WO2021218916A1 - 扬声器及电子设备 - Google Patents

扬声器及电子设备 Download PDF

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Publication number
WO2021218916A1
WO2021218916A1 PCT/CN2021/089895 CN2021089895W WO2021218916A1 WO 2021218916 A1 WO2021218916 A1 WO 2021218916A1 CN 2021089895 W CN2021089895 W CN 2021089895W WO 2021218916 A1 WO2021218916 A1 WO 2021218916A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
component
speaker
vibration
diaphragm
Prior art date
Application number
PCT/CN2021/089895
Other languages
English (en)
French (fr)
Inventor
蒋国珠
李伟
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to KR1020227040868A priority Critical patent/KR20230002974A/ko
Priority to JP2022566105A priority patent/JP7408842B2/ja
Priority to EP21796052.5A priority patent/EP4145856A4/en
Publication of WO2021218916A1 publication Critical patent/WO2021218916A1/zh
Priority to US17/975,123 priority patent/US20230052353A1/en

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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
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • 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
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • 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
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • 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

Definitions

  • the present invention relates to the technical field of communication equipment, in particular to a loudspeaker and electronic equipment.
  • Audio directional technology refers to the application of nonlinear acoustic theory to achieve the directional propagation of sound.
  • two ultrasonic waves propagating in the same direction are demodulated in the air to generate a difference frequency wave, and the generated difference frequency wave is audible to the human ear, and the difference frequency wave It has high directivity, so that the sound can be transmitted to the designated area, but not heard in other areas.
  • the invention discloses a loudspeaker and electronic equipment to solve the problem of high distortion of the loudspeaker.
  • the embodiment of the present invention discloses a speaker including a bracket, a magnetic component, a first vibration component, and a second vibration component.
  • the first vibration component is arranged on a first side of the support, and the second vibration component is arranged on the The second side of the bracket, the first side and the second side are arranged opposite to each other, the first vibration component includes a first voice coil and a first diaphragm, and the second vibration component includes a second voice coil And a second diaphragm, the first diaphragm and the second diaphragm are both connected to the support,
  • the support has an accommodating space, the magnetic component is arranged in the accommodating space, the magnetic component and A magnetic gap is formed between the brackets, the first voice coil and the second voice coil are at least partially located in the magnetic gap, the first vibration component can emit a first ultrasonic wave, and the second vibration component A second ultrasonic wave can be emitted, and the frequency of the first ultrasonic wave is not equal to the frequency of the second ultrasonic wave
  • An embodiment of the present invention discloses an electronic device, including a device body and the above-mentioned speaker.
  • the device body is provided with an inner cavity and a sound outlet, the sound outlet communicates with the inner cavity, and the speaker is arranged in the device body. ⁇ .
  • the first vibrating component is arranged on the first side of the bracket, the second vibrating component is arranged on the second side of the bracket, and the first vibrating component includes a first voice coil and a first diaphragm.
  • the vibrating assembly includes a second voice coil and a second vibrating membrane, the first vibrating membrane and the second vibrating membrane are both connected to the bracket, and both the first voice coil and the second voice coil are at least partially located in the magnetic gap.
  • the first vibrating component and the second vibrating component are independent of each other.
  • the two vibrating components respectively generate two ultrasonic waves. Each vibrating component works independently and generates one ultrasonic wave respectively. This avoids the need for the same vibration component to vibrate and generate two ultrasonic waves at the same time. Prevent the speaker from producing obvious intermodulation distortion when emitting two ultrasonic waves, thereby making the speaker's distortion lower.
  • the resonant frequencies of the first vibrating component and the second vibrating component may be different, so that the resonant frequency of the first vibrating component is closer to the frequency of the first ultrasonic wave, and the resonant frequency of the second vibrating component is closer to the frequency of the second ultrasonic wave.
  • Applying an excitation electrical signal that is the same or similar to the resonant frequency of the first vibration component to the first voice coil, and applying an excitation electrical signal that is the same or similar to the resonant frequency of the second vibration component to the second voice coil can make the first vibration
  • the component emits the first ultrasonic wave at the resonant frequency position with the highest electroacoustic conversion efficiency, so that the second vibrating component emits the second ultrasonic wave at the resonant frequency position with the highest electroacoustic conversion efficiency, so that the energy efficiency of the speaker is greater.
  • Fig. 1 is a schematic diagram of a speaker disclosed in an embodiment of the present invention
  • Figure 2 is a schematic diagram of a speaker disclosed in another embodiment of the present invention.
  • Fig. 3 is a schematic diagram of an electronic device disclosed in an embodiment of the present invention.
  • 200-Magnetic component 210-First magnetic member, 220-First magnetic member, 230-Second magnetic member, 240-Second magnetic member;
  • 300-first vibration component 310-first voice coil, 320-first diaphragm, 330-first dome;
  • an embodiment of the present invention discloses a speaker.
  • the disclosed speaker includes a bracket 100, a magnetic component 200, a first vibration component 300 and a second vibration component 400.
  • the bracket 100 is a basic component of the speaker, and the bracket 100 can provide an installation foundation for other components of the speaker.
  • the bracket 100 has a first side and a second side opposite to each other, and the bracket 100 has an accommodating space 110.
  • the magnetic component 200 is disposed in the accommodating space 110, and a magnetic gap 500 is formed between the magnetic component 200 and the support 100.
  • the magnetic gap 500 has magnetic lines of force, that is, the magnetic gap 500 has a magnetic field.
  • the first vibration assembly 300 is arranged on the first side of the support 100, and the second vibration assembly 400 is arranged on the second side of the support 100.
  • the first vibration assembly 300 includes a first voice coil 310 and a first diaphragm 320.
  • the second vibration assembly 400 includes a second voice coil 410 and a second diaphragm 420, the first diaphragm 320 and the second diaphragm 420 are both connected to the support 100, the first voice coil 310 and the second voice coil 410 are both at least partially located in the magnetic gap 500 ,
  • the first vibration assembly 300 and the second vibration assembly 400 are sound-producing parts of the speaker.
  • the first voice coil 310 and the second voice coil 410 are energized, since the energized wire receives ampere force in the magnetic field, it is located in the magnetic gap 500 between the first voice coil 310 and the second voice coil at least partially.
  • the coil 410 is at least partially displaced by the ampere force.
  • the displacement amplitude of the first voice coil 310 and the second voice coil 410 can be controlled. Value and displacement direction, so that the first vibration component 300 and the second vibration component 400 emit sound waves through vibration, and the first vibration component 300 can emit the first ultrasonic wave, and the second vibration component 400 can emit the second ultrasonic wave.
  • the frequency is not equal to the frequency of the second ultrasonic wave.
  • the speaker can emit two ultrasonic waves, and the high directivity of the ultrasonic waves can make the two ultrasonic waves propagate directionally in the air.
  • the two ultrasonic waves can be adjusted to more A sound wave, where the frequency of the two ultrasonic waves emitted by the speaker is reasonably selected so that the difference frequency sound waves of the two ultrasonic waves are audible sound waves.
  • the speaker emits two ultrasonic waves with frequencies f1 and f2, which are affected by the nonlinear interaction of air Influence
  • the two ultrasonic waves with frequencies f1 and f2 are adjusted into multiple sound waves such as f1, f2, f1+f2, f1-f2, 2f1, 2f2, among which f1-f2 is the difference frequency sound wave.
  • the difference frequency sound wave after linear adjustment still has a high degree of directivity, so that the difference frequency sound wave can be directionally propagated in the air, so that the sound can be directionally propagated.
  • the principles of ultrasonic directional propagation are all known technologies, and for the sake of brevity of the text, they will not be repeated here.
  • the user can control the first voice coil 310 and the second voice coil 410 to connect to the electrical signals by manipulating buttons or voice control.
  • the combined effect of the magnetic field in the gap 500 and the electrical signals on the first voice coil 310 and the second voice coil 410 causes the first vibration assembly 300 and the second vibration assembly 400 to emit two ultrasonic waves through vibration, and the two ultrasonic waves are decomposed in the air. Adjusted to audible sound waves, and directed to the recipient, so that the sound from the speaker will not be transmitted to the surrounding environment, avoid affecting the surrounding environment or being heard by other people, thereby improving the privacy of the user's call and protecting the user's privacy .
  • the first vibrating component 300 is disposed on the first side of the bracket 100
  • the second vibrating component 400 is disposed on the second side of the bracket 100.
  • the first vibrating component 300 includes a first voice coil 310 and a second side.
  • a diaphragm 320, the second vibration assembly 400 includes a second voice coil 410 and a second diaphragm 420, the first diaphragm 320 and the second diaphragm 420 are both connected to the support 100, the first voice coil 310 and the second voice coil 410 are at least partially located in the magnetic gap 500.
  • the first vibrating component 300 and the second vibrating component 400 are independent of each other.
  • the two vibrating components respectively generate two ultrasonic waves.
  • Each vibrating component works independently and generates one ultrasonic wave respectively, avoiding the need to vibrate the same vibrating component to generate two ultrasonic waves at the same time , So as to prevent the speaker from producing obvious intermodulation distortion when two ultrasonic waves are emitted, thereby making the distortion of the speaker lower.
  • the resonant frequencies of the first vibrating component 300 and the second vibrating component 400 may be different, so that the resonant frequency of the first vibrating component 300 is closer to the frequency of the first ultrasonic wave, and the resonant frequency of the second vibrating component 400 is similar to that of the second ultrasonic wave.
  • the frequency is closer, the first voice coil 310 is applied with the same or similar excitation signal as the resonant frequency of the first vibration component 300, and the second voice coil 410 is applied with the same or similar excitation signal as the resonant frequency of the second vibration component 400
  • the electrical signal can cause the first vibrating component 300 to emit the first ultrasonic wave at the resonance frequency position with the highest electro-acoustic conversion efficiency, so that the second vibrating component 400 emits the second ultrasonic wave at the resonant frequency position with the highest electro-acoustic conversion efficiency.
  • the energy efficiency of the speakers is greater.
  • the number of the accommodating space 110 and the magnetic component 200 may both be one, the accommodating space 110 penetrates the bracket 100, and a magnetic gap 500 is formed between the magnetic component 200 and the inner wall of the accommodating space 110.
  • the first vibration component 300 and the second vibration component 400 can share the same magnetic component 200, which reduces the number of magnetic components 200, thereby reducing the cost of the speaker.
  • a magnetic assembly 200 occupies a small space of the speaker, so that the speaker can be made small, so that the volume of the speaker is small, and the current user's demand for light and thin electronic devices can be met.
  • the magnetic assembly 200 may include a first magnetic member 210 and two first magnetically conductive members 220.
  • the two first magnetically conductive members 220 are respectively disposed on opposite sides of the first magnetic member 210, and the two first magnetic members
  • the magnetic conductive member 220 is arranged opposite to the first vibration assembly 300 and the second vibration assembly 400 respectively.
  • the cost of the magnetic component is generally lower than that of the magnetic component, in this embodiment, under the condition that the magnetic gap 500 is formed between the magnetic component 200 and the inner wall of the accommodating space 110, two first magnetic components are used 220 replaces part of the first magnetic member 210, which can make the size of the first magnetic member 210 smaller, thereby reducing the cost, and the first magnetic member 220 can better form a strong magnetic field with the inner wall of the accommodating space 110
  • the magnetic gap is 500 to avoid affecting the normal operation of the speaker.
  • the type of the first magnetically conductive member 220 is not limited in the embodiment of the present invention.
  • the number of the accommodating space 110 and the magnetic component 200 can both be one.
  • the number of the accommodating space 110 and the magnetic component 200 can also be two.
  • the two accommodating spaces 110 can be respectively opened on the first side and On the second side, the two magnetic components 200 are arranged in the two accommodating spaces 110 in a one-to-one correspondence, and the two magnetic components 200 form a magnetic gap 500 with the inner walls of the two accommodating spaces 110 in a one-to-one correspondence.
  • the bracket 100 is not penetrated, so that the strength of the bracket 100 can be increased, so that the strength of the bracket 100 is higher, thereby improving the reliability of the bracket 100, and ultimately improving the reliability of the speaker.
  • the magnetic component 200 includes a second magnetic component 230 and a second magnetic conductive component 240.
  • the second magnetic conductive component 240 is disposed on one side of the second magnetic component 230 and is connected to the first vibration component 300 or the second vibration component 400. relatively.
  • the second magnetic member 240 is used to replace part of the second magnetic member 230, so that the second magnetic member 230 can be
  • the size is small, so that the cost can be reduced, and the second magnetic conductive member 240 can better form a magnetic gap 500 with the inner wall of the accommodating space 110 to avoid affecting the normal operation of the speaker.
  • the type of the second magnetically permeable member 240 is not limited in the embodiment of the present invention.
  • the magnetic induction density in the magnetic gap 500 can be larger, so that the magnetic field in the magnetic gap 500 is stronger, and the first voice coil 310 and the second voice coil 410 are energized.
  • the first voice coil 310 and the second voice coil 410 receive a greater ampere force in the magnetic gap 500 with a strong magnetic field, so that the first vibration assembly 300 and the second vibration assembly 400 can vibrate strongly .
  • the current in the first voice coil 310 and the second voice coil 410 may be small, so that the power consumption of the speaker is small.
  • the support 100 may be a magnetically permeable support, and the magnetically permeable support has magnetism under the action of the magnetic component 200, so as to form a high magnetic induction density with the magnetic component 200.
  • the magnetic gap 500 can further increase the magnetic induction density in the magnetic gap 500.
  • the first vibration component 300 and the second vibration component 400 are the sound-producing parts of the speaker, and the first vibration component 300 can emit a first ultrasonic wave, and the second vibration component 400 can emit a second ultrasonic wave.
  • a vibration assembly 300 may further include a first dome 330, the first voice coil 310 is connected to the first dome 330, the first diaphragm 320 is connected to the edge of the first dome 330, and the first diaphragm 320 is connected to the support 100 Connected, the first vibration component 300 of this structure has a simple structure and is convenient to install, and the sound effect of the first vibration component 300 is better.
  • the second vibration assembly 400 may further include a second dome 430, the second voice coil 410 is connected to the second dome 430, the second diaphragm 420 is connected to the edge of the second dome 430, and the second diaphragm 420 is connected to the bracket 100 connected.
  • the second vibration component 400 of this structure has a simple structure and is easy to install, and the second vibration component 400 has a better sound effect. Specifically, by adjusting the material and shape of the first diaphragm 320 and the second diaphragm 420, the weight of the first dome 330 and the second dome 430, and the weight of the first voice coil 310 and the second voice coil 410, The resonant frequency of the first vibration component 300 and the second vibration component 400 can be adjusted.
  • the speaker since the speaker needs to emit ultrasonic waves, it is required that the material hardness of the first diaphragm 320 and the second diaphragm 420 be high, the weight of the first dome 330 and the second dome 430, and the first voice coil 310 and the second The voice coil 410 is lighter in weight.
  • the support 100 is a magnetically conductive support
  • the first diaphragm 320 and the second diaphragm 420 connected to the support 100 are affected by the magnetic force of the support 100, which makes it difficult for the first vibration assembly 300 and the second vibration assembly 400 to perform better optimization.
  • the vibration may cause distortion of the sound emitted by the first vibration component 300 and the second vibration component 400.
  • the speaker may further include a first non-magnetically conductive support 600 and a second non-magnetically conductive support 700, the first non-magnetically conductive support 600 is disposed on the first side, and the second A diaphragm 320 is connected to the first non-magnetically conductive support 600, the second non-magnetically conductive support 700 is disposed on the second side, and the second diaphragm 420 is connected to the second non-magnetically conductive support 700.
  • the first non-magnetically conductive support member 600 and the second non-magnetically conductive member 700 can prevent the first diaphragm 320 and the second diaphragm 420 from being affected by the magnetic force of the bracket 100, so that The first vibration component 300 and the second vibration component 400 can be independent when vibrating and are not affected by the magnetic force of the bracket 100, so that the vibration effect of the first vibration component 300 and the second vibration component 400 is better and prevents the first vibration component The sound emitted by 300 and the second vibration component 400 is distorted.
  • the embodiment of the present invention also discloses an electronic device.
  • the disclosed electronic device includes a device body 800 and the speaker described in any of the above embodiments.
  • the device body 800 is provided with an inner cavity 810 and an outlet.
  • the sound hole 820 and the sound hole 820 are communicated with the inner cavity 810, and the loudspeaker is arranged in the inner cavity 810.
  • the ultrasonic waves emitted by the speaker can propagate to the outside of the electronic device through the sound hole 820, so that the sound of the electronic device can be directionally propagated.
  • the direction of the sound hole 820 can be adjusted so that the sound of the electronic device can be directionally transmitted to the receiving object, so that the sound emitted by the electronic device can be directionally transmitted to the location of the receiving object, and the sound will not be transmitted to the surrounding environment
  • the privacy of the user’s call is improved and the privacy of the user is protected.
  • the answering object may be the user of the electronic device, or the receiving object of the sound designated by the user of the electronic device, for example, the user of the electronic device shares the sound with other people.
  • the internal cavity 810 of the speaker can be divided into a first cavity and a second cavity, and the first vibration component 300 faces the first internal cavity, the second vibration component 400 faces the second internal cavity, and the device body 800 is provided with a first cavity.
  • the sound hole 820 communicates with the first cavity through the first sound guide channel, and the sound hole 820 communicates with the second cavity through the second sound guide channel, so that the two The beams of ultrasonic waves propagate far away through a sound hole 820, which can make the sound propagation more directional.
  • the side wall of the inner cavity 810 may be provided with an installation groove, the speaker may be arranged in the installation groove, and the speaker is connected to the side wall of the installation groove through the foam 900.
  • This setting method is relatively simple and convenient to set.
  • the foam 900 can buffer the speaker, prevent the speaker from being damaged due to the impact of the electronic device or the vibration of the electronic device, thereby improving the reliability of the electronic device.
  • the sound hole 820 can be opened on the electronic device by post-processing.
  • this method will destroy the integrity of the electronic device, resulting in a lower aesthetic appearance of the electronic device.
  • the device body 800 may include a first functional component and a second functional component, the first functional component is installed in the second functional component, and there is an assembly gap between the first functional component and the second functional component, and the assembly gap forms a Sound hole 820.
  • the assembly gap is used to replace the sound hole 820 opened on the electronic equipment by post-processing, so as to avoid opening holes in the electronic equipment. This method will not damage
  • the integration of the electronic device makes the appearance of the electronic device more beautiful, so that the user experience is better.
  • the first functional component when the electronic device is a mobile phone, the first functional component may be a casing, the second functional component may be a battery cover, and the second functional component may also be a button. There is usually an assembly gap between the button and the casing. In the embodiment of the present invention, the manner of forming the assembly gap is not limited.
  • the number of the sound holes 820 can be multiple, and the multiple sound holes 820 are all connected to the inner cavity 810.
  • the multiple sound holes 820 can make more ultrasonic waves propagate to the outside of the electronic device, so that the electronic The sound effect of the device is better, thereby improving the user experience of the electronic device.
  • the electronic devices disclosed in the embodiments of the present invention may be devices such as smart phones, tablet computers, e-book readers, smart glasses (such as smart watches), and electronic game consoles.
  • the embodiments of the present invention do not limit the specific types of electronic devices.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

本发明公开一种扬声器及电子设备，所公开的扬声器包括支架、磁性组件、第一振动组件和第二振动组件，第一振动组件设置于支架的第一侧，第二振动组件设置于支架的第二侧，第一侧与第二侧相背设置，第一振动组件包括第一音圈和第一振膜，第二振动组件包括第二音圈和第二振膜，第一振膜和第二振膜均与支架相连，支架具有容纳空间，磁性组件设置于容纳空间内，磁性组件与支架之间形成磁间隙，第一音圈和第二音圈均至少部分位于磁间隙中，第一振动组件可发出第一超声波，第二振动组件可发出第二超声波，第一超声波的频率与第二超声波的频率不相等。

Description

扬声器及电子设备
交叉引用
本发明要求在2020年04月29日在中国提交的申请号为202010359556.5、发明名称为“扬声器及电子设备”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本发明涉及通信设备技术领域，尤其涉及一种扬声器及电子设备。
背景技术
随着电子设备的快速发展，电子设备的应用越来越广泛，诸如手机、平板电脑等电子设备在人们的工作、生活、娱乐等方面发挥着越来越多的作用。目前电子设备的扬声器以及受话器是将音频信号放大后由音膜推动空气发出声音，人耳可听声的频率范围在20Hz-20kHz，由于可听声的声波在空气中传播不具备明显的指向性，导致该声音向周围各个方向传播，进而导致该声音能被较多的人听到。当人们在使用电子设备播放音乐、看视频或视频聊天时容易影响他人，当前主要通过佩戴耳机解决，然而，长期佩戴耳机会产生不舒适、中耳炎等问题，同时有外出忘记携带的可能。因此，人们渴望出现一种能定向地投送声音到指定位置而不影响周边环境的发声方式。
针对上述问题，目前采用音频定向技术将声音定向地投送到指定位置而不影响周边环境，音频定向技术指的是应用非线性声学理论实现声音的定向传播。利用超声波的高指向性以及空气的非线性解调作用，使两个沿同一方向传播的超声波，在空气中解调出差频波，所产生的差频波为人耳可听声，且差频波具有高指向性，以使声音传播到指定区域，而其他区域听不到。
目前扬声器一般需要同时产生两个频率的超声波，以在远端通过差频解调为可听声波。但是，扬声器同时发出两个频率的超声波时，扬声器的振膜需要同时振动产生两个频率的超声波，导致两个频率的超声波会产生明显的互调失真，导致扬声器失真较高。
发明内容
本发明公开一种扬声器及电子设备，以解决扬声器失真较高的问题。
本发明实施例公开一种扬声器，包括支架、磁性组件、第一振动组件和第二振动组件，所述第一振动组件设置于所述支架的第一侧，所述第二振动组件设置于所述支架的第二侧，所述第一侧与所述第二侧相背设置，所述第一振动组件包括第一音圈和第一振膜，所述第二振动组件包括第二音圈和第二振膜，所述第一振膜和所述第二振膜均与所述支架相连，所述支架具有容纳空间，所述磁性组件设置于所述容纳空间内，所述磁性组件与所述支架之间形成磁间隙，所述第一音圈和所述第二音圈均至少部分位于所述磁间隙中，所述第一振动组件可发出第一超声波，所述第二振动组件可发出第二超声波，所述第一超声波的频 率与所述第二超声波的频率不相等。
本发明实施例公开一种电子设备，包括设备本体和上述的扬声器，所述设备本体开设有内腔和出音孔，所述出音孔与所述内腔相连通，所述扬声器设置于所述内腔内。
本发明采用的技术方案能够达到以下有益效果：
本发明实施例公开的扬声器中，第一振动组件设置于支架的第一侧，第二振动组件设置于支架的第二侧，第一振动组件包括第一音圈和第一振膜，第二振动组件包括第二音圈和第二振膜，第一振膜和第二振膜均与支架相连，第一音圈和第二音圈均至少部分位于磁间隙中。第一振动组件与第二振动组件相互独立，两个振动组件分别产生两束超声波，每个振动组件独立工作，且分别产生一束超声波，避免同一个振动组件需要同时振动产生两束超声波，从而防止扬声器在发出两束超声波时产生明显的互调失真，进而使得扬声器的失真较低。
同时，第一振动组件和第二振动组件的谐振频率可以不同，以使第一振动组件的谐振频率与第一超声波的频率更接近，第二振动组件的谐振频率与第二超声波的频率更接近，对第一音圈施加与第一振动组件的谐振频率相同或相近的激励电信号，对第二音圈施加与第二振动组件的谐振频率相同或相近的激励电信号，能够使得第一振动组件在电声转换效率最高的谐振频率位置处发出第一超声波，使得第二振动组件在电声转换效率最高的谐振频率位置处发出第二超声波，从而使得扬声器的能效较大。
附图说明
为了更清楚地说明本发明实施例或背景技术中的技术方案，下面将对实施例或背景技术描述中所需要使用的附图作简单的介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例公开的扬声器的示意图；
图2为本发明另一实施例公开的扬声器的示意图；
图3为本发明实施例公开的电子设备的示意图。
附图标记说明：
100-支架、110-容纳空间；
200-磁性组件、210-第一磁性件、220-第一导磁件、230-第二磁性件、240-第二导磁件；
300-第一振动组件、310-第一音圈、320-第一振膜、330-第一球顶；
400-第二振动组件、410-第二音圈、420-第二振膜、430-第二球顶；
500-磁间隙；
600-第一非导磁支撑件；
700-第二非导磁支撑件；
800-设备本体、810-内腔、820-出音孔；
900-泡棉。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合本发明具体实施例及相应 的附图对本发明技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
以下结合附图，详细说明本发明各个实施例公开的技术方案。
请参考图1至图3，本发明实施例公开一种扬声器，所公开的扬声器包括支架100、磁性组件200、第一振动组件300和第二振动组件400。
其中，支架100为扬声器的基础构件，支架100能够为扬声器的其他部件提供安装基础。在本发明实施例中，支架100具有相背的第一侧和第二侧，且支架100具有容纳空间110。
磁性组件200设置于容纳空间110内，且磁性组件200与支架100之间形成磁间隙500，该磁间隙500中具有磁力线，也就是说，该磁间隙500中具有磁场。
第一振动组件300设置于支架100的第一侧，第二振动组件400设置于支架100的第二侧，第一振动组件300包括第一音圈310和第一振膜320，第二振动组件400包括第二音圈410和第二振膜420，第一振膜320和第二振膜420均与支架100相连，第一音圈310和第二音圈410均至少部分位于磁间隙500中，第一振动组件300和第二振动组件400为扬声器的发声部件。
具体地，在第一音圈310和第二音圈410通电的情况下，由于通电导线在磁场中受到安培力的作用，所以位于磁间隙500中在第一音圈310至少部分和第二音圈410至少部分受到安培力的作用而产生位移，通过调整第一音圈310和第二音圈410上电流的大小及方向，便可以控制第一音圈310和第二音圈410的位移幅值及位移方向，从而使得第一振动组件300和第二振动组件400通过振动发出声波，且第一振动组件300可发出第一超声波，第二振动组件400可发出第二超声波，第一超声波的频率与第二超声波的频率不相等，第一超声波和第二超声波在空气中传播时可以通过空气的非线性解调为可听声波，该可听声波能够被人耳识别。
本发明实施例中，该扬声器可以发出两束超声波，利用超声波的高度指向性，能够使该两束超声波在空气中定向传播，同时，由于空气的非线性调解作用，使得两束超声波调解为多个声波，其中，通过合理选择扬声器发出两束超声波的频率，以使两束超声波的差频声波为可听声波，例如，扬声器发出两束频率为f1和f2的超声波，受空气非线性交互作用影响，两束频率为f1和f2的超声波调解为f1、f2、f1+f2、f1-f2、2f1、2f2等多束声波，其中，f1-f2为该差频声波。合理选择f1和f2的频率，能够使得f1-f2为可听声波，比如，f1＝41kHz，f2＝40kHz，f1-f2＝1kHz，1kHz频率的声波属于可听声波，且两束超声波经过空气非线性调解后的差频声波仍然具有高度指向性，从而使得该差频声波能够在空气中定向传播，进而使得声音能够定向传播。超声波定向传播的原理均为已知技术，为了文本简洁，在此不再赘述。
在具体的工作过程中，当用户需要私密通话或者为了避免影响周围环境时，用户可以通过操控按钮或语音控制的方式控制第一音圈310和第二音圈410分别接通电信号，在磁间隙500中磁场以及第一音圈310和第二音圈410上电信号的共同作用，使得第一振动组件300和第二振动组件400通过振动发出两束超声波，该两束超声波在空气中解调为可听声波，且定向传播至接听对象，从而使得扬声器发出的声音不会传播至周围环境中，避免 影响周围环境或者被其他人听到，从而提高用户通话的私密性，保护用户的隐私。
本发明实施例公开的扬声器中，第一振动组件300设置于支架100的第一侧，第二振动组件400设置于支架100的第二侧，第一振动组件300包括第一音圈310和第一振膜320，第二振动组件400包括第二音圈410和第二振膜420，第一振膜320和第二振膜420均与支架100相连，第一音圈310和第二音圈410均至少部分位于磁间隙500中。第一振动组件300与第二振动组件400相互独立，两个振动组件分别产生两束超声波，每个振动组件独立工作，且分别产生一束超声波，避免同一个振动组件需要同时振动产生两束超声波，从而防止扬声器在发出两束超声波时产生明显的互调失真，进而使得扬声器的失真较低。
同时，第一振动组件300和第二振动组件400的谐振频率可以不同，以使第一振动组件300的谐振频率与第一超声波的频率更接近，第二振动组件400的谐振频率与第二超声波的频率更接近，对第一音圈310施加与第一振动组件300的谐振频率相同或相近的激励电信号，对第二音圈410施加与第二振动组件400的谐振频率相同或相近的激励电信号，能够使得第一振动组件300在电声转换效率最高的谐振频率位置处发出第一超声波，使得第二振动组件400在电声转换效率最高的谐振频率位置处发出第二超声波，从而使得扬声器的能效较大。
在一种可选的实施例中，容纳空间110和磁性组件200的数量可以均为一个，容纳空间110贯穿支架100，磁性组件200与容纳空间110的内壁之间形成磁间隙500。请再次参考图1，第一振动组件300和第二振动组件400能够共用同一个磁性组件200，减少磁性组件200的数量，从而降低扬声器的成本。同时，一个磁性组件200占用扬声器的空间较小，从而使得扬声器能够做小，以使扬声器的体积较小，满足目前用户对电子器件轻薄化的需求。
具体地，磁性组件200可以包括第一磁性件210和两个第一导磁件220，两个第一导磁件220分别设置于第一磁性件210相背的两侧，且两个第一导磁件220分别与第一振动组件300和第二振动组件400相对设置。由于导磁件的成本通常低于磁性件的成本，因此在本实施例中，在满足磁性组件200与容纳空间110的内壁之间形成磁间隙500的条件下，利用两个第一导磁件220代替部分第一磁性件210，能够使得第一磁性件210的尺寸较小，从而能够降低成本，且第一导磁件220能够较好地与容纳空间110的内壁之间形成磁场较强的磁间隙500，避免影响扬声器正常工作。第一导磁件220的种类可以有多种，例如铁件以及硅钢片等，本发明实施例中对第一导磁件220的种类不做限制。
如上文所述，容纳空间110和磁性组件200的数量可以均为一个，当然，容纳空间110和磁性组件200的数量也可以均为两个，两个容纳空间110分别可以开设于第一侧和第二侧，两个磁性组件200一一对应地设置于两个容纳空间110内，且两个磁性组件200一一对应地与两个容纳空间110的内壁形成磁间隙500。本实施例中，支架100没有被贯穿，从而能够提高支架100的强度，以使支架100的强度较高，进而提高支架100的可靠性，最终提高扬声器的可靠性。
具体地，磁性组件200包括第二磁性件230和第二导磁件240，第二导磁件240设置于第二磁性件230的一侧，且与第一振动组件300或第二振动组件400相对。在满足两个磁性组件200分别与两个容纳空间110的内壁之间形成磁间隙500的条件下，利用第二导 磁件240代替部分的第二磁性件230，能够使得第二磁性件230的尺寸较小，从而能够降低成本，且第二导磁件240能够较好地与容纳空间110的内壁之间形成磁间隙500，避免影响扬声器正常工作。第二导磁件240的种类可以有多种，例如铁件以及硅钢片等，本发明实施例中对第二导磁件240的种类不做限制。
如上文所述，磁间隙500中具有磁力线，为了使磁间隙500中的磁力线较密分布，以使磁间隙500中的磁场较强，在一种可选的实施例中，两个磁性组件200相对的端部可以极性相同，此种排布方式能够使得磁间隙500中的磁感应密度较大，以使磁间隙500中的磁场较强，在第一音圈310和第二音圈410通电的情况下，使得第一音圈310和第二音圈410在磁场较强的磁间隙500中受到的安培力较大，从而能够使得第一振动组件300和第二振动组件400的振动较强。同时，在第一振动组件300和第二振动组件400振动相同的振幅时，第一音圈310和第二音圈410中的电流可以较小，以使扬声器的功耗较小。
为了进一步提高磁间隙500中的磁感应密度，可选地，支架100可以为导磁支架，导磁支架在磁性组件200的作用下具有磁性，从而能够与磁性组件200之间形成磁感应密度较大的磁间隙500，从而能够进一步提高磁间隙500中的磁感应密度。
本发明实施例中，第一振动组件300和第二振动组件400为扬声器的发声部件，且第一振动组件300可发出第一超声波，第二振动组件400可发出第二超声波，具体地，第一振动组件300还可以包括第一球顶330，第一音圈310与第一球顶330相连，第一振膜320与第一球顶330的边沿相连，且第一振膜320与支架100相连，此种结构的第一振动组件300结构简单，方便设置，且第一振动组件300的发声效果较好。
第二振动组件400还可以包括第二球顶430，第二音圈410与第二球顶430相连，第二振膜420与第二球顶430的边沿相连，且第二振膜420与支架100相连。此种结构的第二振动组件400结构简单，方便设置，且第二振动组件400的发声效果较好。具体地，可以通过调节第一振膜320和第二振膜420的材质及形状、第一球顶330和第二球顶430的重量以及第一音圈310和第二音圈410的重量，实现对第一振动组件300和第二振动组件400谐振频率的调节。同时，由于该扬声器需要发出超声波，所以要求第一振膜320和第二振膜420的材质硬度较高，第一球顶330和第二球顶430的重量以及第一音圈310和第二音圈410的重量较轻。
在支架100为导磁支架的情况下，与支架100相连第一振膜320和第二振膜420受支架100磁力的影响，导致第一振动组件300和第二振动组件400较难进行更优的振动，可能导致第一振动组件300和第二振动组件400发出的声音失真。基于此，在一种可选的实施例中，扬声器还可以包括第一非导磁支撑件600和第二非导磁支撑件700，第一非导磁支撑件600设置于第一侧，第一振膜320与第一非导磁支撑件600相连，第二非导磁支撑件700设置于第二侧，第二振膜420与第二非导磁支撑件700相连。在支架100为导磁支架的情况下，第一非导磁支撑件600和第二非导磁支撑件700能够防止第一振膜320和第二振膜420受支架100磁力的影响，以使第一振动组件300和第二振动组件400在振动时能够独立、且不受支架100磁力的影响，从而使得第一振动组件300和第二振动组件400的振动效果较好，防止第一振动组件300和第二振动组件400发出的声音失真。
基于本发明实施例公开的扬声器，本发明实施例还公开一种电子设备，所公开的电子设备包括设备本体800和上文任意实施例所述的扬声器，设备本体800开设有内腔810 和出音孔820，出音孔820与内腔810相连通，扬声器设置于内腔810内。本发明实施例公开的电子设备中，扬声器发出的超声波能够通过出音孔820传播至电子设备外部，以使电子设备的声音能够定向传播。且可以通过调整出音孔820的朝向，以使电子设备的声音能够定向传播至接听对象，以使电子设备发出的声音便能够定向传播至接听对象所在的位置，该声音不会传播至周围环境中，避免影响周围环境或者被其他人听到，从而提高用户通话的私密性，保护用户的隐私。
需要说明的是，该接听对象可以是该电子设备的使用者，也可是该电子设备的使用者所指定声音的接收对象，例如，电子设备的使用者将声音分享给其他人。
具体地，扬声器将内腔810可以分隔为第一内腔和第二内腔，且第一振动组件300朝向第一内腔，第二振动组件400朝向第二内腔，设备本体800开设有第一导音通道和第二导音通道，出音孔820通过第一导音通道与第一内腔相连通，出音孔820通过第二导音通道与第二内腔相连通，以使两束超声波均通过一个出音孔820向着远方传播，从而能够使得声音的传播指向性更强。
在一种可选的实施例中，内腔810的侧壁可以开设有安装槽，扬声器可以设置于安装槽，且扬声器通过泡棉900与安装槽的侧壁相连。此种设置方式较为简单，方便设置。同时，在电子设备受到冲击或在电子设备振动时，泡棉900能够对扬声器起到缓冲的作用，防止扬声器因电子设备受到冲击或电子设备振动而损坏，进而提高电子设备的可靠性。
出音孔820可以在电子设备上通过后加工的方式开设，但是，此种方式会破坏电子设备一体性，导致电子设备的外观美观性较低。可选地，设备本体800可以包括第一功能组件和第二功能组件，第一功能组件安装于第二功能组件，且第一功能组件与第二功能组件之间具有装配间隙，装配间隙形成出音孔820。在电子设备装配的过程中通常会具有装配间隙，利用该装配间隙代替在电子设备上通过后加工的方式开设的出音孔820，从而能够避免在电子设备上开孔，此种方式不会破坏电子设备一体性，进而使得电子设备的外观美观性较高，以使用户体验感较好。
具体地，在电子设备为手机的情况下，第一功能组件可以为壳体，第二功能组件可以为电池盖，第二功能组件还可以为按键，按键与壳体之间通常具有装配间隙，本发明实施例中对形成装配间隙的方式不做限制。
进一步地，出音孔820的数量可以为多个，且多个出音孔820均与内腔810相连通，多个出音孔820能够使较多的超声波传播至电子设备外部，以使电子设备的发声效果较好，进而提高电子设备的用户体验。
本发明实施例公开的电子设备可以是智能手机、平板电脑、电子书阅读器、智能眼镜(例如智能手表)、电子游戏机等设备，本发明实施例不限制电子设备的具体种类。
本发明上文实施例中重点描述的是各个实施例之间的不同，各个实施例之间不同的优化特征只要不矛盾，均可以组合形成更优的实施例，考虑到行文简洁，在此则不再赘述。
以上所述仅为本发明的实施例而已，并不用于限制本发明。对于本领域技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。

Claims (14)

  1. 一种扬声器，包括支架(100)、磁性组件(200)、第一振动组件(300)和第二振动组件(400)，所述第一振动组件(300)设置于所述支架(100)的第一侧，所述第二振动组件(400)设置于所述支架(100)的第二侧，所述第一侧与所述第二侧相背设置，所述第一振动组件(300)包括第一音圈(310)和第一振膜(320)，所述第二振动组件(400)包括第二音圈(410)和第二振膜(420)，所述第一振膜(320)和所述第二振膜(420)均与所述支架(100)相连，所述支架(100)具有容纳空间(110)，所述磁性组件(200)设置于所述容纳空间(110)内，所述磁性组件(200)与所述支架(100)之间形成磁间隙(500)，所述第一音圈(310)和所述第二音圈(410)均至少部分位于所述磁间隙(500)中，所述第一振动组件(300)可发出第一超声波，所述第二振动组件(400)可发出第二超声波，所述第一超声波的频率与所述第二超声波的频率不相等。
  2. 根据权利要求1所述的扬声器，其中，所述容纳空间(110)和所述磁性组件(200)的数量均为一个，所述容纳空间(110)贯穿所述支架(100)，所述磁性组件(200)与所述容纳空间(110)的内壁之间形成所述磁间隙(500)。
  3. 根据权利要求2所述的扬声器，其中，所述磁性组件(200)包括第一磁性件(210)和两个第一导磁件(220)，两个所述第一导磁件(220)分别设置于所述第一磁性件(210)相背的两侧，且两个所述第一导磁件(220)分别与所述第一振动组件(300)和所述第二振动组件(400)相对设置。
  4. 根据权利要求1所述的扬声器，其中，所述容纳空间(110)和所述磁性组件(200)的数量均为两个，两个所述容纳空间(110)分别开设于所述第一侧和所述第二侧，两个所述磁性组件(200)一一对应地设置于两个所述容纳空间(110)内，且两个所述磁性组件(200)一一对应地与两个所述容纳空间(110)的内壁形成所述磁间隙(500)。
  5. 根据权利要求4所述的扬声器，其中，所述磁性组件(200)包括第二磁性件(230)和第二导磁件(240)，所述第二导磁件(240)设置于所述第二磁性件(230)的一侧，且与所述第一振动组件(300)或所述第二振动组件(400)相对。
  6. 根据权利要求4所述的扬声器，其中，两个所述磁性组件(200)相对的端部极性相同。
  7. 根据权利要求1所述的扬声器，其中，所述支架(100)为导磁支架。
  8. 根据权利要求1所述的扬声器，其中，所述第一振动组件(300)还包括第一球顶(330)，所述第一音圈(310)与所述第一球顶(330)相连，所述第一振膜(320)与所述第一球顶(330)的边沿相连，且所述第一振膜(320)与所述支架(100)相连；
    所述第二振动组件(400)还包括第二球顶(430)，所述第二音圈(410)与所述第二 球顶(430)相连，所述第二振膜(420)与所述第二球顶(430)的边沿相连，且所述第二振膜(420)与所述支架(100)相连。
  9. 根据权利要求8所述的扬声器，其中，所述扬声器还包括第一非导磁支撑件(600)和第二非导磁支撑件(700)，所述第一非导磁支撑件(600)设置于所述第一侧，所述第一振膜(320)与所述第一非导磁支撑件(600)相连，所述第二非导磁支撑件(700)设置于所述第二侧，所述第二振膜(420)与所述第二非导磁支撑件(700)相连。
  10. 一种电子设备，包括设备本体(800)和权利要求1至9中任一项所述的扬声器，所述设备本体(800)开设有内腔(810)和出音孔(820)，所述出音孔(820)与所述内腔(810)相连通，所述扬声器设置于所述内腔(810)内。
  11. 根据权利要求10所述的电子设备，其中，所述扬声器将所述内腔(810)分隔为第一内腔和第二内腔，且所述第一振动组件(300)朝向所述第一内腔，所述第二振动组件(400)朝向所述第二内腔，所述设备本体(800)开设有第一导音通道和第二导音通道，所述出音孔(820)通过所述第一导音通道与所述第一内腔相连通，所述出音孔(820)通过所述第二导音通道与所述第二内腔相连通。
  12. 根据权利要求10所述的电子设备，其中，所述内腔(810)的侧壁开设有安装槽，所述扬声器设置于所述安装槽，且所述扬声器通过泡棉(900)与所述安装槽的侧壁相连。
  13. 根据权利要求10所述的电子设备，其中，所述设备本体(800)包括第一功能组件和第二功能组件，所述第一功能组件安装于所述第二功能组件，且所述第一功能组件与所述第二功能组件之间具有装配间隙，所述装配间隙形成所述出音孔(820)。
  14. 根据权利要求10所述的电子设备，其中，所述出音孔(820)的数量为多个，且所述多个出音孔(820)均与所述内腔(810)相连通。
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