CN205017577U - Micro loudspeaker - Google Patents
Micro loudspeaker Download PDFInfo
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- CN205017577U CN205017577U CN201520812643.6U CN201520812643U CN205017577U CN 205017577 U CN205017577 U CN 205017577U CN 201520812643 U CN201520812643 U CN 201520812643U CN 205017577 U CN205017577 U CN 205017577U
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Abstract
The utility model discloses a micro loudspeaker relates to electro -acoustic products technical field, which comprises an outer shell, a vibration system and a magnetic circuit system are held in the housing, magnetic circuit includes the magnetic conduction part, be fixed with first magnet and hua si on the magnetic conduction parts in proper order, the direction that magnetizes of first magnet is the vertical direction, still be equipped with annular second magnet on the first magnet, second magnet with hua sijun fixes first magnet is close to one side of vibration system on the surface, the direction that magnetizes of second magnet is the horizontal direction, just second magnet is located first magnet the edge's magnetic pole with this side magnetic pole of first magnet is the same, second magnet is located first magnet center part's magnetic pole with this side magnetic pole of first magnet is opposite. The utility model discloses micro loudspeaker's magnetic flux density is big, and the magnetic field force that the voice coil loudspeaker voice coil received is big, and sensitivity is high, and whole acoustic performance is good.
Description
Technical field
The utility model relates to electro-acoustic product technical field, particularly a kind of Microspeaker.
Background technology
Microspeaker is the important acoustic element of portable electric appts, for completing the conversion between the signal of telecommunication and voice signal, is a kind of energy conversion device.Existing Microspeaker involving vibrations system and magnetic circuit system, magnetic circuit system comprises magnet and magnetic gap, and the voice coil loudspeaker voice coil in vibrational system is positioned at magnetic gap.The magnetizing direction of the magnet of existing Microspeaker is vertical direction, namely identical with the direction of vibration of voice coil loudspeaker voice coil, the Microspeaker magnetic density of this kind of structure is little, magnetic line of force quantity through voice coil loudspeaker voice coil is few, thus the magnetic field force causing voice coil loudspeaker voice coil to be subject to is less, the sensitivity of Microspeaker is low, and overall acoustical behavior is poor.
Utility model content
For above defect, technical problem to be solved in the utility model is to provide a kind of Microspeaker, and the magnetic density of this Microspeaker is large, and highly sensitive, overall acoustical behavior is good.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of Microspeaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises magnetic conductive part, described magnetic conductive part is fixed with the first magnet and washer successively, and the magnetizing direction of described first magnet is vertical direction, described first magnet is also provided with the second magnet of annular, described second magnet and described washer are all fixed on described first magnet near the side of described vibrational system on the surface, and the magnetizing direction of described second magnet is horizontal direction; And the magnetic pole that described second magnet is positioned at described first magnet edges position is identical with this side magnetic pole of described first magnet, the magnetic pole that described second magnet is positioned at described first magnetic blow out centre position is contrary with this side magnetic pole of described first magnet.
As a kind of execution mode, described magnetic conductive part is magnetic conductive board, and described first magnet comprises the internal magnet being fixed on described magnetic conductive board centre and the external magnet being fixed on described magnetic conductive board edge; Described washer comprises the interior washer be fixed on described internal magnet and the outer washer be fixed on described external magnet; Magnetic gap is provided with between described internal magnet and described external magnet.
Wherein, described second magnet comprises the inner ring magnetic be fixed on described internal magnet, and described inner ring magnetic is fixed on the edge of described internal magnet near described magnetic gap, and described interior washer is positioned at the inner side of described inner ring magnetic.
Wherein, described second magnet comprises the outer shroud magnetic be fixed on described external magnet, and described outer shroud magnetic is fixed on the edge of described external magnet near described magnetic gap, and described outer washer is positioned at the outside of described outer shroud magnetic.
Wherein, described second magnet comprises the inner ring magnetic be fixed on described internal magnet and the outer shroud magnetic be fixed on described external magnet; Described inner ring magnetic is fixed on the edge of described internal magnet near described magnetic gap, and described interior washer is positioned at the inner side of described inner ring magnetic; Described outer shroud magnetic is fixed on the edge of described external magnet near described magnetic gap, and described outer washer is positioned at the outside of described outer shroud magnetic.
As another kind of execution mode, described magnetic conductive part is frame, and the centre of described frame is fixed with described first magnet and described washer successively, is provided with magnetic gap between described first magnet and the sidewall of described frame; Described second magnet is fixed on described first magnet near the edge of described magnetic gap, and described washer is positioned at the inner side of described second magnet.
Wherein, described magnetic circuit system is circular configuration, and described second magnet is circular annular form magnet.
Wherein, described magnetic circuit system is rectangular configuration, and described second magnet is rectangular ring magnet.
After have employed technique scheme, the beneficial effects of the utility model are:
Because the magnetic circuit system of the utility model Microspeaker comprises magnetic conductive part, magnetic conductive part is fixed with the first magnet and washer successively, the magnetizing direction of the first magnet is vertical direction, first magnet is also provided with the second magnet of annular, second magnet and washer are all fixed on the first magnet near the side of vibrational system on the surface, and the magnetizing direction of the second magnet is horizontal direction; And the magnetic pole that the second magnet is positioned at the first magnet edges position is identical with this side magnetic pole of the first magnet, the magnetic pole that the second magnet is positioned at the first magnetic blow out centre position is contrary with this side magnetic pole of the first magnet.The magnetizing direction of the second magnet and the magnetizing direction of the first magnet perpendicular, magnetic gap is passed after the magnetic field of the second magnet and the magnetic field superposition of the first magnet, increase the density of the magnetic flux in magnetic gap region greatly, add the magnetic line of force quantity through voice coil loudspeaker voice coil, as shown in Figure 3, increase the magnetic field force that voice coil loudspeaker voice coil is subject to, improve the sensitivity of Microspeaker, and then improve the overall acoustical behavior of Microspeaker.
In sum, the utility model Microspeaker solves the technical problems such as Microspeaker magnetic density in prior art is little, and the magnetic density of the utility model Microspeaker is large, and the magnetic field force that voice coil loudspeaker voice coil is subject to is large, and highly sensitive, overall acoustical behavior is good.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model Microspeaker embodiment one;
Fig. 2 is the internal structure schematic diagram-do not comprise vibrational system of the utility model Microspeaker embodiment one;
Fig. 3 is the magnetic line of force distributed simulation figure of the utility model Microspeaker;
Fig. 4 is the internal structure schematic diagram-do not comprise vibrational system of the utility model Microspeaker embodiment two;
Fig. 5 is the internal structure schematic diagram-do not comprise vibrational system of the utility model Microspeaker embodiment three;
Fig. 6 is the internal structure schematic diagram-do not comprise vibrational system of the utility model Microspeaker embodiment four;
In figure: 10, shell, 20, ball top, 22, vibrating diaphragm, 24, voice coil loudspeaker voice coil, 30, magnetic conductive board, 320, internal magnet, 322, external magnet, 340, interior washer, 342, outer washer, 360, inner ring magnetic, 362, outer shroud magnetic.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.
The side at nearly Microspeaker center is depended in the inner side related in this specification, and outside refers to the side away from Microspeaker center; The orientation related in this specification refers to the direction being provided with vibrational system, under orientation, refer to the direction being provided with magnetic circuit system.
Embodiment one:
As Fig. 1 and Fig. 2 jointly shown in, a kind of Microspeaker, comprises shell 10, contains vibrational system and magnetic circuit system in shell 10, and magnetic circuit system is circular configuration.Magnetic circuit system comprises magnetic conductive part, and in present embodiment, magnetic conductive part is magnetic conductive board 30, and magnetic conductive board 30 is fixed with the first magnet and washer successively, and the magnetizing direction of the first magnet is vertical direction.First magnet comprises the internal magnet 320 being fixed on centre on magnetic conductive board 30 and the external magnet 322 being fixed on magnetic conductive board 30 edge.Washer comprises the interior washer 340 be fixed on internal magnet 320 and the outer washer 342 be fixed on external magnet 322.Internal magnet 320 and interior washer 340 form the internal magnetic circuit of magnetic circuit system, and external magnet 322 and outer washer 342 form the external magnetic circuit of magnetic circuit system, are provided with magnetic gap between internal magnetic circuit and external magnetic circuit, and the end of the voice coil loudspeaker voice coil 24 of vibrational system is positioned at magnetic gap.
As Fig. 1 and Fig. 2 jointly shown in, first magnet is also fixed with the second magnet of circular annular form, second magnet and washer are all fixed on the first magnet near the side of vibrational system on the surface, the magnetizing direction of the second magnet is horizontal direction, namely the magnetizing direction of the second magnet and the magnetizing direction of the first magnet perpendicular.Second magnet comprises one and is fixed on inner ring magnetic 360 on internal magnet 320, also comprises one and is fixed on outer shroud magnetic 362 on external magnet 322.Inner ring magnetic 360 is fixed on the edge of internal magnet 320 near magnetic gap, and interior washer 340 is positioned at the inner side of inner ring magnetic 360.Outer shroud magnetic 362 is fixed on the edge of external magnet 322 near magnetic gap, and outer washer 342 is looped around the outside of outer shroud magnetic 362.
The magnetic pole that second magnet is positioned at the first magnet edges position is identical with this side magnetic pole of the first magnet, and the magnetic pole that the second magnet is positioned at the first magnetic blow out centre position is contrary with this side magnetic pole of the first magnet.As shown in Figure 1: the magnetic pole of internal magnet 320 is downsides is S pole, upside is N pole, then the magnetic pole in the outside (being namely positioned at the side of internal magnet 320 edge) of inner ring magnetic 360 is N pole, and the magnetic pole of inner side (being namely positioned at internal magnet 320 centre and the side be connected mutually with washer 340) is S pole.The magnetic pole of external magnet 322 is downsides is N pole, upside is S pole, then the outside of outer shroud magnetic 362 (is namely positioned at external magnet 322 central part, and the side be connected mutually with outer washer 342) magnetic pole be N pole, the magnetic pole of inner side (being namely positioned at the side of external magnet 322 edge) is S pole.Now, the magnetic field of the first magnet and the magnetic field of the second magnet can produce superposition, and are guided to magnetic gap position, as shown in Figure 3, add the magnetic density at magnetic gap place, considerably increase the magnetic line of force quantity through voice coil loudspeaker voice coil 24.
As shown in Figure 1, vibrational system comprises edge part and is fixed on vibrating diaphragm 22 on shell 10 end face, and voice coil loudspeaker voice coil 24 is fixed on the side of vibrating diaphragm 22 near magnetic circuit system, and the centre of vibrating diaphragm 22 opposite side is fixed with ball top 20.Voice coil loudspeaker voice coil 24 is subject to the effect of magnetic field force, thus do reciprocal moving up and down according to the size and Orientation by the alternating current in its coiling, vibrating diaphragm 22 and ball top 20 vibrate along with moving up and down of voice coil loudspeaker voice coil 24, instigate air sounding, thus complete the power conversion between electroacoustic.
Embodiment two:
Present embodiment is substantially identical with embodiment one, and its difference is:
As shown in Figure 4, the second magnet only comprises the outer shroud magnetic 362 be fixed on external magnet, and outer shroud magnetic 362 is fixed on the edge of external magnet near magnetic gap, and outer washer 342 is looped around the outside of outer shroud magnetic 362.
Embodiment three:
Present embodiment is substantially identical with embodiment one, and its difference is:
As shown in Figure 5, the second magnet only comprises the inner ring magnetic 360 be fixed on internal magnet, and inner ring magnetic 360 is fixed on the edge of internal magnet near magnetic gap, and interior washer 340 is positioned at the inner side of inner ring magnetic 360.
Embodiment four:
Present embodiment and embodiment one, embodiment two are all substantially identical with embodiment three, and its difference is:
As shown in Figure 6, magnetic circuit system is rectangular configuration, and the second magnet is the ringshaped magnet of rectangle.Fig. 6 illustrate only the present embodiment structure identical with embodiment three, structure those skilled in the art that present embodiment is identical with embodiment one and embodiment two can draw easily according to Fig. 2, Fig. 4 and Fig. 6, therefore draw no longer separately about the structure that present embodiment is identical with embodiment one and embodiment two, to save the length of this specification and accompanying drawing.
Embodiment five:
Present embodiment and embodiment one, embodiment two, embodiment three are all substantially identical with embodiment four, and its difference is:
Magnetic conductive part is frame, and the centre of frame is fixed with the first magnet and washer successively, the first magnet and be provided with magnetic gap between washer and the sidewall of frame.Second magnet is fixed on the edge of the first magnet near magnetic gap, and washer is positioned at the inner side of the second magnet.
The ring magnetic that the utility model magnetizes by adding level on original magnet, thus change the direction in original magnetic field, effectively add the density of magnetic gap place magnetic flux, add the magnetic line of force quantity through voice coil loudspeaker voice coil, thus improve the sensitivity of Microspeaker, improve overall acoustical behavior.
The first magnet related in this specification and the name of the second magnet are only to distinguish technical characteristic, do not represent position relationship therebetween, assemble sequence etc.
The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion made, all drop within protection range of the present utility model.
Claims (8)
1. Microspeaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises magnetic conductive part, described magnetic conductive part is fixed with the first magnet and washer successively, the magnetizing direction of described first magnet is vertical direction, it is characterized in that, described first magnet is also provided with the second magnet of annular, described second magnet and described washer are all fixed on described first magnet near the side of described vibrational system on the surface, and the magnetizing direction of described second magnet is horizontal direction; And the magnetic pole that described second magnet is positioned at described first magnet edges position is identical with this side magnetic pole of described first magnet, the magnetic pole that described second magnet is positioned at described first magnetic blow out centre position is contrary with this side magnetic pole of described first magnet.
2. Microspeaker according to claim 1, is characterized in that, described magnetic conductive part is magnetic conductive board, and described first magnet comprises the internal magnet being fixed on described magnetic conductive board centre and the external magnet being fixed on described magnetic conductive board edge; Described washer comprises the interior washer be fixed on described internal magnet and the outer washer be fixed on described external magnet; Magnetic gap is provided with between described internal magnet and described external magnet.
3. Microspeaker according to claim 2, it is characterized in that, described second magnet comprises the inner ring magnetic be fixed on described internal magnet, and described inner ring magnetic is fixed on the edge of described internal magnet near described magnetic gap, and described interior washer is positioned at the inner side of described inner ring magnetic.
4. Microspeaker according to claim 2, it is characterized in that, described second magnet comprises the outer shroud magnetic be fixed on described external magnet, and described outer shroud magnetic is fixed on the edge of described external magnet near described magnetic gap, and described outer washer is positioned at the outside of described outer shroud magnetic.
5. Microspeaker according to claim 2, is characterized in that, described second magnet comprises the inner ring magnetic be fixed on described internal magnet and the outer shroud magnetic be fixed on described external magnet; Described inner ring magnetic is fixed on the edge of described internal magnet near described magnetic gap, and described interior washer is positioned at the inner side of described inner ring magnetic; Described outer shroud magnetic is fixed on the edge of described external magnet near described magnetic gap, and described outer washer is positioned at the outside of described outer shroud magnetic.
6. Microspeaker according to claim 1, is characterized in that, described magnetic conductive part is frame, and the centre of described frame is fixed with described first magnet and described washer successively, is provided with magnetic gap between described first magnet and the sidewall of described frame; Described second magnet is fixed on described first magnet near the edge of described magnetic gap, and described washer is positioned at the inner side of described second magnet.
7. the Microspeaker according to the arbitrary claim of claim 1 to 6, is characterized in that, described magnetic circuit system is circular configuration, and described second magnet is circular annular form magnet.
8. the Microspeaker according to the arbitrary claim of claim 1 to 6, is characterized in that, described magnetic circuit system is rectangular configuration, and described second magnet is rectangular ring magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812643.6U CN205017577U (en) | 2015-10-19 | 2015-10-19 | Micro loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812643.6U CN205017577U (en) | 2015-10-19 | 2015-10-19 | Micro loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN205017577U true CN205017577U (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520812643.6U Active CN205017577U (en) | 2015-10-19 | 2015-10-19 | Micro loudspeaker |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812997A (en) * | 2016-03-14 | 2016-07-27 | 青岛海信电器股份有限公司 | Loudspeaker |
| CN106488367A (en) * | 2016-10-09 | 2017-03-08 | 深圳市得辉达智能科技有限公司 | A kind of Ultrathin speaker and its portable audio |
| CN106535070A (en) * | 2016-12-28 | 2017-03-22 | 歌尔股份有限公司 | Micro sounder |
| CN107948883A (en) * | 2018-01-08 | 2018-04-20 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN107948881A (en) * | 2018-01-08 | 2018-04-20 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN108184196A (en) * | 2018-01-08 | 2018-06-19 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN108347675A (en) * | 2018-01-08 | 2018-07-31 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN109889959A (en) * | 2019-05-09 | 2019-06-14 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110121135A (en) * | 2019-05-09 | 2019-08-13 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110149577A (en) * | 2019-05-09 | 2019-08-20 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110166902A (en) * | 2019-05-09 | 2019-08-23 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110213697A (en) * | 2019-05-09 | 2019-09-06 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110719552A (en) * | 2019-10-25 | 2020-01-21 | 海鹰企业集团有限责任公司 | Low-frequency broadband high-power electrodynamic transducer |
| WO2021012325A1 (en) * | 2019-07-19 | 2021-01-28 | 歌尔股份有限公司 | Magnetic circuit structure of transducer, transducer, and electronic device thereof |
| 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 |
| CN114866927A (en) * | 2022-04-29 | 2022-08-05 | 歌尔股份有限公司 | Sound production device and audio equipment |
| CN114866928A (en) * | 2022-04-29 | 2022-08-05 | 歌尔股份有限公司 | Sound production device and audio equipment |
| CN114915884A (en) * | 2022-04-29 | 2022-08-16 | 歌尔股份有限公司 | Sound production device and audio equipment |
| WO2023207355A1 (en) * | 2022-04-29 | 2023-11-02 | 歌尔股份有限公司 | Sound production device and audio apparatus |
-
2015
- 2015-10-19 CN CN201520812643.6U patent/CN205017577U/en active Active
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812997A (en) * | 2016-03-14 | 2016-07-27 | 青岛海信电器股份有限公司 | Loudspeaker |
| CN105812997B (en) * | 2016-03-14 | 2019-08-02 | 青岛海信电器股份有限公司 | A kind of loudspeaker |
| CN106488367A (en) * | 2016-10-09 | 2017-03-08 | 深圳市得辉达智能科技有限公司 | A kind of Ultrathin speaker and its portable audio |
| CN106488367B (en) * | 2016-10-09 | 2022-05-20 | 深圳市得辉达智能科技有限公司 | Ultra-thin loudspeaker and portable stereo set thereof |
| CN106535070A (en) * | 2016-12-28 | 2017-03-22 | 歌尔股份有限公司 | Micro sounder |
| CN107948883A (en) * | 2018-01-08 | 2018-04-20 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN107948881A (en) * | 2018-01-08 | 2018-04-20 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN108184196A (en) * | 2018-01-08 | 2018-06-19 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN108347675A (en) * | 2018-01-08 | 2018-07-31 | 深圳市韶音科技有限公司 | A kind of bone-conduction speaker |
| CN107948881B (en) * | 2018-01-08 | 2024-08-06 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN108184196B (en) * | 2018-01-08 | 2024-04-09 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN110166902A (en) * | 2019-05-09 | 2019-08-23 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110213697A (en) * | 2019-05-09 | 2019-09-06 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110166902B (en) * | 2019-05-09 | 2021-06-11 | 瑞声光电科技(常州)有限公司 | Sound production device |
| CN110149577B (en) * | 2019-05-09 | 2021-12-14 | 瑞声光电科技(常州)有限公司 | Sound production device |
| CN110149577A (en) * | 2019-05-09 | 2019-08-20 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN110121135A (en) * | 2019-05-09 | 2019-08-13 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN109889959A (en) * | 2019-05-09 | 2019-06-14 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN109889959B (en) * | 2019-05-09 | 2019-07-26 | 瑞声光电科技(常州)有限公司 | Microphone device |
| US11902764B2 (en) | 2019-07-19 | 2024-02-13 | Goertek Inc. | Magnetic circuit structure of a transducer, a transducer and an electronic device comprising the same |
| WO2021012325A1 (en) * | 2019-07-19 | 2021-01-28 | 歌尔股份有限公司 | Magnetic circuit structure of transducer, transducer, and electronic device thereof |
| CN110719552A (en) * | 2019-10-25 | 2020-01-21 | 海鹰企业集团有限责任公司 | Low-frequency broadband high-power electrodynamic transducer |
| 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 |
| WO2023207355A1 (en) * | 2022-04-29 | 2023-11-02 | 歌尔股份有限公司 | Sound production device and audio apparatus |
| CN114915884A (en) * | 2022-04-29 | 2022-08-16 | 歌尔股份有限公司 | Sound production device and audio equipment |
| CN114866928A (en) * | 2022-04-29 | 2022-08-05 | 歌尔股份有限公司 | Sound production device and audio equipment |
| CN114866927A (en) * | 2022-04-29 | 2022-08-05 | 歌尔股份有限公司 | Sound production device and audio equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |