WO2018040397A1 - Haut-parleur à bobine mobile - Google Patents

Haut-parleur à bobine mobile Download PDF

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Publication number
WO2018040397A1
WO2018040397A1 PCT/CN2016/111131 CN2016111131W WO2018040397A1 WO 2018040397 A1 WO2018040397 A1 WO 2018040397A1 CN 2016111131 W CN2016111131 W CN 2016111131W WO 2018040397 A1 WO2018040397 A1 WO 2018040397A1
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WO
WIPO (PCT)
Prior art keywords
conductive material
material layer
moving coil
diaphragm
front cover
Prior art date
Application number
PCT/CN2016/111131
Other languages
English (en)
Chinese (zh)
Inventor
曹惠娴
姜舒
杨鑫峰
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2018040397A1 publication Critical patent/WO2018040397A1/fr

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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to an electroacoustic conversion device, and more particularly to a moving coil speaker.
  • the voice coil working under low frequency conditions will produce excessive displacement, while the excessive displacement will cause the distortion to rise sharply, and even the obvious voice coil and magnetic circuit system will be rubbed, which will cause the speaker Irreversible damage.
  • the current solution is to use an intelligent power amplifier control unit to control the power fed to the speaker product, and to reduce the power when the speaker vibration displacement exceeds a predetermined level.
  • This requires knowledge of the vibration displacement of the speaker.
  • a voice coil using a speaker and an external circuit are used as sensors, and real-time measurement of the speaker model and real-time monitoring of the input signal are performed to monitor the vibration displacement of the speaker.
  • the premise of this solution is to assume that the speaker has a theoretical model, such as diaphragm stiffness coefficient Kms, vibration system mass Mms, force drive factor Bl, damping factor Rms, DC impedance Re, inductance Le, and so on.
  • the present invention provides a moving coil speaker, which includes a front cover, a vibration system, and a magnetic circuit system in order from top to bottom;
  • the vibration system includes a diaphragm, a centering piece, and a voice coil that are joined together from top to bottom, and the diaphragm includes a diaphragm body portion with a folding ring and a center coupled to the lower portion of the diaphragm body portion a diaphragm reinforcement portion of the position; wherein the diaphragm reinforcement portion comprises a first conductive material layer, and the centering support sheet comprises a second conductive material layer;
  • the magnetic circuit system includes a center washer, a center magnet, and a yoke that are joined together from top to bottom;
  • the front cover includes a third conductive material layer
  • the first conductive material layer and the second conductive material layer serve as a movable electrode plate
  • the third conductive material layer serves as a first fixed electrode plate
  • the center washer, the center magnet, and the yoke yoke serve as a second fixed pole
  • the board constitutes a capacitor structure for detecting a vibration displacement of the moving coil type speaker.
  • the diaphragm reinforcing portion and the centering piece are bonded by a conductive adhesive and the conductive adhesive turns on the first conductive material layer and the second conductive material Or a layer between the diaphragm reinforcing portion and the centering piece is bonded by an insulating adhesive.
  • the center washer, the center magnet and the magnetic yoke are adhesively fixed by a conductive adhesive or an insulating adhesive.
  • the front cover is provided with a front cover pad, and the front cover pad is provided with a connection terminal, and the first fixed electrode plate is connected to the external circuit through the connection terminal.
  • the yoke is a basin frame
  • the second fixed plate is connected to an external circuit through a bottom of the basin frame.
  • the centering piece is a flexible circuit board.
  • the movable plate is connected to an external circuit through the centering piece.
  • the centering piece is a central hollow structure.
  • the area of the first conductive material layer is larger than the area of the second conductive material layer.
  • the moving coil speaker further includes a housing that houses the vibration system and the magnetic circuit system, and an edge of the centering piece is fixed to the housing.
  • the moving coil speaker of the present invention provides a capacitor structure for detecting the actual vibration displacement of the vibration system, and the capacitor structure can be used for real-time and accurate detection of the vibration displacement of the moving coil speaker product.
  • FIG. 1 is a schematic cross-sectional view of a moving coil speaker according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing a moving coil speaker according to a second embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing a moving coil type speaker according to a third embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a moving coil speaker according to a fourth embodiment of the present invention.
  • Dynamic coil loudspeakers typically include a vibrating system, a magnetic circuit system, and a housing that houses a vibrating system including a diaphragm and a voice coil coupled to one side of the diaphragm.
  • the magnetic circuit system typically includes a washer and a magnet. And a magnetic yoke, the voice coil is suspended in a magnetic gap formed by the magnetic circuit system.
  • the diaphragm generally includes a diaphragm body portion and a diaphragm reinforcement portion coupled to a side of the diaphragm body portion.
  • the diaphragm body portion generally has a folding ring, and a fixing portion for fixing to the housing is disposed at a periphery of the folding ring.
  • the diaphragm reinforcement can be, for example, DOME.
  • the magnetic circuit system may be a dual magnetic circuit structure, the magnet including a central magnet disposed at a central position of the yoke and a side magnet surrounding the central magnet, the wavy including a center waist corresponding to the central magnet and surrounding The edge of the central Huashi, the integral structure of the central magnet and the central huasi and the integral structure of the side magnet and the edge huasi are provided with a magnetic gap, and the voice coil is disposed in the magnetic gap.
  • the magnetic yoke may be a basin frame, and a central magnet is disposed at a center of the bottom of the basin frame, and a center washer is disposed corresponding to the central magnet, and the central magnet and the central structure of the center washer are interposed between the base frame and the basin frame.
  • a magnetic gap is provided, and the voice coil is disposed in the magnetic gap.
  • the invention designs a capacitor structure for detecting the actual vibration displacement of the moving coil type speaker vibration system, and the capacitor is composed of a movable plate and a fixed plate opposite to the movable plate, wherein the movable plate is a vibration system. A part vibrates with the vibration system. When the vibration system vibrates, the distance between the movable plate and the fixed plate changes, thereby causing a change in the capacitance of the capacitor, monitoring the change in the capacitance of the capacitor or monitoring the current change of the circuit connected to the capacitor. The actual vibration displacement of the vibration system can be calculated.
  • FIG. 1 the structure of the moving coil speaker provided by the first embodiment of the present invention is illustrated:
  • the moving coil speaker includes a vibration system, a magnetic circuit system located below the vibration system, and a housing that houses the vibration system and the magnetic circuit system.
  • the vibration system includes a diaphragm that is joined together from top to bottom, a centering piece 13, and a voice coil 16.
  • the diaphragm includes a diaphragm body portion 15 having a folded ring and a diaphragm reinforcing portion 11 coupled to a central position below the diaphragm body portion 15.
  • the center of the centering piece 13 is a hollow structure, and the edge of the centering piece 13 is fixed to the casing.
  • the diaphragm reinforcement portion 11 includes a first conductive material layer, and the centering support sheet 13 includes a second conductive material layer.
  • the diaphragm reinforcement portion 11 and the centering support sheet 13 are bonded by a conductive adhesive 12, And the conductive adhesive 12 turns on the first conductive material layer and the second conductive material layer.
  • the diaphragm reinforcing portion 11 as a whole may be made of a conductive material, for example, the diaphragm reinforcing portion 11 is made of a metal material.
  • the magnetic circuit system includes a center washer 18, a center magnet 19, and a basin frame 17 that are joined together from top to bottom, and the three are bonded together by a conductive adhesive.
  • the first conductive material layer and the second conductive material layer together serve as a movable plate, and the center washer 18, the center magnet 19, and the basin frame 17 together serve as a fixed plate, and constitute a capacitor for detecting the vibration displacement of the moving coil speaker. structure.
  • the diaphragm reinforcing portion 11 has a first conductive material layer, and the first conductive material layer and the second conductive material layer are connected by the conductive adhesive 12, and the first conductive material layer and the first conductive material layer The two conductive material layers together form a movable plate, which increases the area of the movable plate, thereby increasing the capacitance of the capacitor structure and improving the sensitivity of the capacitor structure.
  • the voice coil 16 drives the diaphragm and the centering piece 13 to vibrate together, thereby causing a change in the capacitance of the movable plate and the fixed plate.
  • the actual value of the vibration system can be calculated by calculating the change value of the capacitor.
  • the actual displacement of the vibration system can also be calculated by indirectly monitoring the current change of the circuit connected to the capacitor.
  • the smart power amplifier control unit can be connected to the capacitor to monitor the actual displacement of the vibration system and reduce the input power of the moving coil speaker when needed to protect the moving coil speaker from being too distorted or physically damaged.
  • the wire 101 can be drawn from the bottom of the basin frame 17, so that the fixed plate can be connected to the external circuit through the bottom of the basin frame 17.
  • the centering piece 13 is a flexible circuit board, and the wire 102 can be led out from the edge of the centering piece 13, so that the movable plate is grounded or connected to an external circuit through the centering piece 13, and the capacitance detecting chip can be placed at The flexible circuit board.
  • the centering slabs serve multiple functions simultaneously, reducing the number of components required for the speaker product, thereby reducing cost and reducing the space requirements for product design.
  • the centering piece itself has the function of maintaining the concentric vibration of the vibrating parts of the vibration system, reducing the polarization, and then the centering piece as a part of the movable plate can be used to detect the vibration displacement of the vibration system, and at the same time, centering
  • the support piece can feed back the electrical signal of the capacitor to the external detection system.
  • the acoustic performance of the speaker is provided while satisfying the design requirements of the movable plate of the capacitive sensor. Can adjust to introduce more adjustable items. Specifically, the acoustic performance of the speaker can be adjusted by selecting different materials for the diaphragm reinforcement, especially in the high frequency range. The acoustics of the speaker can also be adjusted by designing the size of the central hollow portion of the centering segment. performance.
  • the magnetic circuit system may also be the aforementioned dual magnetic circuit structure, with the center washer, the center magnet, and the yoke closest to the vibration system as the fixed plates.
  • FIG. 2 the structure of the moving coil speaker provided by the second embodiment of the present invention is illustrated:
  • the moving coil speaker includes a vibration system, a magnetic circuit system located below the vibration system, and a housing that houses the vibration system and the magnetic circuit system.
  • the vibration system includes a diaphragm that is joined together from top to bottom, a centering piece 23, and a voice coil 26.
  • the diaphragm includes a diaphragm body portion 25 having a folded ring and a diaphragm reinforcing portion 21 coupled to a center position below the diaphragm body portion 25.
  • the center of the centering piece 23 is a hollow structure, and the edge of the centering piece 23 is fixed to the casing.
  • the diaphragm reinforcement portion 21 includes a first conductive material layer, and the centering support sheet 23 includes a second conductive material layer.
  • the diaphragm reinforcement portion 21 and the centering support sheet 23 are bonded by an insulating adhesive 22 therebetween. together.
  • the diaphragm reinforcing portion 21 as a whole may be made of a conductive material, for example, the diaphragm reinforcing portion 21 is made of a metal material.
  • the magnetic circuit system includes a center washer 28, a center magnet 29, and a basin frame 27 that are joined together from top to bottom, and the three are bonded together by a conductive adhesive.
  • the first conductive material layer and the second conductive material layer serve as movable plates, and the center washer 28, the center magnet 29, and the basin frame 27 serve as fixed plates, and constitute a capacitor structure for detecting vibration displacement of the moving coil speaker.
  • the diaphragm reinforcing portion 21 has a first conductive material layer, and the first conductive material layer and the second conductive material layer together serve as a movable plate.
  • the capacitance structure is very sensitive and can meet the needs of detecting the vibration displacement of the speaker.
  • the wire 201 can be drawn from the bottom of the basin frame 27 so that the fixed plate can be connected to the external circuit through the bottom of the basin frame 27.
  • the centering piece 23 is a flexible circuit board, and the wire 202 can be taken out from the edge of the centering piece 23, so that the movable plate is grounded or connected to an external circuit through the centering piece 23, and the capacitance detecting chip can be disposed at The flexible circuit board.
  • the centering slabs serve multiple functions simultaneously, reducing the number of components required for the speaker product, thereby reducing cost and reducing the space requirements for product design.
  • the centering piece itself has the function of maintaining the concentric vibration of the vibrating parts of the vibration system, reducing the polarization, and then the centering piece as a part of the movable plate can be used to detect the vibration displacement of the vibration system, and at the same time, centering
  • the support piece can feed back the electrical signal of the capacitor to the external detection system.
  • the acoustic performance of the speaker can be adjusted by selecting different materials for the diaphragm reinforcement, especially in the high frequency range.
  • the acoustics of the speaker can also be adjusted by designing the size of the central hollow portion of the centering segment. performance.
  • the insulating adhesive is selected to bond the diaphragm reinforcing portion and the centering piece together, and the conductive adhesive is used in the same manner as the first embodiment, and the sensitive capacitor structure can also be realized and increased.
  • An optional range of adhesives are optionally used.
  • FIG. 3 the structure of the moving coil speaker provided by the third embodiment of the present invention is illustrated:
  • the moving coil speaker includes, in order from top to bottom, a front cover, a vibration system, and a magnetic circuit system, and the moving coil type speaker further includes a housing that is coupled with the front cover.
  • the vibration system includes a diaphragm that is joined together from top to bottom, a centering piece 33, and a voice coil 36.
  • the diaphragm includes a diaphragm body portion 35 having a folded ring and a diaphragm reinforcing portion 31 coupled to a center position below the diaphragm body portion 35.
  • the center of the centering piece 33 is a hollow structure, and the edge of the centering piece 33 is fixed to the casing.
  • the diaphragm reinforcement portion 31 includes a first conductive material layer, and the centering support sheet 33 includes a second conductive material layer, and the diaphragm reinforcement portion 31 and the centering support sheet 33 are bonded together.
  • the diaphragm reinforcing portion 31 as a whole can be made of a conductive material, for example, the diaphragm reinforcing portion 31 is composed of Made of metal.
  • the magnetic circuit system includes a center washer 38, a center magnet 39, and a basin frame 37 that are joined together from top to bottom.
  • the front cover includes a third layer of conductive material, that is, at least a portion of the front cover is made of a conductive material, for example, the lower surface of the front cover is a metal plate 30.
  • the front cover is entirely made of a conductive material, for example, the front cover is a single piece of metal plate.
  • the first conductive material layer and the second conductive material layer together serve as a movable plate, and the third conductive material layer serves as a fixed plate, and constitutes a capacitor structure for detecting a vibration displacement of the moving coil speaker.
  • the diaphragm reinforcing portion 31 and the centering support piece 33 may be bonded by a conductive adhesive as in the first embodiment, and the conductive adhesive turns on the first conductive material layer and the second conductive material.
  • the material layer may be bonded to the diaphragm reinforcing portion 31 and the centering piece 33 by an insulating adhesive as in the second embodiment.
  • a front cover pad may be provided on the front cover, a terminal is provided on the front cover pad, and the wire 302 is taken out from the terminal to connect the fixed plate to an external circuit.
  • the centering piece 33 is a flexible circuit board, and the wire 301 can be drawn from the edge of the centering piece 33 such that the movable plate is grounded or connected to an external circuit through the centering piece 33, and the capacitance detecting chip can be disposed at The flexible circuit board.
  • the centering slabs serve multiple functions simultaneously, reducing the number of components required for the speaker product, thereby reducing cost and reducing the space requirements for product design.
  • the centering piece itself has the function of maintaining the concentric vibration of the vibrating parts of the vibration system, reducing the polarization, and then the centering piece as a part of the movable plate can be used to detect the vibration displacement of the vibration system, and at the same time, centering
  • the support piece can feed back the electrical signal of the capacitor to the external detection system.
  • the acoustic performance of the speaker can be adjusted by selecting different materials for the diaphragm reinforcement, especially in the high frequency range.
  • the acoustics of the speaker can also be adjusted by designing the size of the central hollow portion of the centering segment. performance.
  • FIG. 4 the structure of the moving coil speaker provided by the fourth embodiment of the present invention is illustrated:
  • the moving coil speaker includes a front cover, a vibration system, and a magnetic circuit system in order from top to bottom, and the moving coil type speaker further includes a housing that is coupled with the front cover.
  • the vibration system includes a diaphragm that is joined together from top to bottom, a centering piece 43, and a voice coil 46.
  • the diaphragm includes a diaphragm body portion 45 having a folded ring and a diaphragm reinforcing portion 41 coupled to a center position below the diaphragm body portion 45.
  • the center of the centering piece 43 is a hollow structure, and the edge of the centering piece 43 is fixed to the casing.
  • the diaphragm reinforcing portion 41 includes a first conductive material layer, and the centering piece 43 includes a second conductive material layer, and the diaphragm reinforcing portion 41 and the centering piece 43 are bonded together.
  • the diaphragm reinforcing portion 41 as a whole may be made of a conductive material, for example, the diaphragm reinforcing portion 41 is made of a metal material.
  • the magnetic circuit system includes a center washer 48, a center magnet 49, and a basin frame 47 that are bonded together from top to bottom.
  • the front cover includes a third layer of conductive material, that is, at least a portion of the front cover is made of a conductive material, for example, the lower surface of the front cover is a metal plate 40.
  • the front cover is entirely made of a conductive material, for example, the front cover is a single piece of metal plate.
  • the first conductive material layer and the second conductive material layer together serve as a movable plate, and the third conductive material layer serves as a first fixed plate, and the central washer 48, the center magnet 49, and the basin frame 47 collectively serve as a second fixed plate.
  • the first fixed plate, the movable plate, and the second fixed plate constitute a capacitor structure for detecting a vibration displacement of the moving coil speaker.
  • the diaphragm reinforcing portion 41 and the centering piece 43 may be bonded by a conductive adhesive as in the first embodiment, and the conductive adhesive turns on the first conductive material layer and the second conductive material.
  • the material layer may be bonded to the diaphragm reinforcing portion 41 and the centering piece 43 by an insulating adhesive as in the second embodiment.
  • a front cover pad may be provided on the front cover, a terminal is provided on the front cover pad, and the wire 401 is taken out from the terminal to connect the first fixed plate to an external circuit.
  • the bonding of the three can be conducted through the conductive adhesive, and the wire 403 can be led out from the bottom of the basin frame 47, so that the second fixed plate can be It is connected to an external circuit through the bottom of the basin frame 47.
  • the centering piece 43 is a flexible circuit board which can be grounded or connected to an external circuit by the centering piece 43.
  • the wires 402 and 404 can be drawn from the edge of the centering piece 43 such that the first capacitive structure composed of the first fixed plate and the movable plate can feed back signals to the external circuit through the wire 401 and the wire 402, the second fixed plate
  • the second capacitor structure composed of the movable plate can feed back the signal to the external capacitor through the wire 403 and the wire 404.
  • the capacitance detecting chip may be disposed on the flexible circuit board.
  • the centering slabs serve multiple functions simultaneously, reducing the number of components required for the speaker product, thereby reducing cost and reducing the space requirements for product design.
  • the centering piece itself has the function of maintaining the concentric vibration of the vibrating parts of the vibration system, reducing the polarization, and then the centering piece as a part of the movable plate can be used to detect the vibration displacement of the vibration system, and at the same time, centering
  • the support piece can feed back the electrical signal of the capacitor to the external detection system.
  • the acoustic performance of the speaker can be adjusted by selecting different materials for the diaphragm reinforcement, especially in the high frequency range.
  • the acoustics of the speaker can also be adjusted by designing the size of the central hollow portion of the centering segment. performance.
  • the embodiment fully utilizes the structural characteristics of the speaker and its system, and designs two fixed plates to further improve the sensitivity of the capacitor structure and increase the space utilization, which is beneficial to the integration of the speaker and other functional blocks.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un haut-parleur à bobine mobile, le haut-parleur à bobine mobile comprenant un couvercle avant, un système de vibration et un système de circuit magnétique en séquence de haut en bas. Le système de vibration comprend un diaphragme vibrant, un croisillon et une bobine acoustique combinés ensemble de haut en bas. Le diaphragme vibrant comprend un corps de diaphragme vibrant avec un entourage, et une partie de renforcement de diaphragme vibrant, la partie de renforcement de diaphragme vibrant comprenant une première couche de matériau électriquement conducteur et le croisillon comprenant une seconde couche de matériau électriquement conducteur. Le système de circuit magnétique comprend une rondelle de ressort centrale, un aimant central et une culasse magnétiquement conductrice combinés ensemble de haut en bas. Le couvercle avant comprend une troisième couche de matériau électriquement conducteur. La première couche de matériau électriquement conducteur et la seconde couche de matériau électriquement conducteur servent de plaque mobile, la troisième couche de matériau électriquement conducteur sert de première plaque fixe, et la rondelle de ressort centrale, l'aimant central et la culasse magnétiquement conductrice servent de seconde plaque fixe, formant ainsi une structure de condensateur pour détecter un déplacement de vibration. Avec la structure de condensateur fournie par la présente invention, le déplacement de vibration du haut-parleur à bobine mobile peut être surveillé. (FIG. 4)
PCT/CN2016/111131 2016-08-31 2016-12-20 Haut-parleur à bobine mobile WO2018040397A1 (fr)

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Application Number Priority Date Filing Date Title
CN201610784289.XA CN106211000A (zh) 2016-08-31 2016-08-31 一种动圈式扬声器
CN201610784289.X 2016-08-31

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN108848437A (zh) * 2018-07-26 2018-11-20 歌尔股份有限公司 扬声器模组
CN108966095A (zh) * 2018-08-07 2018-12-07 张永春 扬声器单元及扬声器装置
CN111988710A (zh) * 2020-08-11 2020-11-24 歌尔股份有限公司 振动系统及具有该振动系统的发声单体
CN112104933A (zh) * 2020-08-27 2020-12-18 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112243183A (zh) * 2019-07-19 2021-01-19 歌尔股份有限公司 磁势扬声器及其电子设备
CN113423046A (zh) * 2021-06-09 2021-09-21 歌尔股份有限公司 扬声器用振膜、扬声器用振膜制备方法及发声装置
CN114979912A (zh) * 2022-07-29 2022-08-30 歌尔股份有限公司 发声装置和电子设备

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CN106211000A (zh) * 2016-08-31 2016-12-07 歌尔股份有限公司 一种动圈式扬声器
CN106162470B (zh) * 2016-08-31 2023-11-07 歌尔股份有限公司 一种动圈式扬声器
CN111669695B (zh) * 2020-07-17 2022-01-04 维沃移动通信有限公司 喇叭振幅检测方法及电子设备
CN111866678A (zh) * 2020-08-17 2020-10-30 精拓丽音科技（北京）有限公司 一种扬声器

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CN102802104A (zh) * 2012-08-16 2012-11-28 何永斌 一种自带变面积式电容振动传感器的动圈式扬声器
CN104780489A (zh) * 2015-03-31 2015-07-15 歌尔声学股份有限公司 用于检测扬声器振动位移的结构和声电互转的双效装置
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CN108848437A (zh) * 2018-07-26 2018-11-20 歌尔股份有限公司 扬声器模组
CN108966095A (zh) * 2018-08-07 2018-12-07 张永春 扬声器单元及扬声器装置
CN112243183A (zh) * 2019-07-19 2021-01-19 歌尔股份有限公司 磁势扬声器及其电子设备
CN112243183B (zh) * 2019-07-19 2023-08-04 歌尔股份有限公司 磁势扬声器及其电子设备
CN111988710A (zh) * 2020-08-11 2020-11-24 歌尔股份有限公司 振动系统及具有该振动系统的发声单体
CN112104933A (zh) * 2020-08-27 2020-12-18 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN113423046A (zh) * 2021-06-09 2021-09-21 歌尔股份有限公司 扬声器用振膜、扬声器用振膜制备方法及发声装置
CN114979912A (zh) * 2022-07-29 2022-08-30 歌尔股份有限公司 发声装置和电子设备
CN114979912B (zh) * 2022-07-29 2022-11-25 歌尔股份有限公司 发声装置和电子设备

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