CN202488688U - Micro sounder - Google Patents
Micro sounder Download PDFInfo
- Publication number
- CN202488688U CN202488688U CN2012200585647U CN201220058564U CN202488688U CN 202488688 U CN202488688 U CN 202488688U CN 2012200585647 U CN2012200585647 U CN 2012200585647U CN 201220058564 U CN201220058564 U CN 201220058564U CN 202488688 U CN202488688 U CN 202488688U
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- China
- Prior art keywords
- magnetic circuit
- voice coil
- limiting section
- acoustic generator
- external
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- Ceased
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Abstract
The utility model discloses a micro sounder. The micro sounder comprises a vibrating system, a magnetic circuit system and a shell which is used for containing and fixing the vibrating system and the magnetic circuit system, wherein the vibrating system comprises a voice coil; a magnetic gap used for containing the voice coil is formed in the magnetic circuit system, the magnetic circuit system is of a double-magnetic circuit structure and comprises an inner magnetic circuit arranged at the center and an outer magnetic circuit arranged at the edge part, and the outer magnetic circuit comprises an outer magnetic washer and an outer magnet; and the shell is provided with a limit part used for limiting the outer magnetic circuit, and the outer magnetic circuit is provided with a joint part corresponding to the limit part. The micro sounder with the structure can effectively prevent the inner magnetic circuit and the outer magnetic circuit from being attracted mutually, and product working stability is improved.
Description
Technical field
The utility model relates to the electroacoustic field, is specifically related to a kind of minitype acoustic generator that prevents the mutual adhesive of inside and outside magnetic circuit.
Background technology
Minitype acoustic generator involving vibrations of the prior art system, magnetic circuit system and accommodate the fixedly housing of vibrational system and magnetic circuit system.Vibrational system comprises voice coil loudspeaker voice coil, and magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil.In order to strengthen the magnetic flux performance of magnetic circuit system, can adopt two magnetic route structure, the magnetic circuit system magnetic flux of two magnetic route structure is big, thereby acoustical behavior is more excellent.But, for the minitype acoustic generator of two magnetic route structure, easily adhesive takes place between internal magnetic circuit and the external magnetic circuit and produces a series of bad.Therefore, be necessary the minitype acoustic generator of traditional double magnetic structure is improved, to avoid above-mentioned defective.。
The utility model content
The utility model technical problem to be solved provides a kind of minitype acoustic generator, can prevent the mutual adhesive of internal magnetic circuit and external magnetic circuit, improves the stability of product work.
To achieve these goals, the utility model provides a kind of minitype acoustic generator, a kind of minitype acoustic generator, involving vibrations system, magnetic circuit system, and the housing of accommodating fixing said vibrational system and said magnetic circuit system.
Said vibrational system comprises voice coil loudspeaker voice coil; Said magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil, and said magnetic circuit system is that two magnetic route structure comprises internal magnetic circuit that is positioned at the center and the external magnetic circuit that is positioned at marginal position, and said external magnetic circuit comprises the outer washer and the external magnet of magnetic conduction; Wherein, said housing is provided with the limiting section that limits said external magnetic circuit, and said external magnetic circuit is provided with the junction surface that corresponding said limiting section is provided with.
In addition, preferred scheme is that said limiting section is the structure of the protrusion extension along the magnetic gap edge near said magnetic gap setting.
In addition, preferred scheme is that said outer washer is provided with the junction surface that corresponding said limiting section is provided with.
In addition, preferred scheme is that the junction surface of said outer washer is along the structure of the edge protrusion extension of outer washer, is positioned at the side of said limiting section away from said magnetic gap, with the corresponding joint of said limiting section.
In addition, preferably scheme is, said internal magnetic circuit is the racetrack structure, and said external magnetic circuit is set to the strip structure along two straight line avris of said racetrack internal magnetic circuit.
After adopting technique scheme; Compare with traditional structure; The limiting section of the position of washer outside the utility model is provided with on housing and limits; Further limit the position of external magnetic circuit through the position that limits outer washer, thereby can effectively prevent the adhesive of internal magnetic circuit and external magnetic circuit, improved the stability of product work.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model minitype acoustic generator.
Fig. 2 is the three-dimensional decomposition texture sketch map of the utility model minitype acoustic generator housing and outer washer.
Fig. 3 is the utility model minitype acoustic generator housing and perspective view after outer washer combines.
Fig. 4 is the utility model minitype acoustic generator housing and perspective view after internal magnetic circuit, external magnetic circuit combine.
Embodiment
Below in conjunction with accompanying drawing the utility model is carried out detailed explanation.
Fig. 1 is the cross-sectional view of the utility model minitype acoustic generator, and is as shown in the figure, minitype acoustic generator involving vibrations system, and magnetic circuit system, and accommodate the fixedly housing 3 of vibrational system and magnetic circuit system.Vibrational system comprises vibrating diaphragm 11 and the voice coil loudspeaker voice coil 12 that is incorporated into vibrating diaphragm 11 downsides, and voice coil loudspeaker voice coil 12 drives vibrating diaphragm 11 vibrations and produces sound in the course of work.Magnetic circuit system is that two magnetic route structure comprises internal magnetic circuit that is positioned at the center and the external magnetic circuit that is positioned at the edge, forms the magnetic gap of accommodating voice coil loudspeaker voice coil 12 between internal magnetic circuit and the external magnetic circuit.Internal magnetic circuit comprises the interior washer 221 and internal magnet 222 that combines from top to bottom, and external magnetic circuit comprises the outer washer 211 and external magnet 212 that combines from top to bottom.
The magnetic line of force that internal magnetic circuit and external magnetic circuit produce passes voice coil loudspeaker voice coil 12, and internal magnetic circuit and external magnetic circuit are near the part magnetizing direction of voice coil loudspeaker voice coil 12 active force that attracts each other of generation on the contrary mutually.The active force that is attracted each other for fear of internal magnetic circuit and external magnetic circuit and adhesive; The utility model is provided with on housing 3 external magnetic circuit is carried out spacing limiting section 31; As shown in Figures 2 and 3, limiting section 31 is arranged at the position near magnetic gap, for protruding the structure of extending in the edge along magnetic gap.
The utility model internal magnetic circuit is the racetrack structure, and external magnetic circuit is arranged at two straight line avris of internal magnetic circuit, and integral body is the strip structure.The part of outer washer 211 corresponding limiting sections 31 is provided with junction surface 2111, and junction surface 2111 is positioned at the position of limiting section 31 away from magnetic gap, is the extended structure of outer ledge along outer washer 211 minor faces.Limiting section 31 and the position that can limit outer washer 211 after junction surface 2111 combines prevent that external magnetic circuit is to the direction skew near internal magnetic circuit.
In assembling process, be one with outer washer 211 secure bond at first with external magnet 212, then with outer washer 211 and housing 3 corresponding combinations,, as shown in Figure 4 in the cohesive process with limiting section 31 and junction surface 2111 corresponding engagings.The design of limiting section 31 is set on this housing 3, can further limits the position of external magnetic circuit, thereby can effectively prevent the adhesive of internal magnetic circuit and external magnetic circuit, improved the stability of product work through the position that limits outer washer 211.
In addition, the joint portion of external magnetic circuit is not limited to be arranged on the outer washer 211, also can be arranged on the external magnet 212, or be arranged at simultaneously on outer washer 211 and the external magnet 212.And, away from a side of magnetic gap the junction surface that protrusion extends is set at external magnet 212 and can prevents that magnetic circuit system from producing unnecessary leakage field.
Claims (5)
1. minitype acoustic generator, involving vibrations system, magnetic circuit system, and the housing of accommodating fixing said vibrational system and said magnetic circuit system;
Said vibrational system comprises voice coil loudspeaker voice coil; Said magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil, and said magnetic circuit system is that two magnetic route structure comprises internal magnetic circuit that is positioned at the center and the external magnetic circuit that is positioned at marginal position, and said external magnetic circuit comprises the outer washer and the external magnet of magnetic conduction; It is characterized in that,
Said housing is provided with the limiting section that limits said external magnetic circuit, and said external magnetic circuit is provided with the junction surface that corresponding said limiting section is provided with.
2. minitype acoustic generator according to claim 1 is characterized in that, said limiting section is the structure of the protrusion extension along the magnetic gap edge near said magnetic gap setting.
3. minitype acoustic generator according to claim 1 and 2 is characterized in that, said outer washer is provided with the junction surface that corresponding said limiting section is provided with.
4. minitype acoustic generator according to claim 3 is characterized in that, the junction surface of said outer washer is along the structure of the edge protrusion extension of outer washer, is positioned at the side of said limiting section away from said magnetic gap, with the corresponding joint of said limiting section.
5. minitype acoustic generator according to claim 1 is characterized in that, said internal magnetic circuit is the racetrack structure, and said external magnetic circuit is set to the strip structure along two straight line avris of said racetrack internal magnetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200585647U CN202488688U (en) | 2012-02-22 | 2012-02-22 | Micro sounder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200585647U CN202488688U (en) | 2012-02-22 | 2012-02-22 | Micro sounder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488688U true CN202488688U (en) | 2012-10-10 |
Family
ID=46963071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200585647U Ceased CN202488688U (en) | 2012-02-22 | 2012-02-22 | Micro sounder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488688U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260113A (en) * | 2013-05-03 | 2013-08-21 | 歌尔声学股份有限公司 | Sounding component |
| CN103369436A (en) * | 2013-07-24 | 2013-10-23 | 歌尔声学股份有限公司 | Magnetic circuit system for electro-acoustic transducer |
| CN103369435A (en) * | 2013-07-24 | 2013-10-23 | 歌尔声学股份有限公司 | Spliced basin stand with high magnetic conductivity |
| WO2017071009A1 (en) * | 2015-10-27 | 2017-05-04 | 歌尔声学股份有限公司 | Speaker housing and speaker unit |
| WO2018058852A1 (en) * | 2016-09-30 | 2018-04-05 | 歌尔股份有限公司 | Microacoustic device |
| 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 |
-
2012
- 2012-02-22 CN CN2012200585647U patent/CN202488688U/en not_active Ceased
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260113A (en) * | 2013-05-03 | 2013-08-21 | 歌尔声学股份有限公司 | Sounding component |
| CN103260113B (en) * | 2013-05-03 | 2016-12-28 | 歌尔股份有限公司 | Microphone device |
| CN103369436A (en) * | 2013-07-24 | 2013-10-23 | 歌尔声学股份有限公司 | Magnetic circuit system for electro-acoustic transducer |
| CN103369435A (en) * | 2013-07-24 | 2013-10-23 | 歌尔声学股份有限公司 | Spliced basin stand with high magnetic conductivity |
| CN103369436B (en) * | 2013-07-24 | 2016-09-14 | 歌尔声学股份有限公司 | The magnetic circuit system of electroacoustic transducer |
| WO2017071009A1 (en) * | 2015-10-27 | 2017-05-04 | 歌尔声学股份有限公司 | Speaker housing and speaker unit |
| US10306346B2 (en) | 2015-10-27 | 2019-05-28 | Goertek Inc. | Speaker housing and speaker unit |
| WO2018058852A1 (en) * | 2016-09-30 | 2018-04-05 | 歌尔股份有限公司 | Microacoustic device |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20140417 Decision number of declaring invalidation: 22613 Granted publication date: 20121010 |