WO2011162457A1 - Micro haut-parleur du type à montage d'amplificateur - Google Patents

Micro haut-parleur du type à montage d'amplificateur Download PDF

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Publication number
WO2011162457A1
WO2011162457A1 PCT/KR2010/008391 KR2010008391W WO2011162457A1 WO 2011162457 A1 WO2011162457 A1 WO 2011162457A1 KR 2010008391 W KR2010008391 W KR 2010008391W WO 2011162457 A1 WO2011162457 A1 WO 2011162457A1
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
suspension
voice coil
speaker
micro
Prior art date
Application number
PCT/KR2010/008391
Other languages
English (en)
Korean (ko)
Inventor
김규동
정진우
Original Assignee
주식회사 비에스이
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 주식회사 비에스이 filed Critical 주식회사 비에스이
Publication of WO2011162457A1 publication Critical patent/WO2011162457A1/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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/028—Structural combinations of loudspeakers with built-in power amplifiers, e.g. in the same acoustic enclosure

Definitions

  • the present invention relates to a micro speaker, and more particularly, to an amplifier mounted type micro speaker having an amplifier mounted therein, which is used in a portable terminal such as a mobile phone.
  • a speaker is a device that converts an electrical signal into vibration of the air so that a person can feel the sound, and according to the principle and method of converting an electrical signal into a sound wave, a dynamic type and an electrostatic type ( It can be divided into ⁇ ⁇ ).
  • small micro speakers are mainly used.
  • a dynamic micro-speaker drive current flows through a terminal to a voice coil
  • an electric field formed by the voice coil and a magnetic field formed by the magnetic circuit interact with each other to generate a sound by vibrating a diaphragm.
  • FIG. 1 is an exploded perspective view of a micro speaker according to the prior art.
  • the microspeaker 10 includes a frame 1 through which the inside penetrates, a cover 2 for closing the open top surface of the frame 1, and a yoke for closing the open bottom surface of the frame 1. (3), a magnet (4) inserted into the frame (1) to form a magnetic field, and a plate (5) mounted on the magnet (4) to concentrate the magnetic field of the magnet (4) in a specific direction; The voice coil 6 vibrating in the height direction in the cavity 4a of the magnet 4 and the suspension vibrating in the vertical direction along the voice coil 6 interposed between the plate 5 and the cover 2. (7) and a diaphragm 8 provided between the cover 2 and the suspension 7.
  • FIG. 2 is a schematic diagram of a circuit for driving a micro speaker according to the prior art.
  • An amplifier 21 for amplifying a voice signal is mounted on the main board 20 of the portable terminal.
  • the amplifier 21 is connected to a power supply line, an audio signal line and a control signal line, respectively.
  • the audio signal amplified by the amplifier 21 is transferred to the suspension 7 of the micro speaker 10 through a separate signal line 30 and finally to the voice coil 6.
  • the voice signal amplified by the amplifier 21 mounted on the main board 20 of the portable terminal is a suspension (7) through a signal line 30 is provided separately And then to the voice coil (6).
  • a direct current magnetic field flows, and when a signal current is applied to the voice coil 6 inserted into the magnetic field, an alternating magnetic field is generated.
  • the voice coil 6 moves upward and downward by the principle of a magnet pulling the NN pole and pulling the NS pole in the case of the NS pole.
  • the suspension 7 By the movement of the voice coil 6, the suspension 7 also vibrates up and down. As a result, as the center plate of the suspension 7 vibrates up and down, a small wave is formed, and when the small wave contacts the human ear, the eardrum in the human ear vibrates and a sound is heard.
  • the amplifier (AMP) and the speaker mounted on the main board of the portable terminal are configured independently. Therefore, since the audio signal amplified through the amplifier must be delivered to the speaker using a separate signal line, not only does the loss of the voice signal occur in the signal line, but also the electromagnetic interference (EMI) noise increases. There is a problem that the distortion rate is raised.
  • EMI electromagnetic interference
  • An object of the present invention is to solve the above-described problem, and to provide an amplifier-mounted micro speaker which can not only prevent loss of a voice signal but also prevent increase of EMI noise and increase of distortion.
  • the present invention provides a voice coil moving in an up and down direction, a suspension vibrating in an up and down direction by movement of the voice coil, and transmitting a voice signal to the voice coil, and vibration by up and down vibration of the suspension.
  • a voice coil moving in an up and down direction
  • a suspension vibrating in an up and down direction by movement of the voice coil, and transmitting a voice signal to the voice coil, and vibration by up and down vibration of the suspension.
  • an amplifier for amplifying the voice signal transmitted to the voice coil is mounted on the damper plate or the diaphragm of the suspension.
  • the present invention further includes an amplifier cover in close contact with the damper plate or the diaphragm to protect the amplifier.
  • the suspension is formed with a signal input unit for receiving an electrical signal from the outside to the amplifier.
  • the amplifier-mounted micro speaker since the amplifier is mounted on the suspension or the diaphragm in the speaker, a separate signal line for connecting the speaker and the amplifier chip is not required, thereby reducing the transmission efficiency of the voice signal resulting from the signal line. Increasing EMI noise and distortion can be prevented. As a result, the efficiency of the speaker can be maximized.
  • FIG. 1 is an exploded perspective view of a micro speaker according to the prior art.
  • FIG. 2 is a schematic diagram of a circuit for driving a micro speaker according to the prior art
  • Figure 3 is an exploded perspective view of the amplifier-mounted micro-speaker according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of an amplifier mounted micro speaker according to an embodiment of the present invention.
  • FIG. 5 is a perspective view showing a state in which the amplifier is mounted on the suspension.
  • FIG. 6 is a schematic diagram of a circuit for driving an amplifier mounted micro speaker according to an embodiment of the present invention.
  • micro speaker 110 frame
  • FIG 3 is an exploded perspective view of the amplifier-mounted micro-speaker according to an embodiment of the present invention
  • Figure 4 is a cross-sectional view of the amplifier-mounted micro-speaker according to an embodiment of the present invention.
  • the amplifier-mounted micro speaker 100 includes a frame 110, a cover 120, a yoke 130, a magnet 140, a plate 150, a voice coil 160, and a suspension. 170, a diaphragm 180, and an amplifier 190.
  • the frame 110 forms a skeleton of the micro speaker according to the present invention, and a center portion thereof is formed to penetrate up and down.
  • the frame 110 may be formed in a hexagonal, circular or elliptical shape in addition to the rectangular shape.
  • the cover 120 closes the open upper surface of the frame 110.
  • the cover 120 has a through hole 120a so that the sound generated during the vibration of the suspension 170 can be effectively transmitted to the outside.
  • the shape of the cover 120 corresponds to the shape of the frame 110.
  • the yoke 130 closes the open bottom of the frame 110.
  • the shape of the yoke 130 corresponds to the shape of the frame 110 like the cover 120.
  • the magnet 140 generates a magnetic field having a constant intensity and direction, and is composed of an external magnet 141 and an internal magnet 142.
  • the foreign magnet 141 is inserted into the inside of the frame 110 and is formed so that the inside penetrates up and down.
  • the inner magnet 142 is inserted into the outer magnet 141 to generate a magnetic field having the same direction as the outer magnet 141.
  • the plate 150 is mounted on the upper portion of the magnet 140 to concentrate the magnetic field generated from the magnet 140 in a specific direction, and consists of an outer magnetic plate 151 and an inner magnetic plate 152.
  • the magnetic plate 151 is mounted on the upper portion of the magnetic magnet 141 and is formed to penetrate up and down, concentrating the magnetic field generated from the magnetic magnet 141 in a specific direction.
  • the magnetic plate 152 is mounted on the upper portion of the magnetic magnet 142 and inserted into the magnetic plate 151 to concentrate the magnetic field generated in the magnetic magnet 142 in a specific direction.
  • the voice coil 160 is capable of vertical movement in the air gaps 140a and 150a formed between the magnetic magnet 141 and the magnetic magnet 142 and between the magnetic plate 151 and the magnetic plate 152. Is installed.
  • the voice coil 160 generates an electric field having a specific direction and intensity according to an electric voice signal transmitted from the outside, and then reacts with a magnetic field generated by the external magnet 141 and the magnetic magnet 142 to generate an external magnet 141. ) And the magnetic magnet 142 to vibrate in a direction orthogonal to each other (up and down in the drawing).
  • the suspension 170 is formed in the terminal plate 171 and the terminal plate 171 interposed between the diaphragm 180 and the outer magnetic plate 151 while forming a through hole 171a therein, and the yoke 130.
  • a signal input unit 171b for receiving an electrical signal from the outside is formed at the side of the terminal plate 171, and a plurality of input terminals 171c are formed at the end of the signal input unit 171b.
  • the input terminal 171c includes a sound source terminal, a power supply terminal, a ground terminal, and a control terminal.
  • the diaphragm 180 has a through hole 180a formed therein, an upper surface facing the cover 120 protrudes convexly, and a bottom surface of the diaphragm 180 contacts the terminal plate 171 and the damper plate 172.
  • the amplifier 190 is mounted on the upper surface of the damper plate 172 of the suspension 170 to amplify the electrical voice signal input from the outside.
  • the amplifier 190 is protected by the amplifier cover 191.
  • FIG 5 is a perspective view showing a state in which the amplifier is mounted on the damper plate of the suspension.
  • the amplifier 190 is composed of a plurality of chips to be mounted on the damper plate 172 of the suspension 170, thereby solving the problems caused by the speaker and the amplifier separately configured as in the prior art. That is, since the speaker and the amplifier are integrally formed, there is no need for a separate signal line for connecting the speaker and the amplifier as in the related art, so that problems such as a loss of the speech signal caused by the signal line, an increase in the EMI noise, and an increase in the distortion rate are caused. Can be solved.
  • the amplifier cover 191 is adhered to the upper surface of the damper plate 172 in a state of covering the amplifier 190, thereby protecting the amplifier 190 from the outside. That is, the amplifier cover 191 protects the amplifier 190 from shocks that may be caused from the outside through the through holes 180a and the through holes 120a formed in the diaphragm 180 and the cover 120, respectively.
  • the amplifier cover 191 is formed such that the chip insertion groove 191a into which the chips of the amplifier 190 are inserted protrudes upward. The lower part of the chip insertion groove 191a is opened to allow the chip to be inserted.
  • the amplifier 190 may be mounted on the bottom of the diaphragm, and in this case, the amplifier cover 191 is also closely adhered to the bottom of the diaphragm. To protect the amplifier 190.
  • a through hole may be formed in the damper plate.
  • FIG. 6 is a schematic diagram of a circuit for driving an amplifier-mounted micro speaker according to an embodiment of the present invention.
  • the micro speaker 100 is configured such that the amplifier 190 is mounted on the damper plate 172 of the suspension 170, so that a circuit for driving the micro speaker is configured differently from the prior art.
  • the electrical voice signal transmitted from the main board 200 of the portable terminal is transmitted to the amplifier 190 through the terminal plate 171 formed on the suspension 170 of the micro speaker 100 and then amplified to be a voice coil ( 160).
  • a magnetic field having a constant intensity and direction is generated in the external magnet 141 and the magnetic magnet 142.
  • the magnetic plate 151 and the magnetic plate 152 concentrate the magnetic field generated in the magnetic magnet 141 and the magnetic magnet 142 in a specific direction.
  • the amplifier 190 sets the amplification degree (level) according to the control signal. Amplifies the received signal and transfers it to the voice coil 160.
  • the voice coil 160 When the signal amplified by the amplifier 190 is transmitted to the voice coil 160, the voice coil 160 generates an electric field having a direction and intensity according to the voice signal.
  • the voice coil 160 when the electric field generated by the voice coil 160 by the electric voice signal amplified by the amplifier 190 inside the speaker has the same pole as the magnetic field generated by the magnetic magnet 141 and the magnetic magnet 142. In this case, the voice coil 160 is pushed up by the repulsive force and raised, and when the voice coil 160 has different poles, it is lowered by the attraction force.
  • the suspension 170 coupled thereto also vibrates up and down, and as a result, the damper plate 172 of the suspension 170 vibrates up and down to act as a diaphragm to generate sound. Let's go. That is, the damper plate 172 vibrates in the up and down direction to form a small wave, and when the small wave touches the human ear, the eardrum in the human ear vibrates to hear sound.
  • the voice signal input from the outside is amplified by the amplifier 190 built in the speaker and then transferred to the voice coil 160. Therefore, since a separate signal line for connecting the amplifier 190 and the voice coil 160 is not necessary, the transmission efficiency of the voice signal generated from the signal line connecting the amplifier and the speaker as in the prior art, AMP noise and distortion is initiated The problems are gone.

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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

La présente invention concerne un haut-parleur de microphone du type à montage d'amplificateur qui est utilisé dans des appareils portatifs et analogues et dans lequel est monté un amplificateur. La présente invention concerne un micro haut-parleur comportant une bobine acoustique qui se déplace de haut en bas ; une suspension qui vibre de haut en bas dû au déplacement de la bobine acoustique et transmet un signal audio à la bobine acoustique, et un diaphragme qui vibre dû à la vibration de haut en bas de la suspension ; un amplificateur pour amplifier le signal audio transmis à la bobine acoustique étant monté sur une plaque d'amortisseur de la suspension ou sur le diaphragme. Étant donné que l'amplificateur est ainsi monté sur la suspension ou sur le diaphragme, un conducteur de signal n'est pas nécessaire pour connecter le haut-parleur et l'amplificateur et il est donc possible d'empêcher, entre autres, une réduction induite de signal/fil dans l'efficacité de transmission de signal acoustique, de bruit d'interférence électromagnétique accru et de distorsion accrue.
PCT/KR2010/008391 2010-06-22 2010-11-25 Micro haut-parleur du type à montage d'amplificateur WO2011162457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0059102 2010-06-22
KR1020100059102A KR101054304B1 (ko) 2010-06-22 2010-06-22 앰프 실장형 마이크로 스피커

Publications (1)

Publication Number Publication Date
WO2011162457A1 true WO2011162457A1 (fr) 2011-12-29

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PCT/KR2010/008391 WO2011162457A1 (fr) 2010-06-22 2010-11-25 Micro haut-parleur du type à montage d'amplificateur

Country Status (3)

Country Link
KR (1) KR101054304B1 (fr)
CN (2) CN102300147B (fr)
WO (1) WO2011162457A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2770752A3 (fr) * 2013-02-22 2014-11-12 Em-tech. Co., Ltd. Micro-haut-parleur de type aimant annulaire interne

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101054304B1 (ko) * 2010-06-22 2011-08-08 주식회사 비에스이 앰프 실장형 마이크로 스피커
KR101351893B1 (ko) 2011-08-11 2014-01-17 주식회사 이엠텍 고출력 마이크로 스피커용 서스펜션 및 이를 구비하는 고출력 마이크로 스피커
KR101907519B1 (ko) * 2018-02-21 2018-10-12 주식회사 블루콤 음향출력과 진동기능을 제공하는 스피콤
CN111294710B (zh) * 2018-12-07 2023-03-24 现代自动车株式会社 用于车辆的扬声器单元
CN109905827B (zh) * 2019-03-21 2021-01-29 维沃移动通信有限公司 一种振动发声装置及移动终端

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000013877A (ja) * 1998-06-22 2000-01-14 Heart Domein:Kk スピーカ
KR20060087464A (ko) * 2005-01-28 2006-08-02 소니온 호르젠스 에이/에스 미니 멀티-라우드스피커 모듈
KR20070088495A (ko) * 2005-09-21 2007-08-29 마츠시타 덴끼 산교 가부시키가이샤 스피커용 댐퍼와, 이를 이용하는 스피커
JP2008098988A (ja) * 2006-10-12 2008-04-24 Audio Technica Corp ヘッドホン

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101040562A (zh) * 2005-09-21 2007-09-19 松下电器产业株式会社 扬声器阻尼器以及使用此阻尼器的扬声器
KR101054304B1 (ko) * 2010-06-22 2011-08-08 주식회사 비에스이 앰프 실장형 마이크로 스피커

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000013877A (ja) * 1998-06-22 2000-01-14 Heart Domein:Kk スピーカ
KR20060087464A (ko) * 2005-01-28 2006-08-02 소니온 호르젠스 에이/에스 미니 멀티-라우드스피커 모듈
KR20070088495A (ko) * 2005-09-21 2007-08-29 마츠시타 덴끼 산교 가부시키가이샤 스피커용 댐퍼와, 이를 이용하는 스피커
JP2008098988A (ja) * 2006-10-12 2008-04-24 Audio Technica Corp ヘッドホン

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2770752A3 (fr) * 2013-02-22 2014-11-12 Em-tech. Co., Ltd. Micro-haut-parleur de type aimant annulaire interne
US9185494B2 (en) 2013-02-22 2015-11-10 Em-Tech Co., Ltd. Inner magnet type microspeaker

Also Published As

Publication number Publication date
CN202085300U (zh) 2011-12-21
CN102300147A (zh) 2011-12-28
CN102300147B (zh) 2015-03-18
KR101054304B1 (ko) 2011-08-08

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