CN114554369A - Sound production device and electronic equipment - Google Patents
Sound production device and electronic equipment Download PDFInfo
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- CN114554369A CN114554369A CN202111682696.7A CN202111682696A CN114554369A CN 114554369 A CN114554369 A CN 114554369A CN 202111682696 A CN202111682696 A CN 202111682696A CN 114554369 A CN114554369 A CN 114554369A
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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
- H04R9/025—Magnetic circuit
- H04R9/027—Air gaps using a magnetic fluid
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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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- Acoustics & Sound (AREA)
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a sound generating device and electronic equipment, wherein the sound generating device comprises a shell, a first vibration system, a second vibration system and a magnetic circuit system, and the first vibration system comprises a first vibrating diaphragm and a first voice coil. The second vibration system comprises a second diaphragm and two second voice coils. The magnetic circuit system includes a first center magnet, two second center magnets, a first yoke plate, and a second yoke plate. The two second central magnets are respectively arranged at two opposite sides of the first central magnet. The first magnetic gap for the first voice coil to extend into is formed on the peripheral side of the first central magnet, and the first central magnet is connected to the second yoke plate. The peripheral side of the second central magnet forms a second magnetic gap for the second voice coil to extend into, and the second central magnet is connected with the first yoke plate. The first central magnet and the second central magnet are flatly arranged between the first yoke plate and the second yoke plate, and at least one of the first yoke plate and the second yoke plate is connected with the shell. According to the technical scheme, the thickness of the sound generating device can be reduced while double-sided sound generation is realized.
Description
The present invention claims priority from chinese patent application No. 202110358638.2 entitled "sound emitting device and electronic device" filed on 4/1/2021, the contents of which are incorporated herein by reference.
Technical Field
The present invention relates to the field of acoustic energy conversion technologies, and in particular, to a sound generating device and an electronic apparatus.
Background
In the current double-sided sound production device, a support plate is usually used to support the central magnetic circuit assembly, that is, a central magnet is respectively disposed at two opposite sides of the support plate, a magnetic gap is formed at the periphery of each central magnet, and the voice coils at two sides respectively extend into the two magnetic gaps. However, in such an arrangement, in order to ensure that the depth of each magnetic gap can meet the requirement of the operation of the corresponding voice coil, the thickness of each central magnet needs to be relatively large, that is, in the double-sided sound production device, the thickness of one central magnet is increased, which results in the increase of the thickness of the double-sided sound production device, and is very unfavorable for the miniaturization of the product.
Disclosure of Invention
The invention mainly aims to provide a sound generating device, which aims to reduce the thickness of the sound generating device while realizing double-sided sound generation.
In order to achieve the above object, the present invention provides a sound generating device, including:
a housing;
the first vibration system comprises a first vibrating diaphragm and a first voice coil arranged on the first vibrating diaphragm;
the second vibration system comprises a second vibrating diaphragm and a second voice coil arranged on the second vibrating diaphragm; and the number of the first and second groups,
the magnetic circuit system comprises a first central magnet, a second central magnet, a first yoke plate and a second yoke plate, wherein the first yoke plate and the second yoke plate are magnetically conductive and are arranged between the first vibrating diaphragm and the second vibrating diaphragm in parallel; wherein the content of the first and second substances,
a first magnetic gap for the first voice coil to extend into is formed on the peripheral side of the first central magnet, a first through hole is formed in the position, corresponding to the first magnetic gap, of the first yoke plate, one side, deviating from the first vibrating diaphragm, of the first central magnet is connected to the second yoke plate, a second magnetic gap for the second voice coil to extend into is formed on the peripheral side of the second central magnet, a second through hole is formed in the position, corresponding to the second magnetic gap, of the second yoke plate, and one side, deviating from the second vibrating diaphragm, of the second central magnet is connected to the first yoke plate;
the first central magnet and the second central magnet are flatly arranged between the first yoke plate and the second yoke plate, and at least one of the first yoke plate and the second yoke plate is connected with the shell;
the magnetic circuit system comprises two second central magnets, the two second central magnets are respectively arranged on two opposite sides of the first central magnet, a second magnetic gap is formed on the peripheral side of each second central magnet, and the second vibration system is provided with a second voice coil corresponding to each second magnetic gap.
Optionally, the magnetic circuit system further includes a ring-shaped magnet that is provided around the outer periphery of the second central magnet and that is located between the first yoke plate and the second yoke plate, the second magnetic gap being formed between the ring-shaped magnet and the second central magnet.
Optionally, the ring magnet is spaced from the first central magnet, the first voice coil portion being located between the ring magnet and the first central magnet.
Optionally, the magnetic circuit system further includes two first side magnets, the two first side magnets are respectively disposed on two opposite sides of the first central magnet and are both spaced from the first central magnet, and a portion of the first magnetic gap is formed between the first side magnets and the first central magnet.
Optionally, the magnetic circuit system further includes a third yoke plate and a third central magnet, a side of the first central magnet facing away from the second yoke plate is connected to the third yoke plate, the first central magnet is annular, the third central magnet is disposed in the annular hole of the first central magnet and connected to the third yoke plate, a third magnetic gap is formed between the third central magnet and the first central magnet, the second vibration system further includes a third voice coil disposed on the second diaphragm, and the third voice coil at least partially extends into the third magnetic gap.
Optionally, the first vibration system includes a first centering support, the first centering support includes a first annular connecting portion, a first annular supporting portion located inside the first annular connecting portion, and a first elastic arm connecting the first annular connecting portion and the first annular supporting portion, the first annular connecting portion is connected to the housing, and the first annular supporting portion is connected to the first voice coil.
Optionally, the second vibration system includes a second centering branch piece, the second centering branch piece includes a second annular connecting portion, a second annular supporting portion located inside the second annular connecting portion, and a second elastic arm connected to the second annular connecting portion and the second annular supporting portion, the second annular connecting portion is connected to the housing, and the second annular supporting portion is connected to the second voice coil.
Optionally, the second centering and supporting piece further comprises a third annular supporting portion and a connecting arm, the third annular supporting portion is located on the inner side of the second annular supporting portion, the connecting arm is connected with the second annular supporting portion and the third annular supporting portion, and the third annular supporting portion is connected with the third voice coil.
Optionally, the casing includes two connection shells, the connection shell is the both ends opening setting, two the open end of connection shell is connected, at least one of first yoke plate and the second yoke plate with connect the shell and be connected.
Optionally, the second yoke plate is provided with a first pressure relief hole, and the first pressure relief hole is communicated with spaces on two sides of the second yoke plate; and/or the shell is provided with a second pressure relief hole which is communicated with the inner cavity of the shell.
The invention also provides electronic equipment, which comprises the sound generating device; and
the sound-producing device comprises a shell, a sound-producing mechanism and a sound-emitting component, wherein the shell is provided with a mounting cavity and two sound-emitting parts, the sound-producing mechanism divides the mounting cavity into two sound-emitting cavities, a first vibrating diaphragm of the sound-producing mechanism is communicated with one of the sound-emitting parts through one of the sound-emitting cavities, and a second vibrating diaphragm of the sound-producing mechanism is communicated with the other sound-emitting part through the other sound-emitting cavity;
the electronic equipment is provided with a play mode and an earphone mode, in the play mode, a first vibration system and a second vibration system of the sound generating device radiate sound waves with the same phase outwards through the corresponding sound emitting parts, and in the earphone mode, the first vibration system and the second vibration system radiate sound waves with opposite phases outwards through the corresponding sound emitting parts.
In the technical scheme of the invention, the magnetic circuit system comprises a first central magnet, a second central magnet, a first yoke plate and a second yoke plate, wherein the first yoke plate and the second yoke plate are arranged between a first vibrating diaphragm and a second vibrating diaphragm in parallel, a first magnetic gap for a first voice coil to extend into is formed on the peripheral side of the first central magnet, one side of the first central magnet, which is deviated from the first vibrating diaphragm, is connected to the second yoke plate, a second magnetic gap for a second voice coil to extend into is formed on the peripheral side of the second central magnet, and one side of the second central magnet, which is deviated from the second vibrating diaphragm, is connected to the first yoke plate. By connecting at least one of the first yoke plate and the second yoke plate to the housing, the first center magnet and the second center magnet can be fixed in the housing. And through making first central magnet and second central magnet be the tiling setting between first yoke plate and second yoke plate, avoided the condition that first central magnet and second central magnet range upon range of setting, also avoided the condition in the direction of arranging of first vibrating diaphragm and second vibrating diaphragm sharing magnetic gap of first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil. Compared with the mode that the first central magnet and the second central magnet are stacked, the double-sided sound production device has the advantages that the thickness of the magnetic circuit system can be reduced while double-sided sound production is achieved, and further the thickness of the sound production device can be reduced. In addition, the second vibration system is equipped with two second voice coils, and two second voice coils divide the double-phase offside of locating first voice coil loudspeaker voice coil, can guarantee that second vibrating diaphragm atress is even, can effectual suppression cut apart the vibration, drives the vibration of second vibrating diaphragm through two second voice coils moreover, can improve electro-acoustic conversion efficiency, provides higher sound pressure level, does benefit to and improves the loudness of making a sound.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an exploded view of an embodiment of the sound generator of the present invention;
FIG. 2 is an exploded view of a portion of the magnetic circuit system of FIG. 1;
FIG. 3 is a sectional view of the assembled sound generator of FIG. 1;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is a schematic structural view of the first stiffener shown in FIG. 1;
FIG. 6 is a schematic structural view of the second centering slice in FIG. 1;
fig. 7 is an exploded view of the housing of fig. 1.
FIG. 8 is a schematic structural diagram of an electronic device according to an embodiment of the invention;
fig. 9 is an enlarged view at B in fig. 8.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a sound generating device, which is used for electronic equipment, wherein the electronic equipment can be a mobile phone, an intelligent watch, a notebook computer or a tablet computer and the like.
In an embodiment of the present invention, please refer to fig. 1 to fig. 4 in combination, the sound generating apparatus includes a housing 10, a first vibration system 30, a second vibration system 40, and a magnetic circuit system 20, wherein the first vibration system 30 includes a first diaphragm 31 and a first voice coil 32 disposed on the first diaphragm 31. The second vibration system 40 includes a second diaphragm 41 and a second voice coil 42 provided to the second diaphragm 41. The magnetic circuit system 20 includes a first central magnet 204, a second central magnet 205, a first yoke plate 21 and a second yoke plate 22 having magnetic permeability, and the first yoke plate 21 and the second yoke plate 22 are disposed in parallel between the first diaphragm 31 and the second diaphragm 41.
That is, the first yoke plate 21 and the second yoke plate 22 both have magnetic permeability, the peripheral side of the first central magnet 204 forms a first magnetic gap 201 into which the first voice coil 32 extends, and the side of the first central magnet 204 away from the first diaphragm 31 is connected to the second yoke plate 22, the peripheral side of the second central magnet 205 forms a second magnetic gap 202 into which the second voice coil 42 extends, and the side of the second central magnet 205 away from the second diaphragm 41 is connected to the first yoke plate 21. The first central magnet 204 and the second central magnet 205 are disposed flatly between the first yoke plate 21 and the second yoke plate 22, and at least one of the first yoke plate 21 and the second yoke plate 22 is connected to the housing 10.
In the present embodiment, the magnetic circuit system 20 is disposed between the first diaphragm 31 and the second diaphragm 41, the first yoke plate 21 faces the first diaphragm 31, the first voice coil 32 extends into the first magnetic gap 201 through the first yoke plate 21, the second yoke plate 22 faces the second diaphragm 41, and the second voice coil 42 extends into the second magnetic gap 202 through the second yoke plate 22. The first central magnet 204 and the second central magnet 205 are disposed flatly between the first yoke plate 21 and the second yoke plate 22, which means that the first central magnet 204 and the second central magnet 205 are disposed non-laminated in the arrangement direction of the first yoke plate 21 and the second yoke plate 22. That is, a projection plane is defined, which is perpendicular to the first yoke plate 21 and the second yoke plate 22, and when the arrangement direction of the first central magnet 204 and the second central magnet 205 is taken as a projection direction, orthographic projections of the first central magnet 204 and the second central magnet 205 on the projection plane at least partially overlap. For example, the first central magnet 204 and the second central magnet 205 may be arranged at intervals in a direction perpendicular to the arrangement direction of the first diaphragm 31 and the second diaphragm 41. Or one of the first central magnet 204 and the second central magnet 205 is annular and is arranged around the outer periphery of the other. The first yoke plate 21 and the second yoke plate 22 are mainly used for fixing the magnetic circuit system 20.
The first yoke plate 21 is provided with a first through hole 211 corresponding to the first magnetic gap 201, the first voice coil 32 passes through the first through hole 211 and extends into the first magnetic gap 201, the second yoke plate 22 is provided with a second through hole 221 corresponding to the first magnetic gap 201, and the second voice coil 42 passes through the second through hole 221 and extends into the second magnetic gap 202. That is, the size of the first through hole 211 is substantially equivalent to the outer size of the first magnetic gap 201, and the size of the second through hole 221 is substantially equivalent to the size of the second magnetic gap 202, for example, in an embodiment where the ring body 208 is disposed, the size of the second through hole 221 is equivalent to the ring hole size of the ring body 208. So as to ensure that the first yoke plate 21 and the second yoke plate 22 can play a better role of magnetic conduction. Thus, the first yoke plate 21 and the second yoke plate 22 can be used as magnetic conductive plates of the magnetic circuit system 20, so that no additional magnetic conductive plate is required to be arranged in the magnetic circuit system 20, which is beneficial to further reducing the thickness of the sound generating device. The number of magnetic conduction plates of the sounding device can be reduced, the structure of the sounding device can be simplified, and the assembling procedures can be reduced.
The first voice coil 32 and the second voice coil 42 are both annular voice coils, which is equivalent to the first central magnet 204 at least partially located inside the first voice coil 32, and the second central magnet 205 at least partially located inside the second voice coil 42. When the first magnetic gap 201 is formed on the peripheral side of the first center magnet 204, an effective magnetic field (which means a magnetic field capable of effectively driving the first voice coil 32 to move) may be formed at each position in the peripheral direction of the first center magnet 204, or an effective magnetic field may be formed at a partial position in the peripheral direction of the first center magnet 204, for example, effective magnetic fields may be formed at opposite sides of the first center magnet 204. Wherein, an electric signal may be inputted to the first voice coil 32 and the second voice coil 42, respectively. The first vibration system 30 and the second vibration system 40 may be vibrated separately or simultaneously.
In the technical solution of the present invention, the magnetic circuit system 20 includes a first central magnet 204, a second central magnet 205, a first yoke plate 21 and a second yoke plate 22, the first yoke plate 21 and the second yoke plate 22 are disposed in parallel between the first diaphragm 31 and the second diaphragm 41, a first magnetic gap 201 for the first voice coil 32 to extend into is formed on the peripheral side of the first central magnet 204, one side of the first central magnet 204 departing from the first diaphragm 31 is connected to the second yoke plate 22, a second magnetic gap 202 for the second voice coil 42 to extend into is formed on the peripheral side of the second central magnet 205, and one side of the second central magnet 205 departing from the second diaphragm 41 is connected to the first yoke plate 21. By connecting at least one of the first yoke plate 21 and the second yoke plate 22 to the housing 10, the first center magnet 204 and the second center magnet 205 can be fixed in the housing 10. In addition, the first central magnet 204 and the second central magnet 205 are flatly disposed between the first yoke plate 21 and the second yoke plate 22, so that the situation that the first central magnet 204 and the second central magnet 205 are stacked is avoided, and the situation that the first voice coil 32 and the second voice coil 42 share a magnetic gap in the arrangement direction of the first diaphragm 31 and the second diaphragm 41 is also avoided. That is, compared with the way of stacking the first central magnet 204 and the second central magnet 205, the thickness of the magnetic circuit system 20 and thus the thickness of the sound generating device can be reduced while realizing double-sided sound generation.
So still make first voice coil 32 can independently be in first magnetic gap 201 to can make the interval of first magnetic gap 201 less, thereby can promote the magnetic field utilization ratio, promote the BL value (the force coefficient, the product of magnetic field intensity B (tesla) and voice coil wire length (meter)) that first voice coil 32 produced in first magnetic gap 201, can wholly promote product performance. And when promoting the magnetic field utilization ratio, can reduce the quality of first voice coil loudspeaker voice coil 32, be favorable to promoting the intermediate frequency loudness of product. Similarly, the second voice coil 42 can be independently located in the second magnetic gap 202, so that the distance between the second magnetic gaps 202 is smaller, thereby increasing the magnetic field utilization rate and increasing the BL value generated by the second voice coil 42 in the second magnetic gap 202. And when promoting the magnetic field utilization ratio, can reduce the quality of second voice coil 42, be favorable to promoting the intermediate frequency loudness of product.
In the present embodiment, the first yoke plate 21 and the second yoke plate 22 are both connected to the housing 10 to ensure the stability of the magnetic circuit system 20. Of course, in other embodiments, only the first yoke plate 21 may be connected to the housing 10, in this case, a connector may be disposed between the first central magnet 204 and the second central magnet 205, and the first central magnet 204 and the second central magnet 205 are both disposed at a distance from the connector, and two opposite sides of the connector are respectively connected to the first yoke plate 21 and the second yoke plate 22, so that when one of the first yoke plate 21 and the second yoke plate 22 is connected to the housing 10, the other one can also be fixed. The connecting piece can be a magnet, or the connecting piece has magnetic permeability, or the connecting piece is a non-magnet and does not have magnetic permeability.
In one embodiment, the magnetic circuit system 20 includes two second central magnets 205, the two second central magnets 205 are respectively disposed on two opposite sides of the first central magnet 204, a second magnetic gap 202 is formed on the peripheral side of each second central magnet 205, and the second vibration system 40 is provided with a second voice coil 42 corresponding to each second magnetic gap 202. That is, the second vibration system 40 is provided with two second voice coils 42, and the two second voice coils 42 are independently disposed in one second magnetic gap 202, and the two second central magnets 205 are respectively disposed on two opposite sides of the first central magnet 204, so that the second diaphragm 41 can be uniformly stressed, and the split vibration can be effectively suppressed. And drive second vibrating diaphragm 41 vibration through two second voice coils 42, can improve electroacoustic conversion efficiency, provide higher sound pressure level, do benefit to and improve the loudness of making a sound.
Of course, in other embodiments, only one first central magnet 204 and one second central magnet 205 may be provided, or two first central magnets 204 and two second central magnets 205 may be provided, or two first central magnets 204 and three second central magnets 205, with any one first central magnet 204 being located between two adjacent second central magnets 205, and so on. In addition, in other embodiments, the first central magnet 204 may be annular and the second central magnet 205 may be disposed within the annular ring of the first central magnet 204, or the second central magnet 205 may be annular and the first central magnet 204 may be disposed within the annular ring of the second central magnet 205.
In one embodiment, the magnetic circuit system 20 further includes a ring magnet 208, the ring magnet 208 is disposed around the outer periphery of the second central magnet 205, the ring magnet 208 is located between the first yoke plate 21 and the second yoke plate 22, and the second magnetic gap 202 is formed between the ring magnet 208 and the second central magnet 205. At least one of the ring magnet 208 and the second central magnet 205 is a magnet, i.e., at least one of the ring magnet 208 and the second central magnet 205 is a magnet and the other has magnetic permeability, and the ring magnet 208 is attached between the first yoke plate 21 and the second yoke plate 22. In this embodiment, the second center magnet 205 and the ring magnet 208 are both magnets. By arranging the ring-shaped magnet 208, an effective magnetic field can be ensured to be formed around the second central magnet 205, the utilization rate of the internal space of the sound generating device can be improved, and the efficiency of a magnetic circuit is improved. Moreover, when the second central magnet 205 and the ring magnet 208 are both magnets, the magnetic field strength of the second magnetic gap 202 can be increased, and thus the vibration effect of the second vibration system 40 can be increased. The ring magnet 208 may have a circular shape, or a polygonal shape such as a quadrangle, a pentagon, a hexagon, and the like.
In the embodiment where two second central magnets 205 are provided, an annular magnet 208 is provided on the outer periphery of each second central magnet 205. When the ring magnet 208 is a magnet, two magnetic poles of the ring magnet 208 may be distributed along the arrangement direction of the first diaphragm 31 and the second diaphragm 41, and opposite magnetic poles are arranged on the sides of the second central magnet 205 and the ring magnet 208 facing the first diaphragm 31. Or the two magnetic poles of the annular magnet 208 may be arranged inside and outside, and the sides of the second central magnet 205 and the annular magnet 208 facing the first diaphragm 31 are opposite magnetic poles. Of course, in other embodiments, a bar magnet may be disposed on the outer periphery of the second central magnet 205, or when the second central magnet 205 is disposed as a magnet, the outer periphery of the second central magnet 205 may not be disposed with a magnet or a magnetic conductor.
In one embodiment, the ring magnet 208 is spaced from the first center magnet 204, and the first voice coil 32 is partially positioned between the ring magnet 208 and the first center magnet 204. In this embodiment, the first central magnet 204 and the annular magnet 208 are both magnets, and the first central magnet 204 and the annular magnet 208 are arranged with odd-shaped magnetic poles therebetween, so that magnetic lines of force can be directed from the first central magnet 204 to the annular magnet 208, or magnetic lines of force can be directed from the annular magnet 208 to the first central magnet 204. Therefore, the annular magnet 208 and the first central magnet 204 can be utilized to form part of the first magnetic gap 201, the utilization rate of the inner space of the sound generating device can be improved, the efficiency of a magnetic circuit is improved, and the structure of the sound generating device is more compact. Optionally, the first central magnet 204 and the ring magnet 208 are both square (may be rectangular or square) to reduce the gap between the first central magnet 204 and the ring magnet 208, so that the magnetic circuit system 20 is more compact. Of course, in embodiments thereof, it is also possible to make the first central magnet 204 a magnet and the ring magnet 208 a magnetic permeability, or to make the first central magnet 204 a magnetic permeability and the ring magnet 208 a magnet.
In one embodiment, the magnetic circuit system 20 further includes a third yoke plate 23 and a third central magnet 206, a side of the first central magnet 204 facing away from the second yoke plate 22 is connected to the third yoke plate 23, the first central magnet 204 is annular, the third central magnet 206 is disposed in the annular hole of the first central magnet 204 and is connected to the third yoke plate 23, a third magnetic gap 203 is formed between the third central magnet 206 and the first central magnet 204, the second vibration system 40 further includes a third voice coil 43 disposed on the second diaphragm 41, and the third voice coil 43 at least partially extends into the third magnetic gap 203.
Specifically, at least one of the first central magnet 204 and the third central magnet 206 is a magnet, the third voice coil 43 is an annular voice coil, the size of the third yoke plate 23 is not larger than the inner diameter of the first voice coil 32, the third yoke plate 23 does not interfere with the first voice coil 32, and by connecting the third yoke plate 23 to the side of the first central magnet 204 away from the second yoke plate 22, it is possible to fix the third yoke plate 23 and prevent the third yoke plate 23 from interfering with the fixation of the first voice coil 32. When the third central magnet 206 is attached to the third yoke plate 23, the third central magnet 206 can be fixed, and the third voice coil 43 can protrude into the third magnetic gap 203 from the side of the third central magnet 206 away from the third yoke plate 23. This prevents the third yoke plate 23 from occupying the space of the third magnetic gap 203 and also prevents the third voice coil 43 from interfering with the third yoke plate 23. By providing the third center magnet 206 and the third voice coil 43, the vibration performance of the second vibration system 40 can be further improved, and the split vibration can be effectively suppressed.
In the embodiment where the third voice coil 43 is provided, a third through hole is further provided in the second yoke 22 plate at a position corresponding to the third magnetic gap 203, and the third voice coil 43 extends into the third magnetic gap 203 through the third through hole. Of course, in other embodiments, a magnetic conductive plate may be additionally provided. In one embodiment, the third yoke plate 23 has magnetic permeability.
To improve the efficiency of the magnetic circuit, in one embodiment, the first central magnet 204, the second central magnet 205, the ring magnet 208, and the third central magnet 206 are all magnets. Taking the arrangement of the magnetic poles of the first central magnet 204 as an example, two magnetic poles of the first central magnet 204 may be distributed along the arrangement direction of the first diaphragm 31 and the second diaphragm 41, at this time, the sides of the first central magnet 204 and the third central magnet 206 facing the first diaphragm 31 may be opposite magnetic poles, the sides of the first central magnet 204 and the ring magnet 208 facing the first diaphragm 31 may be opposite magnetic poles, and the sides of the ring magnet 208 and the second central magnet 205 facing the first diaphragm 31 may be opposite magnetic poles. Alternatively, one of the magnetic poles of the first central magnet 204 may be arranged around the other magnetic pole (that is, when the first central magnet 204 is annular, the two magnetic poles of the first central magnet 204 are distributed along the direction from the inner ring surface to the outer ring surface), and in this case, the first central magnet 204 and the third central magnet 206 may be arranged to be opposite in magnetic polarity, the first central magnet 204 and the annular magnet 208 may be arranged to be opposite in magnetic polarity, and the annular magnet 208 and the second central magnet 205 may be arranged to be opposite in magnetic polarity. Optionally, each of the first central magnet 204, the second central magnet 205, the ring magnet 208 and the third central magnet 206 may be square (which may be rectangular or square) to reduce the gap between the adjacent magnets, so that the magnetic circuit system 20 is more compact.
In one embodiment, the surface of the second central magnet 205 facing away from the first yoke plate 21 is provided with a first central magnetic conductive plate. The side of the third central magnet 206 facing away from the third yoke plate 23 is provided with a second central magnetically permeable plate.
Referring to fig. 1 and fig. 5, in order to reduce the possibility of polarization of the first vibration system 30, in an embodiment, the first vibration system 30 includes a first stiffener 33, and the first stiffener 33 connects the housing 10 and the first voice coil 32. Alternatively, in an embodiment, the first centering leg 33 includes a first annular connecting portion 331, a first annular supporting portion 332 located inside the first annular connecting portion 331, and a first elastic arm 333 connecting the first annular connecting portion 331 and the first annular supporting portion 332, the first annular connecting portion 331 is connected to the casing 10, and the first annular supporting portion 332 is connected to the first voice coil 32. Specifically, the first annular connecting portion 331 is provided between the end surface of the casing 10 and the first diaphragm 31, and the first annular supporting portion 332 is provided inside the first annular connecting portion 331. With this arrangement, the connection area of the first annular connecting portion 331 and the housing 10 is large, and the connection stability of the first stiffener 33 can be increased. But also makes the first stiffener 33 as a whole, enabling a reduction in the number of stiffeners. Of course, in other embodiments, there may be a plurality of first yokes 33, and each first yoke 33 is connected to one first voice coil 32.
Referring to fig. 1 and fig. 6, in order to reduce the possibility of the second vibration system 40 deflecting, in an embodiment, the first vibration system 30 includes a second damper 44, and the second damper 44 connects the housing 10 and the second voice coil 42. Optionally, in an embodiment, the second centering branch 44 includes a second annular connection portion 441, a second annular support portion 442 located inside the second annular connection portion 441, and a second elastic arm 445 connecting the second annular connection portion 441 and the second annular support portion 442, the second annular connection portion 441 is connected to the housing 10, and the second annular support portion 442 is connected to the second voice coil 42.
The second annular connecting portion 441 is disposed between an end surface of the casing 10 facing away from the first diaphragm 31 and the second diaphragm 41, and the second annular supporting portion 442 is located on an inner side of the second annular connecting portion 441. With this arrangement, the connection area between the second annular connection portion 441 and the housing 10 is large, and the connection stability of the second centering branch piece 44 can be increased. But also makes the second centring disk 44 integral, enabling a reduction in the number of centring disks. Of course, in other embodiments, there may be a plurality of second spider 44, and each second spider 44 is connected to one second voice coil 42.
In one embodiment, two ends of the second annular supporting portion 442 of the second centering branch 44 are respectively formed with a supporting ring portion 443, and each supporting ring portion 443 is connected to a second voice coil 42. Specifically, two ends of the second annular support portion 442 are respectively provided with a support rib 444, two ends of the support rib 444 are respectively connected to two long sides of the second annular support portion 442, and each support rib 444 is correspondingly spaced from a short side of an end of the second annular support portion 442, so as to form a support ring portion 443. Therefore, each second voice coil 42 is correspondingly connected with one support ring portion 443, so that the connection area between each second voice coil 42 and the second annular support portion 442 is ensured to be large, and the connection stability of the second voice coil 42 is improved. And two second voice coils 42 are connected through one second centering branch 44, so that the vibration of the two second voice coils 42 is consistent, and the split vibration can be effectively inhibited.
In one embodiment, the second stiffener 44 further includes a third annular support portion 446 and a connecting arm 447, the third annular support portion 446 is located inside the second annular support portion 442 and between the two support ring portions 443, the connecting arm 447 connects the second annular support portion 442 and the third annular support portion 446, and the third annular support portion 446 is connected to the third voice coil 43 of the second vibration system 40. That is, the third annular support portion 446 is disposed on the inner side of the second annular support portion 442 corresponding to the third voice coil 43 for fixing the third voice coil 43, so that the second centering branch 44 is connected to the two second voice coils 42 and the third voice coil 43 at the same time, and the vibrations of the two second voice coils 42 and the third voice coil 43 are relatively consistent, thereby effectively suppressing the split vibration. Wherein the connecting arm 447 can be rigid or resilient.
Referring to fig. 2, in an embodiment, the magnetic circuit system 20 further includes two first side magnets 24, the two first side magnets 24 are respectively disposed on two opposite sides of the first central magnet 204 and are both spaced from the first central magnet 204, and a portion of the first magnetic gap 201 is formed between the first side magnets 24 and the first central magnet 204. By providing one first side magnet 24 on each of the opposite sides of the first center magnet 204, the magnetic induction of the first magnetic gap 201 can be increased to improve the vibration performance of the first vibration system 30.
Referring to fig. 1 and fig. 7, in an embodiment, the second yoke plate 22 is provided with a first pressure relief hole 222, and the first pressure relief hole 222 is communicated with spaces on two sides of the second yoke plate 22 to balance air pressure in the spaces on two sides of the second yoke plate 22. In one embodiment, the casing 10 is provided with a second pressure relief hole 12, and the second pressure relief hole 12 is communicated with an inner cavity of the casing 10 to balance the air pressure inside the sound generating device. In one embodiment, the second pressure relief hole 12 communicates with the space on one side of the second side plate, so that the first pressure relief hole 222 and the second pressure relief hole 12 can communicate with each other, thereby better balancing the air pressure between the spaces inside the sound generating device.
Referring to fig. 7, in an embodiment, the housing 10 includes two connecting shells 11, the two ends of the connecting shells 11 are open, and the open ends of the two connecting shells 11 are connected. That is, the two connecting shells 11 are separately arranged, and during assembly, the open ends of the two connecting shells 11 are connected, so that during assembly, the magnetic circuit system 20 can be partially mounted on the connecting shells 11, and then the two connecting shells 11 are connected, thereby facilitating the assembly of the housing 10 and the magnetic circuit system 20. For example, but not limited to, the first yoke plate 21 may be fixed to one of the coupling cases 11, the second center magnet 205 may be fixed to the first yoke plate 21, the second yoke plate 22 may be fixed to the other coupling case 11, and the two coupling cases 11 may be fixed after the first center magnet 204 is fixed to the second yoke plate 22. In one embodiment, both connecting shells 11 are provided with a second pressure relief hole 12. In one embodiment, one of the connecting shells 11 is integrally formed with the first yoke plate 21, and the other connecting shell 11 is integrally formed with the second yoke plate 22. Therefore, the structural strength of the shell 10 can be improved through the first yoke plate 21 and the second yoke plate 22, the stability of the shell 10 and the magnetic circuit system 20 can be improved, the number of parts of the sound generating device in the assembling process can be reduced, and the assembling process can be reduced. Of course, in other embodiments, the housing 10 and the yoke plate may be bonded or fixed together by screws or the like. Additionally, in other embodiments, the housing 10 may be a unitary structure.
Referring to fig. 1 and fig. 4, in an embodiment, the annular magnet 208 is partially sandwiched between the two connecting shells 11, that is, the annular magnet 208 is partially sandwiched between the two connecting shells 11 near the outer peripheral surface of the casing 10, so that the distance between the annular magnet 208 and the outer peripheral surface of the casing 10 can be reduced, which is beneficial to reducing the length or width of the sound generating device.
Referring to fig. 1, in an embodiment, Sd (effective vibration radiation area) of the first vibration system 30 and the second vibration system 40 is substantially equivalent, so that parameters of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so as to reduce vibration of the sound generating device caused by operation of the first vibration system 30 and the second vibration system 40, and achieve a better vibration damping effect. In an embodiment, the BL values of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so that the parameters of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so as to reduce the vibration of the sound generating device caused by the operation of the first vibration system 30 and the second vibration system 40, and achieve a better vibration damping effect. In an embodiment, the Mms (equivalent mass) of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so that the parameters of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so as to reduce the vibration of the sound generating device caused by the operation of the first vibration system 30 and the second vibration system 40, and achieve a better vibration damping effect. In an embodiment, Cms (compliance) of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so that parameters of the first vibration system 30 and the second vibration system 40 are substantially equivalent, so as to reduce vibration of the sound generating device caused by operation of the first vibration system 30 and the second vibration system 40, and achieve a good vibration damping effect.
In an embodiment, Sd (effective vibration radiation area) of the first vibration system 30 and the second vibration system 40 is approximately equivalent, BL value of the first vibration system 30 and the second vibration system 40 is approximately equivalent, Mms (equivalent mass) of the first vibration system 30 and the second vibration system 40 is approximately equivalent, and Cms (compliance) of the first vibration system 30 and the second vibration system 40 is approximately equivalent, so that parameters of the first vibration system 30 and the second vibration system 40 are approximately equivalent, so as to reduce vibration of the sound generating device caused by operation of the first vibration system 30 and the second vibration system 40, and achieve a good vibration damping effect.
In one embodiment, the mass of the first vibration system 30 is substantially equivalent to that of the second vibration system 40, so as to reduce the vibration of the sound generating device caused by the operation of the first vibration system 30 and the second vibration system 40, thereby achieving a better vibration damping effect.
In one embodiment, the two first voice coils 32 of the first vibration system 30 are arranged in a central symmetry manner, so as to improve the balance of the first vibration system 30 and reduce the separation vibration. In one embodiment, the third voice coil 43 and the two first voice coils 32 of the first vibration system 30 are arranged in a central symmetry manner, so as to improve the balance of the first vibration system 30 and reduce the separation vibration. In one embodiment, the two second voice coils 42 of the second vibration system 40 are arranged in a central symmetry manner, so as to improve the balance of the second vibration system 40 and reduce the separation vibration.
The present invention further provides an electronic device, which includes a housing and a sound generating device, and the specific structure of the sound generating device refers to the above embodiments, and since the electronic device adopts all technical solutions of all the above embodiments, the electronic device at least has all beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. Wherein, the sound generating device is arranged in the shell. The electronic device can be a mobile phone, a smart watch, a tablet computer or a computer.
In one embodiment, referring to fig. 8 and 9, the housing 5 is provided with a mounting cavity 501 and two sound emitting portions 503, the sound generating device 1 divides the mounting cavity 501 into two sound emitting cavities 502, the first diaphragm 31 of the sound generating device 1 is communicated with one of the sound emitting portions 503 through one of the sound emitting cavities 502, and the second diaphragm 41 of the sound generating device 1 is communicated with the other sound emitting portion 503 through the other sound emitting cavity 502.
In this embodiment, the first diaphragm 31 of the sound generating apparatus 1 is communicated with one of the sound emitting cavities 502, and the second diaphragm 41 of the sound generating apparatus 1 is communicated with the other sound emitting cavity 502, which means that the space on the side where the first diaphragm 31 and the second diaphragm 41 depart from each other is respectively communicated with the two sound emitting cavities 502 in a one-to-one correspondence manner, so that when the diaphragms vibrate and generate sound, the sound can be transmitted from the sound emitting cavities 502 and the sound emitting portions 503 to the outside of the housing. The two sound emitting portions 503 are disposed at an interval on the housing, sound emitting directions of the two sound emitting portions 503 form an included angle or are opposite, and the two sound emitting portions 503 may be located on different sides or other positions of the electronic device, for example, when the electronic device is a smart watch, both the two sound emitting portions 503 may be disposed on the peripheral side of the electronic device.
The electronic apparatus has a play mode in which the first vibration system 30 and the second vibration system 40 of the sound generating apparatus 1 radiate sound waves of the same phase outward through the respective corresponding sound emitting portions 503, and an earpiece mode in which the first vibration system 30 and the second vibration system 40 radiate sound waves of opposite phases outward through the respective corresponding sound emitting portions 503. That is, in the play-out mode, the first diaphragm 31 and the second diaphragm 41 are controlled to vibrate simultaneously in opposite directions, so that the first vibration system 30 and the second vibration system 40 both radiate normal-phase sound waves outwards through the corresponding sound emitting portions 503, and the volume can be effectively increased, so that the sound generating device 1 can play a role of playing sound outside a loudspeaker. In the earpiece mode, the first diaphragm 31 and the second diaphragm 41 are controlled to vibrate simultaneously in the same direction, so that when one of the first vibration system 30 and the second vibration system 40 radiates the positive phase sound wave/the reverse phase sound wave outwards through the corresponding sound emitting part 503, the other one radiates the reverse phase sound wave/the positive phase sound wave outwards through the corresponding sound emitting part 503. When the electronic device is used for a call, one of the sound emitting portions 503 is close to the ear of the user, and the other sound emitting portion 503 is far away from the ear of the user relative to the sound emitting portion 503, so that an acoustic dipole effect can be formed for people around the user, specifically, the distance between the two sound emitting portions 503 is negligible, the distances from the two sound emitting portions 503 to the ears of the people around the user are close, and the sound waves with opposite phases of the first vibration system 30 and the second vibration system 40 reach the ears of the people around the user and are mutually cancelled, so that the purpose of reducing the sound leakage is achieved. For the user, the distance between the two sound outlet portions 503 and the ear of the user is relatively different, the condition of the dipole effect is not satisfied, the sound wave cancellation degree is small, and therefore the user can hear the sound with proper loudness.
According to the technical scheme, the mounting cavity 501 in the shell 5 is divided into two sound outlet cavities 502 through the sound generating device 1, the sound outlet parts 503 are arranged on the shell 5 corresponding to each sound outlet cavity 502, the first vibration system 30 and the second vibration system 40 of the sound generating device 1 are respectively in one-to-one correspondence with the two sound outlet cavities 502, and therefore sound can be generated through the two sound outlet parts 503. When a user uses the electronic device to talk, the electronic device can be set in an earphone mode, that is, one of the sound emitting portions 503 can be close to the ear, and the sound wave radiated outwards by the sound emitting portion 503 close to the ear is opposite in phase to the sound wave radiated outwards by the other sound emitting portion 503 by controlling the first vibration system 30 and the second vibration system 40, so that an acoustic dipole effect can be formed, and the sounds emitted by the two sound emitting portions 503 are mutually cancelled at the peripheral position of the user of the electronic device, thereby reducing the risk of sound leakage when the user uses the electronic device to talk, and realizing the privacy protection function when the electronic device talks. Moreover, since the first vibration system 30 and the second vibration system 40 can work independently, parameters such as signals and voltages of the first vibration system 30 and the second vibration system 40 can be adjusted at will, so as to achieve the best conversation and privacy protection effects. In addition, the electronic device may be set in the play mode, that is, the first vibration system 30 and the second vibration system 40 may be controlled to radiate sound waves with the same phase through the two sound emitting portions 503, so that the volume deficiency caused by the size of the sound emitting apparatus 1 may be compensated, the volume may be effectively increased, and the sound emitting portions 503 may be used as speakers to play sound outside.
In the following embodiments, the electronic device is taken as a mobile phone for illustration, but not limited thereto. The housing 5 has a front face 51, a rear face 52 and a top side 53, the front face 51 being provided with the display portion, the rear face 52 being disposed opposite the front face 51, the top side 53 being located between the rear face 52 and the front face 51.
In one embodiment, referring to fig. 9, in one embodiment, one sound emitting portion 503 is disposed at a connection position of the front surface 51 and the top surface 53, and the other sound emitting portion 503 is disposed at a connection position of the back surface 52 and the top surface 53. When one of the sound emitting parts 503 is arranged at the connection position of the front surface 51 and the top surface 53, it can be ensured that the coupling effect of the sound emitting part 503 and the ear part is good when a user communicates, so that the user can clearly listen to the sound emitted from the sound emitting part 503, and the communication listening effect of the user is improved. The occupied space of the sound emitting part 503 on the front surface 51 can be reduced, namely, the space of the front surface 51 occupied by the sound emitting part 503 for arranging the display part is reduced, the size of the display part is increased, and the mobile phone with the full screen is realized. By providing the other sound emitting portion 503 at the junction between the back surface 52 and the top surface 53, when the two sound emitting portions 503 are used as speakers to emit sound, the matching effect of the two sound emitting portions 503 can be improved, and the volume of the emitted sound can be improved. Therefore, the better conversation privacy protection function and the loudspeaker playing function can be achieved. Of course, in other embodiments, the sound emitting portion 503 relatively closer to the front surface 51 may also be disposed on the front surface 51, and the sound emitting portion 503 relatively closer to the back surface 52 may also be disposed on the back surface 52 or the top side 53.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A sound generating device, comprising:
a housing;
the first vibration system comprises a first vibrating diaphragm and a first voice coil arranged on the first vibrating diaphragm;
the second vibration system comprises a second vibrating diaphragm and a second voice coil arranged on the second vibrating diaphragm; and the number of the first and second groups,
the magnetic circuit system comprises a first central magnet, a second central magnet, a first yoke plate and a second yoke plate, wherein the first yoke plate and the second yoke plate have magnetic permeability, and are arranged between the first vibrating diaphragm and the second vibrating diaphragm in parallel; wherein the content of the first and second substances,
a first magnetic gap for the first voice coil to extend into is formed on the peripheral side of the first central magnet, a first through hole is formed in the position, corresponding to the first magnetic gap, of the first yoke plate, one side, deviating from the first vibrating diaphragm, of the first central magnet is connected to the second yoke plate, a second magnetic gap for the second voice coil to extend into is formed on the peripheral side of the second central magnet, a second through hole is formed in the position, corresponding to the second magnetic gap, of the second yoke plate, and one side, deviating from the second vibrating diaphragm, of the second central magnet is connected to the first yoke plate;
the first central magnet and the second central magnet are flatly arranged between the first yoke plate and the second yoke plate, and at least one of the first yoke plate and the second yoke plate is connected with the shell;
the magnetic circuit system comprises two second central magnets, the two second central magnets are respectively arranged on two opposite sides of the first central magnet, a second magnetic gap is formed on the peripheral side of each second central magnet, and the second vibration system is provided with a second voice coil corresponding to each second magnetic gap.
2. The sound-generating apparatus as claimed in claim 1, wherein said magnetic circuit system further comprises a ring-shaped magnet which is disposed around the outer periphery of said second central magnet and which is located between said first yoke plate and said second yoke plate, said ring-shaped magnet and said second central magnet forming said second magnetic gap therebetween.
3. The sound generating apparatus of claim 2, wherein said ring magnet is spaced from said first center magnet, said first voice coil portion being located between said ring magnet and said first center magnet.
4. The sound generating apparatus as claimed in claim 1, wherein said magnetic circuit system further comprises two first side magnets, said two first side magnets being disposed on opposite sides of said first central magnet and both being spaced from said first central magnet, said first side magnets and said first central magnet forming a portion of said first magnetic gap therebetween.
5. The sound generating apparatus as claimed in claim 1, wherein the magnetic circuit system further comprises a third yoke plate and a third central magnet, wherein a side of the first central magnet facing away from the second yoke plate is connected to the third yoke plate, the first central magnet is annular, the third central magnet is disposed in the annular hole of the first central magnet and connected to the third yoke plate, a third magnetic gap is formed between the third central magnet and the first central magnet, and the second vibration system further comprises a third voice coil disposed on the second diaphragm, and the third voice coil at least partially protrudes into the third magnetic gap.
6. The sound generating apparatus according to claim 1, wherein the first vibration system includes a first damper, the first damper including a first annular connecting portion, a first annular supporting portion located inside the first annular connecting portion, and a first elastic arm connecting the first annular connecting portion and the first annular supporting portion, the first annular connecting portion being connected to the housing, the first annular supporting portion being connected to the first voice coil; and/or the presence of a gas in the atmosphere,
the second vibration system comprises a second centering support piece, the second centering support piece comprises a second annular connecting portion, a second annular supporting portion and a second elastic arm, the second annular supporting portion is located on the inner side of the second annular connecting portion, the second elastic arm is connected with the second annular supporting portion, the second annular connecting portion is connected with the shell, and the second annular supporting portion is connected with the second voice coil.
7. The sound generating apparatus as claimed in claim 6, wherein the magnetic circuit system further comprises a third yoke plate and a third central magnet, wherein a side of the first central magnet facing away from the second yoke plate is connected to the third yoke plate, the first central magnet is annular, the third central magnet is disposed in the annular hole of the first central magnet and connected to the third yoke plate, a third magnetic gap is formed between the third central magnet and the first central magnet, and the second vibration system further comprises a third voice coil disposed on the second diaphragm, and the third voice coil at least partially protrudes into the third magnetic gap;
the second centering support piece further comprises a third annular supporting portion and a connecting arm, the third annular supporting portion is located on the inner side of the second annular supporting portion, the connecting arm is connected with the second annular supporting portion and the third annular supporting portion, and the third annular supporting portion is connected with the third voice coil.
8. The sound generating apparatus as claimed in claim 1, wherein said housing includes two connecting shells, said connecting shells are open at both ends, the open ends of said two connecting shells are connected, and at least one of said first yoke plate and said second yoke plate is connected to said connecting shells.
9. The sound generating apparatus as claimed in any one of claims 1 to 8, wherein said second yoke plate is provided with a first pressure relief hole communicating with spaces on both sides of said second yoke plate; and/or the shell is provided with a second pressure relief hole which is communicated with the inner cavity of the shell.
10. An electronic device, characterized by comprising the sound emitting apparatus according to any one of claims 1 to 9; and
the sound-producing device comprises a shell, a sound-producing mechanism and a sound-emitting component, wherein the shell is provided with a mounting cavity and two sound-emitting parts, the sound-producing mechanism divides the mounting cavity into two sound-emitting cavities, a first vibrating diaphragm of the sound-producing mechanism is communicated with one of the sound-emitting parts through one of the sound-emitting cavities, and a second vibrating diaphragm of the sound-producing mechanism is communicated with the other sound-emitting part through the other sound-emitting cavity;
the electronic equipment is provided with a play mode and an earphone mode, in the play mode, a first vibration system and a second vibration system of the sound generating device radiate sound waves with the same phase outwards through the corresponding sound emitting parts, and in the earphone mode, the first vibration system and the second vibration system radiate sound waves with opposite phases outwards through the corresponding sound emitting parts.
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|---|---|---|---|
| CN202110358638.2A CN113099365A (en) | 2021-04-01 | 2021-04-01 | Sound production device and electronic equipment |
| CN2021103586382 | 2021-04-01 |
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| CN114554369A true CN114554369A (en) | 2022-05-27 |
| CN114554369B CN114554369B (en) | 2023-11-21 |
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| CN202123434931.7U Active CN216775010U (en) | 2021-04-01 | 2021-12-30 | Sound production device and electronic equipment |
| CN202111680960.3A Active CN114554367B (en) | 2021-04-01 | 2021-12-30 | Sound producing device and electronic equipment |
| CN202111682696.7A Active CN114554369B (en) | 2021-04-01 | 2021-12-30 | Sound producing device and electronic equipment |
| CN202111680967.5A Active CN114554368B (en) | 2021-04-01 | 2021-12-30 | Sound producing device and electronic equipment |
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| CN202110358638.2A Pending CN113099365A (en) | 2021-04-01 | 2021-04-01 | Sound production device and electronic equipment |
| CN202123434931.7U Active CN216775010U (en) | 2021-04-01 | 2021-12-30 | Sound production device and electronic equipment |
| CN202111680960.3A Active CN114554367B (en) | 2021-04-01 | 2021-12-30 | Sound producing device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117440305A (en) * | 2023-12-21 | 2024-01-23 | 歌尔股份有限公司 | Electronic equipment |
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| CN113099365A (en) * | 2021-04-01 | 2021-07-09 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN214675664U (en) * | 2021-04-25 | 2021-11-09 | 常州阿木奇声学科技有限公司 | Horn type loudspeaker |
| CN113271526B (en) * | 2021-07-21 | 2021-11-26 | 共达电声股份有限公司 | Loudspeaker |
| CN116033318B (en) * | 2021-10-27 | 2023-12-08 | 华为终端有限公司 | Speaker and electronic equipment |
| CN219041924U (en) * | 2022-03-28 | 2023-05-16 | 华为技术有限公司 | Speaker module and electronic equipment |
| CN114979910B (en) * | 2022-07-29 | 2022-11-25 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN117459883B (en) * | 2023-12-21 | 2024-04-30 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
| CN117459882B (en) * | 2023-12-21 | 2024-04-30 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
| CN117440304B (en) * | 2023-12-21 | 2024-04-30 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
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| CN117440305B (en) * | 2023-12-21 | 2024-04-09 | 歌尔股份有限公司 | Electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114554368B (en) | 2024-02-09 |
| CN113099365A (en) | 2021-07-09 |
| WO2022206048A1 (en) | 2022-10-06 |
| CN114554367B (en) | 2023-10-03 |
| CN216775010U (en) | 2022-06-17 |
| CN114554369B (en) | 2023-11-21 |
| CN114554368A (en) | 2022-05-27 |
| CN114554367A (en) | 2022-05-27 |
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