WO2009110705A2 - Structure de bobine acoustique pour un haut-parleur à conduction osseuse et haut-parleur à conduction osseuse - Google Patents

Structure de bobine acoustique pour un haut-parleur à conduction osseuse et haut-parleur à conduction osseuse Download PDF

Info

Publication number
WO2009110705A2
WO2009110705A2 PCT/KR2009/000992 KR2009000992W WO2009110705A2 WO 2009110705 A2 WO2009110705 A2 WO 2009110705A2 KR 2009000992 W KR2009000992 W KR 2009000992W WO 2009110705 A2 WO2009110705 A2 WO 2009110705A2
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
housing
conduction speaker
bone conduction
bobbin
Prior art date
Application number
PCT/KR2009/000992
Other languages
English (en)
Korean (ko)
Other versions
WO2009110705A3 (fr
Inventor
이채훈
최석규
백성흠
석원기
안종식
김덕규
최계숙
Original Assignee
팜쉬주식회사
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 팜쉬주식회사 filed Critical 팜쉬주식회사
Publication of WO2009110705A2 publication Critical patent/WO2009110705A2/fr
Publication of WO2009110705A3 publication Critical patent/WO2009110705A3/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • 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 a voice coil structure and a bone conduction speaker for a bone conduction speaker, and more particularly, by inserting a ferrite core having a high permeability into the bobbin in which the voice coil is wound, the compact structure, the output of the speaker, and the frequency band
  • the present invention relates to a voice coil structure and a bone conduction speaker for a bone conduction speaker that can improve the noise, reduce the distortion during bass reproduction, and provide an excellent characteristic even at high frequency by minimizing the eddy current loss by constructing the vibrator in one body.
  • Bone conduction speaker unlike air conduction speakers, converts electrical signals into vibration signals and converts them into the external or middle ear through the cranial bone or jawbone. Instead of going through the cochlea, it uses the principle of hearing through the auditory nerve. In addition, because it is sent to the cochlea without passing through the three bones of the isola, even if the eardrum or the isola bone is abnormal, the sound can be clearly heard by bone conduction if the cochlear and auditory nerve are normal. It is used.
  • Bone conduction speakers are often manufactured in combination with a bone conduction headset.
  • a bone conduction speaker When a bone conduction speaker is worn on the front side of the ear (temporal part) or on the back of the ear and the forehead of the head, The incoming sound is transmitted directly to the auditory nerve, not through the eardrum, so that hearing aids that can't use normal hearing aids and hearing loss (if you have a disability in the external or middle ear), as well as organs of the middle ear that suffer from hearing loss despite having a healthy cochlea It can be used in a wide range of applications for those who are injured, and there is also an advantage that can be applied to a variety of non-deaf people in general when using bone conduction headset.
  • a mobile phone using a bone conduction speaker has been developed and spread.
  • Bone conduction headsets are absolutely lacking in the three major elements of sound, such as frequency, amplitude and tone, compared to conventional air conduction headsets. Bone conduction speakers that process signals (MonoSignal) and stereo signals (Stereo Signal) are divided and spread.
  • Bone conduction speakers widely used for mono signal processing are disclosed in Korean Patent No. 10-586140.
  • the patent is not suitable for stereo signal processing and is used only in limited fields such as communication.
  • the bone conduction speaker applied for audio has been developed in various structures, they also can not be satisfied by the three elements of the sound, which is the basis of the speaker in the process of processing stereo signals (StereoSignal) It does not implement the function as a credit.
  • the conventional bone conduction speaker for audio is largely classified into a housing radial type in which the diaphragm is exposed to the outside of the housing and a housing built-in type in which the diaphragm is installed inside the housing.
  • a typical example of a housing radial bone conduction speaker is disclosed in Korean Patent Publication No. 10-2007-35376.
  • the housing radial bone conduction speaker has a structure in which a cushion ring connected to a vibration ring, which is a vibration means, protrudes to the outside of the housing so that vibration of the vibration ring is transmitted to the auditory nerve through the cushioning.
  • the structure of the housing radial bone conduction speaker is the same as the structure and principle of the speaker of the conventional air conduction (Air conduction) except that the cushioning is used in close contact with the bone of the human body.
  • the patent has a yoke having bent portions formed on both sides, a pair of voice coils fitted to each of the perception formed on the yoke, magnets are arranged while maintaining a constant distance between the pair of voice coils, It comprises a plate facing the bottom surface of the magnet and the vibration plate located on the bottom surface of the plate, forming four magnetic flux tight voids and the vibration plate vibrates due to two magnetic change phenomenon by a pair of voice coil It is characterized by.
  • Bone conduction speaker with built-in housing is improved compared to radial in that the diaphragm is configured inside the housing, so that distortion does not occur in sound source and sound quality even when physical force is applied from the outside. It is indirectly in close contact with the bones of the skin contact surface and vibrates, so the sound quality is lower than the diaphragm open type in the volume and bass regeneration.
  • the yoke 20 is essentially used as another element for improving sound quality and volume, which has a large size and a large structure.
  • Transformers are used in various forms and applications in electronic circuits, and cores, coils, and bobbins are essential.
  • Transformers typically laminate several sheets of silicon steel sheet symmetrically in an "E” shape, insert a “I” shaped silicon steel sheet into the stacked space, insert a bobbin in the center of the "E” shape, and then bobbin It has a structure in which a coil is wound around the outer circumferential surface thereof.
  • Eddy current is the current generated in the silicon steel sheet when the magnetic field is formed.
  • iron core is mainly used only in low frequency band.
  • the problem of the core core composed of such a silicon steel sheet is applied very similarly to the conventional housing-integrated bone conduction speaker.
  • the diaphragm for delivering the final vibration sound has a structure in which many parts other than the yoke, the frame, the vibrator are stacked. More specifically, there are many components for adjusting the tension by using a material such as a screw for supporting and binding these elements, a configuration of a diaphragm having a tension function in a vibrator for a vibration role, and a diaphragm for a spring.
  • the structure of is very similar to that of the E, I iron core of the transformer.
  • the distortion of the sound quality is increased by applying an indirect effect to the high frequency band due to unnecessary high frequency noise oscillation.
  • the conventional bone conduction speaker has a complicated structure in which many elements are stacked to improve the volume, sound quality, and frequency characteristics, and even in this structure, even though each element is precisely mechanically assembled, In accordance with the increase in the size and the dimensional distribution of the required parts, the variation in the amount of vibration occurs, resulting in the failure of the vibration characteristics.
  • the conventional bone conduction speaker is configured to complexly and finely stack many elements to improve the sound quality of the bone conduction speaker, as described in the above-mentioned problems, it is difficult to implement some core functions of the bone conduction speaker. There is a problem, and moreover, such a structural configuration causes a lot of inconvenience even in a feeling of wearing irrelevant to performance and sound quality.
  • Korean Patent No. 10-799428 discloses a structure for improving the output of the vibrator and the diaphragm by forming a magnet on the upper portion of the diaphragm as a means for improving the output of the bone conduction speaker.
  • the registered patent is not only harmful to the human body since the magnetic force of the magnet is directly transmitted to the human body, there is still a problem that the degree of output improvement of the speaker is not sufficient.
  • the bone conduction speaker which processes the acoustic signal as vibration and receives it as an acoustic signal
  • the improvement of sound quality, the increase in output, and the reduction of external leakage sound generated during vibration are urgently required through the development of new devices and structures for vibration. It is necessary.
  • An object of the present invention for solving the above problems is to insert a ferrite core having a high permeability inside the bobbin wound around the voice coil, compact structure, speaker output enhancement, frequency band improvement, noise blocking, distortion during bass reproduction To reduce the
  • Another object of the present invention is to reduce the weight significantly by configuring the vibrator in one-piece thin structure, and to reduce the weight and miniaturization, and the vibrator is composed of a single shape to block the noise caused by the vibration generated from the vibrator during vibration To make it possible.
  • Still another object of the present invention is to reduce the distortion of the vibration sound and attenuate the external leakage sound by interposing a buffer member between the upper housing and the lower housing.
  • a preferred embodiment of the present invention for achieving the above object, characterized in that it comprises a bobbin formed in the center of the hollow, the ferrite core is inserted into the hollow of the bobbin and a voice coil wound around the outer peripheral surface of the bobbin A voice coil structure for a bone conduction speaker is provided.
  • the bobbin is preferably formed on the upper and lower ends of the support extending outward, jig coupling projections are coupled to the winding machine jig on the upper surface of the support of the upper end.
  • a housing having an inner space, a magnet located at the bottom of the housing, a bobbin formed in the center, a ferrite core inserted into the hollow of the bobbin And a voice coil wound around an outer circumferential surface of the bobbin, and extending from a voice coil structure and a first support portion positioned above the magnet, an upper surface portion extending from an upper end of the first support portion, and a lower end of the first support portion. And a first lower surface portion formed between the first lower surface portion and the magnet and the voice coil structure, wherein the upper surface portion includes a vibrator that is in contact with an upper inner surface of the housing. .
  • the housing preferably has a structure in which a buffer member is interposed between the upper housing and the lower housing.
  • the seating surface of the vibrator is bent in two stages to form a second support portion and the second lower surface portion, it is more preferable that the magnet is inserted into the space between the first lower surface portion and the second lower surface portion.
  • a plurality of coupling protrusions are formed on a lower surface of the lower housing, and a coupling hole is formed at a position corresponding to the coupling protrusion.
  • the bobbin is preferably formed on the upper and lower ends of the support extending outward, jig coupling projections are coupled to the winding machine jig on the upper surface of the support of the upper end.
  • an air gap is formed between the upper surface of the voice coil structure and the upper surface of the vibrator so as to be spaced a predetermined distance apart.
  • the cross section of the bobbin is formed in a circular shape, it is more preferable that the voice coil is wound in the form of a solenoid on the outer peripheral surface of the bobbin.
  • the weight is drastically reduced, so that the weight and size can be reduced, and the vibrator is composed of a single shape, and also the effect of blocking the noise caused by the vibration generated from the vibrator during vibration. have.
  • FIG. 1 is a front view of a bone conduction speaker according to the present invention.
  • FIG. 2 is an exploded front view of a bone conduction speaker according to the present invention.
  • FIG. 3 is an exploded perspective view of the vibrator of FIG. 2.
  • FIG. 4 is a front sectional view of a bone conduction speaker according to the present invention.
  • FIG. 1 is a front view of a bone conduction speaker according to the invention
  • Figure 2 is an exploded front view of a bone conduction speaker according to the invention
  • Figure 3 is an exploded perspective view of the vibration unit of Figure 2
  • Figure 4 is a bone conduction speaker according to the present invention Is a cross-sectional view of.
  • the bone conduction speaker 1 is located between the upper housing 10 and the lower housing 20, the vibrator 70, the voice coil structure is located in the upper space of the vibrator 70 The magnet 50 is inserted into the lower space of the vibrator 70 has a structure.
  • the inner surface of the upper housing 10 is coupled to the coupling groove (10a) for coupling to the engaging projection 26 of the lower housing 20 protrudes downward to be fixed to the upper housing 10 and the lower housing 20 fixedly have.
  • the outer periphery of the upper housing 10 and the lower housing 20 is configured to be spaced apart by a predetermined distance when mutually coupled, the buffer member 80 is inserted into the spaced space.
  • the lower end surface of the upper housing 10 has a predetermined space other than the engaging protrusion 26 of the coupling groove 10a and the lower housing 20 to be cushioned.
  • the portion 80 is to be inserted.
  • the inner surface of the upper housing 10 is in close contact with the upper surface portion 72 of the vibrator 70 to be described later serves to deliver the vibration sound generated from the upper surface portion 72 in close contact with the skin of the human body.
  • a coupling protrusion 21 for fixing the vibrator is formed on the inner surface of the lower housing 20 so as to be coupled to the coupling hole 75a formed in the second lower surface portion 75 of the vibrator 70. have.
  • the bottom surface of the lower housing 20 has a headset coupling protrusion 25 for coupling the bone conduction speaker 1 with the housing portion of the headset (not shown).
  • the headset coupling protrusion 25 facilitates assembly with a coupling groove (not shown) configured in the headset when coupled with the headset, thereby compensating for a problem that the contact surface is spaced along the head of the human body when using the headset. It is configured to be rotatable so as to be firmly in contact with the skin in order to.
  • the upper surface of the upper housing 10 is in close contact with the skin of the human body to transfer the vibration sound of the vibrator 70 to the bone and at the same time to implement a role of an external cover to embed the vibrator 2 inside the housing. do.
  • the vibrator 2 is configured inside the housing, the foreign substance such as temperature, humidity and dust caused by the external environment is blocked at the source, thereby improving the function of the product and providing economical life. .
  • the bone conduction speaker 1 is configured separately from the headset in the present embodiment
  • the bone conduction speaker 1 may be installed in the headset.
  • the shock absorbing member 80 is interposed between the upper housing 10 and the lower housing 20 when the upper and lower housings 10 and 20 made of the same material are directly coupled when the vibrator 70 vibrates in the inner space of the housing. It is used to attenuate the distortion and external leakage that may occur, and to improve the volume and sound quality transmitted to the outside together with a buffering role during vibration, and a cushioning member such as silicone and rubber may be used. The effect was found to be great.
  • the vibrator sound may be generated when the vibrator 70 vibrates in the inner space of the housing. It can attenuate the distortion and external leakage and improve the volume and sound quality transmitted to the outside along with the buffering role in vibration.
  • the voice coil structure includes a bobbin 30, a voice coil 40, and a ferrite core 60.
  • the bobbin 30 is hollow so that the ferrite core 60 can be inserted into the central inner circumferential surface, and upper and lower coils are provided with upper coil support 30b and lower coil support 30c.
  • the upper support 30b and the lower support 30c are configured in a shape having an appropriate height and thickness in order to constantly fix the shape of the stacked structure when winding the voice coil 40 in multiple layers.
  • the voice coil 40 is wound by the solenoid type on the outer peripheral surface of the bobbin 30 comprised circularly.
  • the solenoid type voice coil 40 is in the form of a circular conductor, and the magnetic fields produced by the respective circular conductors are synthesized with each other.
  • the strength of the magnetic field is the strongest at the center of the coil, and weakens upward and downward from the center. There is a tendency.
  • the magnetic field strength is improved by using the ferrite core 60 having a high susceptibility.
  • the strength of the magnetic field is proportional to the number of turns of the voice coil 40, when a current is applied to the voice coil 40, a magnetic field is generated inside the voice coil 40, and an AC signal generated by the voice coil 40 is ferrite.
  • the predetermined frequency is formed by the magnetism of the core 60 and the magnet 50 and the change of current and voltage of the voice coil 40.
  • the voice coil 40 has a property of stabilizing a change in current. That is, when the current is about to flow, the voice coil 40 does not disturb the current and tries to flow the current, and when the current decreases, there is a property to continue to flow. Therefore, the induced current generated in the circuit by the electromagnetic induction is always induced. It flows in a direction that prevents the change of the magnetic flux that causes the action.
  • the ferrite core 60 is a bar type of a circular shape, is inserted into the hollow of the bobbin 30 is installed.
  • the ferrite core 60 has a disadvantage that can be broken in the strong external impact despite the many advantages. Therefore, in the present embodiment, the upper and lower portions of all the elements constituting the bone conduction speaker 1 with respect to the central axis of the ferrite core 60 are arranged around the central axis, that is, the structure surrounding the ferrite core 60. It is characterized by providing an excellent bone conduction speaker (1) that can be configured to withstand a shock from the outside.
  • the material of the ferrite core 60 it is preferable to apply a generally used high-frequency ferrite material.
  • the ferrite core 60 collectively refers to a ceramic magnetic material mainly composed of iron oxide (Fe 2 O 3 ), and the nickel-zinc group has a permeability of 20 to 800, which is high in electrical resistance and excellent in stability against temperature change. In particular, the high frequency noise can be filtered using a unique magnetic damping effect.
  • the ferrite core 60 has a property of low loss of eddy current or eddy current loss in the high frequency band and low hysteretic hand, and thus is widely used for high frequency.
  • the ferrite core 60 reduces leakage inductance with stability and improvement of inductance of the voice coil 40, and has an advantage of improving magnetic force applied to the voice coil 40.
  • the ferrite core 60 acts as a kind of magnetic material, it has the effect of maximizing the electromagnetic force by increasing the magnetic flux density together with the magnet 50, thereby increasing the sound pressure and sound efficiency of the vibrator 70 to generate a strong vibration force. Let's do it.
  • the manganese-zinc group has a permeability of 800 or more. It is applied as a permanent magnet having a terminal structure and increased coercivity, and the Br-, Sr- and Nd-based mainstreams, and the loss of hystresis is large, are limitedly applied in the low frequency band. Therefore, detailed description thereof will be omitted.
  • the permeability of the ferrite core 60 is a constant representing the pass rate of the magnetic field lines, which means the magnetic flux density by the magnetic field, the higher the permeability, the larger the magnetic force can be obtained even with a small ferrite core (60) .
  • another method for improving the output of the bone conduction speaker 100 is to increase the number of turns of the voice coil 40 and to apply a ferrite core 60 and a magnet 50 having a high permeability and a large specification.
  • the ferrite core 60 is saturated, so that the strength of the electromagnet is lowered, and thus the resistance component due to the increased number of turns in the voice coil 40 is increased to decrease the current flowing in the voice coil 40. It should be noted that.
  • the vibrator 70 is composed of an integral type in which a plate material made of a flexible stainless material having a thin shape is processed by plating a structure and a shape through a press die.
  • the vibrator 70 may be formed by bending the upper and lower ends of the stainless steel plate to form a "c" shape, and as shown in the drawing, it may be formed into a shape in which the "r" letter is inverted by multiple bending. .
  • a magnet 50 is installed between the vibrator lower portion and the lower housing 20, and the voice coil structure is seated in the “c” shape.
  • the vibrator 70 is bent in four stages, the first support portion 71, the second support portion 74, which serves to support the structure, the upper surface portion 72 serving as the diaphragm, the voice coil A first lower surface portion 73 providing a surface on which the structure is seated and a second lower surface portion 75 fixedly installed in the lower housing 20 and providing a space in which the magnet 50 is installed.
  • the ferrite core 60 is magnetic, so that the voice coil assembly is stably fixed by the magnet 50 and the magnetic force. It is also possible to have a separate fixing structure for a more secure fixing.
  • the gap between the upper surface portion 72 and the first lower surface portion 73 of the vibrator 70 is slightly larger than the height of the voice coil structure such that the air gap 77 which is a vibration region between the upper surface and the upper surface portion 72 of the voice coil structure. It is desirable to secure).
  • the upper surface portion 71 of the vibrator 70 has a shape similar to the inner surface of the upper housing 10 so as to be in light contact with the inner surface of the upper housing 10 when the upper and lower housings 10 and 20 are assembled. .
  • the bent shape and structure of the vibrator 70 is to minimize the flow due to vibration by fixing the magnet 50 and the voice coil structure integrally, to improve workability during assembly.
  • the structure of the vibrator is integrated as a conventional structure rather than a structure in which a plurality of elements are stacked, the vortex loss is reduced, the high frequency characteristic is improved, and the vibration characteristic is remarkably improved as compared with the conventional structure.
  • the magnet 50 is formed under the vibrator 70, the voice coil structure is formed at the center of the vibrator 70, and the upper surface portion 72 of the vibrator is a vibration region. Due to the structure configured together with the air gap 77, the vibration is generated in each part of the vibrator 70, but due to the structure of the vibrator 70 described above, the maximum generated from the upper surface portion 72 side serving as the diaphragm The vibration sound of is applied.
  • the voice coil structure When the voice coil structure is inserted into the center portion of the vibrator 70, that is, the first lower surface portion 73, the air gap 77, which is a vibration region in which the upper surface portion 72 of the vibrator 70 can vibrate freely, naturally occurs. It is formed, which prevents the saturation of the ferrite core 60 during vibration.
  • the air gap 77 which is a vibration region, needs an appropriate space. Therefore, when the upper and lower spaces are narrow, a decrease in volume and sound quality occurs. On the contrary, the same phenomenon occurs even when the upper and lower spaces are increased.
  • the upper and lower spaces should be properly designed on the basis of the minimum and maximum center points to improve the vibration sound output from the speaker even at the same current consumption, which is the upper surface portion 72 and the vibration portion 2 of the vibrator 70. There is a close interrelationship with which.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

La présente invention concerne une structure de bobine acoustique pour un haut-parleur à conduction osseuse. La structure de bobine acoustique est caractérisée en ce qu'elle comprend: une bobine formée avec un creux au niveau du centre; un noyau de ferrite inséré dans le creux de la bobine; et une bobine acoustique est enroulée sur la surface circonférentielle extérieure de la bobine. Etant donné que le noyau de ferrite, qui présente une perméabilité magnétique élevée, est insérée dans la bobine sur laquelle la bobine acoustique a été enroulée, la présente invention telle que susdécrite a pour avantages de présenter une structure compacte, une sortie de haut-parleur améliorée, une gamme de fréquences améliorée, une isolation acoustique, ainsi qu'une capacité à réduire la distortion au cours de la reproduction de médiums et de basses.
PCT/KR2009/000992 2008-03-04 2009-03-02 Structure de bobine acoustique pour un haut-parleur à conduction osseuse et haut-parleur à conduction osseuse WO2009110705A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080020092A KR100872762B1 (ko) 2008-03-04 2008-03-04 골전도 스피커용 보이스 코일 구조체 및 골전도 스피커
KR10-2008-0020092 2008-03-04

Publications (2)

Publication Number Publication Date
WO2009110705A2 true WO2009110705A2 (fr) 2009-09-11
WO2009110705A3 WO2009110705A3 (fr) 2009-11-26

Family

ID=40372181

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/000992 WO2009110705A2 (fr) 2008-03-04 2009-03-02 Structure de bobine acoustique pour un haut-parleur à conduction osseuse et haut-parleur à conduction osseuse

Country Status (2)

Country Link
KR (1) KR100872762B1 (fr)
WO (1) WO2009110705A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104919818A (zh) * 2013-03-15 2015-09-16 耳蜗有限公司 具有特定内部几何结构的电磁换能器
EP3166336A4 (fr) * 2014-07-01 2018-03-14 Daesung M-Tech Co., Ltd. Module de haut-parleur par conduction osseuse et écouteur par conduction osseuse comportant des modules de haut-parleurs par conduction osseuse
CN108269469A (zh) * 2018-02-11 2018-07-10 合肥市科技馆 一种头骨听声科普体验装置和体验方法
US10178484B2 (en) 2011-03-16 2019-01-08 Cochlear Limited Bone conduction device including a balanced electromagnetic actuator having radial and axial air gaps
US11035830B2 (en) 2017-06-23 2021-06-15 Cochlear Limited Electromagnetic transducer with dual flux
CN113596684A (zh) * 2020-04-30 2021-11-02 深圳市韶音科技有限公司 声音输出装置及调节音量的方法
US11778385B2 (en) 2017-06-23 2023-10-03 Cochlear Limited Electromagnetic transducer with non-axial air gap

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110102710A (ko) * 2010-03-11 2011-09-19 팜쉬주식회사 골전도 헤드셋용 스피커
KR101122126B1 (ko) 2010-10-25 2012-03-16 주식회사 에코쉘 커널형 이어폰
KR102130618B1 (ko) * 2019-05-17 2020-07-06 부경대학교 산학협력단 액추에이터 지지위치 제어를 통한 진동크기 제어 골전도 마운트 구조 및 마운트모듈 설계 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200295399Y1 (ko) * 2002-08-16 2002-11-18 주식회사 파이컴 떨판을 이용한 초소형 골도 스피커 및 이를 구비한 이동전화기
KR20050010838A (ko) * 2002-05-28 2005-01-28 가부시기가이샤 템코 재팬 골전도 스피커
JP2005323054A (ja) * 2004-05-07 2005-11-17 Azden Corp 骨伝導スピーカ
JP2006174432A (ja) * 2004-11-22 2006-06-29 G Force:Kk 骨伝導スピーカ及びこれを用いたヘッドフォン、ヘッドレスト、枕
KR20070122104A (ko) * 2006-06-23 2007-12-28 박의봉 골전도 스피커

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950024611A (ko) * 1994-01-05 1995-08-21 구쯔자와 겐따로우 자기회로를 구비한 스피커
KR200401424Y1 (ko) 2005-09-08 2005-11-15 이동원 골전도(骨傳導)스피커

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050010838A (ko) * 2002-05-28 2005-01-28 가부시기가이샤 템코 재팬 골전도 스피커
KR200295399Y1 (ko) * 2002-08-16 2002-11-18 주식회사 파이컴 떨판을 이용한 초소형 골도 스피커 및 이를 구비한 이동전화기
JP2005323054A (ja) * 2004-05-07 2005-11-17 Azden Corp 骨伝導スピーカ
JP2006174432A (ja) * 2004-11-22 2006-06-29 G Force:Kk 骨伝導スピーカ及びこれを用いたヘッドフォン、ヘッドレスト、枕
KR20070122104A (ko) * 2006-06-23 2007-12-28 박의봉 골전도 스피커

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11917376B2 (en) 2011-03-16 2024-02-27 Cochlear Limited Bone conduction device including a balanced electromagnetic actuator having radial and axial air gaps
US10178484B2 (en) 2011-03-16 2019-01-08 Cochlear Limited Bone conduction device including a balanced electromagnetic actuator having radial and axial air gaps
US10979829B2 (en) 2011-03-16 2021-04-13 Cochlear Limited Bone conduction device including a balanced electromagnetic actuator having radial and axial air gaps
US11026032B2 (en) 2013-03-15 2021-06-01 Cochlear Limited Electromagnetic transducer with specific internal geometry
EP2974377A4 (fr) * 2013-03-15 2016-11-16 Cochlear Ltd Transducteur électromagnétique ayant une géométrie interne spécifique
US9716953B2 (en) 2013-03-15 2017-07-25 Cochlear Limited Electromagnetic transducer with specific internal geometry
CN104919818A (zh) * 2013-03-15 2015-09-16 耳蜗有限公司 具有特定内部几何结构的电磁换能器
EP3166336A4 (fr) * 2014-07-01 2018-03-14 Daesung M-Tech Co., Ltd. Module de haut-parleur par conduction osseuse et écouteur par conduction osseuse comportant des modules de haut-parleurs par conduction osseuse
US11035830B2 (en) 2017-06-23 2021-06-15 Cochlear Limited Electromagnetic transducer with dual flux
US11778385B2 (en) 2017-06-23 2023-10-03 Cochlear Limited Electromagnetic transducer with non-axial air gap
CN108269469A (zh) * 2018-02-11 2018-07-10 合肥市科技馆 一种头骨听声科普体验装置和体验方法
CN108269469B (zh) * 2018-02-11 2024-03-22 合肥市科技馆 一种头骨听声科普体验装置和体验方法
CN113596684A (zh) * 2020-04-30 2021-11-02 深圳市韶音科技有限公司 声音输出装置及调节音量的方法
CN113596684B (zh) * 2020-04-30 2023-12-29 深圳市韶音科技有限公司 声音输出装置及调节音量的方法

Also Published As

Publication number Publication date
WO2009110705A3 (fr) 2009-11-26
KR100872762B1 (ko) 2008-12-09

Similar Documents

Publication Publication Date Title
WO2009110705A2 (fr) Structure de bobine acoustique pour un haut-parleur à conduction osseuse et haut-parleur à conduction osseuse
WO2016003187A1 (fr) Module de haut-parleur par conduction osseuse et écouteur par conduction osseuse comportant des modules de haut-parleurs par conduction osseuse
KR100958486B1 (ko) 이중프레임 및 이중마그네트 구조의 골전도 스피커
US4429194A (en) Earphone
KR100350838B1 (ko) 원격 통신 장치에서 전기 역학적/전자기 트랜스듀서에의해 자기장의 전파를 제어하기 위한 방법 및 시스템
WO2018131808A1 (fr) Haut-parleur électromagnétique de haute qualité ayant une précision améliorée d'entrefer
WO2018093043A1 (fr) Haut-parleur hybride
WO2017183790A1 (fr) Casque antibruit et son procédé de fabrication
WO2011059142A1 (fr) Haut-parleur du type a ruban
WO2018128324A1 (fr) Haut-parleur électromagnétique haute résolution de type à bordures de pont
WO2017014528A1 (fr) Dispositif acoustique par conduction osseuse de type bandeau à cheveux
KR200443212Y1 (ko) 이중코일구조를 갖는 골 전도 스피커
WO2018236140A1 (fr) Haut-parleur hybride
WO2018128325A1 (fr) Haut-parleur électromagnétique ultra-mince à haute résolution utilisant un procédé de bord de pont
JP4385981B2 (ja) 動電型スピーカー
WO2012108581A1 (fr) Microphone haut-parleur multifonction
WO2010018932A2 (fr) Haut parleur
WO2011083959A2 (fr) Haut-parleur multifonctionnel
KR100541561B1 (ko) 피로 감소를 위한 소형 스피커 유닛
JP5239150B2 (ja) 骨伝導スピーカー
KR200432030Y1 (ko) 보청기 호환용 이동통신 단말기 마이크로스피커
WO2011083961A2 (fr) Micro-haut-parleur multifonctionnel
KR100354909B1 (ko) 초소형 음향 진동자
KR100510364B1 (ko) 전자기파가 증대된 이동통신 단말기용 양방향 마이크로스피커
WO2011112007A2 (fr) Haut-parleur de casque à conduction osseuse

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: 09717428

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 30/12/10)

122 Ep: pct application non-entry in european phase

Ref document number: 09717428

Country of ref document: EP

Kind code of ref document: A2