WO2008004729A1 - Vibreur - Google Patents

Vibreur Download PDF

Info

Publication number
WO2008004729A1
WO2008004729A1 PCT/KR2006/005562 KR2006005562W WO2008004729A1 WO 2008004729 A1 WO2008004729 A1 WO 2008004729A1 KR 2006005562 W KR2006005562 W KR 2006005562W WO 2008004729 A1 WO2008004729 A1 WO 2008004729A1
Authority
WO
WIPO (PCT)
Prior art keywords
motion unit
vibrator
motion
coil
magnet
Prior art date
Application number
PCT/KR2006/005562
Other languages
English (en)
Inventor
Yun Gyu Kang
Original Assignee
Yea Il Electronics 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
Priority claimed from KR1020060063934A external-priority patent/KR100804023B1/ko
Priority claimed from KR1020060112142A external-priority patent/KR20080043503A/ko
Application filed by Yea Il Electronics Co., Ltd. filed Critical Yea Il Electronics Co., Ltd.
Publication of WO2008004729A1 publication Critical patent/WO2008004729A1/fr

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means

Definitions

  • the present invention relates to a vibrator and, more particularly, to a vibrator which, in response to an electric signal applied thereto, vibrates according to variation in the magnetic force of a coil and the resultant interaction of attraction and repulsion between the coil and a magnet.
  • portable mobile communication terminals such as a mobile phone (a cellular phone and a Personal Communication Systems (PCS) phone), a Personal Digital Assistant (PDA), notebooks and others have an electronic acoustic transducer installed therein in order to be able to output sound.
  • a mobile phone a cellular phone and a Personal Communication Systems (PCS) phone
  • PDA Personal Digital Assistant
  • notebooks and others have an electronic acoustic transducer installed therein in order to be able to output sound.
  • the electronic acoustic transducer is in general classified into a device capable of outputting voices and sounds, such as a speaker, a receiver, a buzzer and others, and a vibrator outputting stereo sound by generating them using a vibration force.
  • the vibrator is typically divided into a motor-driven type that generates vibrations using the centrifugal force of a rotating pin eccentrically fixed to the rotating shaft of a motor, and a solenoid type that generates vibrations using an oscillator linearly moving in a coil that generates magnetic force when an electric signal (power source) is applied thereto.
  • a solenoid has the literal meaning of "a cylindrical coil of wire", which is called a solenoid coil, and means a transducer that transforms electrical energy into mechanical energy using magnetic force generated in an air gap.
  • the solenoid generally includes a magnetic circuit constituted by a metallic oscillator moving around a coil in response to magnetic force, a surrounding case, and a magnetic material corresponding to a core in the coil, whereby, in response to current applied to the coil, magnetic flux flows in the magnetic circuit surrounding the coil, which produces a magnetic force in the oscillator to thus operate the solenoid.
  • the vibrator using such a solenoid has advantages in that the consumption of vibration energy is low, and upon the application of an AC signal, mechanical resonance occurs due to the physical characteristics of the magnetic circuit and the oscillator at a specified frequency, so that the vibration force can be changed, that is, the magnitude of the vibration force can be regulated according to the resonant frequency. On the contrary, it also has problems in that constitutional elements are very complex, and thus the manufacturing cost is increased and productivity is decreased.
  • the motor-driven type vibrator in particular, a coin type vibrator, obtains vibration force through eccentric rotating motion or linear reciprocating motion.
  • the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a vibrator capable of increasing vibration force through double oscillation of an oscillator while increasing vibration transfer efficiency through the concentration of vibration force on a case.
  • a vibrator which, in response to an electric signal applied thereto, vibrates according to variation in the magnetic force of a coil and a resultant interaction of attraction and repulsion between the coil and a magnet.
  • the vibrator includes: a first motion unit, supporting either one of the coil or the magnet, oscillating through the interaction therebetween; and a second motion unit supporting the first motion unit in such a fashion that the first motion unit repetitively moves up and down, the second motion unit repetitively moving up and down due to the motion force transferred from the first motion unit.
  • the first motion unit movably supporting either the coil or the magnet, starts repetitive up/down motion.
  • the motion force is transferred to the second motion unit, which supports the first motion unit, so that the second motion unit also starts repetitive up/down motion.
  • the motion force is transferred to the second motion unit supporting the first motion unit so that the second motion unit also starts repetitive up/down motion.
  • the repetitive up/down motion force of the second motion unit is added to the repetitive up/down motion force of the first motion unit to thereby increase the vibration force.
  • the present invention can makeaudible output and vibration output using a single structure, thereby considerably simplifying the constitutional elements and the structure of the multi-functional sound output device.
  • FIG. 1 is an exploded perspective view of the construction of the present invention
  • FIG. 2 is a cross sectional view of the construction of the present invention.
  • FIGS. 3 and 4 are cross sectional views illustrating operational positions of the present invention.
  • FIG. 5 is a cross sectional view illustrating another embodiment of the present invention.
  • FIG. 6 is a cross sectional view illustrating still another embodiment of the present invention.
  • FIG. 7 is a cross sectional view illustrating a further embodiment of the present invention.
  • FIG. 8 is a cross sectional view illustrating yet another embodiment of the present invention.
  • FIG. 9 is a cross sectional view of FIG. 8;
  • FIG. 10 is a cross sectional view illustrating a variation to the embodiment shown in
  • FIG. 8; [29] FIGS. 11, 12 and 13 are cross sectional views illustrating a still further embodiment of the present invention; and [30] FIGS. 14 and 15 are cross sectional views illustrating yet a further embodiment of the present invention.
  • FIG. 1 is an exploded perspective view of the construction of the present invention
  • FIG. 2 is a cross sectional view of the construction of the present invention
  • FIGS. 3 and 4 are cross sectional views illustrating operational positions of the present invention
  • FIG. 5 is a cross sectional view illustrating another embodiment of the present invention
  • FIG. 6 is a cross sectional view illustrating still another embodiment of the present invention
  • FIG. 7 is a cross sectional view illustrating a further embodiment of the present invention
  • FlG. 8 is a cross sectional view illustrating yet another embodiment of the present invention
  • FlG. 9 is a cross sectional view of FlG. 8, FlG.
  • FIGS. 11, 12 and 13 are cross sectional views illustrating a still further embodiment of the present invention
  • FIGS. 14 and 15 are cross sectional views illustrating yet a further embodiment of the present invention, wherein a reference numeral 11 denotes a first motion unit, a reference numeral 12 denotes a second motion unit, a reference numeral 12a denotes a resilient frame, a reference numeral 13 denotes a support member, and a reference numeral 13a denotes a supporting slant portion.
  • the vibrator 10 of this embodiment in response to an electric signal applied thereto, vibrates according to variation in the magnetic force of a coil C and the resultant interaction of attraction and repulsion between the coil C and a magnet M.
  • the vibrator 10 also includes a first motion unit 11 supporting either the coil C or the magnet M, oscillating through interaction therebetween, and a second motion unit 12 supporting the first motion unit 11 in such a fashion that the first motion unit 11 can repetitively move up and down.
  • the second motion unit 12 also repetitively moves up and down through the motion force from the first motion unit 11.
  • the coil C may be an annular voice coil, for example, fixed to a case 1 of the vibrator 10.
  • the end portion of the coil C is connected to an external electric signal source by being soldered thereto, or is connected in the form of a contact through a terminal to a printed circuit board (PCB) provided on the case 1.
  • PCB printed circuit board
  • the case may be a main body Ia or a cover Ib.
  • the magnet M consists of magnets 1 and 2 (Ml and M2) which are concentric and have different diameters.
  • the magnets be separated to form an air gap therebetween.
  • the magnet M may be, for example, a single magnet.
  • the vibration force thereof may be reduced, the diameter thereof can also be reduced such that it can be used as a compact type device, such as a bone conduction transducer.
  • a top plate T is seated on the magnet M to concentrate the magnetic force thereon.
  • the first motion unit 11 may be a yoke, a leaf spring with low elastic modulus, or a synthetic resinous oscillator, for example.
  • the magnet M is preferably seated thereon, and in case of the synthetic resinous oscillator, the coil is preferably seated thereon.
  • the first motion unit 11 may be perforated at its center portion, or may be curved in one direction and perforated at its center portion.
  • the first motion unit 11 supports the magnet M or the coil C. However, it is preferable that the first motion unit supports the magnet M thereon in view of the correlation between weight and vibration force since the magnet M exhibits excellent vibration force.
  • the second motion unit 12 may be a leaf spring having a high elastic modulus, for example, surrounding the first motion unit 11, from one surface to the circumference thereof.
  • the second motion unit 12 is fixed at its center portion to the case 1, and protrudes at its outer peripheral portion in one direction, wherein the center portion and the outer peripheral portion may be connected by at least three elastic frames 12a, each being curved in a circular shape.
  • the elastic frame 12a is made shorter to improve its lower frequency characteristics.
  • the outer peripheral portion of the second motion unit 12 has an end portion bent inward so that it catches the first motion unit 11 or the magnet M including the same.
  • the outer peripheral portion of the second motion unit 12 which is bent inwards, surrounds the upper surface of the top plate T seated on the magnet M in such a fashion that it is flush with the top plate T through making the top plate stepped in the same thickness as that of the second motion unit 12, or otherwise may fixedly surround the upper surface of the top plate T without forming the step.
  • a support member 13 may be provided between the first motion unit 11 and the second motion unit 12 to secure the range of downward repetitive motion of the first motion unit 11.
  • the support member 13 may be a ring supporting the lower portion of the outer peripheral portion of the first motion unit 11 with respect to the second motion unit 12, a protruding step formed on the lower surface of the outer peripheral portion of the first motion unit 11, or a protruding step formed on an inner peripheral portion of the second motion unit 12.
  • the second motion unit 12 may be fixed at its outer peripheral portion to the inner peripheral portion of the main body Ia through impregnation injection molding, or may be supported and fixed thereto by the insertion of a ring into both surfaces of the outer peripheral portion.
  • a supporting slant portion 13a may be formed so as to have an inclined surface except for the surface of the first motion unit
  • the main body Ia of the case 1 is provided at its center portion with a step Ic that protrudes upward and has a perforated center.
  • a rod type shaft Id having a recess at its end portion may be formed in the center portion on one surface of the cover Ib of the case 1.
  • the recessed portion of the shaft Id formed at the center portion on one surface of the cover Ib enables press-fitting of the second motion unit
  • the first motion unit 11 supporting the magnets 1 and 2 also starts to repetitively move up and down.
  • the motion of the first motion unit is the repetitive up/down motion of linearly reciprocating up and down.
  • the motion force is transferred to the second motion unit 12, which supports the first motion unit 11, so that the second motion unit 12 also starts to repetitively move up and down while being supported at the center thereof on the main body Ia, to thereby transfer vibration force to the case 1.
  • the motion of the second motion unit 12 is the repetitive up/down motion of oscillating motion.
  • vibration force is improved through the addition of the repetitive up/down motion of the second motion unit 12 to the repetitive up/down motion of the first motion unit 11.
  • the embodiment shown in FlG. 5 is a structure in which the outer peripheral portion of the second motion unit 12, which is bent inward, fixedly surrounds a portion of the upper surface of the top plate T seated on the magnet M.
  • the embodiment shown in FlG. 6 is a structure in which a separate fixing member 12 passes through the center portion of the second motion unit 12, and is exposed and riveted to the outside of the hole of the step Ic of the main body Ia.
  • the supporting slant portion 13a may be formed to have an inclined surface except the surface of the first motion unit 11 that is in contact with the second motion unit 12.
  • the first motion unit 11 may consist of a yoke only, and, as shown in FlG. 10, a weight 15 made of nonconductive tungsten may be further adhered to the surface of the first motion unit opposite the coil C of the yoke.
  • the magnet M and the top plate T seated on the first motion unit 11 are one in number, respectively, and the number of windings of the coil C is increased.
  • the weight 15 made of tungsten increases the weight of the first motion unit 11 to improve the vibration force.
  • the invention as constructed above can be used as a bone conduction speaker that transfers sounds through bone conduction and a linear vibrator, and can be adapted to a headset for MP3s or as a receiver of a cellular phone.
  • the bone conduction speaker had a structure that transfers sounds through vibrating air through oscillation of an oscillating plate, and current consumption of about 50[mA] at 2V.
  • the present invention has a structure that transfers sounds through vibration in the first and second motion units 11 and 12 of an oscillator, not in the oscillating plate, and current consumption of about 23 [mA].
  • the same output can be obtained even with low current consumption, so that it is possible to considerably reduce the consumption of a battery.
  • the voltage and the current are merely exemplary ones, which may be changed and adapted according to specifications of products.
  • the present invention can output the audible output and the vibrating output using a single structure, thereby considerably simplifying the constitutional elements and the structure of the multi-functional sound output device.
  • the magnetic body may be a magnet, which may be adhesively fixed to or impregnated and fixed to the cover Ib to which the coil C is fixed.
  • a buffer pad Pl or P2 may be provided to the cover Ib or the top plate T to reduce the impact force produced during the up/down motion of the first motion unit 11 when the upper surface of the top plate T comes into contact with the cover Ib.
  • the buffer pad Pl provided on the cover Ib may be adhered and fixed to the center portion of the cover Ib where the shaft Id is formed, and the buffer pad P2 provided on the upper surface of the top plate T may be adhered and fixed to the center portion or the outer peripheral portion, or the center portion and the outer peripheral portion of the top plate T.
  • a first motion unit movably supporting either the coil or the magnet starts repetitive up/ down motion.
  • the motion force is transferred to the second motion unit supporting the first motion unit so that the second motion unit also starts repetitive up/down motion.
  • the repetitive up/down motion force of the second motion unit is added to the repetitive up/down motion force of the first motion unit to thereby increase the vibration force.
  • the present invention can makeaudible output and vibration output using a single structure, thereby considerably simplifying the constitutional elements and the structure of the multi-functional sound output device.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

L'invention concerne un vibreur pouvant améliorer une force de vibration par double oscillation d'un oscillateur, et augmenter l'efficacité de transfert de vibration par concentration de la force de vibration sur un boîtier. En réaction à un signal électrique qui lui est transmis, le vibreur vibre en fonction de la variation de la force magnétique d'une bobine et de l'interaction résultante des effets d'attraction et de répulsion entre la bobine et un aimant. Le vibreur comprend: une première unité de mouvement servant de support soit à la bobine soit à l'aimant et oscillant par leur interaction; et une seconde unité de mouvement servant de support à la première unité de mouvement de sorte que celle-ci accomplisse un mouvement vertical répétitif. La seconde unité de mouvement accomplit un mouvement vertical répétitif sous l'action de la force de mouvement exercée par la première unité de mouvement. La force de mouvement est transférée à la seconde unité de mouvement, entraînant un mouvement vertical répétitif de cette dernière.
PCT/KR2006/005562 2006-07-07 2006-12-19 Vibreur WO2008004729A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020060063934A KR100804023B1 (ko) 2006-07-07 2006-07-07 진동발생장치
KR10-2006-0063934 2006-07-07
KR10-2006-0112142 2006-11-14
KR1020060112142A KR20080043503A (ko) 2006-11-14 2006-11-14 진동발생장치

Publications (1)

Publication Number Publication Date
WO2008004729A1 true WO2008004729A1 (fr) 2008-01-10

Family

ID=38894679

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/005562 WO2008004729A1 (fr) 2006-07-07 2006-12-19 Vibreur

Country Status (1)

Country Link
WO (1) WO2008004729A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103357566A (zh) * 2012-04-10 2013-10-23 星电株式会社 振动器
EP3477833A1 (fr) * 2017-10-30 2019-05-01 EM-Tech Co., Ltd. Actionneur linéaire ayant un cadre élastique moulé par injection
US20190366383A1 (en) * 2018-06-04 2019-12-05 Onkyo Corporation Vibrator
EP3597314A1 (fr) * 2018-06-04 2020-01-22 Onkyo Corporation Dispositif vibrateur avec élément de vibration axiale

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5894263A (en) * 1995-12-15 1999-04-13 Matsushita Electric Industrial Co., Ltd. Vibration generating apparatus
JP2003136021A (ja) * 2001-11-02 2003-05-13 Citizen Electronics Co Ltd 電気−機械振動変換器
US6873234B2 (en) * 1998-02-06 2005-03-29 Tsuneo Kyouno Electromagnetic actuator mounting structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5894263A (en) * 1995-12-15 1999-04-13 Matsushita Electric Industrial Co., Ltd. Vibration generating apparatus
US6873234B2 (en) * 1998-02-06 2005-03-29 Tsuneo Kyouno Electromagnetic actuator mounting structure
JP2003136021A (ja) * 2001-11-02 2003-05-13 Citizen Electronics Co Ltd 電気−機械振動変換器

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103357566A (zh) * 2012-04-10 2013-10-23 星电株式会社 振动器
TWI575848B (zh) * 2012-04-10 2017-03-21 Hosiden Corp Vibrator
EP3477833A1 (fr) * 2017-10-30 2019-05-01 EM-Tech Co., Ltd. Actionneur linéaire ayant un cadre élastique moulé par injection
CN109728704A (zh) * 2017-10-30 2019-05-07 易音特电子株式会社 具有弹性注射模制框架的线性致动器
US10902984B2 (en) 2017-10-30 2021-01-26 Em-Tech. Co., Ltd. Linear actuator having an elastic injection-molded frame
CN109728704B (zh) * 2017-10-30 2021-02-02 易音特电子株式会社 具有弹性注射模制框架的线性致动器
US20190366383A1 (en) * 2018-06-04 2019-12-05 Onkyo Corporation Vibrator
EP3597314A1 (fr) * 2018-06-04 2020-01-22 Onkyo Corporation Dispositif vibrateur avec élément de vibration axiale
US10882075B2 (en) 2018-06-04 2021-01-05 Onkyo Corporation Vibrator

Similar Documents

Publication Publication Date Title
KR101969438B1 (ko) 선형진동모터
TW513894B (en) Multiple-function convertor for converting electric signals to vibration of elements of a portable electronic instrument
KR101250288B1 (ko) 햅틱 엑추에이터
WO2006001436A1 (fr) Actionneur linéaire vibrant
KR101057078B1 (ko) 다기능 마이크로 스피커
US7787650B2 (en) Electromagnetic exciter
KR101857611B1 (ko) 선형진동모터
US6492899B1 (en) Electromagnetic converter having superior anti-shock property
JP4422354B2 (ja) 電気−機械−音響変換器
KR100842092B1 (ko) 전자음향변환기의 진동 메커니즘
KR100804023B1 (ko) 진동발생장치
KR101111894B1 (ko) 다기능 마이크로 스피커
WO2008004729A1 (fr) Vibreur
JP6126769B2 (ja) 多共振リニアモーター
KR20160067344A (ko) 초소형 복합 진동 마이크로스피커
KR100877519B1 (ko) 감각 신호 출력 장치
KR100842091B1 (ko) 진동발생장치
KR101198077B1 (ko) 선형 진동 발생장치
KR101266793B1 (ko) 햅틱 엑추에이터
KR101014190B1 (ko) 전자음향변환기
KR100396794B1 (ko) 진동모터 일체형 스피커
KR20080043503A (ko) 진동발생장치
KR100773984B1 (ko) 다기능 진동자 모듈
KR102066662B1 (ko) 진동 모터
KR20160036886A (ko) 초소형 복합 진동 마이크로스피커

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06824200

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 06824200

Country of ref document: EP

Kind code of ref document: A1