WO2002093974A1 - Appareil de conversion son-vibration - Google Patents

Appareil de conversion son-vibration Download PDF

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Publication number
WO2002093974A1
WO2002093974A1 PCT/KR2002/000501 KR0200501W WO02093974A1 WO 2002093974 A1 WO2002093974 A1 WO 2002093974A1 KR 0200501 W KR0200501 W KR 0200501W WO 02093974 A1 WO02093974 A1 WO 02093974A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnet
pole
magnet means
housing
sound
Prior art date
Application number
PCT/KR2002/000501
Other languages
English (en)
Inventor
Chi-Yup An
Original Assignee
Twin Saver 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 Twin Saver Co., Ltd. filed Critical Twin Saver Co., Ltd.
Publication of WO2002093974A1 publication Critical patent/WO2002093974A1/fr

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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
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/041—Adaptation of stereophonic signal reproduction for the hearing impaired
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

Definitions

  • the present invention relates to an apparatus for converting a sound signal into vibration so as to stimulate the human hearing organs through the human bones. More particularly, this invention relates to an apparatus using an ironcore and an inertial mass so as to exert high power output.
  • a bone-conducting loudspeaker has been developed for persons who have difficulty in hearing.
  • This loudspeaker is a kind of acoustic transducer that enables an auditorily handicapped person who does not have the tympanic membrane to hear by stimulating the auditory nerves through the cranial bone instead of the tympanic membrane.
  • the bone-conducting loudspeaker produces sound through the medium of liquid or solid matters, such as the human body, while the conventional loudspeaker uses the atmosphere.
  • FIG. 1 is a structural diagram roughly showing the conventional acoustic loudspeaker.
  • a permanent magnet 3 is fixed to a conical frame 1.
  • One pole of the magnet 3 is inserted in a cylindrical electromagnet 7 around which a voice coil 5 is wound and which has a closed face.
  • a conical vibrating diaphragm 9 is attached to the closed face of the electromagnet 7.
  • This diaphragm 9 vibrates back and forth (in the direction of Y in FIG. 1) along with the electromagnet 7. More specifically speaking, when an acoustic signal V is applied to the voice coil 5, the coil 5 produces magnetic force.
  • the magnetic force interacts with the magnet 3 to move the electromagnet 7. Thereby the diaphragm 9 vibrates and regenerates acoustic sound by waving the surrounding atmosphere.
  • a "body-sensible loudspeaker” has been developed, by which a user can sense the acoustic energy generated from an audio system, through the tactile organs rather than the auditory organs.
  • the body-sensible loudspeaker which converts the acoustic signal into vibration to stimulate the human body, provides even more vivid sound in comparison with the conventional acoustic loudspeaker. It can be used for vehicle seats, game tools, theatre seats, etc.
  • high power output cannot be obtained because it directly uses a structure of the conventional acoustic loudspeaker (see FIG. 1).
  • vibrating diaphragm is made of soft materials, such as paper or PVC.
  • a coil becomes short-lived because of heat generated by the amount of current increasing when the output power is made higher. Moreover, if the fundamental oscillation frequency of the vibrating diaphragm coincides with the frequency of the amplified acoustic signal, the diaphragm may resonate. This will cause the diaphragm to abnormally oscillate, thereby, the frequency over a certain frequency value being blocked.
  • an object of the present invention to provide a new-organized loudspeaker for increasing vibration energy by using an electromagnet having an ironcore and an inertial mass.
  • a sound-to-vibration conversion apparatus comprising a housing; a plurality of magnet means, each of which has N- and S- pole being formed on the same plane and is fixed to the housing; a plurality of electromagnet, each of which is located adjacent to the plane where N- and S-pole of the magnet means are formed; and a rotating shaft for pivotally fixing one end part of the respective electromagnet, whereby the electromagnet reciprocatively pivots to get close to or away from N- or S-pole of the magnet means in accordance with the interaction between the polarities formed at the electromagnet by an acoustic signal applied to the electromagnet and N- and S-pole of the magnet means.
  • the respective electromagnet comprises an inertial mass for increasing inertial force of the electromagnet's reciprocal rotary motion, such that the housing including the magnet means can vibrate against the electromagnet.
  • the magnet means is a permanent magnet. It is also desirable that the electromagnet includes an E-shaped iron core having three protrusions; and a coil wound around a central protrusion.
  • a sound-to-vibration conversion apparatus may further comprises elastic means for giving the respective electromagnet a resisting power in the opposite directions of the electromagnet's motion, and for neutralizing the electromagnet, when no acoustic signal is applied to the coil.
  • FIG. 1 is a structural diagram roughly showing the conventional acoustic loudspeaker
  • FIG. 2 is a typical diagram showing the principle of an apparatus of this invention
  • FIG. 3 shows a preferred embodiment for carrying out the present invention.
  • FIG. 2 shows the principle of a sound-to-vibration converter according to the present invention.
  • a magnet means 11 having N-pole and S-pole, both of which form on the same plane, is fixed to a rigid body, such as a metal frame or housing (not shown in FIG. 2, but shown in FIG. 3 denoting "12" and "14").
  • the frame 12 or housing 14 may be a car seat, a bed, a chair, or any other things that this apparatus could be adapted.
  • the magnet means 11 can include either a permanent magnet or an electromagnet, in this description a permanent magnet will be typically referred to for convenience.
  • An electromagnet 13 is located adjacent to the plane where N- and S-pole of the permanent magnet 11 are formed.
  • the electromagnet 13 reciprocatively pivots to get close to or away from N- or S-pole of the magnet 11 in accordance with the interaction between the polarity formed at the electromagnet 13 by the acoustic signal applied to the electromagnet 13 and N- and S-pole of the magnet 11 (compare a dotted line "A" with a solid line "B").
  • a sound-to-vibration conversion apparatus of the present invention utilizes magnetic force to convert sound into vibration, like the conventional acoustic loudspeaker. Therefore, it is necessary to adapt a magnet and a coil to this invention also.
  • this invention employs an iron-cored electromagnet that a coil is wound around an iron core. Because the iron-cored electromagnet is relatively heavy, it acts as an inertial mass against the fixed magnet, so that the interaction between the fixed magnet and the electromagnet can produce much more vivid vibration. Additionally, because an iron-cored electromagnet provides higher efficiency than a non-iron-cored electromagnet, the loss of magnetic force becomes lesser in this invention.
  • the above-described concept with reference to FIG. 2 just shows the principle spirit of this invention. It still has some unsettled problems: Since the electromagnet 13 is facing the permanent magnet 11 at narrow intervals, the attractive force of the permanent magnet 11 disturbs the neutral state of the electromagnet 13.
  • the neutral state here means the state that the electromagnet 13 is situated in the middle portion between N- and S-pole of the permanent magnet 11 (see a dotted line "A" in FIG. 2).
  • inertial force of the present invention is stronger than that of the conventional body-sensible loudspeaker owing to the heavy iron-cored electromagnet 13, it is desirable to more increase the inertial force or vibration energy of the electromagnet 13 so as to maximize the advantages of the present invention.
  • FIG. 3 The preferred embodiment to solve the above problems is shown in FIG. 3.
  • Either of the electromagnets 13, 13' includes an E-shaped iron core having three protrusions 13a,b,c and 13a',b',c'; and a coil 17, 17' wound around a central protrusion 13a, 13a'.
  • the electromagnet 13, 13' includes the inertial mass 23, 23' to increase the inertial force of the electromagnet's reciprocal rotary motion. Therefore, even though the electromagnet 13, 13' is movably fixed in the housing 14, because the electromagnet 13, 13' including the inertial mass is heavier than the housing 14, the housing 14 including the permanent magnet 11, 11' will vibrate instead of the electromagnet 13, 13'. Accordingly, the vibration energy of a sound-to-vibration conversion apparatus of the present invention can be much more augmented. When the housing 12 vibrates, this vibration energy is transferred to a seat, a bed, a chair, etc. (not shown) to which the housing 12 is attached, and finally the vibration energy will be transmitted to stimulate the human tactile organs.
  • the reference numerals "25a”, “25b”, “25a”', and “25b”' denote elastic members for neutralizing the electromagnet 13, 13'.
  • the elastic members 25a,b,a',b' give the respective electromagnet 13, 13' the resisting force in the opposite directions of the electromagnet's motion.
  • the elastic members are not limited to the elastic members
  • the elastic member 25a,b,a',b' also acts as a kind of braking means for limiting the uppermost and lowest points of the electromagnet's reciprocal motion.
  • springs are used as the elastic member 25a,b 5 a',b'.
  • springs are respectively installed between each the lateral face of the electromagnet 13, 13' and the housing 14.
  • a rubber may be used as the elastic member 25a,b,a',b', or both also. If both of the spring and the rubber are used, the electromagnet's braking performance will be improved.
  • the braking force of the elastic member 25a,b,a',b' is set in proportion to the attractive force of the permanent magnet 11, 11 '. That is to say, when manually moving the electromagnet 13, 13', it is desirable that the pressure of the elastic members 25a,b,a',b' is to be adjusted at the point where an adjuster feels no attractive force of the permanent magnet 11, 11'.
  • reference numerals "19" and "19"' stand for bearings for supporting the rotating shaft 15.
  • a frequency trap for this aim is well known to an ordinary person who is skilled in the art to which this invention pertains.
  • the sound-to-vibration conversion apparatus has an advantage of providing high power vibration energy with lower heat consumption loss. Moreover, its simple structure makes it possible to improve the productivity with chief cost.
  • This apparatus can be used for seats of vehicles to satisfy the audio or car maniacs' desire. If it is used for a computer, a game machine, a theater chair, a floor, a ceiling, a wall, etc., a user can enjoy vivid and intense sound as if he were in the spot. If it is used for a mattress or bed, it is helpful to antenatal training of pregnant women, curing insomnia, and promoting a dramatic married life.
  • the sound-to-vibration conversion apparatus of the present invention is adapted to keyboards of an electronic piano, since fingers can feel the vibration through the keyboards, even auditorily handicapped persons can play the piano as they are feeling the tones.
  • This invention may be applied to an acoustic resonator apparatus. That is, this invention can reduce vehicle or toilet noise, and, if it attached to a conference room or window, eavesdrop can be prevented. Besides, this invention is applicable to communication means using the medium of liquid or solid, and to a massage treatment machine.

Abstract

L'invention concerne un appareil de conversion son-vibration comprenant une pluralité d'aimants dotés chacun d'un pôle N et d'un pôle S, ainsi qu'une pluralité d'électro-aimants situés au voisinage du plan dans lequel sont formés les pôles N et les pôles S desdits aimants. Chacun des aimants est fixé sur un compartiment, chacun des électro-aimants étant agencé de manière à pivoter autour d'un arbre rotatif. Les électro-aimants susmentionnés pivotent réciproquement de façon à se rapprocher ou à s'éloigner des pôles N ou des pôles S des aimants selon l'interaction entre la polarité produite au niveau des électro-aimants par le signal acoustique appliqué sur les électro-aimants ainsi que les pôles N et S desdits aimants.
PCT/KR2002/000501 2001-05-17 2002-03-25 Appareil de conversion son-vibration WO2002093974A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2001/26923 2001-05-17
KR1020010026923A KR20010078913A (ko) 2001-05-17 2001-05-17 대출력 음향-진동 변환장치

Publications (1)

Publication Number Publication Date
WO2002093974A1 true WO2002093974A1 (fr) 2002-11-21

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ID=19709577

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2002/000501 WO2002093974A1 (fr) 2001-05-17 2002-03-25 Appareil de conversion son-vibration

Country Status (2)

Country Link
KR (1) KR20010078913A (fr)
WO (1) WO2002093974A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7376237B2 (en) 2004-09-02 2008-05-20 Oticon A/S Vibrator for bone-conduction hearing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002249649A1 (en) * 2002-04-03 2003-10-13 Twin Saver Co., Ltd. Sound-to-vibration conversion apparatus
KR200284569Y1 (ko) * 2002-04-22 2002-08-13 (주)트윈 세이버 음향-진동 변환장치를 내장한 매트리스
KR20040040209A (ko) * 2002-11-06 2004-05-12 양호준 영구자석을 이용한 진동 장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04345299A (ja) * 1991-05-22 1992-12-01 Bodeisonitsuku Kk 電気・機械振動変換器
US6141427A (en) * 1998-06-08 2000-10-31 Temco Japan Co., Ltd. Bone-conduction speaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04345299A (ja) * 1991-05-22 1992-12-01 Bodeisonitsuku Kk 電気・機械振動変換器
US6141427A (en) * 1998-06-08 2000-10-31 Temco Japan Co., Ltd. Bone-conduction speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7376237B2 (en) 2004-09-02 2008-05-20 Oticon A/S Vibrator for bone-conduction hearing

Also Published As

Publication number Publication date
KR20010078913A (ko) 2001-08-22

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