CN109889959B - Microphone device - Google Patents
Microphone device Download PDFInfo
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- CN109889959B CN109889959B CN201910382039.7A CN201910382039A CN109889959B CN 109889959 B CN109889959 B CN 109889959B CN 201910382039 A CN201910382039 A CN 201910382039A CN 109889959 B CN109889959 B CN 109889959B
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- magnet steel
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- vibrating diaphragm
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Abstract
The present invention provides a kind of microphone devices, it includes frame and the vibrational system for being individually fixed in the frame and the magnetic circuit system with magnetic gap, and the vibrational system includes being fixed on the vibrating diaphragm of the frame and being fixed on the vibrating diaphragm and be inserted in the magnetic gap to drive the voice coil of the diaphragm oscillations sounding；The magnetic circuit system include the magnetic yoke for being fixed on the frame, the main magnet steel for being fixed on the magnetic yoke, be located at the main magnet steel opposite sides and with the main magnet steel interval formed the secondary magnet steel of the magnetic gap, be stacked at the main magnet steel close to the vibrating diaphragm side pole piece and folded set two first auxiliary magnet steel that be fixed on the main magnet steel and parallel interval setting, the pole piece is equipped with the accepting hole through thereon, and two the first auxiliary magnet steel are contained in the accepting hole.Compared with the relevant technologies, microphone device good reliability of the invention and acoustical behavior is excellent.
Description
Technical field
The present invention relates to acoustic-electric field more particularly to a kind of microphone devices for applying to portable electronic product.
Background technique
With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices
Among, mobile phone is undoubtedly most common, most portable mobile terminal device.Microphone device for playing sound is widely applied
Among the Intelligent mobile equipments such as present mobile phone.And it is used in the vibrational system of microphone device and magnetic circuit system is directly related to hair
The sound quality quality of acoustic device.
The vibrational system of the relevant technologies microphone device include be fixed on frame for vibration sounding vibrating diaphragm, be attached at institute
It states the voice coil of vibrating diaphragm, be supported in the voice coil far from described vibrating diaphragm one end for reinforcing the lateral stability elasticity of the voice coil
Support component；The magnetic circuit system includes the magnetic yoke for being fixed on frame, the main magnet steel for being fixed on the magnetic yoke, is respectively arranged at institute
It states main magnet steel opposite sides and forms two secondary magnet steel of magnetic gap with the main magnet steel interval and be stacked at the secondary magnet steel
Clamping plate.
However, the gap between the clamping plate and the vibrating diaphragm is larger in the microphone device of the relevant technologies, magnetic circuit system
The design of system fails sufficiently to play its performance, limits the acoustical behavior of the microphone device.
Therefore, it is really necessary to provide a kind of new microphone device solution above-mentioned technical problem.
Summary of the invention
Excellent and good reliability the microphone device the purpose of the present invention is to provide a kind of acoustical behavior.
In order to achieve the above objectives, the present invention provides a kind of microphone device comprising frame and is individually fixed in the basin
The vibrational system of frame and magnetic circuit system with magnetic gap, the vibrational system include being fixed on the vibrating diaphragm of the frame and solid
Due to the vibrating diaphragm and the magnetic gap is inserted in drive the voice coil of the diaphragm oscillations sounding；The magnetic circuit system includes solid
Due to the frame magnetic yoke, be fixed on the magnetic yoke main magnet steel, be located at the main magnet steel opposite sides and with it is described
Main magnet steel interval formed the secondary magnet steel of the magnetic gap, be stacked at the main magnet steel close to the vibrating diaphragm side pole piece and
Folded to set two first auxiliary magnet steel for being fixed on the main magnet steel and parallel interval setting, the pole piece is equipped with the receipts through thereon
Rong Kong, two the first auxiliary magnet steel are contained in the accepting hole.
Preferably, two the first auxiliary magnet steel are connected to the inside of the pole piece respectively.
Preferably, the main magnet steel is in rectangle, and the accepting hole is in rectangle, and two the first auxiliary magnet steel are respectively along institute
The long axis direction for stating accepting hole extends.
Preferably, the long axis of the main magnet steel is parallel with the long axis of the accepting hole.
Preferably, the magnetic circuit system further includes being stacked at the clamping plate of the secondary magnet steel and folding to set respectively to be fixed on two institutes
The second auxiliary magnet steel of secondary magnet steel is stated, the clamping plate includes two first segments and the connection two for being stacked at the secondary magnet steel respectively
Two second segments of a first segment, two second segment intervals are oppositely arranged and ring are collectively formed with the first segment
Shape, the first segment include being stacked at the first noumenon of the secondary magnet steel and by the first noumenon far from the main magnet steel
Side is recessed the recessing groove to be formed, and each second auxiliary magnet steel is respectively accommodated in the corresponding recessing groove.
Preferably, the first segment further includes being extended from the bottom of the recessing groove to the bending close to the vibrating diaphragm direction
Flange, the second auxiliary magnet steel are connected to the flange.
Preferably, the second auxiliary magnet steel is fixedly connected with the flange.
Preferably, the second segment includes being fixed on the second ontology of the frame and by the opposite of second ontology
Respectively to two ennations extended far from vibrating diaphragm direction bending, two ennations are respectively connected to two institutes at both ends
It states the first noumenon and second ontology is made to compare the first noumenon closer to the vibrating diaphragm.
Preferably, the vibrational system further includes being fixed on the frame and connecting with the voice coil far from described vibrating diaphragm one end
The resilient support assemblies connect, the resilient support assemblies and the clamping plate interval are arranged.
Preferably, the main magnet steel is in rectangle, and two secondary magnet steel are located at the main magnet steel long axis opposite sides,
The first auxiliary magnet steel is parallel to the secondary magnet steel；The resilient support assemblies include two, and the main magnet steel short axle is opposite
The resilient support assemblies are respectively arranged in two sides, and two resilient support assemblies are located at two second ontologies
Side far from the vibrating diaphragm.
Preferably, the direction of vibration of the main magnet steel and two secondary magnet steel along the vibrating diaphragm magnetizes, and each described
The magnetic pole of secondary magnet steel and the magnetic pole of the main magnet steel are oppositely arranged；The magnetizing direction of two the second auxiliary magnet steel is each perpendicular to
The magnetic pole of the direction of vibration, two the second auxiliary magnet steel is oppositely arranged, and each second auxiliary magnet steel is close to the master
The magnetic pole of the side of magnet steel is different close to the second auxiliary magnetic pole of side of magnet steel with the main magnet steel；Two described first
The magnetizing direction of auxiliary magnet steel is each perpendicular to the direction of vibration, and the magnetic pole of two the first auxiliary magnet steel is oppositely arranged, respectively
The first auxiliary magnet steel is close to the magnetic pole of the side of the second auxiliary magnet steel and the second auxiliary magnet steel close to described the
The magnetic pole of the side of one auxiliary magnet steel is different.
Compared with the relevant technologies, circlewise, i.e., microphone device of the invention designs the pole piece of the magnetic circuit system
The pole piece is equipped with the accepting hole through thereon, increases by two the first auxiliary magnet steel and is respectively accommodated in the accepting hole
And magnetic conductive loop is formed with the pole piece.Above structure makes full use of the space between the pole piece and the vibrating diaphragm, has
Effect improves the magnetic field strength of magnetic circuit system, the Magnetic driving power and symmetry of magnetic circuit system is improved, to enhance the hair
The acoustical behavior and reliability of acoustic device.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the schematic perspective view of microphone device of the present invention；
Fig. 2 is the part isometric structural exploded view of microphone device of the present invention；
Fig. 3 is the motor structure installation diagram of microphone device of the present invention.
Fig. 4 is the decomposed structural schematic diagram of Fig. 3；
Fig. 5 is the cross-sectional view of the line A-A along Fig. 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-Fig. 5, the present invention provides a kind of microphone device 100, including frame 1, is individually fixed in frame 1
Vibrational system 2 and magnetic circuit system 3, the magnetic circuit system 3 there is magnetic gap 10, the magnetic circuit system 3 is for driving the vibration
Dynamic 2 vibration sounding of system.
The vibrational system 2 includes the vibrating diaphragm 21 for being fixed on the frame 1, is fixed on the vibrating diaphragm 21 and is inserted in described
Magnetic gap 10 with drive the voice coil 22 of 21 vibration sounding of vibrating diaphragm and be fixed on the frame 1 and with the voice coil 22 it is separate
The resilient support assemblies 23 of 21 one end of vibrating diaphragm connection.
In present embodiment, the resilient support assemblies 23 are arranged with the magnetic circuit system 3 interval comprising elastic component
231 and it is connected to the auxiliary vibrating diaphragm 232 of the elastic component 231.
The frame 1 is fixed in described 231 one end of elastic component, and the other end is fixed on the separate vibrating diaphragm of the voice coil 22
21 one end, the auxiliary vibrating diaphragm 232 are connected to the elastic component 231.For example, the auxiliary vibrating diaphragm 232 fitting be fixed on it is described
The side far from the vibrating diaphragm 21 of elastic component 231.The resilient support assemblies 23 are by the voice coil 22 far from the vibrating diaphragm 21
One end connection support to the frame 1.On the one hand for reinforcing the vibrating effect of the vibrating diaphragm 21, improve the microphone device
100 acoustical behavior improves the stabilization of the microphone device 100 on the other hand for balancing waving for the vibrational system 2
Property.It should be noted that the resilient support assemblies 23 only include one of them of elastic component 231 or the auxiliary vibrating diaphragm 232,
This is also feasible.
More preferably, the elastic component 231 is flexible circuit board, and the voice coil 22 is electrically connected with the elastic component 231.One side
Face is used to improve the oscillation intensity and balance of the vibrational system 2, inhibits to wave, on the other hand for drawing the voice coil 22
To connection external power supply, the risk that voice coil leads are easily broken off when voice coil lead structure draws power supply is avoided.
The magnetic circuit system 3 include be fixed on the magnetic yoke 31 of the frame 1, the main magnet steel 32 for being fixed on the magnetic yoke 31,
It is located at 32 opposite sides of main magnet steel and is spaced with the main magnet steel 32 and form the secondary magnet steel 33 of the magnetic gap 10, fold
The main magnet steel 32 and parallel interval are fixed on close to the pole piece 34 of 21 side of vibrating diaphragm, folded set set on the main magnet steel 32
Two first auxiliary magnet steel 35 being arranged, the clamping plate 36 for being stacked at the secondary magnet steel 33 and being spaced with the resilient support assemblies 23
And two second auxiliary magnet steel 37.
The pole piece 34 is equipped with the accepting hole 30 through thereon.In the present embodiment, the pole piece 34 is annular in shape.It is described
Accepting hole 30 is also in rectangle, and the accepting hole 30 is for accommodating magnet steel to improve the magnetic field strength of magnetic circuit system 3, to improve
The Magnetic driving power of magnetic circuit system 3.
The first auxiliary magnet steel 35 is stacked at close 21 side of vibrating diaphragm of the main magnet steel 32.Two described first
Auxiliary magnet steel 35 is contained in the accepting hole 30, which makes two first auxiliary magnet steel 35 and the pole piece 34 formation
Magnetic conductive loop.To effectively increase the magnetic field strength of magnetic circuit system 3, the Magnetic driving power and symmetry of magnetic circuit system 3 are improved,
To enhance the acoustical behavior and reliability of the microphone device 100.
In the present embodiment, two the first auxiliary magnet steel 35 are connected to the pole piece 34 respectively.Certainly, it is not limited to
This, the first auxiliary magnet steel 35 can also be one and be contained in the accepting hole 30 to enhance magnetic field strength.
In present embodiment, the main magnet steel 32 is in rectangle, and the accepting hole 30 is in rectangle, two the first auxiliary magnetic
Steel 35 extends along the long axis direction of the accepting hole 30 respectively.More preferably, the long axis of the main magnet steel 32 and the accepting hole 30
Long axis it is parallel.The setting keeps the structural volume of magnetic circuit system 3 to maximize in which can use up big degree, to keep magnetic field strength.
The clamping plate 36 includes two first segments 361 and the connection two described for being stacked at the secondary magnet steel 33 respectively
One section 361 of two second segments 362, two second segments 362 intervals are oppositely arranged and common with two first segments 361
It is formed cyclic annular.
The first segment 361 includes the first noumenon 3611 for being stacked at the secondary magnet steel 33, by the first noumenon 3611
Be recessed the recessing groove 3612 to be formed and from the bottom of the recessing groove 3612 to close to institute far from main 32 side of magnet steel
State the flange 3613 that the bending of 21 direction of vibrating diaphragm extends.
Two the second auxiliary magnet steel 37, which are folded to set respectively, is fixed on two secondary magnet steel 33.Meanwhile each described second
Auxiliary magnet steel 37 is respectively accommodated in the corresponding recessing groove 3612, the structure make two second auxiliary magnet steel 37 with it is described
Flange 3613 forms magnetic conductive loop, to effectively increase the magnetic field strength of magnetic circuit system 3, the magnetic for improving magnetic circuit system 3 is driven
Power and symmetry, to enhance the acoustical behavior and reliability of the microphone device 100；In addition, the flange 3613
Being arranged can also provide guiding for the installation of the second auxiliary magnet steel 37, improve assembly efficiency.
In present embodiment, two the second auxiliary magnet steel 37 are connected to two flange 3613 respectively, more preferably,
The second auxiliary magnet steel 37 is fixedly connected with the flange 3613.
The second segment 362 includes being fixed on the second ontology 3621 of the frame 1 and by second ontology 3621
Opposite end respectively to far from 21 direction of vibrating diaphragm bending extend two ennations 3622.Two ennations 3622
It is respectively connected to two the first noumenons 3611 and second ontology 3621 is made to compare the first noumenon 3611 more to lean on
The nearly vibrating diaphragm 21 allows bit space to be formed, for accommodating the resilient support assemblies 23.
More preferably, the ennation 3622 is mutually perpendicular to second ontology 3621, i.e., the described ennation 3622 is by institute
It states the second ontology 3621 to extend vertically to be formed, formation makes bit space bigger.
In present embodiment, the resilient support assemblies 23 include two, and the main 32 short axle opposite sides of magnet steel is respectively set
The resilient support assemblies 23 are set, the resilient support assemblies 23 are arranged with the clamping plate 36 interval.Two elasticity
Support component 23 is centrosymmetric structure about the main magnet steel 32, which makes the vibration balancing of the vibrational system 2 more
It is good.
That is, in present embodiment, two resilient support assemblies 23 and two the second auxiliary magnet steel 37
The different opposite sides of the main magnet steel 32 are located at, are arranged jointly around the main magnet steel 32.
In present embodiment, the main magnet steel 32 is in rectangle, and two secondary magnet steel 33 are located at the main magnet steel 32
Long axis opposite sides, the first auxiliary magnet steel 35 are parallel to the secondary magnet steel 33.Two resilient support assemblies 23 are distinguished
Positioned at the main 32 short axle opposite sides of magnet steel, and two resilient support assemblies 23 are located at two second ontologies
3621 side far from the vibrating diaphragm 21；It is opposite that two the second auxiliary magnet steel 37 are located at 32 long axis of main magnet steel
Two sides.The structural volume that the setting can then use up the holding magnetic circuit system 3 of big degree maximizes, to keep magnetic field strength.Two
Setting in the structure of the second auxiliary magnet steel 37 and two the first auxiliary magnet steel 35 is respectively formed magnetic conductive loop, effectively mentions
The high magnetic field strength of magnetic circuit system 3, improves the Magnetic driving power and symmetry of magnetic circuit system 3, to enhance the sounding
The acoustical behavior and reliability of device 100.
It should be noted that the direction of vibration of the main magnet steel 32 and two secondary magnet steel 33 along the vibrating diaphragm 21 fills
Magnetic, and the magnetic pole of the magnetic pole and the main magnet steel 32 of each secondary magnet steel 33 is oppositely arranged；Two the second auxiliary magnet steel 37
Magnetizing direction be each perpendicular to the direction of vibration, the magnetic pole of two the second auxiliary magnet steel 37 is oppositely arranged, each described the
Two auxiliary magnet steel 37 are close to the magnetic pole of the side of the main magnet steel 32 and the main magnet steel 32 close to the second auxiliary magnet steel 37
Side magnetic pole it is different；The magnetizing direction of two the first auxiliary magnet steel 35 is each perpendicular to the direction of vibration, two institutes
The magnetic pole for stating the first auxiliary magnet steel 35 is oppositely arranged, and each first auxiliary magnet steel 35 is close to the one of the second auxiliary magnet steel 37
The magnetic pole of side is different close to the first auxiliary magnetic pole of side of magnet steel 35 with the second auxiliary magnet steel 37.
For example, on the direction of vibration, the main magnet steel 32 is close to the magnetic pole of the magnetic yoke 31 in present embodiment
The pole S, magnetic pole of the main magnet steel 32 far from the magnetic yoke 31 is the pole N, magnetic pole of each secondary magnet steel 33 close to the magnetic yoke 31
For the pole N, each magnetic pole of the secondary magnet steel 33 far from the magnetic yoke 31 is the pole S；In the horizontal direction, each second auxiliary
Magnetic pole of the magnet steel 37 close to the side of the main magnet steel 32 is the pole S, and each second auxiliary magnet steel 37 is far from the main magnet steel 32
Side magnetic pole be the pole N, it is each it is described first auxiliary magnet steel 35 close to it is described second auxiliary magnet steel 37 side the pole magnetic pole N,
The pole magnetic pole S of each side of the first auxiliary magnet steel 35 far from the second auxiliary magnet steel 37.
Compared with the relevant technologies, circlewise, i.e., microphone device of the invention designs the pole piece of the magnetic circuit system
The pole piece is equipped with the accepting hole through thereon, increases by two the first auxiliary magnet steel and is respectively accommodated in the accepting hole
And magnetic conductive loop is formed with the pole piece.Above structure makes full use of the space between the pole piece and the vibrating diaphragm, has
Effect improves the magnetic field strength of magnetic circuit system, the Magnetic driving power and symmetry of magnetic circuit system is improved, to enhance the hair
The acoustical behavior and reliability of acoustic device.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
Claims (10)
1. a kind of microphone device comprising frame and be individually fixed in the vibrational system of the frame and the magnetic with magnetic gap
Road system, the vibrational system include being fixed on the vibrating diaphragm of the frame and being fixed on the vibrating diaphragm and be inserted between the magnetic
Gap is to drive the voice coil of the diaphragm oscillations sounding；The magnetic circuit system includes the magnetic yoke for being fixed on the frame, is fixed on institute
The pair for stating the main magnet steel of magnetic yoke, being located at the main magnet steel opposite sides and forming the magnetic gap with the main magnet steel interval
Magnet steel and the pole piece close to the vibrating diaphragm side for being stacked at the main magnet steel, which is characterized in that the pole piece, which is equipped with, to be run through
Accepting hole thereon, the magnetic circuit system further include it is folded set be fixed on two of the main magnet steel and parallel interval setting it is first auxiliary
Magnetic assist steel, two the first auxiliary magnet steel are contained in the accepting hole.
2. microphone device according to claim 1, which is characterized in that two the first auxiliary magnet steel are connected to institute respectively
State pole piece.
3. microphone device according to claim 1, which is characterized in that the main magnet steel is in rectangle, and the accepting hole is in square
Shape, two the first auxiliary magnet steel extend along the long axis direction of the accepting hole respectively.
4. microphone device according to claim 1, which is characterized in that the magnetic circuit system further includes being stacked at the secondary magnetic
It the clamping plate of steel and folds set the second auxiliary magnet steel for being fixed on two secondary magnet steel respectively, the clamping plate includes being stacked at institute respectively
It states two first segments of secondary magnet steel and connects two second segments of two first segments, two second segment intervals are opposite
Setting and be collectively formed ring-type with the first segment, the first segment include be stacked at the secondary magnet steel the first noumenon and by
The first noumenon is recessed the recessing groove to be formed far from the main magnet steel side, and each second auxiliary magnet steel is respectively accommodated in
The corresponding recessing groove.
5. microphone device according to claim 4, which is characterized in that the first segment further includes by the bottom of the recessing groove
Portion is connected to the flange to the flange extended close to vibrating diaphragm direction bending, the second auxiliary magnet steel.
6. microphone device according to claim 5, which is characterized in that the second auxiliary magnet steel and the fixed company of the flange
It connects.
7. microphone device according to claim 6, which is characterized in that the second segment includes be fixed on the frame
Two ontologies and two ennations extended respectively to separate vibrating diaphragm direction bending from the opposite end of second ontology,
Two ennations are respectively connected to two the first noumenons and second ontology are made to compare the first noumenon more
Close to the vibrating diaphragm.
8. microphone device according to claim 7, which is characterized in that the vibrational system further includes being fixed on the frame
And the resilient support assemblies being connect with the voice coil far from described vibrating diaphragm one end, the resilient support assemblies and the clamping plate interval
Setting.
9. microphone device according to claim 8, which is characterized in that the main magnet steel is in rectangle, two secondary magnet steel
It is located at the main magnet steel long axis opposite sides, the first auxiliary magnet steel is parallel to the secondary magnet steel；The resilient support
Component includes two, and the resilient support assemblies, two elasticity branch are respectively arranged in the main magnet steel short axle opposite sides
Support component is located at the side far from the vibrating diaphragm of two second ontologies.
10. microphone device according to claim 9, which is characterized in that the main magnet steel and two equal edges of the secondary magnet steel
The direction of vibration of the vibrating diaphragm magnetizes, and the magnetic pole of the magnetic pole and the main magnet steel of each secondary magnet steel is oppositely arranged；Two institutes
The magnetizing direction for stating the second auxiliary magnet steel is each perpendicular to the direction of vibration, and the magnetic pole of two the second auxiliary magnet steel is reversely set
It sets, the magnetic pole and the main magnet steel of side of each second auxiliary magnet steel close to the main magnet steel are close to the second auxiliary magnetic
The magnetic pole of the side of steel is different；The magnetizing direction of two the first auxiliary magnet steel is each perpendicular to the direction of vibration, two institutes
The magnetic pole for stating the first auxiliary magnet steel is oppositely arranged, the magnetic of side of each first auxiliary magnet steel close to the second auxiliary magnet steel
Pole is different close to the first auxiliary magnetic pole of side of magnet steel with the second auxiliary magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382039.7A CN109889959B (en) | 2019-05-09 | 2019-05-09 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382039.7A CN109889959B (en) | 2019-05-09 | 2019-05-09 | Microphone device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109889959A CN109889959A (en) | 2019-06-14 |
| CN109889959B true CN109889959B (en) | 2019-07-26 |
Family
ID=66938446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910382039.7A Expired - Fee Related CN109889959B (en) | 2019-05-09 | 2019-05-09 | Microphone device |
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| Country | Link |
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| CN (1) | CN109889959B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021258354A1 (en) * | 2020-06-24 | 2021-12-30 | 瑞声声学科技(深圳)有限公司 | Loudspeaker and magnetic circuit system thereof |
| CN218976829U (en) * | 2022-10-28 | 2023-05-05 | 瑞声光电科技(常州)有限公司 | Multifunctional sounding device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345169A (en) * | 2000-09-21 | 2002-04-17 | 株式会社西铁城电子 | Multi-functional sound device |
| KR20090026399A (en) * | 2007-09-10 | 2009-03-13 | 장동우 | A dynamic type unit with attach the assistant plate to multiple magnetic field system |
| CN205017577U (en) * | 2015-10-19 | 2016-02-03 | 歌尔声学股份有限公司 | Micro loudspeaker |
| CN206894886U (en) * | 2017-04-14 | 2018-01-16 | 瑞声光电科技(常州)有限公司 | Minitype acoustic generator |
| CN208638641U (en) * | 2018-08-05 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4967892B2 (en) * | 2007-07-25 | 2012-07-04 | パナソニック株式会社 | Speaker and electronic device using it |
| CN101977342B (en) * | 2010-07-09 | 2013-09-18 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
-
2019
- 2019-05-09 CN CN201910382039.7A patent/CN109889959B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345169A (en) * | 2000-09-21 | 2002-04-17 | 株式会社西铁城电子 | Multi-functional sound device |
| KR20090026399A (en) * | 2007-09-10 | 2009-03-13 | 장동우 | A dynamic type unit with attach the assistant plate to multiple magnetic field system |
| CN205017577U (en) * | 2015-10-19 | 2016-02-03 | 歌尔声学股份有限公司 | Micro loudspeaker |
| CN206894886U (en) * | 2017-04-14 | 2018-01-16 | 瑞声光电科技(常州)有限公司 | Minitype acoustic generator |
| CN208638641U (en) * | 2018-08-05 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
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| CN109889959A (en) | 2019-06-14 |
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