CN103442318A - Magnetic circuit system of loudspeaker - Google Patents
Magnetic circuit system of loudspeaker Download PDFInfo
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- CN103442318A CN103442318A CN2013103146763A CN201310314676A CN103442318A CN 103442318 A CN103442318 A CN 103442318A CN 2013103146763 A CN2013103146763 A CN 2013103146763A CN 201310314676 A CN201310314676 A CN 201310314676A CN 103442318 A CN103442318 A CN 103442318A
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- 239000000463 material Substances 0.000 claims abstract description 15
- 230000001939 inductive effect Effects 0.000 claims description 44
- 230000035699 permeability Effects 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a magnetic circuit system of a loudspeaker. The magnetic circuit system of the loudspeaker comprises a magnetic conducting plate, and an inner magnet and/or an outer magnet. The inner magnet and/or the outer magnet and/is combined to the surface of the magnetic conducting plate. The magnetic conducting plate comprises a magnetic conducting plate body portion. A magnetic conducting block made of high-magnetic-conductance materials is arranged at the position, right opposite to the outer side and/or inner side corner portion, of the inner magnet and/or the outer magnet, of the magnetic conducting plate body portion. The magnetic conductance of the magnetic conducting block is higher than that of the magnetic conducting plate body portion, and the magnetic conducting block can cover the area of the outer side and/or inner side corner portion of the inner magnet and/or the outer magnet. According to the structure, the magnetic saturation phenomenon of the magnetic circuit system of the loudspeaker can be effectively improved, the acoustic performance of the loudspeaker is improved, and the achievement of the thin type of the loudspeaker is facilitated.
Description
Technical field
The present invention relates to the electroacoustic field, be specifically related to a kind of magnetic circuit of loudspeaker.
Background technology
The magnetic circuit of loudspeaker of the prior art comprises magnetic conductive board and is incorporated into internal magnet and/or the external magnet of magnetic conductive board one side, magnetic circuit system forms closed magnetic loop, the voice coil loudspeaker voice coil of loud speaker is connected forced vibration in the magnetic gap formed at magnetic circuit system after the signal of telecommunication, further drives vibrating diaphragm generation of vibration sound.Take the internal magnetic circuit system as example, position corresponding to bight, the internal magnet outside on magnetic conductive board easily produces magnetic saturation, and this is because this part magnetic conductive board can not hold the magnetic induction line that internal magnet produces fully, and the part magnetic induction line can not be utilized, thereby the waste magnetic property, be unfavorable for the raising of properties of product.
As a kind of improvement, magnetic conductive board can be thickeied, after magnetic conductive board thickening to a certain extent, magnetic induction line can be received in magnetic loop, can be utilized.But this structure has increased the thickness of loud speaker, be unfavorable for the slimming application of product.Therefore, be necessary the magnetic circuit of loudspeaker of this structure is improved, to avoid above-mentioned defect.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of magnetic circuit of loudspeaker, can improve the magnetic saturation phenomenon of magnetic circuit system, and additionally not increase the height of product, improve the acoustical behavior of product.
To achieve these goals, the invention provides a kind of magnetic circuit of loudspeaker, comprise magnetic conductive board, and the internal magnet and/or the external magnet that are incorporated into described magnetic conductive board surface, wherein, described magnetic conductive board comprises the magnetic conductive board body, be provided with the magnetic inductive block of high-permeability material on described magnetic conductive board body over against the position in described internal magnet and/or the external magnet outside and/or inboard bight, the magnetic permeability of described magnetic inductive block is higher than the magnetic permeability of described magnetic conductive board body, and described magnetic inductive block can cover the outside of described internal magnet and/or external magnet and/or the zone in inboard bight.
In addition, preferred scheme is, described magnetic inductive block is arranged on described magnetic conductive board the surface near described internal magnet and/or external magnet one side.
In addition, preferred scheme is, described magnetic inductive block is arranged on described magnetic conductive board the surface away from described internal magnet and/or external magnet one side.
In addition, preferred scheme is that described magnetic inductive block runs through described magnetic conductive board setting, and described magnetic inductive block covers the zone at internal magnet and/or external magnet place.
In addition, preferred scheme is, described magnetic circuit system comprises the internal magnet that is arranged at described magnetic conductive board center and the external magnet that is arranged at described magnetic conductive board edge, and described internal magnet and described external magnet are positioned at the same side of described magnetic conductive board, between described internal magnet and described external magnet, form magnetic gap; Described magnetic inductive block covers on described magnetic conductive board the zone corresponding to the inboard bight of bight, the outside, magnetic gap and the described external magnet of described internal magnet simultaneously.
In addition, preferred scheme is that described magnetic inductive block and described magnetic conductive board are by the mode secure bond of punching press.
In addition, preferred scheme is that described magnetic inductive block and described magnetic conductive board are by the mode secure bond of bonding.
In addition, preferred scheme is that described magnetic conductive board body is stainless steel material.
In addition, preferred scheme is that described magnetic conductive board body is stainless steel material.
After adopting technique scheme, with traditional structure, compare, the present invention is provided with the magnetic inductive block of high magnetic permeability corresponding to the position in the bight, the outside of internal magnet and/or external magnet and/or inboard bight at magnetic conductive board, the most easily produce the material that magnetically saturated part arranges high magnetic permeability on magnetic conductive board, thereby can effectively improve the magnetic saturation phenomenon of magnetic circuit system, the magnetic property of product is fully utilized, is conducive to improve the acoustical behavior of loud speaker; And this structure do not increase the thickness of magnetic conductive board yet, thereby also be conducive to the realization of product slimming.
The accompanying drawing explanation
By below in conjunction with accompanying drawing, present invention is described, above-mentioned feature of the present invention and technological merit will become apparent and easily understand.
Fig. 1 is the cross-sectional view of the embodiment of the present invention one magnetic circuit of loudspeaker;
Fig. 2 is the cross-sectional view of the embodiment of the present invention two magnetic circuits of loudspeaker;
Fig. 3 is the cross-sectional view of a kind of embodiment of the embodiment of the present invention three magnetic circuits of loudspeaker;
Fig. 4 is the vertical view of magnetic conductive board shown in Fig. 3;
Fig. 5 is the cross-sectional view of a kind of improvement project of the embodiment of the present invention three magnetic circuit of loudspeaker;
Fig. 6 is the cross-sectional view of the another kind of improvement project of the embodiment of the present invention three magnetic circuits of loudspeaker.
embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is done to further detailed description.
Embodiment mono-:
As shown in Figure 1, the magnetic circuit of loudspeaker comprises washer 1, the internal magnet 2 of combination successively and is incorporated into the magnetic conductive board of internal magnet 2 away from washer 1 one sides, and the position over against internal magnet 2 bights, the outside on the magnetic circuit system magnetic conductive board of this structure easily produces magnetic saturation.In the present embodiment, magnetic conductive board is comprised of magnetic inductive block 31 and magnetic conductive board body 32, and magnetic inductive block 31 is incorporated on magnetic conductive board the position corresponding to internal magnet 2 bights, the outside, and wherein magnetic inductive block 31 adopts high-permeability materials.The present embodiment magnetic conductive board body 32 is stainless steel material, and the magnetic permeability of magnetic inductive block 31 material therefors is several times of stainless steel material magnetic conductive board body 32, even tens times, but the cost of this high magnetic permeability magnetic inductive block 31 is also higher.Thisly at magnetic conductive board, easily produce the structure that magnetically saturated part arranges the magnetic inductive block 31 of high magnetic permeability, effectively improved the magnetic saturation phenomenon of magnetic conductive board, magnetic induction line can fully be beneficial to, improved the acoustical behavior of product; And this structure do not need to increase the thickness of magnetic conductive board, thereby be conducive to the slimming of product.
Preferably, magnetic inductive block 31 by the mode secure bond of pressing or bonding, is integrated magnetic inductive block 31 and magnetic conductive board body 32 secure bond with magnetic conductive board body 32.
In addition, magnetic inductive block 31 can be arranged on magnetic conductive board near or away from a side of internal magnet 2, also can run through whole magnetic conductive board, all can improve the magnetic saturation phenomenon and can not increase the thickness of magnetic conductive board, magnetic property that all can improving product, and be conducive to the slimming of product.
Embodiment bis-:
As shown in Figure 2, the present embodiment magnetic circuit system is the external magnetic circuit structure, comprise washer 1, external magnet 2 and the magnetic conductive board of combination successively, external magnet 2 is incorporated into the marginal position of magnetic conductive board, and the position corresponding to external magnet 2 inboard bights on the magnetic circuit system magnetic conductive board of this structure easily produces magnetic saturation.The present embodiment is provided with the magnetic inductive block 31 of high magnetic permeability on magnetic conductive board corresponding to the position in external magnet 2 inboard bights, a same embodiment, and magnetic inductive block 31 and magnetic conductive board body 32 are integrated by the mode secure bond of pressing or bonding.Magnetic inductive block 31 can be arranged on magnetic conductive board near or away from a side of internal magnet 2, also can run through whole magnetic conductive board.
The magnetic circuit system of this external magnetic circuit structure, magnetic inductive block 31 arranges the position in corresponding on magnetic conductive board and external magnet 2 inboard bights, can improve equally the magnetic saturation of magnetic conductive board, improves the acoustical behavior of product, and can not increase the thickness of magnetic conductive board, be conducive to realize the slimming of product.
Embodiment tri-:
As shown in Figure 3 and Figure 4, the magnetic circuit system of the present embodiment is two magnetic route structure, comprise magnetic conductive board 3, be positioned at the internal magnet 21 and the external magnet 22 that is positioned at the magnetic conductive board marginal position of magnetic conductive board 3 centers, interior washer 11 is incorporated into the uper side surface of internal magnet 21, and outer washer 12 is incorporated into the uper side surface of external magnet 22; Internal magnet 21 and external magnet 22 are positioned at the same side of magnetic conductive board 3, and above-mentioned magnetic circuit system forms closed magnetic loop.Be provided with the magnetic inductive block 31 of high magnetic permeability on magnetic conductive board 3 corresponding to the position in the bight, the outside of internal magnet 21 and external magnet 22 inboard bights.Be formed for accommodating the magnetic gap of loudspeaker voice coil between internal magnet 21 and external magnet 22, the spacing of magnetic gap is less, and the present embodiment magnetic inductive block 31 covers on magnetic conductive board 3 zone corresponding to the inboard bight of bight, the outside, magnetic gap and the external magnet 22 of internal magnet 21 simultaneously.The present embodiment magnetic gap is loop configuration, and corresponding magnetic inductive block 31 is also loop configuration, as shown in Figure 4.
In the present embodiment, magnetic inductive block 31 is arranged on magnetic conductive board 3 side near internal magnet 21 and external magnet 22, and magnetic inductive block 31 does not run through magnetic conductive board, and this structure can improve the magnetic saturation phenomenon, can save again the materials of magnetic inductive block 31, thereby can save cost.
Equally, the magnetic circuit system of this double magnetic circuit, and be provided with the magnetic inductive block 31 of high magnetic permeability corresponding to the position in internal magnet 21 bights, the outside and external magnet 22 inboard bights at magnetic conductive board 3, the most easily produce the material that magnetically saturated part arranges high magnetic permeability on magnetic conductive board 3, thereby can effectively improve the magnetic saturation phenomenon of magnetic circuit system, the magnetic property of product is fully utilized, is conducive to improve the acoustical behavior of loud speaker; And this structure do not increase the thickness of magnetic conductive board 3 yet, thereby also be conducive to the realization of product slimming.
Fig. 5 is the cross-sectional view of 31 kinds of improvement projects of the embodiment of the present invention, and as shown in the figure, the magnetic inductive block 31 of this programme is arranged on magnetic conductive board the side away from internal magnet 21 and external magnet 22.
Fig. 6 is the cross-sectional view of the embodiment of the present invention three another kind of improvement projects, as shown in the figure, the main distinction of this programme and above embodiment is: magnetic inductive block 31 runs through the magnetic conductive board setting, and can cover the zone in internal magnet 21 bights, the outside and external magnet 22 inboard bights.
Equally, above-mentioned two kinds of improved plans also can effectively be improved the magnetic saturation phenomenon, improve the acoustical behavior of product, and are conducive to the realization of product slimming.
In above three embodiment, magnetic conductive board body 32 can adopt the stainless steel material that price is lower, and magnetic inductive block 31 and magnetic conductive board body 32 all can be by the mode secure bond of pressing or bonding.
Under above-mentioned instruction of the present invention; those skilled in the art can carry out other improvement and distortion on the basis of above-described embodiment; and these improvement and distortion; all drop in protection scope of the present invention; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained purpose of the present invention, and protection scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. a magnetic circuit of loudspeaker, comprise magnetic conductive board, and the internal magnet and/or the external magnet that are incorporated into described magnetic conductive board surface, it is characterized in that,
Described magnetic conductive board comprises the magnetic conductive board body, be provided with the magnetic inductive block of high-permeability material on described magnetic conductive board body over against the position in described internal magnet and/or the external magnet outside and/or inboard bight, the magnetic permeability of described magnetic inductive block is higher than the magnetic permeability of described magnetic conductive board body, and described magnetic inductive block can cover the outside of described internal magnet and/or external magnet and/or the zone in inboard bight.
2. a kind of magnetic circuit of loudspeaker according to claim 1, is characterized in that, described magnetic inductive block is arranged on described magnetic conductive board the surface near described internal magnet and/or external magnet one side.
3. a kind of magnetic circuit of loudspeaker according to claim 1, is characterized in that, described magnetic inductive block is arranged on described magnetic conductive board the surface away from described internal magnet and/or external magnet one side.
4. a kind of magnetic circuit of loudspeaker according to claim 1, is characterized in that, described magnetic inductive block runs through described magnetic conductive board setting, and described magnetic inductive block covers the zone at internal magnet and/or external magnet place.
5. according to the described a kind of magnetic circuit of loudspeaker of the arbitrary claim of claim 1 to 4, it is characterized in that, described magnetic circuit system comprises the internal magnet that is arranged at described magnetic conductive board center and the external magnet that is arranged at described magnetic conductive board edge, described internal magnet and described external magnet are positioned at the same side of described magnetic conductive board, between described internal magnet and described external magnet, form magnetic gap; Described magnetic inductive block covers on described magnetic conductive board the zone corresponding to the inboard bight of bight, the outside, magnetic gap and the described external magnet of described internal magnet simultaneously.
6. a kind of magnetic circuit of loudspeaker according to claim 5, is characterized in that, described magnetic inductive block and described magnetic conductive board are by the mode secure bond of punching press.
7. a kind of magnetic circuit of loudspeaker according to claim 5, is characterized in that, described magnetic inductive block and described magnetic conductive board are by the mode secure bond of bonding.
8. a kind of magnetic circuit of loudspeaker according to claim 6, is characterized in that, described magnetic conductive board body is stainless steel material.
9. a kind of magnetic circuit of loudspeaker according to claim 7, is characterized in that, described magnetic conductive board body is stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103146763A CN103442318A (en) | 2013-07-24 | 2013-07-24 | Magnetic circuit system of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103146763A CN103442318A (en) | 2013-07-24 | 2013-07-24 | Magnetic circuit system of loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN103442318A true CN103442318A (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103146763A Pending CN103442318A (en) | 2013-07-24 | 2013-07-24 | Magnetic circuit system of loudspeaker |
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| CN (1) | CN103442318A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128439A1 (en) * | 2017-12-25 | 2019-07-04 | 歌尔股份有限公司 | Magnetic conductive plate carrier tape and sounding device module |
| WO2022062154A1 (en) * | 2020-09-28 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Vibration electric motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003163991A (en) * | 2001-11-26 | 2003-06-06 | Alpine Electronics Inc | Speaker |
| JP2004193835A (en) * | 2002-12-10 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Speaker |
| CN202841516U (en) * | 2012-10-23 | 2013-03-27 | 郑全录 | Integrated rare-earth loudspeaker with big voice coil |
| CN202907164U (en) * | 2012-08-14 | 2013-04-24 | 歌尔声学股份有限公司 | Electroacoustic transducer |
| CN203387668U (en) * | 2013-07-24 | 2014-01-08 | 歌尔声学股份有限公司 | Loudspeaker magnetic circuit system |
-
2013
- 2013-07-24 CN CN2013103146763A patent/CN103442318A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003163991A (en) * | 2001-11-26 | 2003-06-06 | Alpine Electronics Inc | Speaker |
| JP2004193835A (en) * | 2002-12-10 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Speaker |
| CN202907164U (en) * | 2012-08-14 | 2013-04-24 | 歌尔声学股份有限公司 | Electroacoustic transducer |
| CN202841516U (en) * | 2012-10-23 | 2013-03-27 | 郑全录 | Integrated rare-earth loudspeaker with big voice coil |
| CN203387668U (en) * | 2013-07-24 | 2014-01-08 | 歌尔声学股份有限公司 | Loudspeaker magnetic circuit system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128439A1 (en) * | 2017-12-25 | 2019-07-04 | 歌尔股份有限公司 | Magnetic conductive plate carrier tape and sounding device module |
| WO2022062154A1 (en) * | 2020-09-28 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Vibration electric motor |
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| CB02 | Change of applicant information |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: Goertek Inc. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131211 |
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| RJ01 | Rejection of invention patent application after publication |