CN1454443A - Bone conduction vibrator - Google Patents
Bone conduction vibrator Download PDFInfo
- Publication number
- CN1454443A CN1454443A CN00819928.0A CN00819928A CN1454443A CN 1454443 A CN1454443 A CN 1454443A CN 00819928 A CN00819928 A CN 00819928A CN 1454443 A CN1454443 A CN 1454443A
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- CN
- China
- Prior art keywords
- yoke
- armature
- voice coil
- bone conduction
- vibrator
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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
- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
A bone conduction vibrator which can increase an output efficiency and achieve a wide-band frequency is disclosed. The bone conductive vibrator comprises a frame which is formed in a cylindrical shape and has opened upper and lower ends; a base plate which is fixed into the opened lower end of the frame; and amateur which includes an annular rim having a certain thickness and fixed into the opened upper end of the frame and a circular vibrating plate coupled to an inner circumference of the rim in a state of stepped down to a certain depth, and for controlling a frequency band according to a diameter, thickness and material of the vibrating plate; a yoke which includes a circular body portion for supporting the amateur and an extended portion extended downwardly integrally along the outer circumference of the body portion, and for concentrating magnetic flux.
Description
Technical field
The present invention relates to a kind of bone conduction vibrator (vibrator), more particularly, relate to that a kind of frequency band broadening and delivery efficiency improve and the bone conduction vibrator simplified of structure simultaneously.
Background technology
In general, the sound that the people heard is a kind of ripple that is produced by the material vibration.Why the people can hear the sound from audio device speakers etc., is because people's ear-drum vibrates according to airborne sound wave.
Sound wave passes people's external ear vibration ear-drum, and the interior ear cell that is encouraged passes to brain.Human can hear that the general range of sound is 20 to 20,000Hz, and also the general range of human sound is 500 to 20,000Hz.There are many people when listening the sound of above-mentioned scope, to exist difficulty.
Yet, developed the phone that has bone conduction vibrator, earphone etc. in recent years, osteoacusis oscillator wherein can make the hearing impairment person of external ear and/or middle ear obstacle experience voice signal by the bone around the vibration ear.Simultaneously, the normal person also can experience voice signal by utilizing the bone conduction auditory and the air transmitted sense of hearing.
Based on the These characteristics of bone conduction telephone and earphone, these sound listening equipments can be applied in building, market or be similar on the helmet that uses in the noisy place during these emergencies of fire extinguishing.
Fig. 1 is the sectional view of a traditional bone conductors vibrator.
As shown in fig. 1, this traditional bone conduction vibrator 10 comprises a cylinder-shaped frame 11 and a substrate 12 that hides on these framework 11 open bottom.
One discoid over cap 13 is installed in the top of framework 11, will vibrate to pass that for example to pass the opening that is formed on over cap 13 cores protruding in the vibration section 14 of ear (hear) to user's body.Directly the pars papillaris 15 of contact user head is formed on the top of vibration section 14.
The damper 16 that is used for reducing vibration amplitude is set between framework 11 tops and the over cap 13.The core of damper 16 is passed in vibration section 14.
Under damper 16, a yoke (yoke) 17 that is used for the concentration magnetic flux is set.This yoke 17 comprises that the main body 17a and of a supporting damping device 16 cores is along the peripheral integrally formed extension 17b downwards of main body 17a.Vibration section 14 is passed the core of yoke 17 main body 17a and is installed fastenedly.
The voice coil loudspeaker voice coil 20 that the bottom is fixed on the substrate 12 is set in the gap A that forms between the extension 17b of top board 19 and yoke 17.
The operation of this traditional bone conductors vibrator 10 will be described now, hereinafter.
When the electric current from the external power source (not shown) is applied on the voice coil loudspeaker voice coil 20, between voice coil loudspeaker voice coil 20 and the magnetic loop that forms by top board 19, magnetic field 18 and yoke 17, just produce magnetic field.Under the state that voice coil loudspeaker voice coil 20 is fixed, along with the sense of current that flows along voice coil loudspeaker voice coil 20 is changed repeatedly, top board 19, magnet 18 and yoke 17 carry out up-down vibration according to the Fleming Left Hand Rule.
Meanwhile, the damper 16 that is installed on the yoke 17 of the vibration of above-mentioned magnetic loop is limited to a certain degree.This class vibration is passed to user's head by the pars papillaris 15 of vibration section 14, thus by using bone conduction auditory to make the user can aware voice signal.
A kind of exemplary earphone of bone conduction auditory that adopts is disclosed in U.S. Pat 5,323,468 (publish in June, 1994, Bottesch) in.
Yet, for above-mentioned traditional bone conduction vibrator is applied to phone, earphone etc., just must improves delivery efficiency and add broadband, simplify the structure of vibrator simultaneously.But, be difficult to satisfy these requirements.In other words, in order to improve delivery efficiency, it is big that the size of magnet and yoke must become.And this just causes the increase of bone conduction vibrator whole dimension.In contrast, when vibrator was diminished, delivery efficiency will reduce.Therefore, just be difficult to obtain the optimum condition of traditional bone conductors vibrator.
Another problem comes from the fact that interchange details (details of the communication) is leaked owing to the structure of conventional vibrator.
Disclosure of an invention
The purpose of this invention is to provide a kind of frequency band broadening and delivery efficiency and improve the bone conduction vibrator that the while structure is simplified again.
In order to achieve the above object, the invention provides a kind of bone conduction vibrator, comprising: a framework is shaped as the drum with open top end and bottom; One substrate is installed in the unlimited bottom of framework; One armature is installed in the framework open top end, and comprises an edge part and a vibrating membrane, and this vibrating membrane is integrally formed with the marginal portion when reducing on every side in the marginal portion, and this armature is regulated frequency band according to size, thickness and the material of vibrating membrane; One yoke that is used for the concentration magnetic flux comprises that one supports the main body and the peripheral integrally formed extension downwards along main body of armature; One magnet is installed in the extension of yoke, makes the upper surface of magnet contact the lower surface of yoke main body; One top board is installed in the extension of yoke, makes the upper surface of top board contact the lower surface of magnet, and forms magnetic loop with magnet and yoke; With a voice coil loudspeaker voice coil, be arranged in the gap that forms between top board and the yoke extension, and be adhered on the substrate.
This armature comprises that also a large-diameter portion of extending from the center of vibrating membrane lower surface, is from a coaxial minor diameter of extending down of this large-diameter portion and a projection along peripheral surface formation under the marginal portion downwards.
And this framework forms a bearing along its top inner peripheral surface, and described projection is sitting on this bearing.
The terminal of one PCB is connected on the part of substrate edges, be applied on this PCB terminal from the electric current of external power source, and an end of a coil is welded on this PCB terminal, and the other end of this coil is connected the bottom of voice coil loudspeaker voice coil.When the electric current from external power source is applied on the PCB terminal and supplies with this voice coil loudspeaker voice coil via this coil, form the attraction in magnetic field and repel by top board, magnet and yoke and just make top board, magnet and yoke up-down vibration integrally, and vibrating membrane or the substrate of this vibration by the armature health that is passed to the user.
And, being configured as on the lower surface that discoid bolster is bonded in the upper surface of armature chatter film and substrate respectively, and directly contacting user's health, these bolsters are according to the output of this vibrator of THICKNESS CONTROL.
Brief description of drawings
From description below in conjunction with accompanying drawing, will understand the present invention better, and each purpose of the present invention and advantage will be more obvious also, wherein:
Fig. 1 is the sectional view of a traditional bone conductors vibrator;
Fig. 2 is the expansion perspective view according to the bone conduction vibrator of one embodiment of the present invention; And
Fig. 3 is the sectional view according to the bone conduction vibrator of one embodiment of the present invention.
Implement best way of the present invention
Hereinafter, describe the present invention with reference to the accompanying drawings in detail.
Fig. 2 and Fig. 3 are respectively expansion perspective view and the sectional views according to bone conduction vibrator of the present invention.
As shown in FIG., bone conduction vibrator 50 of the present invention comprises a framework 51 and a circular substrate 52, and this framework 51 is shaped as the cylindrical of hollow, has open top end and bottom, and limits the sidewall of vibrator 50; And substrate 52 is installed in the bottom that framework 51 opens wide.
One PCB (printed circuit board (PCB)) terminal 53 is connected on the part at substrate 52 edges, be applied on this PCB terminal 53 from the electric current of external power source (not shown), and an end of a coil 54 is welded on this PCB terminal 53.
In the interior volume of framework 51 and substrate 52 formation, the columniform voice coil loudspeaker voice coil 55 of a hollow is bonded on the substrate 52.Coil 54 passes substrate 52 and stretches in the framework 51, and this elongated end of coil 54 is connected the lower end of voice coil loudspeaker voice coil 55.Under this state, when the electric current from external power source was applied on the PCB terminal 53 and supplies with voice coil loudspeaker voice coils 55 via coil 54, voice coil loudspeaker voice coil 55 just induced the variation in (induce) magnetic field from the electric energy of voice signal.
One armature (armature) 56 is coupling in the open top of framework 51, this armature 56 comprises an edge part 56a and a Round Membranes (diaphragm) 56b, and wherein this vibrating membrane 56b is integrally formed with marginal portion 56a when the inner rim along marginal portion 56a descends.Be used for the projection 56c that armature 56 is coupling on the framework 51 is formed along the peripheral surface of the bottom of marginal portion 56a, and the bearing 51a that projection 56c sits thereon forms along circumferential surface in the top of framework 51.Projection 56c is bonded on the bearing 56a.
And a cylindrical large-diameter portion 56d extends downwards from the lower surface center of armature 56, and a cylindrical minor diameter 56e extends downwards coaxially from this large-diameter portion 56d.
The shape of armature 56, weight and hardness have determined the frequency band of bone conduction vibrator 50 of the present invention.
Preferably armature 56 is made by aluminium or non-corrosive material.
The yoke 57 that is used for the concentration magnetic flux is set at the inside of vibrator 50.Yoke 57 comprises a circular body 57a and an extension 57b, wherein the large-diameter portion 56d of armature 56 and ladder (stepped) part between the minor diameter 56e are supported in this circular body 57a contact, and this extension 57b is integrally formed downwards along the periphery of circular body 57a.The hole that its minor diameter 56e passes on the armature 56 is formed on the center of yoke main body 57a, and extension 57b is set at the outer surface that closes on voice coil loudspeaker voice coil 55.Preferably, yoke 57 is to make by the pure iron with low magnetic resistance is cut or forges.
One cylinder-shaped magnet 58 is installed in the extension 57b of yoke 57, makes the upper surface of magnet 58 contact the lower surface of yoke body 57a.Magnet 58 heart position therein forms a through hole, and the minor diameter 56e of armature 56 inserts in this through hole.
And, be used for the item plate 59 that magnet 58 and yoke 57 form magnetic loop when contact magnet 58 and being arranged within the voice coil loudspeaker voice coil 55, be installed in magnet 58 below.Also promptly, voice coil loudspeaker voice coil 55 is set in the clearance G that forms between the extension 57b of top board 59 and yoke 57.
Be configured as on the lower surface that discoideus bolster 60a and 60b be bonded in the upper surface of armature 56 its vibrating membrane 56b and substrate 52 respectively.Bolster 60a and 60b are preferably made by the material with high specific gravity and good damping efficiency.These bolsters 60a directly contacts human body, particularly head with 60b, and the vibration characteristics of control vibrator 50.Specifically, the output of vibrator 50 changes according to the thickness of bolster 60a and 60b.
Now, operation and effect according to bone conduction vibrator 50 of the present invention will be described hereinafter.
When the electric current from external power source was applied on the PCB terminal 53, electric current was supplied with voice coil loudspeaker voice coil 55 via coil 54.Voice coil loudspeaker voice coil 55 induces the variation in magnetic field from the electric energy of voice signal then.
Also promptly, when voice coil loudspeaker voice coil 55 is supplied to electric current, produce magnetic field at voice coil loudspeaker voice coil 55 places, wherein this voice coil loudspeaker voice coil 55 is set in the magnetic loop that is formed by top board 59, magnet 58 and yoke 57.According to the Fleming Left Hand Rule, under the situation that voice coil loudspeaker voice coil 55 is fixed, form the attraction in magnetic field and the assembly up-down vibration that repulsion is formed top board 59, magnet 58 and yoke 57 by voice coil loudspeaker voice coil 55, top board 59, magnet 58 and yoke 57.This vibration makes the user can aware voice signal by using bone conduction auditory (hearing) by being bonded in the bolster 60a on the armature 56 vibrating membrane 56b or being bonded in the head that bolster 60b on the substrate 52 is delivered to the user.
Hereinafter, the traditional bone conduction vibrator 10 (referring to Fig. 1) of contrast is illustrated the frequency characteristic of bone conduction vibrator 50 of the present invention.
At first, in bone conduction vibrator 50 of the present invention, the vibration that produces from armature 56 vibrating membrane 56b is defined as vibrating forward, and the vibration that produces from substrate 52 is defined as to after vibration.
Under the same conditions the frequency band that will vibrate forward with make comparisons to the frequency band of after vibration, forward vibration have about 150 to 15, the frequency band of 000Hz, and have to after vibration about 120 to 18, the frequency band of 000Hz.
By adopting above-mentioned frequency characteristic, bone conduction vibrator 50 can be applied to product fully, make the vibration applications of substrate 52 in wide band relatively product, and the vibration applications of vibrating membrane 56 is in the product of relative narrow-band.
In addition, when traditional vibrator 10 has with vibrator 50 of the present invention (also be in same magnetic loop aspect size and the material, top board, magnet and yoke) when being identical winding voice coil loudspeaker voice coil, traditional vibrator 10 has about 260 to 2, the frequency band of 000Hz, and this significantly is narrower than the frequency band of vibrator 50 of the present invention.
In addition, vibrator 50 above-mentioned maximum outputs to after vibration of the present invention are higher than conventional vibrator 10 about 10dB or more.
On the other hand, the frequency band of bone conduction vibrator 50 of the present invention and output dependence are in armature 56 and bolster 60a and 60b.For example, the vibrating membrane 56b of armature 56 is big more thin more, and frequency band is just wide more; The vibrating membrane 56b of armature 56 is more little thick more, and frequency band is just narrow more.Equally, bolster 60a and 60b are thick more, and the whole output of vibrator 50 is just low more, and this is because the damping efficiency of bolster 60a and 60b is enhanced.
Except the change of this shape, change material and the thickness of armature 56 and bolster 60a, 60b by many-side, just can control the frequency band and the output of bone conduction vibrator of the present invention institute application product fully.
As detailed above, bone conduction vibrator of the present invention forwards to vibration (being the vibrating membrane of armature) and the vibration (being substrate) of backward directions between have different frequency characteristics.Therefore, only change vibrator forwards to the position of backward directions, just can satisfy the demand of vibrator institute application product.
Simultaneously, contrast traditional vibrator, vibrator of the present invention has wideer frequency band and stronger output frequency.Along with the improvement of armature and bolster shape, material and hardness, just can when reducing the vibrator whole dimension, easily regulate frequency band and output.
And, because armature and bolster have substituted the traditional vibrating mass that comprises pars papillaris, therefore just can eliminate the pain that causes by the contact pars papillaris, and can also easily seek the osteoacusis zone of user's health by means of big relatively bolster.
In addition, the fail safe that can obtain to exchange by the bolster that presents acoustic emission.
Although at length illustrate and described the present invention with reference to its certain embodiments, but be to be understood that, only otherwise the scope that breaks away from spirit of the present invention and be defined by the following claims, those of ordinary skill in the art can make various changes aspect form and the details.
Claims (6)
1. bone conduction vibrator comprises:
One framework is shaped as the drum with open top end and bottom;
One substrate is installed in the unlimited bottom of described framework;
One armature, be installed in the described framework open top end, and comprise an edge part and a vibrating membrane, described vibrating membrane is integrally formed with described marginal portion when the inner rim along described marginal portion reduces, and described armature is regulated frequency band according to size, thickness and the material of described vibrating membrane;
One yoke that is used for the concentration magnetic flux comprises that one supports the main body and of described armature along the peripheral integrally formed extension downwards of described main body;
One magnet is installed in the extension of described yoke, makes the upper surface of described magnet contact the lower surface of described yoke main body;
One top board is installed in the extension of described yoke, makes the upper surface of described top board contact the lower surface of described magnet, and forms magnetic loop with described magnet and yoke; With
One voice coil loudspeaker voice coil is arranged in the gap that forms between described top board and the described yoke extension, and is adhered on the described substrate.
2. bone conduction vibrator as claimed in claim 1, wherein said armature comprise that also a large-diameter portion of extending from the center of described vibrating membrane lower surface, is from a coaxial minor diameter of extending down of this large-diameter portion and a projection along peripheral surface formation under the described marginal portion downwards; And
Described framework forms a bearing along its top inner peripheral surface, and described projection is sitting on this bearing.
3. bone conduction vibrator as claimed in claim 2, wherein said armature is to be made by aluminum.
4. bone conduction vibrator as claimed in claim 2, wherein said armature are to be made by stainless material.
5. bone conduction vibrator as claimed in claim 1, wherein the terminal of a PCB is connected on the part of described substrate edges, electric current from external power source is applied on this PCB terminal, and an end of a coil is welded on this PCB terminal, and the other end of this coil is connected the bottom of described voice coil loudspeaker voice coil;
Whereby, when the electric current from external power source is applied on the PCB terminal and supplies with described voice coil loudspeaker voice coil via this coil, form the attraction in magnetic field and repel by described top board, magnet and yoke and just make described top board, magnet and yoke up-down vibration integrally, and vibrating membrane or the substrate of this vibration by the described armature health that is passed to the user.
6. bone conduction vibrator as claimed in claim 1, wherein be configured as on the lower surface that discoid bolster is bonded in the upper surface of described armature chatter film and described substrate respectively, and directly contacting user's health, these bolsters are according to the output of this vibrator of THICKNESS CONTROL.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2000/000991 WO2002019759A1 (en) | 2000-09-01 | 2000-09-01 | Bone conduction vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1454443A true CN1454443A (en) | 2003-11-05 |
Family
ID=19198264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00819928.0A Pending CN1454443A (en) | 2000-09-01 | 2000-09-01 | Bone conduction vibrator |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1336320A1 (en) |
| JP (1) | JP2004507951A (en) |
| CN (1) | CN1454443A (en) |
| AU (1) | AU2000270392A1 (en) |
| WO (1) | WO2002019759A1 (en) |
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| WO2008003235A1 (en) * | 2006-06-28 | 2008-01-10 | Qiang Hu | Bone sensing audio bi-directional transmitting and receiving device |
| CN101854576A (en) * | 2010-06-23 | 2010-10-06 | 深圳市特灵通数码通讯发展有限公司 | Dual-film dual-conduction multi-channel earphone |
| CN101931837A (en) * | 2010-08-06 | 2010-12-29 | 深圳市雷富溢电子科技有限公司 | Bone conduction and air conduction vibrator and earphone thereof |
| CN102014328A (en) * | 2010-12-24 | 2011-04-13 | 金在善 | Bone-conduction headphone |
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| CN104936108A (en) * | 2015-06-11 | 2015-09-23 | 胡锦翔 | Bone conduction loudspeaker device |
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| WO2015165308A1 (en) * | 2014-04-28 | 2015-11-05 | 苏州佑克骨传导科技有限公司 | Bone conduction vibrator capable of improving low-frequency sound effects |
| CN106028237A (en) * | 2016-06-30 | 2016-10-12 | 汉得利（常州）电子股份有限公司 | Driver with three-in-one function of bone conduction, tactile feedback and speaker |
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| JP4307446B2 (en) * | 2004-01-16 | 2009-08-05 | 株式会社テムコジャパン | Mobile phone using bone conduction device |
| JP4631070B2 (en) * | 2005-05-23 | 2011-02-16 | 並木精密宝石株式会社 | Bone conduction speaker |
| JP4952211B2 (en) * | 2006-11-22 | 2012-06-13 | コスモギア株式会社 | Bone conduction earphone |
| WO2008140149A1 (en) * | 2007-05-15 | 2008-11-20 | Ifeelu Inc. | Small-sized sound receiver for producing body-sensing vibration |
| US8107648B2 (en) | 2008-06-05 | 2012-01-31 | Cosmogear Co., Ltd. | Bone conduction earphone |
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2000
- 2000-09-01 WO PCT/KR2000/000991 patent/WO2002019759A1/en not_active Application Discontinuation
- 2000-09-01 CN CN00819928.0A patent/CN1454443A/en active Pending
- 2000-09-01 AU AU2000270392A patent/AU2000270392A1/en not_active Abandoned
- 2000-09-01 EP EP00958992A patent/EP1336320A1/en not_active Withdrawn
- 2000-09-01 JP JP2002522454A patent/JP2004507951A/en active Pending
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| WO2008003235A1 (en) * | 2006-06-28 | 2008-01-10 | Qiang Hu | Bone sensing audio bi-directional transmitting and receiving device |
| CN101854576A (en) * | 2010-06-23 | 2010-10-06 | 深圳市特灵通数码通讯发展有限公司 | Dual-film dual-conduction multi-channel earphone |
| CN101931837A (en) * | 2010-08-06 | 2010-12-29 | 深圳市雷富溢电子科技有限公司 | Bone conduction and air conduction vibrator and earphone thereof |
| CN102014328A (en) * | 2010-12-24 | 2011-04-13 | 金在善 | Bone-conduction headphone |
| CN104813681A (en) * | 2013-02-15 | 2015-07-29 | 耳蜗有限公司 | Conformable pad bone conduction device |
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| WO2015165310A1 (en) * | 2014-04-28 | 2015-11-05 | 苏州佑克骨传导科技有限公司 | Noise reduction bone conduction vibrator |
| CN104936108A (en) * | 2015-06-11 | 2015-09-23 | 胡锦翔 | Bone conduction loudspeaker device |
| CN104936108B (en) * | 2015-06-11 | 2018-06-26 | 深圳市喜声多媒体技术有限公司 | A kind of bone-conduction speaker device |
| CN106028237A (en) * | 2016-06-30 | 2016-10-12 | 汉得利（常州）电子股份有限公司 | Driver with three-in-one function of bone conduction, tactile feedback and speaker |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2002019759A1 (en) | 2002-03-07 |
| AU2000270392A1 (en) | 2002-03-13 |
| JP2004507951A (en) | 2004-03-11 |
| EP1336320A1 (en) | 2003-08-20 |
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