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WO2018170938A1 - Haut-parleur de type à aimant mobile - Google Patents

Haut-parleur de type à aimant mobile Download PDF

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Publication number
WO2018170938A1
WO2018170938A1 PCT/CN2017/078747 CN2017078747W WO2018170938A1 WO 2018170938 A1 WO2018170938 A1 WO 2018170938A1 CN 2017078747 W CN2017078747 W CN 2017078747W WO 2018170938 A1 WO2018170938 A1 WO 2018170938A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
vibrator
voice coil
fixed
diaphragm
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/078747
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English (en)
Chinese (zh)
Inventor
汲鹏程
祖峰磊
许超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
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 Goertek Inc filed Critical Goertek Inc
Publication of WO2018170938A1 publication Critical patent/WO2018170938A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular to a moving magnetic speaker capable of realizing the function of a speaker and a linear vibration motor.
  • the speaker is an important acoustic component of portable electronic equipment. It is used to convert electrical signals and sound signals. It is an energy conversion device. Linear vibration motor is one of the motors and an important component of portable electronic devices. A function to achieve vibration alerting.
  • the speakers used in portable electronic devices are mostly moving coil speakers. Due to the principle of the dynamic speaker, the high frequency transient response is poor, and the high frequency performance is low, which is difficult to meet the current Hi-Fi (high fidelity) equipment. Performance requirements.
  • the speaker and the vibration motor are usually packaged in a single housing to form a two-in-one product to reduce the space occupied, but when using a moving coil speaker to make a two-in-one product, only The Z-direction motor can be made, that is, the vibration direction of the vibration motor is vertical, which makes the thickness of the product large and cannot meet the requirements of ultra-thin portable electronic equipment.
  • the technical problem to be solved by the present invention is to provide a moving magnetic speaker that has a high-frequency transient response and can realize the function of a linear vibration motor, and has a small thickness and a small footprint.
  • the present invention provides a moving magnetic speaker including a housing in which a diaphragm and a vibrator disposed in parallel with the diaphragm are housed; the vibrator includes a voice coil; the diaphragm is adjacent to the vibrator One a drive magnet is fixed to the side, and the voice coil is energized to form an electromagnet, and an interaction force is generated with the drive magnet to drive the diaphragm to vibrate; the motor is fixed to the side of the vibrator
  • the voice coil is fixed on the basin frame, and the two ends of the basin frame are respectively fixed with elastic supporting members; the elastic supporting members have an elastic deformation space in a horizontal direction; and the magnetic wire of the motor magnet cuts the The voice coil pushes the vibrator to vibrate in the horizontal direction.
  • the driving magnet is provided with two pieces, the motor magnet is located between the two driving magnets; the voice coil is provided with two, respectively corresponding to two pieces of the driving magnet; The magnetization directions of the driving magnets are opposite, and the energizing currents of the two of the voice coils are opposite.
  • the vibrator further includes a magnet disposed between the two voice coils and disposed opposite to the motor magnet, the magnetization direction of the magnet being vertical, and a magnetization direction of the magnet and the motor magnet The magnetization direction is reversed.
  • the diaphragm comprises a folding ring at the edge and a vibration plate fixed at a middle portion of the folding ring, and the driving magnet and the motor magnet are both fixed on the vibration plate.
  • the two sides of the two voice coils are disposed with a magnetic conductive component, and the two magnetic conductive components are identical in structure and oppositely disposed, and the structure of the magnetic conductive component is adapted to the structure of the voice coil. .
  • two centers of the voice coils are respectively provided with an armature, and the two armatures are respectively disposed opposite to the two driving magnets, and the armature changes its own according to a change of a current direction through the voice coil.
  • a magnetization direction; the armature and the voice coil together form the electromagnet.
  • the voice coil, the armature and the magnet are both fixed on the basin frame to jointly form the vibrator.
  • the housing comprises an upper shell and a lower shell joined together; the diaphragm is fixed on the upper shell, and a sound hole is arranged in a middle portion of the upper shell; the vibrator passes through the elastic support The piece is mounted on the lower case.
  • the bottom of the lower case protrudes from the two ends of the lower case with a fixing portion, and one end of the flexible printed circuit board for electrically connecting the voice coil and the external circuit is attached to the fixing portion.
  • the flexible printed circuit board is attached to the fixing portion at a portion outside the lower case.
  • the upper side of the edge portion of the diaphragm is fixed with a backing ring, and the backing ring is fixed on the top of the upper shell The inside of the department.
  • the two elastic supporting members are identical in structure and symmetrically arranged with respect to a diagonal of the vibrator;
  • the elastic supporting member comprises two elastic arms integrally connected at one end, and the elastic arms are made of a flat structural wire.
  • the width of the wire in the vertical direction is greater than the width thereof in the lateral direction;
  • the unconnected ends of the two elastic arms are fixedly connected to the basin frame and the lower casing, respectively, and
  • the connection point between the basin frame and the lower case is located on the same side of the center line in the vibration direction of the vibrator.
  • the basin frame comprises a bottom portion of a rectangular plate shape, and each of the four corner portions of the bottom of the basin frame is provided with a mounting portion perpendicular to the bottom of the basin frame, and the ends of the elastic arms are fixedly attached thereto. On the installation section.
  • the moving magnetic speaker of the present invention comprises a casing, wherein the casing houses a diaphragm and a vibrator, and the vibrator includes a voice coil; a side of the diaphragm close to the vibrator is fixed with a driving magnet and a motor magnet; and the voice coil is energized to form an electromagnet, An interaction force is generated with the driving magnet to drive the diaphragm to sound; the voice coil is fixed on the basin frame, and elastic support members are respectively fixed at both ends of the basin frame; the elastic support member has an elastic deformation space in the horizontal direction; the magnetic feeling of the motor magnet The voice coil is cut in a line to push the vibrator to vibrate in the horizontal direction.
  • the speaker of the present invention is a moving magnetic speaker.
  • the voice coil When the voice coil passes the alternating audio current, the voice coil forms an electromagnet and interacts with the driving magnet. Since the voice coil is fixed in the vertical direction, the driving magnet will Vibrating up and down, the diaphragm vibrates up and down along with the driving magnet, thereby inducing the sound of the air to realize the function of the speaker, and the ampere force generated by the original voice coil cutting magnetic line becomes the interaction force between the electromagnet and the permanent magnet.
  • the high-frequency transient response of the moving coil speaker is improved, and the high-frequency performance is improved; when the voice coil passes the alternating current signal, the magnetic line of the motor magnet cuts the energized voice coil, sound The ring is subjected to the action of the Lorentz force to generate an X-direction motion, thereby realizing the vibration of the vibrator in the horizontal direction, that is, the vibration function of the motor is realized.
  • the dynamic magnetic speaker of the invention has good high-frequency transient response, can meet the acoustic performance requirements of the high-fidelity device, and can realize the function of the linear vibration motor, and has small thickness and small occupied space.
  • the driving magnet is provided with two pieces, the motor magnet is located between the two driving magnets; the voice coil is provided with two corresponding to the two driving magnets; the magnetization directions of the two driving magnets are opposite, and the two voice coils are energized The flow direction is opposite.
  • Two drive magnets and two voice coils are provided to make the diaphragm more uniform, improve the vibration stability and balance of the diaphragm, and prevent polarization of the diaphragm.
  • the vibrator further includes a magnet disposed between the two voice coils opposite to the motor magnet, the magnetization direction of the magnet is vertical, and the magnetization direction of the magnet is opposite to the magnetization direction of the motor magnet.
  • the magnet can shift the magnetic induction line of the motor magnet to both sides, so that it passes more than two voice coils, which improves the working efficiency of the vibration motor.
  • the magnet and the motor magnet repel each other, which can effectively prevent the driving magnet and the vibrator.
  • the phase adsorption plays a role in balancing the vibration position and vibration space of the diaphragm, and improves the stability and reliability of the product.
  • the two armatures are respectively disposed opposite to the two driving magnets, and the armature changes its magnetization direction according to the change of the current direction through the voice coil.
  • the voice coil When the voice coil is energized, the armature can be magnetized, and the voice coil and the armature together form an electromagnet, which increases the strength of the magnetic field generated by the voice coil, enhances the force with the driving magnet, and improves the sensitivity of the speaker.
  • each of the two voice coils is separated from each other with a magnetic conductive member, the magnetic conductive member can gather the magnetic field generated by the voice coil inward to reduce magnetic leakage, thereby effectively increasing the magnetic field strength, and further improving the sensitivity of the speaker.
  • the elastic supporting member comprises two elastic arms integrally connected at one end, the elastic arms are made of a flat structural wire, and the width of the wires in the vertical direction is More than its width in the lateral direction, the elastic support of such a structure occupies a small vibration space, and can increase the strength of the elastic support member in the vertical direction, can better bear the weight of the vibrator, and improve the stability and balance of the vibration of the vibrator. Sexuality prevents polarization and noise generation of the vibrator during vibration.
  • the moving magnetic speaker of the present invention solves the technical problems of high-frequency transient response difference and large thickness of the speaker and motor combo products in the prior art, and the moving magnetic speaker of the present invention High-frequency transient response, small thickness, high performance, high stability and reliability, can meet the performance requirements of high-fidelity equipment.
  • FIG. 1 is a schematic exploded view of a moving magnetic speaker according to the present invention.
  • Figure 2 is a cross-sectional structural view showing a moving magnetic speaker according to the present invention.
  • FIG. 3 is a schematic view showing the working principle of a speaker of a moving magnetic speaker according to the present invention.
  • Figure 4 is a schematic view showing the operation of the motor of the moving magnetic speaker according to the present invention.
  • the orientations referred to in this specification refer to the orientation in which the sounding unit is located, and the azimuth refers to the orientation in which the vibrator is located.
  • the inner side referred to in this specification refers to the side close to the center of the moving magnetic speaker, and the outer side refers to the side away from the center of the moving magnetic speaker.
  • the X direction referred to in this specification refers to the horizontal direction, and the Z direction refers to the vertical direction. .
  • a moving magnetic speaker is a rectangular parallelepiped structure including a casing and a diaphragm and a vibrator housed in the casing, and the diaphragm is arranged in parallel with the vibrator.
  • the casing includes an upper casing 12 and a lower casing 10 which are vertically joined together, the upper casing 12 is a box-like structure in which the lower end is open, and the lower casing 10 is a box-like structure in which the upper end is open, and the open end of the upper casing 12 is fastened under On the open end of the shell 10.
  • the diaphragm is fixedly mounted on the upper casing 12, and the sound hole 120 is disposed in the middle of the upper casing 12.
  • the vibrator is suspended in the space enclosed by the upper casing 12 and the lower casing 10 by two elastic supporting members 39, and two elastic supporting members. 39 is fixedly connected to the lower case 10.
  • the drive magnet 24 and the motor magnet 26 are fixed to the middle portion of the diaphragm near the side of the vibrator, and the magnetization directions of the drive magnet 24 and the motor magnet 26 are both vertical.
  • the diaphragm includes a folding ring 22 at the edge and a vibration plate 20 fixed in the middle of the folding ring 22.
  • the driving magnet 24 and the motor magnet 26 are both fixed on the vibration plate 20, and the upper side of the edge portion of the folding ring 22 is fixed.
  • the vibrator includes a voice coil 34.
  • the voice coil 34 has a flat structure and is horizontally fixed on a basin frame 30.
  • the two elastic support members 39 are fixedly coupled to the two ends of the basin frame 30, and one end of the elastic support member 39 is fixedly connected to the basin frame 30. Bomb The other end of the sexual support member 39 is fixedly coupled to the lower casing 10 to suspend the vibrator in the space enclosed by the upper casing 12 and the lower casing 10.
  • an electromagnet is formed, and an interaction force is generated with the driving magnet to drive the diaphragm to vibrate, and the magnetic flux of the motor magnet 26 cuts the voice coil 34 to push the vibrator to vibrate in the horizontal direction.
  • the driving magnet 24 is provided with two pieces, the motor magnet 26 is located between the two driving magnets 24, and the voice coil 34 is also provided with two, respectively, and two driving magnets 24.
  • the magnetization directions of the two driving magnets 24 are opposite, and the energizing current directions of the two voice coils 34 are also opposite, as shown in FIG.
  • the two driving magnets 24 respectively correspond to the centers of the two voice coils 34, and the motor magnets 26 simultaneously correspond to the side closer to the two voice coils 34.
  • the center position of the two voice coils 34 is further provided with an armature 36.
  • the two armatures 36 are respectively disposed opposite to the two driving magnets 24.
  • the two armatures 36 are respectively passed according to FIG.
  • the direction of the current of the corresponding voice coil 34 changes its own magnetization direction, and the two armatures 36 respectively form two electromagnets with the corresponding voice coil 34.
  • a magnetically permeable member 32 is disposed on each of the sides of the two voice coils 34, and the two magnetically permeable members 32 are identical in structure and disposed opposite each other.
  • the structure of the magnetically permeable member 32 is adapted to the structure of the voice coil 34 on the side of the center line, that is, the magnetically permeable member 32 is adapted to the structure of the half voice coil 34, which covers only half of the side surface of the voice coil 34. And half of the upper surface, able to gather the magnetic field to the center to reduce leakage.
  • a further preferred vibrator of the present embodiment further includes a magnet 38 disposed between the two voice coils 34.
  • the magnet 38 is also fixed to the basin frame 30, and the magnetization direction of the magnet 38 is also vertical.
  • the magnetization direction of the magnet 38 is opposite to the magnetization direction of the motor magnet 26, as shown in FIG.
  • the size of the motor magnet 26 in the vibration direction of the vibrator is larger than the size of the magnet 38 in the vibration direction of the vibrator, and the magnet 38 corresponds to the center position of the motor magnet 26.
  • the basin frame 30 includes a rectangular bottom portion, and the four corner portions of the bottom portion are each provided with a mounting portion 300 that is perpendicular to the bottom portion and extends upward.
  • the two voice coils 34, the two armatures 36 and the magnets 38 are fixed to the bottom of the basin frame 30 to form a vibrator.
  • the ends of the elastic support members 39 are fixed to the mounting portion 300.
  • the two elastic support members 39 have the same structure.
  • the elastic support member 39 includes Two elastic arms, each of which is made of a flat-structured wire, and the width of the wire in the vertical direction is greater than the width in the lateral direction, and the two elastic arms are integrally connected at one end of the same side, and The angle between the two elastic arms is an angle. In the embodiment, the angle is an acute angle, and the ends of the two elastic arms are not fixedly connected to the mounting portion 300 and the lower casing 10 of the basin frame 30, respectively, and the basin frame
  • the connection point between the 30 and the lower case 10 is located on the same side of the center line in the vibration direction of the vibrator.
  • the two elastic supporting members 39 are symmetrically arranged with respect to the diagonal of the vibrator, that is, the two elastic supporting members 39 are respectively fixedly and fixedly coupled to the two mounting portions 300 on the same diagonal line of the bottom of the basin frame 30.
  • the bottom of the lower casing 10 protrudes from the two ends of the lower casing 10 with a fixing portion 100, and the lower ends of the lower casing sidewalls at the two ends are respectively provided with a horizontally extending escape hole 102.
  • Two FPCBs (flexible printed circuit boards) 40 for electrically connecting the two voice coils 34 and the external circuit respectively pass through the two escape holes 102, and one end of the FPCB 40 electrically connected to the voice coil 34 is attached and fixed to the inner side of the side wall.
  • a portion of the FPCB 40 located outside the lower case 10 is attached and fixed to the fixing portion 100.
  • the working principle of the moving magnetic speaker of the present invention is as follows:
  • Figure 3 shows the working principle of the speaker.
  • the vibration direction of the sounding unit is vertical.
  • ⁇ indicates that the current direction is perpendicular to the paper surface, Indicates that the current direction is perpendicular to the paper facing inward.
  • the upper end of the drive magnet 24 on the left side is set to the S pole, the lower end is the N pole, and the drive magnet 24 on the right side has the N pole at the upper end and the S pole at the lower end.
  • the current direction of the two voice coils 34 is as shown. According to the right hand rule, the voice coil 34 on the left side produces an upward magnetic field. As indicated by the arrow 52, the armature 36 is located at the center of the voice coil 34.
  • the upper end is N pole, repels the drive magnet 24 on the left side, and the movement direction of the drive magnet 24 on the left side is upward, as indicated by arrow 56; at this time, the voice coil 34 on the right side generates a downward magnetic field.
  • the upper end of the armature 36 at the center of the voice coil 34 is S pole, repels the drive magnet 24 on the right side, and the drive magnet 24 on the right side also moves upward, as indicated by the arrow 54.
  • the diaphragm is thus moved upwards as indicated by arrow 58.
  • the diaphragm will move downward to achieve vibration and sound.
  • Fig. 4 shows the working principle of the motor.
  • the vibrating direction of the vibrator is horizontal.
  • the upper end of the motor magnet 26 is set to the S pole and the lower end is the N pole.
  • the upper end of the magnet 38 is the N pole and the lower end is the S pole.
  • the magnetic field directions of the magnet 26 and the magnet 38 are respectively indicated by arrows 62 and 60, and the magnet 38 divides the magnetic line of the motor magnet 26 to the sides, more through the two voice coils 34, as indicated by arrows 64 and 66.
  • the Lorentz force received by the voice coil 34 on the left side can be decomposed into two forces to the left and the upward direction
  • the Lorentz force received by the voice coil 34 on the right side can be decomposed into directions.
  • the input current signal of the voice coil can be adjusted to control whether the product works in the speaker mode or the vibration motor mode, and even the speaker and the vibration motor work simultaneously. This combines the speaker with the vibration motor to greatly increase the space utilization of the portable electronics while maintaining the same performance.

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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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

L'invention concerne un haut-parleur de type à aimant mobile comprenant un boîtier, une membrane vibrante et un vibreur disposé en parallèle avec la membrane vibrante qui est logée dans le boîtier, le vibreur comprenant une bobine acoustique ; un aimant d'entraînement est fixé à un côté de la membrane vibrante, à proximité du vibreur ; un électroaimant formé après que la bobine acoustique a été électrisée génère une force interactive avec l'aimant d'entraînement de façon à entraîner la membrane vibrante à vibrer et à émettre un son ; un aimant de moteur est également fixé à un côté de la membrane vibrante, à proximité du vibreur ; la bobine acoustique est fixée sur un panier, et un élément de support élastique est respectivement fixé à deux extrémités du panier ; l'élément de support élastique est pourvu d'un espace de déformation élastique le long d'une direction horizontale ; et des lignes d'induction magnétique de l'aimant de moteur coupent la bobine acoustique, poussant le vibreur à vibrer le long d'une direction horizontale. Le haut-parleur de type à aimant mobile, selon la présente invention, présente une bonne réponse transitoire de haute fréquence tout en ayant également une faible épaisseur, présente une stabilité et une fiabilité élevées et est capable de répondre aux exigences de performance d'un dispositif Hi-Fi.
PCT/CN2017/078747 2017-03-18 2017-03-30 Haut-parleur de type à aimant mobile Ceased WO2018170938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710162677.9 2017-03-18
CN201710162677.9A CN106658315B (zh) 2017-03-18 2017-03-18 动磁式扬声器

Publications (1)

Publication Number Publication Date
WO2018170938A1 true WO2018170938A1 (fr) 2018-09-27

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PCT/CN2017/078747 Ceased WO2018170938A1 (fr) 2017-03-18 2017-03-30 Haut-parleur de type à aimant mobile

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CN (1) CN106658315B (fr)
WO (1) WO2018170938A1 (fr)

Cited By (1)

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CN115002627A (zh) * 2022-05-30 2022-09-02 深圳市拓普联科技术股份有限公司 扬声器

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CN107454521A (zh) * 2017-07-25 2017-12-08 苏州逸巛声学科技有限公司 一种受话器及其装配方法
CN109640204A (zh) * 2019-01-30 2019-04-16 中山市万华电子有限公司 一种防水喇叭
CN111800714B (zh) * 2019-07-23 2022-03-25 深圳市豪恩声学股份有限公司 扬声器及电子设备
CN110572758B (zh) * 2019-09-16 2021-04-13 Oppo广东移动通信有限公司 偏光片、显示屏、电子设备
WO2021056294A1 (fr) * 2019-09-25 2021-04-01 常州阿木奇声学科技有限公司 Appareil à cornet
CN113747317B (zh) * 2020-05-29 2024-04-09 歌尔股份有限公司 发声装置和电子设备
CN113747311B (zh) * 2020-05-29 2024-04-09 歌尔股份有限公司 发声装置和电子设备
CN113747316B (zh) * 2020-05-29 2024-04-09 歌尔股份有限公司 发声装置和电子设备
CN113747321B (zh) * 2020-05-29 2024-04-09 歌尔股份有限公司 扬声器单体和电子设备
CN114257895B (zh) * 2020-09-21 2025-02-28 歌尔股份有限公司 发声装置和电子设备
CN111935612B (zh) * 2020-10-13 2021-01-22 歌尔股份有限公司 扬声器
CN116170724A (zh) * 2021-11-24 2023-05-26 华为技术有限公司 动铁激励器和音频设备

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CN201490864U (zh) * 2009-07-13 2010-05-26 英赛特公司 动磁式连续变频电磁振动发生器
JP2011228863A (ja) * 2010-04-16 2011-11-10 Panasonic Corp スピーカ装置
CN201957234U (zh) * 2011-01-18 2011-08-31 嘉兴市金利达电子有限公司 一种振动音腔
CN105472491A (zh) * 2016-01-04 2016-04-06 歌尔声学股份有限公司 一种具有振动功能和发声功能的多功能装置
CN205946144U (zh) * 2016-05-30 2017-02-08 上海超彩通信科技有限公司 动磁式振动扬声器

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Publication number Priority date Publication date Assignee Title
CN115002627A (zh) * 2022-05-30 2022-09-02 深圳市拓普联科技术股份有限公司 扬声器

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CN106658315A (zh) 2017-05-10
CN106658315B (zh) 2018-09-18

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