CN201657287U - Double magnetic steel and double voice coil electromagnetic loudspeaker - Google Patents
Double magnetic steel and double voice coil electromagnetic loudspeaker Download PDFInfo
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- CN201657287U CN201657287U CN2010200563615U CN201020056361U CN201657287U CN 201657287 U CN201657287 U CN 201657287U CN 2010200563615 U CN2010200563615 U CN 2010200563615U CN 201020056361 U CN201020056361 U CN 201020056361U CN 201657287 U CN201657287 U CN 201657287U
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Abstract
The utility model provides a double magnetic steel and double voice coil electromagnetic loudspeaker, comprising a magnetic bowl, first magnetic steel, a first voice coil, second magnetic steel and a second voice coil. The magnetic bowl comprises a side wall, the first voice coil and the first magnetic steel are both fixed in the side wall, and the first voice coil surrounds the first magnetic steel. The second magnetic steel surrounds the first magnetic steel and the first voice coil, the second voice coil surrounds the second magnetic steel, and the side wall surrounds the second voice coil. The double magnetic steel and double voice coil electromagnetic loudspeaker has a rounding double magnetic steel and double voice coil structure, higher magnetic field use ratio and higher driving force, and can meet the requirements of lightening and thinning the product and the like.
Description
Technical field
The utility model relates to a kind of magnetic speaker, relates in particular to a kind of pair of magnet steel double-tone circle magnetic speaker.
Background technology
Be applied to the electro-acoustic transducing device on the portable consumer electronic products such as mobile communication equipment, palmtop PC, hand-held game machine, GPS navigation device, what generally use is the micro electromagnetic loud speaker.In order to satisfy the requirement of product slimming requirement and high tone quality, require the micro electromagnetic loud speaker to develop towards the slimming aspect as far as possible.
Seeing also Fig. 1, is a kind of side cross-sectional schematic of the magnetic speaker relevant with the utility model, and described magnetic speaker 1 comprises a pole piece 13, a magnet steel 14, a voice coil loudspeaker voice coil 15 and a magnetic bowl 16.Described magnet steel 14 is housed in the described magnetic bowl 16, and described pole piece 13 is arranged on the surface of described magnet steel 14 away from described magnetic bowl 16, and described voice coil loudspeaker voice coil 15 is around described magnet steel 14.
Yet the problem that described magnetic speaker 1 exists is: the magnetic field utilance of described magnet steel 14 is lower, causes the actuating force that forms less, and especially when the area of described magnet steel 14 greatly the time, the problem that the utilance of its center regional magnetic field is lower is more outstanding.A method that solves the low problem of magnetic field utilance is: can adopt more large-scale magnet steel 14 and voice coil loudspeaker voice coil 15 to improve the actuating force of magnetic speaker, but this measure can cause the volume of product obviously to increase again, can not satisfy the lightening demand of product.
The utility model content
Lower for the magnetic field utilance that solves magnetic speaker, can not satisfy the lightening problem of product, provide utilance two magnet steel double-tone circle magnetic speakers higher, that can satisfy the lightening requirement of product in a kind of magnetic field real for necessary.
A kind of technical scheme of technical solution problem is: a kind of pair of magnet steel double-tone circle magnetic speaker.Described pair of magnet steel double-tone circle magnetic speaker comprises magnetic bowl, first magnet steel, first voice coil loudspeaker voice coil, second magnet steel and second voice coil loudspeaker voice coil.Described magnetic bowl comprises sidewall, and described first voice coil loudspeaker voice coil and described first magnet steel all are fixed in the described sidewall, and described first voice coil loudspeaker voice coil is around described first magnet steel.Described second magnetic steel ring is around described first magnet steel and described first voice coil loudspeaker voice coil, and described second voice coil loudspeaker voice coil is around described second magnet steel, and described side wall ring is around described second voice coil loudspeaker voice coil.
As the further improvement of above-mentioned pair of magnet steel double-tone circle magnetic speaker, described magnetic bowl also comprises a diapire, and described sidewall is to be extended to form by described bottom wall edge, and perpendicular to described diapire setting.
Further improvement as above-mentioned pair of magnet steel double-tone circle magnetic speaker also comprises first pole piece, the folded surface of described first magnet steel that be located at of described first pole piece away from described magnetic bowl one side, and by described first voice coil loudspeaker voice coil around.
Further improvement as above-mentioned pair of magnet steel double-tone circle magnetic speaker also comprises second pole piece, and described second pole piece is folded to be located at the surface of described second magnet steel away from described magnetic bowl one side, and it is around described first voice coil loudspeaker voice coil.
As the further improvement of above-mentioned pair of magnet steel double-tone circle magnetic speaker, described second voice coil loudspeaker voice coil is around described second pole piece.
As the further improvement of above-mentioned pair of magnet steel circle magnetic speaker, described first magnet steel is " patty " structure.
As the further improvement of above-mentioned pair of magnet steel double-tone circle magnetic speaker, described first pole piece is " patty " structure.
As the further improvement of above-mentioned pair of magnet steel double-tone circle magnetic speaker, described second magnet steel is " annular " structure.
As the further improvement of above-mentioned pair of magnet steel double-tone circle magnetic speaker, described second pole piece is " annular " structure.
As the further improvement of above-mentioned pair of magnet steel double-tone circle magnetic speaker, the magnetizing direction of the magnetizing direction of described first magnet steel and described second magnet steel is opposite.
Described pair of magnet steel double-tone circle magnetic speaker of the present utility model adopts described second magnetic steel ring to cooperate around structure and with the double-tone coil structures of described first voice coil loudspeaker voice coil and the formation of described second voice coil loudspeaker voice coil around two magnetic steel ring of described first magnet steel, can effectively improve the magnetic field utilance, the magnetic field utilance when especially the magnetic field area is big.And do not increase the thickness of described pair of magnet steel double-tone circle magnetic speaker, in that to guarantee under the constant situation of systematic function magnetic circuit to be accomplished thinner, help described pair of magnet steel double-tone circle magnetic speaker to lightening development.
In sum, the of the present utility model pair of magnet steel double-tone circle magnetic speaker has that actuating force is higher, the magnetic field utilance is higher and helps advantages such as product is lightening.
Description of drawings
Fig. 1 is a kind of side cross-sectional schematic of the magnetic speaker relevant with the utility model.
Fig. 2 is the perspective exploded view of two magnet steel double-tone circle magnetic speaker one better embodiment of the utility model.
Fig. 3 is the side sectional view after the assembling of shown in Figure 2 pair of magnet steel double-tone circle magnetic speaker.
Embodiment
Below in conjunction with accompanying drawing of the present utility model pair of magnet steel double-tone circle magnetic speaker structure described.
Please consult Fig. 2 and Fig. 3 simultaneously, wherein, Fig. 2 is the perspective exploded view of two magnet steel double-tone circle magnetic speaker one better embodiment of the utility model, and Fig. 3 is the cutaway view after the assembling of shown in Figure 2 pair of magnet steel double-tone circle magnetic speaker.Described pair of magnet steel double-tone circle magnetic speaker 2 comprises loam cake 21, ball top 22, vibrating diaphragm 23, first voice coil loudspeaker voice coil 24, second voice coil loudspeaker voice coil 25, lower cover 26, first pole piece 27, first magnet steel 28, second pole piece 29, second magnet steel 30 and magnetic bowl 31.Described loam cake 21 and lower cover 26 constitute a receiving space (not indicating) to accommodate described ball top 22, vibrating diaphragm 3, first voice coil loudspeaker voice coil 24, second voice coil loudspeaker voice coil 25, first pole piece 27, first magnet steel 28, second pole piece 29, second magnet steel 30 and magnetic bowl 31.
Described first magnet steel 28 and described second magnet steel 30 are permanent magnets, and it is got by the higher metallic of multiple hardness usually, as iron, aluminium, nickel and cobalt etc., and perhaps copper, niobium and tantalum etc., according to the difference of composition, its magnetic property is also to should be differentiated.
Described first voice coil loudspeaker voice coil 24 and described second voice coil loudspeaker voice coil 25 are that it is normally formed by the copper conductor coiling by the multiturn voice coil loudspeaker voice coil structure of plain conductor coiling.
Described magnetic bowl 31 is roughly a disc structure, and it comprises a diapire 311 and a sidewall 312.Described sidewall 312 is formed towards described loam cake 21 direction vertical extent by diapire 311 edges of described magnetic bowl 31.Described magnetic bowl 31 is in order to accommodate described first pole piece 27, described first magnet steel 28, described second pole piece 29 and described second magnet steel 30.Described ball top 22 is stacked at a wherein surface of described vibrating diaphragm 23.Described vibrating diaphragm 23 is arranged on described first pole piece 27, described first magnet steel 28, described second pole piece 29 and described second magnet steel 30 tops.Described vibrating diaphragm 23 is made for the flexible material with better compliance, in order to vibration sounding.
Described first magnet steel 28 is roughly one " patty " structure, and surface thereof is close to the diapire 311 inner surface central areas of described magnetic bowl 31.Described first pole piece 27 and described first magnet steel, 28 structural similarities, it is stacked at another surface of described first magnet steel 28, that is and, described first magnet steel 28 is between described first pole piece 27 and described magnetic bowl 31 inboard diapires 311.
Described second magnet steel 30 is one " annular " structure, and its internal diameter is greater than the external diameter of described first magnet steel 28.Described second magnet steel 30 is looped around described first magnet steel 28, and described magnetic bowl 31 diapires of surface thereof butt 311 fringe regions, that is, the part of described butt is near the sidewall 312 of magnetic bowl 31.Described second pole piece 29 and described second magnet steel, 30 structural similarities, it is stacked at another surface of described second magnet steel 30, that is and, described second magnet steel 30 is sandwiched between diapire 311 inner surfaces of described second pole piece 29 and described magnetic bowl 31.
Because the radial dimension of described magnetic bowl 31 is greater than the outside dimension of described second magnet steel 30, the internal diameter size of described second magnet steel 30 is greater than the diameter of described first magnet steel 28.So interval one determining deviation constitutes one first magnetic gap (indicating) between the madial wall of described first magnet steel, 28 lateral walls and described second magnet steel 30; And interval one determining deviation constitutes one second magnetic gap (indicating) between the sidewall 312 of the lateral wall of described second magnet steel 30 and described magnetic bowl 31, as shown in Figure 3.Described first voice coil loudspeaker voice coil, 24 1 ends are bonded on the described vibrating diaphragm 23, its other end is suspended in described first magnetic gap and around described first pole piece 27 and described first magnet steel 28, thereby forms first magnetic circuit system (not indicating) of described pair of magnet steel double-tone circle magnetic speaker 2.Described second voice coil loudspeaker voice coil, 25 1 ends are bonded on the described vibrating diaphragm 23 equally, and its other end is suspended in described second magnetic gap and around described second pole piece 29 and described second magnet steel 30, and described second pole piece 29 is around described first pole piece 28 and described first voice coil loudspeaker voice coil 24.Thereby form second magnetic circuit system (not indicating) of described pair of magnet steel double-tone circle magnetic speaker 2.
Further, the magnetizing direction of the magnetizing direction of described first magnet steel 28 and described second magnet steel 30 is opposite.For example, described first magnet steel 28 is for upwards magnetizing, and described second magnet steel 30 then magnetizes downwards, and again for example, described first magnet steel 28 is for magnetizing downwards, and described second magnet steel 30 then upwards magnetizes.Above magnetizing direction is convenient the illustrating of present embodiment of describing, and not representing only has above-mentioned magnetizing direction, according to actual needs, also can be magnetizing of other direction.
Described pair of magnet steel double-tone circle magnetic speaker 2 of the present utility model adopts two magnet steel structures of described first magnet steel 28 and 30 formation of described second magnet steel and cooperates described first voice coil loudspeaker voice coil 24 and the double-tone coil structures of described second voice coil loudspeaker voice coil 25 formation, can effectively improve the magnetic field utilance, increase actuating force.Because the described pair of formed multipath magnetic circuit of magnet steel structure can effectively increase magnetic field intensity, improve the magnetic field utilance, and adopt around structural design, do not increase the thickness of described pair of magnet steel double-tone circle magnetic speaker 2, in that to guarantee under the constant situation of systematic function magnetic circuit to be accomplished thinner, help described pair of magnet steel double-tone circle magnetic speaker 2 to lightening development.
Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. two magnet steel double-tone circle magnetic speaker, it comprises magnetic bowl, first magnet steel and first voice coil loudspeaker voice coil, described magnetic bowl comprises sidewall, described first voice coil loudspeaker voice coil and described first magnet steel all are fixed in the described sidewall, described first voice coil loudspeaker voice coil is characterized in that around described first magnet steel: further comprise second magnet steel and second voice coil loudspeaker voice coil, described second magnetic steel ring is around described first magnet steel and described first voice coil loudspeaker voice coil, described second voice coil loudspeaker voice coil is around described second magnet steel, and described side wall ring is around described second voice coil loudspeaker voice coil.
2. according to claim 1 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: described magnetic bowl also comprises a diapire, described sidewall is to be extended to form by described bottom wall edge, and perpendicular to described diapire setting.
3. according to claim 2 pair of magnet steel double-tone circle magnetic speaker is characterized in that: further comprise first pole piece, the folded surface of described first magnet steel that be located at of described first pole piece away from described magnetic bowl one side, and by described first voice coil loudspeaker voice coil around.
4. according to claim 3 pair of magnet steel double-tone circle magnetic speaker is characterized in that: further comprise second pole piece, described second pole piece is folded to be located at the surface of described second magnet steel away from described magnetic bowl one side, and it is around described first voice coil loudspeaker voice coil.
5. according to claim 4 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: described second voice coil loudspeaker voice coil is around described second pole piece.
6. according to claim 3 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: described first magnet steel is " patty " structure.
7. according to claim 6 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: described first pole piece is " patty " structure.
8. according to claim 4 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: described second magnet steel is " annular " structure.
9. according to claim 8 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: described second pole piece is " annular " structure.
10. according to claim 1 pair of magnet steel double-tone circle magnetic speaker, it is characterized in that: the magnetizing direction of the magnetizing direction of described first magnet steel and described second magnet steel is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200563615U CN201657287U (en) | 2010-01-11 | 2010-01-11 | Double magnetic steel and double voice coil electromagnetic loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200563615U CN201657287U (en) | 2010-01-11 | 2010-01-11 | Double magnetic steel and double voice coil electromagnetic loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN201657287U true CN201657287U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200563615U Ceased CN201657287U (en) | 2010-01-11 | 2010-01-11 | Double magnetic steel and double voice coil electromagnetic loudspeaker |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281655A (en) * | 2013-04-16 | 2013-09-04 | 沙文金 | Double-voice coil moving-coil loudspeaker |
| CN103945311A (en) * | 2014-04-24 | 2014-07-23 | 中山市天键电声有限公司 | Novel double-moving-coil type loudspeaker |
| CN105554655A (en) * | 2016-02-25 | 2016-05-04 | 广东欧珀移动通信有限公司 | Loudspeaker |
| CN105578361A (en) * | 2016-03-01 | 2016-05-11 | 广东欧珀移动通信有限公司 | Magnetic circuit structure for loudspeaker, and loudspeaker |
| CN105657617A (en) * | 2016-03-01 | 2016-06-08 | 广东欧珀移动通信有限公司 | Magnetic circuit structure of loudspeaker and loudspeaker |
| CN106303857A (en) * | 2016-09-07 | 2017-01-04 | 深圳天珑无线科技有限公司 | Double diaphragm loudspeaking component and loudspeaker arrangement |
| CN106454649A (en) * | 2016-08-16 | 2017-02-22 | 深圳天珑无线科技有限公司 | Double-voice-coil loudspeaking assembly and loudspeaking apparatus |
-
2010
- 2010-01-11 CN CN2010200563615U patent/CN201657287U/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281655A (en) * | 2013-04-16 | 2013-09-04 | 沙文金 | Double-voice coil moving-coil loudspeaker |
| CN103945311A (en) * | 2014-04-24 | 2014-07-23 | 中山市天键电声有限公司 | Novel double-moving-coil type loudspeaker |
| CN105554655A (en) * | 2016-02-25 | 2016-05-04 | 广东欧珀移动通信有限公司 | Loudspeaker |
| CN105578361A (en) * | 2016-03-01 | 2016-05-11 | 广东欧珀移动通信有限公司 | Magnetic circuit structure for loudspeaker, and loudspeaker |
| CN105657617A (en) * | 2016-03-01 | 2016-06-08 | 广东欧珀移动通信有限公司 | Magnetic circuit structure of loudspeaker and loudspeaker |
| CN106454649A (en) * | 2016-08-16 | 2017-02-22 | 深圳天珑无线科技有限公司 | Double-voice-coil loudspeaking assembly and loudspeaking apparatus |
| CN106303857A (en) * | 2016-09-07 | 2017-01-04 | 深圳天珑无线科技有限公司 | Double diaphragm loudspeaking component and loudspeaker arrangement |
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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: 20121226 Decision number of declaring invalidation: 19753 Granted publication date: 20101124 |