CN117082418A - Sounding device - Google Patents
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- CN117082418A CN117082418A CN202311331832.7A CN202311331832A CN117082418A CN 117082418 A CN117082418 A CN 117082418A CN 202311331832 A CN202311331832 A CN 202311331832A CN 117082418 A CN117082418 A CN 117082418A
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- 229910000831 Steel Inorganic materials 0.000 claims description 234
- 239000010959 steel Substances 0.000 claims description 234
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 101150114468 TUB1 gene Proteins 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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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- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The application relates to the field of electroacoustic conversion, and provides a sound generating device which 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; the vibration system comprises a vibrating diaphragm, a first voice coil, a second voice coil and a third voice coil, wherein the first voice coil, the second voice coil and the third voice coil are arranged at intervals and drive the vibrating diaphragm to vibrate; the vibrating diaphragm comprises a first folding ring, a second folding ring and a vibrating part; the magnetic circuit system is provided with a first magnetic gap, a second magnetic gap and a third magnetic gap which are mutually spaced; the first voice coil is inserted and arranged in the first magnetic gap, the second voice coil is inserted and arranged in the second magnetic gap, and the third voice coil is inserted and arranged in the third magnetic gap. The sound generating device can ensure that the supporting area of the dome is not excessively large, ensure that the dome has enough rigidity and strength, avoid the condition that the vibrating diaphragm is subjected to split vibration, and greatly improve the acoustic performance of the sound generating device.
Description
Technical Field
The application relates to the field of electroacoustic conversion, in particular to a sound generating device.
Background
The sound generating device is a transducer for converting an electric signal into an acoustic signal and mainly 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 and drive the vibration system to vibrate; the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate; the vibrating diaphragm comprises a ring-shaped folded ring fixed on the basin frame, a vibrating part fixed on the folded ring and a ball top fixed on one side of the vibrating part far away from the magnetic circuit system; the magnetic circuit system mainly comprises a lower clamping plate and magnetic steel fixed on the lower clamping plate. In order to improve the acoustic performance of the sound generating device, the sound generating device is designed into a large-size full-frequency-band coaxial sound generating device, namely a large-size full-frequency-band coaxial sound generating device.
The main design mode of the large-size full-band coaxial sound generating device in the related art is to fix a single voice coil on one side of the vibration part, which is close to the magnetic circuit system, and the design mode can lead to overlarge supporting area of the dome, so that when the actual rigidity and strength are insufficient, the vibration of the diaphragm is easily caused to be split, and the acoustic performance of the large-size full-band coaxial sound generating device is seriously influenced.
Therefore, there is a need to provide a new sound emitting device to solve the above-mentioned technical problems.
Disclosure of Invention
The application aims to provide a sound generating device so as to solve the problem that a diaphragm is easy to generate split vibration in a mode of designing a single voice coil in a large-size full-frequency band coaxial sound generating device in the related art.
In order to achieve the above purpose, the application provides a sound generating device, which 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 and drive the vibration system to vibrate;
the vibration system comprises a vibrating diaphragm, a first voice coil, a second voice coil and a third voice coil, wherein the first voice coil, the second voice coil and the third voice coil are arranged at intervals and drive the vibrating diaphragm to vibrate; the vibrating diaphragm comprises a first annular folding ring, a second annular folding ring arranged at intervals on the inner side of the first annular folding ring and an annular vibrating part; the outer periphery of the first folding ring is fixed on the basin frame, the inner periphery of the first folding ring is fixed on the outer periphery of the vibrating part, and the second folding ring is fixed on the inner periphery of the vibrating part close to the periphery of the first folding ring; the first voice coil, the second voice coil and the third voice coil are connected in series and are respectively fixed on one side of the vibration part close to the magnetic circuit system;
a first magnetic gap, a second magnetic gap and a third magnetic gap which are mutually spaced are arranged on one side, close to the vibration system, of the magnetic circuit system, and the first magnetic gap and the third magnetic gap are respectively positioned on two opposite sides of the second magnetic gap; the first voice coil is inserted and arranged in the first magnetic gap, the second voice coil is inserted and arranged in the second magnetic gap, and the third voice coil is inserted and arranged in the third magnetic gap.
Preferably, the diaphragm is rectangular; the vibration system further comprises two ball tops respectively attached and fixed on one side of the vibration part far away from the magnetic circuit system; the two ball tops are respectively arranged at two opposite sides of the second folding ring.
Preferably, the second folding ring comprises a ring-shaped folding ring part, a ring-shaped folding ring wall which is bent and extended from the inner periphery of the folding ring part to one side far away from the magnetic circuit system, and a folding ring plate which covers the top of the folding ring wall, and the outer periphery of the folding ring part is fixed on the inner periphery of the vibration part.
Preferably, the vibration system further comprises an elastic member having a rectangular shape; the elastic piece comprises a ring-shaped supporting part fixed on the basin frame, a connecting part arranged at intervals with the supporting part, and four elastic parts respectively bent and extended from the four corners of the supporting part and connected to the connecting part; the connecting portion is fixed in the vibrating portion, the first voice coil, the second voice coil and the third voice coil are respectively fixed on one side, away from the vibrating portion, of the connecting portion.
Preferably, the connecting part comprises two connecting parts which are in a Chinese character 'ri' shape; each group of two adjacent elastic parts are respectively connected to two adjacent corner positions of one connecting part; the first voice coil is fixed on a rectangular part of one connecting part, which is close to the elastic part connected with the connecting part, the second voice coil is respectively fixed on edge parts of the two connecting parts, which are close to each other, and the third voice coil is fixed on a rectangular part of the other connecting part, which is close to the elastic part connected with the connecting part.
Preferably, the magnetic circuit system comprises a lower clamping plate, a first main magnetic steel, a second main magnetic steel and a third main magnetic steel which are sequentially overlapped and fixed on one side of the lower clamping plate close to the vibration system and are mutually spaced, a plurality of first auxiliary magnetic steels which are overlapped and fixed on the lower clamping plate and are arranged around the first main magnetic steel, a plurality of second auxiliary magnetic steels which are overlapped and fixed on the lower clamping plate and are arranged around the second main magnetic steel, and a plurality of third auxiliary magnetic steels which are overlapped and fixed on the lower clamping plate and are arranged around the third main magnetic steel; the first auxiliary magnetic steels and the first main magnetic steels are respectively separated to form a first magnetic gap, the second auxiliary magnetic steels are close to the first auxiliary magnetic steels of the second main magnetic steels and the third auxiliary magnetic steels close to the second main magnetic steels are respectively separated to form a second magnetic gap with the second main magnetic steels, and the third auxiliary magnetic steels are respectively separated to form a third magnetic gap with the third main magnetic steels.
Preferably, the magnetic circuit system further comprises a first central magnetic steel which is overlapped and fixed on one side of the second main magnetic steel close to the vibration system, and a second central magnetic steel which is overlapped and fixed on one side of the first central magnetic steel close to the vibration system; the second folding ring is also fixed on one side of the first central magnetic steel, which is far away from the second main magnetic steel.
Preferably, the magnetic circuit system further comprises a first pole core which is overlapped and fixed on one side of the first main magnetic steel close to the vibration system, a second pole core which is overlapped and fixed on one side of the second main magnetic steel close to the vibration system, and a third pole core which is overlapped and fixed on one side of the third main magnetic steel close to the vibration system; the pole core which is overlapped and fixed on the second main magnetic steel is positioned between the second main magnetic steel and the first central magnetic steel.
Preferably, the magnetizing directions of the first main magnetic steel, the second main magnetic steel, the third main magnetic steel, the first auxiliary magnetic steel, the second auxiliary magnetic steel, the third auxiliary magnetic steel and the first central magnetic steel are all along the vibrating direction of the vibrating diaphragm; the magnetizing directions of the first main magnetic steel, the second main magnetic steel and the third main magnetic steel are the same, and the magnetizing directions of the first auxiliary magnetic steel, the second auxiliary magnetic steel, the third auxiliary magnetic steel and the first center magnetic steel are opposite to the magnetizing direction of the first main magnetic steel.
Preferably, the first auxiliary magnetic steel comprises four, and the four first auxiliary magnetic steels are arranged around the periphery of the first main magnetic steel; the second auxiliary magnetic steel comprises two pieces, wherein the two pieces of the second auxiliary magnetic steel are arranged around the other two peripheral sides, which are not close to the first main magnetic steel and the third main magnetic steel, of the second main magnetic steel; the four third auxiliary magnetic steels are arranged around the periphery of the third main magnetic steel; the magnetic circuit system further comprises a first annular upper clamping plate, a second flat upper clamping plate and a third upper clamping plate; the first upper clamping plate is respectively overlapped and fixed on three first auxiliary magnetic steels which are not close to the second main magnetic steel, two second auxiliary magnetic steels and three third auxiliary magnetic steels which are not close to the second main magnetic steel, the first upper clamping plate is also fixed on the basin frame, the first upper clamping plate is respectively positioned on one side of the first auxiliary magnetic steel, which is close to the vibration system, the second auxiliary magnetic steel and one side of the third auxiliary magnetic steel, which is close to the vibration system, the second upper clamping plate is overlapped and fixed on one first auxiliary magnetic steel, which is close to the second main magnetic steel, the second upper clamping plate is positioned on one side of the first auxiliary magnetic steel, which is close to the vibration system, the third upper clamping plate is overlapped and fixed on one third auxiliary magnetic steel, which is close to the second main magnetic steel, and the third upper clamping plate is positioned on one side of the third auxiliary magnetic steel, which is close to the vibration system.
Compared with the related art, the sound generating device has the advantages that three voice coils which are sequentially connected in series are designed on the vibrating diaphragm, so that the supporting area of the dome is not excessively large, the dome is ensured to have enough rigidity and strength, the condition that the vibrating diaphragm is subjected to split vibration is avoided, and the acoustic performance of the sound generating device is greatly improved.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
fig. 1 is a schematic perspective view of a sound generating device according to an embodiment of the present application;
fig. 2 is a schematic exploded view of a sound emitting device according to an embodiment of the present application;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a graph showing the polarity distribution of each magnetic steel in the sounding device after being sectioned along line A-A in fig. 1.
In the figure, 100, a sound emitting device; 1. a basin stand; 2. a vibration system; 21. a vibrating diaphragm; 211. a first collar; 212. a second collar; 2121. a ring folding part; 2122. folding the annular wall; 2123. a ring folding plate; 213. a vibration section; 214. a dome; 22. a first voice coil; 23. a second voice coil, 24, a third voice coil; 25. an elastic member; 251. a support part; 252. an elastic part; 253. a connection part; 3. a magnetic circuit system; 31. a lower clamping plate; 32. a first primary magnetic steel; 33. a second main magnetic steel; 34. a third main magnetic steel; 35. a first secondary magnetic steel; 36. a second auxiliary magnetic steel; 37. a third secondary magnetic steel; 38. a first center magnetic steel; 39. a second center magnetic steel; 310. a first pole piece; 311. a second pole core; 312. a third pole core; 313. a first upper clamping plate; 314. a second upper clamping plate; 315. a third upper clamping plate; 10. a first magnetic gap; 20. a second magnetic gap; 30. and a third magnetic gap.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
It should be noted that the expressions "upper", "lower", "left", "right", etc. mentioned in the embodiments of the present application are described with reference to the placed state in the drawings, and should not be interpreted as limiting embodiments of the present application. It will be further understood that, in the context of an element that constitutes "above" or "below" another element, it is possible that the element constitutes directly "above" or "below" the other element, and that the element constitutes "above" or "below" the other element via an intervening element.
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1 to 4, an embodiment of the present application provides a sound emitting device 100 including a tub 1, a vibration system 2 fixed to the tub 1, and a magnetic circuit system 3 driving the vibration system 2 to vibrate, respectively.
Wherein the vibration system 2 comprises a vibrating diaphragm 21, and a first voice coil 22, a second voice coil 23 and a third voice coil 24 which drive the vibrating diaphragm 21 to vibrate and are arranged at intervals; the diaphragm 21 includes a first annular ring 211, a second annular ring 212 disposed at an interval inside the first annular ring 211, and an annular vibrating portion 213; the outer periphery of the first folding ring 211 is fixed on the basin frame 1, the inner periphery of the first folding ring 211 is fixed on the outer periphery of the vibrating part 213, and the second folding ring 212 is fixed on the inner periphery of the vibrating part 213 near the periphery of the first folding ring 211; the first voice coil 22, the second voice coil 23, and the third voice coil 24 are connected in series and are fixed to the vibration part 213 on the side close to the magnetic circuit 3.
The side of the magnetic circuit system 3, which is close to the vibration system 2, is provided with a first magnetic gap 10, a second magnetic gap 20 and a third magnetic gap 30 which are mutually spaced, and the first magnetic gap 10 and the third magnetic gap 30 are respectively positioned on two opposite sides of the second magnetic gap 20; the first voice coil 22 is inserted and suspended in the first magnetic gap 10, the second voice coil 23 is inserted and suspended in the second magnetic gap 20, and the third voice coil 24 is inserted and suspended in the third magnetic gap 30.
In this embodiment, the second ring 212 includes a ring-shaped ring portion 2121, a ring-shaped wall 2122 extending from an inner periphery of the ring-shaped ring portion 2121 to a side away from the magnetic circuit 3, and a ring-shaped plate 2123 covering a top portion of the ring-shaped wall 2122, wherein an outer periphery of the ring-shaped ring portion 2121 is fixed to an inner periphery of the vibration portion 213.
Specifically, the vibration system 2 further includes a dome 214 attached to a side of the vibration portion 213 away from the magnetic circuit 3.
In this embodiment, the diaphragm 21 is rectangular; the dome 214 includes two portions and is disposed on two opposite sides of the second folding ring 212.
Specifically, the vibration system 2 further includes an elastic member 25 having a rectangular shape; the elastic member 25 includes a supporting portion 251 fixed to the tub frame 1 and having a ring shape, a connecting portion 253 provided at a distance from the supporting portion 251, and four elastic portions 252 respectively bent and extended from four corners of the supporting portion 251 and connected to the connecting portion 253; the connection portion 253 is fixed to the vibration portion 213, and the first voice coil 22, the second voice coil 23, and the third voice coil 24 are respectively fixed to the connection portion 253 on the side away from the vibration portion 213.
In this embodiment, the connection portion 253 includes two portions in a zigzag shape; each group of two adjacent elastic parts 252 are respectively connected to two adjacent corner positions of one connecting part 253; the first voice coil 22 is fixed to a rectangular portion of one of the connection portions 253 adjacent to the elastic portion 252 connected thereto, the second voice coil 23 is fixed to edge portions of the two connection portions 253 adjacent to each other, and the third voice coil 24 is fixed to a rectangular portion of the other connection portion 253 adjacent to the elastic portion 252 connected thereto.
Specifically, the magnetic circuit 3 includes a lower plate 31, a first main magnet steel 32, a second main magnet steel 33, and a third main magnet steel 34, which are sequentially stacked and fixed on one side of the lower plate 31 near the vibration system 2 and are spaced apart from each other, a plurality of first auxiliary magnet steels 35, which are stacked and fixed on the lower plate 31 and are arranged around the first main magnet steel 32, a plurality of second auxiliary magnet steels 36, which are stacked and fixed on the lower plate 31 and are arranged around the second main magnet steel 33, and a plurality of third auxiliary magnet steels 37, which are stacked and fixed on the lower plate 31 and are arranged around the third main magnet steel 34; the first plurality of secondary magnetic steels 35 are respectively spaced from the first primary magnetic steel 32 to form a first magnetic gap 10, the second plurality of secondary magnetic steels 36, the first secondary magnetic steel 35 close to the second primary magnetic steel 33 and the third secondary magnetic steel 37 close to the second primary magnetic steel 33 are respectively spaced from the second primary magnetic steel 33 to form a second magnetic gap 20, and the third plurality of secondary magnetic steels 37 are respectively spaced from the third primary magnetic steel 34 to form a third magnetic gap 30.
In this embodiment, the magnetic circuit system 3 is rectangular; the first auxiliary magnetic steel 35 comprises four, and the four first auxiliary magnetic steel 35 is arranged around the periphery of the first main magnetic steel 32; the second auxiliary magnetic steel 36 comprises two second auxiliary magnetic steels 36 which are arranged around the second main magnetic steel 33 and are not close to the other two peripheral sides of the first main magnetic steel 32 and the third main magnetic steel 34, and the second magnetic gap 20 is formed by spacing the two second auxiliary magnetic steels 36, one first auxiliary magnetic steel 35 close to the second main magnetic steel 33 and one third auxiliary magnetic steel 37 close to the second main magnetic steel 33 from the second main magnetic steel 33 respectively; the third auxiliary magnetic steel 37 includes four, four third auxiliary magnetic steel 37 are arranged around the peripheral side of the third main magnetic steel 34.
Specifically, the magnetic circuit system 3 further includes a first central magnetic steel 38 stacked on the side of the second main magnetic steel 33 close to the vibration system 2, and a second central magnetic steel 39 stacked and fixed on the side of the first central magnetic steel 38 close to the vibration system 2; the second ring 212 is further fixed to a side of the first central magnetic steel 38 away from the second main magnetic steel 33. The design can effectively utilize the spare space of the sound generating device 100 and the added first central magnetic steel 38 and second central magnetic steel 39 to increase the overall BL value, thereby avoiding the space waste of the sound generating device 100.
The second ring 212 is fixed to a side of the first central magnetic steel 38 away from the second main magnetic steel 33 through an inner periphery of the ring-folding portion 2121.
In this embodiment, the magnetizing directions of the first main magnetic steel 32, the second main magnetic steel 33, the third main magnetic steel 34, the first auxiliary magnetic steel 35, the second auxiliary magnetic steel 36, the third auxiliary magnetic steel 37, the first central magnetic steel 38 and the second central magnetic steel 39 are all along the vibrating direction of the vibrating diaphragm 21; the magnetizing directions of the first main magnetic steel 32, the second main magnetic steel 33 and the third main magnetic steel 34 are the same, and the magnetizing directions of the first auxiliary magnetic steel 35, the second auxiliary magnetic steel 36, the third auxiliary magnetic steel 37, the first central magnetic steel 38 and the second central magnetic steel 39 are opposite to the magnetizing direction of the first main magnetic steel 32. "N" and "S" in fig. 4 represent the N-pole and S-pole of each magnetic steel, respectively.
Specifically, the magnetic circuit system 3 further includes a first pole core 310 stacked and fixed on the side of the first main magnetic steel 32 close to the vibration system 2, a second pole core 311 stacked and fixed on the side of the second main magnetic steel 33 close to the vibration system 2, and a third pole core 312 stacked and fixed on the side of the third main magnetic steel 34 close to the vibration system 2.
Wherein the second pole core 311 is located between the second main magnetic steel 33 and the first center magnetic steel 38.
Specifically, the magnetic circuit system 3 further includes a first upper clamping plate 313 in a ring shape, a second upper clamping plate 314 in a flat plate shape, and a third upper clamping plate 315; the first upper clamping plate 313 is respectively overlapped and fixed on three first auxiliary magnetic steels 35, two second auxiliary magnetic steels 36 which are not close to the second main magnetic steel 33 and three third auxiliary magnetic steels 37 which are not close to the second main magnetic steel 33, the first upper clamping plate 313 is also fixed on the basin frame 1, the first upper clamping plate 313 is respectively positioned on one side of the first auxiliary magnetic steel 35 which is close to the vibration system 2, one side of the second auxiliary magnetic steel 36 which is close to the vibration system 2 and one side of the third auxiliary magnetic steel 37 which is close to the vibration system 2, the second upper clamping plate 314 is overlapped and fixed on one first auxiliary magnetic steel 35 which is close to the second main magnetic steel 33, the second upper clamping plate 314 is positioned on one side of the first auxiliary magnetic steel 35 which is close to the vibration system 2, the third upper clamping plate 315 is overlapped and fixed on one third auxiliary magnetic steel 37 which is close to the second main magnetic steel 33, and the third upper clamping plate 315 is positioned on one side of the third auxiliary magnetic steel 37 which is close to the vibration system 2.
The sound generating device 100 of this embodiment is designed with three voice coils and a plurality of dome 214 connected in series in sequence on the diaphragm 21, so that the supporting area of the dome 214 is not excessively large, the dome 214 is ensured to have sufficient rigidity and strength, the diaphragm 21 is prevented from generating split vibration, and the acoustic performance of the sound generating device 100 is greatly improved.
It should be noted that the above embodiments described above with reference to the drawings are only for illustrating the present application and not for limiting the scope of the present application, and it should be understood by those skilled in the art that modifications or equivalent substitutions to the present application are intended to be included in the scope of the present application without departing from the spirit and scope of the present application. Furthermore, unless the context indicates otherwise, words occurring in the singular form include the plural form and vice versa. In addition, unless specifically stated, all or a portion of any embodiment may be used in combination with all or a portion of any other embodiment.
Claims (10)
1. The sound generating device 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; it is characterized in that the method comprises the steps of,
the vibration system comprises a vibrating diaphragm, a first voice coil, a second voice coil and a third voice coil, wherein the first voice coil, the second voice coil and the third voice coil are arranged at intervals and drive the vibrating diaphragm to vibrate; the vibrating diaphragm comprises a first annular folding ring, a second annular folding ring arranged at intervals on the inner side of the first annular folding ring and an annular vibrating part; the outer periphery of the first folding ring is fixed on the basin frame, the inner periphery of the first folding ring is fixed on the outer periphery of the vibrating part, and the second folding ring is fixed on the inner periphery of the vibrating part close to the periphery of the first folding ring; the first voice coil, the second voice coil and the third voice coil are connected in series and are respectively fixed on one side of the vibration part close to the magnetic circuit system;
a first magnetic gap, a second magnetic gap and a third magnetic gap which are mutually spaced are arranged on one side, close to the vibration system, of the magnetic circuit system, and the first magnetic gap and the third magnetic gap are respectively positioned on two opposite sides of the second magnetic gap; the first voice coil is inserted and arranged in the first magnetic gap, the second voice coil is inserted and arranged in the second magnetic gap, and the third voice coil is inserted and arranged in the third magnetic gap.
2. The sound emitting device of claim 1, wherein the diaphragm is rectangular; the vibration system further comprises two ball tops respectively attached and fixed on one side of the vibration part far away from the magnetic circuit system; the two ball tops are respectively arranged at two opposite sides of the second folding ring.
3. The sound generating device as claimed in claim 1, wherein the second folder ring comprises a ring-shaped folder ring part, a ring-shaped folder ring wall which is bent and extended from the inner periphery of the folder ring part to a side far away from the magnetic circuit system and is ring-shaped, and a folder ring plate which covers the top of the folder ring wall; the outer periphery of the folded ring part is fixed on the inner periphery of the vibration part.
4. The sound emitting device of claim 1, wherein the vibration system further comprises a rectangular elastic member; the elastic piece comprises a ring-shaped supporting part fixed on the basin frame, a connecting part arranged at intervals with the supporting part, and four elastic parts respectively bent and extended from the four corners of the supporting part and connected to the connecting part; the connecting portion is fixed in the vibrating portion, the first voice coil, the second voice coil and the third voice coil are respectively fixed on one side, away from the vibrating portion, of the connecting portion.
5. The sound emitting device of claim 4, wherein the connection portion comprises two in a japanese-character-shape; each group of two adjacent elastic parts are respectively connected to two adjacent corner positions of one connecting part; the first voice coil is fixed on a rectangular part of one connecting part, which is close to the elastic part connected with the connecting part, the second voice coil is respectively fixed on edge parts of the two connecting parts, which are close to each other, and the third voice coil is fixed on a rectangular part of the other connecting part, which is close to the elastic part connected with the connecting part.
6. The sound generating device as claimed in claim 1, wherein the magnetic circuit system comprises a lower plate, a first main magnetic steel, a second main magnetic steel and a third main magnetic steel which are sequentially stacked and fixed on one side of the lower plate close to the vibration system and are spaced from each other, a plurality of first auxiliary magnetic steels which are stacked and fixed on the lower plate and are arranged around the first main magnetic steel, a plurality of second auxiliary magnetic steels which are stacked and fixed on the lower plate and are arranged around the second main magnetic steel, and a plurality of third auxiliary magnetic steels which are stacked and fixed on the lower plate and are arranged around the third main magnetic steel; the first auxiliary magnetic steels and the first main magnetic steels are respectively separated to form a first magnetic gap, the second auxiliary magnetic steels, the first auxiliary magnetic steels close to the second main magnetic steels and the third auxiliary magnetic steels close to the second main magnetic steels are respectively separated to form a second magnetic gap with the second main magnetic steels, and the third auxiliary magnetic steels are respectively separated to form a third magnetic gap with the third main magnetic steels.
7. The sound generating device as recited in claim 6, wherein the magnetic circuit system further comprises a first center magnetic steel stacked and fixed on a side of the second main magnetic steel close to the vibration system, and a second center magnetic steel stacked and fixed on a side of the first center magnetic steel close to the vibration system; the second folding ring is also fixed on one side of the first central magnetic steel, which is far away from the second main magnetic steel.
8. The sound generating device as recited in claim 7, wherein the magnetic circuit system further comprises a first pole core stacked and fixed on a side of the first main magnetic steel close to the vibration system, a second pole core stacked and fixed on a side of the second main magnetic steel close to the vibration system, and a third pole core stacked and fixed on a side of the third main magnetic steel close to the vibration system; the second pole core is positioned between the second main magnetic steel and the first central magnetic steel.
9. The sound generating device of claim 7, wherein the magnetizing directions of the first main magnetic steel, the second main magnetic steel, the third main magnetic steel, the first auxiliary magnetic steel, the second auxiliary magnetic steel, the third auxiliary magnetic steel, the first center magnetic steel and the second center magnetic steel are all along the vibrating direction of the vibrating diaphragm; the magnetizing directions of the first main magnetic steel, the second main magnetic steel and the third main magnetic steel are the same, and the magnetizing directions of the first auxiliary magnetic steel, the second auxiliary magnetic steel, the third auxiliary magnetic steel, the first central magnetic steel and the second central magnetic steel are opposite to the magnetizing direction of the first main magnetic steel.
10. The sound generating device of claim 6, wherein the first secondary magnetic steel comprises four, four of the first secondary magnetic steels being disposed around the periphery of the first primary magnetic steel; the second auxiliary magnetic steel comprises two pieces, wherein the two pieces of the second auxiliary magnetic steel are arranged around the other two peripheral sides, which are not close to the first main magnetic steel and the third main magnetic steel, of the second main magnetic steel; the four third auxiliary magnetic steels are arranged around the periphery of the third main magnetic steel; the magnetic circuit system further comprises a first annular upper clamping plate, a second flat upper clamping plate and a third upper clamping plate; the first upper clamping plate is respectively overlapped and fixed on three first auxiliary magnetic steels which are not close to the second main magnetic steel, two second auxiliary magnetic steels and three third auxiliary magnetic steels which are not close to the second main magnetic steel, the first upper clamping plate is also fixed on the basin frame, the first upper clamping plate is respectively positioned on one side of the first auxiliary magnetic steel, which is close to the vibration system, the second auxiliary magnetic steel and one side of the third auxiliary magnetic steel, which is close to the vibration system, the second upper clamping plate is overlapped and fixed on one first auxiliary magnetic steel, which is close to the second main magnetic steel, the second upper clamping plate is positioned on one side of the first auxiliary magnetic steel, which is close to the vibration system, the third upper clamping plate is overlapped and fixed on one third auxiliary magnetic steel, which is close to the second main magnetic steel, and the third upper clamping plate is positioned on one side of the third auxiliary magnetic steel, which is close to the vibration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331832.7A CN117082418B (en) | 2023-10-16 | 2023-10-16 | Sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN117082418B (en) | 2024-02-20 |
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