CN202818587U - Micro loudspeaker - Google Patents
Micro loudspeaker Download PDFInfo
- Publication number
- CN202818587U CN202818587U CN 201220429819 CN201220429819U CN202818587U CN 202818587 U CN202818587 U CN 202818587U CN 201220429819 CN201220429819 CN 201220429819 CN 201220429819 U CN201220429819 U CN 201220429819U CN 202818587 U CN202818587 U CN 202818587U
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- China
- Prior art keywords
- magnet portion
- yoke
- packing ring
- groove
- vibrating diaphragm
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a micro loudspeaker. The micro loudspeaker comprises a vibration system and a magnetic circuit system, the vibration system comprises a diaphragm and a voice coil for driving the diaphragm to vibrate and sound, the magnetic circuit system comprises a magnetic yoke, a first magnet part and a second magnet part, the projection of the diaphragm on the magnetic yoke is arranged in the contour range of the magnetic yoke, the magnetic yoke comprises an upper surface and a lower surface opposite to the upper surface, the second magnet part is alternatively arranged on the periphery of the first magnet part, a clearance between the first magnet part and the second magnet part is a magnetic clearance, the magnetic yoke is provided with a through groove for perforating through the upper, lower surfaces of the magnetic yoke and communicating the magnetic clearances, and the through groove is communicated with the outside environment to leak the gas in the magnetic clearance. The micro loudspeaker is not provided with the shell, and the groove for communicating the magnetic clearance with the outer environment is arranged on the magnetic yoke, thus the cost for manufacturing the shell is saved, the vibration system and the magnetic circuit system are maximized, and the acoustic performance of the micro loudspeaker is effectively improved.
Description
[technical field]
The utility model relates to a kind of electroacoustic transducer, relates in particular to the Microspeaker that in a kind of electroacoustic transducer the signal of telecommunication is converted into voice signal.
[background technology]
Along with the fast development of wireless telecommunications, Global Mobile Phone is more and more, and people are not limited only to basic conversation to the requirement of mobile phone, more requires the face shaping of traditional mobile phone is proposed more requirements.Especially the arrival in 3G epoch, Technology of Mobile Multimedia be thereupon development also, and a lot of mobile phones have multiple amusement function, and such as video playback, digital vedio recording, game, GPS navigation etc., this requires mobile phone screen increasing, so that better visual experience.
The Microspeaker of tradition mobile phone all is that magnetic circuit system and vibrational system are housed in the shell, in the situation that shell sizes is fixed, be difficult to do magnetic circuit system and vibrational system larger again, this must cause the performance of loud speaker to be difficult to further lifting, equally, also be difficult to speaker size is done less when satisfying speaker performance, make the microminiaturization development of loud speaker be subject to great resistance.
Therefore, be necessary to provide a kind of new Microspeaker for above-mentioned shortcoming.
[utility model content]
The purpose of this utility model is to provide a kind of new micro loud speaker, and this Microspeaker performance is better, and size is less.
A kind of Microspeaker, involving vibrations system and be positioned at described vibrational system below and be used for driving the magnetic circuit system of described vibrational system vibration sounding, described vibrational system comprises vibrating diaphragm and drives the voice coil loudspeaker voice coil of vibrating diaphragm vibration sounding, described magnetic circuit system comprises yoke, at least one is the first magnet portion and second magnet portion of permanent magnet in described yoke and between the two in assembly, described vibrating diaphragm is positioned at the profile scope of described yoke to the projection of yoke, described yoke comprises the upper surface and the lower surface relative with upper surface for assembly the first magnet portion and the second magnet portion, described the second magnet portion is arranged at intervals at all sides of described the first magnet portion, gap between described the first magnet portion and the second magnet portion is magnetic gap, described yoke is provided with at least one groove that connects described yoke upper and lower surface and be communicated with magnetic gap, and described groove and external environment connect are used for the air in the magnetic leakage gap.
Preferably, described the first magnet portion and described the second magnet portion all are permanent magnet, described magnetic circuit system also comprises the first pole piece and the second pole piece that is attached at respectively described the first magnet portion and described the second magnet portion surface, described the second pole piece is provided with packing ring, the periphery of described vibrating diaphragm is fixed in described packing ring, and described vibrating diaphragm, packing ring and the second pole piece three are cascading.
Preferably, described the first magnet portion and described yoke are wholely set, described the second magnet portion is permanent magnet, described magnetic circuit system also comprises the second pole piece that is attached at described the second magnet portion surface, described the second pole piece is provided with packing ring, the periphery of described vibrating diaphragm is fixed in described packing ring, and described vibrating diaphragm, packing ring and the second pole piece three are cascading.
Preferably, described packing ring and described the second pole piece are wholely set.
Preferably, described the first magnet portion is permanent magnet, described the second magnet portion and described yoke are wholely set, described magnetic circuit system also comprises the first pole piece that is attached at described the first magnet portion surface, described the second magnet portion is provided with packing ring, the periphery of described vibrating diaphragm is fixed in described packing ring, and described vibrating diaphragm, packing ring and the second magnet portion three are cascading.
Preferably, described voice coil loudspeaker voice coil is provided with voice coil leads, and described packing ring is provided with the through hole of accommodating described voice coil leads, and voice coil leads is passed this through hole and is electrically connected with extraneous.
Preferably, described the second magnet portion is the ring-type of sealing.
Preferably, described yoke is provided with the groove to the upper surface depression from the lower surface of yoke, and described groove is communicated with groove, and described groove is in communication with the outside by described groove.
Preferably, the quantity of described groove is four, and groove is symmetrical arranged about the axis of yoke.
Preferably, described Microspeaker also comprises a protecgulum, and described protecgulum lid is connected to the periphery of described vibrating diaphragm.
The beneficial effects of the utility model are: the Microspeaker that the utility model provides does not arrange shell, and in yoke groove with magnetic gap and external environment connect is set, not only saved the cost of making shell, make simultaneously vibrational system and magnetic circuit system the maximization, Effective Raise the acoustical behavior of Microspeaker.
[description of drawings]
Fig. 1 is the exploded view of the utility model Microspeaker the first execution mode;
Fig. 2 is the cutaway view of Microspeaker shown in Figure 1;
Fig. 3 is the stereogram of Microspeaker shown in Figure 1;
Fig. 4 is the stereogram of the second structure of the yoke of the utility model Microspeaker;
Fig. 5 is the cutaway view along A-A line among Fig. 4;
Fig. 6 is the exploded view of the utility model Microspeaker the second execution mode;
Fig. 7 is the exploded view of the utility model Microspeaker the 3rd execution mode.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, the utility model provides a kind of Microspeaker 100, involving vibrations system 1 and be positioned at described vibrational system 1 below and be used for driving the magnetic circuit system 2 of described vibrational system 1 vibration sounding and the protecgulum 3 that lid is connected to the periphery of described vibrating diaphragm 10.Wherein, described vibrational system 1 comprises vibrating diaphragm 10 and be used for to drive the voice coil loudspeaker voice coil 11 of vibrating diaphragm 10 vibration soundings.Described magnetic circuit system 2 comprises that at least one is the first magnet portion 21 of permanent magnet and the second magnet portion 22 in described yoke 20 and between the two for yoke 20, assembly.Described vibrating diaphragm 10 is positioned at the profile scope of yoke 20 to the projection of yoke 20.
Such as Fig. 2 ~ shown in Figure 4, described the second magnet portion 22 is arranged at intervals at described the first magnet portion 21 all sides, and the gap between described the first magnet portion 21 and the second magnet portion 22 is magnetic gap 25.
Described yoke 20 comprises for the upper surface 201 of assembly the first magnet portion 21 and the second magnet portion 22 and the lower surface 202 relative with upper surface 201, described yoke 20 is provided with at least one groove 26 that connects described yoke 20 upper and lower surfaces and be communicated with magnetic gap 25, and described groove 26 and external environment connect are used for the air in the magnetic leakage gap 25.
Described voice coil loudspeaker voice coil 11 1 ends are suspended in described magnetic gap 25, and described voice coil loudspeaker voice coil 11 is provided with voice coil leads 110, described packing ring 27 is provided with the through hole 270 of accommodating described voice coil leads 110, and voice coil leads 110 is passed this through hole 270 and is electrically connected with extraneous, as shown in figures 1 and 3.
As depicted in figs. 1 and 2, as a preferred implementation of the present utility model, described the first magnet portion 21 all is permanent magnet with described the second magnet portion 22.Described magnetic circuit system 2 also comprises the first pole piece 23 and the second pole piece 24 that is attached at respectively described the first magnet portion 21 and described the second magnet portion 22 surfaces.Described the second pole piece 24 is provided with packing ring 27, and the periphery of described vibrating diaphragm 10 is fixed in described packing ring 27, and described vibrating diaphragm 10, packing ring 27 and the second pole piece 24 threes are cascading.Preferably, in protection range of the present utility model, described packing ring 27 can be wholely set with described the second pole piece 24.
As shown in Figure 6, as the second preferred implementation of the present utility model, described the first magnet portion 21 is wholely set with described yoke 20, and described the second magnet portion 22 is permanent magnet.Described magnetic circuit system 2 also comprises the second pole piece 24 that is attached at described the second magnet portion 22 surfaces.Described the second pole piece 24 is provided with packing ring 27, and the periphery of described vibrating diaphragm 10 is fixed in described packing ring 27, and described vibrating diaphragm 10, packing ring 27 and the second pole piece 24 threes are cascading.Preferably, in protection range of the present utility model, described packing ring 27 can be wholely set with described the second pole piece 24.
As shown in Figure 7, as a preferred implementation of the present utility model, described the first magnet portion 21 is permanent magnet, and described the second magnet portion 22 is wholely set with described yoke 20.Described magnetic circuit system 2 also comprises the first pole piece 23 that is attached at described the first magnet portion 21 surfaces, described the second magnet portion 22 is provided with packing ring 27, the periphery of described vibrating diaphragm 10 is fixed in described packing ring 27, and described vibrating diaphragm 10, packing ring 27 and the second magnet portion 24 threes are cascading.Packing ring 27 is directly fixed on described the second magnet portion 22, not only is confined to this, and described packing ring 27 also can be wholely set with described the second magnet portion 22.
As shown in Figure 4 and Figure 5, described yoke 20 is provided with the groove 203 to upper surface 201 depressions from the lower surface 202 of yoke, and described groove 203 is communicated with groove 26, and described groove 26 is in communication with the outside by described groove 203.
In the utility model, the quantity of groove 26 at least one, but preferred embodiment, the quantity of described groove 26 is four, and groove 26 is symmetrical arranged about the axis of yoke 20.In the utility model, described axis refers to pass long axis and the minor axis of the central point of described yoke.
In the utility model, so-called magnetic circuit system refers to produce magnetic field, and the magnetic field that produces can be subject to the combination of each element of the impact of each element in the system.
And yoke not only is confined to tabular, in fact, and in the utility model, because the first magnet portion and the second magnet portion have at least between the two one to be permanent magnet, like this, when the first magnet portion and the second magnet portion all were permanent magnet, the shape of yoke is as shown in Figure 1 tabular just; When the first magnet portion and yoke are integrated setting, when the second magnet portion was permanent magnet, described yoke was T-shaped; When the first magnet portion is permanent magnet, the second magnet portion and yoke are integrated when arranging, and described yoke is bowl-shape.
Such as Fig. 1, Fig. 2 and shown in Figure 3, the Microspeaker that the utility model provides does not arrange shell, and arrange the groove 26 of magnetic gap 25 with external environment connect in yoke 20, not only saved the cost of making shell, make simultaneously 2 maximizations of vibrational system 1 and magnetic circuit system, Effective Raise the acoustical behavior of Microspeaker 100.
Above-described only is preferred embodiments of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (10)
1. Microspeaker, it is characterized in that, involving vibrations system and be positioned at described vibrational system below and be used for driving the magnetic circuit system of described vibrational system vibration sounding, described vibrational system comprises vibrating diaphragm and drives the voice coil loudspeaker voice coil of vibrating diaphragm vibration sounding, described magnetic circuit system comprises yoke, at least one is the first magnet portion and second magnet portion of permanent magnet in described yoke and between the two in assembly, described vibrating diaphragm is positioned at the profile scope of described yoke to the projection of yoke, described yoke comprises the upper surface and the lower surface relative with upper surface for assembly the first magnet portion and the second magnet portion, described the second magnet portion is arranged at intervals at all sides of described the first magnet portion, gap between described the first magnet portion and the second magnet portion is magnetic gap, described yoke is provided with at least one groove that connects described yoke upper and lower surface and be communicated with magnetic gap, and described groove and external environment connect are used for the air in the magnetic leakage gap.
2. Microspeaker according to claim 1, it is characterized in that: described the first magnet portion and described the second magnet portion all are permanent magnet, described magnetic circuit system also comprises the first pole piece and the second pole piece that is attached at respectively described the first magnet portion and described the second magnet portion surface, described the second pole piece is provided with packing ring, the periphery of described vibrating diaphragm is fixed in described packing ring, and described vibrating diaphragm, packing ring and the second pole piece three are cascading.
3. Microspeaker according to claim 1, it is characterized in that: described the first magnet portion and described yoke are wholely set, described the second magnet portion is permanent magnet, described magnetic circuit system also comprises the second pole piece that is attached at described the second magnet portion surface, described the second pole piece is provided with packing ring, the periphery of described vibrating diaphragm is fixed in described packing ring, and described vibrating diaphragm, packing ring and the second pole piece three are cascading.
4. according to claim 2 or 3 described Microspeakers, it is characterized in that: described packing ring and described the second pole piece are wholely set.
5. Microspeaker according to claim 1, it is characterized in that: described the first magnet portion is permanent magnet, described the second magnet portion and described yoke are wholely set, described magnetic circuit system also comprises the first pole piece that is attached at described the first magnet portion surface, described the second magnet portion is provided with packing ring, the periphery of described vibrating diaphragm is fixed in described packing ring, and described vibrating diaphragm, packing ring and the second magnet portion three are cascading.
6. according to claim 2, the described Microspeaker of 3 or 5 any one, it is characterized in that: described voice coil loudspeaker voice coil is provided with voice coil leads, described packing ring is provided with the through hole of accommodating described voice coil leads, voice coil leads is passed this through hole and is electrically connected with extraneous.
7. Microspeaker according to claim 6, it is characterized in that: described the second magnet portion is the ring-type of sealing.
8. Microspeaker according to claim 1 is characterized in that: described yoke is provided with the groove to the upper surface depression from the lower surface of yoke, and described groove is communicated with groove, and described groove is in communication with the outside by described groove.
9. according to claim 1 or 8 described Microspeakers, it is characterized in that: the quantity of described groove is four, and groove is symmetrical arranged about the axis of yoke.
10. Microspeaker according to claim 1, it is characterized in that: described Microspeaker also comprises a protecgulum, described protecgulum lid is connected to the periphery of described vibrating diaphragm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429819 CN202818587U (en) | 2012-08-27 | 2012-08-27 | Micro loudspeaker |
| US14/010,652 US20140056445A1 (en) | 2012-08-27 | 2013-08-27 | Micro-electroacoustic Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429819 CN202818587U (en) | 2012-08-27 | 2012-08-27 | Micro loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818587U true CN202818587U (en) | 2013-03-20 |
Family
ID=47877387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429819 Expired - Fee Related CN202818587U (en) | 2012-08-27 | 2012-08-27 | Micro loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818587U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547899A (en) * | 2018-06-05 | 2019-03-29 | 安重焕 | A kind of external magnetic type earphone speaker |
| CN110235452A (en) * | 2017-02-06 | 2019-09-13 | 索尼公司 | Speaker diaphragm and speaker unit |
| WO2019205657A1 (en) * | 2018-04-27 | 2019-10-31 | 歌尔股份有限公司 | Sound producing unit, sound producing module, and electronic terminal |
| WO2020258261A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2021000157A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
-
2012
- 2012-08-27 CN CN 201220429819 patent/CN202818587U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110235452A (en) * | 2017-02-06 | 2019-09-13 | 索尼公司 | Speaker diaphragm and speaker unit |
| CN110235452B (en) * | 2017-02-06 | 2021-12-24 | 索尼公司 | Speaker diaphragm and speaker device |
| US11350216B2 (en) | 2017-02-06 | 2022-05-31 | Sony Corporation | Speaker diaphragm and speaker apparatus |
| WO2019205657A1 (en) * | 2018-04-27 | 2019-10-31 | 歌尔股份有限公司 | Sound producing unit, sound producing module, and electronic terminal |
| CN109547899A (en) * | 2018-06-05 | 2019-03-29 | 安重焕 | A kind of external magnetic type earphone speaker |
| WO2020258261A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2021000157A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20210827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |