CN101977342B - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
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- CN101977342B CN101977342B CN 201010224353 CN201010224353A CN101977342B CN 101977342 B CN101977342 B CN 101977342B CN 201010224353 CN201010224353 CN 201010224353 CN 201010224353 A CN201010224353 A CN 201010224353A CN 101977342 B CN101977342 B CN 101977342B
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Abstract
The invention provides a loudspeaker, which is characterized in that a magnetic circuit system arranged in the loudspeaker comprises a magnetic bowl, a first magnetic body and a second magnetic body; the first and the second magnetic bodies are fixed at the bottom of the magnetic bowl in parallel; two magnetic bodies are in a slant magnetizing mode; and a magnetic pole core with magnetic conduction action in the prior art can be omitted because magnetic lines of force with perpendicular voice coils can be obtained through the two magnetic bodies are in the slant magnetizing mode. The invention has the advantages that the height of the magnetic circuit system can be reduced; the size of the product can be reduced to promote the product to be developed towards miniaturization and thinning; and the production cost can be reduced.
Description
[technical field]
The present invention relates to a kind of loud speaker, relate in particular to a kind of magnetic circuit system of loud speaker.
[background technology]
In recent years along with the fast development of mobile communication technology, the consumer uses the mobile communication equipment that has phonetic function more and more, for example portable phone, handheld device, laptop computer, laptop computer, multimedia player and can be by other equipment public or that dedicated communications network communicates.People not only are concerned about its voice quality, more require its small volume and less weight, be easy to carry about with one, and as the loud speaker of speech transmission device, its size design directly can influence profile and the size of communication apparatus.
At present, loud speaker comprises magnetic circuit system and vibrational system, magnetic circuit system generally includes the magnetic bowl that is provided with diapire, be contained in the magnet steel in the magnetic bowl and be covered in magnetic pole core on the magnet steel, forms magnetic gap between magnet steel and the magnetic bowl, and vibrational system is provided with the voice coil loudspeaker voice coil that is suspended from the magnetic gap.Wherein, magnet steel is provided with two magnetic poles that magnetic polarity is opposite, and the line of two magnetic poles is vertical with magnetic bowl diapire, i.e. the vertical magnetic bowl bottom of the magnetizing direction of magnet steel.Magnetic pole core plays the effect of magnetic conduction, is used for the vertical voice coil loudspeaker voice coil of the magnetic line of force in the guiding magnetic gap.But the magnetic pole core of setting up has certain thickness, causes increasing the height of magnetic circuit system, and then hinders loud speaker and develop to the direction of microminiaturized and slimming.
Therefore, be necessary to provide a kind of new loud speaker to remedy above-mentioned defective.
[summary of the invention]
The technical problem that the present invention need solve provides a kind of loud speaker that reduces height, is conducive to miniaturization of products development.
According to the above-mentioned technical problem that needs solution, designed a kind of loud speaker, a kind of loud speaker, it comprises magnetic circuit system, described magnetic circuit system comprises the magnetic bowl and is fixed in first magnet and second magnet of magnetic bowl bottom side by side, form the gap between described first magnet and second magnet, described first magnet is provided with first magnetic pole near the bottom of magnetic bowl bottom, be provided with second magnetic pole opposite with first magnetic pole with the top away from the magnetic bowl bottom, the bottom of the close magnetic bowl bottom of described second magnet is provided with the 3rd magnetic pole with the first magnetic pole homopolarity, be provided with the 4th magnetic pole with the second magnetic pole homopolarity with top away from the magnetic bowl bottom, the position of the position of described first magnetic pole and the 3rd magnetic pole is with respect to described gap symmetry, relative described gap with the position of the 4th magnetic pole, the position of second magnetic pole symmetry, the distance between first magnetic pole and the 3rd magnetic pole is less than the distance between second magnetic pole and the 4th magnetic pole.
As a kind of improvement of the present invention, described first magnet is the identical cuboid of shape with second magnet, and described gap is by forming between the long limit of first magnet that is parallel to each other and the long limit of second magnet.
As a kind of improvement of the present invention, described first magnetic pole and the 3rd magnetic pole lay respectively at the bottom of first magnet and second magnet near the side in described gap, and described second magnetic pole and the 4th magnetic pole lay respectively at the top of first magnet and second magnet away from the side in described gap.
As a kind of improvement of the present invention, described first magnetic pole is 45 ° to the direction of second magnetic pole with the angle of the horizontal direction of parallel magnetic bowl bottom.
As a kind of improvement of the present invention, the direction of described first magnetic pole and second magnetic pole is 30 ° with the angle of the horizontal direction of parallel magnetic bowl bottom.
The present invention has the following advantages: because two magnets of the present invention are the oblique magnet that magnetizes, can obtain the magnetic line of force of vertical voice coil loudspeaker voice coil, can save the magnetic pole core that plays the magnetic conduction effect that exists in the prior art, thereby the height of magnetic circuit system of the present invention can reduce, the size of product also diminishes thereupon, thereby promotes product to develop towards the direction of microminiaturization and slimming.In addition, can also reduce production costs.
[description of drawings]
Fig. 1 is the structural representation of loud speaker of the present invention.
Fig. 2 is the schematic diagram of the magnetic circuit system of loud speaker of the present invention.
[embodiment]
The invention will be further described below in conjunction with drawings and embodiments.
As shown in Figure 1, one embodiment of the invention loud speaker 1 comprises basin frame 10, is contained in magnetic circuit system, the vibrational system in the basin frame 10 and the loam cake 19 that links to each other with basin frame 10.Magnetic circuit system comprises magnetic bowl 11, is fixed in first magnet 12 and second magnet 13 of magnetic bowl bottom 110 side by side, and vibrational system comprises voice coil loudspeaker voice coil 14 and the vibrating diaphragm 15 that links to each other with voice coil loudspeaker voice coil 14.Wherein, be formed with magnetic gap 102 between first magnet 12 and second magnet 13 and magnetic bowl 11 sidewalls 111, voice coil loudspeaker voice coil 14 is suspended in the magnetic gap 102, and the edge of vibrating diaphragm 15 is connected with loam cake 19.
First magnet 12 of the present invention is identical with the shape of second magnet 13, is rectangular shape, and the long limit of two magnets is parallel to each other, and one gap 101, interval, two long limits.As shown in Figure 2, first magnet 12 is provided with first magnetic pole and is provided with second magnetic pole opposite with first magnetic pole away from the top 121 of magnetic bowl bottom near the bottom 120 of magnetic bowl bottoms 110.Second magnet 13 is provided with the 3rd magnetic pole of the first magnetic pole homopolarity with away from the top 131 of magnetic bowl bottom near the bottom 130 of magnetic bowl bottoms 110 and is provided with the 4th magnetic pole with the second magnetic pole homopolarity, in the present embodiment, first magnetic pole of first magnet 12 is that the N utmost point, second magnetic pole are the S utmost point; The 3rd magnetic pole of second magnet 13 is the N utmost point, and the 4th magnetic pole is the S utmost point.Certainly, above-mentioned its N utmost point of magnet and the S utmost point also can be configured to all opposite.
The position of the position of the first magnet 12N utmost point and the second magnet 13N utmost point is symmetry with respect to gap 101, the position of the position of the first magnet 12S utmost point and the second magnet 13S utmost point is symmetry with respect to first magnetic gap 101, distance between the 3rd magnetic pole N utmost point of the first magnetic pole N utmost point of first magnet 12 and second magnet 13 is less than the distance between the 4th magnetic pole S utmost point of the second magnetic pole S utmost point of first magnet 12 and first magnet 12, that is, first magnet magnetic line of force direction interior and that second magnet is interior is skewed with respect to the magnetic bowl bottom.And the first magnets N utmost point is positioned at first magnet, 12 bottoms 120 near the side in gap 101, and the S utmost point of first magnet is positioned at first magnet, 12 tops 121 away from the side in gap 101; The N utmost point of second magnet 13 is positioned at second magnet, 13 bottoms 130 near the side in gap 101, and the S utmost point of second magnet is positioned at second magnet, 13 tops 131 away from the side in gap 101.
The magnetic pole of first magnet and second magnet so designs, namely when giving the magnetizing of first magnet and second magnet, magnetizing direction is not perpendicular to the surface of magnet, but oblique magnetizing, obtaining the magnet N utmost point acutangulates with respect to the horizontal direction X-axis to the magnetic direction of the S utmost point, the horizontal direction X-axis is the plane of parallel magnetic bowl bottom, and oblique magnetizing can make by the magnetic line of force in the magnetic gap perpendicular to voice coil loudspeaker voice coil, and need not establish the pole piece that magnetic conduction is used in addition.Therefore, the height of magnetic circuit system of the present invention can reduce, and the size of product also diminishes thereupon, thereby promotes product to develop towards the direction of microminiaturization and slimming.In addition, can also reduce production costs.
In other embodiment of invention, first magnetic pole of first magnet and second magnet can be 45 ° to the direction of second magnetic pole and the angle of horizontal direction X-axis, namely the magnetizing direction that magnet is magnetized is from the horizontal by 45 °, and magnetizing direction also can be 30 ° or other angles certainly.
Above-described only is embodiments of the present invention, 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 invention design, can also make improvement, but these all belongs to protection scope of the present invention.
Claims (5)
1. loud speaker, it comprises magnetic circuit system, described magnetic circuit system comprises the magnetic bowl and is fixed in first magnet and second magnet of magnetic bowl bottom side by side, form the gap between described first magnet and second magnet, described first magnet is provided with first magnetic pole near the bottom of magnetic bowl bottom, be provided with second magnetic pole opposite with first magnetic pole with the top away from the magnetic bowl bottom, the bottom of the close magnetic bowl bottom of described second magnet is provided with the 3rd magnetic pole with the first magnetic pole homopolarity, be provided with the 4th magnetic pole with the second magnetic pole homopolarity with top away from the magnetic bowl bottom, it is characterized in that: the position of the position of described first magnetic pole and the 3rd magnetic pole is with respect to described gap symmetry, relative described gap with the position of the 4th magnetic pole, the position of second magnetic pole symmetry, distance between first magnetic pole and the 3rd magnetic pole is less than the distance between second magnetic pole and the 4th magnetic pole, and first magnet magnetic line of force direction interior and that second magnet is interior is skewed with respect to the magnetic bowl bottom.
2. loud speaker according to claim 1, it is characterized in that: described first magnet is the identical cuboid of shape with second magnet, described gap is by forming between the long limit of first magnet that is parallel to each other and the long limit of second magnet.
3. loud speaker according to claim 1, it is characterized in that: described first magnetic pole and the 3rd magnetic pole lay respectively at the bottom of first magnet and second magnet near the side in described gap, and described second magnetic pole and the 4th magnetic pole lay respectively at the top of first magnet and second magnet away from the side in described gap.
4. loud speaker according to claim 1, it is characterized in that: described first magnetic pole is 45 ° to the direction of second magnetic pole with the angle of the horizontal direction of parallel magnetic bowl bottom.
5. loud speaker according to claim 1, it is characterized in that: the direction of described first magnetic pole and second magnetic pole is 30 ° with the angle of the horizontal direction of parallel magnetic bowl bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010224353 CN101977342B (en) | 2010-07-09 | 2010-07-09 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010224353 CN101977342B (en) | 2010-07-09 | 2010-07-09 | Loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101977342A CN101977342A (en) | 2011-02-16 |
| CN101977342B true CN101977342B (en) | 2013-09-18 |
Family
ID=43577181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010224353 Active CN101977342B (en) | 2010-07-09 | 2010-07-09 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101977342B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889959B (en) * | 2019-05-09 | 2019-07-26 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN111682731A (en) * | 2020-06-30 | 2020-09-18 | 歌尔股份有限公司 | Vibration device and electronic apparatus |
| CN212850206U (en) * | 2020-07-08 | 2021-03-30 | 瑞声科技(新加坡)有限公司 | Linear vibration motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040105568A1 (en) * | 2002-12-03 | 2004-06-03 | Po-Hsiung Lee | Speaker with enhanced magnetic flux |
| US20050163338A1 (en) * | 2004-01-06 | 2005-07-28 | Sony Corporation | Magnetic circuit and speaker |
| CN1700810A (en) * | 2004-05-18 | 2005-11-23 | 浙江新嘉联电子股份有限公司 | Double-magnet electroacoustical transducer |
| US7242787B2 (en) * | 2002-04-25 | 2007-07-10 | Pss Belgium, N.V. | Electromagnetic driving unit for a loudspeaker assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3841222B1 (en) * | 2005-01-28 | 2006-11-01 | 松下電器産業株式会社 | Electrodynamic electroacoustic transducer and electronic equipment |
-
2010
- 2010-07-09 CN CN 201010224353 patent/CN101977342B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7242787B2 (en) * | 2002-04-25 | 2007-07-10 | Pss Belgium, N.V. | Electromagnetic driving unit for a loudspeaker assembly |
| US20040105568A1 (en) * | 2002-12-03 | 2004-06-03 | Po-Hsiung Lee | Speaker with enhanced magnetic flux |
| US20050163338A1 (en) * | 2004-01-06 | 2005-07-28 | Sony Corporation | Magnetic circuit and speaker |
| CN1700810A (en) * | 2004-05-18 | 2005-11-23 | 浙江新嘉联电子股份有限公司 | Double-magnet electroacoustical transducer |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-104626A 2007.04.19 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101977342A (en) | 2011-02-16 |
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