CN103260113B - Microphone device - Google Patents
Microphone device Download PDFInfo
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- CN103260113B CN103260113B CN201310159243.5A CN201310159243A CN103260113B CN 103260113 B CN103260113 B CN 103260113B CN 201310159243 A CN201310159243 A CN 201310159243A CN 103260113 B CN103260113 B CN 103260113B
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Abstract
The invention discloses a kind of microphone device, including vibrational system and magnetic circuit system, vibrational system includes that voice coil loudspeaker voice coil, magnetic circuit system include the first Magnet and the second adjacent Magnet, forms the magnetic gap housing voice coil loudspeaker voice coil between the first Magnet and the second Magnet；First Magnet and the second Magnet are block structure, and between the first Magnet and the second Magnet, there is mutual attractive force, first Magnet and the second Magnet are combined with magnetic conduction base away from a side surface of voice coil loudspeaker voice coil, wherein, magnetic conduction base is spliced to form by multiple independent magnetic conductive boards, and magnetic conduction base includes the first magnetic conductive board being supported between the first Magnet and/or the second Magnet.This structure is possible to prevent between Magnet occur that adhesive etc. is bad, thus improves the yield rate of product, improves the acoustical behavior of product.
Description
Technical field
The present invention relates to electroacoustic field, be specifically related to a kind of microphone device.
Background technology
Microphone device includes vibrational system and magnetic circuit system, in order to meet the demands such as high-power or slimming in prior art, magnetic circuit system is generally made up of multiple Magnet, often there is the active force attracted each other between multiple Magnet, if Magnet is bonding the most easily occurs that magnet attraction etc. is bad.Microphone device in conventional art is difficult to avoid that this defect.Therefore, it is necessary to the microphone device of this structure is improved, to avoid drawbacks described above.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of microphone device, is possible to prevent adhesive between Magnet, improves the yield rate of product.
To achieve these goals, the present invention provides a kind of microphone device, and including vibrational system and magnetic circuit system, described vibrational system includes voice coil loudspeaker voice coil, described magnetic circuit system includes the first Magnet and the second adjacent Magnet, forms the magnetic gap housing described voice coil loudspeaker voice coil between described first Magnet and described second Magnet；Described first Magnet and described second Magnet are block structure, and between described first Magnet and described second Magnet, there is mutual attractive force, described first Magnet and described second Magnet are combined with magnetic conduction base away from a side surface of described voice coil loudspeaker voice coil, wherein, described magnetic conduction base is spliced to form by multiple independent magnetic conductive boards, and described magnetic conduction base includes the first magnetic conductive board being supported between described first Magnet and/or the second Magnet.
Furthermore it is preferred that scheme be that described first magnetic conductive board also incorporates the second magnetic conductive board away from the side of described voice coil loudspeaker voice coil, the thickness of described second magnetic conductive board is more than the thickness of described first magnetic conductive board.
Furthermore it is preferred that scheme be that described first Magnet is the center that internal magnet is positioned at described magnetic conduction base, described second Magnet is that to be positioned at the periphery of described internal magnet be list structure to external magnet, forms described magnetic gap between described internal magnet and described external magnet；Described first magnetic conductive board is supported between each described external magnet.
In addition, preferably scheme is, described external magnet is arranged at the both sides being parallel to described internal magnet relative edge, described first magnetic conductive board is sleeve configuration structure, two external magnets are connected on the both sides that described sleeve configuration the first magnetic conductive board is relative, and described internal magnet is incorporated into described first magnetic conductive board center near described voice coil loudspeaker voice coil side.
Furthermore it is preferred that scheme be that the width of described second magnetic conductive board is more than the width of described first magnetic conductive board, and described second magnetic conductive board is wider than the part of described first magnetic conductive board both sides and described external magnet secure bond.
Furthermore it is preferred that scheme be to be additionally provided with retaining wall on described first magnetic conductive board or described second magnetic conductive board.
After using technique scheme, compared with traditional structure, magnetic conduction base of the present invention is spliced to form by multiple independent magnetic conductive boards, each magnetic conductive board can have different effects, first magnetic conductive board therein is used for supporting Magnet, prevent between Magnet, occurring that adhesive etc. is bad, thus improve the yield rate of product, improve the acoustical behavior of product.
Accompanying drawing explanation
By present invention is described below in conjunction with the accompanying drawings, the features described above of the present invention and technological merit will become apparent with easy to understand.
Fig. 1 is the stereo decomposing structural representation of acoustic device magnetic circuit system of the present invention.
Fig. 2 is the perspective view one of acoustic device magnetic circuit system of the present invention.
Fig. 3 is the perspective view two of acoustic device magnetic circuit system of the present invention.
Fig. 4 is the A-A cross-sectional view of structure shown in Fig. 3.
Fig. 5 is the top view of magnetic conduction base of the present invention.
Fig. 6 is the B-B cross-sectional view of structure shown in Fig. 5.
Detailed description of the invention
With specific embodiment, the present invention is done further detailed description below in conjunction with the accompanying drawings.
The microphone device of moving-coil structure generally includes vibrational system, magnetic circuit system and collecting and fixes the shell of vibrational system and magnetic circuit system, vibrational system includes vibrating diaphragm and is incorporated into the voice coil loudspeaker voice coil of vibrating diaphragm side, magnetic circuit system includes Magnet and is incorporated into the Magnet magnetic conduction base away from vibrational system side, wherein magnetic circuit system forms the magnetic gap housing voice coil loudspeaker voice coil, voice coil loudspeaker voice coil connects after the signal of telecommunication up-down vibration in magnetic gap, and is further driven to diaphragm oscillations and produces sound.
As shown in Figure 1 to Figure 3, the magnetic circuit system of microphone device of the present invention includes washer 1, Magnet 2 and the magnetic conduction base 3 combined successively, magnetic circuit system is two magnetic route structure, double magnetic circuit can realize bigger output, Magnet 2 includes the internal magnet 21 being positioned at center and is positioned at two external magnets 22 of internal magnet 21 both sides, and internal magnet 21 and external magnet 22 are arranged side by side and form the magnetic loop closed is the structure attracted each other.Washer 1 includes the interior washer 11 being incorporated into internal magnet 21 surface and is incorporated into the outer washer 12 on external magnet 22 surface, and wherein interior washer 11 and outer washer 12 are the structure of magnetic conduction, may be used for adjusting the direction of the magnetic line of force that Magnet 2 is formed.Magnetic conduction base 3 is incorporated into internal magnet 21 and external magnet 22 surface away from the side of washer 1, and magnetic conduction base 3 is also magnetic conduction construction, and magnetic circuit system forms the magnetic loop of Guan Bi.
Magnetic conduction base 3 of the present invention is to be spliced to form by multiple independent magnetic conductive boards, the present embodiment includes the first independent magnetic conductive board 31 and the second magnetic conductive board 32, wherein the first magnetic conductive board 31 is the structure of sleeve configuration, distance between its width and two external magnets 22 is identical, and two external magnets 22 are connected on two relative edges of the first magnetic conductive board 31 respectively；Internal magnet 21 is incorporated into the center of the first magnetic conductive board 31.First magnetic conductive board 31 of this structure is supported between two external magnets 22, thus define the distance between two external magnets 22 and internal magnet 21, it is to avoid occur adhesive etc. bad, such that it is able to improve the yield rate of product between internal magnet 21 and external magnet 22.Second magnetic conductive board 32 is incorporated into first magnetic conductive board 31 side away from internal magnet 21, the width d2 of the second magnetic conductive board 32 is more than the width d1 of the first magnetic conductive board 31, as shown in Figure 1, thus the second magnetic conductive board 32 includes the part that is exposed to the first magnetic conductive board 31 both sides, as shown in Figures 2 to 4, part and external magnet 22 secure bond of the first magnetic conductive board 31 it are wider than.
As shown in Figure 4, the bottom surface of external magnet 22 and the second magnetic conductive board 32 secure bond, first magnetic conductive board 31 is supported in the side of two external magnets 22, thus i.e. can ensure that the firmness that external magnet 22 bonds, and external magnet 22 can be avoided again bad by internal magnet 21 attraction generation adhesive etc..The magnetic circuit system magnetic conduction base 3 of this structure is positioned at the position in internal magnet 21 corner and easily forms magnetic saturation, it is preferred that the thickness of the second magnetic conductive board 32 is more than the thickness of the first magnetic conductive board 31, and this structure can effectively alleviate magnetic saturation.As shown in Figure 4, it is additionally provided with voice coil loudspeaker voice coil 4 in the magnetic gap that internal magnet 21 and external magnet 22 are formed, voice coil loudspeaker voice coil 4 is acted on vibration in magnetic gap by Ampere force after connecting the signal of telecommunication, the magnetic circuit system of said structure will not produce impact to the distance between bottom voice coil loudspeaker voice coil 4 to magnetic gap, thus does not interferes with the oscillation space of voice coil loudspeaker voice coil 4.
As shown in Figure 3, Figure 5 and Figure 6, the present invention the first magnetic conductive board 31 or the second magnetic conductive board 32 are additionally provided with retaining wall, the present embodiment is provided with retaining wall 311 on the first magnetic conductive board 31, retaining wall 311 is set and is possible to prevent leakage field.
Additionally, this invention is not limited to this there is an internal magnet and the structure of two external magnets, it is also possible to be the structure including more internal magnet and/or external magnet.Such as, magnetic circuit system can be internal magnet be rectangle, external magnet be four pieces and around internal magnet arrange structures, the first magnetic conductive board includes that the supporting surface of rectangle abuts with four external magnets respectively.
In sum, magnetic conduction base of the present invention includes multiple independent magnetic conductive board, and each magnetic conductive board has different effects, as the present embodiment has the first magnetic conductive board and the second magnetic conductive board, first magnetic conductive board is possible to prevent magnet attraction, second magnetic conductive board has and prevents magnetically saturated effect, such that it is able to realize the function that single magnetic conductive board does not has, such that it is able to improve the acoustic characteristic of product further.
Under the above-mentioned teaching of the present invention; those skilled in the art can carry out other improvement and deformation on the basis of above-described embodiment; and these improve and deformation; all it is within the scope of the present invention; those skilled in the art should be understood that; above-mentioned specific descriptions simply preferably explain the purpose of the present invention, and protection scope of the present invention is limited by claim and equivalent thereof.
Claims (5)
1. a microphone device, including vibrational system and magnetic circuit system, described vibrational system includes voice coil loudspeaker voice coil, institute
State magnetic circuit system include the first Magnet and the second adjacent Magnet, described first Magnet and described second Magnet it
Between formed house described voice coil loudspeaker voice coil magnetic gap；
Described first Magnet and described second Magnet are block structure, and described first Magnet and described
There is mutual attractive force, described first Magnet and described second Magnet away from the one of described voice coil loudspeaker voice coil between two Magnet
Side surface is combined with magnetic conduction base, it is characterised in that
Described magnetic conduction base is spliced to form by multiple independent magnetic conductive boards, and described magnetic conduction base includes being supported in institute
State the first magnetic conductive board between the first Magnet and/or the second Magnet；
Described second Magnet is two pieces, is set in parallel in the both sides of the major axis of described first Magnet respectively；
Described first magnetic conductive board is sleeve configuration structure, the width of described first magnetic conductive board and two described second magnetic
Distance between ferrum is equal；
Described first magnetic conductive board also incorporates the second magnetic conductive board, described second magnetic conduction away from the side of described voice coil loudspeaker voice coil
The thickness of plate is more than the thickness of described first magnetic conductive board；The length of described first magnetic conductive board is led more than described second
The length of magnetic sheet.
Microphone device the most according to claim 1, it is characterised in that described first Magnet is internal magnet
Being positioned at the center of described magnetic conduction base, described second Magnet is the periphery that external magnet is positioned at described internal magnet
For list structure, between described internal magnet and described external magnet, form described magnetic gap；Described first magnetic conductive board
It is supported between each described external magnet.
Microphone device the most according to claim 1 and 2, it is characterised in that two external magnets are connected to
On the both sides that described sleeve configuration the first magnetic conductive board is relative, it is close that described internal magnet is incorporated into described first magnetic conductive board
The center of described voice coil loudspeaker voice coil side.
Microphone device the most according to claim 3, it is characterised in that the width of described second magnetic conductive board
More than the width of described first magnetic conductive board, described second magnetic conductive board is wider than the part of described first magnetic conductive board both sides
With described external magnet secure bond.
Microphone device the most according to claim 4, it is characterised in that described first magnetic conductive board or described
It is additionally provided with retaining wall on second magnetic conductive board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159243.5A CN103260113B (en) | 2013-05-03 | 2013-05-03 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159243.5A CN103260113B (en) | 2013-05-03 | 2013-05-03 | Microphone device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103260113A CN103260113A (en) | 2013-08-21 |
| CN103260113B true CN103260113B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310159243.5A Active CN103260113B (en) | 2013-05-03 | 2013-05-03 | Microphone device |
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| Country | Link |
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| CN (1) | CN103260113B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072541B (en) | 2015-07-17 | 2018-09-25 | 歌尔股份有限公司 | A kind of magnetic circuit system and loud speaker for loud speaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201893922U (en) * | 2010-11-10 | 2011-07-06 | 瑞声光电科技(常州)有限公司 | Electromagnetic loudspeaker |
| CN202127504U (en) * | 2011-06-10 | 2012-01-25 | 瑞声光电科技(常州)有限公司 | Magnetic circuit system |
| EP2475190A1 (en) * | 2009-09-04 | 2012-07-11 | BSE Co., Ltd. | Multifunctional micro-speaker |
| CN202488688U (en) * | 2012-02-22 | 2012-10-10 | 歌尔声学股份有限公司 | Micro sounder |
| CN203301725U (en) * | 2013-05-03 | 2013-11-20 | 歌尔声学股份有限公司 | Sounding device |
-
2013
- 2013-05-03 CN CN201310159243.5A patent/CN103260113B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2475190A1 (en) * | 2009-09-04 | 2012-07-11 | BSE Co., Ltd. | Multifunctional micro-speaker |
| CN201893922U (en) * | 2010-11-10 | 2011-07-06 | 瑞声光电科技(常州)有限公司 | Electromagnetic loudspeaker |
| CN202127504U (en) * | 2011-06-10 | 2012-01-25 | 瑞声光电科技(常州)有限公司 | Magnetic circuit system |
| CN202488688U (en) * | 2012-02-22 | 2012-10-10 | 歌尔声学股份有限公司 | Micro sounder |
| CN203301725U (en) * | 2013-05-03 | 2013-11-20 | 歌尔声学股份有限公司 | Sounding device |
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| Publication number | Publication date |
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| CN103260113A (en) | 2013-08-21 |
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