CN114866921A - Sound production device and audio equipment - Google Patents
Sound production device and audio equipment Download PDFInfo
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- CN114866921A CN114866921A CN202210489051.XA CN202210489051A CN114866921A CN 114866921 A CN114866921 A CN 114866921A CN 202210489051 A CN202210489051 A CN 202210489051A CN 114866921 A CN114866921 A CN 114866921A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 230000005855 radiation Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 7
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- 238000000206 photolithography Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000005415 magnetization Effects 0.000 description 20
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
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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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Abstract
The invention discloses a sound production device and audio equipment, wherein the sound production device comprises a magnetic conduction plate, a first magnetic structure, a second magnetic structure, a bass vibration diaphragm, a bass voice coil and a treble vibration diaphragm, wherein a treble magnetic gap is formed in the first magnetic structure, and the treble magnetic gap is horizontal to the magnetic conduction plate; the second magnetic circuit structure is arranged on the magnetic conduction plate to form a low-pitch magnetic gap; the bass voice coil is arranged on the bass vibrating diaphragm and corresponds to the bass magnetic gap; the high pitch vibrating diaphragm is electrically conductive vibrating diaphragm, the high pitch vibrating diaphragm is located high pitch magnetic gap, the sound production device is equipped with and is used for the radiation the play sound hole of high pitch vibrating diaphragm sound wave. The technical scheme of the invention aims to improve the acoustic performance of the sounding device.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a sound production device and audio equipment.
Background
The sound production device is an important acoustic component in audio equipment, and is a transducer for converting an electric signal into an acoustic signal, and the audio equipment comprises earphones, a sound box, a mobile phone or a computer and the like. Nowadays, the market is more and more pursuing full frequency channel tone quality, for satisfying full frequency channel tone quality, shows the multiunit sound production device that many high bass unit combined, has placed high pitch unit and bass unit in one sound production device simultaneously promptly. The high-pitch unit generally adopts forms such as moving iron, moving coil, piezoelectricity and the like, and the corresponding high-pitch units with different forms have corresponding problems such as reliability (particularly drop test), effective frequency bandwidth, timbre, tone quality, driving power consumption and the like.
Disclosure of Invention
The invention mainly aims to provide a sounding device with better performance.
In order to achieve the above object, the present invention provides a sound generating device, comprising:
a magnetic conductive plate;
the first magnetic circuit structure is provided with a high-pitch magnetic gap, and the high-pitch magnetic gap is horizontal to the magnetic conductive plate;
the second magnetic circuit structure is arranged on the magnetic conduction plate and forms a low-pitch magnetic gap;
the bass voice coil is arranged on the bass vibrating diaphragm and corresponds to the bass magnetic gap; and
the high pitch vibrating diaphragm, the high pitch vibrating diaphragm is electrically conductive vibrating diaphragm, the high pitch vibrating diaphragm is located high pitch magnetic gap, the sound production device is equipped with and is used for the radiation the play sound hole of high pitch vibrating diaphragm sound wave.
Optionally, the first magnetic circuit structure includes a first central magnet and an auxiliary magnet opposite to and spaced apart from the first central magnet, the first central magnet and the auxiliary magnet form the high-pitch magnetic gap therebetween, and the auxiliary magnet is provided with a through hole communicating with the sound outlet hole.
Optionally, the second magnetic circuit structure includes a second central magnet disposed on the magnetic conductive plate and a side magnet disposed on the second central magnet in a spaced manner, a central washer and a side washer are respectively disposed on one sides of the second central magnet and the side magnet, which are far away from the magnetic conductive plate, and the low-frequency magnetic gap is formed between the central washer and the side washer.
Optionally, the first central magnet is disposed on a side of the second central magnet away from the magnetic conductive plate, and the central washer is annular and is disposed around the first central magnet.
Optionally, the first central magnet is fixedly connected to the magnetic conductive plate, and the second central magnet and the central washer are both annular and are annularly arranged on the first central magnet.
Optionally, in a vibration direction of the tweeter diaphragm, a distance from the first center magnet to the tweeter diaphragm is the same as a distance from the auxiliary magnet to the tweeter diaphragm, and the distance between the first center magnet and the auxiliary magnet is greater than a vibration amplitude of the tweeter diaphragm.
Optionally, a projection size of the auxiliary magnet on the treble diaphragm is greater than or equal to a projection size of the first center magnet on the treble diaphragm.
Optionally, the sounding device further comprises a cover body, the cover body is arranged on one side of the high-pitch vibrating diaphragm, the high-pitch vibrating diaphragm is far away from the magnetic conductive plate, the cover body is arranged on the center washer, the auxiliary magnet is connected to the cover body, the cover body is provided with the sound outlet hole, the low-pitch vibrating diaphragm is provided with an avoiding hole opposite to the sound outlet hole, and the low-pitch vibrating diaphragm corresponds to the inner periphery of the avoiding hole and is fixed on the cover body.
Optionally, the high-pitch diaphragm includes a diaphragm base and a first conductive circuit disposed on the diaphragm base, and the first conductive circuit is formed on the diaphragm base by a photolithography process.
Optionally, the first conductive line includes a plurality of coils that are distributed at intervals and concentrically arranged, and a distance between two adjacent coils is less than or equal to 0.02 mm.
Optionally, the periphery of the high-pitched sound diaphragm is further bent and extended with an electric connection portion, the electric connection portion is provided with a second conductive circuit, and the second conductive circuit is used for electrically connecting the first conductive circuit and an external circuit.
Optionally, the high pitch diaphragm is a planar structure.
Optionally, the thickness of the treble diaphragm ranges from 20 micrometers to 30 micrometers.
Optionally, the sound production device further comprises a casing fixedly connected to the magnetic conductive plate, the magnetic circuit structure is accommodated and installed in the casing, the casing is provided with a high-pitch conductive terminal and a low-pitch conductive terminal, the high-pitch vibrating diaphragm is electrically connected to the high-pitch conductive terminal, and the low-pitch voice coil is electrically connected to the low-pitch conductive terminal.
The invention also provides audio equipment comprising the sound production device.
Optionally, the audio device is a headset.
In the technical scheme of the invention, the high-pitch vibrating diaphragm is a conductive vibrating diaphragm, a conductive circuit is formed on the high-pitch vibrating diaphragm, the high-pitch magnetic gap is parallel or approximately parallel to the magnetic conductive plate, and the high-pitch vibrating diaphragm is accommodated in the high-pitch magnetic gap, so that the power conversion efficiency of a high-pitch magnetic circuit is effectively improved; this patent high pitch vibrating diaphragm whole face receives magnetic field drive power, and the vibration uniformity is better, and can effectively promote the high frequency bandwidth and reduce the high frequency distortion. In the invention, the conductive circuit is formed on the high-pitch vibrating diaphragm to replace the traditional voice coil, thereby simplifying the process flow and reducing the manufacturing cost.
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 a schematic view of an assembly structure of an embodiment of a sound device according to the present invention;
FIG. 2 is a schematic diagram of an exploded structure of an embodiment of the sound device of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the sound device of the present invention;
FIG. 4 is a cross-sectional view of another embodiment of the sound device of the present invention;
fig. 5 is a schematic structural diagram of a high pitch diaphragm of the sound device according to an embodiment of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further described 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 (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
The terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. 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 sounding device.
In an embodiment of the present invention, as shown in fig. 1 to 4, the sound generating device includes:
a magnetically permeable plate 110;
a first magnetic structure 200, the first magnetic structure 200 forming a high-pitch magnetic gap H, the high-pitch magnetic gap H being horizontal to the magnetic conductive plate 110;
a second magnetic structure 300, disposed on the magnetic conductive plate 110, and forming a low-pitch magnetic gap L;
the bass voice coil 420 is arranged on the bass vibration diaphragm 410 and corresponds to the low-pitch magnetic gap L; and
In the present invention, a sound generating unit formed by combining the first magnetic structure 200 and the high-pitch diaphragm 430 for vibrating and radiating sound waves is defined as a high-pitch unit, and a sound generating unit formed by combining the second magnetic structure 300, the low-pitch diaphragm 410 and the low-pitch voice coil 420 for driving the low-pitch diaphragm 410 to vibrate is defined as a low-pitch unit, so that the sound generating device can have full-band sound quality.
In the invention, the magnetic circuit of the high pitch unit is arranged in the center of the magnetic circuit of the low pitch unit, the high pitch unit is arranged in the center of the low pitch unit, but the high pitch magnetic field and the low pitch magnetic field are relatively independent, the sound production of the high pitch unit and the sound production of the low pitch unit are not interfered with each other, the design concept is more ingenious, and the acoustic performance of the sound production device is improved, and meanwhile, the miniaturization design of the sound production device is also facilitated.
In the technical scheme of the invention, the high-pitch diaphragm 430 is a conductive diaphragm, a conductive circuit is formed on the high-pitch diaphragm 430, the first magnetic circuit structure 200 is provided with a high-pitch magnetic gap H horizontally parallel to the magnetic conductive plate 110, namely the high-pitch magnetic gap H is parallel or approximately parallel to the magnetic conductive plate 110, the high-pitch diaphragm 430 is accommodated in the high-pitch magnetic gap H, and can vibrate under the interaction of the conductive circuit and the high-pitch magnetic gap H, so that the electro-acoustic conversion efficiency of a high-pitch unit is effectively improved; this patent high pitch vibrating diaphragm whole face receives magnetic field drive power, and the vibration uniformity is better, and can effectively promote the high frequency bandwidth and reduce the high frequency distortion. In the invention, the conductive circuit is formed on the high-pitch vibrating diaphragm to replace the traditional voice coil, thereby simplifying the process flow and reducing the manufacturing cost.
Further, in the present embodiment, the first magnetic circuit structure 200 includes a first central magnet 210 and an auxiliary magnet 200 disposed opposite to and spaced apart from the first central magnet 210, the first central magnet 210 and the auxiliary magnet 200 have opposite magnetizing directions, the high-pitch magnetic gap H is formed between the first central magnet 210 and the auxiliary magnet 200, and the auxiliary magnet 200 is provided with a through hole communicating with the sound outlet hole 501. Optionally, the first central magnet 210 and the auxiliary magnet 200 may be magnetized by axial magnetization, and the first central magnet 210 and the auxiliary magnet 200 have the same magnetization direction as the first central magnet 210 and the auxiliary magnet 200, i.e., a high-pitch magnetic gap H is formed; the first central magnet 210 and the auxiliary magnet 200 may be both annular and magnetized in a radial magnetizing manner, i.e., different magnetic poles are formed at the inner circumferential position and the outer circumferential position of the magnets, respectively, the magnetizing directions of the first central magnet 210 and the auxiliary magnet 200 are opposite, i.e., a high-pitched magnetic gap H may be formed in the middle area of the first central magnet 210 and the auxiliary magnet 200, and the high-pitched diaphragm 430 is correspondingly disposed thereon and may also be driven to vibrate. Of course, in other embodiments, a single magnet may have a receiving space for receiving the tweeter 430, and form the tweeter gap H, and may also drive the tweeter 430 to vibrate. It should be noted that, in a case that is not specifically described, an axial direction of the structure in the sound generating device is a vibration direction of the tweeter diaphragm 430 and the woofer diaphragm 410, a radial direction thereof is parallel to an extending direction of the magnetic conductive plate 110, and a circumferential direction thereof is positioned with reference to the aforementioned axial direction and the radial direction.
In an embodiment, the second magnetic circuit structure 300 includes a second central magnet 310 disposed on the magnetic conductive plate 110 and a side magnet 320 disposed on the second central magnet 310 in a spaced-apart manner, a central washer 330 and a side washer 340 are respectively disposed on sides of the second central magnet 310 and the side magnet 320 away from the magnetic conductive plate 110, the magnetizing directions of the second central magnet 310 and the side magnet 320 are opposite, and the low-pitch magnetic gap L is formed between the central washer 330 and the side washer 340. In this embodiment, the second central magnet 310 and the side magnet 320 are respectively provided with the central washer 330 and the side washer 340, and under the magnetic conduction effect of the washers, the magnetic induction lines of the magnetic field of the low-pitch magnetic gap L are distributed more densely, which is beneficial to improving the stress uniformity of the low-pitch voice coil 420 in the circumferential direction, thereby ensuring the low-pitch performance of the sound production device. The second central magnet 310 and the side magnet 320 may be magnetized in the same direction by radial magnetization or in opposite directions by axial magnetization, and a high-pitch magnetic gap H may be formed between the second central magnet 310 and the side magnet 320.
In one embodiment, as shown in fig. 3, the first central magnet 210 is disposed on a side of the second central magnet 310 facing away from the magnetic conductive plate 110, and the central washer 330 is annular and is disposed around the first central magnet 210. Thus, the volume of the second central magnet 310 can be set to be relatively large, which is beneficial to increasing the magnetic field strength of the low-pitch magnetic gap L and can promote the low-pitch performance of the sound production device. Without loss of generality, in the present embodiment, the first central magnet 210, the auxiliary magnets 200, the second central magnet 310, and the side magnets 320 are all magnetized by axial magnetization, wherein the magnetization directions of the first central magnet 210 and the auxiliary magnets 200 are the same, the magnetization directions of the second central magnet 310 and the first central magnet 210 are opposite, and the magnetization directions of the side magnets 320 and the second central magnet 310 are opposite. Of course, in other embodiments, the first central magnet 210, the auxiliary magnets 200, the second central magnet 310, and the side magnets 320 may also be magnetized by radial magnetization, in which case, the magnetization directions of the first central magnet 210 and the auxiliary magnets 200 are opposite, the magnetization directions of the second central magnet 310 and the first central magnet 210 are the same, and the magnetization directions of the side magnets 320 and the second central magnet 310 are the same.
In one embodiment, as shown in fig. 4, the first central magnet 210 is fixedly connected to the magnetic conductive plate 110, and the second central magnet 310 and the central washer 330 are both annular and are annularly disposed on the first central magnet 210. Thus, the volume of the first central magnet 210 can be set to be relatively large, which is beneficial to improving the magnetic field strength of the high-pitch magnetic gap H and can promote the high-pitch performance of the sounding device. Without loss of generality, in the present embodiment, the first central magnet 210, the auxiliary magnets 200, the second central magnet 310, and the side magnets 320 are all magnetized by axial magnetization, wherein the magnetization directions of the first central magnet 210 and the auxiliary magnets 200 are the same, the magnetization directions of the second central magnet 310 and the first central magnet 210 are opposite, and the magnetization directions of the side magnets 320 and the second central magnet 310 are opposite. Of course, in other embodiments, the first central magnet 210, the auxiliary magnets 200, the second central magnet 310, and the side magnets 320 may also be magnetized by radial magnetization, in which case, the magnetization directions of the first central magnet 210 and the auxiliary magnets 200 are opposite, the magnetization directions of the second central magnet 310 and the first central magnet 210 are the same, and the magnetization directions of the side magnets 320 and the second central magnet 310 are the same.
Further, in the present embodiment, in the vibration direction of the tweeter diaphragm 430, the distance from the first center magnet 210 to the tweeter diaphragm 430 is the same as the distance from the auxiliary magnet 200 to the tweeter diaphragm 430, and the distance between the first center magnet 210 and the auxiliary magnet 200 is greater than the vibration amplitude of the tweeter diaphragm 430. Thus, the space between the first center magnet 210 and the auxiliary magnet 200 can be effectively utilized to ensure that the first center magnet 210 and the auxiliary magnet 200 do not interfere with the vibration of the high-pitched diaphragm 430, which is beneficial to ensuring the high-pitched performance of the sound production device.
Further, in this embodiment, the projection size of the auxiliary magnet 200 on the tweeter diaphragm 430 is greater than or equal to the projection size of the first central magnet 210 on the tweeter diaphragm 430. It can be understood that the projection of the auxiliary magnet 200 on the tweeter diaphragm 430 is greater than or equal to the projection of the first central magnet 210 on the tweeter diaphragm 430, that is, the outer diameter of the auxiliary magnet 200 is greater than or equal to the outer diameter of the first central magnet 210, so that the auxiliary magnet 200 can repel the second central magnet 310 and the magnetic induction line to prevent the magnetic induction line of the first central magnet 210 from diverging toward the second central magnet 310, so as to ensure the magnetic field strength of the tweeter magnetic gap H, and thus can ensure the tweeter performance of the sound-producing device.
Further, in this embodiment, the sound generating device further includes a cover 500, the cover 500 is disposed on the high-pitched sound diaphragm 430, which is far away from one side of the magnetic conductive plate 110, and is covered on the central washer 330, the auxiliary magnet 200 is connected to the cover 500, the cover 500 is provided with the sound outlet hole 501, the low-pitched sound diaphragm 410 is provided with an avoiding hole 411 opposite to the sound outlet hole 501, and the low-pitched sound diaphragm 410 corresponds to the inner circumference of the avoiding hole 411 is fixed to the cover 500. So, bass vibrating diaphragm 410 can install on lid 500 relatively steadily, because lid 500's separation effect, the air vibration that treble vibrating diaphragm 430 arouses can not disturb bass vibrating diaphragm 410, and the air vibration that bass vibrating diaphragm 410 arouses also can not disturb treble vibrating diaphragm 430, is favorable to further ensuring the independence between the high pitch sound production of sound production device and the bass sound production to further ensure the high pitch performance and the bass performance of sound production device.
In an embodiment, the sound generating device further includes a casing 120 fixedly connected to the magnetic conductive plate 110, the magnetic circuit structure is accommodated and installed in the casing 120, the casing 120 is provided with a high-pitch conductive terminal 130 and a low-pitch conductive terminal 140, the high-pitch diaphragm 430 is electrically connected to the high-pitch conductive terminal 130, and the low-pitch voice coil 420 is electrically connected to the low-pitch conductive terminal 140. In this embodiment, the high pitch conductive terminal 130 and the low pitch conductive terminal 140 are independently connected to the high pitch diaphragm 430 and the low pitch coil, respectively, and the high pitch diaphragm 430 and the low pitch coil can be independently and indirectly connected to the external circuit, respectively, receive the current input by the external circuit, and independently move under the action of the high pitch magnetic gap H and the low pitch magnetic gap L, respectively, so that the high pitch sound and the low pitch sound of the sound producing device can be relatively independent, and the acoustic performance of the sound producing device can be improved. Of course, in other embodiments, the bass voice coil 420 and the treble diaphragm 430 may be directly electrically connected to the external circuit.
In one embodiment, the high-pitch diaphragm 430 includes a diaphragm base 431 and a first conductive trace 432 disposed on the diaphragm base 431, and the first conductive trace 432 is formed on the diaphragm base 431 through a photolithography process. By such processing, the first conductive circuit 432 can be accurately formed on the diaphragm base body 431 and stably attached to the diaphragm base body 431, which is beneficial to ensuring the structural stability of the first conductive circuit 432, thereby ensuring the high-pitch performance of the sound production device. Of course, in other embodiments, the first conductive traces 432 may be formed by applying conductive silver paste to the diaphragm base 431.
Further, in this embodiment, the first conductive trace 432 includes a plurality of coils that are distributed at intervals and concentrically disposed, and a distance between two adjacent coils is less than or equal to 0.02 mm. Thus, the first conductive circuit 432 can be conveniently processed, and the formed high-pitch diaphragm 430 can meet the vibration requirement in the high-pitch frequency band, thereby being beneficial to ensuring the high-pitch performance of the sound production device.
In one embodiment, the tweeter diaphragm 430 has a planar structure. The high-pitch diaphragm 430 is of a plane structure, so that high pitch F0 (resonant frequency) of the sounding device is higher, the bandwidth is wider after low pitch synthesis, the modulus of the high-pitch diaphragm 430 is high, the high-frequency bandwidth can be expanded, and the acoustic performance of the sounding device is improved.
Further, in the present embodiment, the thickness of the tweeter diaphragm 430 ranges from 20 micrometers to 30 micrometers. The thickness of the high pitch vibrating diaphragm 430 is within the range, so that the requirement for forming the first conducting circuit 432 can be met, the vibration requirement of a high pitch frequency band can be met, and the high pitch performance of the sounding device is guaranteed.
In an embodiment, an electrical connection portion 440 is further bent and extended around the periphery of the high-pitched sound diaphragm 430, and the electrical connection portion 440 is provided with a second conductive trace for electrically connecting the first conductive trace 432 and an external circuit. Thus, the first conductive trace 432 can receive the current input from the external circuit through the second conductive trace, and can interact with the magnetic field of the high-pitched magnetic gap H to drive the high-pitched diaphragm 430 to vibrate. The electrical connection portion 440 is bent, so that the electrical connection portion 440 can extend toward the housing 120, and the second conductive trace is electrically connected to an external circuit. Specifically, the second conductive trace is electrically connected to the tweeter conductive terminal 130, wherein the tweeter conductive terminal 130 has a conductive contact exposed out of the housing 120, and the second conductive trace is connected to the conductive contact, such that the first conductive trace 432 of the tweeter diaphragm 430 is electrically connected to an external circuit. Further, the electrical connection portion 440 and the diaphragm body are integrally formed, and the second conductive trace and the first conductive trace 432 are respectively formed on the electrical connection portion 440 and the diaphragm body by a photolithography process in an integrally forming manner. Without loss of generality, the flat shape of the diaphragm base body 431 and the electrical connection portion 440 can be cut out on the substrate, the second conductive circuit and the first conductive circuit 432 are integrally formed through a photoetching process, and then the electrical connection portion 440 is bent compared with the diaphragm base body 431 through a hot pressing mode.
Further, in the present embodiment, the conductive contact is disposed near the magnetic conductive plate 110, and the electrical connection portion 440 penetrates through the second washer and the second central magnet 310. So, electric connection portion 440 can depend on second china department and second center magnet 310, plays the supporting role to electric connection portion 440 through second china department and second center magnet 310, avoids electric connection portion 440 unsettled, and influences the structural stability of second conducting wire to make high pitch vibrating diaphragm 430 can be connected with external circuit electricity steadily.
Further, in this embodiment, the electrical connection portion 440 includes a first connection section 441 and a second connection section 442, two ends of the first connection section 441 are respectively connected to the diaphragm base 431 and the second connection section 442, the first connection section 441 is bent toward a direction close to the magnetic conductive plate 110 relative to the diaphragm base 431 and passes through the central washer 330 and the second central magnet 310, and the second connection section 442 is bent toward a direction close to the housing 120 relative to the first connection section 441. Thus, the center washer 330 and the second center magnet 310 can support the first connecting section 441 to ensure the structural stability of the portion of the second conductive trace formed on the first connecting section 441, and the magnetic conductive plate 110 can support the second connecting section 442 to ensure the structural stability of the portion of the second conductive trace formed on the second connecting section 442, so that the second conductive trace can stably electrically connect the high-sound diaphragm 430 and the external circuit to ensure the high-sound performance of the sound generating device. Of course, in other embodiments, the first connecting section 441 first extends toward the casing 120, and the second connecting section 442 then extends toward the magnetic conductive plate 110.
The present invention further provides an audio device, which includes a sound generating device, and the specific structure of the sound generating device refers to the above embodiments, and since the audio device adopts all the technical solutions of all the above embodiments, the audio device at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. The audio device may be a sound box, an earphone, a mobile phone or a computer.
The above description is only an alternative embodiment of the present invention, and 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 (14)
1. A sound producing device, comprising:
a magnetic conductive plate;
the first magnetic circuit structure is provided with a high-pitch magnetic gap, and the high-pitch magnetic gap is horizontal to the magnetic conductive plate;
the second magnetic circuit structure is arranged on the magnetic conduction plate and forms a low-pitch magnetic gap;
the bass voice coil is arranged on the bass vibrating diaphragm and corresponds to the bass magnetic gap; and
the high pitch vibrating diaphragm, the high pitch vibrating diaphragm is electrically conductive vibrating diaphragm, the high pitch vibrating diaphragm is located high pitch magnetic gap, the sound production device is equipped with and is used for the radiation the play sound hole of high pitch vibrating diaphragm sound wave.
2. The sound producing device as claimed in claim 1, wherein the first magnetic circuit structure includes a first central magnet and an auxiliary magnet disposed opposite to and spaced apart from the first central magnet, the first central magnet and the auxiliary magnet forming the high-pitch magnetic gap therebetween, the auxiliary magnet being provided with a through hole communicating with the sound outlet hole.
3. The sounding device according to claim 2, wherein the second magnetic circuit structure comprises a second central magnet disposed on the magnetic conductive plate and a side magnet disposed on the second central magnet and having a spacer ring, wherein a central washer and a side washer are disposed on sides of the second central magnet and the side magnet away from the magnetic conductive plate, respectively, and the low-pitch magnetic gap is formed between the central washer and the side washer.
4. The sounder device according to claim 3, wherein said first central magnet is disposed on a side of said second central magnet facing away from said magnetic conductive plate, and said central washer is annular and surrounds said first central magnet;
or, the first central magnet is fixedly connected to the magnetic conductive plate, and the second central magnet and the central washer are both annular and are annularly arranged on the first central magnet.
5. The sound production device of claim 2, wherein, in a vibration direction of the tweeter diaphragm, a distance from the first center magnet to the tweeter diaphragm is the same as a distance from the auxiliary magnet to the tweeter diaphragm, and the distance between the first center magnet and the auxiliary magnet is greater than a vibration amplitude of the tweeter diaphragm.
6. The sounding device of claim 2, wherein a projected dimension of the auxiliary magnet on the treble diaphragm is greater than or equal to a projected dimension of the first center magnet on the treble diaphragm.
7. The sound-producing device according to any one of claims 3 to 6, wherein the sound-producing device further comprises a cover, the cover is disposed on a side of the high-pitched sound diaphragm away from the magnetic conductive plate and covers the central washer, the auxiliary magnet is connected to the cover, the cover is provided with the sound-emitting hole, the low-pitched sound diaphragm is provided with an avoiding hole opposite to the sound-emitting hole, and an inner periphery of the low-pitched sound diaphragm corresponding to the avoiding hole is fixed to the cover.
8. The sound production device of any one of claims 2 to 6, wherein the high-pitch diaphragm comprises a diaphragm base and a first conductive trace formed on the diaphragm base by a photolithography process.
9. The sound device of claim 8, wherein the first conductive trace comprises a plurality of spaced apart and concentrically arranged coils, and wherein a spacing between adjacent coils is less than or equal to 0.02 mm.
10. The sound production device as claimed in claim 8, wherein an electrical connection portion is further bent and extended around the periphery of the tweeter diaphragm, the electrical connection portion is provided with a second conductive trace, and the second conductive trace is used for electrically connecting the first conductive trace and an external circuit.
11. A sound-producing device as claimed in any one of claims 2 to 6, characterized in that the tweeter diaphragm is of planar construction and/or in that the thickness of the tweeter diaphragm is in the range 20 to 30 μm.
12. The device of any one of claims 1 to 6, further comprising a housing fixedly connected to the magnetic conductive plate, wherein the magnetic circuit structure is accommodated and mounted in the housing, the housing is provided with a high-pitch conductive terminal and a low-pitch conductive terminal, the high-pitch diaphragm is electrically connected to the high-pitch conductive terminal, and the low-pitch voice coil is electrically connected to the low-pitch conductive terminal.
13. Audio device, characterized in that it comprises a sound-producing device according to any one of claims 1 to 12.
14. The audio device of claim 13, wherein the audio device is a headset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489051.XA CN114866921A (en) | 2022-04-29 | 2022-04-29 | Sound production device and audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489051.XA CN114866921A (en) | 2022-04-29 | 2022-04-29 | Sound production device and audio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114866921A true CN114866921A (en) | 2022-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210489051.XA Pending CN114866921A (en) | 2022-04-29 | 2022-04-29 | Sound production device and audio equipment |
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| Country | Link |
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| CN (1) | CN114866921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024046059A1 (en) * | 2022-08-30 | 2024-03-07 | 华为技术有限公司 | Sound production apparatus and electronic device |
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| KR200323331Y1 (en) * | 2003-05-16 | 2003-08-14 | 유옥정 | A Vibration Module for Micro Speaker and Micro Speaker with the same |
| KR20070033840A (en) * | 2005-09-22 | 2007-03-27 | 에스텍 주식회사 | speaker |
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