CN109831727A - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN109831727A CN109831727A CN201811640880.3A CN201811640880A CN109831727A CN 109831727 A CN109831727 A CN 109831727A CN 201811640880 A CN201811640880 A CN 201811640880A CN 109831727 A CN109831727 A CN 109831727A
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- China
- Prior art keywords
- magnet steel
- microphone device
- magnetic
- pole
- side magnet
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention discloses a kind of microphone device comprising frame and is individually fixed in the vibrational system of the frame and the magnetic circuit system with magnetic gap；The vibrational system includes the voice coil for being fixed on the vibrating diaphragm of frame and being inserted in the magnetic gap and drive the diaphragm oscillations；The magnetic circuit system include the magnetic yoke for being connected to the frame, the main magnet steel for being fixed on the magnetic yoke, be respectively separated be set to the main magnet steel opposite sides and with the main magnet steel formed two first of the magnetic gap be stacked in magnet steel, respectively two described first while magnet steel the first pole piece, be stacked at two secondary magnet steel of two first pole pieces far from the first side magnet steel side respectively；The direction of vibration of the main magnet steel, first side magnet steel and the secondary magnet steel along the vibrating diaphragm magnetizes, and first side magnet steel and the magnetic pole same sex of the secondary magnet steel positioned at described main magnet steel the same side are oppositely arranged.Compared with the relevant technologies, microphone device acoustical behavior of the invention is good.
Description
[technical field]
The present invention relates to electroacoustic conversion art 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.Currently, the function of mobile phone is extremely various, one of them is just
It is the music function of high-quality, therefore, the microphone device for playing sound is widely applied Intelligent mobile equipment till now
Among.
The microphone device of the relevant technologies include frame and the vibrational system for being individually fixed in the frame and have magnetic
The magnetic circuit system in gap；The vibrational system includes being fixed on the vibrating diaphragm of the frame and being inserted in the magnetic gap to drive
The voice coil of the diaphragm oscillations sounding.The magnetic circuit system includes the magnetic yoke for being connected to the frame, is fixed on the magnetic yoke
Main magnet steel and secondary magnet steel, the main magnet steel and the secondary magnet steel interval are arranged and the magnetic gap are collectively formed.
However, the microphone device in the related technology, the magnetic line of force of the pair magnet steel can largely leak outside, and cause described
The driveability of magnetic circuit system cannot maximize, to limit 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]
The purpose of the present invention is overcoming above-mentioned technical problem, a kind of better microphone device of acoustical behavior is provided.
To achieve the goals above, 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 includes being fixed on the vibrating diaphragm of frame and being inserted in institute
State in magnetic gap and drive the voice coil of the diaphragm oscillations；The magnetic circuit system includes the magnetic yoke for being connected to the frame, fixation
In the magnetic yoke main magnet steel, be respectively separated and be set to the main magnet steel opposite sides and form the magnetic with the main magnet steel between
First pole piece of two first of gap magnet steel when being stacked at two described first in magnet steel, respectively is stacked at respectively described in two
Two secondary magnet steel of first pole piece far from the first side magnet steel side；The main magnet steel, first side magnet steel and the pair
Direction of vibration of the magnet steel along the vibrating diaphragm magnetizes, first side magnet steel and the secondary magnetic positioned at described main magnet steel the same side
The magnetic pole same sex of steel is oppositely arranged.
Preferably, the pole S of first side magnet steel and the pole S of the secondary magnet steel are oppositely arranged.
Preferably, the pole N of first side magnet steel and the pole N of the secondary magnet steel are oppositely arranged.
Preferably, the magnetic circuit system further includes being respectively separated two second that are set to the another opposite sides of main magnet steel
Side magnet steel.
Preferably, the magnetizing direction of the main magnet steel is identical as the secondary magnetizing direction of magnet steel.
Preferably, described second when the magnetizing direction of magnet steel is with described first the magnetizing direction of magnet steel it is identical.
Preferably, one the second pole piece of setting is folded on each second side magnet steel respectively.
Preferably, the magnetic circuit system further includes being fixed on frame clamping plate annular in shape, first pole piece and institute
The second pole piece is stated to be extended to form by the clamping plate.
Preferably, the main magnet steel is in rectangular configuration, and two first side magnet steel are located at the length of the main magnet steel
Axis two sides, two second side magnet steel are located at the short axle two sides of the main magnet steel.
Preferably, the vibrational system further includes the connection ring between the vibrating diaphragm and the voice coil, the connection
The top of ring is connect with the vibrating diaphragm, and the bottom end of the connection ring is connected to one end close to the vibrating diaphragm of the voice coil.
Preferably, first side magnet steel, first pole piece and the secondary magnet steel surround a hollow region, the company
It connects ring the voice coil is suspended in completely in the hollow region.
Compared with prior art, microphone device of the invention will increase folded on first side magnet steel of the magnetic circuit system
The secondary magnet steel being provided thereon is folded with the first pole piece, and the main magnet steel, institute between first side magnet steel and the secondary magnet steel
It states the direction of vibration of the first side magnet steel and the secondary magnet steel along the vibrating diaphragm to magnetize, described in described main magnet steel the same side
The magnetic pole same sex of first side magnet steel and the secondary magnet steel is oppositely arranged.Above structure makes the secondary magnet steel and corresponding described the
One side magnet steel is converged by the magnetic conduction effect of first pole piece, and magnetic property is more excellent, so that more magnetic lines of force and the sound
Circle effect, high degree improves the driveability of the magnetic circuit system, to effectively raise the microphone device
Acoustical behavior.
[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 decomposition diagram of microphone device of the present invention；
Fig. 3 is the motor structure schematic diagram of microphone device of the present invention；
Fig. 4 is the part-structure installation diagram of microphone device of the present invention；
Fig. 5 is the cut-away view of the line A-A along Fig. 1；
Fig. 6 is the partial structure diagram of Fig. 5.
[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
Site preparation 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.
Please refer to shown in Fig. 1-2, wherein Fig. 1 is the schematic perspective view of microphone device of the present invention；Fig. 2 is this
The part isometric structural decomposition diagram of invention microphone device.A kind of microphone device 100 provided by the invention comprising frame 1,
Vibrational system 2 and magnetic circuit system 3.
The frame 1 is used to support the vibrational system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 drives the vibration
Dynamic 2 vibration sounding of system.
Specifically, the vibrational system 2 includes the vibrating diaphragm 21 for being fixed on the frame 1, the driving vibration of vibrating diaphragm 21 hair
Voice coil 22, connection ring 23 and the resilient support assemblies 24 of sound.
The voice coil 22 can be connected directly or indirectly with the vibrating diaphragm 21, drives the vibrating diaphragm 21 to vibrate to realize
Sounding.
In present embodiment, the voice coil 22 is connected to the vibrating diaphragm 21 by the connection ring 23, that is, is indirectly connected with.Tool
Body, the connection ring 23 is between the vibrating diaphragm 21 and the voice coil 22, the top of the connection ring 23 and the vibrating diaphragm
21 connections, the bottom end of the connection ring 23 are connected to one end close to the vibrating diaphragm 21 of the voice coil 22.The connection ring 23
Setting can effectively increase the depth that the voice coil 22 is placed in the magnetic circuit system 3, pass through the ruler for changing the connection ring 23
The very little adjusting that floats up and down for realizing 22 position of voice coil.
The resilient support assemblies 24 are fixed on the frame and are connected to the voice coil 22, the preferably described resilient support
Component 24 is connected to the one end of the voice coil 22 far from the vibrating diaphragm 21.On the one hand the setting of the resilient support assemblies 24 is used for
It prevents the voice coil 22 from generating horizontal swing when the vibrations are up and down, improves the stability of the vibrational system 2, on the other hand because of its tool
Flexible performance is increased the oscillation intensity of the vibrating diaphragm 21 by the transmitting of the voice coil 22, effectively increases the hair device
100 acoustical behavior.More preferably, interval surrounds and allows bit space 25 between the resilient support assemblies 24 and the voice coil 22.
In present embodiment, the resilient support assemblies 24 include being fixed on the elastic component 241 of the frame 1 and being sticked
In the auxiliary vibrating diaphragm 242 of the elastic component 241.
Wherein, the elastic component 241 may be designed as flexible circuit board, for being electrically connected with voice coil 22.On the one hand for mentioning
For the support to the voice coil 22, external electric signal on the other hand is introduced for the voice coil 22, it is described for avoiding through lead
The problem of voice coil 22 is easy broken string when introducing external electric signal, improves its reliability.
It is please combined shown in Fig. 3-5 together, wherein Fig. 3 is the motor structure schematic diagram of microphone device of the present invention；Fig. 4
For the part-structure installation diagram of microphone device of the present invention；Fig. 5 is the cut-away view of the line A-A along Fig. 1.The magnetic circuit system 3 has
Magnetic gap 30, the voice coil 22 are inserted in the magnetic gap 30.The magnetic circuit system 3, which specifically includes, is connected to the frame 1
Magnetic yoke 31, main magnet steel 32, first in magnet steel 33, the first pole piece 34, secondary magnet steel 35, second magnet steel 36, the second pole piece 37 and
Clamping plate 38.
The magnetic yoke 31 is connected to the frame 1, and the main magnet steel 32 is fixed on the magnetic yoke 31.
First side magnet steel 33 include two and be respectively separated the opposite sides for being set to the main magnet steel 32 and with institute
It states main magnet steel 32 and forms the magnetic gap 30.
First pole piece 34 includes at least two, folds on each first side magnet steel 33 and sets first pole piece
34, it is acted on for magnetic conduction.
The pair magnet steel 35 includes at least two, and two secondary magnet steel 35 are stacked at two first pole pieces respectively
34 separate first side magnet steel, 33 side.I.e. described first pole piece 34 is located at first side magnet steel 33 and the secondary magnet steel
Between 35.
In present embodiment, the main magnet steel 32, first side magnet steel 33 and the secondary magnet steel 35 are along the vibrating diaphragm
21 direction of vibration magnetizes, positioned at first side magnet steel 33 of described main 32 the same side of magnet steel and the magnetic pole of the secondary magnet steel 35
The same sex is oppositely arranged: for example, the pole S of first side magnet steel 33 and the pole S of the secondary magnet steel 35 are oppositely arranged, alternatively, described
The pole N of first side magnet steel 33 and the pole N of the secondary magnet steel 35 are oppositely arranged.This is all feasible.
The magnetizing direction of the main magnet steel 32 can be identical as the secondary magnet steel 35, can also be with first side magnet steel, 33 phase
Together, in present embodiment, the magnetizing direction of the main magnet steel 32 is identical as the secondary magnet steel 35.
In above structure, the magnetic circuit system 3 is three magnetic steel magnetic circuit structures at this time.First side magnet steel 33 and the pair
The magnetic line of force of magnet steel 35 is converged by the magnetic conduction effect of first pole piece 34, and magnetic property is more excellent, so that more magnetic lines of force
It is acted on the voice coil 22, high degree improves the driveability of the magnetic circuit system 3, to effectively raise described
The acoustical behavior of microphone device 100.
In order to further increase the driveability of the magnetic circuit system 100, second side magnet steel 36 is respectively separated and is set
It is placed in the another opposite sides of the main magnet steel 32, to form five magnetic steel magnetic circuit structures, the magnetic gap 30 is described the at this time
Gap between gap between one side magnet steel 33 and the main magnet steel 32 and second side magnet steel 36 and the main magnet steel 32
Composition.
Described second when the magnetizing direction of magnet steel 36 can be with described first the magnetizing direction of magnet steel 33 it is identical, can also phase
Instead.In present embodiment, described second when magnet steel 36 is with described first the magnetizing direction of magnet steel 33 it is identical.
Similarly, it is acted on to increase for the magnetic line of force of second side magnet steel 36 to be more directed into the voice coil 22,
One second pole piece 37 of setting is folded on each second side magnet steel 36 respectively.
The clamping plate 38 structure annular in shape, is fixed on the frame 1.In present embodiment, 34 He of the first pole piece
Second pole piece 37 is extended to form by the clamping plate 38 namely first pole piece 34, second pole piece 37 with it is described
Clamping plate 38 is structure as a whole.
More preferably, in present embodiment, the main magnet steel 32 is in rectangular configuration, and two first side magnet steel 33 distinguish position
In the long axis two sides of the main magnet steel 32, two second side magnet steel 36 are located at the short axle two sides of the main magnet steel 32.
The structure can effectively increase the overall volume of first side magnet steel 33 and the secondary magnet steel 35, to increase the magnetic circuit system
The performance of system 3.And two resilient support assemblies 24 are located at the long axis two sides of the main magnet steel 32, with the resilient support group
Part 24 be located at described the second of the same side when magnet steel 36 is set to the resilient support assemblies 24 with described second magnet steel 36 enclose
In allowing absolutely empty 25 described in, space is efficiently used.
Incorporated by reference to shown in Fig. 6, in present embodiment, first side magnet steel 33, first pole piece 37 and with it is described
Secondary magnet steel 35 surrounds a hollow region 10, and the voice coil 22 is fully located in the hollow region 10.Specifically, the voice coil 22 is logical
It crosses the connection ring 23 to be suspended in completely in the hollow region 10, which makes the voice coil 22 that can be entirely used for cutting magnetic force
Line makes to obtain driving force maximization altogether, effectively improves the acoustical behavior of microphone device 100.
Compared with prior art, microphone device of the invention will increase folded on first side magnet steel of the magnetic circuit system
The secondary magnet steel being provided thereon is folded with the first pole piece, and the main magnet steel, institute between first side magnet steel and the secondary magnet steel
It states the direction of vibration of the first side magnet steel and the secondary magnet steel along the vibrating diaphragm to magnetize, described in described main magnet steel the same side
The magnetic pole same sex of first side magnet steel and the secondary magnet steel is oppositely arranged.Above structure makes the secondary magnet steel and corresponding described the
One side magnet steel is converged by the magnetic conduction effect of first pole piece, and magnetic property is more excellent, so that more magnetic lines of force and the sound
Circle effect, high degree improves the driveability of the magnetic circuit system, to effectively raise the microphone device
Acoustical behavior.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (11)
1. a kind of microphone device comprising frame and be individually fixed in the vibrational system of the frame and the magnetic circuit with magnetic gap
System；The vibrational system includes being fixed on the vibrating diaphragm of frame and being inserted in the magnetic gap and drive the diaphragm oscillations
Voice coil；The magnetic circuit system includes the magnetic yoke for being connected to the frame, the main magnet steel for being fixed on the magnetic yoke, is respectively separated setting
In the main magnet steel opposite sides and with the main magnet steel formed the magnetic gap two the first side magnet steel and respectively fold set
In the first pole piece of two first side magnet steel, which is characterized in that the magnetic circuit system further includes being stacked at two institutes respectively
State two secondary magnet steel of first pole piece far from the first side magnet steel side；The main magnet steel, first side magnet steel and described
Direction of vibration of the secondary magnet steel along the vibrating diaphragm magnetizes, first side magnet steel and the pair positioned at described main magnet steel the same side
The magnetic pole same sex of magnet steel is oppositely arranged.
2. microphone device according to claim 1, which is characterized in that the pole S of first side magnet steel and the secondary magnet steel
The pole S be oppositely arranged.
3. microphone device according to claim 1, which is characterized in that the pole N of first side magnet steel and the secondary magnet steel
The pole N be oppositely arranged.
4. microphone device according to claim 1, which is characterized in that the magnetizing direction of the main magnet steel and the secondary magnet steel
Magnetizing direction it is identical.
5. microphone device according to claim 1, which is characterized in that the magnetic circuit system further includes being respectively separated to be set to
Two the second side magnet steel of the another opposite sides of main magnet steel.
6. microphone device according to claim 5, which is characterized in that the magnetizing direction of second side magnet steel and described the
The magnetizing direction of one side magnet steel is identical.
7. microphone device according to claim 5, which is characterized in that fold setting one on each second side magnet steel respectively
A second pole piece.
8. microphone device according to claim 7, which is characterized in that the magnetic circuit system further includes being fixed on the frame
Clamping plate annular in shape, first pole piece and second pole piece are extended to form by the clamping plate.
9. microphone device according to claim 5, which is characterized in that the main magnet steel is in rectangular configuration, and two described
One side magnet steel is located at the long axis two sides of the main magnet steel, and two second side magnet steel are located at the short of the main magnet steel
Axis two sides.
10. microphone device according to claim 1, which is characterized in that the vibrational system further includes being located at the vibrating diaphragm
With the connection ring between the voice coil, the top of the connection ring is connect with the vibrating diaphragm, and the bottom end of the connection ring is connected to
One end close to the vibrating diaphragm of the voice coil.
11. microphone device according to claim 10, which is characterized in that first side magnet steel, first pole piece with
And the secondary magnet steel surrounds a hollow region, the voice coil is suspended in the hollow region by the connection ring completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640880.3A CN109831727A (en) | 2018-12-29 | 2018-12-29 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640880.3A CN109831727A (en) | 2018-12-29 | 2018-12-29 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109831727A true CN109831727A (en) | 2019-05-31 |
Family
ID=66860054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811640880.3A Pending CN109831727A (en) | 2018-12-29 | 2018-12-29 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109831727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110062316A (en) * | 2019-06-20 | 2019-07-26 | 瑞声光电科技(常州)有限公司 | Microphone device |
| WO2022151671A1 (en) * | 2021-01-18 | 2022-07-21 | 苏州上声电子股份有限公司 | Loudspeaker and audio system |
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| US5402503A (en) * | 1992-10-09 | 1995-03-28 | Nokia Technology Gmbh | Light-weight conical loudspeaker |
| CN205454084U (en) * | 2016-03-21 | 2016-08-10 | 深圳市奋达科技股份有限公司 | Speaker magnetic structure and speaker |
| CN205847585U (en) * | 2016-07-20 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Speaker |
| CN205847566U (en) * | 2016-07-01 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Speaker |
| CN206302566U (en) * | 2016-12-15 | 2017-07-04 | 歌尔科技有限公司 | A kind of Microspeaker |
| CN206524953U (en) * | 2017-01-20 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN206775731U (en) * | 2017-04-10 | 2017-12-19 | 歌尔科技有限公司 | A kind of loudspeaker |
| CN207083226U (en) * | 2017-08-02 | 2018-03-09 | 瑞声声学科技(常州)有限公司 | Magnetic speaker |
-
2018
- 2018-12-29 CN CN201811640880.3A patent/CN109831727A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402503A (en) * | 1992-10-09 | 1995-03-28 | Nokia Technology Gmbh | Light-weight conical loudspeaker |
| CN205454084U (en) * | 2016-03-21 | 2016-08-10 | 深圳市奋达科技股份有限公司 | Speaker magnetic structure and speaker |
| CN205847566U (en) * | 2016-07-01 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Speaker |
| CN205847585U (en) * | 2016-07-20 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Speaker |
| CN206302566U (en) * | 2016-12-15 | 2017-07-04 | 歌尔科技有限公司 | A kind of Microspeaker |
| CN206524953U (en) * | 2017-01-20 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN206775731U (en) * | 2017-04-10 | 2017-12-19 | 歌尔科技有限公司 | A kind of loudspeaker |
| CN207083226U (en) * | 2017-08-02 | 2018-03-09 | 瑞声声学科技(常州)有限公司 | Magnetic speaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110062316A (en) * | 2019-06-20 | 2019-07-26 | 瑞声光电科技(常州)有限公司 | Microphone device |
| WO2022151671A1 (en) * | 2021-01-18 | 2022-07-21 | 苏州上声电子股份有限公司 | Loudspeaker and audio system |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190531 |