CN101662717B - In-ear minitype rare earth moving iron type loudspeaker - Google Patents
In-ear minitype rare earth moving iron type loudspeaker Download PDFInfo
- Publication number
- CN101662717B CN101662717B CN200810195701XA CN200810195701A CN101662717B CN 101662717 B CN101662717 B CN 101662717B CN 200810195701X A CN200810195701X A CN 200810195701XA CN 200810195701 A CN200810195701 A CN 200810195701A CN 101662717 B CN101662717 B CN 101662717B
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- Prior art keywords
- loudspeaker
- minitype
- ear
- rare earth
- iron core
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 14
- 150000002910 rare earth metals Chemical class 0.000 title claims description 13
- 229910052790 beryllium Inorganic materials 0.000 claims description 9
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000006247 magnetic powder Substances 0.000 claims description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 2
- 230000010287 polarization Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 235000014676 Phragmites communis Nutrition 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 210000005069 ears Anatomy 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000005520 electrodynamics Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to a loudspeaker which is an electroacoustic device converting electric energy to mechanical energy and then converting the mechanical energy to acoustic energy. The loudspeaker is widely applied to the communication field, the broadcast field, the educational field, the daily life field and the like. Various wired/wireless earphones and hearing aids which are easy to wear are more in need of a minitype loudspeaker with an ultra-small volume and clear voice. Most of ear-level hearing aids on the current market use a minitype magnetic loudspeaker of 6.35*4.34*3.02 (mm), but the sounding mechanism of the magnetic loudspeaker is the same as a 'vibrating reed type' horn which is washed out, has poor tone quality and uses a transmission rod. The in-ear minitype rare earthmoving iron type loudspeaker does not have an electric coil with many number of windings and heavy weight of a moving-coil loudspeaker. The electro-acoustic conversion is replaced by a rare earth element with light weight and high magnetic flow, and the rare earth element is especially suitable for use in ears due to the excellent electro-acoustic indexes and ultra-small volume.
Description
Technical field
The present invention selects rare-earth magnetic composite material and moving (magnetic) iron formula electroacoustic principle for use, processes in-ear minitype rare earth moving iron type loudspeaker.
Background technology
Loud speaker is to convert electrical energy into mechanical energy, again mechanical energy is converted to the electro-acoustic element of acoustic energy, and it is widely used in every field such as communication, broadcasting, education, daily life.Existing market is the widest with electrodynamic type (also claiming moving-coil type) loudspeaker applications, and loud speaker is narrow because of frequency band for electromagnetic type (also claiming reed), distortion big, lower tone seldom uses.Wear all kinds of easily wired, wireless headsets and hearing aids, more need extra small, the lamprophonic Microspeaker of volume.Now market Shang'er bei formula hearing aids uses the import minisize electromagnetic loud speaker of 6.35x4.34x3.02 (millimeter) mostly, its sound generating mechanism with by the superseded reed horn structure in market identical (" practical loudspeaker techniques handbook " book of writing with reference to Wang Yizhen).In-ear minitype rare earth moving iron type loudspeaker does not have coil-moving speaker to solve: should the few big technical barrier of inductance electromotive force in light weight, voice coil loudspeaker voice coil again of the voice coil loudspeaker voice coil number of turn.Hearing aids has specific (special) requirements to loud speaker: one. power little (microwatt level); Two. output impedance big (Shang kilohm); Three. highly sensitive, distortion is little; Four. volume is little, in light weight, and is suitable with earhole.In the in-ear minitype rare earth moving iron type loudspeaker, the solenoid that the number of turn is many, impedance is big is fixed, and sounding is little by weight, and the rare earth magnetic drive sound film that magnetic is strong vibrates to be realized.The present invention really easily solves an above-mentioned difficult problem, and the electroacoustic index of loud speaker is effectively promoted.
Summary of the invention
In-ear minitype rare earth moving iron type loudspeaker of the present invention; Different with the import minisize electromagnetic loud speaker that Shang'er bei formula hearing aids volume commonly used in market is 6.35x4.34x3.02 (millimeter), electromagnetic loudspeaker is replaced by the good dynamic speaker of tonequality because of lower tone.The in-ear minitype loud speaker, because environment for use is special, loud speaker must be accomplished: 1. volume little (less than earhole); 2. driving power little (microwatt level); 3. voice coil loudspeaker voice coil requires impedance high (solenoid must have thousands of circles); Four. highly sensitive, distortion is little.Above harsh conditions, dynamic speaker commonly used can't be realized at all.In-ear minitype rare earth moving iron type loudspeaker; Its electroacoustic conversion regime is neither electromagnetic type also is different from electrodynamic type; Iron formula that the present invention is called moving (magnetic); The conversion of its electroacoustic is little, in light weight by volume, the high rare earth magnetic of magnetic field intensity alternating electromagnetic field push away, draw effect down and sound membrane resonance sounding realize.Because the number of turn is many, the solenoid that impedance is big adopts fixed form, and sounding is by in light weight, and the rare earth magnetic drive sound film that magnetic is strong vibrates to be realized.Because of promoting the required tone currents very little (microampere order) of solenoid work, loud speaker just can produce little, the highly sensitive audio of distortion, is well suited for product employings such as hearing aids.The device of moving iron type loud-speaker can all be installed in the circular antimagnetic metal shell of 6 millimeters high 4 millimeters of diameters, really conforms to the interior loud speaker of hearing aids well and wants the characteristics that volume is extra small, audition is clear, placement is comfortable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1. metal shell 2. locating rings 3. sound films 4. magnet rings 5. solenoids 6. beryllium film alloy-iron cores
Embodiment
Cementation the audio-electromagnetically member of being made up of solenoid (5) and cylindrical beryllium film alloy-iron core (6) on the metal shell of in-ear minitype rare earth moving iron type loudspeaker of the present invention (1) inner bottom surface, has will the bond sound film (3) of magnet ring (4) of locating ring (2) fixing above the solenoid (5).Magnet ring (4) is to be formed by the NdFeB magnetic powder of radial polarization and the compound punch process of plastic cement.Sound film (3) is positioned at the end face top of solenoid (5) interior beryllium film alloy-iron core (6).The gap of sound film (3) and beryllium film alloy-iron core (6) end face is confirmed by factors such as the magnetic field intensity experiment of surface area, shape, thickness, soft durometer, quality, elastic force and the magnet ring (4) of sound film (3), selects the next adaptive location of the locating ring (2) of optimum thickness.Make the sensitivity of loud speaker, resonance frequency, technical indicators such as acoustic pressure, tonequality are confirmed with reference to " practical loudspeaker techniques handbook " book computational methods and related experiment that Wang Yizhen writes.All device is installed in 6 millimeters of diameters, and in high 4 millimeters circular antimagnetic metal shell (1) chamber, sound spreads out of from top centre bore.
Claims (1)
1. in-ear minitype rare earth moving iron type loudspeaker; It is characterized in that: beryllium film alloy-iron core (6) is packed in the solenoid (5); Magnet ring (4) sticks on the central authorities of sound film (3) and over against the end face of beryllium film alloy-iron core (6), sound film (3) is regulated the location with the end face distance of beryllium film alloy-iron core (6) by locating ring (2), and all devices are contained in 6 millimeters of diameters, the high 4 millimeters circular antimagnetic metal shell (1); Metal shell has pore on (1); Magnet ring (4) is by the NdFeB magnetic powder of radial polarization and plastic cement is compound is stamped to form, and the height of magnet ring (4) is greater than the spacing of magnet ring (4) with beryllium film alloy-iron core (6) end face, when solenoid (5) has tone currents to pass through; The end face of solenoid (5) interior beryllium film alloy-iron core (6) just produces the push-and-pull action of alternating magnetic field and magnet ring (4) generation, drives resilient macromolecular material sound film (3) vibration sounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810195701XA CN101662717B (en) | 2008-08-29 | 2008-08-29 | In-ear minitype rare earth moving iron type loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810195701XA CN101662717B (en) | 2008-08-29 | 2008-08-29 | In-ear minitype rare earth moving iron type loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101662717A CN101662717A (en) | 2010-03-03 |
| CN101662717B true CN101662717B (en) | 2012-08-01 |
Family
ID=41790424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810195701XA Active CN101662717B (en) | 2008-08-29 | 2008-08-29 | In-ear minitype rare earth moving iron type loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101662717B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355617B (en) * | 2011-08-15 | 2014-04-16 | 苏州恒听电子有限公司 | Moving-iron unit for loudspeaking device |
| CN103152679A (en) * | 2013-03-14 | 2013-06-12 | 胡宗科 | Electromagnetism transient magnetic loudspeaker |
| CN107454521A (en) * | 2017-07-25 | 2017-12-08 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly method |
| CN109246514B (en) * | 2018-09-30 | 2020-05-08 | 歌尔科技有限公司 | Wireless loudspeaker and earphone |
| CN110035365A (en) * | 2019-05-09 | 2019-07-19 | 深圳市信维声学科技有限公司 | Electromagnetic levitation type Microspeaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069156U (en) * | 1990-06-16 | 1991-01-09 | 周金平 | Electronic magneto loud speaker |
| CN1277792A (en) * | 1998-11-19 | 2000-12-20 | 微技术公司 | Electric-acoustic transducer having moving magnet and transducing method thereof |
| CN2749209Y (en) * | 2004-11-03 | 2005-12-28 | 广州君悦电子有限公司 | Ultra-high pitch loudspeaker |
-
2008
- 2008-08-29 CN CN200810195701XA patent/CN101662717B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069156U (en) * | 1990-06-16 | 1991-01-09 | 周金平 | Electronic magneto loud speaker |
| CN1277792A (en) * | 1998-11-19 | 2000-12-20 | 微技术公司 | Electric-acoustic transducer having moving magnet and transducing method thereof |
| CN2749209Y (en) * | 2004-11-03 | 2005-12-28 | 广州君悦电子有限公司 | Ultra-high pitch loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101662717A (en) | 2010-03-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA SHANGQIU POWER SUP Effective date: 20150303 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150303 Address after: 213163 Jiangsu city of Changzhou province cattle bridge Kuang Yan Zheng Road No. 59 Patentee after: Jiang Mingxing Patentee after: State Grid Corporation of China Patentee after: Shangqiu Power Supply Company of State Grid Henan Electric Power Company Address before: 213163 Jiangsu city of Changzhou province cattle bridge Kuang Yan Zheng Road No. 59 Patentee before: Jiang Mingxing |