CN102497611B - Bone conduction speaker driver with reduced volume - Google Patents
Bone conduction speaker driver with reduced volume Download PDFInfo
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- CN102497611B CN102497611B CN201110438082.4A CN201110438082A CN102497611B CN 102497611 B CN102497611 B CN 102497611B CN 201110438082 A CN201110438082 A CN 201110438082A CN 102497611 B CN102497611 B CN 102497611B
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- conduction speaker
- vibration
- plate
- bone conduction
- magnet
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 37
- 238000012856 packing Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 5
- 210000000860 cochlear nerve Anatomy 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000000883 ear external Anatomy 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
Abstract
The invention discloses a bone conduction speaker driver with a reduced volume. The bone conduction speaker driver comprises a panel, a vibration conducting sheet, a vibrating board and a bottom plate, wherein an inner magnet and an annular magnet are fixedly arranged on the bottom plate; an inner magnetic conducting plate is fixedly arranged on the top surface of the inner magnet; an annular magnetic conducting plate is fixedly arranged on the top surface of the annular magnet; a space is reserved between the annular magnetic conducting plate and the inner magnetic conducting plate; a voice coil adhered to the lower side of the vibrating plate is extended downwards to be arranged in the space; and a gasket is arranged on the top surface of the annular magnetic conducting plate and is fixedly connected with the edge of the vibration conducting sheet. Due to the adoption of the gasket and a double-magnet structure, the sensitivity of the bone conduction speaker driver is greatly improved; and meanwhile, a shell is omitted and the vibration conducting sheet is directly fixed on a magnetic circuit system through the gasket, thus the effect of reducing the volume of the bone conduction speaker driver is achieved.
Description
Technical field
The present invention relates to a kind of bone conduction speaker driver and reduce Volume design scheme.
Background technology
Why people can hear sound, is because airborne vibration has been delivered to ear-drum by external ear duct vibration, by the film formed vibratory drive people's of ear auditory nerve.
During bone-conduction speaker work, the shell that driver promotes bone-conduction speaker produces vibration, and this vibration frequency is in audiorange.Because the shell of bone-conduction speaker is close on people's skin, so the vibration that bone-conduction speaker produces is delivered to people's auditory nerve by people's skin, hypodermis and bone, thereby make people hear sound.
Fig. 1 is the longitudinal section of the bone-conduction speaker device structure of prior art.This bone-conduction speaker generally includes: body 1, and it has the drum that open on top; Yoke 2, its bottom and its center being arranged in body 1 has lug boss 3; Toroidal magnet 4, its formation is also fixed on the edge of yoke 2, and stays out preset space length with the edge of above-mentioned lug boss 3; Upper plate 5, its formation also touches in the upside of described magnet 4; Papilla 9, it touches user's osteoacusis position, and vibration, by it, is transferred to user voice; Acoustic vibration plate 8, it is inserted in downside of papilla 9 with the part of opening of covering body 1, and is made by elastomeric material; Auxiliary vibration plate 7, it is inserted in the below of papilla 9, between papilla 9 and acoustics oscillating plate 8, arranges; Voice loop 6, it is connected with auxiliary vibration plate 7, and is inserted between the edge and toroidal magnet 4 of lug boss 3 of yoke 2; Protecgulum 10, for being fixed on body 1 by acoustic vibration plate 8; And electrical signal input unit 12,13 and 14, can be used to input electrical signal to voice loop 6.
In this bone-conduction speaker, acoustic vibration plate 8 is fixed on body 1, between the gap that voice loop 6 can be formed at edge and the toroidal magnet 4 of the lug boss 3 of yoke 2, vibrates.Visible, body 1 is to form gap between vibrational system and magnetic system, vibrative critical component.The magnetic field intensity that toroidal magnet 4 is given birth in voice loop 6 energising generation currents inductions is occurring to change, inductance also changes thereupon, thereby cause that oscillating movement longitudinally also occurs auxiliary vibration plate 7, acoustic vibration plate 8 also moves along with the motion of auxiliary vibration plate 7, thereby the vibration of acoustic vibration plate 8 is afterwards transferred to papilla 9, makes papilla 9 vibrations.The vibration of papilla 9 transmits to stimulate auditory nerve by user's bone, thereby makes people hear sound.
Yet, because the oscillating plate periodic vibration of bone conduction speaker driver needs the gap of lengthwise movement, so prior art is had to produce by the support of acoustic vibration plate and shell or body the space needing, this also makes to have increased size on device, caused final Headphone device overall volume to increase, cannot be to the future development of miniaturization.In addition, the magnet structure of prior art is single magnet structure, only have toroidal magnet 4, and yoke 2 is magnetic conductors, and leakage field is larger like this, can not have enough magnetic flux distribution, the level of sensitivity of having limited to bone-conduction speaker when reducing volume.
The size of bone-conduction speaker is less, and market application is just more extensive., the size of bone-conduction speaker is less, and sensitivity is just lower.So, how can keep sensitivity constant even higher in the situation that, the size that as far as possible reduces bone-conduction speaker just becomes a difficult problem highly significant.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of bone conduction speaker driver that reduces volume
,improve existing bone-conduction speaker, cancel shell and by increasing packing ring, vibration-transmitting plate be directly fixed on the magnetic circuit system after improvement, thereby realizing the scheme that bone conduction speaker driver reduces volume.
Technical scheme of the present invention comprises:
Reduce a bone conduction speaker driver for volume, its setting comprises a panel, vibration-transmitting plate and oscillating plate, and wherein, described panel is fastened on the center of described vibration-transmitting plate and described oscillating plate; And a base plate is fixedly installed an inner magnet and a toroidal magnet on described base plate, described inner magnet is arranged on the center of described toroidal magnet, and and toroidal magnet between be provided with gap; At described inner magnet end face, be fixedly installed interior magnetic conductive board, at the end face of described toroidal magnet, be fixedly installed annular magnetic conductive board, between described annular magnetic conductive board and described interior magnetic conductive board, be provided with gap; One voice coil loudspeaker voice coil that is bonded in oscillating plate downside is arranged in described gap to downward-extension;
And, on the end face of described annular magnetic conductive board, be provided with a packing ring, and be fixedly connected with the edge of described vibration-transmitting plate.
Described bone conduction speaker driver, wherein, described panel central authorities are provided with a through hole, for deriving the wire of described voice coil loudspeaker voice coil.
Described bone conduction speaker driver, wherein, described panel is set to planar structure or arc structure.
Described bone conduction speaker driver, wherein, is provided with the groove of the described vibration-transmitting plate of engaging on described oscillating plate.
Described bone conduction speaker driver, wherein, each building block of described bone conduction speaker driver is bonding by glue.
A kind of bone conduction speaker driver that reduces volume provided by the present invention, owing to having adopted packing ring and dual magnetic body structure, effectively raises the sensitivity of bone conduction speaker driver; Meanwhile, cancellation shell, is directly fixed on vibration-transmitting plate on magnetic circuit system by increasing packing ring, thereby has realized the effect of bone conduction speaker driver minimizing volume.The present invention is owing to adopting dual magnetic body structure, and the distribution of its magnetic line of force is to have sealed magnetic loop, and leakage field is minimum like this, has also increased the magnetic flux distribution of magnetic circuit, causes sensitivity to increase.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the bone-conduction speaker device structure of prior art.
Fig. 2 is the longitudinal section of bone conduction speaker driver structure of the present invention.
Fig. 3 is the exploded perspective view of bone conduction speaker driver structure of the present invention.
Fig. 4 is the stereogram of bone conduction speaker driver structure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, will be described in more detail each preferred embodiment of the present invention.
The present invention reduces in the preferred embodiment of bone conduction speaker driver of volume, as shown in Figures 2 and 3, saved the shell of prior art, its structure is adjusted, this driver setting comprises: the vibrational system of panel 21, vibration-transmitting plate 15 and oscillating plate 16, its vibration-transmitting plate 15 has thin thickness and can increase elastic force, vibration-transmitting plate 15 is that the groove center that is stuck in oscillating plate 16 arranges, described panel 21 is set to planar structure or arcuate structure, and is fastened on the center of described vibration-transmitting plate 15 and described oscillating plate 16, what be bonded in oscillating plate 16 downsides is voice coil loudspeaker voice coil 19, annular magnetic conductive board 18, toroidal magnet 22, interior magnetic conductive board 20, inner magnet 23 and base plate 24 have formed magnetic system, described inner magnet 23 and described toroidal magnet 22 are set on described base plate 24, described inner magnet 23 is arranged on described toroidal magnet 22 center, and and toroidal magnet 22 between be provided with gap, at described inner magnet 23 end faces, be fixedly installed interior magnetic conductive board 20, end face at described toroidal magnet 22 is fixedly installed described annular magnetic conductive board 18 simultaneously, between described annular magnetic conductive board 18 and described interior magnetic conductive board 20, be also provided with gap, described voice coil loudspeaker voice coil 19 is arranged in described gap to downward-extension.
Described vibrational system is connected by packing ring 17 with magnetic system, and this packing ring is arranged on the end face of described annular magnetic conductive board 18, and is fixedly connected with the edge of described vibration-transmitting plate 15; This bone-conduction speaker is connected with outside by panel 21, then transfers vibrations to people's bone, and panel 21 is stuck in vibration-transmitting plate 15 and oscillating plate 16 centers arrange.The complete bone conduction speaker driver parts of the present invention as shown in Figure 4.
In the bone conduction speaker driver that reduces volume of the present invention, described annular magnetic conductive board 18, toroidal magnet 22, interior magnetic conductive board 20, inner magnet 23 and base plate 24 have formed magnetic system, in voice coil loudspeaker voice coil 19 energising generation currents induction and corresponding variation occurring raw magnetic field intensity, inductance also changes thereupon, make voice coil loudspeaker voice coil 19 that back and forth movement longitudinally occur, and cause the vibration of oscillating plate 16, thereby vibration is passed to vibration-transmitting plate 15, finally by by panel 21 with after people's ear, the position such as cheek or forehead contacts and transfers vibrations to people's bone, thereby producing sound.
The present invention adopts the dual magnetic body structure by toroidal magnet 22 and inner magnet 23, the polarity in magnetic field arranges according to contrary mode, such as the upper end of inner magnet 23 is N utmost points, when lower end is the S utmost point, toroidal magnet 22 is the S utmost point by employing upper end, and lower end is the set-up mode of the N utmost point.Otherwise the upper end that is exactly inner magnet 23 is the S utmost point, when lower end is the N utmost point, toroidal magnet 22 is the N utmost point by employing upper end, and lower end is the S utmost point.Interior magnetic conductive board 20 above magnet and annular magnetic conductive board 18 are because the effect of magnet also produces contrary polarity.Voice coil loudspeaker voice coil 19 is in the gap of interior magnetic conductive board 20 and annular magnetic conductive board 18, and the magnetic line of force in magnetic system can be because of being not that the effect of single magnet and manifest outward expands, and the magnetic line of force can only concentrate in the gap of interior magnetic conductive board 20 and annular magnetic conductive board 18.Therefore, at voice coil loudspeaker voice coil 19, applied after AC signal and in closed magnetic field, had larger active force to carry out longitudinal back and forth movement, thereby reached the effect of the sensitivity that improves bone-conduction speaker.The present invention adopts the dual magnetic body structure of toroidal magnet 22 and inner magnet 23, and the distribution of its magnetic line of force is to have sealed magnetic loop, and leakage field is minimum like this, has also increased the magnetic flux distribution of magnetic circuit, causes sensitivity to increase.
In preferred embodiment of the present invention, as shown in Figure 2, in described bone conduction speaker driver, the central authorities of described panel 21 are provided with a through hole 211, and on corresponding vibration-transmitting plate 15 and oscillating plate 16, corresponding perforation is set, for deriving the wire 191 of described voice coil loudspeaker voice coil 19.This setup can make wire 191 vibrate with structures such as voice coil loudspeaker voice coil and vibration-transmitting plates, and avoids in prior art wire by the vibration disconnected problem of shaking.This technical pattern is different from prior art, prior art is that voice coil loudspeaker voice coil wire is gone to splicing ear from side fluting, and voice coil loudspeaker voice coil wire is unsettled stretching state at a middle segment distance, when signal input after vibration part, together with voice coil loudspeaker voice coil wire, do axial back and forth movement, easily cause wire to shake disconnected.
In the preferred embodiment of bone conduction speaker driver of the present invention, can be bonding by glue by its each building block, for reducing volume, be very helpful like this, because reduced by the mode of screw or injection mo(u)lding, assemble and the increase of the volume that causes.
The present invention is by having increased a packing ring 17, and cancelled the body of prior art and acoustic vibration plate is directly fixed on packing ring, reduced the volume of bone conduction speaker driver, and technique is simple, cost is lower; The bone-conduction speaker obtaining has avoided housing volume to become the problem that causes driver weight to increase greatly owing to having cancelled body, promotes it to miniaturization, to develop; Increase dual magnetic body structure, effectively raised the effect of the sensitivity of bone conduction speaker driver.Thereby expanded the application of bone-conduction speaker at commercial fields such as communication equipments.
Should be understood that, the above-mentioned description for preferred embodiment of the present invention is comparatively concrete, can not therefore think the restriction to scope of patent protection of the present invention, and scope of patent protection of the present invention should be as the criterion with claims.
Claims (3)
1. reduce a bone conduction speaker driver for volume, its setting comprises a panel, vibration-transmitting plate and oscillating plate, it is characterized in that, described panel is fastened on the center of described vibration-transmitting plate and described oscillating plate; And a base plate is fixedly installed an inner magnet and a toroidal magnet on described base plate, described inner magnet is arranged on the center of described toroidal magnet, and and toroidal magnet between be provided with gap; At described inner magnet end face, be fixedly installed interior magnetic conductive board, at the end face of described toroidal magnet, be fixedly installed annular magnetic conductive board, between described annular magnetic conductive board and described interior magnetic conductive board, be provided with gap; One voice coil loudspeaker voice coil that is bonded in oscillating plate downside is arranged in the gap between described annular magnetic conductive board and described interior magnetic conductive board to downward-extension;
And, on the end face of described annular magnetic conductive board, be provided with a packing ring, and be fixedly connected with the edge of described vibration-transmitting plate;
Described inner magnet is arranged according to contrary mode with the polarity of the magnetic field between described toroidal magnet;
Described panel central authorities are provided with a through hole, and on corresponding vibration-transmitting plate and oscillating plate, corresponding perforation are set, for deriving the wire of described voice coil loudspeaker voice coil;
On described oscillating plate, be provided with the groove of the described vibration-transmitting plate of engaging.
2. bone conduction speaker driver according to claim 1, is characterized in that, described panel is set to planar structure or arc structure.
3. according to the arbitrary described bone conduction speaker driver of claim 1 to 2, it is characterized in that, each building block of described bone conduction speaker driver is bonding by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438082.4A CN102497611B (en) | 2011-12-23 | 2011-12-23 | Bone conduction speaker driver with reduced volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438082.4A CN102497611B (en) | 2011-12-23 | 2011-12-23 | Bone conduction speaker driver with reduced volume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102497611A CN102497611A (en) | 2012-06-13 |
| CN102497611B true CN102497611B (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110438082.4A Active CN102497611B (en) | 2011-12-23 | 2011-12-23 | Bone conduction speaker driver with reduced volume |
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| CN (1) | CN102497611B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716738B (en) * | 2013-12-18 | 2018-06-26 | 上海超彩通信科技有限公司 | Vibrating speaker |
| CN104837086A (en) * | 2015-02-09 | 2015-08-12 | 胡锦翔 | Bone conduction earphone speaker |
| CN104936104B (en) * | 2015-06-11 | 2018-06-26 | 深圳市喜声多媒体技术有限公司 | A kind of vibrating speaker oscillator device of small size |
| 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 |
| CN105007551B (en) * | 2015-08-13 | 2017-04-19 | 深圳市韶音科技有限公司 | Method for improving sound quality of bone conduction earphone and bone conduction earphone |
| CN105050012A (en) * | 2015-08-24 | 2015-11-11 | 张扬 | Loudspeaker and assembling method thereof |
| CN105635920A (en) * | 2016-02-22 | 2016-06-01 | 成都聚智工业设计有限公司 | Novel audio vibration device |
| CN106210996B (en) * | 2016-08-09 | 2019-04-23 | 苏州倍声声学技术有限公司 | A kind of double vibration-transmitting plate bone-conduction speakers and its manufacturing method |
| WO2018081915A1 (en) * | 2016-11-01 | 2018-05-11 | 声电电子科技(惠州)有限公司 | Miniature loudspeaker with dual-washer structure |
| WO2019134162A1 (en) | 2018-01-08 | 2019-07-11 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN116156381A (en) * | 2023-02-21 | 2023-05-23 | 迈吉科(山东)医疗器械有限公司 | Bone conduction earphone with transducer provided with vibration supporting arm |
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| CN1675846A (en) * | 2002-08-16 | 2005-09-28 | 飞而康公司 | Subminiature bone vibrating speaker using the diaphragm and mobile phone thereby |
| CN1708183A (en) * | 2004-06-11 | 2005-12-14 | 日本先锋公司 | Speaker device and method of fabricating the same |
| CN2886960Y (en) * | 2006-03-22 | 2007-04-04 | 陈奚平 | Bone conduction loudspeaker |
| CN101543094A (en) * | 2007-04-26 | 2009-09-23 | 松下电器产业株式会社 | Speaker |
| CN202435600U (en) * | 2011-12-23 | 2012-09-12 | 深圳市韶音科技有限公司 | Volume-reduced bone conduction speaker actuator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201708914U (en) * | 2010-04-21 | 2011-01-12 | 歌尔声学股份有限公司 | Miniature moving-coil type electroacoustic transducer |
| CN201839420U (en) * | 2010-07-30 | 2011-05-18 | 歌尔声学股份有限公司 | Miniature moving coil type electroacoustic transducer |
| CN201967122U (en) * | 2011-01-07 | 2011-09-07 | 瑞声光电科技(常州)有限公司 | Magnetic circuit system and speaker applying same |
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2011
- 2011-12-23 CN CN201110438082.4A patent/CN102497611B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675846A (en) * | 2002-08-16 | 2005-09-28 | 飞而康公司 | Subminiature bone vibrating speaker using the diaphragm and mobile phone thereby |
| CN1708183A (en) * | 2004-06-11 | 2005-12-14 | 日本先锋公司 | Speaker device and method of fabricating the same |
| CN2886960Y (en) * | 2006-03-22 | 2007-04-04 | 陈奚平 | Bone conduction loudspeaker |
| CN101543094A (en) * | 2007-04-26 | 2009-09-23 | 松下电器产业株式会社 | Speaker |
| CN202435600U (en) * | 2011-12-23 | 2012-09-12 | 深圳市韶音科技有限公司 | Volume-reduced bone conduction speaker actuator |
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| CN102497611A (en) | 2012-06-13 |
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Denomination of invention: Bone conduction speaker driver with reduced volume Effective date of registration: 20190227 Granted publication date: 20141001 Pledgee: Bank of Jiangsu Limited by Share Ltd Shenzhen branch Pledgor: Shaoyin Science and Technology Co., Ltd., Shenzhen city Registration number: 2019440020020 |
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