CN117082416A - Sounding device - Google Patents
Sounding device Download PDFInfo
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- CN117082416A CN117082416A CN202311319334.0A CN202311319334A CN117082416A CN 117082416 A CN117082416 A CN 117082416A CN 202311319334 A CN202311319334 A CN 202311319334A CN 117082416 A CN117082416 A CN 117082416A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 230000000149 penetrating effect Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 2
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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 invention provides a sound generating device, which comprises a magnetic circuit system, wherein the magnetic circuit system comprises: a lower clamping plate; the first main magnetic steel is overlapped and fixed on the lower clamping plate and is provided with two second through holes; the auxiliary magnetic steel is separated from the first main magnetic steel to form a first magnetic gap; the pole core comprises a pole core body fixed on the first main magnetic steel, a ring-shaped pole core wall bent and extended from the inner peripheral side of the pole core body, a pole core plate covered at the top end of the pole core wall and two third through holes penetrating through the pole core plate; the second main magnetic steel is overlapped and fixed on the pole core body and forms a second magnetic gap with the pole core wall at intervals; the upper clamping plate is fixedly overlapped with the auxiliary magnetic steel and fixedly connected with the first basin frame; the second basin stand is supported and fixed on the top of the second main magnetic steel; the two ends of the conductive piece pass through the two second through holes and the two third through holes in sequence respectively through the first through holes, are fixed on the top of the pole core plate, and are electrically connected with the second voice coil. Compared with the related art, the acoustic device has better acoustic performance.
Description
Technical Field
The invention relates to the field of electroacoustic conversion, in particular to a sound generating device.
Background
The sound generating device is a transducer device for converting an electric signal into an acoustic signal and is mainly divided into a single vibration system and a double vibration system, wherein the sound generating device in the double vibration system mode mainly comprises a first vibration system fixed on a basin frame and used for generating bass and a second vibration system fixed on a magnetic circuit system and used for generating treble.
In the sounding device of the dual vibration system mode of the related art, the second vibration system is supported and fixed in the middle area of the magnetic circuit system, and cannot be directly connected with the basin frame, and then the voice coil cannot be electrically connected with the external circuit board through the conductive component arranged on the basin frame, so that the sounding device of the related art is provided with the through hole penetrating the whole magnetic circuit system upwards through the bottom of the magnetic circuit system for giving way to the conductive component, and then the conductive component is arranged in the through hole, so that the top of the conductive component is positioned below the second vibration system for introducing an electric signal to the voice coil of the second vibration system. However, in the sounding device of the related art, the middle integral structure of the magnetic circuit system is hollowed out due to the arrangement of the through holes, so that the effective volume of the magnetic circuit system is reduced, the integral magnetic potential of the magnetic circuit system is reduced, namely the driving force is weakened, and the acoustic performance of the sounding device is reduced.
Therefore, there is a need to provide a new sound emitting device to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a sound generating device with better acoustic performance in a double-vibration system mode.
In order to achieve the above object, the present invention provides a sound emitting device including: a first basin stand;
the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second vibrating diaphragm, wherein the outer periphery of the first vibrating diaphragm is fixed on the first basin frame;
the magnetic circuit system is fixed on the first basin frame, a first magnetic gap and a second magnetic gap are formed in one side, close to the first vibration system, of the magnetic circuit system, and the first magnetic gap surrounds the second magnetic gap; the first voice coil is inserted and suspended in the first magnetic gap;
the second basin frame is fixed at the top of the magnetic circuit system;
the second vibration system comprises a second vibrating diaphragm and a second voice coil, the outer periphery of the second vibrating diaphragm is fixed on one side, far away from the magnetic circuit system, of the second basin frame, the second voice coil drives the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted and arranged in the second magnetic gap in a suspending manner; the method comprises the steps of,
the conductive piece penetrates through the magnetic circuit system from the bottom of the magnetic circuit system, extends to the lower part of the second vibrating diaphragm and is electrically connected with the second voice coil;
the magnetic circuit system includes:
the lower clamping plate is provided with a first through hole penetrating through the lower clamping plate;
the first main magnetic steel is overlapped and fixed on the lower clamping plate and is provided with two second through holes penetrating through the first main magnetic steel;
the auxiliary magnetic steel surrounds the first main magnetic steel and forms the first magnetic gap with the first main magnetic steel at intervals;
the pole core comprises a ring-shaped pole core body which is fixedly overlapped with the first main magnetic steel, a ring-shaped pole core wall which is bent and extended from the inner periphery of the pole core body to the direction close to the second vibrating diaphragm, a pole core plate which is formed at the top end of the pole core wall, and two third through holes which penetrate through the pole core plate;
the second main magnetic steel is overlapped and fixed on the pole core body, the second main magnetic steel is arranged around the pole core wall and forms a second magnetic gap with the pole core wall at intervals, and the second basin stand is supported and fixed on the top of the second main magnetic steel; the method comprises the steps of,
the upper clamping plate is fixedly overlapped with the auxiliary magnetic steel and fixedly connected with the first basin frame;
the conductive piece comprises an external conductive disc, two extending walls, two connecting walls and two connecting walls, wherein the external conductive disc is abutted to the bottom of the first main magnetic steel, the two extending walls are bent and extended from the opposite ends of the external conductive disc and sequentially penetrate through the two second through holes and the two third through holes respectively, the two connecting walls are bent and extended from the two extending walls respectively and fixed to the top end of the pole core plate at intervals, the two connecting walls are used as bonding pads, and the positive electrode end and the negative electrode end of the second voice coil are electrically connected to the two connecting walls respectively.
Preferably, the two second through holes are opposite to the two third through holes, respectively, and orthographic projections of the second through holes and the third through holes downward along the vibration direction of the second vibrating diaphragm are completely located in the range of the first through holes.
Preferably, the magnetic circuit system further comprises an annular auxiliary pole core which is overlapped on one side of the second main magnetic steel, far away from the pole core body, and the inner peripheral side of the second basin frame is fixedly connected with the outer peripheral side of the auxiliary pole core.
Preferably, the first vibrating diaphragm comprises a first annular folding ring, a second annular folding ring which is arranged at intervals on the inner side of the first folding ring, and a first annular vibrating part which is bent, extended and connected to the outer periphery of the second folding ring by the inner periphery of the first folding ring, wherein the outer periphery of the first folding ring is fixed on the first basin frame, and the inner periphery of the second folding ring is fixed on one side, far away from the first main magnetic steel, of the second main magnetic steel; the first voice coil is fixed on one side of the first vibration part, which is close to the magnetic circuit system.
Preferably, the inner periphery of the second folding ring is clamped and fixed between the second basin frame and the second main magnetic steel.
Preferably, the first vibration system further comprises a first skeleton and an elastic support assembly, wherein the first skeleton comprises a ring-shaped skeleton body serving as the first vibration part and a skeleton fixing part bent downwards from the outer periphery of the skeleton body; one end of the elastic supporting component is fixed to the first basin frame, and the other end of the elastic supporting component is fixed to the framework fixing portion.
Preferably, the second vibrating diaphragm comprises a second vibrating portion, a third ring and a dome, the third ring extends outwards from the outer periphery of the second vibrating portion and is annular, the dome covers the second vibrating portion, the outer periphery of the third ring is fixed on one side, far away from the second main magnetic steel, of the second basin frame, and the second voice coil is fixed on the second vibrating portion.
Preferably, the second vibrating diaphragm further comprises an auxiliary dome which is annular and is fixed on one side of the second vibrating part, which is close to the magnetic circuit system; the ball top is located one side of the second vibration part far away from the magnetic circuit system, and the second voice coil is fixed on one side of the auxiliary ball top close to the magnetic circuit system.
Preferably, the sound generating device further comprises a dust cover, wherein the dust cover comprises a cover body which is annular and is fixed on the periphery of the lower clamping plate, cover walls which are bent and extended from two opposite sides of the cover body, and a plurality of air holes which penetrate through the cover walls, and the cover walls are fixedly connected with the first basin frame.
Compared with the prior art, the sounding device is provided with the first through hole penetrating through the lower clamping plate; two second through holes penetrating through the first main magnetic steel are formed in the first main magnetic steel which is overlapped and fixed on the lower clamping plate; simultaneously, the pole core is arranged to comprise a ring-shaped pole core body which is overlapped and fixed on the first main magnetic steel, a ring-shaped pole core wall which protrudes and extends from the inner peripheral side of the pole core body, a pole core plate which is formed at the top end of the pole core wall, and two third through holes which penetrate through the pole core plate; therefore, the conductive piece can sequentially pass through the first through hole, the second through hole and the third through hole from the bottom of the magnetic circuit system to reach the lower part of the second vibrating diaphragm for generating high sound, the purpose of supplying power to the second voice coil is realized, and the winding process of the second voice coil is effectively adjusted to control the total length of extension of the two ends of the voice coil wire, so that the amplitude adjustment of the second vibrating system is realized; meanwhile, although the conducting piece also passes through the bottom of the magnetic circuit system and extends to the top of the magnetic circuit system, the middle of the first main magnetic steel does not need to be hollowed out integrally due to giving way to the conducting piece, and the conducting piece passes through the two second through holes, so that the part of the first main magnetic steel, which is positioned between the two second through holes, is reserved, the size of the first main magnetic steel is increased as much as possible, and the magnetic potential of the magnetic circuit system is effectively improved; and the protruding structure formed by the pole core wall and the pole core plate on the pole core enables the pole core to be integral without hollowing, and the conductive piece passes through the two third through holes arranged on the pole core plate, so that the part between the two third through holes of the pole core is reserved, the loss of magnetic force lines is greatly reduced, and the acoustic performance of the sounding device is better.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, 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 invention, 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 invention;
fig. 2 is an exploded schematic view of a three-dimensional structure of a sound emitting device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a sectional view taken along line B-B of fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 4, an embodiment of the present invention provides a sound emitting device 100, including: a first basin frame 1, a first vibration system 2, a magnetic circuit system 3, a second basin frame 4, a second vibration system 5 and a conductive member 6.
The first basin frame 1 is used for supporting the first vibration system 2 and the magnetic circuit system 3. In this embodiment, the first basin frame 1 is an annular structure surrounded by metal sheets.
The first vibration system 2 comprises a first vibrating diaphragm 21 with an outer periphery fixed on the first basin frame 1 and a first voice coil 22 for driving the first vibrating diaphragm 21 to vibrate and sound. In this embodiment, the first diaphragm 21 is used to generate low-frequency sound.
The magnetic circuit system 3 is fixed on the first basin frame 1, a first magnetic gap 31 and a second magnetic gap 32 are arranged on one side, close to the first vibration system 2, of the magnetic circuit system 3, and the first magnetic gap 31 surrounds the second magnetic gap 32; the first voice coil 22 is inserted and suspended in the first magnetic gap 31.
The second basin stand 4 is fixed on the top of the magnetic circuit system 3 and is used for supporting the second vibration system 5.
The second vibration system 5 includes a second diaphragm 51 with an outer periphery fixed on a side of the second frame 4 away from the magnetic circuit 3, and a second voice coil 52 driving the second diaphragm 51 to vibrate and sound, where the second voice coil 52 is inserted and suspended in the second magnetic gap 32. In this embodiment, the second diaphragm 51 is used to generate high-frequency sound.
That is, the first vibration system 2 and the second vibration system 5 share the magnetic circuit system 3, and sounds in different frequency bands are generated by driving the magnetic circuit system 3.
The conductive member 6 penetrates the magnetic circuit 3 from the bottom of the magnetic circuit 3, extends below the second diaphragm 51, and is electrically connected to the second voice coil 52, so as to introduce an external electrical signal to the second voice coil 52. And the electric signal of the first voice coil 22 is supplied through the conductive terminal fixed on the first basin frame 1.
Specifically, in this embodiment, the magnetic circuit 3 includes a lower clamping plate 33, a first main magnetic steel 34, an auxiliary magnetic steel 35, a pole core 36, a second main magnetic steel 37, and an upper clamping plate 38.
The lower clamping plate 33 is used for supporting the first main magnetic steel 34 and the auxiliary magnetic steel 35, and is provided with a first through hole 331 penetrating through the lower clamping plate.
The first main magnetic steel 34 is stacked and fixed on the lower clamping plate 33, and the first main magnetic steel 34 is provided with two second through holes 341 penetrating through the first main magnetic steel 34. Because the first main magnetic steel 34 is not hollowed out in the middle for abdication, but two second through holes 341 are arranged, the part of the first main magnetic steel 34 between the two second through holes 341 is reserved, the whole effective volume of the first main magnetic steel 34 is reserved to a great extent, and larger magnetic field performance can be provided.
The auxiliary magnetic steel 35 is disposed around the first main magnetic steel 34 and is spaced from the first main magnetic steel 34 to form the first magnetic gap 31.
The pole core 36 includes a pole core body 361 having a ring shape and stacked and fixed on the first main magnetic steel 34, a pole core wall 362 having a ring shape and extending from an inner periphery of the pole core body 361 to a direction approaching the second diaphragm 51, a pole core plate 363 formed at a top end of the pole core wall 362, and two third through holes 364 penetrating the pole core plate 363. The pole core 36 is used for magnetic conduction, and when the cover is arranged on the first main magnetic steel 34, the loss of magnetic force lines generated by the first main magnetic steel 34 can be reduced as much as possible so as to improve the magnetic field performance. In the present embodiment, the pole core plates 363 corresponding to the middle position of the pole core 36 are not hollowed out entirely for giving way, but by providing two third through holes 364, the portion of the pole core plates 363 between the two third through holes 364 is reserved for magnetic conduction, so that the loss of magnetic lines of force generated by the first main magnetic steel 34 is avoided to a great extent, and the magnetic field performance of the magnetic circuit system 3 is better.
The second main magnetic steel 37 is stacked and fixed on the pole core body 361, the second main magnetic steel 37 surrounds the pole core wall 362 and forms the second magnetic gap 32 with the pole core wall 362 at intervals, and the second basin stand 4 is supported and fixed on the top of the second main magnetic steel 37.
The upper clamping plate 38 is fixedly stacked on the auxiliary magnetic steel 35 and fixedly connected with the first basin frame 1, so that the whole magnetic circuit system 3 is fixed on the first basin frame 1. Of course, the whole magnetic circuit system 3 may be fixed to the first frame 1 by fixedly connecting the lower clamping plate 33 to the first frame 1.
The conductive member 6 is formed by bending a strip-shaped conductive structure, such as a flexible circuit board, so that both ends of the conductive member 6 pass through the first through holes 331 from the bottom of the magnetic circuit 3, then sequentially pass through the two second through holes 341 and the two third through holes 364, and then are fixed on the top of the pole core plate 363, and electrically connected to the second voice coil 52, so as to supply power to the second voice coil 52.
Specifically, in this embodiment, the conductive member 6 includes an external conductive plate 61 abutting against the bottom of the first main magnetic steel 34, two extending walls 62 bent and extended from opposite ends of the external conductive plate 61 and respectively passing through the two second through holes 341 and the two third through holes 364 in sequence, and two connecting walls 63 bent and extended from the two extending walls 62 and fixed to the top end of the pole core plate 363 and spaced from each other. The external conductive plate 61 is used for connecting an external electric signal source, the two connection walls 63 are used as pads, and the positive and negative ends of the second voice coil 52 are electrically connected to the two connection walls 63, respectively. In this embodiment, the conductive member 6 is an FPCB.
More preferably, in this embodiment, the two second through holes 341 are disposed opposite to the two third through holes 364, respectively, and the orthographic projections of the second through holes 341 and the third through holes 364 along the vibration direction of the second diaphragm 51 are completely located in the range of the first through holes 331. The arrangement of the structure enables the conductive element 6 to be assembled more conveniently, and the extension wall 62 of the conductive element 6 is not deformed, so that the reliability is better.
In order to further improve the magnetic field performance of the magnetic circuit system 3, the magnetic circuit system 3 further includes an annular auxiliary pole core 39 overlapped on one side of the second main magnetic steel 37 away from the pole core body 361, so as to effectively reduce the loss of magnetic force lines of the second main magnetic steel 37. The inner peripheral side of the second frame 4 is fixedly connected with the outer peripheral side of the auxiliary pole core 39, so that the structural stability of the second frame 4 is improved.
In this embodiment, the first diaphragm 21 and the second diaphragm 51 may have a single-folded ring structure, and at this time, the first diaphragm 21 is located above the second diaphragm 51 and covers the second diaphragm 51, and the second diaphragm 51 needs to form a side sound. Of course, the present embodiment may be applied to the following embodiments: the first diaphragm 21 is a double-folded ring structure, the second diaphragm 51 is a single-folded ring structure, and the two diaphragms are basically located on the same plane, which is specifically as follows:
the first diaphragm 21 includes a first annular ring 211, a second annular ring 212 disposed at an inner side of the first ring 211 at intervals, and a first annular vibrating portion 213 extending from an inner periphery of the first ring 211 in a bending manner and connected to an outer periphery of the second ring 212. The outer periphery of the first folding ring 211 is fixed on the first basin frame 1, and the inner periphery of the second folding ring 212 is fixed on one side of the second main magnetic steel 37 away from the first main magnetic steel 34. The first voice coil 22 is fixed to a side of the first vibration part 213 close to the magnetic circuit system 3.
More preferably, the inner periphery of the second ring 212 is clamped and fixed between the second frame 4 and the second main magnetic steel 37, so as to improve the structural stability of the first diaphragm 21 during vibration.
In this embodiment, the first vibration system 2 further includes a first skeleton 23 and an elastic support member 24. The first frame 23 includes a frame body 231 having a ring shape for serving as the first vibration part 213, and a frame fixing part 232 bent and extended downward from an outer circumference of the frame body 231. One end of the elastic support assembly 24 is fixed to the first frame 1, and the other end of the elastic support assembly 24 is fixed to the frame fixing portion 232, so as to increase the vibration performance of the first diaphragm 21 and improve the yaw preventing capability of the first voice coil 22, thereby improving reliability. Of course, the elastic support member 24 may be an FPC, that is, simultaneously introducing an electrical signal to the first voice coil 22.
The second diaphragm 51 includes a second vibrating portion 511, a third ring 512 extending outward from an outer periphery of the second vibrating portion 511 and having a ring shape, and a dome 513 covering the second vibrating portion 511. The outer periphery of the third gimbal 512 is fixed to a side of the second frame 4 away from the second main magnetic steel 37, and the second voice coil 52 is fixed to the second vibration part 511.
Preferably, the second diaphragm 51 further includes an auxiliary dome 514 having a ring shape and fixed to a side of the second vibration portion 511 near the magnetic circuit 3. The dome 513 is located at a side of the second vibration part 511 away from the magnetic circuit system 3, the second voice coil 52 is fixed at a side of the auxiliary dome 514 close to the magnetic circuit system 3, and the arrangement of the auxiliary dome 514 enables the second voice coil 52 to be inserted into the second magnetic gap 32 more, so as to improve the vibration performance of the second diaphragm 51.
The sound generating device 100 further includes a dust cover 7, where the dust cover 7 includes a cover body 71 that is annular and fixed to a periphery of the lower plate 33, a cover wall 72 that is bent and extended from two opposite sides of the cover body 71, and a plurality of air holes 73 that penetrate through the cover wall 72, and the cover wall 72 is fixedly connected to the first basin frame 1. The cover wall 72 may be located at any of four corner positions, a major axis side position, and a minor axis side position of the lower clamp plate 33.
Compared with the prior art, the sounding device is provided with the first through hole penetrating through the lower clamping plate; two second through holes penetrating through the first main magnetic steel are formed in the first main magnetic steel which is overlapped and fixed on the lower clamping plate; simultaneously, the pole core is arranged to comprise a ring-shaped pole core body which is overlapped and fixed on the first main magnetic steel, a ring-shaped pole core wall which protrudes and extends from the inner peripheral side of the pole core body, a pole core plate which is formed at the top end of the pole core wall, and two third through holes which penetrate through the pole core plate; therefore, the conductive piece can sequentially pass through the first through hole, the second through hole and the third through hole from the bottom of the magnetic circuit system to reach the lower part of the second vibrating diaphragm for generating high sound, the purpose of supplying power to the second voice coil is realized, and the winding process of the second voice coil is effectively adjusted to control the total length of extension of the two ends of the voice coil wire, so that the amplitude adjustment of the second vibrating system is realized; meanwhile, although the conducting piece also passes through the bottom of the magnetic circuit system and extends to the top of the magnetic circuit system, the middle of the first main magnetic steel does not need to be hollowed out integrally due to giving way to the conducting piece, and the conducting piece passes through the two second through holes, so that the part of the first main magnetic steel, which is positioned between the two second through holes, is reserved, the size of the first main magnetic steel is increased as much as possible, and the magnetic potential of the magnetic circuit system is effectively improved; and the protruding structure formed by the pole core wall and the pole core plate on the pole core enables the pole core to be integral without hollowing, and the conductive piece passes through the two third through holes arranged on the pole core plate, so that the part of the pole core between the two third through holes is reserved, the loss of magnetic force lines is greatly reduced, and the acoustic performance of the sounding device is better.
While the invention has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the invention.
Claims (9)
1. A sound emitting device, the sound emitting device comprising:
a first basin stand;
the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second vibrating diaphragm, wherein the outer periphery of the first vibrating diaphragm is fixed on the first basin frame;
the magnetic circuit system is fixed on the first basin frame, a first magnetic gap and a second magnetic gap are formed in one side, close to the first vibration system, of the magnetic circuit system, and the first magnetic gap surrounds the second magnetic gap; the first voice coil is inserted and suspended in the first magnetic gap;
the second basin frame is fixed at the top of the magnetic circuit system;
the second vibration system comprises a second vibrating diaphragm and a second voice coil, the outer periphery of the second vibrating diaphragm is fixed on one side, far away from the magnetic circuit system, of the second basin frame, the second voice coil drives the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted and arranged in the second magnetic gap in a suspending manner; the method comprises the steps of,
the conductive piece penetrates through the magnetic circuit system from the bottom of the magnetic circuit system, extends to the lower part of the second vibrating diaphragm and is electrically connected with the second voice coil; the magnetic circuit system is characterized by comprising:
the lower clamping plate is provided with a first through hole penetrating through the lower clamping plate;
the first main magnetic steel is overlapped and fixed on the lower clamping plate and is provided with two second through holes penetrating through the first main magnetic steel;
the auxiliary magnetic steel surrounds the first main magnetic steel and forms the first magnetic gap with the first main magnetic steel at intervals;
the pole core comprises a ring-shaped pole core body which is fixedly overlapped with the first main magnetic steel, a ring-shaped pole core wall which is bent and extended from the inner periphery of the pole core body to the direction close to the second vibrating diaphragm, a pole core plate which is formed at the top end of the pole core wall, and two third through holes which penetrate through the pole core plate;
the second main magnetic steel is overlapped and fixed on the pole core body, the second main magnetic steel is arranged around the pole core wall and forms a second magnetic gap with the pole core wall at intervals, and the second basin stand is supported and fixed on the top of the second main magnetic steel; the method comprises the steps of,
the upper clamping plate is fixedly overlapped with the auxiliary magnetic steel and fixedly connected with the first basin frame;
the conductive piece comprises an external conductive disc, two extending walls, two connecting walls and two connecting walls, wherein the external conductive disc is abutted to the bottom of the first main magnetic steel, the two extending walls are bent and extended from the opposite ends of the external conductive disc and sequentially penetrate through the two second through holes and the two third through holes respectively, the two connecting walls are bent and extended from the two extending walls respectively and fixed to the top end of the pole core plate at intervals, the two connecting walls are used as bonding pads, and the positive electrode end and the negative electrode end of the second voice coil are electrically connected to the two connecting walls respectively.
2. The sound generating device of claim 1, wherein two second through holes are disposed opposite to two third through holes, respectively, and orthographic projections of the second through holes and the third through holes downward along the vibration direction of the second diaphragm are completely located in the range of the first through holes.
3. The sound generating device as claimed in claim 1, wherein the magnetic circuit system further comprises an annular auxiliary pole core which is overlapped on one side of the second main magnetic steel far away from the pole core body, and the inner peripheral side of the second basin stand is fixedly connected with the outer peripheral side of the auxiliary pole core.
4. The sound generating device as recited in claim 1, wherein the first diaphragm comprises a first annular ring, a second annular ring disposed at an interval inside the first ring, and a first annular vibrating portion bent and extended from an inner periphery of the first ring and connected to an outer periphery of the second ring, the outer periphery of the first folding ring is fixed on the first basin frame, and the inner periphery of the second folding ring is fixed on one side, far away from the first main magnetic steel, of the second main magnetic steel; the first voice coil is fixed on one side of the first vibration part, which is close to the magnetic circuit system.
5. The sound emitting device of claim 4 wherein the inner periphery of the second ring is sandwiched between the second frame and the second primary magnetic steel.
6. The sound emitting device of claim 5, wherein the first vibration system further comprises a first skeleton and an elastic support assembly, the first skeleton comprising a skeleton body in the shape of a ring for serving as the first vibration portion and a skeleton securing portion extending by bending downward from an outer peripheral edge of the skeleton body; one end of the elastic supporting component is fixed to the first basin frame, and the other end of the elastic supporting component is fixed to the framework fixing portion.
7. The sound generating device as claimed in claim 1, wherein the second diaphragm comprises a second vibrating portion, a third ring extending outward from an outer periphery of the second vibrating portion and having a ring shape, and a dome covering the second vibrating portion, the outer periphery of the third ring being fixed to a side of the second frame away from the second main magnetic steel, and the second voice coil being fixed to the second vibrating portion.
8. The sound generating device as recited in claim 7, wherein the second diaphragm further comprises an auxiliary dome which is ring-shaped and is fixed to a side of the second vibration part near the magnetic circuit system; the ball top is located one side of the second vibration part far away from the magnetic circuit system, and the second voice coil is fixed on one side of the auxiliary ball top close to the magnetic circuit system.
9. The sound emitting device of claim 1, further comprising a dust cover comprising a cover body having a ring shape and fixed to a periphery of the lower plate, cover walls bent and extended from opposite sides of the cover body, and a plurality of air holes penetrating the cover walls, the cover walls being fixedly connected to the first frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311319334.0A CN117082416B (en) | 2023-10-12 | 2023-10-12 | Sounding device |
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| CN202311319334.0A CN117082416B (en) | 2023-10-12 | 2023-10-12 | Sounding device |
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| CN117082416A true CN117082416A (en) | 2023-11-17 |
| CN117082416B CN117082416B (en) | 2024-01-05 |
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| CN117915249A (en) * | 2024-03-20 | 2024-04-19 | 瑞声光电科技(常州)有限公司 | Sounding device |
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| WO2022067985A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
| CN115396792A (en) * | 2022-08-30 | 2022-11-25 | 瑞声光电科技(常州)有限公司 | Vibration sounding device |
| CN218416661U (en) * | 2022-08-30 | 2023-01-31 | 瑞声光电科技(常州)有限公司 | Sound production device |
| CN115914902A (en) * | 2022-12-19 | 2023-04-04 | 瑞声科技（南京）有限公司 | Multifunctional sounding device |
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| WO2022067985A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
| CN115396792A (en) * | 2022-08-30 | 2022-11-25 | 瑞声光电科技(常州)有限公司 | Vibration sounding device |
| CN218416661U (en) * | 2022-08-30 | 2023-01-31 | 瑞声光电科技(常州)有限公司 | Sound production device |
| CN115914902A (en) * | 2022-12-19 | 2023-04-04 | 瑞声科技（南京）有限公司 | Multifunctional sounding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117915249A (en) * | 2024-03-20 | 2024-04-19 | 瑞声光电科技(常州)有限公司 | Sounding device |
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| CN117082416B (en) | 2024-01-05 |
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