WO2011083914A2 - Mini haut-parleur multifonctionnel rectangulaire - Google Patents

Mini haut-parleur multifonctionnel rectangulaire Download PDF

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Publication number
WO2011083914A2
WO2011083914A2 PCT/KR2010/008250 KR2010008250W WO2011083914A2 WO 2011083914 A2 WO2011083914 A2 WO 2011083914A2 KR 2010008250 W KR2010008250 W KR 2010008250W WO 2011083914 A2 WO2011083914 A2 WO 2011083914A2
Authority
WO
WIPO (PCT)
Prior art keywords
vibrator
suspension
rectangular
attached
frame
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/KR2010/008250
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English (en)
Korean (ko)
Other versions
WO2011083914A3 (fr
Inventor
도성환
이상호
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.)
BSE Co Ltd
Original Assignee
BSE Co Ltd
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 BSE Co Ltd filed Critical BSE Co Ltd
Publication of WO2011083914A2 publication Critical patent/WO2011083914A2/fr
Publication of WO2011083914A3 publication Critical patent/WO2011083914A3/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; ELECTRIC HEARING AIDS; 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 a multi-function micro speaker, and more particularly to a rectangular multi-function micro speaker that can use space efficiently.
  • MFD Multi Function Device
  • MFD Multi Function Device
  • a typical multifunctional micro speaker (MFD: 10) has a frame 11, a diaphragm 12 having an edge 12a fixed to the frame 11, and a voice coil attached to the diaphragm 12, as shown in FIG. (13), the yoke 14 elastically supported by the suspension 18 to the frame 11, the permanent magnet 15 attached to the center of the yoke 14, and attached to the permanent magnet 15 It consists of the plate 16 and the cover 17 which become.
  • the permanent magnet 15 is magnetized in the vertical direction and forms a magnetic circuit together with the plate 16 and the yoke 14, and the voids (magnetic gaps) between the yoke 14 and the plate 16 are located in the voids (magnetic gaps). 13) is located.
  • the multi-function micro speaker 10 is designed to have a high natural frequency of the diaphragm 12 and a low natural frequency of the magnetic circuit, and is supported by the suspension 18 when a low frequency driving current is applied to the voice coil 13. It differs from micro speakers in that the magnetic circuit performs the oscillator function.
  • the magnetic circuit does not react because the natural frequency is low, and the diaphragm 12 having a high natural frequency is vibrated.
  • the driving current is generated at a low frequency band (several Hz to 200 Hz) close to the natural frequency of the magnetic circuit, the diaphragm 12 hardly reacts, and only the magnetic circuit causes resonance to vibrate up and down.
  • the conventional vibration method using a single vibrator the diaphragm and the magnetic circuit interfere with each other, causing an abnormal sound.
  • the conventional multifunction microphone has a problem that the space utilization is inferior because the shape is circular. That is, magnetic circuits that operate as vibrators in a single voice coil system generate interference by interfering with the diaphragm, and in the case of multiple voice coil systems, terminals are complicated and driving power is reduced according to separate inputs. There is a problem that an unstable vibration occurs due to the flatness problem.
  • the resonance mode corresponding to the length of each side (x, y) of the quadrangle is increased, thereby increasing the unstable vibration phenomenon.
  • the vibration force is reduced when the vibration is added to control the resonance mode due to the quadrangle, and when the circular magnetic circuit is formed in the rectangular structure, the vibration force is reduced due to mass reduction and asymmetry of the suspension boundary condition. Is reduced.
  • the object of the present invention is to generate a sound and vibration with only one voice coil, but divided into two vibrators by a rectangular structure while minimizing the driving interference of the diaphragm and vibrator It offers square multifunction micro speakers that can reduce component losses and increase space utilization.
  • the rectangular structure requires a smaller back volume than a circular structure of a similar area due to changes in equivalent volume and mechanical compliance, and thus has high utility in a small volume of a mobile product.
  • the present invention is a rectangular frame
  • a square diaphragm having an edge supported by the frame; A square voice coil attached to the square diaphragm; A first suspension having an end fixed to the frame and supporting a first vibrator at a central portion thereof; A first vibrator attached to a central portion of the first suspension; A second suspension having an end fixed to the frame and having a second vibrator attached to the bottom of the center; And a second vibrator attached to a central bottom of the second suspension, wherein the first vibrator and the second vibrator are connected by a magnetic field to compensate for flatness of each suspension.
  • the first vibrator includes a yoke fixed to the first suspension, a first magnet fixed to the yoke, and a plate attached to an upper side of the first magnet, and the second vibrator has a bottom of the second suspension.
  • the first magnet or the second suspension has a rectangular plate shape and has elasticity by a branch, and the width and length of the suspension branch are the same in whole, or
  • the vibration characteristics can be controlled by configuring each of the diagonal pairs AA-BB.
  • the first suspension and the second suspension are constrained by a magnetic field. It can be controlled effectively.
  • the rectangular multifunctional micro speaker has a heavy vibrator (first vibrator) moving with a small displacement and a light vibrator (second vibrator) moving a relatively large displacement at a high speed so that the displacement amplitude of the speaker magnetic circuit is minimized.
  • first vibrator moving with a small displacement
  • second vibrator moving a relatively large displacement at a high speed so that the displacement amplitude of the speaker magnetic circuit is minimized.
  • vibration characteristics can be improved while minimizing changes in the acoustic performance of the speaker.
  • the rectangular multi-function micro speaker according to the present invention has a rectangular structure can improve the efficiency of the layout space.
  • FIG. 1 is a cross-sectional view showing a typical multifunction micro speaker
  • FIG. 2 is a view for explaining the driving principle of a typical multi-function micro speaker
  • FIG. 3 is a combined perspective view of a rectangular multifunction micro speaker according to the present invention.
  • Figure 4 is a perspective view of the incision of the rectangular multifunction micro speaker according to the present invention.
  • FIG. 5 is a cross-sectional view of a square multifunction micro speaker according to the present invention.
  • FIG. 6 is a diagram illustrating a suspension of a rectangular multifunction micro speaker according to the present invention.
  • FIG. 7 is a view for explaining the driving principle of the rectangular multi-function micro-speaker according to the present invention.
  • Figure 3 is a combined perspective view of the rectangular multifunction micro speaker according to the present invention
  • Figure 4 is a cutaway perspective view of the rectangular multifunction micro speaker according to the present invention
  • Figure 5 is a cross-sectional view of the rectangular multifunction micro speaker according to the present invention.
  • the rectangular multifunction micro speaker 100 includes a square frame 102 and a square diaphragm 104 having an edge 104a supported on the frame 102.
  • a voice coil 106 attached to the square diaphragm 104, a first suspension 108 having an end fixed to the frame, and having a first oscillator supported at the central portion thereof, and a yoke attached to the central portion of the first suspension 108.
  • the first vibrator the end portion of which is composed of a 110, a first magnet 112 mounted inside the yoke 110, and a plate 114 attached to the first magnet 112, is fixed to the frame 102. It consists of a second suspension 116 on which a second vibrator is supported at the center portion, a second vibrator made of a second magnet 118 attached to the center bottom of the second suspension 116, and a cover 120.
  • the yoke 110, the first magnet 112, and the plate 114 performing the first vibrator function are elastically supported by the first suspension 108, and the yoke 110 is provided.
  • the voice coil 106 is located in the gap (magnetic gap) between the plate and the plate 114.
  • the voice coil 106 is attached to the bottom surface of the diaphragm 104 having a rectangular plate shape having an edge 104a, and is connected to an external circuit through a terminal not shown so that driving current can flow.
  • the second vibrator function is performed by a second magnet 118 attached to the bottom of the second suspension 116, the first vibrator being heavier in mass than the second vibrator.
  • the first vibrator and the second vibrator compensate for the flatness of the two suspensions by the connection by the magnetic field.
  • the first suspension 108 or the second suspension 116 has a rectangular plate shape, which is elastic by a branch, is influenced by the type and thickness of a material, and is a suspension branch.
  • the width and length of the s) can be configured to be the same in whole or in diagonal pairs AA-BB to control the vibration characteristics.
  • the sound and vibration are reproduced with only one voice coil, the driving interference and the driving force reduction phenomenon of the diaphragm and the vibrator are improved, and the loss of parts (Loss) according to the rectangular structure and space utilization at the customer standard Can be improved.
  • the function of the magnetic circuit is changed from the vibrator to the vibration source to reduce interference with the speaker diaphragm,
  • the magnetic field between the oscillator and the vibrator can compensate for the flatness of multiple suspensions.
  • according to the present invention can increase the vibration force by the connection by the magnetic field between the magnetic circuit and the vibrator, can reduce the vibration noise, and by adjusting only the suspension and magnet of the second vibrator to adjust the resonant frequency and vibration force I can adjust it.

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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)

Abstract

La présente invention a trait à un mini haut-parleur multifonctionnel rectangulaire qui utilise l'espace de façon efficace. Le mini haut-parleur multifonctionnel rectangulaire selon la présente invention inclut : un cadre rectangulaire ; un diaphragme rectangulaire doté d'une arête supportée par le cadre ; une bobine acoustique rectangulaire attachée au diaphragme rectangulaire ; une première suspension, dont une extrémité est fixée au cadre et dont le centre supporte un premier vibreur ; ledit premier vibreur, qui est attaché au centre de la première suspension ; une seconde suspension, dont une extrémité est fixée au cadre et dont le centre inférieur est attaché à un second vibreur ; et ledit second vibreur, qui est attaché au centre inférieur de la seconde suspension. Le premier vibreur et le second vibreur sont connectés l'un à l'autre au moyen d'un champ magnétique afin de compenser la planéité de chacune des suspensions. De plus, selon la présente invention, le mini haut-parleur multifonctionnel rectangulaire permet à un vibreur lourd (le premier vibreur) de se déplacer sur une courte distance et à un vibreur léger (le second vibreur) de se déplacer sur une distance relativement importante à une vitesse rapide, ce qui permet de minimiser l'amplitude le déplacement d'un circuit magnétique du haut-parleur et de maximiser l'amplitude le déplacement d'un vibreur magnétique. De la sorte, le changement de performance acoustique d'un haut-parleur peut être minimisé et ses caractéristiques de vibration peuvent être améliorées.
PCT/KR2010/008250 2010-01-08 2010-11-22 Mini haut-parleur multifonctionnel rectangulaire Ceased WO2011083914A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100001639A KR101109101B1 (ko) 2010-01-08 2010-01-08 사각 다기능 마이크로 스피커
KR10-2010-0001639 2010-01-08

Publications (2)

Publication Number Publication Date
WO2011083914A2 true WO2011083914A2 (fr) 2011-07-14
WO2011083914A3 WO2011083914A3 (fr) 2011-11-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/008250 Ceased WO2011083914A2 (fr) 2010-01-08 2010-11-22 Mini haut-parleur multifonctionnel rectangulaire

Country Status (2)

Country Link
KR (1) KR101109101B1 (fr)
WO (1) WO2011083914A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116528131A (zh) * 2023-06-08 2023-08-01 佛山鋐利电子有限公司 微型扬声器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020015785A (ko) * 2000-08-23 2002-03-02 고성달 피혁의 염색방법
KR101318699B1 (ko) * 2012-03-30 2013-10-18 주식회사 이엠텍 마이크로 스피커
KR101351892B1 (ko) * 2012-05-18 2014-01-22 주식회사 이엠텍 음향변환장치
KR101725728B1 (ko) * 2016-05-30 2017-04-13 김중배 모션 피드백 기능을 갖는 차동 스피커 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100439583B1 (ko) * 2001-12-27 2004-07-12 에스텍 주식회사 진동 및 음향 발생 스피커
KR100542928B1 (ko) * 2003-03-28 2006-01-11 에스텍 주식회사 진동 및 음향 겸용 스피커
JP2007043230A (ja) * 2005-07-29 2007-02-15 Pioneer Electronic Corp スピーカ装置
JP4997173B2 (ja) * 2008-05-13 2012-08-08 ホシデン株式会社 電気音響変換器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116528131A (zh) * 2023-06-08 2023-08-01 佛山鋐利电子有限公司 微型扬声器

Also Published As

Publication number Publication date
KR101109101B1 (ko) 2012-01-31
WO2011083914A3 (fr) 2011-11-03
KR20110081460A (ko) 2011-07-14

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