CN202374439U - Electroacoustic transducer - Google Patents
Electroacoustic transducer Download PDFInfo
- Publication number
- CN202374439U CN202374439U CN2011204948058U CN201120494805U CN202374439U CN 202374439 U CN202374439 U CN 202374439U CN 2011204948058 U CN2011204948058 U CN 2011204948058U CN 201120494805 U CN201120494805 U CN 201120494805U CN 202374439 U CN202374439 U CN 202374439U
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- CN
- China
- Prior art keywords
- magnetic
- yoke
- electroacoustic transducer
- conductive board
- magnetic circuit
- Prior art date
- 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 discloses an electroacoustic transducer. The electroacoustic transducer comprises a vibration system, a magnetic circuit system and a casing for accommodating and fixing the vibration system and the magnetic circuit system; the magnetic circuit system consists of a first magnetic conductive plate, a magnet and a magnet yoke which are combined in sequence, and forms a magnet gap for accommodating a voice coil; and a second magnetic conductive plate is also arranged on the lower side of the magnetic yoke and combined with the bottom of the magnetic yoke, and can cover the corner part of the combination between the magnet and the magnetic yoke which are close to one side of the magnetic gap. The electroacoustic transducer with the structure disclosed by the utility model enables the saturation magnetization of the corner part of the combination between the magnet and the magnetic yoke which are close to the one side of the magnetic gap to be improved, and magnetic flux leakage is lowered, so that the sensitivity of the electroacoustic transducer is improved.
Description
Technical field
The utility model relates to the electroacoustic field, is specifically related to a kind of electroacoustic transducer that can improve magnetic property.
Background technology
Along with the extensive use of portable consumer electronic product, also be widely applied as the electroacoustic transducer of important acoustical device.Wherein, the magnetic property of electroacoustic transducer directly influences its acoustic quality.The magnetic circuit system of electroacoustic transducer comprises upper conduction magnetic board, magnet and the yoke that combines successively; Magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil; The bight that combines in magnet and yoke near a side of magnetic gap is easy to generate magnetic saturation; Produce leakage field and make magnetic flux not allow fully to be utilized, the sensitivity of product is reduced.Therefore, be necessary the electroacoustic transducer of this structure is improved, to avoid above-mentioned defective.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of electroacoustic transducer, can improve magnetic saturation, reduce leakage field, the sensitivity that improves electroacoustic transducer.
To achieve these goals, the utility model provides a kind of electroacoustic transducer, involving vibrations system, magnetic circuit system and accommodate the shell of fixing said vibrational system and said magnetic circuit system; Said magnetic circuit system comprises first magnetic conductive board, magnet and the yoke that combines successively; Said magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil; Wherein, The downside of said yoke also is provided with second magnetic conductive board, and said second magnetic conductive board is incorporated into the bottom of said yoke, and can cover the bight part that the said magnet near magnetic gap one side combines with said yoke.
In addition, preferred scheme is that said second magnetic conductive board combines through the injection moulding mode with said yoke.
In addition, preferred scheme is that said magnetic circuit system is internal magnetic circuit structure, external magnetic circuit structure or two magnetic route structure.
In addition, preferably scheme is, the side of said second magnetic conductive board also is provided with the extension of protrusion, and said extension is arranged at the position of said second magnetic conductive board near said yoke.
In addition, preferably scheme is, the center of said second magnetic conductive board is provided with first location hole, and the position of corresponding said first location hole in said yoke bottom is provided with second location hole of same structure.
In addition, preferred scheme is that said second magnetic conductive board combines through rivet with said yoke.After adopting technique scheme; Compare with traditional structure, the utility model is provided with second magnetic conductive board in yoke bottom, makes to improve near the magnet of magnetic gap one side and the magnetic saturation of the bight part of yoke combination; Reduced leakage field, thereby the sensitivity of product is got a promotion.
Description of drawings
Through below in conjunction with accompanying drawing present embodiment being described, above-mentioned characteristic of the utility model and technological merit will become apparent and understand easily.
Fig. 1 is the perspective view of the utility model electroacoustic transducer;
Fig. 2 is the A-A cross-sectional view of electroacoustic transducer shown in Figure 1;
Fig. 3 is the cross-sectional view of the utility model electroacoustic transducer second magnetic conductive board.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further detailed description.
Like Fig. 1 to shown in Figure 3, electroacoustic transducer involving vibrations system, magnetic circuit system, and accommodate the fixedly shell 12 of vibrational system and magnetic circuit system; Protecgulum 11 lids are connected on the shell 12, with the protective device of shell 12 formation electroacoustic transducers.Vibrational system comprises vibrating diaphragm 21 and the voice coil loudspeaker voice coil 22 that is incorporated into vibrating diaphragm 21 downsides, and in the course of work, voice coil loudspeaker voice coil 22 drives vibrating diaphragm 21 vibrations and sounds.Magnetic circuit system comprises successively first magnetic conductive board 31, magnet 32 and the yoke 33 that combines, and magnetic circuit system is the internal magnetic circuit structure in the present embodiment, and yoke 33 comprises sidewall and diapire, and magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil 22.
In this implementation process, also be provided with the downside that second magnetic conductive board, 34, the second magnetic conductive boards 34 extend to yoke 33 sidewalls, cover the part in the bight that magnet 32 combines with yoke 33 at the downside of yoke 33 diapires.The diapire fluid-tight engagement of second magnetic conductive board 34 and yoke 33; Because the magnetic circuit system bottom is provided with the magnetic conductor of the bilayer that is formed by second magnetic conductive board 34 and yoke 33; The thickness of bottom magnetic conductor is increased; Thereby the magnetic saturation of the bight part that magnet 32 combines with yoke 33 is improved, reduced leakage field, the sensitivity of product is got a promotion.
In this implementation process; Second magnetic conductive board 34 is through injection moulding mode and shell 12 secure bond; In order to increase the firmness of combination; Position in the side of second magnetic conductive board 34 near yoke 33 also is provided with extension 341, and extension 341 is the structure of protrusion, prevents that second magnetic conductive board 34 from coming off from shell 12 under situation such as falling.In addition; The center position of second magnetic conductive board 34 is provided with first location hole 4; The position of the corresponding location hole 4 in yoke 33 bottoms is provided with second location hole of same structure, and first location hole 4 and second location hole are convenient to the yoke 33 and second magnetic conductive board 34 are positioned, and improves the product assembling efficiency.
The utility model second magnetic conductive board and yoke combine to be not limited to the injection moulding mode, can combine through rivet, for example, in earphone, can adopt this structure.
In addition, electroacoustic transducer second magnetic conductive board for the internal magnetic circuit structure can be annular.In the electroacoustic transducer of external magnetic circuit electroacoustic transducer and double magnetic circuit, also can combine second magnetic conductive board at the yoke downside, second magnetic conductive board need cover the bight part near the magnet of magnetic gap one side and yoke combination.These improved combinations all can reduce magnetic leakage, improve the acoustical behavior of product.
Under the above-mentioned instruction of the utility model; Those skilled in the art can be in his improvement of the basic enterprising Xingqi of the foregoing description and distortion; And these improvement and distortion all drop in the protection range of the utility model, and those skilled in the art should be understood that; Above-mentioned specific descriptions are just better explained the purpose of the utility model, and the protection range of the utility model is limited claim and equivalent thereof.
Claims (6)
1. electroacoustic transducer, involving vibrations system, magnetic circuit system and accommodate the shell of fixing said vibrational system and said magnetic circuit system; Said magnetic circuit system comprises first magnetic conductive board, magnet and the yoke that combines successively; Said magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil; It is characterized in that; The downside of said yoke also is provided with second magnetic conductive board, and said second magnetic conductive board is incorporated into the bottom of said yoke, and can cover the bight part that the said magnet near magnetic gap one side combines with said yoke.
2. electroacoustic transducer according to claim 1 is characterized in that, said second magnetic conductive board combines through the injection moulding mode with said yoke.
3. electroacoustic transducer according to claim 2 is characterized in that, said magnetic circuit system is internal magnetic circuit structure, external magnetic circuit structure or two magnetic route structure.
4. according to the described electroacoustic transducer of the arbitrary claim of claim 1 to 3, it is characterized in that the side of said second magnetic conductive board also is provided with the extension of protrusion, said extension is arranged at the position of said second magnetic conductive board near said yoke.
5. electroacoustic transducer according to claim 4 is characterized in that the center of said second magnetic conductive board is provided with first location hole, and the position of corresponding said first location hole in said yoke bottom is provided with second location hole of same structure.
6. electroacoustic transducer according to claim 1 is characterized in that, said second magnetic conductive board combines through rivet with said yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204948058U CN202374439U (en) | 2011-12-02 | 2011-12-02 | Electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204948058U CN202374439U (en) | 2011-12-02 | 2011-12-02 | Electroacoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374439U true CN202374439U (en) | 2012-08-08 |
Family
ID=46598126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204948058U Expired - Fee Related CN202374439U (en) | 2011-12-02 | 2011-12-02 | Electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202374439U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106331961A (en) * | 2016-09-30 | 2017-01-11 | 歌尔股份有限公司 | Micro acoustic generator |
| CN110536224A (en) * | 2019-07-12 | 2019-12-03 | 国光电器股份有限公司 | The assemble method of magnetic circuit structure for loudspeaker |
| CN114367431A (en) * | 2022-01-10 | 2022-04-19 | 京东方科技集团股份有限公司 | Transducer and preparation method thereof |
| WO2024021386A1 (en) * | 2022-07-25 | 2024-02-01 | 深圳市韶音科技有限公司 | Transducer device, loudspeaker and acoustic output device |
-
2011
- 2011-12-02 CN CN2011204948058U patent/CN202374439U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103369435B (en) * | 2013-07-24 | 2016-09-14 | 歌尔声学股份有限公司 | High magnetic conduction splicing frame |
| CN106331961A (en) * | 2016-09-30 | 2017-01-11 | 歌尔股份有限公司 | Micro acoustic generator |
| WO2018058852A1 (en) * | 2016-09-30 | 2018-04-05 | 歌尔股份有限公司 | Microacoustic device |
| CN110536224A (en) * | 2019-07-12 | 2019-12-03 | 国光电器股份有限公司 | The assemble method of magnetic circuit structure for loudspeaker |
| CN114367431A (en) * | 2022-01-10 | 2022-04-19 | 京东方科技集团股份有限公司 | Transducer and preparation method thereof |
| WO2024021386A1 (en) * | 2022-07-25 | 2024-02-01 | 深圳市韶音科技有限公司 | Transducer device, loudspeaker and acoustic output device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20191202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |