through the connection of the basin frame support legs 12, does not occupy the space of the magnetic circuit system 33, ensures the utilization rate of the internal space, and enables the sound production device 100 to have good acoustic performance.
In the present embodiment, the first magnetic steel 32 has a ring shape. Referring to fig. 10, in the present embodiment, as shown in fig. 10(a), the first magnetic steel 32 has a hollow rectangular shape. Of course, the shape of the first magnetic steel 32 may be in various annular shapes. In another embodiment, as shown in fig. 10(b), a break 320b is provided in the first magnetic steel 32b, wherein the first magnetic steel 32b has a hollow rectangular shape or a hollow circular ring shape. In another embodiment, as shown in fig. 10(c), the first magnetic steels 32c include two first magnetic steels 32c, and the two first magnetic steels 32c are disposed opposite to each other at intervals. In another embodiment, as shown in fig. 10(d), the first magnetic steels 32d include four first magnetic steels 32d, two first magnetic steels 32d are disposed on opposite sides of the long axis of the sound generating device, and the other two first magnetic steels 32d are disposed on opposite sides of the short axis of the sound generating device.
In this embodiment, the second magnetic steels 33 include two second magnetic steels and are disposed at intervals on two opposite sides of the long axis of the first magnetic steel 32. The magnetic circuit system 3 further includes a first annular clamping plate 34 stacked on the first magnetic steel 32, a second annular clamping plate 35 stacked on the second magnetic steel 33, and an auxiliary magnetic steel 36 stacked on the second annular clamping plate 35. The auxiliary magnetic steel 36 can keep the structural volume of the magnetic circuit system 3 maximized to the greatest extent, so as to keep the magnetic field intensity.
The second clamping plate 35 includes two first bodies 351 fixed to the second magnetic steel 33, clamping plate extensions 352 bent and extended from opposite ends of the first bodies 351 toward a direction close to the upper diaphragm 21, and a second body 353 connected between the clamping plate extensions 352 on an adjacent side. The clamping plate extension 352 is respectively connected between the adjacent first body 351 and the second body 353, the first body 351, the clamping plate extension 352 and the second body 353 jointly enclose a ring shape, and the second body 353 is closer to the upper diaphragm 21 than the first body 351, so as to form a space for accommodating the elastic member 25. The structure makes full use of the space between the second clamping plate 35 and the upper vibrating diaphragm 21, effectively improves the magnetic field strength of the magnetic circuit system, and improves the magnetic driving force and symmetry of the magnetic circuit system, thereby enhancing the acoustic performance and reliability of the sound production device 100.
Compared with the prior art, the sounder provided by the invention has the advantages that the magnetic yoke of the magnetic circuit system is provided with the magnetic yoke body and the magnetic yoke support platform protruding from the magnetic yoke body in the direction of the upper vibrating diaphragm, the first magnetic steel is fixed on the magnetic yoke body, the magnetic yoke support platform is arranged on the inner side of the first magnetic steel, the voice coil is arranged on the outer side of the first magnetic steel in a surrounding manner, the framework body of the framework respectively extends out of the inner framework and the framework extension part, the inner framework extends to the inner side of the first magnetic steel, and the lower vibrating diaphragm is arranged on the inner side of the first magnetic steel and is connected between the inner. Compared with the technical scheme that the lower vibrating diaphragm is arranged in the space between the basin frame and the voice coil in the related art, the lower vibrating diaphragm is arranged on the inner side of the first magnetic steel, and the space enclosed by the inner side of the first magnetic steel is large, so that the lower vibrating diaphragm accommodated in the space can be designed to be large, the transverse swinging effect of the voice coil during vibration is good, and the stability of the sound production device is good. In addition, the structure enables a magnetic gap formed by the first magnetic steel and the second magnetic steel at intervals to be larger on one hand, and eliminates the influence of the lower vibrating diaphragm on the magnetic gap on the other hand, so that the limitation on the design of a magnetic circuit system is eliminated, the magnetic circuit is better, and the acoustic performance of the sound production device 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 invention.
Claims (10)
1. A sounding device comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound, wherein the vibration system comprises an upper vibrating diaphragm for vibrating and sound, a voice coil for driving the upper vibrating diaphragm to vibrate and sound, a lower vibrating diaphragm arranged opposite to the upper vibrating diaphragm at an interval, and a framework arranged between the upper vibrating diaphragm and the lower vibrating diaphragm, the magnetic circuit system comprises a magnetic yoke arranged opposite to the upper vibrating diaphragm at an interval and a first magnetic steel fixed on the magnetic yoke, and the sounding device is characterized in that the magnetic yoke comprises a magnetic yoke body and a magnetic yoke support platform which is extended from the magnetic yoke body to the upper vibrating diaphragm in a protruding manner, the first magnetic steel is fixed on the magnetic yoke body, the voice coil is arranged on the outer side of the first magnetic steel in a surrounding manner, and the magnetic yoke support platform is arranged on the inner side of; the framework comprises a framework body fixed on the upper vibrating diaphragm, an inner framework bent and extended from the framework body to the magnetic yoke, and a framework extension part bent and extended from the framework body to the voice coil and connected with the voice coil, and the inner framework extends to the inner side of the first magnetic steel; the lower vibrating diaphragm is arranged on the inner side of the first magnetic steel and connected between the inner framework and the magnetic yoke supporting platform.
2. The sounding device according to claim 1, wherein the magnetic circuit system further comprises a second magnetic steel fixed to the yoke body, the second magnetic steel is disposed outside the first magnetic steel and spaced from the first magnetic steel to form a magnetic gap, and the voice coil is inserted into the magnetic gap.
3. The sounding device according to claim 1, wherein the frame body is annular, the inner frame includes an inner frame body extending from an inner periphery of the frame body and an inner frame fixing portion extending from the inner frame body in a direction close to the yoke support platform, and the inner frame fixing portion is connected to the lower diaphragm; the framework extension part is formed by bending and extending the outer periphery of the framework body.
4. The sounding device according to claim 1, wherein the bobbin extension portion comprises a bobbin extension portion body bent and extended from the bobbin extension portion body and a bobbin extension fixing portion bent and extended from the bobbin extension portion body toward a direction away from the inner bobbin, and the bobbin extension fixing portion is fixedly connected to an end of the voice coil near the upper diaphragm.
5. The sounding device according to claim 4, wherein the bobbin further comprises an outer bobbin extending from one end of the bobbin extending fixing portion away from the bobbin extending portion body to bend and extend towards the magnetic yoke, and the outer bobbin is disposed outside the voice coil; the sounding device further comprises a basin frame used for supporting the vibration system and the magnetic circuit system and an elastic piece arranged on the outer side of the voice coil, one end of the elastic piece is fixed on the outer framework, and the other end of the elastic piece is fixed on the basin frame.
6. The sounding device according to claim 5, wherein the outer frame includes an outer frame body disposed outside the voice coil and extending from the frame extension fixing portion, and an outer frame fixing portion extending from an end of the outer frame body away from the frame extension fixing portion to the direction away from the voice coil, and the elastic member is fixed to the outer frame fixing portion.
7. The sounder device according to claim 5, wherein the voice coil comprises a voice coil body and voice coil leads extending from the voice coil body; the elastic piece is a flexible circuit board, the outer framework is provided with a lead hole penetrating through the outer framework, and the voice coil lead penetrates through the lead hole and is electrically connected with the elastic piece.
8. The sounding device according to claim 7, wherein the voice coil further comprises a relief step formed by a recess on a periphery of the voice coil body, which is close to the outer frame, at an end of the voice coil body, which is far from the upper diaphragm, and the voice coil lead is led out from the relief step.
9. The sounding device according to claim 2, wherein the first magnetic steel is a hollow rectangle, the second magnetic steel comprises two hollow annular first clamping plates stacked on the first magnetic steel, a second clamping plate stacked on the second magnetic steel, and an auxiliary magnetic steel stacked on the second clamping plate, the second clamping plate comprises two first bodies fixed on the second magnetic steel, clamping plate extending bodies bent and extending from two opposite ends of the first bodies toward the direction close to the upper diaphragm, and a second body connected between the clamping plate extending bodies on adjacent sides, the clamping plate extending bodies are connected between the adjacent first bodies and the second bodies, the first bodies, the clamping plate extending bodies, and the second bodies together form an annular shape, the second body is closer to the upper diaphragm than the first body.
10. The sounding device according to claim 5, further comprising a damping member, wherein the damping member, the basin frame, the upper diaphragm and the magnetic yoke together enclose an inner acoustic cavity, and the inner acoustic cavity is communicated with the outside through the damping member; damping spare is including being fixed in the damping spare body of yoke, by the damping spare body to the direction of basin frame is buckled the damping spare extension that extends and by the damping spare extension is buckled and is extended and be fixed in the damping spare connecting portion of basin frame, the yoke still include by the yoke body is to keeping away from the yoke extension that the direction of yoke brace table extends, the damping spare body is fixed in the yoke extension is kept away from go up one side of vibrating diaphragm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010588049.9A CN111641907B (en) | 2020-06-24 | 2020-06-24 | Sound production device |
| PCT/CN2020/102771 WO2021258439A1 (en) | 2020-06-24 | 2020-07-17 | Sound generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010588049.9A CN111641907B (en) | 2020-06-24 | 2020-06-24 | Sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111641907A true CN111641907A (en) | 2020-09-08 |
| CN111641907B CN111641907B (en) | 2021-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010588049.9A Expired - Fee Related CN111641907B (en) | 2020-06-24 | 2020-06-24 | Sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111641907B (en) |
| WO (1) | WO2021258439A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468939A (en) * | 2020-12-18 | 2021-03-09 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112492469A (en) * | 2020-12-25 | 2021-03-12 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| WO2022067973A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound-producing device |
| CN114363778A (en) * | 2021-12-31 | 2022-04-15 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN114501260A (en) * | 2021-07-23 | 2022-05-13 | 荣耀终端有限公司 | Kernel, loudspeaker module and electronic equipment |
| WO2022110373A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2024000665A1 (en) * | 2022-06-28 | 2024-01-04 | 张永春 | Loudspeaker |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443021A (en) * | 2002-03-01 | 2003-09-17 | 阿尔卑斯电气株式会社 | Audio equipment |
| US20040013283A1 (en) * | 2002-07-16 | 2004-01-22 | Coffin C. Ronald | Repairable electromagnetic linear motor for loudspeakers and the like |
| WO2004110097A1 (en) * | 2003-06-06 | 2004-12-16 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker, manufacturing method thereof, and mobile telephone using the same |
| CN202035134U (en) * | 2011-03-15 | 2011-11-09 | 张志中 | Loudspeaker with double suspended fringes |
| US8428295B2 (en) * | 2010-07-09 | 2013-04-23 | Aperion Audio, Inc. | Loudspeaker that is axially stabilized out of the diaphragm suspension plane |
| CN108566606A (en) * | 2018-06-25 | 2018-09-21 | 歌尔股份有限公司 | Microphone device and portable terminal |
| CN208874732U (en) * | 2018-09-05 | 2019-05-17 | 捷音特科技股份有限公司 | Multitone ring loudspeaker |
| CN109769183A (en) * | 2019-03-08 | 2019-05-17 | 歌尔股份有限公司 | Loudspeaker |
| CN209390359U (en) * | 2018-12-31 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | Earphone core |
| CN110267169A (en) * | 2019-06-11 | 2019-09-20 | 瑞声科技(新加坡)有限公司 | A kind of loudspeaker |
| CN210093501U (en) * | 2019-06-29 | 2020-02-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| US20200107112A1 (en) * | 2018-09-28 | 2020-04-02 | Tymphany Acoustic Technology (Huizhou) Co., Ltd. | Single-magnet double-tone-circuit coaxial loudspeaker |
| CN111131977A (en) * | 2020-03-05 | 2020-05-08 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN210641017U (en) * | 2019-10-11 | 2020-05-29 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111327998A (en) * | 2020-02-25 | 2020-06-23 | 瑞声科技(新加坡)有限公司 | Sound production device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209375908U (en) * | 2018-12-30 | 2019-09-10 | 瑞声声学科技(深圳)有限公司 | Microphone device |
| CN109862484B (en) * | 2018-12-30 | 2021-10-01 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN209448889U (en) * | 2018-12-30 | 2019-09-27 | 瑞声声学科技(深圳)有限公司 | Microphone device |
-
2020
- 2020-06-24 CN CN202010588049.9A patent/CN111641907B/en not_active Expired - Fee Related
- 2020-07-17 WO PCT/CN2020/102771 patent/WO2021258439A1/en active Application Filing
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443021A (en) * | 2002-03-01 | 2003-09-17 | 阿尔卑斯电气株式会社 | Audio equipment |
| US20040013283A1 (en) * | 2002-07-16 | 2004-01-22 | Coffin C. Ronald | Repairable electromagnetic linear motor for loudspeakers and the like |
| WO2004110097A1 (en) * | 2003-06-06 | 2004-12-16 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker, manufacturing method thereof, and mobile telephone using the same |
| US8428295B2 (en) * | 2010-07-09 | 2013-04-23 | Aperion Audio, Inc. | Loudspeaker that is axially stabilized out of the diaphragm suspension plane |
| CN202035134U (en) * | 2011-03-15 | 2011-11-09 | 张志中 | Loudspeaker with double suspended fringes |
| CN108566606A (en) * | 2018-06-25 | 2018-09-21 | 歌尔股份有限公司 | Microphone device and portable terminal |
| CN208874732U (en) * | 2018-09-05 | 2019-05-17 | 捷音特科技股份有限公司 | Multitone ring loudspeaker |
| US20200107112A1 (en) * | 2018-09-28 | 2020-04-02 | Tymphany Acoustic Technology (Huizhou) Co., Ltd. | Single-magnet double-tone-circuit coaxial loudspeaker |
| CN209390359U (en) * | 2018-12-31 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | Earphone core |
| CN109769183A (en) * | 2019-03-08 | 2019-05-17 | 歌尔股份有限公司 | Loudspeaker |
| CN110267169A (en) * | 2019-06-11 | 2019-09-20 | 瑞声科技(新加坡)有限公司 | A kind of loudspeaker |
| CN210093501U (en) * | 2019-06-29 | 2020-02-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN210641017U (en) * | 2019-10-11 | 2020-05-29 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111327998A (en) * | 2020-02-25 | 2020-06-23 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111131977A (en) * | 2020-03-05 | 2020-05-08 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022067973A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound-producing device |
| WO2022110373A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| CN112468939A (en) * | 2020-12-18 | 2021-03-09 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112468939B (en) * | 2020-12-18 | 2022-06-03 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112492469A (en) * | 2020-12-25 | 2021-03-12 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN114501260A (en) * | 2021-07-23 | 2022-05-13 | 荣耀终端有限公司 | Kernel, loudspeaker module and electronic equipment |
| CN114501260B (en) * | 2021-07-23 | 2024-04-12 | 北京荣耀终端有限公司 | Kernel, loudspeaker module and electronic equipment |
| CN114363778A (en) * | 2021-12-31 | 2022-04-15 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN114363778B (en) * | 2021-12-31 | 2023-12-22 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
| WO2024000665A1 (en) * | 2022-06-28 | 2024-01-04 | 张永春 | Loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021258439A1 (en) | 2021-12-30 |
| CN111641907B (en) | 2021-07-09 |
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